changes.txt revision 1.1.1.34
1 ---------------------------------------- 2 12 December 2024. Summary of changes for version 20241212: 3 4 Major changes: 5 6 Fix 2 critical CVE addressing memory leaks - Seunghun Han 7 8 EINJ V2 updates ? Zaid Alali (Ampere Computing) 9 10 CDAT updates ? Ira Weiny (Intel Corporation) 11 12 Fix mutex handling, don?t release ones that were never acquired ? Daniil Tatianin 13 14 Experiment with new tag name format Ryyyy_mm_dd to solve chronological sorting problems 15 16 17 ---------------------------------------- 18 27 September 2024. Summary of changes for version 20240927: 19 20 Major changes: 21 22 Fix the acpixf.h file which caused issues for the last release (before this) 20240827 23 24 Fix the pointer offset for the SLIC table 25 26 Verify the local environment and GitHub commits are all in sync which was a problem with the second from last release (before this)20240322 (aka 20240323 date issue) 27 28 29 30 ---------------------------------------- 31 27 August 2024. Summary of changes for version 20240827: 32 33 Major changes: 34 35 Fix the PHAT table working: ensure that the PHAT firmware health record offset works correctly, fix various sub-table offsets, prevent segmentation faults when encountering invalid device paths. Contributed by: Armin Wolf <W_Armin (a] gmx.de> 36 37 Fix the optional table 4-byte signature. Contributed by: Daniil Tatianin <99danilt (a] gmail.com> 38 39 Correct the dumping of SLIC and DBG2 tables. Contributed by: Al Stone (Fedora) <ahs3 (a] ahs3.net> 40 41 Add support for QWordPCC and DWordPCC by Jose Marinho (ARM) 42 43 Fix the integer to hex string conversions by Armin Wolf 44 45 Detecting FACS in reduced HW mode and allowing setting waking vector thereby waking up from S3 state 46 47 Fixing issues with crossing page boundaries when mapping operation regions by Raju Rangoju, Sanath S and Mario Limonciello (AMD) 48 49 Update the support for IORT, HMAT, MPAM, AEST, CEDT, SPCR etc. tables 50 51 Fix multiple issues with table parsing, compilation and disassembly by Myra DeMere (Google) 52 53 Allow for more flexibility in _DSM usage. 54 55 56 ---------------------------------------- 57 22 March 2024. Summary of changes for version 20240322: 58 59 Major changes: 60 61 Update all the license header year from 2023 to 2024. 62 63 Fix table argument ordering to work properly with iasl. 64 65 Get rid of the annoying repeated warning types in MSVC and Windows. 66 67 Fix a test in ASLTS with edge case failure. 68 69 Fix a couple of issues with how GPEs are counted and enabled. 70 71 Add new tables for various architectures/OS, mainly RISC-V and also update many more. 72 73 Add an option to either make the output deterministic or non-deterministic. 74 75 Remove redundant checks, duplicated code and fix spellings in various files. 76 77 Fix flex arrays for C++ compilers and also make ACPICA overall more compatible with different compilers which throw warnings related to memory sanitization etc. 78 79 80 ---------------------------------------- 81 28 June 2023. Summary of changes for version 20230628: 82 83 0) Global changes: 84 85 Fixed a problem with the ASL/AML Timer() operator. Discovered by UBSAN: ?array-index-out-of-bounds in acpica/dswexec.c:401:12 index -1 is out of range for type 'acpi_operand_object?. Added AML_NO_OPERAND_RESOLVE flag to Timer (since there are no runtime arguments). Reported by: Abhishek Mainkar abmainkar (a] nvidia.com. 86 87 Added a define for size of acpi_srat_generic_affinity DeviceHandle. Replaced a magic number with a define. The Linux kernel code will utilize this. Reported by Dave Jiang dave.jiang (a] intel.com. 88 89 Added support for _DSC (Deepest State for Configuration) as per ACPI 6.5. 90 91 1) ACPICA kernel-resident subsystem: 92 93 Added port definitions for CDAT SSLBIS. Add upstream port and any port definitions for SSLBIS. Reported by: Dave Jiang dave.jiang (a] intel.com. 94 95 Fixed misspelled CDAT DSMAS define: ACPI_CEDT_DSMAS_NON_VOLATILE -> ACPI_CDAT_DSMAS_NON_VOLATILE. Reported by: Dave Jiang dave.jiang (a] intel.com. 96 97 1) ACPICA kernel-resident subsystem: 98 99 Fix GCC 12 dangling-pointer warning. We're storing a persistent pointer to an ephemeral local variable which technically is a dangling pointer and the compiler is correct. However, since we never indirect the pointer, this is a safe operation and we can suppress the warning. 100 101 Also, some C run-times (like MUSL) aren't including <stdint.h> indirectly so we must include it explicitly or we won't have the type definition for uintptr_t. 102 103 2) iASL Compiler/Disassembler and ACPICA tools:. 104 105 IASL/RHCT: Enable dumping and compiling newly added nodes. The RHCT table is updated with new nodes. Add compile and dump functionality for these new structures. 106 107 AcpiExec: Added a new command, ?interrupt?. The Interrupt command simulates an interrupt with a IntID (GSIV) equal to the first argument of the call/invocation. The acpiexec code simulates the behavior by OSPM: execute the _EVT method of the GED device associated with that IntID. Submitted by: Jose Marinho jose.marinho (a] arm.com. 108 109 AcpiExec: Detect GED device and keep track of _EVT. The GED device is described by a _HID of ACPI0013. This code traverses the namespace identifying all GED devices. For each GED device in the namespace we record the Interrupt object and the _EVT method. This information is used when an interrupt is simulated via the ?interrupt? command. Submitted by: Jose Marinho jose.marinho (a] arm.com. 110 ---------------------------------------- 111 31 March 2023. Summary of changes for version 20230331: 112 113 This release is available at https://acpica.org/downloads 114 115 0) Global changes: 116 117 118 Update all copyright notices to the year 2023. This effects all source 119 modules, as well as utility signons. 120 Add OS-specific support for Zephyr RTOS. 121 Fix miscellaneous code that accesses various objects. 122 Remove some dead code. 123 Add C ?Flexible Array? support. 124 Add support for 64 bit LoongArch compilation. 125 Add first batch of RISC-V related definitions. 126 Performed a global automated update to remove tabs, fix indentation 127 issues, etc. 128 129 1) ACPICA kernel-resident subsystem: 130 131 hwvalid: Drop port I/O validation. 132 133 2) ACPICA tools and utilities: 134 135 iASL: Added full macro support in the preprocessor. Example: 136 #define ABCD(a,b,c,d) a+b+c-d 137 138 Known macro support limitations (at this time): 139 No support for multi-line #define macros (backslash continuation 140 lines) 141 No support for the C-style ternary operator 142 No support for the stringizing operator (#) 143 No support for the concatenation (token pasting) operator (##) 144 No support for variable number of macro arguments 145 146 Add support for AMD Secure Processor Table (ASPT) version 1. 147 Add support for Arm's MPAM ACPI table version 2. 148 ACPI 6.5: MADT: add support for trace buffer extension in GICC. 149 Headers: Delete bogus NodeArray array of pointers from AEST table. 150 PHAT table support is still ongoing. 151 152 153 ---------------------------------------- 154 20 October 2022. Summary of changes for version 20221020: 155 156 This release is available at https://acpica.org/downloads 157 158 0) Global changes: 159 160 Allow disabling of -Werror. For distro maintainers having `-Werror` can 161 delay update of GCC. Since every GCC release might add new warnings that 162 were not yet captured, it might break the build of packages. With this 163 change, distros can now build with `NOWERROR=TRUE` instead of patching 164 either the errors or the makefiles. The default behavior keeps on using 165 `-Werror`. 166 167 1) ACPICA kernel-resident subsystem: 168 169 Added support for FFH Operation Region special context data. FFH(Fixed 170 Function Hardware) Opregion is approved to be added in ACPI 6.5 via code 171 first approach[1]. It requires special context data similar to GPIO and 172 Generic Serial Bus as it needs to know platform specific offset and 173 length. 174 175 Reverted this commit "executer/exsystem: Warn about sleeps greater than 176 10 ms." Due to user complaints about valid sleeps greater than 10ms seen 177 in some existing machines -- generating lots of warnings. 178 179 Do not touch VGA memory when EBDA < 1KiB. The ACPICA code assumes that 180 EBDA region must be at least 1KiB in size. Because this is not 181 guaranteed, it might happen that while scanning the memory for RSDP 182 pointer, the kernel touches memory above 640KiB. This is unwanted as the 183 VGA memory range may not be decoded or even present when running under 184 virtualization. 185 186 Check that EBDA pointer is in valid memory. If the memory at 0x40e is 187 uninitialized, the retrieved physical memory address of EBDA may be 188 beyond the low memory (i.e. above 640K). If so, the kernel may 189 unintentionally access the VGA memory, that might not be decoded or even 190 present in case of virtualization. 191 192 2) iASL Compiler/Disassembler and ACPICA tools: 193 194 Completed the existing partial support for the CDAT "table". Although 195 this isn't technically an ACPI table (It doesn't go into the XSDT), it is 196 possible to support this table in the Data Table compiler. Created one 197 new file, "utilities/utcksum.c", used to centralize checksum 198 generation/validation into one location. Includes changes to makefiles 199 and MSVC project files. 200 201 Updated support for the IORT table - update to version E.e 202 203 Added CXL 3.0 structures (CXIMS & RDPAS) to the CEDT table 204 205 iASL: Added CCEL table to both compiler/disassembler. 206 207 iASL: NHLT table: Fixed compilation of optional undocumented fields 208 209 iASL: Fix iASL compile error due to ACPI_TDEL_OFFSET. Commit # 10e4763 210 ("iASL: Add CCEL table to both compiler/disassembler") introduced the 211 iASL build issue. The issue is due to using ACPI_TDEL_OFFSET for CCEL 212 table member reference. To fix it, change ACPI_TDEL_OFFSET with 213 ACPI_CCEL_OFFSET. 214 215 ---------------------------------------- 216 31 March 2022. Summary of changes for version 20220331: 217 218 0) Global changes: 219 220 Update all copyright notices to the year 2022. This effects all source 221 modules, as well as utility signons. 222 223 224 1) ACPICA kernel-resident subsystem: 225 226 For the ASL Sleep() operator, issue a warning if the sleep value is 227 greater than 10 Milliseconds. Quick boottime is important, so warn about 228 sleeps greater than 10 ms. Distribution Linux kernels reach initrd in 350 229 ms, so excessive delays should be called out. 10 ms is chosen randomly, 230 but three of such delays would already make up ten percent of the 231 boottime. 232 233 Namespace: Avoid attempting to walk the Namespace if the Namespace does 234 not exist. 235 236 AML interpreter/iASL compiler: Add new Acpi 6.4 semantics for the 237 LoadTable and Load operators. DDB_HANDLE is gone, now loadtable returns a 238 pass/fail integer. Now load returns a pass/fail integer, as well as 239 storing the return value in an optional 2nd argument. 240 241 Headers: Use uintptr_t and offsetof() in Linux kernel builds. To avoid 242 "performing pointer subtraction with a null pointer has undefined 243 behavior" compiler warnings, use uintptr_t and offsetof() that are always 244 available during Linux kernel builds to define ACPI_UINTPTR_T and the 245 ACPI_TO_INTEGER() and ACPI_OFFSET() macros when building the ACPICA code 246 in the Linux kernel. 247 248 Added support for the Windows 11 _OSI string ("Windows 2021"). Submitted 249 by superm1. 250 251 executer/exsystem: Inform users about ACPI spec violation for the Stall() 252 operator. Values greater than 100 microseconds violate the ACPI 253 specification, so warn users about it. From the ACPI Specification 254 version 6.2 Errata A, 19.6.128 *Stall (Stall for a Short Time)*: 255 > The implementation of Stall is OS-specific, but must not relinquish 256 > control of the processor. Because of this, delays longer than 100 257 > microseconds must use Sleep instead of Stall. 258 259 260 2) iASL Compiler/Disassembler and ACPICA tools: 261 262 Data Table Compiler/Disassembler: Add support for the APMT table - ARM 263 Performance Monitoring Unit table. Submitted by @bwicaksononv. 264 265 Data Table Compiler/Disassembler: For MADT, add support for the OEM- 266 defined subtables (Types 0x80-0x7F). 267 268 Data Table Compiler: Fixed a problem with support for the SDEV table, 269 where a subtable Length was not computed correctly. 270 271 Data Table Compiler/Disassembler: Add/fix the CFMWS subtable to the CEDT 272 Acpi table support. 273 274 Data Table Compiler/Disassembler: Fix a compile issue with the CEDT and 275 add template. Submitted by MasterDrogo. 276 277 Data Table Compiler/Disassembler: NHLT Changes provided by Piotr Maziarz: 278 iASL/NHLT: Rename linux specific structures to DeviceInfo to improve 279 readability of the code. 280 iASL/NHLT: Fix parsing undocumented bytes at the end of Endpoint. 281 Undocumented bytes at the end of Endpoint Descriptor can be present 282 independently of Linux-specific structures. Their size can also vary. 283 iASL/NHLT: Treat TableTerminator as SpecificConfig. SpecificConfig has 4 284 bytes of size and then an amount of bytes specified by size. All of the 285 terminators that I've seen had a size equal to 4, but theoretically it 286 can vary. 287 288 iASL/AcpiExec: Use _exit instead of exit in signal handers (ctrl-C). 289 290 iASL: Remove a remark due to excessive output. Removed a remark for 291 duplicate Offset() operators, due to a user complaint. 292 293 ---------------------------------------- 294 17 December 2021. Summary of changes for version 20211217: 295 296 1) ACPICA kernel-resident subsystem: 297 298 Hardware: Do not flush CPU cache when entering S4 and S5. According to 299 ACPI 6.4, Section 16.2, the CPU cache flushing is required on entering to 300 S1, S2, and S3, but the ACPICA code flushes the CPU cache regardless of 301 the sleep state. Blind cache flush on entering S5 causes problems for 302 TDX. 303 304 Avoid subobject buffer overflow when validating RSDP signature. Since the 305 Signature member is accessed through an ACPI_TABLE_HEADER, the pointer to 306 it is only to a 4-char array, and so trying to read past the 4th 307 character, as will be done when it is an RSDP, reads beyond the bounds of 308 the accessed member. Contributed by jrtc27. 309 310 Add support for PCC Opregion special context data. PCC Opregion added in 311 ACPIC 6.3 requires special context data similar to GPIO and Generic 312 Serial Bus as it needs to know the internal PCC buffer and its length as 313 well as the PCC channel index when the opregion handler is being executed 314 by the OSPM. Adds support for the special context data needed by PCC 315 Opregion. Submitted by Sudeep Holla <sudeep.holla (a] arm.com> 316 317 2) iASL Compiler/Disassembler and ACPICA tools: 318 319 iASL: Completed compiler support for the NHLT ACPI table. 320 321 iASL/NHLT table: Fixed a reported problem where a fault would occur 322 during disassembly of a "Linux-Specific" section if the "Specific Data" 323 part was not present. 324 325 iASL: Added full support (compiler and disassembler) for the AGDI ACPI 326 table. Contributed by: Ilkka Koskinen <ilkka (a] os.amperecomputing.com>. 327 328 iASL: Added full support for the TDEL ACPI table. 329 330 iASL table compiler: FADT support updates: 331 1) Allow the 32-bit DSDT address to be zero. 332 2) Issue error if both the 32-bit and 64-bit DSDT addresses are zero. 333 334 iASL: Fix unaligned accesses to local cache allocations. Contributed by 335 jrtc27. 336 337 iASL: Open binary input files in binary mode, not text mode Affects 338 binary input AML files, as well as binary data table files, for 339 disassembly. 340 341 ---------------------------------------- 342 30 September 2021. Summary of changes for version 20210930: 343 344 This release is available at https://acpica.org/downloads 345 346 1) ACPICA kernel-resident subsystem: 347 348 Hardware: Avoid evaluating methods too early during system resume. During 349 wakeup from system-wide sleep states, AcpiGetSleepTypeData() is called 350 and it tries to get memory from the OS in order to evaluate a control 351 method, but if KFENCE is enabled in the Linux kernel, the memory 352 allocation attempt causes an IRQ work to be queued and a self-IPI to be 353 sent to the CPU running the code which requires the memory controller to 354 be ready, so if that happens too early in the wakeup path, it doesn't 355 work. 356 357 Prevent that from taking place by calling AcpiGetSleepTypeData() for S0 358 upfront, when preparing to enter a given sleep state, and saving the data 359 obtained by it for later use during system wakeup. 360 361 Added a new _OSI string, "Windows 2020". Posted by superm1. 362 363 2) iASL Compiler/Disassembler and ACPICA tools: 364 365 iASL compiler: Updated the check for usage of _CRS, _DIS, _PRS, and _SRS 366 objects: 367 New/latest rules: Under a Device Object: 368 1) If _PRS is present, must have _CRS and _SRS 369 2) If _SRS is present, must have _PRS (_PRS requires _CRS and 370 _SRS) 371 3) If _DIS is present, must have _SRS (_SRS requires _PRS, _PRS 372 requires _CRS and _SRS) 373 4) If _SRS is present, probably should have a _DIS (Remark only) 374 375 iASL table disassembler: Added disassembly support for the NHLT ACPI 376 table. Note: support for Vendor-defined microphone arrays and SNR 377 extensions are not supported at this time -- mostly due to a lack of 378 example tables. Actual compiler support for NHLT is forthcoming. 379 380 Added a new subtable type for ACPI 6.4 SRAT Generic Port Affinity. It 381 uses the same subtable structure as the existing Generic Initiator 382 Affinity type. 383 384 Added the flag for online capable in the MADT, introduced in ACPI 6.3. 385 Posted by superm1. 386 387 3) ACPICA documentation: Updated the legal info (that appears at the 388 start of the Documents) to clarify distribution rights that are granted. 389 390 391 ---------------------------------------- 392 30 July 2021. Summary of changes for version 20210730: 393 394 This release is available at https://acpica.org/downloads 395 396 1) ACPICA kernel-resident subsystem: 397 398 2) iASL Compiler/Disassembler and ACPICA tools: 399 400 iasl: Check usage of _CRS, _DIS, _PRS, and _SRS objects (July 2021). 401 Under the Device Object: 402 1) If _DIS is present, must have a _CRS and _SRS 403 2) If _PRS is present, must have a _CRS, _DIS, and _SRS 404 3) If _SRS is present, must have a _CRS and _DIS 405 A warning will be issued for each of these cases. 406 Note: For existing ASL/projects, these warnings may be disabled by 407 specifying this on the command line: 408 "-vw 3141" 409 410 iASL Table Disassembler/Table compiler: Fix for WPBT table with no 411 command-line arguments. Handle the case where the Command-line 412 Arguments table field does not exist (zero). 413 414 Headers: Add new DBG2 Serial Port Subtypes 415 The Microsoft Debug Port Table 2 (DBG2) specification revision 416 September 21, 2020 comprises additional Serial Port Subtypes [1]. 417 Reflect that in the actbl1.h header file. Submitted by: 418 semihalf-wojtas-marcin 419 420 iASL: Add full support for the AEST table (data compiler) 421 Includes support in the table compiler and the disassembler. 422 423 Add PRMT module header to facilitate parsing. 424 This structure is used in to parse PRMT in other Operating Systems 425 that relies on using subtable headers in order to parse ACPI tables. 426 Although the PRMT doesn't have "subtables" it has a list of module 427 information structures that act as subtables. 428 429 iASL: Table disassembler: Add missing strings to decode subtable types. 430 Includes the MADT and CEDT tables. 431 432 433 ---------------------------------------- 434 04 June 2021. Summary of changes for version 20210604: 435 436 1) ACPICA kernel-resident subsystem: 437 438 Cleaned up (delete) the context mutex during local address handler object 439 deletion. 440 441 Fixed a memory leak caused by the _CID repair function. 442 443 Added support for PlatformRtMechanism OperationRegion handler. Adds a new 444 utility function, AcpiUtConvertUuidToString. Writing a buffer to a 445 PlatformRtMechanism fieldunit invokes a bidirectional transaction. The 446 input buffer contains 26 bytes containing 9 bytes of status, a command 447 byte and a 16-byte UUID. This change will simply pass this incoming 448 buffer to a handler registered by the OS. 449 450 2) iASL Compiler/Disassembler and ACPICA tools: 451 452 Added full support for the PRMT ACPI table (Platform Runtime Mechanism 453 Table). Includes support in the iASL compiler, the disassembler, and the 454 template generator. 455 456 Added full support for the BDAT (BIOS Data ACPI Table) ACPI table. 457 458 Added full support for the RGRT (Regulatory Graphics Resource Table) ACPI 459 table. 460 461 Added full support for the SVKL (Storage Volume Key Location Table) ACPI 462 table. Header file support from Kuppuswamy Sathyanarayanan 463 <sathyanarayanan.kuppuswamy (a] linux.intel.com>. 464 465 Completed full support for the IVRS (I/O Virtualization Reporting 466 Structure) ACPI table. Added compiler support for IVRS, updated 467 disassembler support. Adds a new utility, UtIsIdInteger, to determine if 468 a HID/CID is an integer or a string. 469 470 Headers: Added more structs to the CEDT table: CXL fixed memory window 471 structure. 472 473 ACPI 6.4: MADT: added Multiprocessor Wakeup Mailbox Structure. 474 475 ---------------------------------------- 476 31 March 2021. Summary of changes for version 20210331: 477 478 This release is available at https://acpica.org/downloads, and includes 479 all ACPI 6.4 support 480 481 1) ACPICA kernel-resident subsystem: 482 ACPI 6.4: iASL: deprecate DDBHandleObj keyword 483 Always create namespace nodes using AcpiNsCreateNode(). ACPICA is 484 allocating an object using kmalloc(), but then frees it 485 using kmem_cache_free(<"Acpi-Namespace" kmem_cache>). This is wrong. 486 Fixed a race condition in generic serial bus operation region handler. 487 Fixed by Hans de Goede. 488 489 2) iASL Compiler/Disassembler and ACPICA tools: 490 491 ACPI 6.4: NFIT: add Location Cookie field 492 ACPI 6.4: HMAT: add new fields/flags 493 ACPI 6.4: Add new flags in SRAT 494 ACPI 6.4: add SDEV secure access components 495 ACPI 6.4: add Csi2Bus resource template 496 ACPI 6.4: add support for PHAT table 497 ACPI 6.4: add support for PMTT table 498 Add disassembly support for the IVRS table. Compilation of the table is 499 not yet complete. 500 Fixed a potential infinite loop due to type mismatch. The for-loop is 501 using a UINT8 counter and comparing the upper 502 limit against a UINT32 AslGbl_ExpectedMessagesIndex maximum. In 503 the case where AslGbl_ExpectedMessagesIndex is > 255 the counter i 504 will wrap around to zero and the loop will never exit. I suspect 505 the AslGbl_ExpectedMessagesIndex is never that high, but fixing 506 this does future proof the code and cleans up static analysis 507 warnings.Colin King. 508 iASL/TableCompiler: update it with IORT table E.b revision changes. From 509 shamiali2008. 510 iASL/TableCompiler: Add compilation support for the VIOT table. Signed- 511 off-by: Jean-Philippe Brucker. 512 iASL/TableCompiler: Add compilation support for CEDT table. Also, update 513 the CEDT template. 514 515 ---------------------------------------- 516 05 January 2021. Summary of changes for version 20210105: 517 518 This release is available at https://acpica.org/downloads 519 520 521 1) ACPICA kernel-resident subsystem: 522 523 Updated all copyrights to 2021. This affects all ACPICA source code 524 modules. 525 526 2) iASL Compiler/Disassembler and ACPICA tools: 527 528 ASL test suite (ASLTS): Updated all copyrights to 2021. 529 530 Tools and utilities: Updated all signon copyrights to 2021. 531 532 iASL Table Compiler: Removed support for obsolete ACPI tables: VRTC, 533 MTMR. Al Stone. 534 535 536 ---------------------------------------- 537 17 December 2020. Summary of changes for version 20201217: 538 539 This release is available at https://acpica.org/downloads 540 541 542 1) ACPICA kernel-resident subsystem: 543 544 Note: The implementation of ACPI 6.4 is underway, and is expected to be 545 mostly finished next month, when ACPI 6.4 is released. 546 547 From qzed:- fixed-ae-class-macros. Fix exception code class checks. Added 548 several new macros, such as ACPI_CNTL_EXCEPTION(Status) in order to 549 enable this. 550 551 AcpiExec/iASL/AcpiHelp: Added a few changes for support of GCC 10.2.0. 552 These included a few casts, as well as a null pointer check. 553 554 Fix -Wfallthrough: GCC 7.1 gained -Wimplicit-fallthrough to warn on 555 implicit fallthrough, as well as __attribute__((__fallthrough__)) and 556 comments to explicitly denote that cases of fallthrough were intentional. 557 Clang also supports this warning and statement attribute, but not the 558 comment form. Added a new macro, ACPI_FALLTHROUGH to support this feature 559 of GCC. With assistance from @nickdesaulniers. 560 561 2) iASL Compiler/Disassembler and ACPICA tools: 562 563 Added improvement to method call analysis by saving the return type and 564 relaxing certain cases of type checking. 565 566 iASL Table Compiler: Improved info messages. Added a message to the -T 567 option for when the default template (DSDT) is used. 568 Also added a note for when multiple SSDTs are created with a DSDT that 569 the SSDTs are created in the same file as the DSDT. 570 571 572 ---------------------------------------- 573 574 13 November 2020. Summary of changes for version 20201113: 575 576 This release is available at https://acpica.org/downloads 577 578 579 1) ACPICA kernel-resident subsystem: 580 581 Interpreter: fixed a memory leak by using use existing buffer in _HID 582 repair. There was a memory leak that occurred when a _CID object is 583 defined as a package containing string objects. When _CID is checked for 584 any possible repairs, it calls a helper function to repair _HID (because 585 _CID basically contains multiple _HID entries). The _HID repair function 586 assumes that string objects are standalone objects that are not contained 587 inside of any packages. The _HID repair function replaced the string 588 object with a brand new object and attempted to delete the old object by 589 decrementing the reference count of the old object. Strings inside of 590 packages have a reference count of 2 so the _HID repair function leaves 591 this object in a dangling state and causes a memory leak. Instead of 592 allocating a brand new object and removing the old object, use the 593 existing object when repairing the _HID object. 594 595 Added function trace macros to improve namespace debugging. The namespace 596 repair mechanism does not have function tracing macros. Add several trace 597 macros to improve debuggability. 598 599 Handle "orphan" _REG methods for GPIO OpRegions. Before this change 600 AcpiEvExecuteRegMethods() had special handling to handle "orphan" (no 601 matching OpRegion declared) _REG methods for EC nodes. On Intel Cherry 602 Trail devices there are 2 possible ACPI OpRegions for accessing GPIOs. 603 The standard GeneralPurposeIo OpRegion and the Cherry Trail - specific 604 UserDefined 0x9X OpRegions. Having 2 different types of OpRegions leads 605 to potential issues with checks for OpRegion availability, or in other 606 words checks if _REG has been called for the OpRegion which the ACPI code 607 wants to use. Except for the "orphan" EC handling, ACPICA core does not 608 call _REG on an ACPI node which does not define an OpRegion matching the 609 type being registered; and the reference design DSDT, from which most 610 Cherry Trail DSDTs are derived, does not define GeneralPurposeIo, nor 611 UserDefined(0x93) OpRegions for the GPO2 (UID 3) device, because no pins 612 were assigned ACPI controlled functions in the reference design. Together 613 this leads to the perfect storm, at least on the Cherry Trail based 614 Medion Akayo E1239T. This design does use a GPO2 pin from its ACPI code 615 and has added the Cherry Trail specific UserDefined(0x93) opregion to its 616 GPO2 ACPI node to access this pin. But it uses a "has _REG been called" 617 availability check for the standard GeneralPurposeIo OpRegion. This 618 clearly is a bug in the DSDT, but this does work under Windows. This 619 issue leads to the intel vbtn driver reporting the device always being in 620 tablet-mode at boot, even if it is in laptop mode. Which in turn causes 621 userspace to ignore touchpad events. So in other words, this issue causes 622 the touchpad to not work at boot. This change fixes this by extending the 623 "orphan" _REG method handling to also apply to GPIO address-space 624 handlers. 625 626 627 2) iASL Compiler/Disassembler and ACPICA tools: 628 629 iASL: Added more info to namespace dump file (-ln option). In a separate 630 section of the dump file (after the main namespace dump), emit the full 631 pathname for each namespace node, its type, and the ASL filename and line 632 number where it is declared. 633 634 AcpiHelp: Added an option to display/decode iASL exceptions. Option is: - 635 x [Hex Value] where "Hex Value" is the iASL exception code. If Hex Value 636 is omitted, all iASL exceptions are displayed. 637 638 iASL: Use StringLiteral instead of StringData for some ASL macros. The 639 use of the stringData rule allows for some "string" oriented opcodes 640 (Such as ToString, ToHexString, etc.) None of which make sense with the 641 macros in question. This change modifies the StringData part of the rule 642 for these macros to a simple string literal - thus disallowing the use 643 of ToString, ToHexString, etc. 644 The following ASL operators (macros) are affected: 645 EisaId 646 Fprintf 647 Printf 648 ToUuid 649 Unicode 650 Note: The MS compiler requires the use of string literals for these 651 operators also. 652 653 iASL: Added a remark for an unknown UUID: ASL_MSG_UUID_NOT_FOUND. Search 654 the list of "known" UUIDs for the input to the ToUUID macro. 655 656 Added 5 new UUIDs to the known UUID table. All related to NVDIMM and the 657 NFIT table. 658 659 660 ---------------------------------------- 661 662 25 September 2020. Summary of changes for version 20200925: 663 664 This release is available at https://acpica.org/downloads 665 666 667 1) ACPICA kernel-resident subsystem: 668 669 Preserve memory opregion mappings. The ACPICA's strategy with respect to 670 the handling of memory mappings associated with memory operation regions 671 is to avoid mapping the entire region at once which may be problematic at 672 least in principle (for example, it may lead to conflicts with 673 overlapping mappings having different attributes created by drivers). It 674 may also be wasteful, because memory opregions on some systems take up 675 vastchunks of address space while the fields in those regions actually 676 accessed by AML are sparsely distributed. 677 678 For this reason, a one-page "window" is mapped for a given opregion on 679 the first memory access through it and if that "window" does not cover an 680 address range accessed through that opregion subsequently, it is unmapped 681 and a new "window" is mapped to replace it. Next, if the new "window" is 682 not sufficient to access memory through the opregion in question in the 683 future, it will be replaced with yet another "window" and so on. That 684 may lead to a suboptimal sequence of memory mapping and unmapping 685 operations, for example if two fields in one opregion separated from each 686 other by a sufficiently wide chunk of unused address space are accessed 687 in an alternating pattern. 688 689 Added support for 64 bit risc-v compilation. Useful for acpica tools and 690 incorporating ACPICA into the Firmware Test Suite. Colin Ian King 691 <colin.king (a] canonical.com>. 692 693 Added support for SMBus predefined names (from SMBus Control Method 694 Interface Specification, Version 1.0, December 10, 1999. New predefined 695 names: 696 _SBA 697 _SBI 698 _SBR 699 _SBT 700 _SBW 701 702 AML Disassembler: Added a new command, "All <NameSeg>". This command will 703 evaluate all objects in the current namespace whose NameString contains 704 the input NameSeg as the last element of the NameString. Useful for 705 debugging. 706 707 708 2) iASL Compiler/Disassembler and ACPICA tools: 709 710 iASL: fixed a crash that occurred when predefined objects return packages 711 with lengths that exceed the initializer list. 712 713 iASL: added more detail to external resolution error message when 714 compiling multiple definition blocks. 715 716 iASL: added a remark for an attempt to create a nameseg or namestring 717 containing lower-case letters. This should prevent declaring multiple 718 namesegs or namestrings in an attempt to refer to different objects (with 719 different cases), but actually refer to the same object(s). 720 721 iASL: improve alias analysis by saving object type. If the alias is a 722 method type, the parameter count is also recorded. 723 724 AcpiExec: Increase the default loop timeout value. Was 1 second, is now 725 10 seconds. Prevents unnecessary timeouts when executing control methods 726 from the command line. 727 728 AcpiHelp/disassembler: Added a bunch of "known" UUIDs to the internal 729 list. Includes: 730 Memory Device 731 Generic Buttons Device 732 NVDIMM Root Device 733 Control Method Battery 734 Device Graphs for _DSD method 735 Hierarchical Data Extension 736 ....ARM CoreSight Graph 737 738 ---------------------------------------- 739 740 741 17 July 2020. Summary of changes for version 20200717: 742 743 This release is available at https://acpica.org/downloads 744 745 746 1) ACPICA kernel-resident subsystem: 747 748 Do not increment OperationRegion reference counts for field units. Recent 749 server firmware has revealed that this reference count can overflow on 750 large servers that declare many field units (thousands) under the same 751 OperationRegion. This occurs because each field unit declaration will add 752 a reference count to the source OperationRegion. This release solves the 753 reference count overflow for OperationRegion objects by preventing 754 fieldUnits from incrementing their parent OperationRegion's reference 755 count. 756 757 Replaced one-element arrays with flexible-arrays, which were introduced 758 in C99. 759 760 Restored the readme file containing the directions for generation of 761 ACPICA from source on MSVC 2017. Updated the file for MSVC 2017. File is 762 located at: generate/msvc2017/readme.txt 763 764 2) iASL Compiler/Disassembler and ACPICA tools: 765 766 iASL: Fixed a regression found in version 20200214. Prevent iASL from 767 emitting an extra byte of garbage data when control methods declared a 768 single parameter type without using braces. This extra byte is known to 769 cause a blue screen on the Windows AML interpreter. 770 771 iASL: Made a change to allow external declarations to specify the type of 772 a named object even when some name segments are not defined. 773 This change allows the following ASL code to compile (When DEV0 is not 774 defined or not defined yet): 775 776 External (\_SB.DEV0.OBJ1, IntObj) 777 External (\_SB.DEV0, DeviceObj) 778 779 iASL: Fixed a problem where method names in "Alias ()" statement could be 780 misinterpreted. They are now interpreted correctly as method invocations. 781 782 iASL: capture a method parameter count (Within the Method info segment, 783 as well as the argument node) when using parameter type lists. 784 785 ---------------------------------------- 786 787 788 28 May 2020. Summary of changes for version 20200528: 789 790 791 1) ACPICA kernel-resident subsystem: 792 793 Removed old/obsolete Visual Studio files which were used to build the 794 Windows versions of the ACPICA tools. Since we have moved to Visual 795 Studio 2017, we are no longer supporting Visual Studio 2006 and 2009 796 project files. The new subdirectory and solution file are located at: 797 798 acpica/generate/msvc2017/AcpiComponents.sln 799 800 801 2) iASL Compiler/Disassembler and ACPICA tools: 802 803 iASL: added support for a new OperationRegion Address Space (subtype): 804 PlatformRtMechanism. Support for this new keyword is being released for 805 early prototyping. It will appear in the next release of the ACPI 806 specification. 807 808 iASL: do not optimize the NameString parameter of the CondRefOf operator. 809 In the previous iASL compiler release, the NameString parameter of the 810 CondRefOf was optimized. There is evidence that some implementations of 811 the AML interpreter do not perform the recursive search-to-parent search 812 during the execution of the CondRefOf operator. Therefore, the CondRefOf 813 operator behaves differently when the NameString parameter is a single 814 name segment (a NameSeg) as opposed to a full NamePath (starting at the 815 root scope) or a NameString containing parent prefixes. 816 817 iASL: Prevent an inadvertent remark message. This change prevents a 818 remark if within a control method the following exist: 819 1) An Operation Region is defined, and 820 2) A Field operator is defined that refers to the region. 821 This happens because at the top level, the Field operator does not 822 actually create a new named object, it simply references the operation 823 region. 824 825 Removed support for the acpinames utility. The acpinames was a simple 826 utility used to populate and display the ACPI namespace without executing 827 any AML code. However, ACPICA now supports executable opcodes outside of 828 control methods. This means that executable AML opcodes such as If and 829 Store opcodes need to be executed during table load. Therefore, acpinames 830 would need to be updated to match the same behavior as the acpiexec 831 utility and since acpiexec can already dump the entire namespace (via the 832 'namespace' command), we no longer have the need to maintain acpinames. 833 834 In order to dump the contents of the ACPI namespace using acpiexec, 835 execute the following command from the command line: 836 837 acpiexec -b "n" [aml files] 838 839 ---------------------------------------- 840 841 842 30 April 2020. Summary of changes for version 20200430: 843 844 1) ACPICA kernel-resident subsystem: 845 846 Cleaned up the coding style of a couple of global variables 847 (AcpiGbl_NextCmdNum and AcpiProtocolLengths) caught by static analyzers. 848 AcpiProtocolLengths was made static, and the definition of 849 AcpiGbl_NextCmdNum was moved to acglobal.h. 850 851 852 2) iASL Compiler/Disassembler and ACPICA tools: 853 854 iASL DataTable Compiler: Fixed a segfault on errors that aren't directly 855 associated with a field. 856 857 Disassembler: has been made more resilient so that it will continue to 858 parse AML even if the AML generates ACPI namespace errors. This enables 859 iASL to disassemble some AML that may have been compiled using older 860 versions of iASL that no longer compile with newer versions of iASL. 861 862 iASL: Fixed the required parameters for _NIH and _NIG. Previously, there 863 was a mixup where _NIG required one parameter and _NIH required zero 864 parameters. This change swaps these parameter requirements. Now it is 865 required that _NIH must be called with one parameter and _NIG requires 866 zero parameters. 867 868 iASL: Allow use of undefined externals as long as they are protected by 869 an if (CondRefOf (...)) block when compiling multiple definition blocks. 870 871 iASL: Fixed the type override behavior of named objects that are declared 872 as External. External declarations will no longer override the type of 873 the actual definition if it already exists. 874 875 AcpiNames: Added setargv.obj to the MSVC 2017 link sequence to enable 876 command line wildcard support on Windows. Note: the AcpiNames utility is 877 essentially redundant with the AcpiExec utility (using the "namespace" 878 command) and is therefore deprecated. It will be removed in future 879 releases of ACPICA. 880 881 Disassembler: ignore AE_ALREADY_EXISTS status when parsing create* 882 operators. The disassembler is intended to emit existing ASL code as-is. 883 Therefore, error messages emitted during disassembly should be ignored or 884 handled in a way such that the disassembler can continue to parse the 885 AML. This change ignores AE_ALREADY_EXISTS errors during the deferred Op 886 parsing for create operators in order to complete parsing ASL termlists. 887 888 iASL DataTable Compiler: IVRS table: fix potentially uninitialized 889 variable warning. Some compilers catch potential uninitialized variables. 890 This is done by examining branches of if/else statements. This change 891 replaces an "else if" with an "else" to fix the uninitialized variable 892 warning. 893 894 895 ---------------------------------------- 896 26 March 2020. Summary of changes for version 20200326: 897 898 899 1) ACPICA kernel-resident subsystem: 900 901 Performed a code clean-up to prevent build errors on early versions of 902 GCC-10. 903 904 Added the NHLT table signature. iASL data table compiler/disassembler 905 support for this table is coming soon. 906 907 908 2) iASL Compiler/Disassembler and ACPICA tools: 909 910 AcpiExec: Fixed several problems with the namespace initialization file 911 (-fi<filename> option). Includes fixes to prevent AE_ALREADY_EXISTS 912 errors, several seg faults, and enhancements to line parsing within the 913 init file. In addition, each object found in the init file and it's new 914 value is displayed, as well as any such entries that do not have a 915 corresponding name in the namespace. For reference, the syntax for the 916 various supported data types are presented below: 917 PCHG 0x777788889999BBBB // Integer 918 \DEV1.STR1 "XYZ" // String 919 BUF1 (88 99 AA) // Buffer 920 PKG1 [0x1111 0x2222] // Package 921 \BF1 0x7980 // BufferField 922 RCRV 0x0123456789ABCDEF // Field Unit 923 924 iASL: Added a custom iASL macro __EXPECT__(iASL-Error-Code). This macro 925 can be used anywhere in a given ASL file to configure iASL to expect an 926 iASL compiler error code on the line where this macro was placed. If the 927 error code does not exist, an error is generated. This is intended to be 928 used for ACPICA's ASL test suite, but can be used by ASL developers as 929 well. 930 931 iASL: table compiler: Implemented IVRS IVHD type 11h parsing. The AMD 932 IVRS table parsing supported only IVHD type 10h structures. Parsing an 933 IVHD type 11h caused the iasl to report unknown subtable type. Add 934 necessary structure definition for IVHD type 11h and apply correct 935 parsing method based on subtable type. Micha? ?ygowski. 936 937 iASL: table compiler: Fixed IVRS table IVHD type 10h reserved field name 938 According to AMD IOMMU Specification Revision 3.05 the reserved field 939 should be IOMMU Feature Reporting. Change the name of the field to the 940 correct one. Micha? ?ygowski. 941 942 acpiexec: removed redeclaration of AcpiGbl_DbOpt_NoRegionSupport. Patch 943 based on suggestions by David Seifert and Benjamin Berg. 944 945 iASL: table compiler: removed an unused variable (DtCompilerParserResult) 946 causing linking errors. Patch based on suggestions by David Seifert and 947 Benjamin Berg. 948 949 iASL: table compiler: make LexBuffer static to avoid linking errors in 950 newer compilers. Patch based on suggestions by David Seifert and Benjamin 951 Berg. 952 953 iASL: fixed type matching between External and Named objects. External 954 object types can only be expressed with ACPI object type values that are 955 defined in the ACPI spec. However, iASL uses ACPI object type values that 956 are local to ACPICA in addition to the values defined in the ACPI spec. 957 This change implements type matching to map some object type values 958 specific to ACPICA to ones that are defined in the ACPI spec. 959 960 iASL: Dropped the type mismatch compiler error that can arise from 961 External declarations to a warning. This warning can occur when there is 962 a type difference between the external declaration and the actual object 963 declaration (when compiling multiple files/modules simultaneously). 964 965 iASL: removed an incorrect error message regarding externals. This change 966 removes an incorrect error that is emitted when a duplicate external 967 declaration does not contain a type that opens a scope. This is incorrect 968 because the duplicate external with conflicting types are already caught 969 by iASL and it doesn't make any sense to enforce what this conflicting 970 type should be. 971 972 AcpiXtract: fix AX_IS_TABLE_BLOCK_HEADER macro. This macro needs to be 973 surrounded by parens. Otherwise, a logical statement that applies a 974 logical not operator to this macro could result in a computation that 975 applies the operator to the left side of the logical and but not the 976 right. Reported-by: John Levon <john.levon (a] joyent.com> 977 978 Fixed a problem with the local version of sprint(): On 32-bit, the 979 provided sprintf() is non-functional: with a size of ACPI_UINT32_MAX, 980 String + Size will wrap, meaning End < Start, and 981 AcpiUtBoundStringOutput() will never output anything as a result. The 982 symptom seen of this was acpixtract failing to output anything -- with a 983 custom build that included utprint.c. Signed-off-by: John Levon 984 <john.levon (a] joyent.com> 985 986 iASL: Changed the "PlatformCommChannel" ASL keyword to "PCC", as per the 987 ACPI specification. 988 989 990 ---------------------------------------- 991 14 February 2020. Summary of changes for version 20200214: 992 993 994 1) ACPICA kernel-resident subsystem: 995 996 Enable sleep button on ACPI legacy wake: Hibernation (S4) is triggered 997 in a guest when it receives a sleep trigger from the hypervisor. When the 998 guest resumes from this power state, it does not see the SleepEnabled 999 bit. In other words, the sleepHibernation (S4) is triggered in a guest 1000 when it receives a sleep trigger from the hypervisor. When the guest 1001 resumes from this power state, it does not see the SleepEnabled bit. In 1002 other words, the sleep button is not enabled on waking from an S4 state. 1003 This causes subsequent invocation of sleep state to fail since the 1004 guest.button is not enabled on waking from an S4 state. This causes 1005 subsequent invocation of sleep state to fail in the guest. Fix this 1006 problem by enabling the sleep button in ACPI legacy wake. From Anchal 1007 Agarwal <anchalag (a] amazon.com>. 1008 1009 Implemented a new external interface, AcpiAnyGpeStatusSet (). To be used 1010 for checking the status bits of all enabled GPEs in one go. It is needed 1011 to distinguish spurious SCIs from genuine ones when deciding whether or 1012 not to wake up the system from suspend-to-idle. 1013 1014 Generic Makefiles: replace HOST name with ACPI_HOST: Some machines may be 1015 using HOST in their environment to represent the host name for their 1016 machines. Avoid this problem by renaming this variable from HOST to 1017 ACPI_HOST. 1018 1019 MSVC 2017 project files: Enable multiprocessor generation to improve 1020 build performance. 1021 1022 Added a macro to get the byte width of a Generic Address structure. New 1023 ACPI_ACCESS_BYTE_WIDTH is in addition to the existing 1024 ACPI_ACCESS_BIT_WIDTH. From Mika Westerberg. 1025 1026 1027 2) iASL Compiler/Disassembler and ACPICA tools: 1028 1029 iASL: Implemented full support for the (optional, rarely used) ReturnType 1030 and ParameterTypesList for the Method, Function, and External operators. 1031 For Method declarations, the number of individual ParameterTypes must 1032 match the declaration of the number of arguments (NumArgs). This also 1033 Fixes a problem with the External operator where extra/extraneous bytes 1034 were emitted in the AML code if the optional ReturnType/ParameterTypes 1035 were specified for a MethodObj declaration. 1036 New error message: 1037 1) Method NumArgs count does not match length of ParameterTypes list 1038 1039 iASL: Implemented detection of type mismatches between External 1040 declarations and named object declarations. Also, detect type mismatches 1041 between multiple External declarations of the same Name. 1042 New error messages: 1043 1) Type mismatch between external declaration and actual object 1044 declaration detected 1045 2) Type mismatch between multiple external declarations detected 1046 1047 iASL: Implemented new error messages for External operators that specify 1048 a ReturnType and/or ParameterTypesList for any object type other than 1049 control methods (MethodObj). 1050 New error messages: 1051 1) Return type is only allowed for Externals declared as MethodObj 1052 2) Parameter type is only allowed for Externals declared as MethodObj 1053 1054 iASL: Implemented two new remark/warning messages for ASL code that 1055 creates named objects from within a control method. This is very 1056 inefficient since the named object must be created and deleted each time 1057 the method is executed. 1058 New messages: 1059 1) Creation of named objects within a method is highly inefficient, use 1060 globals or method local variables instead (remark) 1061 2) Static OperationRegion should be declared outside control method 1062 (warning) 1063 1064 iASL: Improved illegal forward reference detection by adding support to 1065 detect forward-reference method invocations. 1066 1067 iASL: Detect and issue an error message for NameStrings that contain too 1068 many individual NameSegs (>255). This is an AML limitation that is 1069 defined in the ACPI specification. 1070 New message: 1071 1) NameString contains too many NameSegs (>255) 1072 1073 acpidump: windows: use GetSystemFirmwareTable API for all tables except 1074 SSDT. By using this API, acpidump is able to get all tables in the XSDT 1075 1076 iASL: Removed unused parser file and updated msvc2017 project files. 1077 Removed the obsolete AslCompiler.y from the repository. 1078 1079 iASL: msvc2017: Fixed macros in the file dependency list to prevent 1080 unnecessary rebuilds. Replace %(Directory) with %(RelativeDir). 1081 1082 Disassembler: Prevent spilling error messages to the output file. All 1083 errors are directed to the console instead. These error messages 1084 prevented re-compilation of the resulting disassembled ASL output file 1085 (.DSL). 1086 1087 1088 ---------------------------------------- 1089 10 January 2020. Summary of changes for version 20200110: 1090 1091 1092 1) ACPICA kernel-resident subsystem: 1093 1094 Updated all copyrights to 2020. This affects all ACPICA source code 1095 modules. 1096 1097 1098 2) iASL Compiler/Disassembler and ACPICA tools: 1099 1100 ASL test suite (ASLTS): Updated all copyrights to 2020. 1101 1102 Tools and utilities: Updated all signon copyrights to 2020. 1103 1104 iASL: fix forward reference analysis for field declarations. Fixes 1105 forward reference analysis for field declarations by searching the 1106 parent scope for the named object when the object is not present in 1107 the current scope. 1108 1109 iASL: Improved the error output for ALREADY_EXISTS errors. Now, the 1110 full pathname of the name that already exists is printed. 1111 1112 iASL: Enhance duplicate Case() detection for buffers. Add check for 1113 buffers with no initializer list (these buffers will be filled with 1114 zeros at runtime.) 1115 1116 1117 ---------------------------------------- 1118 13 December 2019. Summary of changes for version 20191213: 1119 1120 1121 1) ACPICA kernel-resident subsystem: 1122 1123 Return a Buffer object for all fields created via the CreateField 1124 operator. Previously, an Integer would be returned if the size of 1125 the field was less than or equal to the current size of an Integer. 1126 Although this goes against the ACPI specification, it provides 1127 compatibility with other ACPI implementations. Also updated the 1128 ASLTS test suite to reflect this new behavior. 1129 1130 2) iASL Compiler/Disassembler and ACPICA tools: 1131 1132 iASL: Implemented detection of (and throw an error for) duplicate 1133 values for Case statements within a single Switch statement. Duplicate 1134 Integers, Strings, and Buffers are supported. 1135 1136 iASL: Fix error logging issue during multiple file compilation -- 1137 Switch to the correct input file during error node creation. 1138 1139 iASL: For duplicate named object creation, now emit an error instead 1140 of a warning - since this will cause a runtime error. 1141 1142 AcpiSrc: Add unix line-ending support for non-Windows builds. 1143 1144 iASL: Add an error condition for an attempt to create a NameString 1145 with > 255 NameSegs (the max allowable via the AML definition). 1146 1147 1148 ---------------------------------------- 1149 18 October 2019. Summary of changes for version 20191018: 1150 1151 1152 1) ACPICA kernel-resident subsystem: 1153 1154 Debugger: added a new command: ?Fields [address space ID]?. This command 1155 dumps the contents of all field units that are defined within the 1156 namespace with a particular address space ID. 1157 1158 Modified the external interface AcpiLoadTable() to return a table index. 1159 This table index can be used for unloading a table for debugging. 1160 ACPI_STATUS 1161 AcpiLoadTable ( 1162 ACPI_TABLE_HEADER *Table, 1163 UINT32 *TableIndex)) 1164 1165 Implemented a new external interface: AcpiUnloadTable() This new function 1166 takes a table index as an argument and unloads the table. Useful for 1167 debugging only. 1168 ACPI_STATUS 1169 AcpiUnloadTable ( 1170 UINT32 TableIndex)) 1171 1172 Ported the AcpiNames utility to use the new table initialization 1173 sequence. The utility was broken before this change. Also, it was 1174 required to include most of the AML interpreter into the utility in order 1175 to process table initialization (module-level code execution.) 1176 1177 Update for results from running Clang V8.0.1. This fixes all "dead 1178 assignment" warnings. There are still several "Dereference of NULL 1179 pointer" warnings, but these have been found to be false positive 1180 warnings. 1181 1182 1183 2) iASL Compiler/Disassembler and ACPICA tools: 1184 1185 iASL: numerous table compiler changes to ensure that the usage of 1186 yacc/bison syntax is POSIX-compliant. 1187 1188 iASL/disassembler: several simple bug fixes in the data table 1189 disassembler. 1190 1191 Acpiexec: expanded the initialization file (the -fi option) to initialize 1192 strings, buffers, packages, and field units. 1193 1194 1195 ---------------------------------------- 1196 16 August 2019. Summary of changes for version 20190816: 1197 1198 This release is available at https://acpica.org/downloads 1199 1200 1201 1) ACPICA kernel-resident subsystem: 1202 1203 Modified the OwnerId mechanism to allow for more Owner Ids. The previous 1204 limit was 256 Ids, now it is 4096 Ids. This prevents OWNER_ID_LIMIT 1205 exceptions on machines with a large number of initialization threads, 1206 many CPU cores and nested initialization control methods. 1207 1208 Introduced acpi_dispatch_gpe() as a wrapper around AcpiEvDetectGpe() for 1209 checking if the given GPE (as represented by a GPE device handle and a 1210 GPE number) is currently active and dispatching it (if that's the case) 1211 outside of interrupt context. 1212 1213 Table load: exit the interpreter before initializing objects within the 1214 new table This prevents re-acquiring the interpreter lock when loading 1215 tables 1216 1217 Added the "Windows 2019" string to the _OSI support (version 1903). Jung- 1218 uk Kim 1219 1220 Macros: removed pointer math on a null pointer. Causes warnings on some 1221 compilers and/or tools. Changed ACPI_TO_POINTER to use ACPI_CAST_PTR 1222 instead of using arithmetic. 1223 1224 Fully deployed the ACPI_PRINTF_LIKE macro. This macro was not being used 1225 across all "printf-like" internal functions. Also, cleanup all calls to 1226 such functions (both in 32-bit mode and 64-bit mode) now that they are 1227 analyzed by the gcc compiler via ACPI_PRINTF_LIKE. 1228 1229 1230 2) iASL Compiler/Disassembler and ACPICA tools: 1231 1232 iASL: implemented a new data table compiler flex/bison front-end. This 1233 change is internal and is not intended to result in changes to the 1234 compiled code. This new compiler front-end can be invoked using the -tp 1235 option for now, until the old mechanism is removed. 1236 1237 ASLTS: Implemented a new data table compiler test suite. This test suite 1238 generates all table templates and compile/disassemble/re-compile/binary- 1239 compare each file. 1240 1241 iASL: return -1 if AML files were not generated due to compiler errors 1242 1243 iASL: added a warning on use of the now-legacy ASL Processor () keyword. 1244 1245 iASL: added an error on _UID object declaration that returns a String 1246 within a Processor () declaration. A _UID for a processor must be an 1247 Integer. 1248 1249 iASL: added a null terminator to name strings that consist only of 1250 multiple parent prefixes (^) 1251 1252 iASL: added support to compile both ASL and data table files in a single 1253 command. 1254 1255 Updated the tool generation project files that were recently migrated to 1256 MSVC 2017 to eliminate all new warnings. The new project files appear in 1257 the directory \acpica\generate\msvc2017. This change effectively 1258 deprecates the older project files in \acpica\generate\msvc9. 1259 1260 1261 ---------------------------------------- 1262 03 July 2019. Summary of changes for version 20190703: 1263 1264 1265 1) ACPICA kernel-resident subsystem: 1266 1267 Remove legacy module-level support code. There were still some remnants 1268 of the legacy module-level code executions. Since we no longer support 1269 this option, this is essentially dead code and has been removed from the 1270 ACPICA source. 1271 1272 iASL: ensure that _WAK, _PTS, _TTS, and _Sx are declared only at the root 1273 scope. If these named objects are declared outside the root scope, they 1274 will not be invoked by any host Operating System. 1275 1276 Clear status of GPEs on first direct enable. ACPI GPEs (other than the EC 1277 one) can be enabled in two situations. First, the GPEs with existing _Lxx 1278 and _Exx methods are enabled implicitly by ACPICA during system 1279 initialization. Second, the GPEs without these methods (like GPEs listed 1280 by _PRW objects for wakeup devices) need to be enabled directly by the 1281 code that is going to use them (e.g. ACPI power management or device 1282 drivers). 1283 1284 In the former case, if the status of a given GPE is set to start with, 1285 its handler method (either _Lxx or _Exx) needs to be invoked to take care 1286 of the events (possibly) signaled before the GPE was enabled. In the 1287 latter case, however, the first caller of AcpiEnableGpe() for a given GPE 1288 should not be expected to care about any events that might be signaled 1289 through it earlier. In that case, it is better to clear the status of 1290 the GPE before enabling it, to prevent stale events from triggering 1291 unwanted actions (like spurious system resume, for example). 1292 1293 For this reason, modify AcpiEvAddGpeReference() to take an additional 1294 boolean argument indicating whether or not the GPE status needs to be 1295 cleared when its reference counter changes from zero to one and make 1296 AcpiEnableGpe() pass TRUE to it through that new argument. 1297 1298 1299 2) iASL Compiler/Disassembler and ACPICA tools: 1300 1301 The tool generation process has been migrated to MSVC 2017, and all 1302 project files have been upgraded. The new project files appear in the 1303 directory \acpica\generate\msvc2017. This change effectively deprecates 1304 the older project files in \acpica\generate\msvc9. 1305 1306 iASL: ensure that _WAK, _PTS, _TTS, and _Sx are declared only at the root 1307 scope. If these named objects are declared outside the root scope, they 1308 will not be invoked by any host Operating System 1309 1310 ---------------------------------------- 1311 09 May 2019. Summary of changes for version 20190509: 1312 1313 1314 1) ACPICA kernel-resident subsystem: 1315 1316 Revert commit 6c43e1a ("ACPICA: Clear status of GPEs before enabling 1317 them") that causes problems with Thunderbolt controllers to occur if a 1318 dock device is connected at init time (the xhci_hcd and thunderbolt 1319 modules crash which prevents peripherals connected through them from 1320 working). Commit 6c43e1a effectively causes commit ecc1165b8b74 ("ACPICA: 1321 Dispatch active GPEs at init time") to get undone, so the problem 1322 addressed by commit ecc1165b8b74 appears again as a result of it. 1323 1324 1325 2) iASL Compiler/Disassembler and ACPICA tools: 1326 1327 Reverted iASL: Additional forward reference detection. This change 1328 reverts forward reference detection for field declarations. The feature 1329 unintentionally emitted AML bytecode with incorrect package lengths for 1330 some ASL code related to Fields and OperationRegions. This malformed AML 1331 can cause systems to crash 1332 during boot. The malformed AML bytecode is emitted in iASL version 1333 20190329 and 20190405. 1334 1335 iASL: improve forward reference detection. This change improves forward 1336 reference detection for named objects inside of scopes. If a parse object 1337 has the OP_NOT_FOUND_DURING_LOAD set, it means that Op is a reference to 1338 a named object that is declared later in the AML bytecode. This is 1339 allowed if the reference is inside of a method and the declaration is 1340 outside of a method like so: 1341 1342 DefinitionBlock(...) 1343 { 1344 Method (TEST) 1345 { 1346 Return (NUM0) 1347 } 1348 Name (NUM0,0) 1349 } 1350 1351 However, if the declaration and reference are both in the same method or 1352 outside any methods, this is a forward reference and should be marked as 1353 an error because it would result in runtime errors. 1354 1355 DefinitionBlock(...) 1356 { 1357 Name (BUFF, Buffer (NUM0) {}) // Forward reference 1358 Name (NUM0, 0x0) 1359 1360 Method (TEST) 1361 { 1362 Local0 = NUM1 1363 Name (NUM1, 0x1) // Forward reference 1364 return (Local0) 1365 } 1366 } 1367 1368 iASL: Implemented additional buffer overflow analysis for BufferField 1369 declarations. Check if a buffer index argument to a create buffer field 1370 operation is beyond the end of the target buffer. 1371 1372 This affects these AML operators: 1373 1374 AML_CREATE_FIELD_OP 1375 AML_CREATE_BIT_FIELD_OP 1376 AML_CREATE_BYTE_FIELD_OP 1377 AML_CREATE_WORD_FIELD_OP 1378 AML_CREATE_DWORD_FIELD_OP 1379 AML_CREATE_QWORD_FIELD_OP 1380 1381 There are three conditions that must be satisfied in order to allow this 1382 validation at compile time: 1383 1384 1) The length of the target buffer must be an integer constant 1385 2) The index specified in the create* must be an integer constant 1386 3) For CreateField, the bit length argument must be non-zero. 1387 1388 Example: 1389 Name (BUF1, Buffer() {1,2}) 1390 CreateField (BUF1, 7, 9, CF03) // 3: ERR 1391 1392 dsdt.asl 14: CreateField (BUF1, 7, 9, CF03) // 3: ERR 1393 Error 6165 - ^ Buffer index beyond end of 1394 target buffer 1395 1396 1397 ---------------------------------------- 1398 05 April 2019. Summary of changes for version 20190405: 1399 1400 1401 1) ACPICA kernel-resident subsystem: 1402 1403 Event Manager: History: Commit 18996f2db918 ("ACPICA: Events: Stop 1404 unconditionally clearing ACPI IRQs during suspend/resume") was added 1405 earlier to stop clearing of event status bits unconditionally on suspend 1406 and resume paths. Though this change fixed an issue on suspend path, it 1407 introduced regressions on several resume paths. In the case of S0ix, 1408 events are enabled as part of device suspend path. If status bits for the 1409 events are set when they are enabled, it could result in premature wake 1410 from S0ix. If status is cleared for any event that is being enabled so 1411 that any stale events are cleared out. In case of S0ix, events are 1412 enabled as part of device suspend path. If status bits for the events are 1413 set when they are enabled, it could result in premature wake from S0ix. 1414 1415 This change ensures that status is cleared for any event that is being 1416 enabled so that any stale events are cleared out. 1417 1418 1419 2) iASL Compiler/Disassembler and ACPICA tools: 1420 1421 iASL: Implemented an enhanced multiple file compilation that combines 1422 named objects from all input files to a single namespace. With this 1423 feature, any unresolved external declarations as well as duplicate named 1424 object declarations can be detected during compilation rather than 1425 generating errors much later at runtime. The following commands are 1426 examples that utilize this feature: 1427 iasl dsdt.asl ssdt.asl 1428 iasl dsdt.asl ssdt1.asl ssdt2.asl 1429 iasl dsdt.asl ssdt*.asl 1430 1431 ---------------------------------------- 1432 29 March 2019. Summary of changes for version 20190329: 1433 1434 1435 1) ACPICA kernel-resident subsystem: 1436 1437 Namespace support: Remove the address nodes from global list after method 1438 termination. The global address list contains pointers to namespace nodes 1439 that represent Operation Regions. This change properly removes Operation 1440 Region namespace nodes that are declared dynamically during method 1441 execution. 1442 1443 Linux: Use a different debug default than ACPICA. There was a divergence 1444 between Linux and the ACPICA codebases. In order to resolve this 1445 divergence, Linux now declares its own debug default in aclinux.h 1446 1447 Renamed some internal macros to improve code understanding and 1448 maintenance. The macros below all operate on single 4-character ACPI 1449 NameSegs, not generic strings (old -> new): 1450 ACPI_NAME_SIZE -> ACPI_NAMESEG_SIZE 1451 ACPI_COMPARE_NAME -> ACPI_COMPARE_NAMESEG 1452 ACPI_MOVE_NAME -> ACPI_COPY_NAMESEG 1453 1454 Fix for missing comma in array declaration for the AcpiGbl_GenericNotify 1455 table. 1456 1457 Test suite: Update makefiles, add PCC operation region support 1458 1459 1460 2) iASL Compiler/Disassembler and Tools: 1461 1462 iASL: Implemented additional illegal forward reference detection. Now 1463 detect and emit an error upon detection of a forward reference from a 1464 Field to an Operation Region. This will fail at runtime if allowed to 1465 pass the compiler. 1466 1467 AcpiExec: Add an address list check for dynamic Operation Regions. This 1468 feature performs a sanity test for each node the global address list. 1469 This is done in order to ensure that all dynamic operation regions are 1470 properly removed from the global address list and no dangling pointers 1471 are left behind. 1472 1473 Disassembler: Improved generation of resource pathnames. This change 1474 improves the code that generates resource descriptor and resource tag 1475 pathnames. The original code used a bunch of str* C library functions 1476 that caused warnings on some compilers. 1477 1478 iASL: Removed some uses of strncpy and replaced with memmove. The strncpy 1479 function can overwrite buffers if the calling code is not very careful. 1480 In the case of generating a module/table header, use of memmove is a 1481 better implementation. 1482 1483 1484 3) Status of new features that have not been completed at this time: 1485 1486 iASL: Implementing an enhanced multiple file compilation into a single 1487 namespace feature (Status): This feature will be released soon, and 1488 allows multiple ASL files to be compiled into the same single namespace. 1489 By doing so, any unresolved external declarations as well as duplicate 1490 named object declarations can be detected during compilation (rather than 1491 later during runtime). The following commands are examples that utilize 1492 this feature: 1493 iasl dsdt.asl ssdt.asl 1494 iasl dsdt.asl ssdt1.asl ssdt2.asl 1495 iasl dsdt.asl ssdt*.asl 1496 1497 ASL tutorial status: Feedback is being gathered internally and the 1498 current plan is to publish this tutorial on the ACPICA website after a 1499 final review by a tech writer. 1500 1501 ---------------------------------------- 1502 15 February 2019. Summary of changes for version 20190215: 1503 1504 1505 0) Support for ACPI specification version 6.3: 1506 1507 Add PCC operation region support for the AML interpreter. This adds PCC 1508 operation region support in the AML interpreter and a default handler for 1509 acpiexec. The change also renames the PCC region address space keyword to 1510 PlatformCommChannel. 1511 1512 Support for new predefined methods _NBS, _NCH, _NIC, _NIH, and _NIG. 1513 These methods provide OSPM with health information and device boot 1514 status. 1515 1516 PDTT: Add TriggerOrder to the PCC Identifier structure. The field value 1517 defines if the trigger needs to be invoked by OSPM before or at the end 1518 of kernel crash dump processing/handling operation. 1519 1520 SRAT: Add Generic Affinity Structure subtable. This subtable in the SRAT 1521 is used for describing devices such as heterogeneous processors, 1522 accelerators, GPUs, and IO devices with integrated compute or DMA 1523 engines. 1524 1525 MADT: Add support for statistical profiling in GICC. Statistical 1526 profiling extension (SPE) is an architecture-specific feature for ARM. 1527 1528 MADT: Add online capable flag. If this bit is set, system hardware 1529 supports enabling this processor during OS runtime. 1530 1531 New Error Disconnect Recover Notification value. There are a number of 1532 scenarios where system Firmware in collaboration with hardware may 1533 disconnect one or more devices from the rest of the system for purposes 1534 of error containment. Firmware can use this new notification value to 1535 alert OSPM of such a removal. 1536 1537 PPTT: New additional fields in Processor Structure Flags. These flags 1538 provide more information about processor topology. 1539 1540 NFIT/Disassembler: Change a field name from "Address Range" to "Region 1541 Type". 1542 1543 HMAT updates: make several existing fields to be reserved as well as 1544 rename subtable 0 to "memory proximity domain attributes". 1545 1546 GTDT: Add support for new GTDT Revision 3. This revision adds information 1547 for the EL2 timer. 1548 1549 iASL: Update the HMAT example template for new fields. 1550 1551 iASL: Add support for the new revision of the GTDT (Rev 3). 1552 1553 1554 1) ACPICA kernel-resident subsystem: 1555 1556 AML Parser: fix the main AML parse loop to correctly skip erroneous 1557 extended opcodes. AML opcodes come in two lengths: 1-byte opcodes and 2- 1558 byte extended opcodes. If an error occurs during an AML table load, the 1559 AML parser will continue loading the table by skipping the offending 1560 opcode. This implements a "load table at any cost" philosophy. 1561 1562 1563 2) iASL Compiler/Disassembler and Tools: 1564 1565 iASL: Add checks for illegal object references, such as a reference 1566 outside of method to an object within a method. Such an object is only 1567 temporary. 1568 1569 iASL: Emit error for creation of a zero-length operation region. Such a 1570 region is rather pointless. If encountered, a runtime error is also 1571 implemented in the interpreter. 1572 1573 Debugger: Fix a possible fault with the "test objects" command. 1574 1575 iASL: Makefile: support parent directory filenames containing embedded 1576 spaces. 1577 1578 iASL: Update the TPM2 template to revision 4. 1579 1580 iASL: Add the ability to report specific warnings or remarks as errors. 1581 1582 Disassembler: Disassemble OEMx tables as actual AML byte code. 1583 Previously, these tables were treated as "unknown table". 1584 1585 iASL: Add definition and disassembly for TPM2 revision 3. 1586 1587 iASL: Add support for TPM2 rev 3 compilation. 1588 1589 1590 ---------------------------------------- 1591 08 January 2019. Summary of changes for version 20190108: 1592 1593 1594 1) ACPICA kernel-resident subsystem: 1595 1596 Updated all copyrights to 2019. This affects all source code modules. 1597 1598 1599 2) iASL Compiler/Disassembler and Tools: 1600 1601 ASL test suite (ASLTS): Updated all copyrights to 2019. 1602 1603 Tools: Updated all signon copyrights to 2019. 1604 1605 AcpiExec: Added a new option to dump extra information concerning any 1606 memory leaks detected by the internal object/cache tracking mechanism. - 1607 va 1608 1609 iASL: Updated the table template for the TPM2 table to the newest version 1610 of the table (Revision 4) 1611 1612 1613 ---------------------------------------- 1614 13 December 2018. Summary of changes for version 20181213: 1615 1616 1617 1) ACPICA Kernel-resident Subsystem: 1618 1619 Fixed some buffer length issues with the GenericSerialBus, related to two 1620 of the bidirectional protocols: AttribRawProcessBytes and AttribRawBytes, 1621 which are rarely seen in the field. For these, the LEN field of the ASL 1622 buffer is now ignored. Hans de Goede 1623 1624 Implemented a new object evaluation trace mechanism for control methods 1625 and data objects. This includes nested control methods. It is 1626 particularly useful for examining the ACPI execution during system 1627 initialization since the output is relatively terse. The flag below 1628 enables the output of the trace via the ACPI_DEBUG_PRINT_RAW interface: 1629 #define ACPI_LV_EVALUATION 0x00080000 1630 1631 Examples: 1632 Enter evaluation : _SB.PCI0._INI (Method) 1633 Exit evaluation : _SB.PCI0._INI 1634 Enter evaluation : _OSI (Method) 1635 Exit evaluation : _OSI 1636 Enter evaluation : _SB.PCI0.TEST (Method) 1637 Nested method call : _SB.PCI0.NST1 1638 Exit nested method : _SB.PCI0.NST1 1639 Exit evaluation : _SB.PCI0.TEST 1640 1641 Added two recently-defined _OSI strings. See 1642 https://docs.microsoft.com/en-us/windows-hardware/drivers/acpi/winacpi- 1643 osi. 1644 "Windows 2018" 1645 "Windows 2018.2" 1646 1647 Update for buffer-to-string conversions via the ToHexString ASL operator. 1648 A "0x" is now prepended to each of the hex values in the output string. 1649 This provides compatibility with other ACPI implementations. The ACPI 1650 specification is somewhat vague on this issue. 1651 Example output string after conversion: 1652 "0x01,0x02,0x03,0x04,0x05,0x06" 1653 1654 Return a run-time error for TermArg expressions within individual package 1655 elements. Although this is technically supported by the ASL grammar, 1656 other ACPI implementations do not support this either. Also, this fixes a 1657 fault if this type of construct is ever encountered (it never has been). 1658 1659 1660 2) iASL Compiler/Disassembler and Tools: 1661 1662 iASL: Implemented a new compile option (-ww) that will promote individual 1663 warnings and remarks to errors. This is intended to enhance the firmware 1664 build process. 1665 1666 AcpiExec: Implemented a new command-line option (-eo) to support the new 1667 object evaluation trace mechanism described above. 1668 1669 Disassembler: Added support to disassemble OEMx tables as AML/ASL tables 1670 instead of a "unknown table" message. 1671 1672 AcpiHelp: Improved support for the "special" predefined names such as 1673 _Lxx, _Exx, _EJx, _T_x, etc. For these, any legal hex value can now be 1674 used for "xx" and "x". 1675 1676 ---------------------------------------- 1677 31 October 2018. Summary of changes for version 20181031: 1678 1679 1680 An Operation Region regression was fixed by properly adding address 1681 ranges to a global list during initialization. This allows OS to 1682 accurately check for overlapping regions between native devices (such as 1683 PCI) and Operation regions as well as checking for region conflicts 1684 between two Operation Regions. 1685 1686 Added support for the 2-byte extended opcodes in the code/feature that 1687 attempts to continue parsing during the table load phase. Skip parsing 1688 Device declarations (and other extended opcodes) when an error occurs 1689 during parsing. Previously, only single-byte opcodes were supported. 1690 1691 Cleanup: Simplified the module-level code support by eliminating a 1692 useless global variable (AcpiGbl_GroupModuleLeveCode). 1693 1694 1695 2) iASL Compiler/Disassembler and Tools: 1696 1697 iASL/Preprocessor: Fixed a regression where an incorrect use of ACPI_FREE 1698 could cause a fault in the preprocessor. This was an inadvertent side- 1699 effect from moving more allocations/frees to the local cache/memory 1700 mechanism. 1701 1702 iASL: Enhanced error detection by validating that all NameSeg elements 1703 within a NamePatch actually exist. The previous behavior was spotty at 1704 best, and such errors could be improperly ignored at compiler time (never 1705 at runtime, however. There are two new error messages, as shown in the 1706 examples below: 1707 1708 dsdt.asl 33: CreateByteField (TTTT.BXXX, 1, CBF1) 1709 Error 6161 - ^ One or more objects within 1710 the Pathname do not exist (TTTT.BXXX) 1711 1712 dsdt.asl 34: CreateByteField (BUF1, UUUU.INT1, BBBB.CBF1) 1713 Error 6160 - One or more prefix Scopes do not exist ^ 1714 (BBBB.CBF1) 1715 1716 iASL: Disassembler/table-compiler: Added support for the static data 1717 table TPM2 revision 3 (an older version of TPM2). The support has been 1718 added for the compiler and the disassembler. 1719 1720 Fixed compilation of DOS format data table file on Unix/Linux systems. 1721 iASL now properly detects line continuations (\) for DOS format data 1722 table definition language files on when executing on Unix/Linux. 1723 1724 ---------------------------------------- 1725 03 October 2018. Summary of changes for version 20181003: 1726 1727 1728 2) iASL Compiler/Disassembler and Tools: 1729 1730 Fixed a regression introduced in version 20180927 that could cause the 1731 compiler to fault, especially with NamePaths containing one or more 1732 carats (^). Such as: ^^_SB_PCI0 1733 1734 Added a new remark for the Sleep() operator when the sleep time operand 1735 is larger than one second. This is a very long time for the ASL/BIOS code 1736 and may not be what was intended by the ASL writer. 1737 1738 ---------------------------------------- 1739 27 September 2018. Summary of changes for version 20180927: 1740 1741 1742 1) ACPICA kernel-resident subsystem: 1743 1744 Updated the GPE support to clear the status of all ACPI events when 1745 entering any/all sleep states in order to avoid premature wakeups. In 1746 theory, this may cause some wakeup events to be missed, but the 1747 likelihood of this is small. This change restores the original behavior 1748 of the ACPICA code in order to fix a regression seen from the previous 1749 "Stop unconditionally clearing ACPI IRQs during suspend/resume" change. 1750 This regression could cause some systems to incorrectly wake immediately. 1751 1752 Updated the execution of the _REG methods during initialization and 1753 namespace loading to bring the behavior into closer conformance to the 1754 ACPI specification and other ACPI implementations: 1755 1756 From the ACPI specification 6.2A, section 6.5.4 "_REG (Region): 1757 "Control methods must assume all operation regions are inaccessible 1758 until the _REG(RegionSpace, 1) method is executed" 1759 1760 "The exceptions to this rule are: 1761 1. OSPM must guarantee that the following operation regions are always 1762 accessible: 1763 SystemIO operation regions. 1764 SystemMemory operation regions when accessing memory returned by the 1765 System Address Map reporting interfaces." 1766 1767 Since the state of both the SystemIO and SystemMemory address spaces are 1768 defined by the specification to never change, this ACPICA change ensures 1769 that now _REG is never called on them. This solves some problems seen in 1770 the field and provides compatibility with other ACPI implementations. An 1771 update to the upcoming new version of the ACPI specification will help 1772 clarify this behavior. 1773 1774 Updated the implementation of support for the Generic Serial Bus. For the 1775 "bidirectional" protocols, the internal implementation now automatically 1776 creates a return data buffer of the maximum size (255). This handles the 1777 worst-case for data that is returned from the serial bus handler, and 1778 fixes some problems seen in the field. This new buffer is directly 1779 returned to the ASL. As such, there is no true "bidirectional" buffer, 1780 which matches the ACPI specification. This is the reason for the "double 1781 store" seen in the example ASL code in the specification, shown below: 1782 1783 Word Process Call (AttribProcessCall): 1784 OperationRegion(TOP1, GenericSerialBus, 0x00, 0x100) 1785 Field(TOP1, BufferAcc, NoLock, Preserve) 1786 { 1787 FLD1, 8, // Virtual register at command value 1. 1788 } 1789 1790 Name(BUFF, Buffer(20){}) // Create GenericSerialBus data buffer 1791 // as BUFF 1792 CreateWordField(BUFF, 0x02, DATA) // DATA = Data (Word) 1793 1794 Store(0x5416, DATA) // Save 0x5416 into the data buffer 1795 Store(Store(BUFF, FLD1), BUFF) // Invoke a write/read Process Call 1796 transaction 1797 // This is the "double store". The write to 1798 // FLD1 returns a new buffer, which is stored 1799 // back into BUFF with the second Store. 1800 1801 1802 2) iASL Compiler/Disassembler and Tools: 1803 1804 iASL: Implemented detection of extraneous/redundant uses of the Offset() 1805 operator within a Field Unit list. A remark is now issued for these. For 1806 example, the first two of the Offset() operators below are extraneous. 1807 Because both the compiler and the interpreter track the offsets 1808 automatically, these Offsets simply refer to the current offset and are 1809 unnecessary. Note, when optimization is enabled, the iASL compiler will 1810 in fact remove the redundant Offset operators and will not emit any AML 1811 code for them. 1812 1813 OperationRegion (OPR1, SystemMemory, 0x100, 0x100) 1814 Field (OPR1) 1815 { 1816 Offset (0), // Never needed 1817 FLD1, 32, 1818 Offset (4), // Redundant, offset is already 4 (bytes) 1819 FLD2, 8, 1820 Offset (64), // OK use of Offset. 1821 FLD3, 16, 1822 } 1823 dsdt.asl 14: Offset (0), 1824 Remark 2158 - ^ Unnecessary/redundant use of Offset 1825 operator 1826 1827 dsdt.asl 16: Offset (4), 1828 Remark 2158 - ^ Unnecessary/redundant use of Offset 1829 operator 1830 1831 ---------------------------------------- 1832 10 August 2018. Summary of changes for version 20180810: 1833 1834 1835 1) ACPICA kernel-resident subsystem: 1836 1837 Initial ACPI table loading: Attempt to continue loading ACPI tables 1838 regardless of malformed AML. Since migrating table initialization to the 1839 new module-level code support, the AML interpreter rejected tables upon 1840 any ACPI error encountered during table load. This is a problem because 1841 non-serious ACPI errors during table load do not necessarily mean that 1842 the entire definition block (DSDT or SSDT) is invalid. This change 1843 improves the table loading by ignoring some types of errors that can be 1844 generated by incorrect AML. This can range from object type errors, scope 1845 errors, and index errors. 1846 1847 Suspend/Resume support: Update to stop unconditionally clearing ACPI IRQs 1848 during suspend/resume. The status of ACPI events is no longer cleared 1849 when entering the ACPI S5 system state (power off) which caused some 1850 systems to power up immediately after turning off power in certain 1851 situations. This was a functional regression. It was fixed by clearing 1852 the status of all ACPI events again when entering S5 (for system-wide 1853 suspend or hibernation the clearing of the status of all events is not 1854 desirable, as it might cause the kernel to miss wakeup events sometimes). 1855 Rafael Wysocki. 1856 1857 1858 2) iASL Compiler/Disassembler and Tools: 1859 1860 AcpiExec: Enhanced the -fi option (Namespace initialization file). Field 1861 elements listed in the initialization file were previously initialized 1862 after the table load and before executing module-level code blocks. 1863 Recent changes in the module-level code support means that the table load 1864 becomes a large control method execution. If fields are used within 1865 module-level code and we are executing with the -fi option, the 1866 initialization values were used to initialize the namespace object(s) 1867 only after the table was finished loading. This change Provides an early 1868 initialization of objects specified in the initialization file so that 1869 field unit values are populated during the table load (not after the 1870 load). 1871 1872 AcpiExec: Fixed a small memory leak regression that could result in 1873 warnings during exit of the utility. These warnings were similar to 1874 these: 1875 0002D690 Length 0x0006 nsnames-0502 [Not a Descriptor - too small] 1876 0002CD70 Length 0x002C utcache-0453 [Operand] Integer RefCount 0x0001 1877 1878 ---------------------------------------- 1879 29 June 2018. Summary of changes for version 20180629: 1880 1881 1882 1) iASL Compiler/Disassembler and Tools: 1883 1884 iASL: Fixed a regression related to the use of the ASL External 1885 statement. Error checking for the use of the External() statement has 1886 been relaxed. Previously, a restriction on the use of External meant that 1887 the referenced named object was required to be defined in a different 1888 table (an SSDT). Thus it would be an error to declare an object as an 1889 external and then define the same named object in the same table. For 1890 example: 1891 DefinitionBlock (...) 1892 { 1893 External (DEV1) 1894 Device (DEV1){...} // This was an error 1895 } 1896 However, this behavior has caused regressions in some existing ASL code, 1897 because there is code that depends on named objects and externals (with 1898 the same name) being declared in the same table. This change will allow 1899 the ASL code above to compile without errors or warnings. 1900 1901 iASL: Implemented ASL language extensions for four operators to make some 1902 of their arguments optional instead of required: 1903 1) Field (RegionName, AccessType, LockRule, UpdateRule) 1904 2) BankField (RegionName, BankName, BankValue, 1905 AccessType, LockRule, UpdateRule) 1906 3) IndexField (IndexName, DataName, 1907 AccessType, LockRule, UpdateRule) 1908 For the Field operators above, the AccessType, LockRule, and UpdateRule 1909 are now optional arguments. The default values are: 1910 AccessType: AnyAcc 1911 LockRule: NoLock 1912 UpdateRule: Preserve 1913 4) Mutex (MutexName, SyncLevel) 1914 For this operator, the SyncLevel argument is now optional. This argument 1915 is rarely used in any meaningful way by ASL code, and thus it makes sense 1916 to make it optional. The default value is: 1917 SyncLevel: 0 1918 1919 iASL: Attempted use of the ASL Unload() operator now results in the 1920 following warning: 1921 "Unload is not supported by all operating systems" 1922 This is in fact very true, and the Unload operator may be completely 1923 deprecated in the near future. 1924 1925 AcpiExec: Fixed a regression for the -fi option (Namespace initialization 1926 file. Recent changes in the ACPICA module-level code support altered the 1927 table load/initialization sequence . This means that the table load has 1928 become a large method execution of the table itself. If Operation Region 1929 Fields are used within any module-level code and the -fi option was 1930 specified, the initialization values were populated only after the table 1931 had completely finished loading (and thus the module-level code had 1932 already been executed). This change moves the initialization of objects 1933 listed in the initialization file to before the table is executed as a 1934 method. Field unit values are now initialized before the table execution 1935 is performed. 1936 1937 ---------------------------------------- 1938 31 May 2018. Summary of changes for version 20180531: 1939 1940 1941 1) ACPICA kernel-resident Subsystem: 1942 1943 Implemented additional support to help ensure that a DSDT or SSDT is 1944 fully loaded even if errors are incurred during the load. The majority of 1945 the problems that are seen is the failure of individual AML operators 1946 that occur during execution of any module-level code (MLC) existing in 1947 the table. This support adds a mechanism to abort the current ASL 1948 statement (AML opcode), emit an error message, and to simply move on to 1949 the next opcode -- instead of aborting the entire table load. This is 1950 different than the execution of a control method where the entire method 1951 is aborted upon any error. The goal is to perform a very "best effort" to 1952 load the ACPI tables. The most common MLC errors that have been seen in 1953 the field are direct references to unresolved ASL/AML symbols (referenced 1954 directly without the use of the CondRefOf operator to validate the 1955 symbol). This new ACPICA behavior is now compatible with other ACPI 1956 implementations. 1957 1958 Interpreter: The Unload AML operator is no longer supported for the 1959 reasons below. An AE_NOT_IMPLEMENTED exception is returned. 1960 1) A correct implementation on at least some hosts may not be possible. 1961 2) Other ACPI implementations do not correctly/fully support it. 1962 3) It requires host device driver support which is not known to exist. 1963 (To properly support namespace unload out from underneath.) 1964 4) This AML operator has never been seen in the field. 1965 1966 Parser: Added a debug option to dump AML parse sub-trees as they are 1967 being executed. Used with ACPI_DEBUG_PRINT, the enabling debug level is 1968 ACPI_DB_PARSE_TREES. 1969 1970 Debugger: Reduced the verbosity for errors incurred during table load and 1971 module-level code execution. 1972 1973 Completed an investigation into adding a namespace node "owner list" 1974 instead of the current "owner ID" associated with namespace nodes. This 1975 list would link together all nodes that are owned by an individual 1976 control method. The purpose would be to enhance control method execution 1977 by speeding up cleanup during method exit (all namespace nodes created by 1978 a method are deleted upon method termination.) Currently, the entire 1979 namespace must be searched for matching owner IDs if (and only if) the 1980 method creates named objects outside of the local scope. However, by far 1981 the most common case is that methods create objects locally, not outside 1982 the method scope. There is already an ACPICA optimization in place that 1983 only searches the entire namespace in the rare case of a method creating 1984 objects elsewhere in the namespace. Therefore, it is felt that the 1985 overhead of adding an additional pointer to each namespace node to 1986 implement the owner list makes this feature unnecessary. 1987 1988 1989 2) iASL Compiler/Disassembler and Tools: 1990 1991 iASL, Disassembler, and Template generator: Implemented support for 1992 Revision D of the IORT table. Adds a new subtable that is used to specify 1993 SMMUv3 PMCGs. rmurphy-arm. 1994 1995 Disassembler: Restored correct table header validation for the "special" 1996 ACPI tables -- RSDP and FACS. These tables do not contain a standard ACPI 1997 table header and must be special-cased. This was a regression that has 1998 been present for apparently a long time. 1999 2000 AcpiExec: Reduced verbosity of the local exception handler implemented 2001 within acpiexec. This handler is invoked by ACPICA upon any exceptions 2002 generated during control method execution. A new option was added: -vh 2003 restores the original verbosity level if desired. 2004 2005 AcpiExec: Changed the default base from decimal to hex for the -x option 2006 (set debug level). This simplifies the use of this option and matches the 2007 behavior of the corresponding iASL -x option. 2008 2009 AcpiExec: Restored a force-exit on multiple control-c (sigint) 2010 interrupts. This allows program termination even if other issues cause 2011 the control-c to fail. 2012 2013 ASL test suite (ASLTS): Added tests for the recently implemented package 2014 element resolution mechanism that allows forward references to named 2015 objects from individual package elements (this mechanism provides 2016 compatibility with other ACPI implementations.) 2017 2018 2019 ---------------------------------------- 2020 8 May 2018. Summary of changes for version 20180508: 2021 2022 2023 1) ACPICA kernel-resident subsystem: 2024 2025 Completed the new (recently deployed) package resolution mechanism for 2026 the Load and LoadTable ASL/AML operators. This fixes a regression that 2027 was introduced in version 20180209 that could result in an 2028 AE_AML_INTERNAL exception during the loading of a dynamic ACPI/AML table 2029 (SSDT) that contains package objects. 2030 2031 2032 2) iASL Compiler/Disassembler and Tools: 2033 2034 AcpiDump and AcpiXtract: Implemented support for ACPI tables larger than 2035 1 MB. This change allows for table offsets within the acpidump file to be 2036 up to 8 characters. These changes are backwards compatible with existing 2037 acpidump files. 2038 2039 2040 ---------------------------------------- 2041 27 April 2018. Summary of changes for version 20180427: 2042 2043 2044 1) ACPICA kernel-resident subsystem: 2045 2046 Debugger: Added support for Package objects in the "Test Objects" 2047 command. This command walks the entire namespace and evaluates all named 2048 data objects (Integers, Strings, Buffers, and now Packages). 2049 2050 Improved error messages for the namespace root node. Originally, the root 2051 was referred to by the confusing string "\___". This has been replaced by 2052 "Namespace Root" for clarification. 2053 2054 Fixed a potential infinite loop in the AcpiRsDumpByteList function. Colin 2055 Ian King <colin.king (a] canonical.com>. 2056 2057 2058 2) iASL Compiler/Disassembler and Tools: 2059 2060 iASL: Implemented support to detect and flag illegal forward references. 2061 For compatibility with other ACPI implementations, these references are 2062 now illegal at the root level of the DSDT or SSDTs. Forward references 2063 have always been illegal within control methods. This change should not 2064 affect existing ASL/AML code because of the fact that these references 2065 have always been illegal in the other ACPI implementation. 2066 2067 iASL: Added error messages for the case where a table OEM ID and OEM 2068 TABLE ID strings are longer than the ACPI-defined length. Previously, 2069 these strings were simply silently truncated. 2070 2071 iASL: Enhanced the -tc option (which creates an AML hex file in C, 2072 suitable for import into a firmware project): 2073 1) Create a unique name for the table, to simplify use of multiple 2074 SSDTs. 2075 2) Add a protection #ifdef in the file, similar to a .h header file. 2076 With assistance from Sami Mujawar, sami.mujawar (a] arm.com and Evan Lloyd, 2077 evan.lloyd (a] arm.com 2078 2079 AcpiExec: Added a new option, -df, to disable the local fault handler. 2080 This is useful during debugging, where it may be desired to drop into a 2081 debugger on a fault. 2082 2083 ---------------------------------------- 2084 13 March 2018. Summary of changes for version 20180313: 2085 2086 2087 1) ACPICA kernel-resident subsystem: 2088 2089 Implemented various improvements to the GPE support: 2090 2091 1) Dispatch all active GPEs at initialization time so that no GPEs are 2092 lost. 2093 2) Enable runtime GPEs earlier. Some systems expect GPEs to be enabled 2094 before devices are enumerated. 2095 3) Don't unconditionally clear ACPI IRQs during suspend/resume, so that 2096 IRQs are not lost. 2097 4) Add parallel GPE handling to eliminate the possibility of dispatching 2098 the same GPE twice. 2099 5) Dispatch any pending GPEs after enabling for the first time. 2100 2101 AcpiGetObjectInfo - removed support for the _STA method. This was causing 2102 problems on some platforms. 2103 2104 Added a new _OSI string, "Windows 2017.2". 2105 2106 Cleaned up and simplified the module-level code support. These changes 2107 are in preparation for the eventual removal of the legacy MLC support 2108 (deferred execution), replaced by the new MLC architecture which executes 2109 the MLC as a table is loaded (DSDT/SSDTs). 2110 2111 Changed a compile-time option to a runtime option. Changes the option to 2112 ignore ACPI table load-time package resolution errors into a runtime 2113 option. Used only for platforms that generate many AE_NOT_FOUND errors 2114 during boot. AcpiGbl_IgnorePackageResolutionErrors. 2115 2116 Fixed the ACPI_ERROR_NAMESPACE macro. This change involves putting some 2117 ACPI_ERROR_NAMESPACE parameters inside macros. By doing so, we avoid 2118 compilation errors from unused variables (seen with some compilers). 2119 2120 2121 2) iASL Compiler/Disassembler and Tools: 2122 2123 ASLTS: parallelized execution in order to achieve an (approximately) 2X 2124 performance increase. 2125 2126 ASLTS: Updated to use the iASL __LINE__ and __METHOD__ macros. Improves 2127 error reporting. 2128 2129 ---------------------------------------- 2130 09 February 2018. Summary of changes for version 20180209: 2131 2132 2133 1) ACPICA kernel-resident subsystem: 2134 2135 Completed the final integration of the recent changes to Package Object 2136 handling and the module-level AML code support. This allows forward 2137 references from individual package elements when the package object is 2138 declared from within module-level code blocks. Provides compatibility 2139 with other ACPI implementations. 2140 2141 The new architecture for the AML module-level code has been completed and 2142 is now the default for the ACPICA code. This new architecture executes 2143 the module-level code in-line as the ACPI table is loaded/parsed instead 2144 of the previous architecture which deferred this code until after the 2145 table was fully loaded. This solves some ASL code ordering issues and 2146 provides compatibility with other ACPI implementations. At this time, 2147 there is an option to fallback to the earlier architecture, but this 2148 support is deprecated and is planned to be completely removed later this 2149 year. 2150 2151 Added a compile-time option to ignore AE_NOT_FOUND exceptions during 2152 resolution of named reference elements within Package objects. Although 2153 this is potentially a serious problem, it can generate a lot of 2154 noise/errors on platforms whose firmware carries around a bunch of unused 2155 Package objects. To disable these errors, define 2156 ACPI_IGNORE_PACKAGE_RESOLUTION_ERRORS in the OS-specific header. All 2157 errors are always reported for ACPICA applications such as AcpiExec. 2158 2159 Fixed a regression related to the explicit type-conversion AML operators 2160 (ToXXXX). The regression was introduced early in 2017 but was not seen 2161 until recently because these operators are not fully supported by other 2162 ACPI implementations and are thus rarely used by firmware developers. The 2163 operators are defined by the ACPI specification to not implement the 2164 "implicit result object conversion". The regression incorrectly 2165 introduced this object conversion for the following explicit conversion 2166 operators: 2167 ToInteger 2168 ToString 2169 ToBuffer 2170 ToDecimalString 2171 ToHexString 2172 ToBCD 2173 FromBCD 2174 2175 2176 2) iASL Compiler/Disassembler and Tools: 2177 2178 iASL: Fixed a problem with the compiler constant folding feature as 2179 related to the ToXXXX explicit conversion operators. These operators do 2180 not support the "implicit result object conversion" by definition. Thus, 2181 ASL expressions that use these operators cannot be folded to a simple 2182 Store operator because Store implements the implicit conversion. This 2183 change uses the CopyObject operator for the ToXXXX operator folding 2184 instead. CopyObject is defined to not implement implicit result 2185 conversions and is thus appropriate for folding the ToXXXX operators. 2186 2187 iASL: Changed the severity of an error condition to a simple warning for 2188 the case where a symbol is declared both locally and as an external 2189 symbol. This accommodates existing ASL code. 2190 2191 AcpiExec: The -ep option to enable the new architecture for module-level 2192 code has been removed. It is replaced by the -dp option which instead has 2193 the opposite effect: it disables the new architecture (the default) and 2194 enables the legacy architecture. When the legacy code is removed in the 2195 future, the -dp option will be removed also. 2196 2197 ---------------------------------------- 2198 05 January 2018. Summary of changes for version 20180105: 2199 2200 2201 1) ACPICA kernel-resident subsystem: 2202 2203 Updated all copyrights to 2018. This affects all source code modules. 2204 2205 Fixed a possible build error caused by an unresolved reference to the 2206 AcpiUtSafeStrncpy function. 2207 2208 Removed NULL pointer arithmetic in the various pointer manipulation 2209 macros. All "(void *) NULL" constructs are converted to "(void *) 0". 2210 This eliminates warnings/errors in newer C compilers. Jung-uk Kim. 2211 2212 Added support for A32 ABI compilation, which uses the ILP32 model. Anuj 2213 Mittal. 2214 2215 2216 2) iASL Compiler/Disassembler and Tools: 2217 2218 ASLTS: Updated all copyrights to 2018. 2219 2220 Tools: Updated all signon copyrights to 2018. 2221 2222 AcpiXtract: Fixed a regression related to ACPI table signatures where the 2223 signature was truncated to 3 characters (instead of 4). 2224 2225 AcpiExec: Restore the original terminal mode after the use of the -v and 2226 -vd options. 2227 2228 ASLTS: Deployed the iASL __METHOD__ macro across the test suite. 2229 2230 ---------------------------------------- 2231 14 December 2017. Summary of changes for version 20171214: 2232 2233 2234 1) ACPICA kernel-resident subsystem: 2235 2236 Fixed a regression in the external (public) AcpiEvaluateObjectTyped 2237 interface where the optional "pathname" argument had inadvertently become 2238 a required argument returning an error if omitted (NULL pointer 2239 argument). 2240 2241 Fixed two possible memory leaks related to the recently developed "late 2242 resolution" of reference objects within ASL Package Object definitions. 2243 2244 Added two recently defined _OSI strings: "Windows 2016" and "Windows 2245 2017". Mario Limonciello. 2246 2247 Implemented and deployed a safer version of the C library function 2248 strncpy: AcpiUtSafeStrncpy. The intent is to at least prevent the 2249 creation of unterminated strings as a possible result of a standard 2250 strncpy. 2251 2252 Cleaned up and restructured the global variable file (acglobal.h). There 2253 are many changes, but no functional changes. 2254 2255 2256 2) iASL Compiler/Disassembler and Tools: 2257 2258 iASL Table Compiler: Fixed a problem with the DBG2 ACPI table where the 2259 optional OemData field at the end of the table was incorrectly required 2260 for proper compilation. It is now correctly an optional field. 2261 2262 ASLTS: The entire suite was converted from standard ASL to the ASL+ 2263 language, using the ASL-to-ASL+ converter which is integrated into the 2264 iASL compiler. A binary compare of all output files has verified the 2265 correctness of the conversion. 2266 2267 iASL: Fixed the source code build for platforms where "char" is unsigned. 2268 This affected the iASL lexer only. Jung-uk Kim. 2269 2270 ---------------------------------------- 2271 10 November 2017. Summary of changes for version 20171110: 2272 2273 2274 1) ACPICA kernel-resident subsystem: 2275 2276 This release implements full support for ACPI 6.2A: 2277 NFIT - Added a new subtable, "Platform Capabilities Structure" 2278 No other changes to ACPICA were required, since ACPI 6.2A is primarily an 2279 errata release of the specification. 2280 2281 Other ACPI table changes: 2282 IORT: Added the SMMUv3 Device ID mapping index. Hanjun Guo 2283 PPTT: Added cache attribute flag definitions to actbl1.h. Jeremy 2284 Linton 2285 2286 Utilities: Modified the string/integer conversion functions to use 2287 internal 64-bit divide support instead of a native divide. On 32-bit 2288 platforms, a 64-bit divide typically requires a library function which 2289 may not be present in the build (kernel or otherwise). 2290 2291 Implemented a targeted error message for timeouts returned from the 2292 Embedded Controller device driver. This is seen frequently enough to 2293 special-case an AE_TIME returned from an EC operation region access: 2294 "Timeout from EC hardware or EC device driver" 2295 2296 Changed the "ACPI Exception" message prefix to "ACPI Error" so that all 2297 runtime error messages have the identical prefix. 2298 2299 2300 2) iASL Compiler/Disassembler and Tools: 2301 2302 AcpiXtract: Fixed a problem with table header detection within the 2303 acpidump file. Processing a table could be ended early if a 0x40 (@) 2304 appears in the original binary table, resulting in the @ symbol appearing 2305 in the decoded ASCII field at the end of the acpidump text line. The 2306 symbol caused acpixtract to incorrectly think it had reached the end of 2307 the current table and the beginning of a new table. 2308 2309 AcpiXtract: Added an option (-f) to ignore some errors during table 2310 extraction. This initial implementation ignores non-ASCII and non- 2311 printable characters found in the acpidump text file. 2312 2313 TestSuite(ASLTS)/AcpiExec: Fixed and restored the memory usage statistics 2314 for ASLTS. This feature is used to track memory allocations from 2315 different memory caches within the ACPICA code. At the end of an ASLTS 2316 run, these memory statistics are recorded and stored in a log file. 2317 2318 Debugger (user-space version): Implemented a simple "Background" command. 2319 Creates a new thread to execute a control method in the background, while 2320 control returns to the debugger prompt to allow additional commands. 2321 Syntax: Background <Namepath> [Arguments] 2322 2323 ---------------------------------------- 2324 29 September 2017. Summary of changes for version 20170929: 2325 2326 2327 1) ACPICA kernel-resident subsystem: 2328 2329 Redesigned and implemented an improved ASL While() loop timeout 2330 mechanism. This mechanism is used to prevent infinite loops in the kernel 2331 AML interpreter caused by either non-responsive hardware or incorrect AML 2332 code. The new implementation uses AcpiOsGetTimer instead of a simple 2333 maximum loop count, and is thus more accurate and constant across 2334 different machines. The default timeout is currently 30 seconds, but this 2335 may be adjusted later. 2336 2337 Renamed the ACPI_AML_INFINITE_LOOP exception to AE_AML_LOOP_TIMEOUT to 2338 better reflect the new implementation of the loop timeout mechanism. 2339 2340 Updated the AcpiGetTimerDuration interface to cleanup the 64-bit support 2341 and to fix an off-by-one error. Jung-uk Kim. 2342 2343 Fixed an EFI build problem by updating the makefiles to for a new file 2344 that was added, utstrsuppt.c 2345 2346 2347 2) iASL Compiler/Disassembler and Tools: 2348 2349 Implemented full support for the PDTT, SDEV, and TPM2 ACPI tables. This 2350 includes support in the table disassembler, compiler, and template 2351 generator. 2352 2353 iASL: Added an exception for an illegal type of recursive method 2354 invocation. If a method creates named objects, the first recursive call 2355 will fail at runtime. This change adds an error detection at compile time 2356 to catch the problem up front. Note: Marking such a method as 2357 "serialized" will not help with this problem, because the same thread can 2358 acquire the method mutex more than once. Example compiler and runtime 2359 output: 2360 2361 Method (MTH1) 2362 { 2363 Name (INT1, 1) 2364 MTH1 () 2365 } 2366 2367 dsdt.asl 22: MTH1 () 2368 Error 6152 - ^ Illegal recursive call to method 2369 that creates named objects (MTH1) 2370 2371 Previous runtime exception: 2372 ACPI Error: [INT1] Namespace lookup failure, 2373 AE_ALREADY_EXISTS (20170831/dswload2-465) 2374 2375 iASL: Updated support for External() opcodes to improve namespace 2376 management and error detection. These changes are related to issues seen 2377 with multiple-segment namespace pathnames within External declarations, 2378 such as below: 2379 2380 External(\_SB.PCI0.GFX0, DeviceObj) 2381 External(\_SB.PCI0.GFX0.ALSI) 2382 2383 iASL: Implemented support for multi-line error/warning messages. This 2384 enables more detailed and helpful error messages as below, from the 2385 initial deployment for the duplicate names error: 2386 2387 DSDT.iiii 1692: Device(PEG2) { 2388 Error 6074 - ^ Name already exists in scope 2389 (PEG2) 2390 2391 Original name creation/declaration below: 2392 DSDT.iiii 93: External(\_SB.PCI0.PEG2, DeviceObj) 2393 2394 AcpiXtract: Added additional flexibility to support differing input hex 2395 dump formats. Specifically, hex dumps that contain partial disassembly 2396 and/or comments within the ACPI table data definition. There exist some 2397 dump utilities seen in the field that create this type of hex dump (such 2398 as Simics). For example: 2399 2400 DSDT @ 0xdfffd0c0 (10999 bytes) 2401 Signature DSDT 2402 Length 10999 2403 Revision 1 2404 Checksum 0xf3 (Ok) 2405 OEM_ID BXPC 2406 OEM_table_id BXDSDT 2407 OEM_revision 1 2408 Creator_id 1280593481 2409 Creator_revision 537399345 2410 0000: 44 53 44 54 f7 2a 00 00 01 f3 42 58 50 43 00 00 2411 ... 2412 2af0: 5f 4c 30 46 00 a4 01 2413 2414 Test suite: Miscellaneous changes/fixes: 2415 More cleanup and simplification of makefiles 2416 Continue compilation of test cases after a compile failure 2417 Do not perform binary compare unless both files actually exist 2418 2419 iASL: Performed some code/module restructuring. Moved all memory 2420 allocation functions to new modules. Two new files, aslallocate.c and 2421 aslcache.c 2422 2423 ---------------------------------------- 2424 31 August 2017. Summary of changes for version 20170831: 2425 2426 2427 1) ACPICA kernel-resident subsystem: 2428 2429 Implemented internal support for full 64-bit addresses that appear in all 2430 Generic Address Structure (GAS) structures. Previously, only the lower 32 2431 bits were used. Affects the use of GAS structures in the FADT and other 2432 tables, as well as the GAS structures passed to the AcpiRead and 2433 AcpiWrite public external interfaces that are used by drivers. Lv Zheng. 2434 2435 Added header support for the PDTT ACPI table (Processor Debug Trigger 2436 Table). Full support in the iASL Data Table Compiler and disassembler is 2437 forthcoming. 2438 2439 2440 2) iASL Compiler/Disassembler and Tools: 2441 2442 iASL/Disassembler: Fixed a problem with the PPTT ACPI table (Processor 2443 Properties Topology Table) where a flag bit was specified in the wrong 2444 bit position ("Line Size Valid", bit 6). 2445 2446 iASL: Implemented support for Octal integer constants as defined by the 2447 ASL language grammar, per the ACPI specification. Any integer constant 2448 that starts with a zero is an octal constant. For example, 2449 Store (037777, Local0) /* Octal constant */ 2450 Store (0x3FFF, Local0) /* Hex equivalent */ 2451 Store (16383, Local0) /* Decimal equivalent */ 2452 2453 iASL: Improved overflow detection for 64-bit string conversions during 2454 compilation of integer constants. "Overflow" in this case means a string 2455 that represents an integer that is too large to fit into a 64-bit value. 2456 Any 64-bit constants within a 32-bit DSDT or SSDT are still truncated to 2457 the low-order 32 bits with a warning, as previously implemented. Several 2458 new exceptions are defined that indicate a 64-bit overflow, as well as 2459 the base (radix) that was used during the attempted conversion. Examples: 2460 Local0 = 0xAAAABBBBCCCCDDDDEEEEFFFF // AE_HEX_OVERFLOW 2461 Local0 = 01111222233334444555566667777 // AE_OCTAL_OVERFLOW 2462 Local0 = 11112222333344445555666677778888 // AE_DECIMAL_OVERFLOW 2463 2464 iASL: Added a warning for the case where a ResourceTemplate is declared 2465 with no ResourceDescriptor entries (coded as "ResourceTemplate(){}"). In 2466 this case, the resulting template is created with a single END_TAG 2467 descriptor, which is essentially useless. 2468 2469 iASL: Expanded the -vw option (ignore specific warnings/remarks) to 2470 include compilation error codes as well. 2471 2472 ---------------------------------------- 2473 28 July 2017. Summary of changes for version 20170728: 2474 2475 2476 1) ACPICA kernel-resident subsystem: 2477 2478 Fixed a regression seen with small resource descriptors that could cause 2479 an inadvertent AE_AML_NO_RESOURCE_END_TAG exception. 2480 2481 AML interpreter: Implemented a new feature that allows forward references 2482 from individual named references within package objects that are 2483 contained within blocks of "module-level code". This provides 2484 compatibility with other ACPI implementations and supports existing 2485 firmware that depends on this feature. Example: 2486 2487 Name (ABCD, 1) 2488 If (ABCD) /* An If() at module-level */ 2489 { 2490 Name (PKG1, Package() 2491 { 2492 INT1 /* Forward reference to object INT1 2493 */ 2494 }) 2495 Name (INT1, 0x1234) 2496 } 2497 2498 AML Interpreter: Fixed a problem with the Alias() operator where aliases 2499 to some ASL objects were not handled properly. Objects affected are: 2500 Mutex, Event, and OperationRegion. 2501 2502 AML Debugger: Enhanced to properly handle AML Alias objects. These 2503 objects have one level of indirection which was not fully supported by 2504 the debugger. 2505 2506 Table Manager: Added support to detect and ignore duplicate SSDTs within 2507 the XSDT/RSDT. This error in the XSDT has been seen in the field. 2508 2509 EFI and EDK2 support: 2510 Enabled /WX flag for MSVC builds 2511 Added support for AcpiOsStall, AcpiOsSleep, and AcpiOsGetTimer 2512 Added local support for 64-bit multiply and shift operations 2513 Added support to compile acpidump.efi on Windows 2514 Added OSL function stubs for interfaces not used under EFI 2515 2516 Added additional support for the _DMA predefined name. _DMA returns a 2517 buffer containing a resource template. This change add support within the 2518 resource manager (AcpiWalkResourceBuffer) to walk and parse this list of 2519 resource descriptors. Lorenzo Pieralisi <lorenzo.pieralisi (a] arm.com> 2520 2521 2522 2) iASL Compiler/Disassembler and Tools: 2523 2524 iASL: Fixed a problem where the internal input line buffer(s) could 2525 overflow if there are very long lines in the input ASL source code file. 2526 Implemented buffer management that automatically increases the size of 2527 the buffers as necessary. 2528 2529 iASL: Added an option (-vx) to "expect" particular remarks, warnings and 2530 errors. If the specified exception is not raised during compilation, the 2531 compiler emits an error. This is intended to support the ASL test suite, 2532 but may be useful in other contexts. 2533 2534 iASL: Implemented a new predefined macro, __METHOD__, which returns a 2535 string containing the name of the current control method that is being 2536 compiled. 2537 2538 iASL: Implemented debugger and table compiler support for the SDEI ACPI 2539 table (Software Delegated Exception Interface). James Morse 2540 <james.morse (a] arm.com> 2541 2542 Unix/Linux makefiles: Added an option to disable compile optimizations. 2543 The disable occurs when the NOOPT flag is set to TRUE. 2544 theracermaster (a] gmail.com 2545 2546 Acpidump: Added support for multiple DSDT and FACS tables. This can occur 2547 when there are different tables for 32-bit versus 64-bit. 2548 2549 Enhanced error reporting for the ASL test suite (ASLTS) by removing 2550 unnecessary/verbose text, and emit the actual line number where an error 2551 has occurred. These changes are intended to improve the usefulness of the 2552 test suite. 2553 2554 ---------------------------------------- 2555 29 June 2017. Summary of changes for version 20170629: 2556 2557 2558 1) ACPICA kernel-resident subsystem: 2559 2560 Tables: Implemented a deferred ACPI table verification. This is useful 2561 for operating systems where the tables cannot be verified in the early 2562 initialization stage due to early memory mapping limitations on some 2563 architectures. Lv Zheng. 2564 2565 Tables: Removed the signature validation for dynamically loaded tables. 2566 Provides compatibility with other ACPI implementations. Previously, only 2567 SSDT tables were allowed, as per the ACPI specification. Now, any table 2568 signature can be used via the Load() operator. Lv Zheng. 2569 2570 Tables: Fixed several mutex issues that could cause errors during table 2571 acquisition. Lv Zheng. 2572 2573 Tables: Fixed a problem where an ACPI warning could be generated if a 2574 null pointer was passed to the AcpiPutTable interface. Lv Zheng. 2575 2576 Tables: Added a mechanism to handle imbalances for the AcpiGetTable and 2577 AcpiPutTable interfaces. This applies to the "late stage" table loading 2578 when the use of AcpiPutTable is no longer required (since the system 2579 memory manager is fully running and available). Lv Zheng. 2580 2581 Fixed/Reverted a regression during processing of resource descriptors 2582 that contain only a single EndTag. Fixes an AE_AML_NO_RESOURCE_END_TAG 2583 exception in this case. 2584 2585 Headers: IORT/SMMU support: Updated the SMMU models for Revision C of the 2586 I/O Remapping specification. Robin Murphy <robin.murphy (a] arm.com> 2587 2588 Interpreter: Fixed a possible fault if an Alias operator with an invalid 2589 or duplicate target is encountered during Alias creation in 2590 AcpiExCreateAlias. Alex James <theracermaster (a] gmail.com> 2591 2592 Added an option to use designated initializers for function pointers. 2593 Kees Cook <keescook (a] google.com> 2594 2595 2596 2) iASL Compiler/Disassembler and Tools: 2597 2598 iASL: Allow compilation of External declarations with target pathnames 2599 that refer to existing named objects within the table. Erik Schmauss. 2600 2601 iASL: Fixed a regression when compiling FieldUnits. Fixes an error if a 2602 FieldUnit name also is declared via External in the same table. Erik 2603 Schmauss. 2604 2605 iASL: Allow existing scope names within pathnames used in External 2606 statements. For example: 2607 External (ABCD.EFGH) // ABCD exists, but EFGH is truly external 2608 Device (ABCD) 2609 2610 iASL: IORT ACPI table: Implemented changes required to decode the new 2611 Proximity Domain for the SMMUv3 IORT. Disassembler and Data Table 2612 compiler. Ganapatrao Kulkarni <ganapatrao.kulkarni (a] cavium.com> 2613 2614 Disassembler: Don't abort disassembly on errors from External() 2615 statements. Erik Schmauss. 2616 2617 Disassembler: fixed a possible fault when one of the Create*Field 2618 operators references a Resource Template. ACPICA Bugzilla 1396. 2619 2620 iASL: In the source code, resolved some naming inconsistences across the 2621 parsing support. Fixes confusion between "Parse Op" and "Parse Node". 2622 Adds a new file, aslparseop.c 2623 2624 ---------------------------------------- 2625 31 May 2017. Summary of changes for version 20170531: 2626 2627 2628 0) ACPI 6.2 support: 2629 2630 The ACPI specification version 6.2 has been released and is available at 2631 http://uefi.org/specifications 2632 2633 This version of ACPICA fully supports the ACPI 6.2 specification. Changes 2634 are summarized below. 2635 2636 New ACPI tables (Table Compiler/Disassembler/Templates): 2637 HMAT (Heterogeneous Memory Attributes Table) 2638 WSMT (Windows SMM Security Mitigation Table) 2639 PPTT (Processor Properties Topology Table) 2640 2641 New subtables for existing ACPI tables: 2642 HEST (New subtable, Arch-deferred machine check) 2643 SRAT (New subtable, Arch-specific affinity structure) 2644 PCCT (New subtables, Extended PCC subspaces (types 3 and 4)) 2645 2646 Simple updates for existing ACPI tables: 2647 BGRT (two new flag bits) 2648 HEST (New bit defined for several subtables, GHES_ASSIST) 2649 2650 New Resource Descriptors and Resource macros (Compiler/Disassembler): 2651 PinConfig() 2652 PinFunction() 2653 PinGroup() 2654 PinGroupConfig() 2655 PinGroupFunction() 2656 New type for hardware error notification (section 18.3.2.9) 2657 2658 New predefined names/methods (Compiler/Interpreter): 2659 _HMA (Heterogeneous Memory Attributes) 2660 _LSI (Label Storage Information) 2661 _LSR (Label Storage Read) 2662 _LSW (Label Storage Write) 2663 2664 ASL grammar/macro changes (Compiler): 2665 For() ASL macro, implemented with the AML while operator 2666 Extensions to Concatenate operator 2667 Support for multiple definition blocks in same ASL file 2668 Clarification for Buffer operator 2669 Allow executable AML code underneath all scopes (Devices, etc.) 2670 Clarification/change for the _OSI return value 2671 ASL grammar update for reference operators 2672 Allow a zero-length string for AML filename in DefinitionBlock 2673 2674 Miscellaneous: 2675 New device object notification value 2676 Remove a notify value (0x0C) for graceful shutdown 2677 New UUIDs for processor/cache properties and 2678 physical package property 2679 New _HID, ACPI0014 (Wireless Power Calibration Device) 2680 2681 2682 1) ACPICA kernel-resident subsystem: 2683 2684 Added support to disable ACPI events on hardware-reduced platforms. 2685 Eliminates error messages of the form "Could not enable fixed event". Lv 2686 Zheng 2687 2688 Fixed a problem using Device/Thermal objects with the ObjectType and 2689 DerefOf ASL operators. This support had not been fully/properly 2690 implemented. 2691 2692 Fixed a problem where if a Buffer object containing a resource template 2693 was longer than the actual resource template, an error was generated -- 2694 even though the AML is legal. This case has been seen in the field. 2695 2696 Fixed a problem with the header definition of the MADT PCAT_COMPAT flag. 2697 The values for DUAL_PIC and MULTIPLE_APIC were reversed. 2698 2699 Added header file changes for the TPM2 ACPI table. Update to new version 2700 of the TCG specification. Adds a new TPM2 subtable for ARM SMC. 2701 2702 Exported the external interfaces AcpiAcquireMutex and AcpiReleaseMutex. 2703 These interfaces are intended to be used only in conjunction with the 2704 predefined _DLM method (Device Lock Method). "This object appears in a 2705 device scope when AML access to the device must be synchronized with the 2706 OS environment". 2707 2708 Example Code and Data Size: These are the sizes for the OS-independent 2709 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2710 debug version of the code includes the debug output trace mechanism and 2711 has a much larger code and data size. 2712 2713 Current Release: 2714 Non-Debug Version: 143.1K Code, 60.0K Data, 203.1K Total 2715 Debug Version: 204.0K Code, 84.3K Data, 288.3K Total 2716 Previous Release: 2717 Non-Debug Version: 141.7K Code, 58.5K Data, 200.2K Total 2718 Debug Version: 207.5K Code, 82.7K Data, 290.2K Total 2719 2720 2721 2) iASL Compiler/Disassembler and Tools: 2722 2723 iASL: Fixed a problem where an External() declaration could not refer to 2724 a Field Unit. Erik Schmauss. 2725 2726 Disassembler: Improved support for the Switch/Case operators. This 2727 feature will disassemble AML code back to the original Switch operators 2728 when possible, instead of an If..Else sequence. David Box 2729 2730 iASL and disassembler: Improved the handling of multiple extraneous 2731 parentheses for both ASL input and disassembled ASL output. 2732 2733 Improved the behavior of the iASL compiler and disassembler to detect 2734 improper use of external declarations 2735 2736 Disassembler: Now aborts immediately upon detection of an unknown AML 2737 opcode. The AML parser has no real way to recover from this, and can 2738 result in the creation of an ill-formed parse tree that causes errors 2739 later during the disassembly. 2740 2741 All tools: Fixed a problem where the Unix application OSL did not handle 2742 control-c correctly. For example, a control-c could incorrectly wake the 2743 debugger. 2744 2745 AcpiExec: Improved the Control-C handling and added a handler for 2746 segmentation faults (SIGSEGV). Supports both Windows and Unix-like 2747 environments. 2748 2749 Reduced the verbosity of the generic unix makefiles. Previously, each 2750 compilation displayed the full set of compiler options. This has been 2751 eliminated as the options are easily inspected within the makefiles. Each 2752 compilation now results in a single line of output. 2753 2754 ---------------------------------------- 2755 03 March 2017. Summary of changes for version 20170303: 2756 2757 2758 0) ACPICA licensing: 2759 2760 The licensing information at the start of each source code module has 2761 been updated. In addition to the Intel license, the dual GPLv2/BSD 2762 license has been added for completeness. Now, a single version of the 2763 source code should be suitable for all ACPICA customers. This is the 2764 major change for this release since it affects all source code modules. 2765 2766 2767 1) ACPICA kernel-resident subsystem: 2768 2769 Fixed two issues with the common asltypes.h header that could cause 2770 problems in some environments: (Kim Jung-uk) 2771 Removed typedef for YY_BUFFER_STATE ? 2772 Fixes an error with earlier versions of Flex. 2773 Removed use of FILE typedef (which is only defined in stdio.h) 2774 2775 2776 2) iASL Compiler/Disassembler and Tools: 2777 2778 Disassembler: fixed a regression introduced in 20170224. A fix for a 2779 memory leak related to resource descriptor tags (names) could fault when 2780 the disassembler was generated with 64-bit compilers. 2781 2782 The ASLTS test suite has been updated to implement a new testing 2783 architecture. During generation of the suite from ASL source, both the 2784 ASL and ASL+ compilers are now validated, as well as the disassembler 2785 itself (Erik Schmauss). The architecture executes as follows: 2786 2787 For every ASL source module: 2788 Compile (legacy ASL compilation) 2789 Disassemble the resulting AML to ASL+ source code 2790 Compile the new ASL+ module 2791 Perform a binary compare on the legacy AML and the new ASL+ AML 2792 The ASLTS suite then executes normally using the AML binaries. 2793 2794 ---------------------------------------- 2795 24 February 2017. Summary of changes for version 20170224: 2796 2797 2798 1) ACPICA kernel-resident subsystem: 2799 2800 Interpreter: Fixed two issues with the control method return value auto- 2801 repair feature, where an attempt to double-delete an internal object 2802 could result in an ACPICA warning (for _CID repair and others). No fault 2803 occurs, however, because the attempted deletion (actually a release to an 2804 internal cache) is detected and ignored via object poisoning. 2805 2806 Debugger: Fixed an AML interpreter mutex issue during the single stepping 2807 of control methods. If certain debugger commands are executed during 2808 stepping, a mutex acquire/release error could occur. Lv Zheng. 2809 2810 Fixed some issues generating ACPICA with the Intel C compiler by 2811 restoring the original behavior and compiler-specific include file in 2812 acenv.h. Lv Zheng. 2813 2814 Example Code and Data Size: These are the sizes for the OS-independent 2815 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2816 debug version of the code includes the debug output trace mechanism and 2817 has a much larger code and data size. 2818 2819 Current Release: 2820 Non-Debug Version: 141.7K Code, 58.5K Data, 200.2K Total 2821 Debug Version: 207.5K Code, 82.7K Data, 290.2K Total 2822 Previous Release: 2823 Non-Debug Version: 137.4K Code, 52.6K Data, 190.0K Total 2824 Debug Version: 201.5K Code, 82.2K Data, 283.7K Total 2825 2826 2827 2) iASL Compiler/Disassembler and Tools: 2828 2829 iASL/Disassembler: A preliminary version of a new ASL-to-ASL+ conversion 2830 tool has been designed, implemented, and included in this release. The 2831 key feature of this utility is that the original comments within the 2832 input ASL file are preserved during the conversion process, and included 2833 within the converted ASL+ file -- thus creating a transparent conversion 2834 of existing ASL files to ASL+ (ASL 2.0). Erik Schmauss. 2835 2836 Usage: iasl -ca <ASL-filename> // Output is a .dsl file with 2837 converted code 2838 2839 iASL/Disassembler: Improved the detection and correct disassembly of 2840 Switch/Case operators. This feature detects sequences of if/elseif/else 2841 operators that originated from ASL Switch/Case/Default operators and 2842 emits the original operators. David Box. 2843 2844 iASL: Improved the IORT ACPI table support in the following areas. Lv 2845 Zheng: 2846 Clear MappingOffset if the MappingCount is zero. 2847 Fix the disassembly of the SMMU GSU interrupt offset. 2848 Update the template file for the IORT table. 2849 2850 Disassembler: Enhanced the detection and disassembly of resource 2851 template/descriptor within a Buffer object. An EndTag descriptor is now 2852 required to have a zero second byte, since all known ASL compilers emit 2853 this. This helps eliminate incorrect decisions when a buffer is 2854 disassembled (false positives on resource templates). 2855 2856 ---------------------------------------- 2857 19 January 2017. Summary of changes for version 20170119: 2858 2859 2860 1) General ACPICA software: 2861 2862 Entire source code base: Added the 2017 copyright to all source code 2863 legal/licensing module headers and utility/tool signons. This includes 2864 the standard Linux dual-license header. This affects virtually every file 2865 in the ACPICA core subsystem, iASL compiler, all ACPICA utilities, and 2866 the ACPICA test suite. 2867 2868 2869 2) iASL Compiler/Disassembler and Tools: 2870 2871 iASL: Removed/fixed an inadvertent remark when a method argument 2872 containing a reference is used as a target operand within the method (and 2873 never used as a simple argument), as in the example below. Jeffrey Hugo. 2874 2875 dsdt.asl 1507: Store(0x1, Arg0) 2876 Remark 2146 - ^ Method Argument is never used (Arg0) 2877 2878 All tools: Removed the bit width of the compiler that generated the tool 2879 from the common signon for all user space tools. This proved to be 2880 confusing and unnecessary. This includes similar removal of HARDWARE_NAME 2881 from the generic makefiles (Thomas Petazzoni). Example below. 2882 2883 Old: 2884 ASL+ Optimizing Compiler version 20170119-32 2885 ASL+ Optimizing Compiler version 20170119-64 2886 2887 New: 2888 ASL+ Optimizing Compiler version 20170119 2889 2890 ---------------------------------------- 2891 22 December 2016. Summary of changes for version 20161222: 2892 2893 2894 1) ACPICA kernel-resident subsystem: 2895 2896 AML Debugger: Implemented a new mechanism to simplify and enhance 2897 debugger integration into all environments, including kernel debuggers 2898 and user-space utilities, as well as remote debug services. This 2899 mechanism essentially consists of new OSL interfaces to support debugger 2900 initialization/termination, as well as wait/notify interfaces to perform 2901 the debugger handshake with the host. Lv Zheng. 2902 2903 New OSL interfaces: 2904 AcpiOsInitializeDebugger (void) 2905 AcpiOsTerminateDebugger (void) 2906 AcpiOsWaitCommandReady (void) 2907 AcpiOsNotifyCommandComplete (void) 2908 2909 New OS services layer: 2910 osgendbg.c -- Example implementation, and used for AcpiExec 2911 2912 Update for Generic Address Space (GAS) support: Although the AccessWidth 2913 and/or BitOffset fields of the GAS are not often used, this change now 2914 fully supports these fields. This affects the internal support for FADT 2915 registers, registers in other ACPI data tables, and the AcpiRead and 2916 AcpiWrite public interfaces. Lv Zheng. 2917 2918 Sleep support: In order to simplify integration of ACPI sleep for the 2919 various host operating systems, a new OSL interface has been introduced. 2920 AcpiOsEnterSleep allows the host to perform any required operations 2921 before the final write to the sleep control register(s) is performed by 2922 ACPICA. Lv Zheng. 2923 2924 New OSL interface: 2925 AcpiOsEnterSleep(SleepState, RegisterAValue, RegisterBValue) 2926 2927 Called from these internal interfaces: 2928 AcpiHwLegacySleep 2929 AcpiHwExtendedSleep 2930 2931 EFI support: Added a very small EFI/ACPICA example application. Provides 2932 a simple demo for EFI integration, as well as assisting with resolution 2933 of issues related to customer ACPICA/EFI integration. Lv Zheng. See: 2934 2935 source/tools/efihello/efihello.c 2936 2937 Local C library: Implemented several new functions to enhance ACPICA 2938 portability, for environments where these clib functions are not 2939 available (such as EFI). Lv Zheng: 2940 putchar 2941 getchar 2942 strpbrk 2943 strtok 2944 memmove 2945 2946 Fixed a regression where occasionally a valid resource descriptor was 2947 incorrectly detected as invalid at runtime, and a 2948 AE_AML_NO_RESOURCE_END_TAG was returned. 2949 2950 Fixed a problem with the recently implemented support that enables 2951 control method invocations as Target operands to many ASL operators. 2952 Warnings of this form: "Needed type [Reference], found [Processor]" were 2953 seen at runtime for some method invocations. 2954 2955 Example Code and Data Size: These are the sizes for the OS-independent 2956 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2957 debug version of the code includes the debug output trace mechanism and 2958 has a much larger code and data size. 2959 2960 Current Release: 2961 Non-Debug Version: 141.5K Code, 58.5K Data, 200.0K Total 2962 Debug Version: 201.7K Code, 82.7K Data, 284.4K Total 2963 Previous Release: 2964 Non-Debug Version: 140.5K Code, 58.5K Data, 198.9K Total 2965 Debug Version: 201.3K Code, 82.7K Data, 284.0K Total 2966 2967 2968 2) iASL Compiler/Disassembler and Tools: 2969 2970 Disassembler: Enhanced output by adding the capability to detect and 2971 disassemble ASL Switch/Case statements back to the original ASL source 2972 code instead of if/else blocks. David Box. 2973 2974 AcpiHelp: Split a large file into separate files based upon 2975 functionality/purpose. New files are: 2976 ahaml.c 2977 ahasl.c 2978 2979 ---------------------------------------- 2980 17 November 2016. Summary of changes for version 20161117: 2981 2982 2983 1) ACPICA kernel-resident subsystem: 2984 2985 Table Manager: Fixed a regression introduced in 20160729, "FADT support 2986 cleanup". This was an attempt to remove all references in the source to 2987 the FADT version 2, which never was a legal version number. It was 2988 skipped because it was an early version of 64-bit support that was 2989 eventually abandoned for the current 64-bit support. 2990 2991 Interpreter: Fixed a problem where runtime implicit conversion was 2992 incorrectly disabled for the ASL operators below. This brings the 2993 behavior into compliance with the ACPI specification: 2994 FromBCD 2995 ToBCD 2996 ToDecimalString 2997 ToHexString 2998 ToInteger 2999 ToBuffer 3000 3001 Table Manager: Added a new public interface, AcpiPutTable, used to 3002 release and free an ACPI table returned by AcpiGetTable and related 3003 interfaces. Lv Zheng. 3004 3005 Example Code and Data Size: These are the sizes for the OS-independent 3006 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3007 debug version of the code includes the debug output trace mechanism and 3008 has a much larger code and data size. 3009 3010 Current Release: 3011 Non-Debug Version: 140.5K Code, 58.5K Data, 198.9K Total 3012 Debug Version: 201.3K Code, 82.7K Data, 284.0K Total 3013 Previous Release: 3014 Non-Debug Version: 140.4K Code, 58.1K Data, 198.5K Total 3015 Debug Version: 200.7K Code, 82.1K Data, 282.8K Total 3016 3017 3018 2) iASL Compiler/Disassembler and Tools: 3019 3020 Disassembler: Fixed a regression for disassembly of Resource Template. 3021 Detection of templates in the AML stream missed some types of templates. 3022 3023 iASL: Fixed a problem where an Access Size error was returned for the PCC 3024 address space when the AccessSize of the GAS register is greater than a 3025 DWORD. Hoan Tran. 3026 3027 iASL: Implemented several grammar changes for the operators below. These 3028 changes are slated for the next version of the ACPI specification: 3029 RefOf - Disallow method invocation as an operand 3030 CondRefOf - Disallow method invocation as an operand 3031 DerefOf - Disallow operands that use the result from operators 3032 that 3033 do not return a reference (Changed TermArg to 3034 SuperName). 3035 3036 iASL: Control method invocations are now allowed for Target operands, as 3037 per the ACPI specification. Removed error for using a control method 3038 invocation as a Target operand. 3039 3040 Disassembler: Improved detection of Resource Templates, Unicode, and 3041 Strings within Buffer objects. These subtypes do not contain a specific 3042 opcode to indicate the originating ASL code, and they must be detected by 3043 other means within the disassembler. 3044 3045 iASL: Implemented an optimization improvement for 32-bit ACPI tables 3046 (DSDT/SSDT). For the 32-bit case only, compute the optimum integer opcode 3047 only after 64-bit to 32-bit truncation. A truncation warning message is 3048 still emitted, however. 3049 3050 AcpiXtract: Implemented handling for both types of line terminators (LF 3051 or CR/LF) so that it can accept AcpiDump output files from any system. 3052 Peter Wu. 3053 3054 AcpiBin: Added two new options for comparing AML files: 3055 -a: compare and display ALL mismatches 3056 -o: start compare at this offset into the second file 3057 3058 ---------------------------------------- 3059 30 September 2016. Summary of changes for version 20160930: 3060 3061 3062 1) ACPICA kernel-resident subsystem: 3063 3064 Fixed a regression in the internal AcpiTbFindTable function where a non 3065 AE_OK exception could inadvertently be returned even if the function did 3066 not fail. This problem affects the following operators: 3067 DataTableRegion 3068 LoadTable 3069 3070 Fixed a regression in the LoadTable operator where a load to any 3071 namespace location other than the root no longer worked properly. 3072 3073 Increased the maximum loop count value that will result in the 3074 AE_AML_INFINITE_LOOP exception. This is a mechanism that is intended to 3075 prevent infinite loops within the AML interpreter and thus the host OS 3076 kernel. The value is increased from 0xFFFF to 0xFFFFF loops (65,535 to 3077 1,048,575). 3078 3079 Moved the AcpiGbl_MaxLoopIterations configuration variable to the public 3080 acpixf.h file. This allows hosts to easily configure the maximum loop 3081 count at runtime. 3082 3083 Removed an illegal character in the strtoul64.c file. This character 3084 caused errors with some C compilers. 3085 3086 Example Code and Data Size: These are the sizes for the OS-independent 3087 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3088 debug version of the code includes the debug output trace mechanism and 3089 has a much larger code and data size. 3090 3091 Current Release: 3092 Non-Debug Version: 140.4K Code, 58.1K Data, 198.5K Total 3093 Debug Version: 200.7K Code, 82.1K Data, 282.8K Total 3094 Previous Release: 3095 Non-Debug Version: 140.0K Code, 58.1K Data, 198.1K Total 3096 Debug Version: 200.3K Code, 82.1K Data, 282.4K Total 3097 3098 3099 2) iASL Compiler/Disassembler and Tools: 3100 3101 Disassembler: Fixed a problem with the conversion of Else{If{ blocks into 3102 the simpler ASL ElseIf keyword. During the conversion, a trailing If 3103 block could be lost and missing from the disassembled output. 3104 3105 iASL: Fixed a missing parser rule for the ObjectType operator. For ASL+, 3106 the missing rule caused a parse error when using the Index operator as an 3107 operand to ObjectType. This construct now compiles properly. Example: 3108 ObjectType(PKG1[4]). 3109 3110 iASL: Correctly handle unresolved symbols in the hardware map file (-lm 3111 option). Previously, unresolved symbols could cause a protection fault. 3112 Such symbols are now marked as unresolved in the map file. 3113 3114 iASL: Implemented support to allow control method invocations as an 3115 operand to the ASL DeRefOf operator. Example: 3116 DeRefOf(MTH1(Local0)) 3117 3118 Disassembler: Improved support for the ToPLD ASL macro. Detection of a 3119 possible _PLD buffer now includes examination of both the normal buffer 3120 length (16 or 20) as well as the surrounding AML package length. 3121 3122 Disassembler: Fixed a problem with the decoding of complex expressions 3123 within the Divide operator for ASL+. For the case where both the quotient 3124 and remainder targets are specified, the entire statement cannot be 3125 disassembled. Previously, the output incorrectly contained a mix of ASL- 3126 and ASL+ operators. This mixed statement causes a syntax error when 3127 compiled. Example: 3128 Divide (Add (INT1, 6), 128, RSLT, QUOT) // was incorrectly 3129 disassembled to: 3130 Divide (INT1 + 6, 128, RSLT, QUOT) 3131 3132 iASL/Tools: Added support to process AML and non-AML ACPI tables 3133 consistently. For the disassembler and AcpiExec, allow all types of ACPI 3134 tables (AML and data tables). For the iASL -e option, allow only AML 3135 tables (DSDT/SSDT). 3136 3137 ---------------------------------------- 3138 31 August 2016. Summary of changes for version 20160831: 3139 3140 3141 1) ACPICA kernel-resident subsystem: 3142 3143 Improve support for the so-called "module-level code", which is defined 3144 to be math, logical and control AML opcodes that appear outside of any 3145 control method. This change improves the support by adding more opcodes 3146 that can be executed in the manner. Some other issues have been solved, 3147 and the ASL grammar changes to support such code under all scope 3148 operators (Device, etc.) are complete. Lv Zheng. 3149 3150 UEFI support: these OSL functions have been implemented. This is an 3151 additional step toward supporting the AcpiExec utility natively (with 3152 full hardware access) under UEFI. Marcelo Ferreira. 3153 AcpiOsReadPciConfiguration 3154 AcpiOsWritePciConfiguration 3155 3156 Fixed a possible mutex error during control method auto-serialization. Lv 3157 Zheng. 3158 3159 Updated support for the Generic Address Structure by fully implementing 3160 all GAS fields when a 32-bit address is expanded to a 64-bit GAS. Lv 3161 Zheng. 3162 3163 Updated the return value for the internal _OSI method. Instead of 3164 0xFFFFFFFF, the "Ones" value is now returned, which is 0xFFFFFFFFFFFFFFFF 3165 for 64-bit ACPI tables. This fixes an incompatibility with other ACPI 3166 implementations, and will be reflected and clarified in the next version 3167 of the ACPI specification. 3168 3169 Implemented two new table events that can be passed to an ACPICA table 3170 handler. These events are used to indicate a table installation or 3171 uninstallation. These events are used in addition to existed table load 3172 and unload events. Lv Zheng. 3173 3174 Implemented a cleanup for all internal string-to-integer conversions. 3175 Consolidate multiple versions of this functionality and limit possible 3176 bases to either 10 or 16 to simplify the code. Adds a new file, 3177 utstrtoul64. 3178 3179 Cleanup the inclusion order of the various compiler-specific headers. 3180 This simplifies build configuration management. The compiler-specific 3181 headers are now split out from the host-specific headers. Lv Zheng. 3182 3183 Example Code and Data Size: These are the sizes for the OS-independent 3184 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3185 debug version of the code includes the debug output trace mechanism and 3186 has a much larger code and data size. 3187 3188 Current Release: 3189 Non-Debug Version: 140.1K Code, 58.1K Data, 198.1K Total 3190 Debug Version: 200.3K Code, 82.1K Data, 282.4K Total 3191 3192 3193 2) iASL Compiler/Disassembler and Tools: 3194 3195 iASL/AcpiExec: Added a command line option to display the build date/time 3196 of the tool (-vd). This can be useful to verify that the correct version 3197 of the tools are being used. 3198 3199 AML Debugger: Implemented a new subcommand ("execute predef") to execute 3200 all predefined control methods and names within the current namespace. 3201 This can be useful for debugging problems with ACPI tables and the ACPI 3202 namespace. 3203 3204 ---------------------------------------- 3205 29 July 2016. Summary of changes for version 20160729: 3206 3207 3208 1) ACPICA kernel-resident subsystem: 3209 3210 Implemented basic UEFI support for the various ACPICA tools. This 3211 includes: 3212 1) An OSL to implement the various AcpiOs* interfaces on UEFI. 3213 2) Support to obtain the ACPI tables on UEFI. 3214 3) Local implementation of required C library functions not available on 3215 UEFI. 3216 4) A front-end (main) function for the tools for UEFI-related 3217 initialization. 3218 3219 The initial deployment of this support is the AcpiDump utility executing 3220 as an UEFI application via EDK2 (EDKII, "UEFI Firmware Development Kit"). 3221 Current environments supported are Linux/Unix. MSVC generation is not 3222 supported at this time. See the generate/efi/README file for build 3223 instructions. Lv Zheng. 3224 3225 Future plans include porting the AcpiExec utility to execute natively on 3226 the platform with I/O and memory access. This will allow viewing/dump of 3227 the platform namespace and native execution of ACPI control methods that 3228 access the actual hardware. To fully implement this support, the OSL 3229 functions below must be implemented with UEFI interfaces. Any community 3230 help in the implementation of these functions would be appreciated: 3231 AcpiOsReadPort 3232 AcpiOsWritePort 3233 AcpiOsReadMemory 3234 AcpiOsWriteMemory 3235 AcpiOsReadPciConfiguration 3236 AcpiOsWritePciConfiguration 3237 3238 Restructured and standardized the C library configuration for ACPICA, 3239 resulting in the various configuration options below. This includes a 3240 global restructuring of the compiler-dependent and platform-dependent 3241 include files. These changes may affect the existing platform-dependent 3242 configuration files on some hosts. Lv Zheng. 3243 3244 The current C library configuration options appear below. For any issues, 3245 it may be helpful to examine the existing compiler-dependent and 3246 platform-dependent files as examples. Lv Zheng. 3247 3248 1) Linux kernel: 3249 ACPI_USE_STANDARD_HEADERS=n in order not to use system-provided C 3250 library. 3251 ACPI_USE_SYSTEM_CLIBRARY=y in order not to use ACPICA mini C library. 3252 2) Unix/Windows/BSD applications: 3253 ACPI_USE_STANDARD_HEADERS=y in order to use system-provided C 3254 library. 3255 ACPI_USE_SYSTEM_CLIBRARY=y in order not to use ACPICA mini C library. 3256 3) UEFI applications: 3257 ACPI_USE_STANDARD_HEADERS=n in order not to use system-provided C 3258 library. 3259 ACPI_USE_SYSTEM_CLIBRARY=n in order to use ACPICA mini C library. 3260 4) UEFI applications (EDK2/StdLib): 3261 ACPI_USE_STANDARD_HEADERS=y in order to use EDK2 StdLib C library. 3262 ACPI_USE_SYSTEM_CLIBRARY=y in order to use EDK2 StdLib C library. 3263 3264 3265 AML interpreter: "module-level code" support. Allows for execution of so- 3266 called "executable" AML code (math/logical operations, etc.) outside of 3267 control methods not just at the module level (top level) but also within 3268 any scope declared outside of a control method - Scope{}, Device{}, 3269 Processor{}, PowerResource{}, and ThermalZone{}. Lv Zheng. 3270 3271 Simplified the configuration of the "maximum AML loops" global option by 3272 adding a global public variable, "AcpiGbl_MaxLoopIterations" which can be 3273 modified at runtime. 3274 3275 3276 Example Code and Data Size: These are the sizes for the OS-independent 3277 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3278 debug version of the code includes the debug output trace mechanism and 3279 has a much larger code and data size. 3280 3281 Current Release: 3282 Non-Debug Version: 139.1K Code, 22.9K Data, 162.0K Total 3283 Debug Version: 199.0K Code, 81.8K Data, 280.8K Total 3284 3285 3286 2) iASL Compiler/Disassembler and Tools: 3287 3288 iASL: Add full support for the RASF ACPI table (RAS Features Table). 3289 Includes disassembler, data table compiler, and header support. 3290 3291 iASL Expand "module-level code" support. Allows for 3292 compilation/disassembly of so-called "executable" AML code (math/logical 3293 operations, etc.) outside of control methods not just at the module level 3294 (top level) but also within any scope declared outside of a control 3295 method - Scope{}, Device{}, Processor{}, PowerResource{}, and 3296 ThermalZone{}. 3297 3298 AcpiDump: Added support for dumping all SSDTs on newer versions of 3299 Windows. These tables are now easily available -- SSDTs are not available 3300 through the registry on older versions. 3301 3302 ---------------------------------------- 3303 27 May 2016. Summary of changes for version 20160527: 3304 3305 3306 1) ACPICA kernel-resident subsystem: 3307 3308 Temporarily reverted the new arbitrary bit length/alignment support in 3309 AcpiHwRead/AcpiHwWrite for the Generic Address Structure. There have been 3310 a number of regressions with the new code that need to be fully resolved 3311 and tested before this support can be finally integrated into ACPICA. 3312 Apologies for any inconveniences these issues may have caused. 3313 3314 The ACPI message macros are not configurable (ACPI_MSG_ERROR, 3315 ACPI_MSG_EXCEPTION, ACPI_MSG_WARNING, ACPI_MSG_INFO, ACPI_MSG_BIOS_ERROR, 3316 and ACPI_MSG_BIOS_WARNING). Lv Zheng. 3317 3318 Fixed a couple of GCC warnings associated with the use of the -Wcast-qual 3319 option. Adds a new return macro, return_STR. Junk-uk Kim. 3320 3321 Example Code and Data Size: These are the sizes for the OS-independent 3322 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3323 debug version of the code includes the debug output trace mechanism and 3324 has a much larger code and data size. 3325 3326 Current Release: 3327 Non-Debug Version: 136.8K Code, 51.6K Data, 188.4K Total 3328 Debug Version: 201.5K Code, 82.2K Data, 283.7K Total 3329 Previous Release: 3330 Non-Debug Version: 137.4K Code, 52.6K Data, 190.0K Total 3331 Debug Version: 200.9K Code, 82.2K Data, 283.1K Total 3332 3333 ---------------------------------------- 3334 22 April 2016. Summary of changes for version 20160422: 3335 3336 1) ACPICA kernel-resident subsystem: 3337 3338 Fixed a regression in the GAS (generic address structure) arbitrary bit 3339 support in AcpiHwRead/AcpiHwWrite. Problem could cause incorrect behavior 3340 and incorrect return values. Lv Zheng. ACPICA BZ 1270. 3341 3342 ACPI 6.0: Added support for new/renamed resource macros. One new argument 3343 was added to each of these macros, and the original name has been 3344 deprecated. The AML disassembler will always disassemble to the new 3345 names. Support for the new macros was added to iASL, disassembler, 3346 resource manager, and the acpihelp utility. ACPICA BZ 1274. 3347 3348 I2cSerialBus -> I2cSerialBusV2 3349 SpiSerialBus -> SpiSerialBusV2 3350 UartSerialBus -> UartSerialBusV2 3351 3352 ACPI 6.0: Added support for a new integer field that was appended to the 3353 package object returned by the _BIX method. This adds iASL compile-time 3354 and AML runtime error checking. ACPICA BZ 1273. 3355 3356 ACPI 6.1: Added support for a new PCCT subtable, "HW-Reduced Comm 3357 Subspace Type2" (Headers, Disassembler, and data table compiler). 3358 3359 Example Code and Data Size: These are the sizes for the OS-independent 3360 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3361 debug version of the code includes the debug output trace mechanism and 3362 has a much larger code and data size. 3363 3364 Current Release: 3365 Non-Debug Version: 137.4K Code, 52.6K Data, 190.0K Total 3366 Debug Version: 201.5K Code, 82.2K Data, 283.7K Total 3367 Previous Release: 3368 Non-Debug Version: 137.1K Code, 51.5K Data, 188.6K Total 3369 Debug Version: 201.0K Code, 82.0K Data, 283.0K Total 3370 3371 3372 2) iASL Compiler/Disassembler and Tools: 3373 3374 iASL: Implemented an ASL grammar extension to allow/enable executable 3375 "module-level code" to be created and executed under the various 3376 operators that create new scopes. This type of AML code is already 3377 supported in all known AML interpreters, and the grammar change will 3378 appear in the next version of the ACPI specification. Simplifies the 3379 conditional runtime creation of named objects under these object types: 3380 3381 Device 3382 PowerResource 3383 Processor 3384 Scope 3385 ThermalZone 3386 3387 iASL: Implemented a new ASL extension, a "For" loop macro to add greater 3388 ease-of-use to the ASL language. The syntax is similar to the 3389 corresponding C operator, and is implemented with the existing AML While 3390 opcode -- thus requiring no changes to existing AML interpreters. 3391 3392 For (Initialize, Predicate, Update) {TermList} 3393 3394 Grammar: 3395 ForTerm := 3396 For ( 3397 Initializer // Nothing | TermArg => ComputationalData 3398 Predicate // Nothing | TermArg => ComputationalData 3399 Update // Nothing | TermArg => ComputationalData 3400 ) {TermList} 3401 3402 3403 iASL: The _HID/_ADR detection and validation has been enhanced to search 3404 under conditionals in order to allow these objects to be conditionally 3405 created at runtime. 3406 3407 iASL: Fixed several issues with the constant folding feature. The 3408 improvement allows better detection and resolution of statements that can 3409 be folded at compile time. ACPICA BZ 1266. 3410 3411 iASL/Disassembler: Fixed a couple issues with the Else{If{}...} 3412 conversion to the ASL ElseIf operator where incorrect ASL code could be 3413 generated. 3414 3415 iASL/Disassembler: Fixed a problem with the ASL+ code disassembly where 3416 sometimes an extra (and extraneous) set of parentheses were emitted for 3417 some combinations of operators. Although this did not cause any problems 3418 with recompilation of the disassembled code, it made the code more 3419 difficult to read. David Box. ACPICA BZ 1231. 3420 3421 iASL: Changed to ignore the unreferenced detection for predefined names 3422 of resource descriptor elements, when the resource descriptor is 3423 created/defined within a control method. 3424 3425 iASL: Disassembler: Fix a possible fault with externally declared Buffer 3426 objects. 3427 3428 ---------------------------------------- 3429 18 March 2016. Summary of changes for version 20160318: 3430 3431 1) ACPICA kernel-resident subsystem: 3432 3433 Added support for arbitrary bit lengths and bit offsets for registers 3434 defined by the Generic Address Structure. Previously, only aligned bit 3435 lengths of 8/16/32/64 were supported. This was sufficient for many years, 3436 but recently some machines have been seen that require arbitrary bit- 3437 level support. ACPICA BZ 1240. Lv Zheng. 3438 3439 Fixed an issue where the \_SB._INI method sometimes must be evaluated 3440 before any _REG methods are evaluated. Lv Zheng. 3441 3442 Implemented several changes related to ACPI table support 3443 (Headers/Disassembler/TableCompiler): 3444 NFIT: For ACPI 6.1, updated to add some additional new fields and 3445 constants. 3446 FADT: Updated a warning message and set compliance to ACPI 6.1 (Version 3447 6). 3448 DMAR: Added new constants per the 10/2014 DMAR spec. 3449 IORT: Added new subtable per the 10/2015 IORT spec. 3450 HEST: For ACPI 6.1, added new constants and new subtable. 3451 DBG2: Added new constants per the 12/2015 DBG2 spec. 3452 FPDT: Fixed several incorrect fields, add the FPDT boot record structure. 3453 ACPICA BZ 1249. 3454 ERST/EINJ: Updated disassembler with new "Execute Timings" actions. 3455 3456 Updated header support for the DMAR table to match the current version of 3457 the related spec. 3458 3459 Added extensions to the ASL Concatenate operator to allow any ACPI object 3460 to be passed as an operand. Any object other than Integer/String/Buffer 3461 simply returns a string containing the object type. This extends the 3462 usefulness of the Printf macros. Previously, Concatenate would abort the 3463 control method if a non-data object was encountered. 3464 3465 ACPICA source code: Deployed the C "const" keyword across the source code 3466 where appropriate. ACPICA BZ 732. Joerg Sonnenberger (NetBSD). 3467 3468 Example Code and Data Size: These are the sizes for the OS-independent 3469 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3470 debug version of the code includes the debug output trace mechanism and 3471 has a much larger code and data size. 3472 3473 Current Release: 3474 Non-Debug Version: 137.1K Code, 51.5K Data, 188.6K Total 3475 Debug Version: 201.0K Code, 82.0K Data, 283.0K Total 3476 Previous Release: 3477 Non-Debug Version: 136.2K Code, 51.5K Data, 187.7K Total 3478 Debug Version: 200.4K Code, 82.0K Data, 282.4K Total 3479 3480 3481 2) iASL Compiler/Disassembler and Tools: 3482 3483 iASL/Disassembler: Improved the heuristic used to determine the number of 3484 arguments for an externally defined control method (a method in another 3485 table). Although this is an improvement, there is no deterministic way to 3486 "guess" the number of method arguments. Only the ACPI 6.0 External opcode 3487 will completely solve this problem as it is deployed (automatically) in 3488 newer BIOS code. 3489 3490 iASL/Disassembler: Fixed an ordering issue for emitted External() ASL 3491 statements that could cause errors when the disassembled file is 3492 compiled. ACPICA BZ 1243. David Box. 3493 3494 iASL: Fixed a regression caused by the merger of the two versions of the 3495 local strtoul64. Because of a dependency on a global variable, strtoul64 3496 could return an error for integers greater than a 32-bit value. ACPICA BZ 3497 1260. 3498 3499 iASL: Fixed a regression where a fault could occur for an ASL Return 3500 statement if it invokes a control method that is not resolved. ACPICA BZ 3501 1264. 3502 3503 AcpiXtract: Improved input file validation: detection of binary files and 3504 non-acpidump text files. 3505 3506 ---------------------------------------- 3507 12 February 2016. Summary of changes for version 20160212: 3508 3509 1) ACPICA kernel-resident subsystem: 3510 3511 Implemented full support for the ACPI 6.1 specification (released in 3512 January). This version of the specification is available at: 3513 http://www.uefi.org/specifications 3514 3515 Only a relatively small number of changes were required in ACPICA to 3516 support ACPI 6.1, in these areas: 3517 - New predefined names 3518 - New _HID values 3519 - A new subtable for HEST 3520 - A few other header changes for new values 3521 3522 Ensure \_SB_._INI is executed before any _REG methods are executed. There 3523 appears to be existing BIOS code that relies on this behavior. Lv Zheng. 3524 3525 Reverted a change made in version 20151218 which enabled method 3526 invocations to be targets of various ASL operators (SuperName and Target 3527 grammar elements). While the new behavior is supported by the ACPI 3528 specification, other AML interpreters do not support this behavior and 3529 never will. The ACPI specification will be updated for ACPI 6.2 to remove 3530 this support. Therefore, the change was reverted to the original ACPICA 3531 behavior. 3532 3533 ACPICA now supports the GCC 6 compiler. 3534 3535 Current Release: (Note: build changes increased sizes) 3536 Non-Debug Version: 136.2K Code, 51.5K Data, 187.7K Total 3537 Debug Version: 200.4K Code, 82.0K Data, 282.4K Total 3538 Previous Release: 3539 Non-Debug Version: 102.7K Code, 28.4K Data, 131.1K Total 3540 Debug Version: 200.4K Code, 81.9K Data, 282.3K Total 3541 3542 3543 2) iASL Compiler/Disassembler and Tools: 3544 3545 Completed full support for the ACPI 6.0 External() AML opcode. The 3546 compiler emits an external AML opcode for each ASL External statement. 3547 This opcode is used by the disassembler to assist with the disassembly of 3548 external control methods by specifying the required number of arguments 3549 for the method. AML interpreters do not use this opcode. To ensure that 3550 interpreters do not even see the opcode, a block of one or more external 3551 opcodes is surrounded by an "If(0)" construct. As this feature becomes 3552 commonly deployed in BIOS code, the ability of disassemblers to correctly 3553 disassemble AML code will be greatly improved. David Box. 3554 3555 iASL: Implemented support for an optional cross-reference output file. 3556 The -lx option will create a the cross-reference file with the suffix 3557 "xrf". Three different types of cross-reference are created in this file: 3558 - List of object references made from within each control method 3559 - Invocation (caller) list for each user-defined control method 3560 - List of references to each non-method object in the namespace 3561 3562 iASL: Method invocations as ASL Target operands are now disallowed and 3563 flagged as errors in preparation for ACPI 6.2 (see the description of the 3564 problem above). 3565 3566 ---------------------------------------- 3567 8 January 2016. Summary of changes for version 20160108: 3568 3569 1) ACPICA kernel-resident subsystem: 3570 3571 Updated all ACPICA copyrights and signons to 2016: Added the 2016 3572 copyright to all source code module headers and utility/tool signons. 3573 This includes the standard Linux dual-license header. This affects 3574 virtually every file in the ACPICA core subsystem, iASL compiler, all 3575 ACPICA utilities, and the ACPICA test suite. 3576 3577 Fixed a regression introduced in version 20151218 concerning the 3578 execution of so-called module-level ASL/AML code. Namespace objects 3579 created under a module-level If() construct were not properly/fully 3580 entered into the namespace and could cause an interpreter fault when 3581 accessed. 3582 3583 Example Code and Data Size: These are the sizes for the OS-independent 3584 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3585 debug version of the code includes the debug output trace mechanism and 3586 has a much larger code and data size. 3587 3588 Current Release: 3589 Non-Debug Version: 102.7K Code, 28.4K Data, 131.1K Total 3590 Debug Version: 200.4K Code, 81.9K Data, 282.4K Total 3591 Previous Release: 3592 Non-Debug Version: 102.6K Code, 28.4K Data, 131.0K Total 3593 Debug Version: 200.3K Code, 81.9K Data, 282.3K Total 3594 3595 3596 2) iASL Compiler/Disassembler and Tools: 3597 3598 Fixed a problem with the compilation of the GpioIo and GpioInt resource 3599 descriptors. The _PIN field name was incorrectly defined to be an array 3600 of 32-bit values, but the _PIN values are in fact 16 bits each. This 3601 would cause incorrect bit width warnings when using Word (16-bit) fields 3602 to access the descriptors. 3603 3604 3605 ---------------------------------------- 3606 18 December 2015. Summary of changes for version 20151218: 3607 3608 1) ACPICA kernel-resident subsystem: 3609 3610 Implemented per-AML-table execution of "module-level code" as individual 3611 ACPI tables are loaded into the namespace during ACPICA initialization. 3612 In other words, any module-level code within an AML table is executed 3613 immediately after the table is loaded, instead of batched and executed 3614 after all of the tables have been loaded. This provides compatibility 3615 with other ACPI implementations. ACPICA BZ 1219. Bob Moore, Lv Zheng, 3616 David Box. 3617 3618 To fully support the feature above, the default operation region handlers 3619 for the SystemMemory, SystemIO, and PCI_Config address spaces are now 3620 installed before any ACPI tables are loaded. This enables module-level 3621 code to access these address spaces during the table load and module- 3622 level code execution phase. ACPICA BZ 1220. Bob Moore, Lv Zheng, David 3623 Box. 3624 3625 Implemented several changes to the internal _REG support in conjunction 3626 with the changes above. Also, changes to the AcpiExec/AcpiNames/Examples 3627 utilities for the changes above. Although these tools were changed, host 3628 operating systems that simply use the default handlers for SystemMemory, 3629 SystemIO, and PCI_Config spaces should not require any update. Lv Zheng. 3630 3631 For example, in the code below, DEV1 is conditionally added to the 3632 namespace by the DSDT via module-level code that accesses an operation 3633 region. The SSDT references DEV1 via the Scope operator. DEV1 must be 3634 created immediately after the DSDT is loaded in order for the SSDT to 3635 successfully reference DEV1. Previously, this code would cause an 3636 AE_NOT_EXIST exception during the load of the SSDT. Now, this code is 3637 fully supported by ACPICA. 3638 3639 DefinitionBlock ("", "DSDT", 2, "Intel", "DSDT1", 1) 3640 { 3641 OperationRegion (OPR1, SystemMemory, 0x400, 32) 3642 Field (OPR1, AnyAcc, NoLock, Preserve) 3643 { 3644 FLD1, 1 3645 } 3646 If (FLD1) 3647 { 3648 Device (\DEV1) 3649 { 3650 } 3651 } 3652 } 3653 DefinitionBlock ("", "SSDT", 2, "Intel", "SSDT1", 1) 3654 { 3655 External (\DEV1, DeviceObj) 3656 Scope (\DEV1) 3657 { 3658 } 3659 } 3660 3661 Fixed an AML interpreter problem where control method invocations were 3662 not handled correctly when the invocation was itself a SuperName argument 3663 to another ASL operator. In these cases, the method was not invoked. 3664 ACPICA BZ 1002. Affects the following ASL operators that have a SuperName 3665 argument: 3666 Store 3667 Acquire, Wait 3668 CondRefOf, RefOf 3669 Decrement, Increment 3670 Load, Unload 3671 Notify 3672 Signal, Release, Reset 3673 SizeOf 3674 3675 Implemented automatic String-to-ObjectReference conversion support for 3676 packages returned by predefined names (such as _DEP). A common BIOS error 3677 is to add double quotes around an ObjectReference namepath, which turns 3678 the reference into an unexpected string object. This support detects the 3679 problem and corrects it before the package is returned to the caller that 3680 invoked the method. Lv Zheng. 3681 3682 Implemented extensions to the Concatenate operator. Concatenate now 3683 accepts any type of object, it is not restricted to simply 3684 Integer/String/Buffer. For objects other than these 3 basic data types, 3685 the argument is treated as a string containing the name of the object 3686 type. This expands the utility of Concatenate and the Printf/Fprintf 3687 macros. ACPICA BZ 1222. 3688 3689 Cleaned up the output of the ASL Debug object. The timer() value is now 3690 optional and no longer emitted by default. Also, the basic data types of 3691 Integer/String/Buffer are simply emitted as their values, without a data 3692 type string -- since the data type is obvious from the output. ACPICA BZ 3693 1221. 3694 3695 Example Code and Data Size: These are the sizes for the OS-independent 3696 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3697 debug version of the code includes the debug output trace mechanism and 3698 has a much larger code and data size. 3699 3700 Current Release: 3701 Non-Debug Version: 102.6K Code, 28.4K Data, 131.0K Total 3702 Debug Version: 200.3K Code, 81.9K Data, 282.3K Total 3703 Previous Release: 3704 Non-Debug Version: 102.0K Code, 28.3K Data, 130.3K Total 3705 Debug Version: 199.6K Code, 81.8K Data, 281.4K Total 3706 3707 3708 2) iASL Compiler/Disassembler and Tools: 3709 3710 iASL: Fixed some issues with the ASL Include() operator. This operator 3711 was incorrectly defined in the iASL parser rules, causing a new scope to 3712 be opened for the code within the include file. This could lead to 3713 several issues, including allowing ASL code that is technically illegal 3714 and not supported by AML interpreters. Note, this does not affect the 3715 related #include preprocessor operator. ACPICA BZ 1212. 3716 3717 iASL/Disassembler: Implemented support for the ASL ElseIf operator. This 3718 operator is essentially an ASL macro since there is no AML opcode 3719 associated with it. The code emitted by the iASL compiler for ElseIf is 3720 an Else opcode followed immediately by an If opcode. The disassembler 3721 will now emit an ElseIf if it finds an Else immediately followed by an 3722 If. This simplifies the decoded ASL, especially for deeply nested 3723 If..Else and large Switch constructs. Thus, the disassembled code more 3724 closely follows the original source ASL. ACPICA BZ 1211. Example: 3725 3726 Old disassembly: 3727 Else 3728 { 3729 If (Arg0 == 0x02) 3730 { 3731 Local0 = 0x05 3732 } 3733 } 3734 3735 New disassembly: 3736 ElseIf (Arg0 == 0x02) 3737 { 3738 Local0 = 0x05 3739 } 3740 3741 AcpiExec: Added support for the new module level code behavior and the 3742 early region installation. This required a small change to the 3743 initialization, since AcpiExec must install its own operation region 3744 handlers. 3745 3746 AcpiExec: Added support to make the debug object timer optional. Default 3747 is timer disabled. This cleans up the debug object output -- the timer 3748 data is rarely used. 3749 3750 AcpiExec: Multiple ACPI tables are now loaded in the order that they 3751 appear on the command line. This can be important when there are 3752 interdependencies/references between the tables. 3753 3754 iASL/Templates. Add support to generate template files with multiple 3755 SSDTs within a single output file. Also added ommand line support to 3756 specify the number of SSDTs (in addition to a single DSDT). ACPICA BZ 3757 1223, 1225. 3758 3759 3760 ---------------------------------------- 3761 24 November 2015. Summary of changes for version 20151124: 3762 3763 1) ACPICA kernel-resident subsystem: 3764 3765 Fixed a possible regression for a previous update to FADT handling. The 3766 FADT no longer has a fixed table ID, causing some issues with code that 3767 was hardwired to a specific ID. Lv Zheng. 3768 3769 Fixed a problem where the method auto-serialization could interfere with 3770 the current SyncLevel. This change makes the auto-serialization support 3771 transparent to the SyncLevel support and management. 3772 3773 Removed support for the _SUB predefined name in AcpiGetObjectInfo. This 3774 interface is intended for early access to the namespace during the 3775 initial namespace device discovery walk. The _SUB method has been seen to 3776 access operation regions in some cases, causing errors because the 3777 operation regions are not fully initialized. 3778 3779 AML Debugger: Fixed some issues with the terminate/quit/exit commands 3780 that can cause faults. Lv Zheng. 3781 3782 AML Debugger: Add thread ID support so that single-step mode only applies 3783 to the AML Debugger thread. This prevents runtime errors within some 3784 kernels. Lv Zheng. 3785 3786 Eliminated extraneous warnings from AcpiGetSleepTypeData. Since the _Sx 3787 methods that are invoked by this interface are optional, removed warnings 3788 emitted for the case where one or more of these methods do not exist. 3789 ACPICA BZ 1208, original change by Prarit Bhargava. 3790 3791 Made a major pass through the entire ACPICA source code base to 3792 standardize formatting that has diverged a bit over time. There are no 3793 functional changes, but this will of course cause quite a few code 3794 differences from the previous ACPICA release. 3795 3796 Example Code and Data Size: These are the sizes for the OS-independent 3797 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3798 debug version of the code includes the debug output trace mechanism and 3799 has a much larger code and data size. 3800 3801 Current Release: 3802 Non-Debug Version: 102.0K Code, 28.3K Data, 130.3K Total 3803 Debug Version: 199.6K Code, 81.8K Data, 281.4K Total 3804 Previous Release: 3805 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total 3806 Debug Version: 199.3K Code, 81.4K Data, 280.7K Total 3807 3808 3809 2) iASL Compiler/Disassembler and Tools: 3810 3811 iASL/acpiexec/acpixtract/disassembler: Added support to allow multiple 3812 definition blocks within a single ASL file and the resulting AML file. 3813 Support for this type of file was also added to the various tools that 3814 use binary AML files: acpiexec, acpixtract, and the AML disassembler. The 3815 example code below shows two definition blocks within the same file: 3816 3817 DefinitionBlock ("dsdt.aml", "DSDT", 2, "Intel", "Template", 3818 0x12345678) 3819 { 3820 } 3821 DefinitionBlock ("", "SSDT", 2, "Intel", "Template", 0xABCDEF01) 3822 { 3823 } 3824 3825 iASL: Enhanced typechecking for the Name() operator. All expressions for 3826 the value of the named object must be reduced/folded to a single constant 3827 at compile time, as per the ACPI specification (the AML definition of 3828 Name()). 3829 3830 iASL: Fixed some code indentation issues for the -ic and -ia options (C 3831 and assembly headers). Now all emitted code correctly begins in column 1. 3832 3833 iASL: Added an error message for an attempt to open a Scope() on an 3834 object defined in an SSDT. The DSDT is always loaded into the namespace 3835 first, so any attempt to open a Scope on an SSDT object will fail at 3836 runtime. 3837 3838 3839 ---------------------------------------- 3840 30 September 2015. Summary of changes for version 20150930: 3841 3842 1) ACPICA kernel-resident subsystem: 3843 3844 Debugger: Implemented several changes and bug fixes to assist support for 3845 the in-kernel version of the AML debugger. Lv Zheng. 3846 - Fix the "predefined" command for in-kernel debugger. 3847 - Do not enter debug command loop for the help and version commands. 3848 - Disallow "execute" command during execution/single-step of a method. 3849 3850 Interpreter: Updated runtime typechecking for all operators that have 3851 target operands. The operand is resolved and validated that it is legal. 3852 For example, the target cannot be a non-data object such as a Device, 3853 Mutex, ThermalZone, etc., as per the ACPI specification. 3854 3855 Debugger: Fixed the double-mutex user I/O handshake to work when local 3856 deadlock detection is enabled. 3857 3858 Debugger: limited display of method locals and arguments (LocalX and 3859 ArgX) to only those that have actually been initialized. This prevents 3860 lines of extraneous output. 3861 3862 Updated the definition of the NFIT table to correct the bit polarity of 3863 one flag: ACPI_NFIT_MEM_ARMED --> ACPI_NFIT_MEM_NOT_ARMED 3864 3865 Example Code and Data Size: These are the sizes for the OS-independent 3866 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3867 debug version of the code includes the debug output trace mechanism and 3868 has a much larger code and data size. 3869 3870 Current Release: 3871 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total 3872 Debug Version: 199.3K Code, 81.4K Data, 280.7K Total 3873 Previous Release: 3874 Non-Debug Version: 101.3K Code, 27.7K Data, 129.0K Total 3875 Debug Version: 198.6K Code, 80.9K Data, 279.5K Total 3876 3877 3878 2) iASL Compiler/Disassembler and Tools: 3879 3880 iASL: Improved the compile-time typechecking for operands of many of the 3881 ASL operators: 3882 3883 -- Added an option to disable compiler operand/operator typechecking (- 3884 ot). 3885 3886 -- For the following operators, the TermArg operands are now validated 3887 when possible to be Integer data objects: BankField, OperationRegion, 3888 DataTableRegion, Buffer, and Package. 3889 3890 -- Store (Source, Target): Both the source and target operands are 3891 resolved and checked that the operands are both legal. For example, 3892 neither operand can be a non-data object such as a Device, Mutex, 3893 ThermalZone, etc. Note, as per the ACPI specification, the CopyObject 3894 operator can be used to store an object to any type of target object. 3895 3896 -- Store (Source, Target): If the source is a Package object, the target 3897 must be a Package object, LocalX, ArgX, or Debug. Likewise, if the target 3898 is a Package, the source must also be a Package. 3899 3900 -- Store (Source, Target): A warning is issued if the source and target 3901 resolve to the identical named object. 3902 3903 -- Store (Source, <method invocation>): An error is generated for the 3904 target method invocation, as this construct is not supported by the AML 3905 interpreter. 3906 3907 -- For all ASL math and logic operators, the target operand must be a 3908 data object (Integer, String, Buffer, LocalX, ArgX, or Debug). This 3909 includes the function return value also. 3910 3911 -- External declarations are also included in the typechecking where 3912 possible. External objects defined using the UnknownObj keyword cannot be 3913 typechecked, however. 3914 3915 iASL and Disassembler: Added symbolic (ASL+) support for the ASL Index 3916 operator: 3917 - Legacy code: Index(PKG1, 3) 3918 - New ASL+ code: PKG1[3] 3919 This completes the ACPI 6.0 ASL+ support as it was the only operator not 3920 supported. 3921 3922 iASL: Fixed the file suffix for the preprocessor output file (.i). Two 3923 spaces were inadvertently appended to the filename, causing file access 3924 and deletion problems on some systems. 3925 3926 ASL Test Suite (ASLTS): Updated the master makefile to generate all 3927 possible compiler output files when building the test suite -- thus 3928 exercising these features of the compiler. These files are automatically 3929 deleted when the test suite exits. 3930 3931 3932 ---------------------------------------- 3933 18 August 2015. Summary of changes for version 20150818: 3934 3935 1) ACPICA kernel-resident subsystem: 3936 3937 Fix a regression for AcpiGetTableByIndex interface causing it to fail. Lv 3938 Zheng. ACPICA BZ 1186. 3939 3940 Completed development to ensure that the ACPICA Disassembler and Debugger 3941 are fully standalone components of ACPICA. Removed cross-component 3942 dependences. Lv Zheng. 3943 3944 The max-number-of-AML-loops is now runtime configurable (previously was 3945 compile-time only). This is essentially a loop timeout to force-abort 3946 infinite AML loops. ACPCIA BZ 1192. 3947 3948 Debugger: Cleanup output to dump ACPI names and namepaths without any 3949 trailing underscores. Lv Zheng. ACPICA BZ 1135. 3950 3951 Removed unnecessary conditional compilations across the Debugger and 3952 Disassembler components where entire modules could be left uncompiled. 3953 3954 The aapits test is deprecated and has been removed from the ACPICA git 3955 tree. The test has never been completed and has not been maintained, thus 3956 becoming rather useless. ACPICA BZ 1015, 794. 3957 3958 A batch of small changes to close bugzilla and other reports: 3959 - Remove duplicate code for _PLD processing. ACPICA BZ 1176. 3960 - Correctly cleanup after a ACPI table load failure. ACPICA BZ 1185. 3961 - iASL: Support POSIX yacc again in makefile. Jung-uk Kim. 3962 - ACPI table support: general cleanup and simplification. Lv Zheng, Bob 3963 Moore. 3964 - ACPI table support: fix for a buffer read overrun in AcpiTbFindTable. 3965 ACPICA BZ 1184. 3966 - Enhance parameter validation for DataTableRegion and LoadTable ASL/AML 3967 operators. 3968 - Debugger: Split debugger initialization/termination interfaces. Lv 3969 Zheng. 3970 - AcpiExec: Emit OemTableId for SSDTs during the load phase for table 3971 identification. 3972 - AcpiExec: Add debug message during _REG method phase during table 3973 load/init. 3974 - AcpiNames: Fix a regression where some output was missing and no longer 3975 emitted. 3976 - Debugger: General cleanup and simplification. Lv Zheng. 3977 - Disassembler: Cleanup use of several global option variables. Lv Zheng. 3978 3979 Example Code and Data Size: These are the sizes for the OS-independent 3980 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3981 debug version of the code includes the debug output trace mechanism and 3982 has a much larger code and data size. 3983 3984 Current Release: 3985 Non-Debug Version: 101.3K Code, 27.7K Data, 129.0K Total 3986 Debug Version: 198.6K Code, 80.9K Data, 279.5K Total 3987 Previous Release: 3988 Non-Debug Version: 100.9K Code, 24.5K Data, 125.4K Total 3989 Debug Version: 197.8K Code, 81.5K Data, 279.3K Total 3990 3991 3992 2) iASL Compiler/Disassembler and Tools: 3993 3994 AcpiExec: Fixed a problem where any more than 32 ACPI tables in the XSDT 3995 were not handled properly and caused load errors. Now, properly invoke 3996 and use the ACPICA auto-reallocate mechanism for ACPI table data 3997 structures. ACPICA BZ 1188 3998 3999 AcpiNames: Add command-line wildcard support for ACPI table files. ACPICA 4000 BZ 1190. 4001 4002 AcpiExec and AcpiNames: Add -l option to load ACPI tables only. For 4003 AcpiExec, this means that no control methods (like _REG/_INI/_STA) are 4004 executed during initialization. ACPICA BZ 1187, 1189. 4005 4006 iASL/Disassembler: Implemented a prototype "listing" mode that emits AML 4007 that corresponds to each disassembled ASL statement, to simplify 4008 debugging. ACPICA BZ 1191. 4009 4010 Debugger: Add option to the "objects" command to display a summary of the 4011 current namespace objects (Object type and count). This is displayed if 4012 the command is entered with no arguments. 4013 4014 AcpiNames: Add -x option to specify debug level, similar to AcpiExec. 4015 4016 4017 ---------------------------------------- 4018 17 July 2015. Summary of changes for version 20150717: 4019 4020 1) ACPICA kernel-resident subsystem: 4021 4022 Improved the partitioning between the Debugger and Disassembler 4023 components. This allows the Debugger to be used standalone within kernel 4024 code without the Disassembler (which is used for single stepping also). 4025 This renames and moves one file, dmobject.c to dbobject.c. Lv Zheng. 4026 4027 Debugger: Implemented a new command to trace the execution of control 4028 methods (Trace). This is especially useful for the in-kernel version of 4029 the debugger when file I/O may not be available for method trace output. 4030 See the ACPICA reference for more information. Lv Zheng. 4031 4032 Moved all C library prototypes (used for the local versions of these 4033 functions when requested) to a new header, acclib.h 4034 Cleaned up the use of non-ANSI C library functions. These functions are 4035 implemented locally in ACPICA. Moved all such functions to a common 4036 source file, utnonansi.c 4037 4038 Debugger: Fixed a problem with the "!!" command (get last command 4039 executed) where the debugger could enter an infinite loop and eventually 4040 crash. 4041 4042 Removed the use of local macros that were used for some of the standard C 4043 library functions to automatically cast input parameters. This mostly 4044 affected the is* functions where the input parameter is defined to be an 4045 int. This required a few modifications to the main ACPICA source code to 4046 provide casting for these functions and eliminate possible compiler 4047 warnings for these parameters. 4048 4049 Across the source code, added additional status/error checking to resolve 4050 issues discovered by static source code analysis tools such as Coverity. 4051 4052 Example Code and Data Size: These are the sizes for the OS-independent 4053 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4054 debug version of the code includes the debug output trace mechanism and 4055 has a much larger code and data size. 4056 4057 Current Release: 4058 Non-Debug Version: 100.9K Code, 24.5K Data, 125.4K Total 4059 Debug Version: 197.8K Code, 81.5K Data, 279.3K Total 4060 Previous Release: 4061 Non-Debug Version: 100.6K Code, 27.6K Data, 128.2K Total 4062 Debug Version: 196.2K Code, 81.0K Data, 277.2K Total 4063 4064 4065 2) iASL Compiler/Disassembler and Tools: 4066 4067 iASL: Fixed a regression where the device map file feature no longer 4068 worked properly when used in conjunction with the disassembler. It only 4069 worked properly with the compiler itself. 4070 4071 iASL: Implemented a new warning for method LocalX variables that are set 4072 but never used (similar to a C compiler such as gcc). This also applies 4073 to ArgX variables that are not defined by the parent method, and are 4074 instead (legally) used as local variables. 4075 4076 iASL/Preprocessor: Finished the pass-through of line numbers from the 4077 preprocessor to the compiler. This ensures that compiler errors/warnings 4078 have the correct original line numbers and filenames, regardless of any 4079 #include files. 4080 4081 iASL/Preprocessor: Fixed a couple of issues with comment handling and the 4082 pass-through of comments to the preprocessor output file (which becomes 4083 the compiler input file). Also fixed a problem with // comments that 4084 appear after a math expression. 4085 4086 iASL: Added support for the TCPA server table to the table compiler and 4087 template generator. (The client table was already previously supported) 4088 4089 iASL/Preprocessor: Added a permanent #define of the symbol "__IASL__" to 4090 identify the iASL compiler. 4091 4092 Cleaned up the use of the macros NEGATIVE and POSITIVE which were defined 4093 multiple times. The new names are ACPI_SIGN_NEGATIVE and 4094 ACPI_SIGN_POSITIVE. 4095 4096 AcpiHelp: Update to expand help messages for the iASL preprocessor 4097 directives. 4098 4099 4100 ---------------------------------------- 4101 19 June 2015. Summary of changes for version 20150619: 4102 4103 Two regressions in version 20150616 have been addressed: 4104 4105 Fixes some problems/issues with the C library macro removal (ACPI_STRLEN, 4106 etc.) This update changes ACPICA to only use the standard headers for 4107 functions, or the prototypes for the local versions of the C library 4108 functions. Across the source code, this required some additional casts 4109 for some Clib invocations for portability. Moved all local prototypes to 4110 a new file, acclib.h 4111 4112 Fixes several problems with recent changes to the handling of the FACS 4113 table that could cause some systems not to boot. 4114 4115 4116 ---------------------------------------- 4117 16 June 2015. Summary of changes for version 20150616: 4118 4119 4120 1) ACPICA kernel-resident subsystem: 4121 4122 Across the entire ACPICA source code base, the various macros for the C 4123 library functions (such as ACPI_STRLEN, etc.) have been removed and 4124 replaced by the standard C library names (strlen, etc.) The original 4125 purpose for these macros is no longer applicable. This simplification 4126 reduces the number of macros used in the ACPICA source code 4127 significantly, improving readability and maintainability. 4128 4129 Implemented support for a new ACPI table, the OSDT. This table, the 4130 "override" SDT, can be loaded directly by the host OS at boot time. It 4131 enables the replacement of existing namespace objects that were installed 4132 via the DSDT and/or SSDTs. The primary purpose for this is to replace 4133 buggy or incorrect ASL/AML code obtained via the BIOS. The OSDT is slated 4134 for inclusion in a future version of the ACPI Specification. Lv Zheng/Bob 4135 Moore. 4136 4137 Added support for systems with (improperly) two FACS tables -- a "32-bit" 4138 table (via FADT 32-bit legacy field) and a "64-bit" table (via the 64-bit 4139 X field). This change will support both automatically. There continues to 4140 be systems found with this issue. This support requires a change to the 4141 AcpiSetFirmwareWakingVector interface. Also, a public global variable has 4142 been added to allow the host to select which FACS is desired 4143 (AcpiGbl_Use32BitFacsAddresses). See the ACPICA reference for more 4144 details Lv Zheng. 4145 4146 Added a new feature to allow for systems that do not contain an FACS. 4147 Although this is already supported on hardware-reduced platforms, the 4148 feature has been extended for all platforms. The reasoning is that we do 4149 not want to abort the entire ACPICA initialization just because the 4150 system is seriously buggy and has no FACS. 4151 4152 Fixed a problem where the GUID strings for NFIT tables (in acuuid.h) were 4153 not correctly transcribed from the ACPI specification in ACPICA version 4154 20150515. 4155 4156 Implemented support for the _CLS object in the AcpiGetObjectInfo external 4157 interface. 4158 4159 Updated the definitions of the TCPA and TPM2 ACPI tables to the more 4160 recent TCG ACPI Specification, December 14, 2014. Table disassembler and 4161 compiler also updated. Note: The TCPA "server" table is not supported by 4162 the disassembler/table-compiler at this time. 4163 4164 ACPI 6.0: Added definitions for the new GIC version field in the MADT. 4165 4166 Example Code and Data Size: These are the sizes for the OS-independent 4167 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4168 debug version of the code includes the debug output trace mechanism and 4169 has a much larger code and data size. 4170 4171 Current Release: 4172 Non-Debug Version: 100.6K Code, 27.6K Data, 128.2K Total 4173 Debug Version: 196.2K Code, 81.0K Data, 277.2K Total 4174 Previous Release: 4175 Non-Debug Version: 99.9K Code, 27.5K Data, 127.4K Total 4176 Debug Version: 195.2K Code, 80.8K Data, 276.0K Total 4177 4178 4179 2) iASL Compiler/Disassembler and Tools: 4180 4181 Disassembler: Fixed a problem with the new symbolic operator disassembler 4182 where incorrect ASL code could be emitted in some cases for the "non- 4183 commutative" operators -- Subtract, Divide, Modulo, ShiftLeft, and 4184 ShiftRight. The actual problem cases seem to be rather unusual in common 4185 ASL code, however. David Box. 4186 4187 Modified the linux version of acpidump to obtain ACPI tables from not 4188 just /dev/mem (which may not exist) and /sys/firmware/acpi/tables. Lv 4189 Zheng. 4190 4191 iASL: Fixed a problem where the user preprocessor output file (.i) 4192 contained extra data that was not expected. The compiler was using this 4193 file as a temporary file and passed through #line directives in order to 4194 keep compiler error messages in sync with the input file and line number 4195 across multiple include files. The (.i) is no longer a temporary file as 4196 the compiler uses a new, different file for the original purpose. 4197 4198 iASL: Fixed a problem where comments within the original ASL source code 4199 file were not passed through to the preprocessor output file, nor any 4200 listing files. 4201 4202 iASL: Fixed some issues for the handling of the "#include" preprocessor 4203 directive and the similar (but not the same) "Include" ASL operator. 4204 4205 iASL: Add support for the new OSDT in both the disassembler and compiler. 4206 4207 iASL: Fixed a problem with the constant folding support where a Buffer 4208 object could be incorrectly generated (incorrectly formed) during a 4209 conversion to a Store() operator. 4210 4211 AcpiHelp: Updated for new NFIT GUIDs, "External" AML opcode, and new 4212 description text for the _REV predefined name. _REV now permanently 4213 returns 2, as per the ACPI 6.0 specification. 4214 4215 Debugger: Enhanced the output of the Debug ASL object for references 4216 produced by the Index operator. For Buffers and strings, only output the 4217 actual byte pointed to by the index. For packages, only print the single 4218 package element decoded by the index. Previously, the entire 4219 buffer/string/package was emitted. 4220 4221 iASL/Table-compiler: Fixed a regression where the "generic" data types 4222 were no longer recognized, causing errors. 4223 4224 4225 ---------------------------------------- 4226 15 May 2015. Summary of changes for version 20150515: 4227 4228 This release implements most of ACPI 6.0 as described below. 4229 4230 1) ACPICA kernel-resident subsystem: 4231 4232 Implemented runtime argument checking and return value checking for all 4233 new ACPI 6.0 predefined names. This includes: _BTH, _CR3, _DSD, _LPI, 4234 _MTL, _PRR, _RDI, _RST, _TFP, _TSN. 4235 4236 Example Code and Data Size: These are the sizes for the OS-independent 4237 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4238 debug version of the code includes the debug output trace mechanism and 4239 has a much larger code and data size. 4240 4241 Current Release: 4242 Non-Debug Version: 99.9K Code, 27.5K Data, 127.4K Total 4243 Debug Version: 195.2K Code, 80.8K Data, 276.0K Total 4244 Previous Release: 4245 Non-Debug Version: 99.1K Code, 27.3K Data, 126.4K Total 4246 Debug Version: 192.8K Code, 79.9K Data, 272.7K Total 4247 4248 4249 2) iASL Compiler/Disassembler and Tools: 4250 4251 iASL compiler: Added compile-time support for all new ACPI 6.0 predefined 4252 names (argument count validation and return value typechecking.) 4253 4254 iASL disassembler and table compiler: implemented support for all new 4255 ACPI 6.0 tables. This includes: DRTM, IORT, LPIT, NFIT, STAO, WPBT, XENV. 4256 4257 iASL disassembler and table compiler: Added ACPI 6.0 changes to existing 4258 tables: FADT, MADT. 4259 4260 iASL preprocessor: Added a new directive to enable inclusion of binary 4261 blobs into ASL code. The new directive is #includebuffer. It takes a 4262 binary file as input and emits a named ascii buffer object into the ASL 4263 code. 4264 4265 AcpiHelp: Added support for all new ACPI 6.0 predefined names. 4266 4267 AcpiHelp: Added a new option, -d, to display all iASL preprocessor 4268 directives. 4269 4270 AcpiHelp: Added a new option, -t, to display all known/supported ACPI 4271 tables. 4272 4273 4274 ---------------------------------------- 4275 10 April 2015. Summary of changes for version 20150410: 4276 4277 Reverted a change introduced in version 20150408 that caused 4278 a regression in the disassembler where incorrect operator 4279 symbols could be emitted. 4280 4281 4282 ---------------------------------------- 4283 08 April 2015. Summary of changes for version 20150408: 4284 4285 4286 1) ACPICA kernel-resident subsystem: 4287 4288 Permanently set the return value for the _REV predefined name. It now 4289 returns 2 (was 5). This matches other ACPI implementations. _REV will be 4290 deprecated in the future, and is now defined to be 1 for ACPI 1.0, and 2 4291 for ACPI 2.0 and later. It should never be used to differentiate or 4292 identify operating systems. 4293 4294 Added the "Windows 2015" string to the _OSI support. ACPICA will now 4295 return TRUE to a query with this string. 4296 4297 Fixed several issues with the local version of the printf function. 4298 4299 Added the C99 compiler option (-std=c99) to the Unix makefiles. 4300 4301 Current Release: 4302 Non-Debug Version: 99.9K Code, 27.4K Data, 127.3K Total 4303 Debug Version: 195.2K Code, 80.7K Data, 275.9K Total 4304 Previous Release: 4305 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total 4306 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total 4307 4308 4309 2) iASL Compiler/Disassembler and Tools: 4310 4311 iASL: Implemented an enhancement to the constant folding feature to 4312 transform the parse tree to a simple Store operation whenever possible: 4313 Add (2, 3, X) ==> is converted to: Store (5, X) 4314 X = 2 + 3 ==> is converted to: Store (5, X) 4315 4316 Updated support for the SLIC table (Software Licensing Description Table) 4317 in both the Data Table compiler and the disassembler. The SLIC table 4318 support now conforms to "Microsoft Software Licensing Tables (SLIC and 4319 MSDM). November 29, 2011. Copyright 2011 Microsoft". Note: Any SLIC data 4320 following the ACPI header is now defined to be "Proprietary Data", and as 4321 such, can only be entered or displayed as a hex data block. 4322 4323 Implemented full support for the MSDM table as described in the document 4324 above. Note: The format of MSDM is similar to SLIC. Any MSDM data 4325 following the ACPI header is defined to be "Proprietary Data", and can 4326 only be entered or displayed as a hex data block. 4327 4328 Implemented the -Pn option for the iASL Table Compiler (was only 4329 implemented for the ASL compiler). This option disables the iASL 4330 preprocessor. 4331 4332 Disassembler: For disassembly of Data Tables, added a comment field 4333 around the Ascii equivalent data that is emitted as part of the "Raw 4334 Table Data" block. This prevents the iASL Preprocessor from possible 4335 confusion if/when the table is compiled. 4336 4337 Disassembler: Added an option (-df) to force the disassembler to assume 4338 that the table being disassembled contains valid AML. This feature is 4339 useful for disassembling AML files that contain ACPI signatures other 4340 than DSDT or SSDT (such as OEMx or other signatures). 4341 4342 Changes for the EFI version of the tools: 4343 1) Fixed a build error/issue 4344 2) Fixed a cast warning 4345 4346 iASL: Fixed a path issue with the __FILE__ operator by making the 4347 directory prefix optional within the internal SplitInputFilename 4348 function. 4349 4350 Debugger: Removed some unused global variables. 4351 4352 Tests: Updated the makefile for proper generation of the AAPITS suite. 4353 4354 4355 ---------------------------------------- 4356 04 February 2015. Summary of changes for version 20150204: 4357 4358 ACPICA kernel-resident subsystem: 4359 4360 Updated all ACPICA copyrights and signons to 2014. Added the 2014 4361 copyright to all module headers and signons, including the standard Linux 4362 header. This affects virtually every file in the ACPICA core subsystem, 4363 iASL compiler, all ACPICA utilities, and the test suites. 4364 4365 Events: Introduce ACPI_GPE_DISPATCH_RAW_HANDLER to fix GPE storm issues. 4366 A raw gpe handling mechanism was created to allow better handling of GPE 4367 storms that aren't easily managed by the normal handler. The raw handler 4368 allows disabling/renabling of the GPE so that interrupt storms can be 4369 avoided in cases where events cannot be timely serviced. In this 4370 scenario, handlers should use the AcpiSetGpe() API to disable/enable the 4371 GPE. This API will leave the reference counts undisturbed, thereby 4372 preventing unintentional clearing of the GPE when the intent in only to 4373 temporarily disable it. Raw handlers allow enabling and disabling of a 4374 GPE by removing GPE register locking. As such, raw handlers much provide 4375 their own locks while using GPE API's to protect access to GPE data 4376 structures. 4377 Lv Zheng 4378 4379 Events: Always modify GPE registers under the GPE lock. 4380 Applies GPE lock around AcpiFinishGpe() to protect access to GPE register 4381 values. Reported as bug by joe.liu (a] apple.com. 4382 4383 Unix makefiles: Separate option to disable optimizations and 4384 _FORTIFY_SOURCE. This change removes the _FORTIFY_SOURCE flag from the 4385 NOOPT disable option and creates a separate flag (NOFORTIFY) for this 4386 purpose. Some toolchains may define _FORTIFY_SOURCE which leads redefined 4387 errors when building ACPICA. This allows disabling the option without 4388 also having to disable optimazations. 4389 David Box 4390 4391 Current Release: 4392 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total 4393 Debug Version: 199.2K Code, 82.4K Data, 281.6K Total 4394 4395 -- 4396 -------------------------------------- 4397 07 November 2014. Summary of changes for version 20141107: 4398 4399 This release is available at https://acpica.org/downloads 4400 4401 This release introduces and implements language extensions to ASL that 4402 provide support for symbolic ("C-style") operators and expressions. These 4403 language extensions are known collectively as ASL+. 4404 4405 4406 1) iASL Compiler/Disassembler and Tools: 4407 4408 Disassembler: Fixed a problem with disassembly of the UartSerialBus 4409 macro. Changed "StopBitsNone" to the correct "StopBitsZero". David E. 4410 Box. 4411 4412 Disassembler: Fixed the Unicode macro support to add escape sequences. 4413 All non-printable ASCII values are emitted as escape sequences, as well 4414 as the standard escapes for quote and backslash. Ensures that the 4415 disassembled macro can be correctly recompiled. 4416 4417 iASL: Added Printf/Fprintf macros for formatted output. These macros are 4418 translated to existing AML Concatenate and Store operations. Printf 4419 writes to the ASL Debug object. Fprintf allows the specification of an 4420 ASL name as the target. Only a single format specifier is required, %o, 4421 since the AML interpreter dynamically converts objects to the required 4422 type. David E. Box. 4423 4424 (old) Store (Concatenate (Concatenate (Concatenate (Concatenate 4425 (Concatenate (Concatenate (Concatenate ("", Arg0), 4426 ": Unexpected value for "), Arg1), ", "), Arg2), 4427 " at line "), Arg3), Debug) 4428 4429 (new) Printf ("%o: Unexpected value for %o, %o at line %o", 4430 Arg0, Arg1, Arg2, Arg3) 4431 4432 (old) Store (Concatenate (Concatenate (Concatenate (Concatenate 4433 ("", Arg1), ": "), Arg0), " Successful"), STR1) 4434 4435 (new) Fprintf (STR1, "%o: %o Successful", Arg1, Arg0) 4436 4437 iASL: Added debug options (-bp, -bt) to dynamically prune levels of the 4438 ASL parse tree before the AML code is generated. This allows blocks of 4439 ASL code to be removed in order to help locate and identify problem 4440 devices and/or code. David E. Box. 4441 4442 AcpiExec: Added support (-fi) for an optional namespace object 4443 initialization file. This file specifies initial values for namespace 4444 objects as necessary for debugging and testing different ASL code paths 4445 that may be taken as a result of BIOS options. 4446 4447 4448 2) Overview of symbolic operator support for ASL (ASL+) 4449 ------------------------------------------------------- 4450 4451 As an extension to the ASL language, iASL implements support for symbolic 4452 (C-style) operators for math and logical expressions. This can greatly 4453 simplify ASL code as well as improve both readability and 4454 maintainability. These language extensions can exist concurrently with 4455 all legacy ASL code and expressions. 4456 4457 The symbolic extensions are 100% compatible with existing AML 4458 interpreters, since no new AML opcodes are created. To implement the 4459 extensions, the iASL compiler transforms the symbolic expressions into 4460 the legacy ASL/AML equivalents at compile time. 4461 4462 Full symbolic expressions are supported, along with the standard C 4463 precedence and associativity rules. 4464 4465 Full disassembler support for the symbolic expressions is provided, and 4466 creates an automatic migration path for existing ASL code to ASL+ code 4467 via the disassembly process. By default, the disassembler now emits ASL+ 4468 code with symbolic expressions. An option (-dl) is provided to force the 4469 disassembler to emit legacy ASL code if desired. 4470 4471 Below is the complete list of the currently supported symbolic operators 4472 with examples. See the iASL User Guide for additional information. 4473 4474 4475 ASL+ Syntax Legacy ASL Equivalent 4476 ----------- --------------------- 4477 4478 // Math operators 4479 4480 Z = X + Y Add (X, Y, Z) 4481 Z = X - Y Subtract (X, Y, Z) 4482 Z = X * Y Multiply (X, Y, Z) 4483 Z = X / Y Divide (X, Y, , Z) 4484 Z = X % Y Mod (X, Y, Z) 4485 Z = X << Y ShiftLeft (X, Y, Z) 4486 Z = X >> Y ShiftRight (X, Y, Z) 4487 Z = X & Y And (X, Y, Z) 4488 Z = X | Y Or (X, Y, Z) 4489 Z = X ^ Y Xor (X, Y, Z) 4490 Z = ~X Not (X, Z) 4491 X++ Increment (X) 4492 X-- Decrement (X) 4493 4494 // Logical operators 4495 4496 (X == Y) LEqual (X, Y) 4497 (X != Y) LNotEqual (X, Y) 4498 (X < Y) LLess (X, Y) 4499 (X > Y) LGreater (X, Y) 4500 (X <= Y) LLessEqual (X, Y) 4501 (X >= Y) LGreaterEqual (X, Y) 4502 (X && Y) LAnd (X, Y) 4503 (X || Y) LOr (X, Y) 4504 (!X) LNot (X) 4505 4506 // Assignment and compound assignment operations 4507 4508 X = Y Store (Y, X) 4509 X += Y Add (X, Y, X) 4510 X -= Y Subtract (X, Y, X) 4511 X *= Y Multiply (X, Y, X) 4512 X /= Y Divide (X, Y, , X) 4513 X %= Y Mod (X, Y, X) 4514 X <<= Y ShiftLeft (X, Y, X) 4515 X >>= Y ShiftRight (X, Y, X) 4516 X &= Y And (X, Y, X) 4517 X |= Y Or (X, Y, X) 4518 X ^= Y Xor (X, Y, X) 4519 4520 4521 3) ASL+ Examples: 4522 ----------------- 4523 4524 Legacy ASL: 4525 If (LOr (LOr (LEqual (And (R510, 0x03FB), 0x02E0), LEqual ( 4526 And (R520, 0x03FB), 0x02E0)), LOr (LEqual (And (R530, 4527 0x03FB), 4528 0x02E0), LEqual (And (R540, 0x03FB), 0x02E0)))) 4529 { 4530 And (MEMB, 0xFFFFFFF0, SRMB) 4531 Store (MEMB, Local2) 4532 Store (PDBM, Local1) 4533 And (PDBM, 0xFFFFFFFFFFFFFFF9, PDBM) 4534 Store (SRMB, MEMB) 4535 Or (PDBM, 0x02, PDBM) 4536 } 4537 4538 ASL+ version: 4539 If (((R510 & 0x03FB) == 0x02E0) || 4540 ((R520 & 0x03FB) == 0x02E0) || 4541 ((R530 & 0x03FB) == 0x02E0) || 4542 ((R540 & 0x03FB) == 0x02E0)) 4543 { 4544 SRMB = (MEMB & 0xFFFFFFF0) 4545 Local2 = MEMB 4546 Local1 = PDBM 4547 PDBM &= 0xFFFFFFFFFFFFFFF9 4548 MEMB = SRMB 4549 PDBM |= 0x02 4550 } 4551 4552 Legacy ASL: 4553 Store (0x1234, Local1) 4554 Multiply (Add (Add (Local1, TEST), 0x20), Local2, Local3) 4555 Multiply (Local2, Add (Add (Local1, TEST), 0x20), Local3) 4556 Add (Local1, Add (TEST, Multiply (0x20, Local2)), Local3) 4557 Store (Index (PKG1, 0x03), Local6) 4558 Store (Add (Local3, Local2), Debug) 4559 Add (Local1, 0x0F, Local2) 4560 Add (Local1, Multiply (Local2, Local3), Local2) 4561 Multiply (Add (Add (Local1, TEST), 0x20), ToBCD (Local1), Local3) 4562 4563 ASL+ version: 4564 Local1 = 0x1234 4565 Local3 = (((Local1 + TEST) + 0x20) * Local2) 4566 Local3 = (Local2 * ((Local1 + TEST) + 0x20)) 4567 Local3 = (Local1 + (TEST + (0x20 * Local2))) 4568 Local6 = Index (PKG1, 0x03) 4569 Debug = (Local3 + Local2) 4570 Local2 = (Local1 + 0x0F) 4571 Local2 = (Local1 + (Local2 * Local3)) 4572 Local3 = (((Local1 + TEST) + 0x20) * ToBCD (Local1)) 4573 4574 4575 ---------------------------------------- 4576 26 September 2014. Summary of changes for version 20140926: 4577 4578 1) ACPICA kernel-resident subsystem: 4579 4580 Updated the GPIO operation region handler interface (GeneralPurposeIo). 4581 In order to support GPIO Connection objects with multiple pins, along 4582 with the related Field objects, the following changes to the interface 4583 have been made: The Address is now defined to be the offset in bits of 4584 the field unit from the previous invocation of a Connection. It can be 4585 viewed as a "Pin Number Index" into the connection resource descriptor. 4586 The BitWidth is the exact bit width of the field. It is usually one bit, 4587 but not always. See the ACPICA reference guide (section 8.8.6.2.1) for 4588 additional information and examples. 4589 4590 GPE support: During ACPICA/GPE initialization, ensure that all GPEs with 4591 corresponding _Lxx/_Exx methods are disabled (they may have been enabled 4592 by the firmware), so that they cannot fire until they are enabled via 4593 AcpiUpdateAllGpes. Rafael J. Wysocki. 4594 4595 Added a new return flag for the Event/GPE status interfaces -- 4596 AcpiGetEventStatus and AcpiGetGpeStatus. The new 4597 ACPI_EVENT_FLAGS_HAS_HANDLER flag is used to indicate that the event or 4598 GPE currently has a handler associated with it, and can thus actually 4599 affect the system. Lv Zheng. 4600 4601 Example Code and Data Size: These are the sizes for the OS-independent 4602 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4603 debug version of the code includes the debug output trace mechanism and 4604 has a much larger code and data size. 4605 4606 Current Release: 4607 Non-Debug Version: 99.1K Code, 27.3K Data, 126.4K Total 4608 Debug Version: 192.8K Code, 79.9K Data, 272.7K Total 4609 Previous Release: 4610 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total 4611 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total 4612 4613 2) iASL Compiler/Disassembler and Tools: 4614 4615 iASL: Fixed a memory allocation/free regression introduced in 20140828 4616 that could cause the compiler to crash. This was introduced inadvertently 4617 during the effort to eliminate compiler memory leaks. ACPICA BZ 1111, 4618 1113. 4619 4620 iASL: Removed two error messages that have been found to create false 4621 positives, until they can be fixed and fully validated (ACPICA BZ 1112): 4622 1) Illegal forward reference within a method 4623 2) Illegal reference across two methods 4624 4625 iASL: Implemented a new option (-lm) to create a hardware mapping file 4626 that summarizes all GPIO, I2C, SPI, and UART connections. This option 4627 works for both the compiler and disassembler. See the iASL compiler user 4628 guide for additional information and examples (section 6.4.6). 4629 4630 AcpiDump: Added support for the version 1 (ACPI 1.0) RSDP in addition to 4631 version 2. This corrects the AE_BAD_HEADER exception seen on systems with 4632 a version 1 RSDP. Lv Zheng ACPICA BZ 1097. 4633 4634 AcpiExec: For Unix versions, don't attempt to put STDIN into raw mode 4635 unless STDIN is actually a terminal. Assists with batch-mode processing. 4636 ACPICA BZ 1114. 4637 4638 Disassembler/AcpiHelp: Added another large group of recognized _HID 4639 values. 4640 4641 4642 ---------------------------------------- 4643 28 August 2014. Summary of changes for version 20140828: 4644 4645 1) ACPICA kernel-resident subsystem: 4646 4647 Fixed a problem related to the internal use of the Timer() operator where 4648 a 64-bit divide could cause an attempted link to a double-precision math 4649 library. This divide is not actually necessary, so the code was 4650 restructured to eliminate it. Lv Zheng. 4651 4652 ACPI 5.1: Added support for the runtime validation of the _DSD package 4653 (similar to the iASL support). 4654 4655 ACPI 5.1/Headers: Added support for the GICC affinity subtable to the 4656 SRAT table. Hanjun Guo <hanjun.guo (a] linaro.org>. 4657 4658 Example Code and Data Size: These are the sizes for the OS-independent 4659 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4660 debug version of the code includes the debug output trace mechanism and 4661 has a much larger code and data size. 4662 4663 Current Release: 4664 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total 4665 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total 4666 Previous Release: 4667 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total1 4668 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total 4669 4670 2) iASL Compiler/Disassembler and Tools: 4671 4672 AcpiExec: Fixed a problem on unix systems where the original terminal 4673 state was not always properly restored upon exit. Seen when using the -v 4674 option. ACPICA BZ 1104. 4675 4676 iASL: Fixed a problem with the validation of the ranges/length within the 4677 Memory24 resource descriptor. There was a boundary condition when the 4678 range was equal to the (length -1) caused by the fact that these values 4679 are defined in 256-byte blocks, not bytes. ACPICA BZ 1098 4680 4681 Disassembler: Fixed a problem with the GpioInt descriptor interrupt 4682 polarity 4683 flags. The flags are actually 2 bits, not 1, and the "ActiveBoth" keyword 4684 is 4685 now supported properly. 4686 4687 ACPI 5.1: Added the GICC affinity subtable to the SRAT table. Supported 4688 in the disassembler, data table compiler, and table template generator. 4689 4690 iASL: Added a requirement for Device() objects that one of either a _HID 4691 or _ADR must exist within the scope of a Device, as per the ACPI 4692 specification. Remove a similar requirement that was incorrectly in place 4693 for the _DSD object. 4694 4695 iASL: Added error detection for illegal named references within control 4696 methods that would cause runtime failures. Now trapped as errors are: 1) 4697 References to objects within a non-parent control method. 2) Forward 4698 references (within a method) -- for control methods, AML interpreters use 4699 a one-pass parse of control methods. ACPICA BZ 1008. 4700 4701 iASL: Added error checking for dependencies related to the _PSx power 4702 methods. ACPICA BZ 1029. 4703 1) For _PS0, one of these must exist within the same scope: _PS1, _PS2, 4704 _PS3. 4705 2) For _PS1, _PS2, and PS3: A _PS0 object must exist within the same 4706 scope. 4707 4708 iASL and table compiler: Cleanup miscellaneous memory leaks by fully 4709 deploying the existing object and string caches and adding new caches for 4710 the table compiler. 4711 4712 iASL: Split the huge parser source file into multiple subfiles to improve 4713 manageability. Generation now requires the M4 macro preprocessor, which 4714 is part of the Bison distribution on both unix and windows platforms. 4715 4716 AcpiSrc: Fixed and removed all extraneous warnings generated during 4717 entire ACPICA source code scan and/or conversion. 4718 4719 4720 ---------------------------------------- 4721 4722 24 July 2014. Summary of changes for version 20140724: 4723 4724 The ACPI 5.1 specification has been released and is available at: 4725 http://uefi.org/specs/access 4726 4727 4728 0) ACPI 5.1 support in ACPICA: 4729 4730 ACPI 5.1 is fully supported in ACPICA as of this release. 4731 4732 New predefined names. Support includes iASL and runtime ACPICA 4733 validation. 4734 _CCA (Cache Coherency Attribute). 4735 _DSD (Device-Specific Data). David Box. 4736 4737 Modifications to existing ACPI tables. Support includes headers, iASL 4738 Data Table compiler, disassembler, and the template generator. 4739 FADT - New fields and flags. Graeme Gregory. 4740 GTDT - One new subtable and new fields. Tomasz Nowicki. 4741 MADT - Two new subtables. Tomasz Nowicki. 4742 PCCT - One new subtable. 4743 4744 Miscellaneous. 4745 New notification type for System Resource Affinity change events. 4746 4747 4748 1) ACPICA kernel-resident subsystem: 4749 4750 Fixed a regression introduced in 20140627 where a fault can happen during 4751 the deletion of Alias AML namespace objects. The problem affected both 4752 the core ACPICA and the ACPICA tools including iASL and AcpiExec. 4753 4754 Implemented a new GPE public interface, AcpiMarkGpeForWake. Provides a 4755 simple mechanism to enable wake GPEs that have no associated handler or 4756 control method. Rafael Wysocki. 4757 4758 Updated the AcpiEnableGpe interface to disallow the enable if there is no 4759 handler or control method associated with the particular GPE. This will 4760 help avoid meaningless GPEs and even GPE floods. Rafael Wysocki. 4761 4762 Updated GPE handling and dispatch by disabling the GPE before clearing 4763 the status bit for edge-triggered GPEs. Lv Zheng. 4764 4765 Added Timer() support to the AML Debug object. The current timer value is 4766 now displayed with each invocation of (Store to) the debug object to 4767 enable simple generation of execution times for AML code (method 4768 execution for example.) ACPICA BZ 1093. 4769 4770 Example Code and Data Size: These are the sizes for the OS-independent 4771 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4772 debug version of the code includes the debug output trace mechanism and 4773 has a much larger code and data size. 4774 4775 Current Release: 4776 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total 4777 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total 4778 Previous Release: 4779 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total 4780 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total 4781 4782 4783 2) iASL Compiler/Disassembler and Tools: 4784 4785 Fixed an issue with the recently added local printf implementation, 4786 concerning width/precision specifiers that could cause incorrect output. 4787 Lv Zheng. ACPICA BZ 1094. 4788 4789 Disassembler: Added support to detect buffers that contain UUIDs and 4790 disassemble them to an invocation of the ToUUID operator. Also emit 4791 commented descriptions of known ACPI-related UUIDs. 4792 4793 AcpiHelp: Added support to display known ACPI-related UUIDs. New option, 4794 -u. Adds three new files. 4795 4796 iASL: Update table compiler and disassembler for DMAR table changes that 4797 were introduced in September 2013. With assistance by David Woodhouse. 4798 4799 ---------------------------------------- 4800 27 June 2014. Summary of changes for version 20140627: 4801 4802 1) ACPICA kernel-resident subsystem: 4803 4804 Formatted Output: Implemented local versions of standard formatted output 4805 utilities such as printf, etc. Over time, it has been discovered that 4806 there are in fact many portability issues with printf, and the addition 4807 of this feature will fix/prevent these issues once and for all. Some 4808 known issues are summarized below: 4809 4810 1) Output of 64-bit values is not portable. For example, UINT64 is %ull 4811 for the Linux kernel and is %uI64 for some MSVC versions. 4812 2) Invoking printf consistently in a manner that is portable across both 4813 32-bit and 64-bit platforms is difficult at best in many situations. 4814 3) The output format for pointers varies from system to system (leading 4815 zeros especially), and leads to inconsistent output from ACPICA across 4816 platforms. 4817 4) Certain platform-specific printf formats may conflict with ACPICA use. 4818 5) If there is no local C library available, ACPICA now has local support 4819 for printf. 4820 4821 -- To address these printf issues in a complete manner, ACPICA now 4822 directly implements a small subset of printf format specifiers, only 4823 those that it requires. Adds a new file, utilities/utprint.c. Lv Zheng. 4824 4825 Implemented support for ACPICA generation within the EFI environment. 4826 Initially, the AcpiDump utility is supported in the UEFI shell 4827 environment. Lv Zheng. 4828 4829 Added a new external interface, AcpiLogError, to improve ACPICA 4830 portability. This allows the host to redirect error messages from the 4831 ACPICA utilities. Lv Zheng. 4832 4833 Added and deployed new OSL file I/O interfaces to improve ACPICA 4834 portability: 4835 AcpiOsOpenFile 4836 AcpiOsCloseFile 4837 AcpiOsReadFile 4838 AcpiOsWriteFile 4839 AcpiOsGetFileOffset 4840 AcpiOsSetFileOffset 4841 There are C library implementations of these functions in the new file 4842 service_layers/oslibcfs.c -- however, the functions can be implemented by 4843 the local host in any way necessary. Lv Zheng. 4844 4845 Implemented a mechanism to disable/enable ACPI table checksum validation 4846 at runtime. This can be useful when loading tables very early during OS 4847 initialization when it may not be possible to map the entire table in 4848 order to compute the checksum. Lv Zheng. 4849 4850 Fixed a buffer allocation issue for the Generic Serial Bus support. 4851 Originally, a fixed buffer length was used. This change allows for 4852 variable-length buffers based upon the protocol indicated by the field 4853 access attributes. Reported by Lan Tianyu. Lv Zheng. 4854 4855 Fixed a problem where an object detached from a namespace node was not 4856 properly terminated/cleared and could cause a circular list problem if 4857 reattached. ACPICA BZ 1063. David Box. 4858 4859 Fixed a possible recursive lock acquisition in hwregs.c. Rakib Mullick. 4860 4861 Fixed a possible memory leak in an error return path within the function 4862 AcpiUtCopyIobjectToIobject. ACPICA BZ 1087. Colin Ian King. 4863 4864 Example Code and Data Size: These are the sizes for the OS-independent 4865 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4866 debug version of the code includes the debug output trace mechanism and 4867 has a much larger code and data size. 4868 4869 Current Release: 4870 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total 4871 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total 4872 Previous Release: 4873 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total 4874 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total 4875 4876 4877 2) iASL Compiler/Disassembler and Tools: 4878 4879 Disassembler: Add dump of ASCII equivalent text within a comment at the 4880 end of each line of the output for the Buffer() ASL operator. 4881 4882 AcpiDump: Miscellaneous changes: 4883 Fixed repetitive table dump in -n mode. 4884 For older EFI platforms, use the ACPI 1.0 GUID during RSDP search if 4885 the ACPI 2.0 GUID fails. 4886 4887 iASL: Fixed a problem where the compiler could fault if incorrectly given 4888 an acpidump output file as input. ACPICA BZ 1088. David Box. 4889 4890 AcpiExec/AcpiNames: Fixed a problem where these utilities could fault if 4891 they are invoked without any arguments. 4892 4893 Debugger: Fixed a possible memory leak in an error return path. ACPICA BZ 4894 1086. Colin Ian King. 4895 4896 Disassembler: Cleaned up a block of code that extracts a parent Op 4897 object. Added a comment that explains that the parent is guaranteed to be 4898 valid in this case. ACPICA BZ 1069. 4899 4900 4901 ---------------------------------------- 4902 24 April 2014. Summary of changes for version 20140424: 4903 4904 1) ACPICA kernel-resident subsystem: 4905 4906 Implemented support to skip/ignore NULL address entries in the RSDT/XSDT. 4907 Some of these tables are known to contain a trailing NULL entry. Lv 4908 Zheng. 4909 4910 Removed an extraneous error message for the case where there are a large 4911 number of system GPEs (> 124). This was the "32-bit FADT register is too 4912 long to convert to GAS struct" message, which is irrelevant for GPEs 4913 since the GPEx_BLK_LEN fields of the FADT are always used instead of the 4914 (limited capacity) GAS bit length. Also, several changes to ensure proper 4915 support for GPE numbers > 255, where some "GPE number" fields were 8-bits 4916 internally. 4917 4918 Implemented and deployed additional configuration support for the public 4919 ACPICA external interfaces. Entire classes of interfaces can now be 4920 easily modified or configured out, replaced by stubbed inline functions 4921 by default. Lv Zheng. 4922 4923 Moved all public ACPICA runtime configuration globals to the public 4924 ACPICA external interface file for convenience. Also, removed some 4925 obsolete/unused globals. See the file acpixf.h. Lv Zheng. 4926 4927 Documentation: Added a new section to the ACPICA reference describing the 4928 maximum number of GPEs that can be supported by the FADT-defined GPEs in 4929 block zero and one. About 1200 total. See section 4.4.1 of the ACPICA 4930 reference. 4931 4932 Example Code and Data Size: These are the sizes for the OS-independent 4933 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4934 debug version of the code includes the debug output trace mechanism and 4935 has a much larger code and data size. 4936 4937 Current Release: 4938 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total 4939 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total 4940 Previous Release: 4941 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total 4942 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total 4943 4944 4945 2) iASL Compiler/Disassembler and Tools: 4946 4947 iASL and disassembler: Add full support for the LPIT table (Low Power 4948 Idle Table). Includes support in the disassembler, data table compiler, 4949 and template generator. 4950 4951 AcpiDump utility: 4952 1) Add option to force the use of the RSDT (over the XSDT). 4953 2) Improve validation of the RSDP signature (use 8 chars instead of 4). 4954 4955 iASL: Add check for predefined packages that are too large. For 4956 predefined names that contain subpackages, check if each subpackage is 4957 too large. (Check for too small already exists.) 4958 4959 Debugger: Updated the GPE command (which simulates a GPE by executing the 4960 GPE code paths in ACPICA). The GPE device is now optional, and defaults 4961 to the GPE 0/1 FADT-defined blocks. 4962 4963 Unix application OSL: Update line-editing support. Add additional error 4964 checking and take care not to reset terminal attributes on exit if they 4965 were never set. This should help guarantee that the terminal is always 4966 left in the previous state on program exit. 4967 4968 4969 ---------------------------------------- 4970 25 March 2014. Summary of changes for version 20140325: 4971 4972 1) ACPICA kernel-resident subsystem: 4973 4974 Updated the auto-serialize feature for control methods. This feature 4975 automatically serializes all methods that create named objects in order 4976 to prevent runtime errors. The update adds support to ignore the 4977 currently executing AML SyncLevel when invoking such a method, in order 4978 to prevent disruption of any existing SyncLevel priorities that may exist 4979 in the AML code. Although the use of SyncLevels is relatively rare, this 4980 change fixes a regression where an AE_AML_MUTEX_ORDER exception can 4981 appear on some machines starting with the 20140214 release. 4982 4983 Added a new external interface to allow the host to install ACPI tables 4984 very early, before the namespace is even created. AcpiInstallTable gives 4985 the host additional flexibility for ACPI table management. Tables can be 4986 installed directly by the host as if they had originally appeared in the 4987 XSDT/RSDT. Installed tables can be SSDTs or other ACPI data tables 4988 (anything except the DSDT and FACS). Adds a new file, tbdata.c, along 4989 with additional internal restructuring and cleanup. See the ACPICA 4990 Reference for interface details. Lv Zheng. 4991 4992 Added validation of the checksum for all incoming dynamically loaded 4993 tables (via external interfaces or via AML Load/LoadTable operators). Lv 4994 Zheng. 4995 4996 Updated the use of the AcpiOsWaitEventsComplete interface during Notify 4997 and GPE handler removal. Restructured calls to eliminate possible race 4998 conditions. Lv Zheng. 4999 5000 Added a warning for the use/execution of the ASL/AML Unload (table) 5001 operator. This will help detect and identify machines that use this 5002 operator if and when it is ever used. This operator has never been seen 5003 in the field and the usage model and possible side-effects of the drastic 5004 runtime action of a full table removal are unknown. 5005 5006 Reverted the use of #pragma push/pop which was introduced in the 20140214 5007 release. It appears that push and pop are not implemented by enough 5008 compilers to make the use of this feature feasible for ACPICA at this 5009 time. However, these operators may be deployed in a future ACPICA 5010 release. 5011 5012 Added the missing EXPORT_SYMBOL macros for the install and remove SCI 5013 handler interfaces. 5014 5015 Source code generation: 5016 1) Disabled the use of the "strchr" macro for the gcc-specific 5017 generation. For some versions of gcc, this macro can periodically expose 5018 a compiler bug which in turn causes compile-time error(s). 5019 2) Added support for PPC64 compilation. Colin Ian King. 5020 5021 Example Code and Data Size: These are the sizes for the OS-independent 5022 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 5023 debug version of the code includes the debug output trace mechanism and 5024 has a much larger code and data size. 5025 5026 Current Release: 5027 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total 5028 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total 5029 Previous Release: 5030 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total 5031 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total 5032 5033 5034 2) iASL Compiler/Disassembler and Tools: 5035 5036 Disassembler: Added several new features to improve the readability of 5037 the resulting ASL code. Extra information is emitted within comment 5038 fields in the ASL code: 5039 1) Known _HID/_CID values are decoded to descriptive text. 5040 2) Standard values for the Notify() operator are decoded to descriptive 5041 text. 5042 3) Target operands are expanded to full pathnames (in a comment) when 5043 possible. 5044 5045 Disassembler: Miscellaneous updates for extern() handling: 5046 1) Abort compiler if file specified by -fe option does not exist. 5047 2) Silence unnecessary warnings about argument count mismatches. 5048 3) Update warning messages concerning unresolved method externals. 5049 4) Emit "UnknownObj" keyword for externals whose type cannot be 5050 determined. 5051 5052 AcpiHelp utility: 5053 1) Added the -a option to display both the ASL syntax and the AML 5054 encoding for an input ASL operator. This effectively displays all known 5055 information about an ASL operator with one AcpiHelp invocation. 5056 2) Added substring match support (similar to a wildcard) for the -i 5057 (_HID/PNP IDs) option. 5058 5059 iASL/Disassembler: Since this tool does not yet support execution on big- 5060 endian machines, added detection of endianness and an error message if 5061 execution is attempted on big-endian. Support for big-endian within iASL 5062 is a feature that is on the ACPICA to-be-done list. 5063 5064 AcpiBin utility: 5065 1) Remove option to extract binary files from an acpidump; this function 5066 is made obsolete by the AcpiXtract utility. 5067 2) General cleanup of open files and allocated buffers. 5068 5069 5070 ---------------------------------------- 5071 14 February 2014. Summary of changes for version 20140214: 5072 5073 1) ACPICA kernel-resident subsystem: 5074 5075 Implemented a new mechanism to proactively prevent problems with ill- 5076 behaved reentrant control methods that create named ACPI objects. This 5077 behavior is illegal as per the ACPI specification, but is nonetheless 5078 frequently seen in the field. Previously, this could lead to an 5079 AE_ALREADY_EXISTS exception if the method was actually entered by more 5080 than one thread. This new mechanism detects such methods at table load 5081 time and marks them "serialized" to prevent reentrancy. A new global 5082 option, AcpiGbl_AutoSerializeMethods, has been added to disable this 5083 feature if desired. This mechanism and global option obsoletes and 5084 supersedes the previous AcpiGbl_SerializeAllMethods option. 5085 5086 Added the "Windows 2013" string to the _OSI support. ACPICA will now 5087 respond TRUE to _OSI queries with this string. It is the stated policy of 5088 ACPICA to add new strings to the _OSI support as soon as possible after 5089 they are defined. See the full ACPICA _OSI policy which has been added to 5090 the utilities/utosi.c file. 5091 5092 Hardened/updated the _PRT return value auto-repair code: 5093 1) Do not abort the repair on a single subpackage failure, continue to 5094 check all subpackages. 5095 2) Add check for the minimum subpackage length (4). 5096 3) Properly handle extraneous NULL package elements. 5097 5098 Added support to avoid the possibility of infinite loops when traversing 5099 object linked lists. Never allow an infinite loop, even in the face of 5100 corrupted object lists. 5101 5102 ACPICA headers: Deployed the use of #pragma pack(push) and #pragma 5103 pack(pop) directives to ensure that the ACPICA headers are independent of 5104 compiler settings or other host headers. 5105 5106 Example Code and Data Size: These are the sizes for the OS-independent 5107 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 5108 debug version of the code includes the debug output trace mechanism and 5109 has a much larger code and data size. 5110 5111 Current Release: 5112 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total 5113 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total 5114 Previous Release: 5115 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total 5116 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total 5117 5118 5119 2) iASL Compiler/Disassembler and Tools: 5120 5121 iASL/Table-compiler: Fixed a problem with support for the SPMI table. The 5122 first reserved field was incorrectly forced to have a value of zero. This 5123 change correctly forces the field to have a value of one. ACPICA BZ 1081. 5124 5125 Debugger: Added missing support for the "Extra" and "Data" subobjects 5126 when displaying object data. 5127 5128 Debugger: Added support to display entire object linked lists when 5129 displaying object data. 5130 5131 iASL: Removed the obsolete -g option to obtain ACPI tables from the 5132 Windows registry. This feature has been superseded by the acpidump 5133 utility. 5134 5135 5136 ---------------------------------------- 5137 14 January 2014. Summary of changes for version 20140114: 5138 5139 1) ACPICA kernel-resident subsystem: 5140 5141 Updated all ACPICA copyrights and signons to 2014. Added the 2014 5142 copyright to all module headers and signons, including the standard Linux 5143 header. This affects virtually every file in the ACPICA core subsystem, 5144 iASL compiler, all ACPICA utilities, and the test suites. 5145 5146 Improved parameter validation for AcpiInstallGpeBlock. Added the 5147 following checks: 5148 1) The incoming device handle refers to type ACPI_TYPE_DEVICE. 5149 2) There is not already a GPE block attached to the device. 5150 Likewise, with AcpiRemoveGpeBlock, ensure that the incoming object is a 5151 device. 5152 5153 Correctly support "references" in the ACPI_OBJECT. This change fixes the 5154 support to allow references (namespace nodes) to be passed as arguments 5155 to control methods via the evaluate object interface. This is probably 5156 most useful for testing purposes, however. 5157 5158 Improved support for 32/64 bit physical addresses in printf()-like 5159 output. This change improves the support for physical addresses in printf 5160 debug statements and other output on both 32-bit and 64-bit hosts. It 5161 consistently outputs the appropriate number of bytes for each host. The 5162 %p specifier is unsatisfactory since it does not emit uniform output on 5163 all hosts/clib implementations (on some, leading zeros are not supported, 5164 leading to difficult-to-read output). 5165 5166 Example Code and Data Size: These are the sizes for the OS-independent 5167 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 5168 debug version of the code includes the debug output trace mechanism and 5169 has a much larger code and data size. 5170 5171 Current Release: 5172 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total 5173 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total 5174 Previous Release: 5175 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total 5176 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total 5177 5178 5179 2) iASL Compiler/Disassembler and Tools: 5180 5181 iASL: Fix a possible fault when using the Connection() operator. Fixes a 5182 problem if the parent Field definition for the Connection operator refers 5183 to an operation region that does not exist. ACPICA BZ 1064. 5184 5185 AcpiExec: Load of local test tables is now optional. The utility has the 5186 capability to load some various tables to test features of ACPICA. 5187 However, there are enough of them that the output of the utility became 5188 confusing. With this change, only the required local tables are displayed 5189 (RSDP, XSDT, etc.) along with the actual tables loaded via the command 5190 line specification. This makes the default output simler and easier to 5191 understand. The -el command line option restores the original behavior 5192 for testing purposes. 5193 5194 AcpiExec: Added support for overlapping operation regions. This change 5195 expands the simulation of operation regions by supporting regions that 5196 overlap within the given address space. Supports SystemMemory and 5197 SystemIO. ASLTS test suite updated also. David Box. ACPICA BZ 1031. 5198 5199 AcpiExec: Added region handler support for PCI_Config and EC spaces. This 5200 allows AcpiExec to simulate these address spaces, similar to the current 5201 support for SystemMemory and SystemIO. 5202 5203 Debugger: Added new command to read/write/compare all namespace objects. 5204 The command "test objects" will exercise the entire namespace by writing 5205 new values to each data object, and ensuring that the write was 5206 successful. The original value is then restored and verified. 5207 5208 Debugger: Added the "test predefined" command. This change makes this 5209 test public and puts it under the new "test" command. The test executes 5210 each and every predefined name within the current namespace. 5211 5212 5213 ---------------------------------------- 5214 18 December 2013. Summary of changes for version 20131218: 5215 5216 Global note: The ACPI 5.0A specification was released this month. There 5217 are no changes needed for ACPICA since this release of ACPI is an 5218 errata/clarification release. The specification is available at 5219 acpi.info. 5220 5221 5222 1) ACPICA kernel-resident subsystem: 5223 5224 Added validation of the XSDT root table if it is present. Some older 5225 platforms contain an XSDT that is ill-formed or otherwise invalid (such 5226 as containing some or all entries that are NULL pointers). This change 5227 adds a new function to validate the XSDT before actually using it. If the 5228 XSDT is found to be invalid, ACPICA will now automatically fall back to 5229 using the RSDT instead. Original implementation by Zhao Yakui. Ported to 5230 ACPICA and enhanced by Lv Zheng and Bob Moore. 5231 5232 Added a runtime option to ignore the XSDT and force the use of the RSDT. 5233 This change adds a runtime option that will force ACPICA to use the RSDT 5234 instead of the XSDT (AcpiGbl_DoNotUseXsdt). Although the ACPI spec 5235 requires that an XSDT be used instead of the RSDT, the XSDT has been 5236 found to be corrupt or ill-formed on some machines. Lv Zheng. 5237 5238 Added a runtime option to favor 32-bit FADT register addresses over the 5239 64-bit addresses. This change adds an option to favor 32-bit FADT 5240 addresses when there is a conflict between the 32-bit and 64-bit versions 5241 of the same register. The default behavior is to use the 64-bit version 5242 in accordance with the ACPI specification. This can now be overridden via 5243 the AcpiGbl_Use32BitFadtAddresses flag. ACPICA BZ 885. Lv Zheng. 5244 5245 During the change above, the internal "Convert FADT" and "Verify FADT" 5246 functions have been merged to simplify the code, making it easier to 5247 understand and maintain. ACPICA BZ 933. 5248 5249 Improve exception reporting and handling for GPE block installation. 5250 Return an actual status from AcpiEvGetGpeXruptBlock and don't clobber the 5251 status when exiting AcpiEvInstallGpeBlock. ACPICA BZ 1019. 5252 5253 Added helper macros to extract bus/segment numbers from the HEST table. 5254 This change adds two macros to extract the encoded bus and segment 5255 numbers from the HEST Bus field - ACPI_HEST_BUS and ACPI_HEST_SEGMENT. 5256 Betty Dall <betty.dall (a] hp.com> 5257 5258 Removed the unused ACPI_FREE_BUFFER macro. This macro is no longer used 5259 by ACPICA. It is not a public macro, so it should have no effect on 5260 existing OSV code. Lv Zheng. 5261 5262 Example Code and Data Size: These are the sizes for the OS-independent 5263 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 5264 debug version of the code includes the debug output trace mechanism and 5265 has a much larger code and data size. 5266 5267 Current Release: 5268 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total 5269 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total 5270 Previous Release: 5271 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total 5272 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total 5273 5274 5275 2) iASL Compiler/Disassembler and Tools: 5276 5277 Disassembler: Improved pathname support for emitted External() 5278 statements. This change adds full pathname support for external names 5279 that have been resolved internally by the inclusion of additional ACPI 5280 tables (via the iASL -e option). Without this change, the disassembler 5281 can emit multiple externals for the same object, or it become confused 5282 when the Scope() operator is used on an external object. Overall, greatly 5283 improves the ability to actually recompile the emitted ASL code when 5284 objects a referenced across multiple ACPI tables. Reported by Michael 5285 Tsirkin (mst (a] redhat.com). 5286 5287 Tests/ASLTS: Updated functional control suite to execute with no errors. 5288 David Box. Fixed several errors related to the testing of the interpreter 5289 slack mode. Lv Zheng. 5290 5291 iASL: Added support to detect names that are declared within a control 5292 method, but are unused (these are temporary names that are only valid 5293 during the time the method is executing). A remark is issued for these 5294 cases. ACPICA BZ 1022. 5295 5296 iASL: Added full support for the DBG2 table. Adds full disassembler, 5297 table compiler, and template generator support for the DBG2 table (Debug 5298 Port 2 table). 5299 5300 iASL: Added full support for the PCCT table, update the table definition. 5301 Updates the PCCT table definition in the actbl3.h header and adds table 5302 compiler and template generator support. 5303 5304 iASL: Added an option to emit only error messages (no warnings/remarks). 5305 The -ve option will enable only error messages, warnings and remarks are 5306 suppressed. This can simplify debugging when only the errors are 5307 important, such as when an ACPI table is disassembled and there are many 5308 warnings and remarks -- but only the actual errors are of real interest. 5309 5310 Example ACPICA code (source/tools/examples): Updated the example code so 5311 that it builds to an actual working program, not just example code. Added 5312 ACPI tables and execution of an example control method in the DSDT. Added 5313 makefile support for Unix generation. 5314 5315 5316 ---------------------------------------- 5317 15 November 2013. Summary of changes for version 20131115: 5318 5319 This release is available at https://acpica.org/downloads 5320 5321 5322 1) ACPICA kernel-resident subsystem: 5323 5324 Resource Manager: Fixed loop termination for the "get AML length" 5325 function. The loop previously had an error termination on a NULL resource 5326 pointer, which can never happen since the loop simply increments a valid 5327 resource pointer. This fix changes the loop to terminate with an error on 5328 an invalid end-of-buffer condition. The problem can be seen as an 5329 infinite loop by callers to AcpiSetCurrentResources with an invalid or 5330 corrupted resource descriptor, or a resource descriptor that is missing 5331 an END_TAG descriptor. Reported by Dan Carpenter 5332 <dan.carpenter (a] oracle.com>. Lv Zheng, Bob Moore. 5333 5334 Table unload and ACPICA termination: Delete all attached data objects 5335 during namespace node deletion. This fix updates namespace node deletion 5336 to delete the entire list of attached objects (attached via 5337 AcpiAttachObject) instead of just one of the attached items. ACPICA BZ 5338 1024. Tomasz Nowicki (tomasz.nowicki (a] linaro.org). 5339 5340 ACPICA termination: Added support to delete all objects attached to the 5341 root namespace node. This fix deletes any and all objects that have been 5342 attached to the root node via AcpiAttachData. Previously, none of these 5343 objects were deleted. Reported by Tomasz Nowicki. ACPICA BZ 1026. 5344 5345 Debug output: Do not emit the function nesting level for the in-kernel 5346 build. The nesting level is really only useful during a single-thread 5347 execution. Therefore, only enable this output for the AcpiExec utility. 5348 Also, only emit the thread ID when executing under AcpiExec (Context 5349 switches are still always detected and a message is emitted). ACPICA BZ 5350 972. 5351 5352 Example Code and Data Size: These are the sizes for the OS-independent 5353 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 5354 debug version of the code includes the debug output trace mechanism and 5355 has a much larger code and data size. 5356 5357 Current Release: 5358 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total 5359 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total 5360 Previous Release: 5361 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total 5362 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total 5363 5364 5365 2) iASL Compiler/Disassembler and Tools: 5366 5367 AcpiExec/Unix-OSL: Use <termios.h> instead of <termio.h>. This is the 5368 correct portable POSIX header for terminal control functions. 5369 5370 Disassembler: Fixed control method invocation issues related to the use 5371 of the CondRefOf() operator. The problem is seen in the disassembly where 5372 control method invocations may not be disassembled properly if the 5373 control method name has been used previously as an argument to CondRefOf. 5374 The solution is to not attempt to emit an external declaration for the 5375 CondRefOf target (it is not necessary in the first place). This prevents 5376 disassembler object type confusion. ACPICA BZ 988. 5377 5378 Unix Makefiles: Added an option to disable compiler optimizations and the 5379 _FORTIFY_SOURCE flag. Some older compilers have problems compiling ACPICA 5380 with optimizations (reportedly, gcc 4.4 for example). This change adds a 5381 command line option for make (NOOPT) that disables all compiler 5382 optimizations and the _FORTIFY_SOURCE compiler flag. The default 5383 optimization is -O2 with the _FORTIFY_SOURCE flag specified. ACPICA BZ 5384 1034. Lv Zheng, Bob Moore. 5385 5386 Tests/ASLTS: Added options to specify individual test cases and modes. 5387 This allows testers running aslts.sh to optionally specify individual 5388 test modes and test cases. Also added an option to disable the forced 5389 generation of the ACPICA tools from source if desired. Lv Zheng. 5390 5391 ---------------------------------------- 5392 27 September 2013. Summary of changes for version 20130927: 5393 5394 This release is available at https://acpica.org/downloads 5395 5396 5397 1) ACPICA kernel-resident subsystem: 5398 5399 Fixed a problem with store operations to reference objects. This change 5400 fixes a problem where a Store operation to an ArgX object that contained 5401 a 5402 reference to a field object did not complete the automatic dereference 5403 and 5404 then write to the actual field object. Instead, the object type of the 5405 field object was inadvertently changed to match the type of the source 5406 operand. The new behavior will actually write to the field object (buffer 5407 field or field unit), thus matching the correct ACPI-defined behavior. 5408 5409 Implemented support to allow the host to redefine individual OSL 5410 prototypes. This change enables the host to redefine OSL prototypes found 5411 in the acpiosxf.h file. This allows the host to implement OSL interfaces 5412 with a macro or inlined function. Further, it allows the host to add any 5413 additional required modifiers such as __iomem, __init, __exit, etc., as 5414 necessary on a per-interface basis. Enables maximum flexibility for the 5415 OSL interfaces. Lv Zheng. 5416 5417 Hardcoded the access width for the FADT-defined reset register. The ACPI 5418 specification requires the reset register width to be 8 bits. ACPICA now 5419 hardcodes the width to 8 and ignores the FADT width value. This provides 5420 compatibility with other ACPI implementations that have allowed BIOS code 5421 with bad register width values to go unnoticed. Matthew Garett, Bob 5422 Moore, 5423 Lv Zheng. 5424 5425 Changed the position/use of the ACPI_PRINTF_LIKE macro. This macro is 5426 used 5427 in the OSL header (acpiosxf). The change modifies the position of this 5428 macro in each instance where it is used (AcpiDebugPrint, etc.) to avoid 5429 build issues if the OSL defines the implementation of the interface to be 5430 an inline stub function. Lv Zheng. 5431 5432 Deployed a new macro ACPI_EXPORT_SYMBOL_INIT for the main ACPICA 5433 initialization interfaces. This change adds a new macro for the main init 5434 and terminate external interfaces in order to support hosts that require 5435 additional or different processing for these functions. Changed from 5436 ACPI_EXPORT_SYMBOL to ACPI_EXPORT_SYMBOL_INIT for these functions. Lv 5437 Zheng, Bob Moore. 5438 5439 Cleaned up the memory allocation macros for configurability. In the 5440 common 5441 case, the ACPI_ALLOCATE and related macros now resolve directly to their 5442 respective AcpiOs* OSL interfaces. Two options: 5443 1) The ACPI_ALLOCATE_ZEROED macro uses a simple local implementation by 5444 default, unless overridden by the USE_NATIVE_ALLOCATE_ZEROED define. 5445 2) For AcpiExec (and for debugging), the macros can optionally be 5446 resolved 5447 to the local ACPICA interfaces that track each allocation (local tracking 5448 is used to immediately detect memory leaks). 5449 Lv Zheng. 5450 5451 Simplified the configuration for ACPI_REDUCED_HARDWARE. Allows the kernel 5452 to predefine this macro to either TRUE or FALSE during the system build. 5453 5454 Replaced __FUNCTION_ with __func__ in the gcc-specific header. 5455 5456 Example Code and Data Size: These are the sizes for the OS-independent 5457 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 5458 debug version of the code includes the debug output trace mechanism and 5459 has a much larger code and data size. 5460 5461 Current Release: 5462 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total 5463 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total 5464 Previous Release: 5465 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total 5466 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total 5467 5468 5469 2) iASL Compiler/Disassembler and Tools: 5470 5471 iASL: Implemented wildcard support for the -e option. This simplifies use 5472 when there are many SSDTs that must be included to resolve external 5473 method 5474 declarations. ACPICA BZ 1041. Example: 5475 iasl -e ssdt*.dat -d dsdt.dat 5476 5477 AcpiExec: Add history/line-editing for Unix/Linux systems. This change 5478 adds a portable module that implements full history and limited line 5479 editing for Unix and Linux systems. It does not use readline() due to 5480 portability issues. Instead it uses the POSIX termio interface to put the 5481 terminal in raw input mode so that the various special keys can be 5482 trapped 5483 (such as up/down-arrow for history support and left/right-arrow for line 5484 editing). Uses the existing debugger history mechanism. ACPICA BZ 1036. 5485 5486 AcpiXtract: Add support to handle (ignore) "empty" lines containing only 5487 one or more spaces. This provides compatible with early or different 5488 versions of the AcpiDump utility. ACPICA BZ 1044. 5489 5490 AcpiDump: Do not ignore tables that contain only an ACPI table header. 5491 Apparently, some BIOSs create SSDTs that contain an ACPI table header but 5492 no other data. This change adds support to dump these tables. Any tables 5493 shorter than the length of an ACPI table header remain in error (an error 5494 message is emitted). Reported by Yi Li. 5495 5496 Debugger: Echo actual command along with the "unknown command" message. 5497 5498 ---------------------------------------- 5499 23 August 2013. Summary of changes for version 20130823: 5500 5501 1) ACPICA kernel-resident subsystem: 5502 5503 Implemented support for host-installed System Control Interrupt (SCI) 5504 handlers. Certain ACPI functionality requires the host to handle raw 5505 SCIs. For example, the "SCI Doorbell" that is defined for memory power 5506 state support requires the host device driver to handle SCIs to examine 5507 if the doorbell has been activated. Multiple SCI handlers can be 5508 installed to allow for future expansion. New external interfaces are 5509 AcpiInstallSciHandler, AcpiRemoveSciHandler; see the ACPICA reference for 5510 details. Lv Zheng, Bob Moore. ACPICA BZ 1032. 5511 5512 Operation region support: Never locally free the handler "context" 5513 pointer. This change removes some dangerous code that attempts to free 5514 the handler context pointer in some (rare) circumstances. The owner of 5515 the handler owns this pointer and the ACPICA code should never touch it. 5516 Although not seen to be an issue in any kernel, it did show up as a 5517 problem (fault) under AcpiExec. Also, set the internal storage field for 5518 the context pointer to zero when the region is deactivated, simply for 5519 sanity. David Box. ACPICA BZ 1039. 5520 5521 AcpiRead: On error, do not modify the return value target location. If an 5522 error happens in the middle of a split 32/32 64-bit I/O operation, do not 5523 modify the target of the return value pointer. Makes the code consistent 5524 with the rest of ACPICA. Bjorn Helgaas. 5525 5526 Example Code and Data Size: These are the sizes for the OS-independent 5527 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 5528 debug version of the code includes the debug output trace mechanism and 5529 has a much larger code and data size. 5530 5531 Current Release: 5532 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total 5533 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total 5534 Previous Release: 5535 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total 5536 Debug Version: 185.4K Code, 77.1K Data, 262.5K Total 5537 5538 5539 2) iASL Compiler/Disassembler and Tools: 5540 5541 AcpiDump: Implemented several new features and fixed some problems: 5542 1) Added support to dump the RSDP, RSDT, and XSDT tables. 5543 2) Added support for multiple table instances (SSDT, UEFI). 5544 3) Added option to dump "customized" (overridden) tables (-c). 5545 4) Fixed a problem where some table filenames were improperly 5546 constructed. 5547 5) Improved some error messages, removed some unnecessary messages. 5548 5549 iASL: Implemented additional support for disassembly of ACPI tables that 5550 contain invocations of external control methods. The -fe<file> option 5551 allows the import of a file that specifies the external methods along 5552 with the required number of arguments for each -- allowing for the 5553 correct disassembly of the table. This is a workaround for a limitation 5554 of AML code where the disassembler often cannot determine the number of 5555 arguments required for an external control method and generates incorrect 5556 ASL code. See the iASL reference for details. ACPICA BZ 1030. 5557 5558 Debugger: Implemented a new command (paths) that displays the full 5559 pathnames (namepaths) and object types of all objects in the namespace. 5560 This is an alternative to the namespace command. 5561 5562 Debugger: Implemented a new command (sci) that invokes the SCI dispatch 5563 mechanism and any installed handlers. 5564 5565 iASL: Fixed a possible segfault for "too many parent prefixes" condition. 5566 This can occur if there are too many parent prefixes in a namepath (for 5567 example, ^^^^^^PCI0.ECRD). ACPICA BZ 1035. 5568 5569 Application OSLs: Set the return value for the PCI read functions. These 5570 functions simply return AE_OK, but should set the return value to zero 5571 also. This change implements this. ACPICA BZ 1038. 5572 5573 Debugger: Prevent possible command line buffer overflow. Increase the 5574 size of a couple of the debugger line buffers, and ensure that overflow 5575 cannot happen. ACPICA BZ 1037. 5576 5577 iASL: Changed to abort immediately on serious errors during the parsing 5578 phase. Due to the nature of ASL, there is no point in attempting to 5579 compile these types of errors, and they typically end up causing a 5580 cascade of hundreds of errors which obscure the original problem. 5581 5582 ---------------------------------------- 5583 25 July 2013. Summary of changes for version 20130725: 5584 5585 1) ACPICA kernel-resident subsystem: 5586 5587 Fixed a problem with the DerefOf operator where references to FieldUnits 5588 and BufferFields incorrectly returned the parent object, not the actual 5589 value of the object. After this change, a dereference of a FieldUnit 5590 reference results in a read operation on the field to get the value, and 5591 likewise, the appropriate BufferField value is extracted from the target 5592 buffer. 5593 5594 Fixed a problem where the _WAK method could cause a fault under these 5595 circumstances: 1) Interpreter slack mode was not enabled, and 2) the _WAK 5596 method returned no value. The problem is rarely seen because most kernels 5597 run ACPICA in slack mode. 5598 5599 For the DerefOf operator, a fatal error now results if an attempt is made 5600 to dereference a reference (created by the Index operator) to a NULL 5601 package element. Provides compatibility with other ACPI implementations, 5602 and this behavior will be added to a future version of the ACPI 5603 specification. 5604 5605 The ACPI Power Management Timer (defined in the FADT) is now optional. 5606 This provides compatibility with other ACPI implementations and will 5607 appear in the next version of the ACPI specification. If there is no PM 5608 Timer on the platform, AcpiGetTimer returns AE_SUPPORT. An address of 5609 zero in the FADT indicates no PM timer. 5610 5611 Implemented a new interface for _OSI support, AcpiUpdateInterfaces. This 5612 allows the host to globally enable/disable all vendor strings, all 5613 feature strings, or both. Intended to be primarily used for debugging 5614 purposes only. Lv Zheng. 5615 5616 Expose the collected _OSI data to the host via a global variable. This 5617 data tracks the highest level vendor ID that has been invoked by the BIOS 5618 so that the host (and potentially ACPICA itself) can change behaviors 5619 based upon the age of the BIOS. 5620 5621 Example Code and Data Size: These are the sizes for the OS-independent 5622 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 5623 debug version of the code includes the debug output trace mechanism and 5624 has a much larger code and data size. 5625 5626 Current Release: 5627 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total 5628 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total 5629 Previous Release: 5630 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total 5631 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total 5632 5633 5634 2) iASL Compiler/Disassembler and Tools: 5635 5636 iASL: Created the following enhancements for the -so option (create 5637 offset table): 5638 1)Add offsets for the last nameseg in each namepath for every supported 5639 object type 5640 2)Add support for Processor, Device, Thermal Zone, and Scope objects 5641 3)Add the actual AML opcode for the parent object of every supported 5642 object type 5643 4)Add support for the ZERO/ONE/ONES AML opcodes for integer objects 5644 5645 Disassembler: Emit all unresolved external symbols in a single block. 5646 These are external references to control methods that could not be 5647 resolved, and thus, the disassembler had to make a guess at the number of 5648 arguments to parse. 5649 5650 iASL: The argument to the -T option (create table template) is now 5651 optional. If not specified, the default table is a DSDT, typically the 5652 most common case. 5653 5654 ---------------------------------------- 5655 26 June 2013. Summary of changes for version 20130626: 5656 5657 1) ACPICA kernel-resident subsystem: 5658 5659 Fixed an issue with runtime repair of the _CST object. Null or invalid 5660 elements were not always removed properly. Lv Zheng. 5661 5662 Removed an arbitrary restriction of 256 GPEs per GPE block (such as the 5663 FADT-defined GPE0 and GPE1). For GPE0, GPE1, and each GPE Block Device, 5664 the maximum number of GPEs is 1016. Use of multiple GPE block devices 5665 makes the system-wide number of GPEs essentially unlimited. 5666 5667 Example Code and Data Size: These are the sizes for the OS-independent 5668 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 5669 debug version of the code includes the debug output trace mechanism and 5670 has a much larger code and data size. 5671 5672 Current Release: 5673 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total 5674 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total 5675 Previous Release: 5676 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total 5677 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total 5678 5679 5680 2) iASL Compiler/Disassembler and Tools: 5681 5682 Portable AcpiDump: Implemented full support for the Linux and FreeBSD 5683 hosts. Now supports Linux, FreeBSD, and Windows. 5684 5685 Disassembler: Added some missing types for the HEST and EINJ tables: "Set 5686 Error Type With Address", "CMCI", "MCE", and "Flush Cacheline". 5687 5688 iASL/Preprocessor: Implemented full support for nested 5689 #if/#else/#elif/#endif blocks. Allows arbitrary depth of nested blocks. 5690 5691 Disassembler: Expanded maximum output string length to 64K. Was 256 bytes 5692 max. The original purpose of this constraint was to limit the amount of 5693 debug output. However, the string function in question (UtPrintString) is 5694 now used for the disassembler also, where 256 bytes is insufficient. 5695 Reported by RehabMan@GitHub. 5696 5697 iASL/DataTables: Fixed some problems and issues with compilation of DMAR 5698 tables. ACPICA BZ 999. Lv Zheng. 5699 5700 iASL: Fixed a couple of error exit issues that could result in a "Could 5701 not delete <file>" message during ASL compilation. 5702 5703 AcpiDump: Allow "FADT" and "MADT" as valid table signatures, even though 5704 the actual signatures for these tables are "FACP" and "APIC", 5705 respectively. 5706 5707 AcpiDump: Added support for multiple UEFI tables. Only SSDT and UEFI 5708 tables are allowed to have multiple instances. 5709 5710 ---------------------------------------- 5711 17 May 2013. Summary of changes for version 20130517: 5712 5713 1) ACPICA kernel-resident subsystem: 5714 5715 Fixed a regression introduced in version 20130328 for _INI methods. This 5716 change fixes a problem introduced in 20130328 where _INI methods are no 5717 longer executed properly because of a memory block that was not 5718 initialized correctly. ACPICA BZ 1016. Tomasz Nowicki 5719 <tomasz.nowicki (a] linaro.org>. 5720 5721 Fixed a possible problem with the new extended sleep registers in the 5722 ACPI 5723 5.0 FADT. Do not use these registers (even if populated) unless the HW- 5724 reduced bit is set in the FADT (as per the ACPI specification). ACPICA BZ 5725 1020. Lv Zheng. 5726 5727 Implemented return value repair code for _CST predefined objects: Sort 5728 the 5729 list and detect/remove invalid entries. ACPICA BZ 890. Lv Zheng. 5730 5731 Implemented a debug-only option to disable loading of SSDTs from the 5732 RSDT/XSDT during ACPICA initialization. This can be useful for debugging 5733 ACPI problems on some machines. Set AcpiGbl_DisableSsdtTableLoad in 5734 acglobal.h - ACPICA BZ 1005. Lv Zheng. 5735 5736 Fixed some issues in the ACPICA initialization and termination code: 5737 Tomasz Nowicki <tomasz.nowicki (a] linaro.org> 5738 1) Clear events initialized flag upon event component termination. ACPICA 5739 BZ 1013. 5740 2) Fixed a possible memory leak in GPE init error path. ACPICA BZ 1018. 5741 3) Delete global lock pending lock during termination. ACPICA BZ 1012. 5742 4) Clear debug buffer global on termination to prevent possible multiple 5743 delete. ACPICA BZ 1010. 5744 5745 Standardized all switch() blocks across the entire source base. After 5746 many 5747 years, different formatting for switch() had crept in. This change makes 5748 the formatting of every switch block identical. ACPICA BZ 997. Chao Guan. 5749 5750 Split some files to enhance ACPICA modularity and configurability: 5751 1) Split buffer dump routines into utilities/utbuffer.c 5752 2) Split internal error message routines into utilities/uterror.c 5753 3) Split table print utilities into tables/tbprint.c 5754 4) Split iASL command-line option processing into asloptions.c 5755 5756 Makefile enhancements: 5757 1) Support for all new files above. 5758 2) Abort make on errors from any subcomponent. Chao Guan. 5759 3) Add build support for Apple Mac OS X. Liang Qi. 5760 5761 Example Code and Data Size: These are the sizes for the OS-independent 5762 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 5763 debug version of the code includes the debug output trace mechanism and 5764 has a much larger code and data size. 5765 5766 Current Release: 5767 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total 5768 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total 5769 Previous Release: 5770 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total 5771 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total 5772 5773 5774 2) iASL Compiler/Disassembler and Tools: 5775 5776 New utility: Implemented an easily portable version of the acpidump 5777 utility to extract ACPI tables from the system (or a file) in an ASCII 5778 hex 5779 dump format. The top-level code implements the various command line 5780 options, file I/O, and table dump routines. To port to a new host, only 5781 three functions need to be implemented to get tables -- since this 5782 functionality is OS-dependent. See the tools/acpidump/apmain.c module and 5783 the ACPICA reference for porting instructions. ACPICA BZ 859. Notes: 5784 1) The Windows version obtains the ACPI tables from the Registry. 5785 2) The Linux version is under development. 5786 3) Other hosts - If an OS-dependent module is submitted, it will be 5787 distributed with ACPICA. 5788 5789 iASL: Fixed a regression for -D preprocessor option (define symbol). A 5790 restructuring/change to the initialization sequence caused this option to 5791 no longer work properly. 5792 5793 iASL: Implemented a mechanism to disable specific warnings and remarks. 5794 Adds a new command line option, "-vw <messageid> as well as "#pragma 5795 disable <messageid>". ACPICA BZ 989. Chao Guan, Bob Moore. 5796 5797 iASL: Fix for too-strict package object validation. The package object 5798 validation for return values from the predefined names is a bit too 5799 strict, it does not allow names references within the package (which will 5800 be resolved at runtime.) These types of references cannot be validated at 5801 compile time. This change ignores named references within package objects 5802 for names that return or define static packages. 5803 5804 Debugger: Fixed the 80-character command line limitation for the History 5805 command. Now allows lines of arbitrary length. ACPICA BZ 1000. Chao Guan. 5806 5807 iASL: Added control method and package support for the -so option 5808 (generates AML offset table for BIOS support.) 5809 5810 iASL: issue a remark if a non-serialized method creates named objects. If 5811 a thread blocks within the method for any reason, and another thread 5812 enters the method, the method will fail because an attempt will be made 5813 to 5814 create the same (named) object twice. In this case, issue a remark that 5815 the method should be marked serialized. NOTE: may become a warning later. 5816 ACPICA BZ 909. 5817 5818 ---------------------------------------- 5819 18 April 2013. Summary of changes for version 20130418: 5820 5821 1) ACPICA kernel-resident subsystem: 5822 5823 Fixed a possible buffer overrun during some rare but specific field unit 5824 read operations. This overrun can only happen if the DSDT version is 1 -- 5825 meaning that all AML integers are 32 bits -- and the field length is 5826 between 33 and 55 bits long. During the read, an internal buffer object 5827 is 5828 created for the field unit because the field is larger than an integer 5829 (32 5830 bits). However, in this case, the buffer will be incorrectly written 5831 beyond the end because the buffer length is less than the internal 5832 minimum 5833 of 64 bits (8 bytes) long. The buffer will be either 5, 6, or 7 bytes 5834 long, but a full 8 bytes will be written. 5835 5836 Updated the Embedded Controller "orphan" _REG method support. This refers 5837 to _REG methods under the EC device that have no corresponding operation 5838 region. This is allowed by the ACPI specification. This update removes a 5839 dependency on the existence an ECDT table. It will execute an orphan _REG 5840 method as long as the operation region handler for the EC is installed at 5841 the EC device node and not the namespace root. Rui Zhang (original 5842 update), Bob Moore (update/integrate). 5843 5844 Implemented run-time argument typechecking for all predefined ACPI names 5845 (_STA, _BIF, etc.) This change performs object typechecking on all 5846 incoming arguments for all predefined names executed via 5847 AcpiEvaluateObject. This ensures that ACPI-related device drivers are 5848 passing correct object types as well as the correct number of arguments 5849 (therefore identifying any issues immediately). Also, the ASL/namespace 5850 definition of the predefined name is checked against the ACPI 5851 specification for the proper argument count. Adds one new file, 5852 nsarguments.c 5853 5854 Changed an exception code for the ASL UnLoad() operator. Changed the 5855 exception code for the case where the input DdbHandle is invalid, from 5856 AE_BAD_PARAMETER to the more appropriate AE_AML_OPERAND_TYPE. 5857 5858 Unix/Linux makefiles: Removed the use of the -O2 optimization flag in the 5859 global makefile. The use of this flag causes compiler errors on earlier 5860 versions of GCC, so it has been removed for compatibility. 5861 5862 Miscellaneous cleanup: 5863 1) Removed some unused/obsolete macros 5864 2) Fixed a possible memory leak in the _OSI support 5865 3) Removed an unused variable in the predefined name support 5866 4) Windows OSL: remove obsolete reference to a memory list field 5867 5868 Example Code and Data Size: These are the sizes for the OS-independent 5869 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 5870 debug version of the code includes the debug output trace mechanism and 5871 has a much larger code and data size. 5872 5873 Current Release: 5874 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total 5875 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total 5876 Previous Release: 5877 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total 5878 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total 5879 5880 5881 2) iASL Compiler/Disassembler and Tools: 5882 5883 AcpiExec: Added installation of a handler for the SystemCMOS address 5884 space. This prevents control method abort if a method accesses this 5885 space. 5886 5887 AcpiExec: Added support for multiple EC devices, and now install EC 5888 operation region handler(s) at the actual EC device instead of the 5889 namespace root. This reflects the typical behavior of host operating 5890 systems. 5891 5892 AcpiExec: Updated to ensure that all operation region handlers are 5893 installed before the _REG methods are executed. This prevents a _REG 5894 method from aborting if it accesses an address space has no handler. 5895 AcpiExec installs a handler for every possible address space. 5896 5897 Debugger: Enhanced the "handlers" command to display non-root handlers. 5898 This change enhances the handlers command to display handlers associated 5899 with individual devices throughout the namespace, in addition to the 5900 currently supported display of handlers associated with the root 5901 namespace 5902 node. 5903 5904 ASL Test Suite: Several test suite errors have been identified and 5905 resolved, reducing the total error count during execution. Chao Guan. 5906 5907 ---------------------------------------- 5908 28 March 2013. Summary of changes for version 20130328: 5909 5910 1) ACPICA kernel-resident subsystem: 5911 5912 Fixed several possible race conditions with the internal object reference 5913 counting mechanism. Some of the external ACPICA interfaces update object 5914 reference counts without holding the interpreter or namespace lock. This 5915 change adds a spinlock to protect reference count updates on the internal 5916 ACPICA objects. Reported by and with assistance from Andriy Gapon 5917 (avg (a] FreeBSD.org). 5918 5919 FADT support: Removed an extraneous warning for very large GPE register 5920 sets. This change removes a size mismatch warning if the legacy length 5921 field for a GPE register set is larger than the 64-bit GAS structure can 5922 accommodate. GPE register sets can be larger than the 255-bit width 5923 limitation of the GAS structure. Linn Crosetto (linn (a] hp.com). 5924 5925 _OSI Support: handle any errors from AcpiOsAcquireMutex. Check for error 5926 return from this interface. Handles a possible timeout case if 5927 ACPI_WAIT_FOREVER is modified by the host to be a value less than 5928 "forever". Jung-uk Kim. 5929 5930 Predefined name support: Add allowed/required argument type information 5931 to 5932 the master predefined info table. This change adds the infrastructure to 5933 enable typechecking on incoming arguments for all predefined 5934 methods/objects. It does not actually contain the code that will fully 5935 utilize this information, this is still under development. Also condenses 5936 some duplicate code for the predefined names into a new module, 5937 utilities/utpredef.c 5938 5939 Example Code and Data Size: These are the sizes for the OS-independent 5940 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 5941 debug version of the code includes the debug output trace mechanism and 5942 has a much larger code and data size. 5943 5944 Previous Release: 5945 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total 5946 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total 5947 Current Release: 5948 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total 5949 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total 5950 5951 5952 2) iASL Compiler/Disassembler and Tools: 5953 5954 iASL: Implemented a new option to simplify the development of ACPI- 5955 related 5956 BIOS code. Adds support for a new "offset table" output file. The -so 5957 option will create a C table containing the AML table offsets of various 5958 named objects in the namespace so that BIOS code can modify them easily 5959 at 5960 boot time. This can simplify BIOS runtime code by eliminating expensive 5961 searches for "magic values", enhancing boot times and adding greater 5962 reliability. With assistance from Lee Hamel. 5963 5964 iASL: Allow additional predefined names to return zero-length packages. 5965 Now, all predefined names that are defined by the ACPI specification to 5966 return a "variable-length package of packages" are allowed to return a 5967 zero length top-level package. This allows the BIOS to tell the host that 5968 the requested feature is not supported, and supports existing BIOS/ASL 5969 code and practices. 5970 5971 iASL: Changed the "result not used" warning to an error. This is the case 5972 where an ASL operator is effectively a NOOP because the result of the 5973 operation is not stored anywhere. For example: 5974 Add (4, Local0) 5975 There is no target (missing 3rd argument), nor is the function return 5976 value used. This is potentially a very serious problem -- since the code 5977 was probably intended to do something, but for whatever reason, the value 5978 was not stored. Therefore, this issue has been upgraded from a warning to 5979 an error. 5980 5981 AcpiHelp: Added allowable/required argument types to the predefined names 5982 info display. This feature utilizes the recent update to the predefined 5983 names table (above). 5984 5985 ---------------------------------------- 5986 14 February 2013. Summary of changes for version 20130214: 5987 5988 1) ACPICA Kernel-resident Subsystem: 5989 5990 Fixed a possible regression on some hosts: Reinstated the safe return 5991 macros (return_ACPI_STATUS, etc.) that ensure that the argument is 5992 evaluated only once. Although these macros are not needed for the ACPICA 5993 code itself, they are often used by ACPI-related host device drivers 5994 where 5995 the safe feature may be necessary. 5996 5997 Fixed several issues related to the ACPI 5.0 reduced hardware support 5998 (SOC): Now ensure that if the platform declares itself as hardware- 5999 reduced 6000 via the FADT, the following functions become NOOPs (and always return 6001 AE_OK) because ACPI is always enabled by definition on these machines: 6002 AcpiEnable 6003 AcpiDisable 6004 AcpiHwGetMode 6005 AcpiHwSetMode 6006 6007 Dynamic Object Repair: Implemented additional runtime repairs for 6008 predefined name return values. Both of these repairs can simplify code in 6009 the related device drivers that invoke these methods: 6010 1) For the _STR and _MLS names, automatically repair/convert an ASCII 6011 string to a Unicode buffer. 6012 2) For the _CRS, _PRS, and _DMA names, return a resource descriptor with 6013 a 6014 lone end tag descriptor in the following cases: A Return(0) was executed, 6015 a null buffer was returned, or no object at all was returned (non-slack 6016 mode only). Adds a new file, nsconvert.c 6017 ACPICA BZ 998. Bob Moore, Lv Zheng. 6018 6019 Resource Manager: Added additional code to prevent possible infinite 6020 loops 6021 while traversing corrupted or ill-formed resource template buffers. Check 6022 for zero-length resource descriptors in all code that loops through 6023 resource templates (the length field is used to index through the 6024 template). This change also hardens the external AcpiWalkResources and 6025 AcpiWalkResourceBuffer interfaces. 6026 6027 Local Cache Manager: Enhanced the main data structure to eliminate an 6028 unnecessary mechanism to access the next object in the list. Actually 6029 provides a small performance enhancement for hosts that use the local 6030 ACPICA cache manager. Jung-uk Kim. 6031 6032 Example Code and Data Size: These are the sizes for the OS-independent 6033 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 6034 debug version of the code includes the debug output trace mechanism and 6035 has a much larger code and data size. 6036 6037 Previous Release: 6038 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total 6039 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total 6040 Current Release: 6041 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total 6042 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total 6043 6044 6045 2) iASL Compiler/Disassembler and Tools: 6046 6047 iASL/Disassembler: Fixed several issues with the definition of the ACPI 6048 5.0 RASF table (RAS Feature Table). This change incorporates late changes 6049 that were made to the ACPI 5.0 specification. 6050 6051 iASL/Disassembler: Added full support for the following new ACPI tables: 6052 1) The MTMR table (MID Timer Table) 6053 2) The VRTC table (Virtual Real Time Clock Table). 6054 Includes header file, disassembler, table compiler, and template support 6055 for both tables. 6056 6057 iASL: Implemented compile-time validation of package objects returned by 6058 predefined names. This new feature validates static package objects 6059 returned by the various predefined names defined to return packages. Both 6060 object types and package lengths are validated, for both parent packages 6061 and sub-packages, if any. The code is similar in structure and behavior 6062 to 6063 the runtime repair mechanism within the AML interpreter and uses the 6064 existing predefined name information table. Adds a new file, aslprepkg.c. 6065 ACPICA BZ 938. 6066 6067 iASL: Implemented auto-detection of binary ACPI tables for disassembly. 6068 This feature detects a binary file with a valid ACPI table header and 6069 invokes the disassembler automatically. Eliminates the need to 6070 specifically invoke the disassembler with the -d option. ACPICA BZ 862. 6071 6072 iASL/Disassembler: Added several warnings for the case where there are 6073 unresolved control methods during the disassembly. This can potentially 6074 cause errors when the output file is compiled, because the disassembler 6075 assumes zero method arguments in these cases (it cannot determine the 6076 actual number of arguments without resolution/definition of the method). 6077 6078 Debugger: Added support to display all resources with a single command. 6079 Invocation of the resources command with no arguments will now display 6080 all 6081 resources within the current namespace. 6082 6083 AcpiHelp: Added descriptive text for each ACPICA exception code displayed 6084 via the -e option. 6085 6086 ---------------------------------------- 6087 17 January 2013. Summary of changes for version 20130117: 6088 6089 1) ACPICA Kernel-resident Subsystem: 6090 6091 Updated the AcpiGetSleepTypeData interface: Allow the \_Sx methods to 6092 return either 1 or 2 integers. Although the ACPI spec defines the \_Sx 6093 objects to return a package containing one integer, most BIOS code 6094 returns 6095 two integers and the previous code reflects that. However, we also need 6096 to 6097 support BIOS code that actually implements to the ACPI spec, and this 6098 change reflects this. 6099 6100 Fixed two issues with the ACPI_DEBUG_PRINT macros: 6101 1) Added the ACPI_DO_WHILE macro to the main DEBUG_PRINT helper macro for 6102 C compilers that require this support. 6103 2) Renamed the internal ACPI_DEBUG macro to ACPI_DO_DEBUG_PRINT since 6104 ACPI_DEBUG is already used by many of the various hosts. 6105 6106 Updated all ACPICA copyrights and signons to 2013. Added the 2013 6107 copyright to all module headers and signons, including the standard Linux 6108 header. This affects virtually every file in the ACPICA core subsystem, 6109 iASL compiler, all ACPICA utilities, and the test suites. 6110 6111 Example Code and Data Size: These are the sizes for the OS-independent 6112 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 6113 debug version of the code includes the debug output trace mechanism and 6114 has a much larger code and data size. 6115 6116 Previous Release: 6117 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total 6118 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total 6119 Current Release: 6120 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total 6121 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total 6122 6123 6124 2) iASL Compiler/Disassembler and Tools: 6125 6126 Generic Unix OSL: Use a buffer to eliminate multiple vfprintf()s and 6127 prevent a possible fault on some hosts. Some C libraries modify the arg 6128 pointer parameter to vfprintf making it difficult to call it twice in the 6129 AcpiOsVprintf function. Use a local buffer to workaround this issue. This 6130 does not affect the Windows OSL since the Win C library does not modify 6131 the arg pointer. Chao Guan, Bob Moore. 6132 6133 iASL: Fixed a possible infinite loop when the maximum error count is 6134 reached. If an output file other than the .AML file is specified (such as 6135 a listing file), and the maximum number of errors is reached, do not 6136 attempt to flush data to the output file(s) as the compiler is aborting. 6137 This can cause an infinite loop as the max error count code essentially 6138 keeps calling itself. 6139 6140 iASL/Disassembler: Added an option (-in) to ignore NOOP 6141 opcodes/operators. 6142 Implemented for both the compiler and the disassembler. Often, the NOOP 6143 opcode is used as padding for packages that are changed dynamically by 6144 the 6145 BIOS. When disassembled and recompiled, these NOOPs will cause syntax 6146 errors. This option causes the disassembler to ignore all NOOP opcodes 6147 (0xA3), and it also causes the compiler to ignore all ASL source code 6148 NOOP 6149 statements as well. 6150 6151 Debugger: Enhanced the Sleep command to execute all sleep states. This 6152 change allows Sleep to be invoked with no arguments and causes the 6153 debugger to execute all of the sleep states, 0-5, automatically. 6154 6155 ---------------------------------------- 6156 20 December 2012. Summary of changes for version 20121220: 6157 6158 1) ACPICA Kernel-resident Subsystem: 6159 6160 Implemented a new interface, AcpiWalkResourceBuffer. This interface is an 6161 alternate entry point for AcpiWalkResources and improves the usability of 6162 the resource manager by accepting as input a buffer containing the output 6163 of either a _CRS, _PRS, or _AEI method. The key functionality is that the 6164 input buffer is not deleted by this interface so that it can be used by 6165 the host later. See the ACPICA reference for details. 6166 6167 Interpreter: Add a warning if a 64-bit constant appears in a 32-bit table 6168 (DSDT version < 2). The constant will be truncated and this warning 6169 reflects that behavior. 6170 6171 Resource Manager: Add support for the new ACPI 5.0 wake bit in the IRQ, 6172 ExtendedInterrupt, and GpioInt descriptors. This change adds support to 6173 both get and set the new wake bit in these descriptors, separately from 6174 the existing share bit. Reported by Aaron Lu. 6175 6176 Interpreter: Fix Store() when an implicit conversion is not possible. For 6177 example, in the cases such as a store of a string to an existing package 6178 object, implement the store as a CopyObject(). This is a small departure 6179 from the ACPI specification which states that the control method should 6180 be 6181 aborted in this case. However, the ASLTS suite depends on this behavior. 6182 6183 Performance improvement for the various FUNCTION_TRACE and DEBUG_PRINT 6184 macros: check if debug output is currently enabled as soon as possible to 6185 minimize performance impact if debug is in fact not enabled. 6186 6187 Source code restructuring: Cleanup to improve modularity. The following 6188 new files have been added: dbconvert.c, evhandler.c, nsprepkg.c, 6189 psopinfo.c, psobject.c, rsdumpinfo.c, utstring.c, and utownerid.c. 6190 Associated makefiles and project files have been updated. 6191 6192 Changed an exception code for LoadTable operator. For the case where one 6193 of the input strings is too long, change the returned exception code from 6194 AE_BAD_PARAMETER to AE_AML_STRING_LIMIT. 6195 6196 Fixed a possible memory leak in dispatcher error path. On error, delete 6197 the mutex object created during method mutex creation. Reported by 6198 tim.gardner (a] canonical.com. 6199 6200 Example Code and Data Size: These are the sizes for the OS-independent 6201 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 6202 debug version of the code includes the debug output trace mechanism and 6203 has a much larger code and data size. 6204 6205 Previous Release: 6206 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total 6207 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 6208 Current Release: 6209 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total 6210 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total 6211 6212 6213 2) iASL Compiler/Disassembler and Tools: 6214 6215 iASL: Disallow a method call as argument to the ObjectType ASL operator. 6216 This change tracks an errata to the ACPI 5.0 document. The AML grammar 6217 will not allow the interpreter to differentiate between a method and a 6218 method invocation when these are used as an argument to the ObjectType 6219 operator. The ACPI specification change is to disallow a method 6220 invocation 6221 (UserTerm) for the ObjectType operator. 6222 6223 Finish support for the TPM2 and CSRT tables in the headers, table 6224 compiler, and disassembler. 6225 6226 Unix user-space OSL: Fix a problem with WaitSemaphore where the timeout 6227 always expires immediately if the semaphore is not available. The 6228 original 6229 code was using a relative-time timeout, but sem_timedwait requires the 6230 use 6231 of an absolute time. 6232 6233 iASL: Added a remark if the Timer() operator is used within a 32-bit 6234 table. This operator returns a 64-bit time value that will be truncated 6235 within a 32-bit table. 6236 6237 iASL Source code restructuring: Cleanup to improve modularity. The 6238 following new files have been added: aslhex.c, aslxref.c, aslnamesp.c, 6239 aslmethod.c, and aslfileio.c. Associated makefiles and project files have 6240 been updated. 6241 6242 6243 ---------------------------------------- 6244 14 November 2012. Summary of changes for version 20121114: 6245 6246 1) ACPICA Kernel-resident Subsystem: 6247 6248 Implemented a performance enhancement for ACPI/AML Package objects. This 6249 change greatly increases the performance of Package objects within the 6250 interpreter. It changes the processing of reference counts for packages 6251 by 6252 optimizing for the most common case where the package sub-objects are 6253 either Integers, Strings, or Buffers. Increases the overall performance 6254 of 6255 the ASLTS test suite by 1.5X (Increases the Slack Mode performance by 6256 2X.) 6257 Chao Guan. ACPICA BZ 943. 6258 6259 Implemented and deployed common macros to extract flag bits from resource 6260 descriptors. Improves readability and maintainability of the code. Fixes 6261 a 6262 problem with the UART serial bus descriptor for the number of data bits 6263 flags (was incorrectly 2 bits, should be 3). 6264 6265 Enhanced the ACPI_GETx and ACPI_SETx macros. Improved the implementation 6266 of the macros and changed the SETx macros to the style of (destination, 6267 source). Also added ACPI_CASTx companion macros. Lv Zheng. 6268 6269 Example Code and Data Size: These are the sizes for the OS-independent 6270 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 6271 debug version of the code includes the debug output trace mechanism and 6272 has a much larger code and data size. 6273 6274 Previous Release: 6275 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total 6276 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 6277 Current Release: 6278 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total 6279 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 6280 6281 6282 2) iASL Compiler/Disassembler and Tools: 6283 6284 Disassembler: Added the new ACPI 5.0 interrupt sharing flags. This change 6285 adds the ShareAndWake and ExclusiveAndWake flags which were added to the 6286 Irq, Interrupt, and Gpio resource descriptors in ACPI 5.0. ACPICA BZ 986. 6287 6288 Disassembler: Fixed a problem with external declaration generation. Fixes 6289 a problem where an incorrect pathname could be generated for an external 6290 declaration if the original reference to the object includes leading 6291 carats (^). ACPICA BZ 984. 6292 6293 Debugger: Completed a major update for the Disassemble<method> command. 6294 This command was out-of-date and did not properly disassemble control 6295 methods that had any reasonable complexity. This fix brings the command 6296 up 6297 to the same level as the rest of the disassembler. Adds one new file, 6298 dmdeferred.c, which is existing code that is now common with the main 6299 disassembler and the debugger disassemble command. ACPICA MZ 978. 6300 6301 iASL: Moved the parser entry prototype to avoid a duplicate declaration. 6302 Newer versions of Bison emit this prototype, so moved the prototype out 6303 of 6304 the iASL header to where it is actually used in order to avoid a 6305 duplicate 6306 declaration. 6307 6308 iASL/Tools: Standardized use of the stream I/O functions: 6309 1) Ensure check for I/O error after every fopen/fread/fwrite 6310 2) Ensure proper order of size/count arguments for fread/fwrite 6311 3) Use test of (Actual != Requested) after all fwrite, and most fread 6312 4) Standardize I/O error messages 6313 Improves reliability and maintainability of the code. Bob Moore, Lv 6314 Zheng. 6315 ACPICA BZ 981. 6316 6317 Disassembler: Prevent duplicate External() statements. During generation 6318 of external statements, detect similar pathnames that are actually 6319 duplicates such as these: 6320 External (\ABCD) 6321 External (ABCD) 6322 Remove all leading '\' characters from pathnames during the external 6323 statement generation so that duplicates will be detected and tossed. 6324 ACPICA BZ 985. 6325 6326 Tools: Replace low-level I/O with stream I/O functions. Replace 6327 open/read/write/close with the stream I/O equivalents 6328 fopen/fread/fwrite/fclose for portability and performance. Lv Zheng, Bob 6329 Moore. 6330 6331 AcpiBin: Fix for the dump-to-hex function. Now correctly output the table 6332 name header so that AcpiXtract recognizes the output file/table. 6333 6334 iASL: Remove obsolete -2 option flag. Originally intended to force the 6335 compiler/disassembler into an ACPI 2.0 mode, this was never implemented 6336 and the entire concept is now obsolete. 6337 6338 ---------------------------------------- 6339 18 October 2012. Summary of changes for version 20121018: 6340 6341 6342 1) ACPICA Kernel-resident Subsystem: 6343 6344 Updated support for the ACPI 5.0 MPST table. Fixes some problems 6345 introduced by late changes to the table as it was added to the ACPI 5.0 6346 specification. Includes header, disassembler, and data table compiler 6347 support as well as a new version of the MPST template. 6348 6349 AcpiGetObjectInfo: Enhanced the device object support to include the ACPI 6350 5.0 _SUB method. Now calls _SUB in addition to the other PNP-related ID 6351 methods: _HID, _CID, and _UID. 6352 6353 Changed ACPI_DEVICE_ID to ACPI_PNP_DEVICE_ID. Also changed 6354 ACPI_DEVICE_ID_LIST to ACPI_PNP_DEVICE_ID_LIST. These changes prevent 6355 name collisions on hosts that reserve the *_DEVICE_ID (or *DeviceId) 6356 names for their various drivers. Affects the AcpiGetObjectInfo external 6357 interface, and other internal interfaces as well. 6358 6359 Added and deployed a new macro for ACPI_NAME management: ACPI_MOVE_NAME. 6360 This macro resolves to a simple 32-bit move of the 4-character ACPI_NAME 6361 on machines that support non-aligned transfers. Optimizes for this case 6362 rather than using a strncpy. With assistance from Zheng Lv. 6363 6364 Resource Manager: Small fix for buffer size calculation. Fixed a one byte 6365 error in the output buffer calculation. Feng Tang. ACPICA BZ 849. 6366 6367 Added a new debug print message for AML mutex objects that are force- 6368 released. At control method termination, any currently acquired mutex 6369 objects are force-released. Adds a new debug-only message for each one 6370 that is released. 6371 6372 Audited/updated all ACPICA return macros and the function debug depth 6373 counter: 1) Ensure that all functions that use the various TRACE macros 6374 also use the appropriate ACPICA return macros. 2) Ensure that all normal 6375 return statements surround the return expression (value) with parens to 6376 ensure consistency across the ACPICA code base. Guan Chao, Tang Feng, 6377 Zheng Lv, Bob Moore. ACPICA Bugzilla 972. 6378 6379 Global source code changes/maintenance: All extra lines at the start and 6380 end of each source file have been removed for consistency. Also, within 6381 comments, all new sentences start with a single space instead of a double 6382 space, again for consistency across the code base. 6383 6384 Example Code and Data Size: These are the sizes for the OS-independent 6385 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 6386 debug version of the code includes the debug output trace mechanism and 6387 has a much larger code and data size. 6388 6389 Previous Release: 6390 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total 6391 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total 6392 Current Release: 6393 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total 6394 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 6395 6396 6397 2) iASL Compiler/Disassembler and Tools: 6398 6399 AcpiExec: Improved the algorithm used for memory leak/corruption 6400 detection. Added some intelligence to the code that maintains the global 6401 list of allocated memory. The list is now ordered by allocated memory 6402 address, significantly improving performance. When running AcpiExec on 6403 the ASLTS test suite, speed improvements of 3X to 5X are seen, depending 6404 on the platform and/or the environment. Note, this performance 6405 enhancement affects the AcpiExec utility only, not the kernel-resident 6406 ACPICA code. 6407 6408 Enhanced error reporting for invalid AML opcodes and bad ACPI_NAMEs. For 6409 the disassembler, dump the 48 bytes surrounding the invalid opcode. Fix 6410 incorrect table offset reported for invalid opcodes. Report the original 6411 32-bit value for bad ACPI_NAMEs (as well as the repaired name.) 6412 6413 Disassembler: Enhanced the -vt option to emit the binary table data in 6414 hex format to assist with debugging. 6415 6416 Fixed a potential filename buffer overflow in osunixdir.c. Increased the 6417 size of file structure. Colin Ian King. 6418 6419 ---------------------------------------- 6420 13 September 2012. Summary of changes for version 20120913: 6421 6422 6423 1) ACPICA Kernel-resident Subsystem: 6424 6425 ACPI 5.0: Added two new notify types for the Hardware Error Notification 6426 Structure within the Hardware Error Source Table (HEST) table -- CMCI(5) 6427 and 6428 MCE(6). 6429 6430 Table Manager: Merged/removed duplicate code in the root table resize 6431 functions. One function is external, the other is internal. Lv Zheng, 6432 ACPICA 6433 BZ 846. 6434 6435 Makefiles: Completely removed the obsolete "Linux" makefiles under 6436 acpica/generate/linux. These makefiles are obsolete and have been 6437 replaced 6438 by 6439 the generic unix makefiles under acpica/generate/unix. 6440 6441 Makefiles: Ensure that binary files always copied properly. Minor rule 6442 change 6443 to ensure that the final binary output files are always copied up to the 6444 appropriate binary directory (bin32 or bin64.) 6445 6446 Example Code and Data Size: These are the sizes for the OS-independent 6447 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 6448 debug 6449 version of the code includes the debug output trace mechanism and has a 6450 much 6451 larger code and data size. 6452 6453 Previous Release: 6454 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total 6455 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total 6456 Current Release: 6457 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total 6458 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total 6459 6460 6461 2) iASL Compiler/Disassembler and Tools: 6462 6463 Disassembler: Fixed a possible fault during the disassembly of resource 6464 descriptors when a second parse is required because of the invocation of 6465 external control methods within the table. With assistance from 6466 adq (a] lidskialf.net. ACPICA BZ 976. 6467 6468 iASL: Fixed a namepath optimization problem. An error can occur if the 6469 parse 6470 node that contains the namepath to be optimized does not have a parent 6471 node 6472 that is a named object. This change fixes the problem. 6473 6474 iASL: Fixed a regression where the AML file is not deleted on errors. The 6475 AML 6476 output file should be deleted if there are any errors during the 6477 compiler. 6478 The 6479 only exception is if the -f (force output) option is used. ACPICA BZ 974. 6480 6481 iASL: Added a feature to automatically increase internal line buffer 6482 sizes. 6483 Via realloc(), automatically increase the internal line buffer sizes as 6484 necessary to support very long source code lines. The current version of 6485 the 6486 preprocessor requires a buffer long enough to contain full source code 6487 lines. 6488 This change increases the line buffer(s) if the input lines go beyond the 6489 current buffer size. This eliminates errors that occurred when a source 6490 code 6491 line was longer than the buffer. 6492 6493 iASL: Fixed a problem with constant folding in method declarations. The 6494 SyncLevel term is a ByteConstExpr, and incorrect code would be generated 6495 if a 6496 Type3 opcode was used. 6497 6498 Debugger: Improved command help support. For incorrect argument count, 6499 display 6500 full help for the command. For help command itself, allow an argument to 6501 specify a command. 6502 6503 Test Suites: Several bug fixes for the ASLTS suite reduces the number of 6504 errors during execution of the suite. Guan Chao. 6505 6506 ---------------------------------------- 6507 16 August 2012. Summary of changes for version 20120816: 6508 6509 6510 1) ACPICA Kernel-resident Subsystem: 6511 6512 Removed all use of the deprecated _GTS and _BFS predefined methods. The 6513 _GTS 6514 (Going To Sleep) and _BFS (Back From Sleep) methods are essentially 6515 deprecated and will probably be removed from the ACPI specification. 6516 Windows 6517 does not invoke them, and reportedly never will. The final nail in the 6518 coffin 6519 is that the ACPI specification states that these methods must be run with 6520 interrupts off, which is not going to happen in a kernel interpreter. 6521 Note: 6522 Linux has removed all use of the methods also. It was discovered that 6523 invoking these functions caused failures on some machines, probably 6524 because 6525 they were never tested since Windows does not call them. Affects two 6526 external 6527 interfaces, AcpiEnterSleepState and AcpiLeaveSleepStatePrep. Tang Feng. 6528 ACPICA BZ 969. 6529 6530 Implemented support for complex bit-packed buffers returned from the _PLD 6531 (Physical Location of Device) predefined method. Adds a new external 6532 interface, AcpiDecodePldBuffer that parses the buffer into a more usable 6533 C 6534 structure. Note: C Bitfields cannot be used for this type of predefined 6535 structure since the memory layout of individual bitfields is not defined 6536 by 6537 the C language. In addition, there are endian concerns where a compiler 6538 will 6539 change the bitfield ordering based on the machine type. The new ACPICA 6540 interface eliminates these issues, and should be called after _PLD is 6541 executed. ACPICA BZ 954. 6542 6543 Implemented a change to allow a scope change to root (via "Scope (\)") 6544 during 6545 execution of module-level ASL code (code that is executed at table load 6546 time.) Lin Ming. 6547 6548 Added the Windows8/Server2012 string for the _OSI method. This change 6549 adds 6550 a 6551 new _OSI string, "Windows 2012" for both Windows 8 and Windows Server 6552 2012. 6553 6554 Added header support for the new ACPI tables DBG2 (Debug Port Table Type 6555 2) 6556 and CSRT (Core System Resource Table). 6557 6558 Added struct header support for the _FDE, _GRT, _GTM, and _SRT predefined 6559 names. This simplifies access to the buffers returned by these predefined 6560 names. Adds a new file, include/acbuffer.h. ACPICA BZ 956. 6561 6562 GPE support: Removed an extraneous parameter from the various low-level 6563 internal GPE functions. Tang Feng. 6564 6565 Removed the linux makefiles from the unix packages. The generate/linux 6566 makefiles are obsolete and have been removed from the unix tarball 6567 release 6568 packages. The replacement makefiles are under generate/unix, and there is 6569 a 6570 top-level makefile under the main acpica directory. ACPICA BZ 967, 912. 6571 6572 Updates for Unix makefiles: 6573 1) Add -D_FORTIFY_SOURCE=2 for gcc generation. Arjan van de Ven. 6574 2) Update linker flags (move to end of command line) for AcpiExec 6575 utility. 6576 Guan Chao. 6577 6578 Split ACPICA initialization functions to new file, utxfinit.c. Split from 6579 utxface.c to improve modularity and reduce file size. 6580 6581 Example Code and Data Size: These are the sizes for the OS-independent 6582 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 6583 debug version of the code includes the debug output trace mechanism and 6584 has a 6585 much larger code and data size. 6586 6587 Previous Release: 6588 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total 6589 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total 6590 Current Release: 6591 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total 6592 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total 6593 6594 6595 2) iASL Compiler/Disassembler and Tools: 6596 6597 iASL: Fixed a problem with constant folding for fixed-length constant 6598 expressions. The constant-folding code was not being invoked for constant 6599 expressions that allow the use of type 3/4/5 opcodes to generate 6600 constants 6601 for expressions such as ByteConstExpr, WordConstExpr, etc. This could 6602 result 6603 in the generation of invalid AML bytecode. ACPICA BZ 970. 6604 6605 iASL: Fixed a generation issue on newer versions of Bison. Newer versions 6606 apparently automatically emit some of the necessary externals. This 6607 change 6608 handles these versions in order to eliminate generation warnings. 6609 6610 Disassembler: Added support to decode the DBG2 and CSRT ACPI tables. 6611 6612 Disassembler: Add support to decode _PLD buffers. The decoded buffer 6613 appears 6614 within comments in the output file. 6615 6616 Debugger: Fixed a regression with the "Threads" command where 6617 AE_BAD_PARAMETER was always returned. 6618 6619 ---------------------------------------- 6620 11 July 2012. Summary of changes for version 20120711: 6621 6622 1) ACPICA Kernel-resident Subsystem: 6623 6624 Fixed a possible fault in the return package object repair code. Fixes a 6625 problem that can occur when a lone package object is wrapped with an 6626 outer 6627 package object in order to force conformance to the ACPI specification. 6628 Can 6629 affect these predefined names: _ALR, _MLS, _PSS, _TRT, _TSS, _PRT, _HPX, 6630 _DLM, 6631 _CSD, _PSD, _TSD. 6632 6633 Removed code to disable/enable bus master arbitration (ARB_DIS bit in the 6634 PM2_CNT register) in the ACPICA sleep/wake interfaces. Management of the 6635 ARB_DIS bit must be implemented in the host-dependent C3 processor power 6636 state 6637 support. Note, ARB_DIS is obsolete and only applies to older chipsets, 6638 both 6639 Intel and other vendors. (for Intel: ICH4-M and earlier) 6640 6641 This change removes the code to disable/enable bus master arbitration 6642 during 6643 suspend/resume. Use of the ARB_DIS bit in the optional PM2_CNT register 6644 causes 6645 resume problems on some machines. The change has been in use for over 6646 seven 6647 years within Linux. 6648 6649 Implemented two new external interfaces to support host-directed dynamic 6650 ACPI 6651 table load and unload. They are intended to simplify the host 6652 implementation 6653 of hot-plug support: 6654 AcpiLoadTable: Load an SSDT from a buffer into the namespace. 6655 AcpiUnloadParentTable: Unload an SSDT via a named object owned by the 6656 table. 6657 See the ACPICA reference for additional details. Adds one new file, 6658 components/tables/tbxfload.c 6659 6660 Implemented and deployed two new interfaces for errors and warnings that 6661 are 6662 known to be caused by BIOS/firmware issues: 6663 AcpiBiosError: Prints "ACPI Firmware Error" message. 6664 AcpiBiosWarning: Prints "ACPI Firmware Warning" message. 6665 Deployed these new interfaces in the ACPICA Table Manager code for ACPI 6666 table 6667 and FADT errors. Additional deployment to be completed as appropriate in 6668 the 6669 future. The associated conditional macros are ACPI_BIOS_ERROR and 6670 ACPI_BIOS_WARNING. See the ACPICA reference for additional details. 6671 ACPICA 6672 BZ 6673 843. 6674 6675 Implicit notify support: ensure that no memory allocation occurs within a 6676 critical region. This fix moves a memory allocation outside of the time 6677 that a 6678 spinlock is held. Fixes issues on systems that do not allow this 6679 behavior. 6680 Jung-uk Kim. 6681 6682 Split exception code utilities and tables into a new file, 6683 utilities/utexcep.c 6684 6685 Example Code and Data Size: These are the sizes for the OS-independent 6686 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 6687 debug 6688 version of the code includes the debug output trace mechanism and has a 6689 much 6690 larger code and data size. 6691 6692 Previous Release: 6693 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total 6694 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total 6695 Current Release: 6696 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total 6697 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total 6698 6699 6700 2) iASL Compiler/Disassembler and Tools: 6701 6702 iASL: Fixed a parser problem for hosts where EOF is defined as -1 instead 6703 of 6704 0. Jung-uk Kim. 6705 6706 Debugger: Enhanced the "tables" command to emit additional information 6707 about 6708 the current set of ACPI tables, including the owner ID and flags decode. 6709 6710 Debugger: Reimplemented the "unload" command to use the new 6711 AcpiUnloadParentTable external interface. This command was disable 6712 previously 6713 due to need for an unload interface. 6714 6715 AcpiHelp: Added a new option to decode ACPICA exception codes. The -e 6716 option 6717 will decode 16-bit hex status codes (ACPI_STATUS) to name strings. 6718 6719 ---------------------------------------- 6720 20 June 2012. Summary of changes for version 20120620: 6721 6722 6723 1) ACPICA Kernel-resident Subsystem: 6724 6725 Implemented support to expand the "implicit notify" feature to allow 6726 multiple 6727 devices to be notified by a single GPE. This feature automatically 6728 generates a 6729 runtime device notification in the absence of a BIOS-provided GPE control 6730 method (_Lxx/_Exx) or a host-installed handler for the GPE. Implicit 6731 notify is 6732 provided by ACPICA for Windows compatibility, and is a workaround for 6733 BIOS 6734 AML 6735 code errors. See the description of the AcpiSetupGpeForWake interface in 6736 the 6737 APCICA reference. Bob Moore, Rafael Wysocki. ACPICA BZ 918. 6738 6739 Changed some comments and internal function names to simplify and ensure 6740 correctness of the Linux code translation. No functional changes. 6741 6742 Example Code and Data Size: These are the sizes for the OS-independent 6743 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 6744 debug 6745 version of the code includes the debug output trace mechanism and has a 6746 much 6747 larger code and data size. 6748 6749 Previous Release: 6750 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total 6751 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total 6752 Current Release: 6753 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total 6754 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total 6755 6756 6757 2) iASL Compiler/Disassembler and Tools: 6758 6759 Disassembler: Added support to emit short, commented descriptions for the 6760 ACPI 6761 predefined names in order to improve the readability of the disassembled 6762 output. ACPICA BZ 959. Changes include: 6763 1) Emit descriptions for all standard predefined names (_INI, _STA, 6764 _PRW, 6765 etc.) 6766 2) Emit generic descriptions for the special names (_Exx, _Qxx, etc.) 6767 3) Emit descriptions for the resource descriptor names (_MIN, _LEN, 6768 etc.) 6769 6770 AcpiSrc: Fixed several long-standing Linux code translation issues. 6771 Argument 6772 descriptions in function headers are now translated properly to lower 6773 case 6774 and 6775 underscores. ACPICA BZ 961. Also fixes translation problems such as 6776 these: 6777 (old -> new) 6778 i_aSL -> iASL 6779 00-7_f -> 00-7F 6780 16_k -> 16K 6781 local_fADT -> local_FADT 6782 execute_oSI -> execute_OSI 6783 6784 iASL: Fixed a problem where null bytes were inadvertently emitted into 6785 some 6786 listing files. 6787 6788 iASL: Added the existing debug options to the standard help screen. There 6789 are 6790 no longer two different help screens. ACPICA BZ 957. 6791 6792 AcpiHelp: Fixed some typos in the various predefined name descriptions. 6793 Also 6794 expand some of the descriptions where appropriate. 6795 6796 iASL: Fixed the -ot option (display compile times/statistics). Was not 6797 working 6798 properly for standard output; only worked for the debug file case. 6799 6800 ---------------------------------------- 6801 18 May 2012. Summary of changes for version 20120518: 6802 6803 6804 1) ACPICA Core Subsystem: 6805 6806 Added a new OSL interface, AcpiOsWaitEventsComplete. This interface is 6807 defined 6808 to block until asynchronous events such as notifies and GPEs have 6809 completed. 6810 Within ACPICA, it is only called before a notify or GPE handler is 6811 removed/uninstalled. It also may be useful for the host OS within related 6812 drivers such as the Embedded Controller driver. See the ACPICA reference 6813 for 6814 additional information. ACPICA BZ 868. 6815 6816 ACPI Tables: Added a new error message for a possible overflow failure 6817 during 6818 the conversion of FADT 32-bit legacy register addresses to internal 6819 common 6820 64- 6821 bit GAS structure representation. The GAS has a one-byte "bit length" 6822 field, 6823 thus limiting the register length to 255 bits. ACPICA BZ 953. 6824 6825 Example Code and Data Size: These are the sizes for the OS-independent 6826 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 6827 debug 6828 version of the code includes the debug output trace mechanism and has a 6829 much 6830 larger code and data size. 6831 6832 Previous Release: 6833 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 6834 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total 6835 Current Release: 6836 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total 6837 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total 6838 6839 6840 2) iASL Compiler/Disassembler and Tools: 6841 6842 iASL: Added the ACPI 5.0 "PCC" keyword for use in the Register() ASL 6843 macro. 6844 This keyword was added late in the ACPI 5.0 release cycle and was not 6845 implemented until now. 6846 6847 Disassembler: Added support for Operation Region externals. Adds missing 6848 support for operation regions that are defined in another table, and 6849 referenced locally via a Field or BankField ASL operator. Now generates 6850 the 6851 correct External statement. 6852 6853 Disassembler: Several additional fixes for the External() statement 6854 generation 6855 related to some ASL operators. Also, order the External() statements 6856 alphabetically in the disassembler output. Fixes the External() 6857 generation 6858 for 6859 the Create* field, Alias, and Scope operators: 6860 1) Create* buffer field operators - fix type mismatch warning on 6861 disassembly 6862 2) Alias - implement missing External support 6863 3) Scope - fix to make sure all necessary externals are emitted. 6864 6865 iASL: Improved pathname support. For include files, merge the prefix 6866 pathname 6867 with the file pathname and eliminate unnecessary components. Convert 6868 backslashes in all pathnames to forward slashes, for readability. Include 6869 file 6870 pathname changes affect both #include and Include() type operators. 6871 6872 iASL/DTC/Preprocessor: Gracefully handle early EOF. Handle an EOF at the 6873 end 6874 of a valid line by inserting a newline and then returning the EOF during 6875 the 6876 next call to GetNextLine. Prevents the line from being ignored due to EOF 6877 condition. 6878 6879 iASL: Implemented some changes to enhance the IDE support (-vi option.) 6880 Error 6881 and Warning messages are now correctly recognized for both the source 6882 code 6883 browser and the global error and warning counts. 6884 6885 ---------------------------------------- 6886 20 April 2012. Summary of changes for version 20120420: 6887 6888 6889 1) ACPICA Core Subsystem: 6890 6891 Implemented support for multiple notify handlers. This change adds 6892 support 6893 to 6894 allow multiple system and device notify handlers on Device, Thermal Zone, 6895 and 6896 Processor objects. This can simplify the host OS notification 6897 implementation. 6898 Also re-worked and restructured the entire notify support code to 6899 simplify 6900 handler installation, handler removal, notify event queuing, and notify 6901 dispatch to handler(s). Note: there can still only be two global notify 6902 handlers - one for system notifies and one for device notifies. There are 6903 no 6904 changes to the existing handler install/remove interfaces. Lin Ming, Bob 6905 Moore, Rafael Wysocki. 6906 6907 Fixed a regression in the package repair code where the object reference 6908 count was calculated incorrectly. Regression was introduced in the commit 6909 "Support to add Package wrappers". 6910 6911 Fixed a couple possible memory leaks in the AML parser, in the error 6912 recovery 6913 path. Jesper Juhl, Lin Ming. 6914 6915 Example Code and Data Size: These are the sizes for the OS-independent 6916 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 6917 debug version of the code includes the debug output trace mechanism and 6918 has a 6919 much larger code and data size. 6920 6921 Previous Release: 6922 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 6923 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 6924 Current Release: 6925 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 6926 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total 6927 6928 6929 2) iASL Compiler/Disassembler and Tools: 6930 6931 iASL: Fixed a problem with the resource descriptor support where the 6932 length 6933 of the StartDependentFn and StartDependentFnNoPrio descriptors were not 6934 included in cumulative descriptor offset, resulting in incorrect values 6935 for 6936 resource tags within resource descriptors appearing after a 6937 StartDependent* 6938 descriptor. Reported by Petr Vandrovec. ACPICA BZ 949. 6939 6940 iASL and Preprocessor: Implemented full support for the #line directive 6941 to 6942 correctly track original source file line numbers through the .i 6943 preprocessor 6944 output file - for error and warning messages. 6945 6946 iASL: Expand the allowable byte constants for address space IDs. 6947 Previously, 6948 the allowable range was 0x80-0xFF (user-defined spaces), now the range is 6949 0x0A-0xFF to allow for custom and new IDs without changing the compiler. 6950 6951 iASL: Add option to treat all warnings as errors (-we). ACPICA BZ 948. 6952 6953 iASL: Add option to completely disable the preprocessor (-Pn). 6954 6955 iASL: Now emit all error/warning messages to standard error (stderr) by 6956 default (instead of the previous stdout). 6957 6958 ASL Test Suite (ASLTS): Reduce iASL warnings due to use of Switch(). 6959 Update 6960 for resource descriptor offset fix above. Update/cleanup error output 6961 routines. Enable and send iASL errors/warnings to an error logfile 6962 (error.txt). Send all other iASL output to a logfile (compiler.txt). 6963 Fixed 6964 several extraneous "unrecognized operator" messages. 6965 6966 ---------------------------------------- 6967 20 March 2012. Summary of changes for version 20120320: 6968 6969 6970 1) ACPICA Core Subsystem: 6971 6972 Enhanced the sleep/wake interfaces to optionally execute the _GTS method 6973 (Going To Sleep) and the _BFS method (Back From Sleep). Windows 6974 apparently 6975 does not execute these methods, and therefore these methods are often 6976 untested. It has been seen on some systems where the execution of these 6977 methods causes errors and also prevents the machine from entering S5. It 6978 is 6979 therefore suggested that host operating systems do not execute these 6980 methods 6981 by default. In the future, perhaps these methods can be optionally 6982 executed 6983 based on the age of the system and/or what is the newest version of 6984 Windows 6985 that the BIOS asks for via _OSI. Changed interfaces: AcpiEnterSleepState 6986 and 6987 AcpileaveSleepStatePrep. See the ACPICA reference and Linux BZ 13041. Lin 6988 Ming. 6989 6990 Fixed a problem where the length of the local/common FADT was set too 6991 early. 6992 The local FADT table length cannot be set to the common length until the 6993 original length has been examined. There is code that checks the table 6994 length 6995 and sets various fields appropriately. This can affect older machines 6996 with 6997 early FADT versions. For example, this can cause inadvertent writes to 6998 the 6999 CST_CNT register. Julian Anastasov. 7000 7001 Fixed a mapping issue related to a physical table override. Use the 7002 deferred 7003 mapping mechanism for tables loaded via the physical override OSL 7004 interface. 7005 This allows for early mapping before the virtual memory manager is 7006 available. 7007 Thomas Renninger, Bob Moore. 7008 7009 Enhanced the automatic return-object repair code: Repair a common problem 7010 with 7011 predefined methods that are defined to return a variable-length Package 7012 of 7013 sub-objects. If there is only one sub-object, some BIOS ASL code 7014 mistakenly 7015 simply returns the single object instead of a Package with one sub- 7016 object. 7017 This new support will repair this error by wrapping a Package object 7018 around 7019 the original object, creating the correct and expected Package with one 7020 sub- 7021 object. Names that can be repaired in this manner include: _ALR, _CSD, 7022 _HPX, 7023 _MLS, _PLD, _PRT, _PSS, _TRT, _TSS, _BCL, _DOD, _FIX, and _Sx. ACPICA BZ 7024 939. 7025 7026 Changed the exception code returned for invalid ACPI paths passed as 7027 parameters to external interfaces such as AcpiEvaluateObject. Was 7028 AE_BAD_PARAMETER, now is the more sensible AE_BAD_PATHNAME. 7029 7030 Example Code and Data Size: These are the sizes for the OS-independent 7031 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 7032 debug 7033 version of the code includes the debug output trace mechanism and has a 7034 much 7035 larger code and data size. 7036 7037 Previous Release: 7038 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total 7039 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 7040 Current Release: 7041 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 7042 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 7043 7044 7045 2) iASL Compiler/Disassembler and Tools: 7046 7047 iASL: Added the infrastructure and initial implementation of a integrated 7048 C- 7049 like preprocessor. This will simplify BIOS development process by 7050 eliminating 7051 the need for a separate preprocessing step during builds. On Windows, it 7052 also 7053 eliminates the need to install a separate C compiler. ACPICA BZ 761. Some 7054 features including full #define() macro support are still under 7055 development. 7056 These preprocessor directives are supported: 7057 #define 7058 #elif 7059 #else 7060 #endif 7061 #error 7062 #if 7063 #ifdef 7064 #ifndef 7065 #include 7066 #pragma message 7067 #undef 7068 #warning 7069 In addition, these new command line options are supported: 7070 -D <symbol> Define symbol for preprocessor use 7071 -li Create preprocessed output file (*.i) 7072 -P Preprocess only and create preprocessor output file (*.i) 7073 7074 Table Compiler: Fixed a problem where the equals operator within an 7075 expression 7076 did not work properly. 7077 7078 Updated iASL to use the current versions of Bison/Flex. Updated the 7079 Windows 7080 project file to invoke these tools from the standard location. ACPICA BZ 7081 904. 7082 Versions supported: 7083 Flex for Windows: V2.5.4 7084 Bison for Windows: V2.4.1 7085 7086 ---------------------------------------- 7087 15 February 2012. Summary of changes for version 20120215: 7088 7089 7090 1) ACPICA Core Subsystem: 7091 7092 There have been some major changes to the sleep/wake support code, as 7093 described below (a - e). 7094 7095 a) The AcpiLeaveSleepState has been split into two interfaces, similar to 7096 AcpiEnterSleepStatePrep and AcpiEnterSleepState. The new interface is 7097 AcpiLeaveSleepStatePrep. This allows the host to perform actions between 7098 the 7099 time the _BFS method is called and the _WAK method is called. NOTE: all 7100 hosts 7101 must update their wake/resume code or else sleep/wake will not work 7102 properly. 7103 Rafael Wysocki. 7104 7105 b) In AcpiLeaveSleepState, now enable all runtime GPEs before calling the 7106 _WAK 7107 method. Some machines require that the GPEs are enabled before the _WAK 7108 method 7109 is executed. Thomas Renninger. 7110 7111 c) In AcpiLeaveSleepState, now always clear the WAK_STS (wake status) 7112 bit. 7113 Some BIOS code assumes that WAK_STS will be cleared on resume and use it 7114 to 7115 determine whether the system is rebooting or resuming. Matthew Garrett. 7116 7117 d) Move the invocations of _GTS (Going To Sleep) and _BFS (Back From 7118 Sleep) to 7119 match the ACPI specification requirement. Rafael Wysocki. 7120 7121 e) Implemented full support for the ACPI 5.0 SleepStatus and SleepControl 7122 registers within the V5 FADT. This support adds two new files: 7123 hardware/hwesleep.c implements the support for the new registers. Moved 7124 all 7125 sleep/wake external interfaces to hardware/hwxfsleep.c. 7126 7127 7128 Added a new OSL interface for ACPI table overrides, 7129 AcpiOsPhysicalTableOverride. This interface allows the host to override a 7130 table via a physical address, instead of the logical address required by 7131 AcpiOsTableOverride. This simplifies the host implementation. Initial 7132 implementation by Thomas Renninger. The ACPICA implementation creates a 7133 single 7134 shared function for table overrides that attempts both a logical and a 7135 physical override. 7136 7137 Expanded the OSL memory read/write interfaces to 64-bit data 7138 (AcpiOsReadMemory, AcpiOsWriteMemory.) This enables full 64-bit memory 7139 transfer support for GAS register structures passed to AcpiRead and 7140 AcpiWrite. 7141 7142 Implemented the ACPI_REDUCED_HARDWARE option to allow the creation of a 7143 custom 7144 build of ACPICA that supports only the ACPI 5.0 reduced hardware (SoC) 7145 model. 7146 See the ACPICA reference for details. ACPICA BZ 942. This option removes 7147 about 7148 10% of the code and 5% of the static data, and the following hardware 7149 ACPI 7150 features become unavailable: 7151 PM Event and Control registers 7152 SCI interrupt (and handler) 7153 Fixed Events 7154 General Purpose Events (GPEs) 7155 Global Lock 7156 ACPI PM timer 7157 7158 Updated the unix tarball directory structure to match the ACPICA git 7159 source 7160 tree. This ensures that the generic unix makefiles work properly (in 7161 generate/unix). Also updated the Linux makefiles to match. ACPICA BZ 7162 867. 7163 7164 Updated the return value of the _REV predefined method to integer value 5 7165 to 7166 reflect ACPI 5.0 support. 7167 7168 Moved the external ACPI PM timer interface prototypes to the public 7169 acpixf.h 7170 file where they belong. 7171 7172 Example Code and Data Size: These are the sizes for the OS-independent 7173 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 7174 debug 7175 version of the code includes the debug output trace mechanism and has a 7176 much 7177 larger code and data size. 7178 7179 Previous Release: 7180 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total 7181 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total 7182 Current Release: 7183 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total 7184 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 7185 7186 7187 2) iASL Compiler/Disassembler and Tools: 7188 7189 Disassembler: Fixed a problem with the new ACPI 5.0 serial resource 7190 descriptors (I2C, SPI, UART) where the resource produce/consumer bit was 7191 incorrectly displayed. 7192 7193 AcpiHelp: Add display of ACPI/PNP device IDs that are defined in the ACPI 7194 specification. 7195 7196 ---------------------------------------- 7197 11 January 2012. Summary of changes for version 20120111: 7198 7199 7200 1) ACPICA Core Subsystem: 7201 7202 Implemented a new mechanism to allow host device drivers to check for 7203 address 7204 range conflicts with ACPI Operation Regions. Both SystemMemory and 7205 SystemIO 7206 address spaces are supported. A new external interface, 7207 AcpiCheckAddressRange, 7208 allows drivers to check an address range against the ACPI namespace. See 7209 the 7210 ACPICA reference for additional details. Adds one new file, 7211 utilities/utaddress.c. Lin Ming, Bob Moore. 7212 7213 Fixed several issues with the ACPI 5.0 FADT support: Add the sleep 7214 Control 7215 and 7216 Status registers, update the ACPI 5.0 flags, and update internal data 7217 structures to handle an FADT larger than 256 bytes. The size of the ACPI 7218 5.0 7219 FADT is 268 bytes. 7220 7221 Updated all ACPICA copyrights and signons to 2012. Added the 2012 7222 copyright to 7223 all module headers and signons, including the standard Linux header. This 7224 affects virtually every file in the ACPICA core subsystem, iASL compiler, 7225 and 7226 all ACPICA utilities. 7227 7228 Example Code and Data Size: These are the sizes for the OS-independent 7229 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 7230 debug 7231 version of the code includes the debug output trace mechanism and has a 7232 much 7233 larger code and data size. 7234 7235 Previous Release: 7236 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total 7237 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total 7238 Current Release: 7239 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total 7240 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total 7241 7242 7243 2) iASL Compiler/Disassembler and Tools: 7244 7245 Disassembler: fixed a problem with the automatic resource tag generation 7246 support. Fixes a problem where the resource tags are inadvertently not 7247 constructed if the table being disassembled contains external references 7248 to 7249 control methods. Moved the actual construction of the tags to after the 7250 final 7251 namespace is constructed (after 2nd parse is invoked due to external 7252 control 7253 method references.) ACPICA BZ 941. 7254 7255 Table Compiler: Make all "generic" operators caseless. These are the 7256 operators 7257 like UINT8, String, etc. Making these caseless improves ease-of-use. 7258 ACPICA BZ 7259 934. 7260 7261 ---------------------------------------- 7262 23 November 2011. Summary of changes for version 20111123: 7263 7264 0) ACPI 5.0 Support: 7265 7266 This release contains full support for the ACPI 5.0 specification, as 7267 summarized below. 7268 7269 Reduced Hardware Support: 7270 ------------------------- 7271 7272 This support allows for ACPI systems without the usual ACPI hardware. 7273 This 7274 support is enabled by a flag in the revision 5 FADT. If it is set, ACPICA 7275 will 7276 not attempt to initialize or use any of the usual ACPI hardware. Note, 7277 when 7278 this flag is set, all of the following ACPI hardware is assumed to be not 7279 present and is not initialized or accessed: 7280 7281 General Purpose Events (GPEs) 7282 Fixed Events (PM1a/PM1b and PM Control) 7283 Power Management Timer and Console Buttons (power/sleep) 7284 Real-time Clock Alarm 7285 Global Lock 7286 System Control Interrupt (SCI) 7287 The FACS is assumed to be non-existent 7288 7289 ACPI Tables: 7290 ------------ 7291 7292 All new tables and updates to existing tables are fully supported in the 7293 ACPICA headers (for use by device drivers), the disassembler, and the 7294 iASL 7295 Data Table Compiler. ACPI 5.0 defines these new tables: 7296 7297 BGRT /* Boot Graphics Resource Table */ 7298 DRTM /* Dynamic Root of Trust for Measurement table */ 7299 FPDT /* Firmware Performance Data Table */ 7300 GTDT /* Generic Timer Description Table */ 7301 MPST /* Memory Power State Table */ 7302 PCCT /* Platform Communications Channel Table */ 7303 PMTT /* Platform Memory Topology Table */ 7304 RASF /* RAS Feature table */ 7305 7306 Operation Regions/SpaceIDs: 7307 --------------------------- 7308 7309 All new operation regions are fully supported by the iASL compiler, the 7310 disassembler, and the ACPICA runtime code (for dispatch to region 7311 handlers.) 7312 The new operation region Space IDs are: 7313 7314 GeneralPurposeIo 7315 GenericSerialBus 7316 7317 Resource Descriptors: 7318 --------------------- 7319 7320 All new ASL resource descriptors are fully supported by the iASL 7321 compiler, 7322 the 7323 ASL/AML disassembler, and the ACPICA runtime Resource Manager code 7324 (including 7325 all new predefined resource tags). New descriptors are: 7326 7327 FixedDma 7328 GpioIo 7329 GpioInt 7330 I2cSerialBus 7331 SpiSerialBus 7332 UartSerialBus 7333 7334 ASL/AML Operators, New and Modified: 7335 ------------------------------------ 7336 7337 One new operator is added, the Connection operator, which is used to 7338 associate 7339 a GeneralPurposeIo or GenericSerialBus resource descriptor with 7340 individual 7341 field objects within an operation region. Several new protocols are 7342 associated 7343 with the AccessAs operator. All are fully supported by the iASL compiler, 7344 disassembler, and runtime ACPICA AML interpreter: 7345 7346 Connection // Declare Field Connection 7347 attributes 7348 AccessAs: AttribBytes (n) // Read/Write N-Bytes Protocol 7349 AccessAs: AttribRawBytes (n) // Raw Read/Write N-Bytes 7350 Protocol 7351 AccessAs: AttribRawProcessBytes (n) // Raw Process Call Protocol 7352 RawDataBuffer // Data type for Vendor Data 7353 fields 7354 7355 Predefined ASL/AML Objects: 7356 --------------------------- 7357 7358 All new predefined objects/control-methods are supported by the iASL 7359 compiler 7360 and the ACPICA runtime validation/repair (arguments and return values.) 7361 New 7362 predefined names include the following: 7363 7364 Standard Predefined Names (Objects or Control Methods): 7365 _AEI, _CLS, _CPC, _CWS, _DEP, 7366 _DLM, _EVT, _GCP, _CRT, _GWS, 7367 _HRV, _PRE, _PSE, _SRT, _SUB. 7368 7369 Resource Tags (Names used to access individual fields within resource 7370 descriptors): 7371 _DBT, _DPL, _DRS, _END, _FLC, 7372 _IOR, _LIN, _MOD, _PAR, _PHA, 7373 _PIN, _PPI, _POL, _RXL, _SLV, 7374 _SPE, _STB, _TXL, _VEN. 7375 7376 ACPICA External Interfaces: 7377 --------------------------- 7378 7379 Several new interfaces have been defined for use by ACPI-related device 7380 drivers and other host OS services: 7381 7382 AcpiAcquireMutex and AcpiReleaseMutex: These interfaces allow the host OS 7383 to 7384 acquire and release AML mutexes that are defined in the DSDT/SSDT tables 7385 provided by the BIOS. They are intended to be used in conjunction with 7386 the 7387 ACPI 5.0 _DLM (Device Lock Method) in order to provide transaction-level 7388 mutual exclusion with the AML code/interpreter. 7389 7390 AcpiGetEventResources: Returns the (formatted) resource descriptors as 7391 defined 7392 by the ACPI 5.0 _AEI object (ACPI Event Information). This object 7393 provides 7394 resource descriptors associated with hardware-reduced platform events, 7395 similar 7396 to the AcpiGetCurrentResources interface. 7397 7398 Operation Region Handlers: For General Purpose IO and Generic Serial Bus 7399 operation regions, information about the Connection() object and any 7400 optional 7401 length information is passed to the region handler within the Context 7402 parameter. 7403 7404 AcpiBufferToResource: This interface converts a raw AML buffer containing 7405 a 7406 resource template or resource descriptor to the ACPI_RESOURCE internal 7407 format 7408 suitable for use by device drivers. Can be used by an operation region 7409 handler 7410 to convert the Connection() buffer object into a ACPI_RESOURCE. 7411 7412 Miscellaneous/Tools/TestSuites: 7413 ------------------------------- 7414 7415 Support for extended _HID names (Four alpha characters instead of three). 7416 Support for ACPI 5.0 features in the AcpiExec and AcpiHelp utilities. 7417 Support for ACPI 5.0 features in the ASLTS test suite. 7418 Fully updated documentation (ACPICA and iASL reference documents.) 7419 7420 ACPI Table Definition Language: 7421 ------------------------------- 7422 7423 Support for this language was implemented and released as a subsystem of 7424 the 7425 iASL compiler in 2010. (See the iASL compiler User Guide.) 7426 7427 7428 Non-ACPI 5.0 changes for this release: 7429 -------------------------------------- 7430 7431 1) ACPICA Core Subsystem: 7432 7433 Fix a problem with operation region declarations where a failure can 7434 occur 7435 if 7436 the region name and an argument that evaluates to an object (such as the 7437 region address) are in different namespace scopes. Lin Ming, ACPICA BZ 7438 937. 7439 7440 Do not abort an ACPI table load if an invalid space ID is found within. 7441 This 7442 will be caught later if the offending method is executed. ACPICA BZ 925. 7443 7444 Fixed an issue with the FFixedHW space ID where the ID was not always 7445 recognized properly (Both ACPICA and iASL). ACPICA BZ 926. 7446 7447 Fixed a problem with the 32-bit generation of the unix-specific OSL 7448 (osunixxf.c). Lin Ming, ACPICA BZ 936. 7449 7450 Several changes made to enable generation with the GCC 4.6 compiler. 7451 ACPICA BZ 7452 935. 7453 7454 New error messages: Unsupported I/O requests (not 8/16/32 bit), and 7455 Index/Bank 7456 field registers out-of-range. 7457 7458 2) iASL Compiler/Disassembler and Tools: 7459 7460 iASL: Implemented the __PATH__ operator, which returns the full pathname 7461 of 7462 the current source file. 7463 7464 AcpiHelp: Automatically display expanded keyword information for all ASL 7465 operators. 7466 7467 Debugger: Add "Template" command to disassemble/dump resource template 7468 buffers. 7469 7470 Added a new master script to generate and execute the ASLTS test suite. 7471 Automatically handles 32- and 64-bit generation. See tests/aslts.sh 7472 7473 iASL: Fix problem with listing generation during processing of the 7474 Switch() 7475 operator where AML listing was disabled until the entire Switch block was 7476 completed. 7477 7478 iASL: Improve support for semicolon statement terminators. Fix "invalid 7479 character" message for some cases when the semicolon is used. Semicolons 7480 are 7481 now allowed after every <Term> grammar element. ACPICA BZ 927. 7482 7483 iASL: Fixed some possible aliasing warnings during generation. ACPICA BZ 7484 923. 7485 7486 Disassembler: Fix problem with disassembly of the DataTableRegion 7487 operator 7488 where an inadvertent "Unhandled deferred opcode" message could be 7489 generated. 7490 7491 3) Example Code and Data Size 7492 7493 These are the sizes for the OS-independent acpica.lib produced by the 7494 Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code 7495 includes the debug output trace mechanism and has a much larger code and 7496 data 7497 size. 7498 7499 Previous Release: 7500 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 7501 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 7502 Current Release: 7503 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total 7504 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total 7505 7506 ---------------------------------------- 7507 22 September 2011. Summary of changes for version 20110922: 7508 7509 0) ACPI 5.0 News: 7510 7511 Support for ACPI 5.0 in ACPICA has been underway for several months and 7512 will 7513 be released at the same time that ACPI 5.0 is officially released. 7514 7515 The ACPI 5.0 specification is on track for release in the next few 7516 months. 7517 7518 1) ACPICA Core Subsystem: 7519 7520 Fixed a problem where the maximum sleep time for the Sleep() operator was 7521 intended to be limited to two seconds, but was inadvertently limited to 7522 20 7523 seconds instead. 7524 7525 Linux and Unix makefiles: Added header file dependencies to ensure 7526 correct 7527 generation of ACPICA core code and utilities. Also simplified the 7528 makefiles 7529 considerably through the use of the vpath variable to specify search 7530 paths. 7531 ACPICA BZ 924. 7532 7533 2) iASL Compiler/Disassembler and Tools: 7534 7535 iASL: Implemented support to check the access length for all fields 7536 created to 7537 access named Resource Descriptor fields. For example, if a resource field 7538 is 7539 defined to be two bits, a warning is issued if a CreateXxxxField() is 7540 used 7541 with an incorrect bit length. This is implemented for all current 7542 resource 7543 descriptor names. ACPICA BZ 930. 7544 7545 Disassembler: Fixed a byte ordering problem with the output of 24-bit and 7546 56- 7547 bit integers. 7548 7549 iASL: Fixed a couple of issues associated with variable-length package 7550 objects. 1) properly handle constants like One, Ones, Zero -- do not make 7551 a 7552 VAR_PACKAGE when these are used as a package length. 2) Allow the 7553 VAR_PACKAGE 7554 opcode (in addition to PACKAGE) when validating object types for 7555 predefined 7556 names. 7557 7558 iASL: Emit statistics for all output files (instead of just the ASL input 7559 and 7560 AML output). Includes listings, hex files, etc. 7561 7562 iASL: Added -G option to the table compiler to allow the compilation of 7563 custom 7564 ACPI tables. The only part of a table that is required is the standard 7565 36- 7566 byte 7567 ACPI header. 7568 7569 AcpiXtract: Ported to the standard ACPICA environment (with ACPICA 7570 headers), 7571 which also adds correct 64-bit support. Also, now all output filenames 7572 are 7573 completely lower case. 7574 7575 AcpiExec: Ignore any non-AML tables (tables other than DSDT or SSDT) when 7576 loading table files. A warning is issued for any such tables. The only 7577 exception is an FADT. This also fixes a possible fault when attempting to 7578 load 7579 non-AML tables. ACPICA BZ 932. 7580 7581 AcpiHelp: Added the AccessAs and Offset operators. Fixed a problem where 7582 a 7583 missing table terminator could cause a fault when using the -p option. 7584 7585 AcpiSrc: Fixed a possible divide-by-zero fault when generating file 7586 statistics. 7587 7588 3) Example Code and Data Size 7589 7590 These are the sizes for the OS-independent acpica.lib produced by the 7591 Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code 7592 includes the debug output trace mechanism and has a much larger code and 7593 data 7594 size. 7595 7596 Previous Release (VC 9.0): 7597 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 7598 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 7599 Current Release (VC 9.0): 7600 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 7601 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 7602 7603 7604 ---------------------------------------- 7605 23 June 2011. Summary of changes for version 20110623: 7606 7607 1) ACPI CA Core Subsystem: 7608 7609 Updated the predefined name repair mechanism to not attempt repair of a 7610 _TSS 7611 return object if a _PSS object is present. We can only sort the _TSS 7612 return 7613 package if there is no _PSS within the same scope. This is because if 7614 _PSS 7615 is 7616 present, the ACPI specification dictates that the _TSS Power Dissipation 7617 field 7618 is to be ignored, and therefore some BIOSs leave garbage values in the 7619 _TSS 7620 Power field(s). In this case, it is best to just return the _TSS package 7621 as- 7622 is. Reported by, and fixed with assistance from Fenghua Yu. 7623 7624 Added an option to globally disable the control method return value 7625 validation 7626 and repair. This runtime option can be used to disable return value 7627 repair 7628 if 7629 this is causing a problem on a particular machine. Also added an option 7630 to 7631 AcpiExec (-dr) to set this disable flag. 7632 7633 All makefiles and project files: Major changes to improve generation of 7634 ACPICA 7635 tools. ACPICA BZ 912: 7636 Reduce default optimization levels to improve compatibility 7637 For Linux, add strict-aliasing=0 for gcc 4 7638 Cleanup and simplify use of command line defines 7639 Cleanup multithread library support 7640 Improve usage messages 7641 7642 Linux-specific header: update handling of THREAD_ID and pthread. For the 7643 32- 7644 bit case, improve casting to eliminate possible warnings, especially with 7645 the 7646 acpica tools. 7647 7648 Example Code and Data Size: These are the sizes for the OS-independent 7649 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 7650 debug 7651 version of the code includes the debug output trace mechanism and has a 7652 much 7653 larger code and data size. 7654 7655 Previous Release (VC 9.0): 7656 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total 7657 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 7658 Current Release (VC 9.0): 7659 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 7660 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 7661 7662 2) iASL Compiler/Disassembler and Tools: 7663 7664 With this release, a new utility named "acpihelp" has been added to the 7665 ACPICA 7666 package. This utility summarizes the ACPI specification chapters for the 7667 ASL 7668 and AML languages. It generates under Linux/Unix as well as Windows, and 7669 provides the following functionality: 7670 Find/display ASL operator(s) -- with description and syntax. 7671 Find/display ASL keyword(s) -- with exact spelling and descriptions. 7672 Find/display ACPI predefined name(s) -- with description, number 7673 of arguments, and the return value data type. 7674 Find/display AML opcode name(s) -- with opcode, arguments, and 7675 grammar. 7676 Decode/display AML opcode -- with opcode name, arguments, and 7677 grammar. 7678 7679 Service Layers: Make multi-thread support configurable. Conditionally 7680 compile 7681 the multi-thread support so that threading libraries will not be linked 7682 if 7683 not 7684 necessary. The only tool that requires multi-thread support is AcpiExec. 7685 7686 iASL: Update yyerrror/AslCompilerError for "const" errors. Newer versions 7687 of 7688 Bison appear to want the interface to yyerror to be a const char * (or at 7689 least this is a problem when generating iASL on some systems.) ACPICA BZ 7690 923 7691 Pierre Lejeune. 7692 7693 Tools: Fix for systems where O_BINARY is not defined. Only used for 7694 Windows 7695 versions of the tools. 7696 7697 ---------------------------------------- 7698 27 May 2011. Summary of changes for version 20110527: 7699 7700 1) ACPI CA Core Subsystem: 7701 7702 ASL Load() operator: Reinstate most restrictions on the incoming ACPI 7703 table 7704 signature. Now, only allow SSDT, OEMx, and a null signature. History: 7705 1) Originally, we checked the table signature for "SSDT" or "PSDT". 7706 (PSDT is now obsolete.) 7707 2) We added support for OEMx tables, signature "OEM" plus a fourth 7708 "don't care" character. 7709 3) Valid tables were encountered with a null signature, so we just 7710 gave up on validating the signature, (05/2008). 7711 4) We encountered non-AML tables such as the MADT, which caused 7712 interpreter errors and kernel faults. So now, we once again allow 7713 only SSDT, OEMx, and now, also a null signature. (05/2011). 7714 7715 Added the missing _TDL predefined name to the global name list in order 7716 to 7717 enable validation. Affects both the core ACPICA code and the iASL 7718 compiler. 7719 7720 Example Code and Data Size: These are the sizes for the OS-independent 7721 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 7722 debug 7723 version of the code includes the debug output trace mechanism and has a 7724 much 7725 larger code and data size. 7726 7727 Previous Release (VC 9.0): 7728 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total 7729 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total 7730 Current Release (VC 9.0): 7731 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total 7732 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 7733 7734 2) iASL Compiler/Disassembler and Tools: 7735 7736 Debugger/AcpiExec: Implemented support for "complex" method arguments on 7737 the 7738 debugger command line. This adds support beyond simple integers -- 7739 including 7740 Strings, Buffers, and Packages. Includes support for nested packages. 7741 Increased the default command line buffer size to accommodate these 7742 arguments. 7743 See the ACPICA reference for details and syntax. ACPICA BZ 917. 7744 7745 Debugger/AcpiExec: Implemented support for "default" method arguments for 7746 the 7747 Execute/Debug command. Now, the debugger will always invoke a control 7748 method 7749 with the required number of arguments -- even if the command line 7750 specifies 7751 none or insufficient arguments. It uses default integer values for any 7752 missing 7753 arguments. Also fixes a bug where only six method arguments maximum were 7754 supported instead of the required seven. 7755 7756 Debugger/AcpiExec: Add a maximum buffer length parameter to AcpiOsGetLine 7757 and 7758 also return status in order to prevent buffer overruns. See the ACPICA 7759 reference for details and syntax. ACPICA BZ 921 7760 7761 iASL: Cleaned up support for Berkeley yacc. A general cleanup of code and 7762 makefiles to simplify support for the two different but similar parser 7763 generators, bison and yacc. 7764 7765 Updated the generic unix makefile for gcc 4. The default gcc version is 7766 now 7767 expected to be 4 or greater, since options specific to gcc 4 are used. 7768 7769 ---------------------------------------- 7770 13 April 2011. Summary of changes for version 20110413: 7771 7772 1) ACPI CA Core Subsystem: 7773 7774 Implemented support to execute a so-called "orphan" _REG method under the 7775 EC 7776 device. This change will force the execution of a _REG method underneath 7777 the 7778 EC 7779 device even if there is no corresponding operation region of type 7780 EmbeddedControl. Fixes a problem seen on some machines and apparently is 7781 compatible with Windows behavior. ACPICA BZ 875. 7782 7783 Added more predefined methods that are eligible for automatic NULL 7784 package 7785 element removal. This change adds another group of predefined names to 7786 the 7787 list 7788 of names that can be repaired by having NULL package elements dynamically 7789 removed. This group are those methods that return a single variable- 7790 length 7791 package containing simple data types such as integers, buffers, strings. 7792 This 7793 includes: _ALx, _BCL, _CID,_ DOD, _EDL, _FIX, _PCL, _PLD, _PMD, _PRx, 7794 _PSL, 7795 _Sx, 7796 and _TZD. ACPICA BZ 914. 7797 7798 Split and segregated all internal global lock functions to a new file, 7799 evglock.c. 7800 7801 Updated internal address SpaceID for DataTable regions. Moved this 7802 internal 7803 space 7804 id in preparation for ACPI 5.0 changes that will include some new space 7805 IDs. 7806 This 7807 change should not affect user/host code. 7808 7809 Example Code and Data Size: These are the sizes for the OS-independent 7810 acpica.lib 7811 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug 7812 version of 7813 the code includes the debug output trace mechanism and has a much larger 7814 code 7815 and 7816 data size. 7817 7818 Previous Release (VC 9.0): 7819 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total 7820 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total 7821 Current Release (VC 9.0): 7822 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total 7823 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total 7824 7825 2) iASL Compiler/Disassembler and Tools: 7826 7827 iASL/DTC: Major update for new grammar features. Allow generic data types 7828 in 7829 custom ACPI tables. Field names are now optional. Any line can be split 7830 to 7831 multiple lines using the continuation char (\). Large buffers now use 7832 line- 7833 continuation character(s) and no colon on the continuation lines. See the 7834 grammar 7835 update in the iASL compiler reference. ACPI BZ 910,911. Lin Ming, Bob 7836 Moore. 7837 7838 iASL: Mark ASL "Return()" and the simple "Return" as "Null" return 7839 statements. 7840 Since the parser stuffs a "zero" as the return value for these statements 7841 (due 7842 to 7843 the underlying AML grammar), they were seen as "return with value" by the 7844 iASL 7845 semantic checking. They are now seen correctly as "null" return 7846 statements. 7847 7848 iASL: Check if a_REG declaration has a corresponding Operation Region. 7849 Adds a 7850 check for each _REG to ensure that there is in fact a corresponding 7851 operation 7852 region declaration in the same scope. If not, the _REG method is not very 7853 useful 7854 since it probably won't be executed. ACPICA BZ 915. 7855 7856 iASL/DTC: Finish support for expression evaluation. Added a new 7857 expression 7858 parser 7859 that implements c-style operator precedence and parenthesization. ACPICA 7860 bugzilla 7861 908. 7862 7863 Disassembler/DTC: Remove support for () and <> style comments in data 7864 tables. 7865 Now 7866 that DTC has full expression support, we don't want to have comment 7867 strings 7868 that 7869 start with a parentheses or a less-than symbol. Now, only the standard /* 7870 and 7871 // 7872 comments are supported, as well as the bracket [] comments. 7873 7874 AcpiXtract: Fix for RSDP and dynamic SSDT extraction. These tables have 7875 "unusual" 7876 headers in the acpidump file. Update the header validation to support 7877 these 7878 tables. Problem introduced in previous AcpiXtract version in the change 7879 to 7880 support "wrong checksum" error messages emitted by acpidump utility. 7881 7882 iASL: Add a * option to generate all template files (as a synonym for 7883 ALL) 7884 as 7885 in 7886 "iasl -T *" or "iasl -T ALL". 7887 7888 iASL/DTC: Do not abort compiler on fatal errors. We do not want to 7889 completely 7890 abort the compiler on "fatal" errors, simply should abort the current 7891 compile. 7892 This allows multiple compiles with a single (possibly wildcard) compiler 7893 invocation. 7894 7895 ---------------------------------------- 7896 16 March 2011. Summary of changes for version 20110316: 7897 7898 1) ACPI CA Core Subsystem: 7899 7900 Fixed a problem caused by a _PRW method appearing at the namespace root 7901 scope 7902 during the setup of wake GPEs. A fault could occur if a _PRW directly 7903 under 7904 the 7905 root object was passed to the AcpiSetupGpeForWake interface. Lin Ming. 7906 7907 Implemented support for "spurious" Global Lock interrupts. On some 7908 systems, a 7909 global lock interrupt can occur without the pending flag being set. Upon 7910 a 7911 GL 7912 interrupt, we now ensure that a thread is actually waiting for the lock 7913 before 7914 signaling GL availability. Rafael Wysocki, Bob Moore. 7915 7916 Example Code and Data Size: These are the sizes for the OS-independent 7917 acpica.lib 7918 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug 7919 version of 7920 the code includes the debug output trace mechanism and has a much larger 7921 code 7922 and 7923 data size. 7924 7925 Previous Release (VC 9.0): 7926 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 7927 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 7928 Current Release (VC 9.0): 7929 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total 7930 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total 7931 7932 2) iASL Compiler/Disassembler and Tools: 7933 7934 Implemented full support for the "SLIC" ACPI table. Includes support in 7935 the 7936 header files, disassembler, table compiler, and template generator. Bob 7937 Moore, 7938 Lin Ming. 7939 7940 AcpiXtract: Correctly handle embedded comments and messages from 7941 AcpiDump. 7942 Apparently some or all versions of acpidump will occasionally emit a 7943 comment 7944 like 7945 "Wrong checksum", etc., into the dump file. This was causing problems for 7946 AcpiXtract. ACPICA BZ 905. 7947 7948 iASL: Fix the Linux makefile by removing an inadvertent double file 7949 inclusion. 7950 ACPICA BZ 913. 7951 7952 AcpiExec: Update installation of operation region handlers. Install one 7953 handler 7954 for a user-defined address space. This is used by the ASL test suite 7955 (ASLTS). 7956 7957 ---------------------------------------- 7958 11 February 2011. Summary of changes for version 20110211: 7959 7960 1) ACPI CA Core Subsystem: 7961 7962 Added a mechanism to defer _REG methods for some early-installed 7963 handlers. 7964 Most user handlers should be installed before call to 7965 AcpiEnableSubsystem. 7966 However, Event handlers and region handlers should be installed after 7967 AcpiInitializeObjects. Override handlers for the "default" regions should 7968 be 7969 installed early, however. This change executes all _REG methods for the 7970 default regions (Memory/IO/PCI/DataTable) simultaneously to prevent any 7971 chicken/egg issues between them. ACPICA BZ 848. 7972 7973 Implemented an optimization for GPE detection. This optimization will 7974 simply 7975 ignore GPE registers that contain no enabled GPEs -- there is no need to 7976 read the register since this information is available internally. This 7977 becomes more important on machines with a large GPE space. ACPICA 7978 bugzilla 7979 884. Lin Ming. Suggestion from Joe Liu. 7980 7981 Removed all use of the highly unreliable FADT revision field. The 7982 revision 7983 number in the FADT has been found to be completely unreliable and cannot 7984 be 7985 trusted. Only the actual table length can be used to infer the version. 7986 This 7987 change updates the ACPICA core and the disassembler so that both no 7988 longer 7989 even look at the FADT version and instead depend solely upon the FADT 7990 length. 7991 7992 Fix an unresolved name issue for the no-debug and no-error-message source 7993 generation cases. The _AcpiModuleName was left undefined in these cases, 7994 but 7995 it is actually needed as a parameter to some interfaces. Define 7996 _AcpiModuleName as a null string in these cases. ACPICA Bugzilla 888. 7997 7998 Split several large files (makefiles and project files updated) 7999 utglobal.c -> utdecode.c 8000 dbcomds.c -> dbmethod.c dbnames.c 8001 dsopcode.c -> dsargs.c dscontrol.c 8002 dsload.c -> dsload2.c 8003 aslanalyze.c -> aslbtypes.c aslwalks.c 8004 8005 Example Code and Data Size: These are the sizes for the OS-independent 8006 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 8007 debug version of the code includes the debug output trace mechanism and 8008 has 8009 a much larger code and data size. 8010 8011 Previous Release (VC 9.0): 8012 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 8013 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 8014 Current Release (VC 9.0): 8015 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 8016 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 8017 8018 2) iASL Compiler/Disassembler and Tools: 8019 8020 iASL: Implemented the predefined macros __LINE__, __FILE__, and __DATE__. 8021 These are useful C-style macros with the standard definitions. ACPICA 8022 bugzilla 898. 8023 8024 iASL/DTC: Added support for integer expressions and labels. Support for 8025 full 8026 expressions for all integer fields in all ACPI tables. Support for labels 8027 in 8028 "generic" portions of tables such as UEFI. See the iASL reference manual. 8029 8030 Debugger: Added a command to display the status of global handlers. The 8031 "handlers" command will display op region, fixed event, and miscellaneous 8032 global handlers. installation status -- and for op regions, whether 8033 default 8034 or user-installed handler will be used. 8035 8036 iASL: Warn if reserved method incorrectly returns a value. Many 8037 predefined 8038 names are defined such that they do not return a value. If implemented as 8039 a 8040 method, issue a warning if such a name explicitly returns a value. ACPICA 8041 Bugzilla 855. 8042 8043 iASL: Added detection of GPE method name conflicts. Detects a conflict 8044 where 8045 there are two GPE methods of the form _Lxy and _Exy in the same scope. 8046 (For 8047 example, _L1D and _E1D in the same scope.) ACPICA bugzilla 848. 8048 8049 iASL/DTC: Fixed a couple input scanner issues with comments and line 8050 numbers. Comment remover could get confused and miss a comment ending. 8051 Fixed 8052 a problem with line counter maintenance. 8053 8054 iASL/DTC: Reduced the severity of some errors from fatal to error. There 8055 is 8056 no need to abort on simple errors within a field definition. 8057 8058 Debugger: Simplified the output of the help command. All help output now 8059 in 8060 a single screen, instead of help subcommands. ACPICA Bugzilla 897. 8061 8062 ---------------------------------------- 8063 12 January 2011. Summary of changes for version 20110112: 8064 8065 1) ACPI CA Core Subsystem: 8066 8067 Fixed a race condition between method execution and namespace walks that 8068 can 8069 possibly cause a fault. The problem was apparently introduced in version 8070 20100528 as a result of a performance optimization that reduces the 8071 number 8072 of 8073 namespace walks upon method exit by using the delete_namespace_subtree 8074 function instead of the delete_namespace_by_owner function used 8075 previously. 8076 Bug is a missing namespace lock in the delete_namespace_subtree function. 8077 dana.myers (a] oracle.com 8078 8079 Fixed several issues and a possible fault with the automatic "serialized" 8080 method support. History: This support changes a method to "serialized" on 8081 the 8082 fly if the method generates an AE_ALREADY_EXISTS error, indicating the 8083 possibility that it cannot handle reentrancy. This fix repairs a couple 8084 of 8085 issues seen in the field, especially on machines with many cores: 8086 8087 1) Delete method children only upon the exit of the last thread, 8088 so as to not delete objects out from under other running threads 8089 (and possibly causing a fault.) 8090 2) Set the "serialized" bit for the method only upon the exit of the 8091 Last thread, so as to not cause deadlock when running threads 8092 attempt to exit. 8093 3) Cleanup the use of the AML "MethodFlags" and internal method flags 8094 so that there is no longer any confusion between the two. 8095 8096 Lin Ming, Bob Moore. Reported by dana.myers (a] oracle.com. 8097 8098 Debugger: Now lock the namespace for duration of a namespace dump. 8099 Prevents 8100 issues if the namespace is changing dynamically underneath the debugger. 8101 Especially affects temporary namespace nodes, since the debugger displays 8102 these also. 8103 8104 Updated the ordering of include files. The ACPICA headers should appear 8105 before any compiler-specific headers (stdio.h, etc.) so that acenv.h can 8106 set 8107 any necessary compiler-specific defines, etc. Affects the ACPI-related 8108 tools 8109 and utilities. 8110 8111 Updated all ACPICA copyrights and signons to 2011. Added the 2011 8112 copyright 8113 to all module headers and signons, including the Linux header. This 8114 affects 8115 virtually every file in the ACPICA core subsystem, iASL compiler, and all 8116 utilities. 8117 8118 Added project files for MS Visual Studio 2008 (VC++ 9.0). The original 8119 project files for VC++ 6.0 are now obsolete. New project files can be 8120 found 8121 under acpica/generate/msvc9. See acpica/generate/msvc9/readme.txt for 8122 details. 8123 8124 Example Code and Data Size: These are the sizes for the OS-independent 8125 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 8126 debug version of the code includes the debug output trace mechanism and 8127 has a 8128 much larger code and data size. 8129 8130 Previous Release (VC 6.0): 8131 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total 8132 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total 8133 Current Release (VC 9.0): 8134 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 8135 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 8136 8137 2) iASL Compiler/Disassembler and Tools: 8138 8139 iASL: Added generic data types to the Data Table compiler. Add "generic" 8140 data 8141 types such as UINT32, String, Unicode, etc., to simplify the generation 8142 of 8143 platform-defined tables such as UEFI. Lin Ming. 8144 8145 iASL: Added listing support for the Data Table Compiler. Adds listing 8146 support 8147 (-l) to display actual binary output for each line of input code. 8148 8149 ---------------------------------------- 8150 09 December 2010. Summary of changes for version 20101209: 8151 8152 1) ACPI CA Core Subsystem: 8153 8154 Completed the major overhaul of the GPE support code that was begun in 8155 July 8156 2010. Major features include: removal of _PRW execution in ACPICA (host 8157 executes _PRWs anyway), cleanup of "wake" GPE interfaces and processing, 8158 changes to existing interfaces, simplification of GPE handler operation, 8159 and 8160 a handful of new interfaces: 8161 8162 AcpiUpdateAllGpes 8163 AcpiFinishGpe 8164 AcpiSetupGpeForWake 8165 AcpiSetGpeWakeMask 8166 One new file, evxfgpe.c to consolidate all external GPE interfaces. 8167 8168 See the ACPICA Programmer Reference for full details and programming 8169 information. See the new section 4.4 "General Purpose Event (GPE) 8170 Support" 8171 for a full overview, and section 8.7 "ACPI General Purpose Event 8172 Management" 8173 for programming details. ACPICA BZ 858,870,877. Matthew Garrett, Lin 8174 Ming, 8175 Bob Moore, Rafael Wysocki. 8176 8177 Implemented a new GPE feature for Windows compatibility, the "Implicit 8178 Wake 8179 GPE Notify". This feature will automatically issue a Notify(2) on a 8180 device 8181 when a Wake GPE is received if there is no corresponding GPE method or 8182 handler. ACPICA BZ 870. 8183 8184 Fixed a problem with the Scope() operator during table parse and load 8185 phase. 8186 During load phase (table load or method execution), the scope operator 8187 should 8188 not enter the target into the namespace. Instead, it should open a new 8189 scope 8190 at the target location. Linux BZ 19462, ACPICA BZ 882. 8191 8192 Example Code and Data Size: These are the sizes for the OS-independent 8193 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8194 debug version of the code includes the debug output trace mechanism and 8195 has a 8196 much larger code and data size. 8197 8198 Previous Release: 8199 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total 8200 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total 8201 Current Release: 8202 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 8203 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 8204 8205 2) iASL Compiler/Disassembler and Tools: 8206 8207 iASL: Relax the alphanumeric restriction on _CID strings. These strings 8208 are 8209 "bus-specific" per the ACPI specification, and therefore any characters 8210 are 8211 acceptable. The only checks that can be performed are for a null string 8212 and 8213 perhaps for a leading asterisk. ACPICA BZ 886. 8214 8215 iASL: Fixed a problem where a syntax error that caused a premature EOF 8216 condition on the source file emitted a very confusing error message. The 8217 premature EOF is now detected correctly. ACPICA BZ 891. 8218 8219 Disassembler: Decode the AccessSize within a Generic Address Structure 8220 (byte 8221 access, word access, etc.) Note, this field does not allow arbitrary bit 8222 access, the size is encoded as 1=byte, 2=word, 3=dword, and 4=qword. 8223 8224 New: AcpiNames utility - Example namespace dump utility. Shows an example 8225 of 8226 ACPICA configuration for a minimal namespace dump utility. Uses table and 8227 namespace managers, but no AML interpreter. Does not add any 8228 functionality 8229 over AcpiExec, it is a subset of AcpiExec. The purpose is to show how to 8230 partition and configure ACPICA. ACPICA BZ 883. 8231 8232 AML Debugger: Increased the debugger buffer size for method return 8233 objects. 8234 Was 4K, increased to 16K. Also enhanced error messages for debugger 8235 method 8236 execution, including the buffer overflow case. 8237 8238 ---------------------------------------- 8239 13 October 2010. Summary of changes for version 20101013: 8240 8241 1) ACPI CA Core Subsystem: 8242 8243 Added support to clear the PCIEXP_WAKE event. When clearing ACPI events, 8244 now 8245 clear the PCIEXP_WAKE_STS bit in the ACPI PM1 Status Register, via 8246 HwClearAcpiStatus. Original change from Colin King. ACPICA BZ 880. 8247 8248 Changed the type of the predefined namespace object _TZ from ThermalZone 8249 to 8250 Device. This was found to be confusing to the host software that 8251 processes 8252 the various thermal zones, since _TZ is not really a ThermalZone. 8253 However, 8254 a 8255 Notify() can still be performed on it. ACPICA BZ 876. Suggestion from Rui 8256 Zhang. 8257 8258 Added Windows Vista SP2 to the list of supported _OSI strings. The actual 8259 string is "Windows 2006 SP2". 8260 8261 Eliminated duplicate code in AcpiUtExecute* functions. Now that the 8262 nsrepair 8263 code automatically repairs _HID-related strings, this type of code is no 8264 longer needed in Execute_HID, Execute_CID, and Execute_UID. ACPICA BZ 8265 878. 8266 8267 Example Code and Data Size: These are the sizes for the OS-independent 8268 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8269 debug version of the code includes the debug output trace mechanism and 8270 has a 8271 much larger code and data size. 8272 8273 Previous Release: 8274 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 8275 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 8276 Current Release: 8277 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 8278 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 8279 8280 2) iASL Compiler/Disassembler and Tools: 8281 8282 iASL: Implemented additional compile-time validation for _HID strings. 8283 The 8284 non-hex prefix (such as "PNP" or "ACPI") must be uppercase, and the 8285 length 8286 of 8287 the string must be exactly seven or eight characters. For both _HID and 8288 _CID 8289 strings, all characters must be alphanumeric. ACPICA BZ 874. 8290 8291 iASL: Allow certain "null" resource descriptors. Some BIOS code creates 8292 descriptors that are mostly or all zeros, with the expectation that they 8293 will 8294 be filled in at runtime. iASL now allows this as long as there is a 8295 "resource 8296 tag" (name) associated with the descriptor, which gives the ASL a handle 8297 needed to modify the descriptor. ACPICA BZ 873. 8298 8299 Added single-thread support to the generic Unix application OSL. 8300 Primarily 8301 for iASL support, this change removes the use of semaphores in the 8302 single- 8303 threaded ACPICA tools/applications - increasing performance. The 8304 _MULTI_THREADED option was replaced by the (reverse) ACPI_SINGLE_THREADED 8305 option. ACPICA BZ 879. 8306 8307 AcpiExec: several fixes for the 64-bit version. Adds XSDT support and 8308 support 8309 for 64-bit DSDT/FACS addresses in the FADT. Lin Ming. 8310 8311 iASL: Moved all compiler messages to a new file, aslmessages.h. 8312 8313 ---------------------------------------- 8314 15 September 2010. Summary of changes for version 20100915: 8315 8316 1) ACPI CA Core Subsystem: 8317 8318 Removed the AcpiOsDerivePciId OSL interface. The various host 8319 implementations 8320 of this function were not OS-dependent and are now obsolete and can be 8321 removed from all host OSLs. This function has been replaced by 8322 AcpiHwDerivePciId, which is now part of the ACPICA core code. 8323 AcpiHwDerivePciId has been implemented without recursion. Adds one new 8324 module, hwpci.c. ACPICA BZ 857. 8325 8326 Implemented a dynamic repair for _HID and _CID strings. The following 8327 problems are now repaired at runtime: 1) Remove a leading asterisk in the 8328 string, and 2) the entire string is uppercased. Both repairs are in 8329 accordance with the ACPI specification and will simplify host driver 8330 code. 8331 ACPICA BZ 871. 8332 8333 The ACPI_THREAD_ID type is no longer configurable, internally it is now 8334 always UINT64. This simplifies the ACPICA code, especially any printf 8335 output. 8336 UINT64 is the only common data type for all thread_id types across all 8337 operating systems. It is now up to the host OSL to cast the native 8338 thread_id 8339 type to UINT64 before returning the value to ACPICA (via 8340 AcpiOsGetThreadId). 8341 Lin Ming, Bob Moore. 8342 8343 Added the ACPI_INLINE type to enhance the ACPICA configuration. The 8344 "inline" 8345 keyword is not standard across compilers, and this type allows inline to 8346 be 8347 configured on a per-compiler basis. Lin Ming. 8348 8349 Made the system global AcpiGbl_SystemAwakeAndRunning publicly 8350 available. 8351 Added an extern for this boolean in acpixf.h. Some hosts utilize this 8352 value 8353 during suspend/restore operations. ACPICA BZ 869. 8354 8355 All code that implements error/warning messages with the "ACPI:" prefix 8356 has 8357 been moved to a new module, utxferror.c. 8358 8359 The UINT64_OVERLAY was moved to utmath.c, which is the only module where 8360 it 8361 is used. ACPICA BZ 829. Lin Ming, Bob Moore. 8362 8363 Example Code and Data Size: These are the sizes for the OS-independent 8364 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8365 debug version of the code includes the debug output trace mechanism and 8366 has a 8367 much larger code and data size. 8368 8369 Previous Release: 8370 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total 8371 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total 8372 Current Release: 8373 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 8374 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 8375 8376 2) iASL Compiler/Disassembler and Tools: 8377 8378 iASL/Disassembler: Write ACPI errors to stderr instead of the output 8379 file. 8380 This keeps the output files free of random error messages that may 8381 originate 8382 from within the namespace/interpreter code. Used this opportunity to 8383 merge 8384 all ACPI:-style messages into a single new module, utxferror.c. ACPICA BZ 8385 866. Lin Ming, Bob Moore. 8386 8387 Tools: update some printfs for ansi warnings on size_t. Handle width 8388 change 8389 of size_t on 32-bit versus 64-bit generations. Lin Ming. 8390 8391 ---------------------------------------- 8392 06 August 2010. Summary of changes for version 20100806: 8393 8394 1) ACPI CA Core Subsystem: 8395 8396 Designed and implemented a new host interface to the _OSI support code. 8397 This 8398 will allow the host to dynamically add or remove multiple _OSI strings, 8399 as 8400 well as install an optional handler that is called for each _OSI 8401 invocation. 8402 Also added a new AML debugger command, 'osi' to display and modify the 8403 global 8404 _OSI string table, and test support in the AcpiExec utility. See the 8405 ACPICA 8406 reference manual for full details. Lin Ming, Bob Moore. ACPICA BZ 836. 8407 New Functions: 8408 AcpiInstallInterface - Add an _OSI string. 8409 AcpiRemoveInterface - Delete an _OSI string. 8410 AcpiInstallInterfaceHandler - Install optional _OSI handler. 8411 Obsolete Functions: 8412 AcpiOsValidateInterface - no longer used. 8413 New Files: 8414 source/components/utilities/utosi.c 8415 8416 Re-introduced the support to enable multi-byte transfers for Embedded 8417 Controller (EC) operation regions. A reported problem was found to be a 8418 bug 8419 in the host OS, not in the multi-byte support. Previously, the maximum 8420 data 8421 size passed to the EC operation region handler was a single byte. There 8422 are 8423 often EC Fields larger than one byte that need to be transferred, and it 8424 is 8425 useful for the EC driver to lock these as a single transaction. This 8426 change 8427 enables single transfers larger than 8 bits. This effectively changes the 8428 access to the EC space from ByteAcc to AnyAcc, and will probably require 8429 changes to the host OS Embedded Controller driver to enable 16/32/64/256- 8430 bit 8431 transfers in addition to 8-bit transfers. Alexey Starikovskiy, Lin Ming. 8432 8433 Fixed a problem with the prototype for AcpiOsReadPciConfiguration. The 8434 prototype in acpiosxf.h had the output value pointer as a (void *). 8435 It should be a (UINT64 *). This may affect some host OSL code. 8436 8437 Fixed a couple problems with the recently modified Linux makefiles for 8438 iASL 8439 and AcpiExec. These new makefiles place the generated object files in the 8440 local directory so that there can be no collisions between the files that 8441 are 8442 shared between them that are compiled with different options. 8443 8444 Example Code and Data Size: These are the sizes for the OS-independent 8445 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8446 debug version of the code includes the debug output trace mechanism and 8447 has a 8448 much larger code and data size. 8449 8450 Previous Release: 8451 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 8452 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total 8453 Current Release: 8454 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total 8455 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total 8456 8457 2) iASL Compiler/Disassembler and Tools: 8458 8459 iASL/Disassembler: Added a new option (-da, "disassemble all") to load 8460 the 8461 namespace from and disassemble an entire group of AML files. Useful for 8462 loading all of the AML tables for a given machine (DSDT, SSDT1...SSDTn) 8463 and 8464 disassembling with one simple command. ACPICA BZ 865. Lin Ming. 8465 8466 iASL: Allow multiple invocations of -e option. This change allows 8467 multiple 8468 uses of -e on the command line: "-e ssdt1.dat -e ssdt2.dat". ACPICA BZ 8469 834. 8470 Lin Ming. 8471 8472 ---------------------------------------- 8473 02 July 2010. Summary of changes for version 20100702: 8474 8475 1) ACPI CA Core Subsystem: 8476 8477 Implemented several updates to the recently added GPE reference count 8478 support. The model for "wake" GPEs is changing to give the host OS 8479 complete 8480 control of these GPEs. Eventually, the ACPICA core will not execute any 8481 _PRW 8482 methods, since the host already must execute them. Also, additional 8483 changes 8484 were made to help ensure that the reference counts are kept in proper 8485 synchronization with reality. Rafael J. Wysocki. 8486 8487 1) Ensure that GPEs are not enabled twice during initialization. 8488 2) Ensure that GPE enable masks stay in sync with the reference count. 8489 3) Do not inadvertently enable GPEs when writing GPE registers. 8490 4) Remove the internal wake reference counter and add new AcpiGpeWakeup 8491 interface. This interface will set or clear individual GPEs for wakeup. 8492 5) Remove GpeType argument from AcpiEnable and AcpiDisable. These 8493 interfaces 8494 are now used for "runtime" GPEs only. 8495 8496 Changed the behavior of the GPE install/remove handler interfaces. The 8497 GPE 8498 is 8499 no longer disabled during this process, as it was found to cause problems 8500 on 8501 some machines. Rafael J. Wysocki. 8502 8503 Reverted a change introduced in version 20100528 to enable Embedded 8504 Controller multi-byte transfers. This change was found to cause problems 8505 with 8506 Index Fields and possibly Bank Fields. It will be reintroduced when these 8507 problems have been resolved. 8508 8509 Fixed a problem with references to Alias objects within Package Objects. 8510 A 8511 reference to an Alias within the definition of a Package was not always 8512 resolved properly. Aliases to objects like Processors, Thermal zones, 8513 etc. 8514 were resolved to the actual object instead of a reference to the object 8515 as 8516 it 8517 should be. Package objects are only allowed to contain integer, string, 8518 buffer, package, and reference objects. Redhat bugzilla 608648. 8519 8520 Example Code and Data Size: These are the sizes for the OS-independent 8521 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8522 debug version of the code includes the debug output trace mechanism and 8523 has a 8524 much larger code and data size. 8525 8526 Previous Release: 8527 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 8528 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total 8529 Current Release: 8530 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 8531 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total 8532 8533 2) iASL Compiler/Disassembler and Tools: 8534 8535 iASL: Implemented a new compiler subsystem to allow definition and 8536 compilation of the non-AML ACPI tables such as FADT, MADT, SRAT, etc. 8537 These 8538 are called "ACPI Data Tables", and the new compiler is the "Data Table 8539 Compiler". This compiler is intended to simplify the existing error-prone 8540 process of creating these tables for the BIOS, as well as allowing the 8541 disassembly, modification, recompilation, and override of existing ACPI 8542 data 8543 tables. See the iASL User Guide for detailed information. 8544 8545 iASL: Implemented a new Template Generator option in support of the new 8546 Data 8547 Table Compiler. This option will create examples of all known ACPI tables 8548 that can be used as the basis for table development. See the iASL 8549 documentation and the -T option. 8550 8551 Disassembler and headers: Added support for the WDDT ACPI table (Watchdog 8552 Descriptor Table). 8553 8554 Updated the Linux makefiles for iASL and AcpiExec to place the generated 8555 object files in the local directory so that there can be no collisions 8556 between the shared files between them that are generated with different 8557 options. 8558 8559 Added support for Mac OS X in the Unix OSL used for iASL and AcpiExec. 8560 Use 8561 the #define __APPLE__ to enable this support. 8562 8563 ---------------------------------------- 8564 28 May 2010. Summary of changes for version 20100528: 8565 8566 Note: The ACPI 4.0a specification was released on April 5, 2010 and is 8567 available at www.acpi.info. This is primarily an errata release. 8568 8569 1) ACPI CA Core Subsystem: 8570 8571 Undefined ACPI tables: We are looking for the definitions for the 8572 following 8573 ACPI tables that have been seen in the field: ATKG, IEIT, GSCI. 8574 8575 Implemented support to enable multi-byte transfers for Embedded 8576 Controller 8577 (EC) operation regions. Previously, the maximum data size passed to the 8578 EC 8579 operation region handler was a single byte. There are often EC Fields 8580 larger 8581 than one byte that need to be transferred, and it is useful for the EC 8582 driver 8583 to lock these as a single transaction. This change enables single 8584 transfers 8585 larger than 8 bits. This effectively changes the access to the EC space 8586 from 8587 ByteAcc to AnyAcc, and will probably require changes to the host OS 8588 Embedded 8589 Controller driver to enable 16/32/64/256-bit transfers in addition to 8- 8590 bit 8591 transfers. Alexey Starikovskiy, Lin Ming 8592 8593 Implemented a performance enhancement for namespace search and access. 8594 This 8595 change enhances the performance of namespace searches and walks by adding 8596 a 8597 backpointer to the parent in each namespace node. On large namespaces, 8598 this 8599 change can improve overall ACPI performance by up to 9X. Adding a pointer 8600 to 8601 each namespace node increases the overall size of the internal namespace 8602 by 8603 about 5%, since each namespace entry usually consists of both a namespace 8604 node and an ACPI operand object. However, this is the first growth of the 8605 namespace in ten years. ACPICA bugzilla 817. Alexey Starikovskiy. 8606 8607 Implemented a performance optimization that reduces the number of 8608 namespace 8609 walks. On control method exit, only walk the namespace if the method is 8610 known 8611 to have created namespace objects outside of its local scope. Previously, 8612 the 8613 entire namespace was traversed on each control method exit. This change 8614 can 8615 improve overall ACPI performance by up to 3X. Alexey Starikovskiy, Bob 8616 Moore. 8617 8618 Added support to truncate I/O addresses to 16 bits for Windows 8619 compatibility. 8620 Some ASL code has been seen in the field that inadvertently has bits set 8621 above bit 15. This feature is optional and is enabled if the BIOS 8622 requests 8623 any Windows OSI strings. It can also be enabled by the host OS. Matthew 8624 Garrett, Bob Moore. 8625 8626 Added support to limit the maximum time for the ASL Sleep() operator. To 8627 prevent accidental deep sleeps, limit the maximum time that Sleep() will 8628 actually sleep. Configurable, the default maximum is two seconds. ACPICA 8629 bugzilla 854. 8630 8631 Added run-time validation support for the _WDG and_WED Microsoft 8632 predefined 8633 methods. These objects are defined by "Windows Instrumentation", and are 8634 not 8635 part of the ACPI spec. ACPICA BZ 860. 8636 8637 Expanded all statistic counters used during namespace and device 8638 initialization from 16 to 32 bits in order to support very large 8639 namespaces. 8640 8641 Replaced all instances of %d in printf format specifiers with %u since 8642 nearly 8643 all integers in ACPICA are unsigned. 8644 8645 Fixed the exception namestring for AE_WAKE_ONLY_GPE. Was incorrectly 8646 returned 8647 as AE_NO_HANDLER. 8648 8649 Example Code and Data Size: These are the sizes for the OS-independent 8650 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8651 debug version of the code includes the debug output trace mechanism and 8652 has a 8653 much larger code and data size. 8654 8655 Previous Release: 8656 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total 8657 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total 8658 Current Release: 8659 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 8660 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total 8661 8662 2) iASL Compiler/Disassembler and Tools: 8663 8664 iASL: Added compiler support for the _WDG and_WED Microsoft predefined 8665 methods. These objects are defined by "Windows Instrumentation", and are 8666 not 8667 part of the ACPI spec. ACPICA BZ 860. 8668 8669 AcpiExec: added option to disable the memory tracking mechanism. The -dt 8670 option will disable the tracking mechanism, which improves performance 8671 considerably. 8672 8673 AcpiExec: Restructured the command line options into -d (disable) and -e 8674 (enable) options. 8675 8676 ---------------------------------------- 8677 28 April 2010. Summary of changes for version 20100428: 8678 8679 1) ACPI CA Core Subsystem: 8680 8681 Implemented GPE support for dynamically loaded ACPI tables. For all GPEs, 8682 including FADT-based and GPE Block Devices, execute any _PRW methods in 8683 the 8684 new table, and process any _Lxx/_Exx GPE methods in the new table. Any 8685 runtime GPE that is referenced by an _Lxx/_Exx method in the new table is 8686 immediately enabled. Handles the FADT-defined GPEs as well as GPE Block 8687 Devices. Provides compatibility with other ACPI implementations. Two new 8688 files added, evgpeinit.c and evgpeutil.c. ACPICA BZ 833. Lin Ming, Bob 8689 Moore. 8690 8691 Fixed a regression introduced in version 20100331 within the table 8692 manager 8693 where initial table loading could fail. This was introduced in the fix 8694 for 8695 AcpiReallocateRootTable. Also, renamed some of fields in the table 8696 manager 8697 data structures to clarify their meaning and use. 8698 8699 Fixed a possible allocation overrun during internal object copy in 8700 AcpiUtCopySimpleObject. The original code did not correctly handle the 8701 case 8702 where the object to be copied was a namespace node. Lin Ming. ACPICA BZ 8703 847. 8704 8705 Updated the allocation dump routine, AcpiUtDumpAllocation and fixed a 8706 possible access beyond end-of-allocation. Also, now fully validate 8707 descriptor 8708 (size and type) before output. Lin Ming, Bob Moore. ACPICA BZ 847 8709 8710 Example Code and Data Size: These are the sizes for the OS-independent 8711 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8712 debug version of the code includes the debug output trace mechanism and 8713 has a 8714 much larger code and data size. 8715 8716 Previous Release: 8717 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total 8718 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total 8719 Current Release: 8720 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total 8721 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total 8722 8723 2) iASL Compiler/Disassembler and Tools: 8724 8725 iASL: Implemented Min/Max/Len/Gran validation for address resource 8726 descriptors. This change implements validation for the address fields 8727 that 8728 are common to all address-type resource descriptors. These checks are 8729 implemented: Checks for valid Min/Max, length within the Min/Max window, 8730 valid granularity, Min/Max a multiple of granularity, and _MIF/_MAF as 8731 per 8732 table 6-40 in the ACPI 4.0a specification. Also split the large 8733 aslrestype1.c 8734 and aslrestype2.c files into five new files. ACPICA BZ 840. 8735 8736 iASL: Added support for the _Wxx predefined names. This support was 8737 missing 8738 and these names were not recognized by the compiler as valid predefined 8739 names. ACPICA BZ 851. 8740 8741 iASL: Added an error for all predefined names that are defined to return 8742 no 8743 value and thus must be implemented as Control Methods. These include all 8744 of 8745 the _Lxx, _Exx, _Wxx, and _Qxx names, as well as some other miscellaneous 8746 names such as _DIS, _INI, _IRC, _OFF, _ON, and _PSx. ACPICA BZ 850, 856. 8747 8748 iASL: Implemented the -ts option to emit hex AML data in ASL format, as 8749 an 8750 ASL Buffer. Allows ACPI tables to be easily included within ASL files, to 8751 be 8752 dynamically loaded via the Load() operator. Also cleaned up output for 8753 the 8754 - 8755 ta and -tc options. ACPICA BZ 853. 8756 8757 Tests: Added a new file with examples of extended iASL error checking. 8758 Demonstrates the advanced error checking ability of the iASL compiler. 8759 Available at tests/misc/badcode.asl. 8760 8761 ---------------------------------------- 8762 31 March 2010. Summary of changes for version 20100331: 8763 8764 1) ACPI CA Core Subsystem: 8765 8766 Completed a major update for the GPE support in order to improve support 8767 for 8768 shared GPEs and to simplify both host OS and ACPICA code. Added a 8769 reference 8770 count mechanism to support shared GPEs that require multiple device 8771 drivers. 8772 Several external interfaces have changed. One external interface has been 8773 removed. One new external interface was added. Most of the GPE external 8774 interfaces now use the GPE spinlock instead of the events mutex (and the 8775 Flags parameter for many GPE interfaces has been removed.) See the 8776 updated 8777 ACPICA Programmer Reference for details. Matthew Garrett, Bob Moore, 8778 Rafael 8779 Wysocki. ACPICA BZ 831. 8780 8781 Changed: 8782 AcpiEnableGpe, AcpiDisableGpe, AcpiClearGpe, AcpiGetGpeStatus 8783 Removed: 8784 AcpiSetGpeType 8785 New: 8786 AcpiSetGpe 8787 8788 Implemented write support for DataTable operation regions. These regions 8789 are 8790 defined via the DataTableRegion() operator. Previously, only read support 8791 was 8792 implemented. The ACPI specification allows DataTableRegions to be 8793 read/write, 8794 however. 8795 8796 Implemented a new subsystem option to force a copy of the DSDT to local 8797 memory. Optionally copy the entire DSDT to local memory (instead of 8798 simply 8799 mapping it.) There are some (albeit very rare) BIOSs that corrupt or 8800 replace 8801 the original DSDT, creating the need for this option. Default is FALSE, 8802 do 8803 not copy the DSDT. 8804 8805 Implemented detection of a corrupted or replaced DSDT. This change adds 8806 support to detect a DSDT that has been corrupted and/or replaced from 8807 outside 8808 the OS (by firmware). This is typically catastrophic for the system, but 8809 has 8810 been seen on some machines. Once this problem has been detected, the DSDT 8811 copy option can be enabled via system configuration. Lin Ming, Bob Moore. 8812 8813 Fixed two problems with AcpiReallocateRootTable during the root table 8814 copy. 8815 When copying the root table to the new allocation, the length used was 8816 incorrect. The new size was used instead of the current table size, 8817 meaning 8818 too much data was copied. Also, the count of available slots for ACPI 8819 tables 8820 was not set correctly. Alexey Starikovskiy, Bob Moore. 8821 8822 Example Code and Data Size: These are the sizes for the OS-independent 8823 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8824 debug version of the code includes the debug output trace mechanism and 8825 has a 8826 much larger code and data size. 8827 8828 Previous Release: 8829 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total 8830 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total 8831 Current Release: 8832 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total 8833 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total 8834 8835 2) iASL Compiler/Disassembler and Tools: 8836 8837 iASL: Implement limited typechecking for values returned from predefined 8838 control methods. The type of any returned static (unnamed) object is now 8839 validated. For example, Return(1). ACPICA BZ 786. 8840 8841 iASL: Fixed a predefined name object verification regression. Fixes a 8842 problem 8843 introduced in version 20100304. An error is incorrectly generated if a 8844 predefined name is declared as a static named object with a value defined 8845 using the keywords "Zero", "One", or "Ones". Lin Ming. 8846 8847 iASL: Added Windows 7 support for the -g option (get local ACPI tables) 8848 by 8849 reducing the requested registry access rights. ACPICA BZ 842. 8850 8851 Disassembler: fixed a possible fault when generating External() 8852 statements. 8853 Introduced in commit ae7d6fd: Properly handle externals with parent- 8854 prefix 8855 (carat). Fixes a string length allocation calculation. Lin Ming. 8856 8857 ---------------------------------------- 8858 04 March 2010. Summary of changes for version 20100304: 8859 8860 1) ACPI CA Core Subsystem: 8861 8862 Fixed a possible problem with the AML Mutex handling function 8863 AcpiExReleaseMutex where the function could fault under the very rare 8864 condition when the interpreter has blocked, the interpreter lock is 8865 released, 8866 the interpreter is then reentered via the same thread, and attempts to 8867 acquire an AML mutex that was previously acquired. FreeBSD report 140979. 8868 Lin 8869 Ming. 8870 8871 Implemented additional configuration support for the AML "Debug Object". 8872 Output from the debug object can now be enabled via a global variable, 8873 AcpiGbl_EnableAmlDebugObject. This will assist with remote machine 8874 debugging. 8875 This debug output is now available in the release version of ACPICA 8876 instead 8877 of just the debug version. Also, the entire debug output module can now 8878 be 8879 configured out of the ACPICA build if desired. One new file added, 8880 executer/exdebug.c. Lin Ming, Bob Moore. 8881 8882 Added header support for the ACPI MCHI table (Management Controller Host 8883 Interface Table). This table was added in ACPI 4.0, but the defining 8884 document 8885 has only recently become available. 8886 8887 Standardized output of integer values for ACPICA warnings/errors. Always 8888 use 8889 0x prefix for hex output, always use %u for unsigned integer decimal 8890 output. 8891 Affects ACPI_INFO, ACPI_ERROR, ACPI_EXCEPTION, and ACPI_WARNING (about 8892 400 8893 invocations.) These invocations were converted from the original 8894 ACPI_DEBUG_PRINT invocations and were not consistent. ACPICA BZ 835. 8895 8896 Example Code and Data Size: These are the sizes for the OS-independent 8897 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8898 debug version of the code includes the debug output trace mechanism and 8899 has a 8900 much larger code and data size. 8901 8902 Previous Release: 8903 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total 8904 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total 8905 Current Release: 8906 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total 8907 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total 8908 8909 2) iASL Compiler/Disassembler and Tools: 8910 8911 iASL: Implemented typechecking support for static (non-control method) 8912 predefined named objects that are declared with the Name() operator. For 8913 example, the type of this object is now validated to be of type Integer: 8914 Name(_BBN, 1). This change migrates the compiler to using the core 8915 predefined 8916 name table instead of maintaining a local version. Added a new file, 8917 aslpredef.c. ACPICA BZ 832. 8918 8919 Disassembler: Added support for the ACPI 4.0 MCHI table. 8920 8921 ---------------------------------------- 8922 21 January 2010. Summary of changes for version 20100121: 8923 8924 1) ACPI CA Core Subsystem: 8925 8926 Added the 2010 copyright to all module headers and signons. This affects 8927 virtually every file in the ACPICA core subsystem, the iASL compiler, the 8928 tools/utilities, and the test suites. 8929 8930 Implemented a change to the AcpiGetDevices interface to eliminate 8931 unnecessary 8932 invocations of the _STA method. In the case where a specific _HID is 8933 requested, do not run _STA until a _HID match is found. This eliminates 8934 potentially dozens of _STA calls during a search for a particular 8935 device/HID, 8936 which in turn can improve boot times. ACPICA BZ 828. Lin Ming. 8937 8938 Implemented an additional repair for predefined method return values. 8939 Attempt 8940 to repair unexpected NULL elements within returned Package objects. 8941 Create 8942 an 8943 Integer of value zero, a NULL String, or a zero-length Buffer as 8944 appropriate. 8945 ACPICA BZ 818. Lin Ming, Bob Moore. 8946 8947 Removed the obsolete ACPI_INTEGER data type. This type was introduced as 8948 the 8949 code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0 8950 (with 8951 64-bit AML integers). It is now obsolete and this change removes it from 8952 the 8953 ACPICA code base, replaced by UINT64. The original typedef has been 8954 retained 8955 for now for compatibility with existing device driver code. ACPICA BZ 8956 824. 8957 8958 Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field 8959 in 8960 the parse tree object. 8961 8962 Added additional warning options for the gcc-4 generation. Updated the 8963 source 8964 accordingly. This includes some code restructuring to eliminate 8965 unreachable 8966 code, elimination of some gotos, elimination of unused return values, 8967 some 8968 additional casting, and removal of redundant declarations. 8969 8970 Example Code and Data Size: These are the sizes for the OS-independent 8971 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8972 debug version of the code includes the debug output trace mechanism and 8973 has a 8974 much larger code and data size. 8975 8976 Previous Release: 8977 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 8978 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 8979 Current Release: 8980 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total 8981 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total 8982 8983 2) iASL Compiler/Disassembler and Tools: 8984 8985 No functional changes for this release. 8986 8987 ---------------------------------------- 8988 14 December 2009. Summary of changes for version 20091214: 8989 8990 1) ACPI CA Core Subsystem: 8991 8992 Enhanced automatic data type conversions for predefined name repairs. 8993 This 8994 change expands the automatic repairs/conversions for predefined name 8995 return 8996 values to make Integers, Strings, and Buffers fully interchangeable. 8997 Also, 8998 a 8999 Buffer can be converted to a Package of Integers if necessary. The 9000 nsrepair.c 9001 module was completely restructured. Lin Ming, Bob Moore. 9002 9003 Implemented automatic removal of null package elements during predefined 9004 name 9005 repairs. This change will automatically remove embedded and trailing NULL 9006 package elements from returned package objects that are defined to 9007 contain 9008 a 9009 variable number of sub-packages. The driver is then presented with a 9010 package 9011 with no null elements to deal with. ACPICA BZ 819. 9012 9013 Implemented a repair for the predefined _FDE and _GTM names. The expected 9014 return value for both names is a Buffer of 5 DWORDs. This repair fixes 9015 two 9016 possible problems (both seen in the field), where a package of integers 9017 is 9018 returned, or a buffer of BYTEs is returned. With assistance from Jung-uk 9019 Kim. 9020 9021 Implemented additional module-level code support. This change will 9022 properly 9023 execute module-level code that is not at the root of the namespace (under 9024 a 9025 Device object, etc.). Now executes the code within the current scope 9026 instead 9027 of the root. ACPICA BZ 762. Lin Ming. 9028 9029 Fixed possible mutex acquisition errors when running _REG methods. Fixes 9030 a 9031 problem where mutex errors can occur when running a _REG method that is 9032 in 9033 the same scope as a method-defined operation region or an operation 9034 region 9035 under a module-level IF block. This type of code is rare, so the problem 9036 has 9037 not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore. 9038 9039 Fixed a possible memory leak during module-level code execution. An 9040 object 9041 could be leaked for each block of executed module-level code if the 9042 interpreter slack mode is enabled This change deletes any implicitly 9043 returned 9044 object from the module-level code block. Lin Ming. 9045 9046 Removed messages for successful predefined repair(s). The repair 9047 mechanism 9048 was considered too wordy. Now, messages are only unconditionally emitted 9049 if 9050 the return object cannot be repaired. Existing messages for successful 9051 repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ 9052 827. 9053 9054 Example Code and Data Size: These are the sizes for the OS-independent 9055 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9056 debug version of the code includes the debug output trace mechanism and 9057 has a 9058 much larger code and data size. 9059 9060 Previous Release: 9061 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 9062 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 9063 Current Release: 9064 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 9065 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 9066 9067 2) iASL Compiler/Disassembler and Tools: 9068 9069 iASL: Fixed a regression introduced in 20091112 where intermediate .SRC 9070 files 9071 were no longer automatically removed at the termination of the compile. 9072 9073 acpiexec: Implemented the -f option to specify default region fill value. 9074 This option specifies the value used to initialize buffers that simulate 9075 operation regions. Default value is zero. Useful for debugging problems 9076 that 9077 depend on a specific initial value for a region or field. 9078 9079 ---------------------------------------- 9080 12 November 2009. Summary of changes for version 20091112: 9081 9082 1) ACPI CA Core Subsystem: 9083 9084 Implemented a post-order callback to AcpiWalkNamespace. The existing 9085 interface only has a pre-order callback. This change adds an additional 9086 parameter for a post-order callback which will be more useful for bus 9087 scans. 9088 ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference. 9089 9090 Modified the behavior of the operation region memory mapping cache for 9091 SystemMemory. Ensure that the memory mappings created for operation 9092 regions 9093 do not cross 4K page boundaries. Crossing a page boundary while mapping 9094 regions can cause kernel warnings on some hosts if the pages have 9095 different 9096 attributes. Such regions are probably BIOS bugs, and this is the 9097 workaround. 9098 Linux BZ 14445. Lin Ming. 9099 9100 Implemented an automatic repair for predefined methods that must return 9101 sorted lists. This change will repair (by sorting) packages returned by 9102 _ALR, 9103 _PSS, and _TSS. Drivers can now assume that the packages are correctly 9104 sorted 9105 and do not contain NULL package elements. Adds one new file, 9106 namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore. 9107 9108 Fixed a possible fault during predefined name validation if a return 9109 Package 9110 object contains NULL elements. Also adds a warning if a NULL element is 9111 followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement 9112 may 9113 include repair or removal of all such NULL elements where possible. 9114 9115 Implemented additional module-level executable AML code support. This 9116 change 9117 will execute module-level code that is not at the root of the namespace 9118 (under a Device object, etc.) at table load time. Module-level executable 9119 AML 9120 code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming. 9121 9122 Implemented a new internal function to create Integer objects. This 9123 function 9124 simplifies miscellaneous object creation code. ACPICA BZ 823. 9125 9126 Reduced the severity of predefined repair messages, Warning to Info. 9127 Since 9128 the object was successfully repaired, a warning is too severe. Reduced to 9129 an 9130 info message for now. These messages may eventually be changed to debug- 9131 only. 9132 ACPICA BZ 812. 9133 9134 Example Code and Data Size: These are the sizes for the OS-independent 9135 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9136 debug version of the code includes the debug output trace mechanism and 9137 has a 9138 much larger code and data size. 9139 9140 Previous Release: 9141 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 9142 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 9143 Current Release: 9144 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 9145 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 9146 9147 2) iASL Compiler/Disassembler and Tools: 9148 9149 iASL: Implemented Switch() with While(1) so that Break works correctly. 9150 This 9151 change correctly implements the Switch operator with a surrounding 9152 While(1) 9153 so that the Break operator works as expected. ACPICA BZ 461. Lin Ming. 9154 9155 iASL: Added a message if a package initializer list is shorter than 9156 package 9157 length. Adds a new remark for a Package() declaration if an initializer 9158 list 9159 exists, but is shorter than the declared length of the package. Although 9160 technically legal, this is probably a coding error and it is seen in the 9161 field. ACPICA BZ 815. Lin Ming, Bob Moore. 9162 9163 iASL: Fixed a problem where the compiler could fault after the maximum 9164 number 9165 of errors was reached (200). 9166 9167 acpixtract: Fixed a possible warning for pointer cast if the compiler 9168 warning 9169 level set very high. 9170 9171 ---------------------------------------- 9172 13 October 2009. Summary of changes for version 20091013: 9173 9174 1) ACPI CA Core Subsystem: 9175 9176 Fixed a problem where an Operation Region _REG method could be executed 9177 more 9178 than once. If a custom address space handler is installed by the host 9179 before 9180 the "initialize operation regions" phase of the ACPICA initialization, 9181 any 9182 _REG methods for that address space could be executed twice. This change 9183 fixes the problem. ACPICA BZ 427. Lin Ming. 9184 9185 Fixed a possible memory leak for the Scope() ASL operator. When the exact 9186 invocation of "Scope(\)" is executed (change scope to root), one internal 9187 operand object was leaked. Lin Ming. 9188 9189 Implemented a run-time repair for the _MAT predefined method. If the _MAT 9190 return value is defined as a Field object in the AML, and the field 9191 size is less than or equal to the default width of an integer (32 or 9192 64),_MAT 9193 can incorrectly return an Integer instead of a Buffer. ACPICA now 9194 automatically repairs this problem. ACPICA BZ 810. 9195 9196 Implemented a run-time repair for the _BIF and _BIX predefined methods. 9197 The 9198 "OEM Information" field is often incorrectly returned as an Integer with 9199 value zero if the field is not supported by the platform. This is due to 9200 an 9201 ambiguity in the ACPI specification. The field should always be a string. 9202 ACPICA now automatically repairs this problem by returning a NULL string 9203 within the returned Package. ACPICA BZ 807. 9204 9205 Example Code and Data Size: These are the sizes for the OS-independent 9206 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9207 debug version of the code includes the debug output trace mechanism and 9208 has a 9209 much larger code and data size. 9210 9211 Previous Release: 9212 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 9213 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 9214 Current Release: 9215 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 9216 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 9217 9218 2) iASL Compiler/Disassembler and Tools: 9219 9220 Disassembler: Fixed a problem where references to external symbols that 9221 contained one or more parent-prefixes (carats) were not handled 9222 correctly, 9223 possibly causing a fault. ACPICA BZ 806. Lin Ming. 9224 9225 Disassembler: Restructured the code so that all functions that handle 9226 external symbols are in a single module. One new file is added, 9227 common/dmextern.c. 9228 9229 AML Debugger: Added a max count argument for the Batch command (which 9230 executes multiple predefined methods within the namespace.) 9231 9232 iASL: Updated the compiler documentation (User Reference.) Available at 9233 http://www.acpica.org/documentation/. ACPICA BZ 750. 9234 9235 AcpiXtract: Updated for Lint and other formatting changes. Close all open 9236 files. 9237 9238 ---------------------------------------- 9239 03 September 2009. Summary of changes for version 20090903: 9240 9241 1) ACPI CA Core Subsystem: 9242 9243 For Windows Vista compatibility, added the automatic execution of an _INI 9244 method located at the namespace root (\_INI). This method is executed at 9245 table load time. This support is in addition to the automatic execution 9246 of 9247 \_SB._INI. Lin Ming. 9248 9249 Fixed a possible memory leak in the interpreter for AML package objects 9250 if 9251 the package initializer list is longer than the defined size of the 9252 package. 9253 This apparently can only happen if the BIOS changes the package size on 9254 the 9255 fly (seen in a _PSS object), as ASL compilers do not allow this. The 9256 interpreter will truncate the package to the defined size (and issue an 9257 error 9258 message), but previously could leave the extra objects undeleted if they 9259 were 9260 pre-created during the argument processing (such is the case if the 9261 package 9262 consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805. 9263 9264 Fixed a problem seen when a Buffer or String is stored to itself via ASL. 9265 This has been reported in the field. Previously, ACPICA would zero out 9266 the 9267 buffer/string. Now, the operation is treated as a noop. Provides Windows 9268 compatibility. ACPICA BZ 803. Lin Ming. 9269 9270 Removed an extraneous error message for ASL constructs of the form 9271 Store(LocalX,LocalX) when LocalX is uninitialized. These curious 9272 statements 9273 are seen in many BIOSs and are once again treated as NOOPs and no error 9274 is 9275 emitted when they are encountered. ACPICA BZ 785. 9276 9277 Fixed an extraneous warning message if a _DSM reserved method returns a 9278 Package object. _DSM can return any type of object, so validation on the 9279 return type cannot be performed. ACPICA BZ 802. 9280 9281 Example Code and Data Size: These are the sizes for the OS-independent 9282 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9283 debug version of the code includes the debug output trace mechanism and 9284 has a 9285 much larger code and data size. 9286 9287 Previous Release: 9288 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 9289 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 9290 Current Release: 9291 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 9292 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 9293 9294 2) iASL Compiler/Disassembler and Tools: 9295 9296 iASL: Fixed a problem with the use of the Alias operator and Resource 9297 Templates. The correct alias is now constructed and no error is emitted. 9298 ACPICA BZ 738. 9299 9300 iASL: Implemented the -I option to specify additional search directories 9301 for 9302 include files. Allows multiple additional search paths for include files. 9303 Directories are searched in the order specified on the command line 9304 (after 9305 the local directory is searched.) ACPICA BZ 800. 9306 9307 iASL: Fixed a problem where the full pathname for include files was not 9308 emitted for warnings/errors. This caused the IDE support to not work 9309 properly. ACPICA BZ 765. 9310 9311 iASL: Implemented the -@ option to specify a Windows-style response file 9312 containing additional command line options. ACPICA BZ 801. 9313 9314 AcpiExec: Added support to load multiple AML files simultaneously (such 9315 as 9316 a 9317 DSDT and multiple SSDTs). Also added support for wildcards within the AML 9318 pathname. These features allow all machine tables to be easily loaded and 9319 debugged together. ACPICA BZ 804. 9320 9321 Disassembler: Added missing support for disassembly of HEST table Error 9322 Bank 9323 subtables. 9324 9325 ---------------------------------------- 9326 30 July 2009. Summary of changes for version 20090730: 9327 9328 The ACPI 4.0 implementation for ACPICA is complete with this release. 9329 9330 1) ACPI CA Core Subsystem: 9331 9332 ACPI 4.0: Added header file support for all new and changed ACPI tables. 9333 Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are 9334 new 9335 for ACPI 4.0, but have previously been supported in ACPICA are: CPEP, 9336 BERT, 9337 EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT. 9338 There 9339 have been some ACPI 4.0 changes to other existing tables. Split the large 9340 actbl1.h header into the existing actbl2.h header. ACPICA BZ 774. 9341 9342 ACPI 4.0: Implemented predefined name validation for all new names. There 9343 are 9344 31 new names in ACPI 4.0. The predefined validation module was split into 9345 two 9346 files. The new file is namespace/nsrepair.c. ACPICA BZ 770. 9347 9348 Implemented support for so-called "module-level executable code". This is 9349 executable AML code that exists outside of any control method and is 9350 intended 9351 to be executed at table load time. Although illegal since ACPI 2.0, this 9352 type 9353 of code still exists and is apparently still being created. Blocks of 9354 this 9355 code are now detected and executed as intended. Currently, the code 9356 blocks 9357 must exist under either an If, Else, or While construct; these are the 9358 typical cases seen in the field. ACPICA BZ 762. Lin Ming. 9359 9360 Implemented an automatic dynamic repair for predefined names that return 9361 nested Package objects. This applies to predefined names that are defined 9362 to 9363 return a variable-length Package of sub-packages. If the number of sub- 9364 packages is one, BIOS code is occasionally seen that creates a simple 9365 single 9366 package with no sub-packages. This code attempts to fix the problem by 9367 wrapping a new package object around the existing package. These methods 9368 can 9369 be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA 9370 BZ 9371 790. 9372 9373 Fixed a regression introduced in 20090625 for the AcpiGetDevices 9374 interface. 9375 The _HID/_CID matching was broken and no longer matched IDs correctly. 9376 ACPICA 9377 BZ 793. 9378 9379 Fixed a problem with AcpiReset where the reset would silently fail if the 9380 register was one of the protected I/O ports. AcpiReset now bypasses the 9381 port 9382 validation mechanism. This may eventually be driven into the 9383 AcpiRead/Write 9384 interfaces. 9385 9386 Fixed a regression related to the recent update of the AcpiRead/Write 9387 interfaces. A sleep/suspend could fail if the optional PM2 Control 9388 register 9389 does not exist during an attempt to write the Bus Master Arbitration bit. 9390 (However, some hosts already delete the code that writes this bit, and 9391 the 9392 code may in fact be obsolete at this date.) ACPICA BZ 799. 9393 9394 Fixed a problem where AcpiTerminate could fault if inadvertently called 9395 twice 9396 in succession. ACPICA BZ 795. 9397 9398 Example Code and Data Size: These are the sizes for the OS-independent 9399 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9400 debug version of the code includes the debug output trace mechanism and 9401 has a 9402 much larger code and data size. 9403 9404 Previous Release: 9405 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 9406 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 9407 Current Release: 9408 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 9409 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 9410 9411 2) iASL Compiler/Disassembler and Tools: 9412 9413 ACPI 4.0: Implemented disassembler support for all new ACPI tables and 9414 changes to existing tables. ACPICA BZ 775. 9415 9416 ---------------------------------------- 9417 25 June 2009. Summary of changes for version 20090625: 9418 9419 The ACPI 4.0 Specification was released on June 16 and is available at 9420 www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will 9421 continue for the next few releases. 9422 9423 1) ACPI CA Core Subsystem: 9424 9425 ACPI 4.0: Implemented interpreter support for the IPMI operation region 9426 address space. Includes support for bi-directional data buffers and an 9427 IPMI 9428 address space handler (to be installed by an IPMI device driver.) ACPICA 9429 BZ 9430 773. Lin Ming. 9431 9432 ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT. 9433 Includes 9434 support in both the header files and the disassembler. 9435 9436 Completed a major update for the AcpiGetObjectInfo external interface. 9437 Changes include: 9438 - Support for variable, unlimited length HID, UID, and CID strings. 9439 - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA, 9440 etc.) 9441 - Call the _SxW power methods on behalf of a device object. 9442 - Determine if a device is a PCI root bridge. 9443 - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO. 9444 These changes will require an update to all callers of this interface. 9445 See 9446 the updated ACPICA Programmer Reference for details. One new source file 9447 has 9448 been added - utilities/utids.c. ACPICA BZ 368, 780. 9449 9450 Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit 9451 transfers. The Value parameter has been extended from 32 bits to 64 bits 9452 in 9453 order to support new ACPI 4.0 tables. These changes will require an 9454 update 9455 to 9456 all callers of these interfaces. See the ACPICA Programmer Reference for 9457 details. ACPICA BZ 768. 9458 9459 Fixed several problems with AcpiAttachData. The handler was not invoked 9460 when 9461 the host node was deleted. The data sub-object was not automatically 9462 deleted 9463 when the host node was deleted. The interface to the handler had an 9464 unused 9465 parameter, this was removed. ACPICA BZ 778. 9466 9467 Enhanced the function that dumps ACPI table headers. All non-printable 9468 characters in the string fields are now replaced with '?' (Signature, 9469 OemId, 9470 OemTableId, and CompilerId.) ACPI tables with non-printable characters in 9471 these fields are occasionally seen in the field. ACPICA BZ 788. 9472 9473 Fixed a problem with predefined method repair code where the code that 9474 attempts to repair/convert an object of incorrect type is only executed 9475 on 9476 the first time the predefined method is called. The mechanism that 9477 disables 9478 warnings on subsequent calls was interfering with the repair mechanism. 9479 ACPICA BZ 781. 9480 9481 Fixed a possible memory leak in the predefined validation/repair code 9482 when 9483 a 9484 buffer is automatically converted to an expected string object. 9485 9486 Removed obsolete 16-bit files from the distribution and from the current 9487 git 9488 tree head. ACPICA BZ 776. 9489 9490 Example Code and Data Size: These are the sizes for the OS-independent 9491 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9492 debug version of the code includes the debug output trace mechanism and 9493 has a 9494 much larger code and data size. 9495 9496 Previous Release: 9497 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 9498 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 9499 Current Release: 9500 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 9501 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 9502 9503 2) iASL Compiler/Disassembler and Tools: 9504 9505 ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI 9506 operation region keyword. ACPICA BZ 771, 772. Lin Ming. 9507 9508 ACPI 4.0: iASL - implemented compile-time validation support for all new 9509 predefined names and control methods (31 total). ACPICA BZ 769. 9510 9511 ---------------------------------------- 9512 21 May 2009. Summary of changes for version 20090521: 9513 9514 1) ACPI CA Core Subsystem: 9515 9516 Disabled the preservation of the SCI enable bit in the PM1 control 9517 register. 9518 The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification 9519 to 9520 be 9521 a "preserved" bit - "OSPM always preserves this bit position", section 9522 4.7.3.2.1. However, some machines fail if this bit is in fact preserved 9523 because the bit needs to be explicitly set by the OS as a workaround. No 9524 machines fail if the bit is not preserved. Therefore, ACPICA no longer 9525 attempts to preserve this bit. 9526 9527 Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or 9528 incorrectly formed _PRT package could cause a fault. Added validation to 9529 ensure that each package element is actually a sub-package. 9530 9531 Implemented a new interface to install or override a single control 9532 method, 9533 AcpiInstallMethod. This interface is useful when debugging in order to 9534 repair 9535 an existing method or to install a missing method without having to 9536 override 9537 the entire ACPI table. See the ACPICA Programmer Reference for use and 9538 examples. Lin Ming, Bob Moore. 9539 9540 Fixed several reference count issues with the DdbHandle object that is 9541 created from a Load or LoadTable operator. Prevent premature deletion of 9542 the 9543 object. Also, mark the object as invalid once the table has been 9544 unloaded. 9545 This is needed because the handle itself may not be deleted after the 9546 table 9547 unload, depending on whether it has been stored in a named object by the 9548 caller. Lin Ming. 9549 9550 Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple 9551 mutexes of the same sync level are acquired but then not released in 9552 strict 9553 opposite order, the internally maintained Current Sync Level becomes 9554 confused 9555 and can cause subsequent execution errors. ACPICA BZ 471. 9556 9557 Changed the allowable release order for ASL mutex objects. The ACPI 4.0 9558 specification has been changed to make the SyncLevel for mutex objects 9559 more 9560 useful. When releasing a mutex, the SyncLevel of the mutex must now be 9561 the 9562 same as the current sync level. This makes more sense than the previous 9563 rule 9564 (SyncLevel less than or equal). This change updates the code to match the 9565 specification. 9566 9567 Fixed a problem with the local version of the AcpiOsPurgeCache function. 9568 The 9569 (local) cache must be locked during all cache object deletions. Andrew 9570 Baumann. 9571 9572 Updated the Load operator to use operation region interfaces. This 9573 replaces 9574 direct memory mapping with region access calls. Now, all region accesses 9575 go 9576 through the installed region handler as they should. 9577 9578 Simplified and optimized the NsGetNextNode function. Reduced parameter 9579 count 9580 and reduced code for this frequently used function. 9581 9582 Example Code and Data Size: These are the sizes for the OS-independent 9583 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9584 debug version of the code includes the debug output trace mechanism and 9585 has a 9586 much larger code and data size. 9587 9588 Previous Release: 9589 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 9590 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 9591 Current Release: 9592 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 9593 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 9594 9595 2) iASL Compiler/Disassembler and Tools: 9596 9597 Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some 9598 problems 9599 with sub-table disassembly and handling invalid sub-tables. Attempt 9600 recovery 9601 after an invalid sub-table ID. 9602 9603 ---------------------------------------- 9604 22 April 2009. Summary of changes for version 20090422: 9605 9606 1) ACPI CA Core Subsystem: 9607 9608 Fixed a compatibility issue with the recently released I/O port 9609 protection 9610 mechanism. For windows compatibility, 1) On a port protection violation, 9611 simply ignore the request and do not return an exception (allow the 9612 control 9613 method to continue execution.) 2) If only part of the request overlaps a 9614 protected port, read/write the individual ports that are not protected. 9615 Linux 9616 BZ 13036. Lin Ming 9617 9618 Enhanced the execution of the ASL/AML BreakPoint operator so that it 9619 actually 9620 breaks into the AML debugger if the debugger is present. This matches the 9621 ACPI-defined behavior. 9622 9623 Fixed several possible warnings related to the use of the configurable 9624 ACPI_THREAD_ID. This type can now be configured as either an integer or a 9625 pointer with no warnings. Also fixes several warnings in printf-like 9626 statements for the 64-bit build when the type is configured as a pointer. 9627 ACPICA BZ 766, 767. 9628 9629 Fixed a number of possible warnings when compiling with gcc 4+ (depending 9630 on 9631 warning options.) Examples include printf formats, aliasing, unused 9632 globals, 9633 missing prototypes, missing switch default statements, use of non-ANSI 9634 library functions, use of non-ANSI constructs. See generate/unix/Makefile 9635 for 9636 a list of warning options used with gcc 3 and 4. ACPICA BZ 735. 9637 9638 Example Code and Data Size: These are the sizes for the OS-independent 9639 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9640 debug version of the code includes the debug output trace mechanism and 9641 has a 9642 much larger code and data size. 9643 9644 Previous Release: 9645 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 9646 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 9647 Current Release: 9648 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 9649 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 9650 9651 2) iASL Compiler/Disassembler and Tools: 9652 9653 iASL: Fixed a generation warning from Bison 2.3 and fixed several 9654 warnings 9655 on 9656 the 64-bit build. 9657 9658 iASL: Fixed a problem where the Unix/Linux versions of the compiler could 9659 not 9660 correctly digest Windows/DOS formatted files (with CR/LF). 9661 9662 iASL: Added a new option for "quiet mode" (-va) that produces only the 9663 compilation summary, not individual errors and warnings. Useful for large 9664 batch compilations. 9665 9666 AcpiExec: Implemented a new option (-z) to enable a forced 9667 semaphore/mutex 9668 timeout that can be used to detect hang conditions during execution of 9669 AML 9670 code (includes both internal semaphores and AML-defined mutexes and 9671 events.) 9672 9673 Added new makefiles for the generation of acpica in a generic unix-like 9674 environment. These makefiles are intended to generate the acpica tools 9675 and 9676 utilities from the original acpica git source tree structure. 9677 9678 Test Suites: Updated and cleaned up the documentation files. Updated the 9679 copyrights to 2009, affecting all source files. Use the new version of 9680 iASL 9681 with quiet mode. Increased the number of available semaphores in the 9682 Windows 9683 OSL, allowing the aslts to execute fully on Windows. For the Unix OSL, 9684 added 9685 an alternate implementation of the semaphore timeout to allow aslts to 9686 execute fully on Cygwin. 9687 9688 ---------------------------------------- 9689 20 March 2009. Summary of changes for version 20090320: 9690 9691 1) ACPI CA Core Subsystem: 9692 9693 Fixed a possible race condition between AcpiWalkNamespace and dynamic 9694 table 9695 unloads. Added a reader/writer locking mechanism to allow multiple 9696 concurrent 9697 namespace walks (readers), but block a dynamic table unload until it can 9698 gain 9699 exclusive write access to the namespace. This fixes a problem where a 9700 table 9701 unload could (possibly catastrophically) delete the portion of the 9702 namespace 9703 that is currently being examined by a walk. Adds a new file, utlock.c, 9704 that 9705 implements the reader/writer lock mechanism. ACPICA BZ 749. 9706 9707 Fixed a regression introduced in version 20090220 where a change to the 9708 FADT 9709 handling could cause the ACPICA subsystem to access non-existent I/O 9710 ports. 9711 9712 Modified the handling of FADT register and table (FACS/DSDT) addresses. 9713 The 9714 FADT can contain both 32-bit and 64-bit versions of these addresses. 9715 Previously, the 64-bit versions were favored, meaning that if both 32 and 9716 64 9717 versions were valid, but not equal, the 64-bit version was used. This was 9718 found to cause some machines to fail. Now, in this case, the 32-bit 9719 version 9720 is used instead. This now matches the Windows behavior. 9721 9722 Implemented a new mechanism to protect certain I/O ports. Provides 9723 Microsoft 9724 compatibility and protects the standard PC I/O ports from access via AML 9725 code. Adds a new file, hwvalid.c 9726 9727 Fixed a possible extraneous warning message from the FADT support. The 9728 message warns of a 32/64 length mismatch between the legacy and GAS 9729 definitions for a register. 9730 9731 Removed the obsolete AcpiOsValidateAddress OSL interface. This interface 9732 is 9733 made obsolete by the port protection mechanism above. It was previously 9734 used 9735 to validate the entire address range of an operation region, which could 9736 be 9737 incorrect if the range included illegal ports, but fields within the 9738 operation region did not actually access those ports. Validation is now 9739 performed on a per-field basis instead of the entire region. 9740 9741 Modified the handling of the PM1 Status Register ignored bit (bit 11.) 9742 Ignored bits must be "preserved" according to the ACPI spec. Usually, 9743 this 9744 means a read/modify/write when writing to the register. However, for 9745 status 9746 registers, writing a one means clear the event. Writing a zero means 9747 preserve 9748 the event (do not clear.) This behavior is clarified in the ACPI 4.0 9749 spec, 9750 and the ACPICA code now simply always writes a zero to the ignored bit. 9751 9752 Modified the handling of ignored bits for the PM1 A/B Control Registers. 9753 As 9754 per the ACPI specification, for the control registers, preserve 9755 (read/modify/write) all bits that are defined as either reserved or 9756 ignored. 9757 9758 Updated the handling of write-only bits in the PM1 A/B Control Registers. 9759 When reading the register, zero the write-only bits as per the ACPI spec. 9760 ACPICA BZ 443. Lin Ming. 9761 9762 Removed "Linux" from the list of supported _OSI strings. Linux no longer 9763 wants to reply true to this request. The Windows strings are the only 9764 paths 9765 through the AML that are tested and known to work properly. 9766 9767 Previous Release: 9768 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 9769 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 9770 Current Release: 9771 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 9772 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 9773 9774 2) iASL Compiler/Disassembler and Tools: 9775 9776 Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c 9777 and 9778 aetables.c 9779 9780 ---------------------------------------- 9781 20 February 2009. Summary of changes for version 20090220: 9782 9783 1) ACPI CA Core Subsystem: 9784 9785 Optimized the ACPI register locking. Removed locking for reads from the 9786 ACPI 9787 bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock 9788 is 9789 not required when reading the single-bit registers. The 9790 AcpiGetRegisterUnlocked function is no longer needed and has been 9791 removed. 9792 This will improve performance for reads on these registers. ACPICA BZ 9793 760. 9794 9795 Fixed the parameter validation for AcpiRead/Write. Now return 9796 AE_BAD_PARAMETER if the input register pointer is null, and 9797 AE_BAD_ADDRESS 9798 if 9799 the register has an address of zero. Previously, these cases simply 9800 returned 9801 AE_OK. For optional registers such as PM1B status/enable/control, the 9802 caller 9803 should check for a valid register address before calling. ACPICA BZ 748. 9804 9805 Renamed the external ACPI bit register access functions. Renamed 9806 AcpiGetRegister and AcpiSetRegister to clarify the purpose of these 9807 functions. The new names are AcpiReadBitRegister and 9808 AcpiWriteBitRegister. 9809 Also, restructured the code for these functions by simplifying the code 9810 path 9811 and condensing duplicate code to reduce code size. 9812 9813 Added new functions to transparently handle the possibly split PM1 A/B 9814 registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two 9815 functions 9816 now handle the split registers for PM1 Status, Enable, and Control. 9817 ACPICA 9818 BZ 9819 746. 9820 9821 Added a function to handle the PM1 control registers, 9822 AcpiHwWritePm1Control. 9823 This function writes both of the PM1 control registers (A/B). These 9824 registers 9825 are different than the PM1 A/B status and enable registers in that 9826 different 9827 values can be written to the A/B registers. Most notably, the SLP_TYP 9828 bits 9829 can be different, as per the values returned from the _Sx predefined 9830 methods. 9831 9832 Removed an extra register write within AcpiHwClearAcpiStatus. This 9833 function 9834 was writing an optional PM1B status register twice. The existing call to 9835 the 9836 low-level AcpiHwRegisterWrite automatically handles a possibly split PM1 9837 A/B 9838 register. ACPICA BZ 751. 9839 9840 Split out the PM1 Status registers from the FADT. Added new globals for 9841 these 9842 registers (A/B), similar to the way the PM1 Enable registers are handled. 9843 Instead of overloading the FADT Event Register blocks. This makes the 9844 code 9845 clearer and less prone to error. 9846 9847 Fixed the warning message for when the platform contains too many ACPI 9848 tables 9849 for the default size of the global root table data structure. The 9850 calculation 9851 for the truncation value was incorrect. 9852 9853 Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this 9854 obsolete macro, since it is now a simple reference to ->common.type. 9855 There 9856 were about 150 invocations of the macro across 41 files. ACPICA BZ 755. 9857 9858 Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as 9859 TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to 9860 simply SLEEP_TYPE. ACPICA BZ 754. 9861 9862 Conditionally compile the AcpiSetFirmwareWakingVector64 function. This 9863 function is only needed on 64-bit host operating systems and is thus not 9864 included for 32-bit hosts. 9865 9866 Debug output: print the input and result for invocations of the _OSI 9867 reserved 9868 control method via the ACPI_LV_INFO debug level. Also, reduced some of 9869 the 9870 verbosity of this debug level. Len Brown. 9871 9872 Example Code and Data Size: These are the sizes for the OS-independent 9873 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9874 debug version of the code includes the debug output trace mechanism and 9875 has a 9876 much larger code and data size. 9877 9878 Previous Release: 9879 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 9880 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 9881 Current Release: 9882 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 9883 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 9884 9885 2) iASL Compiler/Disassembler and Tools: 9886 9887 Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the 9888 various legal performance profiles. 9889 9890 ---------------------------------------- 9891 23 January 2009. Summary of changes for version 20090123: 9892 9893 1) ACPI CA Core Subsystem: 9894 9895 Added the 2009 copyright to all module headers and signons. This affects 9896 virtually every file in the ACPICA core subsystem, the iASL compiler, and 9897 the tools/utilities. 9898 9899 Implemented a change to allow the host to override any ACPI table, 9900 including 9901 dynamically loaded tables. Previously, only the DSDT could be replaced by 9902 the 9903 host. With this change, the AcpiOsTableOverride interface is called for 9904 each 9905 table found in the RSDT/XSDT during ACPICA initialization, and also 9906 whenever 9907 a table is dynamically loaded via the AML Load operator. 9908 9909 Updated FADT flag definitions, especially the Boot Architecture flags. 9910 9911 Debugger: For the Find command, automatically pad the input ACPI name 9912 with 9913 underscores if the name is shorter than 4 characters. This enables a 9914 match 9915 with the actual namespace entry which is itself padded with underscores. 9916 9917 Example Code and Data Size: These are the sizes for the OS-independent 9918 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9919 debug version of the code includes the debug output trace mechanism and 9920 has a 9921 much larger code and data size. 9922 9923 Previous Release: 9924 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 9925 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 9926 Current Release: 9927 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 9928 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 9929 9930 2) iASL Compiler/Disassembler and Tools: 9931 9932 Fix build error under Bison-2.4. 9933 9934 Disassembler: Enhanced FADT support. Added decoding of the Boot 9935 Architecture 9936 flags. Now decode all flags, regardless of the FADT version. Flag output 9937 includes the FADT version which first defined each flag. 9938 9939 The iASL -g option now dumps the RSDT to a file (in addition to the FADT 9940 and 9941 DSDT). Windows only. 9942 9943 ---------------------------------------- 9944 04 December 2008. Summary of changes for version 20081204: 9945 9946 1) ACPI CA Core Subsystem: 9947 9948 The ACPICA Programmer Reference has been completely updated and revamped 9949 for 9950 this release. This includes updates to the external interfaces, OSL 9951 interfaces, the overview sections, and the debugger reference. 9952 9953 Several new ACPICA interfaces have been implemented and documented in the 9954 programmer reference: 9955 AcpiReset - Writes the reset value to the FADT-defined reset register. 9956 AcpiDisableAllGpes - Disable all available GPEs. 9957 AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs. 9958 AcpiGetGpeDevice - Get the GPE block device associated with a GPE. 9959 AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs. 9960 AcpiRead - Low-level read ACPI register (was HwLowLevelRead.) 9961 AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.) 9962 9963 Most of the public ACPI hardware-related interfaces have been moved to a 9964 new 9965 file, components/hardware/hwxface.c 9966 9967 Enhanced the FADT parsing and low-level ACPI register access: The ACPI 9968 register lengths within the FADT are now used, and the low level ACPI 9969 register access no longer hardcodes the ACPI register lengths. Given that 9970 there may be some risk in actually trusting the FADT register lengths, a 9971 run- 9972 time option was added to fall back to the default hardcoded lengths if 9973 the 9974 FADT proves to contain incorrect values - UseDefaultRegisterWidths. This 9975 option is set to true for now, and a warning is issued if a suspicious 9976 FADT 9977 register length is overridden with the default value. 9978 9979 Fixed a reference count issue in NsRepairObject. This problem was 9980 introduced 9981 in version 20081031 as part of a fix to repair Buffer objects within 9982 Packages. Lin Ming. 9983 9984 Added semaphore support to the Linux/Unix application OS-services layer 9985 (OSL). ACPICA BZ 448. Lin Ming. 9986 9987 Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes 9988 will 9989 be implemented in the OSL, or will binary semaphores be used instead. 9990 9991 Example Code and Data Size: These are the sizes for the OS-independent 9992 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9993 debug version of the code includes the debug output trace mechanism and 9994 has a 9995 much larger code and data size. 9996 9997 Previous Release: 9998 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 9999 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 10000 Current Release: 10001 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 10002 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 10003 10004 2) iASL Compiler/Disassembler and Tools: 10005 10006 iASL: Completed the '-e' option to include additional ACPI tables in 10007 order 10008 to 10009 aid with disassembly and External statement generation. ACPICA BZ 742. 10010 Lin 10011 Ming. 10012 10013 iASL: Removed the "named object in while loop" error. The compiler cannot 10014 determine how many times a loop will execute. ACPICA BZ 730. 10015 10016 Disassembler: Implemented support for FADT revision 2 (MS extension). 10017 ACPICA 10018 BZ 743. 10019 10020 Disassembler: Updates for several ACPI data tables (HEST, EINJ, and 10021 MCFG). 10022 10023 ---------------------------------------- 10024 31 October 2008. Summary of changes for version 20081031: 10025 10026 1) ACPI CA Core Subsystem: 10027 10028 Restructured the ACPICA header files into public/private. acpi.h now 10029 includes 10030 only the "public" acpica headers. All other acpica headers are "private" 10031 and 10032 should not be included by acpica users. One new file, accommon.h is used 10033 to 10034 include the commonly used private headers for acpica code generation. 10035 Future 10036 plans include moving all private headers to a new subdirectory. 10037 10038 Implemented an automatic Buffer->String return value conversion for 10039 predefined ACPI methods. For these methods (such as _BIF), added 10040 automatic 10041 conversion for return objects that are required to be a String, but a 10042 Buffer 10043 was found instead. This can happen when reading string battery data from 10044 an 10045 operation region, because it used to be difficult to convert the data 10046 from 10047 buffer to string from within the ASL. Ensures that the host OS is 10048 provided 10049 with a valid null-terminated string. Linux BZ 11822. 10050 10051 Updated the FACS waking vector interfaces. Split 10052 AcpiSetFirmwareWakingVector 10053 into two: one for the 32-bit vector, another for the 64-bit vector. This 10054 is 10055 required because the host OS must setup the wake much differently for 10056 each 10057 vector (real vs. protected mode, etc.) and the interface itself should 10058 not 10059 be 10060 deciding which vector to use. Also, eliminated the 10061 GetFirmwareWakingVector 10062 interface, as it served no purpose (only the firmware reads the vector, 10063 OS 10064 only writes the vector.) ACPICA BZ 731. 10065 10066 Implemented a mechanism to escape infinite AML While() loops. Added a 10067 loop 10068 counter to force exit from AML While loops if the count becomes too 10069 large. 10070 This can occur in poorly written AML when the hardware does not respond 10071 within a while loop and the loop does not implement a timeout. The 10072 maximum 10073 loop count is configurable. A new exception code is returned when a loop 10074 is 10075 broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore. 10076 10077 Optimized the execution of AML While loops. Previously, a control state 10078 object was allocated and freed for each execution of the loop. The 10079 optimization is to simply reuse the control state for each iteration. 10080 This 10081 speeds up the raw loop execution time by about 5%. 10082 10083 Enhanced the implicit return mechanism. For Windows compatibility, return 10084 an 10085 implicit integer of value zero for methods that contain no executable 10086 code. 10087 Such methods are seen in the field as stubs (presumably), and can cause 10088 drivers to fail if they expect a return value. Lin Ming. 10089 10090 Allow multiple backslashes as root prefixes in namepaths. In a fully 10091 qualified namepath, allow multiple backslash prefixes. This can happen 10092 (and 10093 is seen in the field) because of the use of a double-backslash in strings 10094 (since backslash is the escape character) causing confusion. ACPICA BZ 10095 739 10096 Lin Ming. 10097 10098 Emit a warning if two different FACS or DSDT tables are discovered in the 10099 FADT. Checks if there are two valid but different addresses for the FACS 10100 and 10101 DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.) 10102 10103 Consolidated the method argument count validation code. Merged the code 10104 that 10105 validates control method argument counts into the predefined validation 10106 module. Eliminates possible multiple warnings for incorrect argument 10107 counts. 10108 10109 Implemented ACPICA example code. Includes code for ACPICA initialization, 10110 handler installation, and calling a control method. Available at 10111 source/tools/examples. 10112 10113 Added a global pointer for FACS table to simplify internal FACS access. 10114 Use 10115 the global pointer instead of using AcpiGetTableByIndex for each FACS 10116 access. 10117 This simplifies the code for the Global Lock and the Firmware Waking 10118 Vector(s). 10119 10120 Example Code and Data Size: These are the sizes for the OS-independent 10121 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 10122 debug version of the code includes the debug output trace mechanism and 10123 has a 10124 much larger code and data size. 10125 10126 Previous Release: 10127 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 10128 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 10129 Current Release: 10130 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 10131 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 10132 10133 2) iASL Compiler/Disassembler and Tools: 10134 10135 iASL: Improved disassembly of external method calls. Added the -e option 10136 to 10137 allow the inclusion of additional ACPI tables to help with the 10138 disassembly 10139 of 10140 method invocations and the generation of external declarations during the 10141 disassembly. Certain external method invocations cannot be disassembled 10142 properly without the actual declaration of the method. Use the -e option 10143 to 10144 include the table where the external method(s) are actually declared. 10145 Most 10146 useful for disassembling SSDTs that make method calls back to the master 10147 DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl 10148 -d 10149 -e dsdt.aml ssdt1.aml 10150 10151 iASL: Fix to allow references to aliases within ASL namepaths. Fixes a 10152 problem where the use of an alias within a namepath would result in a not 10153 found error or cause the compiler to fault. Also now allows forward 10154 references from the Alias operator itself. ACPICA BZ 738. 10155 10156 ---------------------------------------- 10157 26 September 2008. Summary of changes for version 20080926: 10158 10159 1) ACPI CA Core Subsystem: 10160 10161 Designed and implemented a mechanism to validate predefined ACPI methods 10162 and 10163 objects. This code validates the predefined ACPI objects (objects whose 10164 names 10165 start with underscore) that appear in the namespace, at the time they are 10166 evaluated. The argument count and the type of the returned object are 10167 validated against the ACPI specification. The purpose of this validation 10168 is 10169 to detect problems with the BIOS-implemented predefined ACPI objects 10170 before 10171 the results are returned to the ACPI-related drivers. Future enhancements 10172 may 10173 include actual repair of incorrect return objects where possible. Two new 10174 files are nspredef.c and acpredef.h. 10175 10176 Fixed a fault in the AML parser if a memory allocation fails during the 10177 Op 10178 completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492. 10179 10180 Fixed an issue with implicit return compatibility. This change improves 10181 the 10182 implicit return mechanism to be more compatible with the MS interpreter. 10183 Lin 10184 Ming, ACPICA BZ 349. 10185 10186 Implemented support for zero-length buffer-to-string conversions. Allow 10187 zero 10188 length strings during interpreter buffer-to-string conversions. For 10189 example, 10190 during the ToDecimalString and ToHexString operators, as well as implicit 10191 conversions. Fiodor Suietov, ACPICA BZ 585. 10192 10193 Fixed two possible memory leaks in the error exit paths of 10194 AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions 10195 are 10196 similar in that they use a stack of state objects in order to eliminate 10197 recursion. The stack must be fully unwound and deallocated if an error 10198 occurs. Lin Ming. ACPICA BZ 383. 10199 10200 Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the 10201 global 10202 ACPI register table. This bit does not exist and is unused. Lin Ming, Bob 10203 Moore ACPICA BZ 442. 10204 10205 Removed the obsolete version number in module headers. Removed the 10206 "$Revision" number that appeared in each module header. This version 10207 number 10208 was useful under SourceSafe and CVS, but has no meaning under git. It is 10209 not 10210 only incorrect, it could also be misleading. 10211 10212 Example Code and Data Size: These are the sizes for the OS-independent 10213 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 10214 debug version of the code includes the debug output trace mechanism and 10215 has a 10216 much larger code and data size. 10217 10218 Previous Release: 10219 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 10220 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 10221 Current Release: 10222 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 10223 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 10224 10225 ---------------------------------------- 10226 29 August 2008. Summary of changes for version 20080829: 10227 10228 1) ACPI CA Core Subsystem: 10229 10230 Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type 10231 Reference. Changes include the elimination of cheating on the Object 10232 field 10233 for the DdbHandle subtype, addition of a reference class field to 10234 differentiate the various reference types (instead of an AML opcode), and 10235 the 10236 cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723 10237 10238 Reduce an error to a warning for an incorrect method argument count. 10239 Previously aborted with an error if too few arguments were passed to a 10240 control method via the external ACPICA interface. Now issue a warning 10241 instead 10242 and continue. Handles the case where the method inadvertently declares 10243 too 10244 many arguments, but does not actually use the extra ones. Applies mainly 10245 to 10246 the predefined methods. Lin Ming. Linux BZ 11032. 10247 10248 Disallow the evaluation of named object types with no intrinsic value. 10249 Return 10250 AE_TYPE for objects that have no value and therefore evaluation is 10251 undefined: 10252 Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation 10253 of 10254 these types were allowed, but an exception would be generated at some 10255 point 10256 during the evaluation. Now, the error is generated up front. 10257 10258 Fixed a possible memory leak in the AcpiNsGetExternalPathname function 10259 (nsnames.c). Fixes a leak in the error exit path. 10260 10261 Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These 10262 debug 10263 levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and 10264 ACPI_EXCEPTION 10265 interfaces. Also added ACPI_DB_EVENTS to correspond with the existing 10266 ACPI_LV_EVENTS. 10267 10268 Removed obsolete and/or unused exception codes from the acexcep.h header. 10269 There is the possibility that certain device drivers may be affected if 10270 they 10271 use any of these exceptions. 10272 10273 The ACPICA documentation has been added to the public git source tree, 10274 under 10275 acpica/documents. Included are the ACPICA programmer reference, the iASL 10276 compiler reference, and the changes.txt release logfile. 10277 10278 Example Code and Data Size: These are the sizes for the OS-independent 10279 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 10280 debug version of the code includes the debug output trace mechanism and 10281 has a 10282 much larger code and data size. 10283 10284 Previous Release: 10285 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 10286 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 10287 Current Release: 10288 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 10289 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 10290 10291 2) iASL Compiler/Disassembler and Tools: 10292 10293 Allow multiple argument counts for the predefined _SCP method. ACPI 3.0 10294 defines _SCP with 3 arguments. Previous versions defined it with only 1 10295 argument. iASL now allows both definitions. 10296 10297 iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for 10298 zero- 10299 length subtables when disassembling ACPI tables. Also fixed a couple of 10300 errors where a full 16-bit table type field was not extracted from the 10301 input 10302 properly. 10303 10304 acpisrc: Improve comment counting mechanism for generating source code 10305 statistics. Count first and last lines of multi-line comments as 10306 whitespace, 10307 not comment lines. Handle Linux legal header in addition to standard 10308 acpica 10309 header. 10310 10311 ---------------------------------------- 10312 10313 29 July 2008. Summary of changes for version 20080729: 10314 10315 1) ACPI CA Core Subsystem: 10316 10317 Fix a possible deadlock in the GPE dispatch. Remove call to 10318 AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will 10319 attempt 10320 to acquire the GPE lock but can deadlock since the GPE lock is already 10321 held 10322 at dispatch time. This code was introduced in version 20060831 as a 10323 response 10324 to Linux BZ 6881 and has since been removed from Linux. 10325 10326 Add a function to dereference returned reference objects. Examines the 10327 return 10328 object from a call to AcpiEvaluateObject. Any Index or RefOf references 10329 are 10330 automatically dereferenced in an attempt to return something useful 10331 (these 10332 reference types cannot be converted into an external ACPI_OBJECT.) 10333 Provides 10334 MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105 10335 10336 x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new 10337 subtables for the MADT and one new subtable for the SRAT. Includes 10338 disassembler and AcpiSrc support. Data from the Intel 64 Architecture 10339 x2APIC 10340 Specification, June 2008. 10341 10342 Additional error checking for pathname utilities. Add error check after 10343 all 10344 calls to AcpiNsGetPathnameLength. Add status return from 10345 AcpiNsBuildExternalPath and check after all calls. Add parameter 10346 validation 10347 to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar. 10348 10349 Return status from the global init function AcpiUtGlobalInitialize. This 10350 is 10351 used by both the kernel subsystem and the utilities such as iASL 10352 compiler. 10353 The function could possibly fail when the caches are initialized. Yang 10354 Yi. 10355 10356 Add a function to decode reference object types to strings. Created for 10357 improved error messages. 10358 10359 Improve object conversion error messages. Better error messages during 10360 object 10361 conversion from internal to the external ACPI_OBJECT. Used for external 10362 calls 10363 to AcpiEvaluateObject. 10364 10365 Example Code and Data Size: These are the sizes for the OS-independent 10366 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 10367 debug version of the code includes the debug output trace mechanism and 10368 has a 10369 much larger code and data size. 10370 10371 Previous Release: 10372 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 10373 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 10374 Current Release: 10375 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 10376 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 10377 10378 2) iASL Compiler/Disassembler and Tools: 10379 10380 Debugger: fix a possible hang when evaluating non-methods. Fixes a 10381 problem 10382 introduced in version 20080701. If the object being evaluated (via 10383 execute 10384 command) is not a method, the debugger can hang while trying to obtain 10385 non- 10386 existent parameters. 10387 10388 iASL: relax error for using reserved "_T_x" identifiers. These names can 10389 appear in a disassembled ASL file if they were emitted by the original 10390 compiler. Instead of issuing an error or warning and forcing the user to 10391 manually change these names, issue a remark instead. 10392 10393 iASL: error if named object created in while loop. Emit an error if any 10394 named 10395 object is created within a While loop. If allowed, this code will 10396 generate 10397 a 10398 run-time error on the second iteration of the loop when an attempt is 10399 made 10400 to 10401 create the same named object twice. ACPICA bugzilla 730. 10402 10403 iASL: Support absolute pathnames for include files. Add support for 10404 absolute 10405 pathnames within the Include operator. previously, only relative 10406 pathnames 10407 were supported. 10408 10409 iASL: Enforce minimum 1 interrupt in interrupt macro and Resource 10410 Descriptor. 10411 The ACPI spec requires one interrupt minimum. BZ 423 10412 10413 iASL: Handle a missing ResourceSource arg, with a present SourceIndex. 10414 Handles the case for the Interrupt Resource Descriptor where 10415 the ResourceSource argument is omitted but ResourceSourceIndex 10416 is present. Now leave room for the Index. BZ 426 10417 10418 iASL: Prevent error message if CondRefOf target does not exist. Fixes 10419 cases 10420 where an error message is emitted if the target does not exist. BZ 516 10421 10422 iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option 10423 (get ACPI tables on Windows). This was apparently broken in version 10424 20070919. 10425 10426 AcpiXtract: Handle EOF while extracting data. Correctly handle the case 10427 where 10428 the EOF happens immediately after the last table in the input file. Print 10429 completion message. Previously, no message was displayed in this case. 10430 10431 ---------------------------------------- 10432 01 July 2008. Summary of changes for version 20080701: 10433 10434 0) Git source tree / acpica.org 10435 10436 Fixed a problem where a git-clone from http would not transfer the entire 10437 source tree. 10438 10439 1) ACPI CA Core Subsystem: 10440 10441 Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one 10442 enable bit. Now performs a read-change-write of the enable register 10443 instead 10444 of simply writing out the cached enable mask. This will prevent 10445 inadvertent 10446 enabling of GPEs if a rogue GPE is received during initialization (before 10447 GPE 10448 handlers are installed.) 10449 10450 Implemented a copy for dynamically loaded tables. Previously, dynamically 10451 loaded tables were simply mapped - but on some machines this memory is 10452 corrupted after suspend. Now copy the table to a local buffer. For the 10453 OpRegion case, added checksum verify. Use the table length from the table 10454 header, not the region length. For the Buffer case, use the table length 10455 also. Dennis Noordsij, Bob Moore. BZ 10734 10456 10457 Fixed a problem where the same ACPI table could not be dynamically loaded 10458 and 10459 unloaded more than once. Without this change, a table cannot be loaded 10460 again 10461 once it has been loaded/unloaded one time. The current mechanism does not 10462 unregister a table upon an unload. During a load, if the same table is 10463 found, 10464 this no longer returns an exception. BZ 722 10465 10466 Fixed a problem where the wrong descriptor length was calculated for the 10467 EndTag descriptor in 64-bit mode. The "minimal" descriptors such as 10468 EndTag 10469 are calculated as 12 bytes long, but the actual length in the internal 10470 descriptor is 16 because of the round-up to 8 on the 64-bit build. 10471 Reported 10472 by Linn Crosetto. BZ 728 10473 10474 Fixed a possible memory leak in the Unload operator. The DdbHandle 10475 returned 10476 by Load() did not have its reference count decremented during unload, 10477 leading 10478 to a memory leak. Lin Ming. BZ 727 10479 10480 Fixed a possible memory leak when deleting thermal/processor objects. Any 10481 associated notify handlers (and objects) were not being deleted. Fiodor 10482 Suietov. BZ 506 10483 10484 Fixed the ordering of the ASCII names in the global mutex table to match 10485 the 10486 actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug 10487 only. 10488 Vegard Nossum. BZ 726 10489 10490 Enhanced the AcpiGetObjectInfo interface to return the number of required 10491 arguments if the object is a control method. Added this call to the 10492 debugger 10493 so the proper number of default arguments are passed to a method. This 10494 prevents a warning when executing methods from AcpiExec. 10495 10496 Added a check for an invalid handle in AcpiGetObjectInfo. Return 10497 AE_BAD_PARAMETER if input handle is invalid. BZ 474 10498 10499 Fixed an extraneous warning from exconfig.c on the 64-bit build. 10500 10501 Example Code and Data Size: These are the sizes for the OS-independent 10502 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 10503 debug version of the code includes the debug output trace mechanism and 10504 has a 10505 much larger code and data size. 10506 10507 Previous Release: 10508 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 10509 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 10510 Current Release: 10511 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 10512 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 10513 10514 2) iASL Compiler/Disassembler and Tools: 10515 10516 iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both 10517 resource descriptor names. 10518 10519 iASL: Detect invalid ASCII characters in input (windows version). Removed 10520 the 10521 "-CF" flag from the flex compile, enables correct detection of non-ASCII 10522 characters in the input. BZ 441 10523 10524 iASL: Eliminate warning when result of LoadTable is not used. Eliminate 10525 the 10526 "result of operation not used" warning when the DDB handle returned from 10527 LoadTable is not used. The warning is not needed. BZ 590 10528 10529 AcpiExec: Add support for dynamic table load/unload. Now calls _CFG 10530 method 10531 to 10532 pass address of table to the AML. Added option to disable OpRegion 10533 simulation 10534 to allow creation of an OpRegion with a real address that was passed to 10535 _CFG. 10536 All of this allows testing of the Load and Unload operators from 10537 AcpiExec. 10538 10539 Debugger: update tables command for unloaded tables. Handle unloaded 10540 tables 10541 and use the standard table header output routine. 10542 10543 ---------------------------------------- 10544 09 June 2008. Summary of changes for version 20080609: 10545 10546 1) ACPI CA Core Subsystem: 10547 10548 Implemented a workaround for reversed _PRT entries. A significant number 10549 of 10550 BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This 10551 change dynamically detects and repairs this problem. Provides 10552 compatibility 10553 with MS ACPI. BZ 6859 10554 10555 Simplified the internal ACPI hardware interfaces to eliminate the locking 10556 flag parameter from Register Read/Write. Added a new external interface, 10557 AcpiGetRegisterUnlocked. 10558 10559 Fixed a problem where the invocation of a GPE control method could hang. 10560 This 10561 was a regression introduced in 20080514. The new method argument count 10562 validation mechanism can enter an infinite loop when a GPE method is 10563 dispatched. Problem fixed by removing the obsolete code that passed GPE 10564 block 10565 information to the notify handler via the control method parameter 10566 pointer. 10567 10568 Fixed a problem where the _SST execution status was incorrectly returned 10569 to 10570 the caller of AcpiEnterSleepStatePrep. This was a regression introduced 10571 in 10572 20080514. _SST is optional and a NOT_FOUND exception should never be 10573 returned. BZ 716 10574 10575 Fixed a problem where a deleted object could be accessed from within the 10576 AML 10577 parser. This was a regression introduced in version 20080123 as a fix for 10578 the 10579 Unload operator. Lin Ming. BZ 10669 10580 10581 Cleaned up the debug operand dump mechanism. Eliminated unnecessary 10582 operands 10583 and eliminated the use of a negative index in a loop. Operands are now 10584 displayed in the correct order, not backwards. This also fixes a 10585 regression 10586 introduced in 20080514 on 64-bit systems where the elimination of 10587 ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ 10588 715 10589 10590 Fixed a possible memory leak in EvPciConfigRegionSetup where the error 10591 exit 10592 path did not delete a locally allocated structure. 10593 10594 Updated definitions for the DMAR and SRAT tables to synchronize with the 10595 current specifications. Includes disassembler support. 10596 10597 Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect 10598 loop termination value was used. Loop terminated on iteration early, 10599 missing 10600 one mutex. Linn Crosetto 10601 10602 Example Code and Data Size: These are the sizes for the OS-independent 10603 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 10604 debug version of the code includes the debug output trace mechanism and 10605 has a 10606 much larger code and data size. 10607 10608 Previous Release: 10609 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 10610 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 10611 Current Release: 10612 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 10613 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 10614 10615 2) iASL Compiler/Disassembler and Tools: 10616 10617 Disassembler: Implemented support for EisaId() within _CID objects. Now 10618 disassemble integer _CID objects back to EisaId invocations, including 10619 multiple integers within _CID packages. Includes single-step support for 10620 debugger also. 10621 10622 Disassembler: Added support for DMAR and SRAT table definition changes. 10623 10624 ---------------------------------------- 10625 14 May 2008. Summary of changes for version 20080514: 10626 10627 1) ACPI CA Core Subsystem: 10628 10629 Fixed a problem where GPEs were enabled too early during the ACPICA 10630 initialization. This could lead to "handler not installed" errors on some 10631 machines. Moved GPE enable until after _REG/_STA/_INI methods are run. 10632 This 10633 ensures that all operation regions and devices throughout the namespace 10634 have 10635 been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916. 10636 10637 Implemented a change to the enter sleep code. Moved execution of the _GTS 10638 method to just before setting sleep enable bit. The execution was moved 10639 from 10640 AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed 10641 immediately before the SLP_EN bit is set, as per the ACPI specification. 10642 Luming Yu, BZ 1653. 10643 10644 Implemented a fix to disable unknown GPEs (2nd version). Now always 10645 disable 10646 the GPE, even if ACPICA thinks that that it is already disabled. It is 10647 possible that the AML or some other code has enabled the GPE unbeknownst 10648 to 10649 the ACPICA code. 10650 10651 Fixed a problem with the Field operator where zero-length fields would 10652 return 10653 an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length 10654 ASL 10655 field declarations in Field(), BankField(), and IndexField(). BZ 10606. 10656 10657 Implemented a fix for the Load operator, now load the table at the 10658 namespace 10659 root. This reverts a change introduced in version 20071019. The table is 10660 now 10661 loaded at the namespace root even though this goes against the ACPI 10662 specification. This provides compatibility with other ACPI 10663 implementations. 10664 The ACPI specification will be updated to reflect this in ACPI 4.0. Lin 10665 Ming. 10666 10667 Fixed a problem where ACPICA would not Load() tables with unusual 10668 signatures. 10669 Now ignore ACPI table signature for Load() operator. Only "SSDT" is 10670 acceptable to the ACPI spec, but tables are seen with OEMx and null sigs. 10671 Therefore, signature validation is worthless. Apparently MS ACPI accepts 10672 such 10673 signatures, ACPICA must be compatible. BZ 10454. 10674 10675 Fixed a possible negative array index in AcpiUtValidateException. Added 10676 NULL 10677 fields to the exception string arrays to eliminate a -1 subtraction on 10678 the 10679 SubStatus field. 10680 10681 Updated the debug tracking macros to reduce overall code and data size. 10682 Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings 10683 instead of pointers to static strings. Jan Beulich and Bob Moore. 10684 10685 Implemented argument count checking in control method invocation via 10686 AcpiEvaluateObject. Now emit an error if too few arguments, warning if 10687 too 10688 many. This applies only to extern programmatic control method execution, 10689 not 10690 method-to-method calls within the AML. Lin Ming. 10691 10692 Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is 10693 no 10694 longer needed, especially with the removal of 16-bit support. It was 10695 replaced 10696 mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64 10697 bit 10698 on 10699 32/64-bit platforms is required. 10700 10701 Added the C const qualifier for appropriate string constants -- mostly 10702 MODULE_NAME and printf format strings. Jan Beulich. 10703 10704 Example Code and Data Size: These are the sizes for the OS-independent 10705 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 10706 debug version of the code includes the debug output trace mechanism and 10707 has a 10708 much larger code and data size. 10709 10710 Previous Release: 10711 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 10712 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 10713 Current Release: 10714 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 10715 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 10716 10717 2) iASL Compiler/Disassembler and Tools: 10718 10719 Implemented ACPI table revision ID validation in the disassembler. Zero 10720 is 10721 always invalid. For DSDTs, the ID controls the interpreter integer width. 10722 1 10723 means 32-bit and this is unusual. 2 or greater is 64-bit. 10724 10725 ---------------------------------------- 10726 21 March 2008. Summary of changes for version 20080321: 10727 10728 1) ACPI CA Core Subsystem: 10729 10730 Implemented an additional change to the GPE support in order to suppress 10731 spurious or stray GPEs. The AcpiEvDisableGpe function will now 10732 permanently 10733 disable incoming GPEs that are neither enabled nor disabled -- meaning 10734 that 10735 the GPE is unknown to the system. This should prevent future interrupt 10736 floods 10737 from that GPE. BZ 6217 (Zhang Rui) 10738 10739 Fixed a problem where NULL package elements were not returned to the 10740 AcpiEvaluateObject interface correctly. The element was simply ignored 10741 instead of returning a NULL ACPI_OBJECT package element, potentially 10742 causing 10743 a buffer overflow and/or confusing the caller who expected a fixed number 10744 of 10745 elements. BZ 10132 (Lin Ming, Bob Moore) 10746 10747 Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word, 10748 Dword, 10749 Qword), Field, BankField, and IndexField operators when invoked from 10750 inside 10751 an executing control method. In this case, these operators created 10752 namespace 10753 nodes that were incorrectly left marked as permanent nodes instead of 10754 temporary nodes. This could cause a problem if there is race condition 10755 between an exiting control method and a running namespace walk. (Reported 10756 by 10757 Linn Crosetto) 10758 10759 Fixed a problem where the CreateField and CreateXXXField operators would 10760 incorrectly allow duplicate names (the name of the field) with no 10761 exception 10762 generated. 10763 10764 Implemented several changes for Notify handling. Added support for new 10765 Notify 10766 values (ACPI 2.0+) and improved the Notify debug output. Notify on 10767 PowerResource objects is no longer allowed, as per the ACPI 10768 specification. 10769 (Bob Moore, Zhang Rui) 10770 10771 All Reference Objects returned via the AcpiEvaluateObject interface are 10772 now 10773 marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved 10774 for 10775 NULL objects - either NULL package elements or unresolved named 10776 references. 10777 10778 Fixed a problem where an extraneous debug message was produced for 10779 package 10780 objects (when debugging enabled). The message "Package List length larger 10781 than NumElements count" is now produced in the correct case, and is now 10782 an 10783 error message rather than a debug message. Added a debug message for the 10784 opposite case, where NumElements is larger than the Package List (the 10785 package 10786 will be padded out with NULL elements as per the ACPI spec.) 10787 10788 Implemented several improvements for the output of the ASL "Debug" object 10789 to 10790 clarify and keep all data for a given object on one output line. 10791 10792 Fixed two size calculation issues with the variable-length Start 10793 Dependent 10794 resource descriptor. 10795 10796 Example Code and Data Size: These are the sizes for the OS-independent 10797 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 10798 debug version of the code includes the debug output trace mechanism and 10799 has 10800 a much larger code and data size. 10801 10802 Previous Release: 10803 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 10804 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 10805 Current Release: 10806 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 10807 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 10808 10809 2) iASL Compiler/Disassembler and Tools: 10810 10811 Fixed a problem with the use of the Switch operator where execution of 10812 the 10813 containing method by multiple concurrent threads could cause an 10814 AE_ALREADY_EXISTS exception. This is caused by the fact that there is no 10815 actual Switch opcode, it must be simulated with local named temporary 10816 variables and if/else pairs. The solution chosen was to mark any method 10817 that 10818 uses Switch as Serialized, thus preventing multiple thread entries. BZ 10819 469. 10820 10821 ---------------------------------------- 10822 13 February 2008. Summary of changes for version 20080213: 10823 10824 1) ACPI CA Core Subsystem: 10825 10826 Implemented another MS compatibility design change for GPE/Notify 10827 handling. 10828 GPEs are now cleared/enabled asynchronously to allow all pending notifies 10829 to 10830 complete first. It is expected that the OSL will queue the enable request 10831 behind all pending notify requests (may require changes to the local host 10832 OSL 10833 in AcpiOsExecute). Alexey Starikovskiy. 10834 10835 Fixed a problem where buffer and package objects passed as arguments to a 10836 control method via the external AcpiEvaluateObject interface could cause 10837 an 10838 AE_AML_INTERNAL exception depending on the order and type of operators 10839 executed by the target control method. 10840 10841 Fixed a problem where resource descriptor size optimization could cause a 10842 problem when a _CRS resource template is passed to a _SRS method. The 10843 _SRS 10844 resource template must use the same descriptors (with the same size) as 10845 returned from _CRS. This change affects the following resource 10846 descriptors: 10847 IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ 10848 9487) 10849 10850 Fixed a problem where a CopyObject to RegionField, BankField, and 10851 IndexField 10852 objects did not perform an implicit conversion as it should. These types 10853 must 10854 retain their initial type permanently as per the ACPI specification. 10855 However, 10856 a CopyObject to all other object types should not perform an implicit 10857 conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388 10858 10859 Fixed a problem with the AcpiGetDevices interface where the mechanism to 10860 match device CIDs did not examine the entire list of available CIDs, but 10861 instead aborted on the first non-matching CID. Andrew Patterson. 10862 10863 Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro 10864 was 10865 inadvertently changed to return a 16-bit value instead of a 32-bit value, 10866 truncating the upper dword of a 64-bit value. This macro is only used to 10867 display debug output, so no incorrect calculations were made. Also, 10868 reimplemented the macro so that a 64-bit shift is not performed by 10869 inefficient compilers. 10870 10871 Added missing va_end statements that should correspond with each va_start 10872 statement. 10873 10874 Example Code and Data Size: These are the sizes for the OS-independent 10875 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 10876 debug version of the code includes the debug output trace mechanism and 10877 has 10878 a much larger code and data size. 10879 10880 Previous Release: 10881 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 10882 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 10883 Current Release: 10884 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 10885 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 10886 10887 2) iASL Compiler/Disassembler and Tools: 10888 10889 Implemented full disassembler support for the following new ACPI tables: 10890 BERT, EINJ, and ERST. Implemented partial disassembler support for the 10891 complicated HEST table. These tables support the Windows Hardware Error 10892 Architecture (WHEA). 10893 10894 ---------------------------------------- 10895 23 January 2008. Summary of changes for version 20080123: 10896 10897 1) ACPI CA Core Subsystem: 10898 10899 Added the 2008 copyright to all module headers and signons. This affects 10900 virtually every file in the ACPICA core subsystem, the iASL compiler, and 10901 the tools/utilities. 10902 10903 Fixed a problem with the SizeOf operator when used with Package and 10904 Buffer 10905 objects. These objects have deferred execution for some arguments, and 10906 the 10907 execution is now completed before the SizeOf is executed. This problem 10908 caused 10909 unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore) 10910 BZ 10911 9558 10912 10913 Implemented an enhancement to the interpreter "slack mode". In the 10914 absence 10915 of 10916 an explicit return or an implicitly returned object from the last 10917 executed 10918 opcode, a control method will now implicitly return an integer of value 0 10919 for 10920 Microsoft compatibility. (Lin Ming) BZ 392 10921 10922 Fixed a problem with the Load operator where an exception was not 10923 returned 10924 in 10925 the case where the table is already loaded. (Lin Ming) BZ 463 10926 10927 Implemented support for the use of DDBHandles as an Indexed Reference, as 10928 per 10929 the ACPI spec. (Lin Ming) BZ 486 10930 10931 Implemented support for UserTerm (Method invocation) for the Unload 10932 operator 10933 as per the ACPI spec. (Lin Ming) BZ 580 10934 10935 Fixed a problem with the LoadTable operator where the OemId and 10936 OemTableId 10937 input strings could cause unexpected failures if they were shorter than 10938 the 10939 maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576 10940 10941 Implemented support for UserTerm (Method invocation) for the Unload 10942 operator 10943 as per the ACPI spec. (Lin Ming) BZ 580 10944 10945 Implemented header file support for new ACPI tables - BERT, ERST, EINJ, 10946 HEST, 10947 IBFT, UEFI, WDAT. Disassembler support is forthcoming. 10948 10949 Example Code and Data Size: These are the sizes for the OS-independent 10950 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 10951 debug version of the code includes the debug output trace mechanism and 10952 has 10953 a much larger code and data size. 10954 10955 Previous Release: 10956 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 10957 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 10958 Current Release: 10959 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 10960 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 10961 10962 2) iASL Compiler/Disassembler and Tools: 10963 10964 Implemented support in the disassembler for checksum validation on 10965 incoming 10966 binary DSDTs and SSDTs. If incorrect, a message is displayed within the 10967 table 10968 header dump at the start of the disassembly. 10969 10970 Implemented additional debugging information in the namespace listing 10971 file 10972 created during compilation. In addition to the namespace hierarchy, the 10973 full 10974 pathname to each namespace object is displayed. 10975 10976 Fixed a problem with the disassembler where invalid ACPI tables could 10977 cause 10978 faults or infinite loops. 10979 10980 Fixed an unexpected parse error when using the optional "parameter types" 10981 list in a control method declaration. (Lin Ming) BZ 397 10982 10983 Fixed a problem where two External declarations with the same name did 10984 not 10985 cause an error (Lin Ming) BZ 509 10986 10987 Implemented support for full TermArgs (adding Argx, Localx and method 10988 invocation) for the ParameterData parameter to the LoadTable operator. 10989 (Lin 10990 Ming) BZ 583,587 10991 10992 ---------------------------------------- 10993 19 December 2007. Summary of changes for version 20071219: 10994 10995 1) ACPI CA Core Subsystem: 10996 10997 Implemented full support for deferred execution for the TermArg string 10998 arguments for DataTableRegion. This enables forward references and full 10999 operand resolution for the three string arguments. Similar to 11000 OperationRegion 11001 deferred argument execution.) Lin Ming. BZ 430 11002 11003 Implemented full argument resolution support for the BankValue argument 11004 to 11005 BankField. Previously, only constants were supported, now any TermArg may 11006 be 11007 used. Lin Ming BZ 387, 393 11008 11009 Fixed a problem with AcpiGetDevices where the search of a branch of the 11010 device tree could be terminated prematurely. In accordance with the ACPI 11011 specification, the search down the current branch is terminated if a 11012 device 11013 is both not present and not functional (instead of just not present.) 11014 Yakui 11015 Zhao. 11016 11017 Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly 11018 if 11019 the underlying AML code changed the GPE enable registers. Now, any 11020 unknown 11021 incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately 11022 disabled 11023 instead of simply ignored. Rui Zhang. 11024 11025 Fixed a problem with Index Fields where the Index register was 11026 incorrectly 11027 limited to a maximum of 32 bits. Now any size may be used. 11028 11029 Fixed a couple memory leaks associated with "implicit return" objects 11030 when 11031 the AML Interpreter slack mode is enabled. Lin Ming BZ 349 11032 11033 Example Code and Data Size: These are the sizes for the OS-independent 11034 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 11035 debug version of the code includes the debug output trace mechanism and 11036 has 11037 a much larger code and data size. 11038 11039 Previous Release: 11040 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 11041 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 11042 Current Release: 11043 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 11044 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 11045 11046 ---------------------------------------- 11047 14 November 2007. Summary of changes for version 20071114: 11048 11049 1) ACPI CA Core Subsystem: 11050 11051 Implemented event counters for each of the Fixed Events, the ACPI SCI 11052 (interrupt) itself, and control methods executed. Named 11053 AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively. 11054 These 11055 should be useful for debugging and statistics. 11056 11057 Implemented a new external interface, AcpiGetStatistics, to retrieve the 11058 contents of the various event counters. Returns the current values for 11059 AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and 11060 AcpiMethodCount. The interface can be expanded in the future if new 11061 counters 11062 are added. Device drivers should use this interface rather than access 11063 the 11064 counters directly. 11065 11066 Fixed a problem with the FromBCD and ToBCD operators. With some 11067 compilers, 11068 the ShortDivide function worked incorrectly, causing problems with the 11069 BCD 11070 functions with large input values. A truncation from 64-bit to 32-bit 11071 inadvertently occurred. Internal BZ 435. Lin Ming 11072 11073 Fixed a problem with Index references passed as method arguments. 11074 References 11075 passed as arguments to control methods were dereferenced immediately 11076 (before 11077 control was passed to the called method). The references are now 11078 correctly 11079 passed directly to the called method. BZ 5389. Lin Ming 11080 11081 Fixed a problem with CopyObject used in conjunction with the Index 11082 operator. 11083 The reference was incorrectly dereferenced before the copy. The reference 11084 is 11085 now correctly copied. BZ 5391. Lin Ming 11086 11087 Fixed a problem with Control Method references within Package objects. 11088 These 11089 references are now correctly generated. This completes the package 11090 construction overhaul that began in version 20071019. 11091 11092 Example Code and Data Size: These are the sizes for the OS-independent 11093 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 11094 debug version of the code includes the debug output trace mechanism and 11095 has 11096 a much larger code and data size. 11097 11098 Previous Release: 11099 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 11100 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 11101 Current Release: 11102 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 11103 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 11104 11105 11106 2) iASL Compiler/Disassembler and Tools: 11107 11108 The AcpiExec utility now installs handlers for all of the predefined 11109 Operation Region types. New types supported are: PCI_Config, CMOS, and 11110 PCIBARTarget. 11111 11112 Fixed a problem with the 64-bit version of AcpiExec where the extended 11113 (64- 11114 bit) address fields for the DSDT and FACS within the FADT were not being 11115 used, causing truncation of the upper 32-bits of these addresses. Lin 11116 Ming 11117 and Bob Moore 11118 11119 ---------------------------------------- 11120 19 October 2007. Summary of changes for version 20071019: 11121 11122 1) ACPI CA Core Subsystem: 11123 11124 Fixed a problem with the Alias operator when the target of the alias is a 11125 named ASL operator that opens a new scope -- Scope, Device, 11126 PowerResource, 11127 Processor, and ThermalZone. In these cases, any children of the original 11128 operator could not be accessed via the alias, potentially causing 11129 unexpected 11130 AE_NOT_FOUND exceptions. (BZ 9067) 11131 11132 Fixed a problem with the Package operator where all named references were 11133 created as object references and left otherwise unresolved. According to 11134 the 11135 ACPI specification, a Package can only contain Data Objects or references 11136 to 11137 control methods. The implication is that named references to Data Objects 11138 (Integer, Buffer, String, Package, BufferField, Field) should be resolved 11139 immediately upon package creation. This is the approach taken with this 11140 change. References to all other named objects (Methods, Devices, Scopes, 11141 etc.) are all now properly created as reference objects. (BZ 5328) 11142 11143 Reverted a change to Notify handling that was introduced in version 11144 20070508. This version changed the Notify handling from asynchronous to 11145 fully synchronous (Device driver Notify handling with respect to the 11146 Notify 11147 ASL operator). It was found that this change caused more problems than it 11148 solved and was removed by most users. 11149 11150 Fixed a problem with the Increment and Decrement operators where the type 11151 of 11152 the target object could be unexpectedly and incorrectly changed. (BZ 353) 11153 Lin Ming. 11154 11155 Fixed a problem with the Load and LoadTable operators where the table 11156 location within the namespace was ignored. Instead, the table was always 11157 loaded into the root or current scope. Lin Ming. 11158 11159 Fixed a problem with the Load operator when loading a table from a buffer 11160 object. The input buffer was prematurely zeroed and/or deleted. (BZ 577) 11161 11162 Fixed a problem with the Debug object where a store of a DdbHandle 11163 reference 11164 object to the Debug object could cause a fault. 11165 11166 Added a table checksum verification for the Load operator, in the case 11167 where 11168 the load is from a buffer. (BZ 578). 11169 11170 Implemented additional parameter validation for the LoadTable operator. 11171 The 11172 length of the input strings SignatureString, OemIdString, and OemTableId 11173 are 11174 now checked for maximum lengths. (BZ 582) Lin Ming. 11175 11176 Example Code and Data Size: These are the sizes for the OS-independent 11177 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 11178 debug version of the code includes the debug output trace mechanism and 11179 has 11180 a much larger code and data size. 11181 11182 Previous Release: 11183 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 11184 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 11185 Current Release: 11186 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 11187 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 11188 11189 11190 2) iASL Compiler/Disassembler: 11191 11192 Fixed a problem where if a single file was specified and the file did not 11193 exist, no error message was emitted. (Introduced with wildcard support in 11194 version 20070917.) 11195 11196 ---------------------------------------- 11197 19 September 2007. Summary of changes for version 20070919: 11198 11199 1) ACPI CA Core Subsystem: 11200 11201 Designed and implemented new external interfaces to install and remove 11202 handlers for ACPI table-related events. Current events that are defined 11203 are 11204 LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as 11205 they are dynamically loaded and unloaded. See AcpiInstallTableHandler and 11206 AcpiRemoveTableHandler. (Lin Ming and Bob Moore) 11207 11208 Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag 11209 (acpi_serialized option on Linux) could cause some systems to hang during 11210 initialization. (Bob Moore) BZ 8171 11211 11212 Fixed a problem where objects of certain types (Device, ThermalZone, 11213 Processor, PowerResource) can be not found if they are declared and 11214 referenced from within the same control method (Lin Ming) BZ 341 11215 11216 Example Code and Data Size: These are the sizes for the OS-independent 11217 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 11218 debug version of the code includes the debug output trace mechanism and 11219 has 11220 a much larger code and data size. 11221 11222 Previous Release: 11223 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 11224 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 11225 Current Release: 11226 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 11227 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 11228 11229 11230 2) iASL Compiler/Disassembler: 11231 11232 Implemented support to allow multiple files to be compiled/disassembled 11233 in 11234 a 11235 single invocation. This includes command line wildcard support for both 11236 the 11237 Windows and Unix versions of the compiler. This feature simplifies the 11238 disassembly and compilation of multiple ACPI tables in a single 11239 directory. 11240 11241 ---------------------------------------- 11242 08 May 2007. Summary of changes for version 20070508: 11243 11244 1) ACPI CA Core Subsystem: 11245 11246 Implemented a Microsoft compatibility design change for the handling of 11247 the 11248 Notify AML operator. Previously, notify handlers were dispatched and 11249 executed completely asynchronously in a deferred thread. The new design 11250 still executes the notify handlers in a different thread, but the 11251 original 11252 thread that executed the Notify() now waits at a synchronization point 11253 for 11254 the notify handler to complete. Some machines depend on a synchronous 11255 Notify 11256 operator in order to operate correctly. 11257 11258 Implemented support to allow Package objects to be passed as method 11259 arguments to the external AcpiEvaluateObject interface. Previously, this 11260 would return the AE_NOT_IMPLEMENTED exception. This feature had not been 11261 implemented since there were no reserved control methods that required it 11262 until recently. 11263 11264 Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs 11265 that 11266 contained invalid non-zero values in reserved fields could cause later 11267 failures because these fields have meaning in later revisions of the 11268 FADT. 11269 For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The 11270 fields 11271 are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.) 11272 11273 Fixed a problem where the Global Lock handle was not properly updated if 11274 a 11275 thread that acquired the Global Lock via executing AML code then 11276 attempted 11277 to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by 11278 Joe 11279 Liu. 11280 11281 Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list 11282 could be corrupted if the interrupt being removed was at the head of the 11283 list. Reported by Linn Crosetto. 11284 11285 Example Code and Data Size: These are the sizes for the OS-independent 11286 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 11287 debug version of the code includes the debug output trace mechanism and 11288 has 11289 a much larger code and data size. 11290 11291 Previous Release: 11292 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 11293 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 11294 Current Release: 11295 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 11296 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 11297 11298 ---------------------------------------- 11299 20 March 2007. Summary of changes for version 20070320: 11300 11301 1) ACPI CA Core Subsystem: 11302 11303 Implemented a change to the order of interpretation and evaluation of AML 11304 operand objects within the AML interpreter. The interpreter now evaluates 11305 operands in the order that they appear in the AML stream (and the 11306 corresponding ASL code), instead of in the reverse order (after the 11307 entire 11308 operand list has been parsed). The previous behavior caused several 11309 subtle 11310 incompatibilities with the Microsoft AML interpreter as well as being 11311 somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov. 11312 11313 Implemented a change to the ACPI Global Lock support. All interfaces to 11314 the 11315 global lock now allow the same thread to acquire the lock multiple times. 11316 This affects the AcpiAcquireGlobalLock external interface to the global 11317 lock 11318 as well as the internal use of the global lock to support AML fields -- a 11319 control method that is holding the global lock can now simultaneously 11320 access 11321 AML fields that require global lock protection. Previously, in both 11322 cases, 11323 this would have resulted in an AE_ALREADY_ACQUIRED exception. The change 11324 to 11325 AcpiAcquireGlobalLock is of special interest to drivers for the Embedded 11326 Controller. There is no change to the behavior of the AML Acquire 11327 operator, 11328 as this can already be used to acquire a mutex multiple times by the same 11329 thread. BZ 8066. With assistance from Alexey Starikovskiy. 11330 11331 Fixed a problem where invalid objects could be referenced in the AML 11332 Interpreter after error conditions. During operand evaluation, ensure 11333 that 11334 the internal "Return Object" field is cleared on error and only valid 11335 pointers are stored there. Caused occasional access to deleted objects 11336 that 11337 resulted in "large reference count" warning messages. Valery Podrezov. 11338 11339 Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur 11340 on 11341 deeply nested control method invocations. BZ 7873, local BZ 487. Valery 11342 Podrezov. 11343 11344 Fixed an internal problem with the handling of result objects on the 11345 interpreter result stack. BZ 7872. Valery Podrezov. 11346 11347 Removed obsolete code that handled the case where AML_NAME_OP is the 11348 target 11349 of a reference (Reference.Opcode). This code was no longer necessary. BZ 11350 7874. Valery Podrezov. 11351 11352 Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This 11353 was 11354 a 11355 remnant from the previously discontinued 16-bit support. 11356 11357 Example Code and Data Size: These are the sizes for the OS-independent 11358 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 11359 debug version of the code includes the debug output trace mechanism and 11360 has 11361 a much larger code and data size. 11362 11363 Previous Release: 11364 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 11365 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 11366 Current Release: 11367 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 11368 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 11369 11370 ---------------------------------------- 11371 26 January 2007. Summary of changes for version 20070126: 11372 11373 1) ACPI CA Core Subsystem: 11374 11375 Added the 2007 copyright to all module headers and signons. This affects 11376 virtually every file in the ACPICA core subsystem, the iASL compiler, and 11377 the utilities. 11378 11379 Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable 11380 during a table load. A bad pointer was passed in the case where the DSDT 11381 is 11382 overridden, causing a fault in this case. 11383 11384 Example Code and Data Size: These are the sizes for the OS-independent 11385 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 11386 debug version of the code includes the debug output trace mechanism and 11387 has 11388 a much larger code and data size. 11389 11390 Previous Release: 11391 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 11392 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 11393 Current Release: 11394 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 11395 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 11396 11397 ---------------------------------------- 11398 15 December 2006. Summary of changes for version 20061215: 11399 11400 1) ACPI CA Core Subsystem: 11401 11402 Support for 16-bit ACPICA has been completely removed since it is no 11403 longer 11404 necessary and it clutters the code. All 16-bit macros, types, and 11405 conditional compiles have been removed, cleaning up and simplifying the 11406 code 11407 across the entire subsystem. DOS support is no longer needed since the 11408 bootable Linux firmware kit is now available. 11409 11410 The handler for the Global Lock is now removed during AcpiTerminate to 11411 enable a clean subsystem restart, via the implementation of the 11412 AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz, 11413 HP) 11414 11415 Implemented enhancements to the multithreading support within the 11416 debugger 11417 to enable improved multithreading debugging and evaluation of the 11418 subsystem. 11419 (Valery Podrezov) 11420 11421 Debugger: Enhanced the Statistics/Memory command to emit the total 11422 (maximum) 11423 memory used during the execution, as well as the maximum memory consumed 11424 by 11425 each of the various object types. (Valery Podrezov) 11426 11427 Example Code and Data Size: These are the sizes for the OS-independent 11428 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 11429 debug version of the code includes the debug output trace mechanism and 11430 has 11431 a much larger code and data size. 11432 11433 Previous Release: 11434 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 11435 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 11436 Current Release: 11437 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 11438 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 11439 11440 11441 2) iASL Compiler/Disassembler and Tools: 11442 11443 AcpiExec: Implemented a new option (-m) to display full memory use 11444 statistics upon subsystem/program termination. (Valery Podrezov) 11445 11446 ---------------------------------------- 11447 09 November 2006. Summary of changes for version 20061109: 11448 11449 1) ACPI CA Core Subsystem: 11450 11451 Optimized the Load ASL operator in the case where the source operand is 11452 an 11453 operation region. Simply map the operation region memory, instead of 11454 performing a bytewise read. (Region must be of type SystemMemory, see 11455 below.) 11456 11457 Fixed the Load ASL operator for the case where the source operand is a 11458 region field. A buffer object is also allowed as the source operand. BZ 11459 480 11460 11461 Fixed a problem where the Load ASL operator allowed the source operand to 11462 be 11463 an operation region of any type. It is now restricted to regions of type 11464 SystemMemory, as per the ACPI specification. BZ 481 11465 11466 Additional cleanup and optimizations for the new Table Manager code. 11467 11468 AcpiEnable will now fail if all of the required ACPI tables are not 11469 loaded 11470 (FADT, FACS, DSDT). BZ 477 11471 11472 Added #pragma pack(8/4) to acobject.h to ensure that the structures in 11473 this 11474 header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been 11475 manually optimized to be aligned and will not work if it is byte-packed. 11476 11477 Example Code and Data Size: These are the sizes for the OS-independent 11478 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 11479 debug version of the code includes the debug output trace mechanism and 11480 has 11481 a much larger code and data size. 11482 11483 Previous Release: 11484 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 11485 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 11486 Current Release: 11487 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 11488 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 11489 11490 11491 2) iASL Compiler/Disassembler and Tools: 11492 11493 Fixed a problem where the presence of the _OSI predefined control method 11494 within complex expressions could cause an internal compiler error. 11495 11496 AcpiExec: Implemented full region support for multiple address spaces. 11497 SpaceId is now part of the REGION object. BZ 429 11498 11499 ---------------------------------------- 11500 11 October 2006. Summary of changes for version 20061011: 11501 11502 1) ACPI CA Core Subsystem: 11503 11504 Completed an AML interpreter performance enhancement for control method 11505 execution. Previously a 2-pass parse/execution, control methods are now 11506 completely parsed and executed in a single pass. This improves overall 11507 interpreter performance by ~25%, reduces code size, and reduces CPU stack 11508 use. (Valery Podrezov + interpreter changes in version 20051202 that 11509 eliminated namespace loading during the pass one parse.) 11510 11511 Implemented _CID support for PCI Root Bridge detection. If the _HID does 11512 not 11513 match the predefined PCI Root Bridge IDs, the _CID list (if present) is 11514 now 11515 obtained and also checked for an ID match. 11516 11517 Implemented additional support for the PCI _ADR execution: upsearch until 11518 a 11519 device scope is found before executing _ADR. This allows PCI_Config 11520 operation regions to be declared locally within control methods 11521 underneath 11522 PCI device objects. 11523 11524 Fixed a problem with a possible race condition between threads executing 11525 AcpiWalkNamespace and the AML interpreter. This condition was removed by 11526 modifying AcpiWalkNamespace to (by default) ignore all temporary 11527 namespace 11528 entries created during any concurrent control method execution. An 11529 additional namespace race condition is known to exist between 11530 AcpiWalkNamespace and the Load/Unload ASL operators and is still under 11531 investigation. 11532 11533 Restructured the AML ParseLoop function, breaking it into several 11534 subfunctions in order to reduce CPU stack use and improve 11535 maintainability. 11536 (Mikhail Kouzmich) 11537 11538 AcpiGetHandle: Fix for parameter validation to detect invalid 11539 combinations 11540 of prefix handle and pathname. BZ 478 11541 11542 Example Code and Data Size: These are the sizes for the OS-independent 11543 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 11544 debug version of the code includes the debug output trace mechanism and 11545 has 11546 a much larger code and data size. 11547 11548 Previous Release: 11549 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 11550 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 11551 Current Release: 11552 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 11553 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 11554 11555 2) iASL Compiler/Disassembler and Tools: 11556 11557 Ported the -g option (get local ACPI tables) to the new ACPICA Table 11558 Manager 11559 to restore original behavior. 11560 11561 ---------------------------------------- 11562 27 September 2006. Summary of changes for version 20060927: 11563 11564 1) ACPI CA Core Subsystem: 11565 11566 Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister. 11567 These functions now use a spinlock for mutual exclusion and the interrupt 11568 level indication flag is not needed. 11569 11570 Fixed a problem with the Global Lock where the lock could appear to be 11571 obtained before it is actually obtained. The global lock semaphore was 11572 inadvertently created with one unit instead of zero units. (BZ 464) 11573 Fiodor 11574 Suietov. 11575 11576 Fixed a possible memory leak and fault in AcpiExResolveObjectToValue 11577 during 11578 a read from a buffer or region field. (BZ 458) Fiodor Suietov. 11579 11580 Example Code and Data Size: These are the sizes for the OS-independent 11581 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 11582 debug version of the code includes the debug output trace mechanism and 11583 has 11584 a much larger code and data size. 11585 11586 Previous Release: 11587 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 11588 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 11589 Current Release: 11590 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 11591 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 11592 11593 11594 2) iASL Compiler/Disassembler and Tools: 11595 11596 Fixed a compilation problem with the pre-defined Resource Descriptor 11597 field 11598 names where an "object does not exist" error could be incorrectly 11599 generated 11600 if the parent ResourceTemplate pathname places the template within a 11601 different namespace scope than the current scope. (BZ 7212) 11602 11603 Fixed a problem where the compiler could hang after syntax errors 11604 detected 11605 in an ElseIf construct. (BZ 453) 11606 11607 Fixed a problem with the AmlFilename parameter to the DefinitionBlock() 11608 operator. An incorrect output filename was produced when this parameter 11609 was 11610 a null string (""). Now, the original input filename is used as the AML 11611 output filename, with an ".aml" extension. 11612 11613 Implemented a generic batch command mode for the AcpiExec utility 11614 (execute 11615 any AML debugger command) (Valery Podrezov). 11616 11617 ---------------------------------------- 11618 12 September 2006. Summary of changes for version 20060912: 11619 11620 1) ACPI CA Core Subsystem: 11621 11622 Enhanced the implementation of the "serialized mode" of the interpreter 11623 (enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is 11624 specified, instead of creating a serialization semaphore per control 11625 method, 11626 the interpreter lock is simply no longer released before a blocking 11627 operation during control method execution. This effectively makes the AML 11628 Interpreter single-threaded. The overhead of a semaphore per-method is 11629 eliminated. 11630 11631 Fixed a regression where an error was no longer emitted if a control 11632 method 11633 attempts to create 2 objects of the same name. This once again returns 11634 AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism 11635 that 11636 will dynamically serialize the control method to possible prevent future 11637 errors. (BZ 440) 11638 11639 Integrated a fix for a problem with PCI Express HID detection in the PCI 11640 Config Space setup procedure. (BZ 7145) 11641 11642 Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the 11643 AcpiHwInitialize function - the FADT registers are now validated when the 11644 table is loaded. 11645 11646 Added two new warnings during FADT verification - 1) if the FADT is 11647 larger 11648 than the largest known FADT version, and 2) if there is a mismatch 11649 between 11650 a 11651 32-bit block address and the 64-bit X counterpart (when both are non- 11652 zero.) 11653 11654 Example Code and Data Size: These are the sizes for the OS-independent 11655 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 11656 debug version of the code includes the debug output trace mechanism and 11657 has 11658 a much larger code and data size. 11659 11660 Previous Release: 11661 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 11662 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 11663 Current Release: 11664 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 11665 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 11666 11667 11668 2) iASL Compiler/Disassembler and Tools: 11669 11670 Fixed a problem with the implementation of the Switch() operator where 11671 the 11672 temporary variable was declared too close to the actual Switch, instead 11673 of 11674 at method level. This could cause a problem if the Switch() operator is 11675 within a while loop, causing an error on the second iteration. (BZ 460) 11676 11677 Disassembler - fix for error emitted for unknown type for target of scope 11678 operator. Now, ignore it and continue. 11679 11680 Disassembly of an FADT now verifies the input FADT and reports any errors 11681 found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs. 11682 11683 Disassembly of raw data buffers with byte initialization data now 11684 prefixes 11685 each output line with the current buffer offset. 11686 11687 Disassembly of ASF! table now includes all variable-length data fields at 11688 the end of some of the subtables. 11689 11690 The disassembler now emits a comment if a buffer appears to be a 11691 ResourceTemplate, but cannot be disassembled as such because the EndTag 11692 does 11693 not appear at the very end of the buffer. 11694 11695 AcpiExec - Added the "-t" command line option to enable the serialized 11696 mode 11697 of the AML interpreter. 11698 11699 ---------------------------------------- 11700 31 August 2006. Summary of changes for version 20060831: 11701 11702 1) ACPI CA Core Subsystem: 11703 11704 Miscellaneous fixes for the Table Manager: 11705 - Correctly initialize internal common FADT for all 64-bit "X" fields 11706 - Fixed a couple table mapping issues during table load 11707 - Fixed a couple alignment issues for IA64 11708 - Initialize input array to zero in AcpiInitializeTables 11709 - Additional parameter validation for AcpiGetTable, AcpiGetTableHeader, 11710 AcpiGetTableByIndex 11711 11712 Change for GPE support: when a "wake" GPE is received, all wake GPEs are 11713 now 11714 immediately disabled to prevent the waking GPE from firing again and to 11715 prevent other wake GPEs from interrupting the wake process. 11716 11717 Added the AcpiGpeCount global that tracks the number of processed GPEs, 11718 to 11719 be used for debugging systems with a large number of ACPI interrupts. 11720 11721 Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in 11722 both the ACPICA headers and the disassembler. 11723 11724 Example Code and Data Size: These are the sizes for the OS-independent 11725 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 11726 debug version of the code includes the debug output trace mechanism and 11727 has 11728 a much larger code and data size. 11729 11730 Previous Release: 11731 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 11732 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 11733 Current Release: 11734 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 11735 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 11736 11737 11738 2) iASL Compiler/Disassembler and Tools: 11739 11740 Disassembler support for the DMAR ACPI table. 11741 11742 ---------------------------------------- 11743 23 August 2006. Summary of changes for version 20060823: 11744 11745 1) ACPI CA Core Subsystem: 11746 11747 The Table Manager component has been completely redesigned and 11748 reimplemented. The new design is much simpler, and reduces the overall 11749 code 11750 and data size of the kernel-resident ACPICA by approximately 5%. Also, it 11751 is 11752 now possible to obtain the ACPI tables very early during kernel 11753 initialization, even before dynamic memory management is initialized. 11754 (Alexey Starikovskiy, Fiodor Suietov, Bob Moore) 11755 11756 Obsolete ACPICA interfaces: 11757 11758 - AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel 11759 init 11760 time). 11761 - AcpiLoadTable: Not needed. 11762 - AcpiUnloadTable: Not needed. 11763 11764 New ACPICA interfaces: 11765 11766 - AcpiInitializeTables: Must be called before the table manager can be 11767 used. 11768 - AcpiReallocateRootTable: Used to transfer the root table to dynamically 11769 allocated memory after it becomes available. 11770 - AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI 11771 tables 11772 in the RSDT/XSDT. 11773 11774 Other ACPICA changes: 11775 11776 - AcpiGetTableHeader returns the actual mapped table header, not a copy. 11777 Use 11778 AcpiOsUnmapMemory to free this mapping. 11779 - AcpiGetTable returns the actual mapped table. The mapping is managed 11780 internally and must not be deleted by the caller. Use of this interface 11781 causes no additional dynamic memory allocation. 11782 - AcpiFindRootPointer: Support for physical addressing has been 11783 eliminated, 11784 it appeared to be unused. 11785 - The interface to AcpiOsMapMemory has changed to be consistent with the 11786 other allocation interfaces. 11787 - The interface to AcpiOsGetRootPointer has changed to eliminate 11788 unnecessary 11789 parameters. 11790 - ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on 11791 64- 11792 bit platforms. Was previously 64 bits on all platforms. 11793 - The interface to the ACPI Global Lock acquire/release macros have 11794 changed 11795 slightly since ACPICA no longer keeps a local copy of the FACS with a 11796 constructed pointer to the actual global lock. 11797 11798 Porting to the new table manager: 11799 11800 - AcpiInitializeTables: Must be called once, and can be called anytime 11801 during the OS initialization process. It allows the host to specify an 11802 area 11803 of memory to be used to store the internal version of the RSDT/XSDT (root 11804 table). This allows the host to access ACPI tables before memory 11805 management 11806 is initialized and running. 11807 - AcpiReallocateRootTable: Can be called after memory management is 11808 running 11809 to copy the root table to a dynamically allocated array, freeing up the 11810 scratch memory specified in the call to AcpiInitializeTables. 11811 - AcpiSubsystemInitialize: This existing interface is independent of the 11812 Table Manager, and does not have to be called before the Table Manager 11813 can 11814 be used, it only must be called before the rest of ACPICA can be used. 11815 - ACPI Tables: Some changes have been made to the names and structure of 11816 the 11817 actbl.h and actbl1.h header files and may require changes to existing 11818 code. 11819 For example, bitfields have been completely removed because of their lack 11820 of 11821 portability across C compilers. 11822 - Update interfaces to the Global Lock acquire/release macros if local 11823 versions are used. (see acwin.h) 11824 11825 Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c 11826 11827 New files: tbfind.c 11828 11829 Example Code and Data Size: These are the sizes for the OS-independent 11830 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 11831 debug version of the code includes the debug output trace mechanism and 11832 has 11833 a much larger code and data size. 11834 11835 Previous Release: 11836 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 11837 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 11838 Current Release: 11839 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 11840 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 11841 11842 11843 2) iASL Compiler/Disassembler and Tools: 11844 11845 No changes for this release. 11846 11847 ---------------------------------------- 11848 21 July 2006. Summary of changes for version 20060721: 11849 11850 1) ACPI CA Core Subsystem: 11851 11852 The full source code for the ASL test suite used to validate the iASL 11853 compiler and the ACPICA core subsystem is being released with the ACPICA 11854 source for the first time. The source is contained in a separate package 11855 and 11856 consists of over 1100 files that exercise all ASL/AML operators. The 11857 package 11858 should appear on the Intel/ACPI web site shortly. (Valery Podrezov, 11859 Fiodor 11860 Suietov) 11861 11862 Completed a new design and implementation for support of the ACPI Global 11863 Lock. On the OS side, the global lock is now treated as a standard AML 11864 mutex. Previously, multiple OS threads could "acquire" the global lock 11865 simultaneously. However, this could cause the BIOS to be starved out of 11866 the 11867 lock - especially in cases such as the Embedded Controller driver where 11868 there is a tight coupling between the OS and the BIOS. 11869 11870 Implemented an optimization for the ACPI Global Lock interrupt mechanism. 11871 The Global Lock interrupt handler no longer queues the execution of a 11872 separate thread to signal the global lock semaphore. Instead, the 11873 semaphore 11874 is signaled directly from the interrupt handler. 11875 11876 Implemented support within the AML interpreter for package objects that 11877 contain a larger AML length (package list length) than the package 11878 element 11879 count. In this case, the length of the package is truncated to match the 11880 package element count. Some BIOS code apparently modifies the package 11881 length 11882 on the fly, and this change supports this behavior. Provides 11883 compatibility 11884 with the MS AML interpreter. (With assistance from Fiodor Suietov) 11885 11886 Implemented a temporary fix for the BankValue parameter of a Bank Field 11887 to 11888 support all constant values, now including the Zero and One opcodes. 11889 Evaluation of this parameter must eventually be converted to a full 11890 TermArg 11891 evaluation. A not-implemented error is now returned (temporarily) for 11892 non- 11893 constant values for this parameter. 11894 11895 Fixed problem reports (Fiodor Suietov) integrated: 11896 - Fix for premature object deletion after CopyObject on Operation Region 11897 (BZ 11898 350) 11899 11900 Example Code and Data Size: These are the sizes for the OS-independent 11901 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 11902 debug version of the code includes the debug output trace mechanism and 11903 has 11904 a much larger code and data size. 11905 11906 Previous Release: 11907 Non-Debug Version: 80.7K Code, 18.0K Data, 98.7K Total 11908 Debug Version: 160.9K Code, 65.1K Data, 226.0K Total 11909 Current Release: 11910 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 11911 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 11912 11913 11914 2) iASL Compiler/Disassembler and Tools: 11915 11916 No changes for this release. 11917 11918 ---------------------------------------- 11919 07 July 2006. Summary of changes for version 20060707: 11920 11921 1) ACPI CA Core Subsystem: 11922 11923 Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers 11924 that do not allow the initialization of address pointers within packed 11925 structures - even though the hardware itself may support misaligned 11926 transfers. Some of the debug data structures are packed by default to 11927 minimize size. 11928 11929 Added an error message for the case where AcpiOsGetThreadId() returns 11930 zero. 11931 A non-zero value is required by the core ACPICA code to ensure the proper 11932 operation of AML mutexes and recursive control methods. 11933 11934 The DSDT is now the only ACPI table that determines whether the AML 11935 interpreter is in 32-bit or 64-bit mode. Not really a functional change, 11936 but 11937 the hooks for per-table 32/64 switching have been removed from the code. 11938 A 11939 clarification to the ACPI specification is forthcoming in ACPI 3.0B. 11940 11941 Fixed a possible leak of an OwnerID in the error path of 11942 AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID 11943 deletion to a single place in AcpiTbUninstallTable to correct possible 11944 leaks 11945 when using the AcpiTbDeleteTablesByType interface (with assistance from 11946 Lance Ortiz.) 11947 11948 Fixed a problem with Serialized control methods where the semaphore 11949 associated with the method could be over-signaled after multiple method 11950 invocations. 11951 11952 Fixed two issues with the locking of the internal namespace data 11953 structure. 11954 Both the Unload() operator and AcpiUnloadTable interface now lock the 11955 namespace during the namespace deletion associated with the table unload 11956 (with assistance from Linn Crosetto.) 11957 11958 Fixed problem reports (Valery Podrezov) integrated: 11959 - Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426) 11960 11961 Fixed problem reports (Fiodor Suietov) integrated: 11962 - Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369) 11963 - On Address Space handler deletion, needless deactivation call (BZ 374) 11964 - AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ 11965 375) 11966 - Possible memory leak, Notify sub-objects of Processor, Power, 11967 ThermalZone 11968 (BZ 376) 11969 - AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378) 11970 - Minimum Length of RSDT should be validated (BZ 379) 11971 - AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no 11972 Handler (BZ (380) 11973 - AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type 11974 loaded 11975 (BZ 381) 11976 11977 Example Code and Data Size: These are the sizes for the OS-independent 11978 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 11979 debug version of the code includes the debug output trace mechanism and 11980 has 11981 a much larger code and data size. 11982 11983 Previous Release: 11984 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 11985 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 11986 Current Release: 11987 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 11988 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 11989 11990 11991 2) iASL Compiler/Disassembler and Tools: 11992 11993 Fixed problem reports: 11994 Compiler segfault when ASL contains a long (>1024) String declaration (BZ 11995 436) 11996 11997 ---------------------------------------- 11998 23 June 2006. Summary of changes for version 20060623: 11999 12000 1) ACPI CA Core Subsystem: 12001 12002 Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This 12003 allows the type to be customized to the host OS for improved efficiency 12004 (since a spinlock is usually a very small object.) 12005 12006 Implemented support for "ignored" bits in the ACPI registers. According 12007 to 12008 the ACPI specification, these bits should be preserved when writing the 12009 registers via a read/modify/write cycle. There are 3 bits preserved in 12010 this 12011 manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11]. 12012 12013 Implemented the initial deployment of new OSL mutex interfaces. Since 12014 some 12015 host operating systems have separate mutex and semaphore objects, this 12016 feature was requested. The base code now uses mutexes (and the new mutex 12017 interfaces) wherever a binary semaphore was used previously. However, for 12018 the current release, the mutex interfaces are defined as macros to map 12019 them 12020 to the existing semaphore interfaces. Therefore, no OSL changes are 12021 required 12022 at this time. (See acpiosxf.h) 12023 12024 Fixed several problems with the support for the control method SyncLevel 12025 parameter. The SyncLevel now works according to the ACPI specification 12026 and 12027 in concert with the Mutex SyncLevel parameter, since the current 12028 SyncLevel 12029 is a property of the executing thread. Mutual exclusion for control 12030 methods 12031 is now implemented with a mutex instead of a semaphore. 12032 12033 Fixed three instances of the use of the C shift operator in the bitfield 12034 support code (exfldio.c) to avoid the use of a shift value larger than 12035 the 12036 target data width. The behavior of C compilers is undefined in this case 12037 and 12038 can cause unpredictable results, and therefore the case must be detected 12039 and 12040 avoided. (Fiodor Suietov) 12041 12042 Added an info message whenever an SSDT or OEM table is loaded dynamically 12043 via the Load() or LoadTable() ASL operators. This should improve 12044 debugging 12045 capability since it will show exactly what tables have been loaded 12046 (beyond 12047 the tables present in the RSDT/XSDT.) 12048 12049 Example Code and Data Size: These are the sizes for the OS-independent 12050 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 12051 debug version of the code includes the debug output trace mechanism and 12052 has 12053 a much larger code and data size. 12054 12055 Previous Release: 12056 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 12057 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 12058 Current Release: 12059 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 12060 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 12061 12062 12063 2) iASL Compiler/Disassembler and Tools: 12064 12065 No changes for this release. 12066 12067 ---------------------------------------- 12068 08 June 2006. Summary of changes for version 20060608: 12069 12070 1) ACPI CA Core Subsystem: 12071 12072 Converted the locking mutex used for the ACPI hardware to a spinlock. 12073 This 12074 change should eliminate all problems caused by attempting to acquire a 12075 semaphore at interrupt level, and it means that all ACPICA external 12076 interfaces that directly access the ACPI hardware can be safely called 12077 from 12078 interrupt level. OSL code that implements the semaphore interfaces should 12079 be 12080 able to eliminate any workarounds for being called at interrupt level. 12081 12082 Fixed a regression introduced in 20060526 where the ACPI device 12083 initialization could be prematurely aborted with an AE_NOT_FOUND if a 12084 device 12085 did not have an optional _INI method. 12086 12087 Fixed an IndexField issue where a write to the Data Register should be 12088 limited in size to the AccessSize (width) of the IndexField itself. (BZ 12089 433, 12090 Fiodor Suietov) 12091 12092 Fixed problem reports (Valery Podrezov) integrated: 12093 - Allow store of ThermalZone objects to Debug object (BZ 5369/5370) 12094 12095 Fixed problem reports (Fiodor Suietov) integrated: 12096 - AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364) 12097 12098 Removed four global mutexes that were obsolete and were no longer being 12099 used. 12100 12101 Example Code and Data Size: These are the sizes for the OS-independent 12102 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 12103 debug version of the code includes the debug output trace mechanism and 12104 has 12105 a much larger code and data size. 12106 12107 Previous Release: 12108 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 12109 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 12110 Current Release: 12111 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 12112 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 12113 12114 12115 2) iASL Compiler/Disassembler and Tools: 12116 12117 Fixed a fault when using -g option (get tables from registry) on Windows 12118 machines. 12119 12120 Fixed problem reports integrated: 12121 - Generate error if CreateField NumBits parameter is zero. (BZ 405) 12122 - Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor 12123 Suietov) 12124 - Global table revision override (-r) is ignored (BZ 413) 12125 12126 ---------------------------------------- 12127 26 May 2006. Summary of changes for version 20060526: 12128 12129 1) ACPI CA Core Subsystem: 12130 12131 Restructured, flattened, and simplified the internal interfaces for 12132 namespace object evaluation - resulting in smaller code, less CPU stack 12133 use, 12134 and fewer interfaces. (With assistance from Mikhail Kouzmich) 12135 12136 Fixed a problem with the CopyObject operator where the first parameter 12137 was 12138 not typed correctly for the parser, interpreter, compiler, and 12139 disassembler. 12140 Caused various errors and unexpected behavior. 12141 12142 Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits 12143 produced incorrect results with some C compilers. Since the behavior of C 12144 compilers when the shift value is larger than the datatype width is 12145 apparently not well defined, the interpreter now detects this condition 12146 and 12147 simply returns zero as expected in all such cases. (BZ 395) 12148 12149 Fixed problem reports (Valery Podrezov) integrated: 12150 - Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329) 12151 - Allow interpreter to handle nested method declarations (BZ 5361) 12152 12153 Fixed problem reports (Fiodor Suietov) integrated: 12154 - AcpiTerminate doesn't free debug memory allocation list objects (BZ 12155 355) 12156 - After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ 12157 356) 12158 - AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357) 12159 - Resource Manager should return AE_TYPE for non-device objects (BZ 358) 12160 - Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359) 12161 - Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360) 12162 - Incomplete cleanup branch in AcpiPsParseAml (BZ 361) 12163 - Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362) 12164 - AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ 12165 365) 12166 - Status of the Global Initialization Handler call not used (BZ 366) 12167 - Incorrect object parameter to Global Initialization Handler (BZ 367) 12168 12169 Example Code and Data Size: These are the sizes for the OS-independent 12170 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 12171 debug version of the code includes the debug output trace mechanism and 12172 has 12173 a much larger code and data size. 12174 12175 Previous Release: 12176 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 12177 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 12178 Current Release: 12179 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 12180 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 12181 12182 12183 2) iASL Compiler/Disassembler and Tools: 12184 12185 Modified the parser to allow the names IO, DMA, and IRQ to be used as 12186 namespace identifiers with no collision with existing resource descriptor 12187 macro names. This provides compatibility with other ASL compilers and is 12188 most useful for disassembly/recompilation of existing tables without 12189 parse 12190 errors. (With assistance from Thomas Renninger) 12191 12192 Disassembler: fixed an incorrect disassembly problem with the 12193 DataTableRegion and CopyObject operators. Fixed a possible fault during 12194 disassembly of some Alias operators. 12195 12196 ---------------------------------------- 12197 12 May 2006. Summary of changes for version 20060512: 12198 12199 1) ACPI CA Core Subsystem: 12200 12201 Replaced the AcpiOsQueueForExecution interface with a new interface named 12202 AcpiOsExecute. The major difference is that the new interface does not 12203 have 12204 a Priority parameter, this appeared to be useless and has been replaced 12205 by 12206 a 12207 Type parameter. The Type tells the host what type of execution is being 12208 requested, such as global lock handler, notify handler, GPE handler, etc. 12209 This allows the host to queue and execute the request as appropriate for 12210 the 12211 request type, possibly using different work queues and different 12212 priorities 12213 for the various request types. This enables fixes for multithreading 12214 deadlock problems such as BZ #5534, and will require changes to all 12215 existing 12216 OS interface layers. (Alexey Starikovskiy and Bob Moore) 12217 12218 Fixed a possible memory leak associated with the support for the so- 12219 called 12220 "implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor 12221 Suietov) 12222 12223 Fixed a problem with the Load() operator where a table load from an 12224 operation region could overwrite an internal table buffer by up to 7 12225 bytes 12226 and cause alignment faults on IPF systems. (With assistance from Luming 12227 Yu) 12228 12229 Example Code and Data Size: These are the sizes for the OS-independent 12230 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 12231 debug version of the code includes the debug output trace mechanism and 12232 has 12233 a much larger code and data size. 12234 12235 Previous Release: 12236 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 12237 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 12238 Current Release: 12239 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 12240 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 12241 12242 12243 12244 2) iASL Compiler/Disassembler and Tools: 12245 12246 Disassembler: Implemented support to cross reference the internal 12247 namespace 12248 and automatically generate ASL External() statements for symbols not 12249 defined 12250 within the current table being disassembled. This will simplify the 12251 disassembly and recompilation of interdependent tables such as SSDTs 12252 since 12253 these statements will no longer have to be added manually. 12254 12255 Disassembler: Implemented experimental support to automatically detect 12256 invocations of external control methods and generate appropriate 12257 External() 12258 statements. This is problematic because the AML cannot be correctly 12259 parsed 12260 until the number of arguments for each control method is known. 12261 Currently, 12262 standalone method invocations and invocations as the source operand of a 12263 Store() statement are supported. 12264 12265 Disassembler: Implemented support for the ASL pseudo-operators LNotEqual, 12266 LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()), 12267 LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code 12268 more readable and likely closer to the original ASL source. 12269 12270 ---------------------------------------- 12271 21 April 2006. Summary of changes for version 20060421: 12272 12273 1) ACPI CA Core Subsystem: 12274 12275 Removed a device initialization optimization introduced in 20051216 where 12276 the _STA method was not run unless an _INI was also present for the same 12277 device. This optimization could cause problems because it could allow 12278 _INI 12279 methods to be run within a not-present device subtree. (If a not-present 12280 device had no _INI, _STA would not be run, the not-present status would 12281 not 12282 be discovered, and the children of the device would be incorrectly 12283 traversed.) 12284 12285 Implemented a new _STA optimization where namespace subtrees that do not 12286 contain _INI are identified and ignored during device initialization. 12287 Selectively running _STA can significantly improve boot time on large 12288 machines (with assistance from Len Brown.) 12289 12290 Implemented support for the device initialization case where the returned 12291 _STA flags indicate a device not-present but functioning. In this case, 12292 _INI 12293 is not run, but the device children are examined for presence, as per the 12294 ACPI specification. 12295 12296 Implemented an additional change to the IndexField support in order to 12297 conform to MS behavior. The value written to the Index Register is not 12298 simply a byte offset, it is a byte offset in units of the access width of 12299 the parent Index Field. (Fiodor Suietov) 12300 12301 Defined and deployed a new OSL interface, AcpiOsValidateAddress. This 12302 interface is called during the creation of all AML operation regions, and 12303 allows the host OS to exert control over what addresses it will allow the 12304 AML code to access. Operation Regions whose addresses are disallowed will 12305 cause a runtime exception when they are actually accessed (will not 12306 affect 12307 or abort table loading.) See oswinxf or osunixxf for an example 12308 implementation. 12309 12310 Defined and deployed a new OSL interface, AcpiOsValidateInterface. This 12311 interface allows the host OS to match the various "optional" 12312 interface/behavior strings for the _OSI predefined control method as 12313 appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf 12314 for an example implementation. 12315 12316 Restructured and corrected various problems in the exception handling 12317 code 12318 paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod 12319 (with assistance from Takayoshi Kochi.) 12320 12321 Modified the Linux source converter to ignore quoted string literals 12322 while 12323 converting identifiers from mixed to lower case. This will correct 12324 problems 12325 with the disassembler and other areas where such strings must not be 12326 modified. 12327 12328 The ACPI_FUNCTION_* macros no longer require quotes around the function 12329 name. This allows the Linux source converter to convert the names, now 12330 that 12331 the converter ignores quoted strings. 12332 12333 Example Code and Data Size: These are the sizes for the OS-independent 12334 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 12335 debug version of the code includes the debug output trace mechanism and 12336 has 12337 a much larger code and data size. 12338 12339 Previous Release: 12340 12341 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 12342 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 12343 Current Release: 12344 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 12345 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 12346 12347 12348 2) iASL Compiler/Disassembler and Tools: 12349 12350 Implemented 3 new warnings for iASL, and implemented multiple warning 12351 levels 12352 (w2 flag). 12353 12354 1) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is 12355 not 12356 WAIT_FOREVER (0xFFFF) and the code does not examine the return value to 12357 check for the possible timeout, a warning is issued. 12358 12359 2) Useless operators: If an ASL operator does not specify an optional 12360 target 12361 operand and it also does not use the function return value from the 12362 operator, a warning is issued since the operator effectively does 12363 nothing. 12364 12365 3) Unreferenced objects: If a namespace object is created, but never 12366 referenced, a warning is issued. This is a warning level 2 since there 12367 are 12368 cases where this is ok, such as when a secondary table is loaded that 12369 uses 12370 the unreferenced objects. Even so, care is taken to only flag objects 12371 that 12372 don't look like they will ever be used. For example, the reserved methods 12373 (starting with an underscore) are usually not referenced because it is 12374 expected that the OS will invoke them. 12375 12376 ---------------------------------------- 12377 31 March 2006. Summary of changes for version 20060331: 12378 12379 1) ACPI CA Core Subsystem: 12380 12381 Implemented header file support for the following additional ACPI tables: 12382 ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this 12383 support, 12384 all current and known ACPI tables are now defined in the ACPICA headers 12385 and 12386 are available for use by device drivers and other software. 12387 12388 Implemented support to allow tables that contain ACPI names with invalid 12389 characters to be loaded. Previously, this would cause the table load to 12390 fail, but since there are several known cases of such tables on existing 12391 machines, this change was made to enable ACPI support for them. Also, 12392 this 12393 matches the behavior of the Microsoft ACPI implementation. 12394 12395 Fixed a couple regressions introduced during the memory optimization in 12396 the 12397 20060317 release. The namespace node definition required additional 12398 reorganization and an internal datatype that had been changed to 8-bit 12399 was 12400 restored to 32-bit. (Valery Podrezov) 12401 12402 Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState 12403 could be passed through to AcpiOsReleaseObject which is unexpected. Such 12404 null pointers are now trapped and ignored, matching the behavior of the 12405 previous implementation before the deployment of AcpiOsReleaseObject. 12406 (Valery Podrezov, Fiodor Suietov) 12407 12408 Fixed a memory mapping leak during the deletion of a SystemMemory 12409 operation 12410 region where a cached memory mapping was not deleted. This became a 12411 noticeable problem for operation regions that are defined within 12412 frequently 12413 used control methods. (Dana Meyers) 12414 12415 Reorganized the ACPI table header files into two main files: one for the 12416 ACPI tables consumed by the ACPICA core, and another for the 12417 miscellaneous 12418 ACPI tables that are consumed by the drivers and other software. The 12419 various 12420 FADT definitions were merged into one common section and three different 12421 tables (ACPI 1.0, 1.0+, and 2.0) 12422 12423 Example Code and Data Size: These are the sizes for the OS-independent 12424 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 12425 debug version of the code includes the debug output trace mechanism and 12426 has 12427 a much larger code and data size. 12428 12429 Previous Release: 12430 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 12431 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 12432 Current Release: 12433 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 12434 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 12435 12436 12437 2) iASL Compiler/Disassembler and Tools: 12438 12439 Disassembler: Implemented support to decode and format all non-AML ACPI 12440 tables (tables other than DSDTs and SSDTs.) This includes the new tables 12441 added to the ACPICA headers, therefore all current and known ACPI tables 12442 are 12443 supported. 12444 12445 Disassembler: The change to allow ACPI names with invalid characters also 12446 enables the disassembly of such tables. Invalid characters within names 12447 are 12448 changed to '*' to make the name printable; the iASL compiler will still 12449 generate an error for such names, however, since this is an invalid ACPI 12450 character. 12451 12452 Implemented an option for AcpiXtract (-a) to extract all tables found in 12453 the 12454 input file. The default invocation extracts only the DSDTs and SSDTs. 12455 12456 Fixed a couple of gcc generation issues for iASL and AcpiExec and added a 12457 makefile for the AcpiXtract utility. 12458 12459 ---------------------------------------- 12460 17 March 2006. Summary of changes for version 20060317: 12461 12462 1) ACPI CA Core Subsystem: 12463 12464 Implemented the use of a cache object for all internal namespace nodes. 12465 Since there are about 1000 static nodes in a typical system, this will 12466 decrease memory use for cache implementations that minimize per- 12467 allocation 12468 overhead (such as a slab allocator.) 12469 12470 Removed the reference count mechanism for internal namespace nodes, since 12471 it 12472 was deemed unnecessary. This reduces the size of each namespace node by 12473 about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit 12474 case, 12475 and 32 bytes for the 64-bit case. 12476 12477 Optimized several internal data structures to reduce object size on 64- 12478 bit 12479 platforms by packing data within the 64-bit alignment. This includes the 12480 frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static 12481 instances corresponding to the namespace objects. 12482 12483 Added two new strings for the predefined _OSI method: "Windows 2001.1 12484 SP1" 12485 and "Windows 2006". 12486 12487 Split the allocation tracking mechanism out to a separate file, from 12488 utalloc.c to uttrack.c. This mechanism appears to be only useful for 12489 application-level code. Kernels may wish to not include uttrack.c in 12490 distributions. 12491 12492 Removed all remnants of the obsolete ACPI_REPORT_* macros and the 12493 associated 12494 code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING 12495 macros.) 12496 12497 Code and Data Size: These are the sizes for the acpica.lib produced by 12498 the 12499 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any 12500 ACPI 12501 driver or OSPM code. The debug version of the code includes the debug 12502 output 12503 trace mechanism and has a much larger code and data size. Note that these 12504 values will vary depending on the efficiency of the compiler and the 12505 compiler options used during generation. 12506 12507 Previous Release: 12508 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 12509 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 12510 Current Release: 12511 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 12512 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 12513 12514 12515 2) iASL Compiler/Disassembler and Tools: 12516 12517 Implemented an ANSI C version of the acpixtract utility. This version 12518 will 12519 automatically extract the DSDT and all SSDTs from the input acpidump text 12520 file and dump the binary output to separate files. It can also display a 12521 summary of the input file including the headers for each table found and 12522 will extract any single ACPI table, with any signature. (See 12523 source/tools/acpixtract) 12524 12525 ---------------------------------------- 12526 10 March 2006. Summary of changes for version 20060310: 12527 12528 1) ACPI CA Core Subsystem: 12529 12530 Tagged all external interfaces to the subsystem with the new 12531 ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to 12532 assist 12533 kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL 12534 macro. The default definition is NULL. 12535 12536 Added the ACPI_THREAD_ID type for the return value from 12537 AcpiOsGetThreadId. 12538 This allows the host to define this as necessary to simplify kernel 12539 integration. The default definition is ACPI_NATIVE_UINT. 12540 12541 Fixed two interpreter problems related to error processing, the deletion 12542 of 12543 objects, and placing invalid pointers onto the internal operator result 12544 stack. BZ 6028, 6151 (Valery Podrezov) 12545 12546 Increased the reference count threshold where a warning is emitted for 12547 large 12548 reference counts in order to eliminate unnecessary warnings on systems 12549 with 12550 large namespaces (especially 64-bit.) Increased the value from 0x400 to 12551 0x800. 12552 12553 Due to universal disagreement as to the meaning of the 'c' in the 12554 calloc() 12555 function, the ACPI_MEM_CALLOCATE macro has been renamed to 12556 ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'. 12557 ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and 12558 ACPI_FREE. 12559 12560 Code and Data Size: These are the sizes for the acpica.lib produced by 12561 the 12562 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any 12563 ACPI 12564 driver or OSPM code. The debug version of the code includes the debug 12565 output 12566 trace mechanism and has a much larger code and data size. Note that these 12567 values will vary depending on the efficiency of the compiler and the 12568 compiler options used during generation. 12569 12570 Previous Release: 12571 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 12572 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 12573 Current Release: 12574 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 12575 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 12576 12577 12578 2) iASL Compiler/Disassembler: 12579 12580 Disassembler: implemented support for symbolic resource descriptor 12581 references. If a CreateXxxxField operator references a fixed offset 12582 within 12583 a 12584 resource descriptor, a name is assigned to the descriptor and the offset 12585 is 12586 translated to the appropriate resource tag and pathname. The addition of 12587 this support brings the disassembled code very close to the original ASL 12588 source code and helps eliminate run-time errors when the disassembled 12589 code 12590 is modified (and recompiled) in such a way as to invalidate the original 12591 fixed offsets. 12592 12593 Implemented support for a Descriptor Name as the last parameter to the 12594 ASL 12595 Register() macro. This parameter was inadvertently left out of the ACPI 12596 specification, and will be added for ACPI 3.0b. 12597 12598 Fixed a problem where the use of the "_OSI" string (versus the full path 12599 "\_OSI") caused an internal compiler error. ("No back ptr to op") 12600 12601 Fixed a problem with the error message that occurs when an invalid string 12602 is 12603 used for a _HID object (such as one with an embedded asterisk: 12604 "*PNP010A".) 12605 The correct message is now displayed. 12606 12607 ---------------------------------------- 12608 17 February 2006. Summary of changes for version 20060217: 12609 12610 1) ACPI CA Core Subsystem: 12611 12612 Implemented a change to the IndexField support to match the behavior of 12613 the 12614 Microsoft AML interpreter. The value written to the Index register is now 12615 a 12616 byte offset, no longer an index based upon the width of the Data 12617 register. 12618 This should fix IndexField problems seen on some machines where the Data 12619 register is not exactly one byte wide. The ACPI specification will be 12620 clarified on this point. 12621 12622 Fixed a problem where several resource descriptor types could overrun the 12623 internal descriptor buffer due to size miscalculation: VendorShort, 12624 VendorLong, and Interrupt. This was noticed on IA64 machines, but could 12625 affect all platforms. 12626 12627 Fixed a problem where individual resource descriptors were misaligned 12628 within 12629 the internal buffer, causing alignment faults on IA64 platforms. 12630 12631 Code and Data Size: These are the sizes for the acpica.lib produced by 12632 the 12633 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any 12634 ACPI 12635 driver or OSPM code. The debug version of the code includes the debug 12636 output 12637 trace mechanism and has a much larger code and data size. Note that these 12638 values will vary depending on the efficiency of the compiler and the 12639 compiler options used during generation. 12640 12641 Previous Release: 12642 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 12643 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 12644 Current Release: 12645 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 12646 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 12647 12648 12649 2) iASL Compiler/Disassembler: 12650 12651 Implemented support for new reserved names: _WDG and _WED are Microsoft 12652 extensions for Windows Instrumentation Management, _TDL is a new ACPI- 12653 defined method (Throttling Depth Limit.) 12654 12655 Fixed a problem where a zero-length VendorShort or VendorLong resource 12656 descriptor was incorrectly emitted as a descriptor of length one. 12657 12658 ---------------------------------------- 12659 10 February 2006. Summary of changes for version 20060210: 12660 12661 1) ACPI CA Core Subsystem: 12662 12663 Removed a couple of extraneous ACPI_ERROR messages that appeared during 12664 normal execution. These became apparent after the conversion from 12665 ACPI_DEBUG_PRINT. 12666 12667 Fixed a problem where the CreateField operator could hang if the BitIndex 12668 or 12669 NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359) 12670 12671 Fixed a problem where a DeRefOf operation on a buffer object incorrectly 12672 failed with an exception. This also fixes a couple of related RefOf and 12673 DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387) 12674 12675 Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead 12676 of 12677 AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov, 12678 BZ 12679 5480) 12680 12681 Implemented a memory cleanup at the end of the execution of each 12682 iteration 12683 of an AML While() loop, preventing the accumulation of outstanding 12684 objects. 12685 (Valery Podrezov, BZ 5427) 12686 12687 Eliminated a chunk of duplicate code in the object resolution code. 12688 (Valery 12689 Podrezov, BZ 5336) 12690 12691 Fixed several warnings during the 64-bit code generation. 12692 12693 The AcpiSrc source code conversion tool now inserts one line of 12694 whitespace 12695 after an if() statement that is followed immediately by a comment, 12696 improving 12697 readability of the Linux code. 12698 12699 Code and Data Size: The current and previous library sizes for the core 12700 subsystem are shown below. These are the code and data sizes for the 12701 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 12702 These 12703 values do not include any ACPI driver or OSPM code. The debug version of 12704 the 12705 code includes the debug output trace mechanism and has a much larger code 12706 and data size. Note that these values will vary depending on the 12707 efficiency 12708 of the compiler and the compiler options used during generation. 12709 12710 Previous Release: 12711 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 12712 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 12713 Current Release: 12714 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 12715 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 12716 12717 12718 2) iASL Compiler/Disassembler: 12719 12720 Fixed a problem with the disassembly of a BankField operator with a 12721 complex 12722 expression for the BankValue parameter. 12723 12724 ---------------------------------------- 12725 27 January 2006. Summary of changes for version 20060127: 12726 12727 1) ACPI CA Core Subsystem: 12728 12729 Implemented support in the Resource Manager to allow unresolved 12730 namestring 12731 references within resource package objects for the _PRT method. This 12732 support 12733 is in addition to the previously implemented unresolved reference support 12734 within the AML parser. If the interpreter slack mode is enabled, these 12735 unresolved references will be passed through to the caller as a NULL 12736 package 12737 entry. 12738 12739 Implemented and deployed new macros and functions for error and warning 12740 messages across the subsystem. These macros are simpler and generate less 12741 code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION, 12742 ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older 12743 macros remain defined to allow ACPI drivers time to migrate to the new 12744 macros. 12745 12746 Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of 12747 the 12748 Acquire/Release Lock OSL interfaces. 12749 12750 Fixed a problem where Alias ASL operators are sometimes not correctly 12751 resolved, in both the interpreter and the iASL compiler. 12752 12753 Fixed several problems with the implementation of the 12754 ConcatenateResTemplate 12755 ASL operator. As per the ACPI specification, zero length buffers are now 12756 treated as a single EndTag. One-length buffers always cause a fatal 12757 exception. Non-zero length buffers that do not end with a full 2-byte 12758 EndTag 12759 cause a fatal exception. 12760 12761 Fixed a possible structure overwrite in the AcpiGetObjectInfo external 12762 interface. (With assistance from Thomas Renninger) 12763 12764 Code and Data Size: The current and previous library sizes for the core 12765 subsystem are shown below. These are the code and data sizes for the 12766 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 12767 These 12768 values do not include any ACPI driver or OSPM code. The debug version of 12769 the 12770 code includes the debug output trace mechanism and has a much larger code 12771 and data size. Note that these values will vary depending on the 12772 efficiency 12773 of the compiler and the compiler options used during generation. 12774 12775 Previous Release: 12776 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 12777 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 12778 Current Release: 12779 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 12780 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 12781 12782 12783 2) iASL Compiler/Disassembler: 12784 12785 Fixed an internal error that was generated for any forward references to 12786 ASL 12787 Alias objects. 12788 12789 ---------------------------------------- 12790 13 January 2006. Summary of changes for version 20060113: 12791 12792 1) ACPI CA Core Subsystem: 12793 12794 Added 2006 copyright to all module headers and signons. This affects 12795 virtually every file in the ACPICA core subsystem, iASL compiler, and the 12796 utilities. 12797 12798 Enhanced the ACPICA error reporting in order to simplify user migration 12799 to 12800 the non-debug version of ACPICA. Replaced all instances of the 12801 ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN 12802 debug 12803 levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros, 12804 respectively. This preserves all error and warning messages in the non- 12805 debug 12806 version of the ACPICA code (this has been referred to as the "debug lite" 12807 option.) Over 200 cases were converted to create a total of over 380 12808 error/warning messages across the ACPICA code. This increases the code 12809 and 12810 data size of the default non-debug version of the code somewhat (about 12811 13K), 12812 but all error/warning reporting may be disabled if desired (and code 12813 eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time 12814 configuration option. The size of the debug version of ACPICA remains 12815 about 12816 the same. 12817 12818 Fixed a memory leak within the AML Debugger "Set" command. One object was 12819 not properly deleted for every successful invocation of the command. 12820 12821 Code and Data Size: The current and previous library sizes for the core 12822 subsystem are shown below. These are the code and data sizes for the 12823 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 12824 These 12825 values do not include any ACPI driver or OSPM code. The debug version of 12826 the 12827 code includes the debug output trace mechanism and has a much larger code 12828 and data size. Note that these values will vary depending on the 12829 efficiency 12830 of the compiler and the compiler options used during generation. 12831 12832 Previous Release: 12833 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 12834 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 12835 Current Release: 12836 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 12837 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 12838 12839 12840 2) iASL Compiler/Disassembler: 12841 12842 The compiler now officially supports the ACPI 3.0a specification that was 12843 released on December 30, 2005. (Specification is available at 12844 www.acpi.info) 12845 12846 ---------------------------------------- 12847 16 December 2005. Summary of changes for version 20051216: 12848 12849 1) ACPI CA Core Subsystem: 12850 12851 Implemented optional support to allow unresolved names within ASL Package 12852 objects. A null object is inserted in the package when a named reference 12853 cannot be located in the current namespace. Enabled via the interpreter 12854 slack flag, this should eliminate AE_NOT_FOUND exceptions seen on 12855 machines 12856 that contain such code. 12857 12858 Implemented an optimization to the initialization sequence that can 12859 improve 12860 boot time. During ACPI device initialization, the _STA method is now run 12861 if 12862 and only if the _INI method exists. The _STA method is used to determine 12863 if 12864 the device is present; An _INI can only be run if _STA returns present, 12865 but 12866 it is a waste of time to run the _STA method if the _INI does not exist. 12867 (Prototype and assistance from Dong Wei) 12868 12869 Implemented use of the C99 uintptr_t for the pointer casting macros if it 12870 is 12871 available in the current compiler. Otherwise, the default (void *) cast 12872 is 12873 used as before. 12874 12875 Fixed some possible memory leaks found within the execution path of the 12876 Break, Continue, If, and CreateField operators. (Valery Podrezov) 12877 12878 Fixed a problem introduced in the 20051202 release where an exception is 12879 generated during method execution if a control method attempts to declare 12880 another method. 12881 12882 Moved resource descriptor string constants that are used by both the AML 12883 disassembler and AML debugger to the common utilities directory so that 12884 these components are independent. 12885 12886 Implemented support in the AcpiExec utility (-e switch) to globally 12887 ignore 12888 exceptions during control method execution (method is not aborted.) 12889 12890 Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix 12891 generation. 12892 12893 Code and Data Size: The current and previous library sizes for the core 12894 subsystem are shown below. These are the code and data sizes for the 12895 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 12896 These 12897 values do not include any ACPI driver or OSPM code. The debug version of 12898 the 12899 code includes the debug output trace mechanism and has a much larger code 12900 and data size. Note that these values will vary depending on the 12901 efficiency 12902 of the compiler and the compiler options used during generation. 12903 12904 Previous Release: 12905 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 12906 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 12907 Current Release: 12908 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 12909 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 12910 12911 12912 2) iASL Compiler/Disassembler: 12913 12914 Fixed a problem where a CPU stack overflow fault could occur if a 12915 recursive 12916 method call was made from within a Return statement. 12917 12918 ---------------------------------------- 12919 02 December 2005. Summary of changes for version 20051202: 12920 12921 1) ACPI CA Core Subsystem: 12922 12923 Modified the parsing of control methods to no longer create namespace 12924 objects during the first pass of the parse. Objects are now created only 12925 during the execute phase, at the moment the namespace creation operator 12926 is 12927 encountered in the AML (Name, OperationRegion, CreateByteField, etc.) 12928 This 12929 should eliminate ALREADY_EXISTS exceptions seen on some machines where 12930 reentrant control methods are protected by an AML mutex. The mutex will 12931 now 12932 correctly block multiple threads from attempting to create the same 12933 object 12934 more than once. 12935 12936 Increased the number of available Owner Ids for namespace object tracking 12937 from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen 12938 on 12939 some machines with a large number of ACPI tables (either static or 12940 dynamic). 12941 12942 Fixed a problem with the AcpiExec utility where a fault could occur when 12943 the 12944 -b switch (batch mode) is used. 12945 12946 Enhanced the namespace dump routine to output the owner ID for each 12947 namespace object. 12948 12949 Code and Data Size: The current and previous library sizes for the core 12950 subsystem are shown below. These are the code and data sizes for the 12951 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 12952 These 12953 values do not include any ACPI driver or OSPM code. The debug version of 12954 the 12955 code includes the debug output trace mechanism and has a much larger code 12956 and data size. Note that these values will vary depending on the 12957 efficiency 12958 of the compiler and the compiler options used during generation. 12959 12960 Previous Release: 12961 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 12962 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 12963 Current Release: 12964 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 12965 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 12966 12967 12968 2) iASL Compiler/Disassembler: 12969 12970 Fixed a parse error during compilation of certain Switch/Case constructs. 12971 To 12972 simplify the parse, the grammar now allows for multiple Default 12973 statements 12974 and this error is now detected and flagged during the analysis phase. 12975 12976 Disassembler: The disassembly now includes the contents of the original 12977 table header within a comment at the start of the file. This includes the 12978 name and version of the original ASL compiler. 12979 12980 ---------------------------------------- 12981 17 November 2005. Summary of changes for version 20051117: 12982 12983 1) ACPI CA Core Subsystem: 12984 12985 Fixed a problem in the AML parser where the method thread count could be 12986 decremented below zero if any errors occurred during the method parse 12987 phase. 12988 This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some 12989 machines. 12990 This also fixed a related regression with the mechanism that detects and 12991 corrects methods that cannot properly handle reentrancy (related to the 12992 deployment of the new OwnerId mechanism.) 12993 12994 Eliminated the pre-parsing of control methods (to detect errors) during 12995 table load. Related to the problem above, this was causing unwind issues 12996 if 12997 any errors occurred during the parse, and it seemed to be overkill. A 12998 table 12999 load should not be aborted if there are problems with any single control 13000 method, thus rendering this feature rather pointless. 13001 13002 Fixed a problem with the new table-driven resource manager where an 13003 internal 13004 buffer overflow could occur for small resource templates. 13005 13006 Implemented a new external interface, AcpiGetVendorResource. This 13007 interface 13008 will find and return a vendor-defined resource descriptor within a _CRS 13009 or 13010 _PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn 13011 Helgaas. 13012 13013 Removed the length limit (200) on string objects as per the upcoming ACPI 13014 3.0A specification. This affects the following areas of the interpreter: 13015 1) 13016 any implicit conversion of a Buffer to a String, 2) a String object 13017 result 13018 of the ASL Concatenate operator, 3) the String object result of the ASL 13019 ToString operator. 13020 13021 Fixed a problem in the Windows OS interface layer (OSL) where a 13022 WAIT_FOREVER 13023 on a semaphore object would incorrectly timeout. This allows the 13024 multithreading features of the AcpiExec utility to work properly under 13025 Windows. 13026 13027 Updated the Linux makefiles for the iASL compiler and AcpiExec to include 13028 the recently added file named "utresrc.c". 13029 13030 Code and Data Size: The current and previous library sizes for the core 13031 subsystem are shown below. These are the code and data sizes for the 13032 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 13033 These 13034 values do not include any ACPI driver or OSPM code. The debug version of 13035 the 13036 code includes the debug output trace mechanism and has a much larger code 13037 and data size. Note that these values will vary depending on the 13038 efficiency 13039 of the compiler and the compiler options used during generation. 13040 13041 Previous Release: 13042 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 13043 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 13044 Current Release: 13045 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 13046 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 13047 13048 13049 2) iASL Compiler/Disassembler: 13050 13051 Removed the limit (200) on string objects as per the upcoming ACPI 3.0A 13052 specification. For the iASL compiler, this means that string literals 13053 within 13054 the source ASL can be of any length. 13055 13056 Enhanced the listing output to dump the AML code for resource descriptors 13057 immediately after the ASL code for each descriptor, instead of in a block 13058 at 13059 the end of the entire resource template. 13060 13061 Enhanced the compiler debug output to dump the entire original parse tree 13062 constructed during the parse phase, before any transforms are applied to 13063 the 13064 tree. The transformed tree is dumped also. 13065 13066 ---------------------------------------- 13067 02 November 2005. Summary of changes for version 20051102: 13068 13069 1) ACPI CA Core Subsystem: 13070 13071 Modified the subsystem initialization sequence to improve GPE support. 13072 The 13073 GPE initialization has been split into two parts in order to defer 13074 execution 13075 of the _PRW methods (Power Resources for Wake) until after the hardware 13076 is 13077 fully initialized and the SCI handler is installed. This allows the _PRW 13078 methods to access fields protected by the Global Lock. This will fix 13079 systems 13080 where a NO_GLOBAL_LOCK exception has been seen during initialization. 13081 13082 Converted the ACPI internal object disassemble and display code within 13083 the 13084 AML debugger to fully table-driven operation, reducing code size and 13085 increasing maintainability. 13086 13087 Fixed a regression with the ConcatenateResTemplate() ASL operator 13088 introduced 13089 in the 20051021 release. 13090 13091 Implemented support for "local" internal ACPI object types within the 13092 debugger "Object" command and the AcpiWalkNamespace external interfaces. 13093 These local types include RegionFields, BankFields, IndexFields, Alias, 13094 and 13095 reference objects. 13096 13097 Moved common AML resource handling code into a new file, "utresrc.c". 13098 This 13099 code is shared by both the Resource Manager and the AML Debugger. 13100 13101 Code and Data Size: The current and previous library sizes for the core 13102 subsystem are shown below. These are the code and data sizes for the 13103 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 13104 These 13105 values do not include any ACPI driver or OSPM code. The debug version of 13106 the 13107 code includes the debug output trace mechanism and has a much larger code 13108 and data size. Note that these values will vary depending on the 13109 efficiency 13110 of the compiler and the compiler options used during generation. 13111 13112 Previous Release: 13113 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 13114 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 13115 Current Release: 13116 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 13117 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 13118 13119 13120 2) iASL Compiler/Disassembler: 13121 13122 Fixed a problem with very large initializer lists (more than 4000 13123 elements) 13124 for both Buffer and Package objects where the parse stack could overflow. 13125 13126 Enhanced the pre-compile source code scan for non-ASCII characters to 13127 ignore 13128 characters within comment fields. The scan is now always performed and is 13129 no 13130 longer optional, detecting invalid characters within a source file 13131 immediately rather than during the parse phase or later. 13132 13133 Enhanced the ASL grammar definition to force early reductions on all 13134 list- 13135 style grammar elements so that the overall parse stack usage is greatly 13136 reduced. This should improve performance and reduce the possibility of 13137 parse 13138 stack overflow. 13139 13140 Eliminated all reduce/reduce conflicts in the iASL parser generation. 13141 Also, 13142 with the addition of a %expected statement, the compiler generates from 13143 source with no warnings. 13144 13145 Fixed a possible segment fault in the disassembler if the input filename 13146 does not contain a "dot" extension (Thomas Renninger). 13147 13148 ---------------------------------------- 13149 21 October 2005. Summary of changes for version 20051021: 13150 13151 1) ACPI CA Core Subsystem: 13152 13153 Implemented support for the EM64T and other x86-64 processors. This 13154 essentially entails recognizing that these processors support non-aligned 13155 memory transfers. Previously, all 64-bit processors were assumed to lack 13156 hardware support for non-aligned transfers. 13157 13158 Completed conversion of the Resource Manager to nearly full table-driven 13159 operation. Specifically, the resource conversion code (convert AML to 13160 internal format and the reverse) and the debug code to dump internal 13161 resource descriptors are fully table-driven, reducing code and data size 13162 and 13163 improving maintainability. 13164 13165 The OSL interfaces for Acquire and Release Lock now use a 64-bit flag 13166 word 13167 on 64-bit processors instead of a fixed 32-bit word. (With assistance 13168 from 13169 Alexey Starikovskiy) 13170 13171 Implemented support within the resource conversion code for the Type- 13172 Specific byte within the various ACPI 3.0 *WordSpace macros. 13173 13174 Fixed some issues within the resource conversion code for the type- 13175 specific 13176 flags for both Memory and I/O address resource descriptors. For Memory, 13177 implemented support for the MTP and TTP flags. For I/O, split the TRS and 13178 TTP flags into two separate fields. 13179 13180 Code and Data Size: The current and previous library sizes for the core 13181 subsystem are shown below. These are the code and data sizes for the 13182 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 13183 These 13184 values do not include any ACPI driver or OSPM code. The debug version of 13185 the 13186 code includes the debug output trace mechanism and has a much larger code 13187 and data size. Note that these values will vary depending on the 13188 efficiency 13189 of the compiler and the compiler options used during generation. 13190 13191 Previous Release: 13192 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 13193 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 13194 Current Release: 13195 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 13196 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 13197 13198 13199 13200 2) iASL Compiler/Disassembler: 13201 13202 Relaxed a compiler restriction that disallowed a ResourceIndex byte if 13203 the 13204 corresponding ResourceSource string was not also present in a resource 13205 descriptor declaration. This restriction caused problems with existing 13206 AML/ASL code that includes the Index byte without the string. When such 13207 AML 13208 was disassembled, it could not be compiled without modification. Further, 13209 the modified code created a resource template with a different size than 13210 the 13211 original, breaking code that used fixed offsets into the resource 13212 template 13213 buffer. 13214 13215 Removed a recent feature of the disassembler to ignore a lone 13216 ResourceIndex 13217 byte. This byte is now emitted if present so that the exact AML can be 13218 reproduced when the disassembled code is recompiled. 13219 13220 Improved comments and text alignment for the resource descriptor code 13221 emitted by the disassembler. 13222 13223 Implemented disassembler support for the ACPI 3.0 AccessSize field within 13224 a 13225 Register() resource descriptor. 13226 13227 ---------------------------------------- 13228 30 September 2005. Summary of changes for version 20050930: 13229 13230 1) ACPI CA Core Subsystem: 13231 13232 Completed a major overhaul of the Resource Manager code - specifically, 13233 optimizations in the area of the AML/internal resource conversion code. 13234 The 13235 code has been optimized to simplify and eliminate duplicated code, CPU 13236 stack 13237 use has been decreased by optimizing function parameters and local 13238 variables, and naming conventions across the manager have been 13239 standardized 13240 for clarity and ease of maintenance (this includes function, parameter, 13241 variable, and struct/typedef names.) The update may force changes in some 13242 driver code, depending on how resources are handled by the host OS. 13243 13244 All Resource Manager dispatch and information tables have been moved to a 13245 single location for clarity and ease of maintenance. One new file was 13246 created, named "rsinfo.c". 13247 13248 The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to 13249 guarantee that the argument is not evaluated twice, making them less 13250 prone 13251 to macro side-effects. However, since there exists the possibility of 13252 additional stack use if a particular compiler cannot optimize them (such 13253 as 13254 in the debug generation case), the original macros are optionally 13255 available. 13256 Note that some invocations of the return_VALUE macro may now cause size 13257 mismatch warnings; the return_UINT8 and return_UINT32 macros are provided 13258 to 13259 eliminate these. (From Randy Dunlap) 13260 13261 Implemented a new mechanism to enable debug tracing for individual 13262 control 13263 methods. A new external interface, AcpiDebugTrace, is provided to enable 13264 this mechanism. The intent is to allow the host OS to easily enable and 13265 disable tracing for problematic control methods. This interface can be 13266 easily exposed to a user or debugger interface if desired. See the file 13267 psxface.c for details. 13268 13269 AcpiUtCallocate will now return a valid pointer if a length of zero is 13270 specified - a length of one is used and a warning is issued. This matches 13271 the behavior of AcpiUtAllocate. 13272 13273 Code and Data Size: The current and previous library sizes for the core 13274 subsystem are shown below. These are the code and data sizes for the 13275 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 13276 These 13277 values do not include any ACPI driver or OSPM code. The debug version of 13278 the 13279 code includes the debug output trace mechanism and has a much larger code 13280 and data size. Note that these values will vary depending on the 13281 efficiency 13282 of the compiler and the compiler options used during generation. 13283 13284 Previous Release: 13285 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 13286 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 13287 Current Release: 13288 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 13289 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 13290 13291 13292 2) iASL Compiler/Disassembler: 13293 13294 A remark is issued if the effective compile-time length of a package or 13295 buffer is zero. Previously, this was a warning. 13296 13297 ---------------------------------------- 13298 16 September 2005. Summary of changes for version 20050916: 13299 13300 1) ACPI CA Core Subsystem: 13301 13302 Fixed a problem within the Resource Manager where support for the Generic 13303 Register descriptor was not fully implemented. This descriptor is now 13304 fully 13305 recognized, parsed, disassembled, and displayed. 13306 13307 Completely restructured the Resource Manager code to utilize table-driven 13308 dispatch and lookup, eliminating many of the large switch() statements. 13309 This 13310 reduces overall subsystem code size and code complexity. Affects the 13311 resource parsing and construction, disassembly, and debug dump output. 13312 13313 Cleaned up and restructured the debug dump output for all resource 13314 descriptors. Improved readability of the output and reduced code size. 13315 13316 Fixed a problem where changes to internal data structures caused the 13317 optional ACPI_MUTEX_DEBUG code to fail compilation if specified. 13318 13319 Code and Data Size: The current and previous library sizes for the core 13320 subsystem are shown below. These are the code and data sizes for the 13321 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 13322 These 13323 values do not include any ACPI driver or OSPM code. The debug version of 13324 the 13325 code includes the debug output trace mechanism and has a much larger code 13326 and data size. Note that these values will vary depending on the 13327 efficiency 13328 of the compiler and the compiler options used during generation. 13329 13330 Previous Release: 13331 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 13332 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 13333 Current Release: 13334 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 13335 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 13336 13337 13338 2) iASL Compiler/Disassembler: 13339 13340 Updated the disassembler to automatically insert an EndDependentFn() 13341 macro 13342 into the ASL stream if this macro is missing in the original AML code, 13343 simplifying compilation of the resulting ASL module. 13344 13345 Fixed a problem in the disassembler where a disassembled ResourceSource 13346 string (within a large resource descriptor) was not surrounded by quotes 13347 and 13348 not followed by a comma, causing errors when the resulting ASL module was 13349 compiled. Also, escape sequences within a ResourceSource string are now 13350 handled correctly (especially "\\") 13351 13352 ---------------------------------------- 13353 02 September 2005. Summary of changes for version 20050902: 13354 13355 1) ACPI CA Core Subsystem: 13356 13357 Fixed a problem with the internal Owner ID allocation and deallocation 13358 mechanisms for control method execution and recursive method invocation. 13359 This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId" 13360 messages seen on some systems. Recursive method invocation depth is 13361 currently limited to 255. (Alexey Starikovskiy) 13362 13363 Completely eliminated all vestiges of support for the "module-level 13364 executable code" until this support is fully implemented and debugged. 13365 This 13366 should eliminate the NO_RETURN_VALUE exceptions seen during table load on 13367 some systems that invoke this support. 13368 13369 Fixed a problem within the resource manager code where the transaction 13370 flags 13371 for a 64-bit address descriptor were handled incorrectly in the type- 13372 specific flag byte. 13373 13374 Consolidated duplicate code within the address descriptor resource 13375 manager 13376 code, reducing overall subsystem code size. 13377 13378 Fixed a fault when using the AML debugger "disassemble" command to 13379 disassemble individual control methods. 13380 13381 Removed references to the "release_current" directory within the Unix 13382 release package. 13383 13384 Code and Data Size: The current and previous core subsystem library sizes 13385 are shown below. These are the code and data sizes for the acpica.lib 13386 produced by the Microsoft Visual C++ 6.0 compiler. These values do not 13387 include any ACPI driver or OSPM code. The debug version of the code 13388 includes 13389 the debug output trace mechanism and has a much larger code and data 13390 size. 13391 Note that these values will vary depending on the efficiency of the 13392 compiler 13393 and the compiler options used during generation. 13394 13395 Previous Release: 13396 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 13397 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 13398 Current Release: 13399 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 13400 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 13401 13402 13403 2) iASL Compiler/Disassembler: 13404 13405 Implemented an error check for illegal duplicate values in the interrupt 13406 and 13407 dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and 13408 Interrupt(). 13409 13410 Implemented error checking for the Irq() and IrqNoFlags() macros to 13411 detect 13412 too many values in the interrupt list (16 max) and invalid values in the 13413 list (range 0 - 15) 13414 13415 The maximum length string literal within an ASL file is now restricted to 13416 200 characters as per the ACPI specification. 13417 13418 Fixed a fault when using the -ln option (generate namespace listing). 13419 13420 Implemented an error check to determine if a DescriptorName within a 13421 resource descriptor has already been used within the current scope. 13422 13423 ---------------------------------------- 13424 15 August 2005. Summary of changes for version 20050815: 13425 13426 1) ACPI CA Core Subsystem: 13427 13428 Implemented a full bytewise compare to determine if a table load request 13429 is 13430 attempting to load a duplicate table. The compare is performed if the 13431 table 13432 signatures and table lengths match. This will allow different tables with 13433 the same OEM Table ID and revision to be loaded - probably against the 13434 ACPI 13435 specification, but discovered in the field nonetheless. 13436 13437 Added the changes.txt logfile to each of the zipped release packages. 13438 13439 Code and Data Size: Current and previous core subsystem library sizes are 13440 shown below. These are the code and data sizes for the acpica.lib 13441 produced 13442 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 13443 any ACPI driver or OSPM code. The debug version of the code includes the 13444 debug output trace mechanism and has a much larger code and data size. 13445 Note 13446 that these values will vary depending on the efficiency of the compiler 13447 and 13448 the compiler options used during generation. 13449 13450 Previous Release: 13451 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 13452 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 13453 Current Release: 13454 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 13455 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 13456 13457 13458 2) iASL Compiler/Disassembler: 13459 13460 Fixed a problem where incorrect AML code could be generated for Package 13461 objects if optimization is disabled (via the -oa switch). 13462 13463 Fixed a problem with where incorrect AML code is generated for variable- 13464 length packages when the package length is not specified and the number 13465 of 13466 initializer values is greater than 255. 13467 13468 13469 ---------------------------------------- 13470 29 July 2005. Summary of changes for version 20050729: 13471 13472 1) ACPI CA Core Subsystem: 13473 13474 Implemented support to ignore an attempt to install/load a particular 13475 ACPI 13476 table more than once. Apparently there exists BIOS code that repeatedly 13477 attempts to load the same SSDT upon certain events. With assistance from 13478 Venkatesh Pallipadi. 13479 13480 Restructured the main interface to the AML parser in order to correctly 13481 handle all exceptional conditions. This will prevent leakage of the 13482 OwnerId 13483 resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on 13484 some 13485 machines. With assistance from Alexey Starikovskiy. 13486 13487 Support for "module level code" has been disabled in this version due to 13488 a 13489 number of issues that have appeared on various machines. The support can 13490 be 13491 enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem 13492 compilation. When the issues are fully resolved, the code will be enabled 13493 by 13494 default again. 13495 13496 Modified the internal functions for debug print support to define the 13497 FunctionName parameter as a (const char *) for compatibility with 13498 compiler 13499 built-in macros such as __FUNCTION__, etc. 13500 13501 Linted the entire ACPICA source tree for both 32-bit and 64-bit. 13502 13503 Implemented support to display an object count summary for the AML 13504 Debugger 13505 commands Object and Methods. 13506 13507 Code and Data Size: Current and previous core subsystem library sizes are 13508 shown below. These are the code and data sizes for the acpica.lib 13509 produced 13510 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 13511 any ACPI driver or OSPM code. The debug version of the code includes the 13512 debug output trace mechanism and has a much larger code and data size. 13513 Note 13514 that these values will vary depending on the efficiency of the compiler 13515 and 13516 the compiler options used during generation. 13517 13518 Previous Release: 13519 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 13520 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 13521 Current Release: 13522 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 13523 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 13524 13525 13526 2) iASL Compiler/Disassembler: 13527 13528 Fixed a regression that appeared in the 20050708 version of the compiler 13529 where an error message was inadvertently emitted for invocations of the 13530 _OSI 13531 reserved control method. 13532 13533 ---------------------------------------- 13534 08 July 2005. Summary of changes for version 20050708: 13535 13536 1) ACPI CA Core Subsystem: 13537 13538 The use of the CPU stack in the debug version of the subsystem has been 13539 considerably reduced. Previously, a debug structure was declared in every 13540 function that used the debug macros. This structure has been removed in 13541 favor of declaring the individual elements as parameters to the debug 13542 functions. This reduces the cumulative stack use during nested execution 13543 of 13544 ACPI function calls at the cost of a small increase in the code size of 13545 the 13546 debug version of the subsystem. With assistance from Alexey Starikovskiy 13547 and 13548 Len Brown. 13549 13550 Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent 13551 headers to define a macro that will return the current function name at 13552 runtime (such as __FUNCTION__ or _func_, etc.) The function name is used 13553 by 13554 the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the 13555 compiler-dependent header, the function name is saved on the CPU stack 13556 (one 13557 pointer per function.) This mechanism is used because apparently there 13558 exists no standard ANSI-C defined macro that that returns the function 13559 name. 13560 13561 Redesigned and reimplemented the "Owner ID" mechanism used to track 13562 namespace objects created/deleted by ACPI tables and control method 13563 execution. A bitmap is now used to allocate and free the IDs, thus 13564 solving 13565 the wraparound problem present in the previous implementation. The size 13566 of 13567 the namespace node descriptor was reduced by 2 bytes as a result (Alexey 13568 Starikovskiy). 13569 13570 Removed the UINT32_BIT and UINT16_BIT types that were used for the 13571 bitfield 13572 flag definitions within the headers for the predefined ACPI tables. These 13573 have been replaced by UINT8_BIT in order to increase the code portability 13574 of 13575 the subsystem. If the use of UINT8 remains a problem, we may be forced to 13576 eliminate bitfields entirely because of a lack of portability. 13577 13578 Enhanced the performance of the AcpiUtUpdateObjectReference procedure. 13579 This 13580 is a frequently used function and this improvement increases the 13581 performance 13582 of the entire subsystem (Alexey Starikovskiy). 13583 13584 Fixed several possible memory leaks and the inverse - premature object 13585 deletion (Alexey Starikovskiy). 13586 13587 Code and Data Size: Current and previous core subsystem library sizes are 13588 shown below. These are the code and data sizes for the acpica.lib 13589 produced 13590 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 13591 any ACPI driver or OSPM code. The debug version of the code includes the 13592 debug output trace mechanism and has a much larger code and data size. 13593 Note 13594 that these values will vary depending on the efficiency of the compiler 13595 and 13596 the compiler options used during generation. 13597 13598 Previous Release: 13599 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 13600 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 13601 Current Release: 13602 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 13603 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 13604 13605 ---------------------------------------- 13606 24 June 2005. Summary of changes for version 20050624: 13607 13608 1) ACPI CA Core Subsystem: 13609 13610 Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for 13611 the host-defined cache object. This allows the OSL implementation to 13612 define 13613 and type this object in any manner desired, simplifying the OSL 13614 implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for 13615 Linux, and should be defined in the OS-specific header file for other 13616 operating systems as required. 13617 13618 Changed the interface to AcpiOsAcquireObject to directly return the 13619 requested object as the function return (instead of ACPI_STATUS.) This 13620 change was made for performance reasons, since this is the purpose of the 13621 interface in the first place. AcpiOsAcquireObject is now similar to the 13622 AcpiOsAllocate interface. 13623 13624 Implemented a new AML debugger command named Businfo. This command 13625 displays 13626 information about all devices that have an associate _PRT object. The 13627 _ADR, 13628 _HID, _UID, and _CID are displayed for these devices. 13629 13630 Modified the initialization sequence in AcpiInitializeSubsystem to call 13631 the 13632 OSL interface AcpiOslInitialize first, before any local initialization. 13633 This 13634 change was required because the global initialization now calls OSL 13635 interfaces. 13636 13637 Enhanced the Dump command to display the entire contents of Package 13638 objects 13639 (including all sub-objects and their values.) 13640 13641 Restructured the code base to split some files because of size and/or 13642 because the code logically belonged in a separate file. New files are 13643 listed 13644 below. All makefiles and project files included in the ACPI CA release 13645 have 13646 been updated. 13647 utilities/utcache.c /* Local cache interfaces */ 13648 utilities/utmutex.c /* Local mutex support */ 13649 utilities/utstate.c /* State object support */ 13650 interpreter/parser/psloop.c /* Main AML parse loop */ 13651 13652 Code and Data Size: Current and previous core subsystem library sizes are 13653 shown below. These are the code and data sizes for the acpica.lib 13654 produced 13655 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 13656 any ACPI driver or OSPM code. The debug version of the code includes the 13657 debug output trace mechanism and has a much larger code and data size. 13658 Note 13659 that these values will vary depending on the efficiency of the compiler 13660 and 13661 the compiler options used during generation. 13662 13663 Previous Release: 13664 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 13665 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 13666 Current Release: 13667 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 13668 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 13669 13670 13671 2) iASL Compiler/Disassembler: 13672 13673 Fixed a regression introduced in version 20050513 where the use of a 13674 Package 13675 object within a Case() statement caused a compile time exception. The 13676 original behavior has been restored (a Match() operator is emitted.) 13677 13678 ---------------------------------------- 13679 17 June 2005. Summary of changes for version 20050617: 13680 13681 1) ACPI CA Core Subsystem: 13682 13683 Moved the object cache operations into the OS interface layer (OSL) to 13684 allow 13685 the host OS to handle these operations if desired (for example, the Linux 13686 OSL will invoke the slab allocator). This support is optional; the 13687 compile 13688 time define ACPI_USE_LOCAL_CACHE may be used to utilize the original 13689 cache 13690 code in the ACPI CA core. The new OSL interfaces are shown below. See 13691 utalloc.c for an example implementation, and acpiosxf.h for the exact 13692 interface definitions. With assistance from Alexey Starikovskiy. 13693 AcpiOsCreateCache 13694 AcpiOsDeleteCache 13695 AcpiOsPurgeCache 13696 AcpiOsAcquireObject 13697 AcpiOsReleaseObject 13698 13699 Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to 13700 return 13701 and restore a flags parameter. This fits better with many OS lock models. 13702 Note: the current execution state (interrupt handler or not) is no longer 13703 passed to these interfaces. If necessary, the OSL must determine this 13704 state 13705 by itself, a simple and fast operation. With assistance from Alexey 13706 Starikovskiy. 13707 13708 Fixed a problem in the ACPI table handling where a valid XSDT was assumed 13709 present if the revision of the RSDP was 2 or greater. According to the 13710 ACPI 13711 specification, the XSDT is optional in all cases, and the table manager 13712 therefore now checks for both an RSDP >=2 and a valid XSDT pointer. 13713 Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs 13714 contain 13715 only the RSDT. 13716 13717 Fixed an interpreter problem with the Mid() operator in the case of an 13718 input 13719 string where the resulting output string is of zero length. It now 13720 correctly 13721 returns a valid, null terminated string object instead of a string object 13722 with a null pointer. 13723 13724 Fixed a problem with the control method argument handling to allow a 13725 store 13726 to an Arg object that already contains an object of type Device. The 13727 Device 13728 object is now correctly overwritten. Previously, an error was returned. 13729 13730 13731 Enhanced the debugger Find command to emit object values in addition to 13732 the 13733 found object pathnames. The output format is the same as the dump 13734 namespace 13735 command. 13736 13737 Enhanced the debugger Set command. It now has the ability to set the 13738 value 13739 of any Named integer object in the namespace (Previously, only method 13740 locals 13741 and args could be set.) 13742 13743 Code and Data Size: Current and previous core subsystem library sizes are 13744 shown below. These are the code and data sizes for the acpica.lib 13745 produced 13746 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 13747 any ACPI driver or OSPM code. The debug version of the code includes the 13748 debug output trace mechanism and has a much larger code and data size. 13749 Note 13750 that these values will vary depending on the efficiency of the compiler 13751 and 13752 the compiler options used during generation. 13753 13754 Previous Release: 13755 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 13756 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 13757 Current Release: 13758 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 13759 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 13760 13761 13762 2) iASL Compiler/Disassembler: 13763 13764 Fixed a regression in the disassembler where if/else/while constructs 13765 were 13766 output incorrectly. This problem was introduced in the previous release 13767 (20050526). This problem also affected the single-step disassembly in the 13768 debugger. 13769 13770 Fixed a problem where compiling the reserved _OSI method would randomly 13771 (but 13772 rarely) produce compile errors. 13773 13774 Enhanced the disassembler to emit compilable code in the face of 13775 incorrect 13776 AML resource descriptors. If the optional ResourceSourceIndex is present, 13777 but the ResourceSource is not, do not emit the ResourceSourceIndex in the 13778 disassembly. Otherwise, the resulting code cannot be compiled without 13779 errors. 13780 13781 ---------------------------------------- 13782 26 May 2005. Summary of changes for version 20050526: 13783 13784 1) ACPI CA Core Subsystem: 13785 13786 Implemented support to execute Type 1 and Type 2 AML opcodes appearing at 13787 the module level (not within a control method.) These opcodes are 13788 executed 13789 exactly once at the time the table is loaded. This type of code was legal 13790 up 13791 until the release of ACPI 2.0B (2002) and is now supported within ACPI CA 13792 in 13793 order to provide backwards compatibility with earlier BIOS 13794 implementations. 13795 This eliminates the "Encountered executable code at module level" warning 13796 that was previously generated upon detection of such code. 13797 13798 Fixed a problem in the interpreter where an AE_NOT_FOUND exception could 13799 inadvertently be generated during the lookup of namespace objects in the 13800 second pass parse of ACPI tables and control methods. It appears that 13801 this 13802 problem could occur during the resolution of forward references to 13803 namespace 13804 objects. 13805 13806 Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function, 13807 corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This 13808 allows the deadlock detection debug code to be compiled out in the normal 13809 case, improving mutex performance (and overall subsystem performance) 13810 considerably. 13811 13812 Implemented a handful of miscellaneous fixes for possible memory leaks on 13813 error conditions and error handling control paths. These fixes were 13814 suggested by FreeBSD and the Coverity Prevent source code analysis tool. 13815 13816 Added a check for a null RSDT pointer in AcpiGetFirmwareTable 13817 (tbxfroot.c) 13818 to prevent a fault in this error case. 13819 13820 Code and Data Size: Current and previous core subsystem library sizes are 13821 shown below. These are the code and data sizes for the acpica.lib 13822 produced 13823 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 13824 any ACPI driver or OSPM code. The debug version of the code includes the 13825 debug output trace mechanism and has a much larger code and data size. 13826 Note 13827 that these values will vary depending on the efficiency of the compiler 13828 and 13829 the compiler options used during generation. 13830 13831 Previous Release: 13832 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 13833 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 13834 Current Release: 13835 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 13836 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 13837 13838 13839 2) iASL Compiler/Disassembler: 13840 13841 Implemented support to allow Type 1 and Type 2 ASL operators to appear at 13842 the module level (not within a control method.) These operators will be 13843 executed once at the time the table is loaded. This type of code was 13844 legal 13845 up until the release of ACPI 2.0B (2002) and is now supported by the iASL 13846 compiler in order to provide backwards compatibility with earlier BIOS 13847 ASL 13848 code. 13849 13850 The ACPI integer width (specified via the table revision ID or the -r 13851 override, 32 or 64 bits) is now used internally during compile-time 13852 constant 13853 folding to ensure that constants are truncated to 32 bits if necessary. 13854 Previously, the revision ID value was only emitted in the AML table 13855 header. 13856 13857 An error message is now generated for the Mutex and Method operators if 13858 the 13859 SyncLevel parameter is outside the legal range of 0 through 15. 13860 13861 Fixed a problem with the Method operator ParameterTypes list handling 13862 (ACPI 13863 3.0). Previously, more than 2 types or 2 arguments generated a syntax 13864 error. 13865 The actual underlying implementation of method argument typechecking is 13866 still under development, however. 13867 13868 ---------------------------------------- 13869 13 May 2005. Summary of changes for version 20050513: 13870 13871 1) ACPI CA Core Subsystem: 13872 13873 Implemented support for PCI Express root bridges -- added support for 13874 device 13875 PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup. 13876 13877 The interpreter now automatically truncates incoming 64-bit constants to 13878 32 13879 bits if currently executing out of a 32-bit ACPI table (Revision < 2). 13880 This 13881 also affects the iASL compiler constant folding. (Note: as per below, the 13882 iASL compiler no longer allows 64-bit constants within 32-bit tables.) 13883 13884 Fixed a problem where string and buffer objects with "static" pointers 13885 (pointers to initialization data within an ACPI table) were not handled 13886 consistently. The internal object copy operation now always copies the 13887 data 13888 to a newly allocated buffer, regardless of whether the source object is 13889 static or not. 13890 13891 Fixed a problem with the FromBCD operator where an implicit result 13892 conversion was improperly performed while storing the result to the 13893 target 13894 operand. Since this is an "explicit conversion" operator, the implicit 13895 conversion should never be performed on the output. 13896 13897 Fixed a problem with the CopyObject operator where a copy to an existing 13898 named object did not always completely overwrite the existing object 13899 stored 13900 at name. Specifically, a buffer-to-buffer copy did not delete the 13901 existing 13902 buffer. 13903 13904 Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces 13905 and 13906 structs for consistency. 13907 13908 Code and Data Size: Current and previous core subsystem library sizes are 13909 shown below. These are the code and data sizes for the acpica.lib 13910 produced 13911 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 13912 any ACPI driver or OSPM code. The debug version of the code includes the 13913 debug output trace mechanism and has a much larger code and data size. 13914 Note 13915 that these values will vary depending on the efficiency of the compiler 13916 and 13917 the compiler options used during generation. 13918 13919 Previous Release: 13920 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 13921 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 13922 Current Release: (Same sizes) 13923 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 13924 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 13925 13926 13927 2) iASL Compiler/Disassembler: 13928 13929 The compiler now emits a warning if an attempt is made to generate a 64- 13930 bit 13931 integer constant from within a 32-bit ACPI table (Revision < 2). The 13932 integer 13933 is truncated to 32 bits. 13934 13935 Fixed a problem with large package objects: if the static length of the 13936 package is greater than 255, the "variable length package" opcode is 13937 emitted. Previously, this caused an error. This requires an update to the 13938 ACPI spec, since it currently (incorrectly) states that packages larger 13939 than 13940 255 elements are not allowed. 13941 13942 The disassembler now correctly handles variable length packages and 13943 packages 13944 larger than 255 elements. 13945 13946 ---------------------------------------- 13947 08 April 2005. Summary of changes for version 20050408: 13948 13949 1) ACPI CA Core Subsystem: 13950 13951 Fixed three cases in the interpreter where an "index" argument to an ASL 13952 function was still (internally) 32 bits instead of the required 64 bits. 13953 This was the Index argument to the Index, Mid, and Match operators. 13954 13955 The "strupr" function is now permanently local (AcpiUtStrupr), since this 13956 is 13957 not a POSIX-defined function and not present in most kernel-level C 13958 libraries. All references to the C library strupr function have been 13959 removed 13960 from the headers. 13961 13962 Completed the deployment of static functions/prototypes. All prototypes 13963 with 13964 the static attribute have been moved from the headers to the owning C 13965 file. 13966 13967 Implemented an extract option (-e) for the AcpiBin utility (AML binary 13968 utility). This option allows the utility to extract individual ACPI 13969 tables 13970 from the output of AcpiDmp. It provides the same functionality of the 13971 acpixtract.pl perl script without the worry of setting the correct perl 13972 options. AcpiBin runs on Windows and has not yet been generated/validated 13973 in 13974 the Linux/Unix environment (but should be soon). 13975 13976 Updated and fixed the table dump option for AcpiBin (-d). This option 13977 converts a single ACPI table to a hex/ascii file, similar to the output 13978 of 13979 AcpiDmp. 13980 13981 Code and Data Size: Current and previous core subsystem library sizes are 13982 shown below. These are the code and data sizes for the acpica.lib 13983 produced 13984 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 13985 any ACPI driver or OSPM code. The debug version of the code includes the 13986 debug output trace mechanism and has a much larger code and data size. 13987 Note 13988 that these values will vary depending on the efficiency of the compiler 13989 and 13990 the compiler options used during generation. 13991 13992 Previous Release: 13993 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 13994 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 13995 Current Release: 13996 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 13997 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 13998 13999 14000 2) iASL Compiler/Disassembler: 14001 14002 Disassembler fix: Added a check to ensure that the table length found in 14003 the 14004 ACPI table header within the input file is not longer than the actual 14005 input 14006 file size. This indicates some kind of file or table corruption. 14007 14008 ---------------------------------------- 14009 29 March 2005. Summary of changes for version 20050329: 14010 14011 1) ACPI CA Core Subsystem: 14012 14013 An error is now generated if an attempt is made to create a Buffer Field 14014 of 14015 length zero (A CreateField with a length operand of zero.) 14016 14017 The interpreter now issues a warning whenever executable code at the 14018 module 14019 level is detected during ACPI table load. This will give some idea of the 14020 prevalence of this type of code. 14021 14022 Implemented support for references to named objects (other than control 14023 methods) within package objects. 14024 14025 Enhanced package object output for the debug object. Package objects are 14026 now 14027 completely dumped, showing all elements. 14028 14029 Enhanced miscellaneous object output for the debug object. Any object can 14030 now be written to the debug object (for example, a device object can be 14031 written, and the type of the object will be displayed.) 14032 14033 The "static" qualifier has been added to all local functions across both 14034 the 14035 core subsystem and the iASL compiler. 14036 14037 The number of "long" lines (> 80 chars) within the source has been 14038 significantly reduced, by about 1/3. 14039 14040 Cleaned up all header files to ensure that all CA/iASL functions are 14041 prototyped (even static functions) and the formatting is consistent. 14042 14043 Two new header files have been added, acopcode.h and acnames.h. 14044 14045 Removed several obsolete functions that were no longer used. 14046 14047 Code and Data Size: Current and previous core subsystem library sizes are 14048 shown below. These are the code and data sizes for the acpica.lib 14049 produced 14050 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 14051 any ACPI driver or OSPM code. The debug version of the code includes the 14052 debug output trace mechanism and has a much larger code and data size. 14053 Note 14054 that these values will vary depending on the efficiency of the compiler 14055 and 14056 the compiler options used during generation. 14057 14058 Previous Release: 14059 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 14060 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 14061 Current Release: 14062 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 14063 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 14064 14065 14066 14067 2) iASL Compiler/Disassembler: 14068 14069 Fixed a problem with the resource descriptor generation/support. For the 14070 ResourceSourceIndex and the ResourceSource fields, both must be present, 14071 or 14072 both must be not present - can't have one without the other. 14073 14074 The compiler now returns non-zero from the main procedure if any errors 14075 have 14076 occurred during the compilation. 14077 14078 14079 ---------------------------------------- 14080 09 March 2005. Summary of changes for version 20050309: 14081 14082 1) ACPI CA Core Subsystem: 14083 14084 The string-to-buffer implicit conversion code has been modified again 14085 after 14086 a change to the ACPI specification. In order to match the behavior of 14087 the 14088 other major ACPI implementation, the target buffer is no longer truncated 14089 if 14090 the source string is smaller than an existing target buffer. This change 14091 requires an update to the ACPI spec, and should eliminate the recent 14092 AE_AML_BUFFER_LIMIT issues. 14093 14094 The "implicit return" support was rewritten to a new algorithm that 14095 solves 14096 the general case. Rather than attempt to determine when a method is about 14097 to 14098 exit, the result of every ASL operator is saved momentarily until the 14099 very 14100 next ASL operator is executed. Therefore, no matter how the method exits, 14101 there will always be a saved implicit return value. This feature is only 14102 enabled with the AcpiGbl_EnableInterpreterSlack flag, and should 14103 eliminate 14104 AE_AML_NO_RETURN_VALUE errors when enabled. 14105 14106 Implemented implicit conversion support for the predicate (operand) of 14107 the 14108 If, Else, and While operators. String and Buffer arguments are 14109 automatically 14110 converted to Integers. 14111 14112 Changed the string-to-integer conversion behavior to match the new ACPI 14113 errata: "If no integer object exists, a new integer is created. The ASCII 14114 string is interpreted as a hexadecimal constant. Each string character is 14115 interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting 14116 with the first character as the most significant digit, and ending with 14117 the 14118 first non-hexadecimal character or end-of-string." This means that the 14119 first 14120 non-hex character terminates the conversion and this is the code that was 14121 changed. 14122 14123 Fixed a problem where the ObjectType operator would fail (fault) when 14124 used 14125 on an Index of a Package which pointed to a null package element. The 14126 operator now properly returns zero (Uninitialized) in this case. 14127 14128 Fixed a problem where the While operator used excessive memory by not 14129 properly popping the result stack during execution. There was no memory 14130 leak 14131 after execution, however. (Code provided by Valery Podrezov.) 14132 14133 Fixed a problem where references to control methods within Package 14134 objects 14135 caused the method to be invoked, instead of producing a reference object 14136 pointing to the method. 14137 14138 Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree) 14139 to 14140 improve performance and reduce code size. (Code provided by Alexey 14141 Starikovskiy.) 14142 14143 Code and Data Size: Current and previous core subsystem library sizes are 14144 shown below. These are the code and data sizes for the acpica.lib 14145 produced 14146 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 14147 any ACPI driver or OSPM code. The debug version of the code includes the 14148 debug output trace mechanism and has a much larger code and data size. 14149 Note 14150 that these values will vary depending on the efficiency of the compiler 14151 and 14152 the compiler options used during generation. 14153 14154 Previous Release: 14155 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 14156 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 14157 Current Release: 14158 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 14159 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 14160 14161 14162 2) iASL Compiler/Disassembler: 14163 14164 Fixed a problem with the Return operator with no arguments. Since the AML 14165 grammar for the byte encoding requires an operand for the Return opcode, 14166 the 14167 compiler now emits a Return(Zero) for this case. An ACPI specification 14168 update has been written for this case. 14169 14170 For tables other than the DSDT, namepath optimization is automatically 14171 disabled. This is because SSDTs can be loaded anywhere in the namespace, 14172 the 14173 compiler has no knowledge of where, and thus cannot optimize namepaths. 14174 14175 Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was 14176 inadvertently omitted from the ACPI specification, and will require an 14177 update to the spec. 14178 14179 The source file scan for ASCII characters is now optional (-a). This 14180 change 14181 was made because some vendors place non-ascii characters within comments. 14182 However, the scan is simply a brute-force byte compare to ensure all 14183 characters in the file are in the range 0x00 to 0x7F. 14184 14185 Fixed a problem with the CondRefOf operator where the compiler was 14186 inappropriately checking for the existence of the target. Since the point 14187 of 14188 the operator is to check for the existence of the target at run-time, the 14189 compiler no longer checks for the target existence. 14190 14191 Fixed a problem where errors generated from the internal AML interpreter 14192 during constant folding were not handled properly, causing a fault. 14193 14194 Fixed a problem with overly aggressive range checking for the Stall 14195 operator. The valid range (max 255) is now only checked if the operand is 14196 of 14197 type Integer. All other operand types cannot be statically checked. 14198 14199 Fixed a problem where control method references within the RefOf, 14200 DeRefOf, 14201 and ObjectType operators were not treated properly. They are now treated 14202 as 14203 actual references, not method invocations. 14204 14205 Fixed and enhanced the "list namespace" option (-ln). This option was 14206 broken 14207 a number of releases ago. 14208 14209 Improved error handling for the Field, IndexField, and BankField 14210 operators. 14211 The compiler now cleanly reports and recovers from errors in the field 14212 component (FieldUnit) list. 14213 14214 Fixed a disassembler problem where the optional ResourceDescriptor fields 14215 TRS and TTP were not always handled correctly. 14216 14217 Disassembler - Comments in output now use "//" instead of "/*" 14218 14219 ---------------------------------------- 14220 28 February 2005. Summary of changes for version 20050228: 14221 14222 1) ACPI CA Core Subsystem: 14223 14224 Fixed a problem where the result of an Index() operator (an object 14225 reference) must increment the reference count on the target object for 14226 the 14227 life of the object reference. 14228 14229 Implemented AML Interpreter and Debugger support for the new ACPI 3.0 14230 Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and 14231 WordSpace 14232 resource descriptors. 14233 14234 Implemented support in the _OSI method for the ACPI 3.0 "Extended Address 14235 Space Descriptor" string, indicating interpreter support for the 14236 descriptors 14237 above. 14238 14239 Implemented header support for the new ACPI 3.0 FADT flag bits. 14240 14241 Implemented header support for the new ACPI 3.0 PCI Express bits for the 14242 PM1 14243 status/enable registers. 14244 14245 Updated header support for the MADT processor local Apic struct and MADT 14246 platform interrupt source struct for new ACPI 3.0 fields. 14247 14248 Implemented header support for the SRAT and SLIT ACPI tables. 14249 14250 Implemented the -s switch in AcpiExec to enable the "InterpreterSlack" 14251 flag 14252 at runtime. 14253 14254 Code and Data Size: Current and previous core subsystem library sizes are 14255 shown below. These are the code and data sizes for the acpica.lib 14256 produced 14257 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 14258 any ACPI driver or OSPM code. The debug version of the code includes the 14259 debug output trace mechanism and has a much larger code and data size. 14260 Note 14261 that these values will vary depending on the efficiency of the compiler 14262 and 14263 the compiler options used during generation. 14264 14265 Previous Release: 14266 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 14267 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 14268 Current Release: 14269 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 14270 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 14271 14272 14273 2) iASL Compiler/Disassembler: 14274 14275 Fixed a problem with the internal 64-bit String-to-integer conversion 14276 with 14277 strings less than two characters long. 14278 14279 Fixed a problem with constant folding where the result of the Index() 14280 operator can not be considered a constant. This means that Index() cannot 14281 be 14282 a type3 opcode and this will require an update to the ACPI specification. 14283 14284 Disassembler: Implemented support for the TTP, MTP, and TRS resource 14285 descriptor fields. These fields were inadvertently ignored and not output 14286 in 14287 the disassembly of the resource descriptor. 14288 14289 14290 ---------------------------------------- 14291 11 February 2005. Summary of changes for version 20050211: 14292 14293 1) ACPI CA Core Subsystem: 14294 14295 Implemented ACPI 3.0 support for implicit conversion within the Match() 14296 operator. MatchObjects can now be of type integer, buffer, or string 14297 instead 14298 of just type integer. Package elements are implicitly converted to the 14299 type 14300 of the MatchObject. This change aligns the behavior of Match() with the 14301 behavior of the other logical operators (LLess(), etc.) It also requires 14302 an 14303 errata change to the ACPI specification as this support was intended for 14304 ACPI 3.0, but was inadvertently omitted. 14305 14306 Fixed a problem with the internal implicit "to buffer" conversion. 14307 Strings 14308 that are converted to buffers will cause buffer truncation if the string 14309 is 14310 smaller than the target buffer. Integers that are converted to buffers 14311 will 14312 not cause buffer truncation, only zero extension (both as per the ACPI 14313 spec.) The problem was introduced when code was added to truncate the 14314 buffer, but this should not be performed in all cases, only the string 14315 case. 14316 14317 Fixed a problem with the Buffer and Package operators where the 14318 interpreter 14319 would get confused if two such operators were used as operands to an ASL 14320 operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result 14321 stack was not being popped after the execution of these operators, 14322 resulting 14323 in an AE_NO_RETURN_VALUE exception. 14324 14325 Fixed a problem with constructs of the form Store(Index(...),...). The 14326 reference object returned from Index was inadvertently resolved to an 14327 actual 14328 value. This problem was introduced in version 20050114 when the behavior 14329 of 14330 Store() was modified to restrict the object types that can be used as the 14331 source operand (to match the ACPI specification.) 14332 14333 Reduced excessive stack use within the AcpiGetObjectInfo procedure. 14334 14335 Added a fix to aclinux.h to allow generation of AcpiExec on Linux. 14336 14337 Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct. 14338 14339 Code and Data Size: Current and previous core subsystem library sizes are 14340 shown below. These are the code and data sizes for the acpica.lib 14341 produced 14342 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 14343 any ACPI driver or OSPM code. The debug version of the code includes the 14344 debug output trace mechanism and has a much larger code and data size. 14345 Note 14346 that these values will vary depending on the efficiency of the compiler 14347 and 14348 the compiler options used during generation. 14349 14350 Previous Release: 14351 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 14352 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 14353 Current Release: 14354 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 14355 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 14356 14357 14358 2) iASL Compiler/Disassembler: 14359 14360 Fixed a code generation problem in the constant folding optimization code 14361 where incorrect code was generated if a constant was reduced to a buffer 14362 object (i.e., a reduced type 5 opcode.) 14363 14364 Fixed a typechecking problem for the ToBuffer operator. Caused by an 14365 incorrect return type in the internal opcode information table. 14366 14367 ---------------------------------------- 14368 25 January 2005. Summary of changes for version 20050125: 14369 14370 1) ACPI CA Core Subsystem: 14371 14372 Fixed a recently introduced problem with the Global Lock where the 14373 underlying semaphore was not created. This problem was introduced in 14374 version 20050114, and caused an AE_AML_NO_OPERAND exception during an 14375 Acquire() operation on _GL. 14376 14377 The local object cache is now optional, and is disabled by default. Both 14378 AcpiExec and the iASL compiler enable the cache because they run in user 14379 mode and this enhances their performance. #define 14380 ACPI_ENABLE_OBJECT_CACHE 14381 to enable the local cache. 14382 14383 Fixed an issue in the internal function AcpiUtEvaluateObject concerning 14384 the 14385 optional "implicit return" support where an error was returned if no 14386 return 14387 object was expected, but one was implicitly returned. AE_OK is now 14388 returned 14389 in this case and the implicitly returned object is deleted. 14390 AcpiUtEvaluateObject is only occasionally used, and only to execute 14391 reserved 14392 methods such as _STA and _INI where the return type is known up front. 14393 14394 Fixed a few issues with the internal convert-to-integer code. It now 14395 returns 14396 an error if an attempt is made to convert a null string, a string of only 14397 blanks/tabs, or a zero-length buffer. This affects both implicit 14398 conversion 14399 and explicit conversion via the ToInteger() operator. 14400 14401 The internal debug code in AcpiUtAcquireMutex has been commented out. It 14402 is 14403 not needed for normal operation and should increase the performance of 14404 the 14405 entire subsystem. The code remains in case it is needed for debug 14406 purposes 14407 again. 14408 14409 The AcpiExec source and makefile are included in the Unix/Linux package 14410 for 14411 the first time. 14412 14413 Code and Data Size: Current and previous core subsystem library sizes are 14414 shown below. These are the code and data sizes for the acpica.lib 14415 produced 14416 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 14417 any ACPI driver or OSPM code. The debug version of the code includes the 14418 debug output trace mechanism and has a much larger code and data size. 14419 Note 14420 that these values will vary depending on the efficiency of the compiler 14421 and 14422 the compiler options used during generation. 14423 14424 Previous Release: 14425 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 14426 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 14427 Current Release: 14428 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 14429 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 14430 14431 2) iASL Compiler/Disassembler: 14432 14433 Switch/Case support: A warning is now issued if the type of the Switch 14434 value 14435 cannot be determined at compile time. For example, Switch(Arg0) will 14436 generate the warning, and the type is assumed to be an integer. As per 14437 the 14438 ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate 14439 the 14440 warning. 14441 14442 Switch/Case support: Implemented support for buffer and string objects as 14443 the switch value. This is an ACPI 3.0 feature, now that LEqual supports 14444 buffers and strings. 14445 14446 Switch/Case support: The emitted code for the LEqual() comparisons now 14447 uses 14448 the switch value as the first operand, not the second. The case value is 14449 now 14450 the second operand, and this allows the case value to be implicitly 14451 converted to the type of the switch value, not the other way around. 14452 14453 Switch/Case support: Temporary variables are now emitted immediately 14454 within 14455 the control method, not at the global level. This means that there are 14456 now 14457 36 temps available per-method, not 36 temps per-module as was the case 14458 with 14459 the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.) 14460 14461 ---------------------------------------- 14462 14 January 2005. Summary of changes for version 20050114: 14463 14464 Added 2005 copyright to all module headers. This affects every module in 14465 the core subsystem, iASL compiler, and the utilities. 14466 14467 1) ACPI CA Core Subsystem: 14468 14469 Fixed an issue with the String-to-Buffer conversion code where the string 14470 null terminator was not included in the buffer after conversion, but 14471 there 14472 is existing ASL that assumes the string null terminator is included. This 14473 is 14474 the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was 14475 introduced in the previous version when the code was updated to correctly 14476 set the converted buffer size as per the ACPI specification. The ACPI 14477 spec 14478 is ambiguous and will be updated to specify that the null terminator must 14479 be 14480 included in the converted buffer. This also affects the ToBuffer() ASL 14481 operator. 14482 14483 Fixed a problem with the Mid() ASL/AML operator where it did not work 14484 correctly on Buffer objects. Newly created sub-buffers were not being 14485 marked 14486 as initialized. 14487 14488 14489 Fixed a problem in AcpiTbFindTable where incorrect string compares were 14490 performed on the OemId and OemTableId table header fields. These fields 14491 are 14492 not null terminated, so strncmp is now used instead of strcmp. 14493 14494 Implemented a restriction on the Store() ASL/AML operator to align the 14495 behavior with the ACPI specification. Previously, any object could be 14496 used 14497 as the source operand. Now, the only objects that may be used are 14498 Integers, 14499 Buffers, Strings, Packages, Object References, and DDB Handles. If 14500 necessary, the original behavior can be restored by enabling the 14501 EnableInterpreterSlack flag. 14502 14503 Enhanced the optional "implicit return" support to allow an implicit 14504 return 14505 value from methods that are invoked externally via the AcpiEvaluateObject 14506 interface. This enables implicit returns from the _STA and _INI methods, 14507 for example. 14508 14509 Changed the Revision() ASL/AML operator to return the current version of 14510 the 14511 AML interpreter, in the YYYYMMDD format. Previously, it incorrectly 14512 returned 14513 the supported ACPI version (This is the function of the _REV method). 14514 14515 Updated the _REV predefined method to return the currently supported 14516 version 14517 of ACPI, now 3. 14518 14519 Implemented batch mode option for the AcpiExec utility (-b). 14520 14521 Code and Data Size: Current and previous core subsystem library sizes are 14522 shown below. These are the code and data sizes for the acpica.lib 14523 produced 14524 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 14525 any ACPI driver or OSPM code. The debug version of the code includes the 14526 debug output trace mechanism and has a much larger code and data size. 14527 Note 14528 that these values will vary depending on the efficiency of the compiler 14529 and 14530 the compiler options used during generation. 14531 14532 Previous Release: 14533 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 14534 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 14535 Current Release: 14536 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 14537 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 14538 14539 ---------------------------------------- 14540 10 December 2004. Summary of changes for version 20041210: 14541 14542 ACPI 3.0 support is nearing completion in both the iASL compiler and the 14543 ACPI CA core subsystem. 14544 14545 1) ACPI CA Core Subsystem: 14546 14547 Fixed a problem in the ToDecimalString operator where the resulting 14548 string 14549 length was incorrectly calculated. The length is now calculated exactly, 14550 eliminating incorrect AE_STRING_LIMIT exceptions. 14551 14552 Fixed a problem in the ToHexString operator to allow a maximum 200 14553 character 14554 string to be produced. 14555 14556 Fixed a problem in the internal string-to-buffer and buffer-to-buffer 14557 copy 14558 routine where the length of the resulting buffer was not truncated to the 14559 new size (if the target buffer already existed). 14560 14561 Code and Data Size: Current and previous core subsystem library sizes are 14562 shown below. These are the code and data sizes for the acpica.lib 14563 produced 14564 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 14565 any ACPI driver or OSPM code. The debug version of the code includes the 14566 debug output trace mechanism and has a much larger code and data size. 14567 Note 14568 that these values will vary depending on the efficiency of the compiler 14569 and 14570 the compiler options used during generation. 14571 14572 Previous Release: 14573 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 14574 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 14575 Current Release: 14576 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 14577 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 14578 14579 14580 2) iASL Compiler/Disassembler: 14581 14582 Implemented the new ACPI 3.0 resource template macros - DWordSpace, 14583 ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace. 14584 Includes support in the disassembler. 14585 14586 Implemented support for the new (ACPI 3.0) parameter to the Register 14587 macro, 14588 AccessSize. 14589 14590 Fixed a problem where the _HE resource name for the Interrupt macro was 14591 referencing bit 0 instead of bit 1. 14592 14593 Implemented check for maximum 255 interrupts in the Interrupt macro. 14594 14595 Fixed a problem with the predefined resource descriptor names where 14596 incorrect AML code was generated if the offset within the resource buffer 14597 was 0 or 1. The optimizer shortened the AML code to a single byte opcode 14598 but did not update the surrounding package lengths. 14599 14600 Changes to the Dma macro: All channels within the channel list must be 14601 in 14602 the range 0-7. Maximum 8 channels can be specified. BusMaster operand is 14603 optional (default is BusMaster). 14604 14605 Implemented check for maximum 7 data bytes for the VendorShort macro. 14606 14607 The ReadWrite parameter is now optional for the Memory32 and similar 14608 macros. 14609 14610 ---------------------------------------- 14611 03 December 2004. Summary of changes for version 20041203: 14612 14613 1) ACPI CA Core Subsystem: 14614 14615 The low-level field insertion/extraction code (exfldio) has been 14616 completely 14617 rewritten to eliminate unnecessary complexity, bugs, and boundary 14618 conditions. 14619 14620 Fixed a problem in the ToInteger, ToBuffer, ToHexString, and 14621 ToDecimalString 14622 operators where the input operand could be inadvertently deleted if no 14623 conversion was necessary (e.g., if the input to ToInteger was an Integer 14624 object.) 14625 14626 Fixed a problem with the ToDecimalString and ToHexString where an 14627 incorrect 14628 exception code was returned if the resulting string would be > 200 chars. 14629 AE_STRING_LIMIT is now returned. 14630 14631 Fixed a problem with the Concatenate operator where AE_OK was always 14632 returned, even if the operation failed. 14633 14634 Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128 14635 semaphores to be allocated. 14636 14637 Code and Data Size: Current and previous core subsystem library sizes are 14638 shown below. These are the code and data sizes for the acpica.lib 14639 produced 14640 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 14641 any ACPI driver or OSPM code. The debug version of the code includes the 14642 debug output trace mechanism and has a much larger code and data size. 14643 Note 14644 that these values will vary depending on the efficiency of the compiler 14645 and 14646 the compiler options used during generation. 14647 14648 Previous Release: 14649 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 14650 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 14651 Current Release: 14652 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 14653 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 14654 14655 14656 2) iASL Compiler/Disassembler: 14657 14658 Fixed typechecking for the ObjectType and SizeOf operators. Problem was 14659 recently introduced in 20041119. 14660 14661 Fixed a problem with the ToUUID macro where the upper nybble of each 14662 buffer 14663 byte was inadvertently set to zero. 14664 14665 ---------------------------------------- 14666 19 November 2004. Summary of changes for version 20041119: 14667 14668 1) ACPI CA Core Subsystem: 14669 14670 Fixed a problem in the internal ConvertToInteger routine where new 14671 integers 14672 were not truncated to 32 bits for 32-bit ACPI tables. This routine 14673 converts 14674 buffers and strings to integers. 14675 14676 Implemented support to store a value to an Index() on a String object. 14677 This 14678 is an ACPI 2.0 feature that had not yet been implemented. 14679 14680 Implemented new behavior for storing objects to individual package 14681 elements 14682 (via the Index() operator). The previous behavior was to invoke the 14683 implicit 14684 conversion rules if an object was already present at the index. The new 14685 behavior is to simply delete any existing object and directly store the 14686 new 14687 object. Although the ACPI specification seems unclear on this subject, 14688 other 14689 ACPI implementations behave in this manner. (This is the root of the 14690 AE_BAD_HEX_CONSTANT issue.) 14691 14692 Modified the RSDP memory scan mechanism to support the extended checksum 14693 for 14694 ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid 14695 RSDP signature is found with a valid checksum. 14696 14697 Code and Data Size: Current and previous core subsystem library sizes are 14698 shown below. These are the code and data sizes for the acpica.lib 14699 produced 14700 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 14701 any ACPI driver or OSPM code. The debug version of the code includes the 14702 debug output trace mechanism and has a much larger code and data size. 14703 Note 14704 that these values will vary depending on the efficiency of the compiler 14705 and 14706 the compiler options used during generation. 14707 14708 Previous Release: 14709 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 14710 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 14711 Current Release: 14712 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 14713 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 14714 14715 14716 2) iASL Compiler/Disassembler: 14717 14718 Fixed a missing semicolon in the aslcompiler.y file. 14719 14720 ---------------------------------------- 14721 05 November 2004. Summary of changes for version 20041105: 14722 14723 1) ACPI CA Core Subsystem: 14724 14725 Implemented support for FADT revision 2. This was an interim table 14726 (between 14727 ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register. 14728 14729 Implemented optional support to allow uninitialized LocalX and ArgX 14730 variables in a control method. The variables are initialized to an 14731 Integer 14732 object with a value of zero. This support is enabled by setting the 14733 AcpiGbl_EnableInterpreterSlack flag to TRUE. 14734 14735 Implemented support for Integer objects for the SizeOf operator. Either 14736 4 14737 or 8 is returned, depending on the current integer size (32-bit or 64- 14738 bit, 14739 depending on the parent table revision). 14740 14741 Fixed a problem in the implementation of the SizeOf and ObjectType 14742 operators 14743 where the operand was resolved to a value too early, causing incorrect 14744 return values for some objects. 14745 14746 Fixed some possible memory leaks during exceptional conditions. 14747 14748 Code and Data Size: Current and previous core subsystem library sizes are 14749 shown below. These are the code and data sizes for the acpica.lib 14750 produced 14751 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 14752 any ACPI driver or OSPM code. The debug version of the code includes the 14753 debug output trace mechanism and has a much larger code and data size. 14754 Note 14755 that these values will vary depending on the efficiency of the compiler 14756 and 14757 the compiler options used during generation. 14758 14759 Previous Release: 14760 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 14761 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 14762 Current Release: 14763 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 14764 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 14765 14766 14767 2) iASL Compiler/Disassembler: 14768 14769 Implemented support for all ACPI 3.0 reserved names and methods. 14770 14771 Implemented all ACPI 3.0 grammar elements in the front-end, including 14772 support for semicolons. 14773 14774 Implemented the ACPI 3.0 Function() and ToUUID() macros 14775 14776 Fixed a problem in the disassembler where a Scope() operator would not be 14777 emitted properly if the target of the scope was in another table. 14778 14779 ---------------------------------------- 14780 15 October 2004. Summary of changes for version 20041015: 14781 14782 Note: ACPI CA is currently undergoing an in-depth and complete formal 14783 evaluation to test/verify the following areas. Other suggestions are 14784 welcome. This will result in an increase in the frequency of releases and 14785 the number of bug fixes in the next few months. 14786 - Functional tests for all ASL/AML operators 14787 - All implicit/explicit type conversions 14788 - Bit fields and operation regions 14789 - 64-bit math support and 32-bit-only "truncated" math support 14790 - Exceptional conditions, both compiler and interpreter 14791 - Dynamic object deletion and memory leaks 14792 - ACPI 3.0 support when implemented 14793 - External interfaces to the ACPI subsystem 14794 14795 14796 1) ACPI CA Core Subsystem: 14797 14798 Fixed two alignment issues on 64-bit platforms - within debug statements 14799 in 14800 AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the 14801 Address 14802 field within the non-aligned ACPI generic address structure. 14803 14804 Fixed a problem in the Increment and Decrement operators where incorrect 14805 operand resolution could result in the inadvertent modification of the 14806 original integer when the integer is passed into another method as an 14807 argument and the arg is then incremented/decremented. 14808 14809 Fixed a problem in the FromBCD operator where the upper 32-bits of a 64- 14810 bit 14811 BCD number were truncated during conversion. 14812 14813 Fixed a problem in the ToDecimal operator where the length of the 14814 resulting 14815 string could be set incorrectly too long if the input operand was a 14816 Buffer 14817 object. 14818 14819 Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte 14820 (0) 14821 within a buffer would prematurely terminate a compare between buffer 14822 objects. 14823 14824 Added a check for string overflow (>200 characters as per the ACPI 14825 specification) during the Concatenate operator with two string operands. 14826 14827 Code and Data Size: Current and previous core subsystem library sizes are 14828 shown below. These are the code and data sizes for the acpica.lib 14829 produced 14830 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 14831 any ACPI driver or OSPM code. The debug version of the code includes the 14832 debug output trace mechanism and has a much larger code and data size. 14833 Note 14834 that these values will vary depending on the efficiency of the compiler 14835 and 14836 the compiler options used during generation. 14837 14838 Previous Release: 14839 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 14840 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 14841 Current Release: 14842 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 14843 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 14844 14845 14846 14847 2) iASL Compiler/Disassembler: 14848 14849 Allow the use of the ObjectType operator on uninitialized Locals and Args 14850 (returns 0 as per the ACPI specification). 14851 14852 Fixed a problem where the compiler would fault if there was a syntax 14853 error 14854 in the FieldName of all of the various CreateXXXField operators. 14855 14856 Disallow the use of lower case letters within the EISAID macro, as per 14857 the 14858 ACPI specification. All EISAID strings must be of the form "UUUNNNN" 14859 Where 14860 U is an uppercase letter and N is a hex digit. 14861 14862 14863 ---------------------------------------- 14864 06 October 2004. Summary of changes for version 20041006: 14865 14866 1) ACPI CA Core Subsystem: 14867 14868 Implemented support for the ACPI 3.0 Timer operator. This ASL function 14869 implements a 64-bit timer with 100 nanosecond granularity. 14870 14871 Defined a new OSL interface, AcpiOsGetTimer. This interface is used to 14872 implement the ACPI 3.0 Timer operator. This allows the host OS to 14873 implement 14874 the timer with the best clock available. Also, it keeps the core 14875 subsystem 14876 out of the clock handling business, since the host OS (usually) performs 14877 this function. 14878 14879 Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write) 14880 functions use a 64-bit address which is part of the packed ACPI Generic 14881 Address Structure. Since the structure is non-aligned, the alignment 14882 macros 14883 are now used to extract the address to a local variable before use. 14884 14885 Fixed a problem where the ToInteger operator assumed all input strings 14886 were 14887 hexadecimal. The operator now handles both decimal strings and hex 14888 strings 14889 (prefixed with "0x"). 14890 14891 Fixed a problem where the string length in the string object created as a 14892 result of the internal ConvertToString procedure could be incorrect. This 14893 potentially affected all implicit conversions and also the 14894 ToDecimalString 14895 and ToHexString operators. 14896 14897 Fixed two problems in the ToString operator. If the length parameter was 14898 zero, an incorrect string object was created and the value of the input 14899 length parameter was inadvertently changed from zero to Ones. 14900 14901 Fixed a problem where the optional ResourceSource string in the 14902 ExtendedIRQ 14903 resource macro was ignored. 14904 14905 Simplified the interfaces to the internal division functions, reducing 14906 code 14907 size and complexity. 14908 14909 Code and Data Size: Current and previous core subsystem library sizes are 14910 shown below. These are the code and data sizes for the acpica.lib 14911 produced 14912 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 14913 any ACPI driver or OSPM code. The debug version of the code includes the 14914 debug output trace mechanism and has a much larger code and data size. 14915 Note 14916 that these values will vary depending on the efficiency of the compiler 14917 and 14918 the compiler options used during generation. 14919 14920 Previous Release: 14921 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 14922 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 14923 Current Release: 14924 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 14925 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 14926 14927 14928 2) iASL Compiler/Disassembler: 14929 14930 Implemented support for the ACPI 3.0 Timer operator. 14931 14932 Fixed a problem where the Default() operator was inadvertently ignored in 14933 a 14934 Switch/Case block. This was a problem in the translation of the Switch 14935 statement to If...Else pairs. 14936 14937 Added support to allow a standalone Return operator, with no parentheses 14938 (or 14939 operands). 14940 14941 Fixed a problem with code generation for the ElseIf operator where the 14942 translated Else...If parse tree was improperly constructed leading to the 14943 loss of some code. 14944 14945 ---------------------------------------- 14946 22 September 2004. Summary of changes for version 20040922: 14947 14948 1) ACPI CA Core Subsystem: 14949 14950 Fixed a problem with the implementation of the LNot() operator where 14951 "Ones" 14952 was not returned for the TRUE case. Changed the code to return Ones 14953 instead 14954 of (!Arg) which was usually 1. This change affects iASL constant folding 14955 for 14956 this operator also. 14957 14958 Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was 14959 not 14960 initialized properly -- Now zero the entire buffer in this case where the 14961 buffer already exists. 14962 14963 Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32 14964 Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all 14965 related code considerably. This will require changes/updates to all OS 14966 interface layers (OSLs.) 14967 14968 Implemented a new external interface, AcpiInstallExceptionHandler, to 14969 allow 14970 a system exception handler to be installed. This handler is invoked upon 14971 any 14972 run-time exception that occurs during control method execution. 14973 14974 Added support for the DSDT in AcpiTbFindTable. This allows the 14975 DataTableRegion() operator to access the local copy of the DSDT. 14976 14977 Code and Data Size: Current and previous core subsystem library sizes are 14978 shown below. These are the code and data sizes for the acpica.lib 14979 produced 14980 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 14981 any ACPI driver or OSPM code. The debug version of the code includes the 14982 debug output trace mechanism and has a much larger code and data size. 14983 Note 14984 that these values will vary depending on the efficiency of the compiler 14985 and 14986 the compiler options used during generation. 14987 14988 Previous Release: 14989 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 14990 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 14991 Current Release: 14992 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 14993 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 14994 14995 14996 2) iASL Compiler/Disassembler: 14997 14998 Fixed a problem with constant folding and the LNot operator. LNot was 14999 returning 1 in the TRUE case, not Ones as per the ACPI specification. 15000 This 15001 could result in the generation of an incorrect folded/reduced constant. 15002 15003 End-Of-File is now allowed within a "//"-style comment. A parse error no 15004 longer occurs if such a comment is at the very end of the input ASL 15005 source 15006 file. 15007 15008 Implemented the "-r" option to override the Revision in the table header. 15009 The initial use of this option will be to simplify the evaluation of the 15010 AML 15011 interpreter by allowing a single ASL source module to be compiled for 15012 either 15013 32-bit or 64-bit integers. 15014 15015 15016 ---------------------------------------- 15017 27 August 2004. Summary of changes for version 20040827: 15018 15019 1) ACPI CA Core Subsystem: 15020 15021 - Implemented support for implicit object conversion in the non-numeric 15022 logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual, 15023 and 15024 LNotEqual.) Any combination of Integers/Strings/Buffers may now be used; 15025 the second operand is implicitly converted on the fly to match the type 15026 of 15027 the first operand. For example: 15028 15029 LEqual (Source1, Source2) 15030 15031 Source1 and Source2 must each evaluate to an integer, a string, or a 15032 buffer. 15033 The data type of Source1 dictates the required type of Source2. Source2 15034 is 15035 implicitly converted if necessary to match the type of Source1. 15036 15037 - Updated and corrected the behavior of the string conversion support. 15038 The 15039 rules concerning conversion of buffers to strings (according to the ACPI 15040 specification) are as follows: 15041 15042 ToDecimalString - explicit byte-wise conversion of buffer to string of 15043 decimal values (0-255) separated by commas. ToHexString - explicit byte- 15044 wise 15045 conversion of buffer to string of hex values (0-FF) separated by commas. 15046 ToString - explicit byte-wise conversion of buffer to string. Byte-by- 15047 byte 15048 copy with no transform except NULL terminated. Any other implicit buffer- 15049 to- 15050 string conversion - byte-wise conversion of buffer to string of hex 15051 values 15052 (0-FF) separated by spaces. 15053 15054 - Fixed typo in definition of AcpiGbl_EnableInterpreterSlack. 15055 15056 - Fixed a problem in AcpiNsGetPathnameLength where the returned length 15057 was 15058 one byte too short in the case of a node in the root scope. This could 15059 cause a fault during debug output. 15060 15061 - Code and Data Size: Current and previous core subsystem library sizes 15062 are 15063 shown below. These are the code and data sizes for the acpica.lib 15064 produced 15065 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 15066 any ACPI driver or OSPM code. The debug version of the code includes the 15067 debug output trace mechanism and has a much larger code and data size. 15068 Note 15069 that these values will vary depending on the efficiency of the compiler 15070 and 15071 the compiler options used during generation. 15072 15073 Previous Release: 15074 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 15075 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 15076 Current Release: 15077 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 15078 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 15079 15080 15081 2) iASL Compiler/Disassembler: 15082 15083 - Fixed a Linux generation error. 15084 15085 15086 ---------------------------------------- 15087 16 August 2004. Summary of changes for version 20040816: 15088 15089 1) ACPI CA Core Subsystem: 15090 15091 Designed and implemented support within the AML interpreter for the so- 15092 called "implicit return". This support returns the result of the last 15093 ASL 15094 operation within a control method, in the absence of an explicit Return() 15095 operator. A few machines depend on this behavior, even though it is not 15096 explicitly supported by the ASL language. It is optional support that 15097 can 15098 be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag. 15099 15100 Removed support for the PCI_Config address space from the internal low 15101 level 15102 hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This 15103 support was not used internally, and would not work correctly anyway 15104 because 15105 the PCI bus number and segment number were not supported. There are 15106 separate interfaces for PCI configuration space access because of the 15107 unique 15108 interface. 15109 15110 Code and Data Size: Current and previous core subsystem library sizes are 15111 shown below. These are the code and data sizes for the acpica.lib 15112 produced 15113 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 15114 any ACPI driver or OSPM code. The debug version of the code includes the 15115 debug output trace mechanism and has a much larger code and data size. 15116 Note 15117 that these values will vary depending on the efficiency of the compiler 15118 and 15119 the compiler options used during generation. 15120 15121 Previous Release: 15122 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 15123 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 15124 Current Release: 15125 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 15126 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 15127 15128 15129 2) iASL Compiler/Disassembler: 15130 15131 Fixed a problem where constants in ASL expressions at the root level (not 15132 within a control method) could be inadvertently truncated during code 15133 generation. This problem was introduced in the 20040715 release. 15134 15135 15136 ---------------------------------------- 15137 15 July 2004. Summary of changes for version 20040715: 15138 15139 1) ACPI CA Core Subsystem: 15140 15141 Restructured the internal HW GPE interfaces to pass/track the current 15142 state 15143 of interrupts (enabled/disabled) in order to avoid possible deadlock and 15144 increase flexibility of the interfaces. 15145 15146 Implemented a "lexicographical compare" for String and Buffer objects 15147 within 15148 the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual - 15149 - 15150 as per further clarification to the ACPI specification. Behavior is 15151 similar 15152 to C library "strcmp". 15153 15154 Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable 15155 external function. In the 32-bit non-debug case, the stack use has been 15156 reduced from 168 bytes to 32 bytes. 15157 15158 Deployed a new run-time configuration flag, 15159 AcpiGbl_EnableInterpreterSlack, 15160 whose purpose is to allow the AML interpreter to forgive certain bad AML 15161 constructs. Default setting is FALSE. 15162 15163 Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field 15164 IO 15165 support code. If enabled, it allows field access to go beyond the end of 15166 a 15167 region definition if the field is within the region length rounded up to 15168 the 15169 next access width boundary (a common coding error.) 15170 15171 Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to 15172 ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also, 15173 these 15174 symbols are lowercase by the latest version of the AcpiSrc tool. 15175 15176 The prototypes for the PCI interfaces in acpiosxf.h have been updated to 15177 rename "Register" to simply "Reg" to prevent certain compilers from 15178 complaining. 15179 15180 Code and Data Size: Current and previous core subsystem library sizes are 15181 shown below. These are the code and data sizes for the acpica.lib 15182 produced 15183 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 15184 any ACPI driver or OSPM code. The debug version of the code includes the 15185 debug output trace mechanism and has a much larger code and data size. 15186 Note 15187 that these values will vary depending on the efficiency of the compiler 15188 and 15189 the compiler options used during generation. 15190 15191 Previous Release: 15192 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 15193 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 15194 Current Release: 15195 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 15196 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 15197 15198 15199 2) iASL Compiler/Disassembler: 15200 15201 Implemented full support for Package objects within the Case() operator. 15202 Note: The Break() operator is currently not supported within Case blocks 15203 (TermLists) as there is some question about backward compatibility with 15204 ACPI 15205 1.0 interpreters. 15206 15207 15208 Fixed a problem where complex terms were not supported properly within 15209 the 15210 Switch() operator. 15211 15212 Eliminated extraneous warning for compiler-emitted reserved names of the 15213 form "_T_x". (Used in Switch/Case operators.) 15214 15215 Eliminated optimization messages for "_T_x" objects and small constants 15216 within the DefinitionBlock operator. 15217 15218 15219 ---------------------------------------- 15220 15 June 2004. Summary of changes for version 20040615: 15221 15222 1) ACPI CA Core Subsystem: 15223 15224 Implemented support for Buffer and String objects (as per ACPI 2.0) for 15225 the 15226 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 15227 LLessEqual. 15228 15229 All directory names in the entire source package are lower case, as they 15230 were in earlier releases. 15231 15232 Implemented "Disassemble" command in the AML debugger that will 15233 disassemble 15234 a single control method. 15235 15236 Code and Data Size: Current and previous core subsystem library sizes are 15237 shown below. These are the code and data sizes for the acpica.lib 15238 produced 15239 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 15240 any ACPI driver or OSPM code. The debug version of the code includes the 15241 debug output trace mechanism and has a much larger code and data size. 15242 Note 15243 that these values will vary depending on the efficiency of the compiler 15244 and 15245 the compiler options used during generation. 15246 15247 Previous Release: 15248 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 15249 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 15250 15251 Current Release: 15252 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 15253 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 15254 15255 15256 2) iASL Compiler/Disassembler: 15257 15258 Implemented support for Buffer and String objects (as per ACPI 2.0) for 15259 the 15260 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 15261 LLessEqual. 15262 15263 All directory names in the entire source package are lower case, as they 15264 were in earlier releases. 15265 15266 Fixed a fault when using the -g or -d<nofilename> options if the FADT was 15267 not found. 15268 15269 Fixed an issue with the Windows version of the compiler where later 15270 versions 15271 of Windows place the FADT in the registry under the name "FADT" and not 15272 "FACP" as earlier versions did. This applies when using the -g or - 15273 d<nofilename> options. The compiler now looks for both strings as 15274 necessary. 15275 15276 Fixed a problem with compiler namepath optimization where a namepath 15277 within 15278 the Scope() operator could not be optimized if the namepath was a subpath 15279 of 15280 the current scope path. 15281 15282 ---------------------------------------- 15283 27 May 2004. Summary of changes for version 20040527: 15284 15285 1) ACPI CA Core Subsystem: 15286 15287 Completed a new design and implementation for EBDA (Extended BIOS Data 15288 Area) 15289 support in the RSDP scan code. The original code improperly scanned for 15290 the 15291 EBDA by simply scanning from memory location 0 to 0x400. The correct 15292 method 15293 is to first obtain the EBDA pointer from within the BIOS data area, then 15294 scan 1K of memory starting at the EBDA pointer. There appear to be few 15295 if 15296 any machines that place the RSDP in the EBDA, however. 15297 15298 Integrated a fix for a possible fault during evaluation of BufferField 15299 arguments. Obsolete code that was causing the problem was removed. 15300 15301 Found and fixed a problem in the Field Support Code where data could be 15302 corrupted on a bit field read that starts on an aligned boundary but does 15303 not end on an aligned boundary. Merged the read/write "datum length" 15304 calculation code into a common procedure. 15305 15306 Rolled in a couple of changes to the FreeBSD-specific header. 15307 15308 15309 Code and Data Size: Current and previous core subsystem library sizes are 15310 shown below. These are the code and data sizes for the acpica.lib 15311 produced 15312 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 15313 any ACPI driver or OSPM code. The debug version of the code includes the 15314 debug output trace mechanism and has a much larger code and data size. 15315 Note 15316 that these values will vary depending on the efficiency of the compiler 15317 and 15318 the compiler options used during generation. 15319 15320 Previous Release: 15321 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 15322 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 15323 Current Release: 15324 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 15325 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 15326 15327 15328 2) iASL Compiler/Disassembler: 15329 15330 Fixed a generation warning produced by some overly-verbose compilers for 15331 a 15332 64-bit constant. 15333 15334 ---------------------------------------- 15335 14 May 2004. Summary of changes for version 20040514: 15336 15337 1) ACPI CA Core Subsystem: 15338 15339 Fixed a problem where hardware GPE enable bits sometimes not set properly 15340 during and after GPE method execution. Result of 04/27 changes. 15341 15342 Removed extra "clear all GPEs" when sleeping/waking. 15343 15344 Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single 15345 AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above 15346 to 15347 the new AcpiEv* calls as appropriate. 15348 15349 ACPI_OS_NAME was removed from the OS-specific headers. The default name 15350 is 15351 now "Microsoft Windows NT" for maximum compatibility. However this can 15352 be 15353 changed by modifying the acconfig.h file. 15354 15355 Allow a single invocation of AcpiInstallNotifyHandler for a handler that 15356 traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag. 15357 15358 Run _INI methods on ThermalZone objects. This is against the ACPI 15359 specification, but there is apparently ASL code in the field that has 15360 these 15361 _INI methods, and apparently "other" AML interpreters execute them. 15362 15363 Performed a full 16/32/64 bit lint that resulted in some small changes. 15364 15365 Added a sleep simulation command to the AML debugger to test sleep code. 15366 15367 Code and Data Size: Current and previous core subsystem library sizes are 15368 shown below. These are the code and data sizes for the acpica.lib 15369 produced 15370 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 15371 any ACPI driver or OSPM code. The debug version of the code includes the 15372 debug output trace mechanism and has a much larger code and data size. 15373 Note 15374 that these values will vary depending on the efficiency of the compiler 15375 and 15376 the compiler options used during generation. 15377 15378 Previous Release: 15379 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 15380 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 15381 Current Release: 15382 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 15383 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 15384 15385 ---------------------------------------- 15386 27 April 2004. Summary of changes for version 20040427: 15387 15388 1) ACPI CA Core Subsystem: 15389 15390 Completed a major overhaul of the GPE handling within ACPI CA. There are 15391 now three types of GPEs: wake-only, runtime-only, and combination 15392 wake/run. 15393 The only GPEs allowed to be combination wake/run are for button-style 15394 devices such as a control-method power button, control-method sleep 15395 button, 15396 or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are 15397 not 15398 referenced by any _PRW methods are marked for "runtime" and hardware 15399 enabled. Any GPE that is referenced by a _PRW method is marked for 15400 "wake" 15401 (and disabled at runtime). However, at sleep time, only those GPEs that 15402 have been specifically enabled for wake via the AcpiEnableGpe interface 15403 will 15404 actually be hardware enabled. 15405 15406 A new external interface has been added, AcpiSetGpeType(), that is meant 15407 to 15408 be used by device drivers to force a GPE to a particular type. It will 15409 be 15410 especially useful for the drivers for the button devices mentioned above. 15411 15412 Completed restructuring of the ACPI CA initialization sequence so that 15413 default operation region handlers are installed before GPEs are 15414 initialized 15415 and the _PRW methods are executed. This will prevent errors when the 15416 _PRW 15417 methods attempt to access system memory or I/O space. 15418 15419 GPE enable/disable no longer reads the GPE enable register. We now keep 15420 the 15421 enable info for runtime and wake separate and in the GPE_EVENT_INFO. We 15422 thus no longer depend on the hardware to maintain these bits. 15423 15424 Always clear the wake status and fixed/GPE status bits before sleep, even 15425 for state S5. 15426 15427 Improved the AML debugger output for displaying the GPE blocks and their 15428 current status. 15429 15430 Added new strings for the _OSI method, of the form "Windows 2001 SPx" 15431 where 15432 x = 0,1,2,3,4. 15433 15434 Fixed a problem where the physical address was incorrectly calculated 15435 when 15436 the Load() operator was used to directly load from an Operation Region 15437 (vs. 15438 loading from a Field object.) Also added check for minimum table length 15439 for 15440 this case. 15441 15442 Fix for multiple mutex acquisition. Restore original thread SyncLevel on 15443 mutex release. 15444 15445 Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for 15446 consistency with the other fields returned. 15447 15448 Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such 15449 structure for each GPE in the system, so the size of this structure is 15450 important. 15451 15452 CPU stack requirement reduction: Cleaned up the method execution and 15453 object 15454 evaluation paths so that now a parameter structure is passed, instead of 15455 copying the various method parameters over and over again. 15456 15457 In evregion.c: Correctly exit and reenter the interpreter region if and 15458 only if dispatching an operation region request to a user-installed 15459 handler. 15460 Do not exit/reenter when dispatching to a default handler (e.g., default 15461 system memory or I/O handlers) 15462 15463 15464 Notes for updating drivers for the new GPE support. The following 15465 changes 15466 must be made to ACPI-related device drivers that are attached to one or 15467 more 15468 GPEs: (This information will be added to the ACPI CA Programmer 15469 Reference.) 15470 15471 1) AcpiInstallGpeHandler no longer automatically enables the GPE, you 15472 must 15473 explicitly call AcpiEnableGpe. 15474 2) There is a new interface called AcpiSetGpeType. This should be called 15475 before enabling the GPE. Also, this interface will automatically disable 15476 the GPE if it is currently enabled. 15477 3) AcpiEnableGpe no longer supports a GPE type flag. 15478 15479 Specific drivers that must be changed: 15480 1) EC driver: 15481 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED, 15482 AeGpeHandler, NULL); 15483 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME); 15484 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR); 15485 15486 2) Button Drivers (Power, Lid, Sleep): 15487 Run _PRW method under parent device 15488 If _PRW exists: /* This is a control-method button */ 15489 Extract GPE number and possibly GpeDevice 15490 AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN); 15491 AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR); 15492 15493 For all other devices that have _PRWs, we automatically set the GPE type 15494 to 15495 ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled. 15496 This 15497 must be done on a selective basis, usually requiring some kind of user 15498 app 15499 to allow the user to pick the wake devices. 15500 15501 15502 Code and Data Size: Current and previous core subsystem library sizes are 15503 shown below. These are the code and data sizes for the acpica.lib 15504 produced 15505 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 15506 any ACPI driver or OSPM code. The debug version of the code includes the 15507 debug output trace mechanism and has a much larger code and data size. 15508 Note 15509 that these values will vary depending on the efficiency of the compiler 15510 and 15511 the compiler options used during generation. 15512 15513 Previous Release: 15514 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 15515 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 15516 Current Release: 15517 15518 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 15519 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 15520 15521 15522 15523 ---------------------------------------- 15524 02 April 2004. Summary of changes for version 20040402: 15525 15526 1) ACPI CA Core Subsystem: 15527 15528 Fixed an interpreter problem where an indirect store through an ArgX 15529 parameter was incorrectly applying the "implicit conversion rules" during 15530 the store. From the ACPI specification: "If the target is a method local 15531 or 15532 argument (LocalX or ArgX), no conversion is performed and the result is 15533 stored directly to the target". The new behavior is to disable implicit 15534 conversion during ALL stores to an ArgX. 15535 15536 Changed the behavior of the _PRW method scan to ignore any and all errors 15537 returned by a given _PRW. This prevents the scan from aborting from the 15538 failure of any single _PRW. 15539 15540 Moved the runtime configuration parameters from the global init procedure 15541 to 15542 static variables in acglobal.h. This will allow the host to override the 15543 default values easily. 15544 15545 Code and Data Size: Current and previous core subsystem library sizes are 15546 shown below. These are the code and data sizes for the acpica.lib 15547 produced 15548 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 15549 any ACPI driver or OSPM code. The debug version of the code includes the 15550 debug output trace mechanism and has a much larger code and data size. 15551 Note 15552 that these values will vary depending on the efficiency of the compiler 15553 and 15554 the compiler options used during generation. 15555 15556 Previous Release: 15557 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 15558 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 15559 Current Release: 15560 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 15561 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 15562 15563 15564 2) iASL Compiler/Disassembler: 15565 15566 iASL now fully disassembles SSDTs. However, External() statements are 15567 not 15568 generated automatically for unresolved symbols at this time. This is a 15569 planned feature for future implementation. 15570 15571 Fixed a scoping problem in the disassembler that occurs when the type of 15572 the 15573 target of a Scope() operator is overridden. This problem caused an 15574 incorrectly nested internal namespace to be constructed. 15575 15576 Any warnings or errors that are emitted during disassembly are now 15577 commented 15578 out automatically so that the resulting file can be recompiled without 15579 any 15580 hand editing. 15581 15582 ---------------------------------------- 15583 26 March 2004. Summary of changes for version 20040326: 15584 15585 1) ACPI CA Core Subsystem: 15586 15587 Implemented support for "wake" GPEs via interaction between GPEs and the 15588 _PRW methods. Every GPE that is pointed to by one or more _PRWs is 15589 identified as a WAKE GPE and by default will no longer be enabled at 15590 runtime. Previously, we were blindly enabling all GPEs with a 15591 corresponding 15592 _Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway. 15593 We 15594 believe this has been the cause of thousands of "spurious" GPEs on some 15595 systems. 15596 15597 This new GPE behavior is can be reverted to the original behavior (enable 15598 ALL GPEs at runtime) via a runtime flag. 15599 15600 Fixed a problem where aliased control methods could not access objects 15601 properly. The proper scope within the namespace was not initialized 15602 (transferred to the target of the aliased method) before executing the 15603 target method. 15604 15605 Fixed a potential race condition on internal object deletion on the 15606 return 15607 object in AcpiEvaluateObject. 15608 15609 Integrated a fix for resource descriptors where both _MEM and _MTP were 15610 being extracted instead of just _MEM. (i.e. bitmask was incorrectly too 15611 wide, 0x0F instead of 0x03.) 15612 15613 Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName, 15614 preventing 15615 a 15616 fault in some cases. 15617 15618 Updated Notify() values for debug statements in evmisc.c 15619 15620 Return proper status from AcpiUtMutexInitialize, not just simply AE_OK. 15621 15622 Code and Data Size: Current and previous core subsystem library sizes are 15623 shown below. These are the code and data sizes for the acpica.lib 15624 produced 15625 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 15626 any ACPI driver or OSPM code. The debug version of the code includes the 15627 debug output trace mechanism and has a much larger code and data size. 15628 Note 15629 that these values will vary depending on the efficiency of the compiler 15630 and 15631 the compiler options used during generation. 15632 15633 Previous Release: 15634 15635 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 15636 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 15637 Current Release: 15638 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 15639 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 15640 15641 ---------------------------------------- 15642 11 March 2004. Summary of changes for version 20040311: 15643 15644 1) ACPI CA Core Subsystem: 15645 15646 Fixed a problem where errors occurring during the parse phase of control 15647 method execution did not abort cleanly. For example, objects created and 15648 installed in the namespace were not deleted. This caused all subsequent 15649 invocations of the method to return the AE_ALREADY_EXISTS exception. 15650 15651 Implemented a mechanism to force a control method to "Serialized" 15652 execution 15653 if the method attempts to create namespace objects. (The root of the 15654 AE_ALREADY_EXISTS problem.) 15655 15656 Implemented support for the predefined _OSI "internal" control method. 15657 Initial supported strings are "Linux", "Windows 2000", "Windows 2001", 15658 and 15659 "Windows 2001.1", and can be easily upgraded for new strings as 15660 necessary. 15661 This feature will allow "other" operating systems to execute the fully 15662 tested, "Windows" code path through the ASL code 15663 15664 Global Lock Support: Now allows multiple acquires and releases with any 15665 internal thread. Removed concept of "owning thread" for this special 15666 mutex. 15667 15668 Fixed two functions that were inappropriately declaring large objects on 15669 the 15670 CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage 15671 during 15672 method execution considerably. 15673 15674 Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the 15675 S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT. 15676 15677 Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs 15678 defined on the machine. 15679 15680 Implemented two runtime options: One to force all control method 15681 execution 15682 to "Serialized" to mimic Windows behavior, another to disable _OSI 15683 support 15684 if it causes problems on a given machine. 15685 15686 Code and Data Size: Current and previous core subsystem library sizes are 15687 shown below. These are the code and data sizes for the acpica.lib 15688 produced 15689 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 15690 any ACPI driver or OSPM code. The debug version of the code includes the 15691 debug output trace mechanism and has a much larger code and data size. 15692 Note 15693 that these values will vary depending on the efficiency of the compiler 15694 and 15695 the compiler options used during generation. 15696 15697 Previous Release: 15698 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 15699 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 15700 Current Release: 15701 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 15702 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 15703 15704 2) iASL Compiler/Disassembler: 15705 15706 Fixed an array size problem for FreeBSD that would cause the compiler to 15707 fault. 15708 15709 ---------------------------------------- 15710 20 February 2004. Summary of changes for version 20040220: 15711 15712 15713 1) ACPI CA Core Subsystem: 15714 15715 Implemented execution of _SxD methods for Device objects in the 15716 GetObjectInfo interface. 15717 15718 Fixed calls to _SST method to pass the correct arguments. 15719 15720 Added a call to _SST on wake to restore to "working" state. 15721 15722 Check for End-Of-Buffer failure case in the WalkResources interface. 15723 15724 Integrated fix for 64-bit alignment issue in acglobal.h by moving two 15725 structures to the beginning of the file. 15726 15727 After wake, clear GPE status register(s) before enabling GPEs. 15728 15729 After wake, clear/enable power button. (Perhaps we should clear/enable 15730 all 15731 fixed events upon wake.) 15732 15733 Fixed a couple of possible memory leaks in the Namespace manager. 15734 15735 Integrated latest acnetbsd.h file. 15736 15737 ---------------------------------------- 15738 11 February 2004. Summary of changes for version 20040211: 15739 15740 15741 1) ACPI CA Core Subsystem: 15742 15743 Completed investigation and implementation of the call-by-reference 15744 mechanism for control method arguments. 15745 15746 Fixed a problem where a store of an object into an indexed package could 15747 fail if the store occurs within a different method than the method that 15748 created the package. 15749 15750 Fixed a problem where the ToDecimal operator could return incorrect 15751 results. 15752 15753 Fixed a problem where the CopyObject operator could fail on some of the 15754 more 15755 obscure objects (e.g., Reference objects.) 15756 15757 Improved the output of the Debug object to display buffer, package, and 15758 index objects. 15759 15760 Fixed a problem where constructs of the form "RefOf (ArgX)" did not 15761 return 15762 the expected result. 15763 15764 Added permanent ACPI_REPORT_ERROR macros for all instances of the 15765 ACPI_AML_INTERNAL exception. 15766 15767 Integrated latest version of acfreebsd.h 15768 15769 ---------------------------------------- 15770 16 January 2004. Summary of changes for version 20040116: 15771 15772 The purpose of this release is primarily to update the copyright years in 15773 each module, thus causing a huge number of diffs. There are a few small 15774 functional changes, however. 15775 15776 1) ACPI CA Core Subsystem: 15777 15778 Improved error messages when there is a problem finding one or more of 15779 the 15780 required base ACPI tables 15781 15782 Reintroduced the definition of APIC_HEADER in actbl.h 15783 15784 Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h) 15785 15786 Removed extraneous reference to NewObj in dsmthdat.c 15787 15788 2) iASL compiler 15789 15790 Fixed a problem introduced in December that disabled the correct 15791 disassembly 15792 of Resource Templates 15793 15794 15795 ---------------------------------------- 15796 03 December 2003. Summary of changes for version 20031203: 15797 15798 1) ACPI CA Core Subsystem: 15799 15800 Changed the initialization of Operation Regions during subsystem 15801 init to perform two entire walks of the ACPI namespace; The first 15802 to initialize the regions themselves, the second to execute the 15803 _REG methods. This fixed some interdependencies across _REG 15804 methods found on some machines. 15805 15806 Fixed a problem where a Store(Local0, Local1) could simply update 15807 the object reference count, and not create a new copy of the 15808 object if the Local1 is uninitialized. 15809 15810 Implemented support for the _SST reserved method during sleep 15811 transitions. 15812 15813 Implemented support to clear the SLP_TYP and SLP_EN bits when 15814 waking up, this is apparently required by some machines. 15815 15816 When sleeping, clear the wake status only if SleepState is not S5. 15817 15818 Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect 15819 pointer arithmetic advanced a string pointer too far. 15820 15821 Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer 15822 could be returned if the requested table has not been loaded. 15823 15824 Within the support for IRQ resources, restructured the handling of 15825 the active and edge/level bits. 15826 15827 Fixed a few problems in AcpiPsxExecute() where memory could be 15828 leaked under certain error conditions. 15829 15830 Improved error messages for the cases where the ACPI mode could 15831 not be entered. 15832 15833 Code and Data Size: Current and previous core subsystem library 15834 sizes are shown below. These are the code and data sizes for the 15835 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 15836 these values do not include any ACPI driver or OSPM code. The 15837 debug version of the code includes the debug output trace 15838 mechanism and has a much larger code and data size. Note that 15839 these values will vary depending on the efficiency of the compiler 15840 and the compiler options used during generation. 15841 15842 Previous Release (20031029): 15843 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 15844 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 15845 Current Release: 15846 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 15847 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 15848 15849 2) iASL Compiler/Disassembler: 15850 15851 Implemented a fix for the iASL disassembler where a bad index was 15852 generated. This was most noticeable on 64-bit platforms 15853 15854 15855 ---------------------------------------- 15856 29 October 2003. Summary of changes for version 20031029: 15857 15858 1) ACPI CA Core Subsystem: 15859 15860 15861 Fixed a problem where a level-triggered GPE with an associated 15862 _Lxx control method was incorrectly cleared twice. 15863 15864 Fixed a problem with the Field support code where an access can 15865 occur beyond the end-of-region if the field is non-aligned but 15866 extends to the very end of the parent region (resulted in an 15867 AE_AML_REGION_LIMIT exception.) 15868 15869 Fixed a problem with ACPI Fixed Events where an RT Clock handler 15870 would not get invoked on an RTC event. The RTC event bitmasks for 15871 the PM1 registers were not being initialized properly. 15872 15873 Implemented support for executing _STA and _INI methods for 15874 Processor objects. Although this is currently not part of the 15875 ACPI specification, there is existing ASL code that depends on the 15876 init-time execution of these methods. 15877 15878 Implemented and deployed a GetDescriptorName function to decode 15879 the various types of internal descriptors. Guards against null 15880 descriptors during debug output also. 15881 15882 Implemented and deployed a GetNodeName function to extract the 4- 15883 character namespace node name. This function simplifies the debug 15884 and error output, as well as guarding against null pointers during 15885 output. 15886 15887 Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to 15888 simplify the debug and error output of 64-bit integers. This 15889 macro replaces the HIDWORD and LODWORD macros for dumping these 15890 integers. 15891 15892 Updated the implementation of the Stall() operator to only call 15893 AcpiOsStall(), and also return an error if the operand is larger 15894 than 255. This preserves the required behavior of not 15895 relinquishing the processor, as would happen if AcpiOsSleep() was 15896 called for "long stalls". 15897 15898 Constructs of the form "Store(LocalX,LocalX)" where LocalX is not 15899 initialized are now treated as NOOPs. 15900 15901 Cleaned up a handful of warnings during 64-bit generation. 15902 15903 Fixed a reported error where and incorrect GPE number was passed 15904 to the GPE dispatch handler. This value is only used for error 15905 output, however. Used this opportunity to clean up and streamline 15906 the GPE dispatch code. 15907 15908 Code and Data Size: Current and previous core subsystem library 15909 sizes are shown below. These are the code and data sizes for the 15910 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 15911 these values do not include any ACPI driver or OSPM code. The 15912 15913 debug version of the code includes the debug output trace 15914 mechanism and has a much larger code and data size. Note that 15915 these values will vary depending on the efficiency of the compiler 15916 and the compiler options used during generation. 15917 15918 Previous Release (20031002): 15919 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 15920 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 15921 Current Release: 15922 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 15923 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 15924 15925 15926 2) iASL Compiler/Disassembler: 15927 15928 Updated the iASL compiler to return an error if the operand to the 15929 Stall() operator is larger than 255. 15930 15931 15932 ---------------------------------------- 15933 02 October 2003. Summary of changes for version 20031002: 15934 15935 15936 1) ACPI CA Core Subsystem: 15937 15938 Fixed a problem with Index Fields where the index was not 15939 incremented for fields that require multiple writes to the 15940 index/data registers (Fields that are wider than the data 15941 register.) 15942 15943 Fixed a problem with all Field objects where a write could go 15944 beyond the end-of-field if the field was larger than the access 15945 granularity and therefore required multiple writes to complete the 15946 request. An extra write beyond the end of the field could happen 15947 inadvertently. 15948 15949 Fixed a problem with Index Fields where a BUFFER_OVERFLOW error 15950 would incorrectly be returned if the width of the Data Register 15951 was larger than the specified field access width. 15952 15953 Completed fixes for LoadTable() and Unload() and verified their 15954 operation. Implemented full support for the "DdbHandle" object 15955 throughout the ACPI CA subsystem. 15956 15957 Implemented full support for the MADT and ECDT tables in the ACPI 15958 CA header files. Even though these tables are not directly 15959 consumed by ACPI CA, the header definitions are useful for ACPI 15960 device drivers. 15961 15962 Integrated resource descriptor fixes posted to the Linux ACPI 15963 list. This included checks for minimum descriptor length, and 15964 support for trailing NULL strings within descriptors that have 15965 optional string elements. 15966 15967 Code and Data Size: Current and previous core subsystem library 15968 sizes are shown below. These are the code and data sizes for the 15969 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 15970 these values do not include any ACPI driver or OSPM code. The 15971 debug version of the code includes the debug output trace 15972 mechanism and has a much larger code and data size. Note that 15973 these values will vary depending on the efficiency of the compiler 15974 and the compiler options used during generation. 15975 15976 Previous Release (20030918): 15977 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 15978 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 15979 Current Release: 15980 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 15981 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 15982 15983 15984 2) iASL Compiler: 15985 15986 Implemented detection of non-ASCII characters within the input 15987 source ASL file. This catches attempts to compile binary (AML) 15988 files early in the compile, with an informative error message. 15989 15990 Fixed a problem where the disassembler would fault if the output 15991 filename could not be generated or if the output file could not be 15992 opened. 15993 15994 ---------------------------------------- 15995 18 September 2003. Summary of changes for version 20030918: 15996 15997 15998 1) ACPI CA Core Subsystem: 15999 16000 Found and fixed a longstanding problem with the late execution of 16001 the various deferred AML opcodes (such as Operation Regions, 16002 Buffer Fields, Buffers, and Packages). If the name string 16003 specified for the name of the new object placed the object in a 16004 scope other than the current scope, the initialization/execution 16005 of the opcode failed. The solution to this problem was to 16006 implement a mechanism where the late execution of such opcodes 16007 does not attempt to lookup/create the name a second time in an 16008 incorrect scope. This fixes the "region size computed 16009 incorrectly" problem. 16010 16011 Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a 16012 Global Lock AE_BAD_PARAMETER error. 16013 16014 Fixed several 64-bit issues with prototypes, casting and data 16015 types. 16016 16017 Removed duplicate prototype from acdisasm.h 16018 16019 Fixed an issue involving EC Operation Region Detach (Shaohua Li) 16020 16021 Code and Data Size: Current and previous core subsystem library 16022 sizes are shown below. These are the code and data sizes for the 16023 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 16024 these values do not include any ACPI driver or OSPM code. The 16025 debug version of the code includes the debug output trace 16026 mechanism and has a much larger code and data size. Note that 16027 these values will vary depending on the efficiency of the compiler 16028 and the compiler options used during generation. 16029 16030 Previous Release: 16031 16032 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 16033 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 16034 Current Release: 16035 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 16036 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 16037 16038 16039 2) Linux: 16040 16041 Fixed the AcpiOsSleep implementation in osunixxf.c to pass the 16042 correct sleep time in seconds. 16043 16044 ---------------------------------------- 16045 14 July 2003. Summary of changes for version 20030619: 16046 16047 1) ACPI CA Core Subsystem: 16048 16049 Parse SSDTs in order discovered, as opposed to reverse order 16050 (Hrvoje Habjanic) 16051 16052 Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas 16053 Klausner, 16054 Nate Lawson) 16055 16056 16057 2) Linux: 16058 16059 Dynamically allocate SDT list (suggested by Andi Kleen) 16060 16061 proc function return value cleanups (Andi Kleen) 16062 16063 Correctly handle NMI watchdog during long stalls (Andrew Morton) 16064 16065 Make it so acpismp=force works (reported by Andrew Morton) 16066 16067 16068 ---------------------------------------- 16069 19 June 2003. Summary of changes for version 20030619: 16070 16071 1) ACPI CA Core Subsystem: 16072 16073 Fix To/FromBCD, eliminating the need for an arch-specific #define. 16074 16075 Do not acquire a semaphore in the S5 shutdown path. 16076 16077 Fix ex_digits_needed for 0. (Takayoshi Kochi) 16078 16079 Fix sleep/stall code reversal. (Andi Kleen) 16080 16081 Revert a change having to do with control method calling 16082 semantics. 16083 16084 2) Linux: 16085 16086 acpiphp update (Takayoshi Kochi) 16087 16088 Export acpi_disabled for sonypi (Stelian Pop) 16089 16090 Mention acpismp=force in config help 16091 16092 Re-add acpitable.c and acpismp=force. This improves backwards 16093 16094 compatibility and also cleans up the code to a significant degree. 16095 16096 Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge) 16097 16098 ---------------------------------------- 16099 22 May 2003. Summary of changes for version 20030522: 16100 16101 1) ACPI CA Core Subsystem: 16102 16103 Found and fixed a reported problem where an AE_NOT_FOUND error 16104 occurred occasionally during _BST evaluation. This turned out to 16105 be an Owner ID allocation issue where a called method did not get 16106 a new ID assigned to it. Eventually, (after 64k calls), the Owner 16107 ID UINT16 would wraparound so that the ID would be the same as the 16108 caller's and the called method would delete the caller's 16109 namespace. 16110 16111 Implemented extended error reporting for control methods that are 16112 aborted due to a run-time exception. Output includes the exact 16113 AML instruction that caused the method abort, a dump of the method 16114 locals and arguments at the time of the abort, and a trace of all 16115 nested control method calls. 16116 16117 Modified the interpreter to allow the creation of buffers of zero 16118 length from the AML code. Implemented new code to ensure that no 16119 attempt is made to actually allocate a memory buffer (of length 16120 zero) - instead, a simple buffer object with a NULL buffer pointer 16121 and length zero is created. A warning is no longer issued when 16122 the AML attempts to create a zero-length buffer. 16123 16124 Implemented a workaround for the "leading asterisk issue" in 16125 _HIDs, _UIDs, and _CIDs in the AML interpreter. One leading 16126 asterisk is automatically removed if present in any HID, UID, or 16127 CID strings. The iASL compiler will still flag this asterisk as 16128 an error, however. 16129 16130 Implemented full support for _CID methods that return a package of 16131 multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface 16132 now additionally returns a device _CID list if present. This 16133 required a change to the external interface in order to pass an 16134 ACPI_BUFFER object as a parameter since the _CID list is of 16135 variable length. 16136 16137 Fixed a problem with the new AE_SAME_HANDLER exception where 16138 handler initialization code did not know about this exception. 16139 16140 Code and Data Size: Current and previous core subsystem library 16141 sizes are shown below. These are the code and data sizes for the 16142 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 16143 these values do not include any ACPI driver or OSPM code. The 16144 debug version of the code includes the debug output trace 16145 mechanism and has a much larger code and data size. Note that 16146 these values will vary depending on the efficiency of the compiler 16147 and the compiler options used during generation. 16148 16149 Previous Release (20030509): 16150 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 16151 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 16152 Current Release: 16153 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 16154 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 16155 16156 16157 2) Linux: 16158 16159 Fixed a bug in which we would reinitialize the ACPI interrupt 16160 after it was already working, thus disabling all ACPI and the IRQs 16161 for any other device sharing the interrupt. (Thanks to Stian 16162 Jordet) 16163 16164 Toshiba driver update (John Belmonte) 16165 16166 Return only 0 or 1 for our interrupt handler status (Andrew 16167 Morton) 16168 16169 16170 3) iASL Compiler: 16171 16172 Fixed a reported problem where multiple (nested) ElseIf() 16173 statements were not handled correctly by the compiler, resulting 16174 in incorrect warnings and incorrect AML code. This was a problem 16175 in both the ASL parser and the code generator. 16176 16177 16178 4) Documentation: 16179 16180 Added changes to existing interfaces, new exception codes, and new 16181 text concerning reference count object management versus garbage 16182 collection. 16183 16184 ---------------------------------------- 16185 09 May 2003. Summary of changes for version 20030509. 16186 16187 16188 1) ACPI CA Core Subsystem: 16189 16190 Changed the subsystem initialization sequence to hold off 16191 installation of address space handlers until the hardware has been 16192 initialized and the system has entered ACPI mode. This is because 16193 the installation of space handlers can cause _REG methods to be 16194 run. Previously, the _REG methods could potentially be run before 16195 ACPI mode was enabled. 16196 16197 Fixed some memory leak issues related to address space handler and 16198 notify handler installation. There were some problems with the 16199 reference count mechanism caused by the fact that the handler 16200 objects are shared across several namespace objects. 16201 16202 Fixed a reported problem where reference counts within the 16203 namespace were not properly updated when named objects created by 16204 method execution were deleted. 16205 16206 Fixed a reported problem where multiple SSDTs caused a deletion 16207 issue during subsystem termination. Restructured the table data 16208 structures to simplify the linked lists and the related code. 16209 16210 Fixed a problem where the table ID associated with secondary 16211 tables (SSDTs) was not being propagated into the namespace objects 16212 created by those tables. This would only present a problem for 16213 tables that are unloaded at run-time, however. 16214 16215 Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE 16216 type as the length parameter (instead of UINT32). 16217 16218 Solved a long-standing problem where an ALREADY_EXISTS error 16219 appears on various systems. This problem could happen when there 16220 are multiple PCI_Config operation regions under a single PCI root 16221 bus. This doesn't happen very frequently, but there are some 16222 systems that do this in the ASL. 16223 16224 Fixed a reported problem where the internal DeleteNode function 16225 was incorrectly handling the case where a namespace node was the 16226 first in the parent's child list, and had additional peers (not 16227 the only child, but first in the list of children.) 16228 16229 Code and Data Size: Current core subsystem library sizes are shown 16230 below. These are the code and data sizes for the acpica.lib 16231 produced by the Microsoft Visual C++ 6.0 compiler, and these 16232 values do not include any ACPI driver or OSPM code. The debug 16233 version of the code includes the debug output trace mechanism and 16234 has a much larger code and data size. Note that these values will 16235 vary depending on the efficiency of the compiler and the compiler 16236 options used during generation. 16237 16238 Previous Release 16239 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 16240 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 16241 Current Release: 16242 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 16243 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 16244 16245 16246 2) Linux: 16247 16248 Allow ":" in OS override string (Ducrot Bruno) 16249 16250 Kobject fix (Greg KH) 16251 16252 16253 3 iASL Compiler/Disassembler: 16254 16255 Fixed a problem in the generation of the C source code files (AML 16256 is emitted in C source statements for BIOS inclusion) where the 16257 Ascii dump that appears within a C comment at the end of each line 16258 could cause a compile time error if the AML sequence happens to 16259 have an open comment or close comment sequence embedded. 16260 16261 16262 ---------------------------------------- 16263 24 April 2003. Summary of changes for version 20030424. 16264 16265 16266 1) ACPI CA Core Subsystem: 16267 16268 Support for big-endian systems has been implemented. Most of the 16269 support has been invisibly added behind big-endian versions of the 16270 ACPI_MOVE_* macros. 16271 16272 Fixed a problem in AcpiHwDisableGpeBlock() and 16273 AcpiHwClearGpeBlock() where an incorrect offset was passed to the 16274 low level hardware write routine. The offset parameter was 16275 actually eliminated from the low level read/write routines because 16276 they had become obsolete. 16277 16278 Fixed a problem where a handler object was deleted twice during 16279 the removal of a fixed event handler. 16280 16281 16282 2) Linux: 16283 16284 A fix for SMP systems with link devices was contributed by 16285 16286 Compaq's Dan Zink. 16287 16288 (2.5) Return whether we handled the interrupt in our IRQ handler. 16289 (Linux ISRs no longer return void, so we can propagate the handler 16290 return value from the ACPI CA core back to the OS.) 16291 16292 16293 16294 3) Documentation: 16295 16296 The ACPI CA Programmer Reference has been updated to reflect new 16297 interfaces and changes to existing interfaces. 16298 16299 ---------------------------------------- 16300 28 March 2003. Summary of changes for version 20030328. 16301 16302 1) ACPI CA Core Subsystem: 16303 16304 The GPE Block Device support has been completed. New interfaces 16305 are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event 16306 interfaces (enable, disable, clear, getstatus) have been split 16307 into separate interfaces for Fixed Events and General Purpose 16308 Events (GPEs) in order to support GPE Block Devices properly. 16309 16310 Fixed a problem where the error message "Failed to acquire 16311 semaphore" would appear during operations on the embedded 16312 controller (EC). 16313 16314 Code and Data Size: Current core subsystem library sizes are shown 16315 below. These are the code and data sizes for the acpica.lib 16316 produced by the Microsoft Visual C++ 6.0 compiler, and these 16317 values do not include any ACPI driver or OSPM code. The debug 16318 version of the code includes the debug output trace mechanism and 16319 has a much larger code and data size. Note that these values will 16320 vary depending on the efficiency of the compiler and the compiler 16321 options used during generation. 16322 16323 Previous Release 16324 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 16325 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 16326 Current Release: 16327 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 16328 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 16329 16330 16331 ---------------------------------------- 16332 28 February 2003. Summary of changes for version 20030228. 16333 16334 16335 1) ACPI CA Core Subsystem: 16336 16337 The GPE handling and dispatch code has been completely overhauled 16338 in preparation for support of GPE Block Devices (ID ACPI0006). 16339 This affects internal data structures and code only; there should 16340 be no differences visible externally. One new file has been 16341 added, evgpeblk.c 16342 16343 The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only 16344 fields that are used to determine the GPE block lengths. The 16345 REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address 16346 structures are ignored. This is per the ACPI specification but it 16347 isn't very clear. The full 256 Block 0/1 GPEs are now supported 16348 (the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128). 16349 16350 In the SCI interrupt handler, removed the read of the PM1_CONTROL 16351 register to look at the SCI_EN bit. On some machines, this read 16352 causes an SMI event and greatly slows down SCI events. (This may 16353 in fact be the cause of slow battery status response on some 16354 systems.) 16355 16356 Fixed a problem where a store of a NULL string to a package object 16357 could cause the premature deletion of the object. This was seen 16358 during execution of the battery _BIF method on some systems, 16359 resulting in no battery data being returned. 16360 16361 Added AcpiWalkResources interface to simplify parsing of resource 16362 lists. 16363 16364 Code and Data Size: Current core subsystem library sizes are shown 16365 below. These are the code and data sizes for the acpica.lib 16366 produced by the Microsoft Visual C++ 6.0 compiler, and these 16367 values do not include any ACPI driver or OSPM code. The debug 16368 version of the code includes the debug output trace mechanism and 16369 has a much larger code and data size. Note that these values will 16370 vary depending on the efficiency of the compiler and the compiler 16371 options used during generation. 16372 16373 Previous Release 16374 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 16375 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 16376 Current Release: 16377 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 16378 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 16379 16380 16381 2) Linux 16382 16383 S3 fixes (Ole Rohne) 16384 16385 Update ACPI PHP driver with to use new acpi_walk_resource API 16386 (Bjorn Helgaas) 16387 16388 Add S4BIOS support (Pavel Machek) 16389 16390 Map in entire table before performing checksum (John Stultz) 16391 16392 Expand the mem= cmdline to allow the specification of reserved and 16393 ACPI DATA blocks (Pavel Machek) 16394 16395 Never use ACPI on VISWS 16396 16397 Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez) 16398 16399 Revert a change that allowed P_BLK lengths to be 4 or 5. This is 16400 causing us to think that some systems support C2 when they really 16401 don't. 16402 16403 Do not count processor objects for non-present CPUs (Thanks to 16404 Dominik Brodowski) 16405 16406 16407 3) iASL Compiler: 16408 16409 Fixed a problem where ASL include files could not be found and 16410 opened. 16411 16412 Added support for the _PDC reserved name. 16413 16414 16415 ---------------------------------------- 16416 22 January 2003. Summary of changes for version 20030122. 16417 16418 16419 1) ACPI CA Core Subsystem: 16420 16421 Added a check for constructs of the form: Store (Local0, Local0) 16422 where Local0 is not initialized. Apparently, some BIOS 16423 programmers believe that this is a NOOP. Since this store doesn't 16424 do anything anyway, the new prototype behavior will ignore this 16425 error. This is a case where we can relax the strict checking in 16426 the interpreter in the name of compatibility. 16427 16428 16429 2) Linux 16430 16431 The AcpiSrc Source Conversion Utility has been released with the 16432 Linux package for the first time. This is the utility that is 16433 used to convert the ACPI CA base source code to the Linux version. 16434 16435 (Both) Handle P_BLK lengths shorter than 6 more gracefully 16436 16437 (Both) Move more headers to include/acpi, and delete an unused 16438 header. 16439 16440 (Both) Move drivers/acpi/include directory to include/acpi 16441 16442 (Both) Boot functions don't use cmdline, so don't pass it around 16443 16444 (Both) Remove include of unused header (Adrian Bunk) 16445 16446 (Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since 16447 the 16448 former now also includes the latter, acpiphp.h only needs the one, 16449 now. 16450 16451 (2.5) Make it possible to select method of bios restoring after S3 16452 resume. [=> no more ugly ifdefs] (Pavel Machek) 16453 16454 (2.5) Make proc write interfaces work (Pavel Machek) 16455 16456 (2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski) 16457 16458 (2.5) Break out ACPI Perf code into its own module, under cpufreq 16459 (Dominik Brodowski) 16460 16461 (2.4) S4BIOS support (Ducrot Bruno) 16462 16463 (2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio 16464 Visinoni) 16465 16466 16467 3) iASL Compiler: 16468 16469 Added support to disassemble SSDT and PSDTs. 16470 16471 Implemented support to obtain SSDTs from the Windows registry if 16472 available. 16473 16474 16475 ---------------------------------------- 16476 09 January 2003. Summary of changes for version 20030109. 16477 16478 1) ACPI CA Core Subsystem: 16479 16480 Changed the behavior of the internal Buffer-to-String conversion 16481 function. The current ACPI specification states that the contents 16482 of the buffer are "converted to a string of two-character 16483 hexadecimal numbers, each separated by a space". Unfortunately, 16484 this definition is not backwards compatible with existing ACPI 1.0 16485 implementations (although the behavior was not defined in the ACPI 16486 1.0 specification). The new behavior simply copies data from the 16487 buffer to the string until a null character is found or the end of 16488 the buffer is reached. The new String object is always null 16489 terminated. This problem was seen during the generation of _BIF 16490 battery data where incorrect strings were returned for battery 16491 type, etc. This will also require an errata to the ACPI 16492 specification. 16493 16494 Renamed all instances of NATIVE_UINT and NATIVE_INT to 16495 ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively. 16496 16497 Copyright in all module headers (both Linux and non-Linux) has be 16498 updated to 2003. 16499 16500 Code and Data Size: Current core subsystem library sizes are shown 16501 below. These are the code and data sizes for the acpica.lib 16502 produced by the Microsoft Visual C++ 6.0 compiler, and these 16503 values do not include any ACPI driver or OSPM code. The debug 16504 version of the code includes the debug output trace mechanism and 16505 has a much larger code and data size. Note that these values will 16506 vary depending on the efficiency of the compiler and the compiler 16507 options used during generation. 16508 16509 Previous Release 16510 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 16511 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 16512 Current Release: 16513 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 16514 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 16515 16516 16517 2) Linux 16518 16519 Fixed an oops on module insertion/removal (Matthew Tippett) 16520 16521 (2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante) 16522 16523 (2.5) Replace pr_debug (Randy Dunlap) 16524 16525 (2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski) 16526 16527 (Both) Eliminate spawning of thread from timer callback, in favor 16528 of schedule_work() 16529 16530 (Both) Show Lid status in /proc (Zdenek OGAR Skalak) 16531 16532 (Both) Added define for Fixed Function HW region (Matthew Wilcox) 16533 16534 (Both) Add missing statics to button.c (Pavel Machek) 16535 16536 Several changes have been made to the source code translation 16537 utility that generates the Linux Code in order to make the code 16538 more "Linux-like": 16539 16540 All typedefs on structs and unions have been removed in keeping 16541 with the Linux coding style. 16542 16543 Removed the non-Linux SourceSafe module revision number from each 16544 module header. 16545 16546 Completed major overhaul of symbols to be lowercase for linux. 16547 Doubled the number of symbols that are lowercase. 16548 16549 Fixed a problem where identifiers within procedure headers and 16550 within quotes were not fully lower cased (they were left with a 16551 starting capital.) 16552 16553 Some C macros whose only purpose is to allow the generation of 16- 16554 bit code are now completely removed in the Linux code, increasing 16555 readability and maintainability. 16556 16557 ---------------------------------------- 16558 16559 12 December 2002. Summary of changes for version 20021212. 16560 16561 16562 1) ACPI CA Core Subsystem: 16563 16564 Fixed a problem where the creation of a zero-length AML Buffer 16565 would cause a fault. 16566 16567 Fixed a problem where a Buffer object that pointed to a static AML 16568 buffer (in an ACPI table) could inadvertently be deleted, causing 16569 memory corruption. 16570 16571 Fixed a problem where a user buffer (passed in to the external 16572 ACPI CA interfaces) could be overwritten if the buffer was too 16573 small to complete the operation, causing memory corruption. 16574 16575 Fixed a problem in the Buffer-to-String conversion code where a 16576 string of length one was always returned, regardless of the size 16577 of the input Buffer object. 16578 16579 Removed the NATIVE_CHAR data type across the entire source due to 16580 lack of need and lack of consistent use. 16581 16582 Code and Data Size: Current core subsystem library sizes are shown 16583 below. These are the code and data sizes for the acpica.lib 16584 produced by the Microsoft Visual C++ 6.0 compiler, and these 16585 values do not include any ACPI driver or OSPM code. The debug 16586 version of the code includes the debug output trace mechanism and 16587 has a much larger code and data size. Note that these values will 16588 vary depending on the efficiency of the compiler and the compiler 16589 options used during generation. 16590 16591 Previous Release 16592 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 16593 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 16594 Current Release: 16595 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 16596 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 16597 16598 16599 ---------------------------------------- 16600 05 December 2002. Summary of changes for version 20021205. 16601 16602 1) ACPI CA Core Subsystem: 16603 16604 Fixed a problem where a store to a String or Buffer object could 16605 cause corruption of the DSDT if the object type being stored was 16606 the same as the target object type and the length of the object 16607 being stored was equal to or smaller than the original (existing) 16608 target object. This was seen to cause corruption of battery _BIF 16609 buffers if the _BIF method modified the buffer on the fly. 16610 16611 Fixed a problem where an internal error was generated if a control 16612 method invocation was used in an OperationRegion, Buffer, or 16613 Package declaration. This was caused by the deferred parsing of 16614 the control method and thus the deferred creation of the internal 16615 method object. The solution to this problem was to create the 16616 internal method object at the moment the method is encountered in 16617 the first pass - so that subsequent references to the method will 16618 able to obtain the required parameter count and thus properly 16619 parse the method invocation. This problem presented itself as an 16620 AE_AML_INTERNAL during the pass 1 parse phase during table load. 16621 16622 Fixed a problem where the internal String object copy routine did 16623 not always allocate sufficient memory for the target String object 16624 and caused memory corruption. This problem was seen to cause 16625 "Allocation already present in list!" errors as memory allocation 16626 became corrupted. 16627 16628 Implemented a new function for the evaluation of namespace objects 16629 that allows the specification of the allowable return object 16630 types. This simplifies a lot of code that checks for a return 16631 object of one or more specific objects returned from the 16632 evaluation (such as _STA, etc.) This may become and external 16633 function if it would be useful to ACPI-related drivers. 16634 16635 Completed another round of prefixing #defines with "ACPI_" for 16636 clarity. 16637 16638 Completed additional code restructuring to allow more modular 16639 linking for iASL compiler and AcpiExec. Several files were split 16640 creating new files. New files: nsparse.c dsinit.c evgpe.c 16641 16642 Implemented an abort mechanism to terminate an executing control 16643 method via the AML debugger. This feature is useful for debugging 16644 control methods that depend (wait) for specific hardware 16645 responses. 16646 16647 Code and Data Size: Current core subsystem library sizes are shown 16648 below. These are the code and data sizes for the acpica.lib 16649 produced by the Microsoft Visual C++ 6.0 compiler, and these 16650 values do not include any ACPI driver or OSPM code. The debug 16651 version of the code includes the debug output trace mechanism and 16652 has a much larger code and data size. Note that these values will 16653 vary depending on the efficiency of the compiler and the compiler 16654 options used during generation. 16655 16656 Previous Release 16657 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 16658 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 16659 Current Release: 16660 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 16661 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 16662 16663 16664 2) iASL Compiler/Disassembler 16665 16666 Fixed a compiler code generation problem for "Interrupt" Resource 16667 Descriptors. If specified in the ASL, the optional "Resource 16668 Source Index" and "Resource Source" fields were not inserted into 16669 the correct location within the AML resource descriptor, creating 16670 an invalid descriptor. 16671 16672 Fixed a disassembler problem for "Interrupt" resource descriptors. 16673 The optional "Resource Source Index" and "Resource Source" fields 16674 were ignored. 16675 16676 16677 ---------------------------------------- 16678 22 November 2002. Summary of changes for version 20021122. 16679 16680 16681 1) ACPI CA Core Subsystem: 16682 16683 Fixed a reported problem where an object stored to a Method Local 16684 or Arg was not copied to a new object during the store - the 16685 object pointer was simply copied to the Local/Arg. This caused 16686 all subsequent operations on the Local/Arg to also affect the 16687 original source of the store operation. 16688 16689 Fixed a problem where a store operation to a Method Local or Arg 16690 was not completed properly if the Local/Arg contained a reference 16691 (from RefOf) to a named field. The general-purpose store-to- 16692 namespace-node code is now used so that this case is handled 16693 automatically. 16694 16695 Fixed a problem where the internal object copy routine would cause 16696 a protection fault if the object being copied was a Package and 16697 contained either 1) a NULL package element or 2) a nested sub- 16698 package. 16699 16700 Fixed a problem with the GPE initialization that resulted from an 16701 ambiguity in the ACPI specification. One section of the 16702 specification states that both the address and length of the GPE 16703 block must be zero if the block is not supported. Another section 16704 implies that only the address need be zero if the block is not 16705 supported. The code has been changed so that both the address and 16706 the length must be non-zero to indicate a valid GPE block (i.e., 16707 if either the address or the length is zero, the GPE block is 16708 invalid.) 16709 16710 Code and Data Size: Current core subsystem library sizes are shown 16711 below. These are the code and data sizes for the acpica.lib 16712 produced by the Microsoft Visual C++ 6.0 compiler, and these 16713 values do not include any ACPI driver or OSPM code. The debug 16714 version of the code includes the debug output trace mechanism and 16715 has a much larger code and data size. Note that these values will 16716 vary depending on the efficiency of the compiler and the compiler 16717 options used during generation. 16718 16719 Previous Release 16720 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 16721 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 16722 Current Release: 16723 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 16724 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 16725 16726 16727 2) Linux 16728 16729 Cleaned up EC driver. Exported an external EC read/write 16730 interface. By going through this, other drivers (most notably 16731 sonypi) will be able to serialize access to the EC. 16732 16733 16734 3) iASL Compiler/Disassembler 16735 16736 Implemented support to optionally generate include files for both 16737 ASM and C (the -i switch). This simplifies BIOS development by 16738 automatically creating include files that contain external 16739 declarations for the symbols that are created within the 16740 16741 (optionally generated) ASM and C AML source files. 16742 16743 16744 ---------------------------------------- 16745 15 November 2002. Summary of changes for version 20021115. 16746 16747 1) ACPI CA Core Subsystem: 16748 16749 Fixed a memory leak problem where an error during resolution of 16750 16751 method arguments during a method invocation from another method 16752 failed to cleanup properly by deleting all successfully resolved 16753 argument objects. 16754 16755 Fixed a problem where the target of the Index() operator was not 16756 correctly constructed if the source object was a package. This 16757 problem has not been detected because the use of a target operand 16758 with Index() is very rare. 16759 16760 Fixed a problem with the Index() operator where an attempt was 16761 made to delete the operand objects twice. 16762 16763 Fixed a problem where an attempt was made to delete an operand 16764 twice during execution of the CondRefOf() operator if the target 16765 did not exist. 16766 16767 Implemented the first of perhaps several internal create object 16768 functions that create and initialize a specific object type. This 16769 consolidates duplicated code wherever the object is created, thus 16770 shrinking the size of the subsystem. 16771 16772 Implemented improved debug/error messages for errors that occur 16773 during nested method invocations. All executing method pathnames 16774 are displayed (with the error) as the call stack is unwound - thus 16775 simplifying debug. 16776 16777 Fixed a problem introduced in the 10/02 release that caused 16778 premature deletion of a buffer object if a buffer was used as an 16779 ASL operand where an integer operand is required (Thus causing an 16780 implicit object conversion from Buffer to Integer.) The change in 16781 the 10/02 release was attempting to fix a memory leak (albeit 16782 incorrectly.) 16783 16784 Code and Data Size: Current core subsystem library sizes are shown 16785 below. These are the code and data sizes for the acpica.lib 16786 produced by the Microsoft Visual C++ 6.0 compiler, and these 16787 values do not include any ACPI driver or OSPM code. The debug 16788 version of the code includes the debug output trace mechanism and 16789 has a much larger code and data size. Note that these values will 16790 vary depending on the efficiency of the compiler and the compiler 16791 options used during generation. 16792 16793 Previous Release 16794 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 16795 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 16796 Current Release: 16797 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 16798 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 16799 16800 16801 2) Linux 16802 16803 Changed the implementation of the ACPI semaphores to use down() 16804 instead of down_interruptable(). It is important that the 16805 execution of ACPI control methods not be interrupted by signals. 16806 Methods must run to completion, or the system may be left in an 16807 unknown/unstable state. 16808 16809 Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set. 16810 (Shawn Starr) 16811 16812 16813 3) iASL Compiler/Disassembler 16814 16815 16816 Changed the default location of output files. All output files 16817 are now placed in the current directory by default instead of in 16818 the directory of the source file. This change may affect some 16819 existing makefiles, but it brings the behavior of the compiler in 16820 line with other similar tools. The location of the output files 16821 can be overridden with the -p command line switch. 16822 16823 16824 ---------------------------------------- 16825 11 November 2002. Summary of changes for version 20021111. 16826 16827 16828 0) ACPI Specification 2.0B is released and is now available at: 16829 http://www.acpi.info/index.html 16830 16831 16832 1) ACPI CA Core Subsystem: 16833 16834 Implemented support for the ACPI 2.0 SMBus Operation Regions. 16835 This includes the early detection and handoff of the request to 16836 the SMBus region handler (avoiding all of the complex field 16837 support code), and support for the bidirectional return packet 16838 from an SMBus write operation. This paves the way for the 16839 development of SMBus drivers in each host operating system. 16840 16841 Fixed a problem where the semaphore WAIT_FOREVER constant was 16842 defined as 32 bits, but must be 16 bits according to the ACPI 16843 specification. This had the side effect of causing ASL 16844 Mutex/Event timeouts even though the ASL code requested a wait 16845 forever. Changed all internal references to the ACPI timeout 16846 parameter to 16 bits to prevent future problems. Changed the name 16847 of WAIT_FOREVER to ACPI_WAIT_FOREVER. 16848 16849 Code and Data Size: Current core subsystem library sizes are shown 16850 below. These are the code and data sizes for the acpica.lib 16851 produced by the Microsoft Visual C++ 6.0 compiler, and these 16852 values do not include any ACPI driver or OSPM code. The debug 16853 version of the code includes the debug output trace mechanism and 16854 has a much larger code and data size. Note that these values will 16855 vary depending on the efficiency of the compiler and the compiler 16856 options used during generation. 16857 16858 Previous Release 16859 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 16860 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 16861 Current Release: 16862 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 16863 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 16864 16865 16866 2) Linux 16867 16868 Module loading/unloading fixes (John Cagle) 16869 16870 16871 3) iASL Compiler/Disassembler 16872 16873 Added support for the SMBBlockProcessCall keyword (ACPI 2.0) 16874 16875 Implemented support for the disassembly of all SMBus protocol 16876 keywords (SMBQuick, SMBWord, etc.) 16877 16878 ---------------------------------------- 16879 01 November 2002. Summary of changes for version 20021101. 16880 16881 16882 1) ACPI CA Core Subsystem: 16883 16884 Fixed a problem where platforms that have a GPE1 block but no GPE0 16885 block were not handled correctly. This resulted in a "GPE 16886 overlap" error message. GPE0 is no longer required. 16887 16888 Removed code added in the previous release that inserted nodes 16889 into the namespace in alphabetical order. This caused some side- 16890 effects on various machines. The root cause of the problem is 16891 still under investigation since in theory, the internal ordering 16892 of the namespace nodes should not matter. 16893 16894 16895 Enhanced error reporting for the case where a named object is not 16896 found during control method execution. The full ACPI namepath 16897 (name reference) of the object that was not found is displayed in 16898 this case. 16899 16900 Note: as a result of the overhaul of the namespace object types in 16901 the previous release, the namespace nodes for the predefined 16902 scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE 16903 instead of ACPI_TYPE_ANY. This simplifies the namespace 16904 management code but may affect code that walks the namespace tree 16905 looking for specific object types. 16906 16907 Code and Data Size: Current core subsystem library sizes are shown 16908 below. These are the code and data sizes for the acpica.lib 16909 produced by the Microsoft Visual C++ 6.0 compiler, and these 16910 values do not include any ACPI driver or OSPM code. The debug 16911 version of the code includes the debug output trace mechanism and 16912 has a much larger code and data size. Note that these values will 16913 vary depending on the efficiency of the compiler and the compiler 16914 options used during generation. 16915 16916 Previous Release 16917 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 16918 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 16919 Current Release: 16920 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 16921 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 16922 16923 16924 2) Linux 16925 16926 Fixed a problem introduced in the previous release where the 16927 Processor and Thermal objects were not recognized and installed in 16928 /proc. This was related to the scope type change described above. 16929 16930 16931 3) iASL Compiler/Disassembler 16932 16933 Implemented the -g option to get all of the required ACPI tables 16934 from the registry and save them to files (Windows version of the 16935 compiler only.) The required tables are the FADT, FACS, and DSDT. 16936 16937 Added ACPI table checksum validation during table disassembly in 16938 order to catch corrupted tables. 16939 16940 16941 ---------------------------------------- 16942 22 October 2002. Summary of changes for version 20021022. 16943 16944 1) ACPI CA Core Subsystem: 16945 16946 Implemented a restriction on the Scope operator that the target 16947 must already exist in the namespace at the time the operator is 16948 encountered (during table load or method execution). In other 16949 words, forward references are not allowed and Scope() cannot 16950 create a new object. This changes the previous behavior where the 16951 interpreter would create the name if not found. This new behavior 16952 correctly enables the search-to-root algorithm during namespace 16953 lookup of the target name. Because of this upsearch, this fixes 16954 the known Compaq _SB_.OKEC problem and makes both the AML 16955 interpreter and iASL compiler compatible with other ACPI 16956 implementations. 16957 16958 Completed a major overhaul of the internal ACPI object types for 16959 the ACPI Namespace and the associated operand objects. Many of 16960 these types had become obsolete with the introduction of the two- 16961 pass namespace load. This cleanup simplifies the code and makes 16962 the entire namespace load mechanism much clearer and easier to 16963 understand. 16964 16965 Improved debug output for tracking scope opening/closing to help 16966 diagnose scoping issues. The old scope name as well as the new 16967 scope name are displayed. Also improved error messages for 16968 problems with ASL Mutex objects and error messages for GPE 16969 problems. 16970 16971 Cleaned up the namespace dump code, removed obsolete code. 16972 16973 All string output (for all namespace/object dumps) now uses the 16974 common ACPI string output procedure which handles escapes properly 16975 and does not emit non-printable characters. 16976 16977 Fixed some issues with constants in the 64-bit version of the 16978 local C library (utclib.c) 16979 16980 16981 2) Linux 16982 16983 EC Driver: No longer attempts to acquire the Global Lock at 16984 interrupt level. 16985 16986 16987 3) iASL Compiler/Disassembler 16988 16989 Implemented ACPI 2.0B grammar change that disallows all Type 1 and 16990 2 opcodes outside of a control method. This means that the 16991 "executable" operators (versus the "namespace" operators) cannot 16992 be used at the table level; they can only be used within a control 16993 method. 16994 16995 Implemented the restriction on the Scope() operator where the 16996 target must already exist in the namespace at the time the 16997 operator is encountered (during ASL compilation). In other words, 16998 forward references are not allowed and Scope() cannot create a new 16999 object. This makes the iASL compiler compatible with other ACPI 17000 implementations and makes the Scope() implementation adhere to the 17001 ACPI specification. 17002 17003 Fixed a problem where namepath optimization for the Alias operator 17004 was optimizing the wrong path (of the two namepaths.) This caused 17005 a "Missing alias link" error message. 17006 17007 Fixed a problem where an "unknown reserved name" warning could be 17008 incorrectly generated for names like "_SB" when the trailing 17009 underscore is not used in the original ASL. 17010 17011 Fixed a problem where the reserved name check did not handle 17012 NamePaths with multiple NameSegs correctly. The first nameseg of 17013 the NamePath was examined instead of the last NameSeg. 17014 17015 17016 ---------------------------------------- 17017 17018 02 October 2002. Summary of changes for this release. 17019 17020 17021 1) ACPI CA Core Subsystem version 20021002: 17022 17023 Fixed a problem where a store/copy of a string to an existing 17024 string did not always set the string length properly in the String 17025 object. 17026 17027 Fixed a reported problem with the ToString operator where the 17028 behavior was identical to the ToHexString operator instead of just 17029 simply converting a raw buffer to a string data type. 17030 17031 Fixed a problem where CopyObject and the other "explicit" 17032 conversion operators were not updating the internal namespace node 17033 type as part of the store operation. 17034 17035 Fixed a memory leak during implicit source operand conversion 17036 where the original object was not deleted if it was converted to a 17037 new object of a different type. 17038 17039 Enhanced error messages for all problems associated with namespace 17040 lookups. Common procedure generates and prints the lookup name as 17041 well as the formatted status. 17042 17043 Completed implementation of a new design for the Alias support 17044 within the namespace. The existing design did not handle the case 17045 where a new object was assigned to one of the two names due to the 17046 use of an explicit conversion operator, resulting in the two names 17047 pointing to two different objects. The new design simply points 17048 the Alias name to the original name node - not to the object. 17049 This results in a level of indirection that must be handled in the 17050 name resolution mechanism. 17051 17052 Code and Data Size: Current core subsystem library sizes are shown 17053 below. These are the code and data sizes for the acpica.lib 17054 produced by the Microsoft Visual C++ 6.0 compiler, and these 17055 values do not include any ACPI driver or OSPM code. The debug 17056 version of the code includes the debug output trace mechanism and 17057 has a larger code and data size. Note that these values will vary 17058 depending on the efficiency of the compiler and the compiler 17059 options used during generation. 17060 17061 Previous Release 17062 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 17063 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 17064 Current Release: 17065 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 17066 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 17067 17068 17069 2) Linux 17070 17071 Initialize thermal driver's timer before it is used. (Knut 17072 Neumann) 17073 17074 Allow handling negative celsius values. (Kochi Takayoshi) 17075 17076 Fix thermal management and make trip points. R/W (Pavel Machek) 17077 17078 Fix /proc/acpi/sleep. (P. Christeas) 17079 17080 IA64 fixes. (David Mosberger) 17081 17082 Fix reversed logic in blacklist code. (Sergio Monteiro Basto) 17083 17084 Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik 17085 Brodowski) 17086 17087 17088 3) iASL Compiler/Disassembler 17089 17090 Clarified some warning/error messages. 17091 17092 17093 ---------------------------------------- 17094 18 September 2002. Summary of changes for this release. 17095 17096 17097 1) ACPI CA Core Subsystem version 20020918: 17098 17099 Fixed a reported problem with reference chaining (via the Index() 17100 and RefOf() operators) in the ObjectType() and SizeOf() operators. 17101 The definition of these operators includes the dereferencing of 17102 all chained references to return information on the base object. 17103 17104 Fixed a problem with stores to indexed package elements - the 17105 existing code would not complete the store if an "implicit 17106 conversion" was not performed. In other words, if the existing 17107 object (package element) was to be replaced completely, the code 17108 didn't handle this case. 17109 17110 Relaxed typechecking on the ASL "Scope" operator to allow the 17111 target name to refer to an object of type Integer, String, or 17112 Buffer, in addition to the scoping object types (Device, 17113 predefined Scopes, Processor, PowerResource, and ThermalZone.) 17114 This allows existing AML code that has workarounds for a bug in 17115 Windows to function properly. A warning is issued, however. This 17116 affects both the AML interpreter and the iASL compiler. Below is 17117 an example of this type of ASL code: 17118 17119 Name(DEB,0x00) 17120 Scope(DEB) 17121 { 17122 17123 Fixed some reported problems with 64-bit integer support in the 17124 local implementation of C library functions (clib.c) 17125 17126 17127 2) Linux 17128 17129 Use ACPI fix map region instead of IOAPIC region, since it is 17130 undefined in non-SMP. 17131 17132 Ensure that the SCI has the proper polarity and trigger, even on 17133 systems that do not have an interrupt override entry in the MADT. 17134 17135 2.5 big driver reorganization (Pat Mochel) 17136 17137 Use early table mapping code from acpitable.c (Andi Kleen) 17138 17139 New blacklist entries (Andi Kleen) 17140 17141 Blacklist improvements. Split blacklist code out into a separate 17142 file. Move checking the blacklist to very early. Previously, we 17143 would use ACPI tables, and then halfway through init, check the 17144 blacklist -- too late. Now, it's early enough to completely fall- 17145 back to non-ACPI. 17146 17147 17148 3) iASL Compiler/Disassembler version 20020918: 17149 17150 Fixed a problem where the typechecking code didn't know that an 17151 alias could point to a method. In other words, aliases were not 17152 being dereferenced during typechecking. 17153 17154 17155 ---------------------------------------- 17156 29 August 2002. Summary of changes for this release. 17157 17158 1) ACPI CA Core Subsystem Version 20020829: 17159 17160 If the target of a Scope() operator already exists, it must be an 17161 object type that actually opens a scope -- such as a Device, 17162 Method, Scope, etc. This is a fatal runtime error. Similar error 17163 check has been added to the iASL compiler also. 17164 17165 Tightened up the namespace load to disallow multiple names in the 17166 same scope. This previously was allowed if both objects were of 17167 the same type. (i.e., a lookup was the same as entering a new 17168 name). 17169 17170 17171 2) Linux 17172 17173 Ensure that the ACPI interrupt has the proper trigger and 17174 polarity. 17175 17176 local_irq_disable is extraneous. (Matthew Wilcox) 17177 17178 Make "acpi=off" actually do what it says, and not use the ACPI 17179 interpreter *or* the tables. 17180 17181 Added arch-neutral support for parsing SLIT and SRAT tables (Kochi 17182 Takayoshi) 17183 17184 17185 3) iASL Compiler/Disassembler Version 20020829: 17186 17187 Implemented namepath optimization for name declarations. For 17188 example, a declaration like "Method (\_SB_.ABCD)" would get 17189 optimized to "Method (ABCD)" if the declaration is within the 17190 \_SB_ scope. This optimization is in addition to the named 17191 reference path optimization first released in the previous 17192 version. This would seem to complete all possible optimizations 17193 for namepaths within the ASL/AML. 17194 17195 If the target of a Scope() operator already exists, it must be an 17196 object type that actually opens a scope -- such as a Device, 17197 Method, Scope, etc. 17198 17199 Implemented a check and warning for unreachable code in the same 17200 block below a Return() statement. 17201 17202 Fixed a problem where the listing file was not generated if the 17203 compiler aborted if the maximum error count was exceeded (200). 17204 17205 Fixed a problem where the typechecking of method return values was 17206 broken. This includes the check for a return value when the 17207 method is invoked as a TermArg (a return value is expected.) 17208 17209 Fixed a reported problem where EOF conditions during a quoted 17210 string or comment caused a fault. 17211 17212 17213 ---------------------------------------- 17214 15 August 2002. Summary of changes for this release. 17215 17216 1) ACPI CA Core Subsystem Version 20020815: 17217 17218 Fixed a reported problem where a Store to a method argument that 17219 contains a reference did not perform the indirect store correctly. 17220 This problem was created during the conversion to the new 17221 reference object model - the indirect store to a method argument 17222 code was not updated to reflect the new model. 17223 17224 Reworked the ACPI mode change code to better conform to ACPI 2.0, 17225 handle corner cases, and improve code legibility (Kochi Takayoshi) 17226 17227 Fixed a problem with the pathname parsing for the carat (^) 17228 prefix. The heavy use of the carat operator by the new namepath 17229 optimization in the iASL compiler uncovered a problem with the AML 17230 interpreter handling of this prefix. In the case where one or 17231 more carats precede a single nameseg, the nameseg was treated as 17232 standalone and the search rule (to root) was inadvertently 17233 applied. This could cause both the iASL compiler and the 17234 interpreter to find the wrong object or to miss the error that 17235 should occur if the object does not exist at that exact pathname. 17236 17237 Found and fixed the problem where the HP Pavilion DSDT would not 17238 load. This was a relatively minor tweak to the table loading code 17239 (a problem caused by the unexpected encounter with a method 17240 invocation not within a control method), but it does not solve the 17241 overall issue of the execution of AML code at the table level. 17242 This investigation is still ongoing. 17243 17244 Code and Data Size: Current core subsystem library sizes are shown 17245 below. These are the code and data sizes for the acpica.lib 17246 produced by the Microsoft Visual C++ 6.0 compiler, and these 17247 values do not include any ACPI driver or OSPM code. The debug 17248 version of the code includes the debug output trace mechanism and 17249 has a larger code and data size. Note that these values will vary 17250 depending on the efficiency of the compiler and the compiler 17251 options used during generation. 17252 17253 Previous Release 17254 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 17255 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 17256 Current Release: 17257 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 17258 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 17259 17260 17261 2) Linux 17262 17263 Remove redundant slab.h include (Brad Hards) 17264 17265 Fix several bugs in thermal.c (Herbert Nachtnebel) 17266 17267 Make CONFIG_ACPI_BOOT work properly (Pavel Machek) 17268 17269 Change acpi_system_suspend to use updated irq functions (Pavel 17270 Machek) 17271 17272 Export acpi_get_firmware_table (Matthew Wilcox) 17273 17274 Use proper root proc entry for ACPI (Kochi Takayoshi) 17275 17276 Fix early-boot table parsing (Bjorn Helgaas) 17277 17278 17279 3) iASL Compiler/Disassembler 17280 17281 Reworked the compiler options to make them more consistent and to 17282 use two-letter options where appropriate. We were running out of 17283 sensible letters. This may break some makefiles, so check the 17284 current options list by invoking the compiler with no parameters. 17285 17286 Completed the design and implementation of the ASL namepath 17287 optimization option for the compiler. This option optimizes all 17288 references to named objects to the shortest possible path. The 17289 first attempt tries to utilize a single nameseg (4 characters) and 17290 the "search-to-root" algorithm used by the interpreter. If that 17291 cannot be used (because either the name is not in the search path 17292 or there is a conflict with another object with the same name), 17293 the pathname is optimized using the carat prefix (usually a 17294 shorter string than specifying the entire path from the root.) 17295 17296 Implemented support to obtain the DSDT from the Windows registry 17297 (when the disassembly option is specified with no input file). 17298 Added this code as the implementation for AcpiOsTableOverride in 17299 the Windows OSL. Migrated the 16-bit code (used in the AcpiDump 17300 utility) to scan memory for the DSDT to the AcpiOsTableOverride 17301 function in the DOS OSL to make the disassembler truly OS 17302 independent. 17303 17304 Implemented a new option to disassemble and compile in one step. 17305 When used without an input filename, this option will grab the 17306 DSDT from the local machine, disassemble it, and compile it in one 17307 step. 17308 17309 Added a warning message for invalid escapes (a backslash followed 17310 by any character other than the allowable escapes). This catches 17311 the quoted string error "\_SB_" (which should be "\\_SB_" ). 17312 17313 Also, there are numerous instances in the ACPI specification where 17314 this error occurs. 17315 17316 Added a compiler option to disable all optimizations. This is 17317 basically the "compatibility mode" because by using this option, 17318 the AML code will come out exactly the same as other ASL 17319 compilers. 17320 17321 Added error messages for incorrectly ordered dependent resource 17322 functions. This includes: missing EndDependentFn macro at end of 17323 dependent resource list, nested dependent function macros (both 17324 start and end), and missing StartDependentFn macro. These are 17325 common errors that should be caught at compile time. 17326 17327 Implemented _OSI support for the disassembler and compiler. _OSI 17328 must be included in the namespace for proper disassembly (because 17329 the disassembler must know the number of arguments.) 17330 17331 Added an "optimization" message type that is optional (off by 17332 default). This message is used for all optimizations - including 17333 constant folding, integer optimization, and namepath optimization. 17334 17335 ---------------------------------------- 17336 25 July 2002. Summary of changes for this release. 17337 17338 17339 1) ACPI CA Core Subsystem Version 20020725: 17340 17341 The AML Disassembler has been enhanced to produce compilable ASL 17342 code and has been integrated into the iASL compiler (see below) as 17343 well as the single-step disassembly for the AML debugger and the 17344 disassembler for the AcpiDump utility. All ACPI 2.0A opcodes, 17345 resource templates and macros are fully supported. The 17346 disassembler has been tested on over 30 different AML files, 17347 producing identical AML when the resulting disassembled ASL file 17348 is recompiled with the same ASL compiler. 17349 17350 Modified the Resource Manager to allow zero interrupts and zero 17351 dma channels during the GetCurrentResources call. This was 17352 causing problems on some platforms. 17353 17354 Added the AcpiOsRedirectOutput interface to the OSL to simplify 17355 output redirection for the AcpiOsPrintf and AcpiOsVprintf 17356 interfaces. 17357 17358 Code and Data Size: Current core subsystem library sizes are shown 17359 below. These are the code and data sizes for the acpica.lib 17360 produced by the Microsoft Visual C++ 6.0 compiler, and these 17361 values do not include any ACPI driver or OSPM code. The debug 17362 version of the code includes the debug output trace mechanism and 17363 has a larger code and data size. Note that these values will vary 17364 depending on the efficiency of the compiler and the compiler 17365 options used during generation. 17366 17367 Previous Release 17368 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 17369 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 17370 Current Release: 17371 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 17372 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 17373 17374 17375 2) Linux 17376 17377 Fixed a panic in the EC driver (Dominik Brodowski) 17378 17379 Implemented checksum of the R/XSDT itself during Linux table scan 17380 (Richard Schaal) 17381 17382 17383 3) iASL compiler 17384 17385 The AML disassembler is integrated into the compiler. The "-d" 17386 option invokes the disassembler to completely disassemble an 17387 input AML file, producing as output a text ASL file with the 17388 extension ".dsl" (to avoid name collisions with existing .asl 17389 source files.) A future enhancement will allow the disassembler 17390 to obtain the BIOS DSDT from the registry under Windows. 17391 17392 Fixed a problem with the VendorShort and VendorLong resource 17393 descriptors where an invalid AML sequence was created. 17394 17395 Implemented a fix for BufferData term in the ASL parser. It was 17396 inadvertently defined twice, allowing invalid syntax to pass and 17397 causing reduction conflicts. 17398 17399 Fixed a problem where the Ones opcode could get converted to a 17400 value of zero if "Ones" was used where a byte, word or dword value 17401 was expected. The 64-bit value is now truncated to the correct 17402 size with the correct value. 17403 17404 17405 17406 ---------------------------------------- 17407 02 July 2002. Summary of changes for this release. 17408 17409 17410 1) ACPI CA Core Subsystem Version 20020702: 17411 17412 The Table Manager code has been restructured to add several new 17413 features. Tables that are not required by the core subsystem 17414 (other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer 17415 validated in any way and are returned from AcpiGetFirmwareTable if 17416 requested. The AcpiOsTableOverride interface is now called for 17417 each table that is loaded by the subsystem in order to allow the 17418 host to override any table it chooses. Previously, only the DSDT 17419 could be overridden. Added one new files, tbrsdt.c and 17420 tbgetall.c. 17421 17422 Fixed a problem with the conversion of internal package objects to 17423 external objects (when a package is returned from a control 17424 method.) The return buffer length was set to zero instead of the 17425 proper length of the package object. 17426 17427 Fixed a reported problem with the use of the RefOf and DeRefOf 17428 operators when passing reference arguments to control methods. A 17429 new type of Reference object is used internally for references 17430 produced by the RefOf operator. 17431 17432 Added additional error messages in the Resource Manager to explain 17433 AE_BAD_DATA errors when they occur during resource parsing. 17434 17435 Split the AcpiEnableSubsystem into two primitives to enable a 17436 finer granularity initialization sequence. These two calls should 17437 be called in this order: AcpiEnableSubsystem (flags), 17438 AcpiInitializeObjects (flags). The flags parameter remains the 17439 same. 17440 17441 17442 2) Linux 17443 17444 Updated the ACPI utilities module to understand the new style of 17445 fully resolved package objects that are now returned from the core 17446 subsystem. This eliminates errors of the form: 17447 17448 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT] 17449 acpi_utils-0430 [145] acpi_evaluate_reference: 17450 Invalid element in package (not a device reference) 17451 17452 The method evaluation utility uses the new buffer allocation 17453 scheme instead of calling AcpiEvaluate Object twice. 17454 17455 Added support for ECDT. This allows the use of the Embedded 17456 17457 Controller before the namespace has been fully initialized, which 17458 is necessary for ACPI 2.0 support, and for some laptops to 17459 initialize properly. (Laptops using ECDT are still rare, so only 17460 limited testing was performed of the added functionality.) 17461 17462 Fixed memory leaks in the EC driver. 17463 17464 Eliminated a brittle code structure in acpi_bus_init(). 17465 17466 Eliminated the acpi_evaluate() helper function in utils.c. It is 17467 no longer needed since acpi_evaluate_object can optionally 17468 allocate memory for the return object. 17469 17470 Implemented fix for keyboard hang when getting battery readings on 17471 some systems (Stephen White) 17472 17473 PCI IRQ routing update (Dominik Brodowski) 17474 17475 Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC 17476 support 17477 17478 ---------------------------------------- 17479 11 June 2002. Summary of changes for this release. 17480 17481 17482 1) ACPI CA Core Subsystem Version 20020611: 17483 17484 Fixed a reported problem where constants such as Zero and One 17485 appearing within _PRT packages were not handled correctly within 17486 the resource manager code. Originally reported against the ASL 17487 compiler because the code generator now optimizes integers to 17488 their minimal AML representation (i.e. AML constants if possible.) 17489 The _PRT code now handles all AML constant opcodes correctly 17490 (Zero, One, Ones, Revision). 17491 17492 Fixed a problem with the Concatenate operator in the AML 17493 interpreter where a buffer result object was incorrectly marked as 17494 not fully evaluated, causing a run-time error of AE_AML_INTERNAL. 17495 17496 All package sub-objects are now fully resolved before they are 17497 returned from the external ACPI interfaces. This means that name 17498 strings are resolved to object handles, and constant operators 17499 (Zero, One, Ones, Revision) are resolved to Integers. 17500 17501 Implemented immediate resolution of the AML Constant opcodes 17502 (Zero, One, Ones, Revision) to Integer objects upon detection 17503 within the AML stream. This has simplified and reduced the 17504 generated code size of the subsystem by eliminating about 10 17505 switch statements for these constants (which previously were 17506 contained in Reference objects.) The complicating issues are that 17507 the Zero opcode is used as a "placeholder" for unspecified 17508 optional target operands and stores to constants are defined to be 17509 no-ops. 17510 17511 Code and Data Size: Current core subsystem library sizes are shown 17512 below. These are the code and data sizes for the acpica.lib 17513 produced by the Microsoft Visual C++ 6.0 compiler, and these 17514 values do not include any ACPI driver or OSPM code. The debug 17515 version of the code includes the debug output trace mechanism and 17516 has a larger code and data size. Note that these values will vary 17517 depending on the efficiency of the compiler and the compiler 17518 options used during generation. 17519 17520 Previous Release 17521 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 17522 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 17523 Current Release: 17524 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 17525 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 17526 17527 17528 2) Linux 17529 17530 17531 Added preliminary support for obtaining _TRA data for PCI root 17532 bridges (Bjorn Helgaas). 17533 17534 17535 3) iASL Compiler Version X2046: 17536 17537 Fixed a problem where the "_DDN" reserved name was defined to be a 17538 control method with one argument. There are no arguments, and 17539 _DDN does not have to be a control method. 17540 17541 Fixed a problem with the Linux version of the compiler where the 17542 source lines printed with error messages were the wrong lines. 17543 This turned out to be the "LF versus CR/LF" difference between 17544 Windows and Unix. This appears to be the longstanding issue 17545 concerning listing output and error messages. 17546 17547 Fixed a problem with the Linux version of compiler where opcode 17548 names within error messages were wrong. This was caused by a 17549 slight difference in the output of the Flex tool on Linux versus 17550 Windows. 17551 17552 Fixed a problem with the Linux compiler where the hex output files 17553 contained some garbage data caused by an internal buffer overrun. 17554 17555 17556 ---------------------------------------- 17557 17 May 2002. Summary of changes for this release. 17558 17559 17560 1) ACPI CA Core Subsystem Version 20020517: 17561 17562 Implemented a workaround to an BIOS bug discovered on the HP 17563 OmniBook where the FADT revision number and the table size are 17564 inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new 17565 behavior is to fallback to using only the ACPI 1.0 fields of the 17566 FADT if the table is too small to be a ACPI 2.0 table as claimed 17567 by the revision number. Although this is a BIOS bug, this is a 17568 case where the workaround is simple enough and with no side 17569 effects, so it seemed prudent to add it. A warning message is 17570 issued, however. 17571 17572 Implemented minimum size checks for the fixed-length ACPI tables - 17573 - the FADT and FACS, as well as consistency checks between the 17574 revision number and the table size. 17575 17576 Fixed a reported problem in the table override support where the 17577 new table pointer was incorrectly treated as a physical address 17578 instead of a logical address. 17579 17580 Eliminated the use of the AE_AML_ERROR exception and replaced it 17581 with more descriptive codes. 17582 17583 Fixed a problem where an exception would occur if an ASL Field was 17584 defined with no named Field Units underneath it (used by some 17585 index fields). 17586 17587 Code and Data Size: Current core subsystem library sizes are shown 17588 below. These are the code and data sizes for the acpica.lib 17589 produced by the Microsoft Visual C++ 6.0 compiler, and these 17590 values do not include any ACPI driver or OSPM code. The debug 17591 version of the code includes the debug output trace mechanism and 17592 has a larger code and data size. Note that these values will vary 17593 depending on the efficiency of the compiler and the compiler 17594 options used during generation. 17595 17596 Previous Release 17597 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 17598 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 17599 Current Release: 17600 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 17601 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 17602 17603 17604 17605 2) Linux 17606 17607 Much work done on ACPI init (MADT and PCI IRQ routing support). 17608 (Paul D. and Dominik Brodowski) 17609 17610 Fix PCI IRQ-related panic on boot (Sam Revitch) 17611 17612 Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno) 17613 17614 Fix "MHz" typo (Dominik Brodowski) 17615 17616 Fix RTC year 2000 issue (Dominik Brodowski) 17617 17618 Preclude multiple button proc entries (Eric Brunet) 17619 17620 Moved arch-specific code out of include/platform/aclinux.h 17621 17622 3) iASL Compiler Version X2044: 17623 17624 Implemented error checking for the string used in the EISAID macro 17625 (Usually used in the definition of the _HID object.) The code now 17626 strictly enforces the PnP format - exactly 7 characters, 3 17627 uppercase letters and 4 hex digits. 17628 17629 If a raw string is used in the definition of the _HID object 17630 (instead of the EISAID macro), the string must contain all 17631 alphanumeric characters (e.g., "*PNP0011" is not allowed because 17632 of the asterisk.) 17633 17634 Implemented checking for invalid use of ACPI reserved names for 17635 most of the name creation operators (Name, Device, Event, Mutex, 17636 OperationRegion, PowerResource, Processor, and ThermalZone.) 17637 Previously, this check was only performed for control methods. 17638 17639 Implemented an additional check on the Name operator to emit an 17640 error if a reserved name that must be implemented in ASL as a 17641 control method is used. We know that a reserved name must be a 17642 method if it is defined with input arguments. 17643 17644 The warning emitted when a namespace object reference is not found 17645 during the cross reference phase has been changed into an error. 17646 The "External" directive should be used for names defined in other 17647 modules. 17648 17649 17650 4) Tools and Utilities 17651 17652 The 16-bit tools (adump16 and aexec16) have been regenerated and 17653 tested. 17654 17655 Fixed a problem with the output of both acpidump and adump16 where 17656 the indentation of closing parentheses and brackets was not 17657 17658 aligned properly with the parent block. 17659 17660 17661 ---------------------------------------- 17662 03 May 2002. Summary of changes for this release. 17663 17664 17665 1) ACPI CA Core Subsystem Version 20020503: 17666 17667 Added support a new OSL interface that allows the host operating 17668 17669 system software to override the DSDT found in the firmware - 17670 AcpiOsTableOverride. With this interface, the OSL can examine the 17671 version of the firmware DSDT and replace it with a different one 17672 if desired. 17673 17674 Added new external interfaces for accessing ACPI registers from 17675 device drivers and other system software - AcpiGetRegister and 17676 AcpiSetRegister. This was simply an externalization of the 17677 existing AcpiHwBitRegister interfaces. 17678 17679 Fixed a regression introduced in the previous build where the 17680 ASL/AML CreateField operator always returned an error, 17681 "destination must be a NS Node". 17682 17683 Extended the maximum time (before failure) to successfully enable 17684 ACPI mode to 3 seconds. 17685 17686 Code and Data Size: Current core subsystem library sizes are shown 17687 below. These are the code and data sizes for the acpica.lib 17688 produced by the Microsoft Visual C++ 6.0 compiler, and these 17689 values do not include any ACPI driver or OSPM code. The debug 17690 version of the code includes the debug output trace mechanism and 17691 has a larger code and data size. Note that these values will vary 17692 depending on the efficiency of the compiler and the compiler 17693 options used during generation. 17694 17695 Previous Release 17696 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 17697 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 17698 Current Release: 17699 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 17700 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 17701 17702 17703 2) Linux 17704 17705 Enhanced ACPI init code for SMP. We are now fully MPS and $PIR- 17706 free. While 3 out of 4 of our in-house systems work fine, the last 17707 one still hangs when testing the LAPIC timer. 17708 17709 Renamed many files in 2.5 kernel release to omit "acpi_" from the 17710 name. 17711 17712 Added warning on boot for Presario 711FR. 17713 17714 Sleep improvements (Pavel Machek) 17715 17716 ACPI can now be built without CONFIG_PCI enabled. 17717 17718 IA64: Fixed memory map functions (JI Lee) 17719 17720 17721 3) iASL Compiler Version X2043: 17722 17723 Added support to allow the compiler to be integrated into the MS 17724 VC++ development environment for one-button compilation of single 17725 files or entire projects -- with error-to-source-line mapping. 17726 17727 Implemented support for compile-time constant folding for the 17728 Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0 17729 specification. This allows the ASL writer to use expressions 17730 instead of Integer/Buffer/String constants in terms that must 17731 evaluate to constants at compile time and will also simplify the 17732 emitted AML in any such sub-expressions that can be folded 17733 (evaluated at compile-time.) This increases the size of the 17734 compiler significantly because a portion of the ACPI CA AML 17735 interpreter is included within the compiler in order to pre- 17736 evaluate constant expressions. 17737 17738 17739 Fixed a problem with the "Unicode" ASL macro that caused the 17740 compiler to fault. (This macro is used in conjunction with the 17741 _STR reserved name.) 17742 17743 Implemented an AML opcode optimization to use the Zero, One, and 17744 Ones opcodes where possible to further reduce the size of integer 17745 constants and thus reduce the overall size of the generated AML 17746 code. 17747 17748 Implemented error checking for new reserved terms for ACPI version 17749 2.0A. 17750 17751 Implemented the -qr option to display the current list of ACPI 17752 reserved names known to the compiler. 17753 17754 Implemented the -qc option to display the current list of ASL 17755 operators that are allowed within constant expressions and can 17756 therefore be folded at compile time if the operands are constants. 17757 17758 17759 4) Documentation 17760 17761 Updated the Programmer's Reference for new interfaces, data types, 17762 and memory allocation model options. 17763 17764 Updated the iASL Compiler User Reference to apply new format and 17765 add information about new features and options. 17766 17767 ---------------------------------------- 17768 19 April 2002. Summary of changes for this release. 17769 17770 1) ACPI CA Core Subsystem Version 20020419: 17771 17772 The source code base for the Core Subsystem has been completely 17773 cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit 17774 versions. The Lint option files used are included in the 17775 /acpi/generate/lint directory. 17776 17777 Implemented enhanced status/error checking across the entire 17778 Hardware manager subsystem. Any hardware errors (reported from 17779 the OSL) are now bubbled up and will abort a running control 17780 method. 17781 17782 17783 Fixed a problem where the per-ACPI-table integer width (32 or 64) 17784 was stored only with control method nodes, causing a fault when 17785 non-control method code was executed during table loading. The 17786 solution implemented uses a global variable to indicate table 17787 width across the entire ACPI subsystem. Therefore, ACPI CA does 17788 not support mixed integer widths across different ACPI tables 17789 (DSDT, SSDT). 17790 17791 Fixed a problem where NULL extended fields (X fields) in an ACPI 17792 2.0 ACPI FADT caused the table load to fail. Although the 17793 existing ACPI specification is a bit fuzzy on this topic, the new 17794 behavior is to fall back on a ACPI 1.0 field if the corresponding 17795 ACPI 2.0 X field is zero (even though the table revision indicates 17796 a full ACPI 2.0 table.) The ACPI specification will be updated to 17797 clarify this issue. 17798 17799 Fixed a problem with the SystemMemory operation region handler 17800 where memory was always accessed byte-wise even if the AML- 17801 specified access width was larger than a byte. This caused 17802 problems on systems with memory-mapped I/O. Memory is now 17803 accessed with the width specified. On systems that do not support 17804 non-aligned transfers, a check is made to guarantee proper address 17805 alignment before proceeding in order to avoid an AML-caused 17806 alignment fault within the kernel. 17807 17808 17809 Fixed a problem with the ExtendedIrq resource where only one byte 17810 of the 4-byte Irq field was extracted. 17811 17812 Fixed the AcpiExDigitsNeeded() procedure to support _UID. This 17813 function was out of date and required a rewrite. 17814 17815 Code and Data Size: Current core subsystem library sizes are shown 17816 below. These are the code and data sizes for the acpica.lib 17817 produced by the Microsoft Visual C++ 6.0 compiler, and these 17818 values do not include any ACPI driver or OSPM code. The debug 17819 version of the code includes the debug output trace mechanism and 17820 has a larger code and data size. Note that these values will vary 17821 depending on the efficiency of the compiler and the compiler 17822 options used during generation. 17823 17824 Previous Release 17825 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 17826 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 17827 Current Release: 17828 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 17829 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 17830 17831 17832 2) Linux 17833 17834 PCI IRQ routing fixes (Dominik Brodowski) 17835 17836 17837 3) iASL Compiler Version X2042: 17838 17839 Implemented an additional compile-time error check for a field 17840 unit whose size + minimum access width would cause a run-time 17841 access beyond the end-of-region. Previously, only the field size 17842 itself was checked. 17843 17844 The Core subsystem and iASL compiler now share a common parse 17845 object in preparation for compile-time evaluation of the type 17846 3/4/5 ASL operators. 17847 17848 17849 ---------------------------------------- 17850 Summary of changes for this release: 03_29_02 17851 17852 1) ACPI CA Core Subsystem Version 20020329: 17853 17854 Implemented support for late evaluation of TermArg operands to 17855 Buffer and Package objects. This allows complex expressions to be 17856 used in the declarations of these object types. 17857 17858 Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI 17859 1.0, if the field was larger than 32 bits, it was returned as a 17860 buffer - otherwise it was returned as an integer. In ACPI 2.0, 17861 the field is returned as a buffer only if the field is larger than 17862 64 bits. The TableRevision is now considered when making this 17863 conversion to avoid incompatibility with existing ASL code. 17864 17865 Implemented logical addressing for AcpiOsGetRootPointer. This 17866 allows an RSDP with either a logical or physical address. With 17867 this support, the host OS can now override all ACPI tables with 17868 one logical RSDP. Includes implementation of "typed" pointer 17869 support to allow a common data type for both physical and logical 17870 pointers internally. This required a change to the 17871 AcpiOsGetRootPointer interface. 17872 17873 Implemented the use of ACPI 2.0 Generic Address Structures for all 17874 GPE, Fixed Event, and PM Timer I/O. This allows the use of memory 17875 mapped I/O for these ACPI features. 17876 17877 Initialization now ignores not only non-required tables (All 17878 tables other than the FADT, FACS, DSDT, and SSDTs), but also does 17879 not validate the table headers of unrecognized tables. 17880 17881 Fixed a problem where a notify handler could only be 17882 installed/removed on an object of type Device. All "notify" 17883 17884 objects are now supported -- Devices, Processor, Power, and 17885 Thermal. 17886 17887 Removed most verbosity from the ACPI_DB_INFO debug level. Only 17888 critical information is returned when this debug level is enabled. 17889 17890 Code and Data Size: Current core subsystem library sizes are shown 17891 below. These are the code and data sizes for the acpica.lib 17892 produced by the Microsoft Visual C++ 6.0 compiler, and these 17893 values do not include any ACPI driver or OSPM code. The debug 17894 version of the code includes the debug output trace mechanism and 17895 has a larger code and data size. Note that these values will vary 17896 depending on the efficiency of the compiler and the compiler 17897 options used during generation. 17898 17899 Previous Release 17900 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 17901 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 17902 Current Release: 17903 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 17904 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 17905 17906 17907 2) Linux: 17908 17909 The processor driver (acpi_processor.c) now fully supports ACPI 17910 2.0-based processor performance control (e.g. Intel(R) 17911 SpeedStep(TM) technology) Note that older laptops that only have 17912 the Intel "applet" interface are not supported through this. The 17913 'limit' and 'performance' interface (/proc) are fully functional. 17914 [Note that basic policy for controlling performance state 17915 transitions will be included in the next version of ospmd.] The 17916 idle handler was modified to more aggressively use C2, and PIIX4 17917 errata handling underwent a complete overhaul (big thanks to 17918 Dominik Brodowski). 17919 17920 Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR- 17921 based devices in the ACPI namespace are now dynamically bound 17922 (associated) with their PCI counterparts (e.g. PCI1->01:00.0). 17923 This allows, among other things, ACPI to resolve bus numbers for 17924 subordinate PCI bridges. 17925 17926 Enhanced PCI IRQ routing to get the proper bus number for _PRT 17927 entries defined underneath PCI bridges. 17928 17929 Added IBM 600E to bad bios list due to invalid _ADR value for 17930 PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing. 17931 17932 In the process of adding full MADT support (e.g. IOAPIC) for IA32 17933 (acpi.c, mpparse.c) -- stay tuned. 17934 17935 Added back visual differentiation between fixed-feature and 17936 control-method buttons in dmesg. Buttons are also subtyped (e.g. 17937 button/power/PWRF) to simplify button identification. 17938 17939 We no longer use -Wno-unused when compiling debug. Please ignore 17940 any "_THIS_MODULE defined but not used" messages. 17941 17942 Can now shut down the system using "magic sysrq" key. 17943 17944 17945 3) iASL Compiler version 2041: 17946 17947 Fixed a problem where conversion errors for hex/octal/decimal 17948 constants were not reported. 17949 17950 Implemented a fix for the General Register template Address field. 17951 This field was 8 bits when it should be 64. 17952 17953 Fixed a problem where errors/warnings were no longer being emitted 17954 within the listing output file. 17955 17956 Implemented the ACPI 2.0A restriction on ACPI Table Signatures to 17957 exactly 4 characters, alphanumeric only. 17958 17959 17960 17961 17962 ---------------------------------------- 17963 Summary of changes for this release: 03_08_02 17964 17965 17966 1) ACPI CA Core Subsystem Version 20020308: 17967 17968 Fixed a problem with AML Fields where the use of the "AccessAny" 17969 keyword could cause an interpreter error due to attempting to read 17970 or write beyond the end of the parent Operation Region. 17971 17972 Fixed a problem in the SystemMemory Operation Region handler where 17973 an attempt was made to map memory beyond the end of the region. 17974 This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY" 17975 errors on some Linux systems. 17976 17977 Fixed a problem where the interpreter/namespace "search to root" 17978 algorithm was not functioning for some object types. Relaxed the 17979 internal restriction on the search to allow upsearches for all 17980 external object types as well as most internal types. 17981 17982 17983 2) Linux: 17984 17985 We now use safe_halt() macro versus individual calls to sti | hlt. 17986 17987 Writing to the processor limit interface should now work. "echo 1" 17988 will increase the limit, 2 will decrease, and 0 will reset to the 17989 17990 default. 17991 17992 17993 3) ASL compiler: 17994 17995 Fixed segfault on Linux version. 17996 17997 17998 ---------------------------------------- 17999 Summary of changes for this release: 02_25_02 18000 18001 1) ACPI CA Core Subsystem: 18002 18003 18004 Fixed a problem where the GPE bit masks were not initialized 18005 properly, causing erratic GPE behavior. 18006 18007 Implemented limited support for multiple calling conventions. The 18008 code can be generated with either the VPL (variable parameter 18009 list, or "C") convention, or the FPL (fixed parameter list, or 18010 "Pascal") convention. The core subsystem is about 3.4% smaller 18011 when generated with FPL. 18012 18013 18014 2) Linux 18015 18016 Re-add some /proc/acpi/event functionality that was lost during 18017 the rewrite 18018 18019 Resolved issue with /proc events for fixed-feature buttons showing 18020 up as the system device. 18021 18022 Fixed checks on C2/C3 latencies to be inclusive of maximum values. 18023 18024 Replaced AE_ERRORs in acpi_osl.c with more specific error codes. 18025 18026 Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi" 18027 18028 Fixed limit interface & usage to fix bugs with passive cooling 18029 hysterisis. 18030 18031 Restructured PRT support. 18032 18033 18034 ---------------------------------------- 18035 Summary of changes for this label: 02_14_02 18036 18037 18038 1) ACPI CA Core Subsystem: 18039 18040 Implemented support in AcpiLoadTable to allow loading of FACS and 18041 FADT tables. 18042 18043 Support for the now-obsolete interim 0.71 64-bit ACPI tables has 18044 been removed. All 64-bit platforms should be migrated to the ACPI 18045 2.0 tables. The actbl71.h header has been removed from the source 18046 tree. 18047 18048 All C macros defined within the subsystem have been prefixed with 18049 "ACPI_" to avoid collision with other system include files. 18050 18051 Removed the return value for the two AcpiOsPrint interfaces, since 18052 it is never used and causes lint warnings for ignoring the return 18053 value. 18054 18055 Added error checking to all internal mutex acquire and release 18056 calls. Although a failure from one of these interfaces is 18057 probably a fatal system error, these checks will cause the 18058 immediate abort of the currently executing method or interface. 18059 18060 Fixed a problem where the AcpiSetCurrentResources interface could 18061 fault. This was a side effect of the deployment of the new memory 18062 allocation model. 18063 18064 Fixed a couple of problems with the Global Lock support introduced 18065 in the last major build. The "common" (1.0/2.0) internal FACS was 18066 being overwritten with the FACS signature and clobbering the 18067 Global Lock pointer. Also, the actual firmware FACS was being 18068 unmapped after construction of the "common" FACS, preventing 18069 access to the actual Global Lock field within it. The "common" 18070 internal FACS is no longer installed as an actual ACPI table; it 18071 is used simply as a global. 18072 18073 Code and Data Size: Current core subsystem library sizes are shown 18074 below. These are the code and data sizes for the acpica.lib 18075 produced by the Microsoft Visual C++ 6.0 compiler, and these 18076 values do not include any ACPI driver or OSPM code. The debug 18077 version of the code includes the debug output trace mechanism and 18078 has a larger code and data size. Note that these values will vary 18079 depending on the efficiency of the compiler and the compiler 18080 options used during generation. 18081 18082 Previous Release (02_07_01) 18083 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 18084 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 18085 Current Release: 18086 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 18087 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 18088 18089 18090 2) Linux 18091 18092 Updated Linux-specific code for core macro and OSL interface 18093 changes described above. 18094 18095 Improved /proc/acpi/event. It now can be opened only once and has 18096 proper poll functionality. 18097 18098 Fixed and restructured power management (acpi_bus). 18099 18100 Only create /proc "view by type" when devices of that class exist. 18101 18102 Fixed "charging/discharging" bug (and others) in acpi_battery. 18103 18104 Improved thermal zone code. 18105 18106 18107 3) ASL Compiler, version X2039: 18108 18109 18110 Implemented the new compiler restriction on ASL String hex/octal 18111 escapes to non-null, ASCII values. An error results if an invalid 18112 value is used. (This will require an ACPI 2.0 specification 18113 change.) 18114 18115 AML object labels that are output to the optional C and ASM source 18116 are now prefixed with both the ACPI table signature and table ID 18117 to help guarantee uniqueness within a large BIOS project. 18118 18119 18120 ---------------------------------------- 18121 Summary of changes for this label: 02_01_02 18122 18123 1) ACPI CA Core Subsystem: 18124 18125 ACPI 2.0 support is complete in the entire Core Subsystem and the 18126 ASL compiler. All new ACPI 2.0 operators are implemented and all 18127 other changes for ACPI 2.0 support are complete. With 18128 simultaneous code and data optimizations throughout the subsystem, 18129 ACPI 2.0 support has been implemented with almost no additional 18130 cost in terms of code and data size. 18131 18132 Implemented a new mechanism for allocation of return buffers. If 18133 the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will 18134 be allocated on behalf of the caller. Consolidated all return 18135 buffer validation and allocation to a common procedure. Return 18136 buffers will be allocated via the primary OSL allocation interface 18137 since it appears that a separate pool is not needed by most users. 18138 If a separate pool is required for these buffers, the caller can 18139 still use the original mechanism and pre-allocate the buffer(s). 18140 18141 Implemented support for string operands within the DerefOf 18142 operator. 18143 18144 Restructured the Hardware and Event managers to be table driven, 18145 simplifying the source code and reducing the amount of generated 18146 code. 18147 18148 Split the common read/write low-level ACPI register bitfield 18149 procedure into a separate read and write, simplifying the code 18150 considerably. 18151 18152 Obsoleted the AcpiOsCallocate OSL interface. This interface was 18153 used only a handful of times and didn't have enough critical mass 18154 for a separate interface. Replaced with a common calloc procedure 18155 in the core. 18156 18157 Fixed a reported problem with the GPE number mapping mechanism 18158 that allows GPE1 numbers to be non-contiguous with GPE0. 18159 Reorganized the GPE information and shrunk a large array that was 18160 originally large enough to hold info for all possible GPEs (256) 18161 to simply large enough to hold all GPEs up to the largest GPE 18162 number on the machine. 18163 18164 Fixed a reported problem with resource structure alignment on 64- 18165 bit platforms. 18166 18167 Changed the AcpiEnableEvent and AcpiDisableEvent external 18168 interfaces to not require any flags for the common case of 18169 enabling/disabling a GPE. 18170 18171 Implemented support to allow a "Notify" on a Processor object. 18172 18173 Most TBDs in comments within the source code have been resolved 18174 and eliminated. 18175 18176 18177 Fixed a problem in the interpreter where a standalone parent 18178 prefix (^) was not handled correctly in the interpreter and 18179 debugger. 18180 18181 Removed obsolete and unnecessary GPE save/restore code. 18182 18183 Implemented Field support in the ASL Load operator. This allows a 18184 table to be loaded from a named field, in addition to loading a 18185 table directly from an Operation Region. 18186 18187 Implemented timeout and handle support in the external Global Lock 18188 interfaces. 18189 18190 Fixed a problem in the AcpiDump utility where pathnames were no 18191 longer being generated correctly during the dump of named objects. 18192 18193 Modified the AML debugger to give a full display of if/while 18194 predicates instead of just one AML opcode at a time. (The 18195 predicate can have several nested ASL statements.) The old method 18196 was confusing during single stepping. 18197 18198 Code and Data Size: Current core subsystem library sizes are shown 18199 below. These are the code and data sizes for the acpica.lib 18200 produced by the Microsoft Visual C++ 6.0 compiler, and these 18201 values do not include any ACPI driver or OSPM code. The debug 18202 version of the code includes the debug output trace mechanism and 18203 has a larger code and data size. Note that these values will vary 18204 depending on the efficiency of the compiler and the compiler 18205 options used during generation. 18206 18207 Previous Release (12_18_01) 18208 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 18209 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 18210 Current Release: 18211 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 18212 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 18213 18214 2) Linux 18215 18216 Implemented fix for PIIX reverse throttling errata (Processor 18217 driver) 18218 18219 Added new Limit interface (Processor and Thermal drivers) 18220 18221 New thermal policy (Thermal driver) 18222 18223 Many updates to /proc 18224 18225 Battery "low" event support (Battery driver) 18226 18227 Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers) 18228 18229 IA32 - IA64 initialization unification, no longer experimental 18230 18231 Menuconfig options redesigned 18232 18233 3) ASL Compiler, version X2037: 18234 18235 Implemented several new output features to simplify integration of 18236 AML code into firmware: 1) Output the AML in C source code with 18237 labels for each named ASL object. The original ASL source code 18238 is interleaved as C comments. 2) Output the AML in ASM source code 18239 with labels and interleaved ASL source. 3) Output the AML in 18240 raw hex table form, in either C or ASM. 18241 18242 Implemented support for optional string parameters to the 18243 LoadTable operator. 18244 18245 Completed support for embedded escape sequences within string 18246 literals. The compiler now supports all single character escapes 18247 as well as the Octal and Hex escapes. Note: the insertion of a 18248 null byte into a string literal (via the hex/octal escape) causes 18249 the string to be immediately terminated. A warning is issued. 18250 18251 Fixed a problem where incorrect AML was generated for the case 18252 where an ASL namepath consists of a single parent prefix ( 18253 18254 ) with no trailing name segments. 18255 18256 The compiler has been successfully generated with a 64-bit C 18257 compiler. 18258 18259 18260 18261 18262 ---------------------------------------- 18263 Summary of changes for this label: 12_18_01 18264 18265 1) Linux 18266 18267 Enhanced blacklist with reason and severity fields. Any table's 18268 signature may now be used to identify a blacklisted system. 18269 18270 Call _PIC control method to inform the firmware which interrupt 18271 model the OS is using. Turn on any disabled link devices. 18272 18273 Cleaned up busmgr /proc error handling (Andreas Dilger) 18274 18275 2) ACPI CA Core Subsystem: 18276 18277 Implemented ACPI 2.0 semantics for the "Break" operator (Exit from 18278 while loop) 18279 18280 Completed implementation of the ACPI 2.0 "Continue", 18281 "ConcatenateResTemplate", "DataTableRegion", and "LoadTable" 18282 operators. All new ACPI 2.0 operators are now implemented in both 18283 the ASL compiler and the AML interpreter. The only remaining ACPI 18284 2.0 task is support for the String data type in the DerefOf 18285 operator. Fixed a problem with AcquireMutex where the status code 18286 was lost if the caller had to actually wait for the mutex. 18287 18288 Increased the maximum ASL Field size from 64K bits to 4G bits. 18289 18290 Completed implementation of the external Global Lock interfaces -- 18291 AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and 18292 Handler parameters were added. 18293 18294 Completed another pass at removing warnings and issues when 18295 compiling with 64-bit compilers. The code now compiles cleanly 18296 with the Intel 64-bit C/C++ compiler. Most notably, the pointer 18297 add and subtract (diff) macros have changed considerably. 18298 18299 18300 Created and deployed a new ACPI_SIZE type that is 64-bits wide on 18301 64-bit platforms, 32-bits on all others. This type is used 18302 wherever memory allocation and/or the C sizeof() operator is used, 18303 and affects the OSL memory allocation interfaces AcpiOsAllocate 18304 and AcpiOsCallocate. 18305 18306 Implemented sticky user breakpoints in the AML debugger. 18307 18308 Code and Data Size: Current core subsystem library sizes are shown 18309 below. These are the code and data sizes for the acpica.lib 18310 produced by the Microsoft Visual C++ 6.0 compiler, and these 18311 values do not include any ACPI driver or OSPM code. The debug 18312 version of the code includes the debug output trace mechanism and 18313 has a larger code and data size. Note that these values will vary 18314 depending on the efficiency of the compiler and the compiler 18315 options used during generation. 18316 18317 Previous Release (12_05_01) 18318 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 18319 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 18320 Current Release: 18321 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 18322 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 18323 18324 3) ASL Compiler, version X2034: 18325 18326 Now checks for (and generates an error if detected) the use of a 18327 Break or Continue statement without an enclosing While statement. 18328 18329 18330 Successfully generated the compiler with the Intel 64-bit C 18331 compiler. 18332 18333 ---------------------------------------- 18334 Summary of changes for this label: 12_05_01 18335 18336 1) ACPI CA Core Subsystem: 18337 18338 The ACPI 2.0 CopyObject operator is fully implemented. This 18339 operator creates a new copy of an object (and is also used to 18340 bypass the "implicit conversion" mechanism of the Store operator.) 18341 18342 The ACPI 2.0 semantics for the SizeOf operator are fully 18343 implemented. The change is that performing a SizeOf on a 18344 reference object causes an automatic dereference of the object to 18345 the actual value before the size is evaluated. This behavior was 18346 undefined in ACPI 1.0. 18347 18348 The ACPI 2.0 semantics for the Extended IRQ resource descriptor 18349 have been implemented. The interrupt polarity and mode are now 18350 independently set. 18351 18352 Fixed a problem where ASL Constants (Zero, One, Ones, Revision) 18353 appearing in Package objects were not properly converted to 18354 integers when the internal Package was converted to an external 18355 object (via the AcpiEvaluateObject interface.) 18356 18357 Fixed a problem with the namespace object deletion mechanism for 18358 objects created by control methods. There were two parts to this 18359 problem: 1) Objects created during the initialization phase method 18360 parse were not being deleted, and 2) The object owner ID mechanism 18361 to track objects was broken. 18362 18363 Fixed a problem where the use of the ASL Scope operator within a 18364 control method would result in an invalid opcode exception. 18365 18366 Fixed a problem introduced in the previous label where the buffer 18367 length required for the _PRT structure was not being returned 18368 correctly. 18369 18370 Code and Data Size: Current core subsystem library sizes are shown 18371 below. These are the code and data sizes for the acpica.lib 18372 produced by the Microsoft Visual C++ 6.0 compiler, and these 18373 values do not include any ACPI driver or OSPM code. The debug 18374 version of the code includes the debug output trace mechanism and 18375 has a larger code and data size. Note that these values will vary 18376 depending on the efficiency of the compiler and the compiler 18377 options used during generation. 18378 18379 Previous Release (11_20_01) 18380 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 18381 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 18382 18383 Current Release: 18384 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 18385 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 18386 18387 2) Linux: 18388 18389 Updated all files to apply cleanly against 2.4.16. 18390 18391 Added basic PCI Interrupt Routing Table (PRT) support for IA32 18392 (acpi_pci.c), and unified the PRT code for IA32 and IA64. This 18393 version supports both static and dynamic PRT entries, but dynamic 18394 entries are treated as if they were static (not yet 18395 reconfigurable). Architecture- specific code to use this data is 18396 absent on IA32 but should be available shortly. 18397 18398 Changed the initialization sequence to start the ACPI interpreter 18399 (acpi_init) prior to initialization of the PCI driver (pci_init) 18400 in init/main.c. This ordering is required to support PRT and 18401 facilitate other (future) enhancement. A side effect is that the 18402 ACPI bus driver and certain device drivers can no longer be loaded 18403 as modules. 18404 18405 Modified the 'make menuconfig' options to allow PCI Interrupt 18406 Routing support to be included without the ACPI Bus and other 18407 device drivers. 18408 18409 3) ASL Compiler, version X2033: 18410 18411 Fixed some issues with the use of the new CopyObject and 18412 DataTableRegion operators. Both are fully functional. 18413 18414 ---------------------------------------- 18415 Summary of changes for this label: 11_20_01 18416 18417 20 November 2001. Summary of changes for this release. 18418 18419 1) ACPI CA Core Subsystem: 18420 18421 Updated Index support to match ACPI 2.0 semantics. Storing a 18422 Integer, String, or Buffer to an Index of a Buffer will store only 18423 the least-significant byte of the source to the Indexed buffer 18424 byte. Multiple writes are not performed. 18425 18426 Fixed a problem where the access type used in an AccessAs ASL 18427 operator was not recorded correctly into the field object. 18428 18429 Fixed a problem where ASL Event objects were created in a 18430 signalled state. Events are now created in an unsignalled state. 18431 18432 The internal object cache is now purged after table loading and 18433 initialization to reduce the use of dynamic kernel memory -- on 18434 the assumption that object use is greatest during the parse phase 18435 of the entire table (versus the run-time use of individual control 18436 methods.) 18437 18438 ACPI 2.0 variable-length packages are now fully operational. 18439 18440 Code and Data Size: Code and Data optimizations have permitted new 18441 feature development with an actual reduction in the library size. 18442 Current core subsystem library sizes are shown below. These are 18443 the code and data sizes for the acpica.lib produced by the 18444 Microsoft Visual C++ 6.0 compiler, and these values do not include 18445 any ACPI driver or OSPM code. The debug version of the code 18446 includes the debug output trace mechanism and has a larger code 18447 and data size. Note that these values will vary depending on the 18448 efficiency of the compiler and the compiler options used during 18449 generation. 18450 18451 Previous Release (11_09_01): 18452 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 18453 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 18454 18455 Current Release: 18456 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 18457 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 18458 18459 2) Linux: 18460 18461 Enhanced the ACPI boot-time initialization code to allow the use 18462 of Local APIC tables for processor enumeration on IA-32, and to 18463 pave the way for a fully MPS-free boot (on SMP systems) in the 18464 near future. This functionality replaces 18465 arch/i386/kernel/acpitables.c, which was introduced in an earlier 18466 2.4.15-preX release. To enable this feature you must add 18467 "acpi_boot=on" to the kernel command line -- see the help entry 18468 for CONFIG_ACPI_BOOT for more information. An IA-64 release is in 18469 the works... 18470 18471 Restructured the configuration options to allow boot-time table 18472 parsing support without inclusion of the ACPI Interpreter (and 18473 other) code. 18474 18475 NOTE: This release does not include fixes for the reported events, 18476 power-down, and thermal passive cooling issues (coming soon). 18477 18478 3) ASL Compiler: 18479 18480 Added additional typechecking for Fields within restricted access 18481 Operation Regions. All fields within EC and CMOS regions must be 18482 declared with ByteAcc. All fields within SMBus regions must be 18483 declared with the BufferAcc access type. 18484 18485 Fixed a problem where the listing file output of control methods 18486 no longer interleaved the actual AML code with the ASL source 18487 code. 18488 18489 18490 18491 18492 ---------------------------------------- 18493 Summary of changes for this label: 11_09_01 18494 18495 1) ACPI CA Core Subsystem: 18496 18497 Implemented ACPI 2.0-defined support for writes to fields with a 18498 Buffer, String, or Integer source operand that is smaller than the 18499 target field. In these cases, the source operand is zero-extended 18500 to fill the target field. 18501 18502 Fixed a problem where a Field starting bit offset (within the 18503 parent operation region) was calculated incorrectly if the 18504 18505 alignment of the field differed from the access width. This 18506 affected CreateWordField, CreateDwordField, CreateQwordField, and 18507 possibly other fields that use the "AccessAny" keyword. 18508 18509 Fixed a problem introduced in the 11_02_01 release where indirect 18510 stores through method arguments did not operate correctly. 18511 18512 2) Linux: 18513 18514 Implemented boot-time ACPI table parsing support 18515 (CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code 18516 facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than 18517 legacy BIOS interfaces (e.g. MPS) for the configuration of system 18518 processors, memory, and interrupts during setup_arch(). Note that 18519 this patch does not include the required architecture-specific 18520 changes required to apply this information -- subsequent patches 18521 will be posted for both IA32 and IA64 to achieve this. 18522 18523 Added low-level sleep support for IA32 platforms, courtesy of Pat 18524 Mochel. This allows IA32 systems to transition to/from various 18525 sleeping states (e.g. S1, S3), although the lack of a centralized 18526 driver model and power-manageable drivers will prevent its 18527 (successful) use on most systems. 18528 18529 Revamped the ACPI 'menuconfig' layout: created new "ACPI Support" 18530 submenu, unified IA32 and IA64 options, added new "Boot using ACPI 18531 tables" option, etc. 18532 18533 Increased the default timeout for the EC driver from 1ms to 10ms 18534 (1000 cycles of 10us) to try to address AE_TIME errors during EC 18535 transactions. 18536 18537 ---------------------------------------- 18538 Summary of changes for this label: 11_02_01 18539 18540 1) ACPI CA Core Subsystem: 18541 18542 ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access 18543 (QWordAcc keyword). All ACPI 2.0 64-bit support is now 18544 implemented. 18545 18546 OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required 18547 changes to support ACPI 2.0 Qword field access. Read/Write 18548 PciConfiguration(), Read/Write Memory(), and Read/Write Port() now 18549 accept an ACPI_INTEGER (64 bits) as the value parameter. Also, 18550 the value parameter for the address space handler interface is now 18551 an ACPI_INTEGER. OSL implementations of these interfaces must now 18552 handle the case where the Width parameter is 64. 18553 18554 Index Fields: Fixed a problem where unaligned bit assembly and 18555 disassembly for IndexFields was not supported correctly. 18556 18557 Index and Bank Fields: Nested Index and Bank Fields are now 18558 supported. During field access, a check is performed to ensure 18559 that the value written to an Index or Bank register is not out of 18560 the range of the register. The Index (or Bank) register is 18561 written before each access to the field data. Future support will 18562 include allowing individual IndexFields to be wider than the 18563 DataRegister width. 18564 18565 Fields: Fixed a problem where the AML interpreter was incorrectly 18566 attempting to write beyond the end of a Field/OpRegion. This was 18567 a boundary case that occurred when a DWORD field was written to a 18568 BYTE access OpRegion, forcing multiple writes and causing the 18569 interpreter to write one datum too many. 18570 18571 Fields: Fixed a problem with Field/OpRegion access where the 18572 starting bit address of a field was incorrectly calculated if the 18573 current access type was wider than a byte (WordAcc, DwordAcc, or 18574 QwordAcc). 18575 18576 Fields: Fixed a problem where forward references to individual 18577 FieldUnits (individual Field names within a Field definition) were 18578 not resolved during the AML table load. 18579 18580 Fields: Fixed a problem where forward references from a Field 18581 definition to the parent Operation Region definition were not 18582 resolved during the AML table load. 18583 18584 Fields: Duplicate FieldUnit names within a scope are now detected 18585 during AML table load. 18586 18587 Acpi Interfaces: Fixed a problem where the AcpiGetName() interface 18588 returned an incorrect name for the root node. 18589 18590 Code and Data Size: Code and Data optimizations have permitted new 18591 feature development with an actual reduction in the library size. 18592 Current core subsystem library sizes are shown below. These are 18593 the code and data sizes for the acpica.lib produced by the 18594 Microsoft Visual C++ 6.0 compiler, and these values do not include 18595 any ACPI driver or OSPM code. The debug version of the code 18596 includes the debug output trace mechanism and has a larger code 18597 and data size. Note that these values will vary depending on the 18598 efficiency of the compiler and the compiler options used during 18599 generation. 18600 18601 Previous Release (10_18_01): 18602 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 18603 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 18604 18605 Current Release: 18606 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 18607 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 18608 18609 2) Linux: 18610 18611 Improved /proc processor output (Pavel Machek) Re-added 18612 MODULE_LICENSE("GPL") to all modules. 18613 18614 3) ASL Compiler version X2030: 18615 18616 Duplicate FieldUnit names within a scope are now detected and 18617 flagged as errors. 18618 18619 4) Documentation: 18620 18621 Programmer Reference updated to reflect OSL and address space 18622 handler interface changes described above. 18623 18624 ---------------------------------------- 18625 Summary of changes for this label: 10_18_01 18626 18627 ACPI CA Core Subsystem: 18628 18629 Fixed a problem with the internal object reference count mechanism 18630 that occasionally caused premature object deletion. This resolves 18631 all of the outstanding problem reports where an object is deleted 18632 in the middle of an interpreter evaluation. Although this problem 18633 only showed up in rather obscure cases, the solution to the 18634 problem involved an adjustment of all reference counts involving 18635 objects attached to namespace nodes. 18636 18637 Fixed a problem with Field support in the interpreter where 18638 writing to an aligned field whose length is an exact multiple (2 18639 or greater) of the field access granularity would cause an attempt 18640 to write beyond the end of the field. 18641 18642 The top level AML opcode execution functions within the 18643 interpreter have been renamed with a more meaningful and 18644 consistent naming convention. The modules exmonad.c and 18645 exdyadic.c were eliminated. New modules are exoparg1.c, 18646 exoparg2.c, exoparg3.c, and exoparg6.c. 18647 18648 Support for the ACPI 2.0 "Mid" ASL operator has been implemented. 18649 18650 Fixed a problem where the AML debugger was causing some internal 18651 objects to not be deleted during subsystem termination. 18652 18653 Fixed a problem with the external AcpiEvaluateObject interface 18654 where the subsystem would fault if the named object to be 18655 evaluated referred to a constant such as Zero, Ones, etc. 18656 18657 Fixed a problem with IndexFields and BankFields where the 18658 subsystem would fault if the index, data, or bank registers were 18659 not defined in the same scope as the field itself. 18660 18661 Added printf format string checking for compilers that support 18662 this feature. Corrected more than 50 instances of issues with 18663 format specifiers within invocations of ACPI_DEBUG_PRINT 18664 throughout the core subsystem code. 18665 18666 The ASL "Revision" operator now returns the ACPI support level 18667 implemented in the core - the value "2" since the ACPI 2.0 support 18668 is more than 50% implemented. 18669 18670 Enhanced the output of the AML debugger "dump namespace" command 18671 to output in a more human-readable form. 18672 18673 Current core subsystem library code sizes are shown below. These 18674 18675 are the code and data sizes for the acpica.lib produced by the 18676 Microsoft Visual C++ 6.0 compiler, and these values do not include 18677 any ACPI driver or OSPM code. The debug version of the code 18678 includes the full debug trace mechanism -- leading to a much 18679 18680 larger code and data size. Note that these values will vary 18681 depending on the efficiency of the compiler and the compiler 18682 options used during generation. 18683 18684 Previous Label (09_20_01): 18685 Non-Debug Version: 65K Code, 5K Data, 70K Total 18686 Debug Version: 138K Code, 58K Data, 196K Total 18687 18688 This Label: 18689 18690 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 18691 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 18692 18693 Linux: 18694 18695 Implemented a "Bad BIOS Blacklist" to track machines that have 18696 known ASL/AML problems. 18697 18698 Enhanced the /proc interface for the thermal zone driver and added 18699 support for _HOT (the critical suspend trip point). The 'info' 18700 file now includes threshold/policy information, and allows setting 18701 of _SCP (cooling preference) and _TZP (polling frequency) values 18702 to the 'info' file. Examples: "echo tzp=5 > info" sets the polling 18703 frequency to 5 seconds, and "echo scp=1 > info" sets the cooling 18704 preference to the passive/quiet mode (if supported by the ASL). 18705 18706 Implemented a workaround for a gcc bug that resuted in an OOPs 18707 when loading the control method battery driver. 18708 18709 ---------------------------------------- 18710 Summary of changes for this label: 09_20_01 18711 18712 ACPI CA Core Subsystem: 18713 18714 The AcpiEnableEvent and AcpiDisableEvent interfaces have been 18715 modified to allow individual GPE levels to be flagged as wake- 18716 enabled (i.e., these GPEs are to remain enabled when the platform 18717 sleeps.) 18718 18719 The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now 18720 support wake-enabled GPEs. This means that upon entering the 18721 sleep state, all GPEs that are not wake-enabled are disabled. 18722 When leaving the sleep state, these GPEs are re-enabled. 18723 18724 A local double-precision divide/modulo module has been added to 18725 enhance portability to OS kernels where a 64-bit math library is 18726 not available. The new module is "utmath.c". 18727 18728 Several optimizations have been made to reduce the use of CPU 18729 stack. Originally over 2K, the maximum stack usage is now below 18730 2K at 1860 bytes (1.82k) 18731 18732 Fixed a problem with the AcpiGetFirmwareTable interface where the 18733 root table pointer was not mapped into a logical address properly. 18734 18735 Fixed a problem where a NULL pointer was being dereferenced in the 18736 interpreter code for the ASL Notify operator. 18737 18738 Fixed a problem where the use of the ASL Revision operator 18739 returned an error. This operator now returns the current version 18740 of the ACPI CA core subsystem. 18741 18742 Fixed a problem where objects passed as control method parameters 18743 to AcpiEvaluateObject were always deleted at method termination. 18744 However, these objects may end up being stored into the namespace 18745 by the called method. The object reference count mechanism was 18746 applied to these objects instead of a force delete. 18747 18748 Fixed a problem where static strings or buffers (contained in the 18749 AML code) that are declared as package elements within the ASL 18750 code could cause a fault because the interpreter would attempt to 18751 delete them. These objects are now marked with the "static 18752 object" flag to prevent any attempt to delete them. 18753 18754 Implemented an interpreter optimization to use operands directly 18755 from the state object instead of extracting the operands to local 18756 variables. This reduces stack use and code size, and improves 18757 performance. 18758 18759 The module exxface.c was eliminated as it was an unnecessary extra 18760 layer of code. 18761 18762 Current core subsystem library code sizes are shown below. These 18763 are the code and data sizes for the acpica.lib produced by the 18764 Microsoft Visual C++ 6.0 compiler, and these values do not include 18765 any ACPI driver or OSPM code. The debug version of the code 18766 includes the full debug trace mechanism -- leading to a much 18767 larger code and data size. Note that these values will vary 18768 depending on the efficiency of the compiler and the compiler 18769 options used during generation. 18770 18771 Non-Debug Version: 65K Code, 5K Data, 70K Total 18772 (Previously 69K) Debug Version: 138K Code, 58K Data, 196K 18773 Total (Previously 195K) 18774 18775 Linux: 18776 18777 Support for ACPI 2.0 64-bit integers has been added. All ACPI 18778 Integer objects are now 64 bits wide 18779 18780 All Acpi data types and structures are now in lower case. Only 18781 Acpi macros are upper case for differentiation. 18782 18783 Documentation: 18784 18785 Changes to the external interfaces as described above. 18786 18787 ---------------------------------------- 18788 Summary of changes for this label: 08_31_01 18789 18790 ACPI CA Core Subsystem: 18791 18792 A bug with interpreter implementation of the ASL Divide operator 18793 was found and fixed. The implicit function return value (not the 18794 explicit store operands) was returning the remainder instead of 18795 the quotient. This was a longstanding bug and it fixes several 18796 known outstanding issues on various platforms. 18797 18798 The ACPI_DEBUG_PRINT and function trace entry/exit macros have 18799 been further optimized for size. There are 700 invocations of the 18800 DEBUG_PRINT macro alone, so each optimization reduces the size of 18801 the debug version of the subsystem significantly. 18802 18803 A stack trace mechanism has been implemented. The maximum stack 18804 usage is about 2K on 32-bit platforms. The debugger command "stat 18805 stack" will display the current maximum stack usage. 18806 18807 All public symbols and global variables within the subsystem are 18808 now prefixed with the string "Acpi". This keeps all of the 18809 symbols grouped together in a kernel map, and avoids conflicts 18810 with other kernel subsystems. 18811 18812 Most of the internal fixed lookup tables have been moved into the 18813 code segment via the const operator. 18814 18815 Several enhancements have been made to the interpreter to both 18816 reduce the code size and improve performance. 18817 18818 Current core subsystem library code sizes are shown below. These 18819 are the code and data sizes for the acpica.lib produced by the 18820 Microsoft Visual C++ 6.0 compiler, and these values do not include 18821 any ACPI driver or OSPM code. The debug version of the code 18822 includes the full debug trace mechanism which contains over 700 18823 invocations of the DEBUG_PRINT macro, 500 function entry macro 18824 invocations, and over 900 function exit macro invocations -- 18825 leading to a much larger code and data size. Note that these 18826 values will vary depending on the efficiency of the compiler and 18827 the compiler options used during generation. 18828 18829 Non-Debug Version: 64K Code, 5K Data, 69K Total 18830 Debug Version: 137K Code, 58K Data, 195K Total 18831 18832 Linux: 18833 18834 Implemented wbinvd() macro, pending a kernel-wide definition. 18835 18836 Fixed /proc/acpi/event to handle poll() and short reads. 18837 18838 ASL Compiler, version X2026: 18839 18840 Fixed a problem introduced in the previous label where the AML 18841 18842 code emitted for package objects produced packages with zero 18843 length. 18844 18845 ---------------------------------------- 18846 Summary of changes for this label: 08_16_01 18847 18848 ACPI CA Core Subsystem: 18849 18850 The following ACPI 2.0 ASL operators have been implemented in the 18851 AML interpreter (These are already supported by the Intel ASL 18852 compiler): ToDecimalString, ToHexString, ToString, ToInteger, and 18853 ToBuffer. Support for 64-bit AML constants is implemented in the 18854 AML parser, debugger, and disassembler. 18855 18856 The internal memory tracking mechanism (leak detection code) has 18857 been upgraded to reduce the memory overhead (a separate tracking 18858 block is no longer allocated for each memory allocation), and now 18859 supports all of the internal object caches. 18860 18861 The data structures and code for the internal object caches have 18862 been coelesced and optimized so that there is a single cache and 18863 memory list data structure and a single group of functions that 18864 implement generic cache management. This has reduced the code 18865 size in both the debug and release versions of the subsystem. 18866 18867 The DEBUG_PRINT macro(s) have been optimized for size and replaced 18868 by ACPI_DEBUG_PRINT. The syntax for this macro is slightly 18869 different, because it generates a single call to an internal 18870 function. This results in a savings of about 90 bytes per 18871 invocation, resulting in an overall code and data savings of about 18872 16% in the debug version of the subsystem. 18873 18874 Linux: 18875 18876 Fixed C3 disk corruption problems and re-enabled C3 on supporting 18877 machines. 18878 18879 Integrated low-level sleep code by Patrick Mochel. 18880 18881 Further tweaked source code Linuxization. 18882 18883 Other minor fixes. 18884 18885 ASL Compiler: 18886 18887 Support for ACPI 2.0 variable length packages is fixed/completed. 18888 18889 Fixed a problem where the optional length parameter for the ACPI 18890 2.0 ToString operator. 18891 18892 Fixed multiple extraneous error messages when a syntax error is 18893 detected within the declaration line of a control method. 18894 18895 ---------------------------------------- 18896 Summary of changes for this label: 07_17_01 18897 18898 ACPI CA Core Subsystem: 18899 18900 Added a new interface named AcpiGetFirmwareTable to obtain any 18901 ACPI table via the ACPI signature. The interface can be called at 18902 any time during kernel initialization, even before the kernel 18903 virtual memory manager is initialized and paging is enabled. This 18904 allows kernel subsystems to obtain ACPI tables very early, even 18905 before the ACPI CA subsystem is initialized. 18906 18907 Fixed a problem where Fields defined with the AnyAcc attribute 18908 could be resolved to the incorrect address under the following 18909 conditions: 1) the field width is larger than 8 bits and 2) the 18910 parent operation region is not defined on a DWORD boundary. 18911 18912 Fixed a problem where the interpreter is not being locked during 18913 namespace initialization (during execution of the _INI control 18914 methods), causing an error when an attempt is made to release it 18915 later. 18916 18917 ACPI 2.0 support in the AML Interpreter has begun and will be 18918 ongoing throughout the rest of this year. In this label, The Mod 18919 operator is implemented. 18920 18921 Added a new data type to contain full PCI addresses named 18922 ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device, 18923 and Function values. 18924 18925 Linux: 18926 18927 Enhanced the Linux version of the source code to change most 18928 capitalized ACPI type names to lowercase. For example, all 18929 instances of ACPI_STATUS are changed to acpi_status. This will 18930 result in a large diff, but the change is strictly cosmetic and 18931 aligns the CA code closer to the Linux coding standard. 18932 18933 OSL Interfaces: 18934 18935 The interfaces to the PCI configuration space have been changed to 18936 add the PCI Segment number and to split the single 32-bit combined 18937 DeviceFunction field into two 16-bit fields. This was 18938 accomplished by moving the four values that define an address in 18939 PCI configuration space (segment, bus, device, and function) to 18940 the new ACPI_PCI_ID structure. 18941 18942 The changes to the PCI configuration space interfaces led to a 18943 reexamination of the complete set of address space access 18944 interfaces for PCI, I/O, and Memory. The previously existing 18 18945 interfaces have proven difficult to maintain (any small change 18946 must be propagated across at least 6 interfaces) and do not easily 18947 allow for future expansion to 64 bits if necessary. Also, on some 18948 systems, it would not be appropriate to demultiplex the access 18949 width (8, 16, 32,or 64) before calling the OSL if the 18950 corresponding native OS interfaces contain a similar access width 18951 parameter. For these reasons, the 18 address space interfaces 18952 have been replaced by these 6 new ones: 18953 18954 AcpiOsReadPciConfiguration 18955 AcpiOsWritePciConfiguration 18956 AcpiOsReadMemory 18957 AcpiOsWriteMemory 18958 AcpiOsReadPort 18959 AcpiOsWritePort 18960 18961 Added a new interface named AcpiOsGetRootPointer to allow the OSL 18962 to perform the platform and/or OS-specific actions necessary to 18963 obtain the ACPI RSDP table pointer. On IA-32 platforms, this 18964 interface will simply call down to the CA core to perform the low- 18965 memory search for the table. On IA-64, the RSDP is obtained from 18966 EFI. Migrating this interface to the OSL allows the CA core to 18967 18968 remain OS and platform independent. 18969 18970 Added a new interface named AcpiOsSignal to provide a generic 18971 "function code and pointer" interface for various miscellaneous 18972 signals and notifications that must be made to the host OS. The 18973 first such signals are intended to support the ASL Fatal and 18974 Breakpoint operators. In the latter case, the AcpiOsBreakpoint 18975 interface has been obsoleted. 18976 18977 The definition of the AcpiFormatException interface has been 18978 changed to simplify its use. The caller no longer must supply a 18979 buffer to the call; A pointer to a const string is now returned 18980 directly. This allows the call to be easily used in printf 18981 statements, etc. since the caller does not have to manage a local 18982 buffer. 18983 18984 18985 ASL Compiler, Version X2025: 18986 18987 The ACPI 2.0 Switch/Case/Default operators have been implemented 18988 and are fully functional. They will work with all ACPI 1.0 18989 interpreters, since the operators are simply translated to If/Else 18990 pairs. 18991 18992 The ACPI 2.0 ElseIf operator is implemented and will also work 18993 with 1.0 interpreters, for the same reason. 18994 18995 Implemented support for ACPI 2.0 variable-length packages. These 18996 packages have a separate opcode, and their size is determined by 18997 the interpreter at run-time. 18998 18999 Documentation The ACPI CA Programmer Reference has been updated to 19000 reflect the new interfaces and changes to existing interfaces. 19001 19002 ------------------------------------------ 19003 Summary of changes for this label: 06_15_01 19004 19005 ACPI CA Core Subsystem: 19006 19007 Fixed a problem where a DWORD-accessed field within a Buffer 19008 object would get its byte address inadvertently rounded down to 19009 the nearest DWORD. Buffers are always Byte-accessible. 19010 19011 ASL Compiler, version X2024: 19012 19013 Fixed a problem where the Switch() operator would either fault or 19014 hang the compiler. Note however, that the AML code for this ACPI 19015 2.0 operator is not yet implemented. 19016 19017 Compiler uses the new AcpiOsGetTimer interface to obtain compile 19018 timings. 19019 19020 Implementation of the CreateField operator automatically converts 19021 a reference to a named field within a resource descriptor from a 19022 byte offset to a bit offset if required. 19023 19024 Added some missing named fields from the resource descriptor 19025 support. These are the names that are automatically created by the 19026 compiler to reference fields within a descriptor. They are only 19027 valid at compile time and are not passed through to the AML 19028 interpreter. 19029 19030 Resource descriptor named fields are now typed as Integers and 19031 subject to compile-time typechecking when used in expressions. 19032 19033 ------------------------------------------ 19034 Summary of changes for this label: 05_18_01 19035 19036 ACPI CA Core Subsystem: 19037 19038 Fixed a couple of problems in the Field support code where bits 19039 from adjacent fields could be returned along with the proper field 19040 bits. Restructured the field support code to improve performance, 19041 readability and maintainability. 19042 19043 New DEBUG_PRINTP macro automatically inserts the procedure name 19044 into the output, saving hundreds of copies of procedure name 19045 strings within the source, shrinking the memory footprint of the 19046 debug version of the core subsystem. 19047 19048 Source Code Structure: 19049 19050 The source code directory tree was restructured to reflect the 19051 current organization of the component architecture. Some files 19052 and directories have been moved and/or renamed. 19053 19054 Linux: 19055 19056 Fixed leaking kacpidpc processes. 19057 19058 Fixed queueing event data even when /proc/acpi/event is not 19059 opened. 19060 19061 ASL Compiler, version X2020: 19062 19063 Memory allocation performance enhancement - over 24X compile time 19064 improvement on large ASL files. Parse nodes and namestring 19065 buffers are now allocated from a large internal compiler buffer. 19066 19067 The temporary .SRC file is deleted unless the "-s" option is 19068 specified 19069 19070 The "-d" debug output option now sends all output to the .DBG file 19071 instead of the console. 19072 19073 "External" second parameter is now optional 19074 19075 "ElseIf" syntax now properly allows the predicate 19076 19077 Last operand to "Load" now recognized as a Target operand 19078 19079 Debug object can now be used anywhere as a normal object. 19080 19081 ResourceTemplate now returns an object of type BUFFER 19082 19083 EISAID now returns an object of type INTEGER 19084 19085 "Index" now works with a STRING operand 19086 19087 "LoadTable" now accepts optional parameters 19088 19089 "ToString" length parameter is now optional 19090 19091 "Interrupt (ResourceType," parse error fixed. 19092 19093 "Register" with a user-defined region space parse error fixed 19094 19095 Escaped backslash at the end of a string ("\\") scan/parse error 19096 fixed 19097 19098 "Revision" is now an object of type INTEGER. 19099 19100 19101 19102 ------------------------------------------ 19103 Summary of changes for this label: 05_02_01 19104 19105 Linux: 19106 19107 /proc/acpi/event now blocks properly. 19108 19109 Removed /proc/sys/acpi. You can still dump your DSDT from 19110 /proc/acpi/dsdt. 19111 19112 ACPI CA Core Subsystem: 19113 19114 Fixed a problem introduced in the previous label where some of the 19115 "small" resource descriptor types were not recognized. 19116 19117 Improved error messages for the case where an ASL Field is outside 19118 the range of the parent operation region. 19119 19120 ASL Compiler, version X2018: 19121 19122 19123 Added error detection for ASL Fields that extend beyond the length 19124 of the parent operation region (only if the length of the region 19125 is known at compile time.) This includes fields that have a 19126 minimum access width that is smaller than the parent region, and 19127 individual field units that are partially or entirely beyond the 19128 extent of the parent. 19129 19130 19131 19132 ------------------------------------------ 19133 Summary of changes for this label: 04_27_01 19134 19135 ACPI CA Core Subsystem: 19136 19137 Fixed a problem where the namespace mutex could be released at the 19138 wrong time during execution of AcpiRemoveAddressSpaceHandler. 19139 19140 Added optional thread ID output for debug traces, to simplify 19141 debugging of multiple threads. Added context switch notification 19142 when the debug code realizes that a different thread is now 19143 executing ACPI code. 19144 19145 Some additional external data types have been prefixed with the 19146 string "ACPI_" for consistency. This may effect existing code. 19147 The data types affected are the external callback typedefs - e.g., 19148 19149 WALK_CALLBACK becomes ACPI_WALK_CALLBACK. 19150 19151 Linux: 19152 19153 Fixed an issue with the OSL semaphore implementation where a 19154 thread was waking up with an error from receiving a SIGCHLD 19155 signal. 19156 19157 Linux version of ACPI CA now uses the system C library for string 19158 manipulation routines instead of a local implementation. 19159 19160 Cleaned up comments and removed TBDs. 19161 19162 ASL Compiler, version X2017: 19163 19164 Enhanced error detection and reporting for all file I/O 19165 operations. 19166 19167 Documentation: 19168 19169 Programmer Reference updated to version 1.06. 19170 19171 19172 19173 ------------------------------------------ 19174 Summary of changes for this label: 04_13_01 19175 19176 ACPI CA Core Subsystem: 19177 19178 Restructured support for BufferFields and RegionFields. 19179 BankFields support is now fully operational. All known 32-bit 19180 limitations on field sizes have been removed. Both BufferFields 19181 and (Operation) RegionFields are now supported by the same field 19182 management code. 19183 19184 Resource support now supports QWORD address and IO resources. The 19185 16/32/64 bit address structures and the Extended IRQ structure 19186 have been changed to properly handle Source Resource strings. 19187 19188 A ThreadId of -1 is now used to indicate a "mutex not acquired" 19189 condition internally and must never be returned by AcpiOsThreadId. 19190 This reserved value was changed from 0 since Unix systems allow a 19191 thread ID of 0. 19192 19193 Linux: 19194 19195 Driver code reorganized to enhance portability 19196 19197 Added a kernel configuration option to control ACPI_DEBUG 19198 19199 Fixed the EC driver to honor _GLK. 19200 19201 ASL Compiler, version X2016: 19202 19203 Fixed support for the "FixedHw" keyword. Previously, the FixedHw 19204 address space was set to 0, not 0x7f as it should be. 19205 19206 ------------------------------------------ 19207 Summary of changes for this label: 03_13_01 19208 19209 ACPI CA Core Subsystem: 19210 19211 During ACPI initialization, the _SB_._INI method is now run if 19212 present. 19213 19214 Notify handler fix - notifies are deferred until the parent method 19215 completes execution. This fixes the "mutex already acquired" 19216 issue seen occasionally. 19217 19218 Part of the "implicit conversion" rules in ACPI 2.0 have been 19219 found to cause compatibility problems with existing ASL/AML. The 19220 convert "result-to-target-type" implementation has been removed 19221 for stores to method Args and Locals. Source operand conversion 19222 is still fully implemented. Possible changes to ACPI 2.0 19223 specification pending. 19224 19225 Fix to AcpiRsCalculatePciRoutingTableLength to return correct 19226 length. 19227 19228 Fix for compiler warnings for 64-bit compiles. 19229 19230 Linux: 19231 19232 /proc output aligned for easier parsing. 19233 19234 Release-version compile problem fixed. 19235 19236 New kernel configuration options documented in Configure.help. 19237 19238 IBM 600E - Fixed Sleep button may generate "Invalid <NULL> 19239 context" message. 19240 19241 OSPM: 19242 19243 Power resource driver integrated with bus manager. 19244 19245 Fixed kernel fault during active cooling for thermal zones. 19246 19247 Source Code: 19248 19249 The source code tree has been restructured. 19250 19251 19252 19253 ------------------------------------------ 19254 Summary of changes for this label: 03_02_01 19255 19256 Linux OS Services Layer (OSL): 19257 19258 Major revision of all Linux-specific code. 19259 19260 Modularized all ACPI-specific drivers. 19261 19262 Added new thermal zone and power resource drivers. 19263 19264 Revamped /proc interface (new functionality is under /proc/acpi). 19265 19266 New kernel configuration options. 19267 19268 Linux known issues: 19269 19270 New kernel configuration options not documented in Configure.help 19271 yet. 19272 19273 19274 Module dependencies not currently implemented. If used, they 19275 should be loaded in this order: busmgr, power, ec, system, 19276 processor, battery, ac_adapter, button, thermal. 19277 19278 Modules will not load if CONFIG_MODVERSION is set. 19279 19280 IBM 600E - entering S5 may reboot instead of shutting down. 19281 19282 IBM 600E - Sleep button may generate "Invalid <NULL> context" 19283 message. 19284 19285 Some systems may fail with "execution mutex already acquired" 19286 message. 19287 19288 ACPI CA Core Subsystem: 19289 19290 Added a new OSL Interface, AcpiOsGetThreadId. This was required 19291 for the deadlock detection code. Defined to return a non-zero, 32- 19292 bit thread ID for the currently executing thread. May be a non- 19293 zero constant integer on single-thread systems. 19294 19295 Implemented deadlock detection for internal subsystem mutexes. We 19296 may add conditional compilation for this code (debug only) later. 19297 19298 ASL/AML Mutex object semantics are now fully supported. This 19299 includes multiple acquires/releases by owner and support for the 19300 19301 Mutex SyncLevel parameter. 19302 19303 A new "Force Release" mechanism automatically frees all ASL 19304 Mutexes that have been acquired but not released when a thread 19305 exits the interpreter. This forces conformance to the ACPI spec 19306 ("All mutexes must be released when an invocation exits") and 19307 prevents deadlocked ASL threads. This mechanism can be expanded 19308 (later) to monitor other resource acquisitions if OEM ASL code 19309 continues to misbehave (which it will). 19310 19311 Several new ACPI exception codes have been added for the Mutex 19312 support. 19313 19314 Recursive method calls are now allowed and supported (the ACPI 19315 spec does in fact allow recursive method calls.) The number of 19316 recursive calls is subject to the restrictions imposed by the 19317 SERIALIZED method keyword and SyncLevel (ACPI 2.0) method 19318 parameter. 19319 19320 Implemented support for the SyncLevel parameter for control 19321 methods (ACPI 2.0 feature) 19322 19323 Fixed a deadlock problem when multiple threads attempted to use 19324 the interpreter. 19325 19326 Fixed a problem where the string length of a String package 19327 element was not always set in a package returned from 19328 AcpiEvaluateObject. 19329 19330 Fixed a problem where the length of a String package element was 19331 not always included in the length of the overall package returned 19332 from AcpiEvaluateObject. 19333 19334 Added external interfaces (Acpi*) to the ACPI debug memory 19335 manager. This manager keeps a list of all outstanding 19336 allocations, and can therefore detect memory leaks and attempts to 19337 free memory blocks more than once. Useful for code such as the 19338 power manager, etc. May not be appropriate for device drivers. 19339 Performance with the debug code enabled is slow. 19340 19341 The ACPI Global Lock is now an optional hardware element. 19342 19343 ASL Compiler Version X2015: 19344 19345 Integrated changes to allow the compiler to be generated on 19346 multiple platforms. 19347 19348 Linux makefile added to generate the compiler on Linux 19349 19350 Source Code: 19351 19352 All platform-specific headers have been moved to their own 19353 subdirectory, Include/Platform. 19354 19355 New source file added, Interpreter/ammutex.c 19356 19357 New header file, Include/acstruct.h 19358 19359 Documentation: 19360 19361 The programmer reference has been updated for the following new 19362 interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree 19363 19364 ------------------------------------------ 19365 Summary of changes for this label: 02_08_01 19366 19367 Core ACPI CA Subsystem: Fixed a problem where an error was 19368 incorrectly returned if the return resource buffer was larger than 19369 the actual data (in the resource interfaces). 19370 19371 References to named objects within packages are resolved to the 19372 19373 full pathname string before packages are returned directly (via 19374 the AcpiEvaluateObject interface) or indirectly via the resource 19375 interfaces. 19376 19377 Linux OS Services Layer (OSL): 19378 19379 Improved /proc battery interface. 19380 19381 19382 Added C-state debugging output and other miscellaneous fixes. 19383 19384 ASL Compiler Version X2014: 19385 19386 All defined method arguments can now be used as local variables, 19387 including the ones that are not actually passed in as parameters. 19388 The compiler tracks initialization of the arguments and issues an 19389 exception if they are used without prior assignment (just like 19390 locals). 19391 19392 The -o option now specifies a filename prefix that is used for all 19393 output files, including the AML output file. Otherwise, the 19394 default behavior is as follows: 1) the AML goes to the file 19395 specified in the DSDT. 2) all other output files use the input 19396 source filename as the base. 19397 19398 ------------------------------------------ 19399 Summary of changes for this label: 01_25_01 19400 19401 Core ACPI CA Subsystem: Restructured the implementation of object 19402 store support within the interpreter. This includes support for 19403 the Store operator as well as any ASL operators that include a 19404 target operand. 19405 19406 Partially implemented support for Implicit Result-to-Target 19407 conversion. This is when a result object is converted on the fly 19408 to the type of an existing target object. Completion of this 19409 support is pending further analysis of the ACPI specification 19410 concerning this matter. 19411 19412 CPU-specific code has been removed from the subsystem (hardware 19413 directory). 19414 19415 New Power Management Timer functions added 19416 19417 Linux OS Services Layer (OSL): Moved system state transition code 19418 to the core, fixed it, and modified Linux OSL accordingly. 19419 19420 Fixed C2 and C3 latency calculations. 19421 19422 19423 We no longer use the compilation date for the version message on 19424 initialization, but retrieve the version from AcpiGetSystemInfo(). 19425 19426 Incorporated for fix Sony VAIO machines. 19427 19428 Documentation: The Programmer Reference has been updated and 19429 reformatted. 19430 19431 19432 ASL Compiler: Version X2013: Fixed a problem where the line 19433 numbering and error reporting could get out of sync in the 19434 presence of multiple include files. 19435 19436 ------------------------------------------ 19437 Summary of changes for this label: 01_15_01 19438 19439 Core ACPI CA Subsystem: 19440 19441 Implemented support for type conversions in the execution of the 19442 ASL Concatenate operator (The second operand is converted to 19443 match the type of the first operand before concatenation.) 19444 19445 Support for implicit source operand conversion is partially 19446 implemented. The ASL source operand types Integer, Buffer, and 19447 String are freely interchangeable for most ASL operators and are 19448 converted by the interpreter on the fly as required. Implicit 19449 Target operand conversion (where the result is converted to the 19450 target type before storing) is not yet implemented. 19451 19452 Support for 32-bit and 64-bit BCD integers is implemented. 19453 19454 Problem fixed where a field read on an aligned field could cause a 19455 read past the end of the field. 19456 19457 New exception, AE_AML_NO_RETURN_VALUE, is returned when a method 19458 does not return a value, but the caller expects one. (The ASL 19459 compiler flags this as a warning.) 19460 19461 ASL Compiler: 19462 19463 Version X2011: 19464 1. Static typechecking of all operands is implemented. This 19465 prevents the use of invalid objects (such as using a Package where 19466 an Integer is required) at compile time instead of at interpreter 19467 run-time. 19468 2. The ASL source line is printed with ALL errors and warnings. 19469 3. Bug fix for source EOF without final linefeed. 19470 4. Debug option is split into a parse trace and a namespace trace. 19471 5. Namespace output option (-n) includes initial values for 19472 integers and strings. 19473 6. Parse-only option added for quick syntax checking. 19474 7. Compiler checks for duplicate ACPI name declarations 19475 19476 Version X2012: 19477 1. Relaxed typechecking to allow interchangeability between 19478 strings, integers, and buffers. These types are now converted by 19479 the interpreter at runtime. 19480 2. Compiler reports time taken by each internal subsystem in the 19481 debug output file. 19482 19483 19484 ------------------------------------------ 19485 Summary of changes for this label: 12_14_00 19486 19487 ASL Compiler: 19488 19489 This is the first official release of the compiler. Since the 19490 compiler requires elements of the Core Subsystem, this label 19491 synchronizes everything. 19492 19493 ------------------------------------------ 19494 Summary of changes for this label: 12_08_00 19495 19496 19497 Fixed a problem where named references within the ASL definition 19498 of both OperationRegions and CreateXXXFields did not work 19499 properly. The symptom was an AE_AML_OPERAND_TYPE during 19500 initialization of the region/field. This is similar (but not 19501 related internally) to the problem that was fixed in the last 19502 label. 19503 19504 Implemented both 32-bit and 64-bit support for the BCD ASL 19505 functions ToBCD and FromBCD. 19506 19507 Updated all legal headers to include "2000" in the copyright 19508 years. 19509 19510 ------------------------------------------ 19511 Summary of changes for this label: 12_01_00 19512 19513 Fixed a problem where method invocations within the ASL definition 19514 of both OperationRegions and CreateXXXFields did not work 19515 properly. The symptom was an AE_AML_OPERAND_TYPE during 19516 initialization of the region/field: 19517 19518 nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments 19519 [DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s) 19520 (0x3005) 19521 19522 Fixed a problem where operators with more than one nested 19523 subexpression would fail. The symptoms were varied, by mostly 19524 AE_AML_OPERAND_TYPE errors. This was actually a rather serious 19525 problem that has gone unnoticed until now. 19526 19527 Subtract (Add (1,2), Multiply (3,4)) 19528 19529 Fixed a problem where AcpiGetHandle didn't quite get fixed in the 19530 previous build (The prefix part of a relative path was handled 19531 incorrectly). 19532 19533 Fixed a problem where Operation Region initialization failed if 19534 the operation region name was a "namepath" instead of a simple 19535 "nameseg". Symptom was an AE_NO_OPERAND error. 19536 19537 Fixed a problem where an assignment to a local variable via the 19538 indirect RefOf mechanism only worked for the first such 19539 assignment. Subsequent assignments were ignored. 19540 19541 ------------------------------------------ 19542 Summary of changes for this label: 11_15_00 19543 19544 ACPI 2.0 table support with backwards support for ACPI 1.0 and the 19545 0.71 extensions. Note: although we can read ACPI 2.0 BIOS tables, 19546 the AML interpreter does NOT have support for the new 2.0 ASL 19547 grammar terms at this time. 19548 19549 All ACPI hardware access is via the GAS structures in the ACPI 2.0 19550 FADT. 19551 19552 All physical memory addresses across all platforms are now 64 bits 19553 wide. Logical address width remains dependent on the platform 19554 (i.e., "void *"). 19555 19556 AcpiOsMapMemory interface changed to a 64-bit physical address. 19557 19558 The AML interpreter integer size is now 64 bits, as per the ACPI 19559 2.0 specification. 19560 19561 For backwards compatibility with ACPI 1.0, ACPI tables with a 19562 revision number less than 2 use 32-bit integers only. 19563 19564 Fixed a problem where the evaluation of OpRegion operands did not 19565 always resolve them to numbers properly. 19566 19567 ------------------------------------------ 19568 Summary of changes for this label: 10_20_00 19569 19570 Fix for CBN_._STA issue. This fix will allow correct access to 19571 CBN_ OpRegions when the _STA returns 0x8. 19572 19573 Support to convert ACPI constants (Ones, Zeros, One) to actual 19574 values before a package object is returned 19575 19576 Fix for method call as predicate to if/while construct causing 19577 incorrect if/while behavior 19578 19579 Fix for Else block package lengths sometimes calculated wrong (if 19580 block > 63 bytes) 19581 19582 Fix for Processor object length field, was always zero 19583 19584 Table load abort if FACP sanity check fails 19585 19586 Fix for problem with Scope(name) if name already exists 19587 19588 Warning emitted if a named object referenced cannot be found 19589 (resolved) during method execution. 19590 19591 19592 19593 19594 19595 ------------------------------------------ 19596 Summary of changes for this label: 9_29_00 19597 19598 New table initialization interfaces: AcpiInitializeSubsystem no 19599 longer has any parameters AcpiFindRootPointer - Find the RSDP (if 19600 necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP- 19601 >RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by 19602 AcpiLoadTables 19603 19604 Note: These interface changes require changes to all existing OSDs 19605 19606 The PCI_Config default address space handler is always installed 19607 at the root namespace object. 19608 19609 ------------------------------------------- 19610 Summary of changes for this label: 09_15_00 19611 19612 The new initialization architecture is implemented. New 19613 interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize) 19614 AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace 19615 19616 (Namespace is automatically loaded when a table is loaded) 19617 19618 The ACPI_OPERAND_OBJECT has been optimized to shrink its size from 19619 52 bytes to 32 bytes. There is usually one of these for every 19620 namespace object, so the memory savings is significant. 19621 19622 Implemented just-in-time evaluation of the CreateField operators. 19623 19624 Bug fixes for IA-64 support have been integrated. 19625 19626 Additional code review comments have been implemented 19627 19628 The so-called "third pass parse" has been replaced by a final walk 19629 through the namespace to initialize all operation regions (address 19630 spaces) and fields that have not yet been initialized during the 19631 execution of the various _INI and REG methods. 19632 19633 New file - namespace/nsinit.c 19634 19635 ------------------------------------------- 19636 Summary of changes for this label: 09_01_00 19637 19638 Namespace manager data structures have been reworked to change the 19639 primary object from a table to a single object. This has 19640 resulted in dynamic memory savings of 3X within the namespace and 19641 2X overall in the ACPI CA subsystem. 19642 19643 Fixed problem where the call to AcpiEvFindPciRootBuses was 19644 inadvertently left commented out. 19645 19646 Reduced the warning count when generating the source with the GCC 19647 compiler. 19648 19649 Revision numbers added to each module header showing the 19650 SourceSafe version of the file. Please refer to this version 19651 number when giving us feedback or comments on individual modules. 19652 19653 The main object types within the subsystem have been renamed to 19654 clarify their purpose: 19655 19656 ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT 19657 ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT 19658 ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE 19659 19660 NOTE: no changes to the initialization sequence are included in 19661 this label. 19662 19663 ------------------------------------------- 19664 Summary of changes for this label: 08_23_00 19665 19666 Fixed problem where TerminateControlMethod was being called 19667 multiple times per method 19668 19669 Fixed debugger problem where single stepping caused a semaphore to 19670 be oversignalled 19671 19672 Improved performance through additional parse object caching - 19673 added ACPI_EXTENDED_OP type 19674 19675 ------------------------------------------- 19676 Summary of changes for this label: 08_10_00 19677 19678 Parser/Interpreter integration: Eliminated the creation of 19679 complete parse trees for ACPI tables and control methods. 19680 Instead, parse subtrees are created and then deleted as soon as 19681 they are processed (Either entered into the namespace or executed 19682 by the interpreter). This reduces the use of dynamic kernel 19683 memory significantly. (about 10X) 19684 19685 Exception codes broken into classes and renumbered. Be sure to 19686 recompile all code that includes acexcep.h. Hopefully we won't 19687 have to renumber the codes again now that they are split into 19688 classes (environment, programmer, AML code, ACPI table, and 19689 internal). 19690 19691 Fixed some additional alignment issues in the Resource Manager 19692 subcomponent 19693 19694 Implemented semaphore tracking in the AcpiExec utility, and fixed 19695 several places where mutexes/semaphores were being unlocked 19696 without a corresponding lock operation. There are no known 19697 semaphore or mutex "leaks" at this time. 19698 19699 Fixed the case where an ASL Return operator is used to return an 19700 unnamed package. 19701 19702 ------------------------------------------- 19703 Summary of changes for this label: 07_28_00 19704 19705 Fixed a problem with the way addresses were calculated in 19706 AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem 19707 manifested itself when a Field was created with WordAccess or 19708 DwordAccess, but the field unit defined within the Field was less 19709 19710 than a Word or Dword. 19711 19712 Fixed a problem in AmlDumpOperands() module's loop to pull 19713 operands off of the operand stack to display information. The 19714 problem manifested itself as a TLB error on 64-bit systems when 19715 accessing an operand stack with two or more operands. 19716 19717 Fixed a problem with the PCI configuration space handlers where 19718 context was getting confused between accesses. This required a 19719 change to the generic address space handler and address space 19720 setup definitions. Handlers now get both a global handler context 19721 (this is the one passed in by the user when executing 19722 AcpiInstallAddressSpaceHandler() and a specific region context 19723 that is unique to each region (For example, the _ADR, _SEG and 19724 _BBN values associated with a specific region). The generic 19725 function definitions have changed to the following: 19726 19727 typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function, 19728 UINT32 Address, UINT32 BitWidth, UINT32 *Value, void 19729 *HandlerContext, // This used to be void *Context void 19730 *RegionContext); // This is an additional parameter 19731 19732 typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE 19733 RegionHandle, UINT32 Function, void *HandlerContext, void 19734 **RegionContext); // This used to be **ReturnContext 19735 19736 ------------------------------------------- 19737 Summary of changes for this label: 07_21_00 19738 19739 Major file consolidation and rename. All files within the 19740 interpreter have been renamed as well as most header files. This 19741 was done to prevent collisions with existing files in the host 19742 OSs -- filenames such as "config.h" and "global.h" seem to be 19743 quite common. The VC project files have been updated. All 19744 makefiles will require modification. 19745 19746 The parser/interpreter integration continues in Phase 5 with the 19747 implementation of a complete 2-pass parse (the AML is parsed 19748 twice) for each table; This avoids the construction of a huge 19749 parse tree and therefore reduces the amount of dynamic memory 19750 required by the subsystem. Greater use of the parse object cache 19751 means that performance is unaffected. 19752 19753 Many comments from the two code reviews have been rolled in. 19754 19755 The 64-bit alignment support is complete. 19756 19757 ------------------------------------------- 19758 Summary of changes for this label: 06_30_00 19759 19760 With a nod and a tip of the hat to the technology of yesteryear, 19761 we've added support in the source code for 80 column output 19762 devices. The code is now mostly constrained to 80 columns or 19763 less to support environments and editors that 1) cannot display 19764 or print more than 80 characters on a single line, and 2) cannot 19765 disable line wrapping. 19766 19767 A major restructuring of the namespace data structure has been 19768 completed. The result is 1) cleaner and more 19769 understandable/maintainable code, and 2) a significant reduction 19770 in the dynamic memory requirement for each named ACPI object 19771 (almost half). 19772 19773 ------------------------------------------- 19774 Summary of changes for this label: 06_23_00 19775 19776 Linux support has been added. In order to obtain approval to get 19777 the ACPI CA subsystem into the Linux kernel, we've had to make 19778 quite a few changes to the base subsystem that will affect all 19779 users (all the changes are generic and OS- independent). The 19780 effects of these global changes have been somewhat far reaching. 19781 Files have been merged and/or renamed and interfaces have been 19782 renamed. The major changes are described below. 19783 19784 Osd* interfaces renamed to AcpiOs* to eliminate namespace 19785 pollution/confusion within our target kernels. All OSD 19786 interfaces must be modified to match the new naming convention. 19787 19788 Files merged across the subsystem. A number of the smaller source 19789 and header files have been merged to reduce the file count and 19790 increase the density of the existing files. There are too many 19791 to list here. In general, makefiles that call out individual 19792 files will require rebuilding. 19793 19794 Interpreter files renamed. All interpreter files now have the 19795 prefix am* instead of ie* and is*. 19796 19797 Header files renamed: The acapi.h file is now acpixf.h. The 19798 acpiosd.h file is now acpiosxf.h. We are removing references to 19799 the acronym "API" since it is somewhat windowsy. The new name is 19800 "external interface" or xface or xf in the filenames.j 19801 19802 19803 All manifest constants have been forced to upper case (some were 19804 mixed case.) Also, the string "ACPI_" has been prepended to many 19805 (not all) of the constants, typedefs, and structs. 19806 19807 The globals "DebugLevel" and "DebugLayer" have been renamed 19808 "AcpiDbgLevel" and "AcpiDbgLayer" respectively. 19809 19810 All other globals within the subsystem are now prefixed with 19811 "AcpiGbl_" Internal procedures within the subsystem are now 19812 prefixed with "Acpi" (with only a few exceptions). The original 19813 two-letter abbreviation for the subcomponent remains after "Acpi" 19814 - for example, CmCallocate became AcpiCmCallocate. 19815 19816 Added a source code translation/conversion utility. Used to 19817 generate the Linux source code, it can be modified to generate 19818 other types of source as well. Can also be used to cleanup 19819 existing source by removing extraneous spaces and blank lines. 19820 Found in tools/acpisrc/* 19821 19822 OsdUnMapMemory was renamed to OsdUnmapMemory and then 19823 AcpiOsUnmapMemory. (UnMap became Unmap). 19824 19825 A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore. 19826 When set to one, this indicates that the caller wants to use the 19827 19828 semaphore as a mutex, not a counting semaphore. ACPI CA uses 19829 both types. However, implementers of this call may want to use 19830 different OS primitives depending on the type of semaphore 19831 requested. For example, some operating systems provide separate 19832 19833 "mutex" and "semaphore" interfaces - where the mutex interface is 19834 much faster because it doesn't have all the overhead of a full 19835 semaphore implementation. 19836 19837 Fixed a deadlock problem where a method that accesses the PCI 19838 address space can block forever if it is the first access to the 19839 space. 19840 19841 ------------------------------------------- 19842 Summary of changes for this label: 06_02_00 19843 19844 Support for environments that cannot handle unaligned data 19845 accesses (e.g. firmware and OS environments devoid of alignment 19846 handler technology namely SAL/EFI and the IA-64 Linux kernel) has 19847 been added (via configurable macros) in these three areas: - 19848 Transfer of data from the raw AML byte stream is done via byte 19849 moves instead of word/dword/qword moves. - External objects are 19850 aligned within the user buffer, including package elements (sub- 19851 objects). - Conversion of name strings to UINT32 Acpi Names is now 19852 done byte-wise. 19853 19854 The Store operator was modified to mimic Microsoft's 19855 implementation when storing to a Buffer Field. 19856 19857 Added a check of the BM_STS bit before entering C3. 19858 19859 The methods subdirectory has been obsoleted and removed. A new 19860 file, cmeval.c subsumes the functionality. 19861 19862 A 16-bit (DOS) version of AcpiExec has been developed. The 19863 makefile is under the acpiexec directory. 19864
Indexes created Thu Oct 02 14:10:14 GMT 2025