changes.txt revision 1.1.1.15
1 ---------------------------------------- 2 10 November 2017. Summary of changes for version 20171110: 3 4 5 1) ACPICA kernel-resident subsystem: 6 7 This release implements full support for ACPI 6.2A: 8 NFIT - Added a new subtable, "Platform Capabilities Structure" 9 No other changes to ACPICA were required, since ACPI 6.2A is primarily an 10 errata release of the specification. 11 12 Other ACPI table changes: 13 IORT: Added the SMMUv3 Device ID mapping index. Hanjun Guo 14 PPTT: Added cache attribute flag definitions to actbl1.h. Jeremy 15 Linton 16 17 Utilities: Modified the string/integer conversion functions to use 18 internal 64-bit divide support instead of a native divide. On 32-bit 19 platforms, a 64-bit divide typically requires a library function which 20 may not be present in the build (kernel or otherwise). 21 22 Implemented a targeted error message for timeouts returned from the 23 Embedded Controller device driver. This is seen frequently enough to 24 special-case an AE_TIME returned from an EC operation region access: 25 "Timeout from EC hardware or EC device driver" 26 27 Changed the "ACPI Exception" message prefix to "ACPI Error" so that all 28 runtime error messages have the identical prefix. 29 30 31 2) iASL Compiler/Disassembler and Tools: 32 33 AcpiXtract: Fixed a problem with table header detection within the 34 acpidump file. Processing a table could be ended early if a 0x40 (@) 35 appears in the original binary table, resulting in the @ symbol appearing 36 in the decoded ASCII field at the end of the acpidump text line. The 37 symbol caused acpixtract to incorrectly think it had reached the end of 38 the current table and the beginning of a new table. 39 40 AcpiXtract: Added an option (-f) to ignore some errors during table 41 extraction. This initial implementation ignores non-ASCII and non- 42 printable characters found in the acpidump text file. 43 44 TestSuite(ASLTS)/AcpiExec: Fixed and restored the memory usage statistics 45 for ASLTS. This feature is used to track memory allocations from 46 different memory caches within the ACPICA code. At the end of an ASLTS 47 run, these memory statistics are recorded and stored in a log file. 48 49 Debugger (user-space version): Implemented a simple "Background" command. 50 Creates a new thread to execute a control method in the background, while 51 control returns to the debugger prompt to allow additional commands. 52 Syntax: Background <Namepath> [Arguments] 53 54 ---------------------------------------- 55 29 September 2017. Summary of changes for version 20170929: 56 57 58 1) ACPICA kernel-resident subsystem: 59 60 Redesigned and implemented an improved ASL While() loop timeout 61 mechanism. This mechanism is used to prevent infinite loops in the kernel 62 AML interpreter caused by either non-responsive hardware or incorrect AML 63 code. The new implementation uses AcpiOsGetTimer instead of a simple 64 maximum loop count, and is thus more accurate and constant across 65 different machines. The default timeout is currently 30 seconds, but this 66 may be adjusted later. 67 68 Renamed the ACPI_AML_INFINITE_LOOP exception to AE_AML_LOOP_TIMEOUT to 69 better reflect the new implementation of the loop timeout mechanism. 70 71 Updated the AcpiGetTimerDuration interface to cleanup the 64-bit support 72 and to fix an off-by-one error. Jung-uk Kim. 73 74 Fixed an EFI build problem by updating the makefiles to for a new file 75 that was added, utstrsuppt.c 76 77 78 2) iASL Compiler/Disassembler and Tools: 79 80 Implemented full support for the PDTT, SDEV, and TPM2 ACPI tables. This 81 includes support in the table disassembler, compiler, and template 82 generator. 83 84 iASL: Added an exception for an illegal type of recursive method 85 invocation. If a method creates named objects, the first recursive call 86 will fail at runtime. This change adds an error detection at compile time 87 to catch the problem up front. Note: Marking such a method as 88 "serialized" will not help with this problem, because the same thread can 89 acquire the method mutex more than once. Example compiler and runtime 90 output: 91 92 Method (MTH1) 93 { 94 Name (INT1, 1) 95 MTH1 () 96 } 97 98 dsdt.asl 22: MTH1 () 99 Error 6152 - ^ Illegal recursive call to method 100 that creates named objects (MTH1) 101 102 Previous runtime exception: 103 ACPI Error: [INT1] Namespace lookup failure, 104 AE_ALREADY_EXISTS (20170831/dswload2-465) 105 106 iASL: Updated support for External() opcodes to improve namespace 107 management and error detection. These changes are related to issues seen 108 with multiple-segment namespace pathnames within External declarations, 109 such as below: 110 111 External(\_SB.PCI0.GFX0, DeviceObj) 112 External(\_SB.PCI0.GFX0.ALSI) 113 114 iASL: Implemented support for multi-line error/warning messages. This 115 enables more detailed and helpful error messages as below, from the 116 initial deployment for the duplicate names error: 117 118 DSDT.iiii 1692: Device(PEG2) { 119 Error 6074 - ^ Name already exists in scope 120 (PEG2) 121 122 Original name creation/declaration below: 123 DSDT.iiii 93: External(\_SB.PCI0.PEG2, DeviceObj) 124 125 AcpiXtract: Added additional flexibility to support differing input hex 126 dump formats. Specifically, hex dumps that contain partial disassembly 127 and/or comments within the ACPI table data definition. There exist some 128 dump utilities seen in the field that create this type of hex dump (such 129 as Simics). For example: 130 131 DSDT @ 0xdfffd0c0 (10999 bytes) 132 Signature DSDT 133 Length 10999 134 Revision 1 135 Checksum 0xf3 (Ok) 136 OEM_ID BXPC 137 OEM_table_id BXDSDT 138 OEM_revision 1 139 Creator_id 1280593481 140 Creator_revision 537399345 141 0000: 44 53 44 54 f7 2a 00 00 01 f3 42 58 50 43 00 00 142 ... 143 2af0: 5f 4c 30 46 00 a4 01 144 145 Test suite: Miscellaneous changes/fixes: 146 More cleanup and simplification of makefiles 147 Continue compilation of test cases after a compile failure 148 Do not perform binary compare unless both files actually exist 149 150 iASL: Performed some code/module restructuring. Moved all memory 151 allocation functions to new modules. Two new files, aslallocate.c and 152 aslcache.c 153 154 ---------------------------------------- 155 31 August 2017. Summary of changes for version 20170831: 156 157 158 1) ACPICA kernel-resident subsystem: 159 160 Implemented internal support for full 64-bit addresses that appear in all 161 Generic Address Structure (GAS) structures. Previously, only the lower 32 162 bits were used. Affects the use of GAS structures in the FADT and other 163 tables, as well as the GAS structures passed to the AcpiRead and 164 AcpiWrite public external interfaces that are used by drivers. Lv Zheng. 165 166 Added header support for the PDTT ACPI table (Processor Debug Trigger 167 Table). Full support in the iASL Data Table Compiler and disassembler is 168 forthcoming. 169 170 171 2) iASL Compiler/Disassembler and Tools: 172 173 iASL/Disassembler: Fixed a problem with the PPTT ACPI table (Processor 174 Properties Topology Table) where a flag bit was specified in the wrong 175 bit position ("Line Size Valid", bit 6). 176 177 iASL: Implemented support for Octal integer constants as defined by the 178 ASL language grammar, per the ACPI specification. Any integer constant 179 that starts with a zero is an octal constant. For example, 180 Store (037777, Local0) /* Octal constant */ 181 Store (0x3FFF, Local0) /* Hex equivalent */ 182 Store (16383, Local0) /* Decimal equivalent */ 183 184 iASL: Improved overflow detection for 64-bit string conversions during 185 compilation of integer constants. "Overflow" in this case means a string 186 that represents an integer that is too large to fit into a 64-bit value. 187 Any 64-bit constants within a 32-bit DSDT or SSDT are still truncated to 188 the low-order 32 bits with a warning, as previously implemented. Several 189 new exceptions are defined that indicate a 64-bit overflow, as well as 190 the base (radix) that was used during the attempted conversion. Examples: 191 Local0 = 0xAAAABBBBCCCCDDDDEEEEFFFF // AE_HEX_OVERFLOW 192 Local0 = 01111222233334444555566667777 // AE_OCTAL_OVERFLOW 193 Local0 = 11112222333344445555666677778888 // AE_DECIMAL_OVERFLOW 194 195 iASL: Added a warning for the case where a ResourceTemplate is declared 196 with no ResourceDescriptor entries (coded as "ResourceTemplate(){}"). In 197 this case, the resulting template is created with a single END_TAG 198 descriptor, which is essentially useless. 199 200 iASL: Expanded the -vw option (ignore specific warnings/remarks) to 201 include compilation error codes as well. 202 203 ---------------------------------------- 204 28 July 2017. Summary of changes for version 20170728: 205 206 207 1) ACPICA kernel-resident subsystem: 208 209 Fixed a regression seen with small resource descriptors that could cause 210 an inadvertent AE_AML_NO_RESOURCE_END_TAG exception. 211 212 AML interpreter: Implemented a new feature that allows forward references 213 from individual named references within package objects that are 214 contained within blocks of "module-level code". This provides 215 compatibility with other ACPI implementations and supports existing 216 firmware that depends on this feature. Example: 217 218 Name (ABCD, 1) 219 If (ABCD) /* An If() at module-level */ 220 { 221 Name (PKG1, Package() 222 { 223 INT1 /* Forward reference to object INT1 224 */ 225 }) 226 Name (INT1, 0x1234) 227 } 228 229 AML Interpreter: Fixed a problem with the Alias() operator where aliases 230 to some ASL objects were not handled properly. Objects affected are: 231 Mutex, Event, and OperationRegion. 232 233 AML Debugger: Enhanced to properly handle AML Alias objects. These 234 objects have one level of indirection which was not fully supported by 235 the debugger. 236 237 Table Manager: Added support to detect and ignore duplicate SSDTs within 238 the XSDT/RSDT. This error in the XSDT has been seen in the field. 239 240 EFI and EDK2 support: 241 Enabled /WX flag for MSVC builds 242 Added support for AcpiOsStall, AcpiOsSleep, and AcpiOsGetTimer 243 Added local support for 64-bit multiply and shift operations 244 Added support to compile acpidump.efi on Windows 245 Added OSL function stubs for interfaces not used under EFI 246 247 Added additional support for the _DMA predefined name. _DMA returns a 248 buffer containing a resource template. This change add support within the 249 resource manager (AcpiWalkResourceBuffer) to walk and parse this list of 250 resource descriptors. Lorenzo Pieralisi <lorenzo.pieralisi (a] arm.com> 251 252 253 2) iASL Compiler/Disassembler and Tools: 254 255 iASL: Fixed a problem where the internal input line buffer(s) could 256 overflow if there are very long lines in the input ASL source code file. 257 Implemented buffer management that automatically increases the size of 258 the buffers as necessary. 259 260 iASL: Added an option (-vx) to "expect" particular remarks, warnings and 261 errors. If the specified exception is not raised during compilation, the 262 compiler emits an error. This is intended to support the ASL test suite, 263 but may be useful in other contexts. 264 265 iASL: Implemented a new predefined macro, __METHOD__, which returns a 266 string containing the name of the current control method that is being 267 compiled. 268 269 iASL: Implemented debugger and table compiler support for the SDEI ACPI 270 table (Software Delegated Exception Interface). James Morse 271 <james.morse (a] arm.com> 272 273 Unix/Linux makefiles: Added an option to disable compile optimizations. 274 The disable occurs when the NOOPT flag is set to TRUE. 275 theracermaster (a] gmail.com 276 277 Acpidump: Added support for multiple DSDT and FACS tables. This can occur 278 when there are different tables for 32-bit versus 64-bit. 279 280 Enhanced error reporting for the ASL test suite (ASLTS) by removing 281 unnecessary/verbose text, and emit the actual line number where an error 282 has occurred. These changes are intended to improve the usefulness of the 283 test suite. 284 285 ---------------------------------------- 286 29 June 2017. Summary of changes for version 20170629: 287 288 289 1) ACPICA kernel-resident subsystem: 290 291 Tables: Implemented a deferred ACPI table verification. This is useful 292 for operating systems where the tables cannot be verified in the early 293 initialization stage due to early memory mapping limitations on some 294 architectures. Lv Zheng. 295 296 Tables: Removed the signature validation for dynamically loaded tables. 297 Provides compatibility with other ACPI implementations. Previously, only 298 SSDT tables were allowed, as per the ACPI specification. Now, any table 299 signature can be used via the Load() operator. Lv Zheng. 300 301 Tables: Fixed several mutex issues that could cause errors during table 302 acquisition. Lv Zheng. 303 304 Tables: Fixed a problem where an ACPI warning could be generated if a 305 null pointer was passed to the AcpiPutTable interface. Lv Zheng. 306 307 Tables: Added a mechanism to handle imbalances for the AcpiGetTable and 308 AcpiPutTable interfaces. This applies to the "late stage" table loading 309 when the use of AcpiPutTable is no longer required (since the system 310 memory manager is fully running and available). Lv Zheng. 311 312 Fixed/Reverted a regression during processing of resource descriptors 313 that contain only a single EndTag. Fixes an AE_AML_NO_RESOURCE_END_TAG 314 exception in this case. 315 316 Headers: IORT/SMMU support: Updated the SMMU models for Revision C of the 317 I/O Remapping specification. Robin Murphy <robin.murphy (a] arm.com> 318 319 Interpreter: Fixed a possible fault if an Alias operator with an invalid 320 or duplicate target is encountered during Alias creation in 321 AcpiExCreateAlias. Alex James <theracermaster (a] gmail.com> 322 323 Added an option to use designated initializers for function pointers. 324 Kees Cook <keescook (a] google.com> 325 326 327 2) iASL Compiler/Disassembler and Tools: 328 329 iASL: Allow compilation of External declarations with target pathnames 330 that refer to existing named objects within the table. Erik Schmauss. 331 332 iASL: Fixed a regression when compiling FieldUnits. Fixes an error if a 333 FieldUnit name also is declared via External in the same table. Erik 334 Schmauss. 335 336 iASL: Allow existing scope names within pathnames used in External 337 statements. For example: 338 External (ABCD.EFGH) // ABCD exists, but EFGH is truly external 339 Device (ABCD) 340 341 iASL: IORT ACPI table: Implemented changes required to decode the new 342 Proximity Domain for the SMMUv3 IORT. Disassembler and Data Table 343 compiler. Ganapatrao Kulkarni <ganapatrao.kulkarni (a] cavium.com> 344 345 Disassembler: Don't abort disassembly on errors from External() 346 statements. Erik Schmauss. 347 348 Disassembler: fixed a possible fault when one of the Create*Field 349 operators references a Resource Template. ACPICA Bugzilla 1396. 350 351 iASL: In the source code, resolved some naming inconsistences across the 352 parsing support. Fixes confusion between "Parse Op" and "Parse Node". 353 Adds a new file, aslparseop.c 354 355 ---------------------------------------- 356 31 May 2017. Summary of changes for version 20170531: 357 358 359 0) ACPI 6.2 support: 360 361 The ACPI specification version 6.2 has been released and is available at 362 http://uefi.org/specifications 363 364 This version of ACPICA fully supports the ACPI 6.2 specification. Changes 365 are summarized below. 366 367 New ACPI tables (Table Compiler/Disassembler/Templates): 368 HMAT (Heterogeneous Memory Attributes Table) 369 WSMT (Windows SMM Security Mitigation Table) 370 PPTT (Processor Properties Topology Table) 371 372 New subtables for existing ACPI tables: 373 HEST (New subtable, Arch-deferred machine check) 374 SRAT (New subtable, Arch-specific affinity structure) 375 PCCT (New subtables, Extended PCC subspaces (types 3 and 4)) 376 377 Simple updates for existing ACPI tables: 378 BGRT (two new flag bits) 379 HEST (New bit defined for several subtables, GHES_ASSIST) 380 381 New Resource Descriptors and Resource macros (Compiler/Disassembler): 382 PinConfig() 383 PinFunction() 384 PinGroup() 385 PinGroupConfig() 386 PinGroupFunction() 387 New type for hardware error notification (section 18.3.2.9) 388 389 New predefined names/methods (Compiler/Interpreter): 390 _HMA (Heterogeneous Memory Attributes) 391 _LSI (Label Storage Information) 392 _LSR (Label Storage Read) 393 _LSW (Label Storage Write) 394 395 ASL grammar/macro changes (Compiler): 396 For() ASL macro, implemented with the AML while operator 397 Extensions to Concatenate operator 398 Support for multiple definition blocks in same ASL file 399 Clarification for Buffer operator 400 Allow executable AML code underneath all scopes (Devices, etc.) 401 Clarification/change for the _OSI return value 402 ASL grammar update for reference operators 403 Allow a zero-length string for AML filename in DefinitionBlock 404 405 Miscellaneous: 406 New device object notification value 407 Remove a notify value (0x0C) for graceful shutdown 408 New UUIDs for processor/cache properties and 409 physical package property 410 New _HID, ACPI0014 (Wireless Power Calibration Device) 411 412 413 1) ACPICA kernel-resident subsystem: 414 415 Added support to disable ACPI events on hardware-reduced platforms. 416 Eliminates error messages of the form "Could not enable fixed event". Lv 417 Zheng 418 419 Fixed a problem using Device/Thermal objects with the ObjectType and 420 DerefOf ASL operators. This support had not been fully/properly 421 implemented. 422 423 Fixed a problem where if a Buffer object containing a resource template 424 was longer than the actual resource template, an error was generated -- 425 even though the AML is legal. This case has been seen in the field. 426 427 Fixed a problem with the header definition of the MADT PCAT_COMPAT flag. 428 The values for DUAL_PIC and MULTIPLE_APIC were reversed. 429 430 Added header file changes for the TPM2 ACPI table. Update to new version 431 of the TCG specification. Adds a new TPM2 subtable for ARM SMC. 432 433 Exported the external interfaces AcpiAcquireMutex and AcpiReleaseMutex. 434 These interfaces are intended to be used only in conjunction with the 435 predefined _DLM method (Device Lock Method). "This object appears in a 436 device scope when AML access to the device must be synchronized with the 437 OS environment". 438 439 Example Code and Data Size: These are the sizes for the OS-independent 440 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 441 debug version of the code includes the debug output trace mechanism and 442 has a much larger code and data size. 443 444 Current Release: 445 Non-Debug Version: 143.1K Code, 60.0K Data, 203.1K Total 446 Debug Version: 204.0K Code, 84.3K Data, 288.3K Total 447 Previous Release: 448 Non-Debug Version: 141.7K Code, 58.5K Data, 200.2K Total 449 Debug Version: 207.5K Code, 82.7K Data, 290.2K Total 450 451 452 2) iASL Compiler/Disassembler and Tools: 453 454 iASL: Fixed a problem where an External() declaration could not refer to 455 a Field Unit. Erik Schmauss. 456 457 Disassembler: Improved support for the Switch/Case operators. This 458 feature will disassemble AML code back to the original Switch operators 459 when possible, instead of an If..Else sequence. David Box 460 461 iASL and disassembler: Improved the handling of multiple extraneous 462 parentheses for both ASL input and disassembled ASL output. 463 464 Improved the behavior of the iASL compiler and disassembler to detect 465 improper use of external declarations 466 467 Disassembler: Now aborts immediately upon detection of an unknown AML 468 opcode. The AML parser has no real way to recover from this, and can 469 result in the creation of an ill-formed parse tree that causes errors 470 later during the disassembly. 471 472 All tools: Fixed a problem where the Unix application OSL did not handle 473 control-c correctly. For example, a control-c could incorrectly wake the 474 debugger. 475 476 AcpiExec: Improved the Control-C handling and added a handler for 477 segmentation faults (SIGSEGV). Supports both Windows and Unix-like 478 environments. 479 480 Reduced the verbosity of the generic unix makefiles. Previously, each 481 compilation displayed the full set of compiler options. This has been 482 eliminated as the options are easily inspected within the makefiles. Each 483 compilation now results in a single line of output. 484 485 ---------------------------------------- 486 03 March 2017. Summary of changes for version 20170303: 487 488 489 0) ACPICA licensing: 490 491 The licensing information at the start of each source code module has 492 been updated. In addition to the Intel license, the dual GPLv2/BSD 493 license has been added for completeness. Now, a single version of the 494 source code should be suitable for all ACPICA customers. This is the 495 major change for this release since it affects all source code modules. 496 497 498 1) ACPICA kernel-resident subsystem: 499 500 Fixed two issues with the common asltypes.h header that could cause 501 problems in some environments: (Kim Jung-uk) 502 Removed typedef for YY_BUFFER_STATE ? 503 Fixes an error with earlier versions of Flex. 504 Removed use of FILE typedef (which is only defined in stdio.h) 505 506 507 2) iASL Compiler/Disassembler and Tools: 508 509 Disassembler: fixed a regression introduced in 20170224. A fix for a 510 memory leak related to resource descriptor tags (names) could fault when 511 the disassembler was generated with 64-bit compilers. 512 513 The ASLTS test suite has been updated to implement a new testing 514 architecture. During generation of the suite from ASL source, both the 515 ASL and ASL+ compilers are now validated, as well as the disassembler 516 itself (Erik Schmauss). The architecture executes as follows: 517 518 For every ASL source module: 519 Compile (legacy ASL compilation) 520 Disassemble the resulting AML to ASL+ source code 521 Compile the new ASL+ module 522 Perform a binary compare on the legacy AML and the new ASL+ AML 523 The ASLTS suite then executes normally using the AML binaries. 524 525 ---------------------------------------- 526 24 February 2017. Summary of changes for version 20170224: 527 528 529 1) ACPICA kernel-resident subsystem: 530 531 Interpreter: Fixed two issues with the control method return value auto- 532 repair feature, where an attempt to double-delete an internal object 533 could result in an ACPICA warning (for _CID repair and others). No fault 534 occurs, however, because the attempted deletion (actually a release to an 535 internal cache) is detected and ignored via object poisoning. 536 537 Debugger: Fixed an AML interpreter mutex issue during the single stepping 538 of control methods. If certain debugger commands are executed during 539 stepping, a mutex aquire/release error could occur. Lv Zheng. 540 541 Fixed some issues generating ACPICA with the Intel C compiler by 542 restoring the original behavior and compiler-specific include file in 543 acenv.h. Lv Zheng. 544 545 Example Code and Data Size: These are the sizes for the OS-independent 546 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 547 debug version of the code includes the debug output trace mechanism and 548 has a much larger code and data size. 549 550 Current Release: 551 Non-Debug Version: 141.7K Code, 58.5K Data, 200.2K Total 552 Debug Version: 207.5K Code, 82.7K Data, 290.2K Total 553 Previous Release: 554 Non-Debug Version: 137.4K Code, 52.6K Data, 190.0K Total 555 Debug Version: 201.5K Code, 82.2K Data, 283.7K Total 556 557 558 2) iASL Compiler/Disassembler and Tools: 559 560 iASL/Disassembler: A preliminary version of a new ASL-to-ASL+ conversion 561 tool has been designed, implemented, and included in this release. The 562 key feature of this utility is that the original comments within the 563 input ASL file are preserved during the conversion process, and included 564 within the converted ASL+ file -- thus creating a transparent conversion 565 of existing ASL files to ASL+ (ASL 2.0). Erik Schmauss. 566 567 Usage: iasl -ca <ASL-filename> // Output is a .dsl file with 568 converted code 569 570 iASL/Disassembler: Improved the detection and correct disassembly of 571 Switch/Case operators. This feature detects sequences of if/elseif/else 572 operators that originated from ASL Switch/Case/Default operators and 573 emits the original operators. David Box. 574 575 iASL: Improved the IORT ACPI table support in the following areas. Lv 576 Zheng: 577 Clear MappingOffset if the MappingCount is zero. 578 Fix the disassembly of the SMMU GSU interrupt offset. 579 Update the template file for the IORT table. 580 581 Disassembler: Enhanced the detection and disassembly of resource 582 template/descriptor within a Buffer object. An EndTag descriptor is now 583 required to have a zero second byte, since all known ASL compilers emit 584 this. This helps eliminate incorrect decisions when a buffer is 585 disassembled (false positives on resource templates). 586 587 ---------------------------------------- 588 19 January 2017. Summary of changes for version 20170119: 589 590 591 1) General ACPICA software: 592 593 Entire source code base: Added the 2017 copyright to all source code 594 legal/licensing module headers and utility/tool signons. This includes 595 the standard Linux dual-license header. This affects virtually every file 596 in the ACPICA core subsystem, iASL compiler, all ACPICA utilities, and 597 the ACPICA test suite. 598 599 600 2) iASL Compiler/Disassembler and Tools: 601 602 iASL: Removed/fixed an inadvertent remark when a method argument 603 containing a reference is used as a target operand within the method (and 604 never used as a simple argument), as in the example below. Jeffrey Hugo. 605 606 dsdt.asl 1507: Store(0x1, Arg0) 607 Remark 2146 - ^ Method Argument is never used (Arg0) 608 609 All tools: Removed the bit width of the compiler that generated the tool 610 from the common signon for all user space tools. This proved to be 611 confusing and unnecessary. This includes similar removal of HARDWARE_NAME 612 from the generic makefiles (Thomas Petazzoni). Example below. 613 614 Old: 615 ASL+ Optimizing Compiler version 20170119-32 616 ASL+ Optimizing Compiler version 20170119-64 617 618 New: 619 ASL+ Optimizing Compiler version 20170119 620 621 ---------------------------------------- 622 22 December 2016. Summary of changes for version 20161222: 623 624 625 1) ACPICA kernel-resident subsystem: 626 627 AML Debugger: Implemented a new mechanism to simplify and enhance 628 debugger integration into all environments, including kernel debuggers 629 and user-space utilities, as well as remote debug services. This 630 mechanism essentially consists of new OSL interfaces to support debugger 631 initialization/termination, as well as wait/notify interfaces to perform 632 the debugger handshake with the host. Lv Zheng. 633 634 New OSL interfaces: 635 AcpiOsInitializeDebugger (void) 636 AcpiOsTerminateDebugger (void) 637 AcpiOsWaitCommandReady (void) 638 AcpiOsNotifyCommandComplete (void) 639 640 New OS services layer: 641 osgendbg.c -- Example implementation, and used for AcpiExec 642 643 Update for Generic Address Space (GAS) support: Although the AccessWidth 644 and/or BitOffset fields of the GAS are not often used, this change now 645 fully supports these fields. This affects the internal support for FADT 646 registers, registers in other ACPI data tables, and the AcpiRead and 647 AcpiWrite public interfaces. Lv Zheng. 648 649 Sleep support: In order to simplify integration of ACPI sleep for the 650 various host operating systems, a new OSL interface has been introduced. 651 AcpiOsEnterSleep allows the host to perform any required operations 652 before the final write to the sleep control register(s) is performed by 653 ACPICA. Lv Zheng. 654 655 New OSL interface: 656 AcpiOsEnterSleep(SleepState, RegisterAValue, RegisterBValue) 657 658 Called from these internal interfaces: 659 AcpiHwLegacySleep 660 AcpiHwExtendedSleep 661 662 EFI support: Added a very small EFI/ACPICA example application. Provides 663 a simple demo for EFI integration, as well as assisting with resolution 664 of issues related to customer ACPICA/EFI integration. Lv Zheng. See: 665 666 source/tools/efihello/efihello.c 667 668 Local C library: Implemented several new functions to enhance ACPICA 669 portability, for environments where these clib functions are not 670 available (such as EFI). Lv Zheng: 671 putchar 672 getchar 673 strpbrk 674 strtok 675 memmove 676 677 Fixed a regression where occasionally a valid resource descriptor was 678 incorrectly detected as invalid at runtime, and a 679 AE_AML_NO_RESOURCE_END_TAG was returned. 680 681 Fixed a problem with the recently implemented support that enables 682 control method invocations as Target operands to many ASL operators. 683 Warnings of this form: "Needed type [Reference], found [Processor]" were 684 seen at runtime for some method invocations. 685 686 Example Code and Data Size: These are the sizes for the OS-independent 687 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 688 debug version of the code includes the debug output trace mechanism and 689 has a much larger code and data size. 690 691 Current Release: 692 Non-Debug Version: 141.5K Code, 58.5K Data, 200.0K Total 693 Debug Version: 201.7K Code, 82.7K Data, 284.4K Total 694 Previous Release: 695 Non-Debug Version: 140.5K Code, 58.5K Data, 198.9K Total 696 Debug Version: 201.3K Code, 82.7K Data, 284.0K Total 697 698 699 2) iASL Compiler/Disassembler and Tools: 700 701 Disassembler: Enhanced output by adding the capability to detect and 702 disassemble ASL Switch/Case statements back to the original ASL source 703 code instead of if/else blocks. David Box. 704 705 AcpiHelp: Split a large file into separate files based upon 706 functionality/purpose. New files are: 707 ahaml.c 708 ahasl.c 709 710 ---------------------------------------- 711 17 November 2016. Summary of changes for version 20161117: 712 713 714 1) ACPICA kernel-resident subsystem: 715 716 Table Manager: Fixed a regression introduced in 20160729, "FADT support 717 cleanup". This was an attempt to remove all references in the source to 718 the FADT version 2, which never was a legal version number. It was 719 skipped because it was an early version of 64-bit support that was 720 eventually abandoned for the current 64-bit support. 721 722 Interpreter: Fixed a problem where runtime implicit conversion was 723 incorrectly disabled for the ASL operators below. This brings the 724 behavior into compliance with the ACPI specification: 725 FromBCD 726 ToBCD 727 ToDecimalString 728 ToHexString 729 ToInteger 730 ToBuffer 731 732 Table Manager: Added a new public interface, AcpiPutTable, used to 733 release and free an ACPI table returned by AcpiGetTable and related 734 interfaces. Lv Zheng. 735 736 Example Code and Data Size: These are the sizes for the OS-independent 737 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 738 debug version of the code includes the debug output trace mechanism and 739 has a much larger code and data size. 740 741 Current Release: 742 Non-Debug Version: 140.5K Code, 58.5K Data, 198.9K Total 743 Debug Version: 201.3K Code, 82.7K Data, 284.0K Total 744 Previous Release: 745 Non-Debug Version: 140.4K Code, 58.1K Data, 198.5K Total 746 Debug Version: 200.7K Code, 82.1K Data, 282.8K Total 747 748 749 2) iASL Compiler/Disassembler and Tools: 750 751 Disassembler: Fixed a regression for disassembly of Resource Template. 752 Detection of templates in the AML stream missed some types of templates. 753 754 iASL: Fixed a problem where an Access Size error was returned for the PCC 755 address space when the AccessSize of the GAS register is greater than a 756 DWORD. Hoan Tran. 757 758 iASL: Implemented several grammar changes for the operators below. These 759 changes are slated for the next version of the ACPI specification: 760 RefOf - Disallow method invocation as an operand 761 CondRefOf - Disallow method invocation as an operand 762 DerefOf - Disallow operands that use the result from operators 763 that 764 do not return a reference (Changed TermArg to 765 SuperName). 766 767 iASL: Control method invocations are now allowed for Target operands, as 768 per the ACPI specification. Removed error for using a control method 769 invocation as a Target operand. 770 771 Disassembler: Improved detection of Resource Templates, Unicode, and 772 Strings within Buffer objects. These subtypes do not contain a specific 773 opcode to indicate the originating ASL code, and they must be detected by 774 other means within the disassembler. 775 776 iASL: Implemented an optimization improvement for 32-bit ACPI tables 777 (DSDT/SSDT). For the 32-bit case only, compute the optimum integer opcode 778 only after 64-bit to 32-bit truncation. A truncation warning message is 779 still emitted, however. 780 781 AcpiXtract: Implemented handling for both types of line terminators (LF 782 or CR/LF) so that it can accept AcpiDump output files from any system. 783 Peter Wu. 784 785 AcpiBin: Added two new options for comparing AML files: 786 -a: compare and display ALL mismatches 787 -o: start compare at this offset into the second file 788 789 ---------------------------------------- 790 30 September 2016. Summary of changes for version 20160930: 791 792 793 1) ACPICA kernel-resident subsystem: 794 795 Fixed a regression in the internal AcpiTbFindTable function where a non 796 AE_OK exception could inadvertently be returned even if the function did 797 not fail. This problem affects the following operators: 798 DataTableRegion 799 LoadTable 800 801 Fixed a regression in the LoadTable operator where a load to any 802 namespace location other than the root no longer worked properly. 803 804 Increased the maximum loop count value that will result in the 805 AE_AML_INFINITE_LOOP exception. This is a mechanism that is intended to 806 prevent infinite loops within the AML interpreter and thus the host OS 807 kernel. The value is increased from 0xFFFF to 0xFFFFF loops (65,535 to 808 1,048,575). 809 810 Moved the AcpiGbl_MaxLoopIterations configuration variable to the public 811 acpixf.h file. This allows hosts to easily configure the maximum loop 812 count at runtime. 813 814 Removed an illegal character in the strtoul64.c file. This character 815 caused errors with some C compilers. 816 817 Example Code and Data Size: These are the sizes for the OS-independent 818 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 819 debug version of the code includes the debug output trace mechanism and 820 has a much larger code and data size. 821 822 Current Release: 823 Non-Debug Version: 140.4K Code, 58.1K Data, 198.5K Total 824 Debug Version: 200.7K Code, 82.1K Data, 282.8K Total 825 Previous Release: 826 Non-Debug Version: 140.0K Code, 58.1K Data, 198.1K Total 827 Debug Version: 200.3K Code, 82.1K Data, 282.4K Total 828 829 830 2) iASL Compiler/Disassembler and Tools: 831 832 Disassembler: Fixed a problem with the conversion of Else{If{ blocks into 833 the simpler ASL ElseIf keyword. During the conversion, a trailing If 834 block could be lost and missing from the disassembled output. 835 836 iASL: Fixed a missing parser rule for the ObjectType operator. For ASL+, 837 the missing rule caused a parse error when using the Index operator as an 838 operand to ObjectType. This construct now compiles properly. Example: 839 ObjectType(PKG1[4]). 840 841 iASL: Correctly handle unresolved symbols in the hardware map file (-lm 842 option). Previously, unresolved symbols could cause a protection fault. 843 Such symbols are now marked as unresolved in the map file. 844 845 iASL: Implemented support to allow control method invocations as an 846 operand to the ASL DeRefOf operator. Example: 847 DeRefOf(MTH1(Local0)) 848 849 Disassembler: Improved support for the ToPLD ASL macro. Detection of a 850 possible _PLD buffer now includes examination of both the normal buffer 851 length (16 or 20) as well as the surrounding AML package length. 852 853 Disassembler: Fixed a problem with the decoding of complex expressions 854 within the Divide operator for ASL+. For the case where both the quotient 855 and remainder targets are specified, the entire statement cannot be 856 disassembled. Previously, the output incorrectly contained a mix of ASL- 857 and ASL+ operators. This mixed statement causes a syntax error when 858 compiled. Example: 859 Divide (Add (INT1, 6), 128, RSLT, QUOT) // was incorrectly 860 disassembled to: 861 Divide (INT1 + 6, 128, RSLT, QUOT) 862 863 iASL/Tools: Added support to process AML and non-AML ACPI tables 864 consistently. For the disassembler and AcpiExec, allow all types of ACPI 865 tables (AML and data tables). For the iASL -e option, allow only AML 866 tables (DSDT/SSDT). 867 868 ---------------------------------------- 869 31 August 2016. Summary of changes for version 20160831: 870 871 872 1) ACPICA kernel-resident subsystem: 873 874 Improve support for the so-called "module-level code", which is defined 875 to be math, logical and control AML opcodes that appear outside of any 876 control method. This change improves the support by adding more opcodes 877 that can be executed in the manner. Some other issues have been solved, 878 and the ASL grammar changes to support such code under all scope 879 operators (Device, etc.) are complete. Lv Zheng. 880 881 UEFI support: these OSL functions have been implemented. This is an 882 additional step toward supporting the AcpiExec utility natively (with 883 full hardware access) under UEFI. Marcelo Ferreira. 884 AcpiOsReadPciConfiguration 885 AcpiOsWritePciConfiguration 886 887 Fixed a possible mutex error during control method auto-serialization. Lv 888 Zheng. 889 890 Updated support for the Generic Address Structure by fully implementing 891 all GAS fields when a 32-bit address is expanded to a 64-bit GAS. Lv 892 Zheng. 893 894 Updated the return value for the internal _OSI method. Instead of 895 0xFFFFFFFF, the "Ones" value is now returned, which is 0xFFFFFFFFFFFFFFFF 896 for 64-bit ACPI tables. This fixes an incompatibility with other ACPI 897 implementations, and will be reflected and clarified in the next version 898 of the ACPI specification. 899 900 Implemented two new table events that can be passed to an ACPICA table 901 handler. These events are used to indicate a table installation or 902 uninstallation. These events are used in addition to existed table load 903 and unload events. Lv Zheng. 904 905 Implemented a cleanup for all internal string-to-integer conversions. 906 Consolidate multiple versions of this functionality and limit possible 907 bases to either 10 or 16 to simplify the code. Adds a new file, 908 utstrtoul64. 909 910 Cleanup the inclusion order of the various compiler-specific headers. 911 This simplifies build configuration management. The compiler-specific 912 headers are now split out from the host-specific headers. Lv Zheng. 913 914 Example Code and Data Size: These are the sizes for the OS-independent 915 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 916 debug version of the code includes the debug output trace mechanism and 917 has a much larger code and data size. 918 919 Current Release: 920 Non-Debug Version: 140.1K Code, 58.1K Data, 198.1K Total 921 Debug Version: 200.3K Code, 82.1K Data, 282.4K Total 922 923 924 2) iASL Compiler/Disassembler and Tools: 925 926 iASL/AcpiExec: Added a command line option to display the build date/time 927 of the tool (-vd). This can be useful to verify that the correct version 928 of the tools are being used. 929 930 AML Debugger: Implemented a new subcommand ("execute predef") to execute 931 all predefined control methods and names within the current namespace. 932 This can be useful for debugging problems with ACPI tables and the ACPI 933 namespace. 934 935 ---------------------------------------- 936 29 July 2016. Summary of changes for version 20160729: 937 938 939 1) ACPICA kernel-resident subsystem: 940 941 Implemented basic UEFI support for the various ACPICA tools. This 942 includes: 943 1) An OSL to implement the various AcpiOs* interfaces on UEFI. 944 2) Support to obtain the ACPI tables on UEFI. 945 3) Local implementation of required C library functions not available on 946 UEFI. 947 4) A front-end (main) function for the tools for UEFI-related 948 initialization. 949 950 The initial deployment of this support is the AcpiDump utility executing 951 as an UEFI application via EDK2 (EDKII, "UEFI Firmware Development Kit"). 952 Current environments supported are Linux/Unix. MSVC generation is not 953 supported at this time. See the generate/efi/README file for build 954 instructions. Lv Zheng. 955 956 Future plans include porting the AcpiExec utility to execute natively on 957 the platform with I/O and memory access. This will allow viewing/dump of 958 the platform namespace and native execution of ACPI control methods that 959 access the actual hardware. To fully implement this support, the OSL 960 functions below must be implemented with UEFI interfaces. Any community 961 help in the implementation of these functions would be appreciated: 962 AcpiOsReadPort 963 AcpiOsWritePort 964 AcpiOsReadMemory 965 AcpiOsWriteMemory 966 AcpiOsReadPciConfiguration 967 AcpiOsWritePciConfiguration 968 969 Restructured and standardized the C library configuration for ACPICA, 970 resulting in the various configuration options below. This includes a 971 global restructuring of the compiler-dependent and platform-dependent 972 include files. These changes may affect the existing platform-dependent 973 configuration files on some hosts. Lv Zheng. 974 975 The current C library configuration options appear below. For any issues, 976 it may be helpful to examine the existing compiler-dependent and 977 platform-dependent files as examples. Lv Zheng. 978 979 1) Linux kernel: 980 ACPI_USE_STANDARD_HEADERS=n in order not to use system-provided C 981 library. 982 ACPI_USE_SYSTEM_CLIBRARY=y in order not to use ACPICA mini C library. 983 2) Unix/Windows/BSD applications: 984 ACPI_USE_STANDARD_HEADERS=y in order to use system-provided C 985 library. 986 ACPI_USE_SYSTEM_CLIBRARY=y in order not to use ACPICA mini C library. 987 3) UEFI applications: 988 ACPI_USE_STANDARD_HEADERS=n in order not to use system-provided C 989 library. 990 ACPI_USE_SYSTEM_CLIBRARY=n in order to use ACPICA mini C library. 991 4) UEFI applications (EDK2/StdLib): 992 ACPI_USE_STANDARD_HEADERS=y in order to use EDK2 StdLib C library. 993 ACPI_USE_SYSTEM_CLIBRARY=y in order to use EDK2 StdLib C library. 994 995 996 AML interpreter: "module-level code" support. Allows for execution of so- 997 called "executable" AML code (math/logical operations, etc.) outside of 998 control methods not just at the module level (top level) but also within 999 any scope declared outside of a control method - Scope{}, Device{}, 1000 Processor{}, PowerResource{}, and ThermalZone{}. Lv Zheng. 1001 1002 Simplified the configuration of the "maximum AML loops" global option by 1003 adding a global public variable, "AcpiGbl_MaxLoopIterations" which can be 1004 modified at runtime. 1005 1006 1007 Example Code and Data Size: These are the sizes for the OS-independent 1008 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1009 debug version of the code includes the debug output trace mechanism and 1010 has a much larger code and data size. 1011 1012 Current Release: 1013 Non-Debug Version: 139.1K Code, 22.9K Data, 162.0K Total 1014 Debug Version: 199.0K Code, 81.8K Data, 280.8K Total 1015 1016 1017 2) iASL Compiler/Disassembler and Tools: 1018 1019 iASL: Add full support for the RASF ACPI table (RAS Features Table). 1020 Includes disassembler, data table compiler, and header support. 1021 1022 iASL Expand "module-level code" support. Allows for 1023 compilation/disassembly of so-called "executable" AML code (math/logical 1024 operations, etc.) outside of control methods not just at the module level 1025 (top level) but also within any scope declared outside of a control 1026 method - Scope{}, Device{}, Processor{}, PowerResource{}, and 1027 ThermalZone{}. 1028 1029 AcpiDump: Added support for dumping all SSDTs on newer versions of 1030 Windows. These tables are now easily available -- SSDTs are not available 1031 through the registry on older versions. 1032 1033 ---------------------------------------- 1034 27 May 2016. Summary of changes for version 20160527: 1035 1036 1037 1) ACPICA kernel-resident subsystem: 1038 1039 Temporarily reverted the new arbitrary bit length/alignment support in 1040 AcpiHwRead/AcpiHwWrite for the Generic Address Structure. There have been 1041 a number of regressions with the new code that need to be fully resolved 1042 and tested before this support can be finally integrated into ACPICA. 1043 Apologies for any inconveniences these issues may have caused. 1044 1045 The ACPI message macros are not configurable (ACPI_MSG_ERROR, 1046 ACPI_MSG_EXCEPTION, ACPI_MSG_WARNING, ACPI_MSG_INFO, ACPI_MSG_BIOS_ERROR, 1047 and ACPI_MSG_BIOS_WARNING). Lv Zheng. 1048 1049 Fixed a couple of GCC warnings associated with the use of the -Wcast-qual 1050 option. Adds a new return macro, return_STR. Junk-uk Kim. 1051 1052 Example Code and Data Size: These are the sizes for the OS-independent 1053 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1054 debug version of the code includes the debug output trace mechanism and 1055 has a much larger code and data size. 1056 1057 Current Release: 1058 Non-Debug Version: 136.8K Code, 51.6K Data, 188.4K Total 1059 Debug Version: 201.5K Code, 82.2K Data, 283.7K Total 1060 Previous Release: 1061 Non-Debug Version: 137.4K Code, 52.6K Data, 190.0K Total 1062 Debug Version: 200.9K Code, 82.2K Data, 283.1K Total 1063 1064 ---------------------------------------- 1065 22 April 2016. Summary of changes for version 20160422: 1066 1067 1) ACPICA kernel-resident subsystem: 1068 1069 Fixed a regression in the GAS (generic address structure) arbitrary bit 1070 support in AcpiHwRead/AcpiHwWrite. Problem could cause incorrect behavior 1071 and incorrect return values. Lv Zheng. ACPICA BZ 1270. 1072 1073 ACPI 6.0: Added support for new/renamed resource macros. One new argument 1074 was added to each of these macros, and the original name has been 1075 deprecated. The AML disassembler will always disassemble to the new 1076 names. Support for the new macros was added to iASL, disassembler, 1077 resource manager, and the acpihelp utility. ACPICA BZ 1274. 1078 1079 I2cSerialBus -> I2cSerialBusV2 1080 SpiSerialBus -> SpiSerialBusV2 1081 UartSerialBus -> UartSerialBusV2 1082 1083 ACPI 6.0: Added support for a new integer field that was appended to the 1084 package object returned by the _BIX method. This adds iASL compile-time 1085 and AML runtime error checking. ACPICA BZ 1273. 1086 1087 ACPI 6.1: Added support for a new PCCT subtable, "HW-Reduced Comm 1088 Subspace Type2" (Headers, Disassembler, and data table compiler). 1089 1090 Example Code and Data Size: These are the sizes for the OS-independent 1091 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1092 debug version of the code includes the debug output trace mechanism and 1093 has a much larger code and data size. 1094 1095 Current Release: 1096 Non-Debug Version: 137.4K Code, 52.6K Data, 190.0K Total 1097 Debug Version: 201.5K Code, 82.2K Data, 283.7K Total 1098 Previous Release: 1099 Non-Debug Version: 137.1K Code, 51.5K Data, 188.6K Total 1100 Debug Version: 201.0K Code, 82.0K Data, 283.0K Total 1101 1102 1103 2) iASL Compiler/Disassembler and Tools: 1104 1105 iASL: Implemented an ASL grammar extension to allow/enable executable 1106 "module-level code" to be created and executed under the various 1107 operators that create new scopes. This type of AML code is already 1108 supported in all known AML interpreters, and the grammar change will 1109 appear in the next version of the ACPI specification. Simplifies the 1110 conditional runtime creation of named objects under these object types: 1111 1112 Device 1113 PowerResource 1114 Processor 1115 Scope 1116 ThermalZone 1117 1118 iASL: Implemented a new ASL extension, a "For" loop macro to add greater 1119 ease-of-use to the ASL language. The syntax is similar to the 1120 corresponding C operator, and is implemented with the existing AML While 1121 opcode -- thus requiring no changes to existing AML interpreters. 1122 1123 For (Initialize, Predicate, Update) {TermList} 1124 1125 Grammar: 1126 ForTerm := 1127 For ( 1128 Initializer // Nothing | TermArg => ComputationalData 1129 Predicate // Nothing | TermArg => ComputationalData 1130 Update // Nothing | TermArg => ComputationalData 1131 ) {TermList} 1132 1133 1134 iASL: The _HID/_ADR detection and validation has been enhanced to search 1135 under conditionals in order to allow these objects to be conditionally 1136 created at runtime. 1137 1138 iASL: Fixed several issues with the constant folding feature. The 1139 improvement allows better detection and resolution of statements that can 1140 be folded at compile time. ACPICA BZ 1266. 1141 1142 iASL/Disassembler: Fixed a couple issues with the Else{If{}...} 1143 conversion to the ASL ElseIf operator where incorrect ASL code could be 1144 generated. 1145 1146 iASL/Disassembler: Fixed a problem with the ASL+ code disassembly where 1147 sometimes an extra (and extraneous) set of parentheses were emitted for 1148 some combinations of operators. Although this did not cause any problems 1149 with recompilation of the disassembled code, it made the code more 1150 difficult to read. David Box. ACPICA BZ 1231. 1151 1152 iASL: Changed to ignore the unreferenced detection for predefined names 1153 of resource descriptor elements, when the resource descriptor is 1154 created/defined within a control method. 1155 1156 iASL: Disassembler: Fix a possible fault with externally declared Buffer 1157 objects. 1158 1159 ---------------------------------------- 1160 18 March 2016. Summary of changes for version 20160318: 1161 1162 1) ACPICA kernel-resident subsystem: 1163 1164 Added support for arbitrary bit lengths and bit offsets for registers 1165 defined by the Generic Address Structure. Previously, only aligned bit 1166 lengths of 8/16/32/64 were supported. This was sufficient for many years, 1167 but recently some machines have been seen that require arbitrary bit- 1168 level support. ACPICA BZ 1240. Lv Zheng. 1169 1170 Fixed an issue where the \_SB._INI method sometimes must be evaluated 1171 before any _REG methods are evaluated. Lv Zheng. 1172 1173 Implemented several changes related to ACPI table support 1174 (Headers/Disassembler/TableCompiler): 1175 NFIT: For ACPI 6.1, updated to add some additional new fields and 1176 constants. 1177 FADT: Updated a warning message and set compliance to ACPI 6.1 (Version 1178 6). 1179 DMAR: Added new constants per the 10/2014 DMAR spec. 1180 IORT: Added new subtable per the 10/2015 IORT spec. 1181 HEST: For ACPI 6.1, added new constants and new subtable. 1182 DBG2: Added new constants per the 12/2015 DBG2 spec. 1183 FPDT: Fixed several incorrect fields, add the FPDT boot record structure. 1184 ACPICA BZ 1249. 1185 ERST/EINJ: Updated disassembler with new "Execute Timings" actions. 1186 1187 Updated header support for the DMAR table to match the current version of 1188 the related spec. 1189 1190 Added extensions to the ASL Concatenate operator to allow any ACPI object 1191 to be passed as an operand. Any object other than Integer/String/Buffer 1192 simply returns a string containing the object type. This extends the 1193 usefulness of the Printf macros. Previously, Concatenate would abort the 1194 control method if a non-data object was encountered. 1195 1196 ACPICA source code: Deployed the C "const" keyword across the source code 1197 where appropriate. ACPICA BZ 732. Joerg Sonnenberger (NetBSD). 1198 1199 Example Code and Data Size: These are the sizes for the OS-independent 1200 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1201 debug version of the code includes the debug output trace mechanism and 1202 has a much larger code and data size. 1203 1204 Current Release: 1205 Non-Debug Version: 137.1K Code, 51.5K Data, 188.6K Total 1206 Debug Version: 201.0K Code, 82.0K Data, 283.0K Total 1207 Previous Release: 1208 Non-Debug Version: 136.2K Code, 51.5K Data, 187.7K Total 1209 Debug Version: 200.4K Code, 82.0K Data, 282.4K Total 1210 1211 1212 2) iASL Compiler/Disassembler and Tools: 1213 1214 iASL/Disassembler: Improved the heuristic used to determine the number of 1215 arguments for an externally defined control method (a method in another 1216 table). Although this is an improvement, there is no deterministic way to 1217 "guess" the number of method arguments. Only the ACPI 6.0 External opcode 1218 will completely solve this problem as it is deployed (automatically) in 1219 newer BIOS code. 1220 1221 iASL/Disassembler: Fixed an ordering issue for emitted External() ASL 1222 statements that could cause errors when the disassembled file is 1223 compiled. ACPICA BZ 1243. David Box. 1224 1225 iASL: Fixed a regression caused by the merger of the two versions of the 1226 local strtoul64. Because of a dependency on a global variable, strtoul64 1227 could return an error for integers greater than a 32-bit value. ACPICA BZ 1228 1260. 1229 1230 iASL: Fixed a regression where a fault could occur for an ASL Return 1231 statement if it invokes a control method that is not resolved. ACPICA BZ 1232 1264. 1233 1234 AcpiXtract: Improved input file validation: detection of binary files and 1235 non-acpidump text files. 1236 1237 ---------------------------------------- 1238 12 February 2016. Summary of changes for version 20160212: 1239 1240 1) ACPICA kernel-resident subsystem: 1241 1242 Implemented full support for the ACPI 6.1 specification (released in 1243 January). This version of the specification is available at: 1244 http://www.uefi.org/specifications 1245 1246 Only a relatively small number of changes were required in ACPICA to 1247 support ACPI 6.1, in these areas: 1248 - New predefined names 1249 - New _HID values 1250 - A new subtable for HEST 1251 - A few other header changes for new values 1252 1253 Ensure \_SB_._INI is executed before any _REG methods are executed. There 1254 appears to be existing BIOS code that relies on this behavior. Lv Zheng. 1255 1256 Reverted a change made in version 20151218 which enabled method 1257 invocations to be targets of various ASL operators (SuperName and Target 1258 grammar elements). While the new behavior is supported by the ACPI 1259 specification, other AML interpreters do not support this behavior and 1260 never will. The ACPI specification will be updated for ACPI 6.2 to remove 1261 this support. Therefore, the change was reverted to the original ACPICA 1262 behavior. 1263 1264 ACPICA now supports the GCC 6 compiler. 1265 1266 Current Release: (Note: build changes increased sizes) 1267 Non-Debug Version: 136.2K Code, 51.5K Data, 187.7K Total 1268 Debug Version: 200.4K Code, 82.0K Data, 282.4K Total 1269 Previous Release: 1270 Non-Debug Version: 102.7K Code, 28.4K Data, 131.1K Total 1271 Debug Version: 200.4K Code, 81.9K Data, 282.3K Total 1272 1273 1274 2) iASL Compiler/Disassembler and Tools: 1275 1276 Completed full support for the ACPI 6.0 External() AML opcode. The 1277 compiler emits an external AML opcode for each ASL External statement. 1278 This opcode is used by the disassembler to assist with the disassembly of 1279 external control methods by specifying the required number of arguments 1280 for the method. AML interpreters do not use this opcode. To ensure that 1281 interpreters do not even see the opcode, a block of one or more external 1282 opcodes is surrounded by an "If(0)" construct. As this feature becomes 1283 commonly deployed in BIOS code, the ability of disassemblers to correctly 1284 disassemble AML code will be greatly improved. David Box. 1285 1286 iASL: Implemented support for an optional cross-reference output file. 1287 The -lx option will create a the cross-reference file with the suffix 1288 "xrf". Three different types of cross-reference are created in this file: 1289 - List of object references made from within each control method 1290 - Invocation (caller) list for each user-defined control method 1291 - List of references to each non-method object in the namespace 1292 1293 iASL: Method invocations as ASL Target operands are now disallowed and 1294 flagged as errors in preparation for ACPI 6.2 (see the description of the 1295 problem above). 1296 1297 ---------------------------------------- 1298 8 January 2016. Summary of changes for version 20160108: 1299 1300 1) ACPICA kernel-resident subsystem: 1301 1302 Updated all ACPICA copyrights and signons to 2016: Added the 2016 1303 copyright to all source code module headers and utility/tool signons. 1304 This includes the standard Linux dual-license header. This affects 1305 virtually every file in the ACPICA core subsystem, iASL compiler, all 1306 ACPICA utilities, and the ACPICA test suite. 1307 1308 Fixed a regression introduced in version 20151218 concerning the 1309 execution of so-called module-level ASL/AML code. Namespace objects 1310 created under a module-level If() construct were not properly/fully 1311 entered into the namespace and could cause an interpreter fault when 1312 accessed. 1313 1314 Example Code and Data Size: These are the sizes for the OS-independent 1315 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1316 debug version of the code includes the debug output trace mechanism and 1317 has a much larger code and data size. 1318 1319 Current Release: 1320 Non-Debug Version: 102.7K Code, 28.4K Data, 131.1K Total 1321 Debug Version: 200.4K Code, 81.9K Data, 282.4K Total 1322 Previous Release: 1323 Non-Debug Version: 102.6K Code, 28.4K Data, 131.0K Total 1324 Debug Version: 200.3K Code, 81.9K Data, 282.3K Total 1325 1326 1327 2) iASL Compiler/Disassembler and Tools: 1328 1329 Fixed a problem with the compilation of the GpioIo and GpioInt resource 1330 descriptors. The _PIN field name was incorrectly defined to be an array 1331 of 32-bit values, but the _PIN values are in fact 16 bits each. This 1332 would cause incorrect bit width warnings when using Word (16-bit) fields 1333 to access the descriptors. 1334 1335 1336 ---------------------------------------- 1337 18 December 2015. Summary of changes for version 20151218: 1338 1339 1) ACPICA kernel-resident subsystem: 1340 1341 Implemented per-AML-table execution of "module-level code" as individual 1342 ACPI tables are loaded into the namespace during ACPICA initialization. 1343 In other words, any module-level code within an AML table is executed 1344 immediately after the table is loaded, instead of batched and executed 1345 after all of the tables have been loaded. This provides compatibility 1346 with other ACPI implementations. ACPICA BZ 1219. Bob Moore, Lv Zheng, 1347 David Box. 1348 1349 To fully support the feature above, the default operation region handlers 1350 for the SystemMemory, SystemIO, and PCI_Config address spaces are now 1351 installed before any ACPI tables are loaded. This enables module-level 1352 code to access these address spaces during the table load and module- 1353 level code execution phase. ACPICA BZ 1220. Bob Moore, Lv Zheng, David 1354 Box. 1355 1356 Implemented several changes to the internal _REG support in conjunction 1357 with the changes above. Also, changes to the AcpiExec/AcpiNames/Examples 1358 utilities for the changes above. Although these tools were changed, host 1359 operating systems that simply use the default handlers for SystemMemory, 1360 SystemIO, and PCI_Config spaces should not require any update. Lv Zheng. 1361 1362 For example, in the code below, DEV1 is conditionally added to the 1363 namespace by the DSDT via module-level code that accesses an operation 1364 region. The SSDT references DEV1 via the Scope operator. DEV1 must be 1365 created immediately after the DSDT is loaded in order for the SSDT to 1366 successfully reference DEV1. Previously, this code would cause an 1367 AE_NOT_EXIST exception during the load of the SSDT. Now, this code is 1368 fully supported by ACPICA. 1369 1370 DefinitionBlock ("", "DSDT", 2, "Intel", "DSDT1", 1) 1371 { 1372 OperationRegion (OPR1, SystemMemory, 0x400, 32) 1373 Field (OPR1, AnyAcc, NoLock, Preserve) 1374 { 1375 FLD1, 1 1376 } 1377 If (FLD1) 1378 { 1379 Device (\DEV1) 1380 { 1381 } 1382 } 1383 } 1384 DefinitionBlock ("", "SSDT", 2, "Intel", "SSDT1", 1) 1385 { 1386 External (\DEV1, DeviceObj) 1387 Scope (\DEV1) 1388 { 1389 } 1390 } 1391 1392 Fixed an AML interpreter problem where control method invocations were 1393 not handled correctly when the invocation was itself a SuperName argument 1394 to another ASL operator. In these cases, the method was not invoked. 1395 ACPICA BZ 1002. Affects the following ASL operators that have a SuperName 1396 argument: 1397 Store 1398 Acquire, Wait 1399 CondRefOf, RefOf 1400 Decrement, Increment 1401 Load, Unload 1402 Notify 1403 Signal, Release, Reset 1404 SizeOf 1405 1406 Implemented automatic String-to-ObjectReference conversion support for 1407 packages returned by predefined names (such as _DEP). A common BIOS error 1408 is to add double quotes around an ObjectReference namepath, which turns 1409 the reference into an unexpected string object. This support detects the 1410 problem and corrects it before the package is returned to the caller that 1411 invoked the method. Lv Zheng. 1412 1413 Implemented extensions to the Concatenate operator. Concatenate now 1414 accepts any type of object, it is not restricted to simply 1415 Integer/String/Buffer. For objects other than these 3 basic data types, 1416 the argument is treated as a string containing the name of the object 1417 type. This expands the utility of Concatenate and the Printf/Fprintf 1418 macros. ACPICA BZ 1222. 1419 1420 Cleaned up the output of the ASL Debug object. The timer() value is now 1421 optional and no longer emitted by default. Also, the basic data types of 1422 Integer/String/Buffer are simply emitted as their values, without a data 1423 type string -- since the data type is obvious from the output. ACPICA BZ 1424 1221. 1425 1426 Example Code and Data Size: These are the sizes for the OS-independent 1427 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1428 debug version of the code includes the debug output trace mechanism and 1429 has a much larger code and data size. 1430 1431 Current Release: 1432 Non-Debug Version: 102.6K Code, 28.4K Data, 131.0K Total 1433 Debug Version: 200.3K Code, 81.9K Data, 282.3K Total 1434 Previous Release: 1435 Non-Debug Version: 102.0K Code, 28.3K Data, 130.3K Total 1436 Debug Version: 199.6K Code, 81.8K Data, 281.4K Total 1437 1438 1439 2) iASL Compiler/Disassembler and Tools: 1440 1441 iASL: Fixed some issues with the ASL Include() operator. This operator 1442 was incorrectly defined in the iASL parser rules, causing a new scope to 1443 be opened for the code within the include file. This could lead to 1444 several issues, including allowing ASL code that is technically illegal 1445 and not supported by AML interpreters. Note, this does not affect the 1446 related #include preprocessor operator. ACPICA BZ 1212. 1447 1448 iASL/Disassembler: Implemented support for the ASL ElseIf operator. This 1449 operator is essentially an ASL macro since there is no AML opcode 1450 associated with it. The code emitted by the iASL compiler for ElseIf is 1451 an Else opcode followed immediately by an If opcode. The disassembler 1452 will now emit an ElseIf if it finds an Else immediately followed by an 1453 If. This simplifies the decoded ASL, especially for deeply nested 1454 If..Else and large Switch constructs. Thus, the disassembled code more 1455 closely follows the original source ASL. ACPICA BZ 1211. Example: 1456 1457 Old disassembly: 1458 Else 1459 { 1460 If (Arg0 == 0x02) 1461 { 1462 Local0 = 0x05 1463 } 1464 } 1465 1466 New disassembly: 1467 ElseIf (Arg0 == 0x02) 1468 { 1469 Local0 = 0x05 1470 } 1471 1472 AcpiExec: Added support for the new module level code behavior and the 1473 early region installation. This required a small change to the 1474 initialization, since AcpiExec must install its own operation region 1475 handlers. 1476 1477 AcpiExec: Added support to make the debug object timer optional. Default 1478 is timer disabled. This cleans up the debug object output -- the timer 1479 data is rarely used. 1480 1481 AcpiExec: Multiple ACPI tables are now loaded in the order that they 1482 appear on the command line. This can be important when there are 1483 interdependencies/references between the tables. 1484 1485 iASL/Templates. Add support to generate template files with multiple 1486 SSDTs within a single output file. Also added ommand line support to 1487 specify the number of SSDTs (in addition to a single DSDT). ACPICA BZ 1488 1223, 1225. 1489 1490 1491 ---------------------------------------- 1492 24 November 2015. Summary of changes for version 20151124: 1493 1494 1) ACPICA kernel-resident subsystem: 1495 1496 Fixed a possible regression for a previous update to FADT handling. The 1497 FADT no longer has a fixed table ID, causing some issues with code that 1498 was hardwired to a specific ID. Lv Zheng. 1499 1500 Fixed a problem where the method auto-serialization could interfere with 1501 the current SyncLevel. This change makes the auto-serialization support 1502 transparent to the SyncLevel support and management. 1503 1504 Removed support for the _SUB predefined name in AcpiGetObjectInfo. This 1505 interface is intended for early access to the namespace during the 1506 initial namespace device discovery walk. The _SUB method has been seen to 1507 access operation regions in some cases, causing errors because the 1508 operation regions are not fully initialized. 1509 1510 AML Debugger: Fixed some issues with the terminate/quit/exit commands 1511 that can cause faults. Lv Zheng. 1512 1513 AML Debugger: Add thread ID support so that single-step mode only applies 1514 to the AML Debugger thread. This prevents runtime errors within some 1515 kernels. Lv Zheng. 1516 1517 Eliminated extraneous warnings from AcpiGetSleepTypeData. Since the _Sx 1518 methods that are invoked by this interface are optional, removed warnings 1519 emitted for the case where one or more of these methods do not exist. 1520 ACPICA BZ 1208, original change by Prarit Bhargava. 1521 1522 Made a major pass through the entire ACPICA source code base to 1523 standardize formatting that has diverged a bit over time. There are no 1524 functional changes, but this will of course cause quite a few code 1525 differences from the previous ACPICA release. 1526 1527 Example Code and Data Size: These are the sizes for the OS-independent 1528 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1529 debug version of the code includes the debug output trace mechanism and 1530 has a much larger code and data size. 1531 1532 Current Release: 1533 Non-Debug Version: 102.0K Code, 28.3K Data, 130.3K Total 1534 Debug Version: 199.6K Code, 81.8K Data, 281.4K Total 1535 Previous Release: 1536 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total 1537 Debug Version: 199.3K Code, 81.4K Data, 280.7K Total 1538 1539 1540 2) iASL Compiler/Disassembler and Tools: 1541 1542 iASL/acpiexec/acpixtract/disassembler: Added support to allow multiple 1543 definition blocks within a single ASL file and the resulting AML file. 1544 Support for this type of file was also added to the various tools that 1545 use binary AML files: acpiexec, acpixtract, and the AML disassembler. The 1546 example code below shows two definition blocks within the same file: 1547 1548 DefinitionBlock ("dsdt.aml", "DSDT", 2, "Intel", "Template", 1549 0x12345678) 1550 { 1551 } 1552 DefinitionBlock ("", "SSDT", 2, "Intel", "Template", 0xABCDEF01) 1553 { 1554 } 1555 1556 iASL: Enhanced typechecking for the Name() operator. All expressions for 1557 the value of the named object must be reduced/folded to a single constant 1558 at compile time, as per the ACPI specification (the AML definition of 1559 Name()). 1560 1561 iASL: Fixed some code indentation issues for the -ic and -ia options (C 1562 and assembly headers). Now all emitted code correctly begins in column 1. 1563 1564 iASL: Added an error message for an attempt to open a Scope() on an 1565 object defined in an SSDT. The DSDT is always loaded into the namespace 1566 first, so any attempt to open a Scope on an SSDT object will fail at 1567 runtime. 1568 1569 1570 ---------------------------------------- 1571 30 September 2015. Summary of changes for version 20150930: 1572 1573 1) ACPICA kernel-resident subsystem: 1574 1575 Debugger: Implemented several changes and bug fixes to assist support for 1576 the in-kernel version of the AML debugger. Lv Zheng. 1577 - Fix the "predefined" command for in-kernel debugger. 1578 - Do not enter debug command loop for the help and version commands. 1579 - Disallow "execute" command during execution/single-step of a method. 1580 1581 Interpreter: Updated runtime typechecking for all operators that have 1582 target operands. The operand is resolved and validated that it is legal. 1583 For example, the target cannot be a non-data object such as a Device, 1584 Mutex, ThermalZone, etc., as per the ACPI specification. 1585 1586 Debugger: Fixed the double-mutex user I/O handshake to work when local 1587 deadlock detection is enabled. 1588 1589 Debugger: limited display of method locals and arguments (LocalX and 1590 ArgX) to only those that have actually been initialized. This prevents 1591 lines of extraneous output. 1592 1593 Updated the definition of the NFIT table to correct the bit polarity of 1594 one flag: ACPI_NFIT_MEM_ARMED --> ACPI_NFIT_MEM_NOT_ARMED 1595 1596 Example Code and Data Size: These are the sizes for the OS-independent 1597 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1598 debug version of the code includes the debug output trace mechanism and 1599 has a much larger code and data size. 1600 1601 Current Release: 1602 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total 1603 Debug Version: 199.3K Code, 81.4K Data, 280.7K Total 1604 Previous Release: 1605 Non-Debug Version: 101.3K Code, 27.7K Data, 129.0K Total 1606 Debug Version: 198.6K Code, 80.9K Data, 279.5K Total 1607 1608 1609 2) iASL Compiler/Disassembler and Tools: 1610 1611 iASL: Improved the compile-time typechecking for operands of many of the 1612 ASL operators: 1613 1614 -- Added an option to disable compiler operand/operator typechecking (- 1615 ot). 1616 1617 -- For the following operators, the TermArg operands are now validated 1618 when possible to be Integer data objects: BankField, OperationRegion, 1619 DataTableRegion, Buffer, and Package. 1620 1621 -- Store (Source, Target): Both the source and target operands are 1622 resolved and checked that the operands are both legal. For example, 1623 neither operand can be a non-data object such as a Device, Mutex, 1624 ThermalZone, etc. Note, as per the ACPI specification, the CopyObject 1625 operator can be used to store an object to any type of target object. 1626 1627 -- Store (Source, Target): If the source is a Package object, the target 1628 must be a Package object, LocalX, ArgX, or Debug. Likewise, if the target 1629 is a Package, the source must also be a Package. 1630 1631 -- Store (Source, Target): A warning is issued if the source and target 1632 resolve to the identical named object. 1633 1634 -- Store (Source, <method invocation>): An error is generated for the 1635 target method invocation, as this construct is not supported by the AML 1636 interpreter. 1637 1638 -- For all ASL math and logic operators, the target operand must be a 1639 data object (Integer, String, Buffer, LocalX, ArgX, or Debug). This 1640 includes the function return value also. 1641 1642 -- External declarations are also included in the typechecking where 1643 possible. External objects defined using the UnknownObj keyword cannot be 1644 typechecked, however. 1645 1646 iASL and Disassembler: Added symbolic (ASL+) support for the ASL Index 1647 operator: 1648 - Legacy code: Index(PKG1, 3) 1649 - New ASL+ code: PKG1[3] 1650 This completes the ACPI 6.0 ASL+ support as it was the only operator not 1651 supported. 1652 1653 iASL: Fixed the file suffix for the preprocessor output file (.i). Two 1654 spaces were inadvertently appended to the filename, causing file access 1655 and deletion problems on some systems. 1656 1657 ASL Test Suite (ASLTS): Updated the master makefile to generate all 1658 possible compiler output files when building the test suite -- thus 1659 exercising these features of the compiler. These files are automatically 1660 deleted when the test suite exits. 1661 1662 1663 ---------------------------------------- 1664 18 August 2015. Summary of changes for version 20150818: 1665 1666 1) ACPICA kernel-resident subsystem: 1667 1668 Fix a regression for AcpiGetTableByIndex interface causing it to fail. Lv 1669 Zheng. ACPICA BZ 1186. 1670 1671 Completed development to ensure that the ACPICA Disassembler and Debugger 1672 are fully standalone components of ACPICA. Removed cross-component 1673 dependences. Lv Zheng. 1674 1675 The max-number-of-AML-loops is now runtime configurable (previously was 1676 compile-time only). This is essentially a loop timeout to force-abort 1677 infinite AML loops. ACPCIA BZ 1192. 1678 1679 Debugger: Cleanup output to dump ACPI names and namepaths without any 1680 trailing underscores. Lv Zheng. ACPICA BZ 1135. 1681 1682 Removed unnecessary conditional compilations across the Debugger and 1683 Disassembler components where entire modules could be left uncompiled. 1684 1685 The aapits test is deprecated and has been removed from the ACPICA git 1686 tree. The test has never been completed and has not been maintained, thus 1687 becoming rather useless. ACPICA BZ 1015, 794. 1688 1689 A batch of small changes to close bugzilla and other reports: 1690 - Remove duplicate code for _PLD processing. ACPICA BZ 1176. 1691 - Correctly cleanup after a ACPI table load failure. ACPICA BZ 1185. 1692 - iASL: Support POSIX yacc again in makefile. Jung-uk Kim. 1693 - ACPI table support: general cleanup and simplification. Lv Zheng, Bob 1694 Moore. 1695 - ACPI table support: fix for a buffer read overrun in AcpiTbFindTable. 1696 ACPICA BZ 1184. 1697 - Enhance parameter validation for DataTableRegion and LoadTable ASL/AML 1698 operators. 1699 - Debugger: Split debugger initialization/termination interfaces. Lv 1700 Zheng. 1701 - AcpiExec: Emit OemTableId for SSDTs during the load phase for table 1702 identification. 1703 - AcpiExec: Add debug message during _REG method phase during table 1704 load/init. 1705 - AcpiNames: Fix a regression where some output was missing and no longer 1706 emitted. 1707 - Debugger: General cleanup and simplification. Lv Zheng. 1708 - Disassembler: Cleanup use of several global option variables. Lv Zheng. 1709 1710 Example Code and Data Size: These are the sizes for the OS-independent 1711 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1712 debug version of the code includes the debug output trace mechanism and 1713 has a much larger code and data size. 1714 1715 Current Release: 1716 Non-Debug Version: 101.3K Code, 27.7K Data, 129.0K Total 1717 Debug Version: 198.6K Code, 80.9K Data, 279.5K Total 1718 Previous Release: 1719 Non-Debug Version: 100.9K Code, 24.5K Data, 125.4K Total 1720 Debug Version: 197.8K Code, 81.5K Data, 279.3K Total 1721 1722 1723 2) iASL Compiler/Disassembler and Tools: 1724 1725 AcpiExec: Fixed a problem where any more than 32 ACPI tables in the XSDT 1726 were not handled properly and caused load errors. Now, properly invoke 1727 and use the ACPICA auto-reallocate mechanism for ACPI table data 1728 structures. ACPICA BZ 1188 1729 1730 AcpiNames: Add command-line wildcard support for ACPI table files. ACPICA 1731 BZ 1190. 1732 1733 AcpiExec and AcpiNames: Add -l option to load ACPI tables only. For 1734 AcpiExec, this means that no control methods (like _REG/_INI/_STA) are 1735 executed during initialization. ACPICA BZ 1187, 1189. 1736 1737 iASL/Disassembler: Implemented a prototype "listing" mode that emits AML 1738 that corresponds to each disassembled ASL statement, to simplify 1739 debugging. ACPICA BZ 1191. 1740 1741 Debugger: Add option to the "objects" command to display a summary of the 1742 current namespace objects (Object type and count). This is displayed if 1743 the command is entered with no arguments. 1744 1745 AcpiNames: Add -x option to specify debug level, similar to AcpiExec. 1746 1747 1748 ---------------------------------------- 1749 17 July 2015. Summary of changes for version 20150717: 1750 1751 1) ACPICA kernel-resident subsystem: 1752 1753 Improved the partitioning between the Debugger and Disassembler 1754 components. This allows the Debugger to be used standalone within kernel 1755 code without the Disassembler (which is used for single stepping also). 1756 This renames and moves one file, dmobject.c to dbobject.c. Lv Zheng. 1757 1758 Debugger: Implemented a new command to trace the execution of control 1759 methods (Trace). This is especially useful for the in-kernel version of 1760 the debugger when file I/O may not be available for method trace output. 1761 See the ACPICA reference for more information. Lv Zheng. 1762 1763 Moved all C library prototypes (used for the local versions of these 1764 functions when requested) to a new header, acclib.h 1765 Cleaned up the use of non-ANSI C library functions. These functions are 1766 implemented locally in ACPICA. Moved all such functions to a common 1767 source file, utnonansi.c 1768 1769 Debugger: Fixed a problem with the "!!" command (get last command 1770 executed) where the debugger could enter an infinite loop and eventually 1771 crash. 1772 1773 Removed the use of local macros that were used for some of the standard C 1774 library functions to automatically cast input parameters. This mostly 1775 affected the is* functions where the input parameter is defined to be an 1776 int. This required a few modifications to the main ACPICA source code to 1777 provide casting for these functions and eliminate possible compiler 1778 warnings for these parameters. 1779 1780 Across the source code, added additional status/error checking to resolve 1781 issues discovered by static source code analysis tools such as Coverity. 1782 1783 Example Code and Data Size: These are the sizes for the OS-independent 1784 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1785 debug version of the code includes the debug output trace mechanism and 1786 has a much larger code and data size. 1787 1788 Current Release: 1789 Non-Debug Version: 100.9K Code, 24.5K Data, 125.4K Total 1790 Debug Version: 197.8K Code, 81.5K Data, 279.3K Total 1791 Previous Release: 1792 Non-Debug Version: 100.6K Code, 27.6K Data, 128.2K Total 1793 Debug Version: 196.2K Code, 81.0K Data, 277.2K Total 1794 1795 1796 2) iASL Compiler/Disassembler and Tools: 1797 1798 iASL: Fixed a regression where the device map file feature no longer 1799 worked properly when used in conjunction with the disassembler. It only 1800 worked properly with the compiler itself. 1801 1802 iASL: Implemented a new warning for method LocalX variables that are set 1803 but never used (similar to a C compiler such as gcc). This also applies 1804 to ArgX variables that are not defined by the parent method, and are 1805 instead (legally) used as local variables. 1806 1807 iASL/Preprocessor: Finished the pass-through of line numbers from the 1808 preprocessor to the compiler. This ensures that compiler errors/warnings 1809 have the correct original line numbers and filenames, regardless of any 1810 #include files. 1811 1812 iASL/Preprocessor: Fixed a couple of issues with comment handling and the 1813 pass-through of comments to the preprocessor output file (which becomes 1814 the compiler input file). Also fixed a problem with // comments that 1815 appear after a math expression. 1816 1817 iASL: Added support for the TCPA server table to the table compiler and 1818 template generator. (The client table was already previously supported) 1819 1820 iASL/Preprocessor: Added a permanent #define of the symbol "__IASL__" to 1821 identify the iASL compiler. 1822 1823 Cleaned up the use of the macros NEGATIVE and POSITIVE which were defined 1824 multiple times. The new names are ACPI_SIGN_NEGATIVE and 1825 ACPI_SIGN_POSITIVE. 1826 1827 AcpiHelp: Update to expand help messages for the iASL preprocessor 1828 directives. 1829 1830 1831 ---------------------------------------- 1832 19 June 2015. Summary of changes for version 20150619: 1833 1834 Two regressions in version 20150616 have been addressed: 1835 1836 Fixes some problems/issues with the C library macro removal (ACPI_STRLEN, 1837 etc.) This update changes ACPICA to only use the standard headers for 1838 functions, or the prototypes for the local versions of the C library 1839 functions. Across the source code, this required some additional casts 1840 for some Clib invocations for portability. Moved all local prototypes to 1841 a new file, acclib.h 1842 1843 Fixes several problems with recent changes to the handling of the FACS 1844 table that could cause some systems not to boot. 1845 1846 1847 ---------------------------------------- 1848 16 June 2015. Summary of changes for version 20150616: 1849 1850 1851 1) ACPICA kernel-resident subsystem: 1852 1853 Across the entire ACPICA source code base, the various macros for the C 1854 library functions (such as ACPI_STRLEN, etc.) have been removed and 1855 replaced by the standard C library names (strlen, etc.) The original 1856 purpose for these macros is no longer applicable. This simplification 1857 reduces the number of macros used in the ACPICA source code 1858 significantly, improving readability and maintainability. 1859 1860 Implemented support for a new ACPI table, the OSDT. This table, the 1861 "override" SDT, can be loaded directly by the host OS at boot time. It 1862 enables the replacement of existing namespace objects that were installed 1863 via the DSDT and/or SSDTs. The primary purpose for this is to replace 1864 buggy or incorrect ASL/AML code obtained via the BIOS. The OSDT is slated 1865 for inclusion in a future version of the ACPI Specification. Lv Zheng/Bob 1866 Moore. 1867 1868 Added support for systems with (improperly) two FACS tables -- a "32-bit" 1869 table (via FADT 32-bit legacy field) and a "64-bit" table (via the 64-bit 1870 X field). This change will support both automatically. There continues to 1871 be systems found with this issue. This support requires a change to the 1872 AcpiSetFirmwareWakingVector interface. Also, a public global variable has 1873 been added to allow the host to select which FACS is desired 1874 (AcpiGbl_Use32BitFacsAddresses). See the ACPICA reference for more 1875 details Lv Zheng. 1876 1877 Added a new feature to allow for systems that do not contain an FACS. 1878 Although this is already supported on hardware-reduced platforms, the 1879 feature has been extended for all platforms. The reasoning is that we do 1880 not want to abort the entire ACPICA initialization just because the 1881 system is seriously buggy and has no FACS. 1882 1883 Fixed a problem where the GUID strings for NFIT tables (in acuuid.h) were 1884 not correctly transcribed from the ACPI specification in ACPICA version 1885 20150515. 1886 1887 Implemented support for the _CLS object in the AcpiGetObjectInfo external 1888 interface. 1889 1890 Updated the definitions of the TCPA and TPM2 ACPI tables to the more 1891 recent TCG ACPI Specification, December 14, 2014. Table disassembler and 1892 compiler also updated. Note: The TCPA "server" table is not supported by 1893 the disassembler/table-compiler at this time. 1894 1895 ACPI 6.0: Added definitions for the new GIC version field in the MADT. 1896 1897 Example Code and Data Size: These are the sizes for the OS-independent 1898 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1899 debug version of the code includes the debug output trace mechanism and 1900 has a much larger code and data size. 1901 1902 Current Release: 1903 Non-Debug Version: 100.6K Code, 27.6K Data, 128.2K Total 1904 Debug Version: 196.2K Code, 81.0K Data, 277.2K Total 1905 Previous Release: 1906 Non-Debug Version: 99.9K Code, 27.5K Data, 127.4K Total 1907 Debug Version: 195.2K Code, 80.8K Data, 276.0K Total 1908 1909 1910 2) iASL Compiler/Disassembler and Tools: 1911 1912 Disassembler: Fixed a problem with the new symbolic operator disassembler 1913 where incorrect ASL code could be emitted in some cases for the "non- 1914 commutative" operators -- Subtract, Divide, Modulo, ShiftLeft, and 1915 ShiftRight. The actual problem cases seem to be rather unusual in common 1916 ASL code, however. David Box. 1917 1918 Modified the linux version of acpidump to obtain ACPI tables from not 1919 just /dev/mem (which may not exist) and /sys/firmware/acpi/tables. Lv 1920 Zheng. 1921 1922 iASL: Fixed a problem where the user preprocessor output file (.i) 1923 contained extra data that was not expected. The compiler was using this 1924 file as a temporary file and passed through #line directives in order to 1925 keep compiler error messages in sync with the input file and line number 1926 across multiple include files. The (.i) is no longer a temporary file as 1927 the compiler uses a new, different file for the original purpose. 1928 1929 iASL: Fixed a problem where comments within the original ASL source code 1930 file were not passed through to the preprocessor output file, nor any 1931 listing files. 1932 1933 iASL: Fixed some issues for the handling of the "#include" preprocessor 1934 directive and the similar (but not the same) "Include" ASL operator. 1935 1936 iASL: Add support for the new OSDT in both the disassembler and compiler. 1937 1938 iASL: Fixed a problem with the constant folding support where a Buffer 1939 object could be incorrectly generated (incorrectly formed) during a 1940 conversion to a Store() operator. 1941 1942 AcpiHelp: Updated for new NFIT GUIDs, "External" AML opcode, and new 1943 description text for the _REV predefined name. _REV now permanently 1944 returns 2, as per the ACPI 6.0 specification. 1945 1946 Debugger: Enhanced the output of the Debug ASL object for references 1947 produced by the Index operator. For Buffers and strings, only output the 1948 actual byte pointed to by the index. For packages, only print the single 1949 package element decoded by the index. Previously, the entire 1950 buffer/string/package was emitted. 1951 1952 iASL/Table-compiler: Fixed a regression where the "generic" data types 1953 were no longer recognized, causing errors. 1954 1955 1956 ---------------------------------------- 1957 15 May 2015. Summary of changes for version 20150515: 1958 1959 This release implements most of ACPI 6.0 as described below. 1960 1961 1) ACPICA kernel-resident subsystem: 1962 1963 Implemented runtime argument checking and return value checking for all 1964 new ACPI 6.0 predefined names. This includes: _BTH, _CR3, _DSD, _LPI, 1965 _MTL, _PRR, _RDI, _RST, _TFP, _TSN. 1966 1967 Example Code and Data Size: These are the sizes for the OS-independent 1968 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1969 debug version of the code includes the debug output trace mechanism and 1970 has a much larger code and data size. 1971 1972 Current Release: 1973 Non-Debug Version: 99.9K Code, 27.5K Data, 127.4K Total 1974 Debug Version: 195.2K Code, 80.8K Data, 276.0K Total 1975 Previous Release: 1976 Non-Debug Version: 99.1K Code, 27.3K Data, 126.4K Total 1977 Debug Version: 192.8K Code, 79.9K Data, 272.7K Total 1978 1979 1980 2) iASL Compiler/Disassembler and Tools: 1981 1982 iASL compiler: Added compile-time support for all new ACPI 6.0 predefined 1983 names (argument count validation and return value typechecking.) 1984 1985 iASL disassembler and table compiler: implemented support for all new 1986 ACPI 6.0 tables. This includes: DRTM, IORT, LPIT, NFIT, STAO, WPBT, XENV. 1987 1988 iASL disassembler and table compiler: Added ACPI 6.0 changes to existing 1989 tables: FADT, MADT. 1990 1991 iASL preprocessor: Added a new directive to enable inclusion of binary 1992 blobs into ASL code. The new directive is #includebuffer. It takes a 1993 binary file as input and emits a named ascii buffer object into the ASL 1994 code. 1995 1996 AcpiHelp: Added support for all new ACPI 6.0 predefined names. 1997 1998 AcpiHelp: Added a new option, -d, to display all iASL preprocessor 1999 directives. 2000 2001 AcpiHelp: Added a new option, -t, to display all known/supported ACPI 2002 tables. 2003 2004 2005 ---------------------------------------- 2006 10 April 2015. Summary of changes for version 20150410: 2007 2008 Reverted a change introduced in version 20150408 that caused 2009 a regression in the disassembler where incorrect operator 2010 symbols could be emitted. 2011 2012 2013 ---------------------------------------- 2014 08 April 2015. Summary of changes for version 20150408: 2015 2016 2017 1) ACPICA kernel-resident subsystem: 2018 2019 Permanently set the return value for the _REV predefined name. It now 2020 returns 2 (was 5). This matches other ACPI implementations. _REV will be 2021 deprecated in the future, and is now defined to be 1 for ACPI 1.0, and 2 2022 for ACPI 2.0 and later. It should never be used to differentiate or 2023 identify operating systems. 2024 2025 Added the "Windows 2015" string to the _OSI support. ACPICA will now 2026 return TRUE to a query with this string. 2027 2028 Fixed several issues with the local version of the printf function. 2029 2030 Added the C99 compiler option (-std=c99) to the Unix makefiles. 2031 2032 Current Release: 2033 Non-Debug Version: 99.9K Code, 27.4K Data, 127.3K Total 2034 Debug Version: 195.2K Code, 80.7K Data, 275.9K Total 2035 Previous Release: 2036 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total 2037 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total 2038 2039 2040 2) iASL Compiler/Disassembler and Tools: 2041 2042 iASL: Implemented an enhancement to the constant folding feature to 2043 transform the parse tree to a simple Store operation whenever possible: 2044 Add (2, 3, X) ==> is converted to: Store (5, X) 2045 X = 2 + 3 ==> is converted to: Store (5, X) 2046 2047 Updated support for the SLIC table (Software Licensing Description Table) 2048 in both the Data Table compiler and the disassembler. The SLIC table 2049 support now conforms to "Microsoft Software Licensing Tables (SLIC and 2050 MSDM). November 29, 2011. Copyright 2011 Microsoft". Note: Any SLIC data 2051 following the ACPI header is now defined to be "Proprietary Data", and as 2052 such, can only be entered or displayed as a hex data block. 2053 2054 Implemented full support for the MSDM table as described in the document 2055 above. Note: The format of MSDM is similar to SLIC. Any MSDM data 2056 following the ACPI header is defined to be "Proprietary Data", and can 2057 only be entered or displayed as a hex data block. 2058 2059 Implemented the -Pn option for the iASL Table Compiler (was only 2060 implemented for the ASL compiler). This option disables the iASL 2061 preprocessor. 2062 2063 Disassembler: For disassembly of Data Tables, added a comment field 2064 around the Ascii equivalent data that is emitted as part of the "Raw 2065 Table Data" block. This prevents the iASL Preprocessor from possible 2066 confusion if/when the table is compiled. 2067 2068 Disassembler: Added an option (-df) to force the disassembler to assume 2069 that the table being disassembled contains valid AML. This feature is 2070 useful for disassembling AML files that contain ACPI signatures other 2071 than DSDT or SSDT (such as OEMx or other signatures). 2072 2073 Changes for the EFI version of the tools: 2074 1) Fixed a build error/issue 2075 2) Fixed a cast warning 2076 2077 iASL: Fixed a path issue with the __FILE__ operator by making the 2078 directory prefix optional within the internal SplitInputFilename 2079 function. 2080 2081 Debugger: Removed some unused global variables. 2082 2083 Tests: Updated the makefile for proper generation of the AAPITS suite. 2084 2085 2086 ---------------------------------------- 2087 04 February 2015. Summary of changes for version 20150204: 2088 2089 ACPICA kernel-resident subsystem: 2090 2091 Updated all ACPICA copyrights and signons to 2014. Added the 2014 2092 copyright to all module headers and signons, including the standard Linux 2093 header. This affects virtually every file in the ACPICA core subsystem, 2094 iASL compiler, all ACPICA utilities, and the test suites. 2095 2096 Events: Introduce ACPI_GPE_DISPATCH_RAW_HANDLER to fix GPE storm issues. 2097 A raw gpe handling mechanism was created to allow better handling of GPE 2098 storms that aren't easily managed by the normal handler. The raw handler 2099 allows disabling/renabling of the the GPE so that interrupt storms can be 2100 avoided in cases where events cannot be timely serviced. In this 2101 scenario, handlers should use the AcpiSetGpe() API to disable/enable the 2102 GPE. This API will leave the reference counts undisturbed, thereby 2103 preventing unintentional clearing of the GPE when the intent in only to 2104 temporarily disable it. Raw handlers allow enabling and disabling of a 2105 GPE by removing GPE register locking. As such, raw handlers much provide 2106 their own locks while using GPE API's to protect access to GPE data 2107 structures. 2108 Lv Zheng 2109 2110 Events: Always modify GPE registers under the GPE lock. 2111 Applies GPE lock around AcpiFinishGpe() to protect access to GPE register 2112 values. Reported as bug by joe.liu (a] apple.com. 2113 2114 Unix makefiles: Separate option to disable optimizations and 2115 _FORTIFY_SOURCE. This change removes the _FORTIFY_SOURCE flag from the 2116 NOOPT disable option and creates a separate flag (NOFORTIFY) for this 2117 purpose. Some toolchains may define _FORTIFY_SOURCE which leads redefined 2118 errors when building ACPICA. This allows disabling the option without 2119 also having to disable optimazations. 2120 David Box 2121 2122 Current Release: 2123 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total 2124 Debug Version: 199.2K Code, 82.4K Data, 281.6K Total 2125 2126 -- 2127 -------------------------------------- 2128 07 November 2014. Summary of changes for version 20141107: 2129 2130 This release is available at https://acpica.org/downloads 2131 2132 This release introduces and implements language extensions to ASL that 2133 provide support for symbolic ("C-style") operators and expressions. These 2134 language extensions are known collectively as ASL+. 2135 2136 2137 1) iASL Compiler/Disassembler and Tools: 2138 2139 Disassembler: Fixed a problem with disassembly of the UartSerialBus 2140 macro. Changed "StopBitsNone" to the correct "StopBitsZero". David E. 2141 Box. 2142 2143 Disassembler: Fixed the Unicode macro support to add escape sequences. 2144 All non-printable ASCII values are emitted as escape sequences, as well 2145 as the standard escapes for quote and backslash. Ensures that the 2146 disassembled macro can be correctly recompiled. 2147 2148 iASL: Added Printf/Fprintf macros for formatted output. These macros are 2149 translated to existing AML Concatenate and Store operations. Printf 2150 writes to the ASL Debug object. Fprintf allows the specification of an 2151 ASL name as the target. Only a single format specifier is required, %o, 2152 since the AML interpreter dynamically converts objects to the required 2153 type. David E. Box. 2154 2155 (old) Store (Concatenate (Concatenate (Concatenate (Concatenate 2156 (Concatenate (Concatenate (Concatenate ("", Arg0), 2157 ": Unexpected value for "), Arg1), ", "), Arg2), 2158 " at line "), Arg3), Debug) 2159 2160 (new) Printf ("%o: Unexpected value for %o, %o at line %o", 2161 Arg0, Arg1, Arg2, Arg3) 2162 2163 (old) Store (Concatenate (Concatenate (Concatenate (Concatenate 2164 ("", Arg1), ": "), Arg0), " Successful"), STR1) 2165 2166 (new) Fprintf (STR1, "%o: %o Successful", Arg1, Arg0) 2167 2168 iASL: Added debug options (-bp, -bt) to dynamically prune levels of the 2169 ASL parse tree before the AML code is generated. This allows blocks of 2170 ASL code to be removed in order to help locate and identify problem 2171 devices and/or code. David E. Box. 2172 2173 AcpiExec: Added support (-fi) for an optional namespace object 2174 initialization file. This file specifies initial values for namespace 2175 objects as necessary for debugging and testing different ASL code paths 2176 that may be taken as a result of BIOS options. 2177 2178 2179 2) Overview of symbolic operator support for ASL (ASL+) 2180 ------------------------------------------------------- 2181 2182 As an extension to the ASL language, iASL implements support for symbolic 2183 (C-style) operators for math and logical expressions. This can greatly 2184 simplify ASL code as well as improve both readability and 2185 maintainability. These language extensions can exist concurrently with 2186 all legacy ASL code and expressions. 2187 2188 The symbolic extensions are 100% compatible with existing AML 2189 interpreters, since no new AML opcodes are created. To implement the 2190 extensions, the iASL compiler transforms the symbolic expressions into 2191 the legacy ASL/AML equivalents at compile time. 2192 2193 Full symbolic expressions are supported, along with the standard C 2194 precedence and associativity rules. 2195 2196 Full disassembler support for the symbolic expressions is provided, and 2197 creates an automatic migration path for existing ASL code to ASL+ code 2198 via the disassembly process. By default, the disassembler now emits ASL+ 2199 code with symbolic expressions. An option (-dl) is provided to force the 2200 disassembler to emit legacy ASL code if desired. 2201 2202 Below is the complete list of the currently supported symbolic operators 2203 with examples. See the iASL User Guide for additional information. 2204 2205 2206 ASL+ Syntax Legacy ASL Equivalent 2207 ----------- --------------------- 2208 2209 // Math operators 2210 2211 Z = X + Y Add (X, Y, Z) 2212 Z = X - Y Subtract (X, Y, Z) 2213 Z = X * Y Multiply (X, Y, Z) 2214 Z = X / Y Divide (X, Y, , Z) 2215 Z = X % Y Mod (X, Y, Z) 2216 Z = X << Y ShiftLeft (X, Y, Z) 2217 Z = X >> Y ShiftRight (X, Y, Z) 2218 Z = X & Y And (X, Y, Z) 2219 Z = X | Y Or (X, Y, Z) 2220 Z = X ^ Y Xor (X, Y, Z) 2221 Z = ~X Not (X, Z) 2222 X++ Increment (X) 2223 X-- Decrement (X) 2224 2225 // Logical operators 2226 2227 (X == Y) LEqual (X, Y) 2228 (X != Y) LNotEqual (X, Y) 2229 (X < Y) LLess (X, Y) 2230 (X > Y) LGreater (X, Y) 2231 (X <= Y) LLessEqual (X, Y) 2232 (X >= Y) LGreaterEqual (X, Y) 2233 (X && Y) LAnd (X, Y) 2234 (X || Y) LOr (X, Y) 2235 (!X) LNot (X) 2236 2237 // Assignment and compound assignment operations 2238 2239 X = Y Store (Y, X) 2240 X += Y Add (X, Y, X) 2241 X -= Y Subtract (X, Y, X) 2242 X *= Y Multiply (X, Y, X) 2243 X /= Y Divide (X, Y, , X) 2244 X %= Y Mod (X, Y, X) 2245 X <<= Y ShiftLeft (X, Y, X) 2246 X >>= Y ShiftRight (X, Y, X) 2247 X &= Y And (X, Y, X) 2248 X |= Y Or (X, Y, X) 2249 X ^= Y Xor (X, Y, X) 2250 2251 2252 3) ASL+ Examples: 2253 ----------------- 2254 2255 Legacy ASL: 2256 If (LOr (LOr (LEqual (And (R510, 0x03FB), 0x02E0), LEqual ( 2257 And (R520, 0x03FB), 0x02E0)), LOr (LEqual (And (R530, 2258 0x03FB), 2259 0x02E0), LEqual (And (R540, 0x03FB), 0x02E0)))) 2260 { 2261 And (MEMB, 0xFFFFFFF0, SRMB) 2262 Store (MEMB, Local2) 2263 Store (PDBM, Local1) 2264 And (PDBM, 0xFFFFFFFFFFFFFFF9, PDBM) 2265 Store (SRMB, MEMB) 2266 Or (PDBM, 0x02, PDBM) 2267 } 2268 2269 ASL+ version: 2270 If (((R510 & 0x03FB) == 0x02E0) || 2271 ((R520 & 0x03FB) == 0x02E0) || 2272 ((R530 & 0x03FB) == 0x02E0) || 2273 ((R540 & 0x03FB) == 0x02E0)) 2274 { 2275 SRMB = (MEMB & 0xFFFFFFF0) 2276 Local2 = MEMB 2277 Local1 = PDBM 2278 PDBM &= 0xFFFFFFFFFFFFFFF9 2279 MEMB = SRMB 2280 PDBM |= 0x02 2281 } 2282 2283 Legacy ASL: 2284 Store (0x1234, Local1) 2285 Multiply (Add (Add (Local1, TEST), 0x20), Local2, Local3) 2286 Multiply (Local2, Add (Add (Local1, TEST), 0x20), Local3) 2287 Add (Local1, Add (TEST, Multiply (0x20, Local2)), Local3) 2288 Store (Index (PKG1, 0x03), Local6) 2289 Store (Add (Local3, Local2), Debug) 2290 Add (Local1, 0x0F, Local2) 2291 Add (Local1, Multiply (Local2, Local3), Local2) 2292 Multiply (Add (Add (Local1, TEST), 0x20), ToBCD (Local1), Local3) 2293 2294 ASL+ version: 2295 Local1 = 0x1234 2296 Local3 = (((Local1 + TEST) + 0x20) * Local2) 2297 Local3 = (Local2 * ((Local1 + TEST) + 0x20)) 2298 Local3 = (Local1 + (TEST + (0x20 * Local2))) 2299 Local6 = Index (PKG1, 0x03) 2300 Debug = (Local3 + Local2) 2301 Local2 = (Local1 + 0x0F) 2302 Local2 = (Local1 + (Local2 * Local3)) 2303 Local3 = (((Local1 + TEST) + 0x20) * ToBCD (Local1)) 2304 2305 2306 ---------------------------------------- 2307 26 September 2014. Summary of changes for version 20140926: 2308 2309 1) ACPICA kernel-resident subsystem: 2310 2311 Updated the GPIO operation region handler interface (GeneralPurposeIo). 2312 In order to support GPIO Connection objects with multiple pins, along 2313 with the related Field objects, the following changes to the interface 2314 have been made: The Address is now defined to be the offset in bits of 2315 the field unit from the previous invocation of a Connection. It can be 2316 viewed as a "Pin Number Index" into the connection resource descriptor. 2317 The BitWidth is the exact bit width of the field. It is usually one bit, 2318 but not always. See the ACPICA reference guide (section 8.8.6.2.1) for 2319 additional information and examples. 2320 2321 GPE support: During ACPICA/GPE initialization, ensure that all GPEs with 2322 corresponding _Lxx/_Exx methods are disabled (they may have been enabled 2323 by the firmware), so that they cannot fire until they are enabled via 2324 AcpiUpdateAllGpes. Rafael J. Wysocki. 2325 2326 Added a new return flag for the Event/GPE status interfaces -- 2327 AcpiGetEventStatus and AcpiGetGpeStatus. The new 2328 ACPI_EVENT_FLAGS_HAS_HANDLER flag is used to indicate that the event or 2329 GPE currently has a handler associated with it, and can thus actually 2330 affect the system. Lv Zheng. 2331 2332 Example Code and Data Size: These are the sizes for the OS-independent 2333 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2334 debug version of the code includes the debug output trace mechanism and 2335 has a much larger code and data size. 2336 2337 Current Release: 2338 Non-Debug Version: 99.1K Code, 27.3K Data, 126.4K Total 2339 Debug Version: 192.8K Code, 79.9K Data, 272.7K Total 2340 Previous Release: 2341 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total 2342 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total 2343 2344 2) iASL Compiler/Disassembler and Tools: 2345 2346 iASL: Fixed a memory allocation/free regression introduced in 20140828 2347 that could cause the compiler to crash. This was introduced inadvertently 2348 during the effort to eliminate compiler memory leaks. ACPICA BZ 1111, 2349 1113. 2350 2351 iASL: Removed two error messages that have been found to create false 2352 positives, until they can be fixed and fully validated (ACPICA BZ 1112): 2353 1) Illegal forward reference within a method 2354 2) Illegal reference across two methods 2355 2356 iASL: Implemented a new option (-lm) to create a hardware mapping file 2357 that summarizes all GPIO, I2C, SPI, and UART connections. This option 2358 works for both the compiler and disassembler. See the iASL compiler user 2359 guide for additional information and examples (section 6.4.6). 2360 2361 AcpiDump: Added support for the version 1 (ACPI 1.0) RSDP in addition to 2362 version 2. This corrects the AE_BAD_HEADER exception seen on systems with 2363 a version 1 RSDP. Lv Zheng ACPICA BZ 1097. 2364 2365 AcpiExec: For Unix versions, don't attempt to put STDIN into raw mode 2366 unless STDIN is actually a terminal. Assists with batch-mode processing. 2367 ACPICA BZ 1114. 2368 2369 Disassembler/AcpiHelp: Added another large group of recognized _HID 2370 values. 2371 2372 2373 ---------------------------------------- 2374 28 August 2014. Summary of changes for version 20140828: 2375 2376 1) ACPICA kernel-resident subsystem: 2377 2378 Fixed a problem related to the internal use of the Timer() operator where 2379 a 64-bit divide could cause an attempted link to a double-precision math 2380 library. This divide is not actually necessary, so the code was 2381 restructured to eliminate it. Lv Zheng. 2382 2383 ACPI 5.1: Added support for the runtime validation of the _DSD package 2384 (similar to the iASL support). 2385 2386 ACPI 5.1/Headers: Added support for the GICC affinity subtable to the 2387 SRAT table. Hanjun Guo <hanjun.guo (a] linaro.org>. 2388 2389 Example Code and Data Size: These are the sizes for the OS-independent 2390 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2391 debug version of the code includes the debug output trace mechanism and 2392 has a much larger code and data size. 2393 2394 Current Release: 2395 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total 2396 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total 2397 Previous Release: 2398 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total1 2399 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total 2400 2401 2) iASL Compiler/Disassembler and Tools: 2402 2403 AcpiExec: Fixed a problem on unix systems where the original terminal 2404 state was not always properly restored upon exit. Seen when using the -v 2405 option. ACPICA BZ 1104. 2406 2407 iASL: Fixed a problem with the validation of the ranges/length within the 2408 Memory24 resource descriptor. There was a boundary condition when the 2409 range was equal to the (length -1) caused by the fact that these values 2410 are defined in 256-byte blocks, not bytes. ACPICA BZ 1098 2411 2412 Disassembler: Fixed a problem with the GpioInt descriptor interrupt 2413 polarity 2414 flags. The flags are actually 2 bits, not 1, and the "ActiveBoth" keyword 2415 is 2416 now supported properly. 2417 2418 ACPI 5.1: Added the GICC affinity subtable to the SRAT table. Supported 2419 in the disassembler, data table compiler, and table template generator. 2420 2421 iASL: Added a requirement for Device() objects that one of either a _HID 2422 or _ADR must exist within the scope of a Device, as per the ACPI 2423 specification. Remove a similar requirement that was incorrectly in place 2424 for the _DSD object. 2425 2426 iASL: Added error detection for illegal named references within control 2427 methods that would cause runtime failures. Now trapped as errors are: 1) 2428 References to objects within a non-parent control method. 2) Forward 2429 references (within a method) -- for control methods, AML interpreters use 2430 a one-pass parse of control methods. ACPICA BZ 1008. 2431 2432 iASL: Added error checking for dependencies related to the _PSx power 2433 methods. ACPICA BZ 1029. 2434 1) For _PS0, one of these must exist within the same scope: _PS1, _PS2, 2435 _PS3. 2436 2) For _PS1, _PS2, and PS3: A _PS0 object must exist within the same 2437 scope. 2438 2439 iASL and table compiler: Cleanup miscellaneous memory leaks by fully 2440 deploying the existing object and string caches and adding new caches for 2441 the table compiler. 2442 2443 iASL: Split the huge parser source file into multiple subfiles to improve 2444 manageability. Generation now requires the M4 macro preprocessor, which 2445 is part of the Bison distribution on both unix and windows platforms. 2446 2447 AcpiSrc: Fixed and removed all extraneous warnings generated during 2448 entire ACPICA source code scan and/or conversion. 2449 2450 2451 ---------------------------------------- 2452 2453 24 July 2014. Summary of changes for version 20140724: 2454 2455 The ACPI 5.1 specification has been released and is available at: 2456 http://uefi.org/specs/access 2457 2458 2459 0) ACPI 5.1 support in ACPICA: 2460 2461 ACPI 5.1 is fully supported in ACPICA as of this release. 2462 2463 New predefined names. Support includes iASL and runtime ACPICA 2464 validation. 2465 _CCA (Cache Coherency Attribute). 2466 _DSD (Device-Specific Data). David Box. 2467 2468 Modifications to existing ACPI tables. Support includes headers, iASL 2469 Data Table compiler, disassembler, and the template generator. 2470 FADT - New fields and flags. Graeme Gregory. 2471 GTDT - One new subtable and new fields. Tomasz Nowicki. 2472 MADT - Two new subtables. Tomasz Nowicki. 2473 PCCT - One new subtable. 2474 2475 Miscellaneous. 2476 New notification type for System Resource Affinity change events. 2477 2478 2479 1) ACPICA kernel-resident subsystem: 2480 2481 Fixed a regression introduced in 20140627 where a fault can happen during 2482 the deletion of Alias AML namespace objects. The problem affected both 2483 the core ACPICA and the ACPICA tools including iASL and AcpiExec. 2484 2485 Implemented a new GPE public interface, AcpiMarkGpeForWake. Provides a 2486 simple mechanism to enable wake GPEs that have no associated handler or 2487 control method. Rafael Wysocki. 2488 2489 Updated the AcpiEnableGpe interface to disallow the enable if there is no 2490 handler or control method associated with the particular GPE. This will 2491 help avoid meaningless GPEs and even GPE floods. Rafael Wysocki. 2492 2493 Updated GPE handling and dispatch by disabling the GPE before clearing 2494 the status bit for edge-triggered GPEs. Lv Zheng. 2495 2496 Added Timer() support to the AML Debug object. The current timer value is 2497 now displayed with each invocation of (Store to) the debug object to 2498 enable simple generation of execution times for AML code (method 2499 execution for example.) ACPICA BZ 1093. 2500 2501 Example Code and Data Size: These are the sizes for the OS-independent 2502 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2503 debug version of the code includes the debug output trace mechanism and 2504 has a much larger code and data size. 2505 2506 Current Release: 2507 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total 2508 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total 2509 Previous Release: 2510 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total 2511 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total 2512 2513 2514 2) iASL Compiler/Disassembler and Tools: 2515 2516 Fixed an issue with the recently added local printf implementation, 2517 concerning width/precision specifiers that could cause incorrect output. 2518 Lv Zheng. ACPICA BZ 1094. 2519 2520 Disassembler: Added support to detect buffers that contain UUIDs and 2521 disassemble them to an invocation of the ToUUID operator. Also emit 2522 commented descriptions of known ACPI-related UUIDs. 2523 2524 AcpiHelp: Added support to display known ACPI-related UUIDs. New option, 2525 -u. Adds three new files. 2526 2527 iASL: Update table compiler and disassembler for DMAR table changes that 2528 were introduced in September 2013. With assistance by David Woodhouse. 2529 2530 ---------------------------------------- 2531 27 June 2014. Summary of changes for version 20140627: 2532 2533 1) ACPICA kernel-resident subsystem: 2534 2535 Formatted Output: Implemented local versions of standard formatted output 2536 utilities such as printf, etc. Over time, it has been discovered that 2537 there are in fact many portability issues with printf, and the addition 2538 of this feature will fix/prevent these issues once and for all. Some 2539 known issues are summarized below: 2540 2541 1) Output of 64-bit values is not portable. For example, UINT64 is %ull 2542 for the Linux kernel and is %uI64 for some MSVC versions. 2543 2) Invoking printf consistently in a manner that is portable across both 2544 32-bit and 64-bit platforms is difficult at best in many situations. 2545 3) The output format for pointers varies from system to system (leading 2546 zeros especially), and leads to inconsistent output from ACPICA across 2547 platforms. 2548 4) Certain platform-specific printf formats may conflict with ACPICA use. 2549 5) If there is no local C library available, ACPICA now has local support 2550 for printf. 2551 2552 -- To address these printf issues in a complete manner, ACPICA now 2553 directly implements a small subset of printf format specifiers, only 2554 those that it requires. Adds a new file, utilities/utprint.c. Lv Zheng. 2555 2556 Implemented support for ACPICA generation within the EFI environment. 2557 Initially, the AcpiDump utility is supported in the UEFI shell 2558 environment. Lv Zheng. 2559 2560 Added a new external interface, AcpiLogError, to improve ACPICA 2561 portability. This allows the host to redirect error messages from the 2562 ACPICA utilities. Lv Zheng. 2563 2564 Added and deployed new OSL file I/O interfaces to improve ACPICA 2565 portability: 2566 AcpiOsOpenFile 2567 AcpiOsCloseFile 2568 AcpiOsReadFile 2569 AcpiOsWriteFile 2570 AcpiOsGetFileOffset 2571 AcpiOsSetFileOffset 2572 There are C library implementations of these functions in the new file 2573 service_layers/oslibcfs.c -- however, the functions can be implemented by 2574 the local host in any way necessary. Lv Zheng. 2575 2576 Implemented a mechanism to disable/enable ACPI table checksum validation 2577 at runtime. This can be useful when loading tables very early during OS 2578 initialization when it may not be possible to map the entire table in 2579 order to compute the checksum. Lv Zheng. 2580 2581 Fixed a buffer allocation issue for the Generic Serial Bus support. 2582 Originally, a fixed buffer length was used. This change allows for 2583 variable-length buffers based upon the protocol indicated by the field 2584 access attributes. Reported by Lan Tianyu. Lv Zheng. 2585 2586 Fixed a problem where an object detached from a namespace node was not 2587 properly terminated/cleared and could cause a circular list problem if 2588 reattached. ACPICA BZ 1063. David Box. 2589 2590 Fixed a possible recursive lock acquisition in hwregs.c. Rakib Mullick. 2591 2592 Fixed a possible memory leak in an error return path within the function 2593 AcpiUtCopyIobjectToIobject. ACPICA BZ 1087. Colin Ian King. 2594 2595 Example Code and Data Size: These are the sizes for the OS-independent 2596 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2597 debug version of the code includes the debug output trace mechanism and 2598 has a much larger code and data size. 2599 2600 Current Release: 2601 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total 2602 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total 2603 Previous Release: 2604 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total 2605 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total 2606 2607 2608 2) iASL Compiler/Disassembler and Tools: 2609 2610 Disassembler: Add dump of ASCII equivalent text within a comment at the 2611 end of each line of the output for the Buffer() ASL operator. 2612 2613 AcpiDump: Miscellaneous changes: 2614 Fixed repetitive table dump in -n mode. 2615 For older EFI platforms, use the ACPI 1.0 GUID during RSDP search if 2616 the ACPI 2.0 GUID fails. 2617 2618 iASL: Fixed a problem where the compiler could fault if incorrectly given 2619 an acpidump output file as input. ACPICA BZ 1088. David Box. 2620 2621 AcpiExec/AcpiNames: Fixed a problem where these utilities could fault if 2622 they are invoked without any arguments. 2623 2624 Debugger: Fixed a possible memory leak in an error return path. ACPICA BZ 2625 1086. Colin Ian King. 2626 2627 Disassembler: Cleaned up a block of code that extracts a parent Op 2628 object. Added a comment that explains that the parent is guaranteed to be 2629 valid in this case. ACPICA BZ 1069. 2630 2631 2632 ---------------------------------------- 2633 24 April 2014. Summary of changes for version 20140424: 2634 2635 1) ACPICA kernel-resident subsystem: 2636 2637 Implemented support to skip/ignore NULL address entries in the RSDT/XSDT. 2638 Some of these tables are known to contain a trailing NULL entry. Lv 2639 Zheng. 2640 2641 Removed an extraneous error message for the case where there are a large 2642 number of system GPEs (> 124). This was the "32-bit FADT register is too 2643 long to convert to GAS struct" message, which is irrelevant for GPEs 2644 since the GPEx_BLK_LEN fields of the FADT are always used instead of the 2645 (limited capacity) GAS bit length. Also, several changes to ensure proper 2646 support for GPE numbers > 255, where some "GPE number" fields were 8-bits 2647 internally. 2648 2649 Implemented and deployed additional configuration support for the public 2650 ACPICA external interfaces. Entire classes of interfaces can now be 2651 easily modified or configured out, replaced by stubbed inline functions 2652 by default. Lv Zheng. 2653 2654 Moved all public ACPICA runtime configuration globals to the public 2655 ACPICA external interface file for convenience. Also, removed some 2656 obsolete/unused globals. See the file acpixf.h. Lv Zheng. 2657 2658 Documentation: Added a new section to the ACPICA reference describing the 2659 maximum number of GPEs that can be supported by the FADT-defined GPEs in 2660 block zero and one. About 1200 total. See section 4.4.1 of the ACPICA 2661 reference. 2662 2663 Example Code and Data Size: These are the sizes for the OS-independent 2664 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2665 debug version of the code includes the debug output trace mechanism and 2666 has a much larger code and data size. 2667 2668 Current Release: 2669 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total 2670 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total 2671 Previous Release: 2672 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total 2673 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total 2674 2675 2676 2) iASL Compiler/Disassembler and Tools: 2677 2678 iASL and disassembler: Add full support for the LPIT table (Low Power 2679 Idle Table). Includes support in the disassembler, data table compiler, 2680 and template generator. 2681 2682 AcpiDump utility: 2683 1) Add option to force the use of the RSDT (over the XSDT). 2684 2) Improve validation of the RSDP signature (use 8 chars instead of 4). 2685 2686 iASL: Add check for predefined packages that are too large. For 2687 predefined names that contain subpackages, check if each subpackage is 2688 too large. (Check for too small already exists.) 2689 2690 Debugger: Updated the GPE command (which simulates a GPE by executing the 2691 GPE code paths in ACPICA). The GPE device is now optional, and defaults 2692 to the GPE 0/1 FADT-defined blocks. 2693 2694 Unix application OSL: Update line-editing support. Add additional error 2695 checking and take care not to reset terminal attributes on exit if they 2696 were never set. This should help guarantee that the terminal is always 2697 left in the previous state on program exit. 2698 2699 2700 ---------------------------------------- 2701 25 March 2014. Summary of changes for version 20140325: 2702 2703 1) ACPICA kernel-resident subsystem: 2704 2705 Updated the auto-serialize feature for control methods. This feature 2706 automatically serializes all methods that create named objects in order 2707 to prevent runtime errors. The update adds support to ignore the 2708 currently executing AML SyncLevel when invoking such a method, in order 2709 to prevent disruption of any existing SyncLevel priorities that may exist 2710 in the AML code. Although the use of SyncLevels is relatively rare, this 2711 change fixes a regression where an AE_AML_MUTEX_ORDER exception can 2712 appear on some machines starting with the 20140214 release. 2713 2714 Added a new external interface to allow the host to install ACPI tables 2715 very early, before the namespace is even created. AcpiInstallTable gives 2716 the host additional flexibility for ACPI table management. Tables can be 2717 installed directly by the host as if they had originally appeared in the 2718 XSDT/RSDT. Installed tables can be SSDTs or other ACPI data tables 2719 (anything except the DSDT and FACS). Adds a new file, tbdata.c, along 2720 with additional internal restructuring and cleanup. See the ACPICA 2721 Reference for interface details. Lv Zheng. 2722 2723 Added validation of the checksum for all incoming dynamically loaded 2724 tables (via external interfaces or via AML Load/LoadTable operators). Lv 2725 Zheng. 2726 2727 Updated the use of the AcpiOsWaitEventsComplete interface during Notify 2728 and GPE handler removal. Restructured calls to eliminate possible race 2729 conditions. Lv Zheng. 2730 2731 Added a warning for the use/execution of the ASL/AML Unload (table) 2732 operator. This will help detect and identify machines that use this 2733 operator if and when it is ever used. This operator has never been seen 2734 in the field and the usage model and possible side-effects of the drastic 2735 runtime action of a full table removal are unknown. 2736 2737 Reverted the use of #pragma push/pop which was introduced in the 20140214 2738 release. It appears that push and pop are not implemented by enough 2739 compilers to make the use of this feature feasible for ACPICA at this 2740 time. However, these operators may be deployed in a future ACPICA 2741 release. 2742 2743 Added the missing EXPORT_SYMBOL macros for the install and remove SCI 2744 handler interfaces. 2745 2746 Source code generation: 2747 1) Disabled the use of the "strchr" macro for the gcc-specific 2748 generation. For some versions of gcc, this macro can periodically expose 2749 a compiler bug which in turn causes compile-time error(s). 2750 2) Added support for PPC64 compilation. Colin Ian King. 2751 2752 Example Code and Data Size: These are the sizes for the OS-independent 2753 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2754 debug version of the code includes the debug output trace mechanism and 2755 has a much larger code and data size. 2756 2757 Current Release: 2758 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total 2759 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total 2760 Previous Release: 2761 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total 2762 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total 2763 2764 2765 2) iASL Compiler/Disassembler and Tools: 2766 2767 Disassembler: Added several new features to improve the readability of 2768 the resulting ASL code. Extra information is emitted within comment 2769 fields in the ASL code: 2770 1) Known _HID/_CID values are decoded to descriptive text. 2771 2) Standard values for the Notify() operator are decoded to descriptive 2772 text. 2773 3) Target operands are expanded to full pathnames (in a comment) when 2774 possible. 2775 2776 Disassembler: Miscellaneous updates for extern() handling: 2777 1) Abort compiler if file specified by -fe option does not exist. 2778 2) Silence unnecessary warnings about argument count mismatches. 2779 3) Update warning messages concerning unresolved method externals. 2780 4) Emit "UnknownObj" keyword for externals whose type cannot be 2781 determined. 2782 2783 AcpiHelp utility: 2784 1) Added the -a option to display both the ASL syntax and the AML 2785 encoding for an input ASL operator. This effectively displays all known 2786 information about an ASL operator with one AcpiHelp invocation. 2787 2) Added substring match support (similar to a wildcard) for the -i 2788 (_HID/PNP IDs) option. 2789 2790 iASL/Disassembler: Since this tool does not yet support execution on big- 2791 endian machines, added detection of endianness and an error message if 2792 execution is attempted on big-endian. Support for big-endian within iASL 2793 is a feature that is on the ACPICA to-be-done list. 2794 2795 AcpiBin utility: 2796 1) Remove option to extract binary files from an acpidump; this function 2797 is made obsolete by the AcpiXtract utility. 2798 2) General cleanup of open files and allocated buffers. 2799 2800 2801 ---------------------------------------- 2802 14 February 2014. Summary of changes for version 20140214: 2803 2804 1) ACPICA kernel-resident subsystem: 2805 2806 Implemented a new mechanism to proactively prevent problems with ill- 2807 behaved reentrant control methods that create named ACPI objects. This 2808 behavior is illegal as per the ACPI specification, but is nonetheless 2809 frequently seen in the field. Previously, this could lead to an 2810 AE_ALREADY_EXISTS exception if the method was actually entered by more 2811 than one thread. This new mechanism detects such methods at table load 2812 time and marks them "serialized" to prevent reentrancy. A new global 2813 option, AcpiGbl_AutoSerializeMethods, has been added to disable this 2814 feature if desired. This mechanism and global option obsoletes and 2815 supersedes the previous AcpiGbl_SerializeAllMethods option. 2816 2817 Added the "Windows 2013" string to the _OSI support. ACPICA will now 2818 respond TRUE to _OSI queries with this string. It is the stated policy of 2819 ACPICA to add new strings to the _OSI support as soon as possible after 2820 they are defined. See the full ACPICA _OSI policy which has been added to 2821 the utilities/utosi.c file. 2822 2823 Hardened/updated the _PRT return value auto-repair code: 2824 1) Do not abort the repair on a single subpackage failure, continue to 2825 check all subpackages. 2826 2) Add check for the minimum subpackage length (4). 2827 3) Properly handle extraneous NULL package elements. 2828 2829 Added support to avoid the possibility of infinite loops when traversing 2830 object linked lists. Never allow an infinite loop, even in the face of 2831 corrupted object lists. 2832 2833 ACPICA headers: Deployed the use of #pragma pack(push) and #pragma 2834 pack(pop) directives to ensure that the ACPICA headers are independent of 2835 compiler settings or other host headers. 2836 2837 Example Code and Data Size: These are the sizes for the OS-independent 2838 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2839 debug version of the code includes the debug output trace mechanism and 2840 has a much larger code and data size. 2841 2842 Current Release: 2843 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total 2844 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total 2845 Previous Release: 2846 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total 2847 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total 2848 2849 2850 2) iASL Compiler/Disassembler and Tools: 2851 2852 iASL/Table-compiler: Fixed a problem with support for the SPMI table. The 2853 first reserved field was incorrectly forced to have a value of zero. This 2854 change correctly forces the field to have a value of one. ACPICA BZ 1081. 2855 2856 Debugger: Added missing support for the "Extra" and "Data" subobjects 2857 when displaying object data. 2858 2859 Debugger: Added support to display entire object linked lists when 2860 displaying object data. 2861 2862 iASL: Removed the obsolete -g option to obtain ACPI tables from the 2863 Windows registry. This feature has been superseded by the acpidump 2864 utility. 2865 2866 2867 ---------------------------------------- 2868 14 January 2014. Summary of changes for version 20140114: 2869 2870 1) ACPICA kernel-resident subsystem: 2871 2872 Updated all ACPICA copyrights and signons to 2014. Added the 2014 2873 copyright to all module headers and signons, including the standard Linux 2874 header. This affects virtually every file in the ACPICA core subsystem, 2875 iASL compiler, all ACPICA utilities, and the test suites. 2876 2877 Improved parameter validation for AcpiInstallGpeBlock. Added the 2878 following checks: 2879 1) The incoming device handle refers to type ACPI_TYPE_DEVICE. 2880 2) There is not already a GPE block attached to the device. 2881 Likewise, with AcpiRemoveGpeBlock, ensure that the incoming object is a 2882 device. 2883 2884 Correctly support "references" in the ACPI_OBJECT. This change fixes the 2885 support to allow references (namespace nodes) to be passed as arguments 2886 to control methods via the evaluate object interface. This is probably 2887 most useful for testing purposes, however. 2888 2889 Improved support for 32/64 bit physical addresses in printf()-like 2890 output. This change improves the support for physical addresses in printf 2891 debug statements and other output on both 32-bit and 64-bit hosts. It 2892 consistently outputs the appropriate number of bytes for each host. The 2893 %p specifier is unsatisfactory since it does not emit uniform output on 2894 all hosts/clib implementations (on some, leading zeros are not supported, 2895 leading to difficult-to-read output). 2896 2897 Example Code and Data Size: These are the sizes for the OS-independent 2898 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2899 debug version of the code includes the debug output trace mechanism and 2900 has a much larger code and data size. 2901 2902 Current Release: 2903 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total 2904 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total 2905 Previous Release: 2906 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total 2907 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total 2908 2909 2910 2) iASL Compiler/Disassembler and Tools: 2911 2912 iASL: Fix a possible fault when using the Connection() operator. Fixes a 2913 problem if the parent Field definition for the Connection operator refers 2914 to an operation region that does not exist. ACPICA BZ 1064. 2915 2916 AcpiExec: Load of local test tables is now optional. The utility has the 2917 capability to load some various tables to test features of ACPICA. 2918 However, there are enough of them that the output of the utility became 2919 confusing. With this change, only the required local tables are displayed 2920 (RSDP, XSDT, etc.) along with the actual tables loaded via the command 2921 line specification. This makes the default output simler and easier to 2922 understand. The -el command line option restores the original behavior 2923 for testing purposes. 2924 2925 AcpiExec: Added support for overlapping operation regions. This change 2926 expands the simulation of operation regions by supporting regions that 2927 overlap within the given address space. Supports SystemMemory and 2928 SystemIO. ASLTS test suite updated also. David Box. ACPICA BZ 1031. 2929 2930 AcpiExec: Added region handler support for PCI_Config and EC spaces. This 2931 allows AcpiExec to simulate these address spaces, similar to the current 2932 support for SystemMemory and SystemIO. 2933 2934 Debugger: Added new command to read/write/compare all namespace objects. 2935 The command "test objects" will exercise the entire namespace by writing 2936 new values to each data object, and ensuring that the write was 2937 successful. The original value is then restored and verified. 2938 2939 Debugger: Added the "test predefined" command. This change makes this 2940 test public and puts it under the new "test" command. The test executes 2941 each and every predefined name within the current namespace. 2942 2943 2944 ---------------------------------------- 2945 18 December 2013. Summary of changes for version 20131218: 2946 2947 Global note: The ACPI 5.0A specification was released this month. There 2948 are no changes needed for ACPICA since this release of ACPI is an 2949 errata/clarification release. The specification is available at 2950 acpi.info. 2951 2952 2953 1) ACPICA kernel-resident subsystem: 2954 2955 Added validation of the XSDT root table if it is present. Some older 2956 platforms contain an XSDT that is ill-formed or otherwise invalid (such 2957 as containing some or all entries that are NULL pointers). This change 2958 adds a new function to validate the XSDT before actually using it. If the 2959 XSDT is found to be invalid, ACPICA will now automatically fall back to 2960 using the RSDT instead. Original implementation by Zhao Yakui. Ported to 2961 ACPICA and enhanced by Lv Zheng and Bob Moore. 2962 2963 Added a runtime option to ignore the XSDT and force the use of the RSDT. 2964 This change adds a runtime option that will force ACPICA to use the RSDT 2965 instead of the XSDT (AcpiGbl_DoNotUseXsdt). Although the ACPI spec 2966 requires that an XSDT be used instead of the RSDT, the XSDT has been 2967 found to be corrupt or ill-formed on some machines. Lv Zheng. 2968 2969 Added a runtime option to favor 32-bit FADT register addresses over the 2970 64-bit addresses. This change adds an option to favor 32-bit FADT 2971 addresses when there is a conflict between the 32-bit and 64-bit versions 2972 of the same register. The default behavior is to use the 64-bit version 2973 in accordance with the ACPI specification. This can now be overridden via 2974 the AcpiGbl_Use32BitFadtAddresses flag. ACPICA BZ 885. Lv Zheng. 2975 2976 During the change above, the internal "Convert FADT" and "Verify FADT" 2977 functions have been merged to simplify the code, making it easier to 2978 understand and maintain. ACPICA BZ 933. 2979 2980 Improve exception reporting and handling for GPE block installation. 2981 Return an actual status from AcpiEvGetGpeXruptBlock and don't clobber the 2982 status when exiting AcpiEvInstallGpeBlock. ACPICA BZ 1019. 2983 2984 Added helper macros to extract bus/segment numbers from the HEST table. 2985 This change adds two macros to extract the encoded bus and segment 2986 numbers from the HEST Bus field - ACPI_HEST_BUS and ACPI_HEST_SEGMENT. 2987 Betty Dall <betty.dall (a] hp.com> 2988 2989 Removed the unused ACPI_FREE_BUFFER macro. This macro is no longer used 2990 by ACPICA. It is not a public macro, so it should have no effect on 2991 existing OSV code. Lv Zheng. 2992 2993 Example Code and Data Size: These are the sizes for the OS-independent 2994 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2995 debug version of the code includes the debug output trace mechanism and 2996 has a much larger code and data size. 2997 2998 Current Release: 2999 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total 3000 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total 3001 Previous Release: 3002 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total 3003 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total 3004 3005 3006 2) iASL Compiler/Disassembler and Tools: 3007 3008 Disassembler: Improved pathname support for emitted External() 3009 statements. This change adds full pathname support for external names 3010 that have been resolved internally by the inclusion of additional ACPI 3011 tables (via the iASL -e option). Without this change, the disassembler 3012 can emit multiple externals for the same object, or it become confused 3013 when the Scope() operator is used on an external object. Overall, greatly 3014 improves the ability to actually recompile the emitted ASL code when 3015 objects a referenced across multiple ACPI tables. Reported by Michael 3016 Tsirkin (mst (a] redhat.com). 3017 3018 Tests/ASLTS: Updated functional control suite to execute with no errors. 3019 David Box. Fixed several errors related to the testing of the interpreter 3020 slack mode. Lv Zheng. 3021 3022 iASL: Added support to detect names that are declared within a control 3023 method, but are unused (these are temporary names that are only valid 3024 during the time the method is executing). A remark is issued for these 3025 cases. ACPICA BZ 1022. 3026 3027 iASL: Added full support for the DBG2 table. Adds full disassembler, 3028 table compiler, and template generator support for the DBG2 table (Debug 3029 Port 2 table). 3030 3031 iASL: Added full support for the PCCT table, update the table definition. 3032 Updates the PCCT table definition in the actbl3.h header and adds table 3033 compiler and template generator support. 3034 3035 iASL: Added an option to emit only error messages (no warnings/remarks). 3036 The -ve option will enable only error messages, warnings and remarks are 3037 suppressed. This can simplify debugging when only the errors are 3038 important, such as when an ACPI table is disassembled and there are many 3039 warnings and remarks -- but only the actual errors are of real interest. 3040 3041 Example ACPICA code (source/tools/examples): Updated the example code so 3042 that it builds to an actual working program, not just example code. Added 3043 ACPI tables and execution of an example control method in the DSDT. Added 3044 makefile support for Unix generation. 3045 3046 3047 ---------------------------------------- 3048 15 November 2013. Summary of changes for version 20131115: 3049 3050 This release is available at https://acpica.org/downloads 3051 3052 3053 1) ACPICA kernel-resident subsystem: 3054 3055 Resource Manager: Fixed loop termination for the "get AML length" 3056 function. The loop previously had an error termination on a NULL resource 3057 pointer, which can never happen since the loop simply increments a valid 3058 resource pointer. This fix changes the loop to terminate with an error on 3059 an invalid end-of-buffer condition. The problem can be seen as an 3060 infinite loop by callers to AcpiSetCurrentResources with an invalid or 3061 corrupted resource descriptor, or a resource descriptor that is missing 3062 an END_TAG descriptor. Reported by Dan Carpenter 3063 <dan.carpenter (a] oracle.com>. Lv Zheng, Bob Moore. 3064 3065 Table unload and ACPICA termination: Delete all attached data objects 3066 during namespace node deletion. This fix updates namespace node deletion 3067 to delete the entire list of attached objects (attached via 3068 AcpiAttachObject) instead of just one of the attached items. ACPICA BZ 3069 1024. Tomasz Nowicki (tomasz.nowicki (a] linaro.org). 3070 3071 ACPICA termination: Added support to delete all objects attached to the 3072 root namespace node. This fix deletes any and all objects that have been 3073 attached to the root node via AcpiAttachData. Previously, none of these 3074 objects were deleted. Reported by Tomasz Nowicki. ACPICA BZ 1026. 3075 3076 Debug output: Do not emit the function nesting level for the in-kernel 3077 build. The nesting level is really only useful during a single-thread 3078 execution. Therefore, only enable this output for the AcpiExec utility. 3079 Also, only emit the thread ID when executing under AcpiExec (Context 3080 switches are still always detected and a message is emitted). ACPICA BZ 3081 972. 3082 3083 Example Code and Data Size: These are the sizes for the OS-independent 3084 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3085 debug version of the code includes the debug output trace mechanism and 3086 has a much larger code and data size. 3087 3088 Current Release: 3089 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total 3090 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total 3091 Previous Release: 3092 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total 3093 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total 3094 3095 3096 2) iASL Compiler/Disassembler and Tools: 3097 3098 AcpiExec/Unix-OSL: Use <termios.h> instead of <termio.h>. This is the 3099 correct portable POSIX header for terminal control functions. 3100 3101 Disassembler: Fixed control method invocation issues related to the use 3102 of the CondRefOf() operator. The problem is seen in the disassembly where 3103 control method invocations may not be disassembled properly if the 3104 control method name has been used previously as an argument to CondRefOf. 3105 The solution is to not attempt to emit an external declaration for the 3106 CondRefOf target (it is not necessary in the first place). This prevents 3107 disassembler object type confusion. ACPICA BZ 988. 3108 3109 Unix Makefiles: Added an option to disable compiler optimizations and the 3110 _FORTIFY_SOURCE flag. Some older compilers have problems compiling ACPICA 3111 with optimizations (reportedly, gcc 4.4 for example). This change adds a 3112 command line option for make (NOOPT) that disables all compiler 3113 optimizations and the _FORTIFY_SOURCE compiler flag. The default 3114 optimization is -O2 with the _FORTIFY_SOURCE flag specified. ACPICA BZ 3115 1034. Lv Zheng, Bob Moore. 3116 3117 Tests/ASLTS: Added options to specify individual test cases and modes. 3118 This allows testers running aslts.sh to optionally specify individual 3119 test modes and test cases. Also added an option to disable the forced 3120 generation of the ACPICA tools from source if desired. Lv Zheng. 3121 3122 ---------------------------------------- 3123 27 September 2013. Summary of changes for version 20130927: 3124 3125 This release is available at https://acpica.org/downloads 3126 3127 3128 1) ACPICA kernel-resident subsystem: 3129 3130 Fixed a problem with store operations to reference objects. This change 3131 fixes a problem where a Store operation to an ArgX object that contained 3132 a 3133 reference to a field object did not complete the automatic dereference 3134 and 3135 then write to the actual field object. Instead, the object type of the 3136 field object was inadvertently changed to match the type of the source 3137 operand. The new behavior will actually write to the field object (buffer 3138 field or field unit), thus matching the correct ACPI-defined behavior. 3139 3140 Implemented support to allow the host to redefine individual OSL 3141 prototypes. This change enables the host to redefine OSL prototypes found 3142 in the acpiosxf.h file. This allows the host to implement OSL interfaces 3143 with a macro or inlined function. Further, it allows the host to add any 3144 additional required modifiers such as __iomem, __init, __exit, etc., as 3145 necessary on a per-interface basis. Enables maximum flexibility for the 3146 OSL interfaces. Lv Zheng. 3147 3148 Hardcoded the access width for the FADT-defined reset register. The ACPI 3149 specification requires the reset register width to be 8 bits. ACPICA now 3150 hardcodes the width to 8 and ignores the FADT width value. This provides 3151 compatibility with other ACPI implementations that have allowed BIOS code 3152 with bad register width values to go unnoticed. Matthew Garett, Bob 3153 Moore, 3154 Lv Zheng. 3155 3156 Changed the position/use of the ACPI_PRINTF_LIKE macro. This macro is 3157 used 3158 in the OSL header (acpiosxf). The change modifies the position of this 3159 macro in each instance where it is used (AcpiDebugPrint, etc.) to avoid 3160 build issues if the OSL defines the implementation of the interface to be 3161 an inline stub function. Lv Zheng. 3162 3163 Deployed a new macro ACPI_EXPORT_SYMBOL_INIT for the main ACPICA 3164 initialization interfaces. This change adds a new macro for the main init 3165 and terminate external interfaces in order to support hosts that require 3166 additional or different processing for these functions. Changed from 3167 ACPI_EXPORT_SYMBOL to ACPI_EXPORT_SYMBOL_INIT for these functions. Lv 3168 Zheng, Bob Moore. 3169 3170 Cleaned up the memory allocation macros for configurability. In the 3171 common 3172 case, the ACPI_ALLOCATE and related macros now resolve directly to their 3173 respective AcpiOs* OSL interfaces. Two options: 3174 1) The ACPI_ALLOCATE_ZEROED macro uses a simple local implementation by 3175 default, unless overridden by the USE_NATIVE_ALLOCATE_ZEROED define. 3176 2) For AcpiExec (and for debugging), the macros can optionally be 3177 resolved 3178 to the local ACPICA interfaces that track each allocation (local tracking 3179 is used to immediately detect memory leaks). 3180 Lv Zheng. 3181 3182 Simplified the configuration for ACPI_REDUCED_HARDWARE. Allows the kernel 3183 to predefine this macro to either TRUE or FALSE during the system build. 3184 3185 Replaced __FUNCTION_ with __func__ in the gcc-specific header. 3186 3187 Example Code and Data Size: These are the sizes for the OS-independent 3188 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3189 debug version of the code includes the debug output trace mechanism and 3190 has a much larger code and data size. 3191 3192 Current Release: 3193 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total 3194 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total 3195 Previous Release: 3196 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total 3197 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total 3198 3199 3200 2) iASL Compiler/Disassembler and Tools: 3201 3202 iASL: Implemented wildcard support for the -e option. This simplifies use 3203 when there are many SSDTs that must be included to resolve external 3204 method 3205 declarations. ACPICA BZ 1041. Example: 3206 iasl -e ssdt*.dat -d dsdt.dat 3207 3208 AcpiExec: Add history/line-editing for Unix/Linux systems. This change 3209 adds a portable module that implements full history and limited line 3210 editing for Unix and Linux systems. It does not use readline() due to 3211 portability issues. Instead it uses the POSIX termio interface to put the 3212 terminal in raw input mode so that the various special keys can be 3213 trapped 3214 (such as up/down-arrow for history support and left/right-arrow for line 3215 editing). Uses the existing debugger history mechanism. ACPICA BZ 1036. 3216 3217 AcpiXtract: Add support to handle (ignore) "empty" lines containing only 3218 one or more spaces. This provides compatible with early or different 3219 versions of the AcpiDump utility. ACPICA BZ 1044. 3220 3221 AcpiDump: Do not ignore tables that contain only an ACPI table header. 3222 Apparently, some BIOSs create SSDTs that contain an ACPI table header but 3223 no other data. This change adds support to dump these tables. Any tables 3224 shorter than the length of an ACPI table header remain in error (an error 3225 message is emitted). Reported by Yi Li. 3226 3227 Debugger: Echo actual command along with the "unknown command" message. 3228 3229 ---------------------------------------- 3230 23 August 2013. Summary of changes for version 20130823: 3231 3232 1) ACPICA kernel-resident subsystem: 3233 3234 Implemented support for host-installed System Control Interrupt (SCI) 3235 handlers. Certain ACPI functionality requires the host to handle raw 3236 SCIs. For example, the "SCI Doorbell" that is defined for memory power 3237 state support requires the host device driver to handle SCIs to examine 3238 if the doorbell has been activated. Multiple SCI handlers can be 3239 installed to allow for future expansion. New external interfaces are 3240 AcpiInstallSciHandler, AcpiRemoveSciHandler; see the ACPICA reference for 3241 details. Lv Zheng, Bob Moore. ACPICA BZ 1032. 3242 3243 Operation region support: Never locally free the handler "context" 3244 pointer. This change removes some dangerous code that attempts to free 3245 the handler context pointer in some (rare) circumstances. The owner of 3246 the handler owns this pointer and the ACPICA code should never touch it. 3247 Although not seen to be an issue in any kernel, it did show up as a 3248 problem (fault) under AcpiExec. Also, set the internal storage field for 3249 the context pointer to zero when the region is deactivated, simply for 3250 sanity. David Box. ACPICA BZ 1039. 3251 3252 AcpiRead: On error, do not modify the return value target location. If an 3253 error happens in the middle of a split 32/32 64-bit I/O operation, do not 3254 modify the target of the return value pointer. Makes the code consistent 3255 with the rest of ACPICA. Bjorn Helgaas. 3256 3257 Example Code and Data Size: These are the sizes for the OS-independent 3258 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3259 debug version of the code includes the debug output trace mechanism and 3260 has a much larger code and data size. 3261 3262 Current Release: 3263 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total 3264 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total 3265 Previous Release: 3266 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total 3267 Debug Version: 185.4K Code, 77.1K Data, 262.5K Total 3268 3269 3270 2) iASL Compiler/Disassembler and Tools: 3271 3272 AcpiDump: Implemented several new features and fixed some problems: 3273 1) Added support to dump the RSDP, RSDT, and XSDT tables. 3274 2) Added support for multiple table instances (SSDT, UEFI). 3275 3) Added option to dump "customized" (overridden) tables (-c). 3276 4) Fixed a problem where some table filenames were improperly 3277 constructed. 3278 5) Improved some error messages, removed some unnecessary messages. 3279 3280 iASL: Implemented additional support for disassembly of ACPI tables that 3281 contain invocations of external control methods. The -fe<file> option 3282 allows the import of a file that specifies the external methods along 3283 with the required number of arguments for each -- allowing for the 3284 correct disassembly of the table. This is a workaround for a limitation 3285 of AML code where the disassembler often cannot determine the number of 3286 arguments required for an external control method and generates incorrect 3287 ASL code. See the iASL reference for details. ACPICA BZ 1030. 3288 3289 Debugger: Implemented a new command (paths) that displays the full 3290 pathnames (namepaths) and object types of all objects in the namespace. 3291 This is an alternative to the namespace command. 3292 3293 Debugger: Implemented a new command (sci) that invokes the SCI dispatch 3294 mechanism and any installed handlers. 3295 3296 iASL: Fixed a possible segfault for "too many parent prefixes" condition. 3297 This can occur if there are too many parent prefixes in a namepath (for 3298 example, ^^^^^^PCI0.ECRD). ACPICA BZ 1035. 3299 3300 Application OSLs: Set the return value for the PCI read functions. These 3301 functions simply return AE_OK, but should set the return value to zero 3302 also. This change implements this. ACPICA BZ 1038. 3303 3304 Debugger: Prevent possible command line buffer overflow. Increase the 3305 size of a couple of the debugger line buffers, and ensure that overflow 3306 cannot happen. ACPICA BZ 1037. 3307 3308 iASL: Changed to abort immediately on serious errors during the parsing 3309 phase. Due to the nature of ASL, there is no point in attempting to 3310 compile these types of errors, and they typically end up causing a 3311 cascade of hundreds of errors which obscure the original problem. 3312 3313 ---------------------------------------- 3314 25 July 2013. Summary of changes for version 20130725: 3315 3316 1) ACPICA kernel-resident subsystem: 3317 3318 Fixed a problem with the DerefOf operator where references to FieldUnits 3319 and BufferFields incorrectly returned the parent object, not the actual 3320 value of the object. After this change, a dereference of a FieldUnit 3321 reference results in a read operation on the field to get the value, and 3322 likewise, the appropriate BufferField value is extracted from the target 3323 buffer. 3324 3325 Fixed a problem where the _WAK method could cause a fault under these 3326 circumstances: 1) Interpreter slack mode was not enabled, and 2) the _WAK 3327 method returned no value. The problem is rarely seen because most kernels 3328 run ACPICA in slack mode. 3329 3330 For the DerefOf operator, a fatal error now results if an attempt is made 3331 to dereference a reference (created by the Index operator) to a NULL 3332 package element. Provides compatibility with other ACPI implementations, 3333 and this behavior will be added to a future version of the ACPI 3334 specification. 3335 3336 The ACPI Power Management Timer (defined in the FADT) is now optional. 3337 This provides compatibility with other ACPI implementations and will 3338 appear in the next version of the ACPI specification. If there is no PM 3339 Timer on the platform, AcpiGetTimer returns AE_SUPPORT. An address of 3340 zero in the FADT indicates no PM timer. 3341 3342 Implemented a new interface for _OSI support, AcpiUpdateInterfaces. This 3343 allows the host to globally enable/disable all vendor strings, all 3344 feature strings, or both. Intended to be primarily used for debugging 3345 purposes only. Lv Zheng. 3346 3347 Expose the collected _OSI data to the host via a global variable. This 3348 data tracks the highest level vendor ID that has been invoked by the BIOS 3349 so that the host (and potentially ACPICA itself) can change behaviors 3350 based upon the age of the BIOS. 3351 3352 Example Code and Data Size: These are the sizes for the OS-independent 3353 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3354 debug version of the code includes the debug output trace mechanism and 3355 has a much larger code and data size. 3356 3357 Current Release: 3358 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total 3359 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total 3360 Previous Release: 3361 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total 3362 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total 3363 3364 3365 2) iASL Compiler/Disassembler and Tools: 3366 3367 iASL: Created the following enhancements for the -so option (create 3368 offset table): 3369 1)Add offsets for the last nameseg in each namepath for every supported 3370 object type 3371 2)Add support for Processor, Device, Thermal Zone, and Scope objects 3372 3)Add the actual AML opcode for the parent object of every supported 3373 object type 3374 4)Add support for the ZERO/ONE/ONES AML opcodes for integer objects 3375 3376 Disassembler: Emit all unresolved external symbols in a single block. 3377 These are external references to control methods that could not be 3378 resolved, and thus, the disassembler had to make a guess at the number of 3379 arguments to parse. 3380 3381 iASL: The argument to the -T option (create table template) is now 3382 optional. If not specified, the default table is a DSDT, typically the 3383 most common case. 3384 3385 ---------------------------------------- 3386 26 June 2013. Summary of changes for version 20130626: 3387 3388 1) ACPICA kernel-resident subsystem: 3389 3390 Fixed an issue with runtime repair of the _CST object. Null or invalid 3391 elements were not always removed properly. Lv Zheng. 3392 3393 Removed an arbitrary restriction of 256 GPEs per GPE block (such as the 3394 FADT-defined GPE0 and GPE1). For GPE0, GPE1, and each GPE Block Device, 3395 the maximum number of GPEs is 1016. Use of multiple GPE block devices 3396 makes the system-wide number of GPEs essentially unlimited. 3397 3398 Example Code and Data Size: These are the sizes for the OS-independent 3399 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3400 debug version of the code includes the debug output trace mechanism and 3401 has a much larger code and data size. 3402 3403 Current Release: 3404 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total 3405 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total 3406 Previous Release: 3407 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total 3408 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total 3409 3410 3411 2) iASL Compiler/Disassembler and Tools: 3412 3413 Portable AcpiDump: Implemented full support for the Linux and FreeBSD 3414 hosts. Now supports Linux, FreeBSD, and Windows. 3415 3416 Disassembler: Added some missing types for the HEST and EINJ tables: "Set 3417 Error Type With Address", "CMCI", "MCE", and "Flush Cacheline". 3418 3419 iASL/Preprocessor: Implemented full support for nested 3420 #if/#else/#elif/#endif blocks. Allows arbitrary depth of nested blocks. 3421 3422 Disassembler: Expanded maximum output string length to 64K. Was 256 bytes 3423 max. The original purpose of this constraint was to limit the amount of 3424 debug output. However, the string function in question (UtPrintString) is 3425 now used for the disassembler also, where 256 bytes is insufficient. 3426 Reported by RehabMan@GitHub. 3427 3428 iASL/DataTables: Fixed some problems and issues with compilation of DMAR 3429 tables. ACPICA BZ 999. Lv Zheng. 3430 3431 iASL: Fixed a couple of error exit issues that could result in a "Could 3432 not delete <file>" message during ASL compilation. 3433 3434 AcpiDump: Allow "FADT" and "MADT" as valid table signatures, even though 3435 the actual signatures for these tables are "FACP" and "APIC", 3436 respectively. 3437 3438 AcpiDump: Added support for multiple UEFI tables. Only SSDT and UEFI 3439 tables are allowed to have multiple instances. 3440 3441 ---------------------------------------- 3442 17 May 2013. Summary of changes for version 20130517: 3443 3444 1) ACPICA kernel-resident subsystem: 3445 3446 Fixed a regression introduced in version 20130328 for _INI methods. This 3447 change fixes a problem introduced in 20130328 where _INI methods are no 3448 longer executed properly because of a memory block that was not 3449 initialized correctly. ACPICA BZ 1016. Tomasz Nowicki 3450 <tomasz.nowicki (a] linaro.org>. 3451 3452 Fixed a possible problem with the new extended sleep registers in the 3453 ACPI 3454 5.0 FADT. Do not use these registers (even if populated) unless the HW- 3455 reduced bit is set in the FADT (as per the ACPI specification). ACPICA BZ 3456 1020. Lv Zheng. 3457 3458 Implemented return value repair code for _CST predefined objects: Sort 3459 the 3460 list and detect/remove invalid entries. ACPICA BZ 890. Lv Zheng. 3461 3462 Implemented a debug-only option to disable loading of SSDTs from the 3463 RSDT/XSDT during ACPICA initialization. This can be useful for debugging 3464 ACPI problems on some machines. Set AcpiGbl_DisableSsdtTableLoad in 3465 acglobal.h - ACPICA BZ 1005. Lv Zheng. 3466 3467 Fixed some issues in the ACPICA initialization and termination code: 3468 Tomasz Nowicki <tomasz.nowicki (a] linaro.org> 3469 1) Clear events initialized flag upon event component termination. ACPICA 3470 BZ 1013. 3471 2) Fixed a possible memory leak in GPE init error path. ACPICA BZ 1018. 3472 3) Delete global lock pending lock during termination. ACPICA BZ 1012. 3473 4) Clear debug buffer global on termination to prevent possible multiple 3474 delete. ACPICA BZ 1010. 3475 3476 Standardized all switch() blocks across the entire source base. After 3477 many 3478 years, different formatting for switch() had crept in. This change makes 3479 the formatting of every switch block identical. ACPICA BZ 997. Chao Guan. 3480 3481 Split some files to enhance ACPICA modularity and configurability: 3482 1) Split buffer dump routines into utilities/utbuffer.c 3483 2) Split internal error message routines into utilities/uterror.c 3484 3) Split table print utilities into tables/tbprint.c 3485 4) Split iASL command-line option processing into asloptions.c 3486 3487 Makefile enhancements: 3488 1) Support for all new files above. 3489 2) Abort make on errors from any subcomponent. Chao Guan. 3490 3) Add build support for Apple Mac OS X. Liang Qi. 3491 3492 Example Code and Data Size: These are the sizes for the OS-independent 3493 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3494 debug version of the code includes the debug output trace mechanism and 3495 has a much larger code and data size. 3496 3497 Current Release: 3498 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total 3499 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total 3500 Previous Release: 3501 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total 3502 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total 3503 3504 3505 2) iASL Compiler/Disassembler and Tools: 3506 3507 New utility: Implemented an easily portable version of the acpidump 3508 utility to extract ACPI tables from the system (or a file) in an ASCII 3509 hex 3510 dump format. The top-level code implements the various command line 3511 options, file I/O, and table dump routines. To port to a new host, only 3512 three functions need to be implemented to get tables -- since this 3513 functionality is OS-dependent. See the tools/acpidump/apmain.c module and 3514 the ACPICA reference for porting instructions. ACPICA BZ 859. Notes: 3515 1) The Windows version obtains the ACPI tables from the Registry. 3516 2) The Linux version is under development. 3517 3) Other hosts - If an OS-dependent module is submitted, it will be 3518 distributed with ACPICA. 3519 3520 iASL: Fixed a regression for -D preprocessor option (define symbol). A 3521 restructuring/change to the initialization sequence caused this option to 3522 no longer work properly. 3523 3524 iASL: Implemented a mechanism to disable specific warnings and remarks. 3525 Adds a new command line option, "-vw <messageid> as well as "#pragma 3526 disable <messageid>". ACPICA BZ 989. Chao Guan, Bob Moore. 3527 3528 iASL: Fix for too-strict package object validation. The package object 3529 validation for return values from the predefined names is a bit too 3530 strict, it does not allow names references within the package (which will 3531 be resolved at runtime.) These types of references cannot be validated at 3532 compile time. This change ignores named references within package objects 3533 for names that return or define static packages. 3534 3535 Debugger: Fixed the 80-character command line limitation for the History 3536 command. Now allows lines of arbitrary length. ACPICA BZ 1000. Chao Guan. 3537 3538 iASL: Added control method and package support for the -so option 3539 (generates AML offset table for BIOS support.) 3540 3541 iASL: issue a remark if a non-serialized method creates named objects. If 3542 a thread blocks within the method for any reason, and another thread 3543 enters the method, the method will fail because an attempt will be made 3544 to 3545 create the same (named) object twice. In this case, issue a remark that 3546 the method should be marked serialized. NOTE: may become a warning later. 3547 ACPICA BZ 909. 3548 3549 ---------------------------------------- 3550 18 April 2013. Summary of changes for version 20130418: 3551 3552 1) ACPICA kernel-resident subsystem: 3553 3554 Fixed a possible buffer overrun during some rare but specific field unit 3555 read operations. This overrun can only happen if the DSDT version is 1 -- 3556 meaning that all AML integers are 32 bits -- and the field length is 3557 between 33 and 55 bits long. During the read, an internal buffer object 3558 is 3559 created for the field unit because the field is larger than an integer 3560 (32 3561 bits). However, in this case, the buffer will be incorrectly written 3562 beyond the end because the buffer length is less than the internal 3563 minimum 3564 of 64 bits (8 bytes) long. The buffer will be either 5, 6, or 7 bytes 3565 long, but a full 8 bytes will be written. 3566 3567 Updated the Embedded Controller "orphan" _REG method support. This refers 3568 to _REG methods under the EC device that have no corresponding operation 3569 region. This is allowed by the ACPI specification. This update removes a 3570 dependency on the existence an ECDT table. It will execute an orphan _REG 3571 method as long as the operation region handler for the EC is installed at 3572 the EC device node and not the namespace root. Rui Zhang (original 3573 update), Bob Moore (update/integrate). 3574 3575 Implemented run-time argument typechecking for all predefined ACPI names 3576 (_STA, _BIF, etc.) This change performs object typechecking on all 3577 incoming arguments for all predefined names executed via 3578 AcpiEvaluateObject. This ensures that ACPI-related device drivers are 3579 passing correct object types as well as the correct number of arguments 3580 (therefore identifying any issues immediately). Also, the ASL/namespace 3581 definition of the predefined name is checked against the ACPI 3582 specification for the proper argument count. Adds one new file, 3583 nsarguments.c 3584 3585 Changed an exception code for the ASL UnLoad() operator. Changed the 3586 exception code for the case where the input DdbHandle is invalid, from 3587 AE_BAD_PARAMETER to the more appropriate AE_AML_OPERAND_TYPE. 3588 3589 Unix/Linux makefiles: Removed the use of the -O2 optimization flag in the 3590 global makefile. The use of this flag causes compiler errors on earlier 3591 versions of GCC, so it has been removed for compatibility. 3592 3593 Miscellaneous cleanup: 3594 1) Removed some unused/obsolete macros 3595 2) Fixed a possible memory leak in the _OSI support 3596 3) Removed an unused variable in the predefined name support 3597 4) Windows OSL: remove obsolete reference to a memory list field 3598 3599 Example Code and Data Size: These are the sizes for the OS-independent 3600 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3601 debug version of the code includes the debug output trace mechanism and 3602 has a much larger code and data size. 3603 3604 Current Release: 3605 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total 3606 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total 3607 Previous Release: 3608 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total 3609 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total 3610 3611 3612 2) iASL Compiler/Disassembler and Tools: 3613 3614 AcpiExec: Added installation of a handler for the SystemCMOS address 3615 space. This prevents control method abort if a method accesses this 3616 space. 3617 3618 AcpiExec: Added support for multiple EC devices, and now install EC 3619 operation region handler(s) at the actual EC device instead of the 3620 namespace root. This reflects the typical behavior of host operating 3621 systems. 3622 3623 AcpiExec: Updated to ensure that all operation region handlers are 3624 installed before the _REG methods are executed. This prevents a _REG 3625 method from aborting if it accesses an address space has no handler. 3626 AcpiExec installs a handler for every possible address space. 3627 3628 Debugger: Enhanced the "handlers" command to display non-root handlers. 3629 This change enhances the handlers command to display handlers associated 3630 with individual devices throughout the namespace, in addition to the 3631 currently supported display of handlers associated with the root 3632 namespace 3633 node. 3634 3635 ASL Test Suite: Several test suite errors have been identified and 3636 resolved, reducing the total error count during execution. Chao Guan. 3637 3638 ---------------------------------------- 3639 28 March 2013. Summary of changes for version 20130328: 3640 3641 1) ACPICA kernel-resident subsystem: 3642 3643 Fixed several possible race conditions with the internal object reference 3644 counting mechanism. Some of the external ACPICA interfaces update object 3645 reference counts without holding the interpreter or namespace lock. This 3646 change adds a spinlock to protect reference count updates on the internal 3647 ACPICA objects. Reported by and with assistance from Andriy Gapon 3648 (avg (a] FreeBSD.org). 3649 3650 FADT support: Removed an extraneous warning for very large GPE register 3651 sets. This change removes a size mismatch warning if the legacy length 3652 field for a GPE register set is larger than the 64-bit GAS structure can 3653 accommodate. GPE register sets can be larger than the 255-bit width 3654 limitation of the GAS structure. Linn Crosetto (linn (a] hp.com). 3655 3656 _OSI Support: handle any errors from AcpiOsAcquireMutex. Check for error 3657 return from this interface. Handles a possible timeout case if 3658 ACPI_WAIT_FOREVER is modified by the host to be a value less than 3659 "forever". Jung-uk Kim. 3660 3661 Predefined name support: Add allowed/required argument type information 3662 to 3663 the master predefined info table. This change adds the infrastructure to 3664 enable typechecking on incoming arguments for all predefined 3665 methods/objects. It does not actually contain the code that will fully 3666 utilize this information, this is still under development. Also condenses 3667 some duplicate code for the predefined names into a new module, 3668 utilities/utpredef.c 3669 3670 Example Code and Data Size: These are the sizes for the OS-independent 3671 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3672 debug version of the code includes the debug output trace mechanism and 3673 has a much larger code and data size. 3674 3675 Previous Release: 3676 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total 3677 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total 3678 Current Release: 3679 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total 3680 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total 3681 3682 3683 2) iASL Compiler/Disassembler and Tools: 3684 3685 iASL: Implemented a new option to simplify the development of ACPI- 3686 related 3687 BIOS code. Adds support for a new "offset table" output file. The -so 3688 option will create a C table containing the AML table offsets of various 3689 named objects in the namespace so that BIOS code can modify them easily 3690 at 3691 boot time. This can simplify BIOS runtime code by eliminating expensive 3692 searches for "magic values", enhancing boot times and adding greater 3693 reliability. With assistance from Lee Hamel. 3694 3695 iASL: Allow additional predefined names to return zero-length packages. 3696 Now, all predefined names that are defined by the ACPI specification to 3697 return a "variable-length package of packages" are allowed to return a 3698 zero length top-level package. This allows the BIOS to tell the host that 3699 the requested feature is not supported, and supports existing BIOS/ASL 3700 code and practices. 3701 3702 iASL: Changed the "result not used" warning to an error. This is the case 3703 where an ASL operator is effectively a NOOP because the result of the 3704 operation is not stored anywhere. For example: 3705 Add (4, Local0) 3706 There is no target (missing 3rd argument), nor is the function return 3707 value used. This is potentially a very serious problem -- since the code 3708 was probably intended to do something, but for whatever reason, the value 3709 was not stored. Therefore, this issue has been upgraded from a warning to 3710 an error. 3711 3712 AcpiHelp: Added allowable/required argument types to the predefined names 3713 info display. This feature utilizes the recent update to the predefined 3714 names table (above). 3715 3716 ---------------------------------------- 3717 14 February 2013. Summary of changes for version 20130214: 3718 3719 1) ACPICA Kernel-resident Subsystem: 3720 3721 Fixed a possible regression on some hosts: Reinstated the safe return 3722 macros (return_ACPI_STATUS, etc.) that ensure that the argument is 3723 evaluated only once. Although these macros are not needed for the ACPICA 3724 code itself, they are often used by ACPI-related host device drivers 3725 where 3726 the safe feature may be necessary. 3727 3728 Fixed several issues related to the ACPI 5.0 reduced hardware support 3729 (SOC): Now ensure that if the platform declares itself as hardware- 3730 reduced 3731 via the FADT, the following functions become NOOPs (and always return 3732 AE_OK) because ACPI is always enabled by definition on these machines: 3733 AcpiEnable 3734 AcpiDisable 3735 AcpiHwGetMode 3736 AcpiHwSetMode 3737 3738 Dynamic Object Repair: Implemented additional runtime repairs for 3739 predefined name return values. Both of these repairs can simplify code in 3740 the related device drivers that invoke these methods: 3741 1) For the _STR and _MLS names, automatically repair/convert an ASCII 3742 string to a Unicode buffer. 3743 2) For the _CRS, _PRS, and _DMA names, return a resource descriptor with 3744 a 3745 lone end tag descriptor in the following cases: A Return(0) was executed, 3746 a null buffer was returned, or no object at all was returned (non-slack 3747 mode only). Adds a new file, nsconvert.c 3748 ACPICA BZ 998. Bob Moore, Lv Zheng. 3749 3750 Resource Manager: Added additional code to prevent possible infinite 3751 loops 3752 while traversing corrupted or ill-formed resource template buffers. Check 3753 for zero-length resource descriptors in all code that loops through 3754 resource templates (the length field is used to index through the 3755 template). This change also hardens the external AcpiWalkResources and 3756 AcpiWalkResourceBuffer interfaces. 3757 3758 Local Cache Manager: Enhanced the main data structure to eliminate an 3759 unnecessary mechanism to access the next object in the list. Actually 3760 provides a small performance enhancement for hosts that use the local 3761 ACPICA cache manager. Jung-uk Kim. 3762 3763 Example Code and Data Size: These are the sizes for the OS-independent 3764 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3765 debug version of the code includes the debug output trace mechanism and 3766 has a much larger code and data size. 3767 3768 Previous Release: 3769 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total 3770 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total 3771 Current Release: 3772 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total 3773 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total 3774 3775 3776 2) iASL Compiler/Disassembler and Tools: 3777 3778 iASL/Disassembler: Fixed several issues with the definition of the ACPI 3779 5.0 RASF table (RAS Feature Table). This change incorporates late changes 3780 that were made to the ACPI 5.0 specification. 3781 3782 iASL/Disassembler: Added full support for the following new ACPI tables: 3783 1) The MTMR table (MID Timer Table) 3784 2) The VRTC table (Virtual Real Time Clock Table). 3785 Includes header file, disassembler, table compiler, and template support 3786 for both tables. 3787 3788 iASL: Implemented compile-time validation of package objects returned by 3789 predefined names. This new feature validates static package objects 3790 returned by the various predefined names defined to return packages. Both 3791 object types and package lengths are validated, for both parent packages 3792 and sub-packages, if any. The code is similar in structure and behavior 3793 to 3794 the runtime repair mechanism within the AML interpreter and uses the 3795 existing predefined name information table. Adds a new file, aslprepkg.c. 3796 ACPICA BZ 938. 3797 3798 iASL: Implemented auto-detection of binary ACPI tables for disassembly. 3799 This feature detects a binary file with a valid ACPI table header and 3800 invokes the disassembler automatically. Eliminates the need to 3801 specifically invoke the disassembler with the -d option. ACPICA BZ 862. 3802 3803 iASL/Disassembler: Added several warnings for the case where there are 3804 unresolved control methods during the disassembly. This can potentially 3805 cause errors when the output file is compiled, because the disassembler 3806 assumes zero method arguments in these cases (it cannot determine the 3807 actual number of arguments without resolution/definition of the method). 3808 3809 Debugger: Added support to display all resources with a single command. 3810 Invocation of the resources command with no arguments will now display 3811 all 3812 resources within the current namespace. 3813 3814 AcpiHelp: Added descriptive text for each ACPICA exception code displayed 3815 via the -e option. 3816 3817 ---------------------------------------- 3818 17 January 2013. Summary of changes for version 20130117: 3819 3820 1) ACPICA Kernel-resident Subsystem: 3821 3822 Updated the AcpiGetSleepTypeData interface: Allow the \_Sx methods to 3823 return either 1 or 2 integers. Although the ACPI spec defines the \_Sx 3824 objects to return a package containing one integer, most BIOS code 3825 returns 3826 two integers and the previous code reflects that. However, we also need 3827 to 3828 support BIOS code that actually implements to the ACPI spec, and this 3829 change reflects this. 3830 3831 Fixed two issues with the ACPI_DEBUG_PRINT macros: 3832 1) Added the ACPI_DO_WHILE macro to the main DEBUG_PRINT helper macro for 3833 C compilers that require this support. 3834 2) Renamed the internal ACPI_DEBUG macro to ACPI_DO_DEBUG_PRINT since 3835 ACPI_DEBUG is already used by many of the various hosts. 3836 3837 Updated all ACPICA copyrights and signons to 2013. Added the 2013 3838 copyright to all module headers and signons, including the standard Linux 3839 header. This affects virtually every file in the ACPICA core subsystem, 3840 iASL compiler, all ACPICA utilities, and the test suites. 3841 3842 Example Code and Data Size: These are the sizes for the OS-independent 3843 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3844 debug version of the code includes the debug output trace mechanism and 3845 has a much larger code and data size. 3846 3847 Previous Release: 3848 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total 3849 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total 3850 Current Release: 3851 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total 3852 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total 3853 3854 3855 2) iASL Compiler/Disassembler and Tools: 3856 3857 Generic Unix OSL: Use a buffer to eliminate multiple vfprintf()s and 3858 prevent a possible fault on some hosts. Some C libraries modify the arg 3859 pointer parameter to vfprintf making it difficult to call it twice in the 3860 AcpiOsVprintf function. Use a local buffer to workaround this issue. This 3861 does not affect the Windows OSL since the Win C library does not modify 3862 the arg pointer. Chao Guan, Bob Moore. 3863 3864 iASL: Fixed a possible infinite loop when the maximum error count is 3865 reached. If an output file other than the .AML file is specified (such as 3866 a listing file), and the maximum number of errors is reached, do not 3867 attempt to flush data to the output file(s) as the compiler is aborting. 3868 This can cause an infinite loop as the max error count code essentially 3869 keeps calling itself. 3870 3871 iASL/Disassembler: Added an option (-in) to ignore NOOP 3872 opcodes/operators. 3873 Implemented for both the compiler and the disassembler. Often, the NOOP 3874 opcode is used as padding for packages that are changed dynamically by 3875 the 3876 BIOS. When disassembled and recompiled, these NOOPs will cause syntax 3877 errors. This option causes the disassembler to ignore all NOOP opcodes 3878 (0xA3), and it also causes the compiler to ignore all ASL source code 3879 NOOP 3880 statements as well. 3881 3882 Debugger: Enhanced the Sleep command to execute all sleep states. This 3883 change allows Sleep to be invoked with no arguments and causes the 3884 debugger to execute all of the sleep states, 0-5, automatically. 3885 3886 ---------------------------------------- 3887 20 December 2012. Summary of changes for version 20121220: 3888 3889 1) ACPICA Kernel-resident Subsystem: 3890 3891 Implemented a new interface, AcpiWalkResourceBuffer. This interface is an 3892 alternate entry point for AcpiWalkResources and improves the usability of 3893 the resource manager by accepting as input a buffer containing the output 3894 of either a _CRS, _PRS, or _AEI method. The key functionality is that the 3895 input buffer is not deleted by this interface so that it can be used by 3896 the host later. See the ACPICA reference for details. 3897 3898 Interpreter: Add a warning if a 64-bit constant appears in a 32-bit table 3899 (DSDT version < 2). The constant will be truncated and this warning 3900 reflects that behavior. 3901 3902 Resource Manager: Add support for the new ACPI 5.0 wake bit in the IRQ, 3903 ExtendedInterrupt, and GpioInt descriptors. This change adds support to 3904 both get and set the new wake bit in these descriptors, separately from 3905 the existing share bit. Reported by Aaron Lu. 3906 3907 Interpreter: Fix Store() when an implicit conversion is not possible. For 3908 example, in the cases such as a store of a string to an existing package 3909 object, implement the store as a CopyObject(). This is a small departure 3910 from the ACPI specification which states that the control method should 3911 be 3912 aborted in this case. However, the ASLTS suite depends on this behavior. 3913 3914 Performance improvement for the various FUNCTION_TRACE and DEBUG_PRINT 3915 macros: check if debug output is currently enabled as soon as possible to 3916 minimize performance impact if debug is in fact not enabled. 3917 3918 Source code restructuring: Cleanup to improve modularity. The following 3919 new files have been added: dbconvert.c, evhandler.c, nsprepkg.c, 3920 psopinfo.c, psobject.c, rsdumpinfo.c, utstring.c, and utownerid.c. 3921 Associated makefiles and project files have been updated. 3922 3923 Changed an exception code for LoadTable operator. For the case where one 3924 of the input strings is too long, change the returned exception code from 3925 AE_BAD_PARAMETER to AE_AML_STRING_LIMIT. 3926 3927 Fixed a possible memory leak in dispatcher error path. On error, delete 3928 the mutex object created during method mutex creation. Reported by 3929 tim.gardner (a] canonical.com. 3930 3931 Example Code and Data Size: These are the sizes for the OS-independent 3932 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3933 debug version of the code includes the debug output trace mechanism and 3934 has a much larger code and data size. 3935 3936 Previous Release: 3937 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total 3938 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 3939 Current Release: 3940 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total 3941 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total 3942 3943 3944 2) iASL Compiler/Disassembler and Tools: 3945 3946 iASL: Disallow a method call as argument to the ObjectType ASL operator. 3947 This change tracks an errata to the ACPI 5.0 document. The AML grammar 3948 will not allow the interpreter to differentiate between a method and a 3949 method invocation when these are used as an argument to the ObjectType 3950 operator. The ACPI specification change is to disallow a method 3951 invocation 3952 (UserTerm) for the ObjectType operator. 3953 3954 Finish support for the TPM2 and CSRT tables in the headers, table 3955 compiler, and disassembler. 3956 3957 Unix user-space OSL: Fix a problem with WaitSemaphore where the timeout 3958 always expires immediately if the semaphore is not available. The 3959 original 3960 code was using a relative-time timeout, but sem_timedwait requires the 3961 use 3962 of an absolute time. 3963 3964 iASL: Added a remark if the Timer() operator is used within a 32-bit 3965 table. This operator returns a 64-bit time value that will be truncated 3966 within a 32-bit table. 3967 3968 iASL Source code restructuring: Cleanup to improve modularity. The 3969 following new files have been added: aslhex.c, aslxref.c, aslnamesp.c, 3970 aslmethod.c, and aslfileio.c. Associated makefiles and project files have 3971 been updated. 3972 3973 3974 ---------------------------------------- 3975 14 November 2012. Summary of changes for version 20121114: 3976 3977 1) ACPICA Kernel-resident Subsystem: 3978 3979 Implemented a performance enhancement for ACPI/AML Package objects. This 3980 change greatly increases the performance of Package objects within the 3981 interpreter. It changes the processing of reference counts for packages 3982 by 3983 optimizing for the most common case where the package sub-objects are 3984 either Integers, Strings, or Buffers. Increases the overall performance 3985 of 3986 the ASLTS test suite by 1.5X (Increases the Slack Mode performance by 3987 2X.) 3988 Chao Guan. ACPICA BZ 943. 3989 3990 Implemented and deployed common macros to extract flag bits from resource 3991 descriptors. Improves readability and maintainability of the code. Fixes 3992 a 3993 problem with the UART serial bus descriptor for the number of data bits 3994 flags (was incorrectly 2 bits, should be 3). 3995 3996 Enhanced the ACPI_GETx and ACPI_SETx macros. Improved the implementation 3997 of the macros and changed the SETx macros to the style of (destination, 3998 source). Also added ACPI_CASTx companion macros. Lv Zheng. 3999 4000 Example Code and Data Size: These are the sizes for the OS-independent 4001 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4002 debug version of the code includes the debug output trace mechanism and 4003 has a much larger code and data size. 4004 4005 Previous Release: 4006 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total 4007 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 4008 Current Release: 4009 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total 4010 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 4011 4012 4013 2) iASL Compiler/Disassembler and Tools: 4014 4015 Disassembler: Added the new ACPI 5.0 interrupt sharing flags. This change 4016 adds the ShareAndWake and ExclusiveAndWake flags which were added to the 4017 Irq, Interrupt, and Gpio resource descriptors in ACPI 5.0. ACPICA BZ 986. 4018 4019 Disassembler: Fixed a problem with external declaration generation. Fixes 4020 a problem where an incorrect pathname could be generated for an external 4021 declaration if the original reference to the object includes leading 4022 carats (^). ACPICA BZ 984. 4023 4024 Debugger: Completed a major update for the Disassemble<method> command. 4025 This command was out-of-date and did not properly disassemble control 4026 methods that had any reasonable complexity. This fix brings the command 4027 up 4028 to the same level as the rest of the disassembler. Adds one new file, 4029 dmdeferred.c, which is existing code that is now common with the main 4030 disassembler and the debugger disassemble command. ACPICA MZ 978. 4031 4032 iASL: Moved the parser entry prototype to avoid a duplicate declaration. 4033 Newer versions of Bison emit this prototype, so moved the prototype out 4034 of 4035 the iASL header to where it is actually used in order to avoid a 4036 duplicate 4037 declaration. 4038 4039 iASL/Tools: Standardized use of the stream I/O functions: 4040 1) Ensure check for I/O error after every fopen/fread/fwrite 4041 2) Ensure proper order of size/count arguments for fread/fwrite 4042 3) Use test of (Actual != Requested) after all fwrite, and most fread 4043 4) Standardize I/O error messages 4044 Improves reliability and maintainability of the code. Bob Moore, Lv 4045 Zheng. 4046 ACPICA BZ 981. 4047 4048 Disassembler: Prevent duplicate External() statements. During generation 4049 of external statements, detect similar pathnames that are actually 4050 duplicates such as these: 4051 External (\ABCD) 4052 External (ABCD) 4053 Remove all leading '\' characters from pathnames during the external 4054 statement generation so that duplicates will be detected and tossed. 4055 ACPICA BZ 985. 4056 4057 Tools: Replace low-level I/O with stream I/O functions. Replace 4058 open/read/write/close with the stream I/O equivalents 4059 fopen/fread/fwrite/fclose for portability and performance. Lv Zheng, Bob 4060 Moore. 4061 4062 AcpiBin: Fix for the dump-to-hex function. Now correctly output the table 4063 name header so that AcpiXtract recognizes the output file/table. 4064 4065 iASL: Remove obsolete -2 option flag. Originally intended to force the 4066 compiler/disassembler into an ACPI 2.0 mode, this was never implemented 4067 and the entire concept is now obsolete. 4068 4069 ---------------------------------------- 4070 18 October 2012. Summary of changes for version 20121018: 4071 4072 4073 1) ACPICA Kernel-resident Subsystem: 4074 4075 Updated support for the ACPI 5.0 MPST table. Fixes some problems 4076 introduced by late changes to the table as it was added to the ACPI 5.0 4077 specification. Includes header, disassembler, and data table compiler 4078 support as well as a new version of the MPST template. 4079 4080 AcpiGetObjectInfo: Enhanced the device object support to include the ACPI 4081 5.0 _SUB method. Now calls _SUB in addition to the other PNP-related ID 4082 methods: _HID, _CID, and _UID. 4083 4084 Changed ACPI_DEVICE_ID to ACPI_PNP_DEVICE_ID. Also changed 4085 ACPI_DEVICE_ID_LIST to ACPI_PNP_DEVICE_ID_LIST. These changes prevent 4086 name collisions on hosts that reserve the *_DEVICE_ID (or *DeviceId) 4087 names for their various drivers. Affects the AcpiGetObjectInfo external 4088 interface, and other internal interfaces as well. 4089 4090 Added and deployed a new macro for ACPI_NAME management: ACPI_MOVE_NAME. 4091 This macro resolves to a simple 32-bit move of the 4-character ACPI_NAME 4092 on machines that support non-aligned transfers. Optimizes for this case 4093 rather than using a strncpy. With assistance from Zheng Lv. 4094 4095 Resource Manager: Small fix for buffer size calculation. Fixed a one byte 4096 error in the output buffer calculation. Feng Tang. ACPICA BZ 849. 4097 4098 Added a new debug print message for AML mutex objects that are force- 4099 released. At control method termination, any currently acquired mutex 4100 objects are force-released. Adds a new debug-only message for each one 4101 that is released. 4102 4103 Audited/updated all ACPICA return macros and the function debug depth 4104 counter: 1) Ensure that all functions that use the various TRACE macros 4105 also use the appropriate ACPICA return macros. 2) Ensure that all normal 4106 return statements surround the return expression (value) with parens to 4107 ensure consistency across the ACPICA code base. Guan Chao, Tang Feng, 4108 Zheng Lv, Bob Moore. ACPICA Bugzilla 972. 4109 4110 Global source code changes/maintenance: All extra lines at the start and 4111 end of each source file have been removed for consistency. Also, within 4112 comments, all new sentences start with a single space instead of a double 4113 space, again for consistency across the code base. 4114 4115 Example Code and Data Size: These are the sizes for the OS-independent 4116 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4117 debug version of the code includes the debug output trace mechanism and 4118 has a much larger code and data size. 4119 4120 Previous Release: 4121 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total 4122 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total 4123 Current Release: 4124 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total 4125 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 4126 4127 4128 2) iASL Compiler/Disassembler and Tools: 4129 4130 AcpiExec: Improved the algorithm used for memory leak/corruption 4131 detection. Added some intelligence to the code that maintains the global 4132 list of allocated memory. The list is now ordered by allocated memory 4133 address, significantly improving performance. When running AcpiExec on 4134 the ASLTS test suite, speed improvements of 3X to 5X are seen, depending 4135 on the platform and/or the environment. Note, this performance 4136 enhancement affects the AcpiExec utility only, not the kernel-resident 4137 ACPICA code. 4138 4139 Enhanced error reporting for invalid AML opcodes and bad ACPI_NAMEs. For 4140 the disassembler, dump the 48 bytes surrounding the invalid opcode. Fix 4141 incorrect table offset reported for invalid opcodes. Report the original 4142 32-bit value for bad ACPI_NAMEs (as well as the repaired name.) 4143 4144 Disassembler: Enhanced the -vt option to emit the binary table data in 4145 hex format to assist with debugging. 4146 4147 Fixed a potential filename buffer overflow in osunixdir.c. Increased the 4148 size of file structure. Colin Ian King. 4149 4150 ---------------------------------------- 4151 13 September 2012. Summary of changes for version 20120913: 4152 4153 4154 1) ACPICA Kernel-resident Subsystem: 4155 4156 ACPI 5.0: Added two new notify types for the Hardware Error Notification 4157 Structure within the Hardware Error Source Table (HEST) table -- CMCI(5) 4158 and 4159 MCE(6). 4160 4161 Table Manager: Merged/removed duplicate code in the root table resize 4162 functions. One function is external, the other is internal. Lv Zheng, 4163 ACPICA 4164 BZ 846. 4165 4166 Makefiles: Completely removed the obsolete "Linux" makefiles under 4167 acpica/generate/linux. These makefiles are obsolete and have been 4168 replaced 4169 by 4170 the generic unix makefiles under acpica/generate/unix. 4171 4172 Makefiles: Ensure that binary files always copied properly. Minor rule 4173 change 4174 to ensure that the final binary output files are always copied up to the 4175 appropriate binary directory (bin32 or bin64.) 4176 4177 Example Code and Data Size: These are the sizes for the OS-independent 4178 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4179 debug 4180 version of the code includes the debug output trace mechanism and has a 4181 much 4182 larger code and data size. 4183 4184 Previous Release: 4185 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total 4186 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total 4187 Current Release: 4188 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total 4189 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total 4190 4191 4192 2) iASL Compiler/Disassembler and Tools: 4193 4194 Disassembler: Fixed a possible fault during the disassembly of resource 4195 descriptors when a second parse is required because of the invocation of 4196 external control methods within the table. With assistance from 4197 adq (a] lidskialf.net. ACPICA BZ 976. 4198 4199 iASL: Fixed a namepath optimization problem. An error can occur if the 4200 parse 4201 node that contains the namepath to be optimized does not have a parent 4202 node 4203 that is a named object. This change fixes the problem. 4204 4205 iASL: Fixed a regression where the AML file is not deleted on errors. The 4206 AML 4207 output file should be deleted if there are any errors during the 4208 compiler. 4209 The 4210 only exception is if the -f (force output) option is used. ACPICA BZ 974. 4211 4212 iASL: Added a feature to automatically increase internal line buffer 4213 sizes. 4214 Via realloc(), automatically increase the internal line buffer sizes as 4215 necessary to support very long source code lines. The current version of 4216 the 4217 preprocessor requires a buffer long enough to contain full source code 4218 lines. 4219 This change increases the line buffer(s) if the input lines go beyond the 4220 current buffer size. This eliminates errors that occurred when a source 4221 code 4222 line was longer than the buffer. 4223 4224 iASL: Fixed a problem with constant folding in method declarations. The 4225 SyncLevel term is a ByteConstExpr, and incorrect code would be generated 4226 if a 4227 Type3 opcode was used. 4228 4229 Debugger: Improved command help support. For incorrect argument count, 4230 display 4231 full help for the command. For help command itself, allow an argument to 4232 specify a command. 4233 4234 Test Suites: Several bug fixes for the ASLTS suite reduces the number of 4235 errors during execution of the suite. Guan Chao. 4236 4237 ---------------------------------------- 4238 16 August 2012. Summary of changes for version 20120816: 4239 4240 4241 1) ACPICA Kernel-resident Subsystem: 4242 4243 Removed all use of the deprecated _GTS and _BFS predefined methods. The 4244 _GTS 4245 (Going To Sleep) and _BFS (Back From Sleep) methods are essentially 4246 deprecated and will probably be removed from the ACPI specification. 4247 Windows 4248 does not invoke them, and reportedly never will. The final nail in the 4249 coffin 4250 is that the ACPI specification states that these methods must be run with 4251 interrupts off, which is not going to happen in a kernel interpreter. 4252 Note: 4253 Linux has removed all use of the methods also. It was discovered that 4254 invoking these functions caused failures on some machines, probably 4255 because 4256 they were never tested since Windows does not call them. Affects two 4257 external 4258 interfaces, AcpiEnterSleepState and AcpiLeaveSleepStatePrep. Tang Feng. 4259 ACPICA BZ 969. 4260 4261 Implemented support for complex bit-packed buffers returned from the _PLD 4262 (Physical Location of Device) predefined method. Adds a new external 4263 interface, AcpiDecodePldBuffer that parses the buffer into a more usable 4264 C 4265 structure. Note: C Bitfields cannot be used for this type of predefined 4266 structure since the memory layout of individual bitfields is not defined 4267 by 4268 the C language. In addition, there are endian concerns where a compiler 4269 will 4270 change the bitfield ordering based on the machine type. The new ACPICA 4271 interface eliminates these issues, and should be called after _PLD is 4272 executed. ACPICA BZ 954. 4273 4274 Implemented a change to allow a scope change to root (via "Scope (\)") 4275 during 4276 execution of module-level ASL code (code that is executed at table load 4277 time.) Lin Ming. 4278 4279 Added the Windows8/Server2012 string for the _OSI method. This change 4280 adds 4281 a 4282 new _OSI string, "Windows 2012" for both Windows 8 and Windows Server 4283 2012. 4284 4285 Added header support for the new ACPI tables DBG2 (Debug Port Table Type 4286 2) 4287 and CSRT (Core System Resource Table). 4288 4289 Added struct header support for the _FDE, _GRT, _GTM, and _SRT predefined 4290 names. This simplifies access to the buffers returned by these predefined 4291 names. Adds a new file, include/acbuffer.h. ACPICA BZ 956. 4292 4293 GPE support: Removed an extraneous parameter from the various low-level 4294 internal GPE functions. Tang Feng. 4295 4296 Removed the linux makefiles from the unix packages. The generate/linux 4297 makefiles are obsolete and have been removed from the unix tarball 4298 release 4299 packages. The replacement makefiles are under generate/unix, and there is 4300 a 4301 top-level makefile under the main acpica directory. ACPICA BZ 967, 912. 4302 4303 Updates for Unix makefiles: 4304 1) Add -D_FORTIFY_SOURCE=2 for gcc generation. Arjan van de Ven. 4305 2) Update linker flags (move to end of command line) for AcpiExec 4306 utility. 4307 Guan Chao. 4308 4309 Split ACPICA initialization functions to new file, utxfinit.c. Split from 4310 utxface.c to improve modularity and reduce file size. 4311 4312 Example Code and Data Size: These are the sizes for the OS-independent 4313 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4314 debug version of the code includes the debug output trace mechanism and 4315 has a 4316 much larger code and data size. 4317 4318 Previous Release: 4319 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total 4320 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total 4321 Current Release: 4322 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total 4323 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total 4324 4325 4326 2) iASL Compiler/Disassembler and Tools: 4327 4328 iASL: Fixed a problem with constant folding for fixed-length constant 4329 expressions. The constant-folding code was not being invoked for constant 4330 expressions that allow the use of type 3/4/5 opcodes to generate 4331 constants 4332 for expressions such as ByteConstExpr, WordConstExpr, etc. This could 4333 result 4334 in the generation of invalid AML bytecode. ACPICA BZ 970. 4335 4336 iASL: Fixed a generation issue on newer versions of Bison. Newer versions 4337 apparently automatically emit some of the necessary externals. This 4338 change 4339 handles these versions in order to eliminate generation warnings. 4340 4341 Disassembler: Added support to decode the DBG2 and CSRT ACPI tables. 4342 4343 Disassembler: Add support to decode _PLD buffers. The decoded buffer 4344 appears 4345 within comments in the output file. 4346 4347 Debugger: Fixed a regression with the "Threads" command where 4348 AE_BAD_PARAMETER was always returned. 4349 4350 ---------------------------------------- 4351 11 July 2012. Summary of changes for version 20120711: 4352 4353 1) ACPICA Kernel-resident Subsystem: 4354 4355 Fixed a possible fault in the return package object repair code. Fixes a 4356 problem that can occur when a lone package object is wrapped with an 4357 outer 4358 package object in order to force conformance to the ACPI specification. 4359 Can 4360 affect these predefined names: _ALR, _MLS, _PSS, _TRT, _TSS, _PRT, _HPX, 4361 _DLM, 4362 _CSD, _PSD, _TSD. 4363 4364 Removed code to disable/enable bus master arbitration (ARB_DIS bit in the 4365 PM2_CNT register) in the ACPICA sleep/wake interfaces. Management of the 4366 ARB_DIS bit must be implemented in the host-dependent C3 processor power 4367 state 4368 support. Note, ARB_DIS is obsolete and only applies to older chipsets, 4369 both 4370 Intel and other vendors. (for Intel: ICH4-M and earlier) 4371 4372 This change removes the code to disable/enable bus master arbitration 4373 during 4374 suspend/resume. Use of the ARB_DIS bit in the optional PM2_CNT register 4375 causes 4376 resume problems on some machines. The change has been in use for over 4377 seven 4378 years within Linux. 4379 4380 Implemented two new external interfaces to support host-directed dynamic 4381 ACPI 4382 table load and unload. They are intended to simplify the host 4383 implementation 4384 of hot-plug support: 4385 AcpiLoadTable: Load an SSDT from a buffer into the namespace. 4386 AcpiUnloadParentTable: Unload an SSDT via a named object owned by the 4387 table. 4388 See the ACPICA reference for additional details. Adds one new file, 4389 components/tables/tbxfload.c 4390 4391 Implemented and deployed two new interfaces for errors and warnings that 4392 are 4393 known to be caused by BIOS/firmware issues: 4394 AcpiBiosError: Prints "ACPI Firmware Error" message. 4395 AcpiBiosWarning: Prints "ACPI Firmware Warning" message. 4396 Deployed these new interfaces in the ACPICA Table Manager code for ACPI 4397 table 4398 and FADT errors. Additional deployment to be completed as appropriate in 4399 the 4400 future. The associated conditional macros are ACPI_BIOS_ERROR and 4401 ACPI_BIOS_WARNING. See the ACPICA reference for additional details. 4402 ACPICA 4403 BZ 4404 843. 4405 4406 Implicit notify support: ensure that no memory allocation occurs within a 4407 critical region. This fix moves a memory allocation outside of the time 4408 that a 4409 spinlock is held. Fixes issues on systems that do not allow this 4410 behavior. 4411 Jung-uk Kim. 4412 4413 Split exception code utilities and tables into a new file, 4414 utilities/utexcep.c 4415 4416 Example Code and Data Size: These are the sizes for the OS-independent 4417 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4418 debug 4419 version of the code includes the debug output trace mechanism and has a 4420 much 4421 larger code and data size. 4422 4423 Previous Release: 4424 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total 4425 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total 4426 Current Release: 4427 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total 4428 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total 4429 4430 4431 2) iASL Compiler/Disassembler and Tools: 4432 4433 iASL: Fixed a parser problem for hosts where EOF is defined as -1 instead 4434 of 4435 0. Jung-uk Kim. 4436 4437 Debugger: Enhanced the "tables" command to emit additional information 4438 about 4439 the current set of ACPI tables, including the owner ID and flags decode. 4440 4441 Debugger: Reimplemented the "unload" command to use the new 4442 AcpiUnloadParentTable external interface. This command was disable 4443 previously 4444 due to need for an unload interface. 4445 4446 AcpiHelp: Added a new option to decode ACPICA exception codes. The -e 4447 option 4448 will decode 16-bit hex status codes (ACPI_STATUS) to name strings. 4449 4450 ---------------------------------------- 4451 20 June 2012. Summary of changes for version 20120620: 4452 4453 4454 1) ACPICA Kernel-resident Subsystem: 4455 4456 Implemented support to expand the "implicit notify" feature to allow 4457 multiple 4458 devices to be notified by a single GPE. This feature automatically 4459 generates a 4460 runtime device notification in the absence of a BIOS-provided GPE control 4461 method (_Lxx/_Exx) or a host-installed handler for the GPE. Implicit 4462 notify is 4463 provided by ACPICA for Windows compatibility, and is a workaround for 4464 BIOS 4465 AML 4466 code errors. See the description of the AcpiSetupGpeForWake interface in 4467 the 4468 APCICA reference. Bob Moore, Rafael Wysocki. ACPICA BZ 918. 4469 4470 Changed some comments and internal function names to simplify and ensure 4471 correctness of the Linux code translation. No functional changes. 4472 4473 Example Code and Data Size: These are the sizes for the OS-independent 4474 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4475 debug 4476 version of the code includes the debug output trace mechanism and has a 4477 much 4478 larger code and data size. 4479 4480 Previous Release: 4481 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total 4482 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total 4483 Current Release: 4484 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total 4485 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total 4486 4487 4488 2) iASL Compiler/Disassembler and Tools: 4489 4490 Disassembler: Added support to emit short, commented descriptions for the 4491 ACPI 4492 predefined names in order to improve the readability of the disassembled 4493 output. ACPICA BZ 959. Changes include: 4494 1) Emit descriptions for all standard predefined names (_INI, _STA, 4495 _PRW, 4496 etc.) 4497 2) Emit generic descriptions for the special names (_Exx, _Qxx, etc.) 4498 3) Emit descriptions for the resource descriptor names (_MIN, _LEN, 4499 etc.) 4500 4501 AcpiSrc: Fixed several long-standing Linux code translation issues. 4502 Argument 4503 descriptions in function headers are now translated properly to lower 4504 case 4505 and 4506 underscores. ACPICA BZ 961. Also fixes translation problems such as 4507 these: 4508 (old -> new) 4509 i_aSL -> iASL 4510 00-7_f -> 00-7F 4511 16_k -> 16K 4512 local_fADT -> local_FADT 4513 execute_oSI -> execute_OSI 4514 4515 iASL: Fixed a problem where null bytes were inadvertently emitted into 4516 some 4517 listing files. 4518 4519 iASL: Added the existing debug options to the standard help screen. There 4520 are 4521 no longer two different help screens. ACPICA BZ 957. 4522 4523 AcpiHelp: Fixed some typos in the various predefined name descriptions. 4524 Also 4525 expand some of the descriptions where appropriate. 4526 4527 iASL: Fixed the -ot option (display compile times/statistics). Was not 4528 working 4529 properly for standard output; only worked for the debug file case. 4530 4531 ---------------------------------------- 4532 18 May 2012. Summary of changes for version 20120518: 4533 4534 4535 1) ACPICA Core Subsystem: 4536 4537 Added a new OSL interface, AcpiOsWaitEventsComplete. This interface is 4538 defined 4539 to block until asynchronous events such as notifies and GPEs have 4540 completed. 4541 Within ACPICA, it is only called before a notify or GPE handler is 4542 removed/uninstalled. It also may be useful for the host OS within related 4543 drivers such as the Embedded Controller driver. See the ACPICA reference 4544 for 4545 additional information. ACPICA BZ 868. 4546 4547 ACPI Tables: Added a new error message for a possible overflow failure 4548 during 4549 the conversion of FADT 32-bit legacy register addresses to internal 4550 common 4551 64- 4552 bit GAS structure representation. The GAS has a one-byte "bit length" 4553 field, 4554 thus limiting the register length to 255 bits. ACPICA BZ 953. 4555 4556 Example Code and Data Size: These are the sizes for the OS-independent 4557 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4558 debug 4559 version of the code includes the debug output trace mechanism and has a 4560 much 4561 larger code and data size. 4562 4563 Previous Release: 4564 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 4565 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total 4566 Current Release: 4567 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total 4568 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total 4569 4570 4571 2) iASL Compiler/Disassembler and Tools: 4572 4573 iASL: Added the ACPI 5.0 "PCC" keyword for use in the Register() ASL 4574 macro. 4575 This keyword was added late in the ACPI 5.0 release cycle and was not 4576 implemented until now. 4577 4578 Disassembler: Added support for Operation Region externals. Adds missing 4579 support for operation regions that are defined in another table, and 4580 referenced locally via a Field or BankField ASL operator. Now generates 4581 the 4582 correct External statement. 4583 4584 Disassembler: Several additional fixes for the External() statement 4585 generation 4586 related to some ASL operators. Also, order the External() statements 4587 alphabetically in the disassembler output. Fixes the External() 4588 generation 4589 for 4590 the Create* field, Alias, and Scope operators: 4591 1) Create* buffer field operators - fix type mismatch warning on 4592 disassembly 4593 2) Alias - implement missing External support 4594 3) Scope - fix to make sure all necessary externals are emitted. 4595 4596 iASL: Improved pathname support. For include files, merge the prefix 4597 pathname 4598 with the file pathname and eliminate unnecessary components. Convert 4599 backslashes in all pathnames to forward slashes, for readability. Include 4600 file 4601 pathname changes affect both #include and Include() type operators. 4602 4603 iASL/DTC/Preprocessor: Gracefully handle early EOF. Handle an EOF at the 4604 end 4605 of a valid line by inserting a newline and then returning the EOF during 4606 the 4607 next call to GetNextLine. Prevents the line from being ignored due to EOF 4608 condition. 4609 4610 iASL: Implemented some changes to enhance the IDE support (-vi option.) 4611 Error 4612 and Warning messages are now correctly recognized for both the source 4613 code 4614 browser and the global error and warning counts. 4615 4616 ---------------------------------------- 4617 20 April 2012. Summary of changes for version 20120420: 4618 4619 4620 1) ACPICA Core Subsystem: 4621 4622 Implemented support for multiple notify handlers. This change adds 4623 support 4624 to 4625 allow multiple system and device notify handlers on Device, Thermal Zone, 4626 and 4627 Processor objects. This can simplify the host OS notification 4628 implementation. 4629 Also re-worked and restructured the entire notify support code to 4630 simplify 4631 handler installation, handler removal, notify event queuing, and notify 4632 dispatch to handler(s). Note: there can still only be two global notify 4633 handlers - one for system notifies and one for device notifies. There are 4634 no 4635 changes to the existing handler install/remove interfaces. Lin Ming, Bob 4636 Moore, Rafael Wysocki. 4637 4638 Fixed a regression in the package repair code where the object reference 4639 count was calculated incorrectly. Regression was introduced in the commit 4640 "Support to add Package wrappers". 4641 4642 Fixed a couple possible memory leaks in the AML parser, in the error 4643 recovery 4644 path. Jesper Juhl, Lin Ming. 4645 4646 Example Code and Data Size: These are the sizes for the OS-independent 4647 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4648 debug version of the code includes the debug output trace mechanism and 4649 has a 4650 much larger code and data size. 4651 4652 Previous Release: 4653 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 4654 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 4655 Current Release: 4656 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 4657 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total 4658 4659 4660 2) iASL Compiler/Disassembler and Tools: 4661 4662 iASL: Fixed a problem with the resource descriptor support where the 4663 length 4664 of the StartDependentFn and StartDependentFnNoPrio descriptors were not 4665 included in cumulative descriptor offset, resulting in incorrect values 4666 for 4667 resource tags within resource descriptors appearing after a 4668 StartDependent* 4669 descriptor. Reported by Petr Vandrovec. ACPICA BZ 949. 4670 4671 iASL and Preprocessor: Implemented full support for the #line directive 4672 to 4673 correctly track original source file line numbers through the .i 4674 preprocessor 4675 output file - for error and warning messages. 4676 4677 iASL: Expand the allowable byte constants for address space IDs. 4678 Previously, 4679 the allowable range was 0x80-0xFF (user-defined spaces), now the range is 4680 0x0A-0xFF to allow for custom and new IDs without changing the compiler. 4681 4682 iASL: Add option to treat all warnings as errors (-we). ACPICA BZ 948. 4683 4684 iASL: Add option to completely disable the preprocessor (-Pn). 4685 4686 iASL: Now emit all error/warning messages to standard error (stderr) by 4687 default (instead of the previous stdout). 4688 4689 ASL Test Suite (ASLTS): Reduce iASL warnings due to use of Switch(). 4690 Update 4691 for resource descriptor offset fix above. Update/cleanup error output 4692 routines. Enable and send iASL errors/warnings to an error logfile 4693 (error.txt). Send all other iASL output to a logfile (compiler.txt). 4694 Fixed 4695 several extraneous "unrecognized operator" messages. 4696 4697 ---------------------------------------- 4698 20 March 2012. Summary of changes for version 20120320: 4699 4700 4701 1) ACPICA Core Subsystem: 4702 4703 Enhanced the sleep/wake interfaces to optionally execute the _GTS method 4704 (Going To Sleep) and the _BFS method (Back From Sleep). Windows 4705 apparently 4706 does not execute these methods, and therefore these methods are often 4707 untested. It has been seen on some systems where the execution of these 4708 methods causes errors and also prevents the machine from entering S5. It 4709 is 4710 therefore suggested that host operating systems do not execute these 4711 methods 4712 by default. In the future, perhaps these methods can be optionally 4713 executed 4714 based on the age of the system and/or what is the newest version of 4715 Windows 4716 that the BIOS asks for via _OSI. Changed interfaces: AcpiEnterSleepState 4717 and 4718 AcpileaveSleepStatePrep. See the ACPICA reference and Linux BZ 13041. Lin 4719 Ming. 4720 4721 Fixed a problem where the length of the local/common FADT was set too 4722 early. 4723 The local FADT table length cannot be set to the common length until the 4724 original length has been examined. There is code that checks the table 4725 length 4726 and sets various fields appropriately. This can affect older machines 4727 with 4728 early FADT versions. For example, this can cause inadvertent writes to 4729 the 4730 CST_CNT register. Julian Anastasov. 4731 4732 Fixed a mapping issue related to a physical table override. Use the 4733 deferred 4734 mapping mechanism for tables loaded via the physical override OSL 4735 interface. 4736 This allows for early mapping before the virtual memory manager is 4737 available. 4738 Thomas Renninger, Bob Moore. 4739 4740 Enhanced the automatic return-object repair code: Repair a common problem 4741 with 4742 predefined methods that are defined to return a variable-length Package 4743 of 4744 sub-objects. If there is only one sub-object, some BIOS ASL code 4745 mistakenly 4746 simply returns the single object instead of a Package with one sub- 4747 object. 4748 This new support will repair this error by wrapping a Package object 4749 around 4750 the original object, creating the correct and expected Package with one 4751 sub- 4752 object. Names that can be repaired in this manner include: _ALR, _CSD, 4753 _HPX, 4754 _MLS, _PLD, _PRT, _PSS, _TRT, _TSS, _BCL, _DOD, _FIX, and _Sx. ACPICA BZ 4755 939. 4756 4757 Changed the exception code returned for invalid ACPI paths passed as 4758 parameters to external interfaces such as AcpiEvaluateObject. Was 4759 AE_BAD_PARAMETER, now is the more sensible AE_BAD_PATHNAME. 4760 4761 Example Code and Data Size: These are the sizes for the OS-independent 4762 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4763 debug 4764 version of the code includes the debug output trace mechanism and has a 4765 much 4766 larger code and data size. 4767 4768 Previous Release: 4769 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total 4770 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 4771 Current Release: 4772 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 4773 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 4774 4775 4776 2) iASL Compiler/Disassembler and Tools: 4777 4778 iASL: Added the infrastructure and initial implementation of a integrated 4779 C- 4780 like preprocessor. This will simplify BIOS development process by 4781 eliminating 4782 the need for a separate preprocessing step during builds. On Windows, it 4783 also 4784 eliminates the need to install a separate C compiler. ACPICA BZ 761. Some 4785 features including full #define() macro support are still under 4786 development. 4787 These preprocessor directives are supported: 4788 #define 4789 #elif 4790 #else 4791 #endif 4792 #error 4793 #if 4794 #ifdef 4795 #ifndef 4796 #include 4797 #pragma message 4798 #undef 4799 #warning 4800 In addition, these new command line options are supported: 4801 -D <symbol> Define symbol for preprocessor use 4802 -li Create preprocessed output file (*.i) 4803 -P Preprocess only and create preprocessor output file (*.i) 4804 4805 Table Compiler: Fixed a problem where the equals operator within an 4806 expression 4807 did not work properly. 4808 4809 Updated iASL to use the current versions of Bison/Flex. Updated the 4810 Windows 4811 project file to invoke these tools from the standard location. ACPICA BZ 4812 904. 4813 Versions supported: 4814 Flex for Windows: V2.5.4 4815 Bison for Windows: V2.4.1 4816 4817 ---------------------------------------- 4818 15 February 2012. Summary of changes for version 20120215: 4819 4820 4821 1) ACPICA Core Subsystem: 4822 4823 There have been some major changes to the sleep/wake support code, as 4824 described below (a - e). 4825 4826 a) The AcpiLeaveSleepState has been split into two interfaces, similar to 4827 AcpiEnterSleepStatePrep and AcpiEnterSleepState. The new interface is 4828 AcpiLeaveSleepStatePrep. This allows the host to perform actions between 4829 the 4830 time the _BFS method is called and the _WAK method is called. NOTE: all 4831 hosts 4832 must update their wake/resume code or else sleep/wake will not work 4833 properly. 4834 Rafael Wysocki. 4835 4836 b) In AcpiLeaveSleepState, now enable all runtime GPEs before calling the 4837 _WAK 4838 method. Some machines require that the GPEs are enabled before the _WAK 4839 method 4840 is executed. Thomas Renninger. 4841 4842 c) In AcpiLeaveSleepState, now always clear the WAK_STS (wake status) 4843 bit. 4844 Some BIOS code assumes that WAK_STS will be cleared on resume and use it 4845 to 4846 determine whether the system is rebooting or resuming. Matthew Garrett. 4847 4848 d) Move the invocations of _GTS (Going To Sleep) and _BFS (Back From 4849 Sleep) to 4850 match the ACPI specification requirement. Rafael Wysocki. 4851 4852 e) Implemented full support for the ACPI 5.0 SleepStatus and SleepControl 4853 registers within the V5 FADT. This support adds two new files: 4854 hardware/hwesleep.c implements the support for the new registers. Moved 4855 all 4856 sleep/wake external interfaces to hardware/hwxfsleep.c. 4857 4858 4859 Added a new OSL interface for ACPI table overrides, 4860 AcpiOsPhysicalTableOverride. This interface allows the host to override a 4861 table via a physical address, instead of the logical address required by 4862 AcpiOsTableOverride. This simplifies the host implementation. Initial 4863 implementation by Thomas Renninger. The ACPICA implementation creates a 4864 single 4865 shared function for table overrides that attempts both a logical and a 4866 physical override. 4867 4868 Expanded the OSL memory read/write interfaces to 64-bit data 4869 (AcpiOsReadMemory, AcpiOsWriteMemory.) This enables full 64-bit memory 4870 transfer support for GAS register structures passed to AcpiRead and 4871 AcpiWrite. 4872 4873 Implemented the ACPI_REDUCED_HARDWARE option to allow the creation of a 4874 custom 4875 build of ACPICA that supports only the ACPI 5.0 reduced hardware (SoC) 4876 model. 4877 See the ACPICA reference for details. ACPICA BZ 942. This option removes 4878 about 4879 10% of the code and 5% of the static data, and the following hardware 4880 ACPI 4881 features become unavailable: 4882 PM Event and Control registers 4883 SCI interrupt (and handler) 4884 Fixed Events 4885 General Purpose Events (GPEs) 4886 Global Lock 4887 ACPI PM timer 4888 FACS table (Waking vectors and Global Lock) 4889 4890 Updated the unix tarball directory structure to match the ACPICA git 4891 source 4892 tree. This ensures that the generic unix makefiles work properly (in 4893 generate/unix). Also updated the Linux makefiles to match. ACPICA BZ 4894 867. 4895 4896 Updated the return value of the _REV predefined method to integer value 5 4897 to 4898 reflect ACPI 5.0 support. 4899 4900 Moved the external ACPI PM timer interface prototypes to the public 4901 acpixf.h 4902 file where they belong. 4903 4904 Example Code and Data Size: These are the sizes for the OS-independent 4905 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4906 debug 4907 version of the code includes the debug output trace mechanism and has a 4908 much 4909 larger code and data size. 4910 4911 Previous Release: 4912 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total 4913 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total 4914 Current Release: 4915 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total 4916 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 4917 4918 4919 2) iASL Compiler/Disassembler and Tools: 4920 4921 Disassembler: Fixed a problem with the new ACPI 5.0 serial resource 4922 descriptors (I2C, SPI, UART) where the resource produce/consumer bit was 4923 incorrectly displayed. 4924 4925 AcpiHelp: Add display of ACPI/PNP device IDs that are defined in the ACPI 4926 specification. 4927 4928 ---------------------------------------- 4929 11 January 2012. Summary of changes for version 20120111: 4930 4931 4932 1) ACPICA Core Subsystem: 4933 4934 Implemented a new mechanism to allow host device drivers to check for 4935 address 4936 range conflicts with ACPI Operation Regions. Both SystemMemory and 4937 SystemIO 4938 address spaces are supported. A new external interface, 4939 AcpiCheckAddressRange, 4940 allows drivers to check an address range against the ACPI namespace. See 4941 the 4942 ACPICA reference for additional details. Adds one new file, 4943 utilities/utaddress.c. Lin Ming, Bob Moore. 4944 4945 Fixed several issues with the ACPI 5.0 FADT support: Add the sleep 4946 Control 4947 and 4948 Status registers, update the ACPI 5.0 flags, and update internal data 4949 structures to handle an FADT larger than 256 bytes. The size of the ACPI 4950 5.0 4951 FADT is 268 bytes. 4952 4953 Updated all ACPICA copyrights and signons to 2012. Added the 2012 4954 copyright to 4955 all module headers and signons, including the standard Linux header. This 4956 affects virtually every file in the ACPICA core subsystem, iASL compiler, 4957 and 4958 all ACPICA utilities. 4959 4960 Example Code and Data Size: These are the sizes for the OS-independent 4961 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4962 debug 4963 version of the code includes the debug output trace mechanism and has a 4964 much 4965 larger code and data size. 4966 4967 Previous Release: 4968 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total 4969 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total 4970 Current Release: 4971 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total 4972 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total 4973 4974 4975 2) iASL Compiler/Disassembler and Tools: 4976 4977 Disassembler: fixed a problem with the automatic resource tag generation 4978 support. Fixes a problem where the resource tags are inadvertently not 4979 constructed if the table being disassembled contains external references 4980 to 4981 control methods. Moved the actual construction of the tags to after the 4982 final 4983 namespace is constructed (after 2nd parse is invoked due to external 4984 control 4985 method references.) ACPICA BZ 941. 4986 4987 Table Compiler: Make all "generic" operators caseless. These are the 4988 operators 4989 like UINT8, String, etc. Making these caseless improves ease-of-use. 4990 ACPICA BZ 4991 934. 4992 4993 ---------------------------------------- 4994 23 November 2011. Summary of changes for version 20111123: 4995 4996 0) ACPI 5.0 Support: 4997 4998 This release contains full support for the ACPI 5.0 specification, as 4999 summarized below. 5000 5001 Reduced Hardware Support: 5002 ------------------------- 5003 5004 This support allows for ACPI systems without the usual ACPI hardware. 5005 This 5006 support is enabled by a flag in the revision 5 FADT. If it is set, ACPICA 5007 will 5008 not attempt to initialize or use any of the usual ACPI hardware. Note, 5009 when 5010 this flag is set, all of the following ACPI hardware is assumed to be not 5011 present and is not initialized or accessed: 5012 5013 General Purpose Events (GPEs) 5014 Fixed Events (PM1a/PM1b and PM Control) 5015 Power Management Timer and Console Buttons (power/sleep) 5016 Real-time Clock Alarm 5017 Global Lock 5018 System Control Interrupt (SCI) 5019 The FACS is assumed to be non-existent 5020 5021 ACPI Tables: 5022 ------------ 5023 5024 All new tables and updates to existing tables are fully supported in the 5025 ACPICA headers (for use by device drivers), the disassembler, and the 5026 iASL 5027 Data Table Compiler. ACPI 5.0 defines these new tables: 5028 5029 BGRT /* Boot Graphics Resource Table */ 5030 DRTM /* Dynamic Root of Trust for Measurement table */ 5031 FPDT /* Firmware Performance Data Table */ 5032 GTDT /* Generic Timer Description Table */ 5033 MPST /* Memory Power State Table */ 5034 PCCT /* Platform Communications Channel Table */ 5035 PMTT /* Platform Memory Topology Table */ 5036 RASF /* RAS Feature table */ 5037 5038 Operation Regions/SpaceIDs: 5039 --------------------------- 5040 5041 All new operation regions are fully supported by the iASL compiler, the 5042 disassembler, and the ACPICA runtime code (for dispatch to region 5043 handlers.) 5044 The new operation region Space IDs are: 5045 5046 GeneralPurposeIo 5047 GenericSerialBus 5048 5049 Resource Descriptors: 5050 --------------------- 5051 5052 All new ASL resource descriptors are fully supported by the iASL 5053 compiler, 5054 the 5055 ASL/AML disassembler, and the ACPICA runtime Resource Manager code 5056 (including 5057 all new predefined resource tags). New descriptors are: 5058 5059 FixedDma 5060 GpioIo 5061 GpioInt 5062 I2cSerialBus 5063 SpiSerialBus 5064 UartSerialBus 5065 5066 ASL/AML Operators, New and Modified: 5067 ------------------------------------ 5068 5069 One new operator is added, the Connection operator, which is used to 5070 associate 5071 a GeneralPurposeIo or GenericSerialBus resource descriptor with 5072 individual 5073 field objects within an operation region. Several new protocols are 5074 associated 5075 with the AccessAs operator. All are fully supported by the iASL compiler, 5076 disassembler, and runtime ACPICA AML interpreter: 5077 5078 Connection // Declare Field Connection 5079 attributes 5080 AccessAs: AttribBytes (n) // Read/Write N-Bytes Protocol 5081 AccessAs: AttribRawBytes (n) // Raw Read/Write N-Bytes 5082 Protocol 5083 AccessAs: AttribRawProcessBytes (n) // Raw Process Call Protocol 5084 RawDataBuffer // Data type for Vendor Data 5085 fields 5086 5087 Predefined ASL/AML Objects: 5088 --------------------------- 5089 5090 All new predefined objects/control-methods are supported by the iASL 5091 compiler 5092 and the ACPICA runtime validation/repair (arguments and return values.) 5093 New 5094 predefined names include the following: 5095 5096 Standard Predefined Names (Objects or Control Methods): 5097 _AEI, _CLS, _CPC, _CWS, _DEP, 5098 _DLM, _EVT, _GCP, _CRT, _GWS, 5099 _HRV, _PRE, _PSE, _SRT, _SUB. 5100 5101 Resource Tags (Names used to access individual fields within resource 5102 descriptors): 5103 _DBT, _DPL, _DRS, _END, _FLC, 5104 _IOR, _LIN, _MOD, _PAR, _PHA, 5105 _PIN, _PPI, _POL, _RXL, _SLV, 5106 _SPE, _STB, _TXL, _VEN. 5107 5108 ACPICA External Interfaces: 5109 --------------------------- 5110 5111 Several new interfaces have been defined for use by ACPI-related device 5112 drivers and other host OS services: 5113 5114 AcpiAcquireMutex and AcpiReleaseMutex: These interfaces allow the host OS 5115 to 5116 acquire and release AML mutexes that are defined in the DSDT/SSDT tables 5117 provided by the BIOS. They are intended to be used in conjunction with 5118 the 5119 ACPI 5.0 _DLM (Device Lock Method) in order to provide transaction-level 5120 mutual exclusion with the AML code/interpreter. 5121 5122 AcpiGetEventResources: Returns the (formatted) resource descriptors as 5123 defined 5124 by the ACPI 5.0 _AEI object (ACPI Event Information). This object 5125 provides 5126 resource descriptors associated with hardware-reduced platform events, 5127 similar 5128 to the AcpiGetCurrentResources interface. 5129 5130 Operation Region Handlers: For General Purpose IO and Generic Serial Bus 5131 operation regions, information about the Connection() object and any 5132 optional 5133 length information is passed to the region handler within the Context 5134 parameter. 5135 5136 AcpiBufferToResource: This interface converts a raw AML buffer containing 5137 a 5138 resource template or resource descriptor to the ACPI_RESOURCE internal 5139 format 5140 suitable for use by device drivers. Can be used by an operation region 5141 handler 5142 to convert the Connection() buffer object into a ACPI_RESOURCE. 5143 5144 Miscellaneous/Tools/TestSuites: 5145 ------------------------------- 5146 5147 Support for extended _HID names (Four alpha characters instead of three). 5148 Support for ACPI 5.0 features in the AcpiExec and AcpiHelp utilities. 5149 Support for ACPI 5.0 features in the ASLTS test suite. 5150 Fully updated documentation (ACPICA and iASL reference documents.) 5151 5152 ACPI Table Definition Language: 5153 ------------------------------- 5154 5155 Support for this language was implemented and released as a subsystem of 5156 the 5157 iASL compiler in 2010. (See the iASL compiler User Guide.) 5158 5159 5160 Non-ACPI 5.0 changes for this release: 5161 -------------------------------------- 5162 5163 1) ACPICA Core Subsystem: 5164 5165 Fix a problem with operation region declarations where a failure can 5166 occur 5167 if 5168 the region name and an argument that evaluates to an object (such as the 5169 region address) are in different namespace scopes. Lin Ming, ACPICA BZ 5170 937. 5171 5172 Do not abort an ACPI table load if an invalid space ID is found within. 5173 This 5174 will be caught later if the offending method is executed. ACPICA BZ 925. 5175 5176 Fixed an issue with the FFixedHW space ID where the ID was not always 5177 recognized properly (Both ACPICA and iASL). ACPICA BZ 926. 5178 5179 Fixed a problem with the 32-bit generation of the unix-specific OSL 5180 (osunixxf.c). Lin Ming, ACPICA BZ 936. 5181 5182 Several changes made to enable generation with the GCC 4.6 compiler. 5183 ACPICA BZ 5184 935. 5185 5186 New error messages: Unsupported I/O requests (not 8/16/32 bit), and 5187 Index/Bank 5188 field registers out-of-range. 5189 5190 2) iASL Compiler/Disassembler and Tools: 5191 5192 iASL: Implemented the __PATH__ operator, which returns the full pathname 5193 of 5194 the current source file. 5195 5196 AcpiHelp: Automatically display expanded keyword information for all ASL 5197 operators. 5198 5199 Debugger: Add "Template" command to disassemble/dump resource template 5200 buffers. 5201 5202 Added a new master script to generate and execute the ASLTS test suite. 5203 Automatically handles 32- and 64-bit generation. See tests/aslts.sh 5204 5205 iASL: Fix problem with listing generation during processing of the 5206 Switch() 5207 operator where AML listing was disabled until the entire Switch block was 5208 completed. 5209 5210 iASL: Improve support for semicolon statement terminators. Fix "invalid 5211 character" message for some cases when the semicolon is used. Semicolons 5212 are 5213 now allowed after every <Term> grammar element. ACPICA BZ 927. 5214 5215 iASL: Fixed some possible aliasing warnings during generation. ACPICA BZ 5216 923. 5217 5218 Disassembler: Fix problem with disassembly of the DataTableRegion 5219 operator 5220 where an inadvertent "Unhandled deferred opcode" message could be 5221 generated. 5222 5223 3) Example Code and Data Size 5224 5225 These are the sizes for the OS-independent acpica.lib produced by the 5226 Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code 5227 includes the debug output trace mechanism and has a much larger code and 5228 data 5229 size. 5230 5231 Previous Release: 5232 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 5233 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 5234 Current Release: 5235 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total 5236 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total 5237 5238 ---------------------------------------- 5239 22 September 2011. Summary of changes for version 20110922: 5240 5241 0) ACPI 5.0 News: 5242 5243 Support for ACPI 5.0 in ACPICA has been underway for several months and 5244 will 5245 be released at the same time that ACPI 5.0 is officially released. 5246 5247 The ACPI 5.0 specification is on track for release in the next few 5248 months. 5249 5250 1) ACPICA Core Subsystem: 5251 5252 Fixed a problem where the maximum sleep time for the Sleep() operator was 5253 intended to be limited to two seconds, but was inadvertently limited to 5254 20 5255 seconds instead. 5256 5257 Linux and Unix makefiles: Added header file dependencies to ensure 5258 correct 5259 generation of ACPICA core code and utilities. Also simplified the 5260 makefiles 5261 considerably through the use of the vpath variable to specify search 5262 paths. 5263 ACPICA BZ 924. 5264 5265 2) iASL Compiler/Disassembler and Tools: 5266 5267 iASL: Implemented support to check the access length for all fields 5268 created to 5269 access named Resource Descriptor fields. For example, if a resource field 5270 is 5271 defined to be two bits, a warning is issued if a CreateXxxxField() is 5272 used 5273 with an incorrect bit length. This is implemented for all current 5274 resource 5275 descriptor names. ACPICA BZ 930. 5276 5277 Disassembler: Fixed a byte ordering problem with the output of 24-bit and 5278 56- 5279 bit integers. 5280 5281 iASL: Fixed a couple of issues associated with variable-length package 5282 objects. 1) properly handle constants like One, Ones, Zero -- do not make 5283 a 5284 VAR_PACKAGE when these are used as a package length. 2) Allow the 5285 VAR_PACKAGE 5286 opcode (in addition to PACKAGE) when validating object types for 5287 predefined 5288 names. 5289 5290 iASL: Emit statistics for all output files (instead of just the ASL input 5291 and 5292 AML output). Includes listings, hex files, etc. 5293 5294 iASL: Added -G option to the table compiler to allow the compilation of 5295 custom 5296 ACPI tables. The only part of a table that is required is the standard 5297 36- 5298 byte 5299 ACPI header. 5300 5301 AcpiXtract: Ported to the standard ACPICA environment (with ACPICA 5302 headers), 5303 which also adds correct 64-bit support. Also, now all output filenames 5304 are 5305 completely lower case. 5306 5307 AcpiExec: Ignore any non-AML tables (tables other than DSDT or SSDT) when 5308 loading table files. A warning is issued for any such tables. The only 5309 exception is an FADT. This also fixes a possible fault when attempting to 5310 load 5311 non-AML tables. ACPICA BZ 932. 5312 5313 AcpiHelp: Added the AccessAs and Offset operators. Fixed a problem where 5314 a 5315 missing table terminator could cause a fault when using the -p option. 5316 5317 AcpiSrc: Fixed a possible divide-by-zero fault when generating file 5318 statistics. 5319 5320 3) Example Code and Data Size 5321 5322 These are the sizes for the OS-independent acpica.lib produced by the 5323 Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code 5324 includes the debug output trace mechanism and has a much larger code and 5325 data 5326 size. 5327 5328 Previous Release (VC 9.0): 5329 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 5330 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 5331 Current Release (VC 9.0): 5332 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 5333 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 5334 5335 5336 ---------------------------------------- 5337 23 June 2011. Summary of changes for version 20110623: 5338 5339 1) ACPI CA Core Subsystem: 5340 5341 Updated the predefined name repair mechanism to not attempt repair of a 5342 _TSS 5343 return object if a _PSS object is present. We can only sort the _TSS 5344 return 5345 package if there is no _PSS within the same scope. This is because if 5346 _PSS 5347 is 5348 present, the ACPI specification dictates that the _TSS Power Dissipation 5349 field 5350 is to be ignored, and therefore some BIOSs leave garbage values in the 5351 _TSS 5352 Power field(s). In this case, it is best to just return the _TSS package 5353 as- 5354 is. Reported by, and fixed with assistance from Fenghua Yu. 5355 5356 Added an option to globally disable the control method return value 5357 validation 5358 and repair. This runtime option can be used to disable return value 5359 repair 5360 if 5361 this is causing a problem on a particular machine. Also added an option 5362 to 5363 AcpiExec (-dr) to set this disable flag. 5364 5365 All makefiles and project files: Major changes to improve generation of 5366 ACPICA 5367 tools. ACPICA BZ 912: 5368 Reduce default optimization levels to improve compatibility 5369 For Linux, add strict-aliasing=0 for gcc 4 5370 Cleanup and simplify use of command line defines 5371 Cleanup multithread library support 5372 Improve usage messages 5373 5374 Linux-specific header: update handling of THREAD_ID and pthread. For the 5375 32- 5376 bit case, improve casting to eliminate possible warnings, especially with 5377 the 5378 acpica tools. 5379 5380 Example Code and Data Size: These are the sizes for the OS-independent 5381 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 5382 debug 5383 version of the code includes the debug output trace mechanism and has a 5384 much 5385 larger code and data size. 5386 5387 Previous Release (VC 9.0): 5388 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total 5389 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 5390 Current Release (VC 9.0): 5391 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 5392 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 5393 5394 2) iASL Compiler/Disassembler and Tools: 5395 5396 With this release, a new utility named "acpihelp" has been added to the 5397 ACPICA 5398 package. This utility summarizes the ACPI specification chapters for the 5399 ASL 5400 and AML languages. It generates under Linux/Unix as well as Windows, and 5401 provides the following functionality: 5402 Find/display ASL operator(s) -- with description and syntax. 5403 Find/display ASL keyword(s) -- with exact spelling and descriptions. 5404 Find/display ACPI predefined name(s) -- with description, number 5405 of arguments, and the return value data type. 5406 Find/display AML opcode name(s) -- with opcode, arguments, and 5407 grammar. 5408 Decode/display AML opcode -- with opcode name, arguments, and 5409 grammar. 5410 5411 Service Layers: Make multi-thread support configurable. Conditionally 5412 compile 5413 the multi-thread support so that threading libraries will not be linked 5414 if 5415 not 5416 necessary. The only tool that requires multi-thread support is AcpiExec. 5417 5418 iASL: Update yyerrror/AslCompilerError for "const" errors. Newer versions 5419 of 5420 Bison appear to want the interface to yyerror to be a const char * (or at 5421 least this is a problem when generating iASL on some systems.) ACPICA BZ 5422 923 5423 Pierre Lejeune. 5424 5425 Tools: Fix for systems where O_BINARY is not defined. Only used for 5426 Windows 5427 versions of the tools. 5428 5429 ---------------------------------------- 5430 27 May 2011. Summary of changes for version 20110527: 5431 5432 1) ACPI CA Core Subsystem: 5433 5434 ASL Load() operator: Reinstate most restrictions on the incoming ACPI 5435 table 5436 signature. Now, only allow SSDT, OEMx, and a null signature. History: 5437 1) Originally, we checked the table signature for "SSDT" or "PSDT". 5438 (PSDT is now obsolete.) 5439 2) We added support for OEMx tables, signature "OEM" plus a fourth 5440 "don't care" character. 5441 3) Valid tables were encountered with a null signature, so we just 5442 gave up on validating the signature, (05/2008). 5443 4) We encountered non-AML tables such as the MADT, which caused 5444 interpreter errors and kernel faults. So now, we once again allow 5445 only SSDT, OEMx, and now, also a null signature. (05/2011). 5446 5447 Added the missing _TDL predefined name to the global name list in order 5448 to 5449 enable validation. Affects both the core ACPICA code and the iASL 5450 compiler. 5451 5452 Example Code and Data Size: These are the sizes for the OS-independent 5453 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 5454 debug 5455 version of the code includes the debug output trace mechanism and has a 5456 much 5457 larger code and data size. 5458 5459 Previous Release (VC 9.0): 5460 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total 5461 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total 5462 Current Release (VC 9.0): 5463 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total 5464 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 5465 5466 2) iASL Compiler/Disassembler and Tools: 5467 5468 Debugger/AcpiExec: Implemented support for "complex" method arguments on 5469 the 5470 debugger command line. This adds support beyond simple integers -- 5471 including 5472 Strings, Buffers, and Packages. Includes support for nested packages. 5473 Increased the default command line buffer size to accommodate these 5474 arguments. 5475 See the ACPICA reference for details and syntax. ACPICA BZ 917. 5476 5477 Debugger/AcpiExec: Implemented support for "default" method arguments for 5478 the 5479 Execute/Debug command. Now, the debugger will always invoke a control 5480 method 5481 with the required number of arguments -- even if the command line 5482 specifies 5483 none or insufficient arguments. It uses default integer values for any 5484 missing 5485 arguments. Also fixes a bug where only six method arguments maximum were 5486 supported instead of the required seven. 5487 5488 Debugger/AcpiExec: Add a maximum buffer length parameter to AcpiOsGetLine 5489 and 5490 also return status in order to prevent buffer overruns. See the ACPICA 5491 reference for details and syntax. ACPICA BZ 921 5492 5493 iASL: Cleaned up support for Berkeley yacc. A general cleanup of code and 5494 makefiles to simplify support for the two different but similar parser 5495 generators, bison and yacc. 5496 5497 Updated the generic unix makefile for gcc 4. The default gcc version is 5498 now 5499 expected to be 4 or greater, since options specific to gcc 4 are used. 5500 5501 ---------------------------------------- 5502 13 April 2011. Summary of changes for version 20110413: 5503 5504 1) ACPI CA Core Subsystem: 5505 5506 Implemented support to execute a so-called "orphan" _REG method under the 5507 EC 5508 device. This change will force the execution of a _REG method underneath 5509 the 5510 EC 5511 device even if there is no corresponding operation region of type 5512 EmbeddedControl. Fixes a problem seen on some machines and apparently is 5513 compatible with Windows behavior. ACPICA BZ 875. 5514 5515 Added more predefined methods that are eligible for automatic NULL 5516 package 5517 element removal. This change adds another group of predefined names to 5518 the 5519 list 5520 of names that can be repaired by having NULL package elements dynamically 5521 removed. This group are those methods that return a single variable- 5522 length 5523 package containing simple data types such as integers, buffers, strings. 5524 This 5525 includes: _ALx, _BCL, _CID,_ DOD, _EDL, _FIX, _PCL, _PLD, _PMD, _PRx, 5526 _PSL, 5527 _Sx, 5528 and _TZD. ACPICA BZ 914. 5529 5530 Split and segregated all internal global lock functions to a new file, 5531 evglock.c. 5532 5533 Updated internal address SpaceID for DataTable regions. Moved this 5534 internal 5535 space 5536 id in preparation for ACPI 5.0 changes that will include some new space 5537 IDs. 5538 This 5539 change should not affect user/host code. 5540 5541 Example Code and Data Size: These are the sizes for the OS-independent 5542 acpica.lib 5543 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug 5544 version of 5545 the code includes the debug output trace mechanism and has a much larger 5546 code 5547 and 5548 data size. 5549 5550 Previous Release (VC 9.0): 5551 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total 5552 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total 5553 Current Release (VC 9.0): 5554 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total 5555 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total 5556 5557 2) iASL Compiler/Disassembler and Tools: 5558 5559 iASL/DTC: Major update for new grammar features. Allow generic data types 5560 in 5561 custom ACPI tables. Field names are now optional. Any line can be split 5562 to 5563 multiple lines using the continuation char (\). Large buffers now use 5564 line- 5565 continuation character(s) and no colon on the continuation lines. See the 5566 grammar 5567 update in the iASL compiler reference. ACPI BZ 910,911. Lin Ming, Bob 5568 Moore. 5569 5570 iASL: Mark ASL "Return()" and the simple "Return" as "Null" return 5571 statements. 5572 Since the parser stuffs a "zero" as the return value for these statements 5573 (due 5574 to 5575 the underlying AML grammar), they were seen as "return with value" by the 5576 iASL 5577 semantic checking. They are now seen correctly as "null" return 5578 statements. 5579 5580 iASL: Check if a_REG declaration has a corresponding Operation Region. 5581 Adds a 5582 check for each _REG to ensure that there is in fact a corresponding 5583 operation 5584 region declaration in the same scope. If not, the _REG method is not very 5585 useful 5586 since it probably won't be executed. ACPICA BZ 915. 5587 5588 iASL/DTC: Finish support for expression evaluation. Added a new 5589 expression 5590 parser 5591 that implements c-style operator precedence and parenthesization. ACPICA 5592 bugzilla 5593 908. 5594 5595 Disassembler/DTC: Remove support for () and <> style comments in data 5596 tables. 5597 Now 5598 that DTC has full expression support, we don't want to have comment 5599 strings 5600 that 5601 start with a parentheses or a less-than symbol. Now, only the standard /* 5602 and 5603 // 5604 comments are supported, as well as the bracket [] comments. 5605 5606 AcpiXtract: Fix for RSDP and dynamic SSDT extraction. These tables have 5607 "unusual" 5608 headers in the acpidump file. Update the header validation to support 5609 these 5610 tables. Problem introduced in previous AcpiXtract version in the change 5611 to 5612 support "wrong checksum" error messages emitted by acpidump utility. 5613 5614 iASL: Add a * option to generate all template files (as a synonym for 5615 ALL) 5616 as 5617 in 5618 "iasl -T *" or "iasl -T ALL". 5619 5620 iASL/DTC: Do not abort compiler on fatal errors. We do not want to 5621 completely 5622 abort the compiler on "fatal" errors, simply should abort the current 5623 compile. 5624 This allows multiple compiles with a single (possibly wildcard) compiler 5625 invocation. 5626 5627 ---------------------------------------- 5628 16 March 2011. Summary of changes for version 20110316: 5629 5630 1) ACPI CA Core Subsystem: 5631 5632 Fixed a problem caused by a _PRW method appearing at the namespace root 5633 scope 5634 during the setup of wake GPEs. A fault could occur if a _PRW directly 5635 under 5636 the 5637 root object was passed to the AcpiSetupGpeForWake interface. Lin Ming. 5638 5639 Implemented support for "spurious" Global Lock interrupts. On some 5640 systems, a 5641 global lock interrupt can occur without the pending flag being set. Upon 5642 a 5643 GL 5644 interrupt, we now ensure that a thread is actually waiting for the lock 5645 before 5646 signaling GL availability. Rafael Wysocki, Bob Moore. 5647 5648 Example Code and Data Size: These are the sizes for the OS-independent 5649 acpica.lib 5650 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug 5651 version of 5652 the code includes the debug output trace mechanism and has a much larger 5653 code 5654 and 5655 data size. 5656 5657 Previous Release (VC 9.0): 5658 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 5659 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 5660 Current Release (VC 9.0): 5661 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total 5662 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total 5663 5664 2) iASL Compiler/Disassembler and Tools: 5665 5666 Implemented full support for the "SLIC" ACPI table. Includes support in 5667 the 5668 header files, disassembler, table compiler, and template generator. Bob 5669 Moore, 5670 Lin Ming. 5671 5672 AcpiXtract: Correctly handle embedded comments and messages from 5673 AcpiDump. 5674 Apparently some or all versions of acpidump will occasionally emit a 5675 comment 5676 like 5677 "Wrong checksum", etc., into the dump file. This was causing problems for 5678 AcpiXtract. ACPICA BZ 905. 5679 5680 iASL: Fix the Linux makefile by removing an inadvertent double file 5681 inclusion. 5682 ACPICA BZ 913. 5683 5684 AcpiExec: Update installation of operation region handlers. Install one 5685 handler 5686 for a user-defined address space. This is used by the ASL test suite 5687 (ASLTS). 5688 5689 ---------------------------------------- 5690 11 February 2011. Summary of changes for version 20110211: 5691 5692 1) ACPI CA Core Subsystem: 5693 5694 Added a mechanism to defer _REG methods for some early-installed 5695 handlers. 5696 Most user handlers should be installed before call to 5697 AcpiEnableSubsystem. 5698 However, Event handlers and region handlers should be installed after 5699 AcpiInitializeObjects. Override handlers for the "default" regions should 5700 be 5701 installed early, however. This change executes all _REG methods for the 5702 default regions (Memory/IO/PCI/DataTable) simultaneously to prevent any 5703 chicken/egg issues between them. ACPICA BZ 848. 5704 5705 Implemented an optimization for GPE detection. This optimization will 5706 simply 5707 ignore GPE registers that contain no enabled GPEs -- there is no need to 5708 read the register since this information is available internally. This 5709 becomes more important on machines with a large GPE space. ACPICA 5710 bugzilla 5711 884. Lin Ming. Suggestion from Joe Liu. 5712 5713 Removed all use of the highly unreliable FADT revision field. The 5714 revision 5715 number in the FADT has been found to be completely unreliable and cannot 5716 be 5717 trusted. Only the actual table length can be used to infer the version. 5718 This 5719 change updates the ACPICA core and the disassembler so that both no 5720 longer 5721 even look at the FADT version and instead depend solely upon the FADT 5722 length. 5723 5724 Fix an unresolved name issue for the no-debug and no-error-message source 5725 generation cases. The _AcpiModuleName was left undefined in these cases, 5726 but 5727 it is actually needed as a parameter to some interfaces. Define 5728 _AcpiModuleName as a null string in these cases. ACPICA Bugzilla 888. 5729 5730 Split several large files (makefiles and project files updated) 5731 utglobal.c -> utdecode.c 5732 dbcomds.c -> dbmethod.c dbnames.c 5733 dsopcode.c -> dsargs.c dscontrol.c 5734 dsload.c -> dsload2.c 5735 aslanalyze.c -> aslbtypes.c aslwalks.c 5736 5737 Example Code and Data Size: These are the sizes for the OS-independent 5738 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 5739 debug version of the code includes the debug output trace mechanism and 5740 has 5741 a much larger code and data size. 5742 5743 Previous Release (VC 9.0): 5744 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 5745 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 5746 Current Release (VC 9.0): 5747 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 5748 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 5749 5750 2) iASL Compiler/Disassembler and Tools: 5751 5752 iASL: Implemented the predefined macros __LINE__, __FILE__, and __DATE__. 5753 These are useful C-style macros with the standard definitions. ACPICA 5754 bugzilla 898. 5755 5756 iASL/DTC: Added support for integer expressions and labels. Support for 5757 full 5758 expressions for all integer fields in all ACPI tables. Support for labels 5759 in 5760 "generic" portions of tables such as UEFI. See the iASL reference manual. 5761 5762 Debugger: Added a command to display the status of global handlers. The 5763 "handlers" command will display op region, fixed event, and miscellaneous 5764 global handlers. installation status -- and for op regions, whether 5765 default 5766 or user-installed handler will be used. 5767 5768 iASL: Warn if reserved method incorrectly returns a value. Many 5769 predefined 5770 names are defined such that they do not return a value. If implemented as 5771 a 5772 method, issue a warning if such a name explicitly returns a value. ACPICA 5773 Bugzilla 855. 5774 5775 iASL: Added detection of GPE method name conflicts. Detects a conflict 5776 where 5777 there are two GPE methods of the form _Lxy and _Exy in the same scope. 5778 (For 5779 example, _L1D and _E1D in the same scope.) ACPICA bugzilla 848. 5780 5781 iASL/DTC: Fixed a couple input scanner issues with comments and line 5782 numbers. Comment remover could get confused and miss a comment ending. 5783 Fixed 5784 a problem with line counter maintenance. 5785 5786 iASL/DTC: Reduced the severity of some errors from fatal to error. There 5787 is 5788 no need to abort on simple errors within a field definition. 5789 5790 Debugger: Simplified the output of the help command. All help output now 5791 in 5792 a single screen, instead of help subcommands. ACPICA Bugzilla 897. 5793 5794 ---------------------------------------- 5795 12 January 2011. Summary of changes for version 20110112: 5796 5797 1) ACPI CA Core Subsystem: 5798 5799 Fixed a race condition between method execution and namespace walks that 5800 can 5801 possibly cause a fault. The problem was apparently introduced in version 5802 20100528 as a result of a performance optimization that reduces the 5803 number 5804 of 5805 namespace walks upon method exit by using the delete_namespace_subtree 5806 function instead of the delete_namespace_by_owner function used 5807 previously. 5808 Bug is a missing namespace lock in the delete_namespace_subtree function. 5809 dana.myers (a] oracle.com 5810 5811 Fixed several issues and a possible fault with the automatic "serialized" 5812 method support. History: This support changes a method to "serialized" on 5813 the 5814 fly if the method generates an AE_ALREADY_EXISTS error, indicating the 5815 possibility that it cannot handle reentrancy. This fix repairs a couple 5816 of 5817 issues seen in the field, especially on machines with many cores: 5818 5819 1) Delete method children only upon the exit of the last thread, 5820 so as to not delete objects out from under other running threads 5821 (and possibly causing a fault.) 5822 2) Set the "serialized" bit for the method only upon the exit of the 5823 Last thread, so as to not cause deadlock when running threads 5824 attempt to exit. 5825 3) Cleanup the use of the AML "MethodFlags" and internal method flags 5826 so that there is no longer any confusion between the two. 5827 5828 Lin Ming, Bob Moore. Reported by dana.myers (a] oracle.com. 5829 5830 Debugger: Now lock the namespace for duration of a namespace dump. 5831 Prevents 5832 issues if the namespace is changing dynamically underneath the debugger. 5833 Especially affects temporary namespace nodes, since the debugger displays 5834 these also. 5835 5836 Updated the ordering of include files. The ACPICA headers should appear 5837 before any compiler-specific headers (stdio.h, etc.) so that acenv.h can 5838 set 5839 any necessary compiler-specific defines, etc. Affects the ACPI-related 5840 tools 5841 and utilities. 5842 5843 Updated all ACPICA copyrights and signons to 2011. Added the 2011 5844 copyright 5845 to all module headers and signons, including the Linux header. This 5846 affects 5847 virtually every file in the ACPICA core subsystem, iASL compiler, and all 5848 utilities. 5849 5850 Added project files for MS Visual Studio 2008 (VC++ 9.0). The original 5851 project files for VC++ 6.0 are now obsolete. New project files can be 5852 found 5853 under acpica/generate/msvc9. See acpica/generate/msvc9/readme.txt for 5854 details. 5855 5856 Example Code and Data Size: These are the sizes for the OS-independent 5857 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 5858 debug version of the code includes the debug output trace mechanism and 5859 has a 5860 much larger code and data size. 5861 5862 Previous Release (VC 6.0): 5863 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total 5864 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total 5865 Current Release (VC 9.0): 5866 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 5867 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 5868 5869 2) iASL Compiler/Disassembler and Tools: 5870 5871 iASL: Added generic data types to the Data Table compiler. Add "generic" 5872 data 5873 types such as UINT32, String, Unicode, etc., to simplify the generation 5874 of 5875 platform-defined tables such as UEFI. Lin Ming. 5876 5877 iASL: Added listing support for the Data Table Compiler. Adds listing 5878 support 5879 (-l) to display actual binary output for each line of input code. 5880 5881 ---------------------------------------- 5882 09 December 2010. Summary of changes for version 20101209: 5883 5884 1) ACPI CA Core Subsystem: 5885 5886 Completed the major overhaul of the GPE support code that was begun in 5887 July 5888 2010. Major features include: removal of _PRW execution in ACPICA (host 5889 executes _PRWs anyway), cleanup of "wake" GPE interfaces and processing, 5890 changes to existing interfaces, simplification of GPE handler operation, 5891 and 5892 a handful of new interfaces: 5893 5894 AcpiUpdateAllGpes 5895 AcpiFinishGpe 5896 AcpiSetupGpeForWake 5897 AcpiSetGpeWakeMask 5898 One new file, evxfgpe.c to consolidate all external GPE interfaces. 5899 5900 See the ACPICA Programmer Reference for full details and programming 5901 information. See the new section 4.4 "General Purpose Event (GPE) 5902 Support" 5903 for a full overview, and section 8.7 "ACPI General Purpose Event 5904 Management" 5905 for programming details. ACPICA BZ 858,870,877. Matthew Garrett, Lin 5906 Ming, 5907 Bob Moore, Rafael Wysocki. 5908 5909 Implemented a new GPE feature for Windows compatibility, the "Implicit 5910 Wake 5911 GPE Notify". This feature will automatically issue a Notify(2) on a 5912 device 5913 when a Wake GPE is received if there is no corresponding GPE method or 5914 handler. ACPICA BZ 870. 5915 5916 Fixed a problem with the Scope() operator during table parse and load 5917 phase. 5918 During load phase (table load or method execution), the scope operator 5919 should 5920 not enter the target into the namespace. Instead, it should open a new 5921 scope 5922 at the target location. Linux BZ 19462, ACPICA BZ 882. 5923 5924 Example Code and Data Size: These are the sizes for the OS-independent 5925 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5926 debug version of the code includes the debug output trace mechanism and 5927 has a 5928 much larger code and data size. 5929 5930 Previous Release: 5931 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total 5932 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total 5933 Current Release: 5934 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 5935 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 5936 5937 2) iASL Compiler/Disassembler and Tools: 5938 5939 iASL: Relax the alphanumeric restriction on _CID strings. These strings 5940 are 5941 "bus-specific" per the ACPI specification, and therefore any characters 5942 are 5943 acceptable. The only checks that can be performed are for a null string 5944 and 5945 perhaps for a leading asterisk. ACPICA BZ 886. 5946 5947 iASL: Fixed a problem where a syntax error that caused a premature EOF 5948 condition on the source file emitted a very confusing error message. The 5949 premature EOF is now detected correctly. ACPICA BZ 891. 5950 5951 Disassembler: Decode the AccessSize within a Generic Address Structure 5952 (byte 5953 access, word access, etc.) Note, this field does not allow arbitrary bit 5954 access, the size is encoded as 1=byte, 2=word, 3=dword, and 4=qword. 5955 5956 New: AcpiNames utility - Example namespace dump utility. Shows an example 5957 of 5958 ACPICA configuration for a minimal namespace dump utility. Uses table and 5959 namespace managers, but no AML interpreter. Does not add any 5960 functionality 5961 over AcpiExec, it is a subset of AcpiExec. The purpose is to show how to 5962 partition and configure ACPICA. ACPICA BZ 883. 5963 5964 AML Debugger: Increased the debugger buffer size for method return 5965 objects. 5966 Was 4K, increased to 16K. Also enhanced error messages for debugger 5967 method 5968 execution, including the buffer overflow case. 5969 5970 ---------------------------------------- 5971 13 October 2010. Summary of changes for version 20101013: 5972 5973 1) ACPI CA Core Subsystem: 5974 5975 Added support to clear the PCIEXP_WAKE event. When clearing ACPI events, 5976 now 5977 clear the PCIEXP_WAKE_STS bit in the ACPI PM1 Status Register, via 5978 HwClearAcpiStatus. Original change from Colin King. ACPICA BZ 880. 5979 5980 Changed the type of the predefined namespace object _TZ from ThermalZone 5981 to 5982 Device. This was found to be confusing to the host software that 5983 processes 5984 the various thermal zones, since _TZ is not really a ThermalZone. 5985 However, 5986 a 5987 Notify() can still be performed on it. ACPICA BZ 876. Suggestion from Rui 5988 Zhang. 5989 5990 Added Windows Vista SP2 to the list of supported _OSI strings. The actual 5991 string is "Windows 2006 SP2". 5992 5993 Eliminated duplicate code in AcpiUtExecute* functions. Now that the 5994 nsrepair 5995 code automatically repairs _HID-related strings, this type of code is no 5996 longer needed in Execute_HID, Execute_CID, and Execute_UID. ACPICA BZ 5997 878. 5998 5999 Example Code and Data Size: These are the sizes for the OS-independent 6000 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6001 debug version of the code includes the debug output trace mechanism and 6002 has a 6003 much larger code and data size. 6004 6005 Previous Release: 6006 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 6007 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 6008 Current Release: 6009 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 6010 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 6011 6012 2) iASL Compiler/Disassembler and Tools: 6013 6014 iASL: Implemented additional compile-time validation for _HID strings. 6015 The 6016 non-hex prefix (such as "PNP" or "ACPI") must be uppercase, and the 6017 length 6018 of 6019 the string must be exactly seven or eight characters. For both _HID and 6020 _CID 6021 strings, all characters must be alphanumeric. ACPICA BZ 874. 6022 6023 iASL: Allow certain "null" resource descriptors. Some BIOS code creates 6024 descriptors that are mostly or all zeros, with the expectation that they 6025 will 6026 be filled in at runtime. iASL now allows this as long as there is a 6027 "resource 6028 tag" (name) associated with the descriptor, which gives the ASL a handle 6029 needed to modify the descriptor. ACPICA BZ 873. 6030 6031 Added single-thread support to the generic Unix application OSL. 6032 Primarily 6033 for iASL support, this change removes the use of semaphores in the 6034 single- 6035 threaded ACPICA tools/applications - increasing performance. The 6036 _MULTI_THREADED option was replaced by the (reverse) ACPI_SINGLE_THREADED 6037 option. ACPICA BZ 879. 6038 6039 AcpiExec: several fixes for the 64-bit version. Adds XSDT support and 6040 support 6041 for 64-bit DSDT/FACS addresses in the FADT. Lin Ming. 6042 6043 iASL: Moved all compiler messages to a new file, aslmessages.h. 6044 6045 ---------------------------------------- 6046 15 September 2010. Summary of changes for version 20100915: 6047 6048 1) ACPI CA Core Subsystem: 6049 6050 Removed the AcpiOsDerivePciId OSL interface. The various host 6051 implementations 6052 of this function were not OS-dependent and are now obsolete and can be 6053 removed from all host OSLs. This function has been replaced by 6054 AcpiHwDerivePciId, which is now part of the ACPICA core code. 6055 AcpiHwDerivePciId has been implemented without recursion. Adds one new 6056 module, hwpci.c. ACPICA BZ 857. 6057 6058 Implemented a dynamic repair for _HID and _CID strings. The following 6059 problems are now repaired at runtime: 1) Remove a leading asterisk in the 6060 string, and 2) the entire string is uppercased. Both repairs are in 6061 accordance with the ACPI specification and will simplify host driver 6062 code. 6063 ACPICA BZ 871. 6064 6065 The ACPI_THREAD_ID type is no longer configurable, internally it is now 6066 always UINT64. This simplifies the ACPICA code, especially any printf 6067 output. 6068 UINT64 is the only common data type for all thread_id types across all 6069 operating systems. It is now up to the host OSL to cast the native 6070 thread_id 6071 type to UINT64 before returning the value to ACPICA (via 6072 AcpiOsGetThreadId). 6073 Lin Ming, Bob Moore. 6074 6075 Added the ACPI_INLINE type to enhance the ACPICA configuration. The 6076 "inline" 6077 keyword is not standard across compilers, and this type allows inline to 6078 be 6079 configured on a per-compiler basis. Lin Ming. 6080 6081 Made the system global AcpiGbl_SystemAwakeAndRunning publically 6082 available. 6083 Added an extern for this boolean in acpixf.h. Some hosts utilize this 6084 value 6085 during suspend/restore operations. ACPICA BZ 869. 6086 6087 All code that implements error/warning messages with the "ACPI:" prefix 6088 has 6089 been moved to a new module, utxferror.c. 6090 6091 The UINT64_OVERLAY was moved to utmath.c, which is the only module where 6092 it 6093 is used. ACPICA BZ 829. Lin Ming, Bob Moore. 6094 6095 Example Code and Data Size: These are the sizes for the OS-independent 6096 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6097 debug version of the code includes the debug output trace mechanism and 6098 has a 6099 much larger code and data size. 6100 6101 Previous Release: 6102 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total 6103 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total 6104 Current Release: 6105 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 6106 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 6107 6108 2) iASL Compiler/Disassembler and Tools: 6109 6110 iASL/Disassembler: Write ACPI errors to stderr instead of the output 6111 file. 6112 This keeps the output files free of random error messages that may 6113 originate 6114 from within the namespace/interpreter code. Used this opportunity to 6115 merge 6116 all ACPI:-style messages into a single new module, utxferror.c. ACPICA BZ 6117 866. Lin Ming, Bob Moore. 6118 6119 Tools: update some printfs for ansi warnings on size_t. Handle width 6120 change 6121 of size_t on 32-bit versus 64-bit generations. Lin Ming. 6122 6123 ---------------------------------------- 6124 06 August 2010. Summary of changes for version 20100806: 6125 6126 1) ACPI CA Core Subsystem: 6127 6128 Designed and implemented a new host interface to the _OSI support code. 6129 This 6130 will allow the host to dynamically add or remove multiple _OSI strings, 6131 as 6132 well as install an optional handler that is called for each _OSI 6133 invocation. 6134 Also added a new AML debugger command, 'osi' to display and modify the 6135 global 6136 _OSI string table, and test support in the AcpiExec utility. See the 6137 ACPICA 6138 reference manual for full details. Lin Ming, Bob Moore. ACPICA BZ 836. 6139 New Functions: 6140 AcpiInstallInterface - Add an _OSI string. 6141 AcpiRemoveInterface - Delete an _OSI string. 6142 AcpiInstallInterfaceHandler - Install optional _OSI handler. 6143 Obsolete Functions: 6144 AcpiOsValidateInterface - no longer used. 6145 New Files: 6146 source/components/utilities/utosi.c 6147 6148 Re-introduced the support to enable multi-byte transfers for Embedded 6149 Controller (EC) operation regions. A reported problem was found to be a 6150 bug 6151 in the host OS, not in the multi-byte support. Previously, the maximum 6152 data 6153 size passed to the EC operation region handler was a single byte. There 6154 are 6155 often EC Fields larger than one byte that need to be transferred, and it 6156 is 6157 useful for the EC driver to lock these as a single transaction. This 6158 change 6159 enables single transfers larger than 8 bits. This effectively changes the 6160 access to the EC space from ByteAcc to AnyAcc, and will probably require 6161 changes to the host OS Embedded Controller driver to enable 16/32/64/256- 6162 bit 6163 transfers in addition to 8-bit transfers. Alexey Starikovskiy, Lin Ming. 6164 6165 Fixed a problem with the prototype for AcpiOsReadPciConfiguration. The 6166 prototype in acpiosxf.h had the output value pointer as a (void *). 6167 It should be a (UINT64 *). This may affect some host OSL code. 6168 6169 Fixed a couple problems with the recently modified Linux makefiles for 6170 iASL 6171 and AcpiExec. These new makefiles place the generated object files in the 6172 local directory so that there can be no collisions between the files that 6173 are 6174 shared between them that are compiled with different options. 6175 6176 Example Code and Data Size: These are the sizes for the OS-independent 6177 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6178 debug version of the code includes the debug output trace mechanism and 6179 has a 6180 much larger code and data size. 6181 6182 Previous Release: 6183 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 6184 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total 6185 Current Release: 6186 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total 6187 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total 6188 6189 2) iASL Compiler/Disassembler and Tools: 6190 6191 iASL/Disassembler: Added a new option (-da, "disassemble all") to load 6192 the 6193 namespace from and disassemble an entire group of AML files. Useful for 6194 loading all of the AML tables for a given machine (DSDT, SSDT1...SSDTn) 6195 and 6196 disassembling with one simple command. ACPICA BZ 865. Lin Ming. 6197 6198 iASL: Allow multiple invocations of -e option. This change allows 6199 multiple 6200 uses of -e on the command line: "-e ssdt1.dat -e ssdt2.dat". ACPICA BZ 6201 834. 6202 Lin Ming. 6203 6204 ---------------------------------------- 6205 02 July 2010. Summary of changes for version 20100702: 6206 6207 1) ACPI CA Core Subsystem: 6208 6209 Implemented several updates to the recently added GPE reference count 6210 support. The model for "wake" GPEs is changing to give the host OS 6211 complete 6212 control of these GPEs. Eventually, the ACPICA core will not execute any 6213 _PRW 6214 methods, since the host already must execute them. Also, additional 6215 changes 6216 were made to help ensure that the reference counts are kept in proper 6217 synchronization with reality. Rafael J. Wysocki. 6218 6219 1) Ensure that GPEs are not enabled twice during initialization. 6220 2) Ensure that GPE enable masks stay in sync with the reference count. 6221 3) Do not inadvertently enable GPEs when writing GPE registers. 6222 4) Remove the internal wake reference counter and add new AcpiGpeWakeup 6223 interface. This interface will set or clear individual GPEs for wakeup. 6224 5) Remove GpeType argument from AcpiEnable and AcpiDisable. These 6225 interfaces 6226 are now used for "runtime" GPEs only. 6227 6228 Changed the behavior of the GPE install/remove handler interfaces. The 6229 GPE 6230 is 6231 no longer disabled during this process, as it was found to cause problems 6232 on 6233 some machines. Rafael J. Wysocki. 6234 6235 Reverted a change introduced in version 20100528 to enable Embedded 6236 Controller multi-byte transfers. This change was found to cause problems 6237 with 6238 Index Fields and possibly Bank Fields. It will be reintroduced when these 6239 problems have been resolved. 6240 6241 Fixed a problem with references to Alias objects within Package Objects. 6242 A 6243 reference to an Alias within the definition of a Package was not always 6244 resolved properly. Aliases to objects like Processors, Thermal zones, 6245 etc. 6246 were resolved to the actual object instead of a reference to the object 6247 as 6248 it 6249 should be. Package objects are only allowed to contain integer, string, 6250 buffer, package, and reference objects. Redhat bugzilla 608648. 6251 6252 Example Code and Data Size: These are the sizes for the OS-independent 6253 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6254 debug version of the code includes the debug output trace mechanism and 6255 has a 6256 much larger code and data size. 6257 6258 Previous Release: 6259 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 6260 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total 6261 Current Release: 6262 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 6263 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total 6264 6265 2) iASL Compiler/Disassembler and Tools: 6266 6267 iASL: Implemented a new compiler subsystem to allow definition and 6268 compilation of the non-AML ACPI tables such as FADT, MADT, SRAT, etc. 6269 These 6270 are called "ACPI Data Tables", and the new compiler is the "Data Table 6271 Compiler". This compiler is intended to simplify the existing error-prone 6272 process of creating these tables for the BIOS, as well as allowing the 6273 disassembly, modification, recompilation, and override of existing ACPI 6274 data 6275 tables. See the iASL User Guide for detailed information. 6276 6277 iASL: Implemented a new Template Generator option in support of the new 6278 Data 6279 Table Compiler. This option will create examples of all known ACPI tables 6280 that can be used as the basis for table development. See the iASL 6281 documentation and the -T option. 6282 6283 Disassembler and headers: Added support for the WDDT ACPI table (Watchdog 6284 Descriptor Table). 6285 6286 Updated the Linux makefiles for iASL and AcpiExec to place the generated 6287 object files in the local directory so that there can be no collisions 6288 between the shared files between them that are generated with different 6289 options. 6290 6291 Added support for Mac OS X in the Unix OSL used for iASL and AcpiExec. 6292 Use 6293 the #define __APPLE__ to enable this support. 6294 6295 ---------------------------------------- 6296 28 May 2010. Summary of changes for version 20100528: 6297 6298 Note: The ACPI 4.0a specification was released on April 5, 2010 and is 6299 available at www.acpi.info. This is primarily an errata release. 6300 6301 1) ACPI CA Core Subsystem: 6302 6303 Undefined ACPI tables: We are looking for the definitions for the 6304 following 6305 ACPI tables that have been seen in the field: ATKG, IEIT, GSCI. 6306 6307 Implemented support to enable multi-byte transfers for Embedded 6308 Controller 6309 (EC) operation regions. Previously, the maximum data size passed to the 6310 EC 6311 operation region handler was a single byte. There are often EC Fields 6312 larger 6313 than one byte that need to be transferred, and it is useful for the EC 6314 driver 6315 to lock these as a single transaction. This change enables single 6316 transfers 6317 larger than 8 bits. This effectively changes the access to the EC space 6318 from 6319 ByteAcc to AnyAcc, and will probably require changes to the host OS 6320 Embedded 6321 Controller driver to enable 16/32/64/256-bit transfers in addition to 8- 6322 bit 6323 transfers. Alexey Starikovskiy, Lin Ming 6324 6325 Implemented a performance enhancement for namespace search and access. 6326 This 6327 change enhances the performance of namespace searches and walks by adding 6328 a 6329 backpointer to the parent in each namespace node. On large namespaces, 6330 this 6331 change can improve overall ACPI performance by up to 9X. Adding a pointer 6332 to 6333 each namespace node increases the overall size of the internal namespace 6334 by 6335 about 5%, since each namespace entry usually consists of both a namespace 6336 node and an ACPI operand object. However, this is the first growth of the 6337 namespace in ten years. ACPICA bugzilla 817. Alexey Starikovskiy. 6338 6339 Implemented a performance optimization that reduces the number of 6340 namespace 6341 walks. On control method exit, only walk the namespace if the method is 6342 known 6343 to have created namespace objects outside of its local scope. Previously, 6344 the 6345 entire namespace was traversed on each control method exit. This change 6346 can 6347 improve overall ACPI performance by up to 3X. Alexey Starikovskiy, Bob 6348 Moore. 6349 6350 Added support to truncate I/O addresses to 16 bits for Windows 6351 compatibility. 6352 Some ASL code has been seen in the field that inadvertently has bits set 6353 above bit 15. This feature is optional and is enabled if the BIOS 6354 requests 6355 any Windows OSI strings. It can also be enabled by the host OS. Matthew 6356 Garrett, Bob Moore. 6357 6358 Added support to limit the maximum time for the ASL Sleep() operator. To 6359 prevent accidental deep sleeps, limit the maximum time that Sleep() will 6360 actually sleep. Configurable, the default maximum is two seconds. ACPICA 6361 bugzilla 854. 6362 6363 Added run-time validation support for the _WDG and_WED Microsoft 6364 predefined 6365 methods. These objects are defined by "Windows Instrumentation", and are 6366 not 6367 part of the ACPI spec. ACPICA BZ 860. 6368 6369 Expanded all statistic counters used during namespace and device 6370 initialization from 16 to 32 bits in order to support very large 6371 namespaces. 6372 6373 Replaced all instances of %d in printf format specifiers with %u since 6374 nearly 6375 all integers in ACPICA are unsigned. 6376 6377 Fixed the exception namestring for AE_WAKE_ONLY_GPE. Was incorrectly 6378 returned 6379 as AE_NO_HANDLER. 6380 6381 Example Code and Data Size: These are the sizes for the OS-independent 6382 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6383 debug version of the code includes the debug output trace mechanism and 6384 has a 6385 much larger code and data size. 6386 6387 Previous Release: 6388 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total 6389 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total 6390 Current Release: 6391 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 6392 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total 6393 6394 2) iASL Compiler/Disassembler and Tools: 6395 6396 iASL: Added compiler support for the _WDG and_WED Microsoft predefined 6397 methods. These objects are defined by "Windows Instrumentation", and are 6398 not 6399 part of the ACPI spec. ACPICA BZ 860. 6400 6401 AcpiExec: added option to disable the memory tracking mechanism. The -dt 6402 option will disable the tracking mechanism, which improves performance 6403 considerably. 6404 6405 AcpiExec: Restructured the command line options into -d (disable) and -e 6406 (enable) options. 6407 6408 ---------------------------------------- 6409 28 April 2010. Summary of changes for version 20100428: 6410 6411 1) ACPI CA Core Subsystem: 6412 6413 Implemented GPE support for dynamically loaded ACPI tables. For all GPEs, 6414 including FADT-based and GPE Block Devices, execute any _PRW methods in 6415 the 6416 new table, and process any _Lxx/_Exx GPE methods in the new table. Any 6417 runtime GPE that is referenced by an _Lxx/_Exx method in the new table is 6418 immediately enabled. Handles the FADT-defined GPEs as well as GPE Block 6419 Devices. Provides compatibility with other ACPI implementations. Two new 6420 files added, evgpeinit.c and evgpeutil.c. ACPICA BZ 833. Lin Ming, Bob 6421 Moore. 6422 6423 Fixed a regression introduced in version 20100331 within the table 6424 manager 6425 where initial table loading could fail. This was introduced in the fix 6426 for 6427 AcpiReallocateRootTable. Also, renamed some of fields in the table 6428 manager 6429 data structures to clarify their meaning and use. 6430 6431 Fixed a possible allocation overrun during internal object copy in 6432 AcpiUtCopySimpleObject. The original code did not correctly handle the 6433 case 6434 where the object to be copied was a namespace node. Lin Ming. ACPICA BZ 6435 847. 6436 6437 Updated the allocation dump routine, AcpiUtDumpAllocation and fixed a 6438 possible access beyond end-of-allocation. Also, now fully validate 6439 descriptor 6440 (size and type) before output. Lin Ming, Bob Moore. ACPICA BZ 847 6441 6442 Example Code and Data Size: These are the sizes for the OS-independent 6443 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6444 debug version of the code includes the debug output trace mechanism and 6445 has a 6446 much larger code and data size. 6447 6448 Previous Release: 6449 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total 6450 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total 6451 Current Release: 6452 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total 6453 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total 6454 6455 2) iASL Compiler/Disassembler and Tools: 6456 6457 iASL: Implemented Min/Max/Len/Gran validation for address resource 6458 descriptors. This change implements validation for the address fields 6459 that 6460 are common to all address-type resource descriptors. These checks are 6461 implemented: Checks for valid Min/Max, length within the Min/Max window, 6462 valid granularity, Min/Max a multiple of granularity, and _MIF/_MAF as 6463 per 6464 table 6-40 in the ACPI 4.0a specification. Also split the large 6465 aslrestype1.c 6466 and aslrestype2.c files into five new files. ACPICA BZ 840. 6467 6468 iASL: Added support for the _Wxx predefined names. This support was 6469 missing 6470 and these names were not recognized by the compiler as valid predefined 6471 names. ACPICA BZ 851. 6472 6473 iASL: Added an error for all predefined names that are defined to return 6474 no 6475 value and thus must be implemented as Control Methods. These include all 6476 of 6477 the _Lxx, _Exx, _Wxx, and _Qxx names, as well as some other miscellaneous 6478 names such as _DIS, _INI, _IRC, _OFF, _ON, and _PSx. ACPICA BZ 850, 856. 6479 6480 iASL: Implemented the -ts option to emit hex AML data in ASL format, as 6481 an 6482 ASL Buffer. Allows ACPI tables to be easily included within ASL files, to 6483 be 6484 dynamically loaded via the Load() operator. Also cleaned up output for 6485 the 6486 - 6487 ta and -tc options. ACPICA BZ 853. 6488 6489 Tests: Added a new file with examples of extended iASL error checking. 6490 Demonstrates the advanced error checking ability of the iASL compiler. 6491 Available at tests/misc/badcode.asl. 6492 6493 ---------------------------------------- 6494 31 March 2010. Summary of changes for version 20100331: 6495 6496 1) ACPI CA Core Subsystem: 6497 6498 Completed a major update for the GPE support in order to improve support 6499 for 6500 shared GPEs and to simplify both host OS and ACPICA code. Added a 6501 reference 6502 count mechanism to support shared GPEs that require multiple device 6503 drivers. 6504 Several external interfaces have changed. One external interface has been 6505 removed. One new external interface was added. Most of the GPE external 6506 interfaces now use the GPE spinlock instead of the events mutex (and the 6507 Flags parameter for many GPE interfaces has been removed.) See the 6508 updated 6509 ACPICA Programmer Reference for details. Matthew Garrett, Bob Moore, 6510 Rafael 6511 Wysocki. ACPICA BZ 831. 6512 6513 Changed: 6514 AcpiEnableGpe, AcpiDisableGpe, AcpiClearGpe, AcpiGetGpeStatus 6515 Removed: 6516 AcpiSetGpeType 6517 New: 6518 AcpiSetGpe 6519 6520 Implemented write support for DataTable operation regions. These regions 6521 are 6522 defined via the DataTableRegion() operator. Previously, only read support 6523 was 6524 implemented. The ACPI specification allows DataTableRegions to be 6525 read/write, 6526 however. 6527 6528 Implemented a new subsystem option to force a copy of the DSDT to local 6529 memory. Optionally copy the entire DSDT to local memory (instead of 6530 simply 6531 mapping it.) There are some (albeit very rare) BIOSs that corrupt or 6532 replace 6533 the original DSDT, creating the need for this option. Default is FALSE, 6534 do 6535 not copy the DSDT. 6536 6537 Implemented detection of a corrupted or replaced DSDT. This change adds 6538 support to detect a DSDT that has been corrupted and/or replaced from 6539 outside 6540 the OS (by firmware). This is typically catastrophic for the system, but 6541 has 6542 been seen on some machines. Once this problem has been detected, the DSDT 6543 copy option can be enabled via system configuration. Lin Ming, Bob Moore. 6544 6545 Fixed two problems with AcpiReallocateRootTable during the root table 6546 copy. 6547 When copying the root table to the new allocation, the length used was 6548 incorrect. The new size was used instead of the current table size, 6549 meaning 6550 too much data was copied. Also, the count of available slots for ACPI 6551 tables 6552 was not set correctly. Alexey Starikovskiy, Bob Moore. 6553 6554 Example Code and Data Size: These are the sizes for the OS-independent 6555 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6556 debug version of the code includes the debug output trace mechanism and 6557 has a 6558 much larger code and data size. 6559 6560 Previous Release: 6561 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total 6562 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total 6563 Current Release: 6564 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total 6565 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total 6566 6567 2) iASL Compiler/Disassembler and Tools: 6568 6569 iASL: Implement limited typechecking for values returned from predefined 6570 control methods. The type of any returned static (unnamed) object is now 6571 validated. For example, Return(1). ACPICA BZ 786. 6572 6573 iASL: Fixed a predefined name object verification regression. Fixes a 6574 problem 6575 introduced in version 20100304. An error is incorrectly generated if a 6576 predefined name is declared as a static named object with a value defined 6577 using the keywords "Zero", "One", or "Ones". Lin Ming. 6578 6579 iASL: Added Windows 7 support for the -g option (get local ACPI tables) 6580 by 6581 reducing the requested registry access rights. ACPICA BZ 842. 6582 6583 Disassembler: fixed a possible fault when generating External() 6584 statements. 6585 Introduced in commit ae7d6fd: Properly handle externals with parent- 6586 prefix 6587 (carat). Fixes a string length allocation calculation. Lin Ming. 6588 6589 ---------------------------------------- 6590 04 March 2010. Summary of changes for version 20100304: 6591 6592 1) ACPI CA Core Subsystem: 6593 6594 Fixed a possible problem with the AML Mutex handling function 6595 AcpiExReleaseMutex where the function could fault under the very rare 6596 condition when the interpreter has blocked, the interpreter lock is 6597 released, 6598 the interpreter is then reentered via the same thread, and attempts to 6599 acquire an AML mutex that was previously acquired. FreeBSD report 140979. 6600 Lin 6601 Ming. 6602 6603 Implemented additional configuration support for the AML "Debug Object". 6604 Output from the debug object can now be enabled via a global variable, 6605 AcpiGbl_EnableAmlDebugObject. This will assist with remote machine 6606 debugging. 6607 This debug output is now available in the release version of ACPICA 6608 instead 6609 of just the debug version. Also, the entire debug output module can now 6610 be 6611 configured out of the ACPICA build if desired. One new file added, 6612 executer/exdebug.c. Lin Ming, Bob Moore. 6613 6614 Added header support for the ACPI MCHI table (Management Controller Host 6615 Interface Table). This table was added in ACPI 4.0, but the defining 6616 document 6617 has only recently become available. 6618 6619 Standardized output of integer values for ACPICA warnings/errors. Always 6620 use 6621 0x prefix for hex output, always use %u for unsigned integer decimal 6622 output. 6623 Affects ACPI_INFO, ACPI_ERROR, ACPI_EXCEPTION, and ACPI_WARNING (about 6624 400 6625 invocations.) These invocations were converted from the original 6626 ACPI_DEBUG_PRINT invocations and were not consistent. ACPICA BZ 835. 6627 6628 Example Code and Data Size: These are the sizes for the OS-independent 6629 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6630 debug version of the code includes the debug output trace mechanism and 6631 has a 6632 much larger code and data size. 6633 6634 Previous Release: 6635 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total 6636 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total 6637 Current Release: 6638 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total 6639 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total 6640 6641 2) iASL Compiler/Disassembler and Tools: 6642 6643 iASL: Implemented typechecking support for static (non-control method) 6644 predefined named objects that are declared with the Name() operator. For 6645 example, the type of this object is now validated to be of type Integer: 6646 Name(_BBN, 1). This change migrates the compiler to using the core 6647 predefined 6648 name table instead of maintaining a local version. Added a new file, 6649 aslpredef.c. ACPICA BZ 832. 6650 6651 Disassembler: Added support for the ACPI 4.0 MCHI table. 6652 6653 ---------------------------------------- 6654 21 January 2010. Summary of changes for version 20100121: 6655 6656 1) ACPI CA Core Subsystem: 6657 6658 Added the 2010 copyright to all module headers and signons. This affects 6659 virtually every file in the ACPICA core subsystem, the iASL compiler, the 6660 tools/utilities, and the test suites. 6661 6662 Implemented a change to the AcpiGetDevices interface to eliminate 6663 unnecessary 6664 invocations of the _STA method. In the case where a specific _HID is 6665 requested, do not run _STA until a _HID match is found. This eliminates 6666 potentially dozens of _STA calls during a search for a particular 6667 device/HID, 6668 which in turn can improve boot times. ACPICA BZ 828. Lin Ming. 6669 6670 Implemented an additional repair for predefined method return values. 6671 Attempt 6672 to repair unexpected NULL elements within returned Package objects. 6673 Create 6674 an 6675 Integer of value zero, a NULL String, or a zero-length Buffer as 6676 appropriate. 6677 ACPICA BZ 818. Lin Ming, Bob Moore. 6678 6679 Removed the obsolete ACPI_INTEGER data type. This type was introduced as 6680 the 6681 code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0 6682 (with 6683 64-bit AML integers). It is now obsolete and this change removes it from 6684 the 6685 ACPICA code base, replaced by UINT64. The original typedef has been 6686 retained 6687 for now for compatibility with existing device driver code. ACPICA BZ 6688 824. 6689 6690 Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field 6691 in 6692 the parse tree object. 6693 6694 Added additional warning options for the gcc-4 generation. Updated the 6695 source 6696 accordingly. This includes some code restructuring to eliminate 6697 unreachable 6698 code, elimination of some gotos, elimination of unused return values, 6699 some 6700 additional casting, and removal of redundant declarations. 6701 6702 Example Code and Data Size: These are the sizes for the OS-independent 6703 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6704 debug version of the code includes the debug output trace mechanism and 6705 has a 6706 much larger code and data size. 6707 6708 Previous Release: 6709 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 6710 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 6711 Current Release: 6712 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total 6713 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total 6714 6715 2) iASL Compiler/Disassembler and Tools: 6716 6717 No functional changes for this release. 6718 6719 ---------------------------------------- 6720 14 December 2009. Summary of changes for version 20091214: 6721 6722 1) ACPI CA Core Subsystem: 6723 6724 Enhanced automatic data type conversions for predefined name repairs. 6725 This 6726 change expands the automatic repairs/conversions for predefined name 6727 return 6728 values to make Integers, Strings, and Buffers fully interchangeable. 6729 Also, 6730 a 6731 Buffer can be converted to a Package of Integers if necessary. The 6732 nsrepair.c 6733 module was completely restructured. Lin Ming, Bob Moore. 6734 6735 Implemented automatic removal of null package elements during predefined 6736 name 6737 repairs. This change will automatically remove embedded and trailing NULL 6738 package elements from returned package objects that are defined to 6739 contain 6740 a 6741 variable number of sub-packages. The driver is then presented with a 6742 package 6743 with no null elements to deal with. ACPICA BZ 819. 6744 6745 Implemented a repair for the predefined _FDE and _GTM names. The expected 6746 return value for both names is a Buffer of 5 DWORDs. This repair fixes 6747 two 6748 possible problems (both seen in the field), where a package of integers 6749 is 6750 returned, or a buffer of BYTEs is returned. With assistance from Jung-uk 6751 Kim. 6752 6753 Implemented additional module-level code support. This change will 6754 properly 6755 execute module-level code that is not at the root of the namespace (under 6756 a 6757 Device object, etc.). Now executes the code within the current scope 6758 instead 6759 of the root. ACPICA BZ 762. Lin Ming. 6760 6761 Fixed possible mutex acquisition errors when running _REG methods. Fixes 6762 a 6763 problem where mutex errors can occur when running a _REG method that is 6764 in 6765 the same scope as a method-defined operation region or an operation 6766 region 6767 under a module-level IF block. This type of code is rare, so the problem 6768 has 6769 not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore. 6770 6771 Fixed a possible memory leak during module-level code execution. An 6772 object 6773 could be leaked for each block of executed module-level code if the 6774 interpreter slack mode is enabled This change deletes any implicitly 6775 returned 6776 object from the module-level code block. Lin Ming. 6777 6778 Removed messages for successful predefined repair(s). The repair 6779 mechanism 6780 was considered too wordy. Now, messages are only unconditionally emitted 6781 if 6782 the return object cannot be repaired. Existing messages for successful 6783 repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ 6784 827. 6785 6786 Example Code and Data Size: These are the sizes for the OS-independent 6787 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6788 debug version of the code includes the debug output trace mechanism and 6789 has a 6790 much larger code and data size. 6791 6792 Previous Release: 6793 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 6794 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 6795 Current Release: 6796 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 6797 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 6798 6799 2) iASL Compiler/Disassembler and Tools: 6800 6801 iASL: Fixed a regression introduced in 20091112 where intermediate .SRC 6802 files 6803 were no longer automatically removed at the termination of the compile. 6804 6805 acpiexec: Implemented the -f option to specify default region fill value. 6806 This option specifies the value used to initialize buffers that simulate 6807 operation regions. Default value is zero. Useful for debugging problems 6808 that 6809 depend on a specific initial value for a region or field. 6810 6811 ---------------------------------------- 6812 12 November 2009. Summary of changes for version 20091112: 6813 6814 1) ACPI CA Core Subsystem: 6815 6816 Implemented a post-order callback to AcpiWalkNamespace. The existing 6817 interface only has a pre-order callback. This change adds an additional 6818 parameter for a post-order callback which will be more useful for bus 6819 scans. 6820 ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference. 6821 6822 Modified the behavior of the operation region memory mapping cache for 6823 SystemMemory. Ensure that the memory mappings created for operation 6824 regions 6825 do not cross 4K page boundaries. Crossing a page boundary while mapping 6826 regions can cause kernel warnings on some hosts if the pages have 6827 different 6828 attributes. Such regions are probably BIOS bugs, and this is the 6829 workaround. 6830 Linux BZ 14445. Lin Ming. 6831 6832 Implemented an automatic repair for predefined methods that must return 6833 sorted lists. This change will repair (by sorting) packages returned by 6834 _ALR, 6835 _PSS, and _TSS. Drivers can now assume that the packages are correctly 6836 sorted 6837 and do not contain NULL package elements. Adds one new file, 6838 namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore. 6839 6840 Fixed a possible fault during predefined name validation if a return 6841 Package 6842 object contains NULL elements. Also adds a warning if a NULL element is 6843 followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement 6844 may 6845 include repair or removal of all such NULL elements where possible. 6846 6847 Implemented additional module-level executable AML code support. This 6848 change 6849 will execute module-level code that is not at the root of the namespace 6850 (under a Device object, etc.) at table load time. Module-level executable 6851 AML 6852 code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming. 6853 6854 Implemented a new internal function to create Integer objects. This 6855 function 6856 simplifies miscellaneous object creation code. ACPICA BZ 823. 6857 6858 Reduced the severity of predefined repair messages, Warning to Info. 6859 Since 6860 the object was successfully repaired, a warning is too severe. Reduced to 6861 an 6862 info message for now. These messages may eventually be changed to debug- 6863 only. 6864 ACPICA BZ 812. 6865 6866 Example Code and Data Size: These are the sizes for the OS-independent 6867 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6868 debug version of the code includes the debug output trace mechanism and 6869 has a 6870 much larger code and data size. 6871 6872 Previous Release: 6873 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 6874 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 6875 Current Release: 6876 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 6877 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 6878 6879 2) iASL Compiler/Disassembler and Tools: 6880 6881 iASL: Implemented Switch() with While(1) so that Break works correctly. 6882 This 6883 change correctly implements the Switch operator with a surrounding 6884 While(1) 6885 so that the Break operator works as expected. ACPICA BZ 461. Lin Ming. 6886 6887 iASL: Added a message if a package initializer list is shorter than 6888 package 6889 length. Adds a new remark for a Package() declaration if an initializer 6890 list 6891 exists, but is shorter than the declared length of the package. Although 6892 technically legal, this is probably a coding error and it is seen in the 6893 field. ACPICA BZ 815. Lin Ming, Bob Moore. 6894 6895 iASL: Fixed a problem where the compiler could fault after the maximum 6896 number 6897 of errors was reached (200). 6898 6899 acpixtract: Fixed a possible warning for pointer cast if the compiler 6900 warning 6901 level set very high. 6902 6903 ---------------------------------------- 6904 13 October 2009. Summary of changes for version 20091013: 6905 6906 1) ACPI CA Core Subsystem: 6907 6908 Fixed a problem where an Operation Region _REG method could be executed 6909 more 6910 than once. If a custom address space handler is installed by the host 6911 before 6912 the "initialize operation regions" phase of the ACPICA initialization, 6913 any 6914 _REG methods for that address space could be executed twice. This change 6915 fixes the problem. ACPICA BZ 427. Lin Ming. 6916 6917 Fixed a possible memory leak for the Scope() ASL operator. When the exact 6918 invocation of "Scope(\)" is executed (change scope to root), one internal 6919 operand object was leaked. Lin Ming. 6920 6921 Implemented a run-time repair for the _MAT predefined method. If the _MAT 6922 return value is defined as a Field object in the AML, and the field 6923 size is less than or equal to the default width of an integer (32 or 6924 64),_MAT 6925 can incorrectly return an Integer instead of a Buffer. ACPICA now 6926 automatically repairs this problem. ACPICA BZ 810. 6927 6928 Implemented a run-time repair for the _BIF and _BIX predefined methods. 6929 The 6930 "OEM Information" field is often incorrectly returned as an Integer with 6931 value zero if the field is not supported by the platform. This is due to 6932 an 6933 ambiguity in the ACPI specification. The field should always be a string. 6934 ACPICA now automatically repairs this problem by returning a NULL string 6935 within the returned Package. ACPICA BZ 807. 6936 6937 Example Code and Data Size: These are the sizes for the OS-independent 6938 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6939 debug version of the code includes the debug output trace mechanism and 6940 has a 6941 much larger code and data size. 6942 6943 Previous Release: 6944 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 6945 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 6946 Current Release: 6947 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 6948 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 6949 6950 2) iASL Compiler/Disassembler and Tools: 6951 6952 Disassembler: Fixed a problem where references to external symbols that 6953 contained one or more parent-prefixes (carats) were not handled 6954 correctly, 6955 possibly causing a fault. ACPICA BZ 806. Lin Ming. 6956 6957 Disassembler: Restructured the code so that all functions that handle 6958 external symbols are in a single module. One new file is added, 6959 common/dmextern.c. 6960 6961 AML Debugger: Added a max count argument for the Batch command (which 6962 executes multiple predefined methods within the namespace.) 6963 6964 iASL: Updated the compiler documentation (User Reference.) Available at 6965 http://www.acpica.org/documentation/. ACPICA BZ 750. 6966 6967 AcpiXtract: Updated for Lint and other formatting changes. Close all open 6968 files. 6969 6970 ---------------------------------------- 6971 03 September 2009. Summary of changes for version 20090903: 6972 6973 1) ACPI CA Core Subsystem: 6974 6975 For Windows Vista compatibility, added the automatic execution of an _INI 6976 method located at the namespace root (\_INI). This method is executed at 6977 table load time. This support is in addition to the automatic execution 6978 of 6979 \_SB._INI. Lin Ming. 6980 6981 Fixed a possible memory leak in the interpreter for AML package objects 6982 if 6983 the package initializer list is longer than the defined size of the 6984 package. 6985 This apparently can only happen if the BIOS changes the package size on 6986 the 6987 fly (seen in a _PSS object), as ASL compilers do not allow this. The 6988 interpreter will truncate the package to the defined size (and issue an 6989 error 6990 message), but previously could leave the extra objects undeleted if they 6991 were 6992 pre-created during the argument processing (such is the case if the 6993 package 6994 consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805. 6995 6996 Fixed a problem seen when a Buffer or String is stored to itself via ASL. 6997 This has been reported in the field. Previously, ACPICA would zero out 6998 the 6999 buffer/string. Now, the operation is treated as a noop. Provides Windows 7000 compatibility. ACPICA BZ 803. Lin Ming. 7001 7002 Removed an extraneous error message for ASL constructs of the form 7003 Store(LocalX,LocalX) when LocalX is uninitialized. These curious 7004 statements 7005 are seen in many BIOSs and are once again treated as NOOPs and no error 7006 is 7007 emitted when they are encountered. ACPICA BZ 785. 7008 7009 Fixed an extraneous warning message if a _DSM reserved method returns a 7010 Package object. _DSM can return any type of object, so validation on the 7011 return type cannot be performed. ACPICA BZ 802. 7012 7013 Example Code and Data Size: These are the sizes for the OS-independent 7014 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7015 debug version of the code includes the debug output trace mechanism and 7016 has a 7017 much larger code and data size. 7018 7019 Previous Release: 7020 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 7021 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 7022 Current Release: 7023 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 7024 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 7025 7026 2) iASL Compiler/Disassembler and Tools: 7027 7028 iASL: Fixed a problem with the use of the Alias operator and Resource 7029 Templates. The correct alias is now constructed and no error is emitted. 7030 ACPICA BZ 738. 7031 7032 iASL: Implemented the -I option to specify additional search directories 7033 for 7034 include files. Allows multiple additional search paths for include files. 7035 Directories are searched in the order specified on the command line 7036 (after 7037 the local directory is searched.) ACPICA BZ 800. 7038 7039 iASL: Fixed a problem where the full pathname for include files was not 7040 emitted for warnings/errors. This caused the IDE support to not work 7041 properly. ACPICA BZ 765. 7042 7043 iASL: Implemented the -@ option to specify a Windows-style response file 7044 containing additional command line options. ACPICA BZ 801. 7045 7046 AcpiExec: Added support to load multiple AML files simultaneously (such 7047 as 7048 a 7049 DSDT and multiple SSDTs). Also added support for wildcards within the AML 7050 pathname. These features allow all machine tables to be easily loaded and 7051 debugged together. ACPICA BZ 804. 7052 7053 Disassembler: Added missing support for disassembly of HEST table Error 7054 Bank 7055 subtables. 7056 7057 ---------------------------------------- 7058 30 July 2009. Summary of changes for version 20090730: 7059 7060 The ACPI 4.0 implementation for ACPICA is complete with this release. 7061 7062 1) ACPI CA Core Subsystem: 7063 7064 ACPI 4.0: Added header file support for all new and changed ACPI tables. 7065 Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are 7066 new 7067 for ACPI 4.0, but have previously been supported in ACPICA are: CPEP, 7068 BERT, 7069 EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT. 7070 There 7071 have been some ACPI 4.0 changes to other existing tables. Split the large 7072 actbl1.h header into the existing actbl2.h header. ACPICA BZ 774. 7073 7074 ACPI 4.0: Implemented predefined name validation for all new names. There 7075 are 7076 31 new names in ACPI 4.0. The predefined validation module was split into 7077 two 7078 files. The new file is namespace/nsrepair.c. ACPICA BZ 770. 7079 7080 Implemented support for so-called "module-level executable code". This is 7081 executable AML code that exists outside of any control method and is 7082 intended 7083 to be executed at table load time. Although illegal since ACPI 2.0, this 7084 type 7085 of code still exists and is apparently still being created. Blocks of 7086 this 7087 code are now detected and executed as intended. Currently, the code 7088 blocks 7089 must exist under either an If, Else, or While construct; these are the 7090 typical cases seen in the field. ACPICA BZ 762. Lin Ming. 7091 7092 Implemented an automatic dynamic repair for predefined names that return 7093 nested Package objects. This applies to predefined names that are defined 7094 to 7095 return a variable-length Package of sub-packages. If the number of sub- 7096 packages is one, BIOS code is occasionally seen that creates a simple 7097 single 7098 package with no sub-packages. This code attempts to fix the problem by 7099 wrapping a new package object around the existing package. These methods 7100 can 7101 be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA 7102 BZ 7103 790. 7104 7105 Fixed a regression introduced in 20090625 for the AcpiGetDevices 7106 interface. 7107 The _HID/_CID matching was broken and no longer matched IDs correctly. 7108 ACPICA 7109 BZ 793. 7110 7111 Fixed a problem with AcpiReset where the reset would silently fail if the 7112 register was one of the protected I/O ports. AcpiReset now bypasses the 7113 port 7114 validation mechanism. This may eventually be driven into the 7115 AcpiRead/Write 7116 interfaces. 7117 7118 Fixed a regression related to the recent update of the AcpiRead/Write 7119 interfaces. A sleep/suspend could fail if the optional PM2 Control 7120 register 7121 does not exist during an attempt to write the Bus Master Arbitration bit. 7122 (However, some hosts already delete the code that writes this bit, and 7123 the 7124 code may in fact be obsolete at this date.) ACPICA BZ 799. 7125 7126 Fixed a problem where AcpiTerminate could fault if inadvertently called 7127 twice 7128 in succession. ACPICA BZ 795. 7129 7130 Example Code and Data Size: These are the sizes for the OS-independent 7131 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7132 debug version of the code includes the debug output trace mechanism and 7133 has a 7134 much larger code and data size. 7135 7136 Previous Release: 7137 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 7138 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 7139 Current Release: 7140 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 7141 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 7142 7143 2) iASL Compiler/Disassembler and Tools: 7144 7145 ACPI 4.0: Implemented disassembler support for all new ACPI tables and 7146 changes to existing tables. ACPICA BZ 775. 7147 7148 ---------------------------------------- 7149 25 June 2009. Summary of changes for version 20090625: 7150 7151 The ACPI 4.0 Specification was released on June 16 and is available at 7152 www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will 7153 continue for the next few releases. 7154 7155 1) ACPI CA Core Subsystem: 7156 7157 ACPI 4.0: Implemented interpreter support for the IPMI operation region 7158 address space. Includes support for bi-directional data buffers and an 7159 IPMI 7160 address space handler (to be installed by an IPMI device driver.) ACPICA 7161 BZ 7162 773. Lin Ming. 7163 7164 ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT. 7165 Includes 7166 support in both the header files and the disassembler. 7167 7168 Completed a major update for the AcpiGetObjectInfo external interface. 7169 Changes include: 7170 - Support for variable, unlimited length HID, UID, and CID strings. 7171 - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA, 7172 etc.) 7173 - Call the _SxW power methods on behalf of a device object. 7174 - Determine if a device is a PCI root bridge. 7175 - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO. 7176 These changes will require an update to all callers of this interface. 7177 See 7178 the updated ACPICA Programmer Reference for details. One new source file 7179 has 7180 been added - utilities/utids.c. ACPICA BZ 368, 780. 7181 7182 Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit 7183 transfers. The Value parameter has been extended from 32 bits to 64 bits 7184 in 7185 order to support new ACPI 4.0 tables. These changes will require an 7186 update 7187 to 7188 all callers of these interfaces. See the ACPICA Programmer Reference for 7189 details. ACPICA BZ 768. 7190 7191 Fixed several problems with AcpiAttachData. The handler was not invoked 7192 when 7193 the host node was deleted. The data sub-object was not automatically 7194 deleted 7195 when the host node was deleted. The interface to the handler had an 7196 unused 7197 parameter, this was removed. ACPICA BZ 778. 7198 7199 Enhanced the function that dumps ACPI table headers. All non-printable 7200 characters in the string fields are now replaced with '?' (Signature, 7201 OemId, 7202 OemTableId, and CompilerId.) ACPI tables with non-printable characters in 7203 these fields are occasionally seen in the field. ACPICA BZ 788. 7204 7205 Fixed a problem with predefined method repair code where the code that 7206 attempts to repair/convert an object of incorrect type is only executed 7207 on 7208 the first time the predefined method is called. The mechanism that 7209 disables 7210 warnings on subsequent calls was interfering with the repair mechanism. 7211 ACPICA BZ 781. 7212 7213 Fixed a possible memory leak in the predefined validation/repair code 7214 when 7215 a 7216 buffer is automatically converted to an expected string object. 7217 7218 Removed obsolete 16-bit files from the distribution and from the current 7219 git 7220 tree head. ACPICA BZ 776. 7221 7222 Example Code and Data Size: These are the sizes for the OS-independent 7223 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7224 debug version of the code includes the debug output trace mechanism and 7225 has a 7226 much larger code and data size. 7227 7228 Previous Release: 7229 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 7230 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 7231 Current Release: 7232 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 7233 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 7234 7235 2) iASL Compiler/Disassembler and Tools: 7236 7237 ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI 7238 operation region keyword. ACPICA BZ 771, 772. Lin Ming. 7239 7240 ACPI 4.0: iASL - implemented compile-time validation support for all new 7241 predefined names and control methods (31 total). ACPICA BZ 769. 7242 7243 ---------------------------------------- 7244 21 May 2009. Summary of changes for version 20090521: 7245 7246 1) ACPI CA Core Subsystem: 7247 7248 Disabled the preservation of the SCI enable bit in the PM1 control 7249 register. 7250 The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification 7251 to 7252 be 7253 a "preserved" bit - "OSPM always preserves this bit position", section 7254 4.7.3.2.1. However, some machines fail if this bit is in fact preserved 7255 because the bit needs to be explicitly set by the OS as a workaround. No 7256 machines fail if the bit is not preserved. Therefore, ACPICA no longer 7257 attempts to preserve this bit. 7258 7259 Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or 7260 incorrectly formed _PRT package could cause a fault. Added validation to 7261 ensure that each package element is actually a sub-package. 7262 7263 Implemented a new interface to install or override a single control 7264 method, 7265 AcpiInstallMethod. This interface is useful when debugging in order to 7266 repair 7267 an existing method or to install a missing method without having to 7268 override 7269 the entire ACPI table. See the ACPICA Programmer Reference for use and 7270 examples. Lin Ming, Bob Moore. 7271 7272 Fixed several reference count issues with the DdbHandle object that is 7273 created from a Load or LoadTable operator. Prevent premature deletion of 7274 the 7275 object. Also, mark the object as invalid once the table has been 7276 unloaded. 7277 This is needed because the handle itself may not be deleted after the 7278 table 7279 unload, depending on whether it has been stored in a named object by the 7280 caller. Lin Ming. 7281 7282 Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple 7283 mutexes of the same sync level are acquired but then not released in 7284 strict 7285 opposite order, the internally maintained Current Sync Level becomes 7286 confused 7287 and can cause subsequent execution errors. ACPICA BZ 471. 7288 7289 Changed the allowable release order for ASL mutex objects. The ACPI 4.0 7290 specification has been changed to make the SyncLevel for mutex objects 7291 more 7292 useful. When releasing a mutex, the SyncLevel of the mutex must now be 7293 the 7294 same as the current sync level. This makes more sense than the previous 7295 rule 7296 (SyncLevel less than or equal). This change updates the code to match the 7297 specification. 7298 7299 Fixed a problem with the local version of the AcpiOsPurgeCache function. 7300 The 7301 (local) cache must be locked during all cache object deletions. Andrew 7302 Baumann. 7303 7304 Updated the Load operator to use operation region interfaces. This 7305 replaces 7306 direct memory mapping with region access calls. Now, all region accesses 7307 go 7308 through the installed region handler as they should. 7309 7310 Simplified and optimized the NsGetNextNode function. Reduced parameter 7311 count 7312 and reduced code for this frequently used function. 7313 7314 Example Code and Data Size: These are the sizes for the OS-independent 7315 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7316 debug version of the code includes the debug output trace mechanism and 7317 has a 7318 much larger code and data size. 7319 7320 Previous Release: 7321 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 7322 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 7323 Current Release: 7324 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 7325 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 7326 7327 2) iASL Compiler/Disassembler and Tools: 7328 7329 Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some 7330 problems 7331 with sub-table disassembly and handling invalid sub-tables. Attempt 7332 recovery 7333 after an invalid sub-table ID. 7334 7335 ---------------------------------------- 7336 22 April 2009. Summary of changes for version 20090422: 7337 7338 1) ACPI CA Core Subsystem: 7339 7340 Fixed a compatibility issue with the recently released I/O port 7341 protection 7342 mechanism. For windows compatibility, 1) On a port protection violation, 7343 simply ignore the request and do not return an exception (allow the 7344 control 7345 method to continue execution.) 2) If only part of the request overlaps a 7346 protected port, read/write the individual ports that are not protected. 7347 Linux 7348 BZ 13036. Lin Ming 7349 7350 Enhanced the execution of the ASL/AML BreakPoint operator so that it 7351 actually 7352 breaks into the AML debugger if the debugger is present. This matches the 7353 ACPI-defined behavior. 7354 7355 Fixed several possible warnings related to the use of the configurable 7356 ACPI_THREAD_ID. This type can now be configured as either an integer or a 7357 pointer with no warnings. Also fixes several warnings in printf-like 7358 statements for the 64-bit build when the type is configured as a pointer. 7359 ACPICA BZ 766, 767. 7360 7361 Fixed a number of possible warnings when compiling with gcc 4+ (depending 7362 on 7363 warning options.) Examples include printf formats, aliasing, unused 7364 globals, 7365 missing prototypes, missing switch default statements, use of non-ANSI 7366 library functions, use of non-ANSI constructs. See generate/unix/Makefile 7367 for 7368 a list of warning options used with gcc 3 and 4. ACPICA BZ 735. 7369 7370 Example Code and Data Size: These are the sizes for the OS-independent 7371 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7372 debug version of the code includes the debug output trace mechanism and 7373 has a 7374 much larger code and data size. 7375 7376 Previous Release: 7377 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 7378 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 7379 Current Release: 7380 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 7381 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 7382 7383 2) iASL Compiler/Disassembler and Tools: 7384 7385 iASL: Fixed a generation warning from Bison 2.3 and fixed several 7386 warnings 7387 on 7388 the 64-bit build. 7389 7390 iASL: Fixed a problem where the Unix/Linux versions of the compiler could 7391 not 7392 correctly digest Windows/DOS formatted files (with CR/LF). 7393 7394 iASL: Added a new option for "quiet mode" (-va) that produces only the 7395 compilation summary, not individual errors and warnings. Useful for large 7396 batch compilations. 7397 7398 AcpiExec: Implemented a new option (-z) to enable a forced 7399 semaphore/mutex 7400 timeout that can be used to detect hang conditions during execution of 7401 AML 7402 code (includes both internal semaphores and AML-defined mutexes and 7403 events.) 7404 7405 Added new makefiles for the generation of acpica in a generic unix-like 7406 environment. These makefiles are intended to generate the acpica tools 7407 and 7408 utilities from the original acpica git source tree structure. 7409 7410 Test Suites: Updated and cleaned up the documentation files. Updated the 7411 copyrights to 2009, affecting all source files. Use the new version of 7412 iASL 7413 with quiet mode. Increased the number of available semaphores in the 7414 Windows 7415 OSL, allowing the aslts to execute fully on Windows. For the Unix OSL, 7416 added 7417 an alternate implementation of the semaphore timeout to allow aslts to 7418 execute fully on Cygwin. 7419 7420 ---------------------------------------- 7421 20 March 2009. Summary of changes for version 20090320: 7422 7423 1) ACPI CA Core Subsystem: 7424 7425 Fixed a possible race condition between AcpiWalkNamespace and dynamic 7426 table 7427 unloads. Added a reader/writer locking mechanism to allow multiple 7428 concurrent 7429 namespace walks (readers), but block a dynamic table unload until it can 7430 gain 7431 exclusive write access to the namespace. This fixes a problem where a 7432 table 7433 unload could (possibly catastrophically) delete the portion of the 7434 namespace 7435 that is currently being examined by a walk. Adds a new file, utlock.c, 7436 that 7437 implements the reader/writer lock mechanism. ACPICA BZ 749. 7438 7439 Fixed a regression introduced in version 20090220 where a change to the 7440 FADT 7441 handling could cause the ACPICA subsystem to access non-existent I/O 7442 ports. 7443 7444 Modified the handling of FADT register and table (FACS/DSDT) addresses. 7445 The 7446 FADT can contain both 32-bit and 64-bit versions of these addresses. 7447 Previously, the 64-bit versions were favored, meaning that if both 32 and 7448 64 7449 versions were valid, but not equal, the 64-bit version was used. This was 7450 found to cause some machines to fail. Now, in this case, the 32-bit 7451 version 7452 is used instead. This now matches the Windows behavior. 7453 7454 Implemented a new mechanism to protect certain I/O ports. Provides 7455 Microsoft 7456 compatibility and protects the standard PC I/O ports from access via AML 7457 code. Adds a new file, hwvalid.c 7458 7459 Fixed a possible extraneous warning message from the FADT support. The 7460 message warns of a 32/64 length mismatch between the legacy and GAS 7461 definitions for a register. 7462 7463 Removed the obsolete AcpiOsValidateAddress OSL interface. This interface 7464 is 7465 made obsolete by the port protection mechanism above. It was previously 7466 used 7467 to validate the entire address range of an operation region, which could 7468 be 7469 incorrect if the range included illegal ports, but fields within the 7470 operation region did not actually access those ports. Validation is now 7471 performed on a per-field basis instead of the entire region. 7472 7473 Modified the handling of the PM1 Status Register ignored bit (bit 11.) 7474 Ignored bits must be "preserved" according to the ACPI spec. Usually, 7475 this 7476 means a read/modify/write when writing to the register. However, for 7477 status 7478 registers, writing a one means clear the event. Writing a zero means 7479 preserve 7480 the event (do not clear.) This behavior is clarified in the ACPI 4.0 7481 spec, 7482 and the ACPICA code now simply always writes a zero to the ignored bit. 7483 7484 Modified the handling of ignored bits for the PM1 A/B Control Registers. 7485 As 7486 per the ACPI specification, for the control registers, preserve 7487 (read/modify/write) all bits that are defined as either reserved or 7488 ignored. 7489 7490 Updated the handling of write-only bits in the PM1 A/B Control Registers. 7491 When reading the register, zero the write-only bits as per the ACPI spec. 7492 ACPICA BZ 443. Lin Ming. 7493 7494 Removed "Linux" from the list of supported _OSI strings. Linux no longer 7495 wants to reply true to this request. The Windows strings are the only 7496 paths 7497 through the AML that are tested and known to work properly. 7498 7499 Previous Release: 7500 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 7501 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 7502 Current Release: 7503 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 7504 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 7505 7506 2) iASL Compiler/Disassembler and Tools: 7507 7508 Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c 7509 and 7510 aetables.c 7511 7512 ---------------------------------------- 7513 20 February 2009. Summary of changes for version 20090220: 7514 7515 1) ACPI CA Core Subsystem: 7516 7517 Optimized the ACPI register locking. Removed locking for reads from the 7518 ACPI 7519 bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock 7520 is 7521 not required when reading the single-bit registers. The 7522 AcpiGetRegisterUnlocked function is no longer needed and has been 7523 removed. 7524 This will improve performance for reads on these registers. ACPICA BZ 7525 760. 7526 7527 Fixed the parameter validation for AcpiRead/Write. Now return 7528 AE_BAD_PARAMETER if the input register pointer is null, and 7529 AE_BAD_ADDRESS 7530 if 7531 the register has an address of zero. Previously, these cases simply 7532 returned 7533 AE_OK. For optional registers such as PM1B status/enable/control, the 7534 caller 7535 should check for a valid register address before calling. ACPICA BZ 748. 7536 7537 Renamed the external ACPI bit register access functions. Renamed 7538 AcpiGetRegister and AcpiSetRegister to clarify the purpose of these 7539 functions. The new names are AcpiReadBitRegister and 7540 AcpiWriteBitRegister. 7541 Also, restructured the code for these functions by simplifying the code 7542 path 7543 and condensing duplicate code to reduce code size. 7544 7545 Added new functions to transparently handle the possibly split PM1 A/B 7546 registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two 7547 functions 7548 now handle the split registers for PM1 Status, Enable, and Control. 7549 ACPICA 7550 BZ 7551 746. 7552 7553 Added a function to handle the PM1 control registers, 7554 AcpiHwWritePm1Control. 7555 This function writes both of the PM1 control registers (A/B). These 7556 registers 7557 are different than the PM1 A/B status and enable registers in that 7558 different 7559 values can be written to the A/B registers. Most notably, the SLP_TYP 7560 bits 7561 can be different, as per the values returned from the _Sx predefined 7562 methods. 7563 7564 Removed an extra register write within AcpiHwClearAcpiStatus. This 7565 function 7566 was writing an optional PM1B status register twice. The existing call to 7567 the 7568 low-level AcpiHwRegisterWrite automatically handles a possibly split PM1 7569 A/B 7570 register. ACPICA BZ 751. 7571 7572 Split out the PM1 Status registers from the FADT. Added new globals for 7573 these 7574 registers (A/B), similar to the way the PM1 Enable registers are handled. 7575 Instead of overloading the FADT Event Register blocks. This makes the 7576 code 7577 clearer and less prone to error. 7578 7579 Fixed the warning message for when the platform contains too many ACPI 7580 tables 7581 for the default size of the global root table data structure. The 7582 calculation 7583 for the truncation value was incorrect. 7584 7585 Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this 7586 obsolete macro, since it is now a simple reference to ->common.type. 7587 There 7588 were about 150 invocations of the macro across 41 files. ACPICA BZ 755. 7589 7590 Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as 7591 TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to 7592 simply SLEEP_TYPE. ACPICA BZ 754. 7593 7594 Conditionally compile the AcpiSetFirmwareWakingVector64 function. This 7595 function is only needed on 64-bit host operating systems and is thus not 7596 included for 32-bit hosts. 7597 7598 Debug output: print the input and result for invocations of the _OSI 7599 reserved 7600 control method via the ACPI_LV_INFO debug level. Also, reduced some of 7601 the 7602 verbosity of this debug level. Len Brown. 7603 7604 Example Code and Data Size: These are the sizes for the OS-independent 7605 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7606 debug version of the code includes the debug output trace mechanism and 7607 has a 7608 much larger code and data size. 7609 7610 Previous Release: 7611 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 7612 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 7613 Current Release: 7614 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 7615 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 7616 7617 2) iASL Compiler/Disassembler and Tools: 7618 7619 Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the 7620 various legal performance profiles. 7621 7622 ---------------------------------------- 7623 23 January 2009. Summary of changes for version 20090123: 7624 7625 1) ACPI CA Core Subsystem: 7626 7627 Added the 2009 copyright to all module headers and signons. This affects 7628 virtually every file in the ACPICA core subsystem, the iASL compiler, and 7629 the tools/utilities. 7630 7631 Implemented a change to allow the host to override any ACPI table, 7632 including 7633 dynamically loaded tables. Previously, only the DSDT could be replaced by 7634 the 7635 host. With this change, the AcpiOsTableOverride interface is called for 7636 each 7637 table found in the RSDT/XSDT during ACPICA initialization, and also 7638 whenever 7639 a table is dynamically loaded via the AML Load operator. 7640 7641 Updated FADT flag definitions, especially the Boot Architecture flags. 7642 7643 Debugger: For the Find command, automatically pad the input ACPI name 7644 with 7645 underscores if the name is shorter than 4 characters. This enables a 7646 match 7647 with the actual namespace entry which is itself padded with underscores. 7648 7649 Example Code and Data Size: These are the sizes for the OS-independent 7650 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7651 debug version of the code includes the debug output trace mechanism and 7652 has a 7653 much larger code and data size. 7654 7655 Previous Release: 7656 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 7657 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 7658 Current Release: 7659 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 7660 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 7661 7662 2) iASL Compiler/Disassembler and Tools: 7663 7664 Fix build error under Bison-2.4. 7665 7666 Dissasembler: Enhanced FADT support. Added decoding of the Boot 7667 Architecture 7668 flags. Now decode all flags, regardless of the FADT version. Flag output 7669 includes the FADT version which first defined each flag. 7670 7671 The iASL -g option now dumps the RSDT to a file (in addition to the FADT 7672 and 7673 DSDT). Windows only. 7674 7675 ---------------------------------------- 7676 04 December 2008. Summary of changes for version 20081204: 7677 7678 1) ACPI CA Core Subsystem: 7679 7680 The ACPICA Programmer Reference has been completely updated and revamped 7681 for 7682 this release. This includes updates to the external interfaces, OSL 7683 interfaces, the overview sections, and the debugger reference. 7684 7685 Several new ACPICA interfaces have been implemented and documented in the 7686 programmer reference: 7687 AcpiReset - Writes the reset value to the FADT-defined reset register. 7688 AcpiDisableAllGpes - Disable all available GPEs. 7689 AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs. 7690 AcpiGetGpeDevice - Get the GPE block device associated with a GPE. 7691 AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs. 7692 AcpiRead - Low-level read ACPI register (was HwLowLevelRead.) 7693 AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.) 7694 7695 Most of the public ACPI hardware-related interfaces have been moved to a 7696 new 7697 file, components/hardware/hwxface.c 7698 7699 Enhanced the FADT parsing and low-level ACPI register access: The ACPI 7700 register lengths within the FADT are now used, and the low level ACPI 7701 register access no longer hardcodes the ACPI register lengths. Given that 7702 there may be some risk in actually trusting the FADT register lengths, a 7703 run- 7704 time option was added to fall back to the default hardcoded lengths if 7705 the 7706 FADT proves to contain incorrect values - UseDefaultRegisterWidths. This 7707 option is set to true for now, and a warning is issued if a suspicious 7708 FADT 7709 register length is overridden with the default value. 7710 7711 Fixed a reference count issue in NsRepairObject. This problem was 7712 introduced 7713 in version 20081031 as part of a fix to repair Buffer objects within 7714 Packages. Lin Ming. 7715 7716 Added semaphore support to the Linux/Unix application OS-services layer 7717 (OSL). ACPICA BZ 448. Lin Ming. 7718 7719 Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes 7720 will 7721 be implemented in the OSL, or will binary semaphores be used instead. 7722 7723 Example Code and Data Size: These are the sizes for the OS-independent 7724 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7725 debug version of the code includes the debug output trace mechanism and 7726 has a 7727 much larger code and data size. 7728 7729 Previous Release: 7730 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 7731 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 7732 Current Release: 7733 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 7734 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 7735 7736 2) iASL Compiler/Disassembler and Tools: 7737 7738 iASL: Completed the '-e' option to include additional ACPI tables in 7739 order 7740 to 7741 aid with disassembly and External statement generation. ACPICA BZ 742. 7742 Lin 7743 Ming. 7744 7745 iASL: Removed the "named object in while loop" error. The compiler cannot 7746 determine how many times a loop will execute. ACPICA BZ 730. 7747 7748 Disassembler: Implemented support for FADT revision 2 (MS extension). 7749 ACPICA 7750 BZ 743. 7751 7752 Disassembler: Updates for several ACPI data tables (HEST, EINJ, and 7753 MCFG). 7754 7755 ---------------------------------------- 7756 31 October 2008. Summary of changes for version 20081031: 7757 7758 1) ACPI CA Core Subsystem: 7759 7760 Restructured the ACPICA header files into public/private. acpi.h now 7761 includes 7762 only the "public" acpica headers. All other acpica headers are "private" 7763 and 7764 should not be included by acpica users. One new file, accommon.h is used 7765 to 7766 include the commonly used private headers for acpica code generation. 7767 Future 7768 plans include moving all private headers to a new subdirectory. 7769 7770 Implemented an automatic Buffer->String return value conversion for 7771 predefined ACPI methods. For these methods (such as _BIF), added 7772 automatic 7773 conversion for return objects that are required to be a String, but a 7774 Buffer 7775 was found instead. This can happen when reading string battery data from 7776 an 7777 operation region, because it used to be difficult to convert the data 7778 from 7779 buffer to string from within the ASL. Ensures that the host OS is 7780 provided 7781 with a valid null-terminated string. Linux BZ 11822. 7782 7783 Updated the FACS waking vector interfaces. Split 7784 AcpiSetFirmwareWakingVector 7785 into two: one for the 32-bit vector, another for the 64-bit vector. This 7786 is 7787 required because the host OS must setup the wake much differently for 7788 each 7789 vector (real vs. protected mode, etc.) and the interface itself should 7790 not 7791 be 7792 deciding which vector to use. Also, eliminated the 7793 GetFirmwareWakingVector 7794 interface, as it served no purpose (only the firmware reads the vector, 7795 OS 7796 only writes the vector.) ACPICA BZ 731. 7797 7798 Implemented a mechanism to escape infinite AML While() loops. Added a 7799 loop 7800 counter to force exit from AML While loops if the count becomes too 7801 large. 7802 This can occur in poorly written AML when the hardware does not respond 7803 within a while loop and the loop does not implement a timeout. The 7804 maximum 7805 loop count is configurable. A new exception code is returned when a loop 7806 is 7807 broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore. 7808 7809 Optimized the execution of AML While loops. Previously, a control state 7810 object was allocated and freed for each execution of the loop. The 7811 optimization is to simply reuse the control state for each iteration. 7812 This 7813 speeds up the raw loop execution time by about 5%. 7814 7815 Enhanced the implicit return mechanism. For Windows compatibility, return 7816 an 7817 implicit integer of value zero for methods that contain no executable 7818 code. 7819 Such methods are seen in the field as stubs (presumably), and can cause 7820 drivers to fail if they expect a return value. Lin Ming. 7821 7822 Allow multiple backslashes as root prefixes in namepaths. In a fully 7823 qualified namepath, allow multiple backslash prefixes. This can happen 7824 (and 7825 is seen in the field) because of the use of a double-backslash in strings 7826 (since backslash is the escape character) causing confusion. ACPICA BZ 7827 739 7828 Lin Ming. 7829 7830 Emit a warning if two different FACS or DSDT tables are discovered in the 7831 FADT. Checks if there are two valid but different addresses for the FACS 7832 and 7833 DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.) 7834 7835 Consolidated the method argument count validation code. Merged the code 7836 that 7837 validates control method argument counts into the predefined validation 7838 module. Eliminates possible multiple warnings for incorrect argument 7839 counts. 7840 7841 Implemented ACPICA example code. Includes code for ACPICA initialization, 7842 handler installation, and calling a control method. Available at 7843 source/tools/examples. 7844 7845 Added a global pointer for FACS table to simplify internal FACS access. 7846 Use 7847 the global pointer instead of using AcpiGetTableByIndex for each FACS 7848 access. 7849 This simplifies the code for the Global Lock and the Firmware Waking 7850 Vector(s). 7851 7852 Example Code and Data Size: These are the sizes for the OS-independent 7853 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7854 debug version of the code includes the debug output trace mechanism and 7855 has a 7856 much larger code and data size. 7857 7858 Previous Release: 7859 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 7860 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 7861 Current Release: 7862 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 7863 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 7864 7865 2) iASL Compiler/Disassembler and Tools: 7866 7867 iASL: Improved disassembly of external method calls. Added the -e option 7868 to 7869 allow the inclusion of additional ACPI tables to help with the 7870 disassembly 7871 of 7872 method invocations and the generation of external declarations during the 7873 disassembly. Certain external method invocations cannot be disassembled 7874 properly without the actual declaration of the method. Use the -e option 7875 to 7876 include the table where the external method(s) are actually declared. 7877 Most 7878 useful for disassembling SSDTs that make method calls back to the master 7879 DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl 7880 -d 7881 -e dsdt.aml ssdt1.aml 7882 7883 iASL: Fix to allow references to aliases within ASL namepaths. Fixes a 7884 problem where the use of an alias within a namepath would result in a not 7885 found error or cause the compiler to fault. Also now allows forward 7886 references from the Alias operator itself. ACPICA BZ 738. 7887 7888 ---------------------------------------- 7889 26 September 2008. Summary of changes for version 20080926: 7890 7891 1) ACPI CA Core Subsystem: 7892 7893 Designed and implemented a mechanism to validate predefined ACPI methods 7894 and 7895 objects. This code validates the predefined ACPI objects (objects whose 7896 names 7897 start with underscore) that appear in the namespace, at the time they are 7898 evaluated. The argument count and the type of the returned object are 7899 validated against the ACPI specification. The purpose of this validation 7900 is 7901 to detect problems with the BIOS-implemented predefined ACPI objects 7902 before 7903 the results are returned to the ACPI-related drivers. Future enhancements 7904 may 7905 include actual repair of incorrect return objects where possible. Two new 7906 files are nspredef.c and acpredef.h. 7907 7908 Fixed a fault in the AML parser if a memory allocation fails during the 7909 Op 7910 completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492. 7911 7912 Fixed an issue with implicit return compatibility. This change improves 7913 the 7914 implicit return mechanism to be more compatible with the MS interpreter. 7915 Lin 7916 Ming, ACPICA BZ 349. 7917 7918 Implemented support for zero-length buffer-to-string conversions. Allow 7919 zero 7920 length strings during interpreter buffer-to-string conversions. For 7921 example, 7922 during the ToDecimalString and ToHexString operators, as well as implicit 7923 conversions. Fiodor Suietov, ACPICA BZ 585. 7924 7925 Fixed two possible memory leaks in the error exit paths of 7926 AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions 7927 are 7928 similar in that they use a stack of state objects in order to eliminate 7929 recursion. The stack must be fully unwound and deallocated if an error 7930 occurs. Lin Ming. ACPICA BZ 383. 7931 7932 Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the 7933 global 7934 ACPI register table. This bit does not exist and is unused. Lin Ming, Bob 7935 Moore ACPICA BZ 442. 7936 7937 Removed the obsolete version number in module headers. Removed the 7938 "$Revision" number that appeared in each module header. This version 7939 number 7940 was useful under SourceSafe and CVS, but has no meaning under git. It is 7941 not 7942 only incorrect, it could also be misleading. 7943 7944 Example Code and Data Size: These are the sizes for the OS-independent 7945 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7946 debug version of the code includes the debug output trace mechanism and 7947 has a 7948 much larger code and data size. 7949 7950 Previous Release: 7951 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 7952 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 7953 Current Release: 7954 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 7955 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 7956 7957 ---------------------------------------- 7958 29 August 2008. Summary of changes for version 20080829: 7959 7960 1) ACPI CA Core Subsystem: 7961 7962 Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type 7963 Reference. Changes include the elimination of cheating on the Object 7964 field 7965 for the DdbHandle subtype, addition of a reference class field to 7966 differentiate the various reference types (instead of an AML opcode), and 7967 the 7968 cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723 7969 7970 Reduce an error to a warning for an incorrect method argument count. 7971 Previously aborted with an error if too few arguments were passed to a 7972 control method via the external ACPICA interface. Now issue a warning 7973 instead 7974 and continue. Handles the case where the method inadvertently declares 7975 too 7976 many arguments, but does not actually use the extra ones. Applies mainly 7977 to 7978 the predefined methods. Lin Ming. Linux BZ 11032. 7979 7980 Disallow the evaluation of named object types with no intrinsic value. 7981 Return 7982 AE_TYPE for objects that have no value and therefore evaluation is 7983 undefined: 7984 Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation 7985 of 7986 these types were allowed, but an exception would be generated at some 7987 point 7988 during the evaluation. Now, the error is generated up front. 7989 7990 Fixed a possible memory leak in the AcpiNsGetExternalPathname function 7991 (nsnames.c). Fixes a leak in the error exit path. 7992 7993 Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These 7994 debug 7995 levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and 7996 ACPI_EXCEPTION 7997 interfaces. Also added ACPI_DB_EVENTS to correspond with the existing 7998 ACPI_LV_EVENTS. 7999 8000 Removed obsolete and/or unused exception codes from the acexcep.h header. 8001 There is the possibility that certain device drivers may be affected if 8002 they 8003 use any of these exceptions. 8004 8005 The ACPICA documentation has been added to the public git source tree, 8006 under 8007 acpica/documents. Included are the ACPICA programmer reference, the iASL 8008 compiler reference, and the changes.txt release logfile. 8009 8010 Example Code and Data Size: These are the sizes for the OS-independent 8011 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8012 debug version of the code includes the debug output trace mechanism and 8013 has a 8014 much larger code and data size. 8015 8016 Previous Release: 8017 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 8018 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 8019 Current Release: 8020 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 8021 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 8022 8023 2) iASL Compiler/Disassembler and Tools: 8024 8025 Allow multiple argument counts for the predefined _SCP method. ACPI 3.0 8026 defines _SCP with 3 arguments. Previous versions defined it with only 1 8027 argument. iASL now allows both definitions. 8028 8029 iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for 8030 zero- 8031 length subtables when disassembling ACPI tables. Also fixed a couple of 8032 errors where a full 16-bit table type field was not extracted from the 8033 input 8034 properly. 8035 8036 acpisrc: Improve comment counting mechanism for generating source code 8037 statistics. Count first and last lines of multi-line comments as 8038 whitespace, 8039 not comment lines. Handle Linux legal header in addition to standard 8040 acpica 8041 header. 8042 8043 ---------------------------------------- 8044 8045 29 July 2008. Summary of changes for version 20080729: 8046 8047 1) ACPI CA Core Subsystem: 8048 8049 Fix a possible deadlock in the GPE dispatch. Remove call to 8050 AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will 8051 attempt 8052 to acquire the GPE lock but can deadlock since the GPE lock is already 8053 held 8054 at dispatch time. This code was introduced in version 20060831 as a 8055 response 8056 to Linux BZ 6881 and has since been removed from Linux. 8057 8058 Add a function to dereference returned reference objects. Examines the 8059 return 8060 object from a call to AcpiEvaluateObject. Any Index or RefOf references 8061 are 8062 automatically dereferenced in an attempt to return something useful 8063 (these 8064 reference types cannot be converted into an external ACPI_OBJECT.) 8065 Provides 8066 MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105 8067 8068 x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new 8069 subtables for the MADT and one new subtable for the SRAT. Includes 8070 disassembler and AcpiSrc support. Data from the Intel 64 Architecture 8071 x2APIC 8072 Specification, June 2008. 8073 8074 Additional error checking for pathname utilities. Add error check after 8075 all 8076 calls to AcpiNsGetPathnameLength. Add status return from 8077 AcpiNsBuildExternalPath and check after all calls. Add parameter 8078 validation 8079 to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar. 8080 8081 Return status from the global init function AcpiUtGlobalInitialize. This 8082 is 8083 used by both the kernel subsystem and the utilities such as iASL 8084 compiler. 8085 The function could possibly fail when the caches are initialized. Yang 8086 Yi. 8087 8088 Add a function to decode reference object types to strings. Created for 8089 improved error messages. 8090 8091 Improve object conversion error messages. Better error messages during 8092 object 8093 conversion from internal to the external ACPI_OBJECT. Used for external 8094 calls 8095 to AcpiEvaluateObject. 8096 8097 Example Code and Data Size: These are the sizes for the OS-independent 8098 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8099 debug version of the code includes the debug output trace mechanism and 8100 has a 8101 much larger code and data size. 8102 8103 Previous Release: 8104 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 8105 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 8106 Current Release: 8107 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 8108 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 8109 8110 2) iASL Compiler/Disassembler and Tools: 8111 8112 Debugger: fix a possible hang when evaluating non-methods. Fixes a 8113 problem 8114 introduced in version 20080701. If the object being evaluated (via 8115 execute 8116 command) is not a method, the debugger can hang while trying to obtain 8117 non- 8118 existent parameters. 8119 8120 iASL: relax error for using reserved "_T_x" identifiers. These names can 8121 appear in a disassembled ASL file if they were emitted by the original 8122 compiler. Instead of issuing an error or warning and forcing the user to 8123 manually change these names, issue a remark instead. 8124 8125 iASL: error if named object created in while loop. Emit an error if any 8126 named 8127 object is created within a While loop. If allowed, this code will 8128 generate 8129 a 8130 run-time error on the second iteration of the loop when an attempt is 8131 made 8132 to 8133 create the same named object twice. ACPICA bugzilla 730. 8134 8135 iASL: Support absolute pathnames for include files. Add support for 8136 absolute 8137 pathnames within the Include operator. previously, only relative 8138 pathnames 8139 were supported. 8140 8141 iASL: Enforce minimum 1 interrupt in interrupt macro and Resource 8142 Descriptor. 8143 The ACPI spec requires one interrupt minimum. BZ 423 8144 8145 iASL: Handle a missing ResourceSource arg, with a present SourceIndex. 8146 Handles the case for the Interrupt Resource Descriptor where 8147 the ResourceSource argument is omitted but ResourceSourceIndex 8148 is present. Now leave room for the Index. BZ 426 8149 8150 iASL: Prevent error message if CondRefOf target does not exist. Fixes 8151 cases 8152 where an error message is emitted if the target does not exist. BZ 516 8153 8154 iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option 8155 (get ACPI tables on Windows). This was apparently broken in version 8156 20070919. 8157 8158 AcpiXtract: Handle EOF while extracting data. Correctly handle the case 8159 where 8160 the EOF happens immediately after the last table in the input file. Print 8161 completion message. Previously, no message was displayed in this case. 8162 8163 ---------------------------------------- 8164 01 July 2008. Summary of changes for version 20080701: 8165 8166 0) Git source tree / acpica.org 8167 8168 Fixed a problem where a git-clone from http would not transfer the entire 8169 source tree. 8170 8171 1) ACPI CA Core Subsystem: 8172 8173 Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one 8174 enable bit. Now performs a read-change-write of the enable register 8175 instead 8176 of simply writing out the cached enable mask. This will prevent 8177 inadvertent 8178 enabling of GPEs if a rogue GPE is received during initialization (before 8179 GPE 8180 handlers are installed.) 8181 8182 Implemented a copy for dynamically loaded tables. Previously, dynamically 8183 loaded tables were simply mapped - but on some machines this memory is 8184 corrupted after suspend. Now copy the table to a local buffer. For the 8185 OpRegion case, added checksum verify. Use the table length from the table 8186 header, not the region length. For the Buffer case, use the table length 8187 also. Dennis Noordsij, Bob Moore. BZ 10734 8188 8189 Fixed a problem where the same ACPI table could not be dynamically loaded 8190 and 8191 unloaded more than once. Without this change, a table cannot be loaded 8192 again 8193 once it has been loaded/unloaded one time. The current mechanism does not 8194 unregister a table upon an unload. During a load, if the same table is 8195 found, 8196 this no longer returns an exception. BZ 722 8197 8198 Fixed a problem where the wrong descriptor length was calculated for the 8199 EndTag descriptor in 64-bit mode. The "minimal" descriptors such as 8200 EndTag 8201 are calculated as 12 bytes long, but the actual length in the internal 8202 descriptor is 16 because of the round-up to 8 on the 64-bit build. 8203 Reported 8204 by Linn Crosetto. BZ 728 8205 8206 Fixed a possible memory leak in the Unload operator. The DdbHandle 8207 returned 8208 by Load() did not have its reference count decremented during unload, 8209 leading 8210 to a memory leak. Lin Ming. BZ 727 8211 8212 Fixed a possible memory leak when deleting thermal/processor objects. Any 8213 associated notify handlers (and objects) were not being deleted. Fiodor 8214 Suietov. BZ 506 8215 8216 Fixed the ordering of the ASCII names in the global mutex table to match 8217 the 8218 actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug 8219 only. 8220 Vegard Nossum. BZ 726 8221 8222 Enhanced the AcpiGetObjectInfo interface to return the number of required 8223 arguments if the object is a control method. Added this call to the 8224 debugger 8225 so the proper number of default arguments are passed to a method. This 8226 prevents a warning when executing methods from AcpiExec. 8227 8228 Added a check for an invalid handle in AcpiGetObjectInfo. Return 8229 AE_BAD_PARAMETER if input handle is invalid. BZ 474 8230 8231 Fixed an extraneous warning from exconfig.c on the 64-bit build. 8232 8233 Example Code and Data Size: These are the sizes for the OS-independent 8234 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8235 debug version of the code includes the debug output trace mechanism and 8236 has a 8237 much larger code and data size. 8238 8239 Previous Release: 8240 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 8241 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 8242 Current Release: 8243 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 8244 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 8245 8246 2) iASL Compiler/Disassembler and Tools: 8247 8248 iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both 8249 resource descriptor names. 8250 8251 iASL: Detect invalid ASCII characters in input (windows version). Removed 8252 the 8253 "-CF" flag from the flex compile, enables correct detection of non-ASCII 8254 characters in the input. BZ 441 8255 8256 iASL: Eliminate warning when result of LoadTable is not used. Eliminate 8257 the 8258 "result of operation not used" warning when the DDB handle returned from 8259 LoadTable is not used. The warning is not needed. BZ 590 8260 8261 AcpiExec: Add support for dynamic table load/unload. Now calls _CFG 8262 method 8263 to 8264 pass address of table to the AML. Added option to disable OpRegion 8265 simulation 8266 to allow creation of an OpRegion with a real address that was passed to 8267 _CFG. 8268 All of this allows testing of the Load and Unload operators from 8269 AcpiExec. 8270 8271 Debugger: update tables command for unloaded tables. Handle unloaded 8272 tables 8273 and use the standard table header output routine. 8274 8275 ---------------------------------------- 8276 09 June 2008. Summary of changes for version 20080609: 8277 8278 1) ACPI CA Core Subsystem: 8279 8280 Implemented a workaround for reversed _PRT entries. A significant number 8281 of 8282 BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This 8283 change dynamically detects and repairs this problem. Provides 8284 compatibility 8285 with MS ACPI. BZ 6859 8286 8287 Simplified the internal ACPI hardware interfaces to eliminate the locking 8288 flag parameter from Register Read/Write. Added a new external interface, 8289 AcpiGetRegisterUnlocked. 8290 8291 Fixed a problem where the invocation of a GPE control method could hang. 8292 This 8293 was a regression introduced in 20080514. The new method argument count 8294 validation mechanism can enter an infinite loop when a GPE method is 8295 dispatched. Problem fixed by removing the obsolete code that passed GPE 8296 block 8297 information to the notify handler via the control method parameter 8298 pointer. 8299 8300 Fixed a problem where the _SST execution status was incorrectly returned 8301 to 8302 the caller of AcpiEnterSleepStatePrep. This was a regression introduced 8303 in 8304 20080514. _SST is optional and a NOT_FOUND exception should never be 8305 returned. BZ 716 8306 8307 Fixed a problem where a deleted object could be accessed from within the 8308 AML 8309 parser. This was a regression introduced in version 20080123 as a fix for 8310 the 8311 Unload operator. Lin Ming. BZ 10669 8312 8313 Cleaned up the debug operand dump mechanism. Eliminated unnecessary 8314 operands 8315 and eliminated the use of a negative index in a loop. Operands are now 8316 displayed in the correct order, not backwards. This also fixes a 8317 regression 8318 introduced in 20080514 on 64-bit systems where the elimination of 8319 ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ 8320 715 8321 8322 Fixed a possible memory leak in EvPciConfigRegionSetup where the error 8323 exit 8324 path did not delete a locally allocated structure. 8325 8326 Updated definitions for the DMAR and SRAT tables to synchronize with the 8327 current specifications. Includes disassembler support. 8328 8329 Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect 8330 loop termination value was used. Loop terminated on iteration early, 8331 missing 8332 one mutex. Linn Crosetto 8333 8334 Example Code and Data Size: These are the sizes for the OS-independent 8335 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8336 debug version of the code includes the debug output trace mechanism and 8337 has a 8338 much larger code and data size. 8339 8340 Previous Release: 8341 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 8342 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 8343 Current Release: 8344 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 8345 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 8346 8347 2) iASL Compiler/Disassembler and Tools: 8348 8349 Disassembler: Implemented support for EisaId() within _CID objects. Now 8350 disassemble integer _CID objects back to EisaId invocations, including 8351 multiple integers within _CID packages. Includes single-step support for 8352 debugger also. 8353 8354 Disassembler: Added support for DMAR and SRAT table definition changes. 8355 8356 ---------------------------------------- 8357 14 May 2008. Summary of changes for version 20080514: 8358 8359 1) ACPI CA Core Subsystem: 8360 8361 Fixed a problem where GPEs were enabled too early during the ACPICA 8362 initialization. This could lead to "handler not installed" errors on some 8363 machines. Moved GPE enable until after _REG/_STA/_INI methods are run. 8364 This 8365 ensures that all operation regions and devices throughout the namespace 8366 have 8367 been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916. 8368 8369 Implemented a change to the enter sleep code. Moved execution of the _GTS 8370 method to just before setting sleep enable bit. The execution was moved 8371 from 8372 AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed 8373 immediately before the SLP_EN bit is set, as per the ACPI specification. 8374 Luming Yu, BZ 1653. 8375 8376 Implemented a fix to disable unknown GPEs (2nd version). Now always 8377 disable 8378 the GPE, even if ACPICA thinks that that it is already disabled. It is 8379 possible that the AML or some other code has enabled the GPE unbeknownst 8380 to 8381 the ACPICA code. 8382 8383 Fixed a problem with the Field operator where zero-length fields would 8384 return 8385 an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length 8386 ASL 8387 field declarations in Field(), BankField(), and IndexField(). BZ 10606. 8388 8389 Implemented a fix for the Load operator, now load the table at the 8390 namespace 8391 root. This reverts a change introduced in version 20071019. The table is 8392 now 8393 loaded at the namespace root even though this goes against the ACPI 8394 specification. This provides compatibility with other ACPI 8395 implementations. 8396 The ACPI specification will be updated to reflect this in ACPI 4.0. Lin 8397 Ming. 8398 8399 Fixed a problem where ACPICA would not Load() tables with unusual 8400 signatures. 8401 Now ignore ACPI table signature for Load() operator. Only "SSDT" is 8402 acceptable to the ACPI spec, but tables are seen with OEMx and null sigs. 8403 Therefore, signature validation is worthless. Apparently MS ACPI accepts 8404 such 8405 signatures, ACPICA must be compatible. BZ 10454. 8406 8407 Fixed a possible negative array index in AcpiUtValidateException. Added 8408 NULL 8409 fields to the exception string arrays to eliminate a -1 subtraction on 8410 the 8411 SubStatus field. 8412 8413 Updated the debug tracking macros to reduce overall code and data size. 8414 Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings 8415 instead of pointers to static strings. Jan Beulich and Bob Moore. 8416 8417 Implemented argument count checking in control method invocation via 8418 AcpiEvaluateObject. Now emit an error if too few arguments, warning if 8419 too 8420 many. This applies only to extern programmatic control method execution, 8421 not 8422 method-to-method calls within the AML. Lin Ming. 8423 8424 Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is 8425 no 8426 longer needed, especially with the removal of 16-bit support. It was 8427 replaced 8428 mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64 8429 bit 8430 on 8431 32/64-bit platforms is required. 8432 8433 Added the C const qualifier for appropriate string constants -- mostly 8434 MODULE_NAME and printf format strings. Jan Beulich. 8435 8436 Example Code and Data Size: These are the sizes for the OS-independent 8437 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8438 debug version of the code includes the debug output trace mechanism and 8439 has a 8440 much larger code and data size. 8441 8442 Previous Release: 8443 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 8444 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 8445 Current Release: 8446 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 8447 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 8448 8449 2) iASL Compiler/Disassembler and Tools: 8450 8451 Implemented ACPI table revision ID validation in the disassembler. Zero 8452 is 8453 always invalid. For DSDTs, the ID controls the interpreter integer width. 8454 1 8455 means 32-bit and this is unusual. 2 or greater is 64-bit. 8456 8457 ---------------------------------------- 8458 21 March 2008. Summary of changes for version 20080321: 8459 8460 1) ACPI CA Core Subsystem: 8461 8462 Implemented an additional change to the GPE support in order to suppress 8463 spurious or stray GPEs. The AcpiEvDisableGpe function will now 8464 permanently 8465 disable incoming GPEs that are neither enabled nor disabled -- meaning 8466 that 8467 the GPE is unknown to the system. This should prevent future interrupt 8468 floods 8469 from that GPE. BZ 6217 (Zhang Rui) 8470 8471 Fixed a problem where NULL package elements were not returned to the 8472 AcpiEvaluateObject interface correctly. The element was simply ignored 8473 instead of returning a NULL ACPI_OBJECT package element, potentially 8474 causing 8475 a buffer overflow and/or confusing the caller who expected a fixed number 8476 of 8477 elements. BZ 10132 (Lin Ming, Bob Moore) 8478 8479 Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word, 8480 Dword, 8481 Qword), Field, BankField, and IndexField operators when invoked from 8482 inside 8483 an executing control method. In this case, these operators created 8484 namespace 8485 nodes that were incorrectly left marked as permanent nodes instead of 8486 temporary nodes. This could cause a problem if there is race condition 8487 between an exiting control method and a running namespace walk. (Reported 8488 by 8489 Linn Crosetto) 8490 8491 Fixed a problem where the CreateField and CreateXXXField operators would 8492 incorrectly allow duplicate names (the name of the field) with no 8493 exception 8494 generated. 8495 8496 Implemented several changes for Notify handling. Added support for new 8497 Notify 8498 values (ACPI 2.0+) and improved the Notify debug output. Notify on 8499 PowerResource objects is no longer allowed, as per the ACPI 8500 specification. 8501 (Bob Moore, Zhang Rui) 8502 8503 All Reference Objects returned via the AcpiEvaluateObject interface are 8504 now 8505 marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved 8506 for 8507 NULL objects - either NULL package elements or unresolved named 8508 references. 8509 8510 Fixed a problem where an extraneous debug message was produced for 8511 package 8512 objects (when debugging enabled). The message "Package List length larger 8513 than NumElements count" is now produced in the correct case, and is now 8514 an 8515 error message rather than a debug message. Added a debug message for the 8516 opposite case, where NumElements is larger than the Package List (the 8517 package 8518 will be padded out with NULL elements as per the ACPI spec.) 8519 8520 Implemented several improvements for the output of the ASL "Debug" object 8521 to 8522 clarify and keep all data for a given object on one output line. 8523 8524 Fixed two size calculation issues with the variable-length Start 8525 Dependent 8526 resource descriptor. 8527 8528 Example Code and Data Size: These are the sizes for the OS-independent 8529 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8530 debug version of the code includes the debug output trace mechanism and 8531 has 8532 a much larger code and data size. 8533 8534 Previous Release: 8535 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 8536 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 8537 Current Release: 8538 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 8539 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 8540 8541 2) iASL Compiler/Disassembler and Tools: 8542 8543 Fixed a problem with the use of the Switch operator where execution of 8544 the 8545 containing method by multiple concurrent threads could cause an 8546 AE_ALREADY_EXISTS exception. This is caused by the fact that there is no 8547 actual Switch opcode, it must be simulated with local named temporary 8548 variables and if/else pairs. The solution chosen was to mark any method 8549 that 8550 uses Switch as Serialized, thus preventing multiple thread entries. BZ 8551 469. 8552 8553 ---------------------------------------- 8554 13 February 2008. Summary of changes for version 20080213: 8555 8556 1) ACPI CA Core Subsystem: 8557 8558 Implemented another MS compatibility design change for GPE/Notify 8559 handling. 8560 GPEs are now cleared/enabled asynchronously to allow all pending notifies 8561 to 8562 complete first. It is expected that the OSL will queue the enable request 8563 behind all pending notify requests (may require changes to the local host 8564 OSL 8565 in AcpiOsExecute). Alexey Starikovskiy. 8566 8567 Fixed a problem where buffer and package objects passed as arguments to a 8568 control method via the external AcpiEvaluateObject interface could cause 8569 an 8570 AE_AML_INTERNAL exception depending on the order and type of operators 8571 executed by the target control method. 8572 8573 Fixed a problem where resource descriptor size optimization could cause a 8574 problem when a _CRS resource template is passed to a _SRS method. The 8575 _SRS 8576 resource template must use the same descriptors (with the same size) as 8577 returned from _CRS. This change affects the following resource 8578 descriptors: 8579 IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ 8580 9487) 8581 8582 Fixed a problem where a CopyObject to RegionField, BankField, and 8583 IndexField 8584 objects did not perform an implicit conversion as it should. These types 8585 must 8586 retain their initial type permanently as per the ACPI specification. 8587 However, 8588 a CopyObject to all other object types should not perform an implicit 8589 conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388 8590 8591 Fixed a problem with the AcpiGetDevices interface where the mechanism to 8592 match device CIDs did not examine the entire list of available CIDs, but 8593 instead aborted on the first non-matching CID. Andrew Patterson. 8594 8595 Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro 8596 was 8597 inadvertently changed to return a 16-bit value instead of a 32-bit value, 8598 truncating the upper dword of a 64-bit value. This macro is only used to 8599 display debug output, so no incorrect calculations were made. Also, 8600 reimplemented the macro so that a 64-bit shift is not performed by 8601 inefficient compilers. 8602 8603 Added missing va_end statements that should correspond with each va_start 8604 statement. 8605 8606 Example Code and Data Size: These are the sizes for the OS-independent 8607 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8608 debug version of the code includes the debug output trace mechanism and 8609 has 8610 a much larger code and data size. 8611 8612 Previous Release: 8613 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 8614 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 8615 Current Release: 8616 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 8617 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 8618 8619 2) iASL Compiler/Disassembler and Tools: 8620 8621 Implemented full disassembler support for the following new ACPI tables: 8622 BERT, EINJ, and ERST. Implemented partial disassembler support for the 8623 complicated HEST table. These tables support the Windows Hardware Error 8624 Architecture (WHEA). 8625 8626 ---------------------------------------- 8627 23 January 2008. Summary of changes for version 20080123: 8628 8629 1) ACPI CA Core Subsystem: 8630 8631 Added the 2008 copyright to all module headers and signons. This affects 8632 virtually every file in the ACPICA core subsystem, the iASL compiler, and 8633 the tools/utilities. 8634 8635 Fixed a problem with the SizeOf operator when used with Package and 8636 Buffer 8637 objects. These objects have deferred execution for some arguments, and 8638 the 8639 execution is now completed before the SizeOf is executed. This problem 8640 caused 8641 unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore) 8642 BZ 8643 9558 8644 8645 Implemented an enhancement to the interpreter "slack mode". In the 8646 absence 8647 of 8648 an explicit return or an implicitly returned object from the last 8649 executed 8650 opcode, a control method will now implicitly return an integer of value 0 8651 for 8652 Microsoft compatibility. (Lin Ming) BZ 392 8653 8654 Fixed a problem with the Load operator where an exception was not 8655 returned 8656 in 8657 the case where the table is already loaded. (Lin Ming) BZ 463 8658 8659 Implemented support for the use of DDBHandles as an Indexed Reference, as 8660 per 8661 the ACPI spec. (Lin Ming) BZ 486 8662 8663 Implemented support for UserTerm (Method invocation) for the Unload 8664 operator 8665 as per the ACPI spec. (Lin Ming) BZ 580 8666 8667 Fixed a problem with the LoadTable operator where the OemId and 8668 OemTableId 8669 input strings could cause unexpected failures if they were shorter than 8670 the 8671 maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576 8672 8673 Implemented support for UserTerm (Method invocation) for the Unload 8674 operator 8675 as per the ACPI spec. (Lin Ming) BZ 580 8676 8677 Implemented header file support for new ACPI tables - BERT, ERST, EINJ, 8678 HEST, 8679 IBFT, UEFI, WDAT. Disassembler support is forthcoming. 8680 8681 Example Code and Data Size: These are the sizes for the OS-independent 8682 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8683 debug version of the code includes the debug output trace mechanism and 8684 has 8685 a much larger code and data size. 8686 8687 Previous Release: 8688 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 8689 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 8690 Current Release: 8691 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 8692 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 8693 8694 2) iASL Compiler/Disassembler and Tools: 8695 8696 Implemented support in the disassembler for checksum validation on 8697 incoming 8698 binary DSDTs and SSDTs. If incorrect, a message is displayed within the 8699 table 8700 header dump at the start of the disassembly. 8701 8702 Implemented additional debugging information in the namespace listing 8703 file 8704 created during compilation. In addition to the namespace hierarchy, the 8705 full 8706 pathname to each namespace object is displayed. 8707 8708 Fixed a problem with the disassembler where invalid ACPI tables could 8709 cause 8710 faults or infinite loops. 8711 8712 Fixed an unexpected parse error when using the optional "parameter types" 8713 list in a control method declaration. (Lin Ming) BZ 397 8714 8715 Fixed a problem where two External declarations with the same name did 8716 not 8717 cause an error (Lin Ming) BZ 509 8718 8719 Implemented support for full TermArgs (adding Argx, Localx and method 8720 invocation) for the ParameterData parameter to the LoadTable operator. 8721 (Lin 8722 Ming) BZ 583,587 8723 8724 ---------------------------------------- 8725 19 December 2007. Summary of changes for version 20071219: 8726 8727 1) ACPI CA Core Subsystem: 8728 8729 Implemented full support for deferred execution for the TermArg string 8730 arguments for DataTableRegion. This enables forward references and full 8731 operand resolution for the three string arguments. Similar to 8732 OperationRegion 8733 deferred argument execution.) Lin Ming. BZ 430 8734 8735 Implemented full argument resolution support for the BankValue argument 8736 to 8737 BankField. Previously, only constants were supported, now any TermArg may 8738 be 8739 used. Lin Ming BZ 387, 393 8740 8741 Fixed a problem with AcpiGetDevices where the search of a branch of the 8742 device tree could be terminated prematurely. In accordance with the ACPI 8743 specification, the search down the current branch is terminated if a 8744 device 8745 is both not present and not functional (instead of just not present.) 8746 Yakui 8747 Zhao. 8748 8749 Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly 8750 if 8751 the underlying AML code changed the GPE enable registers. Now, any 8752 unknown 8753 incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately 8754 disabled 8755 instead of simply ignored. Rui Zhang. 8756 8757 Fixed a problem with Index Fields where the Index register was 8758 incorrectly 8759 limited to a maximum of 32 bits. Now any size may be used. 8760 8761 Fixed a couple memory leaks associated with "implicit return" objects 8762 when 8763 the AML Interpreter slack mode is enabled. Lin Ming BZ 349 8764 8765 Example Code and Data Size: These are the sizes for the OS-independent 8766 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8767 debug version of the code includes the debug output trace mechanism and 8768 has 8769 a much larger code and data size. 8770 8771 Previous Release: 8772 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 8773 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 8774 Current Release: 8775 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 8776 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 8777 8778 ---------------------------------------- 8779 14 November 2007. Summary of changes for version 20071114: 8780 8781 1) ACPI CA Core Subsystem: 8782 8783 Implemented event counters for each of the Fixed Events, the ACPI SCI 8784 (interrupt) itself, and control methods executed. Named 8785 AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively. 8786 These 8787 should be useful for debugging and statistics. 8788 8789 Implemented a new external interface, AcpiGetStatistics, to retrieve the 8790 contents of the various event counters. Returns the current values for 8791 AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and 8792 AcpiMethodCount. The interface can be expanded in the future if new 8793 counters 8794 are added. Device drivers should use this interface rather than access 8795 the 8796 counters directly. 8797 8798 Fixed a problem with the FromBCD and ToBCD operators. With some 8799 compilers, 8800 the ShortDivide function worked incorrectly, causing problems with the 8801 BCD 8802 functions with large input values. A truncation from 64-bit to 32-bit 8803 inadvertently occurred. Internal BZ 435. Lin Ming 8804 8805 Fixed a problem with Index references passed as method arguments. 8806 References 8807 passed as arguments to control methods were dereferenced immediately 8808 (before 8809 control was passed to the called method). The references are now 8810 correctly 8811 passed directly to the called method. BZ 5389. Lin Ming 8812 8813 Fixed a problem with CopyObject used in conjunction with the Index 8814 operator. 8815 The reference was incorrectly dereferenced before the copy. The reference 8816 is 8817 now correctly copied. BZ 5391. Lin Ming 8818 8819 Fixed a problem with Control Method references within Package objects. 8820 These 8821 references are now correctly generated. This completes the package 8822 construction overhaul that began in version 20071019. 8823 8824 Example Code and Data Size: These are the sizes for the OS-independent 8825 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8826 debug version of the code includes the debug output trace mechanism and 8827 has 8828 a much larger code and data size. 8829 8830 Previous Release: 8831 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 8832 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 8833 Current Release: 8834 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 8835 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 8836 8837 8838 2) iASL Compiler/Disassembler and Tools: 8839 8840 The AcpiExec utility now installs handlers for all of the predefined 8841 Operation Region types. New types supported are: PCI_Config, CMOS, and 8842 PCIBARTarget. 8843 8844 Fixed a problem with the 64-bit version of AcpiExec where the extended 8845 (64- 8846 bit) address fields for the DSDT and FACS within the FADT were not being 8847 used, causing truncation of the upper 32-bits of these addresses. Lin 8848 Ming 8849 and Bob Moore 8850 8851 ---------------------------------------- 8852 19 October 2007. Summary of changes for version 20071019: 8853 8854 1) ACPI CA Core Subsystem: 8855 8856 Fixed a problem with the Alias operator when the target of the alias is a 8857 named ASL operator that opens a new scope -- Scope, Device, 8858 PowerResource, 8859 Processor, and ThermalZone. In these cases, any children of the original 8860 operator could not be accessed via the alias, potentially causing 8861 unexpected 8862 AE_NOT_FOUND exceptions. (BZ 9067) 8863 8864 Fixed a problem with the Package operator where all named references were 8865 created as object references and left otherwise unresolved. According to 8866 the 8867 ACPI specification, a Package can only contain Data Objects or references 8868 to 8869 control methods. The implication is that named references to Data Objects 8870 (Integer, Buffer, String, Package, BufferField, Field) should be resolved 8871 immediately upon package creation. This is the approach taken with this 8872 change. References to all other named objects (Methods, Devices, Scopes, 8873 etc.) are all now properly created as reference objects. (BZ 5328) 8874 8875 Reverted a change to Notify handling that was introduced in version 8876 20070508. This version changed the Notify handling from asynchronous to 8877 fully synchronous (Device driver Notify handling with respect to the 8878 Notify 8879 ASL operator). It was found that this change caused more problems than it 8880 solved and was removed by most users. 8881 8882 Fixed a problem with the Increment and Decrement operators where the type 8883 of 8884 the target object could be unexpectedly and incorrectly changed. (BZ 353) 8885 Lin Ming. 8886 8887 Fixed a problem with the Load and LoadTable operators where the table 8888 location within the namespace was ignored. Instead, the table was always 8889 loaded into the root or current scope. Lin Ming. 8890 8891 Fixed a problem with the Load operator when loading a table from a buffer 8892 object. The input buffer was prematurely zeroed and/or deleted. (BZ 577) 8893 8894 Fixed a problem with the Debug object where a store of a DdbHandle 8895 reference 8896 object to the Debug object could cause a fault. 8897 8898 Added a table checksum verification for the Load operator, in the case 8899 where 8900 the load is from a buffer. (BZ 578). 8901 8902 Implemented additional parameter validation for the LoadTable operator. 8903 The 8904 length of the input strings SignatureString, OemIdString, and OemTableId 8905 are 8906 now checked for maximum lengths. (BZ 582) Lin Ming. 8907 8908 Example Code and Data Size: These are the sizes for the OS-independent 8909 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8910 debug version of the code includes the debug output trace mechanism and 8911 has 8912 a much larger code and data size. 8913 8914 Previous Release: 8915 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 8916 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 8917 Current Release: 8918 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 8919 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 8920 8921 8922 2) iASL Compiler/Disassembler: 8923 8924 Fixed a problem where if a single file was specified and the file did not 8925 exist, no error message was emitted. (Introduced with wildcard support in 8926 version 20070917.) 8927 8928 ---------------------------------------- 8929 19 September 2007. Summary of changes for version 20070919: 8930 8931 1) ACPI CA Core Subsystem: 8932 8933 Designed and implemented new external interfaces to install and remove 8934 handlers for ACPI table-related events. Current events that are defined 8935 are 8936 LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as 8937 they are dynamically loaded and unloaded. See AcpiInstallTableHandler and 8938 AcpiRemoveTableHandler. (Lin Ming and Bob Moore) 8939 8940 Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag 8941 (acpi_serialized option on Linux) could cause some systems to hang during 8942 initialization. (Bob Moore) BZ 8171 8943 8944 Fixed a problem where objects of certain types (Device, ThermalZone, 8945 Processor, PowerResource) can be not found if they are declared and 8946 referenced from within the same control method (Lin Ming) BZ 341 8947 8948 Example Code and Data Size: These are the sizes for the OS-independent 8949 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8950 debug version of the code includes the debug output trace mechanism and 8951 has 8952 a much larger code and data size. 8953 8954 Previous Release: 8955 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 8956 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 8957 Current Release: 8958 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 8959 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 8960 8961 8962 2) iASL Compiler/Disassembler: 8963 8964 Implemented support to allow multiple files to be compiled/disassembled 8965 in 8966 a 8967 single invocation. This includes command line wildcard support for both 8968 the 8969 Windows and Unix versions of the compiler. This feature simplifies the 8970 disassembly and compilation of multiple ACPI tables in a single 8971 directory. 8972 8973 ---------------------------------------- 8974 08 May 2007. Summary of changes for version 20070508: 8975 8976 1) ACPI CA Core Subsystem: 8977 8978 Implemented a Microsoft compatibility design change for the handling of 8979 the 8980 Notify AML operator. Previously, notify handlers were dispatched and 8981 executed completely asynchronously in a deferred thread. The new design 8982 still executes the notify handlers in a different thread, but the 8983 original 8984 thread that executed the Notify() now waits at a synchronization point 8985 for 8986 the notify handler to complete. Some machines depend on a synchronous 8987 Notify 8988 operator in order to operate correctly. 8989 8990 Implemented support to allow Package objects to be passed as method 8991 arguments to the external AcpiEvaluateObject interface. Previously, this 8992 would return the AE_NOT_IMPLEMENTED exception. This feature had not been 8993 implemented since there were no reserved control methods that required it 8994 until recently. 8995 8996 Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs 8997 that 8998 contained invalid non-zero values in reserved fields could cause later 8999 failures because these fields have meaning in later revisions of the 9000 FADT. 9001 For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The 9002 fields 9003 are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.) 9004 9005 Fixed a problem where the Global Lock handle was not properly updated if 9006 a 9007 thread that acquired the Global Lock via executing AML code then 9008 attempted 9009 to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by 9010 Joe 9011 Liu. 9012 9013 Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list 9014 could be corrupted if the interrupt being removed was at the head of the 9015 list. Reported by Linn Crosetto. 9016 9017 Example Code and Data Size: These are the sizes for the OS-independent 9018 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9019 debug version of the code includes the debug output trace mechanism and 9020 has 9021 a much larger code and data size. 9022 9023 Previous Release: 9024 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 9025 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 9026 Current Release: 9027 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 9028 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 9029 9030 ---------------------------------------- 9031 20 March 2007. Summary of changes for version 20070320: 9032 9033 1) ACPI CA Core Subsystem: 9034 9035 Implemented a change to the order of interpretation and evaluation of AML 9036 operand objects within the AML interpreter. The interpreter now evaluates 9037 operands in the order that they appear in the AML stream (and the 9038 corresponding ASL code), instead of in the reverse order (after the 9039 entire 9040 operand list has been parsed). The previous behavior caused several 9041 subtle 9042 incompatibilities with the Microsoft AML interpreter as well as being 9043 somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov. 9044 9045 Implemented a change to the ACPI Global Lock support. All interfaces to 9046 the 9047 global lock now allow the same thread to acquire the lock multiple times. 9048 This affects the AcpiAcquireGlobalLock external interface to the global 9049 lock 9050 as well as the internal use of the global lock to support AML fields -- a 9051 control method that is holding the global lock can now simultaneously 9052 access 9053 AML fields that require global lock protection. Previously, in both 9054 cases, 9055 this would have resulted in an AE_ALREADY_ACQUIRED exception. The change 9056 to 9057 AcpiAcquireGlobalLock is of special interest to drivers for the Embedded 9058 Controller. There is no change to the behavior of the AML Acquire 9059 operator, 9060 as this can already be used to acquire a mutex multiple times by the same 9061 thread. BZ 8066. With assistance from Alexey Starikovskiy. 9062 9063 Fixed a problem where invalid objects could be referenced in the AML 9064 Interpreter after error conditions. During operand evaluation, ensure 9065 that 9066 the internal "Return Object" field is cleared on error and only valid 9067 pointers are stored there. Caused occasional access to deleted objects 9068 that 9069 resulted in "large reference count" warning messages. Valery Podrezov. 9070 9071 Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur 9072 on 9073 deeply nested control method invocations. BZ 7873, local BZ 487. Valery 9074 Podrezov. 9075 9076 Fixed an internal problem with the handling of result objects on the 9077 interpreter result stack. BZ 7872. Valery Podrezov. 9078 9079 Removed obsolete code that handled the case where AML_NAME_OP is the 9080 target 9081 of a reference (Reference.Opcode). This code was no longer necessary. BZ 9082 7874. Valery Podrezov. 9083 9084 Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This 9085 was 9086 a 9087 remnant from the previously discontinued 16-bit support. 9088 9089 Example Code and Data Size: These are the sizes for the OS-independent 9090 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9091 debug version of the code includes the debug output trace mechanism and 9092 has 9093 a much larger code and data size. 9094 9095 Previous Release: 9096 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 9097 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 9098 Current Release: 9099 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 9100 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 9101 9102 ---------------------------------------- 9103 26 January 2007. Summary of changes for version 20070126: 9104 9105 1) ACPI CA Core Subsystem: 9106 9107 Added the 2007 copyright to all module headers and signons. This affects 9108 virtually every file in the ACPICA core subsystem, the iASL compiler, and 9109 the utilities. 9110 9111 Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable 9112 during a table load. A bad pointer was passed in the case where the DSDT 9113 is 9114 overridden, causing a fault in this case. 9115 9116 Example Code and Data Size: These are the sizes for the OS-independent 9117 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9118 debug version of the code includes the debug output trace mechanism and 9119 has 9120 a much larger code and data size. 9121 9122 Previous Release: 9123 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 9124 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 9125 Current Release: 9126 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 9127 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 9128 9129 ---------------------------------------- 9130 15 December 2006. Summary of changes for version 20061215: 9131 9132 1) ACPI CA Core Subsystem: 9133 9134 Support for 16-bit ACPICA has been completely removed since it is no 9135 longer 9136 necessary and it clutters the code. All 16-bit macros, types, and 9137 conditional compiles have been removed, cleaning up and simplifying the 9138 code 9139 across the entire subsystem. DOS support is no longer needed since the 9140 bootable Linux firmware kit is now available. 9141 9142 The handler for the Global Lock is now removed during AcpiTerminate to 9143 enable a clean subsystem restart, via the implementation of the 9144 AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz, 9145 HP) 9146 9147 Implemented enhancements to the multithreading support within the 9148 debugger 9149 to enable improved multithreading debugging and evaluation of the 9150 subsystem. 9151 (Valery Podrezov) 9152 9153 Debugger: Enhanced the Statistics/Memory command to emit the total 9154 (maximum) 9155 memory used during the execution, as well as the maximum memory consumed 9156 by 9157 each of the various object types. (Valery Podrezov) 9158 9159 Example Code and Data Size: These are the sizes for the OS-independent 9160 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9161 debug version of the code includes the debug output trace mechanism and 9162 has 9163 a much larger code and data size. 9164 9165 Previous Release: 9166 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 9167 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 9168 Current Release: 9169 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 9170 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 9171 9172 9173 2) iASL Compiler/Disassembler and Tools: 9174 9175 AcpiExec: Implemented a new option (-m) to display full memory use 9176 statistics upon subsystem/program termination. (Valery Podrezov) 9177 9178 ---------------------------------------- 9179 09 November 2006. Summary of changes for version 20061109: 9180 9181 1) ACPI CA Core Subsystem: 9182 9183 Optimized the Load ASL operator in the case where the source operand is 9184 an 9185 operation region. Simply map the operation region memory, instead of 9186 performing a bytewise read. (Region must be of type SystemMemory, see 9187 below.) 9188 9189 Fixed the Load ASL operator for the case where the source operand is a 9190 region field. A buffer object is also allowed as the source operand. BZ 9191 480 9192 9193 Fixed a problem where the Load ASL operator allowed the source operand to 9194 be 9195 an operation region of any type. It is now restricted to regions of type 9196 SystemMemory, as per the ACPI specification. BZ 481 9197 9198 Additional cleanup and optimizations for the new Table Manager code. 9199 9200 AcpiEnable will now fail if all of the required ACPI tables are not 9201 loaded 9202 (FADT, FACS, DSDT). BZ 477 9203 9204 Added #pragma pack(8/4) to acobject.h to ensure that the structures in 9205 this 9206 header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been 9207 manually optimized to be aligned and will not work if it is byte-packed. 9208 9209 Example Code and Data Size: These are the sizes for the OS-independent 9210 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9211 debug version of the code includes the debug output trace mechanism and 9212 has 9213 a much larger code and data size. 9214 9215 Previous Release: 9216 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 9217 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 9218 Current Release: 9219 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 9220 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 9221 9222 9223 2) iASL Compiler/Disassembler and Tools: 9224 9225 Fixed a problem where the presence of the _OSI predefined control method 9226 within complex expressions could cause an internal compiler error. 9227 9228 AcpiExec: Implemented full region support for multiple address spaces. 9229 SpaceId is now part of the REGION object. BZ 429 9230 9231 ---------------------------------------- 9232 11 October 2006. Summary of changes for version 20061011: 9233 9234 1) ACPI CA Core Subsystem: 9235 9236 Completed an AML interpreter performance enhancement for control method 9237 execution. Previously a 2-pass parse/execution, control methods are now 9238 completely parsed and executed in a single pass. This improves overall 9239 interpreter performance by ~25%, reduces code size, and reduces CPU stack 9240 use. (Valery Podrezov + interpreter changes in version 20051202 that 9241 eliminated namespace loading during the pass one parse.) 9242 9243 Implemented _CID support for PCI Root Bridge detection. If the _HID does 9244 not 9245 match the predefined PCI Root Bridge IDs, the _CID list (if present) is 9246 now 9247 obtained and also checked for an ID match. 9248 9249 Implemented additional support for the PCI _ADR execution: upsearch until 9250 a 9251 device scope is found before executing _ADR. This allows PCI_Config 9252 operation regions to be declared locally within control methods 9253 underneath 9254 PCI device objects. 9255 9256 Fixed a problem with a possible race condition between threads executing 9257 AcpiWalkNamespace and the AML interpreter. This condition was removed by 9258 modifying AcpiWalkNamespace to (by default) ignore all temporary 9259 namespace 9260 entries created during any concurrent control method execution. An 9261 additional namespace race condition is known to exist between 9262 AcpiWalkNamespace and the Load/Unload ASL operators and is still under 9263 investigation. 9264 9265 Restructured the AML ParseLoop function, breaking it into several 9266 subfunctions in order to reduce CPU stack use and improve 9267 maintainability. 9268 (Mikhail Kouzmich) 9269 9270 AcpiGetHandle: Fix for parameter validation to detect invalid 9271 combinations 9272 of prefix handle and pathname. BZ 478 9273 9274 Example Code and Data Size: These are the sizes for the OS-independent 9275 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9276 debug version of the code includes the debug output trace mechanism and 9277 has 9278 a much larger code and data size. 9279 9280 Previous Release: 9281 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 9282 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 9283 Current Release: 9284 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 9285 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 9286 9287 2) iASL Compiler/Disassembler and Tools: 9288 9289 Ported the -g option (get local ACPI tables) to the new ACPICA Table 9290 Manager 9291 to restore original behavior. 9292 9293 ---------------------------------------- 9294 27 September 2006. Summary of changes for version 20060927: 9295 9296 1) ACPI CA Core Subsystem: 9297 9298 Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister. 9299 These functions now use a spinlock for mutual exclusion and the interrupt 9300 level indication flag is not needed. 9301 9302 Fixed a problem with the Global Lock where the lock could appear to be 9303 obtained before it is actually obtained. The global lock semaphore was 9304 inadvertently created with one unit instead of zero units. (BZ 464) 9305 Fiodor 9306 Suietov. 9307 9308 Fixed a possible memory leak and fault in AcpiExResolveObjectToValue 9309 during 9310 a read from a buffer or region field. (BZ 458) Fiodor Suietov. 9311 9312 Example Code and Data Size: These are the sizes for the OS-independent 9313 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9314 debug version of the code includes the debug output trace mechanism and 9315 has 9316 a much larger code and data size. 9317 9318 Previous Release: 9319 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 9320 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 9321 Current Release: 9322 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 9323 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 9324 9325 9326 2) iASL Compiler/Disassembler and Tools: 9327 9328 Fixed a compilation problem with the pre-defined Resource Descriptor 9329 field 9330 names where an "object does not exist" error could be incorrectly 9331 generated 9332 if the parent ResourceTemplate pathname places the template within a 9333 different namespace scope than the current scope. (BZ 7212) 9334 9335 Fixed a problem where the compiler could hang after syntax errors 9336 detected 9337 in an ElseIf construct. (BZ 453) 9338 9339 Fixed a problem with the AmlFilename parameter to the DefinitionBlock() 9340 operator. An incorrect output filename was produced when this parameter 9341 was 9342 a null string (""). Now, the original input filename is used as the AML 9343 output filename, with an ".aml" extension. 9344 9345 Implemented a generic batch command mode for the AcpiExec utility 9346 (execute 9347 any AML debugger command) (Valery Podrezov). 9348 9349 ---------------------------------------- 9350 12 September 2006. Summary of changes for version 20060912: 9351 9352 1) ACPI CA Core Subsystem: 9353 9354 Enhanced the implementation of the "serialized mode" of the interpreter 9355 (enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is 9356 specified, instead of creating a serialization semaphore per control 9357 method, 9358 the interpreter lock is simply no longer released before a blocking 9359 operation during control method execution. This effectively makes the AML 9360 Interpreter single-threaded. The overhead of a semaphore per-method is 9361 eliminated. 9362 9363 Fixed a regression where an error was no longer emitted if a control 9364 method 9365 attempts to create 2 objects of the same name. This once again returns 9366 AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism 9367 that 9368 will dynamically serialize the control method to possible prevent future 9369 errors. (BZ 440) 9370 9371 Integrated a fix for a problem with PCI Express HID detection in the PCI 9372 Config Space setup procedure. (BZ 7145) 9373 9374 Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the 9375 AcpiHwInitialize function - the FADT registers are now validated when the 9376 table is loaded. 9377 9378 Added two new warnings during FADT verification - 1) if the FADT is 9379 larger 9380 than the largest known FADT version, and 2) if there is a mismatch 9381 between 9382 a 9383 32-bit block address and the 64-bit X counterpart (when both are non- 9384 zero.) 9385 9386 Example Code and Data Size: These are the sizes for the OS-independent 9387 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9388 debug version of the code includes the debug output trace mechanism and 9389 has 9390 a much larger code and data size. 9391 9392 Previous Release: 9393 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 9394 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 9395 Current Release: 9396 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 9397 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 9398 9399 9400 2) iASL Compiler/Disassembler and Tools: 9401 9402 Fixed a problem with the implementation of the Switch() operator where 9403 the 9404 temporary variable was declared too close to the actual Switch, instead 9405 of 9406 at method level. This could cause a problem if the Switch() operator is 9407 within a while loop, causing an error on the second iteration. (BZ 460) 9408 9409 Disassembler - fix for error emitted for unknown type for target of scope 9410 operator. Now, ignore it and continue. 9411 9412 Disassembly of an FADT now verifies the input FADT and reports any errors 9413 found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs. 9414 9415 Disassembly of raw data buffers with byte initialization data now 9416 prefixes 9417 each output line with the current buffer offset. 9418 9419 Disassembly of ASF! table now includes all variable-length data fields at 9420 the end of some of the subtables. 9421 9422 The disassembler now emits a comment if a buffer appears to be a 9423 ResourceTemplate, but cannot be disassembled as such because the EndTag 9424 does 9425 not appear at the very end of the buffer. 9426 9427 AcpiExec - Added the "-t" command line option to enable the serialized 9428 mode 9429 of the AML interpreter. 9430 9431 ---------------------------------------- 9432 31 August 2006. Summary of changes for version 20060831: 9433 9434 1) ACPI CA Core Subsystem: 9435 9436 Miscellaneous fixes for the Table Manager: 9437 - Correctly initialize internal common FADT for all 64-bit "X" fields 9438 - Fixed a couple table mapping issues during table load 9439 - Fixed a couple alignment issues for IA64 9440 - Initialize input array to zero in AcpiInitializeTables 9441 - Additional parameter validation for AcpiGetTable, AcpiGetTableHeader, 9442 AcpiGetTableByIndex 9443 9444 Change for GPE support: when a "wake" GPE is received, all wake GPEs are 9445 now 9446 immediately disabled to prevent the waking GPE from firing again and to 9447 prevent other wake GPEs from interrupting the wake process. 9448 9449 Added the AcpiGpeCount global that tracks the number of processed GPEs, 9450 to 9451 be used for debugging systems with a large number of ACPI interrupts. 9452 9453 Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in 9454 both the ACPICA headers and the disassembler. 9455 9456 Example Code and Data Size: These are the sizes for the OS-independent 9457 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9458 debug version of the code includes the debug output trace mechanism and 9459 has 9460 a much larger code and data size. 9461 9462 Previous Release: 9463 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 9464 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 9465 Current Release: 9466 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 9467 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 9468 9469 9470 2) iASL Compiler/Disassembler and Tools: 9471 9472 Disassembler support for the DMAR ACPI table. 9473 9474 ---------------------------------------- 9475 23 August 2006. Summary of changes for version 20060823: 9476 9477 1) ACPI CA Core Subsystem: 9478 9479 The Table Manager component has been completely redesigned and 9480 reimplemented. The new design is much simpler, and reduces the overall 9481 code 9482 and data size of the kernel-resident ACPICA by approximately 5%. Also, it 9483 is 9484 now possible to obtain the ACPI tables very early during kernel 9485 initialization, even before dynamic memory management is initialized. 9486 (Alexey Starikovskiy, Fiodor Suietov, Bob Moore) 9487 9488 Obsolete ACPICA interfaces: 9489 9490 - AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel 9491 init 9492 time). 9493 - AcpiLoadTable: Not needed. 9494 - AcpiUnloadTable: Not needed. 9495 9496 New ACPICA interfaces: 9497 9498 - AcpiInitializeTables: Must be called before the table manager can be 9499 used. 9500 - AcpiReallocateRootTable: Used to transfer the root table to dynamically 9501 allocated memory after it becomes available. 9502 - AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI 9503 tables 9504 in the RSDT/XSDT. 9505 9506 Other ACPICA changes: 9507 9508 - AcpiGetTableHeader returns the actual mapped table header, not a copy. 9509 Use 9510 AcpiOsUnmapMemory to free this mapping. 9511 - AcpiGetTable returns the actual mapped table. The mapping is managed 9512 internally and must not be deleted by the caller. Use of this interface 9513 causes no additional dynamic memory allocation. 9514 - AcpiFindRootPointer: Support for physical addressing has been 9515 eliminated, 9516 it appeared to be unused. 9517 - The interface to AcpiOsMapMemory has changed to be consistent with the 9518 other allocation interfaces. 9519 - The interface to AcpiOsGetRootPointer has changed to eliminate 9520 unnecessary 9521 parameters. 9522 - ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on 9523 64- 9524 bit platforms. Was previously 64 bits on all platforms. 9525 - The interface to the ACPI Global Lock acquire/release macros have 9526 changed 9527 slightly since ACPICA no longer keeps a local copy of the FACS with a 9528 constructed pointer to the actual global lock. 9529 9530 Porting to the new table manager: 9531 9532 - AcpiInitializeTables: Must be called once, and can be called anytime 9533 during the OS initialization process. It allows the host to specify an 9534 area 9535 of memory to be used to store the internal version of the RSDT/XSDT (root 9536 table). This allows the host to access ACPI tables before memory 9537 management 9538 is initialized and running. 9539 - AcpiReallocateRootTable: Can be called after memory management is 9540 running 9541 to copy the root table to a dynamically allocated array, freeing up the 9542 scratch memory specified in the call to AcpiInitializeTables. 9543 - AcpiSubsystemInitialize: This existing interface is independent of the 9544 Table Manager, and does not have to be called before the Table Manager 9545 can 9546 be used, it only must be called before the rest of ACPICA can be used. 9547 - ACPI Tables: Some changes have been made to the names and structure of 9548 the 9549 actbl.h and actbl1.h header files and may require changes to existing 9550 code. 9551 For example, bitfields have been completely removed because of their lack 9552 of 9553 portability across C compilers. 9554 - Update interfaces to the Global Lock acquire/release macros if local 9555 versions are used. (see acwin.h) 9556 9557 Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c 9558 9559 New files: tbfind.c 9560 9561 Example Code and Data Size: These are the sizes for the OS-independent 9562 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9563 debug version of the code includes the debug output trace mechanism and 9564 has 9565 a much larger code and data size. 9566 9567 Previous Release: 9568 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 9569 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 9570 Current Release: 9571 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 9572 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 9573 9574 9575 2) iASL Compiler/Disassembler and Tools: 9576 9577 No changes for this release. 9578 9579 ---------------------------------------- 9580 21 July 2006. Summary of changes for version 20060721: 9581 9582 1) ACPI CA Core Subsystem: 9583 9584 The full source code for the ASL test suite used to validate the iASL 9585 compiler and the ACPICA core subsystem is being released with the ACPICA 9586 source for the first time. The source is contained in a separate package 9587 and 9588 consists of over 1100 files that exercise all ASL/AML operators. The 9589 package 9590 should appear on the Intel/ACPI web site shortly. (Valery Podrezov, 9591 Fiodor 9592 Suietov) 9593 9594 Completed a new design and implementation for support of the ACPI Global 9595 Lock. On the OS side, the global lock is now treated as a standard AML 9596 mutex. Previously, multiple OS threads could "acquire" the global lock 9597 simultaneously. However, this could cause the BIOS to be starved out of 9598 the 9599 lock - especially in cases such as the Embedded Controller driver where 9600 there is a tight coupling between the OS and the BIOS. 9601 9602 Implemented an optimization for the ACPI Global Lock interrupt mechanism. 9603 The Global Lock interrupt handler no longer queues the execution of a 9604 separate thread to signal the global lock semaphore. Instead, the 9605 semaphore 9606 is signaled directly from the interrupt handler. 9607 9608 Implemented support within the AML interpreter for package objects that 9609 contain a larger AML length (package list length) than the package 9610 element 9611 count. In this case, the length of the package is truncated to match the 9612 package element count. Some BIOS code apparently modifies the package 9613 length 9614 on the fly, and this change supports this behavior. Provides 9615 compatibility 9616 with the MS AML interpreter. (With assistance from Fiodor Suietov) 9617 9618 Implemented a temporary fix for the BankValue parameter of a Bank Field 9619 to 9620 support all constant values, now including the Zero and One opcodes. 9621 Evaluation of this parameter must eventually be converted to a full 9622 TermArg 9623 evaluation. A not-implemented error is now returned (temporarily) for 9624 non- 9625 constant values for this parameter. 9626 9627 Fixed problem reports (Fiodor Suietov) integrated: 9628 - Fix for premature object deletion after CopyObject on Operation Region 9629 (BZ 9630 350) 9631 9632 Example Code and Data Size: These are the sizes for the OS-independent 9633 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9634 debug version of the code includes the debug output trace mechanism and 9635 has 9636 a much larger code and data size. 9637 9638 Previous Release: 9639 Non-Debug Version: 80.7K Code, 18.0K Data, 98.7K Total 9640 Debug Version: 160.9K Code, 65.1K Data, 226.0K Total 9641 Current Release: 9642 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 9643 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 9644 9645 9646 2) iASL Compiler/Disassembler and Tools: 9647 9648 No changes for this release. 9649 9650 ---------------------------------------- 9651 07 July 2006. Summary of changes for version 20060707: 9652 9653 1) ACPI CA Core Subsystem: 9654 9655 Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers 9656 that do not allow the initialization of address pointers within packed 9657 structures - even though the hardware itself may support misaligned 9658 transfers. Some of the debug data structures are packed by default to 9659 minimize size. 9660 9661 Added an error message for the case where AcpiOsGetThreadId() returns 9662 zero. 9663 A non-zero value is required by the core ACPICA code to ensure the proper 9664 operation of AML mutexes and recursive control methods. 9665 9666 The DSDT is now the only ACPI table that determines whether the AML 9667 interpreter is in 32-bit or 64-bit mode. Not really a functional change, 9668 but 9669 the hooks for per-table 32/64 switching have been removed from the code. 9670 A 9671 clarification to the ACPI specification is forthcoming in ACPI 3.0B. 9672 9673 Fixed a possible leak of an OwnerID in the error path of 9674 AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID 9675 deletion to a single place in AcpiTbUninstallTable to correct possible 9676 leaks 9677 when using the AcpiTbDeleteTablesByType interface (with assistance from 9678 Lance Ortiz.) 9679 9680 Fixed a problem with Serialized control methods where the semaphore 9681 associated with the method could be over-signaled after multiple method 9682 invocations. 9683 9684 Fixed two issues with the locking of the internal namespace data 9685 structure. 9686 Both the Unload() operator and AcpiUnloadTable interface now lock the 9687 namespace during the namespace deletion associated with the table unload 9688 (with assistance from Linn Crosetto.) 9689 9690 Fixed problem reports (Valery Podrezov) integrated: 9691 - Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426) 9692 9693 Fixed problem reports (Fiodor Suietov) integrated: 9694 - Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369) 9695 - On Address Space handler deletion, needless deactivation call (BZ 374) 9696 - AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ 9697 375) 9698 - Possible memory leak, Notify sub-objects of Processor, Power, 9699 ThermalZone 9700 (BZ 376) 9701 - AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378) 9702 - Minimum Length of RSDT should be validated (BZ 379) 9703 - AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no 9704 Handler (BZ (380) 9705 - AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type 9706 loaded 9707 (BZ 381) 9708 9709 Example Code and Data Size: These are the sizes for the OS-independent 9710 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9711 debug version of the code includes the debug output trace mechanism and 9712 has 9713 a much larger code and data size. 9714 9715 Previous Release: 9716 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 9717 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 9718 Current Release: 9719 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 9720 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 9721 9722 9723 2) iASL Compiler/Disassembler and Tools: 9724 9725 Fixed problem reports: 9726 Compiler segfault when ASL contains a long (>1024) String declaration (BZ 9727 436) 9728 9729 ---------------------------------------- 9730 23 June 2006. Summary of changes for version 20060623: 9731 9732 1) ACPI CA Core Subsystem: 9733 9734 Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This 9735 allows the type to be customized to the host OS for improved efficiency 9736 (since a spinlock is usually a very small object.) 9737 9738 Implemented support for "ignored" bits in the ACPI registers. According 9739 to 9740 the ACPI specification, these bits should be preserved when writing the 9741 registers via a read/modify/write cycle. There are 3 bits preserved in 9742 this 9743 manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11]. 9744 9745 Implemented the initial deployment of new OSL mutex interfaces. Since 9746 some 9747 host operating systems have separate mutex and semaphore objects, this 9748 feature was requested. The base code now uses mutexes (and the new mutex 9749 interfaces) wherever a binary semaphore was used previously. However, for 9750 the current release, the mutex interfaces are defined as macros to map 9751 them 9752 to the existing semaphore interfaces. Therefore, no OSL changes are 9753 required 9754 at this time. (See acpiosxf.h) 9755 9756 Fixed several problems with the support for the control method SyncLevel 9757 parameter. The SyncLevel now works according to the ACPI specification 9758 and 9759 in concert with the Mutex SyncLevel parameter, since the current 9760 SyncLevel 9761 is a property of the executing thread. Mutual exclusion for control 9762 methods 9763 is now implemented with a mutex instead of a semaphore. 9764 9765 Fixed three instances of the use of the C shift operator in the bitfield 9766 support code (exfldio.c) to avoid the use of a shift value larger than 9767 the 9768 target data width. The behavior of C compilers is undefined in this case 9769 and 9770 can cause unpredictable results, and therefore the case must be detected 9771 and 9772 avoided. (Fiodor Suietov) 9773 9774 Added an info message whenever an SSDT or OEM table is loaded dynamically 9775 via the Load() or LoadTable() ASL operators. This should improve 9776 debugging 9777 capability since it will show exactly what tables have been loaded 9778 (beyond 9779 the tables present in the RSDT/XSDT.) 9780 9781 Example Code and Data Size: These are the sizes for the OS-independent 9782 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9783 debug version of the code includes the debug output trace mechanism and 9784 has 9785 a much larger code and data size. 9786 9787 Previous Release: 9788 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 9789 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 9790 Current Release: 9791 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 9792 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 9793 9794 9795 2) iASL Compiler/Disassembler and Tools: 9796 9797 No changes for this release. 9798 9799 ---------------------------------------- 9800 08 June 2006. Summary of changes for version 20060608: 9801 9802 1) ACPI CA Core Subsystem: 9803 9804 Converted the locking mutex used for the ACPI hardware to a spinlock. 9805 This 9806 change should eliminate all problems caused by attempting to acquire a 9807 semaphore at interrupt level, and it means that all ACPICA external 9808 interfaces that directly access the ACPI hardware can be safely called 9809 from 9810 interrupt level. OSL code that implements the semaphore interfaces should 9811 be 9812 able to eliminate any workarounds for being called at interrupt level. 9813 9814 Fixed a regression introduced in 20060526 where the ACPI device 9815 initialization could be prematurely aborted with an AE_NOT_FOUND if a 9816 device 9817 did not have an optional _INI method. 9818 9819 Fixed an IndexField issue where a write to the Data Register should be 9820 limited in size to the AccessSize (width) of the IndexField itself. (BZ 9821 433, 9822 Fiodor Suietov) 9823 9824 Fixed problem reports (Valery Podrezov) integrated: 9825 - Allow store of ThermalZone objects to Debug object (BZ 5369/5370) 9826 9827 Fixed problem reports (Fiodor Suietov) integrated: 9828 - AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364) 9829 9830 Removed four global mutexes that were obsolete and were no longer being 9831 used. 9832 9833 Example Code and Data Size: These are the sizes for the OS-independent 9834 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9835 debug version of the code includes the debug output trace mechanism and 9836 has 9837 a much larger code and data size. 9838 9839 Previous Release: 9840 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 9841 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 9842 Current Release: 9843 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 9844 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 9845 9846 9847 2) iASL Compiler/Disassembler and Tools: 9848 9849 Fixed a fault when using -g option (get tables from registry) on Windows 9850 machines. 9851 9852 Fixed problem reports integrated: 9853 - Generate error if CreateField NumBits parameter is zero. (BZ 405) 9854 - Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor 9855 Suietov) 9856 - Global table revision override (-r) is ignored (BZ 413) 9857 9858 ---------------------------------------- 9859 26 May 2006. Summary of changes for version 20060526: 9860 9861 1) ACPI CA Core Subsystem: 9862 9863 Restructured, flattened, and simplified the internal interfaces for 9864 namespace object evaluation - resulting in smaller code, less CPU stack 9865 use, 9866 and fewer interfaces. (With assistance from Mikhail Kouzmich) 9867 9868 Fixed a problem with the CopyObject operator where the first parameter 9869 was 9870 not typed correctly for the parser, interpreter, compiler, and 9871 disassembler. 9872 Caused various errors and unexpected behavior. 9873 9874 Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits 9875 produced incorrect results with some C compilers. Since the behavior of C 9876 compilers when the shift value is larger than the datatype width is 9877 apparently not well defined, the interpreter now detects this condition 9878 and 9879 simply returns zero as expected in all such cases. (BZ 395) 9880 9881 Fixed problem reports (Valery Podrezov) integrated: 9882 - Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329) 9883 - Allow interpreter to handle nested method declarations (BZ 5361) 9884 9885 Fixed problem reports (Fiodor Suietov) integrated: 9886 - AcpiTerminate doesn't free debug memory allocation list objects (BZ 9887 355) 9888 - After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ 9889 356) 9890 - AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357) 9891 - Resource Manager should return AE_TYPE for non-device objects (BZ 358) 9892 - Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359) 9893 - Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360) 9894 - Incomplete cleanup branch in AcpiPsParseAml (BZ 361) 9895 - Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362) 9896 - AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ 9897 365) 9898 - Status of the Global Initialization Handler call not used (BZ 366) 9899 - Incorrect object parameter to Global Initialization Handler (BZ 367) 9900 9901 Example Code and Data Size: These are the sizes for the OS-independent 9902 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9903 debug version of the code includes the debug output trace mechanism and 9904 has 9905 a much larger code and data size. 9906 9907 Previous Release: 9908 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 9909 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 9910 Current Release: 9911 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 9912 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 9913 9914 9915 2) iASL Compiler/Disassembler and Tools: 9916 9917 Modified the parser to allow the names IO, DMA, and IRQ to be used as 9918 namespace identifiers with no collision with existing resource descriptor 9919 macro names. This provides compatibility with other ASL compilers and is 9920 most useful for disassembly/recompilation of existing tables without 9921 parse 9922 errors. (With assistance from Thomas Renninger) 9923 9924 Disassembler: fixed an incorrect disassembly problem with the 9925 DataTableRegion and CopyObject operators. Fixed a possible fault during 9926 disassembly of some Alias operators. 9927 9928 ---------------------------------------- 9929 12 May 2006. Summary of changes for version 20060512: 9930 9931 1) ACPI CA Core Subsystem: 9932 9933 Replaced the AcpiOsQueueForExecution interface with a new interface named 9934 AcpiOsExecute. The major difference is that the new interface does not 9935 have 9936 a Priority parameter, this appeared to be useless and has been replaced 9937 by 9938 a 9939 Type parameter. The Type tells the host what type of execution is being 9940 requested, such as global lock handler, notify handler, GPE handler, etc. 9941 This allows the host to queue and execute the request as appropriate for 9942 the 9943 request type, possibly using different work queues and different 9944 priorities 9945 for the various request types. This enables fixes for multithreading 9946 deadlock problems such as BZ #5534, and will require changes to all 9947 existing 9948 OS interface layers. (Alexey Starikovskiy and Bob Moore) 9949 9950 Fixed a possible memory leak associated with the support for the so- 9951 called 9952 "implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor 9953 Suietov) 9954 9955 Fixed a problem with the Load() operator where a table load from an 9956 operation region could overwrite an internal table buffer by up to 7 9957 bytes 9958 and cause alignment faults on IPF systems. (With assistance from Luming 9959 Yu) 9960 9961 Example Code and Data Size: These are the sizes for the OS-independent 9962 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9963 debug version of the code includes the debug output trace mechanism and 9964 has 9965 a much larger code and data size. 9966 9967 Previous Release: 9968 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 9969 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 9970 Current Release: 9971 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 9972 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 9973 9974 9975 9976 2) iASL Compiler/Disassembler and Tools: 9977 9978 Disassembler: Implemented support to cross reference the internal 9979 namespace 9980 and automatically generate ASL External() statements for symbols not 9981 defined 9982 within the current table being disassembled. This will simplify the 9983 disassembly and recompilation of interdependent tables such as SSDTs 9984 since 9985 these statements will no longer have to be added manually. 9986 9987 Disassembler: Implemented experimental support to automatically detect 9988 invocations of external control methods and generate appropriate 9989 External() 9990 statements. This is problematic because the AML cannot be correctly 9991 parsed 9992 until the number of arguments for each control method is known. 9993 Currently, 9994 standalone method invocations and invocations as the source operand of a 9995 Store() statement are supported. 9996 9997 Disassembler: Implemented support for the ASL pseudo-operators LNotEqual, 9998 LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()), 9999 LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code 10000 more readable and likely closer to the original ASL source. 10001 10002 ---------------------------------------- 10003 21 April 2006. Summary of changes for version 20060421: 10004 10005 1) ACPI CA Core Subsystem: 10006 10007 Removed a device initialization optimization introduced in 20051216 where 10008 the _STA method was not run unless an _INI was also present for the same 10009 device. This optimization could cause problems because it could allow 10010 _INI 10011 methods to be run within a not-present device subtree. (If a not-present 10012 device had no _INI, _STA would not be run, the not-present status would 10013 not 10014 be discovered, and the children of the device would be incorrectly 10015 traversed.) 10016 10017 Implemented a new _STA optimization where namespace subtrees that do not 10018 contain _INI are identified and ignored during device initialization. 10019 Selectively running _STA can significantly improve boot time on large 10020 machines (with assistance from Len Brown.) 10021 10022 Implemented support for the device initialization case where the returned 10023 _STA flags indicate a device not-present but functioning. In this case, 10024 _INI 10025 is not run, but the device children are examined for presence, as per the 10026 ACPI specification. 10027 10028 Implemented an additional change to the IndexField support in order to 10029 conform to MS behavior. The value written to the Index Register is not 10030 simply a byte offset, it is a byte offset in units of the access width of 10031 the parent Index Field. (Fiodor Suietov) 10032 10033 Defined and deployed a new OSL interface, AcpiOsValidateAddress. This 10034 interface is called during the creation of all AML operation regions, and 10035 allows the host OS to exert control over what addresses it will allow the 10036 AML code to access. Operation Regions whose addresses are disallowed will 10037 cause a runtime exception when they are actually accessed (will not 10038 affect 10039 or abort table loading.) See oswinxf or osunixxf for an example 10040 implementation. 10041 10042 Defined and deployed a new OSL interface, AcpiOsValidateInterface. This 10043 interface allows the host OS to match the various "optional" 10044 interface/behavior strings for the _OSI predefined control method as 10045 appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf 10046 for an example implementation. 10047 10048 Restructured and corrected various problems in the exception handling 10049 code 10050 paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod 10051 (with assistance from Takayoshi Kochi.) 10052 10053 Modified the Linux source converter to ignore quoted string literals 10054 while 10055 converting identifiers from mixed to lower case. This will correct 10056 problems 10057 with the disassembler and other areas where such strings must not be 10058 modified. 10059 10060 The ACPI_FUNCTION_* macros no longer require quotes around the function 10061 name. This allows the Linux source converter to convert the names, now 10062 that 10063 the converter ignores quoted strings. 10064 10065 Example Code and Data Size: These are the sizes for the OS-independent 10066 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 10067 debug version of the code includes the debug output trace mechanism and 10068 has 10069 a much larger code and data size. 10070 10071 Previous Release: 10072 10073 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 10074 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 10075 Current Release: 10076 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 10077 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 10078 10079 10080 2) iASL Compiler/Disassembler and Tools: 10081 10082 Implemented 3 new warnings for iASL, and implemented multiple warning 10083 levels 10084 (w2 flag). 10085 10086 1) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is 10087 not 10088 WAIT_FOREVER (0xFFFF) and the code does not examine the return value to 10089 check for the possible timeout, a warning is issued. 10090 10091 2) Useless operators: If an ASL operator does not specify an optional 10092 target 10093 operand and it also does not use the function return value from the 10094 operator, a warning is issued since the operator effectively does 10095 nothing. 10096 10097 3) Unreferenced objects: If a namespace object is created, but never 10098 referenced, a warning is issued. This is a warning level 2 since there 10099 are 10100 cases where this is ok, such as when a secondary table is loaded that 10101 uses 10102 the unreferenced objects. Even so, care is taken to only flag objects 10103 that 10104 don't look like they will ever be used. For example, the reserved methods 10105 (starting with an underscore) are usually not referenced because it is 10106 expected that the OS will invoke them. 10107 10108 ---------------------------------------- 10109 31 March 2006. Summary of changes for version 20060331: 10110 10111 1) ACPI CA Core Subsystem: 10112 10113 Implemented header file support for the following additional ACPI tables: 10114 ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this 10115 support, 10116 all current and known ACPI tables are now defined in the ACPICA headers 10117 and 10118 are available for use by device drivers and other software. 10119 10120 Implemented support to allow tables that contain ACPI names with invalid 10121 characters to be loaded. Previously, this would cause the table load to 10122 fail, but since there are several known cases of such tables on existing 10123 machines, this change was made to enable ACPI support for them. Also, 10124 this 10125 matches the behavior of the Microsoft ACPI implementation. 10126 10127 Fixed a couple regressions introduced during the memory optimization in 10128 the 10129 20060317 release. The namespace node definition required additional 10130 reorganization and an internal datatype that had been changed to 8-bit 10131 was 10132 restored to 32-bit. (Valery Podrezov) 10133 10134 Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState 10135 could be passed through to AcpiOsReleaseObject which is unexpected. Such 10136 null pointers are now trapped and ignored, matching the behavior of the 10137 previous implementation before the deployment of AcpiOsReleaseObject. 10138 (Valery Podrezov, Fiodor Suietov) 10139 10140 Fixed a memory mapping leak during the deletion of a SystemMemory 10141 operation 10142 region where a cached memory mapping was not deleted. This became a 10143 noticeable problem for operation regions that are defined within 10144 frequently 10145 used control methods. (Dana Meyers) 10146 10147 Reorganized the ACPI table header files into two main files: one for the 10148 ACPI tables consumed by the ACPICA core, and another for the 10149 miscellaneous 10150 ACPI tables that are consumed by the drivers and other software. The 10151 various 10152 FADT definitions were merged into one common section and three different 10153 tables (ACPI 1.0, 1.0+, and 2.0) 10154 10155 Example Code and Data Size: These are the sizes for the OS-independent 10156 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 10157 debug version of the code includes the debug output trace mechanism and 10158 has 10159 a much larger code and data size. 10160 10161 Previous Release: 10162 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 10163 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 10164 Current Release: 10165 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 10166 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 10167 10168 10169 2) iASL Compiler/Disassembler and Tools: 10170 10171 Disassembler: Implemented support to decode and format all non-AML ACPI 10172 tables (tables other than DSDTs and SSDTs.) This includes the new tables 10173 added to the ACPICA headers, therefore all current and known ACPI tables 10174 are 10175 supported. 10176 10177 Disassembler: The change to allow ACPI names with invalid characters also 10178 enables the disassembly of such tables. Invalid characters within names 10179 are 10180 changed to '*' to make the name printable; the iASL compiler will still 10181 generate an error for such names, however, since this is an invalid ACPI 10182 character. 10183 10184 Implemented an option for AcpiXtract (-a) to extract all tables found in 10185 the 10186 input file. The default invocation extracts only the DSDTs and SSDTs. 10187 10188 Fixed a couple of gcc generation issues for iASL and AcpiExec and added a 10189 makefile for the AcpiXtract utility. 10190 10191 ---------------------------------------- 10192 17 March 2006. Summary of changes for version 20060317: 10193 10194 1) ACPI CA Core Subsystem: 10195 10196 Implemented the use of a cache object for all internal namespace nodes. 10197 Since there are about 1000 static nodes in a typical system, this will 10198 decrease memory use for cache implementations that minimize per- 10199 allocation 10200 overhead (such as a slab allocator.) 10201 10202 Removed the reference count mechanism for internal namespace nodes, since 10203 it 10204 was deemed unnecessary. This reduces the size of each namespace node by 10205 about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit 10206 case, 10207 and 32 bytes for the 64-bit case. 10208 10209 Optimized several internal data structures to reduce object size on 64- 10210 bit 10211 platforms by packing data within the 64-bit alignment. This includes the 10212 frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static 10213 instances corresponding to the namespace objects. 10214 10215 Added two new strings for the predefined _OSI method: "Windows 2001.1 10216 SP1" 10217 and "Windows 2006". 10218 10219 Split the allocation tracking mechanism out to a separate file, from 10220 utalloc.c to uttrack.c. This mechanism appears to be only useful for 10221 application-level code. Kernels may wish to not include uttrack.c in 10222 distributions. 10223 10224 Removed all remnants of the obsolete ACPI_REPORT_* macros and the 10225 associated 10226 code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING 10227 macros.) 10228 10229 Code and Data Size: These are the sizes for the acpica.lib produced by 10230 the 10231 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any 10232 ACPI 10233 driver or OSPM code. The debug version of the code includes the debug 10234 output 10235 trace mechanism and has a much larger code and data size. Note that these 10236 values will vary depending on the efficiency of the compiler and the 10237 compiler options used during generation. 10238 10239 Previous Release: 10240 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 10241 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 10242 Current Release: 10243 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 10244 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 10245 10246 10247 2) iASL Compiler/Disassembler and Tools: 10248 10249 Implemented an ANSI C version of the acpixtract utility. This version 10250 will 10251 automatically extract the DSDT and all SSDTs from the input acpidump text 10252 file and dump the binary output to separate files. It can also display a 10253 summary of the input file including the headers for each table found and 10254 will extract any single ACPI table, with any signature. (See 10255 source/tools/acpixtract) 10256 10257 ---------------------------------------- 10258 10 March 2006. Summary of changes for version 20060310: 10259 10260 1) ACPI CA Core Subsystem: 10261 10262 Tagged all external interfaces to the subsystem with the new 10263 ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to 10264 assist 10265 kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL 10266 macro. The default definition is NULL. 10267 10268 Added the ACPI_THREAD_ID type for the return value from 10269 AcpiOsGetThreadId. 10270 This allows the host to define this as necessary to simplify kernel 10271 integration. The default definition is ACPI_NATIVE_UINT. 10272 10273 Fixed two interpreter problems related to error processing, the deletion 10274 of 10275 objects, and placing invalid pointers onto the internal operator result 10276 stack. BZ 6028, 6151 (Valery Podrezov) 10277 10278 Increased the reference count threshold where a warning is emitted for 10279 large 10280 reference counts in order to eliminate unnecessary warnings on systems 10281 with 10282 large namespaces (especially 64-bit.) Increased the value from 0x400 to 10283 0x800. 10284 10285 Due to universal disagreement as to the meaning of the 'c' in the 10286 calloc() 10287 function, the ACPI_MEM_CALLOCATE macro has been renamed to 10288 ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'. 10289 ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and 10290 ACPI_FREE. 10291 10292 Code and Data Size: These are the sizes for the acpica.lib produced by 10293 the 10294 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any 10295 ACPI 10296 driver or OSPM code. The debug version of the code includes the debug 10297 output 10298 trace mechanism and has a much larger code and data size. Note that these 10299 values will vary depending on the efficiency of the compiler and the 10300 compiler options used during generation. 10301 10302 Previous Release: 10303 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 10304 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 10305 Current Release: 10306 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 10307 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 10308 10309 10310 2) iASL Compiler/Disassembler: 10311 10312 Disassembler: implemented support for symbolic resource descriptor 10313 references. If a CreateXxxxField operator references a fixed offset 10314 within 10315 a 10316 resource descriptor, a name is assigned to the descriptor and the offset 10317 is 10318 translated to the appropriate resource tag and pathname. The addition of 10319 this support brings the disassembled code very close to the original ASL 10320 source code and helps eliminate run-time errors when the disassembled 10321 code 10322 is modified (and recompiled) in such a way as to invalidate the original 10323 fixed offsets. 10324 10325 Implemented support for a Descriptor Name as the last parameter to the 10326 ASL 10327 Register() macro. This parameter was inadvertently left out of the ACPI 10328 specification, and will be added for ACPI 3.0b. 10329 10330 Fixed a problem where the use of the "_OSI" string (versus the full path 10331 "\_OSI") caused an internal compiler error. ("No back ptr to op") 10332 10333 Fixed a problem with the error message that occurs when an invalid string 10334 is 10335 used for a _HID object (such as one with an embedded asterisk: 10336 "*PNP010A".) 10337 The correct message is now displayed. 10338 10339 ---------------------------------------- 10340 17 February 2006. Summary of changes for version 20060217: 10341 10342 1) ACPI CA Core Subsystem: 10343 10344 Implemented a change to the IndexField support to match the behavior of 10345 the 10346 Microsoft AML interpreter. The value written to the Index register is now 10347 a 10348 byte offset, no longer an index based upon the width of the Data 10349 register. 10350 This should fix IndexField problems seen on some machines where the Data 10351 register is not exactly one byte wide. The ACPI specification will be 10352 clarified on this point. 10353 10354 Fixed a problem where several resource descriptor types could overrun the 10355 internal descriptor buffer due to size miscalculation: VendorShort, 10356 VendorLong, and Interrupt. This was noticed on IA64 machines, but could 10357 affect all platforms. 10358 10359 Fixed a problem where individual resource descriptors were misaligned 10360 within 10361 the internal buffer, causing alignment faults on IA64 platforms. 10362 10363 Code and Data Size: These are the sizes for the acpica.lib produced by 10364 the 10365 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any 10366 ACPI 10367 driver or OSPM code. The debug version of the code includes the debug 10368 output 10369 trace mechanism and has a much larger code and data size. Note that these 10370 values will vary depending on the efficiency of the compiler and the 10371 compiler options used during generation. 10372 10373 Previous Release: 10374 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 10375 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 10376 Current Release: 10377 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 10378 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 10379 10380 10381 2) iASL Compiler/Disassembler: 10382 10383 Implemented support for new reserved names: _WDG and _WED are Microsoft 10384 extensions for Windows Instrumentation Management, _TDL is a new ACPI- 10385 defined method (Throttling Depth Limit.) 10386 10387 Fixed a problem where a zero-length VendorShort or VendorLong resource 10388 descriptor was incorrectly emitted as a descriptor of length one. 10389 10390 ---------------------------------------- 10391 10 February 2006. Summary of changes for version 20060210: 10392 10393 1) ACPI CA Core Subsystem: 10394 10395 Removed a couple of extraneous ACPI_ERROR messages that appeared during 10396 normal execution. These became apparent after the conversion from 10397 ACPI_DEBUG_PRINT. 10398 10399 Fixed a problem where the CreateField operator could hang if the BitIndex 10400 or 10401 NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359) 10402 10403 Fixed a problem where a DeRefOf operation on a buffer object incorrectly 10404 failed with an exception. This also fixes a couple of related RefOf and 10405 DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387) 10406 10407 Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead 10408 of 10409 AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov, 10410 BZ 10411 5480) 10412 10413 Implemented a memory cleanup at the end of the execution of each 10414 iteration 10415 of an AML While() loop, preventing the accumulation of outstanding 10416 objects. 10417 (Valery Podrezov, BZ 5427) 10418 10419 Eliminated a chunk of duplicate code in the object resolution code. 10420 (Valery 10421 Podrezov, BZ 5336) 10422 10423 Fixed several warnings during the 64-bit code generation. 10424 10425 The AcpiSrc source code conversion tool now inserts one line of 10426 whitespace 10427 after an if() statement that is followed immediately by a comment, 10428 improving 10429 readability of the Linux code. 10430 10431 Code and Data Size: The current and previous library sizes for the core 10432 subsystem are shown below. These are the code and data sizes for the 10433 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 10434 These 10435 values do not include any ACPI driver or OSPM code. The debug version of 10436 the 10437 code includes the debug output trace mechanism and has a much larger code 10438 and data size. Note that these values will vary depending on the 10439 efficiency 10440 of the compiler and the compiler options used during generation. 10441 10442 Previous Release: 10443 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 10444 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 10445 Current Release: 10446 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 10447 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 10448 10449 10450 2) iASL Compiler/Disassembler: 10451 10452 Fixed a problem with the disassembly of a BankField operator with a 10453 complex 10454 expression for the BankValue parameter. 10455 10456 ---------------------------------------- 10457 27 January 2006. Summary of changes for version 20060127: 10458 10459 1) ACPI CA Core Subsystem: 10460 10461 Implemented support in the Resource Manager to allow unresolved 10462 namestring 10463 references within resource package objects for the _PRT method. This 10464 support 10465 is in addition to the previously implemented unresolved reference support 10466 within the AML parser. If the interpreter slack mode is enabled, these 10467 unresolved references will be passed through to the caller as a NULL 10468 package 10469 entry. 10470 10471 Implemented and deployed new macros and functions for error and warning 10472 messages across the subsystem. These macros are simpler and generate less 10473 code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION, 10474 ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older 10475 macros remain defined to allow ACPI drivers time to migrate to the new 10476 macros. 10477 10478 Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of 10479 the 10480 Acquire/Release Lock OSL interfaces. 10481 10482 Fixed a problem where Alias ASL operators are sometimes not correctly 10483 resolved, in both the interpreter and the iASL compiler. 10484 10485 Fixed several problems with the implementation of the 10486 ConcatenateResTemplate 10487 ASL operator. As per the ACPI specification, zero length buffers are now 10488 treated as a single EndTag. One-length buffers always cause a fatal 10489 exception. Non-zero length buffers that do not end with a full 2-byte 10490 EndTag 10491 cause a fatal exception. 10492 10493 Fixed a possible structure overwrite in the AcpiGetObjectInfo external 10494 interface. (With assistance from Thomas Renninger) 10495 10496 Code and Data Size: The current and previous library sizes for the core 10497 subsystem are shown below. These are the code and data sizes for the 10498 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 10499 These 10500 values do not include any ACPI driver or OSPM code. The debug version of 10501 the 10502 code includes the debug output trace mechanism and has a much larger code 10503 and data size. Note that these values will vary depending on the 10504 efficiency 10505 of the compiler and the compiler options used during generation. 10506 10507 Previous Release: 10508 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 10509 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 10510 Current Release: 10511 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 10512 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 10513 10514 10515 2) iASL Compiler/Disassembler: 10516 10517 Fixed an internal error that was generated for any forward references to 10518 ASL 10519 Alias objects. 10520 10521 ---------------------------------------- 10522 13 January 2006. Summary of changes for version 20060113: 10523 10524 1) ACPI CA Core Subsystem: 10525 10526 Added 2006 copyright to all module headers and signons. This affects 10527 virtually every file in the ACPICA core subsystem, iASL compiler, and the 10528 utilities. 10529 10530 Enhanced the ACPICA error reporting in order to simplify user migration 10531 to 10532 the non-debug version of ACPICA. Replaced all instances of the 10533 ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN 10534 debug 10535 levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros, 10536 respectively. This preserves all error and warning messages in the non- 10537 debug 10538 version of the ACPICA code (this has been referred to as the "debug lite" 10539 option.) Over 200 cases were converted to create a total of over 380 10540 error/warning messages across the ACPICA code. This increases the code 10541 and 10542 data size of the default non-debug version of the code somewhat (about 10543 13K), 10544 but all error/warning reporting may be disabled if desired (and code 10545 eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time 10546 configuration option. The size of the debug version of ACPICA remains 10547 about 10548 the same. 10549 10550 Fixed a memory leak within the AML Debugger "Set" command. One object was 10551 not properly deleted for every successful invocation of the command. 10552 10553 Code and Data Size: The current and previous library sizes for the core 10554 subsystem are shown below. These are the code and data sizes for the 10555 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 10556 These 10557 values do not include any ACPI driver or OSPM code. The debug version of 10558 the 10559 code includes the debug output trace mechanism and has a much larger code 10560 and data size. Note that these values will vary depending on the 10561 efficiency 10562 of the compiler and the compiler options used during generation. 10563 10564 Previous Release: 10565 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 10566 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 10567 Current Release: 10568 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 10569 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 10570 10571 10572 2) iASL Compiler/Disassembler: 10573 10574 The compiler now officially supports the ACPI 3.0a specification that was 10575 released on December 30, 2005. (Specification is available at 10576 www.acpi.info) 10577 10578 ---------------------------------------- 10579 16 December 2005. Summary of changes for version 20051216: 10580 10581 1) ACPI CA Core Subsystem: 10582 10583 Implemented optional support to allow unresolved names within ASL Package 10584 objects. A null object is inserted in the package when a named reference 10585 cannot be located in the current namespace. Enabled via the interpreter 10586 slack flag, this should eliminate AE_NOT_FOUND exceptions seen on 10587 machines 10588 that contain such code. 10589 10590 Implemented an optimization to the initialization sequence that can 10591 improve 10592 boot time. During ACPI device initialization, the _STA method is now run 10593 if 10594 and only if the _INI method exists. The _STA method is used to determine 10595 if 10596 the device is present; An _INI can only be run if _STA returns present, 10597 but 10598 it is a waste of time to run the _STA method if the _INI does not exist. 10599 (Prototype and assistance from Dong Wei) 10600 10601 Implemented use of the C99 uintptr_t for the pointer casting macros if it 10602 is 10603 available in the current compiler. Otherwise, the default (void *) cast 10604 is 10605 used as before. 10606 10607 Fixed some possible memory leaks found within the execution path of the 10608 Break, Continue, If, and CreateField operators. (Valery Podrezov) 10609 10610 Fixed a problem introduced in the 20051202 release where an exception is 10611 generated during method execution if a control method attempts to declare 10612 another method. 10613 10614 Moved resource descriptor string constants that are used by both the AML 10615 disassembler and AML debugger to the common utilities directory so that 10616 these components are independent. 10617 10618 Implemented support in the AcpiExec utility (-e switch) to globally 10619 ignore 10620 exceptions during control method execution (method is not aborted.) 10621 10622 Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix 10623 generation. 10624 10625 Code and Data Size: The current and previous library sizes for the core 10626 subsystem are shown below. These are the code and data sizes for the 10627 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 10628 These 10629 values do not include any ACPI driver or OSPM code. The debug version of 10630 the 10631 code includes the debug output trace mechanism and has a much larger code 10632 and data size. Note that these values will vary depending on the 10633 efficiency 10634 of the compiler and the compiler options used during generation. 10635 10636 Previous Release: 10637 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 10638 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 10639 Current Release: 10640 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 10641 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 10642 10643 10644 2) iASL Compiler/Disassembler: 10645 10646 Fixed a problem where a CPU stack overflow fault could occur if a 10647 recursive 10648 method call was made from within a Return statement. 10649 10650 ---------------------------------------- 10651 02 December 2005. Summary of changes for version 20051202: 10652 10653 1) ACPI CA Core Subsystem: 10654 10655 Modified the parsing of control methods to no longer create namespace 10656 objects during the first pass of the parse. Objects are now created only 10657 during the execute phase, at the moment the namespace creation operator 10658 is 10659 encountered in the AML (Name, OperationRegion, CreateByteField, etc.) 10660 This 10661 should eliminate ALREADY_EXISTS exceptions seen on some machines where 10662 reentrant control methods are protected by an AML mutex. The mutex will 10663 now 10664 correctly block multiple threads from attempting to create the same 10665 object 10666 more than once. 10667 10668 Increased the number of available Owner Ids for namespace object tracking 10669 from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen 10670 on 10671 some machines with a large number of ACPI tables (either static or 10672 dynamic). 10673 10674 Fixed a problem with the AcpiExec utility where a fault could occur when 10675 the 10676 -b switch (batch mode) is used. 10677 10678 Enhanced the namespace dump routine to output the owner ID for each 10679 namespace object. 10680 10681 Code and Data Size: The current and previous library sizes for the core 10682 subsystem are shown below. These are the code and data sizes for the 10683 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 10684 These 10685 values do not include any ACPI driver or OSPM code. The debug version of 10686 the 10687 code includes the debug output trace mechanism and has a much larger code 10688 and data size. Note that these values will vary depending on the 10689 efficiency 10690 of the compiler and the compiler options used during generation. 10691 10692 Previous Release: 10693 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 10694 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 10695 Current Release: 10696 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 10697 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 10698 10699 10700 2) iASL Compiler/Disassembler: 10701 10702 Fixed a parse error during compilation of certain Switch/Case constructs. 10703 To 10704 simplify the parse, the grammar now allows for multiple Default 10705 statements 10706 and this error is now detected and flagged during the analysis phase. 10707 10708 Disassembler: The disassembly now includes the contents of the original 10709 table header within a comment at the start of the file. This includes the 10710 name and version of the original ASL compiler. 10711 10712 ---------------------------------------- 10713 17 November 2005. Summary of changes for version 20051117: 10714 10715 1) ACPI CA Core Subsystem: 10716 10717 Fixed a problem in the AML parser where the method thread count could be 10718 decremented below zero if any errors occurred during the method parse 10719 phase. 10720 This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some 10721 machines. 10722 This also fixed a related regression with the mechanism that detects and 10723 corrects methods that cannot properly handle reentrancy (related to the 10724 deployment of the new OwnerId mechanism.) 10725 10726 Eliminated the pre-parsing of control methods (to detect errors) during 10727 table load. Related to the problem above, this was causing unwind issues 10728 if 10729 any errors occurred during the parse, and it seemed to be overkill. A 10730 table 10731 load should not be aborted if there are problems with any single control 10732 method, thus rendering this feature rather pointless. 10733 10734 Fixed a problem with the new table-driven resource manager where an 10735 internal 10736 buffer overflow could occur for small resource templates. 10737 10738 Implemented a new external interface, AcpiGetVendorResource. This 10739 interface 10740 will find and return a vendor-defined resource descriptor within a _CRS 10741 or 10742 _PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn 10743 Helgaas. 10744 10745 Removed the length limit (200) on string objects as per the upcoming ACPI 10746 3.0A specification. This affects the following areas of the interpreter: 10747 1) 10748 any implicit conversion of a Buffer to a String, 2) a String object 10749 result 10750 of the ASL Concatentate operator, 3) the String object result of the ASL 10751 ToString operator. 10752 10753 Fixed a problem in the Windows OS interface layer (OSL) where a 10754 WAIT_FOREVER 10755 on a semaphore object would incorrectly timeout. This allows the 10756 multithreading features of the AcpiExec utility to work properly under 10757 Windows. 10758 10759 Updated the Linux makefiles for the iASL compiler and AcpiExec to include 10760 the recently added file named "utresrc.c". 10761 10762 Code and Data Size: The current and previous library sizes for the core 10763 subsystem are shown below. These are the code and data sizes for the 10764 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 10765 These 10766 values do not include any ACPI driver or OSPM code. The debug version of 10767 the 10768 code includes the debug output trace mechanism and has a much larger code 10769 and data size. Note that these values will vary depending on the 10770 efficiency 10771 of the compiler and the compiler options used during generation. 10772 10773 Previous Release: 10774 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 10775 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 10776 Current Release: 10777 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 10778 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 10779 10780 10781 2) iASL Compiler/Disassembler: 10782 10783 Removed the limit (200) on string objects as per the upcoming ACPI 3.0A 10784 specification. For the iASL compiler, this means that string literals 10785 within 10786 the source ASL can be of any length. 10787 10788 Enhanced the listing output to dump the AML code for resource descriptors 10789 immediately after the ASL code for each descriptor, instead of in a block 10790 at 10791 the end of the entire resource template. 10792 10793 Enhanced the compiler debug output to dump the entire original parse tree 10794 constructed during the parse phase, before any transforms are applied to 10795 the 10796 tree. The transformed tree is dumped also. 10797 10798 ---------------------------------------- 10799 02 November 2005. Summary of changes for version 20051102: 10800 10801 1) ACPI CA Core Subsystem: 10802 10803 Modified the subsystem initialization sequence to improve GPE support. 10804 The 10805 GPE initialization has been split into two parts in order to defer 10806 execution 10807 of the _PRW methods (Power Resources for Wake) until after the hardware 10808 is 10809 fully initialized and the SCI handler is installed. This allows the _PRW 10810 methods to access fields protected by the Global Lock. This will fix 10811 systems 10812 where a NO_GLOBAL_LOCK exception has been seen during initialization. 10813 10814 Converted the ACPI internal object disassemble and display code within 10815 the 10816 AML debugger to fully table-driven operation, reducing code size and 10817 increasing maintainability. 10818 10819 Fixed a regression with the ConcatenateResTemplate() ASL operator 10820 introduced 10821 in the 20051021 release. 10822 10823 Implemented support for "local" internal ACPI object types within the 10824 debugger "Object" command and the AcpiWalkNamespace external interfaces. 10825 These local types include RegionFields, BankFields, IndexFields, Alias, 10826 and 10827 reference objects. 10828 10829 Moved common AML resource handling code into a new file, "utresrc.c". 10830 This 10831 code is shared by both the Resource Manager and the AML Debugger. 10832 10833 Code and Data Size: The current and previous library sizes for the core 10834 subsystem are shown below. These are the code and data sizes for the 10835 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 10836 These 10837 values do not include any ACPI driver or OSPM code. The debug version of 10838 the 10839 code includes the debug output trace mechanism and has a much larger code 10840 and data size. Note that these values will vary depending on the 10841 efficiency 10842 of the compiler and the compiler options used during generation. 10843 10844 Previous Release: 10845 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 10846 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 10847 Current Release: 10848 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 10849 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 10850 10851 10852 2) iASL Compiler/Disassembler: 10853 10854 Fixed a problem with very large initializer lists (more than 4000 10855 elements) 10856 for both Buffer and Package objects where the parse stack could overflow. 10857 10858 Enhanced the pre-compile source code scan for non-ASCII characters to 10859 ignore 10860 characters within comment fields. The scan is now always performed and is 10861 no 10862 longer optional, detecting invalid characters within a source file 10863 immediately rather than during the parse phase or later. 10864 10865 Enhanced the ASL grammar definition to force early reductions on all 10866 list- 10867 style grammar elements so that the overall parse stack usage is greatly 10868 reduced. This should improve performance and reduce the possibility of 10869 parse 10870 stack overflow. 10871 10872 Eliminated all reduce/reduce conflicts in the iASL parser generation. 10873 Also, 10874 with the addition of a %expected statement, the compiler generates from 10875 source with no warnings. 10876 10877 Fixed a possible segment fault in the disassembler if the input filename 10878 does not contain a "dot" extension (Thomas Renninger). 10879 10880 ---------------------------------------- 10881 21 October 2005. Summary of changes for version 20051021: 10882 10883 1) ACPI CA Core Subsystem: 10884 10885 Implemented support for the EM64T and other x86-64 processors. This 10886 essentially entails recognizing that these processors support non-aligned 10887 memory transfers. Previously, all 64-bit processors were assumed to lack 10888 hardware support for non-aligned transfers. 10889 10890 Completed conversion of the Resource Manager to nearly full table-driven 10891 operation. Specifically, the resource conversion code (convert AML to 10892 internal format and the reverse) and the debug code to dump internal 10893 resource descriptors are fully table-driven, reducing code and data size 10894 and 10895 improving maintainability. 10896 10897 The OSL interfaces for Acquire and Release Lock now use a 64-bit flag 10898 word 10899 on 64-bit processors instead of a fixed 32-bit word. (With assistance 10900 from 10901 Alexey Starikovskiy) 10902 10903 Implemented support within the resource conversion code for the Type- 10904 Specific byte within the various ACPI 3.0 *WordSpace macros. 10905 10906 Fixed some issues within the resource conversion code for the type- 10907 specific 10908 flags for both Memory and I/O address resource descriptors. For Memory, 10909 implemented support for the MTP and TTP flags. For I/O, split the TRS and 10910 TTP flags into two separate fields. 10911 10912 Code and Data Size: The current and previous library sizes for the core 10913 subsystem are shown below. These are the code and data sizes for the 10914 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 10915 These 10916 values do not include any ACPI driver or OSPM code. The debug version of 10917 the 10918 code includes the debug output trace mechanism and has a much larger code 10919 and data size. Note that these values will vary depending on the 10920 efficiency 10921 of the compiler and the compiler options used during generation. 10922 10923 Previous Release: 10924 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 10925 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 10926 Current Release: 10927 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 10928 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 10929 10930 10931 10932 2) iASL Compiler/Disassembler: 10933 10934 Relaxed a compiler restriction that disallowed a ResourceIndex byte if 10935 the 10936 corresponding ResourceSource string was not also present in a resource 10937 descriptor declaration. This restriction caused problems with existing 10938 AML/ASL code that includes the Index byte without the string. When such 10939 AML 10940 was disassembled, it could not be compiled without modification. Further, 10941 the modified code created a resource template with a different size than 10942 the 10943 original, breaking code that used fixed offsets into the resource 10944 template 10945 buffer. 10946 10947 Removed a recent feature of the disassembler to ignore a lone 10948 ResourceIndex 10949 byte. This byte is now emitted if present so that the exact AML can be 10950 reproduced when the disassembled code is recompiled. 10951 10952 Improved comments and text alignment for the resource descriptor code 10953 emitted by the disassembler. 10954 10955 Implemented disassembler support for the ACPI 3.0 AccessSize field within 10956 a 10957 Register() resource descriptor. 10958 10959 ---------------------------------------- 10960 30 September 2005. Summary of changes for version 20050930: 10961 10962 1) ACPI CA Core Subsystem: 10963 10964 Completed a major overhaul of the Resource Manager code - specifically, 10965 optimizations in the area of the AML/internal resource conversion code. 10966 The 10967 code has been optimized to simplify and eliminate duplicated code, CPU 10968 stack 10969 use has been decreased by optimizing function parameters and local 10970 variables, and naming conventions across the manager have been 10971 standardized 10972 for clarity and ease of maintenance (this includes function, parameter, 10973 variable, and struct/typedef names.) The update may force changes in some 10974 driver code, depending on how resources are handled by the host OS. 10975 10976 All Resource Manager dispatch and information tables have been moved to a 10977 single location for clarity and ease of maintenance. One new file was 10978 created, named "rsinfo.c". 10979 10980 The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to 10981 guarantee that the argument is not evaluated twice, making them less 10982 prone 10983 to macro side-effects. However, since there exists the possibility of 10984 additional stack use if a particular compiler cannot optimize them (such 10985 as 10986 in the debug generation case), the original macros are optionally 10987 available. 10988 Note that some invocations of the return_VALUE macro may now cause size 10989 mismatch warnings; the return_UINT8 and return_UINT32 macros are provided 10990 to 10991 eliminate these. (From Randy Dunlap) 10992 10993 Implemented a new mechanism to enable debug tracing for individual 10994 control 10995 methods. A new external interface, AcpiDebugTrace, is provided to enable 10996 this mechanism. The intent is to allow the host OS to easily enable and 10997 disable tracing for problematic control methods. This interface can be 10998 easily exposed to a user or debugger interface if desired. See the file 10999 psxface.c for details. 11000 11001 AcpiUtCallocate will now return a valid pointer if a length of zero is 11002 specified - a length of one is used and a warning is issued. This matches 11003 the behavior of AcpiUtAllocate. 11004 11005 Code and Data Size: The current and previous library sizes for the core 11006 subsystem are shown below. These are the code and data sizes for the 11007 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 11008 These 11009 values do not include any ACPI driver or OSPM code. The debug version of 11010 the 11011 code includes the debug output trace mechanism and has a much larger code 11012 and data size. Note that these values will vary depending on the 11013 efficiency 11014 of the compiler and the compiler options used during generation. 11015 11016 Previous Release: 11017 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 11018 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 11019 Current Release: 11020 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 11021 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 11022 11023 11024 2) iASL Compiler/Disassembler: 11025 11026 A remark is issued if the effective compile-time length of a package or 11027 buffer is zero. Previously, this was a warning. 11028 11029 ---------------------------------------- 11030 16 September 2005. Summary of changes for version 20050916: 11031 11032 1) ACPI CA Core Subsystem: 11033 11034 Fixed a problem within the Resource Manager where support for the Generic 11035 Register descriptor was not fully implemented. This descriptor is now 11036 fully 11037 recognized, parsed, disassembled, and displayed. 11038 11039 Completely restructured the Resource Manager code to utilize table-driven 11040 dispatch and lookup, eliminating many of the large switch() statements. 11041 This 11042 reduces overall subsystem code size and code complexity. Affects the 11043 resource parsing and construction, disassembly, and debug dump output. 11044 11045 Cleaned up and restructured the debug dump output for all resource 11046 descriptors. Improved readability of the output and reduced code size. 11047 11048 Fixed a problem where changes to internal data structures caused the 11049 optional ACPI_MUTEX_DEBUG code to fail compilation if specified. 11050 11051 Code and Data Size: The current and previous library sizes for the core 11052 subsystem are shown below. These are the code and data sizes for the 11053 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 11054 These 11055 values do not include any ACPI driver or OSPM code. The debug version of 11056 the 11057 code includes the debug output trace mechanism and has a much larger code 11058 and data size. Note that these values will vary depending on the 11059 efficiency 11060 of the compiler and the compiler options used during generation. 11061 11062 Previous Release: 11063 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 11064 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 11065 Current Release: 11066 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 11067 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 11068 11069 11070 2) iASL Compiler/Disassembler: 11071 11072 Updated the disassembler to automatically insert an EndDependentFn() 11073 macro 11074 into the ASL stream if this macro is missing in the original AML code, 11075 simplifying compilation of the resulting ASL module. 11076 11077 Fixed a problem in the disassembler where a disassembled ResourceSource 11078 string (within a large resource descriptor) was not surrounded by quotes 11079 and 11080 not followed by a comma, causing errors when the resulting ASL module was 11081 compiled. Also, escape sequences within a ResourceSource string are now 11082 handled correctly (especially "\\") 11083 11084 ---------------------------------------- 11085 02 September 2005. Summary of changes for version 20050902: 11086 11087 1) ACPI CA Core Subsystem: 11088 11089 Fixed a problem with the internal Owner ID allocation and deallocation 11090 mechanisms for control method execution and recursive method invocation. 11091 This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId" 11092 messages seen on some systems. Recursive method invocation depth is 11093 currently limited to 255. (Alexey Starikovskiy) 11094 11095 Completely eliminated all vestiges of support for the "module-level 11096 executable code" until this support is fully implemented and debugged. 11097 This 11098 should eliminate the NO_RETURN_VALUE exceptions seen during table load on 11099 some systems that invoke this support. 11100 11101 Fixed a problem within the resource manager code where the transaction 11102 flags 11103 for a 64-bit address descriptor were handled incorrectly in the type- 11104 specific flag byte. 11105 11106 Consolidated duplicate code within the address descriptor resource 11107 manager 11108 code, reducing overall subsystem code size. 11109 11110 Fixed a fault when using the AML debugger "disassemble" command to 11111 disassemble individual control methods. 11112 11113 Removed references to the "release_current" directory within the Unix 11114 release package. 11115 11116 Code and Data Size: The current and previous core subsystem library sizes 11117 are shown below. These are the code and data sizes for the acpica.lib 11118 produced by the Microsoft Visual C++ 6.0 compiler. These values do not 11119 include any ACPI driver or OSPM code. The debug version of the code 11120 includes 11121 the debug output trace mechanism and has a much larger code and data 11122 size. 11123 Note that these values will vary depending on the efficiency of the 11124 compiler 11125 and the compiler options used during generation. 11126 11127 Previous Release: 11128 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 11129 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 11130 Current Release: 11131 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 11132 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 11133 11134 11135 2) iASL Compiler/Disassembler: 11136 11137 Implemented an error check for illegal duplicate values in the interrupt 11138 and 11139 dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and 11140 Interrupt(). 11141 11142 Implemented error checking for the Irq() and IrqNoFlags() macros to 11143 detect 11144 too many values in the interrupt list (16 max) and invalid values in the 11145 list (range 0 - 15) 11146 11147 The maximum length string literal within an ASL file is now restricted to 11148 200 characters as per the ACPI specification. 11149 11150 Fixed a fault when using the -ln option (generate namespace listing). 11151 11152 Implemented an error check to determine if a DescriptorName within a 11153 resource descriptor has already been used within the current scope. 11154 11155 ---------------------------------------- 11156 15 August 2005. Summary of changes for version 20050815: 11157 11158 1) ACPI CA Core Subsystem: 11159 11160 Implemented a full bytewise compare to determine if a table load request 11161 is 11162 attempting to load a duplicate table. The compare is performed if the 11163 table 11164 signatures and table lengths match. This will allow different tables with 11165 the same OEM Table ID and revision to be loaded - probably against the 11166 ACPI 11167 specification, but discovered in the field nonetheless. 11168 11169 Added the changes.txt logfile to each of the zipped release packages. 11170 11171 Code and Data Size: Current and previous core subsystem library sizes are 11172 shown below. These are the code and data sizes for the acpica.lib 11173 produced 11174 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11175 any ACPI driver or OSPM code. The debug version of the code includes the 11176 debug output trace mechanism and has a much larger code and data size. 11177 Note 11178 that these values will vary depending on the efficiency of the compiler 11179 and 11180 the compiler options used during generation. 11181 11182 Previous Release: 11183 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 11184 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 11185 Current Release: 11186 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 11187 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 11188 11189 11190 2) iASL Compiler/Disassembler: 11191 11192 Fixed a problem where incorrect AML code could be generated for Package 11193 objects if optimization is disabled (via the -oa switch). 11194 11195 Fixed a problem with where incorrect AML code is generated for variable- 11196 length packages when the package length is not specified and the number 11197 of 11198 initializer values is greater than 255. 11199 11200 11201 ---------------------------------------- 11202 29 July 2005. Summary of changes for version 20050729: 11203 11204 1) ACPI CA Core Subsystem: 11205 11206 Implemented support to ignore an attempt to install/load a particular 11207 ACPI 11208 table more than once. Apparently there exists BIOS code that repeatedly 11209 attempts to load the same SSDT upon certain events. With assistance from 11210 Venkatesh Pallipadi. 11211 11212 Restructured the main interface to the AML parser in order to correctly 11213 handle all exceptional conditions. This will prevent leakage of the 11214 OwnerId 11215 resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on 11216 some 11217 machines. With assistance from Alexey Starikovskiy. 11218 11219 Support for "module level code" has been disabled in this version due to 11220 a 11221 number of issues that have appeared on various machines. The support can 11222 be 11223 enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem 11224 compilation. When the issues are fully resolved, the code will be enabled 11225 by 11226 default again. 11227 11228 Modified the internal functions for debug print support to define the 11229 FunctionName parameter as a (const char *) for compatibility with 11230 compiler 11231 built-in macros such as __FUNCTION__, etc. 11232 11233 Linted the entire ACPICA source tree for both 32-bit and 64-bit. 11234 11235 Implemented support to display an object count summary for the AML 11236 Debugger 11237 commands Object and Methods. 11238 11239 Code and Data Size: Current and previous core subsystem library sizes are 11240 shown below. These are the code and data sizes for the acpica.lib 11241 produced 11242 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11243 any ACPI driver or OSPM code. The debug version of the code includes the 11244 debug output trace mechanism and has a much larger code and data size. 11245 Note 11246 that these values will vary depending on the efficiency of the compiler 11247 and 11248 the compiler options used during generation. 11249 11250 Previous Release: 11251 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 11252 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 11253 Current Release: 11254 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 11255 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 11256 11257 11258 2) iASL Compiler/Disassembler: 11259 11260 Fixed a regression that appeared in the 20050708 version of the compiler 11261 where an error message was inadvertently emitted for invocations of the 11262 _OSI 11263 reserved control method. 11264 11265 ---------------------------------------- 11266 08 July 2005. Summary of changes for version 20050708: 11267 11268 1) ACPI CA Core Subsystem: 11269 11270 The use of the CPU stack in the debug version of the subsystem has been 11271 considerably reduced. Previously, a debug structure was declared in every 11272 function that used the debug macros. This structure has been removed in 11273 favor of declaring the individual elements as parameters to the debug 11274 functions. This reduces the cumulative stack use during nested execution 11275 of 11276 ACPI function calls at the cost of a small increase in the code size of 11277 the 11278 debug version of the subsystem. With assistance from Alexey Starikovskiy 11279 and 11280 Len Brown. 11281 11282 Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent 11283 headers to define a macro that will return the current function name at 11284 runtime (such as __FUNCTION__ or _func_, etc.) The function name is used 11285 by 11286 the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the 11287 compiler-dependent header, the function name is saved on the CPU stack 11288 (one 11289 pointer per function.) This mechanism is used because apparently there 11290 exists no standard ANSI-C defined macro that that returns the function 11291 name. 11292 11293 Redesigned and reimplemented the "Owner ID" mechanism used to track 11294 namespace objects created/deleted by ACPI tables and control method 11295 execution. A bitmap is now used to allocate and free the IDs, thus 11296 solving 11297 the wraparound problem present in the previous implementation. The size 11298 of 11299 the namespace node descriptor was reduced by 2 bytes as a result (Alexey 11300 Starikovskiy). 11301 11302 Removed the UINT32_BIT and UINT16_BIT types that were used for the 11303 bitfield 11304 flag definitions within the headers for the predefined ACPI tables. These 11305 have been replaced by UINT8_BIT in order to increase the code portability 11306 of 11307 the subsystem. If the use of UINT8 remains a problem, we may be forced to 11308 eliminate bitfields entirely because of a lack of portability. 11309 11310 Enhanced the performance of the AcpiUtUpdateObjectReference procedure. 11311 This 11312 is a frequently used function and this improvement increases the 11313 performance 11314 of the entire subsystem (Alexey Starikovskiy). 11315 11316 Fixed several possible memory leaks and the inverse - premature object 11317 deletion (Alexey Starikovskiy). 11318 11319 Code and Data Size: Current and previous core subsystem library sizes are 11320 shown below. These are the code and data sizes for the acpica.lib 11321 produced 11322 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11323 any ACPI driver or OSPM code. The debug version of the code includes the 11324 debug output trace mechanism and has a much larger code and data size. 11325 Note 11326 that these values will vary depending on the efficiency of the compiler 11327 and 11328 the compiler options used during generation. 11329 11330 Previous Release: 11331 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 11332 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 11333 Current Release: 11334 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 11335 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 11336 11337 ---------------------------------------- 11338 24 June 2005. Summary of changes for version 20050624: 11339 11340 1) ACPI CA Core Subsystem: 11341 11342 Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for 11343 the host-defined cache object. This allows the OSL implementation to 11344 define 11345 and type this object in any manner desired, simplifying the OSL 11346 implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for 11347 Linux, and should be defined in the OS-specific header file for other 11348 operating systems as required. 11349 11350 Changed the interface to AcpiOsAcquireObject to directly return the 11351 requested object as the function return (instead of ACPI_STATUS.) This 11352 change was made for performance reasons, since this is the purpose of the 11353 interface in the first place. AcpiOsAcquireObject is now similar to the 11354 AcpiOsAllocate interface. 11355 11356 Implemented a new AML debugger command named Businfo. This command 11357 displays 11358 information about all devices that have an associate _PRT object. The 11359 _ADR, 11360 _HID, _UID, and _CID are displayed for these devices. 11361 11362 Modified the initialization sequence in AcpiInitializeSubsystem to call 11363 the 11364 OSL interface AcpiOslInitialize first, before any local initialization. 11365 This 11366 change was required because the global initialization now calls OSL 11367 interfaces. 11368 11369 Enhanced the Dump command to display the entire contents of Package 11370 objects 11371 (including all sub-objects and their values.) 11372 11373 Restructured the code base to split some files because of size and/or 11374 because the code logically belonged in a separate file. New files are 11375 listed 11376 below. All makefiles and project files included in the ACPI CA release 11377 have 11378 been updated. 11379 utilities/utcache.c /* Local cache interfaces */ 11380 utilities/utmutex.c /* Local mutex support */ 11381 utilities/utstate.c /* State object support */ 11382 interpreter/parser/psloop.c /* Main AML parse loop */ 11383 11384 Code and Data Size: Current and previous core subsystem library sizes are 11385 shown below. These are the code and data sizes for the acpica.lib 11386 produced 11387 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11388 any ACPI driver or OSPM code. The debug version of the code includes the 11389 debug output trace mechanism and has a much larger code and data size. 11390 Note 11391 that these values will vary depending on the efficiency of the compiler 11392 and 11393 the compiler options used during generation. 11394 11395 Previous Release: 11396 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 11397 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 11398 Current Release: 11399 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 11400 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 11401 11402 11403 2) iASL Compiler/Disassembler: 11404 11405 Fixed a regression introduced in version 20050513 where the use of a 11406 Package 11407 object within a Case() statement caused a compile time exception. The 11408 original behavior has been restored (a Match() operator is emitted.) 11409 11410 ---------------------------------------- 11411 17 June 2005. Summary of changes for version 20050617: 11412 11413 1) ACPI CA Core Subsystem: 11414 11415 Moved the object cache operations into the OS interface layer (OSL) to 11416 allow 11417 the host OS to handle these operations if desired (for example, the Linux 11418 OSL will invoke the slab allocator). This support is optional; the 11419 compile 11420 time define ACPI_USE_LOCAL_CACHE may be used to utilize the original 11421 cache 11422 code in the ACPI CA core. The new OSL interfaces are shown below. See 11423 utalloc.c for an example implementation, and acpiosxf.h for the exact 11424 interface definitions. With assistance from Alexey Starikovskiy. 11425 AcpiOsCreateCache 11426 AcpiOsDeleteCache 11427 AcpiOsPurgeCache 11428 AcpiOsAcquireObject 11429 AcpiOsReleaseObject 11430 11431 Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to 11432 return 11433 and restore a flags parameter. This fits better with many OS lock models. 11434 Note: the current execution state (interrupt handler or not) is no longer 11435 passed to these interfaces. If necessary, the OSL must determine this 11436 state 11437 by itself, a simple and fast operation. With assistance from Alexey 11438 Starikovskiy. 11439 11440 Fixed a problem in the ACPI table handling where a valid XSDT was assumed 11441 present if the revision of the RSDP was 2 or greater. According to the 11442 ACPI 11443 specification, the XSDT is optional in all cases, and the table manager 11444 therefore now checks for both an RSDP >=2 and a valid XSDT pointer. 11445 Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs 11446 contain 11447 only the RSDT. 11448 11449 Fixed an interpreter problem with the Mid() operator in the case of an 11450 input 11451 string where the resulting output string is of zero length. It now 11452 correctly 11453 returns a valid, null terminated string object instead of a string object 11454 with a null pointer. 11455 11456 Fixed a problem with the control method argument handling to allow a 11457 store 11458 to an Arg object that already contains an object of type Device. The 11459 Device 11460 object is now correctly overwritten. Previously, an error was returned. 11461 11462 11463 Enhanced the debugger Find command to emit object values in addition to 11464 the 11465 found object pathnames. The output format is the same as the dump 11466 namespace 11467 command. 11468 11469 Enhanced the debugger Set command. It now has the ability to set the 11470 value 11471 of any Named integer object in the namespace (Previously, only method 11472 locals 11473 and args could be set.) 11474 11475 Code and Data Size: Current and previous core subsystem library sizes are 11476 shown below. These are the code and data sizes for the acpica.lib 11477 produced 11478 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11479 any ACPI driver or OSPM code. The debug version of the code includes the 11480 debug output trace mechanism and has a much larger code and data size. 11481 Note 11482 that these values will vary depending on the efficiency of the compiler 11483 and 11484 the compiler options used during generation. 11485 11486 Previous Release: 11487 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 11488 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 11489 Current Release: 11490 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 11491 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 11492 11493 11494 2) iASL Compiler/Disassembler: 11495 11496 Fixed a regression in the disassembler where if/else/while constructs 11497 were 11498 output incorrectly. This problem was introduced in the previous release 11499 (20050526). This problem also affected the single-step disassembly in the 11500 debugger. 11501 11502 Fixed a problem where compiling the reserved _OSI method would randomly 11503 (but 11504 rarely) produce compile errors. 11505 11506 Enhanced the disassembler to emit compilable code in the face of 11507 incorrect 11508 AML resource descriptors. If the optional ResourceSourceIndex is present, 11509 but the ResourceSource is not, do not emit the ResourceSourceIndex in the 11510 disassembly. Otherwise, the resulting code cannot be compiled without 11511 errors. 11512 11513 ---------------------------------------- 11514 26 May 2005. Summary of changes for version 20050526: 11515 11516 1) ACPI CA Core Subsystem: 11517 11518 Implemented support to execute Type 1 and Type 2 AML opcodes appearing at 11519 the module level (not within a control method.) These opcodes are 11520 executed 11521 exactly once at the time the table is loaded. This type of code was legal 11522 up 11523 until the release of ACPI 2.0B (2002) and is now supported within ACPI CA 11524 in 11525 order to provide backwards compatibility with earlier BIOS 11526 implementations. 11527 This eliminates the "Encountered executable code at module level" warning 11528 that was previously generated upon detection of such code. 11529 11530 Fixed a problem in the interpreter where an AE_NOT_FOUND exception could 11531 inadvertently be generated during the lookup of namespace objects in the 11532 second pass parse of ACPI tables and control methods. It appears that 11533 this 11534 problem could occur during the resolution of forward references to 11535 namespace 11536 objects. 11537 11538 Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function, 11539 corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This 11540 allows the deadlock detection debug code to be compiled out in the normal 11541 case, improving mutex performance (and overall subsystem performance) 11542 considerably. 11543 11544 Implemented a handful of miscellaneous fixes for possible memory leaks on 11545 error conditions and error handling control paths. These fixes were 11546 suggested by FreeBSD and the Coverity Prevent source code analysis tool. 11547 11548 Added a check for a null RSDT pointer in AcpiGetFirmwareTable 11549 (tbxfroot.c) 11550 to prevent a fault in this error case. 11551 11552 Code and Data Size: Current and previous core subsystem library sizes are 11553 shown below. These are the code and data sizes for the acpica.lib 11554 produced 11555 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11556 any ACPI driver or OSPM code. The debug version of the code includes the 11557 debug output trace mechanism and has a much larger code and data size. 11558 Note 11559 that these values will vary depending on the efficiency of the compiler 11560 and 11561 the compiler options used during generation. 11562 11563 Previous Release: 11564 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 11565 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 11566 Current Release: 11567 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 11568 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 11569 11570 11571 2) iASL Compiler/Disassembler: 11572 11573 Implemented support to allow Type 1 and Type 2 ASL operators to appear at 11574 the module level (not within a control method.) These operators will be 11575 executed once at the time the table is loaded. This type of code was 11576 legal 11577 up until the release of ACPI 2.0B (2002) and is now supported by the iASL 11578 compiler in order to provide backwards compatibility with earlier BIOS 11579 ASL 11580 code. 11581 11582 The ACPI integer width (specified via the table revision ID or the -r 11583 override, 32 or 64 bits) is now used internally during compile-time 11584 constant 11585 folding to ensure that constants are truncated to 32 bits if necessary. 11586 Previously, the revision ID value was only emitted in the AML table 11587 header. 11588 11589 An error message is now generated for the Mutex and Method operators if 11590 the 11591 SyncLevel parameter is outside the legal range of 0 through 15. 11592 11593 Fixed a problem with the Method operator ParameterTypes list handling 11594 (ACPI 11595 3.0). Previously, more than 2 types or 2 arguments generated a syntax 11596 error. 11597 The actual underlying implementation of method argument typechecking is 11598 still under development, however. 11599 11600 ---------------------------------------- 11601 13 May 2005. Summary of changes for version 20050513: 11602 11603 1) ACPI CA Core Subsystem: 11604 11605 Implemented support for PCI Express root bridges -- added support for 11606 device 11607 PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup. 11608 11609 The interpreter now automatically truncates incoming 64-bit constants to 11610 32 11611 bits if currently executing out of a 32-bit ACPI table (Revision < 2). 11612 This 11613 also affects the iASL compiler constant folding. (Note: as per below, the 11614 iASL compiler no longer allows 64-bit constants within 32-bit tables.) 11615 11616 Fixed a problem where string and buffer objects with "static" pointers 11617 (pointers to initialization data within an ACPI table) were not handled 11618 consistently. The internal object copy operation now always copies the 11619 data 11620 to a newly allocated buffer, regardless of whether the source object is 11621 static or not. 11622 11623 Fixed a problem with the FromBCD operator where an implicit result 11624 conversion was improperly performed while storing the result to the 11625 target 11626 operand. Since this is an "explicit conversion" operator, the implicit 11627 conversion should never be performed on the output. 11628 11629 Fixed a problem with the CopyObject operator where a copy to an existing 11630 named object did not always completely overwrite the existing object 11631 stored 11632 at name. Specifically, a buffer-to-buffer copy did not delete the 11633 existing 11634 buffer. 11635 11636 Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces 11637 and 11638 structs for consistency. 11639 11640 Code and Data Size: Current and previous core subsystem library sizes are 11641 shown below. These are the code and data sizes for the acpica.lib 11642 produced 11643 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11644 any ACPI driver or OSPM code. The debug version of the code includes the 11645 debug output trace mechanism and has a much larger code and data size. 11646 Note 11647 that these values will vary depending on the efficiency of the compiler 11648 and 11649 the compiler options used during generation. 11650 11651 Previous Release: 11652 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 11653 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 11654 Current Release: (Same sizes) 11655 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 11656 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 11657 11658 11659 2) iASL Compiler/Disassembler: 11660 11661 The compiler now emits a warning if an attempt is made to generate a 64- 11662 bit 11663 integer constant from within a 32-bit ACPI table (Revision < 2). The 11664 integer 11665 is truncated to 32 bits. 11666 11667 Fixed a problem with large package objects: if the static length of the 11668 package is greater than 255, the "variable length package" opcode is 11669 emitted. Previously, this caused an error. This requires an update to the 11670 ACPI spec, since it currently (incorrectly) states that packages larger 11671 than 11672 255 elements are not allowed. 11673 11674 The disassembler now correctly handles variable length packages and 11675 packages 11676 larger than 255 elements. 11677 11678 ---------------------------------------- 11679 08 April 2005. Summary of changes for version 20050408: 11680 11681 1) ACPI CA Core Subsystem: 11682 11683 Fixed three cases in the interpreter where an "index" argument to an ASL 11684 function was still (internally) 32 bits instead of the required 64 bits. 11685 This was the Index argument to the Index, Mid, and Match operators. 11686 11687 The "strupr" function is now permanently local (AcpiUtStrupr), since this 11688 is 11689 not a POSIX-defined function and not present in most kernel-level C 11690 libraries. All references to the C library strupr function have been 11691 removed 11692 from the headers. 11693 11694 Completed the deployment of static functions/prototypes. All prototypes 11695 with 11696 the static attribute have been moved from the headers to the owning C 11697 file. 11698 11699 Implemented an extract option (-e) for the AcpiBin utility (AML binary 11700 utility). This option allows the utility to extract individual ACPI 11701 tables 11702 from the output of AcpiDmp. It provides the same functionality of the 11703 acpixtract.pl perl script without the worry of setting the correct perl 11704 options. AcpiBin runs on Windows and has not yet been generated/validated 11705 in 11706 the Linux/Unix environment (but should be soon). 11707 11708 Updated and fixed the table dump option for AcpiBin (-d). This option 11709 converts a single ACPI table to a hex/ascii file, similar to the output 11710 of 11711 AcpiDmp. 11712 11713 Code and Data Size: Current and previous core subsystem library sizes are 11714 shown below. These are the code and data sizes for the acpica.lib 11715 produced 11716 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11717 any ACPI driver or OSPM code. The debug version of the code includes the 11718 debug output trace mechanism and has a much larger code and data size. 11719 Note 11720 that these values will vary depending on the efficiency of the compiler 11721 and 11722 the compiler options used during generation. 11723 11724 Previous Release: 11725 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 11726 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 11727 Current Release: 11728 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 11729 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 11730 11731 11732 2) iASL Compiler/Disassembler: 11733 11734 Disassembler fix: Added a check to ensure that the table length found in 11735 the 11736 ACPI table header within the input file is not longer than the actual 11737 input 11738 file size. This indicates some kind of file or table corruption. 11739 11740 ---------------------------------------- 11741 29 March 2005. Summary of changes for version 20050329: 11742 11743 1) ACPI CA Core Subsystem: 11744 11745 An error is now generated if an attempt is made to create a Buffer Field 11746 of 11747 length zero (A CreateField with a length operand of zero.) 11748 11749 The interpreter now issues a warning whenever executable code at the 11750 module 11751 level is detected during ACPI table load. This will give some idea of the 11752 prevalence of this type of code. 11753 11754 Implemented support for references to named objects (other than control 11755 methods) within package objects. 11756 11757 Enhanced package object output for the debug object. Package objects are 11758 now 11759 completely dumped, showing all elements. 11760 11761 Enhanced miscellaneous object output for the debug object. Any object can 11762 now be written to the debug object (for example, a device object can be 11763 written, and the type of the object will be displayed.) 11764 11765 The "static" qualifier has been added to all local functions across both 11766 the 11767 core subsystem and the iASL compiler. 11768 11769 The number of "long" lines (> 80 chars) within the source has been 11770 significantly reduced, by about 1/3. 11771 11772 Cleaned up all header files to ensure that all CA/iASL functions are 11773 prototyped (even static functions) and the formatting is consistent. 11774 11775 Two new header files have been added, acopcode.h and acnames.h. 11776 11777 Removed several obsolete functions that were no longer used. 11778 11779 Code and Data Size: Current and previous core subsystem library sizes are 11780 shown below. These are the code and data sizes for the acpica.lib 11781 produced 11782 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11783 any ACPI driver or OSPM code. The debug version of the code includes the 11784 debug output trace mechanism and has a much larger code and data size. 11785 Note 11786 that these values will vary depending on the efficiency of the compiler 11787 and 11788 the compiler options used during generation. 11789 11790 Previous Release: 11791 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 11792 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 11793 Current Release: 11794 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 11795 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 11796 11797 11798 11799 2) iASL Compiler/Disassembler: 11800 11801 Fixed a problem with the resource descriptor generation/support. For the 11802 ResourceSourceIndex and the ResourceSource fields, both must be present, 11803 or 11804 both must be not present - can't have one without the other. 11805 11806 The compiler now returns non-zero from the main procedure if any errors 11807 have 11808 occurred during the compilation. 11809 11810 11811 ---------------------------------------- 11812 09 March 2005. Summary of changes for version 20050309: 11813 11814 1) ACPI CA Core Subsystem: 11815 11816 The string-to-buffer implicit conversion code has been modified again 11817 after 11818 a change to the ACPI specification. In order to match the behavior of 11819 the 11820 other major ACPI implementation, the target buffer is no longer truncated 11821 if 11822 the source string is smaller than an existing target buffer. This change 11823 requires an update to the ACPI spec, and should eliminate the recent 11824 AE_AML_BUFFER_LIMIT issues. 11825 11826 The "implicit return" support was rewritten to a new algorithm that 11827 solves 11828 the general case. Rather than attempt to determine when a method is about 11829 to 11830 exit, the result of every ASL operator is saved momentarily until the 11831 very 11832 next ASL operator is executed. Therefore, no matter how the method exits, 11833 there will always be a saved implicit return value. This feature is only 11834 enabled with the AcpiGbl_EnableInterpreterSlack flag, and should 11835 eliminate 11836 AE_AML_NO_RETURN_VALUE errors when enabled. 11837 11838 Implemented implicit conversion support for the predicate (operand) of 11839 the 11840 If, Else, and While operators. String and Buffer arguments are 11841 automatically 11842 converted to Integers. 11843 11844 Changed the string-to-integer conversion behavior to match the new ACPI 11845 errata: "If no integer object exists, a new integer is created. The ASCII 11846 string is interpreted as a hexadecimal constant. Each string character is 11847 interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting 11848 with the first character as the most significant digit, and ending with 11849 the 11850 first non-hexadecimal character or end-of-string." This means that the 11851 first 11852 non-hex character terminates the conversion and this is the code that was 11853 changed. 11854 11855 Fixed a problem where the ObjectType operator would fail (fault) when 11856 used 11857 on an Index of a Package which pointed to a null package element. The 11858 operator now properly returns zero (Uninitialized) in this case. 11859 11860 Fixed a problem where the While operator used excessive memory by not 11861 properly popping the result stack during execution. There was no memory 11862 leak 11863 after execution, however. (Code provided by Valery Podrezov.) 11864 11865 Fixed a problem where references to control methods within Package 11866 objects 11867 caused the method to be invoked, instead of producing a reference object 11868 pointing to the method. 11869 11870 Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree) 11871 to 11872 improve performance and reduce code size. (Code provided by Alexey 11873 Starikovskiy.) 11874 11875 Code and Data Size: Current and previous core subsystem library sizes are 11876 shown below. These are the code and data sizes for the acpica.lib 11877 produced 11878 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11879 any ACPI driver or OSPM code. The debug version of the code includes the 11880 debug output trace mechanism and has a much larger code and data size. 11881 Note 11882 that these values will vary depending on the efficiency of the compiler 11883 and 11884 the compiler options used during generation. 11885 11886 Previous Release: 11887 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 11888 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 11889 Current Release: 11890 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 11891 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 11892 11893 11894 2) iASL Compiler/Disassembler: 11895 11896 Fixed a problem with the Return operator with no arguments. Since the AML 11897 grammar for the byte encoding requires an operand for the Return opcode, 11898 the 11899 compiler now emits a Return(Zero) for this case. An ACPI specification 11900 update has been written for this case. 11901 11902 For tables other than the DSDT, namepath optimization is automatically 11903 disabled. This is because SSDTs can be loaded anywhere in the namespace, 11904 the 11905 compiler has no knowledge of where, and thus cannot optimize namepaths. 11906 11907 Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was 11908 inadvertently omitted from the ACPI specification, and will require an 11909 update to the spec. 11910 11911 The source file scan for ASCII characters is now optional (-a). This 11912 change 11913 was made because some vendors place non-ascii characters within comments. 11914 However, the scan is simply a brute-force byte compare to ensure all 11915 characters in the file are in the range 0x00 to 0x7F. 11916 11917 Fixed a problem with the CondRefOf operator where the compiler was 11918 inappropriately checking for the existence of the target. Since the point 11919 of 11920 the operator is to check for the existence of the target at run-time, the 11921 compiler no longer checks for the target existence. 11922 11923 Fixed a problem where errors generated from the internal AML interpreter 11924 during constant folding were not handled properly, causing a fault. 11925 11926 Fixed a problem with overly aggressive range checking for the Stall 11927 operator. The valid range (max 255) is now only checked if the operand is 11928 of 11929 type Integer. All other operand types cannot be statically checked. 11930 11931 Fixed a problem where control method references within the RefOf, 11932 DeRefOf, 11933 and ObjectType operators were not treated properly. They are now treated 11934 as 11935 actual references, not method invocations. 11936 11937 Fixed and enhanced the "list namespace" option (-ln). This option was 11938 broken 11939 a number of releases ago. 11940 11941 Improved error handling for the Field, IndexField, and BankField 11942 operators. 11943 The compiler now cleanly reports and recovers from errors in the field 11944 component (FieldUnit) list. 11945 11946 Fixed a disassembler problem where the optional ResourceDescriptor fields 11947 TRS and TTP were not always handled correctly. 11948 11949 Disassembler - Comments in output now use "//" instead of "/*" 11950 11951 ---------------------------------------- 11952 28 February 2005. Summary of changes for version 20050228: 11953 11954 1) ACPI CA Core Subsystem: 11955 11956 Fixed a problem where the result of an Index() operator (an object 11957 reference) must increment the reference count on the target object for 11958 the 11959 life of the object reference. 11960 11961 Implemented AML Interpreter and Debugger support for the new ACPI 3.0 11962 Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and 11963 WordSpace 11964 resource descriptors. 11965 11966 Implemented support in the _OSI method for the ACPI 3.0 "Extended Address 11967 Space Descriptor" string, indicating interpreter support for the 11968 descriptors 11969 above. 11970 11971 Implemented header support for the new ACPI 3.0 FADT flag bits. 11972 11973 Implemented header support for the new ACPI 3.0 PCI Express bits for the 11974 PM1 11975 status/enable registers. 11976 11977 Updated header support for the MADT processor local Apic struct and MADT 11978 platform interrupt source struct for new ACPI 3.0 fields. 11979 11980 Implemented header support for the SRAT and SLIT ACPI tables. 11981 11982 Implemented the -s switch in AcpiExec to enable the "InterpreterSlack" 11983 flag 11984 at runtime. 11985 11986 Code and Data Size: Current and previous core subsystem library sizes are 11987 shown below. These are the code and data sizes for the acpica.lib 11988 produced 11989 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11990 any ACPI driver or OSPM code. The debug version of the code includes the 11991 debug output trace mechanism and has a much larger code and data size. 11992 Note 11993 that these values will vary depending on the efficiency of the compiler 11994 and 11995 the compiler options used during generation. 11996 11997 Previous Release: 11998 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 11999 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 12000 Current Release: 12001 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 12002 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 12003 12004 12005 2) iASL Compiler/Disassembler: 12006 12007 Fixed a problem with the internal 64-bit String-to-integer conversion 12008 with 12009 strings less than two characters long. 12010 12011 Fixed a problem with constant folding where the result of the Index() 12012 operator can not be considered a constant. This means that Index() cannot 12013 be 12014 a type3 opcode and this will require an update to the ACPI specification. 12015 12016 Disassembler: Implemented support for the TTP, MTP, and TRS resource 12017 descriptor fields. These fields were inadvertently ignored and not output 12018 in 12019 the disassembly of the resource descriptor. 12020 12021 12022 ---------------------------------------- 12023 11 February 2005. Summary of changes for version 20050211: 12024 12025 1) ACPI CA Core Subsystem: 12026 12027 Implemented ACPI 3.0 support for implicit conversion within the Match() 12028 operator. MatchObjects can now be of type integer, buffer, or string 12029 instead 12030 of just type integer. Package elements are implicitly converted to the 12031 type 12032 of the MatchObject. This change aligns the behavior of Match() with the 12033 behavior of the other logical operators (LLess(), etc.) It also requires 12034 an 12035 errata change to the ACPI specification as this support was intended for 12036 ACPI 3.0, but was inadvertently omitted. 12037 12038 Fixed a problem with the internal implicit "to buffer" conversion. 12039 Strings 12040 that are converted to buffers will cause buffer truncation if the string 12041 is 12042 smaller than the target buffer. Integers that are converted to buffers 12043 will 12044 not cause buffer truncation, only zero extension (both as per the ACPI 12045 spec.) The problem was introduced when code was added to truncate the 12046 buffer, but this should not be performed in all cases, only the string 12047 case. 12048 12049 Fixed a problem with the Buffer and Package operators where the 12050 interpreter 12051 would get confused if two such operators were used as operands to an ASL 12052 operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result 12053 stack was not being popped after the execution of these operators, 12054 resulting 12055 in an AE_NO_RETURN_VALUE exception. 12056 12057 Fixed a problem with constructs of the form Store(Index(...),...). The 12058 reference object returned from Index was inadvertently resolved to an 12059 actual 12060 value. This problem was introduced in version 20050114 when the behavior 12061 of 12062 Store() was modified to restrict the object types that can be used as the 12063 source operand (to match the ACPI specification.) 12064 12065 Reduced excessive stack use within the AcpiGetObjectInfo procedure. 12066 12067 Added a fix to aclinux.h to allow generation of AcpiExec on Linux. 12068 12069 Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct. 12070 12071 Code and Data Size: Current and previous core subsystem library sizes are 12072 shown below. These are the code and data sizes for the acpica.lib 12073 produced 12074 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12075 any ACPI driver or OSPM code. The debug version of the code includes the 12076 debug output trace mechanism and has a much larger code and data size. 12077 Note 12078 that these values will vary depending on the efficiency of the compiler 12079 and 12080 the compiler options used during generation. 12081 12082 Previous Release: 12083 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 12084 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 12085 Current Release: 12086 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 12087 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 12088 12089 12090 2) iASL Compiler/Disassembler: 12091 12092 Fixed a code generation problem in the constant folding optimization code 12093 where incorrect code was generated if a constant was reduced to a buffer 12094 object (i.e., a reduced type 5 opcode.) 12095 12096 Fixed a typechecking problem for the ToBuffer operator. Caused by an 12097 incorrect return type in the internal opcode information table. 12098 12099 ---------------------------------------- 12100 25 January 2005. Summary of changes for version 20050125: 12101 12102 1) ACPI CA Core Subsystem: 12103 12104 Fixed a recently introduced problem with the Global Lock where the 12105 underlying semaphore was not created. This problem was introduced in 12106 version 20050114, and caused an AE_AML_NO_OPERAND exception during an 12107 Acquire() operation on _GL. 12108 12109 The local object cache is now optional, and is disabled by default. Both 12110 AcpiExec and the iASL compiler enable the cache because they run in user 12111 mode and this enhances their performance. #define 12112 ACPI_ENABLE_OBJECT_CACHE 12113 to enable the local cache. 12114 12115 Fixed an issue in the internal function AcpiUtEvaluateObject concerning 12116 the 12117 optional "implicit return" support where an error was returned if no 12118 return 12119 object was expected, but one was implicitly returned. AE_OK is now 12120 returned 12121 in this case and the implicitly returned object is deleted. 12122 AcpiUtEvaluateObject is only occasionally used, and only to execute 12123 reserved 12124 methods such as _STA and _INI where the return type is known up front. 12125 12126 Fixed a few issues with the internal convert-to-integer code. It now 12127 returns 12128 an error if an attempt is made to convert a null string, a string of only 12129 blanks/tabs, or a zero-length buffer. This affects both implicit 12130 conversion 12131 and explicit conversion via the ToInteger() operator. 12132 12133 The internal debug code in AcpiUtAcquireMutex has been commented out. It 12134 is 12135 not needed for normal operation and should increase the performance of 12136 the 12137 entire subsystem. The code remains in case it is needed for debug 12138 purposes 12139 again. 12140 12141 The AcpiExec source and makefile are included in the Unix/Linux package 12142 for 12143 the first time. 12144 12145 Code and Data Size: Current and previous core subsystem library sizes are 12146 shown below. These are the code and data sizes for the acpica.lib 12147 produced 12148 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12149 any ACPI driver or OSPM code. The debug version of the code includes the 12150 debug output trace mechanism and has a much larger code and data size. 12151 Note 12152 that these values will vary depending on the efficiency of the compiler 12153 and 12154 the compiler options used during generation. 12155 12156 Previous Release: 12157 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 12158 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 12159 Current Release: 12160 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 12161 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 12162 12163 2) iASL Compiler/Disassembler: 12164 12165 Switch/Case support: A warning is now issued if the type of the Switch 12166 value 12167 cannot be determined at compile time. For example, Switch(Arg0) will 12168 generate the warning, and the type is assumed to be an integer. As per 12169 the 12170 ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate 12171 the 12172 warning. 12173 12174 Switch/Case support: Implemented support for buffer and string objects as 12175 the switch value. This is an ACPI 3.0 feature, now that LEqual supports 12176 buffers and strings. 12177 12178 Switch/Case support: The emitted code for the LEqual() comparisons now 12179 uses 12180 the switch value as the first operand, not the second. The case value is 12181 now 12182 the second operand, and this allows the case value to be implicitly 12183 converted to the type of the switch value, not the other way around. 12184 12185 Switch/Case support: Temporary variables are now emitted immediately 12186 within 12187 the control method, not at the global level. This means that there are 12188 now 12189 36 temps available per-method, not 36 temps per-module as was the case 12190 with 12191 the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.) 12192 12193 ---------------------------------------- 12194 14 January 2005. Summary of changes for version 20050114: 12195 12196 Added 2005 copyright to all module headers. This affects every module in 12197 the core subsystem, iASL compiler, and the utilities. 12198 12199 1) ACPI CA Core Subsystem: 12200 12201 Fixed an issue with the String-to-Buffer conversion code where the string 12202 null terminator was not included in the buffer after conversion, but 12203 there 12204 is existing ASL that assumes the string null terminator is included. This 12205 is 12206 the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was 12207 introduced in the previous version when the code was updated to correctly 12208 set the converted buffer size as per the ACPI specification. The ACPI 12209 spec 12210 is ambiguous and will be updated to specify that the null terminator must 12211 be 12212 included in the converted buffer. This also affects the ToBuffer() ASL 12213 operator. 12214 12215 Fixed a problem with the Mid() ASL/AML operator where it did not work 12216 correctly on Buffer objects. Newly created sub-buffers were not being 12217 marked 12218 as initialized. 12219 12220 12221 Fixed a problem in AcpiTbFindTable where incorrect string compares were 12222 performed on the OemId and OemTableId table header fields. These fields 12223 are 12224 not null terminated, so strncmp is now used instead of strcmp. 12225 12226 Implemented a restriction on the Store() ASL/AML operator to align the 12227 behavior with the ACPI specification. Previously, any object could be 12228 used 12229 as the source operand. Now, the only objects that may be used are 12230 Integers, 12231 Buffers, Strings, Packages, Object References, and DDB Handles. If 12232 necessary, the original behavior can be restored by enabling the 12233 EnableInterpreterSlack flag. 12234 12235 Enhanced the optional "implicit return" support to allow an implicit 12236 return 12237 value from methods that are invoked externally via the AcpiEvaluateObject 12238 interface. This enables implicit returns from the _STA and _INI methods, 12239 for example. 12240 12241 Changed the Revision() ASL/AML operator to return the current version of 12242 the 12243 AML interpreter, in the YYYYMMDD format. Previously, it incorrectly 12244 returned 12245 the supported ACPI version (This is the function of the _REV method). 12246 12247 Updated the _REV predefined method to return the currently supported 12248 version 12249 of ACPI, now 3. 12250 12251 Implemented batch mode option for the AcpiExec utility (-b). 12252 12253 Code and Data Size: Current and previous core subsystem library sizes are 12254 shown below. These are the code and data sizes for the acpica.lib 12255 produced 12256 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12257 any ACPI driver or OSPM code. The debug version of the code includes the 12258 debug output trace mechanism and has a much larger code and data size. 12259 Note 12260 that these values will vary depending on the efficiency of the compiler 12261 and 12262 the compiler options used during generation. 12263 12264 Previous Release: 12265 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 12266 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 12267 Current Release: 12268 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 12269 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 12270 12271 ---------------------------------------- 12272 10 December 2004. Summary of changes for version 20041210: 12273 12274 ACPI 3.0 support is nearing completion in both the iASL compiler and the 12275 ACPI CA core subsystem. 12276 12277 1) ACPI CA Core Subsystem: 12278 12279 Fixed a problem in the ToDecimalString operator where the resulting 12280 string 12281 length was incorrectly calculated. The length is now calculated exactly, 12282 eliminating incorrect AE_STRING_LIMIT exceptions. 12283 12284 Fixed a problem in the ToHexString operator to allow a maximum 200 12285 character 12286 string to be produced. 12287 12288 Fixed a problem in the internal string-to-buffer and buffer-to-buffer 12289 copy 12290 routine where the length of the resulting buffer was not truncated to the 12291 new size (if the target buffer already existed). 12292 12293 Code and Data Size: Current and previous core subsystem library sizes are 12294 shown below. These are the code and data sizes for the acpica.lib 12295 produced 12296 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12297 any ACPI driver or OSPM code. The debug version of the code includes the 12298 debug output trace mechanism and has a much larger code and data size. 12299 Note 12300 that these values will vary depending on the efficiency of the compiler 12301 and 12302 the compiler options used during generation. 12303 12304 Previous Release: 12305 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 12306 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 12307 Current Release: 12308 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 12309 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 12310 12311 12312 2) iASL Compiler/Disassembler: 12313 12314 Implemented the new ACPI 3.0 resource template macros - DWordSpace, 12315 ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace. 12316 Includes support in the disassembler. 12317 12318 Implemented support for the new (ACPI 3.0) parameter to the Register 12319 macro, 12320 AccessSize. 12321 12322 Fixed a problem where the _HE resource name for the Interrupt macro was 12323 referencing bit 0 instead of bit 1. 12324 12325 Implemented check for maximum 255 interrupts in the Interrupt macro. 12326 12327 Fixed a problem with the predefined resource descriptor names where 12328 incorrect AML code was generated if the offset within the resource buffer 12329 was 0 or 1. The optimizer shortened the AML code to a single byte opcode 12330 but did not update the surrounding package lengths. 12331 12332 Changes to the Dma macro: All channels within the channel list must be 12333 in 12334 the range 0-7. Maximum 8 channels can be specified. BusMaster operand is 12335 optional (default is BusMaster). 12336 12337 Implemented check for maximum 7 data bytes for the VendorShort macro. 12338 12339 The ReadWrite parameter is now optional for the Memory32 and similar 12340 macros. 12341 12342 ---------------------------------------- 12343 03 December 2004. Summary of changes for version 20041203: 12344 12345 1) ACPI CA Core Subsystem: 12346 12347 The low-level field insertion/extraction code (exfldio) has been 12348 completely 12349 rewritten to eliminate unnecessary complexity, bugs, and boundary 12350 conditions. 12351 12352 Fixed a problem in the ToInteger, ToBuffer, ToHexString, and 12353 ToDecimalString 12354 operators where the input operand could be inadvertently deleted if no 12355 conversion was necessary (e.g., if the input to ToInteger was an Integer 12356 object.) 12357 12358 Fixed a problem with the ToDecimalString and ToHexString where an 12359 incorrect 12360 exception code was returned if the resulting string would be > 200 chars. 12361 AE_STRING_LIMIT is now returned. 12362 12363 Fixed a problem with the Concatenate operator where AE_OK was always 12364 returned, even if the operation failed. 12365 12366 Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128 12367 semaphores to be allocated. 12368 12369 Code and Data Size: Current and previous core subsystem library sizes are 12370 shown below. These are the code and data sizes for the acpica.lib 12371 produced 12372 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12373 any ACPI driver or OSPM code. The debug version of the code includes the 12374 debug output trace mechanism and has a much larger code and data size. 12375 Note 12376 that these values will vary depending on the efficiency of the compiler 12377 and 12378 the compiler options used during generation. 12379 12380 Previous Release: 12381 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 12382 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 12383 Current Release: 12384 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 12385 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 12386 12387 12388 2) iASL Compiler/Disassembler: 12389 12390 Fixed typechecking for the ObjectType and SizeOf operators. Problem was 12391 recently introduced in 20041119. 12392 12393 Fixed a problem with the ToUUID macro where the upper nybble of each 12394 buffer 12395 byte was inadvertently set to zero. 12396 12397 ---------------------------------------- 12398 19 November 2004. Summary of changes for version 20041119: 12399 12400 1) ACPI CA Core Subsystem: 12401 12402 Fixed a problem in the internal ConvertToInteger routine where new 12403 integers 12404 were not truncated to 32 bits for 32-bit ACPI tables. This routine 12405 converts 12406 buffers and strings to integers. 12407 12408 Implemented support to store a value to an Index() on a String object. 12409 This 12410 is an ACPI 2.0 feature that had not yet been implemented. 12411 12412 Implemented new behavior for storing objects to individual package 12413 elements 12414 (via the Index() operator). The previous behavior was to invoke the 12415 implicit 12416 conversion rules if an object was already present at the index. The new 12417 behavior is to simply delete any existing object and directly store the 12418 new 12419 object. Although the ACPI specification seems unclear on this subject, 12420 other 12421 ACPI implementations behave in this manner. (This is the root of the 12422 AE_BAD_HEX_CONSTANT issue.) 12423 12424 Modified the RSDP memory scan mechanism to support the extended checksum 12425 for 12426 ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid 12427 RSDP signature is found with a valid checksum. 12428 12429 Code and Data Size: Current and previous core subsystem library sizes are 12430 shown below. These are the code and data sizes for the acpica.lib 12431 produced 12432 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12433 any ACPI driver or OSPM code. The debug version of the code includes the 12434 debug output trace mechanism and has a much larger code and data size. 12435 Note 12436 that these values will vary depending on the efficiency of the compiler 12437 and 12438 the compiler options used during generation. 12439 12440 Previous Release: 12441 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 12442 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 12443 Current Release: 12444 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 12445 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 12446 12447 12448 2) iASL Compiler/Disassembler: 12449 12450 Fixed a missing semicolon in the aslcompiler.y file. 12451 12452 ---------------------------------------- 12453 05 November 2004. Summary of changes for version 20041105: 12454 12455 1) ACPI CA Core Subsystem: 12456 12457 Implemented support for FADT revision 2. This was an interim table 12458 (between 12459 ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register. 12460 12461 Implemented optional support to allow uninitialized LocalX and ArgX 12462 variables in a control method. The variables are initialized to an 12463 Integer 12464 object with a value of zero. This support is enabled by setting the 12465 AcpiGbl_EnableInterpreterSlack flag to TRUE. 12466 12467 Implemented support for Integer objects for the SizeOf operator. Either 12468 4 12469 or 8 is returned, depending on the current integer size (32-bit or 64- 12470 bit, 12471 depending on the parent table revision). 12472 12473 Fixed a problem in the implementation of the SizeOf and ObjectType 12474 operators 12475 where the operand was resolved to a value too early, causing incorrect 12476 return values for some objects. 12477 12478 Fixed some possible memory leaks during exceptional conditions. 12479 12480 Code and Data Size: Current and previous core subsystem library sizes are 12481 shown below. These are the code and data sizes for the acpica.lib 12482 produced 12483 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12484 any ACPI driver or OSPM code. The debug version of the code includes the 12485 debug output trace mechanism and has a much larger code and data size. 12486 Note 12487 that these values will vary depending on the efficiency of the compiler 12488 and 12489 the compiler options used during generation. 12490 12491 Previous Release: 12492 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 12493 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 12494 Current Release: 12495 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 12496 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 12497 12498 12499 2) iASL Compiler/Disassembler: 12500 12501 Implemented support for all ACPI 3.0 reserved names and methods. 12502 12503 Implemented all ACPI 3.0 grammar elements in the front-end, including 12504 support for semicolons. 12505 12506 Implemented the ACPI 3.0 Function() and ToUUID() macros 12507 12508 Fixed a problem in the disassembler where a Scope() operator would not be 12509 emitted properly if the target of the scope was in another table. 12510 12511 ---------------------------------------- 12512 15 October 2004. Summary of changes for version 20041015: 12513 12514 Note: ACPI CA is currently undergoing an in-depth and complete formal 12515 evaluation to test/verify the following areas. Other suggestions are 12516 welcome. This will result in an increase in the frequency of releases and 12517 the number of bug fixes in the next few months. 12518 - Functional tests for all ASL/AML operators 12519 - All implicit/explicit type conversions 12520 - Bit fields and operation regions 12521 - 64-bit math support and 32-bit-only "truncated" math support 12522 - Exceptional conditions, both compiler and interpreter 12523 - Dynamic object deletion and memory leaks 12524 - ACPI 3.0 support when implemented 12525 - External interfaces to the ACPI subsystem 12526 12527 12528 1) ACPI CA Core Subsystem: 12529 12530 Fixed two alignment issues on 64-bit platforms - within debug statements 12531 in 12532 AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the 12533 Address 12534 field within the non-aligned ACPI generic address structure. 12535 12536 Fixed a problem in the Increment and Decrement operators where incorrect 12537 operand resolution could result in the inadvertent modification of the 12538 original integer when the integer is passed into another method as an 12539 argument and the arg is then incremented/decremented. 12540 12541 Fixed a problem in the FromBCD operator where the upper 32-bits of a 64- 12542 bit 12543 BCD number were truncated during conversion. 12544 12545 Fixed a problem in the ToDecimal operator where the length of the 12546 resulting 12547 string could be set incorrectly too long if the input operand was a 12548 Buffer 12549 object. 12550 12551 Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte 12552 (0) 12553 within a buffer would prematurely terminate a compare between buffer 12554 objects. 12555 12556 Added a check for string overflow (>200 characters as per the ACPI 12557 specification) during the Concatenate operator with two string operands. 12558 12559 Code and Data Size: Current and previous core subsystem library sizes are 12560 shown below. These are the code and data sizes for the acpica.lib 12561 produced 12562 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12563 any ACPI driver or OSPM code. The debug version of the code includes the 12564 debug output trace mechanism and has a much larger code and data size. 12565 Note 12566 that these values will vary depending on the efficiency of the compiler 12567 and 12568 the compiler options used during generation. 12569 12570 Previous Release: 12571 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 12572 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 12573 Current Release: 12574 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 12575 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 12576 12577 12578 12579 2) iASL Compiler/Disassembler: 12580 12581 Allow the use of the ObjectType operator on uninitialized Locals and Args 12582 (returns 0 as per the ACPI specification). 12583 12584 Fixed a problem where the compiler would fault if there was a syntax 12585 error 12586 in the FieldName of all of the various CreateXXXField operators. 12587 12588 Disallow the use of lower case letters within the EISAID macro, as per 12589 the 12590 ACPI specification. All EISAID strings must be of the form "UUUNNNN" 12591 Where 12592 U is an uppercase letter and N is a hex digit. 12593 12594 12595 ---------------------------------------- 12596 06 October 2004. Summary of changes for version 20041006: 12597 12598 1) ACPI CA Core Subsystem: 12599 12600 Implemented support for the ACPI 3.0 Timer operator. This ASL function 12601 implements a 64-bit timer with 100 nanosecond granularity. 12602 12603 Defined a new OSL interface, AcpiOsGetTimer. This interface is used to 12604 implement the ACPI 3.0 Timer operator. This allows the host OS to 12605 implement 12606 the timer with the best clock available. Also, it keeps the core 12607 subsystem 12608 out of the clock handling business, since the host OS (usually) performs 12609 this function. 12610 12611 Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write) 12612 functions use a 64-bit address which is part of the packed ACPI Generic 12613 Address Structure. Since the structure is non-aligned, the alignment 12614 macros 12615 are now used to extract the address to a local variable before use. 12616 12617 Fixed a problem where the ToInteger operator assumed all input strings 12618 were 12619 hexadecimal. The operator now handles both decimal strings and hex 12620 strings 12621 (prefixed with "0x"). 12622 12623 Fixed a problem where the string length in the string object created as a 12624 result of the internal ConvertToString procedure could be incorrect. This 12625 potentially affected all implicit conversions and also the 12626 ToDecimalString 12627 and ToHexString operators. 12628 12629 Fixed two problems in the ToString operator. If the length parameter was 12630 zero, an incorrect string object was created and the value of the input 12631 length parameter was inadvertently changed from zero to Ones. 12632 12633 Fixed a problem where the optional ResourceSource string in the 12634 ExtendedIRQ 12635 resource macro was ignored. 12636 12637 Simplified the interfaces to the internal division functions, reducing 12638 code 12639 size and complexity. 12640 12641 Code and Data Size: Current and previous core subsystem library sizes are 12642 shown below. These are the code and data sizes for the acpica.lib 12643 produced 12644 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12645 any ACPI driver or OSPM code. The debug version of the code includes the 12646 debug output trace mechanism and has a much larger code and data size. 12647 Note 12648 that these values will vary depending on the efficiency of the compiler 12649 and 12650 the compiler options used during generation. 12651 12652 Previous Release: 12653 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 12654 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 12655 Current Release: 12656 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 12657 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 12658 12659 12660 2) iASL Compiler/Disassembler: 12661 12662 Implemented support for the ACPI 3.0 Timer operator. 12663 12664 Fixed a problem where the Default() operator was inadvertently ignored in 12665 a 12666 Switch/Case block. This was a problem in the translation of the Switch 12667 statement to If...Else pairs. 12668 12669 Added support to allow a standalone Return operator, with no parentheses 12670 (or 12671 operands). 12672 12673 Fixed a problem with code generation for the ElseIf operator where the 12674 translated Else...If parse tree was improperly constructed leading to the 12675 loss of some code. 12676 12677 ---------------------------------------- 12678 22 September 2004. Summary of changes for version 20040922: 12679 12680 1) ACPI CA Core Subsystem: 12681 12682 Fixed a problem with the implementation of the LNot() operator where 12683 "Ones" 12684 was not returned for the TRUE case. Changed the code to return Ones 12685 instead 12686 of (!Arg) which was usually 1. This change affects iASL constant folding 12687 for 12688 this operator also. 12689 12690 Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was 12691 not 12692 initialized properly -- Now zero the entire buffer in this case where the 12693 buffer already exists. 12694 12695 Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32 12696 Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all 12697 related code considerably. This will require changes/updates to all OS 12698 interface layers (OSLs.) 12699 12700 Implemented a new external interface, AcpiInstallExceptionHandler, to 12701 allow 12702 a system exception handler to be installed. This handler is invoked upon 12703 any 12704 run-time exception that occurs during control method execution. 12705 12706 Added support for the DSDT in AcpiTbFindTable. This allows the 12707 DataTableRegion() operator to access the local copy of the DSDT. 12708 12709 Code and Data Size: Current and previous core subsystem library sizes are 12710 shown below. These are the code and data sizes for the acpica.lib 12711 produced 12712 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12713 any ACPI driver or OSPM code. The debug version of the code includes the 12714 debug output trace mechanism and has a much larger code and data size. 12715 Note 12716 that these values will vary depending on the efficiency of the compiler 12717 and 12718 the compiler options used during generation. 12719 12720 Previous Release: 12721 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 12722 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 12723 Current Release: 12724 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 12725 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 12726 12727 12728 2) iASL Compiler/Disassembler: 12729 12730 Fixed a problem with constant folding and the LNot operator. LNot was 12731 returning 1 in the TRUE case, not Ones as per the ACPI specification. 12732 This 12733 could result in the generation of an incorrect folded/reduced constant. 12734 12735 End-Of-File is now allowed within a "//"-style comment. A parse error no 12736 longer occurs if such a comment is at the very end of the input ASL 12737 source 12738 file. 12739 12740 Implemented the "-r" option to override the Revision in the table header. 12741 The initial use of this option will be to simplify the evaluation of the 12742 AML 12743 interpreter by allowing a single ASL source module to be compiled for 12744 either 12745 32-bit or 64-bit integers. 12746 12747 12748 ---------------------------------------- 12749 27 August 2004. Summary of changes for version 20040827: 12750 12751 1) ACPI CA Core Subsystem: 12752 12753 - Implemented support for implicit object conversion in the non-numeric 12754 logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual, 12755 and 12756 LNotEqual.) Any combination of Integers/Strings/Buffers may now be used; 12757 the second operand is implicitly converted on the fly to match the type 12758 of 12759 the first operand. For example: 12760 12761 LEqual (Source1, Source2) 12762 12763 Source1 and Source2 must each evaluate to an integer, a string, or a 12764 buffer. 12765 The data type of Source1 dictates the required type of Source2. Source2 12766 is 12767 implicitly converted if necessary to match the type of Source1. 12768 12769 - Updated and corrected the behavior of the string conversion support. 12770 The 12771 rules concerning conversion of buffers to strings (according to the ACPI 12772 specification) are as follows: 12773 12774 ToDecimalString - explicit byte-wise conversion of buffer to string of 12775 decimal values (0-255) separated by commas. ToHexString - explicit byte- 12776 wise 12777 conversion of buffer to string of hex values (0-FF) separated by commas. 12778 ToString - explicit byte-wise conversion of buffer to string. Byte-by- 12779 byte 12780 copy with no transform except NULL terminated. Any other implicit buffer- 12781 to- 12782 string conversion - byte-wise conversion of buffer to string of hex 12783 values 12784 (0-FF) separated by spaces. 12785 12786 - Fixed typo in definition of AcpiGbl_EnableInterpreterSlack. 12787 12788 - Fixed a problem in AcpiNsGetPathnameLength where the returned length 12789 was 12790 one byte too short in the case of a node in the root scope. This could 12791 cause a fault during debug output. 12792 12793 - Code and Data Size: Current and previous core subsystem library sizes 12794 are 12795 shown below. These are the code and data sizes for the acpica.lib 12796 produced 12797 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12798 any ACPI driver or OSPM code. The debug version of the code includes the 12799 debug output trace mechanism and has a much larger code and data size. 12800 Note 12801 that these values will vary depending on the efficiency of the compiler 12802 and 12803 the compiler options used during generation. 12804 12805 Previous Release: 12806 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 12807 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 12808 Current Release: 12809 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 12810 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 12811 12812 12813 2) iASL Compiler/Disassembler: 12814 12815 - Fixed a Linux generation error. 12816 12817 12818 ---------------------------------------- 12819 16 August 2004. Summary of changes for version 20040816: 12820 12821 1) ACPI CA Core Subsystem: 12822 12823 Designed and implemented support within the AML interpreter for the so- 12824 called "implicit return". This support returns the result of the last 12825 ASL 12826 operation within a control method, in the absence of an explicit Return() 12827 operator. A few machines depend on this behavior, even though it is not 12828 explicitly supported by the ASL language. It is optional support that 12829 can 12830 be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag. 12831 12832 Removed support for the PCI_Config address space from the internal low 12833 level 12834 hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This 12835 support was not used internally, and would not work correctly anyway 12836 because 12837 the PCI bus number and segment number were not supported. There are 12838 separate interfaces for PCI configuration space access because of the 12839 unique 12840 interface. 12841 12842 Code and Data Size: Current and previous core subsystem library sizes are 12843 shown below. These are the code and data sizes for the acpica.lib 12844 produced 12845 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12846 any ACPI driver or OSPM code. The debug version of the code includes the 12847 debug output trace mechanism and has a much larger code and data size. 12848 Note 12849 that these values will vary depending on the efficiency of the compiler 12850 and 12851 the compiler options used during generation. 12852 12853 Previous Release: 12854 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 12855 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 12856 Current Release: 12857 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 12858 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 12859 12860 12861 2) iASL Compiler/Disassembler: 12862 12863 Fixed a problem where constants in ASL expressions at the root level (not 12864 within a control method) could be inadvertently truncated during code 12865 generation. This problem was introduced in the 20040715 release. 12866 12867 12868 ---------------------------------------- 12869 15 July 2004. Summary of changes for version 20040715: 12870 12871 1) ACPI CA Core Subsystem: 12872 12873 Restructured the internal HW GPE interfaces to pass/track the current 12874 state 12875 of interrupts (enabled/disabled) in order to avoid possible deadlock and 12876 increase flexibility of the interfaces. 12877 12878 Implemented a "lexicographical compare" for String and Buffer objects 12879 within 12880 the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual - 12881 - 12882 as per further clarification to the ACPI specification. Behavior is 12883 similar 12884 to C library "strcmp". 12885 12886 Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable 12887 external function. In the 32-bit non-debug case, the stack use has been 12888 reduced from 168 bytes to 32 bytes. 12889 12890 Deployed a new run-time configuration flag, 12891 AcpiGbl_EnableInterpreterSlack, 12892 whose purpose is to allow the AML interpreter to forgive certain bad AML 12893 constructs. Default setting is FALSE. 12894 12895 Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field 12896 IO 12897 support code. If enabled, it allows field access to go beyond the end of 12898 a 12899 region definition if the field is within the region length rounded up to 12900 the 12901 next access width boundary (a common coding error.) 12902 12903 Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to 12904 ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also, 12905 these 12906 symbols are lowercased by the latest version of the AcpiSrc tool. 12907 12908 The prototypes for the PCI interfaces in acpiosxf.h have been updated to 12909 rename "Register" to simply "Reg" to prevent certain compilers from 12910 complaining. 12911 12912 Code and Data Size: Current and previous core subsystem library sizes are 12913 shown below. These are the code and data sizes for the acpica.lib 12914 produced 12915 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12916 any ACPI driver or OSPM code. The debug version of the code includes the 12917 debug output trace mechanism and has a much larger code and data size. 12918 Note 12919 that these values will vary depending on the efficiency of the compiler 12920 and 12921 the compiler options used during generation. 12922 12923 Previous Release: 12924 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 12925 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 12926 Current Release: 12927 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 12928 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 12929 12930 12931 2) iASL Compiler/Disassembler: 12932 12933 Implemented full support for Package objects within the Case() operator. 12934 Note: The Break() operator is currently not supported within Case blocks 12935 (TermLists) as there is some question about backward compatibility with 12936 ACPI 12937 1.0 interpreters. 12938 12939 12940 Fixed a problem where complex terms were not supported properly within 12941 the 12942 Switch() operator. 12943 12944 Eliminated extraneous warning for compiler-emitted reserved names of the 12945 form "_T_x". (Used in Switch/Case operators.) 12946 12947 Eliminated optimization messages for "_T_x" objects and small constants 12948 within the DefinitionBlock operator. 12949 12950 12951 ---------------------------------------- 12952 15 June 2004. Summary of changes for version 20040615: 12953 12954 1) ACPI CA Core Subsystem: 12955 12956 Implemented support for Buffer and String objects (as per ACPI 2.0) for 12957 the 12958 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 12959 LLessEqual. 12960 12961 All directory names in the entire source package are lower case, as they 12962 were in earlier releases. 12963 12964 Implemented "Disassemble" command in the AML debugger that will 12965 disassemble 12966 a single control method. 12967 12968 Code and Data Size: Current and previous core subsystem library sizes are 12969 shown below. These are the code and data sizes for the acpica.lib 12970 produced 12971 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12972 any ACPI driver or OSPM code. The debug version of the code includes the 12973 debug output trace mechanism and has a much larger code and data size. 12974 Note 12975 that these values will vary depending on the efficiency of the compiler 12976 and 12977 the compiler options used during generation. 12978 12979 Previous Release: 12980 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 12981 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 12982 12983 Current Release: 12984 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 12985 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 12986 12987 12988 2) iASL Compiler/Disassembler: 12989 12990 Implemented support for Buffer and String objects (as per ACPI 2.0) for 12991 the 12992 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 12993 LLessEqual. 12994 12995 All directory names in the entire source package are lower case, as they 12996 were in earlier releases. 12997 12998 Fixed a fault when using the -g or -d<nofilename> options if the FADT was 12999 not found. 13000 13001 Fixed an issue with the Windows version of the compiler where later 13002 versions 13003 of Windows place the FADT in the registry under the name "FADT" and not 13004 "FACP" as earlier versions did. This applies when using the -g or - 13005 d<nofilename> options. The compiler now looks for both strings as 13006 necessary. 13007 13008 Fixed a problem with compiler namepath optimization where a namepath 13009 within 13010 the Scope() operator could not be optimized if the namepath was a subpath 13011 of 13012 the current scope path. 13013 13014 ---------------------------------------- 13015 27 May 2004. Summary of changes for version 20040527: 13016 13017 1) ACPI CA Core Subsystem: 13018 13019 Completed a new design and implementation for EBDA (Extended BIOS Data 13020 Area) 13021 support in the RSDP scan code. The original code improperly scanned for 13022 the 13023 EBDA by simply scanning from memory location 0 to 0x400. The correct 13024 method 13025 is to first obtain the EBDA pointer from within the BIOS data area, then 13026 scan 1K of memory starting at the EBDA pointer. There appear to be few 13027 if 13028 any machines that place the RSDP in the EBDA, however. 13029 13030 Integrated a fix for a possible fault during evaluation of BufferField 13031 arguments. Obsolete code that was causing the problem was removed. 13032 13033 Found and fixed a problem in the Field Support Code where data could be 13034 corrupted on a bit field read that starts on an aligned boundary but does 13035 not end on an aligned boundary. Merged the read/write "datum length" 13036 calculation code into a common procedure. 13037 13038 Rolled in a couple of changes to the FreeBSD-specific header. 13039 13040 13041 Code and Data Size: Current and previous core subsystem library sizes are 13042 shown below. These are the code and data sizes for the acpica.lib 13043 produced 13044 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 13045 any ACPI driver or OSPM code. The debug version of the code includes the 13046 debug output trace mechanism and has a much larger code and data size. 13047 Note 13048 that these values will vary depending on the efficiency of the compiler 13049 and 13050 the compiler options used during generation. 13051 13052 Previous Release: 13053 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 13054 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 13055 Current Release: 13056 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 13057 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 13058 13059 13060 2) iASL Compiler/Disassembler: 13061 13062 Fixed a generation warning produced by some overly-verbose compilers for 13063 a 13064 64-bit constant. 13065 13066 ---------------------------------------- 13067 14 May 2004. Summary of changes for version 20040514: 13068 13069 1) ACPI CA Core Subsystem: 13070 13071 Fixed a problem where hardware GPE enable bits sometimes not set properly 13072 during and after GPE method execution. Result of 04/27 changes. 13073 13074 Removed extra "clear all GPEs" when sleeping/waking. 13075 13076 Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single 13077 AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above 13078 to 13079 the new AcpiEv* calls as appropriate. 13080 13081 ACPI_OS_NAME was removed from the OS-specific headers. The default name 13082 is 13083 now "Microsoft Windows NT" for maximum compatibility. However this can 13084 be 13085 changed by modifying the acconfig.h file. 13086 13087 Allow a single invocation of AcpiInstallNotifyHandler for a handler that 13088 traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag. 13089 13090 Run _INI methods on ThermalZone objects. This is against the ACPI 13091 specification, but there is apparently ASL code in the field that has 13092 these 13093 _INI methods, and apparently "other" AML interpreters execute them. 13094 13095 Performed a full 16/32/64 bit lint that resulted in some small changes. 13096 13097 Added a sleep simulation command to the AML debugger to test sleep code. 13098 13099 Code and Data Size: Current and previous core subsystem library sizes are 13100 shown below. These are the code and data sizes for the acpica.lib 13101 produced 13102 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 13103 any ACPI driver or OSPM code. The debug version of the code includes the 13104 debug output trace mechanism and has a much larger code and data size. 13105 Note 13106 that these values will vary depending on the efficiency of the compiler 13107 and 13108 the compiler options used during generation. 13109 13110 Previous Release: 13111 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 13112 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 13113 Current Release: 13114 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 13115 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 13116 13117 ---------------------------------------- 13118 27 April 2004. Summary of changes for version 20040427: 13119 13120 1) ACPI CA Core Subsystem: 13121 13122 Completed a major overhaul of the GPE handling within ACPI CA. There are 13123 now three types of GPEs: wake-only, runtime-only, and combination 13124 wake/run. 13125 The only GPEs allowed to be combination wake/run are for button-style 13126 devices such as a control-method power button, control-method sleep 13127 button, 13128 or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are 13129 not 13130 referenced by any _PRW methods are marked for "runtime" and hardware 13131 enabled. Any GPE that is referenced by a _PRW method is marked for 13132 "wake" 13133 (and disabled at runtime). However, at sleep time, only those GPEs that 13134 have been specifically enabled for wake via the AcpiEnableGpe interface 13135 will 13136 actually be hardware enabled. 13137 13138 A new external interface has been added, AcpiSetGpeType(), that is meant 13139 to 13140 be used by device drivers to force a GPE to a particular type. It will 13141 be 13142 especially useful for the drivers for the button devices mentioned above. 13143 13144 Completed restructuring of the ACPI CA initialization sequence so that 13145 default operation region handlers are installed before GPEs are 13146 initialized 13147 and the _PRW methods are executed. This will prevent errors when the 13148 _PRW 13149 methods attempt to access system memory or I/O space. 13150 13151 GPE enable/disable no longer reads the GPE enable register. We now keep 13152 the 13153 enable info for runtime and wake separate and in the GPE_EVENT_INFO. We 13154 thus no longer depend on the hardware to maintain these bits. 13155 13156 Always clear the wake status and fixed/GPE status bits before sleep, even 13157 for state S5. 13158 13159 Improved the AML debugger output for displaying the GPE blocks and their 13160 current status. 13161 13162 Added new strings for the _OSI method, of the form "Windows 2001 SPx" 13163 where 13164 x = 0,1,2,3,4. 13165 13166 Fixed a problem where the physical address was incorrectly calculated 13167 when 13168 the Load() operator was used to directly load from an Operation Region 13169 (vs. 13170 loading from a Field object.) Also added check for minimum table length 13171 for 13172 this case. 13173 13174 Fix for multiple mutex acquisition. Restore original thread SyncLevel on 13175 mutex release. 13176 13177 Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for 13178 consistency with the other fields returned. 13179 13180 Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such 13181 structure for each GPE in the system, so the size of this structure is 13182 important. 13183 13184 CPU stack requirement reduction: Cleaned up the method execution and 13185 object 13186 evaluation paths so that now a parameter structure is passed, instead of 13187 copying the various method parameters over and over again. 13188 13189 In evregion.c: Correctly exit and reenter the interpreter region if and 13190 only if dispatching an operation region request to a user-installed 13191 handler. 13192 Do not exit/reenter when dispatching to a default handler (e.g., default 13193 system memory or I/O handlers) 13194 13195 13196 Notes for updating drivers for the new GPE support. The following 13197 changes 13198 must be made to ACPI-related device drivers that are attached to one or 13199 more 13200 GPEs: (This information will be added to the ACPI CA Programmer 13201 Reference.) 13202 13203 1) AcpiInstallGpeHandler no longer automatically enables the GPE, you 13204 must 13205 explicitly call AcpiEnableGpe. 13206 2) There is a new interface called AcpiSetGpeType. This should be called 13207 before enabling the GPE. Also, this interface will automatically disable 13208 the GPE if it is currently enabled. 13209 3) AcpiEnableGpe no longer supports a GPE type flag. 13210 13211 Specific drivers that must be changed: 13212 1) EC driver: 13213 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED, 13214 AeGpeHandler, NULL); 13215 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME); 13216 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR); 13217 13218 2) Button Drivers (Power, Lid, Sleep): 13219 Run _PRW method under parent device 13220 If _PRW exists: /* This is a control-method button */ 13221 Extract GPE number and possibly GpeDevice 13222 AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN); 13223 AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR); 13224 13225 For all other devices that have _PRWs, we automatically set the GPE type 13226 to 13227 ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled. 13228 This 13229 must be done on a selective basis, usually requiring some kind of user 13230 app 13231 to allow the user to pick the wake devices. 13232 13233 13234 Code and Data Size: Current and previous core subsystem library sizes are 13235 shown below. These are the code and data sizes for the acpica.lib 13236 produced 13237 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 13238 any ACPI driver or OSPM code. The debug version of the code includes the 13239 debug output trace mechanism and has a much larger code and data size. 13240 Note 13241 that these values will vary depending on the efficiency of the compiler 13242 and 13243 the compiler options used during generation. 13244 13245 Previous Release: 13246 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 13247 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 13248 Current Release: 13249 13250 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 13251 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 13252 13253 13254 13255 ---------------------------------------- 13256 02 April 2004. Summary of changes for version 20040402: 13257 13258 1) ACPI CA Core Subsystem: 13259 13260 Fixed an interpreter problem where an indirect store through an ArgX 13261 parameter was incorrectly applying the "implicit conversion rules" during 13262 the store. From the ACPI specification: "If the target is a method local 13263 or 13264 argument (LocalX or ArgX), no conversion is performed and the result is 13265 stored directly to the target". The new behavior is to disable implicit 13266 conversion during ALL stores to an ArgX. 13267 13268 Changed the behavior of the _PRW method scan to ignore any and all errors 13269 returned by a given _PRW. This prevents the scan from aborting from the 13270 failure of any single _PRW. 13271 13272 Moved the runtime configuration parameters from the global init procedure 13273 to 13274 static variables in acglobal.h. This will allow the host to override the 13275 default values easily. 13276 13277 Code and Data Size: Current and previous core subsystem library sizes are 13278 shown below. These are the code and data sizes for the acpica.lib 13279 produced 13280 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 13281 any ACPI driver or OSPM code. The debug version of the code includes the 13282 debug output trace mechanism and has a much larger code and data size. 13283 Note 13284 that these values will vary depending on the efficiency of the compiler 13285 and 13286 the compiler options used during generation. 13287 13288 Previous Release: 13289 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 13290 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 13291 Current Release: 13292 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 13293 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 13294 13295 13296 2) iASL Compiler/Disassembler: 13297 13298 iASL now fully disassembles SSDTs. However, External() statements are 13299 not 13300 generated automatically for unresolved symbols at this time. This is a 13301 planned feature for future implementation. 13302 13303 Fixed a scoping problem in the disassembler that occurs when the type of 13304 the 13305 target of a Scope() operator is overridden. This problem caused an 13306 incorrectly nested internal namespace to be constructed. 13307 13308 Any warnings or errors that are emitted during disassembly are now 13309 commented 13310 out automatically so that the resulting file can be recompiled without 13311 any 13312 hand editing. 13313 13314 ---------------------------------------- 13315 26 March 2004. Summary of changes for version 20040326: 13316 13317 1) ACPI CA Core Subsystem: 13318 13319 Implemented support for "wake" GPEs via interaction between GPEs and the 13320 _PRW methods. Every GPE that is pointed to by one or more _PRWs is 13321 identified as a WAKE GPE and by default will no longer be enabled at 13322 runtime. Previously, we were blindly enabling all GPEs with a 13323 corresponding 13324 _Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway. 13325 We 13326 believe this has been the cause of thousands of "spurious" GPEs on some 13327 systems. 13328 13329 This new GPE behavior is can be reverted to the original behavior (enable 13330 ALL GPEs at runtime) via a runtime flag. 13331 13332 Fixed a problem where aliased control methods could not access objects 13333 properly. The proper scope within the namespace was not initialized 13334 (transferred to the target of the aliased method) before executing the 13335 target method. 13336 13337 Fixed a potential race condition on internal object deletion on the 13338 return 13339 object in AcpiEvaluateObject. 13340 13341 Integrated a fix for resource descriptors where both _MEM and _MTP were 13342 being extracted instead of just _MEM. (i.e. bitmask was incorrectly too 13343 wide, 0x0F instead of 0x03.) 13344 13345 Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName, 13346 preventing 13347 a 13348 fault in some cases. 13349 13350 Updated Notify() values for debug statements in evmisc.c 13351 13352 Return proper status from AcpiUtMutexInitialize, not just simply AE_OK. 13353 13354 Code and Data Size: Current and previous core subsystem library sizes are 13355 shown below. These are the code and data sizes for the acpica.lib 13356 produced 13357 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 13358 any ACPI driver or OSPM code. The debug version of the code includes the 13359 debug output trace mechanism and has a much larger code and data size. 13360 Note 13361 that these values will vary depending on the efficiency of the compiler 13362 and 13363 the compiler options used during generation. 13364 13365 Previous Release: 13366 13367 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 13368 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 13369 Current Release: 13370 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 13371 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 13372 13373 ---------------------------------------- 13374 11 March 2004. Summary of changes for version 20040311: 13375 13376 1) ACPI CA Core Subsystem: 13377 13378 Fixed a problem where errors occurring during the parse phase of control 13379 method execution did not abort cleanly. For example, objects created and 13380 installed in the namespace were not deleted. This caused all subsequent 13381 invocations of the method to return the AE_ALREADY_EXISTS exception. 13382 13383 Implemented a mechanism to force a control method to "Serialized" 13384 execution 13385 if the method attempts to create namespace objects. (The root of the 13386 AE_ALREADY_EXISTS problem.) 13387 13388 Implemented support for the predefined _OSI "internal" control method. 13389 Initial supported strings are "Linux", "Windows 2000", "Windows 2001", 13390 and 13391 "Windows 2001.1", and can be easily upgraded for new strings as 13392 necessary. 13393 This feature will allow "other" operating systems to execute the fully 13394 tested, "Windows" code path through the ASL code 13395 13396 Global Lock Support: Now allows multiple acquires and releases with any 13397 internal thread. Removed concept of "owning thread" for this special 13398 mutex. 13399 13400 Fixed two functions that were inappropriately declaring large objects on 13401 the 13402 CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage 13403 during 13404 method execution considerably. 13405 13406 Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the 13407 S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT. 13408 13409 Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs 13410 defined on the machine. 13411 13412 Implemented two runtime options: One to force all control method 13413 execution 13414 to "Serialized" to mimic Windows behavior, another to disable _OSI 13415 support 13416 if it causes problems on a given machine. 13417 13418 Code and Data Size: Current and previous core subsystem library sizes are 13419 shown below. These are the code and data sizes for the acpica.lib 13420 produced 13421 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 13422 any ACPI driver or OSPM code. The debug version of the code includes the 13423 debug output trace mechanism and has a much larger code and data size. 13424 Note 13425 that these values will vary depending on the efficiency of the compiler 13426 and 13427 the compiler options used during generation. 13428 13429 Previous Release: 13430 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 13431 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 13432 Current Release: 13433 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 13434 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 13435 13436 2) iASL Compiler/Disassembler: 13437 13438 Fixed an array size problem for FreeBSD that would cause the compiler to 13439 fault. 13440 13441 ---------------------------------------- 13442 20 February 2004. Summary of changes for version 20040220: 13443 13444 13445 1) ACPI CA Core Subsystem: 13446 13447 Implemented execution of _SxD methods for Device objects in the 13448 GetObjectInfo interface. 13449 13450 Fixed calls to _SST method to pass the correct arguments. 13451 13452 Added a call to _SST on wake to restore to "working" state. 13453 13454 Check for End-Of-Buffer failure case in the WalkResources interface. 13455 13456 Integrated fix for 64-bit alignment issue in acglobal.h by moving two 13457 structures to the beginning of the file. 13458 13459 After wake, clear GPE status register(s) before enabling GPEs. 13460 13461 After wake, clear/enable power button. (Perhaps we should clear/enable 13462 all 13463 fixed events upon wake.) 13464 13465 Fixed a couple of possible memory leaks in the Namespace manager. 13466 13467 Integrated latest acnetbsd.h file. 13468 13469 ---------------------------------------- 13470 11 February 2004. Summary of changes for version 20040211: 13471 13472 13473 1) ACPI CA Core Subsystem: 13474 13475 Completed investigation and implementation of the call-by-reference 13476 mechanism for control method arguments. 13477 13478 Fixed a problem where a store of an object into an indexed package could 13479 fail if the store occurs within a different method than the method that 13480 created the package. 13481 13482 Fixed a problem where the ToDecimal operator could return incorrect 13483 results. 13484 13485 Fixed a problem where the CopyObject operator could fail on some of the 13486 more 13487 obscure objects (e.g., Reference objects.) 13488 13489 Improved the output of the Debug object to display buffer, package, and 13490 index objects. 13491 13492 Fixed a problem where constructs of the form "RefOf (ArgX)" did not 13493 return 13494 the expected result. 13495 13496 Added permanent ACPI_REPORT_ERROR macros for all instances of the 13497 ACPI_AML_INTERNAL exception. 13498 13499 Integrated latest version of acfreebsd.h 13500 13501 ---------------------------------------- 13502 16 January 2004. Summary of changes for version 20040116: 13503 13504 The purpose of this release is primarily to update the copyright years in 13505 each module, thus causing a huge number of diffs. There are a few small 13506 functional changes, however. 13507 13508 1) ACPI CA Core Subsystem: 13509 13510 Improved error messages when there is a problem finding one or more of 13511 the 13512 required base ACPI tables 13513 13514 Reintroduced the definition of APIC_HEADER in actbl.h 13515 13516 Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h) 13517 13518 Removed extraneous reference to NewObj in dsmthdat.c 13519 13520 2) iASL compiler 13521 13522 Fixed a problem introduced in December that disabled the correct 13523 disassembly 13524 of Resource Templates 13525 13526 13527 ---------------------------------------- 13528 03 December 2003. Summary of changes for version 20031203: 13529 13530 1) ACPI CA Core Subsystem: 13531 13532 Changed the initialization of Operation Regions during subsystem 13533 init to perform two entire walks of the ACPI namespace; The first 13534 to initialize the regions themselves, the second to execute the 13535 _REG methods. This fixed some interdependencies across _REG 13536 methods found on some machines. 13537 13538 Fixed a problem where a Store(Local0, Local1) could simply update 13539 the object reference count, and not create a new copy of the 13540 object if the Local1 is uninitialized. 13541 13542 Implemented support for the _SST reserved method during sleep 13543 transitions. 13544 13545 Implemented support to clear the SLP_TYP and SLP_EN bits when 13546 waking up, this is apparently required by some machines. 13547 13548 When sleeping, clear the wake status only if SleepState is not S5. 13549 13550 Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect 13551 pointer arithmetic advanced a string pointer too far. 13552 13553 Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer 13554 could be returned if the requested table has not been loaded. 13555 13556 Within the support for IRQ resources, restructured the handling of 13557 the active and edge/level bits. 13558 13559 Fixed a few problems in AcpiPsxExecute() where memory could be 13560 leaked under certain error conditions. 13561 13562 Improved error messages for the cases where the ACPI mode could 13563 not be entered. 13564 13565 Code and Data Size: Current and previous core subsystem library 13566 sizes are shown below. These are the code and data sizes for the 13567 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 13568 these values do not include any ACPI driver or OSPM code. The 13569 debug version of the code includes the debug output trace 13570 mechanism and has a much larger code and data size. Note that 13571 these values will vary depending on the efficiency of the compiler 13572 and the compiler options used during generation. 13573 13574 Previous Release (20031029): 13575 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 13576 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 13577 Current Release: 13578 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 13579 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 13580 13581 2) iASL Compiler/Disassembler: 13582 13583 Implemented a fix for the iASL disassembler where a bad index was 13584 generated. This was most noticeable on 64-bit platforms 13585 13586 13587 ---------------------------------------- 13588 29 October 2003. Summary of changes for version 20031029: 13589 13590 1) ACPI CA Core Subsystem: 13591 13592 13593 Fixed a problem where a level-triggered GPE with an associated 13594 _Lxx control method was incorrectly cleared twice. 13595 13596 Fixed a problem with the Field support code where an access can 13597 occur beyond the end-of-region if the field is non-aligned but 13598 extends to the very end of the parent region (resulted in an 13599 AE_AML_REGION_LIMIT exception.) 13600 13601 Fixed a problem with ACPI Fixed Events where an RT Clock handler 13602 would not get invoked on an RTC event. The RTC event bitmasks for 13603 the PM1 registers were not being initialized properly. 13604 13605 Implemented support for executing _STA and _INI methods for 13606 Processor objects. Although this is currently not part of the 13607 ACPI specification, there is existing ASL code that depends on the 13608 init-time execution of these methods. 13609 13610 Implemented and deployed a GetDescriptorName function to decode 13611 the various types of internal descriptors. Guards against null 13612 descriptors during debug output also. 13613 13614 Implemented and deployed a GetNodeName function to extract the 4- 13615 character namespace node name. This function simplifies the debug 13616 and error output, as well as guarding against null pointers during 13617 output. 13618 13619 Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to 13620 simplify the debug and error output of 64-bit integers. This 13621 macro replaces the HIDWORD and LODWORD macros for dumping these 13622 integers. 13623 13624 Updated the implementation of the Stall() operator to only call 13625 AcpiOsStall(), and also return an error if the operand is larger 13626 than 255. This preserves the required behavior of not 13627 relinquishing the processor, as would happen if AcpiOsSleep() was 13628 called for "long stalls". 13629 13630 Constructs of the form "Store(LocalX,LocalX)" where LocalX is not 13631 initialized are now treated as NOOPs. 13632 13633 Cleaned up a handful of warnings during 64-bit generation. 13634 13635 Fixed a reported error where and incorrect GPE number was passed 13636 to the GPE dispatch handler. This value is only used for error 13637 output, however. Used this opportunity to clean up and streamline 13638 the GPE dispatch code. 13639 13640 Code and Data Size: Current and previous core subsystem library 13641 sizes are shown below. These are the code and data sizes for the 13642 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 13643 these values do not include any ACPI driver or OSPM code. The 13644 13645 debug version of the code includes the debug output trace 13646 mechanism and has a much larger code and data size. Note that 13647 these values will vary depending on the efficiency of the compiler 13648 and the compiler options used during generation. 13649 13650 Previous Release (20031002): 13651 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 13652 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 13653 Current Release: 13654 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 13655 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 13656 13657 13658 2) iASL Compiler/Disassembler: 13659 13660 Updated the iASL compiler to return an error if the operand to the 13661 Stall() operator is larger than 255. 13662 13663 13664 ---------------------------------------- 13665 02 October 2003. Summary of changes for version 20031002: 13666 13667 13668 1) ACPI CA Core Subsystem: 13669 13670 Fixed a problem with Index Fields where the index was not 13671 incremented for fields that require multiple writes to the 13672 index/data registers (Fields that are wider than the data 13673 register.) 13674 13675 Fixed a problem with all Field objects where a write could go 13676 beyond the end-of-field if the field was larger than the access 13677 granularity and therefore required multiple writes to complete the 13678 request. An extra write beyond the end of the field could happen 13679 inadvertently. 13680 13681 Fixed a problem with Index Fields where a BUFFER_OVERFLOW error 13682 would incorrectly be returned if the width of the Data Register 13683 was larger than the specified field access width. 13684 13685 Completed fixes for LoadTable() and Unload() and verified their 13686 operation. Implemented full support for the "DdbHandle" object 13687 throughout the ACPI CA subsystem. 13688 13689 Implemented full support for the MADT and ECDT tables in the ACPI 13690 CA header files. Even though these tables are not directly 13691 consumed by ACPI CA, the header definitions are useful for ACPI 13692 device drivers. 13693 13694 Integrated resource descriptor fixes posted to the Linux ACPI 13695 list. This included checks for minimum descriptor length, and 13696 support for trailing NULL strings within descriptors that have 13697 optional string elements. 13698 13699 Code and Data Size: Current and previous core subsystem library 13700 sizes are shown below. These are the code and data sizes for the 13701 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 13702 these values do not include any ACPI driver or OSPM code. The 13703 debug version of the code includes the debug output trace 13704 mechanism and has a much larger code and data size. Note that 13705 these values will vary depending on the efficiency of the compiler 13706 and the compiler options used during generation. 13707 13708 Previous Release (20030918): 13709 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 13710 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 13711 Current Release: 13712 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 13713 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 13714 13715 13716 2) iASL Compiler: 13717 13718 Implemented detection of non-ASCII characters within the input 13719 source ASL file. This catches attempts to compile binary (AML) 13720 files early in the compile, with an informative error message. 13721 13722 Fixed a problem where the disassembler would fault if the output 13723 filename could not be generated or if the output file could not be 13724 opened. 13725 13726 ---------------------------------------- 13727 18 September 2003. Summary of changes for version 20030918: 13728 13729 13730 1) ACPI CA Core Subsystem: 13731 13732 Found and fixed a longstanding problem with the late execution of 13733 the various deferred AML opcodes (such as Operation Regions, 13734 Buffer Fields, Buffers, and Packages). If the name string 13735 specified for the name of the new object placed the object in a 13736 scope other than the current scope, the initialization/execution 13737 of the opcode failed. The solution to this problem was to 13738 implement a mechanism where the late execution of such opcodes 13739 does not attempt to lookup/create the name a second time in an 13740 incorrect scope. This fixes the "region size computed 13741 incorrectly" problem. 13742 13743 Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a 13744 Global Lock AE_BAD_PARAMETER error. 13745 13746 Fixed several 64-bit issues with prototypes, casting and data 13747 types. 13748 13749 Removed duplicate prototype from acdisasm.h 13750 13751 Fixed an issue involving EC Operation Region Detach (Shaohua Li) 13752 13753 Code and Data Size: Current and previous core subsystem library 13754 sizes are shown below. These are the code and data sizes for the 13755 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 13756 these values do not include any ACPI driver or OSPM code. The 13757 debug version of the code includes the debug output trace 13758 mechanism and has a much larger code and data size. Note that 13759 these values will vary depending on the efficiency of the compiler 13760 and the compiler options used during generation. 13761 13762 Previous Release: 13763 13764 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 13765 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 13766 Current Release: 13767 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 13768 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 13769 13770 13771 2) Linux: 13772 13773 Fixed the AcpiOsSleep implementation in osunixxf.c to pass the 13774 correct sleep time in seconds. 13775 13776 ---------------------------------------- 13777 14 July 2003. Summary of changes for version 20030619: 13778 13779 1) ACPI CA Core Subsystem: 13780 13781 Parse SSDTs in order discovered, as opposed to reverse order 13782 (Hrvoje Habjanic) 13783 13784 Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas 13785 Klausner, 13786 Nate Lawson) 13787 13788 13789 2) Linux: 13790 13791 Dynamically allocate SDT list (suggested by Andi Kleen) 13792 13793 proc function return value cleanups (Andi Kleen) 13794 13795 Correctly handle NMI watchdog during long stalls (Andrew Morton) 13796 13797 Make it so acpismp=force works (reported by Andrew Morton) 13798 13799 13800 ---------------------------------------- 13801 19 June 2003. Summary of changes for version 20030619: 13802 13803 1) ACPI CA Core Subsystem: 13804 13805 Fix To/FromBCD, eliminating the need for an arch-specific #define. 13806 13807 Do not acquire a semaphore in the S5 shutdown path. 13808 13809 Fix ex_digits_needed for 0. (Takayoshi Kochi) 13810 13811 Fix sleep/stall code reversal. (Andi Kleen) 13812 13813 Revert a change having to do with control method calling 13814 semantics. 13815 13816 2) Linux: 13817 13818 acpiphp update (Takayoshi Kochi) 13819 13820 Export acpi_disabled for sonypi (Stelian Pop) 13821 13822 Mention acpismp=force in config help 13823 13824 Re-add acpitable.c and acpismp=force. This improves backwards 13825 13826 compatibility and also cleans up the code to a significant degree. 13827 13828 Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge) 13829 13830 ---------------------------------------- 13831 22 May 2003. Summary of changes for version 20030522: 13832 13833 1) ACPI CA Core Subsystem: 13834 13835 Found and fixed a reported problem where an AE_NOT_FOUND error 13836 occurred occasionally during _BST evaluation. This turned out to 13837 be an Owner ID allocation issue where a called method did not get 13838 a new ID assigned to it. Eventually, (after 64k calls), the Owner 13839 ID UINT16 would wraparound so that the ID would be the same as the 13840 caller's and the called method would delete the caller's 13841 namespace. 13842 13843 Implemented extended error reporting for control methods that are 13844 aborted due to a run-time exception. Output includes the exact 13845 AML instruction that caused the method abort, a dump of the method 13846 locals and arguments at the time of the abort, and a trace of all 13847 nested control method calls. 13848 13849 Modified the interpreter to allow the creation of buffers of zero 13850 length from the AML code. Implemented new code to ensure that no 13851 attempt is made to actually allocate a memory buffer (of length 13852 zero) - instead, a simple buffer object with a NULL buffer pointer 13853 and length zero is created. A warning is no longer issued when 13854 the AML attempts to create a zero-length buffer. 13855 13856 Implemented a workaround for the "leading asterisk issue" in 13857 _HIDs, _UIDs, and _CIDs in the AML interpreter. One leading 13858 asterisk is automatically removed if present in any HID, UID, or 13859 CID strings. The iASL compiler will still flag this asterisk as 13860 an error, however. 13861 13862 Implemented full support for _CID methods that return a package of 13863 multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface 13864 now additionally returns a device _CID list if present. This 13865 required a change to the external interface in order to pass an 13866 ACPI_BUFFER object as a parameter since the _CID list is of 13867 variable length. 13868 13869 Fixed a problem with the new AE_SAME_HANDLER exception where 13870 handler initialization code did not know about this exception. 13871 13872 Code and Data Size: Current and previous core subsystem library 13873 sizes are shown below. These are the code and data sizes for the 13874 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 13875 these values do not include any ACPI driver or OSPM code. The 13876 debug version of the code includes the debug output trace 13877 mechanism and has a much larger code and data size. Note that 13878 these values will vary depending on the efficiency of the compiler 13879 and the compiler options used during generation. 13880 13881 Previous Release (20030509): 13882 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 13883 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 13884 Current Release: 13885 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 13886 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 13887 13888 13889 2) Linux: 13890 13891 Fixed a bug in which we would reinitialize the ACPI interrupt 13892 after it was already working, thus disabling all ACPI and the IRQs 13893 for any other device sharing the interrupt. (Thanks to Stian 13894 Jordet) 13895 13896 Toshiba driver update (John Belmonte) 13897 13898 Return only 0 or 1 for our interrupt handler status (Andrew 13899 Morton) 13900 13901 13902 3) iASL Compiler: 13903 13904 Fixed a reported problem where multiple (nested) ElseIf() 13905 statements were not handled correctly by the compiler, resulting 13906 in incorrect warnings and incorrect AML code. This was a problem 13907 in both the ASL parser and the code generator. 13908 13909 13910 4) Documentation: 13911 13912 Added changes to existing interfaces, new exception codes, and new 13913 text concerning reference count object management versus garbage 13914 collection. 13915 13916 ---------------------------------------- 13917 09 May 2003. Summary of changes for version 20030509. 13918 13919 13920 1) ACPI CA Core Subsystem: 13921 13922 Changed the subsystem initialization sequence to hold off 13923 installation of address space handlers until the hardware has been 13924 initialized and the system has entered ACPI mode. This is because 13925 the installation of space handlers can cause _REG methods to be 13926 run. Previously, the _REG methods could potentially be run before 13927 ACPI mode was enabled. 13928 13929 Fixed some memory leak issues related to address space handler and 13930 notify handler installation. There were some problems with the 13931 reference count mechanism caused by the fact that the handler 13932 objects are shared across several namespace objects. 13933 13934 Fixed a reported problem where reference counts within the 13935 namespace were not properly updated when named objects created by 13936 method execution were deleted. 13937 13938 Fixed a reported problem where multiple SSDTs caused a deletion 13939 issue during subsystem termination. Restructured the table data 13940 structures to simplify the linked lists and the related code. 13941 13942 Fixed a problem where the table ID associated with secondary 13943 tables (SSDTs) was not being propagated into the namespace objects 13944 created by those tables. This would only present a problem for 13945 tables that are unloaded at run-time, however. 13946 13947 Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE 13948 type as the length parameter (instead of UINT32). 13949 13950 Solved a long-standing problem where an ALREADY_EXISTS error 13951 appears on various systems. This problem could happen when there 13952 are multiple PCI_Config operation regions under a single PCI root 13953 bus. This doesn't happen very frequently, but there are some 13954 systems that do this in the ASL. 13955 13956 Fixed a reported problem where the internal DeleteNode function 13957 was incorrectly handling the case where a namespace node was the 13958 first in the parent's child list, and had additional peers (not 13959 the only child, but first in the list of children.) 13960 13961 Code and Data Size: Current core subsystem library sizes are shown 13962 below. These are the code and data sizes for the acpica.lib 13963 produced by the Microsoft Visual C++ 6.0 compiler, and these 13964 values do not include any ACPI driver or OSPM code. The debug 13965 version of the code includes the debug output trace mechanism and 13966 has a much larger code and data size. Note that these values will 13967 vary depending on the efficiency of the compiler and the compiler 13968 options used during generation. 13969 13970 Previous Release 13971 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 13972 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 13973 Current Release: 13974 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 13975 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 13976 13977 13978 2) Linux: 13979 13980 Allow ":" in OS override string (Ducrot Bruno) 13981 13982 Kobject fix (Greg KH) 13983 13984 13985 3 iASL Compiler/Disassembler: 13986 13987 Fixed a problem in the generation of the C source code files (AML 13988 is emitted in C source statements for BIOS inclusion) where the 13989 Ascii dump that appears within a C comment at the end of each line 13990 could cause a compile time error if the AML sequence happens to 13991 have an open comment or close comment sequence embedded. 13992 13993 13994 ---------------------------------------- 13995 24 April 2003. Summary of changes for version 20030424. 13996 13997 13998 1) ACPI CA Core Subsystem: 13999 14000 Support for big-endian systems has been implemented. Most of the 14001 support has been invisibly added behind big-endian versions of the 14002 ACPI_MOVE_* macros. 14003 14004 Fixed a problem in AcpiHwDisableGpeBlock() and 14005 AcpiHwClearGpeBlock() where an incorrect offset was passed to the 14006 low level hardware write routine. The offset parameter was 14007 actually eliminated from the low level read/write routines because 14008 they had become obsolete. 14009 14010 Fixed a problem where a handler object was deleted twice during 14011 the removal of a fixed event handler. 14012 14013 14014 2) Linux: 14015 14016 A fix for SMP systems with link devices was contributed by 14017 14018 Compaq's Dan Zink. 14019 14020 (2.5) Return whether we handled the interrupt in our IRQ handler. 14021 (Linux ISRs no longer return void, so we can propagate the handler 14022 return value from the ACPI CA core back to the OS.) 14023 14024 14025 14026 3) Documentation: 14027 14028 The ACPI CA Programmer Reference has been updated to reflect new 14029 interfaces and changes to existing interfaces. 14030 14031 ---------------------------------------- 14032 28 March 2003. Summary of changes for version 20030328. 14033 14034 1) ACPI CA Core Subsystem: 14035 14036 The GPE Block Device support has been completed. New interfaces 14037 are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event 14038 interfaces (enable, disable, clear, getstatus) have been split 14039 into separate interfaces for Fixed Events and General Purpose 14040 Events (GPEs) in order to support GPE Block Devices properly. 14041 14042 Fixed a problem where the error message "Failed to acquire 14043 semaphore" would appear during operations on the embedded 14044 controller (EC). 14045 14046 Code and Data Size: Current core subsystem library sizes are shown 14047 below. These are the code and data sizes for the acpica.lib 14048 produced by the Microsoft Visual C++ 6.0 compiler, and these 14049 values do not include any ACPI driver or OSPM code. The debug 14050 version of the code includes the debug output trace mechanism and 14051 has a much larger code and data size. Note that these values will 14052 vary depending on the efficiency of the compiler and the compiler 14053 options used during generation. 14054 14055 Previous Release 14056 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 14057 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 14058 Current Release: 14059 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 14060 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 14061 14062 14063 ---------------------------------------- 14064 28 February 2003. Summary of changes for version 20030228. 14065 14066 14067 1) ACPI CA Core Subsystem: 14068 14069 The GPE handling and dispatch code has been completely overhauled 14070 in preparation for support of GPE Block Devices (ID ACPI0006). 14071 This affects internal data structures and code only; there should 14072 be no differences visible externally. One new file has been 14073 added, evgpeblk.c 14074 14075 The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only 14076 fields that are used to determine the GPE block lengths. The 14077 REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address 14078 structures are ignored. This is per the ACPI specification but it 14079 isn't very clear. The full 256 Block 0/1 GPEs are now supported 14080 (the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128). 14081 14082 In the SCI interrupt handler, removed the read of the PM1_CONTROL 14083 register to look at the SCI_EN bit. On some machines, this read 14084 causes an SMI event and greatly slows down SCI events. (This may 14085 in fact be the cause of slow battery status response on some 14086 systems.) 14087 14088 Fixed a problem where a store of a NULL string to a package object 14089 could cause the premature deletion of the object. This was seen 14090 during execution of the battery _BIF method on some systems, 14091 resulting in no battery data being returned. 14092 14093 Added AcpiWalkResources interface to simplify parsing of resource 14094 lists. 14095 14096 Code and Data Size: Current core subsystem library sizes are shown 14097 below. These are the code and data sizes for the acpica.lib 14098 produced by the Microsoft Visual C++ 6.0 compiler, and these 14099 values do not include any ACPI driver or OSPM code. The debug 14100 version of the code includes the debug output trace mechanism and 14101 has a much larger code and data size. Note that these values will 14102 vary depending on the efficiency of the compiler and the compiler 14103 options used during generation. 14104 14105 Previous Release 14106 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 14107 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 14108 Current Release: 14109 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 14110 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 14111 14112 14113 2) Linux 14114 14115 S3 fixes (Ole Rohne) 14116 14117 Update ACPI PHP driver with to use new acpi_walk_resource API 14118 (Bjorn Helgaas) 14119 14120 Add S4BIOS support (Pavel Machek) 14121 14122 Map in entire table before performing checksum (John Stultz) 14123 14124 Expand the mem= cmdline to allow the specification of reserved and 14125 ACPI DATA blocks (Pavel Machek) 14126 14127 Never use ACPI on VISWS 14128 14129 Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez) 14130 14131 Revert a change that allowed P_BLK lengths to be 4 or 5. This is 14132 causing us to think that some systems support C2 when they really 14133 don't. 14134 14135 Do not count processor objects for non-present CPUs (Thanks to 14136 Dominik Brodowski) 14137 14138 14139 3) iASL Compiler: 14140 14141 Fixed a problem where ASL include files could not be found and 14142 opened. 14143 14144 Added support for the _PDC reserved name. 14145 14146 14147 ---------------------------------------- 14148 22 January 2003. Summary of changes for version 20030122. 14149 14150 14151 1) ACPI CA Core Subsystem: 14152 14153 Added a check for constructs of the form: Store (Local0, Local0) 14154 where Local0 is not initialized. Apparently, some BIOS 14155 programmers believe that this is a NOOP. Since this store doesn't 14156 do anything anyway, the new prototype behavior will ignore this 14157 error. This is a case where we can relax the strict checking in 14158 the interpreter in the name of compatibility. 14159 14160 14161 2) Linux 14162 14163 The AcpiSrc Source Conversion Utility has been released with the 14164 Linux package for the first time. This is the utility that is 14165 used to convert the ACPI CA base source code to the Linux version. 14166 14167 (Both) Handle P_BLK lengths shorter than 6 more gracefully 14168 14169 (Both) Move more headers to include/acpi, and delete an unused 14170 header. 14171 14172 (Both) Move drivers/acpi/include directory to include/acpi 14173 14174 (Both) Boot functions don't use cmdline, so don't pass it around 14175 14176 (Both) Remove include of unused header (Adrian Bunk) 14177 14178 (Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since 14179 the 14180 former now also includes the latter, acpiphp.h only needs the one, 14181 now. 14182 14183 (2.5) Make it possible to select method of bios restoring after S3 14184 resume. [=> no more ugly ifdefs] (Pavel Machek) 14185 14186 (2.5) Make proc write interfaces work (Pavel Machek) 14187 14188 (2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski) 14189 14190 (2.5) Break out ACPI Perf code into its own module, under cpufreq 14191 (Dominik Brodowski) 14192 14193 (2.4) S4BIOS support (Ducrot Bruno) 14194 14195 (2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio 14196 Visinoni) 14197 14198 14199 3) iASL Compiler: 14200 14201 Added support to disassemble SSDT and PSDTs. 14202 14203 Implemented support to obtain SSDTs from the Windows registry if 14204 available. 14205 14206 14207 ---------------------------------------- 14208 09 January 2003. Summary of changes for version 20030109. 14209 14210 1) ACPI CA Core Subsystem: 14211 14212 Changed the behavior of the internal Buffer-to-String conversion 14213 function. The current ACPI specification states that the contents 14214 of the buffer are "converted to a string of two-character 14215 hexadecimal numbers, each separated by a space". Unfortunately, 14216 this definition is not backwards compatible with existing ACPI 1.0 14217 implementations (although the behavior was not defined in the ACPI 14218 1.0 specification). The new behavior simply copies data from the 14219 buffer to the string until a null character is found or the end of 14220 the buffer is reached. The new String object is always null 14221 terminated. This problem was seen during the generation of _BIF 14222 battery data where incorrect strings were returned for battery 14223 type, etc. This will also require an errata to the ACPI 14224 specification. 14225 14226 Renamed all instances of NATIVE_UINT and NATIVE_INT to 14227 ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively. 14228 14229 Copyright in all module headers (both Linux and non-Linux) has be 14230 updated to 2003. 14231 14232 Code and Data Size: Current core subsystem library sizes are shown 14233 below. These are the code and data sizes for the acpica.lib 14234 produced by the Microsoft Visual C++ 6.0 compiler, and these 14235 values do not include any ACPI driver or OSPM code. The debug 14236 version of the code includes the debug output trace mechanism and 14237 has a much larger code and data size. Note that these values will 14238 vary depending on the efficiency of the compiler and the compiler 14239 options used during generation. 14240 14241 Previous Release 14242 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 14243 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 14244 Current Release: 14245 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 14246 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 14247 14248 14249 2) Linux 14250 14251 Fixed an oops on module insertion/removal (Matthew Tippett) 14252 14253 (2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante) 14254 14255 (2.5) Replace pr_debug (Randy Dunlap) 14256 14257 (2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski) 14258 14259 (Both) Eliminate spawning of thread from timer callback, in favor 14260 of schedule_work() 14261 14262 (Both) Show Lid status in /proc (Zdenek OGAR Skalak) 14263 14264 (Both) Added define for Fixed Function HW region (Matthew Wilcox) 14265 14266 (Both) Add missing statics to button.c (Pavel Machek) 14267 14268 Several changes have been made to the source code translation 14269 utility that generates the Linux Code in order to make the code 14270 more "Linux-like": 14271 14272 All typedefs on structs and unions have been removed in keeping 14273 with the Linux coding style. 14274 14275 Removed the non-Linux SourceSafe module revision number from each 14276 module header. 14277 14278 Completed major overhaul of symbols to be lowercased for linux. 14279 Doubled the number of symbols that are lowercased. 14280 14281 Fixed a problem where identifiers within procedure headers and 14282 within quotes were not fully lower cased (they were left with a 14283 starting capital.) 14284 14285 Some C macros whose only purpose is to allow the generation of 16- 14286 bit code are now completely removed in the Linux code, increasing 14287 readability and maintainability. 14288 14289 ---------------------------------------- 14290 14291 12 December 2002. Summary of changes for version 20021212. 14292 14293 14294 1) ACPI CA Core Subsystem: 14295 14296 Fixed a problem where the creation of a zero-length AML Buffer 14297 would cause a fault. 14298 14299 Fixed a problem where a Buffer object that pointed to a static AML 14300 buffer (in an ACPI table) could inadvertently be deleted, causing 14301 memory corruption. 14302 14303 Fixed a problem where a user buffer (passed in to the external 14304 ACPI CA interfaces) could be overwritten if the buffer was too 14305 small to complete the operation, causing memory corruption. 14306 14307 Fixed a problem in the Buffer-to-String conversion code where a 14308 string of length one was always returned, regardless of the size 14309 of the input Buffer object. 14310 14311 Removed the NATIVE_CHAR data type across the entire source due to 14312 lack of need and lack of consistent use. 14313 14314 Code and Data Size: Current core subsystem library sizes are shown 14315 below. These are the code and data sizes for the acpica.lib 14316 produced by the Microsoft Visual C++ 6.0 compiler, and these 14317 values do not include any ACPI driver or OSPM code. The debug 14318 version of the code includes the debug output trace mechanism and 14319 has a much larger code and data size. Note that these values will 14320 vary depending on the efficiency of the compiler and the compiler 14321 options used during generation. 14322 14323 Previous Release 14324 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 14325 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 14326 Current Release: 14327 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 14328 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 14329 14330 14331 ---------------------------------------- 14332 05 December 2002. Summary of changes for version 20021205. 14333 14334 1) ACPI CA Core Subsystem: 14335 14336 Fixed a problem where a store to a String or Buffer object could 14337 cause corruption of the DSDT if the object type being stored was 14338 the same as the target object type and the length of the object 14339 being stored was equal to or smaller than the original (existing) 14340 target object. This was seen to cause corruption of battery _BIF 14341 buffers if the _BIF method modified the buffer on the fly. 14342 14343 Fixed a problem where an internal error was generated if a control 14344 method invocation was used in an OperationRegion, Buffer, or 14345 Package declaration. This was caused by the deferred parsing of 14346 the control method and thus the deferred creation of the internal 14347 method object. The solution to this problem was to create the 14348 internal method object at the moment the method is encountered in 14349 the first pass - so that subsequent references to the method will 14350 able to obtain the required parameter count and thus properly 14351 parse the method invocation. This problem presented itself as an 14352 AE_AML_INTERNAL during the pass 1 parse phase during table load. 14353 14354 Fixed a problem where the internal String object copy routine did 14355 not always allocate sufficient memory for the target String object 14356 and caused memory corruption. This problem was seen to cause 14357 "Allocation already present in list!" errors as memory allocation 14358 became corrupted. 14359 14360 Implemented a new function for the evaluation of namespace objects 14361 that allows the specification of the allowable return object 14362 types. This simplifies a lot of code that checks for a return 14363 object of one or more specific objects returned from the 14364 evaluation (such as _STA, etc.) This may become and external 14365 function if it would be useful to ACPI-related drivers. 14366 14367 Completed another round of prefixing #defines with "ACPI_" for 14368 clarity. 14369 14370 Completed additional code restructuring to allow more modular 14371 linking for iASL compiler and AcpiExec. Several files were split 14372 creating new files. New files: nsparse.c dsinit.c evgpe.c 14373 14374 Implemented an abort mechanism to terminate an executing control 14375 method via the AML debugger. This feature is useful for debugging 14376 control methods that depend (wait) for specific hardware 14377 responses. 14378 14379 Code and Data Size: Current core subsystem library sizes are shown 14380 below. These are the code and data sizes for the acpica.lib 14381 produced by the Microsoft Visual C++ 6.0 compiler, and these 14382 values do not include any ACPI driver or OSPM code. The debug 14383 version of the code includes the debug output trace mechanism and 14384 has a much larger code and data size. Note that these values will 14385 vary depending on the efficiency of the compiler and the compiler 14386 options used during generation. 14387 14388 Previous Release 14389 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 14390 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 14391 Current Release: 14392 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 14393 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 14394 14395 14396 2) iASL Compiler/Disassembler 14397 14398 Fixed a compiler code generation problem for "Interrupt" Resource 14399 Descriptors. If specified in the ASL, the optional "Resource 14400 Source Index" and "Resource Source" fields were not inserted into 14401 the correct location within the AML resource descriptor, creating 14402 an invalid descriptor. 14403 14404 Fixed a disassembler problem for "Interrupt" resource descriptors. 14405 The optional "Resource Source Index" and "Resource Source" fields 14406 were ignored. 14407 14408 14409 ---------------------------------------- 14410 22 November 2002. Summary of changes for version 20021122. 14411 14412 14413 1) ACPI CA Core Subsystem: 14414 14415 Fixed a reported problem where an object stored to a Method Local 14416 or Arg was not copied to a new object during the store - the 14417 object pointer was simply copied to the Local/Arg. This caused 14418 all subsequent operations on the Local/Arg to also affect the 14419 original source of the store operation. 14420 14421 Fixed a problem where a store operation to a Method Local or Arg 14422 was not completed properly if the Local/Arg contained a reference 14423 (from RefOf) to a named field. The general-purpose store-to- 14424 namespace-node code is now used so that this case is handled 14425 automatically. 14426 14427 Fixed a problem where the internal object copy routine would cause 14428 a protection fault if the object being copied was a Package and 14429 contained either 1) a NULL package element or 2) a nested sub- 14430 package. 14431 14432 Fixed a problem with the GPE initialization that resulted from an 14433 ambiguity in the ACPI specification. One section of the 14434 specification states that both the address and length of the GPE 14435 block must be zero if the block is not supported. Another section 14436 implies that only the address need be zero if the block is not 14437 supported. The code has been changed so that both the address and 14438 the length must be non-zero to indicate a valid GPE block (i.e., 14439 if either the address or the length is zero, the GPE block is 14440 invalid.) 14441 14442 Code and Data Size: Current core subsystem library sizes are shown 14443 below. These are the code and data sizes for the acpica.lib 14444 produced by the Microsoft Visual C++ 6.0 compiler, and these 14445 values do not include any ACPI driver or OSPM code. The debug 14446 version of the code includes the debug output trace mechanism and 14447 has a much larger code and data size. Note that these values will 14448 vary depending on the efficiency of the compiler and the compiler 14449 options used during generation. 14450 14451 Previous Release 14452 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 14453 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 14454 Current Release: 14455 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 14456 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 14457 14458 14459 2) Linux 14460 14461 Cleaned up EC driver. Exported an external EC read/write 14462 interface. By going through this, other drivers (most notably 14463 sonypi) will be able to serialize access to the EC. 14464 14465 14466 3) iASL Compiler/Disassembler 14467 14468 Implemented support to optionally generate include files for both 14469 ASM and C (the -i switch). This simplifies BIOS development by 14470 automatically creating include files that contain external 14471 declarations for the symbols that are created within the 14472 14473 (optionally generated) ASM and C AML source files. 14474 14475 14476 ---------------------------------------- 14477 15 November 2002. Summary of changes for version 20021115. 14478 14479 1) ACPI CA Core Subsystem: 14480 14481 Fixed a memory leak problem where an error during resolution of 14482 14483 method arguments during a method invocation from another method 14484 failed to cleanup properly by deleting all successfully resolved 14485 argument objects. 14486 14487 Fixed a problem where the target of the Index() operator was not 14488 correctly constructed if the source object was a package. This 14489 problem has not been detected because the use of a target operand 14490 with Index() is very rare. 14491 14492 Fixed a problem with the Index() operator where an attempt was 14493 made to delete the operand objects twice. 14494 14495 Fixed a problem where an attempt was made to delete an operand 14496 twice during execution of the CondRefOf() operator if the target 14497 did not exist. 14498 14499 Implemented the first of perhaps several internal create object 14500 functions that create and initialize a specific object type. This 14501 consolidates duplicated code wherever the object is created, thus 14502 shrinking the size of the subsystem. 14503 14504 Implemented improved debug/error messages for errors that occur 14505 during nested method invocations. All executing method pathnames 14506 are displayed (with the error) as the call stack is unwound - thus 14507 simplifying debug. 14508 14509 Fixed a problem introduced in the 10/02 release that caused 14510 premature deletion of a buffer object if a buffer was used as an 14511 ASL operand where an integer operand is required (Thus causing an 14512 implicit object conversion from Buffer to Integer.) The change in 14513 the 10/02 release was attempting to fix a memory leak (albeit 14514 incorrectly.) 14515 14516 Code and Data Size: Current core subsystem library sizes are shown 14517 below. These are the code and data sizes for the acpica.lib 14518 produced by the Microsoft Visual C++ 6.0 compiler, and these 14519 values do not include any ACPI driver or OSPM code. The debug 14520 version of the code includes the debug output trace mechanism and 14521 has a much larger code and data size. Note that these values will 14522 vary depending on the efficiency of the compiler and the compiler 14523 options used during generation. 14524 14525 Previous Release 14526 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 14527 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 14528 Current Release: 14529 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 14530 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 14531 14532 14533 2) Linux 14534 14535 Changed the implementation of the ACPI semaphores to use down() 14536 instead of down_interruptable(). It is important that the 14537 execution of ACPI control methods not be interrupted by signals. 14538 Methods must run to completion, or the system may be left in an 14539 unknown/unstable state. 14540 14541 Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set. 14542 (Shawn Starr) 14543 14544 14545 3) iASL Compiler/Disassembler 14546 14547 14548 Changed the default location of output files. All output files 14549 are now placed in the current directory by default instead of in 14550 the directory of the source file. This change may affect some 14551 existing makefiles, but it brings the behavior of the compiler in 14552 line with other similar tools. The location of the output files 14553 can be overridden with the -p command line switch. 14554 14555 14556 ---------------------------------------- 14557 11 November 2002. Summary of changes for version 20021111. 14558 14559 14560 0) ACPI Specification 2.0B is released and is now available at: 14561 http://www.acpi.info/index.html 14562 14563 14564 1) ACPI CA Core Subsystem: 14565 14566 Implemented support for the ACPI 2.0 SMBus Operation Regions. 14567 This includes the early detection and handoff of the request to 14568 the SMBus region handler (avoiding all of the complex field 14569 support code), and support for the bidirectional return packet 14570 from an SMBus write operation. This paves the way for the 14571 development of SMBus drivers in each host operating system. 14572 14573 Fixed a problem where the semaphore WAIT_FOREVER constant was 14574 defined as 32 bits, but must be 16 bits according to the ACPI 14575 specification. This had the side effect of causing ASL 14576 Mutex/Event timeouts even though the ASL code requested a wait 14577 forever. Changed all internal references to the ACPI timeout 14578 parameter to 16 bits to prevent future problems. Changed the name 14579 of WAIT_FOREVER to ACPI_WAIT_FOREVER. 14580 14581 Code and Data Size: Current core subsystem library sizes are shown 14582 below. These are the code and data sizes for the acpica.lib 14583 produced by the Microsoft Visual C++ 6.0 compiler, and these 14584 values do not include any ACPI driver or OSPM code. The debug 14585 version of the code includes the debug output trace mechanism and 14586 has a much larger code and data size. Note that these values will 14587 vary depending on the efficiency of the compiler and the compiler 14588 options used during generation. 14589 14590 Previous Release 14591 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 14592 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 14593 Current Release: 14594 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 14595 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 14596 14597 14598 2) Linux 14599 14600 Module loading/unloading fixes (John Cagle) 14601 14602 14603 3) iASL Compiler/Disassembler 14604 14605 Added support for the SMBBlockProcessCall keyword (ACPI 2.0) 14606 14607 Implemented support for the disassembly of all SMBus protocol 14608 keywords (SMBQuick, SMBWord, etc.) 14609 14610 ---------------------------------------- 14611 01 November 2002. Summary of changes for version 20021101. 14612 14613 14614 1) ACPI CA Core Subsystem: 14615 14616 Fixed a problem where platforms that have a GPE1 block but no GPE0 14617 block were not handled correctly. This resulted in a "GPE 14618 overlap" error message. GPE0 is no longer required. 14619 14620 Removed code added in the previous release that inserted nodes 14621 into the namespace in alphabetical order. This caused some side- 14622 effects on various machines. The root cause of the problem is 14623 still under investigation since in theory, the internal ordering 14624 of the namespace nodes should not matter. 14625 14626 14627 Enhanced error reporting for the case where a named object is not 14628 found during control method execution. The full ACPI namepath 14629 (name reference) of the object that was not found is displayed in 14630 this case. 14631 14632 Note: as a result of the overhaul of the namespace object types in 14633 the previous release, the namespace nodes for the predefined 14634 scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE 14635 instead of ACPI_TYPE_ANY. This simplifies the namespace 14636 management code but may affect code that walks the namespace tree 14637 looking for specific object types. 14638 14639 Code and Data Size: Current core subsystem library sizes are shown 14640 below. These are the code and data sizes for the acpica.lib 14641 produced by the Microsoft Visual C++ 6.0 compiler, and these 14642 values do not include any ACPI driver or OSPM code. The debug 14643 version of the code includes the debug output trace mechanism and 14644 has a much larger code and data size. Note that these values will 14645 vary depending on the efficiency of the compiler and the compiler 14646 options used during generation. 14647 14648 Previous Release 14649 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 14650 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 14651 Current Release: 14652 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 14653 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 14654 14655 14656 2) Linux 14657 14658 Fixed a problem introduced in the previous release where the 14659 Processor and Thermal objects were not recognized and installed in 14660 /proc. This was related to the scope type change described above. 14661 14662 14663 3) iASL Compiler/Disassembler 14664 14665 Implemented the -g option to get all of the required ACPI tables 14666 from the registry and save them to files (Windows version of the 14667 compiler only.) The required tables are the FADT, FACS, and DSDT. 14668 14669 Added ACPI table checksum validation during table disassembly in 14670 order to catch corrupted tables. 14671 14672 14673 ---------------------------------------- 14674 22 October 2002. Summary of changes for version 20021022. 14675 14676 1) ACPI CA Core Subsystem: 14677 14678 Implemented a restriction on the Scope operator that the target 14679 must already exist in the namespace at the time the operator is 14680 encountered (during table load or method execution). In other 14681 words, forward references are not allowed and Scope() cannot 14682 create a new object. This changes the previous behavior where the 14683 interpreter would create the name if not found. This new behavior 14684 correctly enables the search-to-root algorithm during namespace 14685 lookup of the target name. Because of this upsearch, this fixes 14686 the known Compaq _SB_.OKEC problem and makes both the AML 14687 interpreter and iASL compiler compatible with other ACPI 14688 implementations. 14689 14690 Completed a major overhaul of the internal ACPI object types for 14691 the ACPI Namespace and the associated operand objects. Many of 14692 these types had become obsolete with the introduction of the two- 14693 pass namespace load. This cleanup simplifies the code and makes 14694 the entire namespace load mechanism much clearer and easier to 14695 understand. 14696 14697 Improved debug output for tracking scope opening/closing to help 14698 diagnose scoping issues. The old scope name as well as the new 14699 scope name are displayed. Also improved error messages for 14700 problems with ASL Mutex objects and error messages for GPE 14701 problems. 14702 14703 Cleaned up the namespace dump code, removed obsolete code. 14704 14705 All string output (for all namespace/object dumps) now uses the 14706 common ACPI string output procedure which handles escapes properly 14707 and does not emit non-printable characters. 14708 14709 Fixed some issues with constants in the 64-bit version of the 14710 local C library (utclib.c) 14711 14712 14713 2) Linux 14714 14715 EC Driver: No longer attempts to acquire the Global Lock at 14716 interrupt level. 14717 14718 14719 3) iASL Compiler/Disassembler 14720 14721 Implemented ACPI 2.0B grammar change that disallows all Type 1 and 14722 2 opcodes outside of a control method. This means that the 14723 "executable" operators (versus the "namespace" operators) cannot 14724 be used at the table level; they can only be used within a control 14725 method. 14726 14727 Implemented the restriction on the Scope() operator where the 14728 target must already exist in the namespace at the time the 14729 operator is encountered (during ASL compilation). In other words, 14730 forward references are not allowed and Scope() cannot create a new 14731 object. This makes the iASL compiler compatible with other ACPI 14732 implementations and makes the Scope() implementation adhere to the 14733 ACPI specification. 14734 14735 Fixed a problem where namepath optimization for the Alias operator 14736 was optimizing the wrong path (of the two namepaths.) This caused 14737 a "Missing alias link" error message. 14738 14739 Fixed a problem where an "unknown reserved name" warning could be 14740 incorrectly generated for names like "_SB" when the trailing 14741 underscore is not used in the original ASL. 14742 14743 Fixed a problem where the reserved name check did not handle 14744 NamePaths with multiple NameSegs correctly. The first nameseg of 14745 the NamePath was examined instead of the last NameSeg. 14746 14747 14748 ---------------------------------------- 14749 14750 02 October 2002. Summary of changes for this release. 14751 14752 14753 1) ACPI CA Core Subsystem version 20021002: 14754 14755 Fixed a problem where a store/copy of a string to an existing 14756 string did not always set the string length properly in the String 14757 object. 14758 14759 Fixed a reported problem with the ToString operator where the 14760 behavior was identical to the ToHexString operator instead of just 14761 simply converting a raw buffer to a string data type. 14762 14763 Fixed a problem where CopyObject and the other "explicit" 14764 conversion operators were not updating the internal namespace node 14765 type as part of the store operation. 14766 14767 Fixed a memory leak during implicit source operand conversion 14768 where the original object was not deleted if it was converted to a 14769 new object of a different type. 14770 14771 Enhanced error messages for all problems associated with namespace 14772 lookups. Common procedure generates and prints the lookup name as 14773 well as the formatted status. 14774 14775 Completed implementation of a new design for the Alias support 14776 within the namespace. The existing design did not handle the case 14777 where a new object was assigned to one of the two names due to the 14778 use of an explicit conversion operator, resulting in the two names 14779 pointing to two different objects. The new design simply points 14780 the Alias name to the original name node - not to the object. 14781 This results in a level of indirection that must be handled in the 14782 name resolution mechanism. 14783 14784 Code and Data Size: Current core subsystem library sizes are shown 14785 below. These are the code and data sizes for the acpica.lib 14786 produced by the Microsoft Visual C++ 6.0 compiler, and these 14787 values do not include any ACPI driver or OSPM code. The debug 14788 version of the code includes the debug output trace mechanism and 14789 has a larger code and data size. Note that these values will vary 14790 depending on the efficiency of the compiler and the compiler 14791 options used during generation. 14792 14793 Previous Release 14794 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 14795 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 14796 Current Release: 14797 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 14798 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 14799 14800 14801 2) Linux 14802 14803 Initialize thermal driver's timer before it is used. (Knut 14804 Neumann) 14805 14806 Allow handling negative celsius values. (Kochi Takayoshi) 14807 14808 Fix thermal management and make trip points. R/W (Pavel Machek) 14809 14810 Fix /proc/acpi/sleep. (P. Christeas) 14811 14812 IA64 fixes. (David Mosberger) 14813 14814 Fix reversed logic in blacklist code. (Sergio Monteiro Basto) 14815 14816 Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik 14817 Brodowski) 14818 14819 14820 3) iASL Compiler/Disassembler 14821 14822 Clarified some warning/error messages. 14823 14824 14825 ---------------------------------------- 14826 18 September 2002. Summary of changes for this release. 14827 14828 14829 1) ACPI CA Core Subsystem version 20020918: 14830 14831 Fixed a reported problem with reference chaining (via the Index() 14832 and RefOf() operators) in the ObjectType() and SizeOf() operators. 14833 The definition of these operators includes the dereferencing of 14834 all chained references to return information on the base object. 14835 14836 Fixed a problem with stores to indexed package elements - the 14837 existing code would not complete the store if an "implicit 14838 conversion" was not performed. In other words, if the existing 14839 object (package element) was to be replaced completely, the code 14840 didn't handle this case. 14841 14842 Relaxed typechecking on the ASL "Scope" operator to allow the 14843 target name to refer to an object of type Integer, String, or 14844 Buffer, in addition to the scoping object types (Device, 14845 predefined Scopes, Processor, PowerResource, and ThermalZone.) 14846 This allows existing AML code that has workarounds for a bug in 14847 Windows to function properly. A warning is issued, however. This 14848 affects both the AML interpreter and the iASL compiler. Below is 14849 an example of this type of ASL code: 14850 14851 Name(DEB,0x00) 14852 Scope(DEB) 14853 { 14854 14855 Fixed some reported problems with 64-bit integer support in the 14856 local implementation of C library functions (clib.c) 14857 14858 14859 2) Linux 14860 14861 Use ACPI fix map region instead of IOAPIC region, since it is 14862 undefined in non-SMP. 14863 14864 Ensure that the SCI has the proper polarity and trigger, even on 14865 systems that do not have an interrupt override entry in the MADT. 14866 14867 2.5 big driver reorganization (Pat Mochel) 14868 14869 Use early table mapping code from acpitable.c (Andi Kleen) 14870 14871 New blacklist entries (Andi Kleen) 14872 14873 Blacklist improvements. Split blacklist code out into a separate 14874 file. Move checking the blacklist to very early. Previously, we 14875 would use ACPI tables, and then halfway through init, check the 14876 blacklist -- too late. Now, it's early enough to completely fall- 14877 back to non-ACPI. 14878 14879 14880 3) iASL Compiler/Disassembler version 20020918: 14881 14882 Fixed a problem where the typechecking code didn't know that an 14883 alias could point to a method. In other words, aliases were not 14884 being dereferenced during typechecking. 14885 14886 14887 ---------------------------------------- 14888 29 August 2002. Summary of changes for this release. 14889 14890 1) ACPI CA Core Subsystem Version 20020829: 14891 14892 If the target of a Scope() operator already exists, it must be an 14893 object type that actually opens a scope -- such as a Device, 14894 Method, Scope, etc. This is a fatal runtime error. Similar error 14895 check has been added to the iASL compiler also. 14896 14897 Tightened up the namespace load to disallow multiple names in the 14898 same scope. This previously was allowed if both objects were of 14899 the same type. (i.e., a lookup was the same as entering a new 14900 name). 14901 14902 14903 2) Linux 14904 14905 Ensure that the ACPI interrupt has the proper trigger and 14906 polarity. 14907 14908 local_irq_disable is extraneous. (Matthew Wilcox) 14909 14910 Make "acpi=off" actually do what it says, and not use the ACPI 14911 interpreter *or* the tables. 14912 14913 Added arch-neutral support for parsing SLIT and SRAT tables (Kochi 14914 Takayoshi) 14915 14916 14917 3) iASL Compiler/Disassembler Version 20020829: 14918 14919 Implemented namepath optimization for name declarations. For 14920 example, a declaration like "Method (\_SB_.ABCD)" would get 14921 optimized to "Method (ABCD)" if the declaration is within the 14922 \_SB_ scope. This optimization is in addition to the named 14923 reference path optimization first released in the previous 14924 version. This would seem to complete all possible optimizations 14925 for namepaths within the ASL/AML. 14926 14927 If the target of a Scope() operator already exists, it must be an 14928 object type that actually opens a scope -- such as a Device, 14929 Method, Scope, etc. 14930 14931 Implemented a check and warning for unreachable code in the same 14932 block below a Return() statement. 14933 14934 Fixed a problem where the listing file was not generated if the 14935 compiler aborted if the maximum error count was exceeded (200). 14936 14937 Fixed a problem where the typechecking of method return values was 14938 broken. This includes the check for a return value when the 14939 method is invoked as a TermArg (a return value is expected.) 14940 14941 Fixed a reported problem where EOF conditions during a quoted 14942 string or comment caused a fault. 14943 14944 14945 ---------------------------------------- 14946 15 August 2002. Summary of changes for this release. 14947 14948 1) ACPI CA Core Subsystem Version 20020815: 14949 14950 Fixed a reported problem where a Store to a method argument that 14951 contains a reference did not perform the indirect store correctly. 14952 This problem was created during the conversion to the new 14953 reference object model - the indirect store to a method argument 14954 code was not updated to reflect the new model. 14955 14956 Reworked the ACPI mode change code to better conform to ACPI 2.0, 14957 handle corner cases, and improve code legibility (Kochi Takayoshi) 14958 14959 Fixed a problem with the pathname parsing for the carat (^) 14960 prefix. The heavy use of the carat operator by the new namepath 14961 optimization in the iASL compiler uncovered a problem with the AML 14962 interpreter handling of this prefix. In the case where one or 14963 more carats precede a single nameseg, the nameseg was treated as 14964 standalone and the search rule (to root) was inadvertently 14965 applied. This could cause both the iASL compiler and the 14966 interpreter to find the wrong object or to miss the error that 14967 should occur if the object does not exist at that exact pathname. 14968 14969 Found and fixed the problem where the HP Pavilion DSDT would not 14970 load. This was a relatively minor tweak to the table loading code 14971 (a problem caused by the unexpected encounter with a method 14972 invocation not within a control method), but it does not solve the 14973 overall issue of the execution of AML code at the table level. 14974 This investigation is still ongoing. 14975 14976 Code and Data Size: Current core subsystem library sizes are shown 14977 below. These are the code and data sizes for the acpica.lib 14978 produced by the Microsoft Visual C++ 6.0 compiler, and these 14979 values do not include any ACPI driver or OSPM code. The debug 14980 version of the code includes the debug output trace mechanism and 14981 has a larger code and data size. Note that these values will vary 14982 depending on the efficiency of the compiler and the compiler 14983 options used during generation. 14984 14985 Previous Release 14986 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 14987 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 14988 Current Release: 14989 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 14990 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 14991 14992 14993 2) Linux 14994 14995 Remove redundant slab.h include (Brad Hards) 14996 14997 Fix several bugs in thermal.c (Herbert Nachtnebel) 14998 14999 Make CONFIG_ACPI_BOOT work properly (Pavel Machek) 15000 15001 Change acpi_system_suspend to use updated irq functions (Pavel 15002 Machek) 15003 15004 Export acpi_get_firmware_table (Matthew Wilcox) 15005 15006 Use proper root proc entry for ACPI (Kochi Takayoshi) 15007 15008 Fix early-boot table parsing (Bjorn Helgaas) 15009 15010 15011 3) iASL Compiler/Disassembler 15012 15013 Reworked the compiler options to make them more consistent and to 15014 use two-letter options where appropriate. We were running out of 15015 sensible letters. This may break some makefiles, so check the 15016 current options list by invoking the compiler with no parameters. 15017 15018 Completed the design and implementation of the ASL namepath 15019 optimization option for the compiler. This option optimizes all 15020 references to named objects to the shortest possible path. The 15021 first attempt tries to utilize a single nameseg (4 characters) and 15022 the "search-to-root" algorithm used by the interpreter. If that 15023 cannot be used (because either the name is not in the search path 15024 or there is a conflict with another object with the same name), 15025 the pathname is optimized using the carat prefix (usually a 15026 shorter string than specifying the entire path from the root.) 15027 15028 Implemented support to obtain the DSDT from the Windows registry 15029 (when the disassembly option is specified with no input file). 15030 Added this code as the implementation for AcpiOsTableOverride in 15031 the Windows OSL. Migrated the 16-bit code (used in the AcpiDump 15032 utility) to scan memory for the DSDT to the AcpiOsTableOverride 15033 function in the DOS OSL to make the disassembler truly OS 15034 independent. 15035 15036 Implemented a new option to disassemble and compile in one step. 15037 When used without an input filename, this option will grab the 15038 DSDT from the local machine, disassemble it, and compile it in one 15039 step. 15040 15041 Added a warning message for invalid escapes (a backslash followed 15042 by any character other than the allowable escapes). This catches 15043 the quoted string error "\_SB_" (which should be "\\_SB_" ). 15044 15045 Also, there are numerous instances in the ACPI specification where 15046 this error occurs. 15047 15048 Added a compiler option to disable all optimizations. This is 15049 basically the "compatibility mode" because by using this option, 15050 the AML code will come out exactly the same as other ASL 15051 compilers. 15052 15053 Added error messages for incorrectly ordered dependent resource 15054 functions. This includes: missing EndDependentFn macro at end of 15055 dependent resource list, nested dependent function macros (both 15056 start and end), and missing StartDependentFn macro. These are 15057 common errors that should be caught at compile time. 15058 15059 Implemented _OSI support for the disassembler and compiler. _OSI 15060 must be included in the namespace for proper disassembly (because 15061 the disassembler must know the number of arguments.) 15062 15063 Added an "optimization" message type that is optional (off by 15064 default). This message is used for all optimizations - including 15065 constant folding, integer optimization, and namepath optimization. 15066 15067 ---------------------------------------- 15068 25 July 2002. Summary of changes for this release. 15069 15070 15071 1) ACPI CA Core Subsystem Version 20020725: 15072 15073 The AML Disassembler has been enhanced to produce compilable ASL 15074 code and has been integrated into the iASL compiler (see below) as 15075 well as the single-step disassembly for the AML debugger and the 15076 disassembler for the AcpiDump utility. All ACPI 2.0A opcodes, 15077 resource templates and macros are fully supported. The 15078 disassembler has been tested on over 30 different AML files, 15079 producing identical AML when the resulting disassembled ASL file 15080 is recompiled with the same ASL compiler. 15081 15082 Modified the Resource Manager to allow zero interrupts and zero 15083 dma channels during the GetCurrentResources call. This was 15084 causing problems on some platforms. 15085 15086 Added the AcpiOsRedirectOutput interface to the OSL to simplify 15087 output redirection for the AcpiOsPrintf and AcpiOsVprintf 15088 interfaces. 15089 15090 Code and Data Size: Current core subsystem library sizes are shown 15091 below. These are the code and data sizes for the acpica.lib 15092 produced by the Microsoft Visual C++ 6.0 compiler, and these 15093 values do not include any ACPI driver or OSPM code. The debug 15094 version of the code includes the debug output trace mechanism and 15095 has a larger code and data size. Note that these values will vary 15096 depending on the efficiency of the compiler and the compiler 15097 options used during generation. 15098 15099 Previous Release 15100 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 15101 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 15102 Current Release: 15103 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 15104 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 15105 15106 15107 2) Linux 15108 15109 Fixed a panic in the EC driver (Dominik Brodowski) 15110 15111 Implemented checksum of the R/XSDT itself during Linux table scan 15112 (Richard Schaal) 15113 15114 15115 3) iASL compiler 15116 15117 The AML disassembler is integrated into the compiler. The "-d" 15118 option invokes the disassembler to completely disassemble an 15119 input AML file, producing as output a text ASL file with the 15120 extension ".dsl" (to avoid name collisions with existing .asl 15121 source files.) A future enhancement will allow the disassembler 15122 to obtain the BIOS DSDT from the registry under Windows. 15123 15124 Fixed a problem with the VendorShort and VendorLong resource 15125 descriptors where an invalid AML sequence was created. 15126 15127 Implemented a fix for BufferData term in the ASL parser. It was 15128 inadvertently defined twice, allowing invalid syntax to pass and 15129 causing reduction conflicts. 15130 15131 Fixed a problem where the Ones opcode could get converted to a 15132 value of zero if "Ones" was used where a byte, word or dword value 15133 was expected. The 64-bit value is now truncated to the correct 15134 size with the correct value. 15135 15136 15137 15138 ---------------------------------------- 15139 02 July 2002. Summary of changes for this release. 15140 15141 15142 1) ACPI CA Core Subsystem Version 20020702: 15143 15144 The Table Manager code has been restructured to add several new 15145 features. Tables that are not required by the core subsystem 15146 (other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer 15147 validated in any way and are returned from AcpiGetFirmwareTable if 15148 requested. The AcpiOsTableOverride interface is now called for 15149 each table that is loaded by the subsystem in order to allow the 15150 host to override any table it chooses. Previously, only the DSDT 15151 could be overridden. Added one new files, tbrsdt.c and 15152 tbgetall.c. 15153 15154 Fixed a problem with the conversion of internal package objects to 15155 external objects (when a package is returned from a control 15156 method.) The return buffer length was set to zero instead of the 15157 proper length of the package object. 15158 15159 Fixed a reported problem with the use of the RefOf and DeRefOf 15160 operators when passing reference arguments to control methods. A 15161 new type of Reference object is used internally for references 15162 produced by the RefOf operator. 15163 15164 Added additional error messages in the Resource Manager to explain 15165 AE_BAD_DATA errors when they occur during resource parsing. 15166 15167 Split the AcpiEnableSubsystem into two primitives to enable a 15168 finer granularity initialization sequence. These two calls should 15169 be called in this order: AcpiEnableSubsystem (flags), 15170 AcpiInitializeObjects (flags). The flags parameter remains the 15171 same. 15172 15173 15174 2) Linux 15175 15176 Updated the ACPI utilities module to understand the new style of 15177 fully resolved package objects that are now returned from the core 15178 subsystem. This eliminates errors of the form: 15179 15180 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT] 15181 acpi_utils-0430 [145] acpi_evaluate_reference: 15182 Invalid element in package (not a device reference) 15183 15184 The method evaluation utility uses the new buffer allocation 15185 scheme instead of calling AcpiEvaluate Object twice. 15186 15187 Added support for ECDT. This allows the use of the Embedded 15188 15189 Controller before the namespace has been fully initialized, which 15190 is necessary for ACPI 2.0 support, and for some laptops to 15191 initialize properly. (Laptops using ECDT are still rare, so only 15192 limited testing was performed of the added functionality.) 15193 15194 Fixed memory leaks in the EC driver. 15195 15196 Eliminated a brittle code structure in acpi_bus_init(). 15197 15198 Eliminated the acpi_evaluate() helper function in utils.c. It is 15199 no longer needed since acpi_evaluate_object can optionally 15200 allocate memory for the return object. 15201 15202 Implemented fix for keyboard hang when getting battery readings on 15203 some systems (Stephen White) 15204 15205 PCI IRQ routing update (Dominik Brodowski) 15206 15207 Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC 15208 support 15209 15210 ---------------------------------------- 15211 11 June 2002. Summary of changes for this release. 15212 15213 15214 1) ACPI CA Core Subsystem Version 20020611: 15215 15216 Fixed a reported problem where constants such as Zero and One 15217 appearing within _PRT packages were not handled correctly within 15218 the resource manager code. Originally reported against the ASL 15219 compiler because the code generator now optimizes integers to 15220 their minimal AML representation (i.e. AML constants if possible.) 15221 The _PRT code now handles all AML constant opcodes correctly 15222 (Zero, One, Ones, Revision). 15223 15224 Fixed a problem with the Concatenate operator in the AML 15225 interpreter where a buffer result object was incorrectly marked as 15226 not fully evaluated, causing a run-time error of AE_AML_INTERNAL. 15227 15228 All package sub-objects are now fully resolved before they are 15229 returned from the external ACPI interfaces. This means that name 15230 strings are resolved to object handles, and constant operators 15231 (Zero, One, Ones, Revision) are resolved to Integers. 15232 15233 Implemented immediate resolution of the AML Constant opcodes 15234 (Zero, One, Ones, Revision) to Integer objects upon detection 15235 within the AML stream. This has simplified and reduced the 15236 generated code size of the subsystem by eliminating about 10 15237 switch statements for these constants (which previously were 15238 contained in Reference objects.) The complicating issues are that 15239 the Zero opcode is used as a "placeholder" for unspecified 15240 optional target operands and stores to constants are defined to be 15241 no-ops. 15242 15243 Code and Data Size: Current core subsystem library sizes are shown 15244 below. These are the code and data sizes for the acpica.lib 15245 produced by the Microsoft Visual C++ 6.0 compiler, and these 15246 values do not include any ACPI driver or OSPM code. The debug 15247 version of the code includes the debug output trace mechanism and 15248 has a larger code and data size. Note that these values will vary 15249 depending on the efficiency of the compiler and the compiler 15250 options used during generation. 15251 15252 Previous Release 15253 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 15254 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 15255 Current Release: 15256 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 15257 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 15258 15259 15260 2) Linux 15261 15262 15263 Added preliminary support for obtaining _TRA data for PCI root 15264 bridges (Bjorn Helgaas). 15265 15266 15267 3) iASL Compiler Version X2046: 15268 15269 Fixed a problem where the "_DDN" reserved name was defined to be a 15270 control method with one argument. There are no arguments, and 15271 _DDN does not have to be a control method. 15272 15273 Fixed a problem with the Linux version of the compiler where the 15274 source lines printed with error messages were the wrong lines. 15275 This turned out to be the "LF versus CR/LF" difference between 15276 Windows and Unix. This appears to be the longstanding issue 15277 concerning listing output and error messages. 15278 15279 Fixed a problem with the Linux version of compiler where opcode 15280 names within error messages were wrong. This was caused by a 15281 slight difference in the output of the Flex tool on Linux versus 15282 Windows. 15283 15284 Fixed a problem with the Linux compiler where the hex output files 15285 contained some garbage data caused by an internal buffer overrun. 15286 15287 15288 ---------------------------------------- 15289 17 May 2002. Summary of changes for this release. 15290 15291 15292 1) ACPI CA Core Subsystem Version 20020517: 15293 15294 Implemented a workaround to an BIOS bug discovered on the HP 15295 OmniBook where the FADT revision number and the table size are 15296 inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new 15297 behavior is to fallback to using only the ACPI 1.0 fields of the 15298 FADT if the table is too small to be a ACPI 2.0 table as claimed 15299 by the revision number. Although this is a BIOS bug, this is a 15300 case where the workaround is simple enough and with no side 15301 effects, so it seemed prudent to add it. A warning message is 15302 issued, however. 15303 15304 Implemented minimum size checks for the fixed-length ACPI tables - 15305 - the FADT and FACS, as well as consistency checks between the 15306 revision number and the table size. 15307 15308 Fixed a reported problem in the table override support where the 15309 new table pointer was incorrectly treated as a physical address 15310 instead of a logical address. 15311 15312 Eliminated the use of the AE_AML_ERROR exception and replaced it 15313 with more descriptive codes. 15314 15315 Fixed a problem where an exception would occur if an ASL Field was 15316 defined with no named Field Units underneath it (used by some 15317 index fields). 15318 15319 Code and Data Size: Current core subsystem library sizes are shown 15320 below. These are the code and data sizes for the acpica.lib 15321 produced by the Microsoft Visual C++ 6.0 compiler, and these 15322 values do not include any ACPI driver or OSPM code. The debug 15323 version of the code includes the debug output trace mechanism and 15324 has a larger code and data size. Note that these values will vary 15325 depending on the efficiency of the compiler and the compiler 15326 options used during generation. 15327 15328 Previous Release 15329 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 15330 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 15331 Current Release: 15332 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 15333 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 15334 15335 15336 15337 2) Linux 15338 15339 Much work done on ACPI init (MADT and PCI IRQ routing support). 15340 (Paul D. and Dominik Brodowski) 15341 15342 Fix PCI IRQ-related panic on boot (Sam Revitch) 15343 15344 Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno) 15345 15346 Fix "MHz" typo (Dominik Brodowski) 15347 15348 Fix RTC year 2000 issue (Dominik Brodowski) 15349 15350 Preclude multiple button proc entries (Eric Brunet) 15351 15352 Moved arch-specific code out of include/platform/aclinux.h 15353 15354 3) iASL Compiler Version X2044: 15355 15356 Implemented error checking for the string used in the EISAID macro 15357 (Usually used in the definition of the _HID object.) The code now 15358 strictly enforces the PnP format - exactly 7 characters, 3 15359 uppercase letters and 4 hex digits. 15360 15361 If a raw string is used in the definition of the _HID object 15362 (instead of the EISAID macro), the string must contain all 15363 alphanumeric characters (e.g., "*PNP0011" is not allowed because 15364 of the asterisk.) 15365 15366 Implemented checking for invalid use of ACPI reserved names for 15367 most of the name creation operators (Name, Device, Event, Mutex, 15368 OperationRegion, PowerResource, Processor, and ThermalZone.) 15369 Previously, this check was only performed for control methods. 15370 15371 Implemented an additional check on the Name operator to emit an 15372 error if a reserved name that must be implemented in ASL as a 15373 control method is used. We know that a reserved name must be a 15374 method if it is defined with input arguments. 15375 15376 The warning emitted when a namespace object reference is not found 15377 during the cross reference phase has been changed into an error. 15378 The "External" directive should be used for names defined in other 15379 modules. 15380 15381 15382 4) Tools and Utilities 15383 15384 The 16-bit tools (adump16 and aexec16) have been regenerated and 15385 tested. 15386 15387 Fixed a problem with the output of both acpidump and adump16 where 15388 the indentation of closing parentheses and brackets was not 15389 15390 aligned properly with the parent block. 15391 15392 15393 ---------------------------------------- 15394 03 May 2002. Summary of changes for this release. 15395 15396 15397 1) ACPI CA Core Subsystem Version 20020503: 15398 15399 Added support a new OSL interface that allows the host operating 15400 15401 system software to override the DSDT found in the firmware - 15402 AcpiOsTableOverride. With this interface, the OSL can examine the 15403 version of the firmware DSDT and replace it with a different one 15404 if desired. 15405 15406 Added new external interfaces for accessing ACPI registers from 15407 device drivers and other system software - AcpiGetRegister and 15408 AcpiSetRegister. This was simply an externalization of the 15409 existing AcpiHwBitRegister interfaces. 15410 15411 Fixed a regression introduced in the previous build where the 15412 ASL/AML CreateField operator always returned an error, 15413 "destination must be a NS Node". 15414 15415 Extended the maximum time (before failure) to successfully enable 15416 ACPI mode to 3 seconds. 15417 15418 Code and Data Size: Current core subsystem library sizes are shown 15419 below. These are the code and data sizes for the acpica.lib 15420 produced by the Microsoft Visual C++ 6.0 compiler, and these 15421 values do not include any ACPI driver or OSPM code. The debug 15422 version of the code includes the debug output trace mechanism and 15423 has a larger code and data size. Note that these values will vary 15424 depending on the efficiency of the compiler and the compiler 15425 options used during generation. 15426 15427 Previous Release 15428 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 15429 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 15430 Current Release: 15431 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 15432 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 15433 15434 15435 2) Linux 15436 15437 Enhanced ACPI init code for SMP. We are now fully MPS and $PIR- 15438 free. While 3 out of 4 of our in-house systems work fine, the last 15439 one still hangs when testing the LAPIC timer. 15440 15441 Renamed many files in 2.5 kernel release to omit "acpi_" from the 15442 name. 15443 15444 Added warning on boot for Presario 711FR. 15445 15446 Sleep improvements (Pavel Machek) 15447 15448 ACPI can now be built without CONFIG_PCI enabled. 15449 15450 IA64: Fixed memory map functions (JI Lee) 15451 15452 15453 3) iASL Compiler Version X2043: 15454 15455 Added support to allow the compiler to be integrated into the MS 15456 VC++ development environment for one-button compilation of single 15457 files or entire projects -- with error-to-source-line mapping. 15458 15459 Implemented support for compile-time constant folding for the 15460 Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0 15461 specification. This allows the ASL writer to use expressions 15462 instead of Integer/Buffer/String constants in terms that must 15463 evaluate to constants at compile time and will also simplify the 15464 emitted AML in any such sub-expressions that can be folded 15465 (evaluated at compile-time.) This increases the size of the 15466 compiler significantly because a portion of the ACPI CA AML 15467 interpreter is included within the compiler in order to pre- 15468 evaluate constant expressions. 15469 15470 15471 Fixed a problem with the "Unicode" ASL macro that caused the 15472 compiler to fault. (This macro is used in conjunction with the 15473 _STR reserved name.) 15474 15475 Implemented an AML opcode optimization to use the Zero, One, and 15476 Ones opcodes where possible to further reduce the size of integer 15477 constants and thus reduce the overall size of the generated AML 15478 code. 15479 15480 Implemented error checking for new reserved terms for ACPI version 15481 2.0A. 15482 15483 Implemented the -qr option to display the current list of ACPI 15484 reserved names known to the compiler. 15485 15486 Implemented the -qc option to display the current list of ASL 15487 operators that are allowed within constant expressions and can 15488 therefore be folded at compile time if the operands are constants. 15489 15490 15491 4) Documentation 15492 15493 Updated the Programmer's Reference for new interfaces, data types, 15494 and memory allocation model options. 15495 15496 Updated the iASL Compiler User Reference to apply new format and 15497 add information about new features and options. 15498 15499 ---------------------------------------- 15500 19 April 2002. Summary of changes for this release. 15501 15502 1) ACPI CA Core Subsystem Version 20020419: 15503 15504 The source code base for the Core Subsystem has been completely 15505 cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit 15506 versions. The Lint option files used are included in the 15507 /acpi/generate/lint directory. 15508 15509 Implemented enhanced status/error checking across the entire 15510 Hardware manager subsystem. Any hardware errors (reported from 15511 the OSL) are now bubbled up and will abort a running control 15512 method. 15513 15514 15515 Fixed a problem where the per-ACPI-table integer width (32 or 64) 15516 was stored only with control method nodes, causing a fault when 15517 non-control method code was executed during table loading. The 15518 solution implemented uses a global variable to indicate table 15519 width across the entire ACPI subsystem. Therefore, ACPI CA does 15520 not support mixed integer widths across different ACPI tables 15521 (DSDT, SSDT). 15522 15523 Fixed a problem where NULL extended fields (X fields) in an ACPI 15524 2.0 ACPI FADT caused the table load to fail. Although the 15525 existing ACPI specification is a bit fuzzy on this topic, the new 15526 behavior is to fall back on a ACPI 1.0 field if the corresponding 15527 ACPI 2.0 X field is zero (even though the table revision indicates 15528 a full ACPI 2.0 table.) The ACPI specification will be updated to 15529 clarify this issue. 15530 15531 Fixed a problem with the SystemMemory operation region handler 15532 where memory was always accessed byte-wise even if the AML- 15533 specified access width was larger than a byte. This caused 15534 problems on systems with memory-mapped I/O. Memory is now 15535 accessed with the width specified. On systems that do not support 15536 non-aligned transfers, a check is made to guarantee proper address 15537 alignment before proceeding in order to avoid an AML-caused 15538 alignment fault within the kernel. 15539 15540 15541 Fixed a problem with the ExtendedIrq resource where only one byte 15542 of the 4-byte Irq field was extracted. 15543 15544 Fixed the AcpiExDigitsNeeded() procedure to support _UID. This 15545 function was out of date and required a rewrite. 15546 15547 Code and Data Size: Current core subsystem library sizes are shown 15548 below. These are the code and data sizes for the acpica.lib 15549 produced by the Microsoft Visual C++ 6.0 compiler, and these 15550 values do not include any ACPI driver or OSPM code. The debug 15551 version of the code includes the debug output trace mechanism and 15552 has a larger code and data size. Note that these values will vary 15553 depending on the efficiency of the compiler and the compiler 15554 options used during generation. 15555 15556 Previous Release 15557 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 15558 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 15559 Current Release: 15560 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 15561 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 15562 15563 15564 2) Linux 15565 15566 PCI IRQ routing fixes (Dominik Brodowski) 15567 15568 15569 3) iASL Compiler Version X2042: 15570 15571 Implemented an additional compile-time error check for a field 15572 unit whose size + minimum access width would cause a run-time 15573 access beyond the end-of-region. Previously, only the field size 15574 itself was checked. 15575 15576 The Core subsystem and iASL compiler now share a common parse 15577 object in preparation for compile-time evaluation of the type 15578 3/4/5 ASL operators. 15579 15580 15581 ---------------------------------------- 15582 Summary of changes for this release: 03_29_02 15583 15584 1) ACPI CA Core Subsystem Version 20020329: 15585 15586 Implemented support for late evaluation of TermArg operands to 15587 Buffer and Package objects. This allows complex expressions to be 15588 used in the declarations of these object types. 15589 15590 Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI 15591 1.0, if the field was larger than 32 bits, it was returned as a 15592 buffer - otherwise it was returned as an integer. In ACPI 2.0, 15593 the field is returned as a buffer only if the field is larger than 15594 64 bits. The TableRevision is now considered when making this 15595 conversion to avoid incompatibility with existing ASL code. 15596 15597 Implemented logical addressing for AcpiOsGetRootPointer. This 15598 allows an RSDP with either a logical or physical address. With 15599 this support, the host OS can now override all ACPI tables with 15600 one logical RSDP. Includes implementation of "typed" pointer 15601 support to allow a common data type for both physical and logical 15602 pointers internally. This required a change to the 15603 AcpiOsGetRootPointer interface. 15604 15605 Implemented the use of ACPI 2.0 Generic Address Structures for all 15606 GPE, Fixed Event, and PM Timer I/O. This allows the use of memory 15607 mapped I/O for these ACPI features. 15608 15609 Initialization now ignores not only non-required tables (All 15610 tables other than the FADT, FACS, DSDT, and SSDTs), but also does 15611 not validate the table headers of unrecognized tables. 15612 15613 Fixed a problem where a notify handler could only be 15614 installed/removed on an object of type Device. All "notify" 15615 15616 objects are now supported -- Devices, Processor, Power, and 15617 Thermal. 15618 15619 Removed most verbosity from the ACPI_DB_INFO debug level. Only 15620 critical information is returned when this debug level is enabled. 15621 15622 Code and Data Size: Current core subsystem library sizes are shown 15623 below. These are the code and data sizes for the acpica.lib 15624 produced by the Microsoft Visual C++ 6.0 compiler, and these 15625 values do not include any ACPI driver or OSPM code. The debug 15626 version of the code includes the debug output trace mechanism and 15627 has a larger code and data size. Note that these values will vary 15628 depending on the efficiency of the compiler and the compiler 15629 options used during generation. 15630 15631 Previous Release 15632 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 15633 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 15634 Current Release: 15635 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 15636 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 15637 15638 15639 2) Linux: 15640 15641 The processor driver (acpi_processor.c) now fully supports ACPI 15642 2.0-based processor performance control (e.g. Intel(R) 15643 SpeedStep(TM) technology) Note that older laptops that only have 15644 the Intel "applet" interface are not supported through this. The 15645 'limit' and 'performance' interface (/proc) are fully functional. 15646 [Note that basic policy for controlling performance state 15647 transitions will be included in the next version of ospmd.] The 15648 idle handler was modified to more aggressively use C2, and PIIX4 15649 errata handling underwent a complete overhaul (big thanks to 15650 Dominik Brodowski). 15651 15652 Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR- 15653 based devices in the ACPI namespace are now dynamically bound 15654 (associated) with their PCI counterparts (e.g. PCI1->01:00.0). 15655 This allows, among other things, ACPI to resolve bus numbers for 15656 subordinate PCI bridges. 15657 15658 Enhanced PCI IRQ routing to get the proper bus number for _PRT 15659 entries defined underneath PCI bridges. 15660 15661 Added IBM 600E to bad bios list due to invalid _ADR value for 15662 PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing. 15663 15664 In the process of adding full MADT support (e.g. IOAPIC) for IA32 15665 (acpi.c, mpparse.c) -- stay tuned. 15666 15667 Added back visual differentiation between fixed-feature and 15668 control-method buttons in dmesg. Buttons are also subtyped (e.g. 15669 button/power/PWRF) to simplify button identification. 15670 15671 We no longer use -Wno-unused when compiling debug. Please ignore 15672 any "_THIS_MODULE defined but not used" messages. 15673 15674 Can now shut down the system using "magic sysrq" key. 15675 15676 15677 3) iASL Compiler version 2041: 15678 15679 Fixed a problem where conversion errors for hex/octal/decimal 15680 constants were not reported. 15681 15682 Implemented a fix for the General Register template Address field. 15683 This field was 8 bits when it should be 64. 15684 15685 Fixed a problem where errors/warnings were no longer being emitted 15686 within the listing output file. 15687 15688 Implemented the ACPI 2.0A restriction on ACPI Table Signatures to 15689 exactly 4 characters, alphanumeric only. 15690 15691 15692 15693 15694 ---------------------------------------- 15695 Summary of changes for this release: 03_08_02 15696 15697 15698 1) ACPI CA Core Subsystem Version 20020308: 15699 15700 Fixed a problem with AML Fields where the use of the "AccessAny" 15701 keyword could cause an interpreter error due to attempting to read 15702 or write beyond the end of the parent Operation Region. 15703 15704 Fixed a problem in the SystemMemory Operation Region handler where 15705 an attempt was made to map memory beyond the end of the region. 15706 This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY" 15707 errors on some Linux systems. 15708 15709 Fixed a problem where the interpreter/namespace "search to root" 15710 algorithm was not functioning for some object types. Relaxed the 15711 internal restriction on the search to allow upsearches for all 15712 external object types as well as most internal types. 15713 15714 15715 2) Linux: 15716 15717 We now use safe_halt() macro versus individual calls to sti | hlt. 15718 15719 Writing to the processor limit interface should now work. "echo 1" 15720 will increase the limit, 2 will decrease, and 0 will reset to the 15721 15722 default. 15723 15724 15725 3) ASL compiler: 15726 15727 Fixed segfault on Linux version. 15728 15729 15730 ---------------------------------------- 15731 Summary of changes for this release: 02_25_02 15732 15733 1) ACPI CA Core Subsystem: 15734 15735 15736 Fixed a problem where the GPE bit masks were not initialized 15737 properly, causing erratic GPE behavior. 15738 15739 Implemented limited support for multiple calling conventions. The 15740 code can be generated with either the VPL (variable parameter 15741 list, or "C") convention, or the FPL (fixed parameter list, or 15742 "Pascal") convention. The core subsystem is about 3.4% smaller 15743 when generated with FPL. 15744 15745 15746 2) Linux 15747 15748 Re-add some /proc/acpi/event functionality that was lost during 15749 the rewrite 15750 15751 Resolved issue with /proc events for fixed-feature buttons showing 15752 up as the system device. 15753 15754 Fixed checks on C2/C3 latencies to be inclusive of maximum values. 15755 15756 Replaced AE_ERRORs in acpi_osl.c with more specific error codes. 15757 15758 Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi" 15759 15760 Fixed limit interface & usage to fix bugs with passive cooling 15761 hysterisis. 15762 15763 Restructured PRT support. 15764 15765 15766 ---------------------------------------- 15767 Summary of changes for this label: 02_14_02 15768 15769 15770 1) ACPI CA Core Subsystem: 15771 15772 Implemented support in AcpiLoadTable to allow loading of FACS and 15773 FADT tables. 15774 15775 Suport for the now-obsolete interim 0.71 64-bit ACPI tables has 15776 been removed. All 64-bit platforms should be migrated to the ACPI 15777 2.0 tables. The actbl71.h header has been removed from the source 15778 tree. 15779 15780 All C macros defined within the subsystem have been prefixed with 15781 "ACPI_" to avoid collision with other system include files. 15782 15783 Removed the return value for the two AcpiOsPrint interfaces, since 15784 it is never used and causes lint warnings for ignoring the return 15785 value. 15786 15787 Added error checking to all internal mutex acquire and release 15788 calls. Although a failure from one of these interfaces is 15789 probably a fatal system error, these checks will cause the 15790 immediate abort of the currently executing method or interface. 15791 15792 Fixed a problem where the AcpiSetCurrentResources interface could 15793 fault. This was a side effect of the deployment of the new memory 15794 allocation model. 15795 15796 Fixed a couple of problems with the Global Lock support introduced 15797 in the last major build. The "common" (1.0/2.0) internal FACS was 15798 being overwritten with the FACS signature and clobbering the 15799 Global Lock pointer. Also, the actual firmware FACS was being 15800 unmapped after construction of the "common" FACS, preventing 15801 access to the actual Global Lock field within it. The "common" 15802 internal FACS is no longer installed as an actual ACPI table; it 15803 is used simply as a global. 15804 15805 Code and Data Size: Current core subsystem library sizes are shown 15806 below. These are the code and data sizes for the acpica.lib 15807 produced by the Microsoft Visual C++ 6.0 compiler, and these 15808 values do not include any ACPI driver or OSPM code. The debug 15809 version of the code includes the debug output trace mechanism and 15810 has a larger code and data size. Note that these values will vary 15811 depending on the efficiency of the compiler and the compiler 15812 options used during generation. 15813 15814 Previous Release (02_07_01) 15815 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 15816 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 15817 Current Release: 15818 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 15819 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 15820 15821 15822 2) Linux 15823 15824 Updated Linux-specific code for core macro and OSL interface 15825 changes described above. 15826 15827 Improved /proc/acpi/event. It now can be opened only once and has 15828 proper poll functionality. 15829 15830 Fixed and restructured power management (acpi_bus). 15831 15832 Only create /proc "view by type" when devices of that class exist. 15833 15834 Fixed "charging/discharging" bug (and others) in acpi_battery. 15835 15836 Improved thermal zone code. 15837 15838 15839 3) ASL Compiler, version X2039: 15840 15841 15842 Implemented the new compiler restriction on ASL String hex/octal 15843 escapes to non-null, ASCII values. An error results if an invalid 15844 value is used. (This will require an ACPI 2.0 specification 15845 change.) 15846 15847 AML object labels that are output to the optional C and ASM source 15848 are now prefixed with both the ACPI table signature and table ID 15849 to help guarantee uniqueness within a large BIOS project. 15850 15851 15852 ---------------------------------------- 15853 Summary of changes for this label: 02_01_02 15854 15855 1) ACPI CA Core Subsystem: 15856 15857 ACPI 2.0 support is complete in the entire Core Subsystem and the 15858 ASL compiler. All new ACPI 2.0 operators are implemented and all 15859 other changes for ACPI 2.0 support are complete. With 15860 simultaneous code and data optimizations throughout the subsystem, 15861 ACPI 2.0 support has been implemented with almost no additional 15862 cost in terms of code and data size. 15863 15864 Implemented a new mechanism for allocation of return buffers. If 15865 the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will 15866 be allocated on behalf of the caller. Consolidated all return 15867 buffer validation and allocation to a common procedure. Return 15868 buffers will be allocated via the primary OSL allocation interface 15869 since it appears that a separate pool is not needed by most users. 15870 If a separate pool is required for these buffers, the caller can 15871 still use the original mechanism and pre-allocate the buffer(s). 15872 15873 Implemented support for string operands within the DerefOf 15874 operator. 15875 15876 Restructured the Hardware and Event managers to be table driven, 15877 simplifying the source code and reducing the amount of generated 15878 code. 15879 15880 Split the common read/write low-level ACPI register bitfield 15881 procedure into a separate read and write, simplifying the code 15882 considerably. 15883 15884 Obsoleted the AcpiOsCallocate OSL interface. This interface was 15885 used only a handful of times and didn't have enough critical mass 15886 for a separate interface. Replaced with a common calloc procedure 15887 in the core. 15888 15889 Fixed a reported problem with the GPE number mapping mechanism 15890 that allows GPE1 numbers to be non-contiguous with GPE0. 15891 Reorganized the GPE information and shrunk a large array that was 15892 originally large enough to hold info for all possible GPEs (256) 15893 to simply large enough to hold all GPEs up to the largest GPE 15894 number on the machine. 15895 15896 Fixed a reported problem with resource structure alignment on 64- 15897 bit platforms. 15898 15899 Changed the AcpiEnableEvent and AcpiDisableEvent external 15900 interfaces to not require any flags for the common case of 15901 enabling/disabling a GPE. 15902 15903 Implemented support to allow a "Notify" on a Processor object. 15904 15905 Most TBDs in comments within the source code have been resolved 15906 and eliminated. 15907 15908 15909 Fixed a problem in the interpreter where a standalone parent 15910 prefix (^) was not handled correctly in the interpreter and 15911 debugger. 15912 15913 Removed obsolete and unnecessary GPE save/restore code. 15914 15915 Implemented Field support in the ASL Load operator. This allows a 15916 table to be loaded from a named field, in addition to loading a 15917 table directly from an Operation Region. 15918 15919 Implemented timeout and handle support in the external Global Lock 15920 interfaces. 15921 15922 Fixed a problem in the AcpiDump utility where pathnames were no 15923 longer being generated correctly during the dump of named objects. 15924 15925 Modified the AML debugger to give a full display of if/while 15926 predicates instead of just one AML opcode at a time. (The 15927 predicate can have several nested ASL statements.) The old method 15928 was confusing during single stepping. 15929 15930 Code and Data Size: Current core subsystem library sizes are shown 15931 below. These are the code and data sizes for the acpica.lib 15932 produced by the Microsoft Visual C++ 6.0 compiler, and these 15933 values do not include any ACPI driver or OSPM code. The debug 15934 version of the code includes the debug output trace mechanism and 15935 has a larger code and data size. Note that these values will vary 15936 depending on the efficiency of the compiler and the compiler 15937 options used during generation. 15938 15939 Previous Release (12_18_01) 15940 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 15941 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 15942 Current Release: 15943 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 15944 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 15945 15946 2) Linux 15947 15948 Implemented fix for PIIX reverse throttling errata (Processor 15949 driver) 15950 15951 Added new Limit interface (Processor and Thermal drivers) 15952 15953 New thermal policy (Thermal driver) 15954 15955 Many updates to /proc 15956 15957 Battery "low" event support (Battery driver) 15958 15959 Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers) 15960 15961 IA32 - IA64 initialization unification, no longer experimental 15962 15963 Menuconfig options redesigned 15964 15965 3) ASL Compiler, version X2037: 15966 15967 Implemented several new output features to simplify integration of 15968 AML code into firmware: 1) Output the AML in C source code with 15969 labels for each named ASL object. The original ASL source code 15970 is interleaved as C comments. 2) Output the AML in ASM source code 15971 with labels and interleaved ASL source. 3) Output the AML in 15972 raw hex table form, in either C or ASM. 15973 15974 Implemented support for optional string parameters to the 15975 LoadTable operator. 15976 15977 Completed support for embedded escape sequences within string 15978 literals. The compiler now supports all single character escapes 15979 as well as the Octal and Hex escapes. Note: the insertion of a 15980 null byte into a string literal (via the hex/octal escape) causes 15981 the string to be immediately terminated. A warning is issued. 15982 15983 Fixed a problem where incorrect AML was generated for the case 15984 where an ASL namepath consists of a single parent prefix ( 15985 15986 ) with no trailing name segments. 15987 15988 The compiler has been successfully generated with a 64-bit C 15989 compiler. 15990 15991 15992 15993 15994 ---------------------------------------- 15995 Summary of changes for this label: 12_18_01 15996 15997 1) Linux 15998 15999 Enhanced blacklist with reason and severity fields. Any table's 16000 signature may now be used to identify a blacklisted system. 16001 16002 Call _PIC control method to inform the firmware which interrupt 16003 model the OS is using. Turn on any disabled link devices. 16004 16005 Cleaned up busmgr /proc error handling (Andreas Dilger) 16006 16007 2) ACPI CA Core Subsystem: 16008 16009 Implemented ACPI 2.0 semantics for the "Break" operator (Exit from 16010 while loop) 16011 16012 Completed implementation of the ACPI 2.0 "Continue", 16013 "ConcatenateResTemplate", "DataTableRegion", and "LoadTable" 16014 operators. All new ACPI 2.0 operators are now implemented in both 16015 the ASL compiler and the AML interpreter. The only remaining ACPI 16016 2.0 task is support for the String data type in the DerefOf 16017 operator. Fixed a problem with AcquireMutex where the status code 16018 was lost if the caller had to actually wait for the mutex. 16019 16020 Increased the maximum ASL Field size from 64K bits to 4G bits. 16021 16022 Completed implementation of the external Global Lock interfaces -- 16023 AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and 16024 Handler parameters were added. 16025 16026 Completed another pass at removing warnings and issues when 16027 compiling with 64-bit compilers. The code now compiles cleanly 16028 with the Intel 64-bit C/C++ compiler. Most notably, the pointer 16029 add and subtract (diff) macros have changed considerably. 16030 16031 16032 Created and deployed a new ACPI_SIZE type that is 64-bits wide on 16033 64-bit platforms, 32-bits on all others. This type is used 16034 wherever memory allocation and/or the C sizeof() operator is used, 16035 and affects the OSL memory allocation interfaces AcpiOsAllocate 16036 and AcpiOsCallocate. 16037 16038 Implemented sticky user breakpoints in the AML debugger. 16039 16040 Code and Data Size: Current core subsystem library sizes are shown 16041 below. These are the code and data sizes for the acpica.lib 16042 produced by the Microsoft Visual C++ 6.0 compiler, and these 16043 values do not include any ACPI driver or OSPM code. The debug 16044 version of the code includes the debug output trace mechanism and 16045 has a larger code and data size. Note that these values will vary 16046 depending on the efficiency of the compiler and the compiler 16047 options used during generation. 16048 16049 Previous Release (12_05_01) 16050 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 16051 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 16052 Current Release: 16053 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 16054 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 16055 16056 3) ASL Compiler, version X2034: 16057 16058 Now checks for (and generates an error if detected) the use of a 16059 Break or Continue statement without an enclosing While statement. 16060 16061 16062 Successfully generated the compiler with the Intel 64-bit C 16063 compiler. 16064 16065 ---------------------------------------- 16066 Summary of changes for this label: 12_05_01 16067 16068 1) ACPI CA Core Subsystem: 16069 16070 The ACPI 2.0 CopyObject operator is fully implemented. This 16071 operator creates a new copy of an object (and is also used to 16072 bypass the "implicit conversion" mechanism of the Store operator.) 16073 16074 The ACPI 2.0 semantics for the SizeOf operator are fully 16075 implemented. The change is that performing a SizeOf on a 16076 reference object causes an automatic dereference of the object to 16077 tha actual value before the size is evaluated. This behavior was 16078 undefined in ACPI 1.0. 16079 16080 The ACPI 2.0 semantics for the Extended IRQ resource descriptor 16081 have been implemented. The interrupt polarity and mode are now 16082 independently set. 16083 16084 Fixed a problem where ASL Constants (Zero, One, Ones, Revision) 16085 appearing in Package objects were not properly converted to 16086 integers when the internal Package was converted to an external 16087 object (via the AcpiEvaluateObject interface.) 16088 16089 Fixed a problem with the namespace object deletion mechanism for 16090 objects created by control methods. There were two parts to this 16091 problem: 1) Objects created during the initialization phase method 16092 parse were not being deleted, and 2) The object owner ID mechanism 16093 to track objects was broken. 16094 16095 Fixed a problem where the use of the ASL Scope operator within a 16096 control method would result in an invalid opcode exception. 16097 16098 Fixed a problem introduced in the previous label where the buffer 16099 length required for the _PRT structure was not being returned 16100 correctly. 16101 16102 Code and Data Size: Current core subsystem library sizes are shown 16103 below. These are the code and data sizes for the acpica.lib 16104 produced by the Microsoft Visual C++ 6.0 compiler, and these 16105 values do not include any ACPI driver or OSPM code. The debug 16106 version of the code includes the debug output trace mechanism and 16107 has a larger code and data size. Note that these values will vary 16108 depending on the efficiency of the compiler and the compiler 16109 options used during generation. 16110 16111 Previous Release (11_20_01) 16112 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 16113 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 16114 16115 Current Release: 16116 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 16117 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 16118 16119 2) Linux: 16120 16121 Updated all files to apply cleanly against 2.4.16. 16122 16123 Added basic PCI Interrupt Routing Table (PRT) support for IA32 16124 (acpi_pci.c), and unified the PRT code for IA32 and IA64. This 16125 version supports both static and dyanmic PRT entries, but dynamic 16126 entries are treated as if they were static (not yet 16127 reconfigurable). Architecture- specific code to use this data is 16128 absent on IA32 but should be available shortly. 16129 16130 Changed the initialization sequence to start the ACPI interpreter 16131 (acpi_init) prior to initialization of the PCI driver (pci_init) 16132 in init/main.c. This ordering is required to support PRT and 16133 facilitate other (future) enhancement. A side effect is that the 16134 ACPI bus driver and certain device drivers can no longer be loaded 16135 as modules. 16136 16137 Modified the 'make menuconfig' options to allow PCI Interrupt 16138 Routing support to be included without the ACPI Bus and other 16139 device drivers. 16140 16141 3) ASL Compiler, version X2033: 16142 16143 Fixed some issues with the use of the new CopyObject and 16144 DataTableRegion operators. Both are fully functional. 16145 16146 ---------------------------------------- 16147 Summary of changes for this label: 11_20_01 16148 16149 20 November 2001. Summary of changes for this release. 16150 16151 1) ACPI CA Core Subsystem: 16152 16153 Updated Index support to match ACPI 2.0 semantics. Storing a 16154 Integer, String, or Buffer to an Index of a Buffer will store only 16155 the least-significant byte of the source to the Indexed buffer 16156 byte. Multiple writes are not performed. 16157 16158 Fixed a problem where the access type used in an AccessAs ASL 16159 operator was not recorded correctly into the field object. 16160 16161 Fixed a problem where ASL Event objects were created in a 16162 signalled state. Events are now created in an unsignalled state. 16163 16164 The internal object cache is now purged after table loading and 16165 initialization to reduce the use of dynamic kernel memory -- on 16166 the assumption that object use is greatest during the parse phase 16167 of the entire table (versus the run-time use of individual control 16168 methods.) 16169 16170 ACPI 2.0 variable-length packages are now fully operational. 16171 16172 Code and Data Size: Code and Data optimizations have permitted new 16173 feature development with an actual reduction in the library size. 16174 Current core subsystem library sizes are shown below. These are 16175 the code and data sizes for the acpica.lib produced by the 16176 Microsoft Visual C++ 6.0 compiler, and these values do not include 16177 any ACPI driver or OSPM code. The debug version of the code 16178 includes the debug output trace mechanism and has a larger code 16179 and data size. Note that these values will vary depending on the 16180 efficiency of the compiler and the compiler options used during 16181 generation. 16182 16183 Previous Release (11_09_01): 16184 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 16185 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 16186 16187 Current Release: 16188 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 16189 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 16190 16191 2) Linux: 16192 16193 Enhanced the ACPI boot-time initialization code to allow the use 16194 of Local APIC tables for processor enumeration on IA-32, and to 16195 pave the way for a fully MPS-free boot (on SMP systems) in the 16196 near future. This functionality replaces 16197 arch/i386/kernel/acpitables.c, which was introduced in an earlier 16198 2.4.15-preX release. To enable this feature you must add 16199 "acpi_boot=on" to the kernel command line -- see the help entry 16200 for CONFIG_ACPI_BOOT for more information. An IA-64 release is in 16201 the works... 16202 16203 Restructured the configuration options to allow boot-time table 16204 parsing support without inclusion of the ACPI Interpreter (and 16205 other) code. 16206 16207 NOTE: This release does not include fixes for the reported events, 16208 power-down, and thermal passive cooling issues (coming soon). 16209 16210 3) ASL Compiler: 16211 16212 Added additional typechecking for Fields within restricted access 16213 Operation Regions. All fields within EC and CMOS regions must be 16214 declared with ByteAcc. All fields withing SMBus regions must be 16215 declared with the BufferAcc access type. 16216 16217 Fixed a problem where the listing file output of control methods 16218 no longer interleaved the actual AML code with the ASL source 16219 code. 16220 16221 16222 16223 16224 ---------------------------------------- 16225 Summary of changes for this label: 11_09_01 16226 16227 1) ACPI CA Core Subsystem: 16228 16229 Implemented ACPI 2.0-defined support for writes to fields with a 16230 Buffer, String, or Integer source operand that is smaller than the 16231 target field. In these cases, the source operand is zero-extended 16232 to fill the target field. 16233 16234 Fixed a problem where a Field starting bit offset (within the 16235 parent operation region) was calculated incorrectly if the 16236 16237 alignment of the field differed from the access width. This 16238 affected CreateWordField, CreateDwordField, CreateQwordField, and 16239 possibly other fields that use the "AccessAny" keyword. 16240 16241 Fixed a problem introduced in the 11_02_01 release where indirect 16242 stores through method arguments did not operate correctly. 16243 16244 2) Linux: 16245 16246 Implemented boot-time ACPI table parsing support 16247 (CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code 16248 facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than 16249 legacy BIOS interfaces (e.g. MPS) for the configuration of system 16250 processors, memory, and interrupts during setup_arch(). Note that 16251 this patch does not include the required architecture-specific 16252 changes required to apply this information -- subsequent patches 16253 will be posted for both IA32 and IA64 to achieve this. 16254 16255 Added low-level sleep support for IA32 platforms, courtesy of Pat 16256 Mochel. This allows IA32 systems to transition to/from various 16257 sleeping states (e.g. S1, S3), although the lack of a centralized 16258 driver model and power-manageable drivers will prevent its 16259 (successful) use on most systems. 16260 16261 Revamped the ACPI 'menuconfig' layout: created new "ACPI Support" 16262 submenu, unified IA32 and IA64 options, added new "Boot using ACPI 16263 tables" option, etc. 16264 16265 Increased the default timeout for the EC driver from 1ms to 10ms 16266 (1000 cycles of 10us) to try to address AE_TIME errors during EC 16267 transactions. 16268 16269 ---------------------------------------- 16270 Summary of changes for this label: 11_02_01 16271 16272 1) ACPI CA Core Subsystem: 16273 16274 ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access 16275 (QWordAcc keyword). All ACPI 2.0 64-bit support is now 16276 implemented. 16277 16278 OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required 16279 changes to support ACPI 2.0 Qword field access. Read/Write 16280 PciConfiguration(), Read/Write Memory(), and Read/Write Port() now 16281 accept an ACPI_INTEGER (64 bits) as the value parameter. Also, 16282 the value parameter for the address space handler interface is now 16283 an ACPI_INTEGER. OSL implementations of these interfaces must now 16284 handle the case where the Width parameter is 64. 16285 16286 Index Fields: Fixed a problem where unaligned bit assembly and 16287 disassembly for IndexFields was not supported correctly. 16288 16289 Index and Bank Fields: Nested Index and Bank Fields are now 16290 supported. During field access, a check is performed to ensure 16291 that the value written to an Index or Bank register is not out of 16292 the range of the register. The Index (or Bank) register is 16293 written before each access to the field data. Future support will 16294 include allowing individual IndexFields to be wider than the 16295 DataRegister width. 16296 16297 Fields: Fixed a problem where the AML interpreter was incorrectly 16298 attempting to write beyond the end of a Field/OpRegion. This was 16299 a boundary case that occurred when a DWORD field was written to a 16300 BYTE access OpRegion, forcing multiple writes and causing the 16301 interpreter to write one datum too many. 16302 16303 Fields: Fixed a problem with Field/OpRegion access where the 16304 starting bit address of a field was incorrectly calculated if the 16305 current access type was wider than a byte (WordAcc, DwordAcc, or 16306 QwordAcc). 16307 16308 Fields: Fixed a problem where forward references to individual 16309 FieldUnits (individual Field names within a Field definition) were 16310 not resolved during the AML table load. 16311 16312 Fields: Fixed a problem where forward references from a Field 16313 definition to the parent Operation Region definition were not 16314 resolved during the AML table load. 16315 16316 Fields: Duplicate FieldUnit names within a scope are now detected 16317 during AML table load. 16318 16319 Acpi Interfaces: Fixed a problem where the AcpiGetName() interface 16320 returned an incorrect name for the root node. 16321 16322 Code and Data Size: Code and Data optimizations have permitted new 16323 feature development with an actual reduction in the library size. 16324 Current core subsystem library sizes are shown below. These are 16325 the code and data sizes for the acpica.lib produced by the 16326 Microsoft Visual C++ 6.0 compiler, and these values do not include 16327 any ACPI driver or OSPM code. The debug version of the code 16328 includes the debug output trace mechanism and has a larger code 16329 and data size. Note that these values will vary depending on the 16330 efficiency of the compiler and the compiler options used during 16331 generation. 16332 16333 Previous Release (10_18_01): 16334 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 16335 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 16336 16337 Current Release: 16338 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 16339 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 16340 16341 2) Linux: 16342 16343 Improved /proc processor output (Pavel Machek) Re-added 16344 MODULE_LICENSE("GPL") to all modules. 16345 16346 3) ASL Compiler version X2030: 16347 16348 Duplicate FieldUnit names within a scope are now detected and 16349 flagged as errors. 16350 16351 4) Documentation: 16352 16353 Programmer Reference updated to reflect OSL and address space 16354 handler interface changes described above. 16355 16356 ---------------------------------------- 16357 Summary of changes for this label: 10_18_01 16358 16359 ACPI CA Core Subsystem: 16360 16361 Fixed a problem with the internal object reference count mechanism 16362 that occasionally caused premature object deletion. This resolves 16363 all of the outstanding problem reports where an object is deleted 16364 in the middle of an interpreter evaluation. Although this problem 16365 only showed up in rather obscure cases, the solution to the 16366 problem involved an adjustment of all reference counts involving 16367 objects attached to namespace nodes. 16368 16369 Fixed a problem with Field support in the interpreter where 16370 writing to an aligned field whose length is an exact multiple (2 16371 or greater) of the field access granularity would cause an attempt 16372 to write beyond the end of the field. 16373 16374 The top level AML opcode execution functions within the 16375 interpreter have been renamed with a more meaningful and 16376 consistent naming convention. The modules exmonad.c and 16377 exdyadic.c were eliminated. New modules are exoparg1.c, 16378 exoparg2.c, exoparg3.c, and exoparg6.c. 16379 16380 Support for the ACPI 2.0 "Mid" ASL operator has been implemented. 16381 16382 Fixed a problem where the AML debugger was causing some internal 16383 objects to not be deleted during subsystem termination. 16384 16385 Fixed a problem with the external AcpiEvaluateObject interface 16386 where the subsystem would fault if the named object to be 16387 evaluated refered to a constant such as Zero, Ones, etc. 16388 16389 Fixed a problem with IndexFields and BankFields where the 16390 subsystem would fault if the index, data, or bank registers were 16391 not defined in the same scope as the field itself. 16392 16393 Added printf format string checking for compilers that support 16394 this feature. Corrected more than 50 instances of issues with 16395 format specifiers within invocations of ACPI_DEBUG_PRINT 16396 throughout the core subsystem code. 16397 16398 The ASL "Revision" operator now returns the ACPI support level 16399 implemented in the core - the value "2" since the ACPI 2.0 support 16400 is more than 50% implemented. 16401 16402 Enhanced the output of the AML debugger "dump namespace" command 16403 to output in a more human-readable form. 16404 16405 Current core subsystem library code sizes are shown below. These 16406 16407 are the code and data sizes for the acpica.lib produced by the 16408 Microsoft Visual C++ 6.0 compiler, and these values do not include 16409 any ACPI driver or OSPM code. The debug version of the code 16410 includes the full debug trace mechanism -- leading to a much 16411 16412 larger code and data size. Note that these values will vary 16413 depending on the efficiency of the compiler and the compiler 16414 options used during generation. 16415 16416 Previous Label (09_20_01): 16417 Non-Debug Version: 65K Code, 5K Data, 70K Total 16418 Debug Version: 138K Code, 58K Data, 196K Total 16419 16420 This Label: 16421 16422 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 16423 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 16424 16425 Linux: 16426 16427 Implemented a "Bad BIOS Blacklist" to track machines that have 16428 known ASL/AML problems. 16429 16430 Enhanced the /proc interface for the thermal zone driver and added 16431 support for _HOT (the critical suspend trip point). The 'info' 16432 file now includes threshold/policy information, and allows setting 16433 of _SCP (cooling preference) and _TZP (polling frequency) values 16434 to the 'info' file. Examples: "echo tzp=5 > info" sets the polling 16435 frequency to 5 seconds, and "echo scp=1 > info" sets the cooling 16436 preference to the passive/quiet mode (if supported by the ASL). 16437 16438 Implemented a workaround for a gcc bug that resuted in an OOPs 16439 when loading the control method battery driver. 16440 16441 ---------------------------------------- 16442 Summary of changes for this label: 09_20_01 16443 16444 ACPI CA Core Subsystem: 16445 16446 The AcpiEnableEvent and AcpiDisableEvent interfaces have been 16447 modified to allow individual GPE levels to be flagged as wake- 16448 enabled (i.e., these GPEs are to remain enabled when the platform 16449 sleeps.) 16450 16451 The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now 16452 support wake-enabled GPEs. This means that upon entering the 16453 sleep state, all GPEs that are not wake-enabled are disabled. 16454 When leaving the sleep state, these GPEs are reenabled. 16455 16456 A local double-precision divide/modulo module has been added to 16457 enhance portability to OS kernels where a 64-bit math library is 16458 not available. The new module is "utmath.c". 16459 16460 Several optimizations have been made to reduce the use of CPU 16461 stack. Originally over 2K, the maximum stack usage is now below 16462 2K at 1860 bytes (1.82k) 16463 16464 Fixed a problem with the AcpiGetFirmwareTable interface where the 16465 root table pointer was not mapped into a logical address properly. 16466 16467 Fixed a problem where a NULL pointer was being dereferenced in the 16468 interpreter code for the ASL Notify operator. 16469 16470 Fixed a problem where the use of the ASL Revision operator 16471 returned an error. This operator now returns the current version 16472 of the ACPI CA core subsystem. 16473 16474 Fixed a problem where objects passed as control method parameters 16475 to AcpiEvaluateObject were always deleted at method termination. 16476 However, these objects may end up being stored into the namespace 16477 by the called method. The object reference count mechanism was 16478 applied to these objects instead of a force delete. 16479 16480 Fixed a problem where static strings or buffers (contained in the 16481 AML code) that are declared as package elements within the ASL 16482 code could cause a fault because the interpreter would attempt to 16483 delete them. These objects are now marked with the "static 16484 object" flag to prevent any attempt to delete them. 16485 16486 Implemented an interpreter optimization to use operands directly 16487 from the state object instead of extracting the operands to local 16488 variables. This reduces stack use and code size, and improves 16489 performance. 16490 16491 The module exxface.c was eliminated as it was an unnecessary extra 16492 layer of code. 16493 16494 Current core subsystem library code sizes are shown below. These 16495 are the code and data sizes for the acpica.lib produced by the 16496 Microsoft Visual C++ 6.0 compiler, and these values do not include 16497 any ACPI driver or OSPM code. The debug version of the code 16498 includes the full debug trace mechanism -- leading to a much 16499 larger code and data size. Note that these values will vary 16500 depending on the efficiency of the compiler and the compiler 16501 options used during generation. 16502 16503 Non-Debug Version: 65K Code, 5K Data, 70K Total 16504 (Previously 69K) Debug Version: 138K Code, 58K Data, 196K 16505 Total (Previously 195K) 16506 16507 Linux: 16508 16509 Support for ACPI 2.0 64-bit integers has been added. All ACPI 16510 Integer objects are now 64 bits wide 16511 16512 All Acpi data types and structures are now in lower case. Only 16513 Acpi macros are upper case for differentiation. 16514 16515 Documentation: 16516 16517 Changes to the external interfaces as described above. 16518 16519 ---------------------------------------- 16520 Summary of changes for this label: 08_31_01 16521 16522 ACPI CA Core Subsystem: 16523 16524 A bug with interpreter implementation of the ASL Divide operator 16525 was found and fixed. The implicit function return value (not the 16526 explicit store operands) was returning the remainder instead of 16527 the quotient. This was a longstanding bug and it fixes several 16528 known outstanding issues on various platforms. 16529 16530 The ACPI_DEBUG_PRINT and function trace entry/exit macros have 16531 been further optimized for size. There are 700 invocations of the 16532 DEBUG_PRINT macro alone, so each optimization reduces the size of 16533 the debug version of the subsystem significantly. 16534 16535 A stack trace mechanism has been implemented. The maximum stack 16536 usage is about 2K on 32-bit platforms. The debugger command "stat 16537 stack" will display the current maximum stack usage. 16538 16539 All public symbols and global variables within the subsystem are 16540 now prefixed with the string "Acpi". This keeps all of the 16541 symbols grouped together in a kernel map, and avoids conflicts 16542 with other kernel subsystems. 16543 16544 Most of the internal fixed lookup tables have been moved into the 16545 code segment via the const operator. 16546 16547 Several enhancements have been made to the interpreter to both 16548 reduce the code size and improve performance. 16549 16550 Current core subsystem library code sizes are shown below. These 16551 are the code and data sizes for the acpica.lib produced by the 16552 Microsoft Visual C++ 6.0 compiler, and these values do not include 16553 any ACPI driver or OSPM code. The debug version of the code 16554 includes the full debug trace mechanism which contains over 700 16555 invocations of the DEBUG_PRINT macro, 500 function entry macro 16556 invocations, and over 900 function exit macro invocations -- 16557 leading to a much larger code and data size. Note that these 16558 values will vary depending on the efficiency of the compiler and 16559 the compiler options used during generation. 16560 16561 Non-Debug Version: 64K Code, 5K Data, 69K Total 16562 Debug Version: 137K Code, 58K Data, 195K Total 16563 16564 Linux: 16565 16566 Implemented wbinvd() macro, pending a kernel-wide definition. 16567 16568 Fixed /proc/acpi/event to handle poll() and short reads. 16569 16570 ASL Compiler, version X2026: 16571 16572 Fixed a problem introduced in the previous label where the AML 16573 16574 code emitted for package objects produced packages with zero 16575 length. 16576 16577 ---------------------------------------- 16578 Summary of changes for this label: 08_16_01 16579 16580 ACPI CA Core Subsystem: 16581 16582 The following ACPI 2.0 ASL operators have been implemented in the 16583 AML interpreter (These are already supported by the Intel ASL 16584 compiler): ToDecimalString, ToHexString, ToString, ToInteger, and 16585 ToBuffer. Support for 64-bit AML constants is implemented in the 16586 AML parser, debugger, and disassembler. 16587 16588 The internal memory tracking mechanism (leak detection code) has 16589 been upgraded to reduce the memory overhead (a separate tracking 16590 block is no longer allocated for each memory allocation), and now 16591 supports all of the internal object caches. 16592 16593 The data structures and code for the internal object caches have 16594 been coelesced and optimized so that there is a single cache and 16595 memory list data structure and a single group of functions that 16596 implement generic cache management. This has reduced the code 16597 size in both the debug and release versions of the subsystem. 16598 16599 The DEBUG_PRINT macro(s) have been optimized for size and replaced 16600 by ACPI_DEBUG_PRINT. The syntax for this macro is slightly 16601 different, because it generates a single call to an internal 16602 function. This results in a savings of about 90 bytes per 16603 invocation, resulting in an overall code and data savings of about 16604 16% in the debug version of the subsystem. 16605 16606 Linux: 16607 16608 Fixed C3 disk corruption problems and re-enabled C3 on supporting 16609 machines. 16610 16611 Integrated low-level sleep code by Patrick Mochel. 16612 16613 Further tweaked source code Linuxization. 16614 16615 Other minor fixes. 16616 16617 ASL Compiler: 16618 16619 Support for ACPI 2.0 variable length packages is fixed/completed. 16620 16621 Fixed a problem where the optional length parameter for the ACPI 16622 2.0 ToString operator. 16623 16624 Fixed multiple extraneous error messages when a syntax error is 16625 detected within the declaration line of a control method. 16626 16627 ---------------------------------------- 16628 Summary of changes for this label: 07_17_01 16629 16630 ACPI CA Core Subsystem: 16631 16632 Added a new interface named AcpiGetFirmwareTable to obtain any 16633 ACPI table via the ACPI signature. The interface can be called at 16634 any time during kernel initialization, even before the kernel 16635 virtual memory manager is initialized and paging is enabled. This 16636 allows kernel subsystems to obtain ACPI tables very early, even 16637 before the ACPI CA subsystem is initialized. 16638 16639 Fixed a problem where Fields defined with the AnyAcc attribute 16640 could be resolved to the incorrect address under the following 16641 conditions: 1) the field width is larger than 8 bits and 2) the 16642 parent operation region is not defined on a DWORD boundary. 16643 16644 Fixed a problem where the interpreter is not being locked during 16645 namespace initialization (during execution of the _INI control 16646 methods), causing an error when an attempt is made to release it 16647 later. 16648 16649 ACPI 2.0 support in the AML Interpreter has begun and will be 16650 ongoing throughout the rest of this year. In this label, The Mod 16651 operator is implemented. 16652 16653 Added a new data type to contain full PCI addresses named 16654 ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device, 16655 and Function values. 16656 16657 Linux: 16658 16659 Enhanced the Linux version of the source code to change most 16660 capitalized ACPI type names to lowercase. For example, all 16661 instances of ACPI_STATUS are changed to acpi_status. This will 16662 result in a large diff, but the change is strictly cosmetic and 16663 aligns the CA code closer to the Linux coding standard. 16664 16665 OSL Interfaces: 16666 16667 The interfaces to the PCI configuration space have been changed to 16668 add the PCI Segment number and to split the single 32-bit combined 16669 DeviceFunction field into two 16-bit fields. This was 16670 accomplished by moving the four values that define an address in 16671 PCI configuration space (segment, bus, device, and function) to 16672 the new ACPI_PCI_ID structure. 16673 16674 The changes to the PCI configuration space interfaces led to a 16675 reexamination of the complete set of address space access 16676 interfaces for PCI, I/O, and Memory. The previously existing 18 16677 interfaces have proven difficult to maintain (any small change 16678 must be propagated across at least 6 interfaces) and do not easily 16679 allow for future expansion to 64 bits if necessary. Also, on some 16680 systems, it would not be appropriate to demultiplex the access 16681 width (8, 16, 32,or 64) before calling the OSL if the 16682 corresponding native OS interfaces contain a similar access width 16683 parameter. For these reasons, the 18 address space interfaces 16684 have been replaced by these 6 new ones: 16685 16686 AcpiOsReadPciConfiguration 16687 AcpiOsWritePciConfiguration 16688 AcpiOsReadMemory 16689 AcpiOsWriteMemory 16690 AcpiOsReadPort 16691 AcpiOsWritePort 16692 16693 Added a new interface named AcpiOsGetRootPointer to allow the OSL 16694 to perform the platform and/or OS-specific actions necessary to 16695 obtain the ACPI RSDP table pointer. On IA-32 platforms, this 16696 interface will simply call down to the CA core to perform the low- 16697 memory search for the table. On IA-64, the RSDP is obtained from 16698 EFI. Migrating this interface to the OSL allows the CA core to 16699 16700 remain OS and platform independent. 16701 16702 Added a new interface named AcpiOsSignal to provide a generic 16703 "function code and pointer" interface for various miscellaneous 16704 signals and notifications that must be made to the host OS. The 16705 first such signals are intended to support the ASL Fatal and 16706 Breakpoint operators. In the latter case, the AcpiOsBreakpoint 16707 interface has been obsoleted. 16708 16709 The definition of the AcpiFormatException interface has been 16710 changed to simplify its use. The caller no longer must supply a 16711 buffer to the call; A pointer to a const string is now returned 16712 directly. This allows the call to be easily used in printf 16713 statements, etc. since the caller does not have to manage a local 16714 buffer. 16715 16716 16717 ASL Compiler, Version X2025: 16718 16719 The ACPI 2.0 Switch/Case/Default operators have been implemented 16720 and are fully functional. They will work with all ACPI 1.0 16721 interpreters, since the operators are simply translated to If/Else 16722 pairs. 16723 16724 The ACPI 2.0 ElseIf operator is implemented and will also work 16725 with 1.0 interpreters, for the same reason. 16726 16727 Implemented support for ACPI 2.0 variable-length packages. These 16728 packages have a separate opcode, and their size is determined by 16729 the interpreter at run-time. 16730 16731 Documentation The ACPI CA Programmer Reference has been updated to 16732 reflect the new interfaces and changes to existing interfaces. 16733 16734 ------------------------------------------ 16735 Summary of changes for this label: 06_15_01 16736 16737 ACPI CA Core Subsystem: 16738 16739 Fixed a problem where a DWORD-accessed field within a Buffer 16740 object would get its byte address inadvertently rounded down to 16741 the nearest DWORD. Buffers are always Byte-accessible. 16742 16743 ASL Compiler, version X2024: 16744 16745 Fixed a problem where the Switch() operator would either fault or 16746 hang the compiler. Note however, that the AML code for this ACPI 16747 2.0 operator is not yet implemented. 16748 16749 Compiler uses the new AcpiOsGetTimer interface to obtain compile 16750 timings. 16751 16752 Implementation of the CreateField operator automatically converts 16753 a reference to a named field within a resource descriptor from a 16754 byte offset to a bit offset if required. 16755 16756 Added some missing named fields from the resource descriptor 16757 support. These are the names that are automatically created by the 16758 compiler to reference fields within a descriptor. They are only 16759 valid at compile time and are not passed through to the AML 16760 interpreter. 16761 16762 Resource descriptor named fields are now typed as Integers and 16763 subject to compile-time typechecking when used in expressions. 16764 16765 ------------------------------------------ 16766 Summary of changes for this label: 05_18_01 16767 16768 ACPI CA Core Subsystem: 16769 16770 Fixed a couple of problems in the Field support code where bits 16771 from adjacent fields could be returned along with the proper field 16772 bits. Restructured the field support code to improve performance, 16773 readability and maintainability. 16774 16775 New DEBUG_PRINTP macro automatically inserts the procedure name 16776 into the output, saving hundreds of copies of procedure name 16777 strings within the source, shrinking the memory footprint of the 16778 debug version of the core subsystem. 16779 16780 Source Code Structure: 16781 16782 The source code directory tree was restructured to reflect the 16783 current organization of the component architecture. Some files 16784 and directories have been moved and/or renamed. 16785 16786 Linux: 16787 16788 Fixed leaking kacpidpc processes. 16789 16790 Fixed queueing event data even when /proc/acpi/event is not 16791 opened. 16792 16793 ASL Compiler, version X2020: 16794 16795 Memory allocation performance enhancement - over 24X compile time 16796 improvement on large ASL files. Parse nodes and namestring 16797 buffers are now allocated from a large internal compiler buffer. 16798 16799 The temporary .SRC file is deleted unless the "-s" option is 16800 specified 16801 16802 The "-d" debug output option now sends all output to the .DBG file 16803 instead of the console. 16804 16805 "External" second parameter is now optional 16806 16807 "ElseIf" syntax now properly allows the predicate 16808 16809 Last operand to "Load" now recognized as a Target operand 16810 16811 Debug object can now be used anywhere as a normal object. 16812 16813 ResourceTemplate now returns an object of type BUFFER 16814 16815 EISAID now returns an object of type INTEGER 16816 16817 "Index" now works with a STRING operand 16818 16819 "LoadTable" now accepts optional parameters 16820 16821 "ToString" length parameter is now optional 16822 16823 "Interrupt (ResourceType," parse error fixed. 16824 16825 "Register" with a user-defined region space parse error fixed 16826 16827 Escaped backslash at the end of a string ("\\") scan/parse error 16828 fixed 16829 16830 "Revision" is now an object of type INTEGER. 16831 16832 16833 16834 ------------------------------------------ 16835 Summary of changes for this label: 05_02_01 16836 16837 Linux: 16838 16839 /proc/acpi/event now blocks properly. 16840 16841 Removed /proc/sys/acpi. You can still dump your DSDT from 16842 /proc/acpi/dsdt. 16843 16844 ACPI CA Core Subsystem: 16845 16846 Fixed a problem introduced in the previous label where some of the 16847 "small" resource descriptor types were not recognized. 16848 16849 Improved error messages for the case where an ASL Field is outside 16850 the range of the parent operation region. 16851 16852 ASL Compiler, version X2018: 16853 16854 16855 Added error detection for ASL Fields that extend beyond the length 16856 of the parent operation region (only if the length of the region 16857 is known at compile time.) This includes fields that have a 16858 minimum access width that is smaller than the parent region, and 16859 individual field units that are partially or entirely beyond the 16860 extent of the parent. 16861 16862 16863 16864 ------------------------------------------ 16865 Summary of changes for this label: 04_27_01 16866 16867 ACPI CA Core Subsystem: 16868 16869 Fixed a problem where the namespace mutex could be released at the 16870 wrong time during execution of AcpiRemoveAddressSpaceHandler. 16871 16872 Added optional thread ID output for debug traces, to simplify 16873 debugging of multiple threads. Added context switch notification 16874 when the debug code realizes that a different thread is now 16875 executing ACPI code. 16876 16877 Some additional external data types have been prefixed with the 16878 string "ACPI_" for consistency. This may effect existing code. 16879 The data types affected are the external callback typedefs - e.g., 16880 16881 WALK_CALLBACK becomes ACPI_WALK_CALLBACK. 16882 16883 Linux: 16884 16885 Fixed an issue with the OSL semaphore implementation where a 16886 thread was waking up with an error from receiving a SIGCHLD 16887 signal. 16888 16889 Linux version of ACPI CA now uses the system C library for string 16890 manipulation routines instead of a local implementation. 16891 16892 Cleaned up comments and removed TBDs. 16893 16894 ASL Compiler, version X2017: 16895 16896 Enhanced error detection and reporting for all file I/O 16897 operations. 16898 16899 Documentation: 16900 16901 Programmer Reference updated to version 1.06. 16902 16903 16904 16905 ------------------------------------------ 16906 Summary of changes for this label: 04_13_01 16907 16908 ACPI CA Core Subsystem: 16909 16910 Restructured support for BufferFields and RegionFields. 16911 BankFields support is now fully operational. All known 32-bit 16912 limitations on field sizes have been removed. Both BufferFields 16913 and (Operation) RegionFields are now supported by the same field 16914 management code. 16915 16916 Resource support now supports QWORD address and IO resources. The 16917 16/32/64 bit address structures and the Extended IRQ structure 16918 have been changed to properly handle Source Resource strings. 16919 16920 A ThreadId of -1 is now used to indicate a "mutex not acquired" 16921 condition internally and must never be returned by AcpiOsThreadId. 16922 This reserved value was changed from 0 since Unix systems allow a 16923 thread ID of 0. 16924 16925 Linux: 16926 16927 Driver code reorganized to enhance portability 16928 16929 Added a kernel configuration option to control ACPI_DEBUG 16930 16931 Fixed the EC driver to honor _GLK. 16932 16933 ASL Compiler, version X2016: 16934 16935 Fixed support for the "FixedHw" keyword. Previously, the FixedHw 16936 address space was set to 0, not 0x7f as it should be. 16937 16938 ------------------------------------------ 16939 Summary of changes for this label: 03_13_01 16940 16941 ACPI CA Core Subsystem: 16942 16943 During ACPI initialization, the _SB_._INI method is now run if 16944 present. 16945 16946 Notify handler fix - notifies are deferred until the parent method 16947 completes execution. This fixes the "mutex already acquired" 16948 issue seen occasionally. 16949 16950 Part of the "implicit conversion" rules in ACPI 2.0 have been 16951 found to cause compatibility problems with existing ASL/AML. The 16952 convert "result-to-target-type" implementation has been removed 16953 for stores to method Args and Locals. Source operand conversion 16954 is still fully implemented. Possible changes to ACPI 2.0 16955 specification pending. 16956 16957 Fix to AcpiRsCalculatePciRoutingTableLength to return correct 16958 length. 16959 16960 Fix for compiler warnings for 64-bit compiles. 16961 16962 Linux: 16963 16964 /proc output aligned for easier parsing. 16965 16966 Release-version compile problem fixed. 16967 16968 New kernel configuration options documented in Configure.help. 16969 16970 IBM 600E - Fixed Sleep button may generate "Invalid <NULL> 16971 context" message. 16972 16973 OSPM: 16974 16975 Power resource driver integrated with bus manager. 16976 16977 Fixed kernel fault during active cooling for thermal zones. 16978 16979 Source Code: 16980 16981 The source code tree has been restructured. 16982 16983 16984 16985 ------------------------------------------ 16986 Summary of changes for this label: 03_02_01 16987 16988 Linux OS Services Layer (OSL): 16989 16990 Major revision of all Linux-specific code. 16991 16992 Modularized all ACPI-specific drivers. 16993 16994 Added new thermal zone and power resource drivers. 16995 16996 Revamped /proc interface (new functionality is under /proc/acpi). 16997 16998 New kernel configuration options. 16999 17000 Linux known issues: 17001 17002 New kernel configuration options not documented in Configure.help 17003 yet. 17004 17005 17006 Module dependencies not currently implemented. If used, they 17007 should be loaded in this order: busmgr, power, ec, system, 17008 processor, battery, ac_adapter, button, thermal. 17009 17010 Modules will not load if CONFIG_MODVERSION is set. 17011 17012 IBM 600E - entering S5 may reboot instead of shutting down. 17013 17014 IBM 600E - Sleep button may generate "Invalid <NULL> context" 17015 message. 17016 17017 Some systems may fail with "execution mutex already acquired" 17018 message. 17019 17020 ACPI CA Core Subsystem: 17021 17022 Added a new OSL Interface, AcpiOsGetThreadId. This was required 17023 for the deadlock detection code. Defined to return a non-zero, 32- 17024 bit thread ID for the currently executing thread. May be a non- 17025 zero constant integer on single-thread systems. 17026 17027 Implemented deadlock detection for internal subsystem mutexes. We 17028 may add conditional compilation for this code (debug only) later. 17029 17030 ASL/AML Mutex object semantics are now fully supported. This 17031 includes multiple acquires/releases by owner and support for the 17032 17033 Mutex SyncLevel parameter. 17034 17035 A new "Force Release" mechanism automatically frees all ASL 17036 Mutexes that have been acquired but not released when a thread 17037 exits the interpreter. This forces conformance to the ACPI spec 17038 ("All mutexes must be released when an invocation exits") and 17039 prevents deadlocked ASL threads. This mechanism can be expanded 17040 (later) to monitor other resource acquisitions if OEM ASL code 17041 continues to misbehave (which it will). 17042 17043 Several new ACPI exception codes have been added for the Mutex 17044 support. 17045 17046 Recursive method calls are now allowed and supported (the ACPI 17047 spec does in fact allow recursive method calls.) The number of 17048 recursive calls is subject to the restrictions imposed by the 17049 SERIALIZED method keyword and SyncLevel (ACPI 2.0) method 17050 parameter. 17051 17052 Implemented support for the SyncLevel parameter for control 17053 methods (ACPI 2.0 feature) 17054 17055 Fixed a deadlock problem when multiple threads attempted to use 17056 the interpreter. 17057 17058 Fixed a problem where the string length of a String package 17059 element was not always set in a package returned from 17060 AcpiEvaluateObject. 17061 17062 Fixed a problem where the length of a String package element was 17063 not always included in the length of the overall package returned 17064 from AcpiEvaluateObject. 17065 17066 Added external interfaces (Acpi*) to the ACPI debug memory 17067 manager. This manager keeps a list of all outstanding 17068 allocations, and can therefore detect memory leaks and attempts to 17069 free memory blocks more than once. Useful for code such as the 17070 power manager, etc. May not be appropriate for device drivers. 17071 Performance with the debug code enabled is slow. 17072 17073 The ACPI Global Lock is now an optional hardware element. 17074 17075 ASL Compiler Version X2015: 17076 17077 Integrated changes to allow the compiler to be generated on 17078 multiple platforms. 17079 17080 Linux makefile added to generate the compiler on Linux 17081 17082 Source Code: 17083 17084 All platform-specific headers have been moved to their own 17085 subdirectory, Include/Platform. 17086 17087 New source file added, Interpreter/ammutex.c 17088 17089 New header file, Include/acstruct.h 17090 17091 Documentation: 17092 17093 The programmer reference has been updated for the following new 17094 interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree 17095 17096 ------------------------------------------ 17097 Summary of changes for this label: 02_08_01 17098 17099 Core ACPI CA Subsystem: Fixed a problem where an error was 17100 incorrectly returned if the return resource buffer was larger than 17101 the actual data (in the resource interfaces). 17102 17103 References to named objects within packages are resolved to the 17104 17105 full pathname string before packages are returned directly (via 17106 the AcpiEvaluateObject interface) or indirectly via the resource 17107 interfaces. 17108 17109 Linux OS Services Layer (OSL): 17110 17111 Improved /proc battery interface. 17112 17113 17114 Added C-state debugging output and other miscellaneous fixes. 17115 17116 ASL Compiler Version X2014: 17117 17118 All defined method arguments can now be used as local variables, 17119 including the ones that are not actually passed in as parameters. 17120 The compiler tracks initialization of the arguments and issues an 17121 exception if they are used without prior assignment (just like 17122 locals). 17123 17124 The -o option now specifies a filename prefix that is used for all 17125 output files, including the AML output file. Otherwise, the 17126 default behavior is as follows: 1) the AML goes to the file 17127 specified in the DSDT. 2) all other output files use the input 17128 source filename as the base. 17129 17130 ------------------------------------------ 17131 Summary of changes for this label: 01_25_01 17132 17133 Core ACPI CA Subsystem: Restructured the implementation of object 17134 store support within the interpreter. This includes support for 17135 the Store operator as well as any ASL operators that include a 17136 target operand. 17137 17138 Partially implemented support for Implicit Result-to-Target 17139 conversion. This is when a result object is converted on the fly 17140 to the type of an existing target object. Completion of this 17141 support is pending further analysis of the ACPI specification 17142 concerning this matter. 17143 17144 CPU-specific code has been removed from the subsystem (hardware 17145 directory). 17146 17147 New Power Management Timer functions added 17148 17149 Linux OS Services Layer (OSL): Moved system state transition code 17150 to the core, fixed it, and modified Linux OSL accordingly. 17151 17152 Fixed C2 and C3 latency calculations. 17153 17154 17155 We no longer use the compilation date for the version message on 17156 initialization, but retrieve the version from AcpiGetSystemInfo(). 17157 17158 Incorporated for fix Sony VAIO machines. 17159 17160 Documentation: The Programmer Reference has been updated and 17161 reformatted. 17162 17163 17164 ASL Compiler: Version X2013: Fixed a problem where the line 17165 numbering and error reporting could get out of sync in the 17166 presence of multiple include files. 17167 17168 ------------------------------------------ 17169 Summary of changes for this label: 01_15_01 17170 17171 Core ACPI CA Subsystem: 17172 17173 Implemented support for type conversions in the execution of the 17174 ASL Concatenate operator (The second operand is converted to 17175 match the type of the first operand before concatenation.) 17176 17177 Support for implicit source operand conversion is partially 17178 implemented. The ASL source operand types Integer, Buffer, and 17179 String are freely interchangeable for most ASL operators and are 17180 converted by the interpreter on the fly as required. Implicit 17181 Target operand conversion (where the result is converted to the 17182 target type before storing) is not yet implemented. 17183 17184 Support for 32-bit and 64-bit BCD integers is implemented. 17185 17186 Problem fixed where a field read on an aligned field could cause a 17187 read past the end of the field. 17188 17189 New exception, AE_AML_NO_RETURN_VALUE, is returned when a method 17190 does not return a value, but the caller expects one. (The ASL 17191 compiler flags this as a warning.) 17192 17193 ASL Compiler: 17194 17195 Version X2011: 17196 1. Static typechecking of all operands is implemented. This 17197 prevents the use of invalid objects (such as using a Package where 17198 an Integer is required) at compile time instead of at interpreter 17199 run-time. 17200 2. The ASL source line is printed with ALL errors and warnings. 17201 3. Bug fix for source EOF without final linefeed. 17202 4. Debug option is split into a parse trace and a namespace trace. 17203 5. Namespace output option (-n) includes initial values for 17204 integers and strings. 17205 6. Parse-only option added for quick syntax checking. 17206 7. Compiler checks for duplicate ACPI name declarations 17207 17208 Version X2012: 17209 1. Relaxed typechecking to allow interchangeability between 17210 strings, integers, and buffers. These types are now converted by 17211 the interpreter at runtime. 17212 2. Compiler reports time taken by each internal subsystem in the 17213 debug output file. 17214 17215 17216 ------------------------------------------ 17217 Summary of changes for this label: 12_14_00 17218 17219 ASL Compiler: 17220 17221 This is the first official release of the compiler. Since the 17222 compiler requires elements of the Core Subsystem, this label 17223 synchronizes everything. 17224 17225 ------------------------------------------ 17226 Summary of changes for this label: 12_08_00 17227 17228 17229 Fixed a problem where named references within the ASL definition 17230 of both OperationRegions and CreateXXXFields did not work 17231 properly. The symptom was an AE_AML_OPERAND_TYPE during 17232 initialization of the region/field. This is similar (but not 17233 related internally) to the problem that was fixed in the last 17234 label. 17235 17236 Implemented both 32-bit and 64-bit support for the BCD ASL 17237 functions ToBCD and FromBCD. 17238 17239 Updated all legal headers to include "2000" in the copyright 17240 years. 17241 17242 ------------------------------------------ 17243 Summary of changes for this label: 12_01_00 17244 17245 Fixed a problem where method invocations within the ASL definition 17246 of both OperationRegions and CreateXXXFields did not work 17247 properly. The symptom was an AE_AML_OPERAND_TYPE during 17248 initialization of the region/field: 17249 17250 nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments 17251 [DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s) 17252 (0x3005) 17253 17254 Fixed a problem where operators with more than one nested 17255 subexpression would fail. The symptoms were varied, by mostly 17256 AE_AML_OPERAND_TYPE errors. This was actually a rather serious 17257 problem that has gone unnoticed until now. 17258 17259 Subtract (Add (1,2), Multiply (3,4)) 17260 17261 Fixed a problem where AcpiGetHandle didn't quite get fixed in the 17262 previous build (The prefix part of a relative path was handled 17263 incorrectly). 17264 17265 Fixed a problem where Operation Region initialization failed if 17266 the operation region name was a "namepath" instead of a simple 17267 "nameseg". Symptom was an AE_NO_OPERAND error. 17268 17269 Fixed a problem where an assignment to a local variable via the 17270 indirect RefOf mechanism only worked for the first such 17271 assignment. Subsequent assignments were ignored. 17272 17273 ------------------------------------------ 17274 Summary of changes for this label: 11_15_00 17275 17276 ACPI 2.0 table support with backwards support for ACPI 1.0 and the 17277 0.71 extensions. Note: although we can read ACPI 2.0 BIOS tables, 17278 the AML interpreter does NOT have support for the new 2.0 ASL 17279 grammar terms at this time. 17280 17281 All ACPI hardware access is via the GAS structures in the ACPI 2.0 17282 FADT. 17283 17284 All physical memory addresses across all platforms are now 64 bits 17285 wide. Logical address width remains dependent on the platform 17286 (i.e., "void *"). 17287 17288 AcpiOsMapMemory interface changed to a 64-bit physical address. 17289 17290 The AML interpreter integer size is now 64 bits, as per the ACPI 17291 2.0 specification. 17292 17293 For backwards compatibility with ACPI 1.0, ACPI tables with a 17294 revision number less than 2 use 32-bit integers only. 17295 17296 Fixed a problem where the evaluation of OpRegion operands did not 17297 always resolve them to numbers properly. 17298 17299 ------------------------------------------ 17300 Summary of changes for this label: 10_20_00 17301 17302 Fix for CBN_._STA issue. This fix will allow correct access to 17303 CBN_ OpRegions when the _STA returns 0x8. 17304 17305 Support to convert ACPI constants (Ones, Zeros, One) to actual 17306 values before a package object is returned 17307 17308 Fix for method call as predicate to if/while construct causing 17309 incorrect if/while behavior 17310 17311 Fix for Else block package lengths sometimes calculated wrong (if 17312 block > 63 bytes) 17313 17314 Fix for Processor object length field, was always zero 17315 17316 Table load abort if FACP sanity check fails 17317 17318 Fix for problem with Scope(name) if name already exists 17319 17320 Warning emitted if a named object referenced cannot be found 17321 (resolved) during method execution. 17322 17323 17324 17325 17326 17327 ------------------------------------------ 17328 Summary of changes for this label: 9_29_00 17329 17330 New table initialization interfaces: AcpiInitializeSubsystem no 17331 longer has any parameters AcpiFindRootPointer - Find the RSDP (if 17332 necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP- 17333 >RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by 17334 AcpiLoadTables 17335 17336 Note: These interface changes require changes to all existing OSDs 17337 17338 The PCI_Config default address space handler is always installed 17339 at the root namespace object. 17340 17341 ------------------------------------------- 17342 Summary of changes for this label: 09_15_00 17343 17344 The new initialization architecture is implemented. New 17345 interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize) 17346 AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace 17347 17348 (Namespace is automatically loaded when a table is loaded) 17349 17350 The ACPI_OPERAND_OBJECT has been optimized to shrink its size from 17351 52 bytes to 32 bytes. There is usually one of these for every 17352 namespace object, so the memory savings is significant. 17353 17354 Implemented just-in-time evaluation of the CreateField operators. 17355 17356 Bug fixes for IA-64 support have been integrated. 17357 17358 Additional code review comments have been implemented 17359 17360 The so-called "third pass parse" has been replaced by a final walk 17361 through the namespace to initialize all operation regions (address 17362 spaces) and fields that have not yet been initialized during the 17363 execution of the various _INI and REG methods. 17364 17365 New file - namespace/nsinit.c 17366 17367 ------------------------------------------- 17368 Summary of changes for this label: 09_01_00 17369 17370 Namespace manager data structures have been reworked to change the 17371 primary object from a table to a single object. This has 17372 resulted in dynamic memory savings of 3X within the namespace and 17373 2X overall in the ACPI CA subsystem. 17374 17375 Fixed problem where the call to AcpiEvFindPciRootBuses was 17376 inadvertently left commented out. 17377 17378 Reduced the warning count when generating the source with the GCC 17379 compiler. 17380 17381 Revision numbers added to each module header showing the 17382 SourceSafe version of the file. Please refer to this version 17383 number when giving us feedback or comments on individual modules. 17384 17385 The main object types within the subsystem have been renamed to 17386 clarify their purpose: 17387 17388 ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT 17389 ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT 17390 ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE 17391 17392 NOTE: no changes to the initialization sequence are included in 17393 this label. 17394 17395 ------------------------------------------- 17396 Summary of changes for this label: 08_23_00 17397 17398 Fixed problem where TerminateControlMethod was being called 17399 multiple times per method 17400 17401 Fixed debugger problem where single stepping caused a semaphore to 17402 be oversignalled 17403 17404 Improved performance through additional parse object caching - 17405 added ACPI_EXTENDED_OP type 17406 17407 ------------------------------------------- 17408 Summary of changes for this label: 08_10_00 17409 17410 Parser/Interpreter integration: Eliminated the creation of 17411 complete parse trees for ACPI tables and control methods. 17412 Instead, parse subtrees are created and then deleted as soon as 17413 they are processed (Either entered into the namespace or executed 17414 by the interpreter). This reduces the use of dynamic kernel 17415 memory significantly. (about 10X) 17416 17417 Exception codes broken into classes and renumbered. Be sure to 17418 recompile all code that includes acexcep.h. Hopefully we won't 17419 have to renumber the codes again now that they are split into 17420 classes (environment, programmer, AML code, ACPI table, and 17421 internal). 17422 17423 Fixed some additional alignment issues in the Resource Manager 17424 subcomponent 17425 17426 Implemented semaphore tracking in the AcpiExec utility, and fixed 17427 several places where mutexes/semaphores were being unlocked 17428 without a corresponding lock operation. There are no known 17429 semaphore or mutex "leaks" at this time. 17430 17431 Fixed the case where an ASL Return operator is used to return an 17432 unnamed package. 17433 17434 ------------------------------------------- 17435 Summary of changes for this label: 07_28_00 17436 17437 Fixed a problem with the way addresses were calculated in 17438 AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem 17439 manifested itself when a Field was created with WordAccess or 17440 DwordAccess, but the field unit defined within the Field was less 17441 17442 than a Word or Dword. 17443 17444 Fixed a problem in AmlDumpOperands() module's loop to pull 17445 operands off of the operand stack to display information. The 17446 problem manifested itself as a TLB error on 64-bit systems when 17447 accessing an operand stack with two or more operands. 17448 17449 Fixed a problem with the PCI configuration space handlers where 17450 context was getting confused between accesses. This required a 17451 change to the generic address space handler and address space 17452 setup definitions. Handlers now get both a global handler context 17453 (this is the one passed in by the user when executing 17454 AcpiInstallAddressSpaceHandler() and a specific region context 17455 that is unique to each region (For example, the _ADR, _SEG and 17456 _BBN values associated with a specific region). The generic 17457 function definitions have changed to the following: 17458 17459 typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function, 17460 UINT32 Address, UINT32 BitWidth, UINT32 *Value, void 17461 *HandlerContext, // This used to be void *Context void 17462 *RegionContext); // This is an additional parameter 17463 17464 typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE 17465 RegionHandle, UINT32 Function, void *HandlerContext, void 17466 **RegionContext); // This used to be **ReturnContext 17467 17468 ------------------------------------------- 17469 Summary of changes for this label: 07_21_00 17470 17471 Major file consolidation and rename. All files within the 17472 interpreter have been renamed as well as most header files. This 17473 was done to prevent collisions with existing files in the host 17474 OSs -- filenames such as "config.h" and "global.h" seem to be 17475 quite common. The VC project files have been updated. All 17476 makefiles will require modification. 17477 17478 The parser/interpreter integration continues in Phase 5 with the 17479 implementation of a complete 2-pass parse (the AML is parsed 17480 twice) for each table; This avoids the construction of a huge 17481 parse tree and therefore reduces the amount of dynamic memory 17482 required by the subsystem. Greater use of the parse object cache 17483 means that performance is unaffected. 17484 17485 Many comments from the two code reviews have been rolled in. 17486 17487 The 64-bit alignment support is complete. 17488 17489 ------------------------------------------- 17490 Summary of changes for this label: 06_30_00 17491 17492 With a nod and a tip of the hat to the technology of yesteryear, 17493 we've added support in the source code for 80 column output 17494 devices. The code is now mostly constrained to 80 columns or 17495 less to support environments and editors that 1) cannot display 17496 or print more than 80 characters on a single line, and 2) cannot 17497 disable line wrapping. 17498 17499 A major restructuring of the namespace data structure has been 17500 completed. The result is 1) cleaner and more 17501 understandable/maintainable code, and 2) a significant reduction 17502 in the dynamic memory requirement for each named ACPI object 17503 (almost half). 17504 17505 ------------------------------------------- 17506 Summary of changes for this label: 06_23_00 17507 17508 Linux support has been added. In order to obtain approval to get 17509 the ACPI CA subsystem into the Linux kernel, we've had to make 17510 quite a few changes to the base subsystem that will affect all 17511 users (all the changes are generic and OS- independent). The 17512 effects of these global changes have been somewhat far reaching. 17513 Files have been merged and/or renamed and interfaces have been 17514 renamed. The major changes are described below. 17515 17516 Osd* interfaces renamed to AcpiOs* to eliminate namespace 17517 pollution/confusion within our target kernels. All OSD 17518 interfaces must be modified to match the new naming convention. 17519 17520 Files merged across the subsystem. A number of the smaller source 17521 and header files have been merged to reduce the file count and 17522 increase the density of the existing files. There are too many 17523 to list here. In general, makefiles that call out individual 17524 files will require rebuilding. 17525 17526 Interpreter files renamed. All interpreter files now have the 17527 prefix am* instead of ie* and is*. 17528 17529 Header files renamed: The acapi.h file is now acpixf.h. The 17530 acpiosd.h file is now acpiosxf.h. We are removing references to 17531 the acronym "API" since it is somewhat windowsy. The new name is 17532 "external interface" or xface or xf in the filenames.j 17533 17534 17535 All manifest constants have been forced to upper case (some were 17536 mixed case.) Also, the string "ACPI_" has been prepended to many 17537 (not all) of the constants, typedefs, and structs. 17538 17539 The globals "DebugLevel" and "DebugLayer" have been renamed 17540 "AcpiDbgLevel" and "AcpiDbgLayer" respectively. 17541 17542 All other globals within the subsystem are now prefixed with 17543 "AcpiGbl_" Internal procedures within the subsystem are now 17544 prefixed with "Acpi" (with only a few exceptions). The original 17545 two-letter abbreviation for the subcomponent remains after "Acpi" 17546 - for example, CmCallocate became AcpiCmCallocate. 17547 17548 Added a source code translation/conversion utility. Used to 17549 generate the Linux source code, it can be modified to generate 17550 other types of source as well. Can also be used to cleanup 17551 existing source by removing extraneous spaces and blank lines. 17552 Found in tools/acpisrc/* 17553 17554 OsdUnMapMemory was renamed to OsdUnmapMemory and then 17555 AcpiOsUnmapMemory. (UnMap became Unmap). 17556 17557 A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore. 17558 When set to one, this indicates that the caller wants to use the 17559 17560 semaphore as a mutex, not a counting semaphore. ACPI CA uses 17561 both types. However, implementers of this call may want to use 17562 different OS primitives depending on the type of semaphore 17563 requested. For example, some operating systems provide separate 17564 17565 "mutex" and "semaphore" interfaces - where the mutex interface is 17566 much faster because it doesn't have all the overhead of a full 17567 semaphore implementation. 17568 17569 Fixed a deadlock problem where a method that accesses the PCI 17570 address space can block forever if it is the first access to the 17571 space. 17572 17573 ------------------------------------------- 17574 Summary of changes for this label: 06_02_00 17575 17576 Support for environments that cannot handle unaligned data 17577 accesses (e.g. firmware and OS environments devoid of alignment 17578 handler technology namely SAL/EFI and the IA-64 Linux kernel) has 17579 been added (via configurable macros) in these three areas: - 17580 Transfer of data from the raw AML byte stream is done via byte 17581 moves instead of word/dword/qword moves. - External objects are 17582 aligned within the user buffer, including package elements (sub- 17583 objects). - Conversion of name strings to UINT32 Acpi Names is now 17584 done byte-wise. 17585 17586 The Store operator was modified to mimic Microsoft's 17587 implementation when storing to a Buffer Field. 17588 17589 Added a check of the BM_STS bit before entering C3. 17590 17591 The methods subdirectory has been obsoleted and removed. A new 17592 file, cmeval.c subsumes the functionality. 17593 17594 A 16-bit (DOS) version of AcpiExec has been developed. The 17595 makefile is under the acpiexec directory. 17596
Indexes created Wed Oct 01 19:09:53 GMT 2025