changes.txt revision 1.1.1.14
1 ---------------------------------------- 2 31 August 2017. Summary of changes for version 20170831: 3 4 5 1) ACPICA kernel-resident subsystem: 6 7 Implemented internal support for full 64-bit addresses that appear in all 8 Generic Address Structure (GAS) structures. Previously, only the lower 32 9 bits were used. Affects the use of GAS structures in the FADT and other 10 tables, as well as the GAS structures passed to the AcpiRead and 11 AcpiWrite public external interfaces that are used by drivers. Lv Zheng. 12 13 Added header support for the PDTT ACPI table (Processor Debug Trigger 14 Table). Full support in the iASL Data Table Compiler and disassembler is 15 forthcoming. 16 17 18 2) iASL Compiler/Disassembler and Tools: 19 20 iASL/Disassembler: Fixed a problem with the PPTT ACPI table (Processor 21 Properties Topology Table) where a flag bit was specified in the wrong 22 bit position ("Line Size Valid", bit 6). 23 24 iASL: Implemented support for Octal integer constants as defined by the 25 ASL language grammar, per the ACPI specification. Any integer constant 26 that starts with a zero is an octal constant. For example, 27 Store (037777, Local0) /* Octal constant */ 28 Store (0x3FFF, Local0) /* Hex equivalent */ 29 Store (16383, Local0) /* Decimal equivalent */ 30 31 iASL: Improved overflow detection for 64-bit string conversions during 32 compilation of integer constants. "Overflow" in this case means a string 33 that represents an integer that is too large to fit into a 64-bit value. 34 Any 64-bit constants within a 32-bit DSDT or SSDT are still truncated to 35 the low-order 32 bits with a warning, as previously implemented. Several 36 new exceptions are defined that indicate a 64-bit overflow, as well as 37 the base (radix) that was used during the attempted conversion. Examples: 38 Local0 = 0xAAAABBBBCCCCDDDDEEEEFFFF // AE_HEX_OVERFLOW 39 Local0 = 01111222233334444555566667777 // AE_OCTAL_OVERFLOW 40 Local0 = 11112222333344445555666677778888 // AE_DECIMAL_OVERFLOW 41 42 iASL: Added a warning for the case where a ResourceTemplate is declared 43 with no ResourceDescriptor entries (coded as "ResourceTemplate(){}"). In 44 this case, the resulting template is created with a single END_TAG 45 descriptor, which is essentially useless. 46 47 iASL: Expanded the -vw option (ignore specific warnings/remarks) to 48 include compilation error codes as well. 49 50 ---------------------------------------- 51 28 July 2017. Summary of changes for version 20170728: 52 53 54 1) ACPICA kernel-resident subsystem: 55 56 Fixed a regression seen with small resource descriptors that could cause 57 an inadvertent AE_AML_NO_RESOURCE_END_TAG exception. 58 59 AML interpreter: Implemented a new feature that allows forward references 60 from individual named references within package objects that are 61 contained within blocks of "module-level code". This provides 62 compatibility with other ACPI implementations and supports existing 63 firmware that depends on this feature. Example: 64 65 Name (ABCD, 1) 66 If (ABCD) /* An If() at module-level */ 67 { 68 Name (PKG1, Package() 69 { 70 INT1 /* Forward reference to object INT1 71 */ 72 }) 73 Name (INT1, 0x1234) 74 } 75 76 AML Interpreter: Fixed a problem with the Alias() operator where aliases 77 to some ASL objects were not handled properly. Objects affected are: 78 Mutex, Event, and OperationRegion. 79 80 AML Debugger: Enhanced to properly handle AML Alias objects. These 81 objects have one level of indirection which was not fully supported by 82 the debugger. 83 84 Table Manager: Added support to detect and ignore duplicate SSDTs within 85 the XSDT/RSDT. This error in the XSDT has been seen in the field. 86 87 EFI and EDK2 support: 88 Enabled /WX flag for MSVC builds 89 Added support for AcpiOsStall, AcpiOsSleep, and AcpiOsGetTimer 90 Added local support for 64-bit multiply and shift operations 91 Added support to compile acpidump.efi on Windows 92 Added OSL function stubs for interfaces not used under EFI 93 94 Added additional support for the _DMA predefined name. _DMA returns a 95 buffer containing a resource template. This change add support within the 96 resource manager (AcpiWalkResourceBuffer) to walk and parse this list of 97 resource descriptors. Lorenzo Pieralisi <lorenzo.pieralisi (a] arm.com> 98 99 100 2) iASL Compiler/Disassembler and Tools: 101 102 iASL: Fixed a problem where the internal input line buffer(s) could 103 overflow if there are very long lines in the input ASL source code file. 104 Implemented buffer management that automatically increases the size of 105 the buffers as necessary. 106 107 iASL: Added an option (-vx) to "expect" particular remarks, warnings and 108 errors. If the specified exception is not raised during compilation, the 109 compiler emits an error. This is intended to support the ASL test suite, 110 but may be useful in other contexts. 111 112 iASL: Implemented a new predefined macro, __METHOD__, which returns a 113 string containing the name of the current control method that is being 114 compiled. 115 116 iASL: Implemented debugger and table compiler support for the SDEI ACPI 117 table (Software Delegated Exception Interface). James Morse 118 <james.morse (a] arm.com> 119 120 Unix/Linux makefiles: Added an option to disable compile optimizations. 121 The disable occurs when the NOOPT flag is set to TRUE. 122 theracermaster (a] gmail.com 123 124 Acpidump: Added support for multiple DSDT and FACS tables. This can occur 125 when there are different tables for 32-bit versus 64-bit. 126 127 Enhanced error reporting for the ASL test suite (ASLTS) by removing 128 unnecessary/verbose text, and emit the actual line number where an error 129 has occurred. These changes are intended to improve the usefulness of the 130 test suite. 131 132 ---------------------------------------- 133 29 June 2017. Summary of changes for version 20170629: 134 135 136 1) ACPICA kernel-resident subsystem: 137 138 Tables: Implemented a deferred ACPI table verification. This is useful 139 for operating systems where the tables cannot be verified in the early 140 initialization stage due to early memory mapping limitations on some 141 architectures. Lv Zheng. 142 143 Tables: Removed the signature validation for dynamically loaded tables. 144 Provides compatibility with other ACPI implementations. Previously, only 145 SSDT tables were allowed, as per the ACPI specification. Now, any table 146 signature can be used via the Load() operator. Lv Zheng. 147 148 Tables: Fixed several mutex issues that could cause errors during table 149 acquisition. Lv Zheng. 150 151 Tables: Fixed a problem where an ACPI warning could be generated if a 152 null pointer was passed to the AcpiPutTable interface. Lv Zheng. 153 154 Tables: Added a mechanism to handle imbalances for the AcpiGetTable and 155 AcpiPutTable interfaces. This applies to the "late stage" table loading 156 when the use of AcpiPutTable is no longer required (since the system 157 memory manager is fully running and available). Lv Zheng. 158 159 Fixed/Reverted a regression during processing of resource descriptors 160 that contain only a single EndTag. Fixes an AE_AML_NO_RESOURCE_END_TAG 161 exception in this case. 162 163 Headers: IORT/SMMU support: Updated the SMMU models for Revision C of the 164 I/O Remapping specification. Robin Murphy <robin.murphy (a] arm.com> 165 166 Interpreter: Fixed a possible fault if an Alias operator with an invalid 167 or duplicate target is encountered during Alias creation in 168 AcpiExCreateAlias. Alex James <theracermaster (a] gmail.com> 169 170 Added an option to use designated initializers for function pointers. 171 Kees Cook <keescook (a] google.com> 172 173 174 2) iASL Compiler/Disassembler and Tools: 175 176 iASL: Allow compilation of External declarations with target pathnames 177 that refer to existing named objects within the table. Erik Schmauss. 178 179 iASL: Fixed a regression when compiling FieldUnits. Fixes an error if a 180 FieldUnit name also is declared via External in the same table. Erik 181 Schmauss. 182 183 iASL: Allow existing scope names within pathnames used in External 184 statements. For example: 185 External (ABCD.EFGH) // ABCD exists, but EFGH is truly external 186 Device (ABCD) 187 188 iASL: IORT ACPI table: Implemented changes required to decode the new 189 Proximity Domain for the SMMUv3 IORT. Disassembler and Data Table 190 compiler. Ganapatrao Kulkarni <ganapatrao.kulkarni (a] cavium.com> 191 192 Disassembler: Don't abort disassembly on errors from External() 193 statements. Erik Schmauss. 194 195 Disassembler: fixed a possible fault when one of the Create*Field 196 operators references a Resource Template. ACPICA Bugzilla 1396. 197 198 iASL: In the source code, resolved some naming inconsistences across the 199 parsing support. Fixes confusion between "Parse Op" and "Parse Node". 200 Adds a new file, aslparseop.c 201 202 ---------------------------------------- 203 31 May 2017. Summary of changes for version 20170531: 204 205 206 0) ACPI 6.2 support: 207 208 The ACPI specification version 6.2 has been released and is available at 209 http://uefi.org/specifications 210 211 This version of ACPICA fully supports the ACPI 6.2 specification. Changes 212 are summarized below. 213 214 New ACPI tables (Table Compiler/Disassembler/Templates): 215 HMAT (Heterogeneous Memory Attributes Table) 216 WSMT (Windows SMM Security Mitigation Table) 217 PPTT (Processor Properties Topology Table) 218 219 New subtables for existing ACPI tables: 220 HEST (New subtable, Arch-deferred machine check) 221 SRAT (New subtable, Arch-specific affinity structure) 222 PCCT (New subtables, Extended PCC subspaces (types 3 and 4)) 223 224 Simple updates for existing ACPI tables: 225 BGRT (two new flag bits) 226 HEST (New bit defined for several subtables, GHES_ASSIST) 227 228 New Resource Descriptors and Resource macros (Compiler/Disassembler): 229 PinConfig() 230 PinFunction() 231 PinGroup() 232 PinGroupConfig() 233 PinGroupFunction() 234 New type for hardware error notification (section 18.3.2.9) 235 236 New predefined names/methods (Compiler/Interpreter): 237 _HMA (Heterogeneous Memory Attributes) 238 _LSI (Label Storage Information) 239 _LSR (Label Storage Read) 240 _LSW (Label Storage Write) 241 242 ASL grammar/macro changes (Compiler): 243 For() ASL macro, implemented with the AML while operator 244 Extensions to Concatenate operator 245 Support for multiple definition blocks in same ASL file 246 Clarification for Buffer operator 247 Allow executable AML code underneath all scopes (Devices, etc.) 248 Clarification/change for the _OSI return value 249 ASL grammar update for reference operators 250 Allow a zero-length string for AML filename in DefinitionBlock 251 252 Miscellaneous: 253 New device object notification value 254 Remove a notify value (0x0C) for graceful shutdown 255 New UUIDs for processor/cache properties and 256 physical package property 257 New _HID, ACPI0014 (Wireless Power Calibration Device) 258 259 260 1) ACPICA kernel-resident subsystem: 261 262 Added support to disable ACPI events on hardware-reduced platforms. 263 Eliminates error messages of the form "Could not enable fixed event". Lv 264 Zheng 265 266 Fixed a problem using Device/Thermal objects with the ObjectType and 267 DerefOf ASL operators. This support had not been fully/properly 268 implemented. 269 270 Fixed a problem where if a Buffer object containing a resource template 271 was longer than the actual resource template, an error was generated -- 272 even though the AML is legal. This case has been seen in the field. 273 274 Fixed a problem with the header definition of the MADT PCAT_COMPAT flag. 275 The values for DUAL_PIC and MULTIPLE_APIC were reversed. 276 277 Added header file changes for the TPM2 ACPI table. Update to new version 278 of the TCG specification. Adds a new TPM2 subtable for ARM SMC. 279 280 Exported the external interfaces AcpiAcquireMutex and AcpiReleaseMutex. 281 These interfaces are intended to be used only in conjunction with the 282 predefined _DLM method (Device Lock Method). "This object appears in a 283 device scope when AML access to the device must be synchronized with the 284 OS environment". 285 286 Example Code and Data Size: These are the sizes for the OS-independent 287 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 288 debug version of the code includes the debug output trace mechanism and 289 has a much larger code and data size. 290 291 Current Release: 292 Non-Debug Version: 143.1K Code, 60.0K Data, 203.1K Total 293 Debug Version: 204.0K Code, 84.3K Data, 288.3K Total 294 Previous Release: 295 Non-Debug Version: 141.7K Code, 58.5K Data, 200.2K Total 296 Debug Version: 207.5K Code, 82.7K Data, 290.2K Total 297 298 299 2) iASL Compiler/Disassembler and Tools: 300 301 iASL: Fixed a problem where an External() declaration could not refer to 302 a Field Unit. Erik Schmauss. 303 304 Disassembler: Improved support for the Switch/Case operators. This 305 feature will disassemble AML code back to the original Switch operators 306 when possible, instead of an If..Else sequence. David Box 307 308 iASL and disassembler: Improved the handling of multiple extraneous 309 parentheses for both ASL input and disassembled ASL output. 310 311 Improved the behavior of the iASL compiler and disassembler to detect 312 improper use of external declarations 313 314 Disassembler: Now aborts immediately upon detection of an unknown AML 315 opcode. The AML parser has no real way to recover from this, and can 316 result in the creation of an ill-formed parse tree that causes errors 317 later during the disassembly. 318 319 All tools: Fixed a problem where the Unix application OSL did not handle 320 control-c correctly. For example, a control-c could incorrectly wake the 321 debugger. 322 323 AcpiExec: Improved the Control-C handling and added a handler for 324 segmentation faults (SIGSEGV). Supports both Windows and Unix-like 325 environments. 326 327 Reduced the verbosity of the generic unix makefiles. Previously, each 328 compilation displayed the full set of compiler options. This has been 329 eliminated as the options are easily inspected within the makefiles. Each 330 compilation now results in a single line of output. 331 332 ---------------------------------------- 333 03 March 2017. Summary of changes for version 20170303: 334 335 336 0) ACPICA licensing: 337 338 The licensing information at the start of each source code module has 339 been updated. In addition to the Intel license, the dual GPLv2/BSD 340 license has been added for completeness. Now, a single version of the 341 source code should be suitable for all ACPICA customers. This is the 342 major change for this release since it affects all source code modules. 343 344 345 1) ACPICA kernel-resident subsystem: 346 347 Fixed two issues with the common asltypes.h header that could cause 348 problems in some environments: (Kim Jung-uk) 349 Removed typedef for YY_BUFFER_STATE ? 350 Fixes an error with earlier versions of Flex. 351 Removed use of FILE typedef (which is only defined in stdio.h) 352 353 354 2) iASL Compiler/Disassembler and Tools: 355 356 Disassembler: fixed a regression introduced in 20170224. A fix for a 357 memory leak related to resource descriptor tags (names) could fault when 358 the disassembler was generated with 64-bit compilers. 359 360 The ASLTS test suite has been updated to implement a new testing 361 architecture. During generation of the suite from ASL source, both the 362 ASL and ASL+ compilers are now validated, as well as the disassembler 363 itself (Erik Schmauss). The architecture executes as follows: 364 365 For every ASL source module: 366 Compile (legacy ASL compilation) 367 Disassemble the resulting AML to ASL+ source code 368 Compile the new ASL+ module 369 Perform a binary compare on the legacy AML and the new ASL+ AML 370 The ASLTS suite then executes normally using the AML binaries. 371 372 ---------------------------------------- 373 24 February 2017. Summary of changes for version 20170224: 374 375 376 1) ACPICA kernel-resident subsystem: 377 378 Interpreter: Fixed two issues with the control method return value auto- 379 repair feature, where an attempt to double-delete an internal object 380 could result in an ACPICA warning (for _CID repair and others). No fault 381 occurs, however, because the attempted deletion (actually a release to an 382 internal cache) is detected and ignored via object poisoning. 383 384 Debugger: Fixed an AML interpreter mutex issue during the single stepping 385 of control methods. If certain debugger commands are executed during 386 stepping, a mutex aquire/release error could occur. Lv Zheng. 387 388 Fixed some issues generating ACPICA with the Intel C compiler by 389 restoring the original behavior and compiler-specific include file in 390 acenv.h. Lv Zheng. 391 392 Example Code and Data Size: These are the sizes for the OS-independent 393 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 394 debug version of the code includes the debug output trace mechanism and 395 has a much larger code and data size. 396 397 Current Release: 398 Non-Debug Version: 141.7K Code, 58.5K Data, 200.2K Total 399 Debug Version: 207.5K Code, 82.7K Data, 290.2K Total 400 Previous Release: 401 Non-Debug Version: 137.4K Code, 52.6K Data, 190.0K Total 402 Debug Version: 201.5K Code, 82.2K Data, 283.7K Total 403 404 405 2) iASL Compiler/Disassembler and Tools: 406 407 iASL/Disassembler: A preliminary version of a new ASL-to-ASL+ conversion 408 tool has been designed, implemented, and included in this release. The 409 key feature of this utility is that the original comments within the 410 input ASL file are preserved during the conversion process, and included 411 within the converted ASL+ file -- thus creating a transparent conversion 412 of existing ASL files to ASL+ (ASL 2.0). Erik Schmauss. 413 414 Usage: iasl -ca <ASL-filename> // Output is a .dsl file with 415 converted code 416 417 iASL/Disassembler: Improved the detection and correct disassembly of 418 Switch/Case operators. This feature detects sequences of if/elseif/else 419 operators that originated from ASL Switch/Case/Default operators and 420 emits the original operators. David Box. 421 422 iASL: Improved the IORT ACPI table support in the following areas. Lv 423 Zheng: 424 Clear MappingOffset if the MappingCount is zero. 425 Fix the disassembly of the SMMU GSU interrupt offset. 426 Update the template file for the IORT table. 427 428 Disassembler: Enhanced the detection and disassembly of resource 429 template/descriptor within a Buffer object. An EndTag descriptor is now 430 required to have a zero second byte, since all known ASL compilers emit 431 this. This helps eliminate incorrect decisions when a buffer is 432 disassembled (false positives on resource templates). 433 434 ---------------------------------------- 435 19 January 2017. Summary of changes for version 20170119: 436 437 438 1) General ACPICA software: 439 440 Entire source code base: Added the 2017 copyright to all source code 441 legal/licensing module headers and utility/tool signons. This includes 442 the standard Linux dual-license header. This affects virtually every file 443 in the ACPICA core subsystem, iASL compiler, all ACPICA utilities, and 444 the ACPICA test suite. 445 446 447 2) iASL Compiler/Disassembler and Tools: 448 449 iASL: Removed/fixed an inadvertent remark when a method argument 450 containing a reference is used as a target operand within the method (and 451 never used as a simple argument), as in the example below. Jeffrey Hugo. 452 453 dsdt.asl 1507: Store(0x1, Arg0) 454 Remark 2146 - ^ Method Argument is never used (Arg0) 455 456 All tools: Removed the bit width of the compiler that generated the tool 457 from the common signon for all user space tools. This proved to be 458 confusing and unnecessary. This includes similar removal of HARDWARE_NAME 459 from the generic makefiles (Thomas Petazzoni). Example below. 460 461 Old: 462 ASL+ Optimizing Compiler version 20170119-32 463 ASL+ Optimizing Compiler version 20170119-64 464 465 New: 466 ASL+ Optimizing Compiler version 20170119 467 468 ---------------------------------------- 469 22 December 2016. Summary of changes for version 20161222: 470 471 472 1) ACPICA kernel-resident subsystem: 473 474 AML Debugger: Implemented a new mechanism to simplify and enhance 475 debugger integration into all environments, including kernel debuggers 476 and user-space utilities, as well as remote debug services. This 477 mechanism essentially consists of new OSL interfaces to support debugger 478 initialization/termination, as well as wait/notify interfaces to perform 479 the debugger handshake with the host. Lv Zheng. 480 481 New OSL interfaces: 482 AcpiOsInitializeDebugger (void) 483 AcpiOsTerminateDebugger (void) 484 AcpiOsWaitCommandReady (void) 485 AcpiOsNotifyCommandComplete (void) 486 487 New OS services layer: 488 osgendbg.c -- Example implementation, and used for AcpiExec 489 490 Update for Generic Address Space (GAS) support: Although the AccessWidth 491 and/or BitOffset fields of the GAS are not often used, this change now 492 fully supports these fields. This affects the internal support for FADT 493 registers, registers in other ACPI data tables, and the AcpiRead and 494 AcpiWrite public interfaces. Lv Zheng. 495 496 Sleep support: In order to simplify integration of ACPI sleep for the 497 various host operating systems, a new OSL interface has been introduced. 498 AcpiOsEnterSleep allows the host to perform any required operations 499 before the final write to the sleep control register(s) is performed by 500 ACPICA. Lv Zheng. 501 502 New OSL interface: 503 AcpiOsEnterSleep(SleepState, RegisterAValue, RegisterBValue) 504 505 Called from these internal interfaces: 506 AcpiHwLegacySleep 507 AcpiHwExtendedSleep 508 509 EFI support: Added a very small EFI/ACPICA example application. Provides 510 a simple demo for EFI integration, as well as assisting with resolution 511 of issues related to customer ACPICA/EFI integration. Lv Zheng. See: 512 513 source/tools/efihello/efihello.c 514 515 Local C library: Implemented several new functions to enhance ACPICA 516 portability, for environments where these clib functions are not 517 available (such as EFI). Lv Zheng: 518 putchar 519 getchar 520 strpbrk 521 strtok 522 memmove 523 524 Fixed a regression where occasionally a valid resource descriptor was 525 incorrectly detected as invalid at runtime, and a 526 AE_AML_NO_RESOURCE_END_TAG was returned. 527 528 Fixed a problem with the recently implemented support that enables 529 control method invocations as Target operands to many ASL operators. 530 Warnings of this form: "Needed type [Reference], found [Processor]" were 531 seen at runtime for some method invocations. 532 533 Example Code and Data Size: These are the sizes for the OS-independent 534 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 535 debug version of the code includes the debug output trace mechanism and 536 has a much larger code and data size. 537 538 Current Release: 539 Non-Debug Version: 141.5K Code, 58.5K Data, 200.0K Total 540 Debug Version: 201.7K Code, 82.7K Data, 284.4K Total 541 Previous Release: 542 Non-Debug Version: 140.5K Code, 58.5K Data, 198.9K Total 543 Debug Version: 201.3K Code, 82.7K Data, 284.0K Total 544 545 546 2) iASL Compiler/Disassembler and Tools: 547 548 Disassembler: Enhanced output by adding the capability to detect and 549 disassemble ASL Switch/Case statements back to the original ASL source 550 code instead of if/else blocks. David Box. 551 552 AcpiHelp: Split a large file into separate files based upon 553 functionality/purpose. New files are: 554 ahaml.c 555 ahasl.c 556 557 ---------------------------------------- 558 17 November 2016. Summary of changes for version 20161117: 559 560 561 1) ACPICA kernel-resident subsystem: 562 563 Table Manager: Fixed a regression introduced in 20160729, "FADT support 564 cleanup". This was an attempt to remove all references in the source to 565 the FADT version 2, which never was a legal version number. It was 566 skipped because it was an early version of 64-bit support that was 567 eventually abandoned for the current 64-bit support. 568 569 Interpreter: Fixed a problem where runtime implicit conversion was 570 incorrectly disabled for the ASL operators below. This brings the 571 behavior into compliance with the ACPI specification: 572 FromBCD 573 ToBCD 574 ToDecimalString 575 ToHexString 576 ToInteger 577 ToBuffer 578 579 Table Manager: Added a new public interface, AcpiPutTable, used to 580 release and free an ACPI table returned by AcpiGetTable and related 581 interfaces. Lv Zheng. 582 583 Example Code and Data Size: These are the sizes for the OS-independent 584 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 585 debug version of the code includes the debug output trace mechanism and 586 has a much larger code and data size. 587 588 Current Release: 589 Non-Debug Version: 140.5K Code, 58.5K Data, 198.9K Total 590 Debug Version: 201.3K Code, 82.7K Data, 284.0K Total 591 Previous Release: 592 Non-Debug Version: 140.4K Code, 58.1K Data, 198.5K Total 593 Debug Version: 200.7K Code, 82.1K Data, 282.8K Total 594 595 596 2) iASL Compiler/Disassembler and Tools: 597 598 Disassembler: Fixed a regression for disassembly of Resource Template. 599 Detection of templates in the AML stream missed some types of templates. 600 601 iASL: Fixed a problem where an Access Size error was returned for the PCC 602 address space when the AccessSize of the GAS register is greater than a 603 DWORD. Hoan Tran. 604 605 iASL: Implemented several grammar changes for the operators below. These 606 changes are slated for the next version of the ACPI specification: 607 RefOf - Disallow method invocation as an operand 608 CondRefOf - Disallow method invocation as an operand 609 DerefOf - Disallow operands that use the result from operators 610 that 611 do not return a reference (Changed TermArg to 612 SuperName). 613 614 iASL: Control method invocations are now allowed for Target operands, as 615 per the ACPI specification. Removed error for using a control method 616 invocation as a Target operand. 617 618 Disassembler: Improved detection of Resource Templates, Unicode, and 619 Strings within Buffer objects. These subtypes do not contain a specific 620 opcode to indicate the originating ASL code, and they must be detected by 621 other means within the disassembler. 622 623 iASL: Implemented an optimization improvement for 32-bit ACPI tables 624 (DSDT/SSDT). For the 32-bit case only, compute the optimum integer opcode 625 only after 64-bit to 32-bit truncation. A truncation warning message is 626 still emitted, however. 627 628 AcpiXtract: Implemented handling for both types of line terminators (LF 629 or CR/LF) so that it can accept AcpiDump output files from any system. 630 Peter Wu. 631 632 AcpiBin: Added two new options for comparing AML files: 633 -a: compare and display ALL mismatches 634 -o: start compare at this offset into the second file 635 636 ---------------------------------------- 637 30 September 2016. Summary of changes for version 20160930: 638 639 640 1) ACPICA kernel-resident subsystem: 641 642 Fixed a regression in the internal AcpiTbFindTable function where a non 643 AE_OK exception could inadvertently be returned even if the function did 644 not fail. This problem affects the following operators: 645 DataTableRegion 646 LoadTable 647 648 Fixed a regression in the LoadTable operator where a load to any 649 namespace location other than the root no longer worked properly. 650 651 Increased the maximum loop count value that will result in the 652 AE_AML_INFINITE_LOOP exception. This is a mechanism that is intended to 653 prevent infinite loops within the AML interpreter and thus the host OS 654 kernel. The value is increased from 0xFFFF to 0xFFFFF loops (65,535 to 655 1,048,575). 656 657 Moved the AcpiGbl_MaxLoopIterations configuration variable to the public 658 acpixf.h file. This allows hosts to easily configure the maximum loop 659 count at runtime. 660 661 Removed an illegal character in the strtoul64.c file. This character 662 caused errors with some C compilers. 663 664 Example Code and Data Size: These are the sizes for the OS-independent 665 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 666 debug version of the code includes the debug output trace mechanism and 667 has a much larger code and data size. 668 669 Current Release: 670 Non-Debug Version: 140.4K Code, 58.1K Data, 198.5K Total 671 Debug Version: 200.7K Code, 82.1K Data, 282.8K Total 672 Previous Release: 673 Non-Debug Version: 140.0K Code, 58.1K Data, 198.1K Total 674 Debug Version: 200.3K Code, 82.1K Data, 282.4K Total 675 676 677 2) iASL Compiler/Disassembler and Tools: 678 679 Disassembler: Fixed a problem with the conversion of Else{If{ blocks into 680 the simpler ASL ElseIf keyword. During the conversion, a trailing If 681 block could be lost and missing from the disassembled output. 682 683 iASL: Fixed a missing parser rule for the ObjectType operator. For ASL+, 684 the missing rule caused a parse error when using the Index operator as an 685 operand to ObjectType. This construct now compiles properly. Example: 686 ObjectType(PKG1[4]). 687 688 iASL: Correctly handle unresolved symbols in the hardware map file (-lm 689 option). Previously, unresolved symbols could cause a protection fault. 690 Such symbols are now marked as unresolved in the map file. 691 692 iASL: Implemented support to allow control method invocations as an 693 operand to the ASL DeRefOf operator. Example: 694 DeRefOf(MTH1(Local0)) 695 696 Disassembler: Improved support for the ToPLD ASL macro. Detection of a 697 possible _PLD buffer now includes examination of both the normal buffer 698 length (16 or 20) as well as the surrounding AML package length. 699 700 Disassembler: Fixed a problem with the decoding of complex expressions 701 within the Divide operator for ASL+. For the case where both the quotient 702 and remainder targets are specified, the entire statement cannot be 703 disassembled. Previously, the output incorrectly contained a mix of ASL- 704 and ASL+ operators. This mixed statement causes a syntax error when 705 compiled. Example: 706 Divide (Add (INT1, 6), 128, RSLT, QUOT) // was incorrectly 707 disassembled to: 708 Divide (INT1 + 6, 128, RSLT, QUOT) 709 710 iASL/Tools: Added support to process AML and non-AML ACPI tables 711 consistently. For the disassembler and AcpiExec, allow all types of ACPI 712 tables (AML and data tables). For the iASL -e option, allow only AML 713 tables (DSDT/SSDT). 714 715 ---------------------------------------- 716 31 August 2016. Summary of changes for version 20160831: 717 718 719 1) ACPICA kernel-resident subsystem: 720 721 Improve support for the so-called "module-level code", which is defined 722 to be math, logical and control AML opcodes that appear outside of any 723 control method. This change improves the support by adding more opcodes 724 that can be executed in the manner. Some other issues have been solved, 725 and the ASL grammar changes to support such code under all scope 726 operators (Device, etc.) are complete. Lv Zheng. 727 728 UEFI support: these OSL functions have been implemented. This is an 729 additional step toward supporting the AcpiExec utility natively (with 730 full hardware access) under UEFI. Marcelo Ferreira. 731 AcpiOsReadPciConfiguration 732 AcpiOsWritePciConfiguration 733 734 Fixed a possible mutex error during control method auto-serialization. Lv 735 Zheng. 736 737 Updated support for the Generic Address Structure by fully implementing 738 all GAS fields when a 32-bit address is expanded to a 64-bit GAS. Lv 739 Zheng. 740 741 Updated the return value for the internal _OSI method. Instead of 742 0xFFFFFFFF, the "Ones" value is now returned, which is 0xFFFFFFFFFFFFFFFF 743 for 64-bit ACPI tables. This fixes an incompatibility with other ACPI 744 implementations, and will be reflected and clarified in the next version 745 of the ACPI specification. 746 747 Implemented two new table events that can be passed to an ACPICA table 748 handler. These events are used to indicate a table installation or 749 uninstallation. These events are used in addition to existed table load 750 and unload events. Lv Zheng. 751 752 Implemented a cleanup for all internal string-to-integer conversions. 753 Consolidate multiple versions of this functionality and limit possible 754 bases to either 10 or 16 to simplify the code. Adds a new file, 755 utstrtoul64. 756 757 Cleanup the inclusion order of the various compiler-specific headers. 758 This simplifies build configuration management. The compiler-specific 759 headers are now split out from the host-specific headers. Lv Zheng. 760 761 Example Code and Data Size: These are the sizes for the OS-independent 762 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 763 debug version of the code includes the debug output trace mechanism and 764 has a much larger code and data size. 765 766 Current Release: 767 Non-Debug Version: 140.1K Code, 58.1K Data, 198.1K Total 768 Debug Version: 200.3K Code, 82.1K Data, 282.4K Total 769 770 771 2) iASL Compiler/Disassembler and Tools: 772 773 iASL/AcpiExec: Added a command line option to display the build date/time 774 of the tool (-vd). This can be useful to verify that the correct version 775 of the tools are being used. 776 777 AML Debugger: Implemented a new subcommand ("execute predef") to execute 778 all predefined control methods and names within the current namespace. 779 This can be useful for debugging problems with ACPI tables and the ACPI 780 namespace. 781 782 ---------------------------------------- 783 29 July 2016. Summary of changes for version 20160729: 784 785 786 1) ACPICA kernel-resident subsystem: 787 788 Implemented basic UEFI support for the various ACPICA tools. This 789 includes: 790 1) An OSL to implement the various AcpiOs* interfaces on UEFI. 791 2) Support to obtain the ACPI tables on UEFI. 792 3) Local implementation of required C library functions not available on 793 UEFI. 794 4) A front-end (main) function for the tools for UEFI-related 795 initialization. 796 797 The initial deployment of this support is the AcpiDump utility executing 798 as an UEFI application via EDK2 (EDKII, "UEFI Firmware Development Kit"). 799 Current environments supported are Linux/Unix. MSVC generation is not 800 supported at this time. See the generate/efi/README file for build 801 instructions. Lv Zheng. 802 803 Future plans include porting the AcpiExec utility to execute natively on 804 the platform with I/O and memory access. This will allow viewing/dump of 805 the platform namespace and native execution of ACPI control methods that 806 access the actual hardware. To fully implement this support, the OSL 807 functions below must be implemented with UEFI interfaces. Any community 808 help in the implementation of these functions would be appreciated: 809 AcpiOsReadPort 810 AcpiOsWritePort 811 AcpiOsReadMemory 812 AcpiOsWriteMemory 813 AcpiOsReadPciConfiguration 814 AcpiOsWritePciConfiguration 815 816 Restructured and standardized the C library configuration for ACPICA, 817 resulting in the various configuration options below. This includes a 818 global restructuring of the compiler-dependent and platform-dependent 819 include files. These changes may affect the existing platform-dependent 820 configuration files on some hosts. Lv Zheng. 821 822 The current C library configuration options appear below. For any issues, 823 it may be helpful to examine the existing compiler-dependent and 824 platform-dependent files as examples. Lv Zheng. 825 826 1) Linux kernel: 827 ACPI_USE_STANDARD_HEADERS=n in order not to use system-provided C 828 library. 829 ACPI_USE_SYSTEM_CLIBRARY=y in order not to use ACPICA mini C library. 830 2) Unix/Windows/BSD applications: 831 ACPI_USE_STANDARD_HEADERS=y in order to use system-provided C 832 library. 833 ACPI_USE_SYSTEM_CLIBRARY=y in order not to use ACPICA mini C library. 834 3) UEFI applications: 835 ACPI_USE_STANDARD_HEADERS=n in order not to use system-provided C 836 library. 837 ACPI_USE_SYSTEM_CLIBRARY=n in order to use ACPICA mini C library. 838 4) UEFI applications (EDK2/StdLib): 839 ACPI_USE_STANDARD_HEADERS=y in order to use EDK2 StdLib C library. 840 ACPI_USE_SYSTEM_CLIBRARY=y in order to use EDK2 StdLib C library. 841 842 843 AML interpreter: "module-level code" support. Allows for execution of so- 844 called "executable" AML code (math/logical operations, etc.) outside of 845 control methods not just at the module level (top level) but also within 846 any scope declared outside of a control method - Scope{}, Device{}, 847 Processor{}, PowerResource{}, and ThermalZone{}. Lv Zheng. 848 849 Simplified the configuration of the "maximum AML loops" global option by 850 adding a global public variable, "AcpiGbl_MaxLoopIterations" which can be 851 modified at runtime. 852 853 854 Example Code and Data Size: These are the sizes for the OS-independent 855 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 856 debug version of the code includes the debug output trace mechanism and 857 has a much larger code and data size. 858 859 Current Release: 860 Non-Debug Version: 139.1K Code, 22.9K Data, 162.0K Total 861 Debug Version: 199.0K Code, 81.8K Data, 280.8K Total 862 863 864 2) iASL Compiler/Disassembler and Tools: 865 866 iASL: Add full support for the RASF ACPI table (RAS Features Table). 867 Includes disassembler, data table compiler, and header support. 868 869 iASL Expand "module-level code" support. Allows for 870 compilation/disassembly of so-called "executable" AML code (math/logical 871 operations, etc.) outside of control methods not just at the module level 872 (top level) but also within any scope declared outside of a control 873 method - Scope{}, Device{}, Processor{}, PowerResource{}, and 874 ThermalZone{}. 875 876 AcpiDump: Added support for dumping all SSDTs on newer versions of 877 Windows. These tables are now easily available -- SSDTs are not available 878 through the registry on older versions. 879 880 ---------------------------------------- 881 27 May 2016. Summary of changes for version 20160527: 882 883 884 1) ACPICA kernel-resident subsystem: 885 886 Temporarily reverted the new arbitrary bit length/alignment support in 887 AcpiHwRead/AcpiHwWrite for the Generic Address Structure. There have been 888 a number of regressions with the new code that need to be fully resolved 889 and tested before this support can be finally integrated into ACPICA. 890 Apologies for any inconveniences these issues may have caused. 891 892 The ACPI message macros are not configurable (ACPI_MSG_ERROR, 893 ACPI_MSG_EXCEPTION, ACPI_MSG_WARNING, ACPI_MSG_INFO, ACPI_MSG_BIOS_ERROR, 894 and ACPI_MSG_BIOS_WARNING). Lv Zheng. 895 896 Fixed a couple of GCC warnings associated with the use of the -Wcast-qual 897 option. Adds a new return macro, return_STR. Junk-uk Kim. 898 899 Example Code and Data Size: These are the sizes for the OS-independent 900 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 901 debug version of the code includes the debug output trace mechanism and 902 has a much larger code and data size. 903 904 Current Release: 905 Non-Debug Version: 136.8K Code, 51.6K Data, 188.4K Total 906 Debug Version: 201.5K Code, 82.2K Data, 283.7K Total 907 Previous Release: 908 Non-Debug Version: 137.4K Code, 52.6K Data, 190.0K Total 909 Debug Version: 200.9K Code, 82.2K Data, 283.1K Total 910 911 ---------------------------------------- 912 22 April 2016. Summary of changes for version 20160422: 913 914 1) ACPICA kernel-resident subsystem: 915 916 Fixed a regression in the GAS (generic address structure) arbitrary bit 917 support in AcpiHwRead/AcpiHwWrite. Problem could cause incorrect behavior 918 and incorrect return values. Lv Zheng. ACPICA BZ 1270. 919 920 ACPI 6.0: Added support for new/renamed resource macros. One new argument 921 was added to each of these macros, and the original name has been 922 deprecated. The AML disassembler will always disassemble to the new 923 names. Support for the new macros was added to iASL, disassembler, 924 resource manager, and the acpihelp utility. ACPICA BZ 1274. 925 926 I2cSerialBus -> I2cSerialBusV2 927 SpiSerialBus -> SpiSerialBusV2 928 UartSerialBus -> UartSerialBusV2 929 930 ACPI 6.0: Added support for a new integer field that was appended to the 931 package object returned by the _BIX method. This adds iASL compile-time 932 and AML runtime error checking. ACPICA BZ 1273. 933 934 ACPI 6.1: Added support for a new PCCT subtable, "HW-Reduced Comm 935 Subspace Type2" (Headers, Disassembler, and data table compiler). 936 937 Example Code and Data Size: These are the sizes for the OS-independent 938 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 939 debug version of the code includes the debug output trace mechanism and 940 has a much larger code and data size. 941 942 Current Release: 943 Non-Debug Version: 137.4K Code, 52.6K Data, 190.0K Total 944 Debug Version: 201.5K Code, 82.2K Data, 283.7K Total 945 Previous Release: 946 Non-Debug Version: 137.1K Code, 51.5K Data, 188.6K Total 947 Debug Version: 201.0K Code, 82.0K Data, 283.0K Total 948 949 950 2) iASL Compiler/Disassembler and Tools: 951 952 iASL: Implemented an ASL grammar extension to allow/enable executable 953 "module-level code" to be created and executed under the various 954 operators that create new scopes. This type of AML code is already 955 supported in all known AML interpreters, and the grammar change will 956 appear in the next version of the ACPI specification. Simplifies the 957 conditional runtime creation of named objects under these object types: 958 959 Device 960 PowerResource 961 Processor 962 Scope 963 ThermalZone 964 965 iASL: Implemented a new ASL extension, a "For" loop macro to add greater 966 ease-of-use to the ASL language. The syntax is similar to the 967 corresponding C operator, and is implemented with the existing AML While 968 opcode -- thus requiring no changes to existing AML interpreters. 969 970 For (Initialize, Predicate, Update) {TermList} 971 972 Grammar: 973 ForTerm := 974 For ( 975 Initializer // Nothing | TermArg => ComputationalData 976 Predicate // Nothing | TermArg => ComputationalData 977 Update // Nothing | TermArg => ComputationalData 978 ) {TermList} 979 980 981 iASL: The _HID/_ADR detection and validation has been enhanced to search 982 under conditionals in order to allow these objects to be conditionally 983 created at runtime. 984 985 iASL: Fixed several issues with the constant folding feature. The 986 improvement allows better detection and resolution of statements that can 987 be folded at compile time. ACPICA BZ 1266. 988 989 iASL/Disassembler: Fixed a couple issues with the Else{If{}...} 990 conversion to the ASL ElseIf operator where incorrect ASL code could be 991 generated. 992 993 iASL/Disassembler: Fixed a problem with the ASL+ code disassembly where 994 sometimes an extra (and extraneous) set of parentheses were emitted for 995 some combinations of operators. Although this did not cause any problems 996 with recompilation of the disassembled code, it made the code more 997 difficult to read. David Box. ACPICA BZ 1231. 998 999 iASL: Changed to ignore the unreferenced detection for predefined names 1000 of resource descriptor elements, when the resource descriptor is 1001 created/defined within a control method. 1002 1003 iASL: Disassembler: Fix a possible fault with externally declared Buffer 1004 objects. 1005 1006 ---------------------------------------- 1007 18 March 2016. Summary of changes for version 20160318: 1008 1009 1) ACPICA kernel-resident subsystem: 1010 1011 Added support for arbitrary bit lengths and bit offsets for registers 1012 defined by the Generic Address Structure. Previously, only aligned bit 1013 lengths of 8/16/32/64 were supported. This was sufficient for many years, 1014 but recently some machines have been seen that require arbitrary bit- 1015 level support. ACPICA BZ 1240. Lv Zheng. 1016 1017 Fixed an issue where the \_SB._INI method sometimes must be evaluated 1018 before any _REG methods are evaluated. Lv Zheng. 1019 1020 Implemented several changes related to ACPI table support 1021 (Headers/Disassembler/TableCompiler): 1022 NFIT: For ACPI 6.1, updated to add some additional new fields and 1023 constants. 1024 FADT: Updated a warning message and set compliance to ACPI 6.1 (Version 1025 6). 1026 DMAR: Added new constants per the 10/2014 DMAR spec. 1027 IORT: Added new subtable per the 10/2015 IORT spec. 1028 HEST: For ACPI 6.1, added new constants and new subtable. 1029 DBG2: Added new constants per the 12/2015 DBG2 spec. 1030 FPDT: Fixed several incorrect fields, add the FPDT boot record structure. 1031 ACPICA BZ 1249. 1032 ERST/EINJ: Updated disassembler with new "Execute Timings" actions. 1033 1034 Updated header support for the DMAR table to match the current version of 1035 the related spec. 1036 1037 Added extensions to the ASL Concatenate operator to allow any ACPI object 1038 to be passed as an operand. Any object other than Integer/String/Buffer 1039 simply returns a string containing the object type. This extends the 1040 usefulness of the Printf macros. Previously, Concatenate would abort the 1041 control method if a non-data object was encountered. 1042 1043 ACPICA source code: Deployed the C "const" keyword across the source code 1044 where appropriate. ACPICA BZ 732. Joerg Sonnenberger (NetBSD). 1045 1046 Example Code and Data Size: These are the sizes for the OS-independent 1047 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1048 debug version of the code includes the debug output trace mechanism and 1049 has a much larger code and data size. 1050 1051 Current Release: 1052 Non-Debug Version: 137.1K Code, 51.5K Data, 188.6K Total 1053 Debug Version: 201.0K Code, 82.0K Data, 283.0K Total 1054 Previous Release: 1055 Non-Debug Version: 136.2K Code, 51.5K Data, 187.7K Total 1056 Debug Version: 200.4K Code, 82.0K Data, 282.4K Total 1057 1058 1059 2) iASL Compiler/Disassembler and Tools: 1060 1061 iASL/Disassembler: Improved the heuristic used to determine the number of 1062 arguments for an externally defined control method (a method in another 1063 table). Although this is an improvement, there is no deterministic way to 1064 "guess" the number of method arguments. Only the ACPI 6.0 External opcode 1065 will completely solve this problem as it is deployed (automatically) in 1066 newer BIOS code. 1067 1068 iASL/Disassembler: Fixed an ordering issue for emitted External() ASL 1069 statements that could cause errors when the disassembled file is 1070 compiled. ACPICA BZ 1243. David Box. 1071 1072 iASL: Fixed a regression caused by the merger of the two versions of the 1073 local strtoul64. Because of a dependency on a global variable, strtoul64 1074 could return an error for integers greater than a 32-bit value. ACPICA BZ 1075 1260. 1076 1077 iASL: Fixed a regression where a fault could occur for an ASL Return 1078 statement if it invokes a control method that is not resolved. ACPICA BZ 1079 1264. 1080 1081 AcpiXtract: Improved input file validation: detection of binary files and 1082 non-acpidump text files. 1083 1084 ---------------------------------------- 1085 12 February 2016. Summary of changes for version 20160212: 1086 1087 1) ACPICA kernel-resident subsystem: 1088 1089 Implemented full support for the ACPI 6.1 specification (released in 1090 January). This version of the specification is available at: 1091 http://www.uefi.org/specifications 1092 1093 Only a relatively small number of changes were required in ACPICA to 1094 support ACPI 6.1, in these areas: 1095 - New predefined names 1096 - New _HID values 1097 - A new subtable for HEST 1098 - A few other header changes for new values 1099 1100 Ensure \_SB_._INI is executed before any _REG methods are executed. There 1101 appears to be existing BIOS code that relies on this behavior. Lv Zheng. 1102 1103 Reverted a change made in version 20151218 which enabled method 1104 invocations to be targets of various ASL operators (SuperName and Target 1105 grammar elements). While the new behavior is supported by the ACPI 1106 specification, other AML interpreters do not support this behavior and 1107 never will. The ACPI specification will be updated for ACPI 6.2 to remove 1108 this support. Therefore, the change was reverted to the original ACPICA 1109 behavior. 1110 1111 ACPICA now supports the GCC 6 compiler. 1112 1113 Current Release: (Note: build changes increased sizes) 1114 Non-Debug Version: 136.2K Code, 51.5K Data, 187.7K Total 1115 Debug Version: 200.4K Code, 82.0K Data, 282.4K Total 1116 Previous Release: 1117 Non-Debug Version: 102.7K Code, 28.4K Data, 131.1K Total 1118 Debug Version: 200.4K Code, 81.9K Data, 282.3K Total 1119 1120 1121 2) iASL Compiler/Disassembler and Tools: 1122 1123 Completed full support for the ACPI 6.0 External() AML opcode. The 1124 compiler emits an external AML opcode for each ASL External statement. 1125 This opcode is used by the disassembler to assist with the disassembly of 1126 external control methods by specifying the required number of arguments 1127 for the method. AML interpreters do not use this opcode. To ensure that 1128 interpreters do not even see the opcode, a block of one or more external 1129 opcodes is surrounded by an "If(0)" construct. As this feature becomes 1130 commonly deployed in BIOS code, the ability of disassemblers to correctly 1131 disassemble AML code will be greatly improved. David Box. 1132 1133 iASL: Implemented support for an optional cross-reference output file. 1134 The -lx option will create a the cross-reference file with the suffix 1135 "xrf". Three different types of cross-reference are created in this file: 1136 - List of object references made from within each control method 1137 - Invocation (caller) list for each user-defined control method 1138 - List of references to each non-method object in the namespace 1139 1140 iASL: Method invocations as ASL Target operands are now disallowed and 1141 flagged as errors in preparation for ACPI 6.2 (see the description of the 1142 problem above). 1143 1144 ---------------------------------------- 1145 8 January 2016. Summary of changes for version 20160108: 1146 1147 1) ACPICA kernel-resident subsystem: 1148 1149 Updated all ACPICA copyrights and signons to 2016: Added the 2016 1150 copyright to all source code module headers and utility/tool signons. 1151 This includes the standard Linux dual-license header. This affects 1152 virtually every file in the ACPICA core subsystem, iASL compiler, all 1153 ACPICA utilities, and the ACPICA test suite. 1154 1155 Fixed a regression introduced in version 20151218 concerning the 1156 execution of so-called module-level ASL/AML code. Namespace objects 1157 created under a module-level If() construct were not properly/fully 1158 entered into the namespace and could cause an interpreter fault when 1159 accessed. 1160 1161 Example Code and Data Size: These are the sizes for the OS-independent 1162 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1163 debug version of the code includes the debug output trace mechanism and 1164 has a much larger code and data size. 1165 1166 Current Release: 1167 Non-Debug Version: 102.7K Code, 28.4K Data, 131.1K Total 1168 Debug Version: 200.4K Code, 81.9K Data, 282.4K Total 1169 Previous Release: 1170 Non-Debug Version: 102.6K Code, 28.4K Data, 131.0K Total 1171 Debug Version: 200.3K Code, 81.9K Data, 282.3K Total 1172 1173 1174 2) iASL Compiler/Disassembler and Tools: 1175 1176 Fixed a problem with the compilation of the GpioIo and GpioInt resource 1177 descriptors. The _PIN field name was incorrectly defined to be an array 1178 of 32-bit values, but the _PIN values are in fact 16 bits each. This 1179 would cause incorrect bit width warnings when using Word (16-bit) fields 1180 to access the descriptors. 1181 1182 1183 ---------------------------------------- 1184 18 December 2015. Summary of changes for version 20151218: 1185 1186 1) ACPICA kernel-resident subsystem: 1187 1188 Implemented per-AML-table execution of "module-level code" as individual 1189 ACPI tables are loaded into the namespace during ACPICA initialization. 1190 In other words, any module-level code within an AML table is executed 1191 immediately after the table is loaded, instead of batched and executed 1192 after all of the tables have been loaded. This provides compatibility 1193 with other ACPI implementations. ACPICA BZ 1219. Bob Moore, Lv Zheng, 1194 David Box. 1195 1196 To fully support the feature above, the default operation region handlers 1197 for the SystemMemory, SystemIO, and PCI_Config address spaces are now 1198 installed before any ACPI tables are loaded. This enables module-level 1199 code to access these address spaces during the table load and module- 1200 level code execution phase. ACPICA BZ 1220. Bob Moore, Lv Zheng, David 1201 Box. 1202 1203 Implemented several changes to the internal _REG support in conjunction 1204 with the changes above. Also, changes to the AcpiExec/AcpiNames/Examples 1205 utilities for the changes above. Although these tools were changed, host 1206 operating systems that simply use the default handlers for SystemMemory, 1207 SystemIO, and PCI_Config spaces should not require any update. Lv Zheng. 1208 1209 For example, in the code below, DEV1 is conditionally added to the 1210 namespace by the DSDT via module-level code that accesses an operation 1211 region. The SSDT references DEV1 via the Scope operator. DEV1 must be 1212 created immediately after the DSDT is loaded in order for the SSDT to 1213 successfully reference DEV1. Previously, this code would cause an 1214 AE_NOT_EXIST exception during the load of the SSDT. Now, this code is 1215 fully supported by ACPICA. 1216 1217 DefinitionBlock ("", "DSDT", 2, "Intel", "DSDT1", 1) 1218 { 1219 OperationRegion (OPR1, SystemMemory, 0x400, 32) 1220 Field (OPR1, AnyAcc, NoLock, Preserve) 1221 { 1222 FLD1, 1 1223 } 1224 If (FLD1) 1225 { 1226 Device (\DEV1) 1227 { 1228 } 1229 } 1230 } 1231 DefinitionBlock ("", "SSDT", 2, "Intel", "SSDT1", 1) 1232 { 1233 External (\DEV1, DeviceObj) 1234 Scope (\DEV1) 1235 { 1236 } 1237 } 1238 1239 Fixed an AML interpreter problem where control method invocations were 1240 not handled correctly when the invocation was itself a SuperName argument 1241 to another ASL operator. In these cases, the method was not invoked. 1242 ACPICA BZ 1002. Affects the following ASL operators that have a SuperName 1243 argument: 1244 Store 1245 Acquire, Wait 1246 CondRefOf, RefOf 1247 Decrement, Increment 1248 Load, Unload 1249 Notify 1250 Signal, Release, Reset 1251 SizeOf 1252 1253 Implemented automatic String-to-ObjectReference conversion support for 1254 packages returned by predefined names (such as _DEP). A common BIOS error 1255 is to add double quotes around an ObjectReference namepath, which turns 1256 the reference into an unexpected string object. This support detects the 1257 problem and corrects it before the package is returned to the caller that 1258 invoked the method. Lv Zheng. 1259 1260 Implemented extensions to the Concatenate operator. Concatenate now 1261 accepts any type of object, it is not restricted to simply 1262 Integer/String/Buffer. For objects other than these 3 basic data types, 1263 the argument is treated as a string containing the name of the object 1264 type. This expands the utility of Concatenate and the Printf/Fprintf 1265 macros. ACPICA BZ 1222. 1266 1267 Cleaned up the output of the ASL Debug object. The timer() value is now 1268 optional and no longer emitted by default. Also, the basic data types of 1269 Integer/String/Buffer are simply emitted as their values, without a data 1270 type string -- since the data type is obvious from the output. ACPICA BZ 1271 1221. 1272 1273 Example Code and Data Size: These are the sizes for the OS-independent 1274 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1275 debug version of the code includes the debug output trace mechanism and 1276 has a much larger code and data size. 1277 1278 Current Release: 1279 Non-Debug Version: 102.6K Code, 28.4K Data, 131.0K Total 1280 Debug Version: 200.3K Code, 81.9K Data, 282.3K Total 1281 Previous Release: 1282 Non-Debug Version: 102.0K Code, 28.3K Data, 130.3K Total 1283 Debug Version: 199.6K Code, 81.8K Data, 281.4K Total 1284 1285 1286 2) iASL Compiler/Disassembler and Tools: 1287 1288 iASL: Fixed some issues with the ASL Include() operator. This operator 1289 was incorrectly defined in the iASL parser rules, causing a new scope to 1290 be opened for the code within the include file. This could lead to 1291 several issues, including allowing ASL code that is technically illegal 1292 and not supported by AML interpreters. Note, this does not affect the 1293 related #include preprocessor operator. ACPICA BZ 1212. 1294 1295 iASL/Disassembler: Implemented support for the ASL ElseIf operator. This 1296 operator is essentially an ASL macro since there is no AML opcode 1297 associated with it. The code emitted by the iASL compiler for ElseIf is 1298 an Else opcode followed immediately by an If opcode. The disassembler 1299 will now emit an ElseIf if it finds an Else immediately followed by an 1300 If. This simplifies the decoded ASL, especially for deeply nested 1301 If..Else and large Switch constructs. Thus, the disassembled code more 1302 closely follows the original source ASL. ACPICA BZ 1211. Example: 1303 1304 Old disassembly: 1305 Else 1306 { 1307 If (Arg0 == 0x02) 1308 { 1309 Local0 = 0x05 1310 } 1311 } 1312 1313 New disassembly: 1314 ElseIf (Arg0 == 0x02) 1315 { 1316 Local0 = 0x05 1317 } 1318 1319 AcpiExec: Added support for the new module level code behavior and the 1320 early region installation. This required a small change to the 1321 initialization, since AcpiExec must install its own operation region 1322 handlers. 1323 1324 AcpiExec: Added support to make the debug object timer optional. Default 1325 is timer disabled. This cleans up the debug object output -- the timer 1326 data is rarely used. 1327 1328 AcpiExec: Multiple ACPI tables are now loaded in the order that they 1329 appear on the command line. This can be important when there are 1330 interdependencies/references between the tables. 1331 1332 iASL/Templates. Add support to generate template files with multiple 1333 SSDTs within a single output file. Also added ommand line support to 1334 specify the number of SSDTs (in addition to a single DSDT). ACPICA BZ 1335 1223, 1225. 1336 1337 1338 ---------------------------------------- 1339 24 November 2015. Summary of changes for version 20151124: 1340 1341 1) ACPICA kernel-resident subsystem: 1342 1343 Fixed a possible regression for a previous update to FADT handling. The 1344 FADT no longer has a fixed table ID, causing some issues with code that 1345 was hardwired to a specific ID. Lv Zheng. 1346 1347 Fixed a problem where the method auto-serialization could interfere with 1348 the current SyncLevel. This change makes the auto-serialization support 1349 transparent to the SyncLevel support and management. 1350 1351 Removed support for the _SUB predefined name in AcpiGetObjectInfo. This 1352 interface is intended for early access to the namespace during the 1353 initial namespace device discovery walk. The _SUB method has been seen to 1354 access operation regions in some cases, causing errors because the 1355 operation regions are not fully initialized. 1356 1357 AML Debugger: Fixed some issues with the terminate/quit/exit commands 1358 that can cause faults. Lv Zheng. 1359 1360 AML Debugger: Add thread ID support so that single-step mode only applies 1361 to the AML Debugger thread. This prevents runtime errors within some 1362 kernels. Lv Zheng. 1363 1364 Eliminated extraneous warnings from AcpiGetSleepTypeData. Since the _Sx 1365 methods that are invoked by this interface are optional, removed warnings 1366 emitted for the case where one or more of these methods do not exist. 1367 ACPICA BZ 1208, original change by Prarit Bhargava. 1368 1369 Made a major pass through the entire ACPICA source code base to 1370 standardize formatting that has diverged a bit over time. There are no 1371 functional changes, but this will of course cause quite a few code 1372 differences from the previous ACPICA release. 1373 1374 Example Code and Data Size: These are the sizes for the OS-independent 1375 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1376 debug version of the code includes the debug output trace mechanism and 1377 has a much larger code and data size. 1378 1379 Current Release: 1380 Non-Debug Version: 102.0K Code, 28.3K Data, 130.3K Total 1381 Debug Version: 199.6K Code, 81.8K Data, 281.4K Total 1382 Previous Release: 1383 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total 1384 Debug Version: 199.3K Code, 81.4K Data, 280.7K Total 1385 1386 1387 2) iASL Compiler/Disassembler and Tools: 1388 1389 iASL/acpiexec/acpixtract/disassembler: Added support to allow multiple 1390 definition blocks within a single ASL file and the resulting AML file. 1391 Support for this type of file was also added to the various tools that 1392 use binary AML files: acpiexec, acpixtract, and the AML disassembler. The 1393 example code below shows two definition blocks within the same file: 1394 1395 DefinitionBlock ("dsdt.aml", "DSDT", 2, "Intel", "Template", 1396 0x12345678) 1397 { 1398 } 1399 DefinitionBlock ("", "SSDT", 2, "Intel", "Template", 0xABCDEF01) 1400 { 1401 } 1402 1403 iASL: Enhanced typechecking for the Name() operator. All expressions for 1404 the value of the named object must be reduced/folded to a single constant 1405 at compile time, as per the ACPI specification (the AML definition of 1406 Name()). 1407 1408 iASL: Fixed some code indentation issues for the -ic and -ia options (C 1409 and assembly headers). Now all emitted code correctly begins in column 1. 1410 1411 iASL: Added an error message for an attempt to open a Scope() on an 1412 object defined in an SSDT. The DSDT is always loaded into the namespace 1413 first, so any attempt to open a Scope on an SSDT object will fail at 1414 runtime. 1415 1416 1417 ---------------------------------------- 1418 30 September 2015. Summary of changes for version 20150930: 1419 1420 1) ACPICA kernel-resident subsystem: 1421 1422 Debugger: Implemented several changes and bug fixes to assist support for 1423 the in-kernel version of the AML debugger. Lv Zheng. 1424 - Fix the "predefined" command for in-kernel debugger. 1425 - Do not enter debug command loop for the help and version commands. 1426 - Disallow "execute" command during execution/single-step of a method. 1427 1428 Interpreter: Updated runtime typechecking for all operators that have 1429 target operands. The operand is resolved and validated that it is legal. 1430 For example, the target cannot be a non-data object such as a Device, 1431 Mutex, ThermalZone, etc., as per the ACPI specification. 1432 1433 Debugger: Fixed the double-mutex user I/O handshake to work when local 1434 deadlock detection is enabled. 1435 1436 Debugger: limited display of method locals and arguments (LocalX and 1437 ArgX) to only those that have actually been initialized. This prevents 1438 lines of extraneous output. 1439 1440 Updated the definition of the NFIT table to correct the bit polarity of 1441 one flag: ACPI_NFIT_MEM_ARMED --> ACPI_NFIT_MEM_NOT_ARMED 1442 1443 Example Code and Data Size: These are the sizes for the OS-independent 1444 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1445 debug version of the code includes the debug output trace mechanism and 1446 has a much larger code and data size. 1447 1448 Current Release: 1449 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total 1450 Debug Version: 199.3K Code, 81.4K Data, 280.7K Total 1451 Previous Release: 1452 Non-Debug Version: 101.3K Code, 27.7K Data, 129.0K Total 1453 Debug Version: 198.6K Code, 80.9K Data, 279.5K Total 1454 1455 1456 2) iASL Compiler/Disassembler and Tools: 1457 1458 iASL: Improved the compile-time typechecking for operands of many of the 1459 ASL operators: 1460 1461 -- Added an option to disable compiler operand/operator typechecking (- 1462 ot). 1463 1464 -- For the following operators, the TermArg operands are now validated 1465 when possible to be Integer data objects: BankField, OperationRegion, 1466 DataTableRegion, Buffer, and Package. 1467 1468 -- Store (Source, Target): Both the source and target operands are 1469 resolved and checked that the operands are both legal. For example, 1470 neither operand can be a non-data object such as a Device, Mutex, 1471 ThermalZone, etc. Note, as per the ACPI specification, the CopyObject 1472 operator can be used to store an object to any type of target object. 1473 1474 -- Store (Source, Target): If the source is a Package object, the target 1475 must be a Package object, LocalX, ArgX, or Debug. Likewise, if the target 1476 is a Package, the source must also be a Package. 1477 1478 -- Store (Source, Target): A warning is issued if the source and target 1479 resolve to the identical named object. 1480 1481 -- Store (Source, <method invocation>): An error is generated for the 1482 target method invocation, as this construct is not supported by the AML 1483 interpreter. 1484 1485 -- For all ASL math and logic operators, the target operand must be a 1486 data object (Integer, String, Buffer, LocalX, ArgX, or Debug). This 1487 includes the function return value also. 1488 1489 -- External declarations are also included in the typechecking where 1490 possible. External objects defined using the UnknownObj keyword cannot be 1491 typechecked, however. 1492 1493 iASL and Disassembler: Added symbolic (ASL+) support for the ASL Index 1494 operator: 1495 - Legacy code: Index(PKG1, 3) 1496 - New ASL+ code: PKG1[3] 1497 This completes the ACPI 6.0 ASL+ support as it was the only operator not 1498 supported. 1499 1500 iASL: Fixed the file suffix for the preprocessor output file (.i). Two 1501 spaces were inadvertently appended to the filename, causing file access 1502 and deletion problems on some systems. 1503 1504 ASL Test Suite (ASLTS): Updated the master makefile to generate all 1505 possible compiler output files when building the test suite -- thus 1506 exercising these features of the compiler. These files are automatically 1507 deleted when the test suite exits. 1508 1509 1510 ---------------------------------------- 1511 18 August 2015. Summary of changes for version 20150818: 1512 1513 1) ACPICA kernel-resident subsystem: 1514 1515 Fix a regression for AcpiGetTableByIndex interface causing it to fail. Lv 1516 Zheng. ACPICA BZ 1186. 1517 1518 Completed development to ensure that the ACPICA Disassembler and Debugger 1519 are fully standalone components of ACPICA. Removed cross-component 1520 dependences. Lv Zheng. 1521 1522 The max-number-of-AML-loops is now runtime configurable (previously was 1523 compile-time only). This is essentially a loop timeout to force-abort 1524 infinite AML loops. ACPCIA BZ 1192. 1525 1526 Debugger: Cleanup output to dump ACPI names and namepaths without any 1527 trailing underscores. Lv Zheng. ACPICA BZ 1135. 1528 1529 Removed unnecessary conditional compilations across the Debugger and 1530 Disassembler components where entire modules could be left uncompiled. 1531 1532 The aapits test is deprecated and has been removed from the ACPICA git 1533 tree. The test has never been completed and has not been maintained, thus 1534 becoming rather useless. ACPICA BZ 1015, 794. 1535 1536 A batch of small changes to close bugzilla and other reports: 1537 - Remove duplicate code for _PLD processing. ACPICA BZ 1176. 1538 - Correctly cleanup after a ACPI table load failure. ACPICA BZ 1185. 1539 - iASL: Support POSIX yacc again in makefile. Jung-uk Kim. 1540 - ACPI table support: general cleanup and simplification. Lv Zheng, Bob 1541 Moore. 1542 - ACPI table support: fix for a buffer read overrun in AcpiTbFindTable. 1543 ACPICA BZ 1184. 1544 - Enhance parameter validation for DataTableRegion and LoadTable ASL/AML 1545 operators. 1546 - Debugger: Split debugger initialization/termination interfaces. Lv 1547 Zheng. 1548 - AcpiExec: Emit OemTableId for SSDTs during the load phase for table 1549 identification. 1550 - AcpiExec: Add debug message during _REG method phase during table 1551 load/init. 1552 - AcpiNames: Fix a regression where some output was missing and no longer 1553 emitted. 1554 - Debugger: General cleanup and simplification. Lv Zheng. 1555 - Disassembler: Cleanup use of several global option variables. Lv Zheng. 1556 1557 Example Code and Data Size: These are the sizes for the OS-independent 1558 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1559 debug version of the code includes the debug output trace mechanism and 1560 has a much larger code and data size. 1561 1562 Current Release: 1563 Non-Debug Version: 101.3K Code, 27.7K Data, 129.0K Total 1564 Debug Version: 198.6K Code, 80.9K Data, 279.5K Total 1565 Previous Release: 1566 Non-Debug Version: 100.9K Code, 24.5K Data, 125.4K Total 1567 Debug Version: 197.8K Code, 81.5K Data, 279.3K Total 1568 1569 1570 2) iASL Compiler/Disassembler and Tools: 1571 1572 AcpiExec: Fixed a problem where any more than 32 ACPI tables in the XSDT 1573 were not handled properly and caused load errors. Now, properly invoke 1574 and use the ACPICA auto-reallocate mechanism for ACPI table data 1575 structures. ACPICA BZ 1188 1576 1577 AcpiNames: Add command-line wildcard support for ACPI table files. ACPICA 1578 BZ 1190. 1579 1580 AcpiExec and AcpiNames: Add -l option to load ACPI tables only. For 1581 AcpiExec, this means that no control methods (like _REG/_INI/_STA) are 1582 executed during initialization. ACPICA BZ 1187, 1189. 1583 1584 iASL/Disassembler: Implemented a prototype "listing" mode that emits AML 1585 that corresponds to each disassembled ASL statement, to simplify 1586 debugging. ACPICA BZ 1191. 1587 1588 Debugger: Add option to the "objects" command to display a summary of the 1589 current namespace objects (Object type and count). This is displayed if 1590 the command is entered with no arguments. 1591 1592 AcpiNames: Add -x option to specify debug level, similar to AcpiExec. 1593 1594 1595 ---------------------------------------- 1596 17 July 2015. Summary of changes for version 20150717: 1597 1598 1) ACPICA kernel-resident subsystem: 1599 1600 Improved the partitioning between the Debugger and Disassembler 1601 components. This allows the Debugger to be used standalone within kernel 1602 code without the Disassembler (which is used for single stepping also). 1603 This renames and moves one file, dmobject.c to dbobject.c. Lv Zheng. 1604 1605 Debugger: Implemented a new command to trace the execution of control 1606 methods (Trace). This is especially useful for the in-kernel version of 1607 the debugger when file I/O may not be available for method trace output. 1608 See the ACPICA reference for more information. Lv Zheng. 1609 1610 Moved all C library prototypes (used for the local versions of these 1611 functions when requested) to a new header, acclib.h 1612 Cleaned up the use of non-ANSI C library functions. These functions are 1613 implemented locally in ACPICA. Moved all such functions to a common 1614 source file, utnonansi.c 1615 1616 Debugger: Fixed a problem with the "!!" command (get last command 1617 executed) where the debugger could enter an infinite loop and eventually 1618 crash. 1619 1620 Removed the use of local macros that were used for some of the standard C 1621 library functions to automatically cast input parameters. This mostly 1622 affected the is* functions where the input parameter is defined to be an 1623 int. This required a few modifications to the main ACPICA source code to 1624 provide casting for these functions and eliminate possible compiler 1625 warnings for these parameters. 1626 1627 Across the source code, added additional status/error checking to resolve 1628 issues discovered by static source code analysis tools such as Coverity. 1629 1630 Example Code and Data Size: These are the sizes for the OS-independent 1631 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1632 debug version of the code includes the debug output trace mechanism and 1633 has a much larger code and data size. 1634 1635 Current Release: 1636 Non-Debug Version: 100.9K Code, 24.5K Data, 125.4K Total 1637 Debug Version: 197.8K Code, 81.5K Data, 279.3K Total 1638 Previous Release: 1639 Non-Debug Version: 100.6K Code, 27.6K Data, 128.2K Total 1640 Debug Version: 196.2K Code, 81.0K Data, 277.2K Total 1641 1642 1643 2) iASL Compiler/Disassembler and Tools: 1644 1645 iASL: Fixed a regression where the device map file feature no longer 1646 worked properly when used in conjunction with the disassembler. It only 1647 worked properly with the compiler itself. 1648 1649 iASL: Implemented a new warning for method LocalX variables that are set 1650 but never used (similar to a C compiler such as gcc). This also applies 1651 to ArgX variables that are not defined by the parent method, and are 1652 instead (legally) used as local variables. 1653 1654 iASL/Preprocessor: Finished the pass-through of line numbers from the 1655 preprocessor to the compiler. This ensures that compiler errors/warnings 1656 have the correct original line numbers and filenames, regardless of any 1657 #include files. 1658 1659 iASL/Preprocessor: Fixed a couple of issues with comment handling and the 1660 pass-through of comments to the preprocessor output file (which becomes 1661 the compiler input file). Also fixed a problem with // comments that 1662 appear after a math expression. 1663 1664 iASL: Added support for the TCPA server table to the table compiler and 1665 template generator. (The client table was already previously supported) 1666 1667 iASL/Preprocessor: Added a permanent #define of the symbol "__IASL__" to 1668 identify the iASL compiler. 1669 1670 Cleaned up the use of the macros NEGATIVE and POSITIVE which were defined 1671 multiple times. The new names are ACPI_SIGN_NEGATIVE and 1672 ACPI_SIGN_POSITIVE. 1673 1674 AcpiHelp: Update to expand help messages for the iASL preprocessor 1675 directives. 1676 1677 1678 ---------------------------------------- 1679 19 June 2015. Summary of changes for version 20150619: 1680 1681 Two regressions in version 20150616 have been addressed: 1682 1683 Fixes some problems/issues with the C library macro removal (ACPI_STRLEN, 1684 etc.) This update changes ACPICA to only use the standard headers for 1685 functions, or the prototypes for the local versions of the C library 1686 functions. Across the source code, this required some additional casts 1687 for some Clib invocations for portability. Moved all local prototypes to 1688 a new file, acclib.h 1689 1690 Fixes several problems with recent changes to the handling of the FACS 1691 table that could cause some systems not to boot. 1692 1693 1694 ---------------------------------------- 1695 16 June 2015. Summary of changes for version 20150616: 1696 1697 1698 1) ACPICA kernel-resident subsystem: 1699 1700 Across the entire ACPICA source code base, the various macros for the C 1701 library functions (such as ACPI_STRLEN, etc.) have been removed and 1702 replaced by the standard C library names (strlen, etc.) The original 1703 purpose for these macros is no longer applicable. This simplification 1704 reduces the number of macros used in the ACPICA source code 1705 significantly, improving readability and maintainability. 1706 1707 Implemented support for a new ACPI table, the OSDT. This table, the 1708 "override" SDT, can be loaded directly by the host OS at boot time. It 1709 enables the replacement of existing namespace objects that were installed 1710 via the DSDT and/or SSDTs. The primary purpose for this is to replace 1711 buggy or incorrect ASL/AML code obtained via the BIOS. The OSDT is slated 1712 for inclusion in a future version of the ACPI Specification. Lv Zheng/Bob 1713 Moore. 1714 1715 Added support for systems with (improperly) two FACS tables -- a "32-bit" 1716 table (via FADT 32-bit legacy field) and a "64-bit" table (via the 64-bit 1717 X field). This change will support both automatically. There continues to 1718 be systems found with this issue. This support requires a change to the 1719 AcpiSetFirmwareWakingVector interface. Also, a public global variable has 1720 been added to allow the host to select which FACS is desired 1721 (AcpiGbl_Use32BitFacsAddresses). See the ACPICA reference for more 1722 details Lv Zheng. 1723 1724 Added a new feature to allow for systems that do not contain an FACS. 1725 Although this is already supported on hardware-reduced platforms, the 1726 feature has been extended for all platforms. The reasoning is that we do 1727 not want to abort the entire ACPICA initialization just because the 1728 system is seriously buggy and has no FACS. 1729 1730 Fixed a problem where the GUID strings for NFIT tables (in acuuid.h) were 1731 not correctly transcribed from the ACPI specification in ACPICA version 1732 20150515. 1733 1734 Implemented support for the _CLS object in the AcpiGetObjectInfo external 1735 interface. 1736 1737 Updated the definitions of the TCPA and TPM2 ACPI tables to the more 1738 recent TCG ACPI Specification, December 14, 2014. Table disassembler and 1739 compiler also updated. Note: The TCPA "server" table is not supported by 1740 the disassembler/table-compiler at this time. 1741 1742 ACPI 6.0: Added definitions for the new GIC version field in the MADT. 1743 1744 Example Code and Data Size: These are the sizes for the OS-independent 1745 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1746 debug version of the code includes the debug output trace mechanism and 1747 has a much larger code and data size. 1748 1749 Current Release: 1750 Non-Debug Version: 100.6K Code, 27.6K Data, 128.2K Total 1751 Debug Version: 196.2K Code, 81.0K Data, 277.2K Total 1752 Previous Release: 1753 Non-Debug Version: 99.9K Code, 27.5K Data, 127.4K Total 1754 Debug Version: 195.2K Code, 80.8K Data, 276.0K Total 1755 1756 1757 2) iASL Compiler/Disassembler and Tools: 1758 1759 Disassembler: Fixed a problem with the new symbolic operator disassembler 1760 where incorrect ASL code could be emitted in some cases for the "non- 1761 commutative" operators -- Subtract, Divide, Modulo, ShiftLeft, and 1762 ShiftRight. The actual problem cases seem to be rather unusual in common 1763 ASL code, however. David Box. 1764 1765 Modified the linux version of acpidump to obtain ACPI tables from not 1766 just /dev/mem (which may not exist) and /sys/firmware/acpi/tables. Lv 1767 Zheng. 1768 1769 iASL: Fixed a problem where the user preprocessor output file (.i) 1770 contained extra data that was not expected. The compiler was using this 1771 file as a temporary file and passed through #line directives in order to 1772 keep compiler error messages in sync with the input file and line number 1773 across multiple include files. The (.i) is no longer a temporary file as 1774 the compiler uses a new, different file for the original purpose. 1775 1776 iASL: Fixed a problem where comments within the original ASL source code 1777 file were not passed through to the preprocessor output file, nor any 1778 listing files. 1779 1780 iASL: Fixed some issues for the handling of the "#include" preprocessor 1781 directive and the similar (but not the same) "Include" ASL operator. 1782 1783 iASL: Add support for the new OSDT in both the disassembler and compiler. 1784 1785 iASL: Fixed a problem with the constant folding support where a Buffer 1786 object could be incorrectly generated (incorrectly formed) during a 1787 conversion to a Store() operator. 1788 1789 AcpiHelp: Updated for new NFIT GUIDs, "External" AML opcode, and new 1790 description text for the _REV predefined name. _REV now permanently 1791 returns 2, as per the ACPI 6.0 specification. 1792 1793 Debugger: Enhanced the output of the Debug ASL object for references 1794 produced by the Index operator. For Buffers and strings, only output the 1795 actual byte pointed to by the index. For packages, only print the single 1796 package element decoded by the index. Previously, the entire 1797 buffer/string/package was emitted. 1798 1799 iASL/Table-compiler: Fixed a regression where the "generic" data types 1800 were no longer recognized, causing errors. 1801 1802 1803 ---------------------------------------- 1804 15 May 2015. Summary of changes for version 20150515: 1805 1806 This release implements most of ACPI 6.0 as described below. 1807 1808 1) ACPICA kernel-resident subsystem: 1809 1810 Implemented runtime argument checking and return value checking for all 1811 new ACPI 6.0 predefined names. This includes: _BTH, _CR3, _DSD, _LPI, 1812 _MTL, _PRR, _RDI, _RST, _TFP, _TSN. 1813 1814 Example Code and Data Size: These are the sizes for the OS-independent 1815 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1816 debug version of the code includes the debug output trace mechanism and 1817 has a much larger code and data size. 1818 1819 Current Release: 1820 Non-Debug Version: 99.9K Code, 27.5K Data, 127.4K Total 1821 Debug Version: 195.2K Code, 80.8K Data, 276.0K Total 1822 Previous Release: 1823 Non-Debug Version: 99.1K Code, 27.3K Data, 126.4K Total 1824 Debug Version: 192.8K Code, 79.9K Data, 272.7K Total 1825 1826 1827 2) iASL Compiler/Disassembler and Tools: 1828 1829 iASL compiler: Added compile-time support for all new ACPI 6.0 predefined 1830 names (argument count validation and return value typechecking.) 1831 1832 iASL disassembler and table compiler: implemented support for all new 1833 ACPI 6.0 tables. This includes: DRTM, IORT, LPIT, NFIT, STAO, WPBT, XENV. 1834 1835 iASL disassembler and table compiler: Added ACPI 6.0 changes to existing 1836 tables: FADT, MADT. 1837 1838 iASL preprocessor: Added a new directive to enable inclusion of binary 1839 blobs into ASL code. The new directive is #includebuffer. It takes a 1840 binary file as input and emits a named ascii buffer object into the ASL 1841 code. 1842 1843 AcpiHelp: Added support for all new ACPI 6.0 predefined names. 1844 1845 AcpiHelp: Added a new option, -d, to display all iASL preprocessor 1846 directives. 1847 1848 AcpiHelp: Added a new option, -t, to display all known/supported ACPI 1849 tables. 1850 1851 1852 ---------------------------------------- 1853 10 April 2015. Summary of changes for version 20150410: 1854 1855 Reverted a change introduced in version 20150408 that caused 1856 a regression in the disassembler where incorrect operator 1857 symbols could be emitted. 1858 1859 1860 ---------------------------------------- 1861 08 April 2015. Summary of changes for version 20150408: 1862 1863 1864 1) ACPICA kernel-resident subsystem: 1865 1866 Permanently set the return value for the _REV predefined name. It now 1867 returns 2 (was 5). This matches other ACPI implementations. _REV will be 1868 deprecated in the future, and is now defined to be 1 for ACPI 1.0, and 2 1869 for ACPI 2.0 and later. It should never be used to differentiate or 1870 identify operating systems. 1871 1872 Added the "Windows 2015" string to the _OSI support. ACPICA will now 1873 return TRUE to a query with this string. 1874 1875 Fixed several issues with the local version of the printf function. 1876 1877 Added the C99 compiler option (-std=c99) to the Unix makefiles. 1878 1879 Current Release: 1880 Non-Debug Version: 99.9K Code, 27.4K Data, 127.3K Total 1881 Debug Version: 195.2K Code, 80.7K Data, 275.9K Total 1882 Previous Release: 1883 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total 1884 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total 1885 1886 1887 2) iASL Compiler/Disassembler and Tools: 1888 1889 iASL: Implemented an enhancement to the constant folding feature to 1890 transform the parse tree to a simple Store operation whenever possible: 1891 Add (2, 3, X) ==> is converted to: Store (5, X) 1892 X = 2 + 3 ==> is converted to: Store (5, X) 1893 1894 Updated support for the SLIC table (Software Licensing Description Table) 1895 in both the Data Table compiler and the disassembler. The SLIC table 1896 support now conforms to "Microsoft Software Licensing Tables (SLIC and 1897 MSDM). November 29, 2011. Copyright 2011 Microsoft". Note: Any SLIC data 1898 following the ACPI header is now defined to be "Proprietary Data", and as 1899 such, can only be entered or displayed as a hex data block. 1900 1901 Implemented full support for the MSDM table as described in the document 1902 above. Note: The format of MSDM is similar to SLIC. Any MSDM data 1903 following the ACPI header is defined to be "Proprietary Data", and can 1904 only be entered or displayed as a hex data block. 1905 1906 Implemented the -Pn option for the iASL Table Compiler (was only 1907 implemented for the ASL compiler). This option disables the iASL 1908 preprocessor. 1909 1910 Disassembler: For disassembly of Data Tables, added a comment field 1911 around the Ascii equivalent data that is emitted as part of the "Raw 1912 Table Data" block. This prevents the iASL Preprocessor from possible 1913 confusion if/when the table is compiled. 1914 1915 Disassembler: Added an option (-df) to force the disassembler to assume 1916 that the table being disassembled contains valid AML. This feature is 1917 useful for disassembling AML files that contain ACPI signatures other 1918 than DSDT or SSDT (such as OEMx or other signatures). 1919 1920 Changes for the EFI version of the tools: 1921 1) Fixed a build error/issue 1922 2) Fixed a cast warning 1923 1924 iASL: Fixed a path issue with the __FILE__ operator by making the 1925 directory prefix optional within the internal SplitInputFilename 1926 function. 1927 1928 Debugger: Removed some unused global variables. 1929 1930 Tests: Updated the makefile for proper generation of the AAPITS suite. 1931 1932 1933 ---------------------------------------- 1934 04 February 2015. Summary of changes for version 20150204: 1935 1936 ACPICA kernel-resident subsystem: 1937 1938 Updated all ACPICA copyrights and signons to 2014. Added the 2014 1939 copyright to all module headers and signons, including the standard Linux 1940 header. This affects virtually every file in the ACPICA core subsystem, 1941 iASL compiler, all ACPICA utilities, and the test suites. 1942 1943 Events: Introduce ACPI_GPE_DISPATCH_RAW_HANDLER to fix GPE storm issues. 1944 A raw gpe handling mechanism was created to allow better handling of GPE 1945 storms that aren't easily managed by the normal handler. The raw handler 1946 allows disabling/renabling of the the GPE so that interrupt storms can be 1947 avoided in cases where events cannot be timely serviced. In this 1948 scenario, handlers should use the AcpiSetGpe() API to disable/enable the 1949 GPE. This API will leave the reference counts undisturbed, thereby 1950 preventing unintentional clearing of the GPE when the intent in only to 1951 temporarily disable it. Raw handlers allow enabling and disabling of a 1952 GPE by removing GPE register locking. As such, raw handlers much provide 1953 their own locks while using GPE API's to protect access to GPE data 1954 structures. 1955 Lv Zheng 1956 1957 Events: Always modify GPE registers under the GPE lock. 1958 Applies GPE lock around AcpiFinishGpe() to protect access to GPE register 1959 values. Reported as bug by joe.liu (a] apple.com. 1960 1961 Unix makefiles: Separate option to disable optimizations and 1962 _FORTIFY_SOURCE. This change removes the _FORTIFY_SOURCE flag from the 1963 NOOPT disable option and creates a separate flag (NOFORTIFY) for this 1964 purpose. Some toolchains may define _FORTIFY_SOURCE which leads redefined 1965 errors when building ACPICA. This allows disabling the option without 1966 also having to disable optimazations. 1967 David Box 1968 1969 Current Release: 1970 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total 1971 Debug Version: 199.2K Code, 82.4K Data, 281.6K Total 1972 1973 -- 1974 -------------------------------------- 1975 07 November 2014. Summary of changes for version 20141107: 1976 1977 This release is available at https://acpica.org/downloads 1978 1979 This release introduces and implements language extensions to ASL that 1980 provide support for symbolic ("C-style") operators and expressions. These 1981 language extensions are known collectively as ASL+. 1982 1983 1984 1) iASL Compiler/Disassembler and Tools: 1985 1986 Disassembler: Fixed a problem with disassembly of the UartSerialBus 1987 macro. Changed "StopBitsNone" to the correct "StopBitsZero". David E. 1988 Box. 1989 1990 Disassembler: Fixed the Unicode macro support to add escape sequences. 1991 All non-printable ASCII values are emitted as escape sequences, as well 1992 as the standard escapes for quote and backslash. Ensures that the 1993 disassembled macro can be correctly recompiled. 1994 1995 iASL: Added Printf/Fprintf macros for formatted output. These macros are 1996 translated to existing AML Concatenate and Store operations. Printf 1997 writes to the ASL Debug object. Fprintf allows the specification of an 1998 ASL name as the target. Only a single format specifier is required, %o, 1999 since the AML interpreter dynamically converts objects to the required 2000 type. David E. Box. 2001 2002 (old) Store (Concatenate (Concatenate (Concatenate (Concatenate 2003 (Concatenate (Concatenate (Concatenate ("", Arg0), 2004 ": Unexpected value for "), Arg1), ", "), Arg2), 2005 " at line "), Arg3), Debug) 2006 2007 (new) Printf ("%o: Unexpected value for %o, %o at line %o", 2008 Arg0, Arg1, Arg2, Arg3) 2009 2010 (old) Store (Concatenate (Concatenate (Concatenate (Concatenate 2011 ("", Arg1), ": "), Arg0), " Successful"), STR1) 2012 2013 (new) Fprintf (STR1, "%o: %o Successful", Arg1, Arg0) 2014 2015 iASL: Added debug options (-bp, -bt) to dynamically prune levels of the 2016 ASL parse tree before the AML code is generated. This allows blocks of 2017 ASL code to be removed in order to help locate and identify problem 2018 devices and/or code. David E. Box. 2019 2020 AcpiExec: Added support (-fi) for an optional namespace object 2021 initialization file. This file specifies initial values for namespace 2022 objects as necessary for debugging and testing different ASL code paths 2023 that may be taken as a result of BIOS options. 2024 2025 2026 2) Overview of symbolic operator support for ASL (ASL+) 2027 ------------------------------------------------------- 2028 2029 As an extension to the ASL language, iASL implements support for symbolic 2030 (C-style) operators for math and logical expressions. This can greatly 2031 simplify ASL code as well as improve both readability and 2032 maintainability. These language extensions can exist concurrently with 2033 all legacy ASL code and expressions. 2034 2035 The symbolic extensions are 100% compatible with existing AML 2036 interpreters, since no new AML opcodes are created. To implement the 2037 extensions, the iASL compiler transforms the symbolic expressions into 2038 the legacy ASL/AML equivalents at compile time. 2039 2040 Full symbolic expressions are supported, along with the standard C 2041 precedence and associativity rules. 2042 2043 Full disassembler support for the symbolic expressions is provided, and 2044 creates an automatic migration path for existing ASL code to ASL+ code 2045 via the disassembly process. By default, the disassembler now emits ASL+ 2046 code with symbolic expressions. An option (-dl) is provided to force the 2047 disassembler to emit legacy ASL code if desired. 2048 2049 Below is the complete list of the currently supported symbolic operators 2050 with examples. See the iASL User Guide for additional information. 2051 2052 2053 ASL+ Syntax Legacy ASL Equivalent 2054 ----------- --------------------- 2055 2056 // Math operators 2057 2058 Z = X + Y Add (X, Y, Z) 2059 Z = X - Y Subtract (X, Y, Z) 2060 Z = X * Y Multiply (X, Y, Z) 2061 Z = X / Y Divide (X, Y, , Z) 2062 Z = X % Y Mod (X, Y, Z) 2063 Z = X << Y ShiftLeft (X, Y, Z) 2064 Z = X >> Y ShiftRight (X, Y, Z) 2065 Z = X & Y And (X, Y, Z) 2066 Z = X | Y Or (X, Y, Z) 2067 Z = X ^ Y Xor (X, Y, Z) 2068 Z = ~X Not (X, Z) 2069 X++ Increment (X) 2070 X-- Decrement (X) 2071 2072 // Logical operators 2073 2074 (X == Y) LEqual (X, Y) 2075 (X != Y) LNotEqual (X, Y) 2076 (X < Y) LLess (X, Y) 2077 (X > Y) LGreater (X, Y) 2078 (X <= Y) LLessEqual (X, Y) 2079 (X >= Y) LGreaterEqual (X, Y) 2080 (X && Y) LAnd (X, Y) 2081 (X || Y) LOr (X, Y) 2082 (!X) LNot (X) 2083 2084 // Assignment and compound assignment operations 2085 2086 X = Y Store (Y, X) 2087 X += Y Add (X, Y, X) 2088 X -= Y Subtract (X, Y, X) 2089 X *= Y Multiply (X, Y, X) 2090 X /= Y Divide (X, Y, , X) 2091 X %= Y Mod (X, Y, X) 2092 X <<= Y ShiftLeft (X, Y, X) 2093 X >>= Y ShiftRight (X, Y, X) 2094 X &= Y And (X, Y, X) 2095 X |= Y Or (X, Y, X) 2096 X ^= Y Xor (X, Y, X) 2097 2098 2099 3) ASL+ Examples: 2100 ----------------- 2101 2102 Legacy ASL: 2103 If (LOr (LOr (LEqual (And (R510, 0x03FB), 0x02E0), LEqual ( 2104 And (R520, 0x03FB), 0x02E0)), LOr (LEqual (And (R530, 2105 0x03FB), 2106 0x02E0), LEqual (And (R540, 0x03FB), 0x02E0)))) 2107 { 2108 And (MEMB, 0xFFFFFFF0, SRMB) 2109 Store (MEMB, Local2) 2110 Store (PDBM, Local1) 2111 And (PDBM, 0xFFFFFFFFFFFFFFF9, PDBM) 2112 Store (SRMB, MEMB) 2113 Or (PDBM, 0x02, PDBM) 2114 } 2115 2116 ASL+ version: 2117 If (((R510 & 0x03FB) == 0x02E0) || 2118 ((R520 & 0x03FB) == 0x02E0) || 2119 ((R530 & 0x03FB) == 0x02E0) || 2120 ((R540 & 0x03FB) == 0x02E0)) 2121 { 2122 SRMB = (MEMB & 0xFFFFFFF0) 2123 Local2 = MEMB 2124 Local1 = PDBM 2125 PDBM &= 0xFFFFFFFFFFFFFFF9 2126 MEMB = SRMB 2127 PDBM |= 0x02 2128 } 2129 2130 Legacy ASL: 2131 Store (0x1234, Local1) 2132 Multiply (Add (Add (Local1, TEST), 0x20), Local2, Local3) 2133 Multiply (Local2, Add (Add (Local1, TEST), 0x20), Local3) 2134 Add (Local1, Add (TEST, Multiply (0x20, Local2)), Local3) 2135 Store (Index (PKG1, 0x03), Local6) 2136 Store (Add (Local3, Local2), Debug) 2137 Add (Local1, 0x0F, Local2) 2138 Add (Local1, Multiply (Local2, Local3), Local2) 2139 Multiply (Add (Add (Local1, TEST), 0x20), ToBCD (Local1), Local3) 2140 2141 ASL+ version: 2142 Local1 = 0x1234 2143 Local3 = (((Local1 + TEST) + 0x20) * Local2) 2144 Local3 = (Local2 * ((Local1 + TEST) + 0x20)) 2145 Local3 = (Local1 + (TEST + (0x20 * Local2))) 2146 Local6 = Index (PKG1, 0x03) 2147 Debug = (Local3 + Local2) 2148 Local2 = (Local1 + 0x0F) 2149 Local2 = (Local1 + (Local2 * Local3)) 2150 Local3 = (((Local1 + TEST) + 0x20) * ToBCD (Local1)) 2151 2152 2153 ---------------------------------------- 2154 26 September 2014. Summary of changes for version 20140926: 2155 2156 1) ACPICA kernel-resident subsystem: 2157 2158 Updated the GPIO operation region handler interface (GeneralPurposeIo). 2159 In order to support GPIO Connection objects with multiple pins, along 2160 with the related Field objects, the following changes to the interface 2161 have been made: The Address is now defined to be the offset in bits of 2162 the field unit from the previous invocation of a Connection. It can be 2163 viewed as a "Pin Number Index" into the connection resource descriptor. 2164 The BitWidth is the exact bit width of the field. It is usually one bit, 2165 but not always. See the ACPICA reference guide (section 8.8.6.2.1) for 2166 additional information and examples. 2167 2168 GPE support: During ACPICA/GPE initialization, ensure that all GPEs with 2169 corresponding _Lxx/_Exx methods are disabled (they may have been enabled 2170 by the firmware), so that they cannot fire until they are enabled via 2171 AcpiUpdateAllGpes. Rafael J. Wysocki. 2172 2173 Added a new return flag for the Event/GPE status interfaces -- 2174 AcpiGetEventStatus and AcpiGetGpeStatus. The new 2175 ACPI_EVENT_FLAGS_HAS_HANDLER flag is used to indicate that the event or 2176 GPE currently has a handler associated with it, and can thus actually 2177 affect the system. Lv Zheng. 2178 2179 Example Code and Data Size: These are the sizes for the OS-independent 2180 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2181 debug version of the code includes the debug output trace mechanism and 2182 has a much larger code and data size. 2183 2184 Current Release: 2185 Non-Debug Version: 99.1K Code, 27.3K Data, 126.4K Total 2186 Debug Version: 192.8K Code, 79.9K Data, 272.7K Total 2187 Previous Release: 2188 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total 2189 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total 2190 2191 2) iASL Compiler/Disassembler and Tools: 2192 2193 iASL: Fixed a memory allocation/free regression introduced in 20140828 2194 that could cause the compiler to crash. This was introduced inadvertently 2195 during the effort to eliminate compiler memory leaks. ACPICA BZ 1111, 2196 1113. 2197 2198 iASL: Removed two error messages that have been found to create false 2199 positives, until they can be fixed and fully validated (ACPICA BZ 1112): 2200 1) Illegal forward reference within a method 2201 2) Illegal reference across two methods 2202 2203 iASL: Implemented a new option (-lm) to create a hardware mapping file 2204 that summarizes all GPIO, I2C, SPI, and UART connections. This option 2205 works for both the compiler and disassembler. See the iASL compiler user 2206 guide for additional information and examples (section 6.4.6). 2207 2208 AcpiDump: Added support for the version 1 (ACPI 1.0) RSDP in addition to 2209 version 2. This corrects the AE_BAD_HEADER exception seen on systems with 2210 a version 1 RSDP. Lv Zheng ACPICA BZ 1097. 2211 2212 AcpiExec: For Unix versions, don't attempt to put STDIN into raw mode 2213 unless STDIN is actually a terminal. Assists with batch-mode processing. 2214 ACPICA BZ 1114. 2215 2216 Disassembler/AcpiHelp: Added another large group of recognized _HID 2217 values. 2218 2219 2220 ---------------------------------------- 2221 28 August 2014. Summary of changes for version 20140828: 2222 2223 1) ACPICA kernel-resident subsystem: 2224 2225 Fixed a problem related to the internal use of the Timer() operator where 2226 a 64-bit divide could cause an attempted link to a double-precision math 2227 library. This divide is not actually necessary, so the code was 2228 restructured to eliminate it. Lv Zheng. 2229 2230 ACPI 5.1: Added support for the runtime validation of the _DSD package 2231 (similar to the iASL support). 2232 2233 ACPI 5.1/Headers: Added support for the GICC affinity subtable to the 2234 SRAT table. Hanjun Guo <hanjun.guo (a] linaro.org>. 2235 2236 Example Code and Data Size: These are the sizes for the OS-independent 2237 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2238 debug version of the code includes the debug output trace mechanism and 2239 has a much larger code and data size. 2240 2241 Current Release: 2242 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total 2243 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total 2244 Previous Release: 2245 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total1 2246 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total 2247 2248 2) iASL Compiler/Disassembler and Tools: 2249 2250 AcpiExec: Fixed a problem on unix systems where the original terminal 2251 state was not always properly restored upon exit. Seen when using the -v 2252 option. ACPICA BZ 1104. 2253 2254 iASL: Fixed a problem with the validation of the ranges/length within the 2255 Memory24 resource descriptor. There was a boundary condition when the 2256 range was equal to the (length -1) caused by the fact that these values 2257 are defined in 256-byte blocks, not bytes. ACPICA BZ 1098 2258 2259 Disassembler: Fixed a problem with the GpioInt descriptor interrupt 2260 polarity 2261 flags. The flags are actually 2 bits, not 1, and the "ActiveBoth" keyword 2262 is 2263 now supported properly. 2264 2265 ACPI 5.1: Added the GICC affinity subtable to the SRAT table. Supported 2266 in the disassembler, data table compiler, and table template generator. 2267 2268 iASL: Added a requirement for Device() objects that one of either a _HID 2269 or _ADR must exist within the scope of a Device, as per the ACPI 2270 specification. Remove a similar requirement that was incorrectly in place 2271 for the _DSD object. 2272 2273 iASL: Added error detection for illegal named references within control 2274 methods that would cause runtime failures. Now trapped as errors are: 1) 2275 References to objects within a non-parent control method. 2) Forward 2276 references (within a method) -- for control methods, AML interpreters use 2277 a one-pass parse of control methods. ACPICA BZ 1008. 2278 2279 iASL: Added error checking for dependencies related to the _PSx power 2280 methods. ACPICA BZ 1029. 2281 1) For _PS0, one of these must exist within the same scope: _PS1, _PS2, 2282 _PS3. 2283 2) For _PS1, _PS2, and PS3: A _PS0 object must exist within the same 2284 scope. 2285 2286 iASL and table compiler: Cleanup miscellaneous memory leaks by fully 2287 deploying the existing object and string caches and adding new caches for 2288 the table compiler. 2289 2290 iASL: Split the huge parser source file into multiple subfiles to improve 2291 manageability. Generation now requires the M4 macro preprocessor, which 2292 is part of the Bison distribution on both unix and windows platforms. 2293 2294 AcpiSrc: Fixed and removed all extraneous warnings generated during 2295 entire ACPICA source code scan and/or conversion. 2296 2297 2298 ---------------------------------------- 2299 2300 24 July 2014. Summary of changes for version 20140724: 2301 2302 The ACPI 5.1 specification has been released and is available at: 2303 http://uefi.org/specs/access 2304 2305 2306 0) ACPI 5.1 support in ACPICA: 2307 2308 ACPI 5.1 is fully supported in ACPICA as of this release. 2309 2310 New predefined names. Support includes iASL and runtime ACPICA 2311 validation. 2312 _CCA (Cache Coherency Attribute). 2313 _DSD (Device-Specific Data). David Box. 2314 2315 Modifications to existing ACPI tables. Support includes headers, iASL 2316 Data Table compiler, disassembler, and the template generator. 2317 FADT - New fields and flags. Graeme Gregory. 2318 GTDT - One new subtable and new fields. Tomasz Nowicki. 2319 MADT - Two new subtables. Tomasz Nowicki. 2320 PCCT - One new subtable. 2321 2322 Miscellaneous. 2323 New notification type for System Resource Affinity change events. 2324 2325 2326 1) ACPICA kernel-resident subsystem: 2327 2328 Fixed a regression introduced in 20140627 where a fault can happen during 2329 the deletion of Alias AML namespace objects. The problem affected both 2330 the core ACPICA and the ACPICA tools including iASL and AcpiExec. 2331 2332 Implemented a new GPE public interface, AcpiMarkGpeForWake. Provides a 2333 simple mechanism to enable wake GPEs that have no associated handler or 2334 control method. Rafael Wysocki. 2335 2336 Updated the AcpiEnableGpe interface to disallow the enable if there is no 2337 handler or control method associated with the particular GPE. This will 2338 help avoid meaningless GPEs and even GPE floods. Rafael Wysocki. 2339 2340 Updated GPE handling and dispatch by disabling the GPE before clearing 2341 the status bit for edge-triggered GPEs. Lv Zheng. 2342 2343 Added Timer() support to the AML Debug object. The current timer value is 2344 now displayed with each invocation of (Store to) the debug object to 2345 enable simple generation of execution times for AML code (method 2346 execution for example.) ACPICA BZ 1093. 2347 2348 Example Code and Data Size: These are the sizes for the OS-independent 2349 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2350 debug version of the code includes the debug output trace mechanism and 2351 has a much larger code and data size. 2352 2353 Current Release: 2354 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total 2355 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total 2356 Previous Release: 2357 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total 2358 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total 2359 2360 2361 2) iASL Compiler/Disassembler and Tools: 2362 2363 Fixed an issue with the recently added local printf implementation, 2364 concerning width/precision specifiers that could cause incorrect output. 2365 Lv Zheng. ACPICA BZ 1094. 2366 2367 Disassembler: Added support to detect buffers that contain UUIDs and 2368 disassemble them to an invocation of the ToUUID operator. Also emit 2369 commented descriptions of known ACPI-related UUIDs. 2370 2371 AcpiHelp: Added support to display known ACPI-related UUIDs. New option, 2372 -u. Adds three new files. 2373 2374 iASL: Update table compiler and disassembler for DMAR table changes that 2375 were introduced in September 2013. With assistance by David Woodhouse. 2376 2377 ---------------------------------------- 2378 27 June 2014. Summary of changes for version 20140627: 2379 2380 1) ACPICA kernel-resident subsystem: 2381 2382 Formatted Output: Implemented local versions of standard formatted output 2383 utilities such as printf, etc. Over time, it has been discovered that 2384 there are in fact many portability issues with printf, and the addition 2385 of this feature will fix/prevent these issues once and for all. Some 2386 known issues are summarized below: 2387 2388 1) Output of 64-bit values is not portable. For example, UINT64 is %ull 2389 for the Linux kernel and is %uI64 for some MSVC versions. 2390 2) Invoking printf consistently in a manner that is portable across both 2391 32-bit and 64-bit platforms is difficult at best in many situations. 2392 3) The output format for pointers varies from system to system (leading 2393 zeros especially), and leads to inconsistent output from ACPICA across 2394 platforms. 2395 4) Certain platform-specific printf formats may conflict with ACPICA use. 2396 5) If there is no local C library available, ACPICA now has local support 2397 for printf. 2398 2399 -- To address these printf issues in a complete manner, ACPICA now 2400 directly implements a small subset of printf format specifiers, only 2401 those that it requires. Adds a new file, utilities/utprint.c. Lv Zheng. 2402 2403 Implemented support for ACPICA generation within the EFI environment. 2404 Initially, the AcpiDump utility is supported in the UEFI shell 2405 environment. Lv Zheng. 2406 2407 Added a new external interface, AcpiLogError, to improve ACPICA 2408 portability. This allows the host to redirect error messages from the 2409 ACPICA utilities. Lv Zheng. 2410 2411 Added and deployed new OSL file I/O interfaces to improve ACPICA 2412 portability: 2413 AcpiOsOpenFile 2414 AcpiOsCloseFile 2415 AcpiOsReadFile 2416 AcpiOsWriteFile 2417 AcpiOsGetFileOffset 2418 AcpiOsSetFileOffset 2419 There are C library implementations of these functions in the new file 2420 service_layers/oslibcfs.c -- however, the functions can be implemented by 2421 the local host in any way necessary. Lv Zheng. 2422 2423 Implemented a mechanism to disable/enable ACPI table checksum validation 2424 at runtime. This can be useful when loading tables very early during OS 2425 initialization when it may not be possible to map the entire table in 2426 order to compute the checksum. Lv Zheng. 2427 2428 Fixed a buffer allocation issue for the Generic Serial Bus support. 2429 Originally, a fixed buffer length was used. This change allows for 2430 variable-length buffers based upon the protocol indicated by the field 2431 access attributes. Reported by Lan Tianyu. Lv Zheng. 2432 2433 Fixed a problem where an object detached from a namespace node was not 2434 properly terminated/cleared and could cause a circular list problem if 2435 reattached. ACPICA BZ 1063. David Box. 2436 2437 Fixed a possible recursive lock acquisition in hwregs.c. Rakib Mullick. 2438 2439 Fixed a possible memory leak in an error return path within the function 2440 AcpiUtCopyIobjectToIobject. ACPICA BZ 1087. Colin Ian King. 2441 2442 Example Code and Data Size: These are the sizes for the OS-independent 2443 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2444 debug version of the code includes the debug output trace mechanism and 2445 has a much larger code and data size. 2446 2447 Current Release: 2448 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total 2449 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total 2450 Previous Release: 2451 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total 2452 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total 2453 2454 2455 2) iASL Compiler/Disassembler and Tools: 2456 2457 Disassembler: Add dump of ASCII equivalent text within a comment at the 2458 end of each line of the output for the Buffer() ASL operator. 2459 2460 AcpiDump: Miscellaneous changes: 2461 Fixed repetitive table dump in -n mode. 2462 For older EFI platforms, use the ACPI 1.0 GUID during RSDP search if 2463 the ACPI 2.0 GUID fails. 2464 2465 iASL: Fixed a problem where the compiler could fault if incorrectly given 2466 an acpidump output file as input. ACPICA BZ 1088. David Box. 2467 2468 AcpiExec/AcpiNames: Fixed a problem where these utilities could fault if 2469 they are invoked without any arguments. 2470 2471 Debugger: Fixed a possible memory leak in an error return path. ACPICA BZ 2472 1086. Colin Ian King. 2473 2474 Disassembler: Cleaned up a block of code that extracts a parent Op 2475 object. Added a comment that explains that the parent is guaranteed to be 2476 valid in this case. ACPICA BZ 1069. 2477 2478 2479 ---------------------------------------- 2480 24 April 2014. Summary of changes for version 20140424: 2481 2482 1) ACPICA kernel-resident subsystem: 2483 2484 Implemented support to skip/ignore NULL address entries in the RSDT/XSDT. 2485 Some of these tables are known to contain a trailing NULL entry. Lv 2486 Zheng. 2487 2488 Removed an extraneous error message for the case where there are a large 2489 number of system GPEs (> 124). This was the "32-bit FADT register is too 2490 long to convert to GAS struct" message, which is irrelevant for GPEs 2491 since the GPEx_BLK_LEN fields of the FADT are always used instead of the 2492 (limited capacity) GAS bit length. Also, several changes to ensure proper 2493 support for GPE numbers > 255, where some "GPE number" fields were 8-bits 2494 internally. 2495 2496 Implemented and deployed additional configuration support for the public 2497 ACPICA external interfaces. Entire classes of interfaces can now be 2498 easily modified or configured out, replaced by stubbed inline functions 2499 by default. Lv Zheng. 2500 2501 Moved all public ACPICA runtime configuration globals to the public 2502 ACPICA external interface file for convenience. Also, removed some 2503 obsolete/unused globals. See the file acpixf.h. Lv Zheng. 2504 2505 Documentation: Added a new section to the ACPICA reference describing the 2506 maximum number of GPEs that can be supported by the FADT-defined GPEs in 2507 block zero and one. About 1200 total. See section 4.4.1 of the ACPICA 2508 reference. 2509 2510 Example Code and Data Size: These are the sizes for the OS-independent 2511 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2512 debug version of the code includes the debug output trace mechanism and 2513 has a much larger code and data size. 2514 2515 Current Release: 2516 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total 2517 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total 2518 Previous Release: 2519 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total 2520 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total 2521 2522 2523 2) iASL Compiler/Disassembler and Tools: 2524 2525 iASL and disassembler: Add full support for the LPIT table (Low Power 2526 Idle Table). Includes support in the disassembler, data table compiler, 2527 and template generator. 2528 2529 AcpiDump utility: 2530 1) Add option to force the use of the RSDT (over the XSDT). 2531 2) Improve validation of the RSDP signature (use 8 chars instead of 4). 2532 2533 iASL: Add check for predefined packages that are too large. For 2534 predefined names that contain subpackages, check if each subpackage is 2535 too large. (Check for too small already exists.) 2536 2537 Debugger: Updated the GPE command (which simulates a GPE by executing the 2538 GPE code paths in ACPICA). The GPE device is now optional, and defaults 2539 to the GPE 0/1 FADT-defined blocks. 2540 2541 Unix application OSL: Update line-editing support. Add additional error 2542 checking and take care not to reset terminal attributes on exit if they 2543 were never set. This should help guarantee that the terminal is always 2544 left in the previous state on program exit. 2545 2546 2547 ---------------------------------------- 2548 25 March 2014. Summary of changes for version 20140325: 2549 2550 1) ACPICA kernel-resident subsystem: 2551 2552 Updated the auto-serialize feature for control methods. This feature 2553 automatically serializes all methods that create named objects in order 2554 to prevent runtime errors. The update adds support to ignore the 2555 currently executing AML SyncLevel when invoking such a method, in order 2556 to prevent disruption of any existing SyncLevel priorities that may exist 2557 in the AML code. Although the use of SyncLevels is relatively rare, this 2558 change fixes a regression where an AE_AML_MUTEX_ORDER exception can 2559 appear on some machines starting with the 20140214 release. 2560 2561 Added a new external interface to allow the host to install ACPI tables 2562 very early, before the namespace is even created. AcpiInstallTable gives 2563 the host additional flexibility for ACPI table management. Tables can be 2564 installed directly by the host as if they had originally appeared in the 2565 XSDT/RSDT. Installed tables can be SSDTs or other ACPI data tables 2566 (anything except the DSDT and FACS). Adds a new file, tbdata.c, along 2567 with additional internal restructuring and cleanup. See the ACPICA 2568 Reference for interface details. Lv Zheng. 2569 2570 Added validation of the checksum for all incoming dynamically loaded 2571 tables (via external interfaces or via AML Load/LoadTable operators). Lv 2572 Zheng. 2573 2574 Updated the use of the AcpiOsWaitEventsComplete interface during Notify 2575 and GPE handler removal. Restructured calls to eliminate possible race 2576 conditions. Lv Zheng. 2577 2578 Added a warning for the use/execution of the ASL/AML Unload (table) 2579 operator. This will help detect and identify machines that use this 2580 operator if and when it is ever used. This operator has never been seen 2581 in the field and the usage model and possible side-effects of the drastic 2582 runtime action of a full table removal are unknown. 2583 2584 Reverted the use of #pragma push/pop which was introduced in the 20140214 2585 release. It appears that push and pop are not implemented by enough 2586 compilers to make the use of this feature feasible for ACPICA at this 2587 time. However, these operators may be deployed in a future ACPICA 2588 release. 2589 2590 Added the missing EXPORT_SYMBOL macros for the install and remove SCI 2591 handler interfaces. 2592 2593 Source code generation: 2594 1) Disabled the use of the "strchr" macro for the gcc-specific 2595 generation. For some versions of gcc, this macro can periodically expose 2596 a compiler bug which in turn causes compile-time error(s). 2597 2) Added support for PPC64 compilation. Colin Ian King. 2598 2599 Example Code and Data Size: These are the sizes for the OS-independent 2600 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2601 debug version of the code includes the debug output trace mechanism and 2602 has a much larger code and data size. 2603 2604 Current Release: 2605 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total 2606 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total 2607 Previous Release: 2608 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total 2609 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total 2610 2611 2612 2) iASL Compiler/Disassembler and Tools: 2613 2614 Disassembler: Added several new features to improve the readability of 2615 the resulting ASL code. Extra information is emitted within comment 2616 fields in the ASL code: 2617 1) Known _HID/_CID values are decoded to descriptive text. 2618 2) Standard values for the Notify() operator are decoded to descriptive 2619 text. 2620 3) Target operands are expanded to full pathnames (in a comment) when 2621 possible. 2622 2623 Disassembler: Miscellaneous updates for extern() handling: 2624 1) Abort compiler if file specified by -fe option does not exist. 2625 2) Silence unnecessary warnings about argument count mismatches. 2626 3) Update warning messages concerning unresolved method externals. 2627 4) Emit "UnknownObj" keyword for externals whose type cannot be 2628 determined. 2629 2630 AcpiHelp utility: 2631 1) Added the -a option to display both the ASL syntax and the AML 2632 encoding for an input ASL operator. This effectively displays all known 2633 information about an ASL operator with one AcpiHelp invocation. 2634 2) Added substring match support (similar to a wildcard) for the -i 2635 (_HID/PNP IDs) option. 2636 2637 iASL/Disassembler: Since this tool does not yet support execution on big- 2638 endian machines, added detection of endianness and an error message if 2639 execution is attempted on big-endian. Support for big-endian within iASL 2640 is a feature that is on the ACPICA to-be-done list. 2641 2642 AcpiBin utility: 2643 1) Remove option to extract binary files from an acpidump; this function 2644 is made obsolete by the AcpiXtract utility. 2645 2) General cleanup of open files and allocated buffers. 2646 2647 2648 ---------------------------------------- 2649 14 February 2014. Summary of changes for version 20140214: 2650 2651 1) ACPICA kernel-resident subsystem: 2652 2653 Implemented a new mechanism to proactively prevent problems with ill- 2654 behaved reentrant control methods that create named ACPI objects. This 2655 behavior is illegal as per the ACPI specification, but is nonetheless 2656 frequently seen in the field. Previously, this could lead to an 2657 AE_ALREADY_EXISTS exception if the method was actually entered by more 2658 than one thread. This new mechanism detects such methods at table load 2659 time and marks them "serialized" to prevent reentrancy. A new global 2660 option, AcpiGbl_AutoSerializeMethods, has been added to disable this 2661 feature if desired. This mechanism and global option obsoletes and 2662 supersedes the previous AcpiGbl_SerializeAllMethods option. 2663 2664 Added the "Windows 2013" string to the _OSI support. ACPICA will now 2665 respond TRUE to _OSI queries with this string. It is the stated policy of 2666 ACPICA to add new strings to the _OSI support as soon as possible after 2667 they are defined. See the full ACPICA _OSI policy which has been added to 2668 the utilities/utosi.c file. 2669 2670 Hardened/updated the _PRT return value auto-repair code: 2671 1) Do not abort the repair on a single subpackage failure, continue to 2672 check all subpackages. 2673 2) Add check for the minimum subpackage length (4). 2674 3) Properly handle extraneous NULL package elements. 2675 2676 Added support to avoid the possibility of infinite loops when traversing 2677 object linked lists. Never allow an infinite loop, even in the face of 2678 corrupted object lists. 2679 2680 ACPICA headers: Deployed the use of #pragma pack(push) and #pragma 2681 pack(pop) directives to ensure that the ACPICA headers are independent of 2682 compiler settings or other host headers. 2683 2684 Example Code and Data Size: These are the sizes for the OS-independent 2685 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2686 debug version of the code includes the debug output trace mechanism and 2687 has a much larger code and data size. 2688 2689 Current Release: 2690 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total 2691 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total 2692 Previous Release: 2693 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total 2694 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total 2695 2696 2697 2) iASL Compiler/Disassembler and Tools: 2698 2699 iASL/Table-compiler: Fixed a problem with support for the SPMI table. The 2700 first reserved field was incorrectly forced to have a value of zero. This 2701 change correctly forces the field to have a value of one. ACPICA BZ 1081. 2702 2703 Debugger: Added missing support for the "Extra" and "Data" subobjects 2704 when displaying object data. 2705 2706 Debugger: Added support to display entire object linked lists when 2707 displaying object data. 2708 2709 iASL: Removed the obsolete -g option to obtain ACPI tables from the 2710 Windows registry. This feature has been superseded by the acpidump 2711 utility. 2712 2713 2714 ---------------------------------------- 2715 14 January 2014. Summary of changes for version 20140114: 2716 2717 1) ACPICA kernel-resident subsystem: 2718 2719 Updated all ACPICA copyrights and signons to 2014. Added the 2014 2720 copyright to all module headers and signons, including the standard Linux 2721 header. This affects virtually every file in the ACPICA core subsystem, 2722 iASL compiler, all ACPICA utilities, and the test suites. 2723 2724 Improved parameter validation for AcpiInstallGpeBlock. Added the 2725 following checks: 2726 1) The incoming device handle refers to type ACPI_TYPE_DEVICE. 2727 2) There is not already a GPE block attached to the device. 2728 Likewise, with AcpiRemoveGpeBlock, ensure that the incoming object is a 2729 device. 2730 2731 Correctly support "references" in the ACPI_OBJECT. This change fixes the 2732 support to allow references (namespace nodes) to be passed as arguments 2733 to control methods via the evaluate object interface. This is probably 2734 most useful for testing purposes, however. 2735 2736 Improved support for 32/64 bit physical addresses in printf()-like 2737 output. This change improves the support for physical addresses in printf 2738 debug statements and other output on both 32-bit and 64-bit hosts. It 2739 consistently outputs the appropriate number of bytes for each host. The 2740 %p specifier is unsatisfactory since it does not emit uniform output on 2741 all hosts/clib implementations (on some, leading zeros are not supported, 2742 leading to difficult-to-read output). 2743 2744 Example Code and Data Size: These are the sizes for the OS-independent 2745 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2746 debug version of the code includes the debug output trace mechanism and 2747 has a much larger code and data size. 2748 2749 Current Release: 2750 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total 2751 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total 2752 Previous Release: 2753 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total 2754 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total 2755 2756 2757 2) iASL Compiler/Disassembler and Tools: 2758 2759 iASL: Fix a possible fault when using the Connection() operator. Fixes a 2760 problem if the parent Field definition for the Connection operator refers 2761 to an operation region that does not exist. ACPICA BZ 1064. 2762 2763 AcpiExec: Load of local test tables is now optional. The utility has the 2764 capability to load some various tables to test features of ACPICA. 2765 However, there are enough of them that the output of the utility became 2766 confusing. With this change, only the required local tables are displayed 2767 (RSDP, XSDT, etc.) along with the actual tables loaded via the command 2768 line specification. This makes the default output simler and easier to 2769 understand. The -el command line option restores the original behavior 2770 for testing purposes. 2771 2772 AcpiExec: Added support for overlapping operation regions. This change 2773 expands the simulation of operation regions by supporting regions that 2774 overlap within the given address space. Supports SystemMemory and 2775 SystemIO. ASLTS test suite updated also. David Box. ACPICA BZ 1031. 2776 2777 AcpiExec: Added region handler support for PCI_Config and EC spaces. This 2778 allows AcpiExec to simulate these address spaces, similar to the current 2779 support for SystemMemory and SystemIO. 2780 2781 Debugger: Added new command to read/write/compare all namespace objects. 2782 The command "test objects" will exercise the entire namespace by writing 2783 new values to each data object, and ensuring that the write was 2784 successful. The original value is then restored and verified. 2785 2786 Debugger: Added the "test predefined" command. This change makes this 2787 test public and puts it under the new "test" command. The test executes 2788 each and every predefined name within the current namespace. 2789 2790 2791 ---------------------------------------- 2792 18 December 2013. Summary of changes for version 20131218: 2793 2794 Global note: The ACPI 5.0A specification was released this month. There 2795 are no changes needed for ACPICA since this release of ACPI is an 2796 errata/clarification release. The specification is available at 2797 acpi.info. 2798 2799 2800 1) ACPICA kernel-resident subsystem: 2801 2802 Added validation of the XSDT root table if it is present. Some older 2803 platforms contain an XSDT that is ill-formed or otherwise invalid (such 2804 as containing some or all entries that are NULL pointers). This change 2805 adds a new function to validate the XSDT before actually using it. If the 2806 XSDT is found to be invalid, ACPICA will now automatically fall back to 2807 using the RSDT instead. Original implementation by Zhao Yakui. Ported to 2808 ACPICA and enhanced by Lv Zheng and Bob Moore. 2809 2810 Added a runtime option to ignore the XSDT and force the use of the RSDT. 2811 This change adds a runtime option that will force ACPICA to use the RSDT 2812 instead of the XSDT (AcpiGbl_DoNotUseXsdt). Although the ACPI spec 2813 requires that an XSDT be used instead of the RSDT, the XSDT has been 2814 found to be corrupt or ill-formed on some machines. Lv Zheng. 2815 2816 Added a runtime option to favor 32-bit FADT register addresses over the 2817 64-bit addresses. This change adds an option to favor 32-bit FADT 2818 addresses when there is a conflict between the 32-bit and 64-bit versions 2819 of the same register. The default behavior is to use the 64-bit version 2820 in accordance with the ACPI specification. This can now be overridden via 2821 the AcpiGbl_Use32BitFadtAddresses flag. ACPICA BZ 885. Lv Zheng. 2822 2823 During the change above, the internal "Convert FADT" and "Verify FADT" 2824 functions have been merged to simplify the code, making it easier to 2825 understand and maintain. ACPICA BZ 933. 2826 2827 Improve exception reporting and handling for GPE block installation. 2828 Return an actual status from AcpiEvGetGpeXruptBlock and don't clobber the 2829 status when exiting AcpiEvInstallGpeBlock. ACPICA BZ 1019. 2830 2831 Added helper macros to extract bus/segment numbers from the HEST table. 2832 This change adds two macros to extract the encoded bus and segment 2833 numbers from the HEST Bus field - ACPI_HEST_BUS and ACPI_HEST_SEGMENT. 2834 Betty Dall <betty.dall (a] hp.com> 2835 2836 Removed the unused ACPI_FREE_BUFFER macro. This macro is no longer used 2837 by ACPICA. It is not a public macro, so it should have no effect on 2838 existing OSV code. Lv Zheng. 2839 2840 Example Code and Data Size: These are the sizes for the OS-independent 2841 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2842 debug version of the code includes the debug output trace mechanism and 2843 has a much larger code and data size. 2844 2845 Current Release: 2846 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total 2847 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total 2848 Previous Release: 2849 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total 2850 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total 2851 2852 2853 2) iASL Compiler/Disassembler and Tools: 2854 2855 Disassembler: Improved pathname support for emitted External() 2856 statements. This change adds full pathname support for external names 2857 that have been resolved internally by the inclusion of additional ACPI 2858 tables (via the iASL -e option). Without this change, the disassembler 2859 can emit multiple externals for the same object, or it become confused 2860 when the Scope() operator is used on an external object. Overall, greatly 2861 improves the ability to actually recompile the emitted ASL code when 2862 objects a referenced across multiple ACPI tables. Reported by Michael 2863 Tsirkin (mst (a] redhat.com). 2864 2865 Tests/ASLTS: Updated functional control suite to execute with no errors. 2866 David Box. Fixed several errors related to the testing of the interpreter 2867 slack mode. Lv Zheng. 2868 2869 iASL: Added support to detect names that are declared within a control 2870 method, but are unused (these are temporary names that are only valid 2871 during the time the method is executing). A remark is issued for these 2872 cases. ACPICA BZ 1022. 2873 2874 iASL: Added full support for the DBG2 table. Adds full disassembler, 2875 table compiler, and template generator support for the DBG2 table (Debug 2876 Port 2 table). 2877 2878 iASL: Added full support for the PCCT table, update the table definition. 2879 Updates the PCCT table definition in the actbl3.h header and adds table 2880 compiler and template generator support. 2881 2882 iASL: Added an option to emit only error messages (no warnings/remarks). 2883 The -ve option will enable only error messages, warnings and remarks are 2884 suppressed. This can simplify debugging when only the errors are 2885 important, such as when an ACPI table is disassembled and there are many 2886 warnings and remarks -- but only the actual errors are of real interest. 2887 2888 Example ACPICA code (source/tools/examples): Updated the example code so 2889 that it builds to an actual working program, not just example code. Added 2890 ACPI tables and execution of an example control method in the DSDT. Added 2891 makefile support for Unix generation. 2892 2893 2894 ---------------------------------------- 2895 15 November 2013. Summary of changes for version 20131115: 2896 2897 This release is available at https://acpica.org/downloads 2898 2899 2900 1) ACPICA kernel-resident subsystem: 2901 2902 Resource Manager: Fixed loop termination for the "get AML length" 2903 function. The loop previously had an error termination on a NULL resource 2904 pointer, which can never happen since the loop simply increments a valid 2905 resource pointer. This fix changes the loop to terminate with an error on 2906 an invalid end-of-buffer condition. The problem can be seen as an 2907 infinite loop by callers to AcpiSetCurrentResources with an invalid or 2908 corrupted resource descriptor, or a resource descriptor that is missing 2909 an END_TAG descriptor. Reported by Dan Carpenter 2910 <dan.carpenter (a] oracle.com>. Lv Zheng, Bob Moore. 2911 2912 Table unload and ACPICA termination: Delete all attached data objects 2913 during namespace node deletion. This fix updates namespace node deletion 2914 to delete the entire list of attached objects (attached via 2915 AcpiAttachObject) instead of just one of the attached items. ACPICA BZ 2916 1024. Tomasz Nowicki (tomasz.nowicki (a] linaro.org). 2917 2918 ACPICA termination: Added support to delete all objects attached to the 2919 root namespace node. This fix deletes any and all objects that have been 2920 attached to the root node via AcpiAttachData. Previously, none of these 2921 objects were deleted. Reported by Tomasz Nowicki. ACPICA BZ 1026. 2922 2923 Debug output: Do not emit the function nesting level for the in-kernel 2924 build. The nesting level is really only useful during a single-thread 2925 execution. Therefore, only enable this output for the AcpiExec utility. 2926 Also, only emit the thread ID when executing under AcpiExec (Context 2927 switches are still always detected and a message is emitted). ACPICA BZ 2928 972. 2929 2930 Example Code and Data Size: These are the sizes for the OS-independent 2931 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2932 debug version of the code includes the debug output trace mechanism and 2933 has a much larger code and data size. 2934 2935 Current Release: 2936 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total 2937 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total 2938 Previous Release: 2939 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total 2940 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total 2941 2942 2943 2) iASL Compiler/Disassembler and Tools: 2944 2945 AcpiExec/Unix-OSL: Use <termios.h> instead of <termio.h>. This is the 2946 correct portable POSIX header for terminal control functions. 2947 2948 Disassembler: Fixed control method invocation issues related to the use 2949 of the CondRefOf() operator. The problem is seen in the disassembly where 2950 control method invocations may not be disassembled properly if the 2951 control method name has been used previously as an argument to CondRefOf. 2952 The solution is to not attempt to emit an external declaration for the 2953 CondRefOf target (it is not necessary in the first place). This prevents 2954 disassembler object type confusion. ACPICA BZ 988. 2955 2956 Unix Makefiles: Added an option to disable compiler optimizations and the 2957 _FORTIFY_SOURCE flag. Some older compilers have problems compiling ACPICA 2958 with optimizations (reportedly, gcc 4.4 for example). This change adds a 2959 command line option for make (NOOPT) that disables all compiler 2960 optimizations and the _FORTIFY_SOURCE compiler flag. The default 2961 optimization is -O2 with the _FORTIFY_SOURCE flag specified. ACPICA BZ 2962 1034. Lv Zheng, Bob Moore. 2963 2964 Tests/ASLTS: Added options to specify individual test cases and modes. 2965 This allows testers running aslts.sh to optionally specify individual 2966 test modes and test cases. Also added an option to disable the forced 2967 generation of the ACPICA tools from source if desired. Lv Zheng. 2968 2969 ---------------------------------------- 2970 27 September 2013. Summary of changes for version 20130927: 2971 2972 This release is available at https://acpica.org/downloads 2973 2974 2975 1) ACPICA kernel-resident subsystem: 2976 2977 Fixed a problem with store operations to reference objects. This change 2978 fixes a problem where a Store operation to an ArgX object that contained 2979 a 2980 reference to a field object did not complete the automatic dereference 2981 and 2982 then write to the actual field object. Instead, the object type of the 2983 field object was inadvertently changed to match the type of the source 2984 operand. The new behavior will actually write to the field object (buffer 2985 field or field unit), thus matching the correct ACPI-defined behavior. 2986 2987 Implemented support to allow the host to redefine individual OSL 2988 prototypes. This change enables the host to redefine OSL prototypes found 2989 in the acpiosxf.h file. This allows the host to implement OSL interfaces 2990 with a macro or inlined function. Further, it allows the host to add any 2991 additional required modifiers such as __iomem, __init, __exit, etc., as 2992 necessary on a per-interface basis. Enables maximum flexibility for the 2993 OSL interfaces. Lv Zheng. 2994 2995 Hardcoded the access width for the FADT-defined reset register. The ACPI 2996 specification requires the reset register width to be 8 bits. ACPICA now 2997 hardcodes the width to 8 and ignores the FADT width value. This provides 2998 compatibility with other ACPI implementations that have allowed BIOS code 2999 with bad register width values to go unnoticed. Matthew Garett, Bob 3000 Moore, 3001 Lv Zheng. 3002 3003 Changed the position/use of the ACPI_PRINTF_LIKE macro. This macro is 3004 used 3005 in the OSL header (acpiosxf). The change modifies the position of this 3006 macro in each instance where it is used (AcpiDebugPrint, etc.) to avoid 3007 build issues if the OSL defines the implementation of the interface to be 3008 an inline stub function. Lv Zheng. 3009 3010 Deployed a new macro ACPI_EXPORT_SYMBOL_INIT for the main ACPICA 3011 initialization interfaces. This change adds a new macro for the main init 3012 and terminate external interfaces in order to support hosts that require 3013 additional or different processing for these functions. Changed from 3014 ACPI_EXPORT_SYMBOL to ACPI_EXPORT_SYMBOL_INIT for these functions. Lv 3015 Zheng, Bob Moore. 3016 3017 Cleaned up the memory allocation macros for configurability. In the 3018 common 3019 case, the ACPI_ALLOCATE and related macros now resolve directly to their 3020 respective AcpiOs* OSL interfaces. Two options: 3021 1) The ACPI_ALLOCATE_ZEROED macro uses a simple local implementation by 3022 default, unless overridden by the USE_NATIVE_ALLOCATE_ZEROED define. 3023 2) For AcpiExec (and for debugging), the macros can optionally be 3024 resolved 3025 to the local ACPICA interfaces that track each allocation (local tracking 3026 is used to immediately detect memory leaks). 3027 Lv Zheng. 3028 3029 Simplified the configuration for ACPI_REDUCED_HARDWARE. Allows the kernel 3030 to predefine this macro to either TRUE or FALSE during the system build. 3031 3032 Replaced __FUNCTION_ with __func__ in the gcc-specific header. 3033 3034 Example Code and Data Size: These are the sizes for the OS-independent 3035 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3036 debug version of the code includes the debug output trace mechanism and 3037 has a much larger code and data size. 3038 3039 Current Release: 3040 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total 3041 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total 3042 Previous Release: 3043 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total 3044 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total 3045 3046 3047 2) iASL Compiler/Disassembler and Tools: 3048 3049 iASL: Implemented wildcard support for the -e option. This simplifies use 3050 when there are many SSDTs that must be included to resolve external 3051 method 3052 declarations. ACPICA BZ 1041. Example: 3053 iasl -e ssdt*.dat -d dsdt.dat 3054 3055 AcpiExec: Add history/line-editing for Unix/Linux systems. This change 3056 adds a portable module that implements full history and limited line 3057 editing for Unix and Linux systems. It does not use readline() due to 3058 portability issues. Instead it uses the POSIX termio interface to put the 3059 terminal in raw input mode so that the various special keys can be 3060 trapped 3061 (such as up/down-arrow for history support and left/right-arrow for line 3062 editing). Uses the existing debugger history mechanism. ACPICA BZ 1036. 3063 3064 AcpiXtract: Add support to handle (ignore) "empty" lines containing only 3065 one or more spaces. This provides compatible with early or different 3066 versions of the AcpiDump utility. ACPICA BZ 1044. 3067 3068 AcpiDump: Do not ignore tables that contain only an ACPI table header. 3069 Apparently, some BIOSs create SSDTs that contain an ACPI table header but 3070 no other data. This change adds support to dump these tables. Any tables 3071 shorter than the length of an ACPI table header remain in error (an error 3072 message is emitted). Reported by Yi Li. 3073 3074 Debugger: Echo actual command along with the "unknown command" message. 3075 3076 ---------------------------------------- 3077 23 August 2013. Summary of changes for version 20130823: 3078 3079 1) ACPICA kernel-resident subsystem: 3080 3081 Implemented support for host-installed System Control Interrupt (SCI) 3082 handlers. Certain ACPI functionality requires the host to handle raw 3083 SCIs. For example, the "SCI Doorbell" that is defined for memory power 3084 state support requires the host device driver to handle SCIs to examine 3085 if the doorbell has been activated. Multiple SCI handlers can be 3086 installed to allow for future expansion. New external interfaces are 3087 AcpiInstallSciHandler, AcpiRemoveSciHandler; see the ACPICA reference for 3088 details. Lv Zheng, Bob Moore. ACPICA BZ 1032. 3089 3090 Operation region support: Never locally free the handler "context" 3091 pointer. This change removes some dangerous code that attempts to free 3092 the handler context pointer in some (rare) circumstances. The owner of 3093 the handler owns this pointer and the ACPICA code should never touch it. 3094 Although not seen to be an issue in any kernel, it did show up as a 3095 problem (fault) under AcpiExec. Also, set the internal storage field for 3096 the context pointer to zero when the region is deactivated, simply for 3097 sanity. David Box. ACPICA BZ 1039. 3098 3099 AcpiRead: On error, do not modify the return value target location. If an 3100 error happens in the middle of a split 32/32 64-bit I/O operation, do not 3101 modify the target of the return value pointer. Makes the code consistent 3102 with the rest of ACPICA. Bjorn Helgaas. 3103 3104 Example Code and Data Size: These are the sizes for the OS-independent 3105 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3106 debug version of the code includes the debug output trace mechanism and 3107 has a much larger code and data size. 3108 3109 Current Release: 3110 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total 3111 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total 3112 Previous Release: 3113 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total 3114 Debug Version: 185.4K Code, 77.1K Data, 262.5K Total 3115 3116 3117 2) iASL Compiler/Disassembler and Tools: 3118 3119 AcpiDump: Implemented several new features and fixed some problems: 3120 1) Added support to dump the RSDP, RSDT, and XSDT tables. 3121 2) Added support for multiple table instances (SSDT, UEFI). 3122 3) Added option to dump "customized" (overridden) tables (-c). 3123 4) Fixed a problem where some table filenames were improperly 3124 constructed. 3125 5) Improved some error messages, removed some unnecessary messages. 3126 3127 iASL: Implemented additional support for disassembly of ACPI tables that 3128 contain invocations of external control methods. The -fe<file> option 3129 allows the import of a file that specifies the external methods along 3130 with the required number of arguments for each -- allowing for the 3131 correct disassembly of the table. This is a workaround for a limitation 3132 of AML code where the disassembler often cannot determine the number of 3133 arguments required for an external control method and generates incorrect 3134 ASL code. See the iASL reference for details. ACPICA BZ 1030. 3135 3136 Debugger: Implemented a new command (paths) that displays the full 3137 pathnames (namepaths) and object types of all objects in the namespace. 3138 This is an alternative to the namespace command. 3139 3140 Debugger: Implemented a new command (sci) that invokes the SCI dispatch 3141 mechanism and any installed handlers. 3142 3143 iASL: Fixed a possible segfault for "too many parent prefixes" condition. 3144 This can occur if there are too many parent prefixes in a namepath (for 3145 example, ^^^^^^PCI0.ECRD). ACPICA BZ 1035. 3146 3147 Application OSLs: Set the return value for the PCI read functions. These 3148 functions simply return AE_OK, but should set the return value to zero 3149 also. This change implements this. ACPICA BZ 1038. 3150 3151 Debugger: Prevent possible command line buffer overflow. Increase the 3152 size of a couple of the debugger line buffers, and ensure that overflow 3153 cannot happen. ACPICA BZ 1037. 3154 3155 iASL: Changed to abort immediately on serious errors during the parsing 3156 phase. Due to the nature of ASL, there is no point in attempting to 3157 compile these types of errors, and they typically end up causing a 3158 cascade of hundreds of errors which obscure the original problem. 3159 3160 ---------------------------------------- 3161 25 July 2013. Summary of changes for version 20130725: 3162 3163 1) ACPICA kernel-resident subsystem: 3164 3165 Fixed a problem with the DerefOf operator where references to FieldUnits 3166 and BufferFields incorrectly returned the parent object, not the actual 3167 value of the object. After this change, a dereference of a FieldUnit 3168 reference results in a read operation on the field to get the value, and 3169 likewise, the appropriate BufferField value is extracted from the target 3170 buffer. 3171 3172 Fixed a problem where the _WAK method could cause a fault under these 3173 circumstances: 1) Interpreter slack mode was not enabled, and 2) the _WAK 3174 method returned no value. The problem is rarely seen because most kernels 3175 run ACPICA in slack mode. 3176 3177 For the DerefOf operator, a fatal error now results if an attempt is made 3178 to dereference a reference (created by the Index operator) to a NULL 3179 package element. Provides compatibility with other ACPI implementations, 3180 and this behavior will be added to a future version of the ACPI 3181 specification. 3182 3183 The ACPI Power Management Timer (defined in the FADT) is now optional. 3184 This provides compatibility with other ACPI implementations and will 3185 appear in the next version of the ACPI specification. If there is no PM 3186 Timer on the platform, AcpiGetTimer returns AE_SUPPORT. An address of 3187 zero in the FADT indicates no PM timer. 3188 3189 Implemented a new interface for _OSI support, AcpiUpdateInterfaces. This 3190 allows the host to globally enable/disable all vendor strings, all 3191 feature strings, or both. Intended to be primarily used for debugging 3192 purposes only. Lv Zheng. 3193 3194 Expose the collected _OSI data to the host via a global variable. This 3195 data tracks the highest level vendor ID that has been invoked by the BIOS 3196 so that the host (and potentially ACPICA itself) can change behaviors 3197 based upon the age of the BIOS. 3198 3199 Example Code and Data Size: These are the sizes for the OS-independent 3200 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3201 debug version of the code includes the debug output trace mechanism and 3202 has a much larger code and data size. 3203 3204 Current Release: 3205 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total 3206 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total 3207 Previous Release: 3208 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total 3209 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total 3210 3211 3212 2) iASL Compiler/Disassembler and Tools: 3213 3214 iASL: Created the following enhancements for the -so option (create 3215 offset table): 3216 1)Add offsets for the last nameseg in each namepath for every supported 3217 object type 3218 2)Add support for Processor, Device, Thermal Zone, and Scope objects 3219 3)Add the actual AML opcode for the parent object of every supported 3220 object type 3221 4)Add support for the ZERO/ONE/ONES AML opcodes for integer objects 3222 3223 Disassembler: Emit all unresolved external symbols in a single block. 3224 These are external references to control methods that could not be 3225 resolved, and thus, the disassembler had to make a guess at the number of 3226 arguments to parse. 3227 3228 iASL: The argument to the -T option (create table template) is now 3229 optional. If not specified, the default table is a DSDT, typically the 3230 most common case. 3231 3232 ---------------------------------------- 3233 26 June 2013. Summary of changes for version 20130626: 3234 3235 1) ACPICA kernel-resident subsystem: 3236 3237 Fixed an issue with runtime repair of the _CST object. Null or invalid 3238 elements were not always removed properly. Lv Zheng. 3239 3240 Removed an arbitrary restriction of 256 GPEs per GPE block (such as the 3241 FADT-defined GPE0 and GPE1). For GPE0, GPE1, and each GPE Block Device, 3242 the maximum number of GPEs is 1016. Use of multiple GPE block devices 3243 makes the system-wide number of GPEs essentially unlimited. 3244 3245 Example Code and Data Size: These are the sizes for the OS-independent 3246 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3247 debug version of the code includes the debug output trace mechanism and 3248 has a much larger code and data size. 3249 3250 Current Release: 3251 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total 3252 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total 3253 Previous Release: 3254 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total 3255 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total 3256 3257 3258 2) iASL Compiler/Disassembler and Tools: 3259 3260 Portable AcpiDump: Implemented full support for the Linux and FreeBSD 3261 hosts. Now supports Linux, FreeBSD, and Windows. 3262 3263 Disassembler: Added some missing types for the HEST and EINJ tables: "Set 3264 Error Type With Address", "CMCI", "MCE", and "Flush Cacheline". 3265 3266 iASL/Preprocessor: Implemented full support for nested 3267 #if/#else/#elif/#endif blocks. Allows arbitrary depth of nested blocks. 3268 3269 Disassembler: Expanded maximum output string length to 64K. Was 256 bytes 3270 max. The original purpose of this constraint was to limit the amount of 3271 debug output. However, the string function in question (UtPrintString) is 3272 now used for the disassembler also, where 256 bytes is insufficient. 3273 Reported by RehabMan@GitHub. 3274 3275 iASL/DataTables: Fixed some problems and issues with compilation of DMAR 3276 tables. ACPICA BZ 999. Lv Zheng. 3277 3278 iASL: Fixed a couple of error exit issues that could result in a "Could 3279 not delete <file>" message during ASL compilation. 3280 3281 AcpiDump: Allow "FADT" and "MADT" as valid table signatures, even though 3282 the actual signatures for these tables are "FACP" and "APIC", 3283 respectively. 3284 3285 AcpiDump: Added support for multiple UEFI tables. Only SSDT and UEFI 3286 tables are allowed to have multiple instances. 3287 3288 ---------------------------------------- 3289 17 May 2013. Summary of changes for version 20130517: 3290 3291 1) ACPICA kernel-resident subsystem: 3292 3293 Fixed a regression introduced in version 20130328 for _INI methods. This 3294 change fixes a problem introduced in 20130328 where _INI methods are no 3295 longer executed properly because of a memory block that was not 3296 initialized correctly. ACPICA BZ 1016. Tomasz Nowicki 3297 <tomasz.nowicki (a] linaro.org>. 3298 3299 Fixed a possible problem with the new extended sleep registers in the 3300 ACPI 3301 5.0 FADT. Do not use these registers (even if populated) unless the HW- 3302 reduced bit is set in the FADT (as per the ACPI specification). ACPICA BZ 3303 1020. Lv Zheng. 3304 3305 Implemented return value repair code for _CST predefined objects: Sort 3306 the 3307 list and detect/remove invalid entries. ACPICA BZ 890. Lv Zheng. 3308 3309 Implemented a debug-only option to disable loading of SSDTs from the 3310 RSDT/XSDT during ACPICA initialization. This can be useful for debugging 3311 ACPI problems on some machines. Set AcpiGbl_DisableSsdtTableLoad in 3312 acglobal.h - ACPICA BZ 1005. Lv Zheng. 3313 3314 Fixed some issues in the ACPICA initialization and termination code: 3315 Tomasz Nowicki <tomasz.nowicki (a] linaro.org> 3316 1) Clear events initialized flag upon event component termination. ACPICA 3317 BZ 1013. 3318 2) Fixed a possible memory leak in GPE init error path. ACPICA BZ 1018. 3319 3) Delete global lock pending lock during termination. ACPICA BZ 1012. 3320 4) Clear debug buffer global on termination to prevent possible multiple 3321 delete. ACPICA BZ 1010. 3322 3323 Standardized all switch() blocks across the entire source base. After 3324 many 3325 years, different formatting for switch() had crept in. This change makes 3326 the formatting of every switch block identical. ACPICA BZ 997. Chao Guan. 3327 3328 Split some files to enhance ACPICA modularity and configurability: 3329 1) Split buffer dump routines into utilities/utbuffer.c 3330 2) Split internal error message routines into utilities/uterror.c 3331 3) Split table print utilities into tables/tbprint.c 3332 4) Split iASL command-line option processing into asloptions.c 3333 3334 Makefile enhancements: 3335 1) Support for all new files above. 3336 2) Abort make on errors from any subcomponent. Chao Guan. 3337 3) Add build support for Apple Mac OS X. Liang Qi. 3338 3339 Example Code and Data Size: These are the sizes for the OS-independent 3340 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3341 debug version of the code includes the debug output trace mechanism and 3342 has a much larger code and data size. 3343 3344 Current Release: 3345 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total 3346 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total 3347 Previous Release: 3348 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total 3349 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total 3350 3351 3352 2) iASL Compiler/Disassembler and Tools: 3353 3354 New utility: Implemented an easily portable version of the acpidump 3355 utility to extract ACPI tables from the system (or a file) in an ASCII 3356 hex 3357 dump format. The top-level code implements the various command line 3358 options, file I/O, and table dump routines. To port to a new host, only 3359 three functions need to be implemented to get tables -- since this 3360 functionality is OS-dependent. See the tools/acpidump/apmain.c module and 3361 the ACPICA reference for porting instructions. ACPICA BZ 859. Notes: 3362 1) The Windows version obtains the ACPI tables from the Registry. 3363 2) The Linux version is under development. 3364 3) Other hosts - If an OS-dependent module is submitted, it will be 3365 distributed with ACPICA. 3366 3367 iASL: Fixed a regression for -D preprocessor option (define symbol). A 3368 restructuring/change to the initialization sequence caused this option to 3369 no longer work properly. 3370 3371 iASL: Implemented a mechanism to disable specific warnings and remarks. 3372 Adds a new command line option, "-vw <messageid> as well as "#pragma 3373 disable <messageid>". ACPICA BZ 989. Chao Guan, Bob Moore. 3374 3375 iASL: Fix for too-strict package object validation. The package object 3376 validation for return values from the predefined names is a bit too 3377 strict, it does not allow names references within the package (which will 3378 be resolved at runtime.) These types of references cannot be validated at 3379 compile time. This change ignores named references within package objects 3380 for names that return or define static packages. 3381 3382 Debugger: Fixed the 80-character command line limitation for the History 3383 command. Now allows lines of arbitrary length. ACPICA BZ 1000. Chao Guan. 3384 3385 iASL: Added control method and package support for the -so option 3386 (generates AML offset table for BIOS support.) 3387 3388 iASL: issue a remark if a non-serialized method creates named objects. If 3389 a thread blocks within the method for any reason, and another thread 3390 enters the method, the method will fail because an attempt will be made 3391 to 3392 create the same (named) object twice. In this case, issue a remark that 3393 the method should be marked serialized. NOTE: may become a warning later. 3394 ACPICA BZ 909. 3395 3396 ---------------------------------------- 3397 18 April 2013. Summary of changes for version 20130418: 3398 3399 1) ACPICA kernel-resident subsystem: 3400 3401 Fixed a possible buffer overrun during some rare but specific field unit 3402 read operations. This overrun can only happen if the DSDT version is 1 -- 3403 meaning that all AML integers are 32 bits -- and the field length is 3404 between 33 and 55 bits long. During the read, an internal buffer object 3405 is 3406 created for the field unit because the field is larger than an integer 3407 (32 3408 bits). However, in this case, the buffer will be incorrectly written 3409 beyond the end because the buffer length is less than the internal 3410 minimum 3411 of 64 bits (8 bytes) long. The buffer will be either 5, 6, or 7 bytes 3412 long, but a full 8 bytes will be written. 3413 3414 Updated the Embedded Controller "orphan" _REG method support. This refers 3415 to _REG methods under the EC device that have no corresponding operation 3416 region. This is allowed by the ACPI specification. This update removes a 3417 dependency on the existence an ECDT table. It will execute an orphan _REG 3418 method as long as the operation region handler for the EC is installed at 3419 the EC device node and not the namespace root. Rui Zhang (original 3420 update), Bob Moore (update/integrate). 3421 3422 Implemented run-time argument typechecking for all predefined ACPI names 3423 (_STA, _BIF, etc.) This change performs object typechecking on all 3424 incoming arguments for all predefined names executed via 3425 AcpiEvaluateObject. This ensures that ACPI-related device drivers are 3426 passing correct object types as well as the correct number of arguments 3427 (therefore identifying any issues immediately). Also, the ASL/namespace 3428 definition of the predefined name is checked against the ACPI 3429 specification for the proper argument count. Adds one new file, 3430 nsarguments.c 3431 3432 Changed an exception code for the ASL UnLoad() operator. Changed the 3433 exception code for the case where the input DdbHandle is invalid, from 3434 AE_BAD_PARAMETER to the more appropriate AE_AML_OPERAND_TYPE. 3435 3436 Unix/Linux makefiles: Removed the use of the -O2 optimization flag in the 3437 global makefile. The use of this flag causes compiler errors on earlier 3438 versions of GCC, so it has been removed for compatibility. 3439 3440 Miscellaneous cleanup: 3441 1) Removed some unused/obsolete macros 3442 2) Fixed a possible memory leak in the _OSI support 3443 3) Removed an unused variable in the predefined name support 3444 4) Windows OSL: remove obsolete reference to a memory list field 3445 3446 Example Code and Data Size: These are the sizes for the OS-independent 3447 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3448 debug version of the code includes the debug output trace mechanism and 3449 has a much larger code and data size. 3450 3451 Current Release: 3452 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total 3453 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total 3454 Previous Release: 3455 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total 3456 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total 3457 3458 3459 2) iASL Compiler/Disassembler and Tools: 3460 3461 AcpiExec: Added installation of a handler for the SystemCMOS address 3462 space. This prevents control method abort if a method accesses this 3463 space. 3464 3465 AcpiExec: Added support for multiple EC devices, and now install EC 3466 operation region handler(s) at the actual EC device instead of the 3467 namespace root. This reflects the typical behavior of host operating 3468 systems. 3469 3470 AcpiExec: Updated to ensure that all operation region handlers are 3471 installed before the _REG methods are executed. This prevents a _REG 3472 method from aborting if it accesses an address space has no handler. 3473 AcpiExec installs a handler for every possible address space. 3474 3475 Debugger: Enhanced the "handlers" command to display non-root handlers. 3476 This change enhances the handlers command to display handlers associated 3477 with individual devices throughout the namespace, in addition to the 3478 currently supported display of handlers associated with the root 3479 namespace 3480 node. 3481 3482 ASL Test Suite: Several test suite errors have been identified and 3483 resolved, reducing the total error count during execution. Chao Guan. 3484 3485 ---------------------------------------- 3486 28 March 2013. Summary of changes for version 20130328: 3487 3488 1) ACPICA kernel-resident subsystem: 3489 3490 Fixed several possible race conditions with the internal object reference 3491 counting mechanism. Some of the external ACPICA interfaces update object 3492 reference counts without holding the interpreter or namespace lock. This 3493 change adds a spinlock to protect reference count updates on the internal 3494 ACPICA objects. Reported by and with assistance from Andriy Gapon 3495 (avg (a] FreeBSD.org). 3496 3497 FADT support: Removed an extraneous warning for very large GPE register 3498 sets. This change removes a size mismatch warning if the legacy length 3499 field for a GPE register set is larger than the 64-bit GAS structure can 3500 accommodate. GPE register sets can be larger than the 255-bit width 3501 limitation of the GAS structure. Linn Crosetto (linn (a] hp.com). 3502 3503 _OSI Support: handle any errors from AcpiOsAcquireMutex. Check for error 3504 return from this interface. Handles a possible timeout case if 3505 ACPI_WAIT_FOREVER is modified by the host to be a value less than 3506 "forever". Jung-uk Kim. 3507 3508 Predefined name support: Add allowed/required argument type information 3509 to 3510 the master predefined info table. This change adds the infrastructure to 3511 enable typechecking on incoming arguments for all predefined 3512 methods/objects. It does not actually contain the code that will fully 3513 utilize this information, this is still under development. Also condenses 3514 some duplicate code for the predefined names into a new module, 3515 utilities/utpredef.c 3516 3517 Example Code and Data Size: These are the sizes for the OS-independent 3518 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3519 debug version of the code includes the debug output trace mechanism and 3520 has a much larger code and data size. 3521 3522 Previous Release: 3523 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total 3524 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total 3525 Current Release: 3526 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total 3527 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total 3528 3529 3530 2) iASL Compiler/Disassembler and Tools: 3531 3532 iASL: Implemented a new option to simplify the development of ACPI- 3533 related 3534 BIOS code. Adds support for a new "offset table" output file. The -so 3535 option will create a C table containing the AML table offsets of various 3536 named objects in the namespace so that BIOS code can modify them easily 3537 at 3538 boot time. This can simplify BIOS runtime code by eliminating expensive 3539 searches for "magic values", enhancing boot times and adding greater 3540 reliability. With assistance from Lee Hamel. 3541 3542 iASL: Allow additional predefined names to return zero-length packages. 3543 Now, all predefined names that are defined by the ACPI specification to 3544 return a "variable-length package of packages" are allowed to return a 3545 zero length top-level package. This allows the BIOS to tell the host that 3546 the requested feature is not supported, and supports existing BIOS/ASL 3547 code and practices. 3548 3549 iASL: Changed the "result not used" warning to an error. This is the case 3550 where an ASL operator is effectively a NOOP because the result of the 3551 operation is not stored anywhere. For example: 3552 Add (4, Local0) 3553 There is no target (missing 3rd argument), nor is the function return 3554 value used. This is potentially a very serious problem -- since the code 3555 was probably intended to do something, but for whatever reason, the value 3556 was not stored. Therefore, this issue has been upgraded from a warning to 3557 an error. 3558 3559 AcpiHelp: Added allowable/required argument types to the predefined names 3560 info display. This feature utilizes the recent update to the predefined 3561 names table (above). 3562 3563 ---------------------------------------- 3564 14 February 2013. Summary of changes for version 20130214: 3565 3566 1) ACPICA Kernel-resident Subsystem: 3567 3568 Fixed a possible regression on some hosts: Reinstated the safe return 3569 macros (return_ACPI_STATUS, etc.) that ensure that the argument is 3570 evaluated only once. Although these macros are not needed for the ACPICA 3571 code itself, they are often used by ACPI-related host device drivers 3572 where 3573 the safe feature may be necessary. 3574 3575 Fixed several issues related to the ACPI 5.0 reduced hardware support 3576 (SOC): Now ensure that if the platform declares itself as hardware- 3577 reduced 3578 via the FADT, the following functions become NOOPs (and always return 3579 AE_OK) because ACPI is always enabled by definition on these machines: 3580 AcpiEnable 3581 AcpiDisable 3582 AcpiHwGetMode 3583 AcpiHwSetMode 3584 3585 Dynamic Object Repair: Implemented additional runtime repairs for 3586 predefined name return values. Both of these repairs can simplify code in 3587 the related device drivers that invoke these methods: 3588 1) For the _STR and _MLS names, automatically repair/convert an ASCII 3589 string to a Unicode buffer. 3590 2) For the _CRS, _PRS, and _DMA names, return a resource descriptor with 3591 a 3592 lone end tag descriptor in the following cases: A Return(0) was executed, 3593 a null buffer was returned, or no object at all was returned (non-slack 3594 mode only). Adds a new file, nsconvert.c 3595 ACPICA BZ 998. Bob Moore, Lv Zheng. 3596 3597 Resource Manager: Added additional code to prevent possible infinite 3598 loops 3599 while traversing corrupted or ill-formed resource template buffers. Check 3600 for zero-length resource descriptors in all code that loops through 3601 resource templates (the length field is used to index through the 3602 template). This change also hardens the external AcpiWalkResources and 3603 AcpiWalkResourceBuffer interfaces. 3604 3605 Local Cache Manager: Enhanced the main data structure to eliminate an 3606 unnecessary mechanism to access the next object in the list. Actually 3607 provides a small performance enhancement for hosts that use the local 3608 ACPICA cache manager. Jung-uk Kim. 3609 3610 Example Code and Data Size: These are the sizes for the OS-independent 3611 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3612 debug version of the code includes the debug output trace mechanism and 3613 has a much larger code and data size. 3614 3615 Previous Release: 3616 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total 3617 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total 3618 Current Release: 3619 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total 3620 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total 3621 3622 3623 2) iASL Compiler/Disassembler and Tools: 3624 3625 iASL/Disassembler: Fixed several issues with the definition of the ACPI 3626 5.0 RASF table (RAS Feature Table). This change incorporates late changes 3627 that were made to the ACPI 5.0 specification. 3628 3629 iASL/Disassembler: Added full support for the following new ACPI tables: 3630 1) The MTMR table (MID Timer Table) 3631 2) The VRTC table (Virtual Real Time Clock Table). 3632 Includes header file, disassembler, table compiler, and template support 3633 for both tables. 3634 3635 iASL: Implemented compile-time validation of package objects returned by 3636 predefined names. This new feature validates static package objects 3637 returned by the various predefined names defined to return packages. Both 3638 object types and package lengths are validated, for both parent packages 3639 and sub-packages, if any. The code is similar in structure and behavior 3640 to 3641 the runtime repair mechanism within the AML interpreter and uses the 3642 existing predefined name information table. Adds a new file, aslprepkg.c. 3643 ACPICA BZ 938. 3644 3645 iASL: Implemented auto-detection of binary ACPI tables for disassembly. 3646 This feature detects a binary file with a valid ACPI table header and 3647 invokes the disassembler automatically. Eliminates the need to 3648 specifically invoke the disassembler with the -d option. ACPICA BZ 862. 3649 3650 iASL/Disassembler: Added several warnings for the case where there are 3651 unresolved control methods during the disassembly. This can potentially 3652 cause errors when the output file is compiled, because the disassembler 3653 assumes zero method arguments in these cases (it cannot determine the 3654 actual number of arguments without resolution/definition of the method). 3655 3656 Debugger: Added support to display all resources with a single command. 3657 Invocation of the resources command with no arguments will now display 3658 all 3659 resources within the current namespace. 3660 3661 AcpiHelp: Added descriptive text for each ACPICA exception code displayed 3662 via the -e option. 3663 3664 ---------------------------------------- 3665 17 January 2013. Summary of changes for version 20130117: 3666 3667 1) ACPICA Kernel-resident Subsystem: 3668 3669 Updated the AcpiGetSleepTypeData interface: Allow the \_Sx methods to 3670 return either 1 or 2 integers. Although the ACPI spec defines the \_Sx 3671 objects to return a package containing one integer, most BIOS code 3672 returns 3673 two integers and the previous code reflects that. However, we also need 3674 to 3675 support BIOS code that actually implements to the ACPI spec, and this 3676 change reflects this. 3677 3678 Fixed two issues with the ACPI_DEBUG_PRINT macros: 3679 1) Added the ACPI_DO_WHILE macro to the main DEBUG_PRINT helper macro for 3680 C compilers that require this support. 3681 2) Renamed the internal ACPI_DEBUG macro to ACPI_DO_DEBUG_PRINT since 3682 ACPI_DEBUG is already used by many of the various hosts. 3683 3684 Updated all ACPICA copyrights and signons to 2013. Added the 2013 3685 copyright to all module headers and signons, including the standard Linux 3686 header. This affects virtually every file in the ACPICA core subsystem, 3687 iASL compiler, all ACPICA utilities, and the test suites. 3688 3689 Example Code and Data Size: These are the sizes for the OS-independent 3690 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3691 debug version of the code includes the debug output trace mechanism and 3692 has a much larger code and data size. 3693 3694 Previous Release: 3695 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total 3696 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total 3697 Current Release: 3698 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total 3699 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total 3700 3701 3702 2) iASL Compiler/Disassembler and Tools: 3703 3704 Generic Unix OSL: Use a buffer to eliminate multiple vfprintf()s and 3705 prevent a possible fault on some hosts. Some C libraries modify the arg 3706 pointer parameter to vfprintf making it difficult to call it twice in the 3707 AcpiOsVprintf function. Use a local buffer to workaround this issue. This 3708 does not affect the Windows OSL since the Win C library does not modify 3709 the arg pointer. Chao Guan, Bob Moore. 3710 3711 iASL: Fixed a possible infinite loop when the maximum error count is 3712 reached. If an output file other than the .AML file is specified (such as 3713 a listing file), and the maximum number of errors is reached, do not 3714 attempt to flush data to the output file(s) as the compiler is aborting. 3715 This can cause an infinite loop as the max error count code essentially 3716 keeps calling itself. 3717 3718 iASL/Disassembler: Added an option (-in) to ignore NOOP 3719 opcodes/operators. 3720 Implemented for both the compiler and the disassembler. Often, the NOOP 3721 opcode is used as padding for packages that are changed dynamically by 3722 the 3723 BIOS. When disassembled and recompiled, these NOOPs will cause syntax 3724 errors. This option causes the disassembler to ignore all NOOP opcodes 3725 (0xA3), and it also causes the compiler to ignore all ASL source code 3726 NOOP 3727 statements as well. 3728 3729 Debugger: Enhanced the Sleep command to execute all sleep states. This 3730 change allows Sleep to be invoked with no arguments and causes the 3731 debugger to execute all of the sleep states, 0-5, automatically. 3732 3733 ---------------------------------------- 3734 20 December 2012. Summary of changes for version 20121220: 3735 3736 1) ACPICA Kernel-resident Subsystem: 3737 3738 Implemented a new interface, AcpiWalkResourceBuffer. This interface is an 3739 alternate entry point for AcpiWalkResources and improves the usability of 3740 the resource manager by accepting as input a buffer containing the output 3741 of either a _CRS, _PRS, or _AEI method. The key functionality is that the 3742 input buffer is not deleted by this interface so that it can be used by 3743 the host later. See the ACPICA reference for details. 3744 3745 Interpreter: Add a warning if a 64-bit constant appears in a 32-bit table 3746 (DSDT version < 2). The constant will be truncated and this warning 3747 reflects that behavior. 3748 3749 Resource Manager: Add support for the new ACPI 5.0 wake bit in the IRQ, 3750 ExtendedInterrupt, and GpioInt descriptors. This change adds support to 3751 both get and set the new wake bit in these descriptors, separately from 3752 the existing share bit. Reported by Aaron Lu. 3753 3754 Interpreter: Fix Store() when an implicit conversion is not possible. For 3755 example, in the cases such as a store of a string to an existing package 3756 object, implement the store as a CopyObject(). This is a small departure 3757 from the ACPI specification which states that the control method should 3758 be 3759 aborted in this case. However, the ASLTS suite depends on this behavior. 3760 3761 Performance improvement for the various FUNCTION_TRACE and DEBUG_PRINT 3762 macros: check if debug output is currently enabled as soon as possible to 3763 minimize performance impact if debug is in fact not enabled. 3764 3765 Source code restructuring: Cleanup to improve modularity. The following 3766 new files have been added: dbconvert.c, evhandler.c, nsprepkg.c, 3767 psopinfo.c, psobject.c, rsdumpinfo.c, utstring.c, and utownerid.c. 3768 Associated makefiles and project files have been updated. 3769 3770 Changed an exception code for LoadTable operator. For the case where one 3771 of the input strings is too long, change the returned exception code from 3772 AE_BAD_PARAMETER to AE_AML_STRING_LIMIT. 3773 3774 Fixed a possible memory leak in dispatcher error path. On error, delete 3775 the mutex object created during method mutex creation. Reported by 3776 tim.gardner (a] canonical.com. 3777 3778 Example Code and Data Size: These are the sizes for the OS-independent 3779 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3780 debug version of the code includes the debug output trace mechanism and 3781 has a much larger code and data size. 3782 3783 Previous Release: 3784 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total 3785 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 3786 Current Release: 3787 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total 3788 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total 3789 3790 3791 2) iASL Compiler/Disassembler and Tools: 3792 3793 iASL: Disallow a method call as argument to the ObjectType ASL operator. 3794 This change tracks an errata to the ACPI 5.0 document. The AML grammar 3795 will not allow the interpreter to differentiate between a method and a 3796 method invocation when these are used as an argument to the ObjectType 3797 operator. The ACPI specification change is to disallow a method 3798 invocation 3799 (UserTerm) for the ObjectType operator. 3800 3801 Finish support for the TPM2 and CSRT tables in the headers, table 3802 compiler, and disassembler. 3803 3804 Unix user-space OSL: Fix a problem with WaitSemaphore where the timeout 3805 always expires immediately if the semaphore is not available. The 3806 original 3807 code was using a relative-time timeout, but sem_timedwait requires the 3808 use 3809 of an absolute time. 3810 3811 iASL: Added a remark if the Timer() operator is used within a 32-bit 3812 table. This operator returns a 64-bit time value that will be truncated 3813 within a 32-bit table. 3814 3815 iASL Source code restructuring: Cleanup to improve modularity. The 3816 following new files have been added: aslhex.c, aslxref.c, aslnamesp.c, 3817 aslmethod.c, and aslfileio.c. Associated makefiles and project files have 3818 been updated. 3819 3820 3821 ---------------------------------------- 3822 14 November 2012. Summary of changes for version 20121114: 3823 3824 1) ACPICA Kernel-resident Subsystem: 3825 3826 Implemented a performance enhancement for ACPI/AML Package objects. This 3827 change greatly increases the performance of Package objects within the 3828 interpreter. It changes the processing of reference counts for packages 3829 by 3830 optimizing for the most common case where the package sub-objects are 3831 either Integers, Strings, or Buffers. Increases the overall performance 3832 of 3833 the ASLTS test suite by 1.5X (Increases the Slack Mode performance by 3834 2X.) 3835 Chao Guan. ACPICA BZ 943. 3836 3837 Implemented and deployed common macros to extract flag bits from resource 3838 descriptors. Improves readability and maintainability of the code. Fixes 3839 a 3840 problem with the UART serial bus descriptor for the number of data bits 3841 flags (was incorrectly 2 bits, should be 3). 3842 3843 Enhanced the ACPI_GETx and ACPI_SETx macros. Improved the implementation 3844 of the macros and changed the SETx macros to the style of (destination, 3845 source). Also added ACPI_CASTx companion macros. Lv Zheng. 3846 3847 Example Code and Data Size: These are the sizes for the OS-independent 3848 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3849 debug version of the code includes the debug output trace mechanism and 3850 has a much larger code and data size. 3851 3852 Previous Release: 3853 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total 3854 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 3855 Current Release: 3856 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total 3857 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 3858 3859 3860 2) iASL Compiler/Disassembler and Tools: 3861 3862 Disassembler: Added the new ACPI 5.0 interrupt sharing flags. This change 3863 adds the ShareAndWake and ExclusiveAndWake flags which were added to the 3864 Irq, Interrupt, and Gpio resource descriptors in ACPI 5.0. ACPICA BZ 986. 3865 3866 Disassembler: Fixed a problem with external declaration generation. Fixes 3867 a problem where an incorrect pathname could be generated for an external 3868 declaration if the original reference to the object includes leading 3869 carats (^). ACPICA BZ 984. 3870 3871 Debugger: Completed a major update for the Disassemble<method> command. 3872 This command was out-of-date and did not properly disassemble control 3873 methods that had any reasonable complexity. This fix brings the command 3874 up 3875 to the same level as the rest of the disassembler. Adds one new file, 3876 dmdeferred.c, which is existing code that is now common with the main 3877 disassembler and the debugger disassemble command. ACPICA MZ 978. 3878 3879 iASL: Moved the parser entry prototype to avoid a duplicate declaration. 3880 Newer versions of Bison emit this prototype, so moved the prototype out 3881 of 3882 the iASL header to where it is actually used in order to avoid a 3883 duplicate 3884 declaration. 3885 3886 iASL/Tools: Standardized use of the stream I/O functions: 3887 1) Ensure check for I/O error after every fopen/fread/fwrite 3888 2) Ensure proper order of size/count arguments for fread/fwrite 3889 3) Use test of (Actual != Requested) after all fwrite, and most fread 3890 4) Standardize I/O error messages 3891 Improves reliability and maintainability of the code. Bob Moore, Lv 3892 Zheng. 3893 ACPICA BZ 981. 3894 3895 Disassembler: Prevent duplicate External() statements. During generation 3896 of external statements, detect similar pathnames that are actually 3897 duplicates such as these: 3898 External (\ABCD) 3899 External (ABCD) 3900 Remove all leading '\' characters from pathnames during the external 3901 statement generation so that duplicates will be detected and tossed. 3902 ACPICA BZ 985. 3903 3904 Tools: Replace low-level I/O with stream I/O functions. Replace 3905 open/read/write/close with the stream I/O equivalents 3906 fopen/fread/fwrite/fclose for portability and performance. Lv Zheng, Bob 3907 Moore. 3908 3909 AcpiBin: Fix for the dump-to-hex function. Now correctly output the table 3910 name header so that AcpiXtract recognizes the output file/table. 3911 3912 iASL: Remove obsolete -2 option flag. Originally intended to force the 3913 compiler/disassembler into an ACPI 2.0 mode, this was never implemented 3914 and the entire concept is now obsolete. 3915 3916 ---------------------------------------- 3917 18 October 2012. Summary of changes for version 20121018: 3918 3919 3920 1) ACPICA Kernel-resident Subsystem: 3921 3922 Updated support for the ACPI 5.0 MPST table. Fixes some problems 3923 introduced by late changes to the table as it was added to the ACPI 5.0 3924 specification. Includes header, disassembler, and data table compiler 3925 support as well as a new version of the MPST template. 3926 3927 AcpiGetObjectInfo: Enhanced the device object support to include the ACPI 3928 5.0 _SUB method. Now calls _SUB in addition to the other PNP-related ID 3929 methods: _HID, _CID, and _UID. 3930 3931 Changed ACPI_DEVICE_ID to ACPI_PNP_DEVICE_ID. Also changed 3932 ACPI_DEVICE_ID_LIST to ACPI_PNP_DEVICE_ID_LIST. These changes prevent 3933 name collisions on hosts that reserve the *_DEVICE_ID (or *DeviceId) 3934 names for their various drivers. Affects the AcpiGetObjectInfo external 3935 interface, and other internal interfaces as well. 3936 3937 Added and deployed a new macro for ACPI_NAME management: ACPI_MOVE_NAME. 3938 This macro resolves to a simple 32-bit move of the 4-character ACPI_NAME 3939 on machines that support non-aligned transfers. Optimizes for this case 3940 rather than using a strncpy. With assistance from Zheng Lv. 3941 3942 Resource Manager: Small fix for buffer size calculation. Fixed a one byte 3943 error in the output buffer calculation. Feng Tang. ACPICA BZ 849. 3944 3945 Added a new debug print message for AML mutex objects that are force- 3946 released. At control method termination, any currently acquired mutex 3947 objects are force-released. Adds a new debug-only message for each one 3948 that is released. 3949 3950 Audited/updated all ACPICA return macros and the function debug depth 3951 counter: 1) Ensure that all functions that use the various TRACE macros 3952 also use the appropriate ACPICA return macros. 2) Ensure that all normal 3953 return statements surround the return expression (value) with parens to 3954 ensure consistency across the ACPICA code base. Guan Chao, Tang Feng, 3955 Zheng Lv, Bob Moore. ACPICA Bugzilla 972. 3956 3957 Global source code changes/maintenance: All extra lines at the start and 3958 end of each source file have been removed for consistency. Also, within 3959 comments, all new sentences start with a single space instead of a double 3960 space, again for consistency across the code base. 3961 3962 Example Code and Data Size: These are the sizes for the OS-independent 3963 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3964 debug version of the code includes the debug output trace mechanism and 3965 has a much larger code and data size. 3966 3967 Previous Release: 3968 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total 3969 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total 3970 Current Release: 3971 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total 3972 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 3973 3974 3975 2) iASL Compiler/Disassembler and Tools: 3976 3977 AcpiExec: Improved the algorithm used for memory leak/corruption 3978 detection. Added some intelligence to the code that maintains the global 3979 list of allocated memory. The list is now ordered by allocated memory 3980 address, significantly improving performance. When running AcpiExec on 3981 the ASLTS test suite, speed improvements of 3X to 5X are seen, depending 3982 on the platform and/or the environment. Note, this performance 3983 enhancement affects the AcpiExec utility only, not the kernel-resident 3984 ACPICA code. 3985 3986 Enhanced error reporting for invalid AML opcodes and bad ACPI_NAMEs. For 3987 the disassembler, dump the 48 bytes surrounding the invalid opcode. Fix 3988 incorrect table offset reported for invalid opcodes. Report the original 3989 32-bit value for bad ACPI_NAMEs (as well as the repaired name.) 3990 3991 Disassembler: Enhanced the -vt option to emit the binary table data in 3992 hex format to assist with debugging. 3993 3994 Fixed a potential filename buffer overflow in osunixdir.c. Increased the 3995 size of file structure. Colin Ian King. 3996 3997 ---------------------------------------- 3998 13 September 2012. Summary of changes for version 20120913: 3999 4000 4001 1) ACPICA Kernel-resident Subsystem: 4002 4003 ACPI 5.0: Added two new notify types for the Hardware Error Notification 4004 Structure within the Hardware Error Source Table (HEST) table -- CMCI(5) 4005 and 4006 MCE(6). 4007 4008 Table Manager: Merged/removed duplicate code in the root table resize 4009 functions. One function is external, the other is internal. Lv Zheng, 4010 ACPICA 4011 BZ 846. 4012 4013 Makefiles: Completely removed the obsolete "Linux" makefiles under 4014 acpica/generate/linux. These makefiles are obsolete and have been 4015 replaced 4016 by 4017 the generic unix makefiles under acpica/generate/unix. 4018 4019 Makefiles: Ensure that binary files always copied properly. Minor rule 4020 change 4021 to ensure that the final binary output files are always copied up to the 4022 appropriate binary directory (bin32 or bin64.) 4023 4024 Example Code and Data Size: These are the sizes for the OS-independent 4025 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4026 debug 4027 version of the code includes the debug output trace mechanism and has a 4028 much 4029 larger code and data size. 4030 4031 Previous Release: 4032 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total 4033 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total 4034 Current Release: 4035 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total 4036 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total 4037 4038 4039 2) iASL Compiler/Disassembler and Tools: 4040 4041 Disassembler: Fixed a possible fault during the disassembly of resource 4042 descriptors when a second parse is required because of the invocation of 4043 external control methods within the table. With assistance from 4044 adq (a] lidskialf.net. ACPICA BZ 976. 4045 4046 iASL: Fixed a namepath optimization problem. An error can occur if the 4047 parse 4048 node that contains the namepath to be optimized does not have a parent 4049 node 4050 that is a named object. This change fixes the problem. 4051 4052 iASL: Fixed a regression where the AML file is not deleted on errors. The 4053 AML 4054 output file should be deleted if there are any errors during the 4055 compiler. 4056 The 4057 only exception is if the -f (force output) option is used. ACPICA BZ 974. 4058 4059 iASL: Added a feature to automatically increase internal line buffer 4060 sizes. 4061 Via realloc(), automatically increase the internal line buffer sizes as 4062 necessary to support very long source code lines. The current version of 4063 the 4064 preprocessor requires a buffer long enough to contain full source code 4065 lines. 4066 This change increases the line buffer(s) if the input lines go beyond the 4067 current buffer size. This eliminates errors that occurred when a source 4068 code 4069 line was longer than the buffer. 4070 4071 iASL: Fixed a problem with constant folding in method declarations. The 4072 SyncLevel term is a ByteConstExpr, and incorrect code would be generated 4073 if a 4074 Type3 opcode was used. 4075 4076 Debugger: Improved command help support. For incorrect argument count, 4077 display 4078 full help for the command. For help command itself, allow an argument to 4079 specify a command. 4080 4081 Test Suites: Several bug fixes for the ASLTS suite reduces the number of 4082 errors during execution of the suite. Guan Chao. 4083 4084 ---------------------------------------- 4085 16 August 2012. Summary of changes for version 20120816: 4086 4087 4088 1) ACPICA Kernel-resident Subsystem: 4089 4090 Removed all use of the deprecated _GTS and _BFS predefined methods. The 4091 _GTS 4092 (Going To Sleep) and _BFS (Back From Sleep) methods are essentially 4093 deprecated and will probably be removed from the ACPI specification. 4094 Windows 4095 does not invoke them, and reportedly never will. The final nail in the 4096 coffin 4097 is that the ACPI specification states that these methods must be run with 4098 interrupts off, which is not going to happen in a kernel interpreter. 4099 Note: 4100 Linux has removed all use of the methods also. It was discovered that 4101 invoking these functions caused failures on some machines, probably 4102 because 4103 they were never tested since Windows does not call them. Affects two 4104 external 4105 interfaces, AcpiEnterSleepState and AcpiLeaveSleepStatePrep. Tang Feng. 4106 ACPICA BZ 969. 4107 4108 Implemented support for complex bit-packed buffers returned from the _PLD 4109 (Physical Location of Device) predefined method. Adds a new external 4110 interface, AcpiDecodePldBuffer that parses the buffer into a more usable 4111 C 4112 structure. Note: C Bitfields cannot be used for this type of predefined 4113 structure since the memory layout of individual bitfields is not defined 4114 by 4115 the C language. In addition, there are endian concerns where a compiler 4116 will 4117 change the bitfield ordering based on the machine type. The new ACPICA 4118 interface eliminates these issues, and should be called after _PLD is 4119 executed. ACPICA BZ 954. 4120 4121 Implemented a change to allow a scope change to root (via "Scope (\)") 4122 during 4123 execution of module-level ASL code (code that is executed at table load 4124 time.) Lin Ming. 4125 4126 Added the Windows8/Server2012 string for the _OSI method. This change 4127 adds 4128 a 4129 new _OSI string, "Windows 2012" for both Windows 8 and Windows Server 4130 2012. 4131 4132 Added header support for the new ACPI tables DBG2 (Debug Port Table Type 4133 2) 4134 and CSRT (Core System Resource Table). 4135 4136 Added struct header support for the _FDE, _GRT, _GTM, and _SRT predefined 4137 names. This simplifies access to the buffers returned by these predefined 4138 names. Adds a new file, include/acbuffer.h. ACPICA BZ 956. 4139 4140 GPE support: Removed an extraneous parameter from the various low-level 4141 internal GPE functions. Tang Feng. 4142 4143 Removed the linux makefiles from the unix packages. The generate/linux 4144 makefiles are obsolete and have been removed from the unix tarball 4145 release 4146 packages. The replacement makefiles are under generate/unix, and there is 4147 a 4148 top-level makefile under the main acpica directory. ACPICA BZ 967, 912. 4149 4150 Updates for Unix makefiles: 4151 1) Add -D_FORTIFY_SOURCE=2 for gcc generation. Arjan van de Ven. 4152 2) Update linker flags (move to end of command line) for AcpiExec 4153 utility. 4154 Guan Chao. 4155 4156 Split ACPICA initialization functions to new file, utxfinit.c. Split from 4157 utxface.c to improve modularity and reduce file size. 4158 4159 Example Code and Data Size: These are the sizes for the OS-independent 4160 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4161 debug version of the code includes the debug output trace mechanism and 4162 has a 4163 much larger code and data size. 4164 4165 Previous Release: 4166 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total 4167 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total 4168 Current Release: 4169 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total 4170 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total 4171 4172 4173 2) iASL Compiler/Disassembler and Tools: 4174 4175 iASL: Fixed a problem with constant folding for fixed-length constant 4176 expressions. The constant-folding code was not being invoked for constant 4177 expressions that allow the use of type 3/4/5 opcodes to generate 4178 constants 4179 for expressions such as ByteConstExpr, WordConstExpr, etc. This could 4180 result 4181 in the generation of invalid AML bytecode. ACPICA BZ 970. 4182 4183 iASL: Fixed a generation issue on newer versions of Bison. Newer versions 4184 apparently automatically emit some of the necessary externals. This 4185 change 4186 handles these versions in order to eliminate generation warnings. 4187 4188 Disassembler: Added support to decode the DBG2 and CSRT ACPI tables. 4189 4190 Disassembler: Add support to decode _PLD buffers. The decoded buffer 4191 appears 4192 within comments in the output file. 4193 4194 Debugger: Fixed a regression with the "Threads" command where 4195 AE_BAD_PARAMETER was always returned. 4196 4197 ---------------------------------------- 4198 11 July 2012. Summary of changes for version 20120711: 4199 4200 1) ACPICA Kernel-resident Subsystem: 4201 4202 Fixed a possible fault in the return package object repair code. Fixes a 4203 problem that can occur when a lone package object is wrapped with an 4204 outer 4205 package object in order to force conformance to the ACPI specification. 4206 Can 4207 affect these predefined names: _ALR, _MLS, _PSS, _TRT, _TSS, _PRT, _HPX, 4208 _DLM, 4209 _CSD, _PSD, _TSD. 4210 4211 Removed code to disable/enable bus master arbitration (ARB_DIS bit in the 4212 PM2_CNT register) in the ACPICA sleep/wake interfaces. Management of the 4213 ARB_DIS bit must be implemented in the host-dependent C3 processor power 4214 state 4215 support. Note, ARB_DIS is obsolete and only applies to older chipsets, 4216 both 4217 Intel and other vendors. (for Intel: ICH4-M and earlier) 4218 4219 This change removes the code to disable/enable bus master arbitration 4220 during 4221 suspend/resume. Use of the ARB_DIS bit in the optional PM2_CNT register 4222 causes 4223 resume problems on some machines. The change has been in use for over 4224 seven 4225 years within Linux. 4226 4227 Implemented two new external interfaces to support host-directed dynamic 4228 ACPI 4229 table load and unload. They are intended to simplify the host 4230 implementation 4231 of hot-plug support: 4232 AcpiLoadTable: Load an SSDT from a buffer into the namespace. 4233 AcpiUnloadParentTable: Unload an SSDT via a named object owned by the 4234 table. 4235 See the ACPICA reference for additional details. Adds one new file, 4236 components/tables/tbxfload.c 4237 4238 Implemented and deployed two new interfaces for errors and warnings that 4239 are 4240 known to be caused by BIOS/firmware issues: 4241 AcpiBiosError: Prints "ACPI Firmware Error" message. 4242 AcpiBiosWarning: Prints "ACPI Firmware Warning" message. 4243 Deployed these new interfaces in the ACPICA Table Manager code for ACPI 4244 table 4245 and FADT errors. Additional deployment to be completed as appropriate in 4246 the 4247 future. The associated conditional macros are ACPI_BIOS_ERROR and 4248 ACPI_BIOS_WARNING. See the ACPICA reference for additional details. 4249 ACPICA 4250 BZ 4251 843. 4252 4253 Implicit notify support: ensure that no memory allocation occurs within a 4254 critical region. This fix moves a memory allocation outside of the time 4255 that a 4256 spinlock is held. Fixes issues on systems that do not allow this 4257 behavior. 4258 Jung-uk Kim. 4259 4260 Split exception code utilities and tables into a new file, 4261 utilities/utexcep.c 4262 4263 Example Code and Data Size: These are the sizes for the OS-independent 4264 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4265 debug 4266 version of the code includes the debug output trace mechanism and has a 4267 much 4268 larger code and data size. 4269 4270 Previous Release: 4271 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total 4272 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total 4273 Current Release: 4274 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total 4275 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total 4276 4277 4278 2) iASL Compiler/Disassembler and Tools: 4279 4280 iASL: Fixed a parser problem for hosts where EOF is defined as -1 instead 4281 of 4282 0. Jung-uk Kim. 4283 4284 Debugger: Enhanced the "tables" command to emit additional information 4285 about 4286 the current set of ACPI tables, including the owner ID and flags decode. 4287 4288 Debugger: Reimplemented the "unload" command to use the new 4289 AcpiUnloadParentTable external interface. This command was disable 4290 previously 4291 due to need for an unload interface. 4292 4293 AcpiHelp: Added a new option to decode ACPICA exception codes. The -e 4294 option 4295 will decode 16-bit hex status codes (ACPI_STATUS) to name strings. 4296 4297 ---------------------------------------- 4298 20 June 2012. Summary of changes for version 20120620: 4299 4300 4301 1) ACPICA Kernel-resident Subsystem: 4302 4303 Implemented support to expand the "implicit notify" feature to allow 4304 multiple 4305 devices to be notified by a single GPE. This feature automatically 4306 generates a 4307 runtime device notification in the absence of a BIOS-provided GPE control 4308 method (_Lxx/_Exx) or a host-installed handler for the GPE. Implicit 4309 notify is 4310 provided by ACPICA for Windows compatibility, and is a workaround for 4311 BIOS 4312 AML 4313 code errors. See the description of the AcpiSetupGpeForWake interface in 4314 the 4315 APCICA reference. Bob Moore, Rafael Wysocki. ACPICA BZ 918. 4316 4317 Changed some comments and internal function names to simplify and ensure 4318 correctness of the Linux code translation. No functional changes. 4319 4320 Example Code and Data Size: These are the sizes for the OS-independent 4321 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4322 debug 4323 version of the code includes the debug output trace mechanism and has a 4324 much 4325 larger code and data size. 4326 4327 Previous Release: 4328 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total 4329 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total 4330 Current Release: 4331 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total 4332 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total 4333 4334 4335 2) iASL Compiler/Disassembler and Tools: 4336 4337 Disassembler: Added support to emit short, commented descriptions for the 4338 ACPI 4339 predefined names in order to improve the readability of the disassembled 4340 output. ACPICA BZ 959. Changes include: 4341 1) Emit descriptions for all standard predefined names (_INI, _STA, 4342 _PRW, 4343 etc.) 4344 2) Emit generic descriptions for the special names (_Exx, _Qxx, etc.) 4345 3) Emit descriptions for the resource descriptor names (_MIN, _LEN, 4346 etc.) 4347 4348 AcpiSrc: Fixed several long-standing Linux code translation issues. 4349 Argument 4350 descriptions in function headers are now translated properly to lower 4351 case 4352 and 4353 underscores. ACPICA BZ 961. Also fixes translation problems such as 4354 these: 4355 (old -> new) 4356 i_aSL -> iASL 4357 00-7_f -> 00-7F 4358 16_k -> 16K 4359 local_fADT -> local_FADT 4360 execute_oSI -> execute_OSI 4361 4362 iASL: Fixed a problem where null bytes were inadvertently emitted into 4363 some 4364 listing files. 4365 4366 iASL: Added the existing debug options to the standard help screen. There 4367 are 4368 no longer two different help screens. ACPICA BZ 957. 4369 4370 AcpiHelp: Fixed some typos in the various predefined name descriptions. 4371 Also 4372 expand some of the descriptions where appropriate. 4373 4374 iASL: Fixed the -ot option (display compile times/statistics). Was not 4375 working 4376 properly for standard output; only worked for the debug file case. 4377 4378 ---------------------------------------- 4379 18 May 2012. Summary of changes for version 20120518: 4380 4381 4382 1) ACPICA Core Subsystem: 4383 4384 Added a new OSL interface, AcpiOsWaitEventsComplete. This interface is 4385 defined 4386 to block until asynchronous events such as notifies and GPEs have 4387 completed. 4388 Within ACPICA, it is only called before a notify or GPE handler is 4389 removed/uninstalled. It also may be useful for the host OS within related 4390 drivers such as the Embedded Controller driver. See the ACPICA reference 4391 for 4392 additional information. ACPICA BZ 868. 4393 4394 ACPI Tables: Added a new error message for a possible overflow failure 4395 during 4396 the conversion of FADT 32-bit legacy register addresses to internal 4397 common 4398 64- 4399 bit GAS structure representation. The GAS has a one-byte "bit length" 4400 field, 4401 thus limiting the register length to 255 bits. ACPICA BZ 953. 4402 4403 Example Code and Data Size: These are the sizes for the OS-independent 4404 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4405 debug 4406 version of the code includes the debug output trace mechanism and has a 4407 much 4408 larger code and data size. 4409 4410 Previous Release: 4411 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 4412 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total 4413 Current Release: 4414 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total 4415 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total 4416 4417 4418 2) iASL Compiler/Disassembler and Tools: 4419 4420 iASL: Added the ACPI 5.0 "PCC" keyword for use in the Register() ASL 4421 macro. 4422 This keyword was added late in the ACPI 5.0 release cycle and was not 4423 implemented until now. 4424 4425 Disassembler: Added support for Operation Region externals. Adds missing 4426 support for operation regions that are defined in another table, and 4427 referenced locally via a Field or BankField ASL operator. Now generates 4428 the 4429 correct External statement. 4430 4431 Disassembler: Several additional fixes for the External() statement 4432 generation 4433 related to some ASL operators. Also, order the External() statements 4434 alphabetically in the disassembler output. Fixes the External() 4435 generation 4436 for 4437 the Create* field, Alias, and Scope operators: 4438 1) Create* buffer field operators - fix type mismatch warning on 4439 disassembly 4440 2) Alias - implement missing External support 4441 3) Scope - fix to make sure all necessary externals are emitted. 4442 4443 iASL: Improved pathname support. For include files, merge the prefix 4444 pathname 4445 with the file pathname and eliminate unnecessary components. Convert 4446 backslashes in all pathnames to forward slashes, for readability. Include 4447 file 4448 pathname changes affect both #include and Include() type operators. 4449 4450 iASL/DTC/Preprocessor: Gracefully handle early EOF. Handle an EOF at the 4451 end 4452 of a valid line by inserting a newline and then returning the EOF during 4453 the 4454 next call to GetNextLine. Prevents the line from being ignored due to EOF 4455 condition. 4456 4457 iASL: Implemented some changes to enhance the IDE support (-vi option.) 4458 Error 4459 and Warning messages are now correctly recognized for both the source 4460 code 4461 browser and the global error and warning counts. 4462 4463 ---------------------------------------- 4464 20 April 2012. Summary of changes for version 20120420: 4465 4466 4467 1) ACPICA Core Subsystem: 4468 4469 Implemented support for multiple notify handlers. This change adds 4470 support 4471 to 4472 allow multiple system and device notify handlers on Device, Thermal Zone, 4473 and 4474 Processor objects. This can simplify the host OS notification 4475 implementation. 4476 Also re-worked and restructured the entire notify support code to 4477 simplify 4478 handler installation, handler removal, notify event queuing, and notify 4479 dispatch to handler(s). Note: there can still only be two global notify 4480 handlers - one for system notifies and one for device notifies. There are 4481 no 4482 changes to the existing handler install/remove interfaces. Lin Ming, Bob 4483 Moore, Rafael Wysocki. 4484 4485 Fixed a regression in the package repair code where the object reference 4486 count was calculated incorrectly. Regression was introduced in the commit 4487 "Support to add Package wrappers". 4488 4489 Fixed a couple possible memory leaks in the AML parser, in the error 4490 recovery 4491 path. Jesper Juhl, Lin Ming. 4492 4493 Example Code and Data Size: These are the sizes for the OS-independent 4494 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4495 debug version of the code includes the debug output trace mechanism and 4496 has a 4497 much larger code and data size. 4498 4499 Previous Release: 4500 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 4501 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 4502 Current Release: 4503 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 4504 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total 4505 4506 4507 2) iASL Compiler/Disassembler and Tools: 4508 4509 iASL: Fixed a problem with the resource descriptor support where the 4510 length 4511 of the StartDependentFn and StartDependentFnNoPrio descriptors were not 4512 included in cumulative descriptor offset, resulting in incorrect values 4513 for 4514 resource tags within resource descriptors appearing after a 4515 StartDependent* 4516 descriptor. Reported by Petr Vandrovec. ACPICA BZ 949. 4517 4518 iASL and Preprocessor: Implemented full support for the #line directive 4519 to 4520 correctly track original source file line numbers through the .i 4521 preprocessor 4522 output file - for error and warning messages. 4523 4524 iASL: Expand the allowable byte constants for address space IDs. 4525 Previously, 4526 the allowable range was 0x80-0xFF (user-defined spaces), now the range is 4527 0x0A-0xFF to allow for custom and new IDs without changing the compiler. 4528 4529 iASL: Add option to treat all warnings as errors (-we). ACPICA BZ 948. 4530 4531 iASL: Add option to completely disable the preprocessor (-Pn). 4532 4533 iASL: Now emit all error/warning messages to standard error (stderr) by 4534 default (instead of the previous stdout). 4535 4536 ASL Test Suite (ASLTS): Reduce iASL warnings due to use of Switch(). 4537 Update 4538 for resource descriptor offset fix above. Update/cleanup error output 4539 routines. Enable and send iASL errors/warnings to an error logfile 4540 (error.txt). Send all other iASL output to a logfile (compiler.txt). 4541 Fixed 4542 several extraneous "unrecognized operator" messages. 4543 4544 ---------------------------------------- 4545 20 March 2012. Summary of changes for version 20120320: 4546 4547 4548 1) ACPICA Core Subsystem: 4549 4550 Enhanced the sleep/wake interfaces to optionally execute the _GTS method 4551 (Going To Sleep) and the _BFS method (Back From Sleep). Windows 4552 apparently 4553 does not execute these methods, and therefore these methods are often 4554 untested. It has been seen on some systems where the execution of these 4555 methods causes errors and also prevents the machine from entering S5. It 4556 is 4557 therefore suggested that host operating systems do not execute these 4558 methods 4559 by default. In the future, perhaps these methods can be optionally 4560 executed 4561 based on the age of the system and/or what is the newest version of 4562 Windows 4563 that the BIOS asks for via _OSI. Changed interfaces: AcpiEnterSleepState 4564 and 4565 AcpileaveSleepStatePrep. See the ACPICA reference and Linux BZ 13041. Lin 4566 Ming. 4567 4568 Fixed a problem where the length of the local/common FADT was set too 4569 early. 4570 The local FADT table length cannot be set to the common length until the 4571 original length has been examined. There is code that checks the table 4572 length 4573 and sets various fields appropriately. This can affect older machines 4574 with 4575 early FADT versions. For example, this can cause inadvertent writes to 4576 the 4577 CST_CNT register. Julian Anastasov. 4578 4579 Fixed a mapping issue related to a physical table override. Use the 4580 deferred 4581 mapping mechanism for tables loaded via the physical override OSL 4582 interface. 4583 This allows for early mapping before the virtual memory manager is 4584 available. 4585 Thomas Renninger, Bob Moore. 4586 4587 Enhanced the automatic return-object repair code: Repair a common problem 4588 with 4589 predefined methods that are defined to return a variable-length Package 4590 of 4591 sub-objects. If there is only one sub-object, some BIOS ASL code 4592 mistakenly 4593 simply returns the single object instead of a Package with one sub- 4594 object. 4595 This new support will repair this error by wrapping a Package object 4596 around 4597 the original object, creating the correct and expected Package with one 4598 sub- 4599 object. Names that can be repaired in this manner include: _ALR, _CSD, 4600 _HPX, 4601 _MLS, _PLD, _PRT, _PSS, _TRT, _TSS, _BCL, _DOD, _FIX, and _Sx. ACPICA BZ 4602 939. 4603 4604 Changed the exception code returned for invalid ACPI paths passed as 4605 parameters to external interfaces such as AcpiEvaluateObject. Was 4606 AE_BAD_PARAMETER, now is the more sensible AE_BAD_PATHNAME. 4607 4608 Example Code and Data Size: These are the sizes for the OS-independent 4609 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4610 debug 4611 version of the code includes the debug output trace mechanism and has a 4612 much 4613 larger code and data size. 4614 4615 Previous Release: 4616 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total 4617 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 4618 Current Release: 4619 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 4620 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 4621 4622 4623 2) iASL Compiler/Disassembler and Tools: 4624 4625 iASL: Added the infrastructure and initial implementation of a integrated 4626 C- 4627 like preprocessor. This will simplify BIOS development process by 4628 eliminating 4629 the need for a separate preprocessing step during builds. On Windows, it 4630 also 4631 eliminates the need to install a separate C compiler. ACPICA BZ 761. Some 4632 features including full #define() macro support are still under 4633 development. 4634 These preprocessor directives are supported: 4635 #define 4636 #elif 4637 #else 4638 #endif 4639 #error 4640 #if 4641 #ifdef 4642 #ifndef 4643 #include 4644 #pragma message 4645 #undef 4646 #warning 4647 In addition, these new command line options are supported: 4648 -D <symbol> Define symbol for preprocessor use 4649 -li Create preprocessed output file (*.i) 4650 -P Preprocess only and create preprocessor output file (*.i) 4651 4652 Table Compiler: Fixed a problem where the equals operator within an 4653 expression 4654 did not work properly. 4655 4656 Updated iASL to use the current versions of Bison/Flex. Updated the 4657 Windows 4658 project file to invoke these tools from the standard location. ACPICA BZ 4659 904. 4660 Versions supported: 4661 Flex for Windows: V2.5.4 4662 Bison for Windows: V2.4.1 4663 4664 ---------------------------------------- 4665 15 February 2012. Summary of changes for version 20120215: 4666 4667 4668 1) ACPICA Core Subsystem: 4669 4670 There have been some major changes to the sleep/wake support code, as 4671 described below (a - e). 4672 4673 a) The AcpiLeaveSleepState has been split into two interfaces, similar to 4674 AcpiEnterSleepStatePrep and AcpiEnterSleepState. The new interface is 4675 AcpiLeaveSleepStatePrep. This allows the host to perform actions between 4676 the 4677 time the _BFS method is called and the _WAK method is called. NOTE: all 4678 hosts 4679 must update their wake/resume code or else sleep/wake will not work 4680 properly. 4681 Rafael Wysocki. 4682 4683 b) In AcpiLeaveSleepState, now enable all runtime GPEs before calling the 4684 _WAK 4685 method. Some machines require that the GPEs are enabled before the _WAK 4686 method 4687 is executed. Thomas Renninger. 4688 4689 c) In AcpiLeaveSleepState, now always clear the WAK_STS (wake status) 4690 bit. 4691 Some BIOS code assumes that WAK_STS will be cleared on resume and use it 4692 to 4693 determine whether the system is rebooting or resuming. Matthew Garrett. 4694 4695 d) Move the invocations of _GTS (Going To Sleep) and _BFS (Back From 4696 Sleep) to 4697 match the ACPI specification requirement. Rafael Wysocki. 4698 4699 e) Implemented full support for the ACPI 5.0 SleepStatus and SleepControl 4700 registers within the V5 FADT. This support adds two new files: 4701 hardware/hwesleep.c implements the support for the new registers. Moved 4702 all 4703 sleep/wake external interfaces to hardware/hwxfsleep.c. 4704 4705 4706 Added a new OSL interface for ACPI table overrides, 4707 AcpiOsPhysicalTableOverride. This interface allows the host to override a 4708 table via a physical address, instead of the logical address required by 4709 AcpiOsTableOverride. This simplifies the host implementation. Initial 4710 implementation by Thomas Renninger. The ACPICA implementation creates a 4711 single 4712 shared function for table overrides that attempts both a logical and a 4713 physical override. 4714 4715 Expanded the OSL memory read/write interfaces to 64-bit data 4716 (AcpiOsReadMemory, AcpiOsWriteMemory.) This enables full 64-bit memory 4717 transfer support for GAS register structures passed to AcpiRead and 4718 AcpiWrite. 4719 4720 Implemented the ACPI_REDUCED_HARDWARE option to allow the creation of a 4721 custom 4722 build of ACPICA that supports only the ACPI 5.0 reduced hardware (SoC) 4723 model. 4724 See the ACPICA reference for details. ACPICA BZ 942. This option removes 4725 about 4726 10% of the code and 5% of the static data, and the following hardware 4727 ACPI 4728 features become unavailable: 4729 PM Event and Control registers 4730 SCI interrupt (and handler) 4731 Fixed Events 4732 General Purpose Events (GPEs) 4733 Global Lock 4734 ACPI PM timer 4735 FACS table (Waking vectors and Global Lock) 4736 4737 Updated the unix tarball directory structure to match the ACPICA git 4738 source 4739 tree. This ensures that the generic unix makefiles work properly (in 4740 generate/unix). Also updated the Linux makefiles to match. ACPICA BZ 4741 867. 4742 4743 Updated the return value of the _REV predefined method to integer value 5 4744 to 4745 reflect ACPI 5.0 support. 4746 4747 Moved the external ACPI PM timer interface prototypes to the public 4748 acpixf.h 4749 file where they belong. 4750 4751 Example Code and Data Size: These are the sizes for the OS-independent 4752 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4753 debug 4754 version of the code includes the debug output trace mechanism and has a 4755 much 4756 larger code and data size. 4757 4758 Previous Release: 4759 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total 4760 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total 4761 Current Release: 4762 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total 4763 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 4764 4765 4766 2) iASL Compiler/Disassembler and Tools: 4767 4768 Disassembler: Fixed a problem with the new ACPI 5.0 serial resource 4769 descriptors (I2C, SPI, UART) where the resource produce/consumer bit was 4770 incorrectly displayed. 4771 4772 AcpiHelp: Add display of ACPI/PNP device IDs that are defined in the ACPI 4773 specification. 4774 4775 ---------------------------------------- 4776 11 January 2012. Summary of changes for version 20120111: 4777 4778 4779 1) ACPICA Core Subsystem: 4780 4781 Implemented a new mechanism to allow host device drivers to check for 4782 address 4783 range conflicts with ACPI Operation Regions. Both SystemMemory and 4784 SystemIO 4785 address spaces are supported. A new external interface, 4786 AcpiCheckAddressRange, 4787 allows drivers to check an address range against the ACPI namespace. See 4788 the 4789 ACPICA reference for additional details. Adds one new file, 4790 utilities/utaddress.c. Lin Ming, Bob Moore. 4791 4792 Fixed several issues with the ACPI 5.0 FADT support: Add the sleep 4793 Control 4794 and 4795 Status registers, update the ACPI 5.0 flags, and update internal data 4796 structures to handle an FADT larger than 256 bytes. The size of the ACPI 4797 5.0 4798 FADT is 268 bytes. 4799 4800 Updated all ACPICA copyrights and signons to 2012. Added the 2012 4801 copyright to 4802 all module headers and signons, including the standard Linux header. This 4803 affects virtually every file in the ACPICA core subsystem, iASL compiler, 4804 and 4805 all ACPICA utilities. 4806 4807 Example Code and Data Size: These are the sizes for the OS-independent 4808 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4809 debug 4810 version of the code includes the debug output trace mechanism and has a 4811 much 4812 larger code and data size. 4813 4814 Previous Release: 4815 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total 4816 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total 4817 Current Release: 4818 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total 4819 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total 4820 4821 4822 2) iASL Compiler/Disassembler and Tools: 4823 4824 Disassembler: fixed a problem with the automatic resource tag generation 4825 support. Fixes a problem where the resource tags are inadvertently not 4826 constructed if the table being disassembled contains external references 4827 to 4828 control methods. Moved the actual construction of the tags to after the 4829 final 4830 namespace is constructed (after 2nd parse is invoked due to external 4831 control 4832 method references.) ACPICA BZ 941. 4833 4834 Table Compiler: Make all "generic" operators caseless. These are the 4835 operators 4836 like UINT8, String, etc. Making these caseless improves ease-of-use. 4837 ACPICA BZ 4838 934. 4839 4840 ---------------------------------------- 4841 23 November 2011. Summary of changes for version 20111123: 4842 4843 0) ACPI 5.0 Support: 4844 4845 This release contains full support for the ACPI 5.0 specification, as 4846 summarized below. 4847 4848 Reduced Hardware Support: 4849 ------------------------- 4850 4851 This support allows for ACPI systems without the usual ACPI hardware. 4852 This 4853 support is enabled by a flag in the revision 5 FADT. If it is set, ACPICA 4854 will 4855 not attempt to initialize or use any of the usual ACPI hardware. Note, 4856 when 4857 this flag is set, all of the following ACPI hardware is assumed to be not 4858 present and is not initialized or accessed: 4859 4860 General Purpose Events (GPEs) 4861 Fixed Events (PM1a/PM1b and PM Control) 4862 Power Management Timer and Console Buttons (power/sleep) 4863 Real-time Clock Alarm 4864 Global Lock 4865 System Control Interrupt (SCI) 4866 The FACS is assumed to be non-existent 4867 4868 ACPI Tables: 4869 ------------ 4870 4871 All new tables and updates to existing tables are fully supported in the 4872 ACPICA headers (for use by device drivers), the disassembler, and the 4873 iASL 4874 Data Table Compiler. ACPI 5.0 defines these new tables: 4875 4876 BGRT /* Boot Graphics Resource Table */ 4877 DRTM /* Dynamic Root of Trust for Measurement table */ 4878 FPDT /* Firmware Performance Data Table */ 4879 GTDT /* Generic Timer Description Table */ 4880 MPST /* Memory Power State Table */ 4881 PCCT /* Platform Communications Channel Table */ 4882 PMTT /* Platform Memory Topology Table */ 4883 RASF /* RAS Feature table */ 4884 4885 Operation Regions/SpaceIDs: 4886 --------------------------- 4887 4888 All new operation regions are fully supported by the iASL compiler, the 4889 disassembler, and the ACPICA runtime code (for dispatch to region 4890 handlers.) 4891 The new operation region Space IDs are: 4892 4893 GeneralPurposeIo 4894 GenericSerialBus 4895 4896 Resource Descriptors: 4897 --------------------- 4898 4899 All new ASL resource descriptors are fully supported by the iASL 4900 compiler, 4901 the 4902 ASL/AML disassembler, and the ACPICA runtime Resource Manager code 4903 (including 4904 all new predefined resource tags). New descriptors are: 4905 4906 FixedDma 4907 GpioIo 4908 GpioInt 4909 I2cSerialBus 4910 SpiSerialBus 4911 UartSerialBus 4912 4913 ASL/AML Operators, New and Modified: 4914 ------------------------------------ 4915 4916 One new operator is added, the Connection operator, which is used to 4917 associate 4918 a GeneralPurposeIo or GenericSerialBus resource descriptor with 4919 individual 4920 field objects within an operation region. Several new protocols are 4921 associated 4922 with the AccessAs operator. All are fully supported by the iASL compiler, 4923 disassembler, and runtime ACPICA AML interpreter: 4924 4925 Connection // Declare Field Connection 4926 attributes 4927 AccessAs: AttribBytes (n) // Read/Write N-Bytes Protocol 4928 AccessAs: AttribRawBytes (n) // Raw Read/Write N-Bytes 4929 Protocol 4930 AccessAs: AttribRawProcessBytes (n) // Raw Process Call Protocol 4931 RawDataBuffer // Data type for Vendor Data 4932 fields 4933 4934 Predefined ASL/AML Objects: 4935 --------------------------- 4936 4937 All new predefined objects/control-methods are supported by the iASL 4938 compiler 4939 and the ACPICA runtime validation/repair (arguments and return values.) 4940 New 4941 predefined names include the following: 4942 4943 Standard Predefined Names (Objects or Control Methods): 4944 _AEI, _CLS, _CPC, _CWS, _DEP, 4945 _DLM, _EVT, _GCP, _CRT, _GWS, 4946 _HRV, _PRE, _PSE, _SRT, _SUB. 4947 4948 Resource Tags (Names used to access individual fields within resource 4949 descriptors): 4950 _DBT, _DPL, _DRS, _END, _FLC, 4951 _IOR, _LIN, _MOD, _PAR, _PHA, 4952 _PIN, _PPI, _POL, _RXL, _SLV, 4953 _SPE, _STB, _TXL, _VEN. 4954 4955 ACPICA External Interfaces: 4956 --------------------------- 4957 4958 Several new interfaces have been defined for use by ACPI-related device 4959 drivers and other host OS services: 4960 4961 AcpiAcquireMutex and AcpiReleaseMutex: These interfaces allow the host OS 4962 to 4963 acquire and release AML mutexes that are defined in the DSDT/SSDT tables 4964 provided by the BIOS. They are intended to be used in conjunction with 4965 the 4966 ACPI 5.0 _DLM (Device Lock Method) in order to provide transaction-level 4967 mutual exclusion with the AML code/interpreter. 4968 4969 AcpiGetEventResources: Returns the (formatted) resource descriptors as 4970 defined 4971 by the ACPI 5.0 _AEI object (ACPI Event Information). This object 4972 provides 4973 resource descriptors associated with hardware-reduced platform events, 4974 similar 4975 to the AcpiGetCurrentResources interface. 4976 4977 Operation Region Handlers: For General Purpose IO and Generic Serial Bus 4978 operation regions, information about the Connection() object and any 4979 optional 4980 length information is passed to the region handler within the Context 4981 parameter. 4982 4983 AcpiBufferToResource: This interface converts a raw AML buffer containing 4984 a 4985 resource template or resource descriptor to the ACPI_RESOURCE internal 4986 format 4987 suitable for use by device drivers. Can be used by an operation region 4988 handler 4989 to convert the Connection() buffer object into a ACPI_RESOURCE. 4990 4991 Miscellaneous/Tools/TestSuites: 4992 ------------------------------- 4993 4994 Support for extended _HID names (Four alpha characters instead of three). 4995 Support for ACPI 5.0 features in the AcpiExec and AcpiHelp utilities. 4996 Support for ACPI 5.0 features in the ASLTS test suite. 4997 Fully updated documentation (ACPICA and iASL reference documents.) 4998 4999 ACPI Table Definition Language: 5000 ------------------------------- 5001 5002 Support for this language was implemented and released as a subsystem of 5003 the 5004 iASL compiler in 2010. (See the iASL compiler User Guide.) 5005 5006 5007 Non-ACPI 5.0 changes for this release: 5008 -------------------------------------- 5009 5010 1) ACPICA Core Subsystem: 5011 5012 Fix a problem with operation region declarations where a failure can 5013 occur 5014 if 5015 the region name and an argument that evaluates to an object (such as the 5016 region address) are in different namespace scopes. Lin Ming, ACPICA BZ 5017 937. 5018 5019 Do not abort an ACPI table load if an invalid space ID is found within. 5020 This 5021 will be caught later if the offending method is executed. ACPICA BZ 925. 5022 5023 Fixed an issue with the FFixedHW space ID where the ID was not always 5024 recognized properly (Both ACPICA and iASL). ACPICA BZ 926. 5025 5026 Fixed a problem with the 32-bit generation of the unix-specific OSL 5027 (osunixxf.c). Lin Ming, ACPICA BZ 936. 5028 5029 Several changes made to enable generation with the GCC 4.6 compiler. 5030 ACPICA BZ 5031 935. 5032 5033 New error messages: Unsupported I/O requests (not 8/16/32 bit), and 5034 Index/Bank 5035 field registers out-of-range. 5036 5037 2) iASL Compiler/Disassembler and Tools: 5038 5039 iASL: Implemented the __PATH__ operator, which returns the full pathname 5040 of 5041 the current source file. 5042 5043 AcpiHelp: Automatically display expanded keyword information for all ASL 5044 operators. 5045 5046 Debugger: Add "Template" command to disassemble/dump resource template 5047 buffers. 5048 5049 Added a new master script to generate and execute the ASLTS test suite. 5050 Automatically handles 32- and 64-bit generation. See tests/aslts.sh 5051 5052 iASL: Fix problem with listing generation during processing of the 5053 Switch() 5054 operator where AML listing was disabled until the entire Switch block was 5055 completed. 5056 5057 iASL: Improve support for semicolon statement terminators. Fix "invalid 5058 character" message for some cases when the semicolon is used. Semicolons 5059 are 5060 now allowed after every <Term> grammar element. ACPICA BZ 927. 5061 5062 iASL: Fixed some possible aliasing warnings during generation. ACPICA BZ 5063 923. 5064 5065 Disassembler: Fix problem with disassembly of the DataTableRegion 5066 operator 5067 where an inadvertent "Unhandled deferred opcode" message could be 5068 generated. 5069 5070 3) Example Code and Data Size 5071 5072 These are the sizes for the OS-independent acpica.lib produced by the 5073 Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code 5074 includes the debug output trace mechanism and has a much larger code and 5075 data 5076 size. 5077 5078 Previous Release: 5079 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 5080 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 5081 Current Release: 5082 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total 5083 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total 5084 5085 ---------------------------------------- 5086 22 September 2011. Summary of changes for version 20110922: 5087 5088 0) ACPI 5.0 News: 5089 5090 Support for ACPI 5.0 in ACPICA has been underway for several months and 5091 will 5092 be released at the same time that ACPI 5.0 is officially released. 5093 5094 The ACPI 5.0 specification is on track for release in the next few 5095 months. 5096 5097 1) ACPICA Core Subsystem: 5098 5099 Fixed a problem where the maximum sleep time for the Sleep() operator was 5100 intended to be limited to two seconds, but was inadvertently limited to 5101 20 5102 seconds instead. 5103 5104 Linux and Unix makefiles: Added header file dependencies to ensure 5105 correct 5106 generation of ACPICA core code and utilities. Also simplified the 5107 makefiles 5108 considerably through the use of the vpath variable to specify search 5109 paths. 5110 ACPICA BZ 924. 5111 5112 2) iASL Compiler/Disassembler and Tools: 5113 5114 iASL: Implemented support to check the access length for all fields 5115 created to 5116 access named Resource Descriptor fields. For example, if a resource field 5117 is 5118 defined to be two bits, a warning is issued if a CreateXxxxField() is 5119 used 5120 with an incorrect bit length. This is implemented for all current 5121 resource 5122 descriptor names. ACPICA BZ 930. 5123 5124 Disassembler: Fixed a byte ordering problem with the output of 24-bit and 5125 56- 5126 bit integers. 5127 5128 iASL: Fixed a couple of issues associated with variable-length package 5129 objects. 1) properly handle constants like One, Ones, Zero -- do not make 5130 a 5131 VAR_PACKAGE when these are used as a package length. 2) Allow the 5132 VAR_PACKAGE 5133 opcode (in addition to PACKAGE) when validating object types for 5134 predefined 5135 names. 5136 5137 iASL: Emit statistics for all output files (instead of just the ASL input 5138 and 5139 AML output). Includes listings, hex files, etc. 5140 5141 iASL: Added -G option to the table compiler to allow the compilation of 5142 custom 5143 ACPI tables. The only part of a table that is required is the standard 5144 36- 5145 byte 5146 ACPI header. 5147 5148 AcpiXtract: Ported to the standard ACPICA environment (with ACPICA 5149 headers), 5150 which also adds correct 64-bit support. Also, now all output filenames 5151 are 5152 completely lower case. 5153 5154 AcpiExec: Ignore any non-AML tables (tables other than DSDT or SSDT) when 5155 loading table files. A warning is issued for any such tables. The only 5156 exception is an FADT. This also fixes a possible fault when attempting to 5157 load 5158 non-AML tables. ACPICA BZ 932. 5159 5160 AcpiHelp: Added the AccessAs and Offset operators. Fixed a problem where 5161 a 5162 missing table terminator could cause a fault when using the -p option. 5163 5164 AcpiSrc: Fixed a possible divide-by-zero fault when generating file 5165 statistics. 5166 5167 3) Example Code and Data Size 5168 5169 These are the sizes for the OS-independent acpica.lib produced by the 5170 Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code 5171 includes the debug output trace mechanism and has a much larger code and 5172 data 5173 size. 5174 5175 Previous Release (VC 9.0): 5176 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 5177 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 5178 Current Release (VC 9.0): 5179 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 5180 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 5181 5182 5183 ---------------------------------------- 5184 23 June 2011. Summary of changes for version 20110623: 5185 5186 1) ACPI CA Core Subsystem: 5187 5188 Updated the predefined name repair mechanism to not attempt repair of a 5189 _TSS 5190 return object if a _PSS object is present. We can only sort the _TSS 5191 return 5192 package if there is no _PSS within the same scope. This is because if 5193 _PSS 5194 is 5195 present, the ACPI specification dictates that the _TSS Power Dissipation 5196 field 5197 is to be ignored, and therefore some BIOSs leave garbage values in the 5198 _TSS 5199 Power field(s). In this case, it is best to just return the _TSS package 5200 as- 5201 is. Reported by, and fixed with assistance from Fenghua Yu. 5202 5203 Added an option to globally disable the control method return value 5204 validation 5205 and repair. This runtime option can be used to disable return value 5206 repair 5207 if 5208 this is causing a problem on a particular machine. Also added an option 5209 to 5210 AcpiExec (-dr) to set this disable flag. 5211 5212 All makefiles and project files: Major changes to improve generation of 5213 ACPICA 5214 tools. ACPICA BZ 912: 5215 Reduce default optimization levels to improve compatibility 5216 For Linux, add strict-aliasing=0 for gcc 4 5217 Cleanup and simplify use of command line defines 5218 Cleanup multithread library support 5219 Improve usage messages 5220 5221 Linux-specific header: update handling of THREAD_ID and pthread. For the 5222 32- 5223 bit case, improve casting to eliminate possible warnings, especially with 5224 the 5225 acpica tools. 5226 5227 Example Code and Data Size: These are the sizes for the OS-independent 5228 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 5229 debug 5230 version of the code includes the debug output trace mechanism and has a 5231 much 5232 larger code and data size. 5233 5234 Previous Release (VC 9.0): 5235 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total 5236 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 5237 Current Release (VC 9.0): 5238 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 5239 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 5240 5241 2) iASL Compiler/Disassembler and Tools: 5242 5243 With this release, a new utility named "acpihelp" has been added to the 5244 ACPICA 5245 package. This utility summarizes the ACPI specification chapters for the 5246 ASL 5247 and AML languages. It generates under Linux/Unix as well as Windows, and 5248 provides the following functionality: 5249 Find/display ASL operator(s) -- with description and syntax. 5250 Find/display ASL keyword(s) -- with exact spelling and descriptions. 5251 Find/display ACPI predefined name(s) -- with description, number 5252 of arguments, and the return value data type. 5253 Find/display AML opcode name(s) -- with opcode, arguments, and 5254 grammar. 5255 Decode/display AML opcode -- with opcode name, arguments, and 5256 grammar. 5257 5258 Service Layers: Make multi-thread support configurable. Conditionally 5259 compile 5260 the multi-thread support so that threading libraries will not be linked 5261 if 5262 not 5263 necessary. The only tool that requires multi-thread support is AcpiExec. 5264 5265 iASL: Update yyerrror/AslCompilerError for "const" errors. Newer versions 5266 of 5267 Bison appear to want the interface to yyerror to be a const char * (or at 5268 least this is a problem when generating iASL on some systems.) ACPICA BZ 5269 923 5270 Pierre Lejeune. 5271 5272 Tools: Fix for systems where O_BINARY is not defined. Only used for 5273 Windows 5274 versions of the tools. 5275 5276 ---------------------------------------- 5277 27 May 2011. Summary of changes for version 20110527: 5278 5279 1) ACPI CA Core Subsystem: 5280 5281 ASL Load() operator: Reinstate most restrictions on the incoming ACPI 5282 table 5283 signature. Now, only allow SSDT, OEMx, and a null signature. History: 5284 1) Originally, we checked the table signature for "SSDT" or "PSDT". 5285 (PSDT is now obsolete.) 5286 2) We added support for OEMx tables, signature "OEM" plus a fourth 5287 "don't care" character. 5288 3) Valid tables were encountered with a null signature, so we just 5289 gave up on validating the signature, (05/2008). 5290 4) We encountered non-AML tables such as the MADT, which caused 5291 interpreter errors and kernel faults. So now, we once again allow 5292 only SSDT, OEMx, and now, also a null signature. (05/2011). 5293 5294 Added the missing _TDL predefined name to the global name list in order 5295 to 5296 enable validation. Affects both the core ACPICA code and the iASL 5297 compiler. 5298 5299 Example Code and Data Size: These are the sizes for the OS-independent 5300 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 5301 debug 5302 version of the code includes the debug output trace mechanism and has a 5303 much 5304 larger code and data size. 5305 5306 Previous Release (VC 9.0): 5307 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total 5308 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total 5309 Current Release (VC 9.0): 5310 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total 5311 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 5312 5313 2) iASL Compiler/Disassembler and Tools: 5314 5315 Debugger/AcpiExec: Implemented support for "complex" method arguments on 5316 the 5317 debugger command line. This adds support beyond simple integers -- 5318 including 5319 Strings, Buffers, and Packages. Includes support for nested packages. 5320 Increased the default command line buffer size to accommodate these 5321 arguments. 5322 See the ACPICA reference for details and syntax. ACPICA BZ 917. 5323 5324 Debugger/AcpiExec: Implemented support for "default" method arguments for 5325 the 5326 Execute/Debug command. Now, the debugger will always invoke a control 5327 method 5328 with the required number of arguments -- even if the command line 5329 specifies 5330 none or insufficient arguments. It uses default integer values for any 5331 missing 5332 arguments. Also fixes a bug where only six method arguments maximum were 5333 supported instead of the required seven. 5334 5335 Debugger/AcpiExec: Add a maximum buffer length parameter to AcpiOsGetLine 5336 and 5337 also return status in order to prevent buffer overruns. See the ACPICA 5338 reference for details and syntax. ACPICA BZ 921 5339 5340 iASL: Cleaned up support for Berkeley yacc. A general cleanup of code and 5341 makefiles to simplify support for the two different but similar parser 5342 generators, bison and yacc. 5343 5344 Updated the generic unix makefile for gcc 4. The default gcc version is 5345 now 5346 expected to be 4 or greater, since options specific to gcc 4 are used. 5347 5348 ---------------------------------------- 5349 13 April 2011. Summary of changes for version 20110413: 5350 5351 1) ACPI CA Core Subsystem: 5352 5353 Implemented support to execute a so-called "orphan" _REG method under the 5354 EC 5355 device. This change will force the execution of a _REG method underneath 5356 the 5357 EC 5358 device even if there is no corresponding operation region of type 5359 EmbeddedControl. Fixes a problem seen on some machines and apparently is 5360 compatible with Windows behavior. ACPICA BZ 875. 5361 5362 Added more predefined methods that are eligible for automatic NULL 5363 package 5364 element removal. This change adds another group of predefined names to 5365 the 5366 list 5367 of names that can be repaired by having NULL package elements dynamically 5368 removed. This group are those methods that return a single variable- 5369 length 5370 package containing simple data types such as integers, buffers, strings. 5371 This 5372 includes: _ALx, _BCL, _CID,_ DOD, _EDL, _FIX, _PCL, _PLD, _PMD, _PRx, 5373 _PSL, 5374 _Sx, 5375 and _TZD. ACPICA BZ 914. 5376 5377 Split and segregated all internal global lock functions to a new file, 5378 evglock.c. 5379 5380 Updated internal address SpaceID for DataTable regions. Moved this 5381 internal 5382 space 5383 id in preparation for ACPI 5.0 changes that will include some new space 5384 IDs. 5385 This 5386 change should not affect user/host code. 5387 5388 Example Code and Data Size: These are the sizes for the OS-independent 5389 acpica.lib 5390 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug 5391 version of 5392 the code includes the debug output trace mechanism and has a much larger 5393 code 5394 and 5395 data size. 5396 5397 Previous Release (VC 9.0): 5398 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total 5399 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total 5400 Current Release (VC 9.0): 5401 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total 5402 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total 5403 5404 2) iASL Compiler/Disassembler and Tools: 5405 5406 iASL/DTC: Major update for new grammar features. Allow generic data types 5407 in 5408 custom ACPI tables. Field names are now optional. Any line can be split 5409 to 5410 multiple lines using the continuation char (\). Large buffers now use 5411 line- 5412 continuation character(s) and no colon on the continuation lines. See the 5413 grammar 5414 update in the iASL compiler reference. ACPI BZ 910,911. Lin Ming, Bob 5415 Moore. 5416 5417 iASL: Mark ASL "Return()" and the simple "Return" as "Null" return 5418 statements. 5419 Since the parser stuffs a "zero" as the return value for these statements 5420 (due 5421 to 5422 the underlying AML grammar), they were seen as "return with value" by the 5423 iASL 5424 semantic checking. They are now seen correctly as "null" return 5425 statements. 5426 5427 iASL: Check if a_REG declaration has a corresponding Operation Region. 5428 Adds a 5429 check for each _REG to ensure that there is in fact a corresponding 5430 operation 5431 region declaration in the same scope. If not, the _REG method is not very 5432 useful 5433 since it probably won't be executed. ACPICA BZ 915. 5434 5435 iASL/DTC: Finish support for expression evaluation. Added a new 5436 expression 5437 parser 5438 that implements c-style operator precedence and parenthesization. ACPICA 5439 bugzilla 5440 908. 5441 5442 Disassembler/DTC: Remove support for () and <> style comments in data 5443 tables. 5444 Now 5445 that DTC has full expression support, we don't want to have comment 5446 strings 5447 that 5448 start with a parentheses or a less-than symbol. Now, only the standard /* 5449 and 5450 // 5451 comments are supported, as well as the bracket [] comments. 5452 5453 AcpiXtract: Fix for RSDP and dynamic SSDT extraction. These tables have 5454 "unusual" 5455 headers in the acpidump file. Update the header validation to support 5456 these 5457 tables. Problem introduced in previous AcpiXtract version in the change 5458 to 5459 support "wrong checksum" error messages emitted by acpidump utility. 5460 5461 iASL: Add a * option to generate all template files (as a synonym for 5462 ALL) 5463 as 5464 in 5465 "iasl -T *" or "iasl -T ALL". 5466 5467 iASL/DTC: Do not abort compiler on fatal errors. We do not want to 5468 completely 5469 abort the compiler on "fatal" errors, simply should abort the current 5470 compile. 5471 This allows multiple compiles with a single (possibly wildcard) compiler 5472 invocation. 5473 5474 ---------------------------------------- 5475 16 March 2011. Summary of changes for version 20110316: 5476 5477 1) ACPI CA Core Subsystem: 5478 5479 Fixed a problem caused by a _PRW method appearing at the namespace root 5480 scope 5481 during the setup of wake GPEs. A fault could occur if a _PRW directly 5482 under 5483 the 5484 root object was passed to the AcpiSetupGpeForWake interface. Lin Ming. 5485 5486 Implemented support for "spurious" Global Lock interrupts. On some 5487 systems, a 5488 global lock interrupt can occur without the pending flag being set. Upon 5489 a 5490 GL 5491 interrupt, we now ensure that a thread is actually waiting for the lock 5492 before 5493 signaling GL availability. Rafael Wysocki, Bob Moore. 5494 5495 Example Code and Data Size: These are the sizes for the OS-independent 5496 acpica.lib 5497 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug 5498 version of 5499 the code includes the debug output trace mechanism and has a much larger 5500 code 5501 and 5502 data size. 5503 5504 Previous Release (VC 9.0): 5505 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 5506 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 5507 Current Release (VC 9.0): 5508 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total 5509 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total 5510 5511 2) iASL Compiler/Disassembler and Tools: 5512 5513 Implemented full support for the "SLIC" ACPI table. Includes support in 5514 the 5515 header files, disassembler, table compiler, and template generator. Bob 5516 Moore, 5517 Lin Ming. 5518 5519 AcpiXtract: Correctly handle embedded comments and messages from 5520 AcpiDump. 5521 Apparently some or all versions of acpidump will occasionally emit a 5522 comment 5523 like 5524 "Wrong checksum", etc., into the dump file. This was causing problems for 5525 AcpiXtract. ACPICA BZ 905. 5526 5527 iASL: Fix the Linux makefile by removing an inadvertent double file 5528 inclusion. 5529 ACPICA BZ 913. 5530 5531 AcpiExec: Update installation of operation region handlers. Install one 5532 handler 5533 for a user-defined address space. This is used by the ASL test suite 5534 (ASLTS). 5535 5536 ---------------------------------------- 5537 11 February 2011. Summary of changes for version 20110211: 5538 5539 1) ACPI CA Core Subsystem: 5540 5541 Added a mechanism to defer _REG methods for some early-installed 5542 handlers. 5543 Most user handlers should be installed before call to 5544 AcpiEnableSubsystem. 5545 However, Event handlers and region handlers should be installed after 5546 AcpiInitializeObjects. Override handlers for the "default" regions should 5547 be 5548 installed early, however. This change executes all _REG methods for the 5549 default regions (Memory/IO/PCI/DataTable) simultaneously to prevent any 5550 chicken/egg issues between them. ACPICA BZ 848. 5551 5552 Implemented an optimization for GPE detection. This optimization will 5553 simply 5554 ignore GPE registers that contain no enabled GPEs -- there is no need to 5555 read the register since this information is available internally. This 5556 becomes more important on machines with a large GPE space. ACPICA 5557 bugzilla 5558 884. Lin Ming. Suggestion from Joe Liu. 5559 5560 Removed all use of the highly unreliable FADT revision field. The 5561 revision 5562 number in the FADT has been found to be completely unreliable and cannot 5563 be 5564 trusted. Only the actual table length can be used to infer the version. 5565 This 5566 change updates the ACPICA core and the disassembler so that both no 5567 longer 5568 even look at the FADT version and instead depend solely upon the FADT 5569 length. 5570 5571 Fix an unresolved name issue for the no-debug and no-error-message source 5572 generation cases. The _AcpiModuleName was left undefined in these cases, 5573 but 5574 it is actually needed as a parameter to some interfaces. Define 5575 _AcpiModuleName as a null string in these cases. ACPICA Bugzilla 888. 5576 5577 Split several large files (makefiles and project files updated) 5578 utglobal.c -> utdecode.c 5579 dbcomds.c -> dbmethod.c dbnames.c 5580 dsopcode.c -> dsargs.c dscontrol.c 5581 dsload.c -> dsload2.c 5582 aslanalyze.c -> aslbtypes.c aslwalks.c 5583 5584 Example Code and Data Size: These are the sizes for the OS-independent 5585 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 5586 debug version of the code includes the debug output trace mechanism and 5587 has 5588 a much larger code and data size. 5589 5590 Previous Release (VC 9.0): 5591 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 5592 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 5593 Current Release (VC 9.0): 5594 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 5595 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 5596 5597 2) iASL Compiler/Disassembler and Tools: 5598 5599 iASL: Implemented the predefined macros __LINE__, __FILE__, and __DATE__. 5600 These are useful C-style macros with the standard definitions. ACPICA 5601 bugzilla 898. 5602 5603 iASL/DTC: Added support for integer expressions and labels. Support for 5604 full 5605 expressions for all integer fields in all ACPI tables. Support for labels 5606 in 5607 "generic" portions of tables such as UEFI. See the iASL reference manual. 5608 5609 Debugger: Added a command to display the status of global handlers. The 5610 "handlers" command will display op region, fixed event, and miscellaneous 5611 global handlers. installation status -- and for op regions, whether 5612 default 5613 or user-installed handler will be used. 5614 5615 iASL: Warn if reserved method incorrectly returns a value. Many 5616 predefined 5617 names are defined such that they do not return a value. If implemented as 5618 a 5619 method, issue a warning if such a name explicitly returns a value. ACPICA 5620 Bugzilla 855. 5621 5622 iASL: Added detection of GPE method name conflicts. Detects a conflict 5623 where 5624 there are two GPE methods of the form _Lxy and _Exy in the same scope. 5625 (For 5626 example, _L1D and _E1D in the same scope.) ACPICA bugzilla 848. 5627 5628 iASL/DTC: Fixed a couple input scanner issues with comments and line 5629 numbers. Comment remover could get confused and miss a comment ending. 5630 Fixed 5631 a problem with line counter maintenance. 5632 5633 iASL/DTC: Reduced the severity of some errors from fatal to error. There 5634 is 5635 no need to abort on simple errors within a field definition. 5636 5637 Debugger: Simplified the output of the help command. All help output now 5638 in 5639 a single screen, instead of help subcommands. ACPICA Bugzilla 897. 5640 5641 ---------------------------------------- 5642 12 January 2011. Summary of changes for version 20110112: 5643 5644 1) ACPI CA Core Subsystem: 5645 5646 Fixed a race condition between method execution and namespace walks that 5647 can 5648 possibly cause a fault. The problem was apparently introduced in version 5649 20100528 as a result of a performance optimization that reduces the 5650 number 5651 of 5652 namespace walks upon method exit by using the delete_namespace_subtree 5653 function instead of the delete_namespace_by_owner function used 5654 previously. 5655 Bug is a missing namespace lock in the delete_namespace_subtree function. 5656 dana.myers (a] oracle.com 5657 5658 Fixed several issues and a possible fault with the automatic "serialized" 5659 method support. History: This support changes a method to "serialized" on 5660 the 5661 fly if the method generates an AE_ALREADY_EXISTS error, indicating the 5662 possibility that it cannot handle reentrancy. This fix repairs a couple 5663 of 5664 issues seen in the field, especially on machines with many cores: 5665 5666 1) Delete method children only upon the exit of the last thread, 5667 so as to not delete objects out from under other running threads 5668 (and possibly causing a fault.) 5669 2) Set the "serialized" bit for the method only upon the exit of the 5670 Last thread, so as to not cause deadlock when running threads 5671 attempt to exit. 5672 3) Cleanup the use of the AML "MethodFlags" and internal method flags 5673 so that there is no longer any confusion between the two. 5674 5675 Lin Ming, Bob Moore. Reported by dana.myers (a] oracle.com. 5676 5677 Debugger: Now lock the namespace for duration of a namespace dump. 5678 Prevents 5679 issues if the namespace is changing dynamically underneath the debugger. 5680 Especially affects temporary namespace nodes, since the debugger displays 5681 these also. 5682 5683 Updated the ordering of include files. The ACPICA headers should appear 5684 before any compiler-specific headers (stdio.h, etc.) so that acenv.h can 5685 set 5686 any necessary compiler-specific defines, etc. Affects the ACPI-related 5687 tools 5688 and utilities. 5689 5690 Updated all ACPICA copyrights and signons to 2011. Added the 2011 5691 copyright 5692 to all module headers and signons, including the Linux header. This 5693 affects 5694 virtually every file in the ACPICA core subsystem, iASL compiler, and all 5695 utilities. 5696 5697 Added project files for MS Visual Studio 2008 (VC++ 9.0). The original 5698 project files for VC++ 6.0 are now obsolete. New project files can be 5699 found 5700 under acpica/generate/msvc9. See acpica/generate/msvc9/readme.txt for 5701 details. 5702 5703 Example Code and Data Size: These are the sizes for the OS-independent 5704 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 5705 debug version of the code includes the debug output trace mechanism and 5706 has a 5707 much larger code and data size. 5708 5709 Previous Release (VC 6.0): 5710 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total 5711 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total 5712 Current Release (VC 9.0): 5713 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 5714 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 5715 5716 2) iASL Compiler/Disassembler and Tools: 5717 5718 iASL: Added generic data types to the Data Table compiler. Add "generic" 5719 data 5720 types such as UINT32, String, Unicode, etc., to simplify the generation 5721 of 5722 platform-defined tables such as UEFI. Lin Ming. 5723 5724 iASL: Added listing support for the Data Table Compiler. Adds listing 5725 support 5726 (-l) to display actual binary output for each line of input code. 5727 5728 ---------------------------------------- 5729 09 December 2010. Summary of changes for version 20101209: 5730 5731 1) ACPI CA Core Subsystem: 5732 5733 Completed the major overhaul of the GPE support code that was begun in 5734 July 5735 2010. Major features include: removal of _PRW execution in ACPICA (host 5736 executes _PRWs anyway), cleanup of "wake" GPE interfaces and processing, 5737 changes to existing interfaces, simplification of GPE handler operation, 5738 and 5739 a handful of new interfaces: 5740 5741 AcpiUpdateAllGpes 5742 AcpiFinishGpe 5743 AcpiSetupGpeForWake 5744 AcpiSetGpeWakeMask 5745 One new file, evxfgpe.c to consolidate all external GPE interfaces. 5746 5747 See the ACPICA Programmer Reference for full details and programming 5748 information. See the new section 4.4 "General Purpose Event (GPE) 5749 Support" 5750 for a full overview, and section 8.7 "ACPI General Purpose Event 5751 Management" 5752 for programming details. ACPICA BZ 858,870,877. Matthew Garrett, Lin 5753 Ming, 5754 Bob Moore, Rafael Wysocki. 5755 5756 Implemented a new GPE feature for Windows compatibility, the "Implicit 5757 Wake 5758 GPE Notify". This feature will automatically issue a Notify(2) on a 5759 device 5760 when a Wake GPE is received if there is no corresponding GPE method or 5761 handler. ACPICA BZ 870. 5762 5763 Fixed a problem with the Scope() operator during table parse and load 5764 phase. 5765 During load phase (table load or method execution), the scope operator 5766 should 5767 not enter the target into the namespace. Instead, it should open a new 5768 scope 5769 at the target location. Linux BZ 19462, ACPICA BZ 882. 5770 5771 Example Code and Data Size: These are the sizes for the OS-independent 5772 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5773 debug version of the code includes the debug output trace mechanism and 5774 has a 5775 much larger code and data size. 5776 5777 Previous Release: 5778 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total 5779 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total 5780 Current Release: 5781 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 5782 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 5783 5784 2) iASL Compiler/Disassembler and Tools: 5785 5786 iASL: Relax the alphanumeric restriction on _CID strings. These strings 5787 are 5788 "bus-specific" per the ACPI specification, and therefore any characters 5789 are 5790 acceptable. The only checks that can be performed are for a null string 5791 and 5792 perhaps for a leading asterisk. ACPICA BZ 886. 5793 5794 iASL: Fixed a problem where a syntax error that caused a premature EOF 5795 condition on the source file emitted a very confusing error message. The 5796 premature EOF is now detected correctly. ACPICA BZ 891. 5797 5798 Disassembler: Decode the AccessSize within a Generic Address Structure 5799 (byte 5800 access, word access, etc.) Note, this field does not allow arbitrary bit 5801 access, the size is encoded as 1=byte, 2=word, 3=dword, and 4=qword. 5802 5803 New: AcpiNames utility - Example namespace dump utility. Shows an example 5804 of 5805 ACPICA configuration for a minimal namespace dump utility. Uses table and 5806 namespace managers, but no AML interpreter. Does not add any 5807 functionality 5808 over AcpiExec, it is a subset of AcpiExec. The purpose is to show how to 5809 partition and configure ACPICA. ACPICA BZ 883. 5810 5811 AML Debugger: Increased the debugger buffer size for method return 5812 objects. 5813 Was 4K, increased to 16K. Also enhanced error messages for debugger 5814 method 5815 execution, including the buffer overflow case. 5816 5817 ---------------------------------------- 5818 13 October 2010. Summary of changes for version 20101013: 5819 5820 1) ACPI CA Core Subsystem: 5821 5822 Added support to clear the PCIEXP_WAKE event. When clearing ACPI events, 5823 now 5824 clear the PCIEXP_WAKE_STS bit in the ACPI PM1 Status Register, via 5825 HwClearAcpiStatus. Original change from Colin King. ACPICA BZ 880. 5826 5827 Changed the type of the predefined namespace object _TZ from ThermalZone 5828 to 5829 Device. This was found to be confusing to the host software that 5830 processes 5831 the various thermal zones, since _TZ is not really a ThermalZone. 5832 However, 5833 a 5834 Notify() can still be performed on it. ACPICA BZ 876. Suggestion from Rui 5835 Zhang. 5836 5837 Added Windows Vista SP2 to the list of supported _OSI strings. The actual 5838 string is "Windows 2006 SP2". 5839 5840 Eliminated duplicate code in AcpiUtExecute* functions. Now that the 5841 nsrepair 5842 code automatically repairs _HID-related strings, this type of code is no 5843 longer needed in Execute_HID, Execute_CID, and Execute_UID. ACPICA BZ 5844 878. 5845 5846 Example Code and Data Size: These are the sizes for the OS-independent 5847 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5848 debug version of the code includes the debug output trace mechanism and 5849 has a 5850 much larger code and data size. 5851 5852 Previous Release: 5853 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 5854 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 5855 Current Release: 5856 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 5857 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 5858 5859 2) iASL Compiler/Disassembler and Tools: 5860 5861 iASL: Implemented additional compile-time validation for _HID strings. 5862 The 5863 non-hex prefix (such as "PNP" or "ACPI") must be uppercase, and the 5864 length 5865 of 5866 the string must be exactly seven or eight characters. For both _HID and 5867 _CID 5868 strings, all characters must be alphanumeric. ACPICA BZ 874. 5869 5870 iASL: Allow certain "null" resource descriptors. Some BIOS code creates 5871 descriptors that are mostly or all zeros, with the expectation that they 5872 will 5873 be filled in at runtime. iASL now allows this as long as there is a 5874 "resource 5875 tag" (name) associated with the descriptor, which gives the ASL a handle 5876 needed to modify the descriptor. ACPICA BZ 873. 5877 5878 Added single-thread support to the generic Unix application OSL. 5879 Primarily 5880 for iASL support, this change removes the use of semaphores in the 5881 single- 5882 threaded ACPICA tools/applications - increasing performance. The 5883 _MULTI_THREADED option was replaced by the (reverse) ACPI_SINGLE_THREADED 5884 option. ACPICA BZ 879. 5885 5886 AcpiExec: several fixes for the 64-bit version. Adds XSDT support and 5887 support 5888 for 64-bit DSDT/FACS addresses in the FADT. Lin Ming. 5889 5890 iASL: Moved all compiler messages to a new file, aslmessages.h. 5891 5892 ---------------------------------------- 5893 15 September 2010. Summary of changes for version 20100915: 5894 5895 1) ACPI CA Core Subsystem: 5896 5897 Removed the AcpiOsDerivePciId OSL interface. The various host 5898 implementations 5899 of this function were not OS-dependent and are now obsolete and can be 5900 removed from all host OSLs. This function has been replaced by 5901 AcpiHwDerivePciId, which is now part of the ACPICA core code. 5902 AcpiHwDerivePciId has been implemented without recursion. Adds one new 5903 module, hwpci.c. ACPICA BZ 857. 5904 5905 Implemented a dynamic repair for _HID and _CID strings. The following 5906 problems are now repaired at runtime: 1) Remove a leading asterisk in the 5907 string, and 2) the entire string is uppercased. Both repairs are in 5908 accordance with the ACPI specification and will simplify host driver 5909 code. 5910 ACPICA BZ 871. 5911 5912 The ACPI_THREAD_ID type is no longer configurable, internally it is now 5913 always UINT64. This simplifies the ACPICA code, especially any printf 5914 output. 5915 UINT64 is the only common data type for all thread_id types across all 5916 operating systems. It is now up to the host OSL to cast the native 5917 thread_id 5918 type to UINT64 before returning the value to ACPICA (via 5919 AcpiOsGetThreadId). 5920 Lin Ming, Bob Moore. 5921 5922 Added the ACPI_INLINE type to enhance the ACPICA configuration. The 5923 "inline" 5924 keyword is not standard across compilers, and this type allows inline to 5925 be 5926 configured on a per-compiler basis. Lin Ming. 5927 5928 Made the system global AcpiGbl_SystemAwakeAndRunning publically 5929 available. 5930 Added an extern for this boolean in acpixf.h. Some hosts utilize this 5931 value 5932 during suspend/restore operations. ACPICA BZ 869. 5933 5934 All code that implements error/warning messages with the "ACPI:" prefix 5935 has 5936 been moved to a new module, utxferror.c. 5937 5938 The UINT64_OVERLAY was moved to utmath.c, which is the only module where 5939 it 5940 is used. ACPICA BZ 829. Lin Ming, Bob Moore. 5941 5942 Example Code and Data Size: These are the sizes for the OS-independent 5943 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5944 debug version of the code includes the debug output trace mechanism and 5945 has a 5946 much larger code and data size. 5947 5948 Previous Release: 5949 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total 5950 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total 5951 Current Release: 5952 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 5953 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 5954 5955 2) iASL Compiler/Disassembler and Tools: 5956 5957 iASL/Disassembler: Write ACPI errors to stderr instead of the output 5958 file. 5959 This keeps the output files free of random error messages that may 5960 originate 5961 from within the namespace/interpreter code. Used this opportunity to 5962 merge 5963 all ACPI:-style messages into a single new module, utxferror.c. ACPICA BZ 5964 866. Lin Ming, Bob Moore. 5965 5966 Tools: update some printfs for ansi warnings on size_t. Handle width 5967 change 5968 of size_t on 32-bit versus 64-bit generations. Lin Ming. 5969 5970 ---------------------------------------- 5971 06 August 2010. Summary of changes for version 20100806: 5972 5973 1) ACPI CA Core Subsystem: 5974 5975 Designed and implemented a new host interface to the _OSI support code. 5976 This 5977 will allow the host to dynamically add or remove multiple _OSI strings, 5978 as 5979 well as install an optional handler that is called for each _OSI 5980 invocation. 5981 Also added a new AML debugger command, 'osi' to display and modify the 5982 global 5983 _OSI string table, and test support in the AcpiExec utility. See the 5984 ACPICA 5985 reference manual for full details. Lin Ming, Bob Moore. ACPICA BZ 836. 5986 New Functions: 5987 AcpiInstallInterface - Add an _OSI string. 5988 AcpiRemoveInterface - Delete an _OSI string. 5989 AcpiInstallInterfaceHandler - Install optional _OSI handler. 5990 Obsolete Functions: 5991 AcpiOsValidateInterface - no longer used. 5992 New Files: 5993 source/components/utilities/utosi.c 5994 5995 Re-introduced the support to enable multi-byte transfers for Embedded 5996 Controller (EC) operation regions. A reported problem was found to be a 5997 bug 5998 in the host OS, not in the multi-byte support. Previously, the maximum 5999 data 6000 size passed to the EC operation region handler was a single byte. There 6001 are 6002 often EC Fields larger than one byte that need to be transferred, and it 6003 is 6004 useful for the EC driver to lock these as a single transaction. This 6005 change 6006 enables single transfers larger than 8 bits. This effectively changes the 6007 access to the EC space from ByteAcc to AnyAcc, and will probably require 6008 changes to the host OS Embedded Controller driver to enable 16/32/64/256- 6009 bit 6010 transfers in addition to 8-bit transfers. Alexey Starikovskiy, Lin Ming. 6011 6012 Fixed a problem with the prototype for AcpiOsReadPciConfiguration. The 6013 prototype in acpiosxf.h had the output value pointer as a (void *). 6014 It should be a (UINT64 *). This may affect some host OSL code. 6015 6016 Fixed a couple problems with the recently modified Linux makefiles for 6017 iASL 6018 and AcpiExec. These new makefiles place the generated object files in the 6019 local directory so that there can be no collisions between the files that 6020 are 6021 shared between them that are compiled with different options. 6022 6023 Example Code and Data Size: These are the sizes for the OS-independent 6024 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6025 debug version of the code includes the debug output trace mechanism and 6026 has a 6027 much larger code and data size. 6028 6029 Previous Release: 6030 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 6031 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total 6032 Current Release: 6033 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total 6034 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total 6035 6036 2) iASL Compiler/Disassembler and Tools: 6037 6038 iASL/Disassembler: Added a new option (-da, "disassemble all") to load 6039 the 6040 namespace from and disassemble an entire group of AML files. Useful for 6041 loading all of the AML tables for a given machine (DSDT, SSDT1...SSDTn) 6042 and 6043 disassembling with one simple command. ACPICA BZ 865. Lin Ming. 6044 6045 iASL: Allow multiple invocations of -e option. This change allows 6046 multiple 6047 uses of -e on the command line: "-e ssdt1.dat -e ssdt2.dat". ACPICA BZ 6048 834. 6049 Lin Ming. 6050 6051 ---------------------------------------- 6052 02 July 2010. Summary of changes for version 20100702: 6053 6054 1) ACPI CA Core Subsystem: 6055 6056 Implemented several updates to the recently added GPE reference count 6057 support. The model for "wake" GPEs is changing to give the host OS 6058 complete 6059 control of these GPEs. Eventually, the ACPICA core will not execute any 6060 _PRW 6061 methods, since the host already must execute them. Also, additional 6062 changes 6063 were made to help ensure that the reference counts are kept in proper 6064 synchronization with reality. Rafael J. Wysocki. 6065 6066 1) Ensure that GPEs are not enabled twice during initialization. 6067 2) Ensure that GPE enable masks stay in sync with the reference count. 6068 3) Do not inadvertently enable GPEs when writing GPE registers. 6069 4) Remove the internal wake reference counter and add new AcpiGpeWakeup 6070 interface. This interface will set or clear individual GPEs for wakeup. 6071 5) Remove GpeType argument from AcpiEnable and AcpiDisable. These 6072 interfaces 6073 are now used for "runtime" GPEs only. 6074 6075 Changed the behavior of the GPE install/remove handler interfaces. The 6076 GPE 6077 is 6078 no longer disabled during this process, as it was found to cause problems 6079 on 6080 some machines. Rafael J. Wysocki. 6081 6082 Reverted a change introduced in version 20100528 to enable Embedded 6083 Controller multi-byte transfers. This change was found to cause problems 6084 with 6085 Index Fields and possibly Bank Fields. It will be reintroduced when these 6086 problems have been resolved. 6087 6088 Fixed a problem with references to Alias objects within Package Objects. 6089 A 6090 reference to an Alias within the definition of a Package was not always 6091 resolved properly. Aliases to objects like Processors, Thermal zones, 6092 etc. 6093 were resolved to the actual object instead of a reference to the object 6094 as 6095 it 6096 should be. Package objects are only allowed to contain integer, string, 6097 buffer, package, and reference objects. Redhat bugzilla 608648. 6098 6099 Example Code and Data Size: These are the sizes for the OS-independent 6100 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6101 debug version of the code includes the debug output trace mechanism and 6102 has a 6103 much larger code and data size. 6104 6105 Previous Release: 6106 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 6107 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total 6108 Current Release: 6109 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 6110 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total 6111 6112 2) iASL Compiler/Disassembler and Tools: 6113 6114 iASL: Implemented a new compiler subsystem to allow definition and 6115 compilation of the non-AML ACPI tables such as FADT, MADT, SRAT, etc. 6116 These 6117 are called "ACPI Data Tables", and the new compiler is the "Data Table 6118 Compiler". This compiler is intended to simplify the existing error-prone 6119 process of creating these tables for the BIOS, as well as allowing the 6120 disassembly, modification, recompilation, and override of existing ACPI 6121 data 6122 tables. See the iASL User Guide for detailed information. 6123 6124 iASL: Implemented a new Template Generator option in support of the new 6125 Data 6126 Table Compiler. This option will create examples of all known ACPI tables 6127 that can be used as the basis for table development. See the iASL 6128 documentation and the -T option. 6129 6130 Disassembler and headers: Added support for the WDDT ACPI table (Watchdog 6131 Descriptor Table). 6132 6133 Updated the Linux makefiles for iASL and AcpiExec to place the generated 6134 object files in the local directory so that there can be no collisions 6135 between the shared files between them that are generated with different 6136 options. 6137 6138 Added support for Mac OS X in the Unix OSL used for iASL and AcpiExec. 6139 Use 6140 the #define __APPLE__ to enable this support. 6141 6142 ---------------------------------------- 6143 28 May 2010. Summary of changes for version 20100528: 6144 6145 Note: The ACPI 4.0a specification was released on April 5, 2010 and is 6146 available at www.acpi.info. This is primarily an errata release. 6147 6148 1) ACPI CA Core Subsystem: 6149 6150 Undefined ACPI tables: We are looking for the definitions for the 6151 following 6152 ACPI tables that have been seen in the field: ATKG, IEIT, GSCI. 6153 6154 Implemented support to enable multi-byte transfers for Embedded 6155 Controller 6156 (EC) operation regions. Previously, the maximum data size passed to the 6157 EC 6158 operation region handler was a single byte. There are often EC Fields 6159 larger 6160 than one byte that need to be transferred, and it is useful for the EC 6161 driver 6162 to lock these as a single transaction. This change enables single 6163 transfers 6164 larger than 8 bits. This effectively changes the access to the EC space 6165 from 6166 ByteAcc to AnyAcc, and will probably require changes to the host OS 6167 Embedded 6168 Controller driver to enable 16/32/64/256-bit transfers in addition to 8- 6169 bit 6170 transfers. Alexey Starikovskiy, Lin Ming 6171 6172 Implemented a performance enhancement for namespace search and access. 6173 This 6174 change enhances the performance of namespace searches and walks by adding 6175 a 6176 backpointer to the parent in each namespace node. On large namespaces, 6177 this 6178 change can improve overall ACPI performance by up to 9X. Adding a pointer 6179 to 6180 each namespace node increases the overall size of the internal namespace 6181 by 6182 about 5%, since each namespace entry usually consists of both a namespace 6183 node and an ACPI operand object. However, this is the first growth of the 6184 namespace in ten years. ACPICA bugzilla 817. Alexey Starikovskiy. 6185 6186 Implemented a performance optimization that reduces the number of 6187 namespace 6188 walks. On control method exit, only walk the namespace if the method is 6189 known 6190 to have created namespace objects outside of its local scope. Previously, 6191 the 6192 entire namespace was traversed on each control method exit. This change 6193 can 6194 improve overall ACPI performance by up to 3X. Alexey Starikovskiy, Bob 6195 Moore. 6196 6197 Added support to truncate I/O addresses to 16 bits for Windows 6198 compatibility. 6199 Some ASL code has been seen in the field that inadvertently has bits set 6200 above bit 15. This feature is optional and is enabled if the BIOS 6201 requests 6202 any Windows OSI strings. It can also be enabled by the host OS. Matthew 6203 Garrett, Bob Moore. 6204 6205 Added support to limit the maximum time for the ASL Sleep() operator. To 6206 prevent accidental deep sleeps, limit the maximum time that Sleep() will 6207 actually sleep. Configurable, the default maximum is two seconds. ACPICA 6208 bugzilla 854. 6209 6210 Added run-time validation support for the _WDG and_WED Microsoft 6211 predefined 6212 methods. These objects are defined by "Windows Instrumentation", and are 6213 not 6214 part of the ACPI spec. ACPICA BZ 860. 6215 6216 Expanded all statistic counters used during namespace and device 6217 initialization from 16 to 32 bits in order to support very large 6218 namespaces. 6219 6220 Replaced all instances of %d in printf format specifiers with %u since 6221 nearly 6222 all integers in ACPICA are unsigned. 6223 6224 Fixed the exception namestring for AE_WAKE_ONLY_GPE. Was incorrectly 6225 returned 6226 as AE_NO_HANDLER. 6227 6228 Example Code and Data Size: These are the sizes for the OS-independent 6229 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6230 debug version of the code includes the debug output trace mechanism and 6231 has a 6232 much larger code and data size. 6233 6234 Previous Release: 6235 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total 6236 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total 6237 Current Release: 6238 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 6239 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total 6240 6241 2) iASL Compiler/Disassembler and Tools: 6242 6243 iASL: Added compiler support for the _WDG and_WED Microsoft predefined 6244 methods. These objects are defined by "Windows Instrumentation", and are 6245 not 6246 part of the ACPI spec. ACPICA BZ 860. 6247 6248 AcpiExec: added option to disable the memory tracking mechanism. The -dt 6249 option will disable the tracking mechanism, which improves performance 6250 considerably. 6251 6252 AcpiExec: Restructured the command line options into -d (disable) and -e 6253 (enable) options. 6254 6255 ---------------------------------------- 6256 28 April 2010. Summary of changes for version 20100428: 6257 6258 1) ACPI CA Core Subsystem: 6259 6260 Implemented GPE support for dynamically loaded ACPI tables. For all GPEs, 6261 including FADT-based and GPE Block Devices, execute any _PRW methods in 6262 the 6263 new table, and process any _Lxx/_Exx GPE methods in the new table. Any 6264 runtime GPE that is referenced by an _Lxx/_Exx method in the new table is 6265 immediately enabled. Handles the FADT-defined GPEs as well as GPE Block 6266 Devices. Provides compatibility with other ACPI implementations. Two new 6267 files added, evgpeinit.c and evgpeutil.c. ACPICA BZ 833. Lin Ming, Bob 6268 Moore. 6269 6270 Fixed a regression introduced in version 20100331 within the table 6271 manager 6272 where initial table loading could fail. This was introduced in the fix 6273 for 6274 AcpiReallocateRootTable. Also, renamed some of fields in the table 6275 manager 6276 data structures to clarify their meaning and use. 6277 6278 Fixed a possible allocation overrun during internal object copy in 6279 AcpiUtCopySimpleObject. The original code did not correctly handle the 6280 case 6281 where the object to be copied was a namespace node. Lin Ming. ACPICA BZ 6282 847. 6283 6284 Updated the allocation dump routine, AcpiUtDumpAllocation and fixed a 6285 possible access beyond end-of-allocation. Also, now fully validate 6286 descriptor 6287 (size and type) before output. Lin Ming, Bob Moore. ACPICA BZ 847 6288 6289 Example Code and Data Size: These are the sizes for the OS-independent 6290 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6291 debug version of the code includes the debug output trace mechanism and 6292 has a 6293 much larger code and data size. 6294 6295 Previous Release: 6296 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total 6297 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total 6298 Current Release: 6299 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total 6300 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total 6301 6302 2) iASL Compiler/Disassembler and Tools: 6303 6304 iASL: Implemented Min/Max/Len/Gran validation for address resource 6305 descriptors. This change implements validation for the address fields 6306 that 6307 are common to all address-type resource descriptors. These checks are 6308 implemented: Checks for valid Min/Max, length within the Min/Max window, 6309 valid granularity, Min/Max a multiple of granularity, and _MIF/_MAF as 6310 per 6311 table 6-40 in the ACPI 4.0a specification. Also split the large 6312 aslrestype1.c 6313 and aslrestype2.c files into five new files. ACPICA BZ 840. 6314 6315 iASL: Added support for the _Wxx predefined names. This support was 6316 missing 6317 and these names were not recognized by the compiler as valid predefined 6318 names. ACPICA BZ 851. 6319 6320 iASL: Added an error for all predefined names that are defined to return 6321 no 6322 value and thus must be implemented as Control Methods. These include all 6323 of 6324 the _Lxx, _Exx, _Wxx, and _Qxx names, as well as some other miscellaneous 6325 names such as _DIS, _INI, _IRC, _OFF, _ON, and _PSx. ACPICA BZ 850, 856. 6326 6327 iASL: Implemented the -ts option to emit hex AML data in ASL format, as 6328 an 6329 ASL Buffer. Allows ACPI tables to be easily included within ASL files, to 6330 be 6331 dynamically loaded via the Load() operator. Also cleaned up output for 6332 the 6333 - 6334 ta and -tc options. ACPICA BZ 853. 6335 6336 Tests: Added a new file with examples of extended iASL error checking. 6337 Demonstrates the advanced error checking ability of the iASL compiler. 6338 Available at tests/misc/badcode.asl. 6339 6340 ---------------------------------------- 6341 31 March 2010. Summary of changes for version 20100331: 6342 6343 1) ACPI CA Core Subsystem: 6344 6345 Completed a major update for the GPE support in order to improve support 6346 for 6347 shared GPEs and to simplify both host OS and ACPICA code. Added a 6348 reference 6349 count mechanism to support shared GPEs that require multiple device 6350 drivers. 6351 Several external interfaces have changed. One external interface has been 6352 removed. One new external interface was added. Most of the GPE external 6353 interfaces now use the GPE spinlock instead of the events mutex (and the 6354 Flags parameter for many GPE interfaces has been removed.) See the 6355 updated 6356 ACPICA Programmer Reference for details. Matthew Garrett, Bob Moore, 6357 Rafael 6358 Wysocki. ACPICA BZ 831. 6359 6360 Changed: 6361 AcpiEnableGpe, AcpiDisableGpe, AcpiClearGpe, AcpiGetGpeStatus 6362 Removed: 6363 AcpiSetGpeType 6364 New: 6365 AcpiSetGpe 6366 6367 Implemented write support for DataTable operation regions. These regions 6368 are 6369 defined via the DataTableRegion() operator. Previously, only read support 6370 was 6371 implemented. The ACPI specification allows DataTableRegions to be 6372 read/write, 6373 however. 6374 6375 Implemented a new subsystem option to force a copy of the DSDT to local 6376 memory. Optionally copy the entire DSDT to local memory (instead of 6377 simply 6378 mapping it.) There are some (albeit very rare) BIOSs that corrupt or 6379 replace 6380 the original DSDT, creating the need for this option. Default is FALSE, 6381 do 6382 not copy the DSDT. 6383 6384 Implemented detection of a corrupted or replaced DSDT. This change adds 6385 support to detect a DSDT that has been corrupted and/or replaced from 6386 outside 6387 the OS (by firmware). This is typically catastrophic for the system, but 6388 has 6389 been seen on some machines. Once this problem has been detected, the DSDT 6390 copy option can be enabled via system configuration. Lin Ming, Bob Moore. 6391 6392 Fixed two problems with AcpiReallocateRootTable during the root table 6393 copy. 6394 When copying the root table to the new allocation, the length used was 6395 incorrect. The new size was used instead of the current table size, 6396 meaning 6397 too much data was copied. Also, the count of available slots for ACPI 6398 tables 6399 was not set correctly. Alexey Starikovskiy, Bob Moore. 6400 6401 Example Code and Data Size: These are the sizes for the OS-independent 6402 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6403 debug version of the code includes the debug output trace mechanism and 6404 has a 6405 much larger code and data size. 6406 6407 Previous Release: 6408 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total 6409 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total 6410 Current Release: 6411 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total 6412 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total 6413 6414 2) iASL Compiler/Disassembler and Tools: 6415 6416 iASL: Implement limited typechecking for values returned from predefined 6417 control methods. The type of any returned static (unnamed) object is now 6418 validated. For example, Return(1). ACPICA BZ 786. 6419 6420 iASL: Fixed a predefined name object verification regression. Fixes a 6421 problem 6422 introduced in version 20100304. An error is incorrectly generated if a 6423 predefined name is declared as a static named object with a value defined 6424 using the keywords "Zero", "One", or "Ones". Lin Ming. 6425 6426 iASL: Added Windows 7 support for the -g option (get local ACPI tables) 6427 by 6428 reducing the requested registry access rights. ACPICA BZ 842. 6429 6430 Disassembler: fixed a possible fault when generating External() 6431 statements. 6432 Introduced in commit ae7d6fd: Properly handle externals with parent- 6433 prefix 6434 (carat). Fixes a string length allocation calculation. Lin Ming. 6435 6436 ---------------------------------------- 6437 04 March 2010. Summary of changes for version 20100304: 6438 6439 1) ACPI CA Core Subsystem: 6440 6441 Fixed a possible problem with the AML Mutex handling function 6442 AcpiExReleaseMutex where the function could fault under the very rare 6443 condition when the interpreter has blocked, the interpreter lock is 6444 released, 6445 the interpreter is then reentered via the same thread, and attempts to 6446 acquire an AML mutex that was previously acquired. FreeBSD report 140979. 6447 Lin 6448 Ming. 6449 6450 Implemented additional configuration support for the AML "Debug Object". 6451 Output from the debug object can now be enabled via a global variable, 6452 AcpiGbl_EnableAmlDebugObject. This will assist with remote machine 6453 debugging. 6454 This debug output is now available in the release version of ACPICA 6455 instead 6456 of just the debug version. Also, the entire debug output module can now 6457 be 6458 configured out of the ACPICA build if desired. One new file added, 6459 executer/exdebug.c. Lin Ming, Bob Moore. 6460 6461 Added header support for the ACPI MCHI table (Management Controller Host 6462 Interface Table). This table was added in ACPI 4.0, but the defining 6463 document 6464 has only recently become available. 6465 6466 Standardized output of integer values for ACPICA warnings/errors. Always 6467 use 6468 0x prefix for hex output, always use %u for unsigned integer decimal 6469 output. 6470 Affects ACPI_INFO, ACPI_ERROR, ACPI_EXCEPTION, and ACPI_WARNING (about 6471 400 6472 invocations.) These invocations were converted from the original 6473 ACPI_DEBUG_PRINT invocations and were not consistent. ACPICA BZ 835. 6474 6475 Example Code and Data Size: These are the sizes for the OS-independent 6476 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6477 debug version of the code includes the debug output trace mechanism and 6478 has a 6479 much larger code and data size. 6480 6481 Previous Release: 6482 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total 6483 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total 6484 Current Release: 6485 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total 6486 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total 6487 6488 2) iASL Compiler/Disassembler and Tools: 6489 6490 iASL: Implemented typechecking support for static (non-control method) 6491 predefined named objects that are declared with the Name() operator. For 6492 example, the type of this object is now validated to be of type Integer: 6493 Name(_BBN, 1). This change migrates the compiler to using the core 6494 predefined 6495 name table instead of maintaining a local version. Added a new file, 6496 aslpredef.c. ACPICA BZ 832. 6497 6498 Disassembler: Added support for the ACPI 4.0 MCHI table. 6499 6500 ---------------------------------------- 6501 21 January 2010. Summary of changes for version 20100121: 6502 6503 1) ACPI CA Core Subsystem: 6504 6505 Added the 2010 copyright to all module headers and signons. This affects 6506 virtually every file in the ACPICA core subsystem, the iASL compiler, the 6507 tools/utilities, and the test suites. 6508 6509 Implemented a change to the AcpiGetDevices interface to eliminate 6510 unnecessary 6511 invocations of the _STA method. In the case where a specific _HID is 6512 requested, do not run _STA until a _HID match is found. This eliminates 6513 potentially dozens of _STA calls during a search for a particular 6514 device/HID, 6515 which in turn can improve boot times. ACPICA BZ 828. Lin Ming. 6516 6517 Implemented an additional repair for predefined method return values. 6518 Attempt 6519 to repair unexpected NULL elements within returned Package objects. 6520 Create 6521 an 6522 Integer of value zero, a NULL String, or a zero-length Buffer as 6523 appropriate. 6524 ACPICA BZ 818. Lin Ming, Bob Moore. 6525 6526 Removed the obsolete ACPI_INTEGER data type. This type was introduced as 6527 the 6528 code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0 6529 (with 6530 64-bit AML integers). It is now obsolete and this change removes it from 6531 the 6532 ACPICA code base, replaced by UINT64. The original typedef has been 6533 retained 6534 for now for compatibility with existing device driver code. ACPICA BZ 6535 824. 6536 6537 Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field 6538 in 6539 the parse tree object. 6540 6541 Added additional warning options for the gcc-4 generation. Updated the 6542 source 6543 accordingly. This includes some code restructuring to eliminate 6544 unreachable 6545 code, elimination of some gotos, elimination of unused return values, 6546 some 6547 additional casting, and removal of redundant declarations. 6548 6549 Example Code and Data Size: These are the sizes for the OS-independent 6550 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6551 debug version of the code includes the debug output trace mechanism and 6552 has a 6553 much larger code and data size. 6554 6555 Previous Release: 6556 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 6557 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 6558 Current Release: 6559 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total 6560 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total 6561 6562 2) iASL Compiler/Disassembler and Tools: 6563 6564 No functional changes for this release. 6565 6566 ---------------------------------------- 6567 14 December 2009. Summary of changes for version 20091214: 6568 6569 1) ACPI CA Core Subsystem: 6570 6571 Enhanced automatic data type conversions for predefined name repairs. 6572 This 6573 change expands the automatic repairs/conversions for predefined name 6574 return 6575 values to make Integers, Strings, and Buffers fully interchangeable. 6576 Also, 6577 a 6578 Buffer can be converted to a Package of Integers if necessary. The 6579 nsrepair.c 6580 module was completely restructured. Lin Ming, Bob Moore. 6581 6582 Implemented automatic removal of null package elements during predefined 6583 name 6584 repairs. This change will automatically remove embedded and trailing NULL 6585 package elements from returned package objects that are defined to 6586 contain 6587 a 6588 variable number of sub-packages. The driver is then presented with a 6589 package 6590 with no null elements to deal with. ACPICA BZ 819. 6591 6592 Implemented a repair for the predefined _FDE and _GTM names. The expected 6593 return value for both names is a Buffer of 5 DWORDs. This repair fixes 6594 two 6595 possible problems (both seen in the field), where a package of integers 6596 is 6597 returned, or a buffer of BYTEs is returned. With assistance from Jung-uk 6598 Kim. 6599 6600 Implemented additional module-level code support. This change will 6601 properly 6602 execute module-level code that is not at the root of the namespace (under 6603 a 6604 Device object, etc.). Now executes the code within the current scope 6605 instead 6606 of the root. ACPICA BZ 762. Lin Ming. 6607 6608 Fixed possible mutex acquisition errors when running _REG methods. Fixes 6609 a 6610 problem where mutex errors can occur when running a _REG method that is 6611 in 6612 the same scope as a method-defined operation region or an operation 6613 region 6614 under a module-level IF block. This type of code is rare, so the problem 6615 has 6616 not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore. 6617 6618 Fixed a possible memory leak during module-level code execution. An 6619 object 6620 could be leaked for each block of executed module-level code if the 6621 interpreter slack mode is enabled This change deletes any implicitly 6622 returned 6623 object from the module-level code block. Lin Ming. 6624 6625 Removed messages for successful predefined repair(s). The repair 6626 mechanism 6627 was considered too wordy. Now, messages are only unconditionally emitted 6628 if 6629 the return object cannot be repaired. Existing messages for successful 6630 repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ 6631 827. 6632 6633 Example Code and Data Size: These are the sizes for the OS-independent 6634 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6635 debug version of the code includes the debug output trace mechanism and 6636 has a 6637 much larger code and data size. 6638 6639 Previous Release: 6640 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 6641 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 6642 Current Release: 6643 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 6644 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 6645 6646 2) iASL Compiler/Disassembler and Tools: 6647 6648 iASL: Fixed a regression introduced in 20091112 where intermediate .SRC 6649 files 6650 were no longer automatically removed at the termination of the compile. 6651 6652 acpiexec: Implemented the -f option to specify default region fill value. 6653 This option specifies the value used to initialize buffers that simulate 6654 operation regions. Default value is zero. Useful for debugging problems 6655 that 6656 depend on a specific initial value for a region or field. 6657 6658 ---------------------------------------- 6659 12 November 2009. Summary of changes for version 20091112: 6660 6661 1) ACPI CA Core Subsystem: 6662 6663 Implemented a post-order callback to AcpiWalkNamespace. The existing 6664 interface only has a pre-order callback. This change adds an additional 6665 parameter for a post-order callback which will be more useful for bus 6666 scans. 6667 ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference. 6668 6669 Modified the behavior of the operation region memory mapping cache for 6670 SystemMemory. Ensure that the memory mappings created for operation 6671 regions 6672 do not cross 4K page boundaries. Crossing a page boundary while mapping 6673 regions can cause kernel warnings on some hosts if the pages have 6674 different 6675 attributes. Such regions are probably BIOS bugs, and this is the 6676 workaround. 6677 Linux BZ 14445. Lin Ming. 6678 6679 Implemented an automatic repair for predefined methods that must return 6680 sorted lists. This change will repair (by sorting) packages returned by 6681 _ALR, 6682 _PSS, and _TSS. Drivers can now assume that the packages are correctly 6683 sorted 6684 and do not contain NULL package elements. Adds one new file, 6685 namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore. 6686 6687 Fixed a possible fault during predefined name validation if a return 6688 Package 6689 object contains NULL elements. Also adds a warning if a NULL element is 6690 followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement 6691 may 6692 include repair or removal of all such NULL elements where possible. 6693 6694 Implemented additional module-level executable AML code support. This 6695 change 6696 will execute module-level code that is not at the root of the namespace 6697 (under a Device object, etc.) at table load time. Module-level executable 6698 AML 6699 code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming. 6700 6701 Implemented a new internal function to create Integer objects. This 6702 function 6703 simplifies miscellaneous object creation code. ACPICA BZ 823. 6704 6705 Reduced the severity of predefined repair messages, Warning to Info. 6706 Since 6707 the object was successfully repaired, a warning is too severe. Reduced to 6708 an 6709 info message for now. These messages may eventually be changed to debug- 6710 only. 6711 ACPICA BZ 812. 6712 6713 Example Code and Data Size: These are the sizes for the OS-independent 6714 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6715 debug version of the code includes the debug output trace mechanism and 6716 has a 6717 much larger code and data size. 6718 6719 Previous Release: 6720 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 6721 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 6722 Current Release: 6723 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 6724 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 6725 6726 2) iASL Compiler/Disassembler and Tools: 6727 6728 iASL: Implemented Switch() with While(1) so that Break works correctly. 6729 This 6730 change correctly implements the Switch operator with a surrounding 6731 While(1) 6732 so that the Break operator works as expected. ACPICA BZ 461. Lin Ming. 6733 6734 iASL: Added a message if a package initializer list is shorter than 6735 package 6736 length. Adds a new remark for a Package() declaration if an initializer 6737 list 6738 exists, but is shorter than the declared length of the package. Although 6739 technically legal, this is probably a coding error and it is seen in the 6740 field. ACPICA BZ 815. Lin Ming, Bob Moore. 6741 6742 iASL: Fixed a problem where the compiler could fault after the maximum 6743 number 6744 of errors was reached (200). 6745 6746 acpixtract: Fixed a possible warning for pointer cast if the compiler 6747 warning 6748 level set very high. 6749 6750 ---------------------------------------- 6751 13 October 2009. Summary of changes for version 20091013: 6752 6753 1) ACPI CA Core Subsystem: 6754 6755 Fixed a problem where an Operation Region _REG method could be executed 6756 more 6757 than once. If a custom address space handler is installed by the host 6758 before 6759 the "initialize operation regions" phase of the ACPICA initialization, 6760 any 6761 _REG methods for that address space could be executed twice. This change 6762 fixes the problem. ACPICA BZ 427. Lin Ming. 6763 6764 Fixed a possible memory leak for the Scope() ASL operator. When the exact 6765 invocation of "Scope(\)" is executed (change scope to root), one internal 6766 operand object was leaked. Lin Ming. 6767 6768 Implemented a run-time repair for the _MAT predefined method. If the _MAT 6769 return value is defined as a Field object in the AML, and the field 6770 size is less than or equal to the default width of an integer (32 or 6771 64),_MAT 6772 can incorrectly return an Integer instead of a Buffer. ACPICA now 6773 automatically repairs this problem. ACPICA BZ 810. 6774 6775 Implemented a run-time repair for the _BIF and _BIX predefined methods. 6776 The 6777 "OEM Information" field is often incorrectly returned as an Integer with 6778 value zero if the field is not supported by the platform. This is due to 6779 an 6780 ambiguity in the ACPI specification. The field should always be a string. 6781 ACPICA now automatically repairs this problem by returning a NULL string 6782 within the returned Package. ACPICA BZ 807. 6783 6784 Example Code and Data Size: These are the sizes for the OS-independent 6785 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6786 debug version of the code includes the debug output trace mechanism and 6787 has a 6788 much larger code and data size. 6789 6790 Previous Release: 6791 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 6792 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 6793 Current Release: 6794 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 6795 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 6796 6797 2) iASL Compiler/Disassembler and Tools: 6798 6799 Disassembler: Fixed a problem where references to external symbols that 6800 contained one or more parent-prefixes (carats) were not handled 6801 correctly, 6802 possibly causing a fault. ACPICA BZ 806. Lin Ming. 6803 6804 Disassembler: Restructured the code so that all functions that handle 6805 external symbols are in a single module. One new file is added, 6806 common/dmextern.c. 6807 6808 AML Debugger: Added a max count argument for the Batch command (which 6809 executes multiple predefined methods within the namespace.) 6810 6811 iASL: Updated the compiler documentation (User Reference.) Available at 6812 http://www.acpica.org/documentation/. ACPICA BZ 750. 6813 6814 AcpiXtract: Updated for Lint and other formatting changes. Close all open 6815 files. 6816 6817 ---------------------------------------- 6818 03 September 2009. Summary of changes for version 20090903: 6819 6820 1) ACPI CA Core Subsystem: 6821 6822 For Windows Vista compatibility, added the automatic execution of an _INI 6823 method located at the namespace root (\_INI). This method is executed at 6824 table load time. This support is in addition to the automatic execution 6825 of 6826 \_SB._INI. Lin Ming. 6827 6828 Fixed a possible memory leak in the interpreter for AML package objects 6829 if 6830 the package initializer list is longer than the defined size of the 6831 package. 6832 This apparently can only happen if the BIOS changes the package size on 6833 the 6834 fly (seen in a _PSS object), as ASL compilers do not allow this. The 6835 interpreter will truncate the package to the defined size (and issue an 6836 error 6837 message), but previously could leave the extra objects undeleted if they 6838 were 6839 pre-created during the argument processing (such is the case if the 6840 package 6841 consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805. 6842 6843 Fixed a problem seen when a Buffer or String is stored to itself via ASL. 6844 This has been reported in the field. Previously, ACPICA would zero out 6845 the 6846 buffer/string. Now, the operation is treated as a noop. Provides Windows 6847 compatibility. ACPICA BZ 803. Lin Ming. 6848 6849 Removed an extraneous error message for ASL constructs of the form 6850 Store(LocalX,LocalX) when LocalX is uninitialized. These curious 6851 statements 6852 are seen in many BIOSs and are once again treated as NOOPs and no error 6853 is 6854 emitted when they are encountered. ACPICA BZ 785. 6855 6856 Fixed an extraneous warning message if a _DSM reserved method returns a 6857 Package object. _DSM can return any type of object, so validation on the 6858 return type cannot be performed. ACPICA BZ 802. 6859 6860 Example Code and Data Size: These are the sizes for the OS-independent 6861 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6862 debug version of the code includes the debug output trace mechanism and 6863 has a 6864 much larger code and data size. 6865 6866 Previous Release: 6867 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 6868 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 6869 Current Release: 6870 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 6871 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 6872 6873 2) iASL Compiler/Disassembler and Tools: 6874 6875 iASL: Fixed a problem with the use of the Alias operator and Resource 6876 Templates. The correct alias is now constructed and no error is emitted. 6877 ACPICA BZ 738. 6878 6879 iASL: Implemented the -I option to specify additional search directories 6880 for 6881 include files. Allows multiple additional search paths for include files. 6882 Directories are searched in the order specified on the command line 6883 (after 6884 the local directory is searched.) ACPICA BZ 800. 6885 6886 iASL: Fixed a problem where the full pathname for include files was not 6887 emitted for warnings/errors. This caused the IDE support to not work 6888 properly. ACPICA BZ 765. 6889 6890 iASL: Implemented the -@ option to specify a Windows-style response file 6891 containing additional command line options. ACPICA BZ 801. 6892 6893 AcpiExec: Added support to load multiple AML files simultaneously (such 6894 as 6895 a 6896 DSDT and multiple SSDTs). Also added support for wildcards within the AML 6897 pathname. These features allow all machine tables to be easily loaded and 6898 debugged together. ACPICA BZ 804. 6899 6900 Disassembler: Added missing support for disassembly of HEST table Error 6901 Bank 6902 subtables. 6903 6904 ---------------------------------------- 6905 30 July 2009. Summary of changes for version 20090730: 6906 6907 The ACPI 4.0 implementation for ACPICA is complete with this release. 6908 6909 1) ACPI CA Core Subsystem: 6910 6911 ACPI 4.0: Added header file support for all new and changed ACPI tables. 6912 Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are 6913 new 6914 for ACPI 4.0, but have previously been supported in ACPICA are: CPEP, 6915 BERT, 6916 EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT. 6917 There 6918 have been some ACPI 4.0 changes to other existing tables. Split the large 6919 actbl1.h header into the existing actbl2.h header. ACPICA BZ 774. 6920 6921 ACPI 4.0: Implemented predefined name validation for all new names. There 6922 are 6923 31 new names in ACPI 4.0. The predefined validation module was split into 6924 two 6925 files. The new file is namespace/nsrepair.c. ACPICA BZ 770. 6926 6927 Implemented support for so-called "module-level executable code". This is 6928 executable AML code that exists outside of any control method and is 6929 intended 6930 to be executed at table load time. Although illegal since ACPI 2.0, this 6931 type 6932 of code still exists and is apparently still being created. Blocks of 6933 this 6934 code are now detected and executed as intended. Currently, the code 6935 blocks 6936 must exist under either an If, Else, or While construct; these are the 6937 typical cases seen in the field. ACPICA BZ 762. Lin Ming. 6938 6939 Implemented an automatic dynamic repair for predefined names that return 6940 nested Package objects. This applies to predefined names that are defined 6941 to 6942 return a variable-length Package of sub-packages. If the number of sub- 6943 packages is one, BIOS code is occasionally seen that creates a simple 6944 single 6945 package with no sub-packages. This code attempts to fix the problem by 6946 wrapping a new package object around the existing package. These methods 6947 can 6948 be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA 6949 BZ 6950 790. 6951 6952 Fixed a regression introduced in 20090625 for the AcpiGetDevices 6953 interface. 6954 The _HID/_CID matching was broken and no longer matched IDs correctly. 6955 ACPICA 6956 BZ 793. 6957 6958 Fixed a problem with AcpiReset where the reset would silently fail if the 6959 register was one of the protected I/O ports. AcpiReset now bypasses the 6960 port 6961 validation mechanism. This may eventually be driven into the 6962 AcpiRead/Write 6963 interfaces. 6964 6965 Fixed a regression related to the recent update of the AcpiRead/Write 6966 interfaces. A sleep/suspend could fail if the optional PM2 Control 6967 register 6968 does not exist during an attempt to write the Bus Master Arbitration bit. 6969 (However, some hosts already delete the code that writes this bit, and 6970 the 6971 code may in fact be obsolete at this date.) ACPICA BZ 799. 6972 6973 Fixed a problem where AcpiTerminate could fault if inadvertently called 6974 twice 6975 in succession. ACPICA BZ 795. 6976 6977 Example Code and Data Size: These are the sizes for the OS-independent 6978 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6979 debug version of the code includes the debug output trace mechanism and 6980 has a 6981 much larger code and data size. 6982 6983 Previous Release: 6984 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 6985 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 6986 Current Release: 6987 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 6988 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 6989 6990 2) iASL Compiler/Disassembler and Tools: 6991 6992 ACPI 4.0: Implemented disassembler support for all new ACPI tables and 6993 changes to existing tables. ACPICA BZ 775. 6994 6995 ---------------------------------------- 6996 25 June 2009. Summary of changes for version 20090625: 6997 6998 The ACPI 4.0 Specification was released on June 16 and is available at 6999 www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will 7000 continue for the next few releases. 7001 7002 1) ACPI CA Core Subsystem: 7003 7004 ACPI 4.0: Implemented interpreter support for the IPMI operation region 7005 address space. Includes support for bi-directional data buffers and an 7006 IPMI 7007 address space handler (to be installed by an IPMI device driver.) ACPICA 7008 BZ 7009 773. Lin Ming. 7010 7011 ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT. 7012 Includes 7013 support in both the header files and the disassembler. 7014 7015 Completed a major update for the AcpiGetObjectInfo external interface. 7016 Changes include: 7017 - Support for variable, unlimited length HID, UID, and CID strings. 7018 - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA, 7019 etc.) 7020 - Call the _SxW power methods on behalf of a device object. 7021 - Determine if a device is a PCI root bridge. 7022 - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO. 7023 These changes will require an update to all callers of this interface. 7024 See 7025 the updated ACPICA Programmer Reference for details. One new source file 7026 has 7027 been added - utilities/utids.c. ACPICA BZ 368, 780. 7028 7029 Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit 7030 transfers. The Value parameter has been extended from 32 bits to 64 bits 7031 in 7032 order to support new ACPI 4.0 tables. These changes will require an 7033 update 7034 to 7035 all callers of these interfaces. See the ACPICA Programmer Reference for 7036 details. ACPICA BZ 768. 7037 7038 Fixed several problems with AcpiAttachData. The handler was not invoked 7039 when 7040 the host node was deleted. The data sub-object was not automatically 7041 deleted 7042 when the host node was deleted. The interface to the handler had an 7043 unused 7044 parameter, this was removed. ACPICA BZ 778. 7045 7046 Enhanced the function that dumps ACPI table headers. All non-printable 7047 characters in the string fields are now replaced with '?' (Signature, 7048 OemId, 7049 OemTableId, and CompilerId.) ACPI tables with non-printable characters in 7050 these fields are occasionally seen in the field. ACPICA BZ 788. 7051 7052 Fixed a problem with predefined method repair code where the code that 7053 attempts to repair/convert an object of incorrect type is only executed 7054 on 7055 the first time the predefined method is called. The mechanism that 7056 disables 7057 warnings on subsequent calls was interfering with the repair mechanism. 7058 ACPICA BZ 781. 7059 7060 Fixed a possible memory leak in the predefined validation/repair code 7061 when 7062 a 7063 buffer is automatically converted to an expected string object. 7064 7065 Removed obsolete 16-bit files from the distribution and from the current 7066 git 7067 tree head. ACPICA BZ 776. 7068 7069 Example Code and Data Size: These are the sizes for the OS-independent 7070 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7071 debug version of the code includes the debug output trace mechanism and 7072 has a 7073 much larger code and data size. 7074 7075 Previous Release: 7076 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 7077 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 7078 Current Release: 7079 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 7080 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 7081 7082 2) iASL Compiler/Disassembler and Tools: 7083 7084 ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI 7085 operation region keyword. ACPICA BZ 771, 772. Lin Ming. 7086 7087 ACPI 4.0: iASL - implemented compile-time validation support for all new 7088 predefined names and control methods (31 total). ACPICA BZ 769. 7089 7090 ---------------------------------------- 7091 21 May 2009. Summary of changes for version 20090521: 7092 7093 1) ACPI CA Core Subsystem: 7094 7095 Disabled the preservation of the SCI enable bit in the PM1 control 7096 register. 7097 The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification 7098 to 7099 be 7100 a "preserved" bit - "OSPM always preserves this bit position", section 7101 4.7.3.2.1. However, some machines fail if this bit is in fact preserved 7102 because the bit needs to be explicitly set by the OS as a workaround. No 7103 machines fail if the bit is not preserved. Therefore, ACPICA no longer 7104 attempts to preserve this bit. 7105 7106 Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or 7107 incorrectly formed _PRT package could cause a fault. Added validation to 7108 ensure that each package element is actually a sub-package. 7109 7110 Implemented a new interface to install or override a single control 7111 method, 7112 AcpiInstallMethod. This interface is useful when debugging in order to 7113 repair 7114 an existing method or to install a missing method without having to 7115 override 7116 the entire ACPI table. See the ACPICA Programmer Reference for use and 7117 examples. Lin Ming, Bob Moore. 7118 7119 Fixed several reference count issues with the DdbHandle object that is 7120 created from a Load or LoadTable operator. Prevent premature deletion of 7121 the 7122 object. Also, mark the object as invalid once the table has been 7123 unloaded. 7124 This is needed because the handle itself may not be deleted after the 7125 table 7126 unload, depending on whether it has been stored in a named object by the 7127 caller. Lin Ming. 7128 7129 Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple 7130 mutexes of the same sync level are acquired but then not released in 7131 strict 7132 opposite order, the internally maintained Current Sync Level becomes 7133 confused 7134 and can cause subsequent execution errors. ACPICA BZ 471. 7135 7136 Changed the allowable release order for ASL mutex objects. The ACPI 4.0 7137 specification has been changed to make the SyncLevel for mutex objects 7138 more 7139 useful. When releasing a mutex, the SyncLevel of the mutex must now be 7140 the 7141 same as the current sync level. This makes more sense than the previous 7142 rule 7143 (SyncLevel less than or equal). This change updates the code to match the 7144 specification. 7145 7146 Fixed a problem with the local version of the AcpiOsPurgeCache function. 7147 The 7148 (local) cache must be locked during all cache object deletions. Andrew 7149 Baumann. 7150 7151 Updated the Load operator to use operation region interfaces. This 7152 replaces 7153 direct memory mapping with region access calls. Now, all region accesses 7154 go 7155 through the installed region handler as they should. 7156 7157 Simplified and optimized the NsGetNextNode function. Reduced parameter 7158 count 7159 and reduced code for this frequently used function. 7160 7161 Example Code and Data Size: These are the sizes for the OS-independent 7162 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7163 debug version of the code includes the debug output trace mechanism and 7164 has a 7165 much larger code and data size. 7166 7167 Previous Release: 7168 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 7169 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 7170 Current Release: 7171 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 7172 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 7173 7174 2) iASL Compiler/Disassembler and Tools: 7175 7176 Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some 7177 problems 7178 with sub-table disassembly and handling invalid sub-tables. Attempt 7179 recovery 7180 after an invalid sub-table ID. 7181 7182 ---------------------------------------- 7183 22 April 2009. Summary of changes for version 20090422: 7184 7185 1) ACPI CA Core Subsystem: 7186 7187 Fixed a compatibility issue with the recently released I/O port 7188 protection 7189 mechanism. For windows compatibility, 1) On a port protection violation, 7190 simply ignore the request and do not return an exception (allow the 7191 control 7192 method to continue execution.) 2) If only part of the request overlaps a 7193 protected port, read/write the individual ports that are not protected. 7194 Linux 7195 BZ 13036. Lin Ming 7196 7197 Enhanced the execution of the ASL/AML BreakPoint operator so that it 7198 actually 7199 breaks into the AML debugger if the debugger is present. This matches the 7200 ACPI-defined behavior. 7201 7202 Fixed several possible warnings related to the use of the configurable 7203 ACPI_THREAD_ID. This type can now be configured as either an integer or a 7204 pointer with no warnings. Also fixes several warnings in printf-like 7205 statements for the 64-bit build when the type is configured as a pointer. 7206 ACPICA BZ 766, 767. 7207 7208 Fixed a number of possible warnings when compiling with gcc 4+ (depending 7209 on 7210 warning options.) Examples include printf formats, aliasing, unused 7211 globals, 7212 missing prototypes, missing switch default statements, use of non-ANSI 7213 library functions, use of non-ANSI constructs. See generate/unix/Makefile 7214 for 7215 a list of warning options used with gcc 3 and 4. ACPICA BZ 735. 7216 7217 Example Code and Data Size: These are the sizes for the OS-independent 7218 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7219 debug version of the code includes the debug output trace mechanism and 7220 has a 7221 much larger code and data size. 7222 7223 Previous Release: 7224 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 7225 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 7226 Current Release: 7227 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 7228 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 7229 7230 2) iASL Compiler/Disassembler and Tools: 7231 7232 iASL: Fixed a generation warning from Bison 2.3 and fixed several 7233 warnings 7234 on 7235 the 64-bit build. 7236 7237 iASL: Fixed a problem where the Unix/Linux versions of the compiler could 7238 not 7239 correctly digest Windows/DOS formatted files (with CR/LF). 7240 7241 iASL: Added a new option for "quiet mode" (-va) that produces only the 7242 compilation summary, not individual errors and warnings. Useful for large 7243 batch compilations. 7244 7245 AcpiExec: Implemented a new option (-z) to enable a forced 7246 semaphore/mutex 7247 timeout that can be used to detect hang conditions during execution of 7248 AML 7249 code (includes both internal semaphores and AML-defined mutexes and 7250 events.) 7251 7252 Added new makefiles for the generation of acpica in a generic unix-like 7253 environment. These makefiles are intended to generate the acpica tools 7254 and 7255 utilities from the original acpica git source tree structure. 7256 7257 Test Suites: Updated and cleaned up the documentation files. Updated the 7258 copyrights to 2009, affecting all source files. Use the new version of 7259 iASL 7260 with quiet mode. Increased the number of available semaphores in the 7261 Windows 7262 OSL, allowing the aslts to execute fully on Windows. For the Unix OSL, 7263 added 7264 an alternate implementation of the semaphore timeout to allow aslts to 7265 execute fully on Cygwin. 7266 7267 ---------------------------------------- 7268 20 March 2009. Summary of changes for version 20090320: 7269 7270 1) ACPI CA Core Subsystem: 7271 7272 Fixed a possible race condition between AcpiWalkNamespace and dynamic 7273 table 7274 unloads. Added a reader/writer locking mechanism to allow multiple 7275 concurrent 7276 namespace walks (readers), but block a dynamic table unload until it can 7277 gain 7278 exclusive write access to the namespace. This fixes a problem where a 7279 table 7280 unload could (possibly catastrophically) delete the portion of the 7281 namespace 7282 that is currently being examined by a walk. Adds a new file, utlock.c, 7283 that 7284 implements the reader/writer lock mechanism. ACPICA BZ 749. 7285 7286 Fixed a regression introduced in version 20090220 where a change to the 7287 FADT 7288 handling could cause the ACPICA subsystem to access non-existent I/O 7289 ports. 7290 7291 Modified the handling of FADT register and table (FACS/DSDT) addresses. 7292 The 7293 FADT can contain both 32-bit and 64-bit versions of these addresses. 7294 Previously, the 64-bit versions were favored, meaning that if both 32 and 7295 64 7296 versions were valid, but not equal, the 64-bit version was used. This was 7297 found to cause some machines to fail. Now, in this case, the 32-bit 7298 version 7299 is used instead. This now matches the Windows behavior. 7300 7301 Implemented a new mechanism to protect certain I/O ports. Provides 7302 Microsoft 7303 compatibility and protects the standard PC I/O ports from access via AML 7304 code. Adds a new file, hwvalid.c 7305 7306 Fixed a possible extraneous warning message from the FADT support. The 7307 message warns of a 32/64 length mismatch between the legacy and GAS 7308 definitions for a register. 7309 7310 Removed the obsolete AcpiOsValidateAddress OSL interface. This interface 7311 is 7312 made obsolete by the port protection mechanism above. It was previously 7313 used 7314 to validate the entire address range of an operation region, which could 7315 be 7316 incorrect if the range included illegal ports, but fields within the 7317 operation region did not actually access those ports. Validation is now 7318 performed on a per-field basis instead of the entire region. 7319 7320 Modified the handling of the PM1 Status Register ignored bit (bit 11.) 7321 Ignored bits must be "preserved" according to the ACPI spec. Usually, 7322 this 7323 means a read/modify/write when writing to the register. However, for 7324 status 7325 registers, writing a one means clear the event. Writing a zero means 7326 preserve 7327 the event (do not clear.) This behavior is clarified in the ACPI 4.0 7328 spec, 7329 and the ACPICA code now simply always writes a zero to the ignored bit. 7330 7331 Modified the handling of ignored bits for the PM1 A/B Control Registers. 7332 As 7333 per the ACPI specification, for the control registers, preserve 7334 (read/modify/write) all bits that are defined as either reserved or 7335 ignored. 7336 7337 Updated the handling of write-only bits in the PM1 A/B Control Registers. 7338 When reading the register, zero the write-only bits as per the ACPI spec. 7339 ACPICA BZ 443. Lin Ming. 7340 7341 Removed "Linux" from the list of supported _OSI strings. Linux no longer 7342 wants to reply true to this request. The Windows strings are the only 7343 paths 7344 through the AML that are tested and known to work properly. 7345 7346 Previous Release: 7347 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 7348 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 7349 Current Release: 7350 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 7351 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 7352 7353 2) iASL Compiler/Disassembler and Tools: 7354 7355 Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c 7356 and 7357 aetables.c 7358 7359 ---------------------------------------- 7360 20 February 2009. Summary of changes for version 20090220: 7361 7362 1) ACPI CA Core Subsystem: 7363 7364 Optimized the ACPI register locking. Removed locking for reads from the 7365 ACPI 7366 bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock 7367 is 7368 not required when reading the single-bit registers. The 7369 AcpiGetRegisterUnlocked function is no longer needed and has been 7370 removed. 7371 This will improve performance for reads on these registers. ACPICA BZ 7372 760. 7373 7374 Fixed the parameter validation for AcpiRead/Write. Now return 7375 AE_BAD_PARAMETER if the input register pointer is null, and 7376 AE_BAD_ADDRESS 7377 if 7378 the register has an address of zero. Previously, these cases simply 7379 returned 7380 AE_OK. For optional registers such as PM1B status/enable/control, the 7381 caller 7382 should check for a valid register address before calling. ACPICA BZ 748. 7383 7384 Renamed the external ACPI bit register access functions. Renamed 7385 AcpiGetRegister and AcpiSetRegister to clarify the purpose of these 7386 functions. The new names are AcpiReadBitRegister and 7387 AcpiWriteBitRegister. 7388 Also, restructured the code for these functions by simplifying the code 7389 path 7390 and condensing duplicate code to reduce code size. 7391 7392 Added new functions to transparently handle the possibly split PM1 A/B 7393 registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two 7394 functions 7395 now handle the split registers for PM1 Status, Enable, and Control. 7396 ACPICA 7397 BZ 7398 746. 7399 7400 Added a function to handle the PM1 control registers, 7401 AcpiHwWritePm1Control. 7402 This function writes both of the PM1 control registers (A/B). These 7403 registers 7404 are different than the PM1 A/B status and enable registers in that 7405 different 7406 values can be written to the A/B registers. Most notably, the SLP_TYP 7407 bits 7408 can be different, as per the values returned from the _Sx predefined 7409 methods. 7410 7411 Removed an extra register write within AcpiHwClearAcpiStatus. This 7412 function 7413 was writing an optional PM1B status register twice. The existing call to 7414 the 7415 low-level AcpiHwRegisterWrite automatically handles a possibly split PM1 7416 A/B 7417 register. ACPICA BZ 751. 7418 7419 Split out the PM1 Status registers from the FADT. Added new globals for 7420 these 7421 registers (A/B), similar to the way the PM1 Enable registers are handled. 7422 Instead of overloading the FADT Event Register blocks. This makes the 7423 code 7424 clearer and less prone to error. 7425 7426 Fixed the warning message for when the platform contains too many ACPI 7427 tables 7428 for the default size of the global root table data structure. The 7429 calculation 7430 for the truncation value was incorrect. 7431 7432 Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this 7433 obsolete macro, since it is now a simple reference to ->common.type. 7434 There 7435 were about 150 invocations of the macro across 41 files. ACPICA BZ 755. 7436 7437 Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as 7438 TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to 7439 simply SLEEP_TYPE. ACPICA BZ 754. 7440 7441 Conditionally compile the AcpiSetFirmwareWakingVector64 function. This 7442 function is only needed on 64-bit host operating systems and is thus not 7443 included for 32-bit hosts. 7444 7445 Debug output: print the input and result for invocations of the _OSI 7446 reserved 7447 control method via the ACPI_LV_INFO debug level. Also, reduced some of 7448 the 7449 verbosity of this debug level. Len Brown. 7450 7451 Example Code and Data Size: These are the sizes for the OS-independent 7452 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7453 debug version of the code includes the debug output trace mechanism and 7454 has a 7455 much larger code and data size. 7456 7457 Previous Release: 7458 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 7459 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 7460 Current Release: 7461 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 7462 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 7463 7464 2) iASL Compiler/Disassembler and Tools: 7465 7466 Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the 7467 various legal performance profiles. 7468 7469 ---------------------------------------- 7470 23 January 2009. Summary of changes for version 20090123: 7471 7472 1) ACPI CA Core Subsystem: 7473 7474 Added the 2009 copyright to all module headers and signons. This affects 7475 virtually every file in the ACPICA core subsystem, the iASL compiler, and 7476 the tools/utilities. 7477 7478 Implemented a change to allow the host to override any ACPI table, 7479 including 7480 dynamically loaded tables. Previously, only the DSDT could be replaced by 7481 the 7482 host. With this change, the AcpiOsTableOverride interface is called for 7483 each 7484 table found in the RSDT/XSDT during ACPICA initialization, and also 7485 whenever 7486 a table is dynamically loaded via the AML Load operator. 7487 7488 Updated FADT flag definitions, especially the Boot Architecture flags. 7489 7490 Debugger: For the Find command, automatically pad the input ACPI name 7491 with 7492 underscores if the name is shorter than 4 characters. This enables a 7493 match 7494 with the actual namespace entry which is itself padded with underscores. 7495 7496 Example Code and Data Size: These are the sizes for the OS-independent 7497 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7498 debug version of the code includes the debug output trace mechanism and 7499 has a 7500 much larger code and data size. 7501 7502 Previous Release: 7503 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 7504 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 7505 Current Release: 7506 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 7507 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 7508 7509 2) iASL Compiler/Disassembler and Tools: 7510 7511 Fix build error under Bison-2.4. 7512 7513 Dissasembler: Enhanced FADT support. Added decoding of the Boot 7514 Architecture 7515 flags. Now decode all flags, regardless of the FADT version. Flag output 7516 includes the FADT version which first defined each flag. 7517 7518 The iASL -g option now dumps the RSDT to a file (in addition to the FADT 7519 and 7520 DSDT). Windows only. 7521 7522 ---------------------------------------- 7523 04 December 2008. Summary of changes for version 20081204: 7524 7525 1) ACPI CA Core Subsystem: 7526 7527 The ACPICA Programmer Reference has been completely updated and revamped 7528 for 7529 this release. This includes updates to the external interfaces, OSL 7530 interfaces, the overview sections, and the debugger reference. 7531 7532 Several new ACPICA interfaces have been implemented and documented in the 7533 programmer reference: 7534 AcpiReset - Writes the reset value to the FADT-defined reset register. 7535 AcpiDisableAllGpes - Disable all available GPEs. 7536 AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs. 7537 AcpiGetGpeDevice - Get the GPE block device associated with a GPE. 7538 AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs. 7539 AcpiRead - Low-level read ACPI register (was HwLowLevelRead.) 7540 AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.) 7541 7542 Most of the public ACPI hardware-related interfaces have been moved to a 7543 new 7544 file, components/hardware/hwxface.c 7545 7546 Enhanced the FADT parsing and low-level ACPI register access: The ACPI 7547 register lengths within the FADT are now used, and the low level ACPI 7548 register access no longer hardcodes the ACPI register lengths. Given that 7549 there may be some risk in actually trusting the FADT register lengths, a 7550 run- 7551 time option was added to fall back to the default hardcoded lengths if 7552 the 7553 FADT proves to contain incorrect values - UseDefaultRegisterWidths. This 7554 option is set to true for now, and a warning is issued if a suspicious 7555 FADT 7556 register length is overridden with the default value. 7557 7558 Fixed a reference count issue in NsRepairObject. This problem was 7559 introduced 7560 in version 20081031 as part of a fix to repair Buffer objects within 7561 Packages. Lin Ming. 7562 7563 Added semaphore support to the Linux/Unix application OS-services layer 7564 (OSL). ACPICA BZ 448. Lin Ming. 7565 7566 Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes 7567 will 7568 be implemented in the OSL, or will binary semaphores be used instead. 7569 7570 Example Code and Data Size: These are the sizes for the OS-independent 7571 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7572 debug version of the code includes the debug output trace mechanism and 7573 has a 7574 much larger code and data size. 7575 7576 Previous Release: 7577 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 7578 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 7579 Current Release: 7580 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 7581 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 7582 7583 2) iASL Compiler/Disassembler and Tools: 7584 7585 iASL: Completed the '-e' option to include additional ACPI tables in 7586 order 7587 to 7588 aid with disassembly and External statement generation. ACPICA BZ 742. 7589 Lin 7590 Ming. 7591 7592 iASL: Removed the "named object in while loop" error. The compiler cannot 7593 determine how many times a loop will execute. ACPICA BZ 730. 7594 7595 Disassembler: Implemented support for FADT revision 2 (MS extension). 7596 ACPICA 7597 BZ 743. 7598 7599 Disassembler: Updates for several ACPI data tables (HEST, EINJ, and 7600 MCFG). 7601 7602 ---------------------------------------- 7603 31 October 2008. Summary of changes for version 20081031: 7604 7605 1) ACPI CA Core Subsystem: 7606 7607 Restructured the ACPICA header files into public/private. acpi.h now 7608 includes 7609 only the "public" acpica headers. All other acpica headers are "private" 7610 and 7611 should not be included by acpica users. One new file, accommon.h is used 7612 to 7613 include the commonly used private headers for acpica code generation. 7614 Future 7615 plans include moving all private headers to a new subdirectory. 7616 7617 Implemented an automatic Buffer->String return value conversion for 7618 predefined ACPI methods. For these methods (such as _BIF), added 7619 automatic 7620 conversion for return objects that are required to be a String, but a 7621 Buffer 7622 was found instead. This can happen when reading string battery data from 7623 an 7624 operation region, because it used to be difficult to convert the data 7625 from 7626 buffer to string from within the ASL. Ensures that the host OS is 7627 provided 7628 with a valid null-terminated string. Linux BZ 11822. 7629 7630 Updated the FACS waking vector interfaces. Split 7631 AcpiSetFirmwareWakingVector 7632 into two: one for the 32-bit vector, another for the 64-bit vector. This 7633 is 7634 required because the host OS must setup the wake much differently for 7635 each 7636 vector (real vs. protected mode, etc.) and the interface itself should 7637 not 7638 be 7639 deciding which vector to use. Also, eliminated the 7640 GetFirmwareWakingVector 7641 interface, as it served no purpose (only the firmware reads the vector, 7642 OS 7643 only writes the vector.) ACPICA BZ 731. 7644 7645 Implemented a mechanism to escape infinite AML While() loops. Added a 7646 loop 7647 counter to force exit from AML While loops if the count becomes too 7648 large. 7649 This can occur in poorly written AML when the hardware does not respond 7650 within a while loop and the loop does not implement a timeout. The 7651 maximum 7652 loop count is configurable. A new exception code is returned when a loop 7653 is 7654 broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore. 7655 7656 Optimized the execution of AML While loops. Previously, a control state 7657 object was allocated and freed for each execution of the loop. The 7658 optimization is to simply reuse the control state for each iteration. 7659 This 7660 speeds up the raw loop execution time by about 5%. 7661 7662 Enhanced the implicit return mechanism. For Windows compatibility, return 7663 an 7664 implicit integer of value zero for methods that contain no executable 7665 code. 7666 Such methods are seen in the field as stubs (presumably), and can cause 7667 drivers to fail if they expect a return value. Lin Ming. 7668 7669 Allow multiple backslashes as root prefixes in namepaths. In a fully 7670 qualified namepath, allow multiple backslash prefixes. This can happen 7671 (and 7672 is seen in the field) because of the use of a double-backslash in strings 7673 (since backslash is the escape character) causing confusion. ACPICA BZ 7674 739 7675 Lin Ming. 7676 7677 Emit a warning if two different FACS or DSDT tables are discovered in the 7678 FADT. Checks if there are two valid but different addresses for the FACS 7679 and 7680 DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.) 7681 7682 Consolidated the method argument count validation code. Merged the code 7683 that 7684 validates control method argument counts into the predefined validation 7685 module. Eliminates possible multiple warnings for incorrect argument 7686 counts. 7687 7688 Implemented ACPICA example code. Includes code for ACPICA initialization, 7689 handler installation, and calling a control method. Available at 7690 source/tools/examples. 7691 7692 Added a global pointer for FACS table to simplify internal FACS access. 7693 Use 7694 the global pointer instead of using AcpiGetTableByIndex for each FACS 7695 access. 7696 This simplifies the code for the Global Lock and the Firmware Waking 7697 Vector(s). 7698 7699 Example Code and Data Size: These are the sizes for the OS-independent 7700 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7701 debug version of the code includes the debug output trace mechanism and 7702 has a 7703 much larger code and data size. 7704 7705 Previous Release: 7706 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 7707 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 7708 Current Release: 7709 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 7710 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 7711 7712 2) iASL Compiler/Disassembler and Tools: 7713 7714 iASL: Improved disassembly of external method calls. Added the -e option 7715 to 7716 allow the inclusion of additional ACPI tables to help with the 7717 disassembly 7718 of 7719 method invocations and the generation of external declarations during the 7720 disassembly. Certain external method invocations cannot be disassembled 7721 properly without the actual declaration of the method. Use the -e option 7722 to 7723 include the table where the external method(s) are actually declared. 7724 Most 7725 useful for disassembling SSDTs that make method calls back to the master 7726 DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl 7727 -d 7728 -e dsdt.aml ssdt1.aml 7729 7730 iASL: Fix to allow references to aliases within ASL namepaths. Fixes a 7731 problem where the use of an alias within a namepath would result in a not 7732 found error or cause the compiler to fault. Also now allows forward 7733 references from the Alias operator itself. ACPICA BZ 738. 7734 7735 ---------------------------------------- 7736 26 September 2008. Summary of changes for version 20080926: 7737 7738 1) ACPI CA Core Subsystem: 7739 7740 Designed and implemented a mechanism to validate predefined ACPI methods 7741 and 7742 objects. This code validates the predefined ACPI objects (objects whose 7743 names 7744 start with underscore) that appear in the namespace, at the time they are 7745 evaluated. The argument count and the type of the returned object are 7746 validated against the ACPI specification. The purpose of this validation 7747 is 7748 to detect problems with the BIOS-implemented predefined ACPI objects 7749 before 7750 the results are returned to the ACPI-related drivers. Future enhancements 7751 may 7752 include actual repair of incorrect return objects where possible. Two new 7753 files are nspredef.c and acpredef.h. 7754 7755 Fixed a fault in the AML parser if a memory allocation fails during the 7756 Op 7757 completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492. 7758 7759 Fixed an issue with implicit return compatibility. This change improves 7760 the 7761 implicit return mechanism to be more compatible with the MS interpreter. 7762 Lin 7763 Ming, ACPICA BZ 349. 7764 7765 Implemented support for zero-length buffer-to-string conversions. Allow 7766 zero 7767 length strings during interpreter buffer-to-string conversions. For 7768 example, 7769 during the ToDecimalString and ToHexString operators, as well as implicit 7770 conversions. Fiodor Suietov, ACPICA BZ 585. 7771 7772 Fixed two possible memory leaks in the error exit paths of 7773 AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions 7774 are 7775 similar in that they use a stack of state objects in order to eliminate 7776 recursion. The stack must be fully unwound and deallocated if an error 7777 occurs. Lin Ming. ACPICA BZ 383. 7778 7779 Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the 7780 global 7781 ACPI register table. This bit does not exist and is unused. Lin Ming, Bob 7782 Moore ACPICA BZ 442. 7783 7784 Removed the obsolete version number in module headers. Removed the 7785 "$Revision" number that appeared in each module header. This version 7786 number 7787 was useful under SourceSafe and CVS, but has no meaning under git. It is 7788 not 7789 only incorrect, it could also be misleading. 7790 7791 Example Code and Data Size: These are the sizes for the OS-independent 7792 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7793 debug version of the code includes the debug output trace mechanism and 7794 has a 7795 much larger code and data size. 7796 7797 Previous Release: 7798 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 7799 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 7800 Current Release: 7801 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 7802 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 7803 7804 ---------------------------------------- 7805 29 August 2008. Summary of changes for version 20080829: 7806 7807 1) ACPI CA Core Subsystem: 7808 7809 Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type 7810 Reference. Changes include the elimination of cheating on the Object 7811 field 7812 for the DdbHandle subtype, addition of a reference class field to 7813 differentiate the various reference types (instead of an AML opcode), and 7814 the 7815 cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723 7816 7817 Reduce an error to a warning for an incorrect method argument count. 7818 Previously aborted with an error if too few arguments were passed to a 7819 control method via the external ACPICA interface. Now issue a warning 7820 instead 7821 and continue. Handles the case where the method inadvertently declares 7822 too 7823 many arguments, but does not actually use the extra ones. Applies mainly 7824 to 7825 the predefined methods. Lin Ming. Linux BZ 11032. 7826 7827 Disallow the evaluation of named object types with no intrinsic value. 7828 Return 7829 AE_TYPE for objects that have no value and therefore evaluation is 7830 undefined: 7831 Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation 7832 of 7833 these types were allowed, but an exception would be generated at some 7834 point 7835 during the evaluation. Now, the error is generated up front. 7836 7837 Fixed a possible memory leak in the AcpiNsGetExternalPathname function 7838 (nsnames.c). Fixes a leak in the error exit path. 7839 7840 Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These 7841 debug 7842 levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and 7843 ACPI_EXCEPTION 7844 interfaces. Also added ACPI_DB_EVENTS to correspond with the existing 7845 ACPI_LV_EVENTS. 7846 7847 Removed obsolete and/or unused exception codes from the acexcep.h header. 7848 There is the possibility that certain device drivers may be affected if 7849 they 7850 use any of these exceptions. 7851 7852 The ACPICA documentation has been added to the public git source tree, 7853 under 7854 acpica/documents. Included are the ACPICA programmer reference, the iASL 7855 compiler reference, and the changes.txt release logfile. 7856 7857 Example Code and Data Size: These are the sizes for the OS-independent 7858 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7859 debug version of the code includes the debug output trace mechanism and 7860 has a 7861 much larger code and data size. 7862 7863 Previous Release: 7864 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 7865 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 7866 Current Release: 7867 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 7868 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 7869 7870 2) iASL Compiler/Disassembler and Tools: 7871 7872 Allow multiple argument counts for the predefined _SCP method. ACPI 3.0 7873 defines _SCP with 3 arguments. Previous versions defined it with only 1 7874 argument. iASL now allows both definitions. 7875 7876 iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for 7877 zero- 7878 length subtables when disassembling ACPI tables. Also fixed a couple of 7879 errors where a full 16-bit table type field was not extracted from the 7880 input 7881 properly. 7882 7883 acpisrc: Improve comment counting mechanism for generating source code 7884 statistics. Count first and last lines of multi-line comments as 7885 whitespace, 7886 not comment lines. Handle Linux legal header in addition to standard 7887 acpica 7888 header. 7889 7890 ---------------------------------------- 7891 7892 29 July 2008. Summary of changes for version 20080729: 7893 7894 1) ACPI CA Core Subsystem: 7895 7896 Fix a possible deadlock in the GPE dispatch. Remove call to 7897 AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will 7898 attempt 7899 to acquire the GPE lock but can deadlock since the GPE lock is already 7900 held 7901 at dispatch time. This code was introduced in version 20060831 as a 7902 response 7903 to Linux BZ 6881 and has since been removed from Linux. 7904 7905 Add a function to dereference returned reference objects. Examines the 7906 return 7907 object from a call to AcpiEvaluateObject. Any Index or RefOf references 7908 are 7909 automatically dereferenced in an attempt to return something useful 7910 (these 7911 reference types cannot be converted into an external ACPI_OBJECT.) 7912 Provides 7913 MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105 7914 7915 x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new 7916 subtables for the MADT and one new subtable for the SRAT. Includes 7917 disassembler and AcpiSrc support. Data from the Intel 64 Architecture 7918 x2APIC 7919 Specification, June 2008. 7920 7921 Additional error checking for pathname utilities. Add error check after 7922 all 7923 calls to AcpiNsGetPathnameLength. Add status return from 7924 AcpiNsBuildExternalPath and check after all calls. Add parameter 7925 validation 7926 to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar. 7927 7928 Return status from the global init function AcpiUtGlobalInitialize. This 7929 is 7930 used by both the kernel subsystem and the utilities such as iASL 7931 compiler. 7932 The function could possibly fail when the caches are initialized. Yang 7933 Yi. 7934 7935 Add a function to decode reference object types to strings. Created for 7936 improved error messages. 7937 7938 Improve object conversion error messages. Better error messages during 7939 object 7940 conversion from internal to the external ACPI_OBJECT. Used for external 7941 calls 7942 to AcpiEvaluateObject. 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: 79.6K Code, 16.2K Data, 95.8K Total 7952 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 7953 Current Release: 7954 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 7955 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 7956 7957 2) iASL Compiler/Disassembler and Tools: 7958 7959 Debugger: fix a possible hang when evaluating non-methods. Fixes a 7960 problem 7961 introduced in version 20080701. If the object being evaluated (via 7962 execute 7963 command) is not a method, the debugger can hang while trying to obtain 7964 non- 7965 existent parameters. 7966 7967 iASL: relax error for using reserved "_T_x" identifiers. These names can 7968 appear in a disassembled ASL file if they were emitted by the original 7969 compiler. Instead of issuing an error or warning and forcing the user to 7970 manually change these names, issue a remark instead. 7971 7972 iASL: error if named object created in while loop. Emit an error if any 7973 named 7974 object is created within a While loop. If allowed, this code will 7975 generate 7976 a 7977 run-time error on the second iteration of the loop when an attempt is 7978 made 7979 to 7980 create the same named object twice. ACPICA bugzilla 730. 7981 7982 iASL: Support absolute pathnames for include files. Add support for 7983 absolute 7984 pathnames within the Include operator. previously, only relative 7985 pathnames 7986 were supported. 7987 7988 iASL: Enforce minimum 1 interrupt in interrupt macro and Resource 7989 Descriptor. 7990 The ACPI spec requires one interrupt minimum. BZ 423 7991 7992 iASL: Handle a missing ResourceSource arg, with a present SourceIndex. 7993 Handles the case for the Interrupt Resource Descriptor where 7994 the ResourceSource argument is omitted but ResourceSourceIndex 7995 is present. Now leave room for the Index. BZ 426 7996 7997 iASL: Prevent error message if CondRefOf target does not exist. Fixes 7998 cases 7999 where an error message is emitted if the target does not exist. BZ 516 8000 8001 iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option 8002 (get ACPI tables on Windows). This was apparently broken in version 8003 20070919. 8004 8005 AcpiXtract: Handle EOF while extracting data. Correctly handle the case 8006 where 8007 the EOF happens immediately after the last table in the input file. Print 8008 completion message. Previously, no message was displayed in this case. 8009 8010 ---------------------------------------- 8011 01 July 2008. Summary of changes for version 20080701: 8012 8013 0) Git source tree / acpica.org 8014 8015 Fixed a problem where a git-clone from http would not transfer the entire 8016 source tree. 8017 8018 1) ACPI CA Core Subsystem: 8019 8020 Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one 8021 enable bit. Now performs a read-change-write of the enable register 8022 instead 8023 of simply writing out the cached enable mask. This will prevent 8024 inadvertent 8025 enabling of GPEs if a rogue GPE is received during initialization (before 8026 GPE 8027 handlers are installed.) 8028 8029 Implemented a copy for dynamically loaded tables. Previously, dynamically 8030 loaded tables were simply mapped - but on some machines this memory is 8031 corrupted after suspend. Now copy the table to a local buffer. For the 8032 OpRegion case, added checksum verify. Use the table length from the table 8033 header, not the region length. For the Buffer case, use the table length 8034 also. Dennis Noordsij, Bob Moore. BZ 10734 8035 8036 Fixed a problem where the same ACPI table could not be dynamically loaded 8037 and 8038 unloaded more than once. Without this change, a table cannot be loaded 8039 again 8040 once it has been loaded/unloaded one time. The current mechanism does not 8041 unregister a table upon an unload. During a load, if the same table is 8042 found, 8043 this no longer returns an exception. BZ 722 8044 8045 Fixed a problem where the wrong descriptor length was calculated for the 8046 EndTag descriptor in 64-bit mode. The "minimal" descriptors such as 8047 EndTag 8048 are calculated as 12 bytes long, but the actual length in the internal 8049 descriptor is 16 because of the round-up to 8 on the 64-bit build. 8050 Reported 8051 by Linn Crosetto. BZ 728 8052 8053 Fixed a possible memory leak in the Unload operator. The DdbHandle 8054 returned 8055 by Load() did not have its reference count decremented during unload, 8056 leading 8057 to a memory leak. Lin Ming. BZ 727 8058 8059 Fixed a possible memory leak when deleting thermal/processor objects. Any 8060 associated notify handlers (and objects) were not being deleted. Fiodor 8061 Suietov. BZ 506 8062 8063 Fixed the ordering of the ASCII names in the global mutex table to match 8064 the 8065 actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug 8066 only. 8067 Vegard Nossum. BZ 726 8068 8069 Enhanced the AcpiGetObjectInfo interface to return the number of required 8070 arguments if the object is a control method. Added this call to the 8071 debugger 8072 so the proper number of default arguments are passed to a method. This 8073 prevents a warning when executing methods from AcpiExec. 8074 8075 Added a check for an invalid handle in AcpiGetObjectInfo. Return 8076 AE_BAD_PARAMETER if input handle is invalid. BZ 474 8077 8078 Fixed an extraneous warning from exconfig.c on the 64-bit build. 8079 8080 Example Code and Data Size: These are the sizes for the OS-independent 8081 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8082 debug version of the code includes the debug output trace mechanism and 8083 has a 8084 much larger code and data size. 8085 8086 Previous Release: 8087 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 8088 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 8089 Current Release: 8090 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 8091 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 8092 8093 2) iASL Compiler/Disassembler and Tools: 8094 8095 iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both 8096 resource descriptor names. 8097 8098 iASL: Detect invalid ASCII characters in input (windows version). Removed 8099 the 8100 "-CF" flag from the flex compile, enables correct detection of non-ASCII 8101 characters in the input. BZ 441 8102 8103 iASL: Eliminate warning when result of LoadTable is not used. Eliminate 8104 the 8105 "result of operation not used" warning when the DDB handle returned from 8106 LoadTable is not used. The warning is not needed. BZ 590 8107 8108 AcpiExec: Add support for dynamic table load/unload. Now calls _CFG 8109 method 8110 to 8111 pass address of table to the AML. Added option to disable OpRegion 8112 simulation 8113 to allow creation of an OpRegion with a real address that was passed to 8114 _CFG. 8115 All of this allows testing of the Load and Unload operators from 8116 AcpiExec. 8117 8118 Debugger: update tables command for unloaded tables. Handle unloaded 8119 tables 8120 and use the standard table header output routine. 8121 8122 ---------------------------------------- 8123 09 June 2008. Summary of changes for version 20080609: 8124 8125 1) ACPI CA Core Subsystem: 8126 8127 Implemented a workaround for reversed _PRT entries. A significant number 8128 of 8129 BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This 8130 change dynamically detects and repairs this problem. Provides 8131 compatibility 8132 with MS ACPI. BZ 6859 8133 8134 Simplified the internal ACPI hardware interfaces to eliminate the locking 8135 flag parameter from Register Read/Write. Added a new external interface, 8136 AcpiGetRegisterUnlocked. 8137 8138 Fixed a problem where the invocation of a GPE control method could hang. 8139 This 8140 was a regression introduced in 20080514. The new method argument count 8141 validation mechanism can enter an infinite loop when a GPE method is 8142 dispatched. Problem fixed by removing the obsolete code that passed GPE 8143 block 8144 information to the notify handler via the control method parameter 8145 pointer. 8146 8147 Fixed a problem where the _SST execution status was incorrectly returned 8148 to 8149 the caller of AcpiEnterSleepStatePrep. This was a regression introduced 8150 in 8151 20080514. _SST is optional and a NOT_FOUND exception should never be 8152 returned. BZ 716 8153 8154 Fixed a problem where a deleted object could be accessed from within the 8155 AML 8156 parser. This was a regression introduced in version 20080123 as a fix for 8157 the 8158 Unload operator. Lin Ming. BZ 10669 8159 8160 Cleaned up the debug operand dump mechanism. Eliminated unnecessary 8161 operands 8162 and eliminated the use of a negative index in a loop. Operands are now 8163 displayed in the correct order, not backwards. This also fixes a 8164 regression 8165 introduced in 20080514 on 64-bit systems where the elimination of 8166 ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ 8167 715 8168 8169 Fixed a possible memory leak in EvPciConfigRegionSetup where the error 8170 exit 8171 path did not delete a locally allocated structure. 8172 8173 Updated definitions for the DMAR and SRAT tables to synchronize with the 8174 current specifications. Includes disassembler support. 8175 8176 Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect 8177 loop termination value was used. Loop terminated on iteration early, 8178 missing 8179 one mutex. Linn Crosetto 8180 8181 Example Code and Data Size: These are the sizes for the OS-independent 8182 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8183 debug version of the code includes the debug output trace mechanism and 8184 has a 8185 much larger code and data size. 8186 8187 Previous Release: 8188 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 8189 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 8190 Current Release: 8191 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 8192 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 8193 8194 2) iASL Compiler/Disassembler and Tools: 8195 8196 Disassembler: Implemented support for EisaId() within _CID objects. Now 8197 disassemble integer _CID objects back to EisaId invocations, including 8198 multiple integers within _CID packages. Includes single-step support for 8199 debugger also. 8200 8201 Disassembler: Added support for DMAR and SRAT table definition changes. 8202 8203 ---------------------------------------- 8204 14 May 2008. Summary of changes for version 20080514: 8205 8206 1) ACPI CA Core Subsystem: 8207 8208 Fixed a problem where GPEs were enabled too early during the ACPICA 8209 initialization. This could lead to "handler not installed" errors on some 8210 machines. Moved GPE enable until after _REG/_STA/_INI methods are run. 8211 This 8212 ensures that all operation regions and devices throughout the namespace 8213 have 8214 been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916. 8215 8216 Implemented a change to the enter sleep code. Moved execution of the _GTS 8217 method to just before setting sleep enable bit. The execution was moved 8218 from 8219 AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed 8220 immediately before the SLP_EN bit is set, as per the ACPI specification. 8221 Luming Yu, BZ 1653. 8222 8223 Implemented a fix to disable unknown GPEs (2nd version). Now always 8224 disable 8225 the GPE, even if ACPICA thinks that that it is already disabled. It is 8226 possible that the AML or some other code has enabled the GPE unbeknownst 8227 to 8228 the ACPICA code. 8229 8230 Fixed a problem with the Field operator where zero-length fields would 8231 return 8232 an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length 8233 ASL 8234 field declarations in Field(), BankField(), and IndexField(). BZ 10606. 8235 8236 Implemented a fix for the Load operator, now load the table at the 8237 namespace 8238 root. This reverts a change introduced in version 20071019. The table is 8239 now 8240 loaded at the namespace root even though this goes against the ACPI 8241 specification. This provides compatibility with other ACPI 8242 implementations. 8243 The ACPI specification will be updated to reflect this in ACPI 4.0. Lin 8244 Ming. 8245 8246 Fixed a problem where ACPICA would not Load() tables with unusual 8247 signatures. 8248 Now ignore ACPI table signature for Load() operator. Only "SSDT" is 8249 acceptable to the ACPI spec, but tables are seen with OEMx and null sigs. 8250 Therefore, signature validation is worthless. Apparently MS ACPI accepts 8251 such 8252 signatures, ACPICA must be compatible. BZ 10454. 8253 8254 Fixed a possible negative array index in AcpiUtValidateException. Added 8255 NULL 8256 fields to the exception string arrays to eliminate a -1 subtraction on 8257 the 8258 SubStatus field. 8259 8260 Updated the debug tracking macros to reduce overall code and data size. 8261 Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings 8262 instead of pointers to static strings. Jan Beulich and Bob Moore. 8263 8264 Implemented argument count checking in control method invocation via 8265 AcpiEvaluateObject. Now emit an error if too few arguments, warning if 8266 too 8267 many. This applies only to extern programmatic control method execution, 8268 not 8269 method-to-method calls within the AML. Lin Ming. 8270 8271 Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is 8272 no 8273 longer needed, especially with the removal of 16-bit support. It was 8274 replaced 8275 mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64 8276 bit 8277 on 8278 32/64-bit platforms is required. 8279 8280 Added the C const qualifier for appropriate string constants -- mostly 8281 MODULE_NAME and printf format strings. Jan Beulich. 8282 8283 Example Code and Data Size: These are the sizes for the OS-independent 8284 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8285 debug version of the code includes the debug output trace mechanism and 8286 has a 8287 much larger code and data size. 8288 8289 Previous Release: 8290 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 8291 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 8292 Current Release: 8293 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 8294 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 8295 8296 2) iASL Compiler/Disassembler and Tools: 8297 8298 Implemented ACPI table revision ID validation in the disassembler. Zero 8299 is 8300 always invalid. For DSDTs, the ID controls the interpreter integer width. 8301 1 8302 means 32-bit and this is unusual. 2 or greater is 64-bit. 8303 8304 ---------------------------------------- 8305 21 March 2008. Summary of changes for version 20080321: 8306 8307 1) ACPI CA Core Subsystem: 8308 8309 Implemented an additional change to the GPE support in order to suppress 8310 spurious or stray GPEs. The AcpiEvDisableGpe function will now 8311 permanently 8312 disable incoming GPEs that are neither enabled nor disabled -- meaning 8313 that 8314 the GPE is unknown to the system. This should prevent future interrupt 8315 floods 8316 from that GPE. BZ 6217 (Zhang Rui) 8317 8318 Fixed a problem where NULL package elements were not returned to the 8319 AcpiEvaluateObject interface correctly. The element was simply ignored 8320 instead of returning a NULL ACPI_OBJECT package element, potentially 8321 causing 8322 a buffer overflow and/or confusing the caller who expected a fixed number 8323 of 8324 elements. BZ 10132 (Lin Ming, Bob Moore) 8325 8326 Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word, 8327 Dword, 8328 Qword), Field, BankField, and IndexField operators when invoked from 8329 inside 8330 an executing control method. In this case, these operators created 8331 namespace 8332 nodes that were incorrectly left marked as permanent nodes instead of 8333 temporary nodes. This could cause a problem if there is race condition 8334 between an exiting control method and a running namespace walk. (Reported 8335 by 8336 Linn Crosetto) 8337 8338 Fixed a problem where the CreateField and CreateXXXField operators would 8339 incorrectly allow duplicate names (the name of the field) with no 8340 exception 8341 generated. 8342 8343 Implemented several changes for Notify handling. Added support for new 8344 Notify 8345 values (ACPI 2.0+) and improved the Notify debug output. Notify on 8346 PowerResource objects is no longer allowed, as per the ACPI 8347 specification. 8348 (Bob Moore, Zhang Rui) 8349 8350 All Reference Objects returned via the AcpiEvaluateObject interface are 8351 now 8352 marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved 8353 for 8354 NULL objects - either NULL package elements or unresolved named 8355 references. 8356 8357 Fixed a problem where an extraneous debug message was produced for 8358 package 8359 objects (when debugging enabled). The message "Package List length larger 8360 than NumElements count" is now produced in the correct case, and is now 8361 an 8362 error message rather than a debug message. Added a debug message for the 8363 opposite case, where NumElements is larger than the Package List (the 8364 package 8365 will be padded out with NULL elements as per the ACPI spec.) 8366 8367 Implemented several improvements for the output of the ASL "Debug" object 8368 to 8369 clarify and keep all data for a given object on one output line. 8370 8371 Fixed two size calculation issues with the variable-length Start 8372 Dependent 8373 resource descriptor. 8374 8375 Example Code and Data Size: These are the sizes for the OS-independent 8376 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8377 debug version of the code includes the debug output trace mechanism and 8378 has 8379 a much larger code and data size. 8380 8381 Previous Release: 8382 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 8383 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 8384 Current Release: 8385 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 8386 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 8387 8388 2) iASL Compiler/Disassembler and Tools: 8389 8390 Fixed a problem with the use of the Switch operator where execution of 8391 the 8392 containing method by multiple concurrent threads could cause an 8393 AE_ALREADY_EXISTS exception. This is caused by the fact that there is no 8394 actual Switch opcode, it must be simulated with local named temporary 8395 variables and if/else pairs. The solution chosen was to mark any method 8396 that 8397 uses Switch as Serialized, thus preventing multiple thread entries. BZ 8398 469. 8399 8400 ---------------------------------------- 8401 13 February 2008. Summary of changes for version 20080213: 8402 8403 1) ACPI CA Core Subsystem: 8404 8405 Implemented another MS compatibility design change for GPE/Notify 8406 handling. 8407 GPEs are now cleared/enabled asynchronously to allow all pending notifies 8408 to 8409 complete first. It is expected that the OSL will queue the enable request 8410 behind all pending notify requests (may require changes to the local host 8411 OSL 8412 in AcpiOsExecute). Alexey Starikovskiy. 8413 8414 Fixed a problem where buffer and package objects passed as arguments to a 8415 control method via the external AcpiEvaluateObject interface could cause 8416 an 8417 AE_AML_INTERNAL exception depending on the order and type of operators 8418 executed by the target control method. 8419 8420 Fixed a problem where resource descriptor size optimization could cause a 8421 problem when a _CRS resource template is passed to a _SRS method. The 8422 _SRS 8423 resource template must use the same descriptors (with the same size) as 8424 returned from _CRS. This change affects the following resource 8425 descriptors: 8426 IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ 8427 9487) 8428 8429 Fixed a problem where a CopyObject to RegionField, BankField, and 8430 IndexField 8431 objects did not perform an implicit conversion as it should. These types 8432 must 8433 retain their initial type permanently as per the ACPI specification. 8434 However, 8435 a CopyObject to all other object types should not perform an implicit 8436 conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388 8437 8438 Fixed a problem with the AcpiGetDevices interface where the mechanism to 8439 match device CIDs did not examine the entire list of available CIDs, but 8440 instead aborted on the first non-matching CID. Andrew Patterson. 8441 8442 Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro 8443 was 8444 inadvertently changed to return a 16-bit value instead of a 32-bit value, 8445 truncating the upper dword of a 64-bit value. This macro is only used to 8446 display debug output, so no incorrect calculations were made. Also, 8447 reimplemented the macro so that a 64-bit shift is not performed by 8448 inefficient compilers. 8449 8450 Added missing va_end statements that should correspond with each va_start 8451 statement. 8452 8453 Example Code and Data Size: These are the sizes for the OS-independent 8454 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8455 debug version of the code includes the debug output trace mechanism and 8456 has 8457 a much larger code and data size. 8458 8459 Previous Release: 8460 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 8461 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 8462 Current Release: 8463 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 8464 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 8465 8466 2) iASL Compiler/Disassembler and Tools: 8467 8468 Implemented full disassembler support for the following new ACPI tables: 8469 BERT, EINJ, and ERST. Implemented partial disassembler support for the 8470 complicated HEST table. These tables support the Windows Hardware Error 8471 Architecture (WHEA). 8472 8473 ---------------------------------------- 8474 23 January 2008. Summary of changes for version 20080123: 8475 8476 1) ACPI CA Core Subsystem: 8477 8478 Added the 2008 copyright to all module headers and signons. This affects 8479 virtually every file in the ACPICA core subsystem, the iASL compiler, and 8480 the tools/utilities. 8481 8482 Fixed a problem with the SizeOf operator when used with Package and 8483 Buffer 8484 objects. These objects have deferred execution for some arguments, and 8485 the 8486 execution is now completed before the SizeOf is executed. This problem 8487 caused 8488 unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore) 8489 BZ 8490 9558 8491 8492 Implemented an enhancement to the interpreter "slack mode". In the 8493 absence 8494 of 8495 an explicit return or an implicitly returned object from the last 8496 executed 8497 opcode, a control method will now implicitly return an integer of value 0 8498 for 8499 Microsoft compatibility. (Lin Ming) BZ 392 8500 8501 Fixed a problem with the Load operator where an exception was not 8502 returned 8503 in 8504 the case where the table is already loaded. (Lin Ming) BZ 463 8505 8506 Implemented support for the use of DDBHandles as an Indexed Reference, as 8507 per 8508 the ACPI spec. (Lin Ming) BZ 486 8509 8510 Implemented support for UserTerm (Method invocation) for the Unload 8511 operator 8512 as per the ACPI spec. (Lin Ming) BZ 580 8513 8514 Fixed a problem with the LoadTable operator where the OemId and 8515 OemTableId 8516 input strings could cause unexpected failures if they were shorter than 8517 the 8518 maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576 8519 8520 Implemented support for UserTerm (Method invocation) for the Unload 8521 operator 8522 as per the ACPI spec. (Lin Ming) BZ 580 8523 8524 Implemented header file support for new ACPI tables - BERT, ERST, EINJ, 8525 HEST, 8526 IBFT, UEFI, WDAT. Disassembler support is forthcoming. 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: 79.3K Code, 17.2K Data, 96.5K Total 8536 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 8537 Current Release: 8538 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 8539 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 8540 8541 2) iASL Compiler/Disassembler and Tools: 8542 8543 Implemented support in the disassembler for checksum validation on 8544 incoming 8545 binary DSDTs and SSDTs. If incorrect, a message is displayed within the 8546 table 8547 header dump at the start of the disassembly. 8548 8549 Implemented additional debugging information in the namespace listing 8550 file 8551 created during compilation. In addition to the namespace hierarchy, the 8552 full 8553 pathname to each namespace object is displayed. 8554 8555 Fixed a problem with the disassembler where invalid ACPI tables could 8556 cause 8557 faults or infinite loops. 8558 8559 Fixed an unexpected parse error when using the optional "parameter types" 8560 list in a control method declaration. (Lin Ming) BZ 397 8561 8562 Fixed a problem where two External declarations with the same name did 8563 not 8564 cause an error (Lin Ming) BZ 509 8565 8566 Implemented support for full TermArgs (adding Argx, Localx and method 8567 invocation) for the ParameterData parameter to the LoadTable operator. 8568 (Lin 8569 Ming) BZ 583,587 8570 8571 ---------------------------------------- 8572 19 December 2007. Summary of changes for version 20071219: 8573 8574 1) ACPI CA Core Subsystem: 8575 8576 Implemented full support for deferred execution for the TermArg string 8577 arguments for DataTableRegion. This enables forward references and full 8578 operand resolution for the three string arguments. Similar to 8579 OperationRegion 8580 deferred argument execution.) Lin Ming. BZ 430 8581 8582 Implemented full argument resolution support for the BankValue argument 8583 to 8584 BankField. Previously, only constants were supported, now any TermArg may 8585 be 8586 used. Lin Ming BZ 387, 393 8587 8588 Fixed a problem with AcpiGetDevices where the search of a branch of the 8589 device tree could be terminated prematurely. In accordance with the ACPI 8590 specification, the search down the current branch is terminated if a 8591 device 8592 is both not present and not functional (instead of just not present.) 8593 Yakui 8594 Zhao. 8595 8596 Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly 8597 if 8598 the underlying AML code changed the GPE enable registers. Now, any 8599 unknown 8600 incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately 8601 disabled 8602 instead of simply ignored. Rui Zhang. 8603 8604 Fixed a problem with Index Fields where the Index register was 8605 incorrectly 8606 limited to a maximum of 32 bits. Now any size may be used. 8607 8608 Fixed a couple memory leaks associated with "implicit return" objects 8609 when 8610 the AML Interpreter slack mode is enabled. Lin Ming BZ 349 8611 8612 Example Code and Data Size: These are the sizes for the OS-independent 8613 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8614 debug version of the code includes the debug output trace mechanism and 8615 has 8616 a much larger code and data size. 8617 8618 Previous Release: 8619 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 8620 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 8621 Current Release: 8622 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 8623 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 8624 8625 ---------------------------------------- 8626 14 November 2007. Summary of changes for version 20071114: 8627 8628 1) ACPI CA Core Subsystem: 8629 8630 Implemented event counters for each of the Fixed Events, the ACPI SCI 8631 (interrupt) itself, and control methods executed. Named 8632 AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively. 8633 These 8634 should be useful for debugging and statistics. 8635 8636 Implemented a new external interface, AcpiGetStatistics, to retrieve the 8637 contents of the various event counters. Returns the current values for 8638 AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and 8639 AcpiMethodCount. The interface can be expanded in the future if new 8640 counters 8641 are added. Device drivers should use this interface rather than access 8642 the 8643 counters directly. 8644 8645 Fixed a problem with the FromBCD and ToBCD operators. With some 8646 compilers, 8647 the ShortDivide function worked incorrectly, causing problems with the 8648 BCD 8649 functions with large input values. A truncation from 64-bit to 32-bit 8650 inadvertently occurred. Internal BZ 435. Lin Ming 8651 8652 Fixed a problem with Index references passed as method arguments. 8653 References 8654 passed as arguments to control methods were dereferenced immediately 8655 (before 8656 control was passed to the called method). The references are now 8657 correctly 8658 passed directly to the called method. BZ 5389. Lin Ming 8659 8660 Fixed a problem with CopyObject used in conjunction with the Index 8661 operator. 8662 The reference was incorrectly dereferenced before the copy. The reference 8663 is 8664 now correctly copied. BZ 5391. Lin Ming 8665 8666 Fixed a problem with Control Method references within Package objects. 8667 These 8668 references are now correctly generated. This completes the package 8669 construction overhaul that began in version 20071019. 8670 8671 Example Code and Data Size: These are the sizes for the OS-independent 8672 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8673 debug version of the code includes the debug output trace mechanism and 8674 has 8675 a much larger code and data size. 8676 8677 Previous Release: 8678 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 8679 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 8680 Current Release: 8681 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 8682 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 8683 8684 8685 2) iASL Compiler/Disassembler and Tools: 8686 8687 The AcpiExec utility now installs handlers for all of the predefined 8688 Operation Region types. New types supported are: PCI_Config, CMOS, and 8689 PCIBARTarget. 8690 8691 Fixed a problem with the 64-bit version of AcpiExec where the extended 8692 (64- 8693 bit) address fields for the DSDT and FACS within the FADT were not being 8694 used, causing truncation of the upper 32-bits of these addresses. Lin 8695 Ming 8696 and Bob Moore 8697 8698 ---------------------------------------- 8699 19 October 2007. Summary of changes for version 20071019: 8700 8701 1) ACPI CA Core Subsystem: 8702 8703 Fixed a problem with the Alias operator when the target of the alias is a 8704 named ASL operator that opens a new scope -- Scope, Device, 8705 PowerResource, 8706 Processor, and ThermalZone. In these cases, any children of the original 8707 operator could not be accessed via the alias, potentially causing 8708 unexpected 8709 AE_NOT_FOUND exceptions. (BZ 9067) 8710 8711 Fixed a problem with the Package operator where all named references were 8712 created as object references and left otherwise unresolved. According to 8713 the 8714 ACPI specification, a Package can only contain Data Objects or references 8715 to 8716 control methods. The implication is that named references to Data Objects 8717 (Integer, Buffer, String, Package, BufferField, Field) should be resolved 8718 immediately upon package creation. This is the approach taken with this 8719 change. References to all other named objects (Methods, Devices, Scopes, 8720 etc.) are all now properly created as reference objects. (BZ 5328) 8721 8722 Reverted a change to Notify handling that was introduced in version 8723 20070508. This version changed the Notify handling from asynchronous to 8724 fully synchronous (Device driver Notify handling with respect to the 8725 Notify 8726 ASL operator). It was found that this change caused more problems than it 8727 solved and was removed by most users. 8728 8729 Fixed a problem with the Increment and Decrement operators where the type 8730 of 8731 the target object could be unexpectedly and incorrectly changed. (BZ 353) 8732 Lin Ming. 8733 8734 Fixed a problem with the Load and LoadTable operators where the table 8735 location within the namespace was ignored. Instead, the table was always 8736 loaded into the root or current scope. Lin Ming. 8737 8738 Fixed a problem with the Load operator when loading a table from a buffer 8739 object. The input buffer was prematurely zeroed and/or deleted. (BZ 577) 8740 8741 Fixed a problem with the Debug object where a store of a DdbHandle 8742 reference 8743 object to the Debug object could cause a fault. 8744 8745 Added a table checksum verification for the Load operator, in the case 8746 where 8747 the load is from a buffer. (BZ 578). 8748 8749 Implemented additional parameter validation for the LoadTable operator. 8750 The 8751 length of the input strings SignatureString, OemIdString, and OemTableId 8752 are 8753 now checked for maximum lengths. (BZ 582) Lin Ming. 8754 8755 Example Code and Data Size: These are the sizes for the OS-independent 8756 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8757 debug version of the code includes the debug output trace mechanism and 8758 has 8759 a much larger code and data size. 8760 8761 Previous Release: 8762 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 8763 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 8764 Current Release: 8765 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 8766 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 8767 8768 8769 2) iASL Compiler/Disassembler: 8770 8771 Fixed a problem where if a single file was specified and the file did not 8772 exist, no error message was emitted. (Introduced with wildcard support in 8773 version 20070917.) 8774 8775 ---------------------------------------- 8776 19 September 2007. Summary of changes for version 20070919: 8777 8778 1) ACPI CA Core Subsystem: 8779 8780 Designed and implemented new external interfaces to install and remove 8781 handlers for ACPI table-related events. Current events that are defined 8782 are 8783 LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as 8784 they are dynamically loaded and unloaded. See AcpiInstallTableHandler and 8785 AcpiRemoveTableHandler. (Lin Ming and Bob Moore) 8786 8787 Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag 8788 (acpi_serialized option on Linux) could cause some systems to hang during 8789 initialization. (Bob Moore) BZ 8171 8790 8791 Fixed a problem where objects of certain types (Device, ThermalZone, 8792 Processor, PowerResource) can be not found if they are declared and 8793 referenced from within the same control method (Lin Ming) BZ 341 8794 8795 Example Code and Data Size: These are the sizes for the OS-independent 8796 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8797 debug version of the code includes the debug output trace mechanism and 8798 has 8799 a much larger code and data size. 8800 8801 Previous Release: 8802 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 8803 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 8804 Current Release: 8805 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 8806 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 8807 8808 8809 2) iASL Compiler/Disassembler: 8810 8811 Implemented support to allow multiple files to be compiled/disassembled 8812 in 8813 a 8814 single invocation. This includes command line wildcard support for both 8815 the 8816 Windows and Unix versions of the compiler. This feature simplifies the 8817 disassembly and compilation of multiple ACPI tables in a single 8818 directory. 8819 8820 ---------------------------------------- 8821 08 May 2007. Summary of changes for version 20070508: 8822 8823 1) ACPI CA Core Subsystem: 8824 8825 Implemented a Microsoft compatibility design change for the handling of 8826 the 8827 Notify AML operator. Previously, notify handlers were dispatched and 8828 executed completely asynchronously in a deferred thread. The new design 8829 still executes the notify handlers in a different thread, but the 8830 original 8831 thread that executed the Notify() now waits at a synchronization point 8832 for 8833 the notify handler to complete. Some machines depend on a synchronous 8834 Notify 8835 operator in order to operate correctly. 8836 8837 Implemented support to allow Package objects to be passed as method 8838 arguments to the external AcpiEvaluateObject interface. Previously, this 8839 would return the AE_NOT_IMPLEMENTED exception. This feature had not been 8840 implemented since there were no reserved control methods that required it 8841 until recently. 8842 8843 Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs 8844 that 8845 contained invalid non-zero values in reserved fields could cause later 8846 failures because these fields have meaning in later revisions of the 8847 FADT. 8848 For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The 8849 fields 8850 are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.) 8851 8852 Fixed a problem where the Global Lock handle was not properly updated if 8853 a 8854 thread that acquired the Global Lock via executing AML code then 8855 attempted 8856 to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by 8857 Joe 8858 Liu. 8859 8860 Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list 8861 could be corrupted if the interrupt being removed was at the head of the 8862 list. Reported by Linn Crosetto. 8863 8864 Example Code and Data Size: These are the sizes for the OS-independent 8865 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8866 debug version of the code includes the debug output trace mechanism and 8867 has 8868 a much larger code and data size. 8869 8870 Previous Release: 8871 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 8872 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 8873 Current Release: 8874 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 8875 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 8876 8877 ---------------------------------------- 8878 20 March 2007. Summary of changes for version 20070320: 8879 8880 1) ACPI CA Core Subsystem: 8881 8882 Implemented a change to the order of interpretation and evaluation of AML 8883 operand objects within the AML interpreter. The interpreter now evaluates 8884 operands in the order that they appear in the AML stream (and the 8885 corresponding ASL code), instead of in the reverse order (after the 8886 entire 8887 operand list has been parsed). The previous behavior caused several 8888 subtle 8889 incompatibilities with the Microsoft AML interpreter as well as being 8890 somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov. 8891 8892 Implemented a change to the ACPI Global Lock support. All interfaces to 8893 the 8894 global lock now allow the same thread to acquire the lock multiple times. 8895 This affects the AcpiAcquireGlobalLock external interface to the global 8896 lock 8897 as well as the internal use of the global lock to support AML fields -- a 8898 control method that is holding the global lock can now simultaneously 8899 access 8900 AML fields that require global lock protection. Previously, in both 8901 cases, 8902 this would have resulted in an AE_ALREADY_ACQUIRED exception. The change 8903 to 8904 AcpiAcquireGlobalLock is of special interest to drivers for the Embedded 8905 Controller. There is no change to the behavior of the AML Acquire 8906 operator, 8907 as this can already be used to acquire a mutex multiple times by the same 8908 thread. BZ 8066. With assistance from Alexey Starikovskiy. 8909 8910 Fixed a problem where invalid objects could be referenced in the AML 8911 Interpreter after error conditions. During operand evaluation, ensure 8912 that 8913 the internal "Return Object" field is cleared on error and only valid 8914 pointers are stored there. Caused occasional access to deleted objects 8915 that 8916 resulted in "large reference count" warning messages. Valery Podrezov. 8917 8918 Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur 8919 on 8920 deeply nested control method invocations. BZ 7873, local BZ 487. Valery 8921 Podrezov. 8922 8923 Fixed an internal problem with the handling of result objects on the 8924 interpreter result stack. BZ 7872. Valery Podrezov. 8925 8926 Removed obsolete code that handled the case where AML_NAME_OP is the 8927 target 8928 of a reference (Reference.Opcode). This code was no longer necessary. BZ 8929 7874. Valery Podrezov. 8930 8931 Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This 8932 was 8933 a 8934 remnant from the previously discontinued 16-bit support. 8935 8936 Example Code and Data Size: These are the sizes for the OS-independent 8937 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8938 debug version of the code includes the debug output trace mechanism and 8939 has 8940 a much larger code and data size. 8941 8942 Previous Release: 8943 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 8944 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 8945 Current Release: 8946 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 8947 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 8948 8949 ---------------------------------------- 8950 26 January 2007. Summary of changes for version 20070126: 8951 8952 1) ACPI CA Core Subsystem: 8953 8954 Added the 2007 copyright to all module headers and signons. This affects 8955 virtually every file in the ACPICA core subsystem, the iASL compiler, and 8956 the utilities. 8957 8958 Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable 8959 during a table load. A bad pointer was passed in the case where the DSDT 8960 is 8961 overridden, causing a fault in this case. 8962 8963 Example Code and Data Size: These are the sizes for the OS-independent 8964 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8965 debug version of the code includes the debug output trace mechanism and 8966 has 8967 a much larger code and data size. 8968 8969 Previous Release: 8970 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 8971 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 8972 Current Release: 8973 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 8974 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 8975 8976 ---------------------------------------- 8977 15 December 2006. Summary of changes for version 20061215: 8978 8979 1) ACPI CA Core Subsystem: 8980 8981 Support for 16-bit ACPICA has been completely removed since it is no 8982 longer 8983 necessary and it clutters the code. All 16-bit macros, types, and 8984 conditional compiles have been removed, cleaning up and simplifying the 8985 code 8986 across the entire subsystem. DOS support is no longer needed since the 8987 bootable Linux firmware kit is now available. 8988 8989 The handler for the Global Lock is now removed during AcpiTerminate to 8990 enable a clean subsystem restart, via the implementation of the 8991 AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz, 8992 HP) 8993 8994 Implemented enhancements to the multithreading support within the 8995 debugger 8996 to enable improved multithreading debugging and evaluation of the 8997 subsystem. 8998 (Valery Podrezov) 8999 9000 Debugger: Enhanced the Statistics/Memory command to emit the total 9001 (maximum) 9002 memory used during the execution, as well as the maximum memory consumed 9003 by 9004 each of the various object types. (Valery Podrezov) 9005 9006 Example Code and Data Size: These are the sizes for the OS-independent 9007 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9008 debug version of the code includes the debug output trace mechanism and 9009 has 9010 a much larger code and data size. 9011 9012 Previous Release: 9013 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 9014 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 9015 Current Release: 9016 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 9017 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 9018 9019 9020 2) iASL Compiler/Disassembler and Tools: 9021 9022 AcpiExec: Implemented a new option (-m) to display full memory use 9023 statistics upon subsystem/program termination. (Valery Podrezov) 9024 9025 ---------------------------------------- 9026 09 November 2006. Summary of changes for version 20061109: 9027 9028 1) ACPI CA Core Subsystem: 9029 9030 Optimized the Load ASL operator in the case where the source operand is 9031 an 9032 operation region. Simply map the operation region memory, instead of 9033 performing a bytewise read. (Region must be of type SystemMemory, see 9034 below.) 9035 9036 Fixed the Load ASL operator for the case where the source operand is a 9037 region field. A buffer object is also allowed as the source operand. BZ 9038 480 9039 9040 Fixed a problem where the Load ASL operator allowed the source operand to 9041 be 9042 an operation region of any type. It is now restricted to regions of type 9043 SystemMemory, as per the ACPI specification. BZ 481 9044 9045 Additional cleanup and optimizations for the new Table Manager code. 9046 9047 AcpiEnable will now fail if all of the required ACPI tables are not 9048 loaded 9049 (FADT, FACS, DSDT). BZ 477 9050 9051 Added #pragma pack(8/4) to acobject.h to ensure that the structures in 9052 this 9053 header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been 9054 manually optimized to be aligned and will not work if it is byte-packed. 9055 9056 Example Code and Data Size: These are the sizes for the OS-independent 9057 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9058 debug version of the code includes the debug output trace mechanism and 9059 has 9060 a much larger code and data size. 9061 9062 Previous Release: 9063 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 9064 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 9065 Current Release: 9066 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 9067 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 9068 9069 9070 2) iASL Compiler/Disassembler and Tools: 9071 9072 Fixed a problem where the presence of the _OSI predefined control method 9073 within complex expressions could cause an internal compiler error. 9074 9075 AcpiExec: Implemented full region support for multiple address spaces. 9076 SpaceId is now part of the REGION object. BZ 429 9077 9078 ---------------------------------------- 9079 11 October 2006. Summary of changes for version 20061011: 9080 9081 1) ACPI CA Core Subsystem: 9082 9083 Completed an AML interpreter performance enhancement for control method 9084 execution. Previously a 2-pass parse/execution, control methods are now 9085 completely parsed and executed in a single pass. This improves overall 9086 interpreter performance by ~25%, reduces code size, and reduces CPU stack 9087 use. (Valery Podrezov + interpreter changes in version 20051202 that 9088 eliminated namespace loading during the pass one parse.) 9089 9090 Implemented _CID support for PCI Root Bridge detection. If the _HID does 9091 not 9092 match the predefined PCI Root Bridge IDs, the _CID list (if present) is 9093 now 9094 obtained and also checked for an ID match. 9095 9096 Implemented additional support for the PCI _ADR execution: upsearch until 9097 a 9098 device scope is found before executing _ADR. This allows PCI_Config 9099 operation regions to be declared locally within control methods 9100 underneath 9101 PCI device objects. 9102 9103 Fixed a problem with a possible race condition between threads executing 9104 AcpiWalkNamespace and the AML interpreter. This condition was removed by 9105 modifying AcpiWalkNamespace to (by default) ignore all temporary 9106 namespace 9107 entries created during any concurrent control method execution. An 9108 additional namespace race condition is known to exist between 9109 AcpiWalkNamespace and the Load/Unload ASL operators and is still under 9110 investigation. 9111 9112 Restructured the AML ParseLoop function, breaking it into several 9113 subfunctions in order to reduce CPU stack use and improve 9114 maintainability. 9115 (Mikhail Kouzmich) 9116 9117 AcpiGetHandle: Fix for parameter validation to detect invalid 9118 combinations 9119 of prefix handle and pathname. BZ 478 9120 9121 Example Code and Data Size: These are the sizes for the OS-independent 9122 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9123 debug version of the code includes the debug output trace mechanism and 9124 has 9125 a much larger code and data size. 9126 9127 Previous Release: 9128 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 9129 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 9130 Current Release: 9131 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 9132 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 9133 9134 2) iASL Compiler/Disassembler and Tools: 9135 9136 Ported the -g option (get local ACPI tables) to the new ACPICA Table 9137 Manager 9138 to restore original behavior. 9139 9140 ---------------------------------------- 9141 27 September 2006. Summary of changes for version 20060927: 9142 9143 1) ACPI CA Core Subsystem: 9144 9145 Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister. 9146 These functions now use a spinlock for mutual exclusion and the interrupt 9147 level indication flag is not needed. 9148 9149 Fixed a problem with the Global Lock where the lock could appear to be 9150 obtained before it is actually obtained. The global lock semaphore was 9151 inadvertently created with one unit instead of zero units. (BZ 464) 9152 Fiodor 9153 Suietov. 9154 9155 Fixed a possible memory leak and fault in AcpiExResolveObjectToValue 9156 during 9157 a read from a buffer or region field. (BZ 458) Fiodor Suietov. 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, 17.1K Data, 95.0K Total 9167 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 9168 Current Release: 9169 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 9170 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 9171 9172 9173 2) iASL Compiler/Disassembler and Tools: 9174 9175 Fixed a compilation problem with the pre-defined Resource Descriptor 9176 field 9177 names where an "object does not exist" error could be incorrectly 9178 generated 9179 if the parent ResourceTemplate pathname places the template within a 9180 different namespace scope than the current scope. (BZ 7212) 9181 9182 Fixed a problem where the compiler could hang after syntax errors 9183 detected 9184 in an ElseIf construct. (BZ 453) 9185 9186 Fixed a problem with the AmlFilename parameter to the DefinitionBlock() 9187 operator. An incorrect output filename was produced when this parameter 9188 was 9189 a null string (""). Now, the original input filename is used as the AML 9190 output filename, with an ".aml" extension. 9191 9192 Implemented a generic batch command mode for the AcpiExec utility 9193 (execute 9194 any AML debugger command) (Valery Podrezov). 9195 9196 ---------------------------------------- 9197 12 September 2006. Summary of changes for version 20060912: 9198 9199 1) ACPI CA Core Subsystem: 9200 9201 Enhanced the implementation of the "serialized mode" of the interpreter 9202 (enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is 9203 specified, instead of creating a serialization semaphore per control 9204 method, 9205 the interpreter lock is simply no longer released before a blocking 9206 operation during control method execution. This effectively makes the AML 9207 Interpreter single-threaded. The overhead of a semaphore per-method is 9208 eliminated. 9209 9210 Fixed a regression where an error was no longer emitted if a control 9211 method 9212 attempts to create 2 objects of the same name. This once again returns 9213 AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism 9214 that 9215 will dynamically serialize the control method to possible prevent future 9216 errors. (BZ 440) 9217 9218 Integrated a fix for a problem with PCI Express HID detection in the PCI 9219 Config Space setup procedure. (BZ 7145) 9220 9221 Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the 9222 AcpiHwInitialize function - the FADT registers are now validated when the 9223 table is loaded. 9224 9225 Added two new warnings during FADT verification - 1) if the FADT is 9226 larger 9227 than the largest known FADT version, and 2) if there is a mismatch 9228 between 9229 a 9230 32-bit block address and the 64-bit X counterpart (when both are non- 9231 zero.) 9232 9233 Example Code and Data Size: These are the sizes for the OS-independent 9234 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9235 debug version of the code includes the debug output trace mechanism and 9236 has 9237 a much larger code and data size. 9238 9239 Previous Release: 9240 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 9241 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 9242 Current Release: 9243 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 9244 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 9245 9246 9247 2) iASL Compiler/Disassembler and Tools: 9248 9249 Fixed a problem with the implementation of the Switch() operator where 9250 the 9251 temporary variable was declared too close to the actual Switch, instead 9252 of 9253 at method level. This could cause a problem if the Switch() operator is 9254 within a while loop, causing an error on the second iteration. (BZ 460) 9255 9256 Disassembler - fix for error emitted for unknown type for target of scope 9257 operator. Now, ignore it and continue. 9258 9259 Disassembly of an FADT now verifies the input FADT and reports any errors 9260 found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs. 9261 9262 Disassembly of raw data buffers with byte initialization data now 9263 prefixes 9264 each output line with the current buffer offset. 9265 9266 Disassembly of ASF! table now includes all variable-length data fields at 9267 the end of some of the subtables. 9268 9269 The disassembler now emits a comment if a buffer appears to be a 9270 ResourceTemplate, but cannot be disassembled as such because the EndTag 9271 does 9272 not appear at the very end of the buffer. 9273 9274 AcpiExec - Added the "-t" command line option to enable the serialized 9275 mode 9276 of the AML interpreter. 9277 9278 ---------------------------------------- 9279 31 August 2006. Summary of changes for version 20060831: 9280 9281 1) ACPI CA Core Subsystem: 9282 9283 Miscellaneous fixes for the Table Manager: 9284 - Correctly initialize internal common FADT for all 64-bit "X" fields 9285 - Fixed a couple table mapping issues during table load 9286 - Fixed a couple alignment issues for IA64 9287 - Initialize input array to zero in AcpiInitializeTables 9288 - Additional parameter validation for AcpiGetTable, AcpiGetTableHeader, 9289 AcpiGetTableByIndex 9290 9291 Change for GPE support: when a "wake" GPE is received, all wake GPEs are 9292 now 9293 immediately disabled to prevent the waking GPE from firing again and to 9294 prevent other wake GPEs from interrupting the wake process. 9295 9296 Added the AcpiGpeCount global that tracks the number of processed GPEs, 9297 to 9298 be used for debugging systems with a large number of ACPI interrupts. 9299 9300 Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in 9301 both the ACPICA headers and the disassembler. 9302 9303 Example Code and Data Size: These are the sizes for the OS-independent 9304 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9305 debug version of the code includes the debug output trace mechanism and 9306 has 9307 a much larger code and data size. 9308 9309 Previous Release: 9310 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 9311 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 9312 Current Release: 9313 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 9314 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 9315 9316 9317 2) iASL Compiler/Disassembler and Tools: 9318 9319 Disassembler support for the DMAR ACPI table. 9320 9321 ---------------------------------------- 9322 23 August 2006. Summary of changes for version 20060823: 9323 9324 1) ACPI CA Core Subsystem: 9325 9326 The Table Manager component has been completely redesigned and 9327 reimplemented. The new design is much simpler, and reduces the overall 9328 code 9329 and data size of the kernel-resident ACPICA by approximately 5%. Also, it 9330 is 9331 now possible to obtain the ACPI tables very early during kernel 9332 initialization, even before dynamic memory management is initialized. 9333 (Alexey Starikovskiy, Fiodor Suietov, Bob Moore) 9334 9335 Obsolete ACPICA interfaces: 9336 9337 - AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel 9338 init 9339 time). 9340 - AcpiLoadTable: Not needed. 9341 - AcpiUnloadTable: Not needed. 9342 9343 New ACPICA interfaces: 9344 9345 - AcpiInitializeTables: Must be called before the table manager can be 9346 used. 9347 - AcpiReallocateRootTable: Used to transfer the root table to dynamically 9348 allocated memory after it becomes available. 9349 - AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI 9350 tables 9351 in the RSDT/XSDT. 9352 9353 Other ACPICA changes: 9354 9355 - AcpiGetTableHeader returns the actual mapped table header, not a copy. 9356 Use 9357 AcpiOsUnmapMemory to free this mapping. 9358 - AcpiGetTable returns the actual mapped table. The mapping is managed 9359 internally and must not be deleted by the caller. Use of this interface 9360 causes no additional dynamic memory allocation. 9361 - AcpiFindRootPointer: Support for physical addressing has been 9362 eliminated, 9363 it appeared to be unused. 9364 - The interface to AcpiOsMapMemory has changed to be consistent with the 9365 other allocation interfaces. 9366 - The interface to AcpiOsGetRootPointer has changed to eliminate 9367 unnecessary 9368 parameters. 9369 - ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on 9370 64- 9371 bit platforms. Was previously 64 bits on all platforms. 9372 - The interface to the ACPI Global Lock acquire/release macros have 9373 changed 9374 slightly since ACPICA no longer keeps a local copy of the FACS with a 9375 constructed pointer to the actual global lock. 9376 9377 Porting to the new table manager: 9378 9379 - AcpiInitializeTables: Must be called once, and can be called anytime 9380 during the OS initialization process. It allows the host to specify an 9381 area 9382 of memory to be used to store the internal version of the RSDT/XSDT (root 9383 table). This allows the host to access ACPI tables before memory 9384 management 9385 is initialized and running. 9386 - AcpiReallocateRootTable: Can be called after memory management is 9387 running 9388 to copy the root table to a dynamically allocated array, freeing up the 9389 scratch memory specified in the call to AcpiInitializeTables. 9390 - AcpiSubsystemInitialize: This existing interface is independent of the 9391 Table Manager, and does not have to be called before the Table Manager 9392 can 9393 be used, it only must be called before the rest of ACPICA can be used. 9394 - ACPI Tables: Some changes have been made to the names and structure of 9395 the 9396 actbl.h and actbl1.h header files and may require changes to existing 9397 code. 9398 For example, bitfields have been completely removed because of their lack 9399 of 9400 portability across C compilers. 9401 - Update interfaces to the Global Lock acquire/release macros if local 9402 versions are used. (see acwin.h) 9403 9404 Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c 9405 9406 New files: tbfind.c 9407 9408 Example Code and Data Size: These are the sizes for the OS-independent 9409 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9410 debug version of the code includes the debug output trace mechanism and 9411 has 9412 a much larger code and data size. 9413 9414 Previous Release: 9415 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 9416 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 9417 Current Release: 9418 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 9419 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 9420 9421 9422 2) iASL Compiler/Disassembler and Tools: 9423 9424 No changes for this release. 9425 9426 ---------------------------------------- 9427 21 July 2006. Summary of changes for version 20060721: 9428 9429 1) ACPI CA Core Subsystem: 9430 9431 The full source code for the ASL test suite used to validate the iASL 9432 compiler and the ACPICA core subsystem is being released with the ACPICA 9433 source for the first time. The source is contained in a separate package 9434 and 9435 consists of over 1100 files that exercise all ASL/AML operators. The 9436 package 9437 should appear on the Intel/ACPI web site shortly. (Valery Podrezov, 9438 Fiodor 9439 Suietov) 9440 9441 Completed a new design and implementation for support of the ACPI Global 9442 Lock. On the OS side, the global lock is now treated as a standard AML 9443 mutex. Previously, multiple OS threads could "acquire" the global lock 9444 simultaneously. However, this could cause the BIOS to be starved out of 9445 the 9446 lock - especially in cases such as the Embedded Controller driver where 9447 there is a tight coupling between the OS and the BIOS. 9448 9449 Implemented an optimization for the ACPI Global Lock interrupt mechanism. 9450 The Global Lock interrupt handler no longer queues the execution of a 9451 separate thread to signal the global lock semaphore. Instead, the 9452 semaphore 9453 is signaled directly from the interrupt handler. 9454 9455 Implemented support within the AML interpreter for package objects that 9456 contain a larger AML length (package list length) than the package 9457 element 9458 count. In this case, the length of the package is truncated to match the 9459 package element count. Some BIOS code apparently modifies the package 9460 length 9461 on the fly, and this change supports this behavior. Provides 9462 compatibility 9463 with the MS AML interpreter. (With assistance from Fiodor Suietov) 9464 9465 Implemented a temporary fix for the BankValue parameter of a Bank Field 9466 to 9467 support all constant values, now including the Zero and One opcodes. 9468 Evaluation of this parameter must eventually be converted to a full 9469 TermArg 9470 evaluation. A not-implemented error is now returned (temporarily) for 9471 non- 9472 constant values for this parameter. 9473 9474 Fixed problem reports (Fiodor Suietov) integrated: 9475 - Fix for premature object deletion after CopyObject on Operation Region 9476 (BZ 9477 350) 9478 9479 Example Code and Data Size: These are the sizes for the OS-independent 9480 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9481 debug version of the code includes the debug output trace mechanism and 9482 has 9483 a much larger code and data size. 9484 9485 Previous Release: 9486 Non-Debug Version: 80.7K Code, 18.0K Data, 98.7K Total 9487 Debug Version: 160.9K Code, 65.1K Data, 226.0K Total 9488 Current Release: 9489 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 9490 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 9491 9492 9493 2) iASL Compiler/Disassembler and Tools: 9494 9495 No changes for this release. 9496 9497 ---------------------------------------- 9498 07 July 2006. Summary of changes for version 20060707: 9499 9500 1) ACPI CA Core Subsystem: 9501 9502 Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers 9503 that do not allow the initialization of address pointers within packed 9504 structures - even though the hardware itself may support misaligned 9505 transfers. Some of the debug data structures are packed by default to 9506 minimize size. 9507 9508 Added an error message for the case where AcpiOsGetThreadId() returns 9509 zero. 9510 A non-zero value is required by the core ACPICA code to ensure the proper 9511 operation of AML mutexes and recursive control methods. 9512 9513 The DSDT is now the only ACPI table that determines whether the AML 9514 interpreter is in 32-bit or 64-bit mode. Not really a functional change, 9515 but 9516 the hooks for per-table 32/64 switching have been removed from the code. 9517 A 9518 clarification to the ACPI specification is forthcoming in ACPI 3.0B. 9519 9520 Fixed a possible leak of an OwnerID in the error path of 9521 AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID 9522 deletion to a single place in AcpiTbUninstallTable to correct possible 9523 leaks 9524 when using the AcpiTbDeleteTablesByType interface (with assistance from 9525 Lance Ortiz.) 9526 9527 Fixed a problem with Serialized control methods where the semaphore 9528 associated with the method could be over-signaled after multiple method 9529 invocations. 9530 9531 Fixed two issues with the locking of the internal namespace data 9532 structure. 9533 Both the Unload() operator and AcpiUnloadTable interface now lock the 9534 namespace during the namespace deletion associated with the table unload 9535 (with assistance from Linn Crosetto.) 9536 9537 Fixed problem reports (Valery Podrezov) integrated: 9538 - Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426) 9539 9540 Fixed problem reports (Fiodor Suietov) integrated: 9541 - Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369) 9542 - On Address Space handler deletion, needless deactivation call (BZ 374) 9543 - AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ 9544 375) 9545 - Possible memory leak, Notify sub-objects of Processor, Power, 9546 ThermalZone 9547 (BZ 376) 9548 - AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378) 9549 - Minimum Length of RSDT should be validated (BZ 379) 9550 - AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no 9551 Handler (BZ (380) 9552 - AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type 9553 loaded 9554 (BZ 381) 9555 9556 Example Code and Data Size: These are the sizes for the OS-independent 9557 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9558 debug version of the code includes the debug output trace mechanism and 9559 has 9560 a much larger code and data size. 9561 9562 Previous Release: 9563 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 9564 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 9565 Current Release: 9566 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 9567 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 9568 9569 9570 2) iASL Compiler/Disassembler and Tools: 9571 9572 Fixed problem reports: 9573 Compiler segfault when ASL contains a long (>1024) String declaration (BZ 9574 436) 9575 9576 ---------------------------------------- 9577 23 June 2006. Summary of changes for version 20060623: 9578 9579 1) ACPI CA Core Subsystem: 9580 9581 Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This 9582 allows the type to be customized to the host OS for improved efficiency 9583 (since a spinlock is usually a very small object.) 9584 9585 Implemented support for "ignored" bits in the ACPI registers. According 9586 to 9587 the ACPI specification, these bits should be preserved when writing the 9588 registers via a read/modify/write cycle. There are 3 bits preserved in 9589 this 9590 manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11]. 9591 9592 Implemented the initial deployment of new OSL mutex interfaces. Since 9593 some 9594 host operating systems have separate mutex and semaphore objects, this 9595 feature was requested. The base code now uses mutexes (and the new mutex 9596 interfaces) wherever a binary semaphore was used previously. However, for 9597 the current release, the mutex interfaces are defined as macros to map 9598 them 9599 to the existing semaphore interfaces. Therefore, no OSL changes are 9600 required 9601 at this time. (See acpiosxf.h) 9602 9603 Fixed several problems with the support for the control method SyncLevel 9604 parameter. The SyncLevel now works according to the ACPI specification 9605 and 9606 in concert with the Mutex SyncLevel parameter, since the current 9607 SyncLevel 9608 is a property of the executing thread. Mutual exclusion for control 9609 methods 9610 is now implemented with a mutex instead of a semaphore. 9611 9612 Fixed three instances of the use of the C shift operator in the bitfield 9613 support code (exfldio.c) to avoid the use of a shift value larger than 9614 the 9615 target data width. The behavior of C compilers is undefined in this case 9616 and 9617 can cause unpredictable results, and therefore the case must be detected 9618 and 9619 avoided. (Fiodor Suietov) 9620 9621 Added an info message whenever an SSDT or OEM table is loaded dynamically 9622 via the Load() or LoadTable() ASL operators. This should improve 9623 debugging 9624 capability since it will show exactly what tables have been loaded 9625 (beyond 9626 the tables present in the RSDT/XSDT.) 9627 9628 Example Code and Data Size: These are the sizes for the OS-independent 9629 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9630 debug version of the code includes the debug output trace mechanism and 9631 has 9632 a much larger code and data size. 9633 9634 Previous Release: 9635 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 9636 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 9637 Current Release: 9638 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 9639 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 9640 9641 9642 2) iASL Compiler/Disassembler and Tools: 9643 9644 No changes for this release. 9645 9646 ---------------------------------------- 9647 08 June 2006. Summary of changes for version 20060608: 9648 9649 1) ACPI CA Core Subsystem: 9650 9651 Converted the locking mutex used for the ACPI hardware to a spinlock. 9652 This 9653 change should eliminate all problems caused by attempting to acquire a 9654 semaphore at interrupt level, and it means that all ACPICA external 9655 interfaces that directly access the ACPI hardware can be safely called 9656 from 9657 interrupt level. OSL code that implements the semaphore interfaces should 9658 be 9659 able to eliminate any workarounds for being called at interrupt level. 9660 9661 Fixed a regression introduced in 20060526 where the ACPI device 9662 initialization could be prematurely aborted with an AE_NOT_FOUND if a 9663 device 9664 did not have an optional _INI method. 9665 9666 Fixed an IndexField issue where a write to the Data Register should be 9667 limited in size to the AccessSize (width) of the IndexField itself. (BZ 9668 433, 9669 Fiodor Suietov) 9670 9671 Fixed problem reports (Valery Podrezov) integrated: 9672 - Allow store of ThermalZone objects to Debug object (BZ 5369/5370) 9673 9674 Fixed problem reports (Fiodor Suietov) integrated: 9675 - AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364) 9676 9677 Removed four global mutexes that were obsolete and were no longer being 9678 used. 9679 9680 Example Code and Data Size: These are the sizes for the OS-independent 9681 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9682 debug version of the code includes the debug output trace mechanism and 9683 has 9684 a much larger code and data size. 9685 9686 Previous Release: 9687 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 9688 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 9689 Current Release: 9690 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 9691 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 9692 9693 9694 2) iASL Compiler/Disassembler and Tools: 9695 9696 Fixed a fault when using -g option (get tables from registry) on Windows 9697 machines. 9698 9699 Fixed problem reports integrated: 9700 - Generate error if CreateField NumBits parameter is zero. (BZ 405) 9701 - Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor 9702 Suietov) 9703 - Global table revision override (-r) is ignored (BZ 413) 9704 9705 ---------------------------------------- 9706 26 May 2006. Summary of changes for version 20060526: 9707 9708 1) ACPI CA Core Subsystem: 9709 9710 Restructured, flattened, and simplified the internal interfaces for 9711 namespace object evaluation - resulting in smaller code, less CPU stack 9712 use, 9713 and fewer interfaces. (With assistance from Mikhail Kouzmich) 9714 9715 Fixed a problem with the CopyObject operator where the first parameter 9716 was 9717 not typed correctly for the parser, interpreter, compiler, and 9718 disassembler. 9719 Caused various errors and unexpected behavior. 9720 9721 Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits 9722 produced incorrect results with some C compilers. Since the behavior of C 9723 compilers when the shift value is larger than the datatype width is 9724 apparently not well defined, the interpreter now detects this condition 9725 and 9726 simply returns zero as expected in all such cases. (BZ 395) 9727 9728 Fixed problem reports (Valery Podrezov) integrated: 9729 - Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329) 9730 - Allow interpreter to handle nested method declarations (BZ 5361) 9731 9732 Fixed problem reports (Fiodor Suietov) integrated: 9733 - AcpiTerminate doesn't free debug memory allocation list objects (BZ 9734 355) 9735 - After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ 9736 356) 9737 - AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357) 9738 - Resource Manager should return AE_TYPE for non-device objects (BZ 358) 9739 - Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359) 9740 - Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360) 9741 - Incomplete cleanup branch in AcpiPsParseAml (BZ 361) 9742 - Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362) 9743 - AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ 9744 365) 9745 - Status of the Global Initialization Handler call not used (BZ 366) 9746 - Incorrect object parameter to Global Initialization Handler (BZ 367) 9747 9748 Example Code and Data Size: These are the sizes for the OS-independent 9749 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9750 debug version of the code includes the debug output trace mechanism and 9751 has 9752 a much larger code and data size. 9753 9754 Previous Release: 9755 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 9756 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 9757 Current Release: 9758 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 9759 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 9760 9761 9762 2) iASL Compiler/Disassembler and Tools: 9763 9764 Modified the parser to allow the names IO, DMA, and IRQ to be used as 9765 namespace identifiers with no collision with existing resource descriptor 9766 macro names. This provides compatibility with other ASL compilers and is 9767 most useful for disassembly/recompilation of existing tables without 9768 parse 9769 errors. (With assistance from Thomas Renninger) 9770 9771 Disassembler: fixed an incorrect disassembly problem with the 9772 DataTableRegion and CopyObject operators. Fixed a possible fault during 9773 disassembly of some Alias operators. 9774 9775 ---------------------------------------- 9776 12 May 2006. Summary of changes for version 20060512: 9777 9778 1) ACPI CA Core Subsystem: 9779 9780 Replaced the AcpiOsQueueForExecution interface with a new interface named 9781 AcpiOsExecute. The major difference is that the new interface does not 9782 have 9783 a Priority parameter, this appeared to be useless and has been replaced 9784 by 9785 a 9786 Type parameter. The Type tells the host what type of execution is being 9787 requested, such as global lock handler, notify handler, GPE handler, etc. 9788 This allows the host to queue and execute the request as appropriate for 9789 the 9790 request type, possibly using different work queues and different 9791 priorities 9792 for the various request types. This enables fixes for multithreading 9793 deadlock problems such as BZ #5534, and will require changes to all 9794 existing 9795 OS interface layers. (Alexey Starikovskiy and Bob Moore) 9796 9797 Fixed a possible memory leak associated with the support for the so- 9798 called 9799 "implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor 9800 Suietov) 9801 9802 Fixed a problem with the Load() operator where a table load from an 9803 operation region could overwrite an internal table buffer by up to 7 9804 bytes 9805 and cause alignment faults on IPF systems. (With assistance from Luming 9806 Yu) 9807 9808 Example Code and Data Size: These are the sizes for the OS-independent 9809 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9810 debug version of the code includes the debug output trace mechanism and 9811 has 9812 a much larger code and data size. 9813 9814 Previous Release: 9815 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 9816 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 9817 Current Release: 9818 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 9819 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 9820 9821 9822 9823 2) iASL Compiler/Disassembler and Tools: 9824 9825 Disassembler: Implemented support to cross reference the internal 9826 namespace 9827 and automatically generate ASL External() statements for symbols not 9828 defined 9829 within the current table being disassembled. This will simplify the 9830 disassembly and recompilation of interdependent tables such as SSDTs 9831 since 9832 these statements will no longer have to be added manually. 9833 9834 Disassembler: Implemented experimental support to automatically detect 9835 invocations of external control methods and generate appropriate 9836 External() 9837 statements. This is problematic because the AML cannot be correctly 9838 parsed 9839 until the number of arguments for each control method is known. 9840 Currently, 9841 standalone method invocations and invocations as the source operand of a 9842 Store() statement are supported. 9843 9844 Disassembler: Implemented support for the ASL pseudo-operators LNotEqual, 9845 LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()), 9846 LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code 9847 more readable and likely closer to the original ASL source. 9848 9849 ---------------------------------------- 9850 21 April 2006. Summary of changes for version 20060421: 9851 9852 1) ACPI CA Core Subsystem: 9853 9854 Removed a device initialization optimization introduced in 20051216 where 9855 the _STA method was not run unless an _INI was also present for the same 9856 device. This optimization could cause problems because it could allow 9857 _INI 9858 methods to be run within a not-present device subtree. (If a not-present 9859 device had no _INI, _STA would not be run, the not-present status would 9860 not 9861 be discovered, and the children of the device would be incorrectly 9862 traversed.) 9863 9864 Implemented a new _STA optimization where namespace subtrees that do not 9865 contain _INI are identified and ignored during device initialization. 9866 Selectively running _STA can significantly improve boot time on large 9867 machines (with assistance from Len Brown.) 9868 9869 Implemented support for the device initialization case where the returned 9870 _STA flags indicate a device not-present but functioning. In this case, 9871 _INI 9872 is not run, but the device children are examined for presence, as per the 9873 ACPI specification. 9874 9875 Implemented an additional change to the IndexField support in order to 9876 conform to MS behavior. The value written to the Index Register is not 9877 simply a byte offset, it is a byte offset in units of the access width of 9878 the parent Index Field. (Fiodor Suietov) 9879 9880 Defined and deployed a new OSL interface, AcpiOsValidateAddress. This 9881 interface is called during the creation of all AML operation regions, and 9882 allows the host OS to exert control over what addresses it will allow the 9883 AML code to access. Operation Regions whose addresses are disallowed will 9884 cause a runtime exception when they are actually accessed (will not 9885 affect 9886 or abort table loading.) See oswinxf or osunixxf for an example 9887 implementation. 9888 9889 Defined and deployed a new OSL interface, AcpiOsValidateInterface. This 9890 interface allows the host OS to match the various "optional" 9891 interface/behavior strings for the _OSI predefined control method as 9892 appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf 9893 for an example implementation. 9894 9895 Restructured and corrected various problems in the exception handling 9896 code 9897 paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod 9898 (with assistance from Takayoshi Kochi.) 9899 9900 Modified the Linux source converter to ignore quoted string literals 9901 while 9902 converting identifiers from mixed to lower case. This will correct 9903 problems 9904 with the disassembler and other areas where such strings must not be 9905 modified. 9906 9907 The ACPI_FUNCTION_* macros no longer require quotes around the function 9908 name. This allows the Linux source converter to convert the names, now 9909 that 9910 the converter ignores quoted strings. 9911 9912 Example Code and Data Size: These are the sizes for the OS-independent 9913 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9914 debug version of the code includes the debug output trace mechanism and 9915 has 9916 a much larger code and data size. 9917 9918 Previous Release: 9919 9920 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 9921 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 9922 Current Release: 9923 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 9924 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 9925 9926 9927 2) iASL Compiler/Disassembler and Tools: 9928 9929 Implemented 3 new warnings for iASL, and implemented multiple warning 9930 levels 9931 (w2 flag). 9932 9933 1) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is 9934 not 9935 WAIT_FOREVER (0xFFFF) and the code does not examine the return value to 9936 check for the possible timeout, a warning is issued. 9937 9938 2) Useless operators: If an ASL operator does not specify an optional 9939 target 9940 operand and it also does not use the function return value from the 9941 operator, a warning is issued since the operator effectively does 9942 nothing. 9943 9944 3) Unreferenced objects: If a namespace object is created, but never 9945 referenced, a warning is issued. This is a warning level 2 since there 9946 are 9947 cases where this is ok, such as when a secondary table is loaded that 9948 uses 9949 the unreferenced objects. Even so, care is taken to only flag objects 9950 that 9951 don't look like they will ever be used. For example, the reserved methods 9952 (starting with an underscore) are usually not referenced because it is 9953 expected that the OS will invoke them. 9954 9955 ---------------------------------------- 9956 31 March 2006. Summary of changes for version 20060331: 9957 9958 1) ACPI CA Core Subsystem: 9959 9960 Implemented header file support for the following additional ACPI tables: 9961 ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this 9962 support, 9963 all current and known ACPI tables are now defined in the ACPICA headers 9964 and 9965 are available for use by device drivers and other software. 9966 9967 Implemented support to allow tables that contain ACPI names with invalid 9968 characters to be loaded. Previously, this would cause the table load to 9969 fail, but since there are several known cases of such tables on existing 9970 machines, this change was made to enable ACPI support for them. Also, 9971 this 9972 matches the behavior of the Microsoft ACPI implementation. 9973 9974 Fixed a couple regressions introduced during the memory optimization in 9975 the 9976 20060317 release. The namespace node definition required additional 9977 reorganization and an internal datatype that had been changed to 8-bit 9978 was 9979 restored to 32-bit. (Valery Podrezov) 9980 9981 Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState 9982 could be passed through to AcpiOsReleaseObject which is unexpected. Such 9983 null pointers are now trapped and ignored, matching the behavior of the 9984 previous implementation before the deployment of AcpiOsReleaseObject. 9985 (Valery Podrezov, Fiodor Suietov) 9986 9987 Fixed a memory mapping leak during the deletion of a SystemMemory 9988 operation 9989 region where a cached memory mapping was not deleted. This became a 9990 noticeable problem for operation regions that are defined within 9991 frequently 9992 used control methods. (Dana Meyers) 9993 9994 Reorganized the ACPI table header files into two main files: one for the 9995 ACPI tables consumed by the ACPICA core, and another for the 9996 miscellaneous 9997 ACPI tables that are consumed by the drivers and other software. The 9998 various 9999 FADT definitions were merged into one common section and three different 10000 tables (ACPI 1.0, 1.0+, and 2.0) 10001 10002 Example Code and Data Size: These are the sizes for the OS-independent 10003 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 10004 debug version of the code includes the debug output trace mechanism and 10005 has 10006 a much larger code and data size. 10007 10008 Previous Release: 10009 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 10010 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 10011 Current Release: 10012 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 10013 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 10014 10015 10016 2) iASL Compiler/Disassembler and Tools: 10017 10018 Disassembler: Implemented support to decode and format all non-AML ACPI 10019 tables (tables other than DSDTs and SSDTs.) This includes the new tables 10020 added to the ACPICA headers, therefore all current and known ACPI tables 10021 are 10022 supported. 10023 10024 Disassembler: The change to allow ACPI names with invalid characters also 10025 enables the disassembly of such tables. Invalid characters within names 10026 are 10027 changed to '*' to make the name printable; the iASL compiler will still 10028 generate an error for such names, however, since this is an invalid ACPI 10029 character. 10030 10031 Implemented an option for AcpiXtract (-a) to extract all tables found in 10032 the 10033 input file. The default invocation extracts only the DSDTs and SSDTs. 10034 10035 Fixed a couple of gcc generation issues for iASL and AcpiExec and added a 10036 makefile for the AcpiXtract utility. 10037 10038 ---------------------------------------- 10039 17 March 2006. Summary of changes for version 20060317: 10040 10041 1) ACPI CA Core Subsystem: 10042 10043 Implemented the use of a cache object for all internal namespace nodes. 10044 Since there are about 1000 static nodes in a typical system, this will 10045 decrease memory use for cache implementations that minimize per- 10046 allocation 10047 overhead (such as a slab allocator.) 10048 10049 Removed the reference count mechanism for internal namespace nodes, since 10050 it 10051 was deemed unnecessary. This reduces the size of each namespace node by 10052 about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit 10053 case, 10054 and 32 bytes for the 64-bit case. 10055 10056 Optimized several internal data structures to reduce object size on 64- 10057 bit 10058 platforms by packing data within the 64-bit alignment. This includes the 10059 frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static 10060 instances corresponding to the namespace objects. 10061 10062 Added two new strings for the predefined _OSI method: "Windows 2001.1 10063 SP1" 10064 and "Windows 2006". 10065 10066 Split the allocation tracking mechanism out to a separate file, from 10067 utalloc.c to uttrack.c. This mechanism appears to be only useful for 10068 application-level code. Kernels may wish to not include uttrack.c in 10069 distributions. 10070 10071 Removed all remnants of the obsolete ACPI_REPORT_* macros and the 10072 associated 10073 code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING 10074 macros.) 10075 10076 Code and Data Size: These are the sizes for the acpica.lib produced by 10077 the 10078 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any 10079 ACPI 10080 driver or OSPM code. The debug version of the code includes the debug 10081 output 10082 trace mechanism and has a much larger code and data size. Note that these 10083 values will vary depending on the efficiency of the compiler and the 10084 compiler options used during generation. 10085 10086 Previous Release: 10087 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 10088 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 10089 Current Release: 10090 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 10091 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 10092 10093 10094 2) iASL Compiler/Disassembler and Tools: 10095 10096 Implemented an ANSI C version of the acpixtract utility. This version 10097 will 10098 automatically extract the DSDT and all SSDTs from the input acpidump text 10099 file and dump the binary output to separate files. It can also display a 10100 summary of the input file including the headers for each table found and 10101 will extract any single ACPI table, with any signature. (See 10102 source/tools/acpixtract) 10103 10104 ---------------------------------------- 10105 10 March 2006. Summary of changes for version 20060310: 10106 10107 1) ACPI CA Core Subsystem: 10108 10109 Tagged all external interfaces to the subsystem with the new 10110 ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to 10111 assist 10112 kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL 10113 macro. The default definition is NULL. 10114 10115 Added the ACPI_THREAD_ID type for the return value from 10116 AcpiOsGetThreadId. 10117 This allows the host to define this as necessary to simplify kernel 10118 integration. The default definition is ACPI_NATIVE_UINT. 10119 10120 Fixed two interpreter problems related to error processing, the deletion 10121 of 10122 objects, and placing invalid pointers onto the internal operator result 10123 stack. BZ 6028, 6151 (Valery Podrezov) 10124 10125 Increased the reference count threshold where a warning is emitted for 10126 large 10127 reference counts in order to eliminate unnecessary warnings on systems 10128 with 10129 large namespaces (especially 64-bit.) Increased the value from 0x400 to 10130 0x800. 10131 10132 Due to universal disagreement as to the meaning of the 'c' in the 10133 calloc() 10134 function, the ACPI_MEM_CALLOCATE macro has been renamed to 10135 ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'. 10136 ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and 10137 ACPI_FREE. 10138 10139 Code and Data Size: These are the sizes for the acpica.lib produced by 10140 the 10141 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any 10142 ACPI 10143 driver or OSPM code. The debug version of the code includes the debug 10144 output 10145 trace mechanism and has a much larger code and data size. Note that these 10146 values will vary depending on the efficiency of the compiler and the 10147 compiler options used during generation. 10148 10149 Previous Release: 10150 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 10151 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 10152 Current Release: 10153 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 10154 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 10155 10156 10157 2) iASL Compiler/Disassembler: 10158 10159 Disassembler: implemented support for symbolic resource descriptor 10160 references. If a CreateXxxxField operator references a fixed offset 10161 within 10162 a 10163 resource descriptor, a name is assigned to the descriptor and the offset 10164 is 10165 translated to the appropriate resource tag and pathname. The addition of 10166 this support brings the disassembled code very close to the original ASL 10167 source code and helps eliminate run-time errors when the disassembled 10168 code 10169 is modified (and recompiled) in such a way as to invalidate the original 10170 fixed offsets. 10171 10172 Implemented support for a Descriptor Name as the last parameter to the 10173 ASL 10174 Register() macro. This parameter was inadvertently left out of the ACPI 10175 specification, and will be added for ACPI 3.0b. 10176 10177 Fixed a problem where the use of the "_OSI" string (versus the full path 10178 "\_OSI") caused an internal compiler error. ("No back ptr to op") 10179 10180 Fixed a problem with the error message that occurs when an invalid string 10181 is 10182 used for a _HID object (such as one with an embedded asterisk: 10183 "*PNP010A".) 10184 The correct message is now displayed. 10185 10186 ---------------------------------------- 10187 17 February 2006. Summary of changes for version 20060217: 10188 10189 1) ACPI CA Core Subsystem: 10190 10191 Implemented a change to the IndexField support to match the behavior of 10192 the 10193 Microsoft AML interpreter. The value written to the Index register is now 10194 a 10195 byte offset, no longer an index based upon the width of the Data 10196 register. 10197 This should fix IndexField problems seen on some machines where the Data 10198 register is not exactly one byte wide. The ACPI specification will be 10199 clarified on this point. 10200 10201 Fixed a problem where several resource descriptor types could overrun the 10202 internal descriptor buffer due to size miscalculation: VendorShort, 10203 VendorLong, and Interrupt. This was noticed on IA64 machines, but could 10204 affect all platforms. 10205 10206 Fixed a problem where individual resource descriptors were misaligned 10207 within 10208 the internal buffer, causing alignment faults on IA64 platforms. 10209 10210 Code and Data Size: These are the sizes for the acpica.lib produced by 10211 the 10212 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any 10213 ACPI 10214 driver or OSPM code. The debug version of the code includes the debug 10215 output 10216 trace mechanism and has a much larger code and data size. Note that these 10217 values will vary depending on the efficiency of the compiler and the 10218 compiler options used during generation. 10219 10220 Previous Release: 10221 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 10222 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 10223 Current Release: 10224 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 10225 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 10226 10227 10228 2) iASL Compiler/Disassembler: 10229 10230 Implemented support for new reserved names: _WDG and _WED are Microsoft 10231 extensions for Windows Instrumentation Management, _TDL is a new ACPI- 10232 defined method (Throttling Depth Limit.) 10233 10234 Fixed a problem where a zero-length VendorShort or VendorLong resource 10235 descriptor was incorrectly emitted as a descriptor of length one. 10236 10237 ---------------------------------------- 10238 10 February 2006. Summary of changes for version 20060210: 10239 10240 1) ACPI CA Core Subsystem: 10241 10242 Removed a couple of extraneous ACPI_ERROR messages that appeared during 10243 normal execution. These became apparent after the conversion from 10244 ACPI_DEBUG_PRINT. 10245 10246 Fixed a problem where the CreateField operator could hang if the BitIndex 10247 or 10248 NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359) 10249 10250 Fixed a problem where a DeRefOf operation on a buffer object incorrectly 10251 failed with an exception. This also fixes a couple of related RefOf and 10252 DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387) 10253 10254 Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead 10255 of 10256 AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov, 10257 BZ 10258 5480) 10259 10260 Implemented a memory cleanup at the end of the execution of each 10261 iteration 10262 of an AML While() loop, preventing the accumulation of outstanding 10263 objects. 10264 (Valery Podrezov, BZ 5427) 10265 10266 Eliminated a chunk of duplicate code in the object resolution code. 10267 (Valery 10268 Podrezov, BZ 5336) 10269 10270 Fixed several warnings during the 64-bit code generation. 10271 10272 The AcpiSrc source code conversion tool now inserts one line of 10273 whitespace 10274 after an if() statement that is followed immediately by a comment, 10275 improving 10276 readability of the Linux code. 10277 10278 Code and Data Size: The current and previous library sizes for the core 10279 subsystem are shown below. These are the code and data sizes for the 10280 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 10281 These 10282 values do not include any ACPI driver or OSPM code. The debug version of 10283 the 10284 code includes the debug output trace mechanism and has a much larger code 10285 and data size. Note that these values will vary depending on the 10286 efficiency 10287 of the compiler and the compiler options used during generation. 10288 10289 Previous Release: 10290 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 10291 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 10292 Current Release: 10293 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 10294 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 10295 10296 10297 2) iASL Compiler/Disassembler: 10298 10299 Fixed a problem with the disassembly of a BankField operator with a 10300 complex 10301 expression for the BankValue parameter. 10302 10303 ---------------------------------------- 10304 27 January 2006. Summary of changes for version 20060127: 10305 10306 1) ACPI CA Core Subsystem: 10307 10308 Implemented support in the Resource Manager to allow unresolved 10309 namestring 10310 references within resource package objects for the _PRT method. This 10311 support 10312 is in addition to the previously implemented unresolved reference support 10313 within the AML parser. If the interpreter slack mode is enabled, these 10314 unresolved references will be passed through to the caller as a NULL 10315 package 10316 entry. 10317 10318 Implemented and deployed new macros and functions for error and warning 10319 messages across the subsystem. These macros are simpler and generate less 10320 code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION, 10321 ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older 10322 macros remain defined to allow ACPI drivers time to migrate to the new 10323 macros. 10324 10325 Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of 10326 the 10327 Acquire/Release Lock OSL interfaces. 10328 10329 Fixed a problem where Alias ASL operators are sometimes not correctly 10330 resolved, in both the interpreter and the iASL compiler. 10331 10332 Fixed several problems with the implementation of the 10333 ConcatenateResTemplate 10334 ASL operator. As per the ACPI specification, zero length buffers are now 10335 treated as a single EndTag. One-length buffers always cause a fatal 10336 exception. Non-zero length buffers that do not end with a full 2-byte 10337 EndTag 10338 cause a fatal exception. 10339 10340 Fixed a possible structure overwrite in the AcpiGetObjectInfo external 10341 interface. (With assistance from Thomas Renninger) 10342 10343 Code and Data Size: The current and previous library sizes for the core 10344 subsystem are shown below. These are the code and data sizes for the 10345 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 10346 These 10347 values do not include any ACPI driver or OSPM code. The debug version of 10348 the 10349 code includes the debug output trace mechanism and has a much larger code 10350 and data size. Note that these values will vary depending on the 10351 efficiency 10352 of the compiler and the compiler options used during generation. 10353 10354 Previous Release: 10355 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 10356 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 10357 Current Release: 10358 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 10359 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 10360 10361 10362 2) iASL Compiler/Disassembler: 10363 10364 Fixed an internal error that was generated for any forward references to 10365 ASL 10366 Alias objects. 10367 10368 ---------------------------------------- 10369 13 January 2006. Summary of changes for version 20060113: 10370 10371 1) ACPI CA Core Subsystem: 10372 10373 Added 2006 copyright to all module headers and signons. This affects 10374 virtually every file in the ACPICA core subsystem, iASL compiler, and the 10375 utilities. 10376 10377 Enhanced the ACPICA error reporting in order to simplify user migration 10378 to 10379 the non-debug version of ACPICA. Replaced all instances of the 10380 ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN 10381 debug 10382 levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros, 10383 respectively. This preserves all error and warning messages in the non- 10384 debug 10385 version of the ACPICA code (this has been referred to as the "debug lite" 10386 option.) Over 200 cases were converted to create a total of over 380 10387 error/warning messages across the ACPICA code. This increases the code 10388 and 10389 data size of the default non-debug version of the code somewhat (about 10390 13K), 10391 but all error/warning reporting may be disabled if desired (and code 10392 eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time 10393 configuration option. The size of the debug version of ACPICA remains 10394 about 10395 the same. 10396 10397 Fixed a memory leak within the AML Debugger "Set" command. One object was 10398 not properly deleted for every successful invocation of the command. 10399 10400 Code and Data Size: The current and previous library sizes for the core 10401 subsystem are shown below. These are the code and data sizes for the 10402 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 10403 These 10404 values do not include any ACPI driver or OSPM code. The debug version of 10405 the 10406 code includes the debug output trace mechanism and has a much larger code 10407 and data size. Note that these values will vary depending on the 10408 efficiency 10409 of the compiler and the compiler options used during generation. 10410 10411 Previous Release: 10412 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 10413 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 10414 Current Release: 10415 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 10416 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 10417 10418 10419 2) iASL Compiler/Disassembler: 10420 10421 The compiler now officially supports the ACPI 3.0a specification that was 10422 released on December 30, 2005. (Specification is available at 10423 www.acpi.info) 10424 10425 ---------------------------------------- 10426 16 December 2005. Summary of changes for version 20051216: 10427 10428 1) ACPI CA Core Subsystem: 10429 10430 Implemented optional support to allow unresolved names within ASL Package 10431 objects. A null object is inserted in the package when a named reference 10432 cannot be located in the current namespace. Enabled via the interpreter 10433 slack flag, this should eliminate AE_NOT_FOUND exceptions seen on 10434 machines 10435 that contain such code. 10436 10437 Implemented an optimization to the initialization sequence that can 10438 improve 10439 boot time. During ACPI device initialization, the _STA method is now run 10440 if 10441 and only if the _INI method exists. The _STA method is used to determine 10442 if 10443 the device is present; An _INI can only be run if _STA returns present, 10444 but 10445 it is a waste of time to run the _STA method if the _INI does not exist. 10446 (Prototype and assistance from Dong Wei) 10447 10448 Implemented use of the C99 uintptr_t for the pointer casting macros if it 10449 is 10450 available in the current compiler. Otherwise, the default (void *) cast 10451 is 10452 used as before. 10453 10454 Fixed some possible memory leaks found within the execution path of the 10455 Break, Continue, If, and CreateField operators. (Valery Podrezov) 10456 10457 Fixed a problem introduced in the 20051202 release where an exception is 10458 generated during method execution if a control method attempts to declare 10459 another method. 10460 10461 Moved resource descriptor string constants that are used by both the AML 10462 disassembler and AML debugger to the common utilities directory so that 10463 these components are independent. 10464 10465 Implemented support in the AcpiExec utility (-e switch) to globally 10466 ignore 10467 exceptions during control method execution (method is not aborted.) 10468 10469 Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix 10470 generation. 10471 10472 Code and Data Size: The current and previous library sizes for the core 10473 subsystem are shown below. These are the code and data sizes for the 10474 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 10475 These 10476 values do not include any ACPI driver or OSPM code. The debug version of 10477 the 10478 code includes the debug output trace mechanism and has a much larger code 10479 and data size. Note that these values will vary depending on the 10480 efficiency 10481 of the compiler and the compiler options used during generation. 10482 10483 Previous Release: 10484 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 10485 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 10486 Current Release: 10487 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 10488 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 10489 10490 10491 2) iASL Compiler/Disassembler: 10492 10493 Fixed a problem where a CPU stack overflow fault could occur if a 10494 recursive 10495 method call was made from within a Return statement. 10496 10497 ---------------------------------------- 10498 02 December 2005. Summary of changes for version 20051202: 10499 10500 1) ACPI CA Core Subsystem: 10501 10502 Modified the parsing of control methods to no longer create namespace 10503 objects during the first pass of the parse. Objects are now created only 10504 during the execute phase, at the moment the namespace creation operator 10505 is 10506 encountered in the AML (Name, OperationRegion, CreateByteField, etc.) 10507 This 10508 should eliminate ALREADY_EXISTS exceptions seen on some machines where 10509 reentrant control methods are protected by an AML mutex. The mutex will 10510 now 10511 correctly block multiple threads from attempting to create the same 10512 object 10513 more than once. 10514 10515 Increased the number of available Owner Ids for namespace object tracking 10516 from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen 10517 on 10518 some machines with a large number of ACPI tables (either static or 10519 dynamic). 10520 10521 Fixed a problem with the AcpiExec utility where a fault could occur when 10522 the 10523 -b switch (batch mode) is used. 10524 10525 Enhanced the namespace dump routine to output the owner ID for each 10526 namespace object. 10527 10528 Code and Data Size: The current and previous library sizes for the core 10529 subsystem are shown below. These are the code and data sizes for the 10530 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 10531 These 10532 values do not include any ACPI driver or OSPM code. The debug version of 10533 the 10534 code includes the debug output trace mechanism and has a much larger code 10535 and data size. Note that these values will vary depending on the 10536 efficiency 10537 of the compiler and the compiler options used during generation. 10538 10539 Previous Release: 10540 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 10541 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 10542 Current Release: 10543 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 10544 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 10545 10546 10547 2) iASL Compiler/Disassembler: 10548 10549 Fixed a parse error during compilation of certain Switch/Case constructs. 10550 To 10551 simplify the parse, the grammar now allows for multiple Default 10552 statements 10553 and this error is now detected and flagged during the analysis phase. 10554 10555 Disassembler: The disassembly now includes the contents of the original 10556 table header within a comment at the start of the file. This includes the 10557 name and version of the original ASL compiler. 10558 10559 ---------------------------------------- 10560 17 November 2005. Summary of changes for version 20051117: 10561 10562 1) ACPI CA Core Subsystem: 10563 10564 Fixed a problem in the AML parser where the method thread count could be 10565 decremented below zero if any errors occurred during the method parse 10566 phase. 10567 This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some 10568 machines. 10569 This also fixed a related regression with the mechanism that detects and 10570 corrects methods that cannot properly handle reentrancy (related to the 10571 deployment of the new OwnerId mechanism.) 10572 10573 Eliminated the pre-parsing of control methods (to detect errors) during 10574 table load. Related to the problem above, this was causing unwind issues 10575 if 10576 any errors occurred during the parse, and it seemed to be overkill. A 10577 table 10578 load should not be aborted if there are problems with any single control 10579 method, thus rendering this feature rather pointless. 10580 10581 Fixed a problem with the new table-driven resource manager where an 10582 internal 10583 buffer overflow could occur for small resource templates. 10584 10585 Implemented a new external interface, AcpiGetVendorResource. This 10586 interface 10587 will find and return a vendor-defined resource descriptor within a _CRS 10588 or 10589 _PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn 10590 Helgaas. 10591 10592 Removed the length limit (200) on string objects as per the upcoming ACPI 10593 3.0A specification. This affects the following areas of the interpreter: 10594 1) 10595 any implicit conversion of a Buffer to a String, 2) a String object 10596 result 10597 of the ASL Concatentate operator, 3) the String object result of the ASL 10598 ToString operator. 10599 10600 Fixed a problem in the Windows OS interface layer (OSL) where a 10601 WAIT_FOREVER 10602 on a semaphore object would incorrectly timeout. This allows the 10603 multithreading features of the AcpiExec utility to work properly under 10604 Windows. 10605 10606 Updated the Linux makefiles for the iASL compiler and AcpiExec to include 10607 the recently added file named "utresrc.c". 10608 10609 Code and Data Size: The current and previous library sizes for the core 10610 subsystem are shown below. These are the code and data sizes for the 10611 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 10612 These 10613 values do not include any ACPI driver or OSPM code. The debug version of 10614 the 10615 code includes the debug output trace mechanism and has a much larger code 10616 and data size. Note that these values will vary depending on the 10617 efficiency 10618 of the compiler and the compiler options used during generation. 10619 10620 Previous Release: 10621 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 10622 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 10623 Current Release: 10624 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 10625 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 10626 10627 10628 2) iASL Compiler/Disassembler: 10629 10630 Removed the limit (200) on string objects as per the upcoming ACPI 3.0A 10631 specification. For the iASL compiler, this means that string literals 10632 within 10633 the source ASL can be of any length. 10634 10635 Enhanced the listing output to dump the AML code for resource descriptors 10636 immediately after the ASL code for each descriptor, instead of in a block 10637 at 10638 the end of the entire resource template. 10639 10640 Enhanced the compiler debug output to dump the entire original parse tree 10641 constructed during the parse phase, before any transforms are applied to 10642 the 10643 tree. The transformed tree is dumped also. 10644 10645 ---------------------------------------- 10646 02 November 2005. Summary of changes for version 20051102: 10647 10648 1) ACPI CA Core Subsystem: 10649 10650 Modified the subsystem initialization sequence to improve GPE support. 10651 The 10652 GPE initialization has been split into two parts in order to defer 10653 execution 10654 of the _PRW methods (Power Resources for Wake) until after the hardware 10655 is 10656 fully initialized and the SCI handler is installed. This allows the _PRW 10657 methods to access fields protected by the Global Lock. This will fix 10658 systems 10659 where a NO_GLOBAL_LOCK exception has been seen during initialization. 10660 10661 Converted the ACPI internal object disassemble and display code within 10662 the 10663 AML debugger to fully table-driven operation, reducing code size and 10664 increasing maintainability. 10665 10666 Fixed a regression with the ConcatenateResTemplate() ASL operator 10667 introduced 10668 in the 20051021 release. 10669 10670 Implemented support for "local" internal ACPI object types within the 10671 debugger "Object" command and the AcpiWalkNamespace external interfaces. 10672 These local types include RegionFields, BankFields, IndexFields, Alias, 10673 and 10674 reference objects. 10675 10676 Moved common AML resource handling code into a new file, "utresrc.c". 10677 This 10678 code is shared by both the Resource Manager and the AML Debugger. 10679 10680 Code and Data Size: The current and previous library sizes for the core 10681 subsystem are shown below. These are the code and data sizes for the 10682 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 10683 These 10684 values do not include any ACPI driver or OSPM code. The debug version of 10685 the 10686 code includes the debug output trace mechanism and has a much larger code 10687 and data size. Note that these values will vary depending on the 10688 efficiency 10689 of the compiler and the compiler options used during generation. 10690 10691 Previous Release: 10692 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 10693 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 10694 Current Release: 10695 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 10696 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 10697 10698 10699 2) iASL Compiler/Disassembler: 10700 10701 Fixed a problem with very large initializer lists (more than 4000 10702 elements) 10703 for both Buffer and Package objects where the parse stack could overflow. 10704 10705 Enhanced the pre-compile source code scan for non-ASCII characters to 10706 ignore 10707 characters within comment fields. The scan is now always performed and is 10708 no 10709 longer optional, detecting invalid characters within a source file 10710 immediately rather than during the parse phase or later. 10711 10712 Enhanced the ASL grammar definition to force early reductions on all 10713 list- 10714 style grammar elements so that the overall parse stack usage is greatly 10715 reduced. This should improve performance and reduce the possibility of 10716 parse 10717 stack overflow. 10718 10719 Eliminated all reduce/reduce conflicts in the iASL parser generation. 10720 Also, 10721 with the addition of a %expected statement, the compiler generates from 10722 source with no warnings. 10723 10724 Fixed a possible segment fault in the disassembler if the input filename 10725 does not contain a "dot" extension (Thomas Renninger). 10726 10727 ---------------------------------------- 10728 21 October 2005. Summary of changes for version 20051021: 10729 10730 1) ACPI CA Core Subsystem: 10731 10732 Implemented support for the EM64T and other x86-64 processors. This 10733 essentially entails recognizing that these processors support non-aligned 10734 memory transfers. Previously, all 64-bit processors were assumed to lack 10735 hardware support for non-aligned transfers. 10736 10737 Completed conversion of the Resource Manager to nearly full table-driven 10738 operation. Specifically, the resource conversion code (convert AML to 10739 internal format and the reverse) and the debug code to dump internal 10740 resource descriptors are fully table-driven, reducing code and data size 10741 and 10742 improving maintainability. 10743 10744 The OSL interfaces for Acquire and Release Lock now use a 64-bit flag 10745 word 10746 on 64-bit processors instead of a fixed 32-bit word. (With assistance 10747 from 10748 Alexey Starikovskiy) 10749 10750 Implemented support within the resource conversion code for the Type- 10751 Specific byte within the various ACPI 3.0 *WordSpace macros. 10752 10753 Fixed some issues within the resource conversion code for the type- 10754 specific 10755 flags for both Memory and I/O address resource descriptors. For Memory, 10756 implemented support for the MTP and TTP flags. For I/O, split the TRS and 10757 TTP flags into two separate fields. 10758 10759 Code and Data Size: The current and previous library sizes for the core 10760 subsystem are shown below. These are the code and data sizes for the 10761 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 10762 These 10763 values do not include any ACPI driver or OSPM code. The debug version of 10764 the 10765 code includes the debug output trace mechanism and has a much larger code 10766 and data size. Note that these values will vary depending on the 10767 efficiency 10768 of the compiler and the compiler options used during generation. 10769 10770 Previous Release: 10771 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 10772 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 10773 Current Release: 10774 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 10775 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 10776 10777 10778 10779 2) iASL Compiler/Disassembler: 10780 10781 Relaxed a compiler restriction that disallowed a ResourceIndex byte if 10782 the 10783 corresponding ResourceSource string was not also present in a resource 10784 descriptor declaration. This restriction caused problems with existing 10785 AML/ASL code that includes the Index byte without the string. When such 10786 AML 10787 was disassembled, it could not be compiled without modification. Further, 10788 the modified code created a resource template with a different size than 10789 the 10790 original, breaking code that used fixed offsets into the resource 10791 template 10792 buffer. 10793 10794 Removed a recent feature of the disassembler to ignore a lone 10795 ResourceIndex 10796 byte. This byte is now emitted if present so that the exact AML can be 10797 reproduced when the disassembled code is recompiled. 10798 10799 Improved comments and text alignment for the resource descriptor code 10800 emitted by the disassembler. 10801 10802 Implemented disassembler support for the ACPI 3.0 AccessSize field within 10803 a 10804 Register() resource descriptor. 10805 10806 ---------------------------------------- 10807 30 September 2005. Summary of changes for version 20050930: 10808 10809 1) ACPI CA Core Subsystem: 10810 10811 Completed a major overhaul of the Resource Manager code - specifically, 10812 optimizations in the area of the AML/internal resource conversion code. 10813 The 10814 code has been optimized to simplify and eliminate duplicated code, CPU 10815 stack 10816 use has been decreased by optimizing function parameters and local 10817 variables, and naming conventions across the manager have been 10818 standardized 10819 for clarity and ease of maintenance (this includes function, parameter, 10820 variable, and struct/typedef names.) The update may force changes in some 10821 driver code, depending on how resources are handled by the host OS. 10822 10823 All Resource Manager dispatch and information tables have been moved to a 10824 single location for clarity and ease of maintenance. One new file was 10825 created, named "rsinfo.c". 10826 10827 The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to 10828 guarantee that the argument is not evaluated twice, making them less 10829 prone 10830 to macro side-effects. However, since there exists the possibility of 10831 additional stack use if a particular compiler cannot optimize them (such 10832 as 10833 in the debug generation case), the original macros are optionally 10834 available. 10835 Note that some invocations of the return_VALUE macro may now cause size 10836 mismatch warnings; the return_UINT8 and return_UINT32 macros are provided 10837 to 10838 eliminate these. (From Randy Dunlap) 10839 10840 Implemented a new mechanism to enable debug tracing for individual 10841 control 10842 methods. A new external interface, AcpiDebugTrace, is provided to enable 10843 this mechanism. The intent is to allow the host OS to easily enable and 10844 disable tracing for problematic control methods. This interface can be 10845 easily exposed to a user or debugger interface if desired. See the file 10846 psxface.c for details. 10847 10848 AcpiUtCallocate will now return a valid pointer if a length of zero is 10849 specified - a length of one is used and a warning is issued. This matches 10850 the behavior of AcpiUtAllocate. 10851 10852 Code and Data Size: The current and previous library sizes for the core 10853 subsystem are shown below. These are the code and data sizes for the 10854 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 10855 These 10856 values do not include any ACPI driver or OSPM code. The debug version of 10857 the 10858 code includes the debug output trace mechanism and has a much larger code 10859 and data size. Note that these values will vary depending on the 10860 efficiency 10861 of the compiler and the compiler options used during generation. 10862 10863 Previous Release: 10864 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 10865 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 10866 Current Release: 10867 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 10868 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 10869 10870 10871 2) iASL Compiler/Disassembler: 10872 10873 A remark is issued if the effective compile-time length of a package or 10874 buffer is zero. Previously, this was a warning. 10875 10876 ---------------------------------------- 10877 16 September 2005. Summary of changes for version 20050916: 10878 10879 1) ACPI CA Core Subsystem: 10880 10881 Fixed a problem within the Resource Manager where support for the Generic 10882 Register descriptor was not fully implemented. This descriptor is now 10883 fully 10884 recognized, parsed, disassembled, and displayed. 10885 10886 Completely restructured the Resource Manager code to utilize table-driven 10887 dispatch and lookup, eliminating many of the large switch() statements. 10888 This 10889 reduces overall subsystem code size and code complexity. Affects the 10890 resource parsing and construction, disassembly, and debug dump output. 10891 10892 Cleaned up and restructured the debug dump output for all resource 10893 descriptors. Improved readability of the output and reduced code size. 10894 10895 Fixed a problem where changes to internal data structures caused the 10896 optional ACPI_MUTEX_DEBUG code to fail compilation if specified. 10897 10898 Code and Data Size: The current and previous library sizes for the core 10899 subsystem are shown below. These are the code and data sizes for the 10900 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 10901 These 10902 values do not include any ACPI driver or OSPM code. The debug version of 10903 the 10904 code includes the debug output trace mechanism and has a much larger code 10905 and data size. Note that these values will vary depending on the 10906 efficiency 10907 of the compiler and the compiler options used during generation. 10908 10909 Previous Release: 10910 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 10911 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 10912 Current Release: 10913 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 10914 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 10915 10916 10917 2) iASL Compiler/Disassembler: 10918 10919 Updated the disassembler to automatically insert an EndDependentFn() 10920 macro 10921 into the ASL stream if this macro is missing in the original AML code, 10922 simplifying compilation of the resulting ASL module. 10923 10924 Fixed a problem in the disassembler where a disassembled ResourceSource 10925 string (within a large resource descriptor) was not surrounded by quotes 10926 and 10927 not followed by a comma, causing errors when the resulting ASL module was 10928 compiled. Also, escape sequences within a ResourceSource string are now 10929 handled correctly (especially "\\") 10930 10931 ---------------------------------------- 10932 02 September 2005. Summary of changes for version 20050902: 10933 10934 1) ACPI CA Core Subsystem: 10935 10936 Fixed a problem with the internal Owner ID allocation and deallocation 10937 mechanisms for control method execution and recursive method invocation. 10938 This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId" 10939 messages seen on some systems. Recursive method invocation depth is 10940 currently limited to 255. (Alexey Starikovskiy) 10941 10942 Completely eliminated all vestiges of support for the "module-level 10943 executable code" until this support is fully implemented and debugged. 10944 This 10945 should eliminate the NO_RETURN_VALUE exceptions seen during table load on 10946 some systems that invoke this support. 10947 10948 Fixed a problem within the resource manager code where the transaction 10949 flags 10950 for a 64-bit address descriptor were handled incorrectly in the type- 10951 specific flag byte. 10952 10953 Consolidated duplicate code within the address descriptor resource 10954 manager 10955 code, reducing overall subsystem code size. 10956 10957 Fixed a fault when using the AML debugger "disassemble" command to 10958 disassemble individual control methods. 10959 10960 Removed references to the "release_current" directory within the Unix 10961 release package. 10962 10963 Code and Data Size: The current and previous core subsystem library sizes 10964 are shown below. These are the code and data sizes for the acpica.lib 10965 produced by the Microsoft Visual C++ 6.0 compiler. These values do not 10966 include any ACPI driver or OSPM code. The debug version of the code 10967 includes 10968 the debug output trace mechanism and has a much larger code and data 10969 size. 10970 Note that these values will vary depending on the efficiency of the 10971 compiler 10972 and the compiler options used during generation. 10973 10974 Previous Release: 10975 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 10976 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 10977 Current Release: 10978 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 10979 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 10980 10981 10982 2) iASL Compiler/Disassembler: 10983 10984 Implemented an error check for illegal duplicate values in the interrupt 10985 and 10986 dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and 10987 Interrupt(). 10988 10989 Implemented error checking for the Irq() and IrqNoFlags() macros to 10990 detect 10991 too many values in the interrupt list (16 max) and invalid values in the 10992 list (range 0 - 15) 10993 10994 The maximum length string literal within an ASL file is now restricted to 10995 200 characters as per the ACPI specification. 10996 10997 Fixed a fault when using the -ln option (generate namespace listing). 10998 10999 Implemented an error check to determine if a DescriptorName within a 11000 resource descriptor has already been used within the current scope. 11001 11002 ---------------------------------------- 11003 15 August 2005. Summary of changes for version 20050815: 11004 11005 1) ACPI CA Core Subsystem: 11006 11007 Implemented a full bytewise compare to determine if a table load request 11008 is 11009 attempting to load a duplicate table. The compare is performed if the 11010 table 11011 signatures and table lengths match. This will allow different tables with 11012 the same OEM Table ID and revision to be loaded - probably against the 11013 ACPI 11014 specification, but discovered in the field nonetheless. 11015 11016 Added the changes.txt logfile to each of the zipped release packages. 11017 11018 Code and Data Size: Current and previous core subsystem library sizes are 11019 shown below. These are the code and data sizes for the acpica.lib 11020 produced 11021 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11022 any ACPI driver or OSPM code. The debug version of the code includes the 11023 debug output trace mechanism and has a much larger code and data size. 11024 Note 11025 that these values will vary depending on the efficiency of the compiler 11026 and 11027 the compiler options used during generation. 11028 11029 Previous Release: 11030 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 11031 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 11032 Current Release: 11033 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 11034 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 11035 11036 11037 2) iASL Compiler/Disassembler: 11038 11039 Fixed a problem where incorrect AML code could be generated for Package 11040 objects if optimization is disabled (via the -oa switch). 11041 11042 Fixed a problem with where incorrect AML code is generated for variable- 11043 length packages when the package length is not specified and the number 11044 of 11045 initializer values is greater than 255. 11046 11047 11048 ---------------------------------------- 11049 29 July 2005. Summary of changes for version 20050729: 11050 11051 1) ACPI CA Core Subsystem: 11052 11053 Implemented support to ignore an attempt to install/load a particular 11054 ACPI 11055 table more than once. Apparently there exists BIOS code that repeatedly 11056 attempts to load the same SSDT upon certain events. With assistance from 11057 Venkatesh Pallipadi. 11058 11059 Restructured the main interface to the AML parser in order to correctly 11060 handle all exceptional conditions. This will prevent leakage of the 11061 OwnerId 11062 resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on 11063 some 11064 machines. With assistance from Alexey Starikovskiy. 11065 11066 Support for "module level code" has been disabled in this version due to 11067 a 11068 number of issues that have appeared on various machines. The support can 11069 be 11070 enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem 11071 compilation. When the issues are fully resolved, the code will be enabled 11072 by 11073 default again. 11074 11075 Modified the internal functions for debug print support to define the 11076 FunctionName parameter as a (const char *) for compatibility with 11077 compiler 11078 built-in macros such as __FUNCTION__, etc. 11079 11080 Linted the entire ACPICA source tree for both 32-bit and 64-bit. 11081 11082 Implemented support to display an object count summary for the AML 11083 Debugger 11084 commands Object and Methods. 11085 11086 Code and Data Size: Current and previous core subsystem library sizes are 11087 shown below. These are the code and data sizes for the acpica.lib 11088 produced 11089 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11090 any ACPI driver or OSPM code. The debug version of the code includes the 11091 debug output trace mechanism and has a much larger code and data size. 11092 Note 11093 that these values will vary depending on the efficiency of the compiler 11094 and 11095 the compiler options used during generation. 11096 11097 Previous Release: 11098 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 11099 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 11100 Current Release: 11101 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 11102 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 11103 11104 11105 2) iASL Compiler/Disassembler: 11106 11107 Fixed a regression that appeared in the 20050708 version of the compiler 11108 where an error message was inadvertently emitted for invocations of the 11109 _OSI 11110 reserved control method. 11111 11112 ---------------------------------------- 11113 08 July 2005. Summary of changes for version 20050708: 11114 11115 1) ACPI CA Core Subsystem: 11116 11117 The use of the CPU stack in the debug version of the subsystem has been 11118 considerably reduced. Previously, a debug structure was declared in every 11119 function that used the debug macros. This structure has been removed in 11120 favor of declaring the individual elements as parameters to the debug 11121 functions. This reduces the cumulative stack use during nested execution 11122 of 11123 ACPI function calls at the cost of a small increase in the code size of 11124 the 11125 debug version of the subsystem. With assistance from Alexey Starikovskiy 11126 and 11127 Len Brown. 11128 11129 Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent 11130 headers to define a macro that will return the current function name at 11131 runtime (such as __FUNCTION__ or _func_, etc.) The function name is used 11132 by 11133 the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the 11134 compiler-dependent header, the function name is saved on the CPU stack 11135 (one 11136 pointer per function.) This mechanism is used because apparently there 11137 exists no standard ANSI-C defined macro that that returns the function 11138 name. 11139 11140 Redesigned and reimplemented the "Owner ID" mechanism used to track 11141 namespace objects created/deleted by ACPI tables and control method 11142 execution. A bitmap is now used to allocate and free the IDs, thus 11143 solving 11144 the wraparound problem present in the previous implementation. The size 11145 of 11146 the namespace node descriptor was reduced by 2 bytes as a result (Alexey 11147 Starikovskiy). 11148 11149 Removed the UINT32_BIT and UINT16_BIT types that were used for the 11150 bitfield 11151 flag definitions within the headers for the predefined ACPI tables. These 11152 have been replaced by UINT8_BIT in order to increase the code portability 11153 of 11154 the subsystem. If the use of UINT8 remains a problem, we may be forced to 11155 eliminate bitfields entirely because of a lack of portability. 11156 11157 Enhanced the performance of the AcpiUtUpdateObjectReference procedure. 11158 This 11159 is a frequently used function and this improvement increases the 11160 performance 11161 of the entire subsystem (Alexey Starikovskiy). 11162 11163 Fixed several possible memory leaks and the inverse - premature object 11164 deletion (Alexey Starikovskiy). 11165 11166 Code and Data Size: Current and previous core subsystem library sizes are 11167 shown below. These are the code and data sizes for the acpica.lib 11168 produced 11169 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11170 any ACPI driver or OSPM code. The debug version of the code includes the 11171 debug output trace mechanism and has a much larger code and data size. 11172 Note 11173 that these values will vary depending on the efficiency of the compiler 11174 and 11175 the compiler options used during generation. 11176 11177 Previous Release: 11178 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 11179 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 11180 Current Release: 11181 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 11182 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 11183 11184 ---------------------------------------- 11185 24 June 2005. Summary of changes for version 20050624: 11186 11187 1) ACPI CA Core Subsystem: 11188 11189 Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for 11190 the host-defined cache object. This allows the OSL implementation to 11191 define 11192 and type this object in any manner desired, simplifying the OSL 11193 implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for 11194 Linux, and should be defined in the OS-specific header file for other 11195 operating systems as required. 11196 11197 Changed the interface to AcpiOsAcquireObject to directly return the 11198 requested object as the function return (instead of ACPI_STATUS.) This 11199 change was made for performance reasons, since this is the purpose of the 11200 interface in the first place. AcpiOsAcquireObject is now similar to the 11201 AcpiOsAllocate interface. 11202 11203 Implemented a new AML debugger command named Businfo. This command 11204 displays 11205 information about all devices that have an associate _PRT object. The 11206 _ADR, 11207 _HID, _UID, and _CID are displayed for these devices. 11208 11209 Modified the initialization sequence in AcpiInitializeSubsystem to call 11210 the 11211 OSL interface AcpiOslInitialize first, before any local initialization. 11212 This 11213 change was required because the global initialization now calls OSL 11214 interfaces. 11215 11216 Enhanced the Dump command to display the entire contents of Package 11217 objects 11218 (including all sub-objects and their values.) 11219 11220 Restructured the code base to split some files because of size and/or 11221 because the code logically belonged in a separate file. New files are 11222 listed 11223 below. All makefiles and project files included in the ACPI CA release 11224 have 11225 been updated. 11226 utilities/utcache.c /* Local cache interfaces */ 11227 utilities/utmutex.c /* Local mutex support */ 11228 utilities/utstate.c /* State object support */ 11229 interpreter/parser/psloop.c /* Main AML parse loop */ 11230 11231 Code and Data Size: Current and previous core subsystem library sizes are 11232 shown below. These are the code and data sizes for the acpica.lib 11233 produced 11234 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11235 any ACPI driver or OSPM code. The debug version of the code includes the 11236 debug output trace mechanism and has a much larger code and data size. 11237 Note 11238 that these values will vary depending on the efficiency of the compiler 11239 and 11240 the compiler options used during generation. 11241 11242 Previous Release: 11243 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 11244 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 11245 Current Release: 11246 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 11247 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 11248 11249 11250 2) iASL Compiler/Disassembler: 11251 11252 Fixed a regression introduced in version 20050513 where the use of a 11253 Package 11254 object within a Case() statement caused a compile time exception. The 11255 original behavior has been restored (a Match() operator is emitted.) 11256 11257 ---------------------------------------- 11258 17 June 2005. Summary of changes for version 20050617: 11259 11260 1) ACPI CA Core Subsystem: 11261 11262 Moved the object cache operations into the OS interface layer (OSL) to 11263 allow 11264 the host OS to handle these operations if desired (for example, the Linux 11265 OSL will invoke the slab allocator). This support is optional; the 11266 compile 11267 time define ACPI_USE_LOCAL_CACHE may be used to utilize the original 11268 cache 11269 code in the ACPI CA core. The new OSL interfaces are shown below. See 11270 utalloc.c for an example implementation, and acpiosxf.h for the exact 11271 interface definitions. With assistance from Alexey Starikovskiy. 11272 AcpiOsCreateCache 11273 AcpiOsDeleteCache 11274 AcpiOsPurgeCache 11275 AcpiOsAcquireObject 11276 AcpiOsReleaseObject 11277 11278 Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to 11279 return 11280 and restore a flags parameter. This fits better with many OS lock models. 11281 Note: the current execution state (interrupt handler or not) is no longer 11282 passed to these interfaces. If necessary, the OSL must determine this 11283 state 11284 by itself, a simple and fast operation. With assistance from Alexey 11285 Starikovskiy. 11286 11287 Fixed a problem in the ACPI table handling where a valid XSDT was assumed 11288 present if the revision of the RSDP was 2 or greater. According to the 11289 ACPI 11290 specification, the XSDT is optional in all cases, and the table manager 11291 therefore now checks for both an RSDP >=2 and a valid XSDT pointer. 11292 Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs 11293 contain 11294 only the RSDT. 11295 11296 Fixed an interpreter problem with the Mid() operator in the case of an 11297 input 11298 string where the resulting output string is of zero length. It now 11299 correctly 11300 returns a valid, null terminated string object instead of a string object 11301 with a null pointer. 11302 11303 Fixed a problem with the control method argument handling to allow a 11304 store 11305 to an Arg object that already contains an object of type Device. The 11306 Device 11307 object is now correctly overwritten. Previously, an error was returned. 11308 11309 11310 Enhanced the debugger Find command to emit object values in addition to 11311 the 11312 found object pathnames. The output format is the same as the dump 11313 namespace 11314 command. 11315 11316 Enhanced the debugger Set command. It now has the ability to set the 11317 value 11318 of any Named integer object in the namespace (Previously, only method 11319 locals 11320 and args could be set.) 11321 11322 Code and Data Size: Current and previous core subsystem library sizes are 11323 shown below. These are the code and data sizes for the acpica.lib 11324 produced 11325 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11326 any ACPI driver or OSPM code. The debug version of the code includes the 11327 debug output trace mechanism and has a much larger code and data size. 11328 Note 11329 that these values will vary depending on the efficiency of the compiler 11330 and 11331 the compiler options used during generation. 11332 11333 Previous Release: 11334 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 11335 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 11336 Current Release: 11337 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 11338 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 11339 11340 11341 2) iASL Compiler/Disassembler: 11342 11343 Fixed a regression in the disassembler where if/else/while constructs 11344 were 11345 output incorrectly. This problem was introduced in the previous release 11346 (20050526). This problem also affected the single-step disassembly in the 11347 debugger. 11348 11349 Fixed a problem where compiling the reserved _OSI method would randomly 11350 (but 11351 rarely) produce compile errors. 11352 11353 Enhanced the disassembler to emit compilable code in the face of 11354 incorrect 11355 AML resource descriptors. If the optional ResourceSourceIndex is present, 11356 but the ResourceSource is not, do not emit the ResourceSourceIndex in the 11357 disassembly. Otherwise, the resulting code cannot be compiled without 11358 errors. 11359 11360 ---------------------------------------- 11361 26 May 2005. Summary of changes for version 20050526: 11362 11363 1) ACPI CA Core Subsystem: 11364 11365 Implemented support to execute Type 1 and Type 2 AML opcodes appearing at 11366 the module level (not within a control method.) These opcodes are 11367 executed 11368 exactly once at the time the table is loaded. This type of code was legal 11369 up 11370 until the release of ACPI 2.0B (2002) and is now supported within ACPI CA 11371 in 11372 order to provide backwards compatibility with earlier BIOS 11373 implementations. 11374 This eliminates the "Encountered executable code at module level" warning 11375 that was previously generated upon detection of such code. 11376 11377 Fixed a problem in the interpreter where an AE_NOT_FOUND exception could 11378 inadvertently be generated during the lookup of namespace objects in the 11379 second pass parse of ACPI tables and control methods. It appears that 11380 this 11381 problem could occur during the resolution of forward references to 11382 namespace 11383 objects. 11384 11385 Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function, 11386 corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This 11387 allows the deadlock detection debug code to be compiled out in the normal 11388 case, improving mutex performance (and overall subsystem performance) 11389 considerably. 11390 11391 Implemented a handful of miscellaneous fixes for possible memory leaks on 11392 error conditions and error handling control paths. These fixes were 11393 suggested by FreeBSD and the Coverity Prevent source code analysis tool. 11394 11395 Added a check for a null RSDT pointer in AcpiGetFirmwareTable 11396 (tbxfroot.c) 11397 to prevent a fault in this error case. 11398 11399 Code and Data Size: Current and previous core subsystem library sizes are 11400 shown below. These are the code and data sizes for the acpica.lib 11401 produced 11402 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11403 any ACPI driver or OSPM code. The debug version of the code includes the 11404 debug output trace mechanism and has a much larger code and data size. 11405 Note 11406 that these values will vary depending on the efficiency of the compiler 11407 and 11408 the compiler options used during generation. 11409 11410 Previous Release: 11411 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 11412 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 11413 Current Release: 11414 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 11415 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 11416 11417 11418 2) iASL Compiler/Disassembler: 11419 11420 Implemented support to allow Type 1 and Type 2 ASL operators to appear at 11421 the module level (not within a control method.) These operators will be 11422 executed once at the time the table is loaded. This type of code was 11423 legal 11424 up until the release of ACPI 2.0B (2002) and is now supported by the iASL 11425 compiler in order to provide backwards compatibility with earlier BIOS 11426 ASL 11427 code. 11428 11429 The ACPI integer width (specified via the table revision ID or the -r 11430 override, 32 or 64 bits) is now used internally during compile-time 11431 constant 11432 folding to ensure that constants are truncated to 32 bits if necessary. 11433 Previously, the revision ID value was only emitted in the AML table 11434 header. 11435 11436 An error message is now generated for the Mutex and Method operators if 11437 the 11438 SyncLevel parameter is outside the legal range of 0 through 15. 11439 11440 Fixed a problem with the Method operator ParameterTypes list handling 11441 (ACPI 11442 3.0). Previously, more than 2 types or 2 arguments generated a syntax 11443 error. 11444 The actual underlying implementation of method argument typechecking is 11445 still under development, however. 11446 11447 ---------------------------------------- 11448 13 May 2005. Summary of changes for version 20050513: 11449 11450 1) ACPI CA Core Subsystem: 11451 11452 Implemented support for PCI Express root bridges -- added support for 11453 device 11454 PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup. 11455 11456 The interpreter now automatically truncates incoming 64-bit constants to 11457 32 11458 bits if currently executing out of a 32-bit ACPI table (Revision < 2). 11459 This 11460 also affects the iASL compiler constant folding. (Note: as per below, the 11461 iASL compiler no longer allows 64-bit constants within 32-bit tables.) 11462 11463 Fixed a problem where string and buffer objects with "static" pointers 11464 (pointers to initialization data within an ACPI table) were not handled 11465 consistently. The internal object copy operation now always copies the 11466 data 11467 to a newly allocated buffer, regardless of whether the source object is 11468 static or not. 11469 11470 Fixed a problem with the FromBCD operator where an implicit result 11471 conversion was improperly performed while storing the result to the 11472 target 11473 operand. Since this is an "explicit conversion" operator, the implicit 11474 conversion should never be performed on the output. 11475 11476 Fixed a problem with the CopyObject operator where a copy to an existing 11477 named object did not always completely overwrite the existing object 11478 stored 11479 at name. Specifically, a buffer-to-buffer copy did not delete the 11480 existing 11481 buffer. 11482 11483 Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces 11484 and 11485 structs for consistency. 11486 11487 Code and Data Size: Current and previous core subsystem library sizes are 11488 shown below. These are the code and data sizes for the acpica.lib 11489 produced 11490 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11491 any ACPI driver or OSPM code. The debug version of the code includes the 11492 debug output trace mechanism and has a much larger code and data size. 11493 Note 11494 that these values will vary depending on the efficiency of the compiler 11495 and 11496 the compiler options used during generation. 11497 11498 Previous Release: 11499 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 11500 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 11501 Current Release: (Same sizes) 11502 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 11503 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 11504 11505 11506 2) iASL Compiler/Disassembler: 11507 11508 The compiler now emits a warning if an attempt is made to generate a 64- 11509 bit 11510 integer constant from within a 32-bit ACPI table (Revision < 2). The 11511 integer 11512 is truncated to 32 bits. 11513 11514 Fixed a problem with large package objects: if the static length of the 11515 package is greater than 255, the "variable length package" opcode is 11516 emitted. Previously, this caused an error. This requires an update to the 11517 ACPI spec, since it currently (incorrectly) states that packages larger 11518 than 11519 255 elements are not allowed. 11520 11521 The disassembler now correctly handles variable length packages and 11522 packages 11523 larger than 255 elements. 11524 11525 ---------------------------------------- 11526 08 April 2005. Summary of changes for version 20050408: 11527 11528 1) ACPI CA Core Subsystem: 11529 11530 Fixed three cases in the interpreter where an "index" argument to an ASL 11531 function was still (internally) 32 bits instead of the required 64 bits. 11532 This was the Index argument to the Index, Mid, and Match operators. 11533 11534 The "strupr" function is now permanently local (AcpiUtStrupr), since this 11535 is 11536 not a POSIX-defined function and not present in most kernel-level C 11537 libraries. All references to the C library strupr function have been 11538 removed 11539 from the headers. 11540 11541 Completed the deployment of static functions/prototypes. All prototypes 11542 with 11543 the static attribute have been moved from the headers to the owning C 11544 file. 11545 11546 Implemented an extract option (-e) for the AcpiBin utility (AML binary 11547 utility). This option allows the utility to extract individual ACPI 11548 tables 11549 from the output of AcpiDmp. It provides the same functionality of the 11550 acpixtract.pl perl script without the worry of setting the correct perl 11551 options. AcpiBin runs on Windows and has not yet been generated/validated 11552 in 11553 the Linux/Unix environment (but should be soon). 11554 11555 Updated and fixed the table dump option for AcpiBin (-d). This option 11556 converts a single ACPI table to a hex/ascii file, similar to the output 11557 of 11558 AcpiDmp. 11559 11560 Code and Data Size: Current and previous core subsystem library sizes are 11561 shown below. These are the code and data sizes for the acpica.lib 11562 produced 11563 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11564 any ACPI driver or OSPM code. The debug version of the code includes the 11565 debug output trace mechanism and has a much larger code and data size. 11566 Note 11567 that these values will vary depending on the efficiency of the compiler 11568 and 11569 the compiler options used during generation. 11570 11571 Previous Release: 11572 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 11573 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 11574 Current Release: 11575 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 11576 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 11577 11578 11579 2) iASL Compiler/Disassembler: 11580 11581 Disassembler fix: Added a check to ensure that the table length found in 11582 the 11583 ACPI table header within the input file is not longer than the actual 11584 input 11585 file size. This indicates some kind of file or table corruption. 11586 11587 ---------------------------------------- 11588 29 March 2005. Summary of changes for version 20050329: 11589 11590 1) ACPI CA Core Subsystem: 11591 11592 An error is now generated if an attempt is made to create a Buffer Field 11593 of 11594 length zero (A CreateField with a length operand of zero.) 11595 11596 The interpreter now issues a warning whenever executable code at the 11597 module 11598 level is detected during ACPI table load. This will give some idea of the 11599 prevalence of this type of code. 11600 11601 Implemented support for references to named objects (other than control 11602 methods) within package objects. 11603 11604 Enhanced package object output for the debug object. Package objects are 11605 now 11606 completely dumped, showing all elements. 11607 11608 Enhanced miscellaneous object output for the debug object. Any object can 11609 now be written to the debug object (for example, a device object can be 11610 written, and the type of the object will be displayed.) 11611 11612 The "static" qualifier has been added to all local functions across both 11613 the 11614 core subsystem and the iASL compiler. 11615 11616 The number of "long" lines (> 80 chars) within the source has been 11617 significantly reduced, by about 1/3. 11618 11619 Cleaned up all header files to ensure that all CA/iASL functions are 11620 prototyped (even static functions) and the formatting is consistent. 11621 11622 Two new header files have been added, acopcode.h and acnames.h. 11623 11624 Removed several obsolete functions that were no longer used. 11625 11626 Code and Data Size: Current and previous core subsystem library sizes are 11627 shown below. These are the code and data sizes for the acpica.lib 11628 produced 11629 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11630 any ACPI driver or OSPM code. The debug version of the code includes the 11631 debug output trace mechanism and has a much larger code and data size. 11632 Note 11633 that these values will vary depending on the efficiency of the compiler 11634 and 11635 the compiler options used during generation. 11636 11637 Previous Release: 11638 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 11639 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 11640 Current Release: 11641 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 11642 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 11643 11644 11645 11646 2) iASL Compiler/Disassembler: 11647 11648 Fixed a problem with the resource descriptor generation/support. For the 11649 ResourceSourceIndex and the ResourceSource fields, both must be present, 11650 or 11651 both must be not present - can't have one without the other. 11652 11653 The compiler now returns non-zero from the main procedure if any errors 11654 have 11655 occurred during the compilation. 11656 11657 11658 ---------------------------------------- 11659 09 March 2005. Summary of changes for version 20050309: 11660 11661 1) ACPI CA Core Subsystem: 11662 11663 The string-to-buffer implicit conversion code has been modified again 11664 after 11665 a change to the ACPI specification. In order to match the behavior of 11666 the 11667 other major ACPI implementation, the target buffer is no longer truncated 11668 if 11669 the source string is smaller than an existing target buffer. This change 11670 requires an update to the ACPI spec, and should eliminate the recent 11671 AE_AML_BUFFER_LIMIT issues. 11672 11673 The "implicit return" support was rewritten to a new algorithm that 11674 solves 11675 the general case. Rather than attempt to determine when a method is about 11676 to 11677 exit, the result of every ASL operator is saved momentarily until the 11678 very 11679 next ASL operator is executed. Therefore, no matter how the method exits, 11680 there will always be a saved implicit return value. This feature is only 11681 enabled with the AcpiGbl_EnableInterpreterSlack flag, and should 11682 eliminate 11683 AE_AML_NO_RETURN_VALUE errors when enabled. 11684 11685 Implemented implicit conversion support for the predicate (operand) of 11686 the 11687 If, Else, and While operators. String and Buffer arguments are 11688 automatically 11689 converted to Integers. 11690 11691 Changed the string-to-integer conversion behavior to match the new ACPI 11692 errata: "If no integer object exists, a new integer is created. The ASCII 11693 string is interpreted as a hexadecimal constant. Each string character is 11694 interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting 11695 with the first character as the most significant digit, and ending with 11696 the 11697 first non-hexadecimal character or end-of-string." This means that the 11698 first 11699 non-hex character terminates the conversion and this is the code that was 11700 changed. 11701 11702 Fixed a problem where the ObjectType operator would fail (fault) when 11703 used 11704 on an Index of a Package which pointed to a null package element. The 11705 operator now properly returns zero (Uninitialized) in this case. 11706 11707 Fixed a problem where the While operator used excessive memory by not 11708 properly popping the result stack during execution. There was no memory 11709 leak 11710 after execution, however. (Code provided by Valery Podrezov.) 11711 11712 Fixed a problem where references to control methods within Package 11713 objects 11714 caused the method to be invoked, instead of producing a reference object 11715 pointing to the method. 11716 11717 Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree) 11718 to 11719 improve performance and reduce code size. (Code provided by Alexey 11720 Starikovskiy.) 11721 11722 Code and Data Size: Current and previous core subsystem library sizes are 11723 shown below. These are the code and data sizes for the acpica.lib 11724 produced 11725 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11726 any ACPI driver or OSPM code. The debug version of the code includes the 11727 debug output trace mechanism and has a much larger code and data size. 11728 Note 11729 that these values will vary depending on the efficiency of the compiler 11730 and 11731 the compiler options used during generation. 11732 11733 Previous Release: 11734 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 11735 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 11736 Current Release: 11737 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 11738 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 11739 11740 11741 2) iASL Compiler/Disassembler: 11742 11743 Fixed a problem with the Return operator with no arguments. Since the AML 11744 grammar for the byte encoding requires an operand for the Return opcode, 11745 the 11746 compiler now emits a Return(Zero) for this case. An ACPI specification 11747 update has been written for this case. 11748 11749 For tables other than the DSDT, namepath optimization is automatically 11750 disabled. This is because SSDTs can be loaded anywhere in the namespace, 11751 the 11752 compiler has no knowledge of where, and thus cannot optimize namepaths. 11753 11754 Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was 11755 inadvertently omitted from the ACPI specification, and will require an 11756 update to the spec. 11757 11758 The source file scan for ASCII characters is now optional (-a). This 11759 change 11760 was made because some vendors place non-ascii characters within comments. 11761 However, the scan is simply a brute-force byte compare to ensure all 11762 characters in the file are in the range 0x00 to 0x7F. 11763 11764 Fixed a problem with the CondRefOf operator where the compiler was 11765 inappropriately checking for the existence of the target. Since the point 11766 of 11767 the operator is to check for the existence of the target at run-time, the 11768 compiler no longer checks for the target existence. 11769 11770 Fixed a problem where errors generated from the internal AML interpreter 11771 during constant folding were not handled properly, causing a fault. 11772 11773 Fixed a problem with overly aggressive range checking for the Stall 11774 operator. The valid range (max 255) is now only checked if the operand is 11775 of 11776 type Integer. All other operand types cannot be statically checked. 11777 11778 Fixed a problem where control method references within the RefOf, 11779 DeRefOf, 11780 and ObjectType operators were not treated properly. They are now treated 11781 as 11782 actual references, not method invocations. 11783 11784 Fixed and enhanced the "list namespace" option (-ln). This option was 11785 broken 11786 a number of releases ago. 11787 11788 Improved error handling for the Field, IndexField, and BankField 11789 operators. 11790 The compiler now cleanly reports and recovers from errors in the field 11791 component (FieldUnit) list. 11792 11793 Fixed a disassembler problem where the optional ResourceDescriptor fields 11794 TRS and TTP were not always handled correctly. 11795 11796 Disassembler - Comments in output now use "//" instead of "/*" 11797 11798 ---------------------------------------- 11799 28 February 2005. Summary of changes for version 20050228: 11800 11801 1) ACPI CA Core Subsystem: 11802 11803 Fixed a problem where the result of an Index() operator (an object 11804 reference) must increment the reference count on the target object for 11805 the 11806 life of the object reference. 11807 11808 Implemented AML Interpreter and Debugger support for the new ACPI 3.0 11809 Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and 11810 WordSpace 11811 resource descriptors. 11812 11813 Implemented support in the _OSI method for the ACPI 3.0 "Extended Address 11814 Space Descriptor" string, indicating interpreter support for the 11815 descriptors 11816 above. 11817 11818 Implemented header support for the new ACPI 3.0 FADT flag bits. 11819 11820 Implemented header support for the new ACPI 3.0 PCI Express bits for the 11821 PM1 11822 status/enable registers. 11823 11824 Updated header support for the MADT processor local Apic struct and MADT 11825 platform interrupt source struct for new ACPI 3.0 fields. 11826 11827 Implemented header support for the SRAT and SLIT ACPI tables. 11828 11829 Implemented the -s switch in AcpiExec to enable the "InterpreterSlack" 11830 flag 11831 at runtime. 11832 11833 Code and Data Size: Current and previous core subsystem library sizes are 11834 shown below. These are the code and data sizes for the acpica.lib 11835 produced 11836 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11837 any ACPI driver or OSPM code. The debug version of the code includes the 11838 debug output trace mechanism and has a much larger code and data size. 11839 Note 11840 that these values will vary depending on the efficiency of the compiler 11841 and 11842 the compiler options used during generation. 11843 11844 Previous Release: 11845 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 11846 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 11847 Current Release: 11848 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 11849 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 11850 11851 11852 2) iASL Compiler/Disassembler: 11853 11854 Fixed a problem with the internal 64-bit String-to-integer conversion 11855 with 11856 strings less than two characters long. 11857 11858 Fixed a problem with constant folding where the result of the Index() 11859 operator can not be considered a constant. This means that Index() cannot 11860 be 11861 a type3 opcode and this will require an update to the ACPI specification. 11862 11863 Disassembler: Implemented support for the TTP, MTP, and TRS resource 11864 descriptor fields. These fields were inadvertently ignored and not output 11865 in 11866 the disassembly of the resource descriptor. 11867 11868 11869 ---------------------------------------- 11870 11 February 2005. Summary of changes for version 20050211: 11871 11872 1) ACPI CA Core Subsystem: 11873 11874 Implemented ACPI 3.0 support for implicit conversion within the Match() 11875 operator. MatchObjects can now be of type integer, buffer, or string 11876 instead 11877 of just type integer. Package elements are implicitly converted to the 11878 type 11879 of the MatchObject. This change aligns the behavior of Match() with the 11880 behavior of the other logical operators (LLess(), etc.) It also requires 11881 an 11882 errata change to the ACPI specification as this support was intended for 11883 ACPI 3.0, but was inadvertently omitted. 11884 11885 Fixed a problem with the internal implicit "to buffer" conversion. 11886 Strings 11887 that are converted to buffers will cause buffer truncation if the string 11888 is 11889 smaller than the target buffer. Integers that are converted to buffers 11890 will 11891 not cause buffer truncation, only zero extension (both as per the ACPI 11892 spec.) The problem was introduced when code was added to truncate the 11893 buffer, but this should not be performed in all cases, only the string 11894 case. 11895 11896 Fixed a problem with the Buffer and Package operators where the 11897 interpreter 11898 would get confused if two such operators were used as operands to an ASL 11899 operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result 11900 stack was not being popped after the execution of these operators, 11901 resulting 11902 in an AE_NO_RETURN_VALUE exception. 11903 11904 Fixed a problem with constructs of the form Store(Index(...),...). The 11905 reference object returned from Index was inadvertently resolved to an 11906 actual 11907 value. This problem was introduced in version 20050114 when the behavior 11908 of 11909 Store() was modified to restrict the object types that can be used as the 11910 source operand (to match the ACPI specification.) 11911 11912 Reduced excessive stack use within the AcpiGetObjectInfo procedure. 11913 11914 Added a fix to aclinux.h to allow generation of AcpiExec on Linux. 11915 11916 Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct. 11917 11918 Code and Data Size: Current and previous core subsystem library sizes are 11919 shown below. These are the code and data sizes for the acpica.lib 11920 produced 11921 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11922 any ACPI driver or OSPM code. The debug version of the code includes the 11923 debug output trace mechanism and has a much larger code and data size. 11924 Note 11925 that these values will vary depending on the efficiency of the compiler 11926 and 11927 the compiler options used during generation. 11928 11929 Previous Release: 11930 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 11931 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 11932 Current Release: 11933 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 11934 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 11935 11936 11937 2) iASL Compiler/Disassembler: 11938 11939 Fixed a code generation problem in the constant folding optimization code 11940 where incorrect code was generated if a constant was reduced to a buffer 11941 object (i.e., a reduced type 5 opcode.) 11942 11943 Fixed a typechecking problem for the ToBuffer operator. Caused by an 11944 incorrect return type in the internal opcode information table. 11945 11946 ---------------------------------------- 11947 25 January 2005. Summary of changes for version 20050125: 11948 11949 1) ACPI CA Core Subsystem: 11950 11951 Fixed a recently introduced problem with the Global Lock where the 11952 underlying semaphore was not created. This problem was introduced in 11953 version 20050114, and caused an AE_AML_NO_OPERAND exception during an 11954 Acquire() operation on _GL. 11955 11956 The local object cache is now optional, and is disabled by default. Both 11957 AcpiExec and the iASL compiler enable the cache because they run in user 11958 mode and this enhances their performance. #define 11959 ACPI_ENABLE_OBJECT_CACHE 11960 to enable the local cache. 11961 11962 Fixed an issue in the internal function AcpiUtEvaluateObject concerning 11963 the 11964 optional "implicit return" support where an error was returned if no 11965 return 11966 object was expected, but one was implicitly returned. AE_OK is now 11967 returned 11968 in this case and the implicitly returned object is deleted. 11969 AcpiUtEvaluateObject is only occasionally used, and only to execute 11970 reserved 11971 methods such as _STA and _INI where the return type is known up front. 11972 11973 Fixed a few issues with the internal convert-to-integer code. It now 11974 returns 11975 an error if an attempt is made to convert a null string, a string of only 11976 blanks/tabs, or a zero-length buffer. This affects both implicit 11977 conversion 11978 and explicit conversion via the ToInteger() operator. 11979 11980 The internal debug code in AcpiUtAcquireMutex has been commented out. It 11981 is 11982 not needed for normal operation and should increase the performance of 11983 the 11984 entire subsystem. The code remains in case it is needed for debug 11985 purposes 11986 again. 11987 11988 The AcpiExec source and makefile are included in the Unix/Linux package 11989 for 11990 the first time. 11991 11992 Code and Data Size: Current and previous core subsystem library sizes are 11993 shown below. These are the code and data sizes for the acpica.lib 11994 produced 11995 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11996 any ACPI driver or OSPM code. The debug version of the code includes the 11997 debug output trace mechanism and has a much larger code and data size. 11998 Note 11999 that these values will vary depending on the efficiency of the compiler 12000 and 12001 the compiler options used during generation. 12002 12003 Previous Release: 12004 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 12005 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 12006 Current Release: 12007 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 12008 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 12009 12010 2) iASL Compiler/Disassembler: 12011 12012 Switch/Case support: A warning is now issued if the type of the Switch 12013 value 12014 cannot be determined at compile time. For example, Switch(Arg0) will 12015 generate the warning, and the type is assumed to be an integer. As per 12016 the 12017 ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate 12018 the 12019 warning. 12020 12021 Switch/Case support: Implemented support for buffer and string objects as 12022 the switch value. This is an ACPI 3.0 feature, now that LEqual supports 12023 buffers and strings. 12024 12025 Switch/Case support: The emitted code for the LEqual() comparisons now 12026 uses 12027 the switch value as the first operand, not the second. The case value is 12028 now 12029 the second operand, and this allows the case value to be implicitly 12030 converted to the type of the switch value, not the other way around. 12031 12032 Switch/Case support: Temporary variables are now emitted immediately 12033 within 12034 the control method, not at the global level. This means that there are 12035 now 12036 36 temps available per-method, not 36 temps per-module as was the case 12037 with 12038 the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.) 12039 12040 ---------------------------------------- 12041 14 January 2005. Summary of changes for version 20050114: 12042 12043 Added 2005 copyright to all module headers. This affects every module in 12044 the core subsystem, iASL compiler, and the utilities. 12045 12046 1) ACPI CA Core Subsystem: 12047 12048 Fixed an issue with the String-to-Buffer conversion code where the string 12049 null terminator was not included in the buffer after conversion, but 12050 there 12051 is existing ASL that assumes the string null terminator is included. This 12052 is 12053 the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was 12054 introduced in the previous version when the code was updated to correctly 12055 set the converted buffer size as per the ACPI specification. The ACPI 12056 spec 12057 is ambiguous and will be updated to specify that the null terminator must 12058 be 12059 included in the converted buffer. This also affects the ToBuffer() ASL 12060 operator. 12061 12062 Fixed a problem with the Mid() ASL/AML operator where it did not work 12063 correctly on Buffer objects. Newly created sub-buffers were not being 12064 marked 12065 as initialized. 12066 12067 12068 Fixed a problem in AcpiTbFindTable where incorrect string compares were 12069 performed on the OemId and OemTableId table header fields. These fields 12070 are 12071 not null terminated, so strncmp is now used instead of strcmp. 12072 12073 Implemented a restriction on the Store() ASL/AML operator to align the 12074 behavior with the ACPI specification. Previously, any object could be 12075 used 12076 as the source operand. Now, the only objects that may be used are 12077 Integers, 12078 Buffers, Strings, Packages, Object References, and DDB Handles. If 12079 necessary, the original behavior can be restored by enabling the 12080 EnableInterpreterSlack flag. 12081 12082 Enhanced the optional "implicit return" support to allow an implicit 12083 return 12084 value from methods that are invoked externally via the AcpiEvaluateObject 12085 interface. This enables implicit returns from the _STA and _INI methods, 12086 for example. 12087 12088 Changed the Revision() ASL/AML operator to return the current version of 12089 the 12090 AML interpreter, in the YYYYMMDD format. Previously, it incorrectly 12091 returned 12092 the supported ACPI version (This is the function of the _REV method). 12093 12094 Updated the _REV predefined method to return the currently supported 12095 version 12096 of ACPI, now 3. 12097 12098 Implemented batch mode option for the AcpiExec utility (-b). 12099 12100 Code and Data Size: Current and previous core subsystem library sizes are 12101 shown below. These are the code and data sizes for the acpica.lib 12102 produced 12103 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12104 any ACPI driver or OSPM code. The debug version of the code includes the 12105 debug output trace mechanism and has a much larger code and data size. 12106 Note 12107 that these values will vary depending on the efficiency of the compiler 12108 and 12109 the compiler options used during generation. 12110 12111 Previous Release: 12112 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 12113 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 12114 Current Release: 12115 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 12116 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 12117 12118 ---------------------------------------- 12119 10 December 2004. Summary of changes for version 20041210: 12120 12121 ACPI 3.0 support is nearing completion in both the iASL compiler and the 12122 ACPI CA core subsystem. 12123 12124 1) ACPI CA Core Subsystem: 12125 12126 Fixed a problem in the ToDecimalString operator where the resulting 12127 string 12128 length was incorrectly calculated. The length is now calculated exactly, 12129 eliminating incorrect AE_STRING_LIMIT exceptions. 12130 12131 Fixed a problem in the ToHexString operator to allow a maximum 200 12132 character 12133 string to be produced. 12134 12135 Fixed a problem in the internal string-to-buffer and buffer-to-buffer 12136 copy 12137 routine where the length of the resulting buffer was not truncated to the 12138 new size (if the target buffer already existed). 12139 12140 Code and Data Size: Current and previous core subsystem library sizes are 12141 shown below. These are the code and data sizes for the acpica.lib 12142 produced 12143 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12144 any ACPI driver or OSPM code. The debug version of the code includes the 12145 debug output trace mechanism and has a much larger code and data size. 12146 Note 12147 that these values will vary depending on the efficiency of the compiler 12148 and 12149 the compiler options used during generation. 12150 12151 Previous Release: 12152 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 12153 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 12154 Current Release: 12155 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 12156 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 12157 12158 12159 2) iASL Compiler/Disassembler: 12160 12161 Implemented the new ACPI 3.0 resource template macros - DWordSpace, 12162 ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace. 12163 Includes support in the disassembler. 12164 12165 Implemented support for the new (ACPI 3.0) parameter to the Register 12166 macro, 12167 AccessSize. 12168 12169 Fixed a problem where the _HE resource name for the Interrupt macro was 12170 referencing bit 0 instead of bit 1. 12171 12172 Implemented check for maximum 255 interrupts in the Interrupt macro. 12173 12174 Fixed a problem with the predefined resource descriptor names where 12175 incorrect AML code was generated if the offset within the resource buffer 12176 was 0 or 1. The optimizer shortened the AML code to a single byte opcode 12177 but did not update the surrounding package lengths. 12178 12179 Changes to the Dma macro: All channels within the channel list must be 12180 in 12181 the range 0-7. Maximum 8 channels can be specified. BusMaster operand is 12182 optional (default is BusMaster). 12183 12184 Implemented check for maximum 7 data bytes for the VendorShort macro. 12185 12186 The ReadWrite parameter is now optional for the Memory32 and similar 12187 macros. 12188 12189 ---------------------------------------- 12190 03 December 2004. Summary of changes for version 20041203: 12191 12192 1) ACPI CA Core Subsystem: 12193 12194 The low-level field insertion/extraction code (exfldio) has been 12195 completely 12196 rewritten to eliminate unnecessary complexity, bugs, and boundary 12197 conditions. 12198 12199 Fixed a problem in the ToInteger, ToBuffer, ToHexString, and 12200 ToDecimalString 12201 operators where the input operand could be inadvertently deleted if no 12202 conversion was necessary (e.g., if the input to ToInteger was an Integer 12203 object.) 12204 12205 Fixed a problem with the ToDecimalString and ToHexString where an 12206 incorrect 12207 exception code was returned if the resulting string would be > 200 chars. 12208 AE_STRING_LIMIT is now returned. 12209 12210 Fixed a problem with the Concatenate operator where AE_OK was always 12211 returned, even if the operation failed. 12212 12213 Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128 12214 semaphores to be allocated. 12215 12216 Code and Data Size: Current and previous core subsystem library sizes are 12217 shown below. These are the code and data sizes for the acpica.lib 12218 produced 12219 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12220 any ACPI driver or OSPM code. The debug version of the code includes the 12221 debug output trace mechanism and has a much larger code and data size. 12222 Note 12223 that these values will vary depending on the efficiency of the compiler 12224 and 12225 the compiler options used during generation. 12226 12227 Previous Release: 12228 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 12229 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 12230 Current Release: 12231 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 12232 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 12233 12234 12235 2) iASL Compiler/Disassembler: 12236 12237 Fixed typechecking for the ObjectType and SizeOf operators. Problem was 12238 recently introduced in 20041119. 12239 12240 Fixed a problem with the ToUUID macro where the upper nybble of each 12241 buffer 12242 byte was inadvertently set to zero. 12243 12244 ---------------------------------------- 12245 19 November 2004. Summary of changes for version 20041119: 12246 12247 1) ACPI CA Core Subsystem: 12248 12249 Fixed a problem in the internal ConvertToInteger routine where new 12250 integers 12251 were not truncated to 32 bits for 32-bit ACPI tables. This routine 12252 converts 12253 buffers and strings to integers. 12254 12255 Implemented support to store a value to an Index() on a String object. 12256 This 12257 is an ACPI 2.0 feature that had not yet been implemented. 12258 12259 Implemented new behavior for storing objects to individual package 12260 elements 12261 (via the Index() operator). The previous behavior was to invoke the 12262 implicit 12263 conversion rules if an object was already present at the index. The new 12264 behavior is to simply delete any existing object and directly store the 12265 new 12266 object. Although the ACPI specification seems unclear on this subject, 12267 other 12268 ACPI implementations behave in this manner. (This is the root of the 12269 AE_BAD_HEX_CONSTANT issue.) 12270 12271 Modified the RSDP memory scan mechanism to support the extended checksum 12272 for 12273 ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid 12274 RSDP signature is found with a valid checksum. 12275 12276 Code and Data Size: Current and previous core subsystem library sizes are 12277 shown below. These are the code and data sizes for the acpica.lib 12278 produced 12279 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12280 any ACPI driver or OSPM code. The debug version of the code includes the 12281 debug output trace mechanism and has a much larger code and data size. 12282 Note 12283 that these values will vary depending on the efficiency of the compiler 12284 and 12285 the compiler options used during generation. 12286 12287 Previous Release: 12288 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 12289 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 12290 Current Release: 12291 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 12292 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 12293 12294 12295 2) iASL Compiler/Disassembler: 12296 12297 Fixed a missing semicolon in the aslcompiler.y file. 12298 12299 ---------------------------------------- 12300 05 November 2004. Summary of changes for version 20041105: 12301 12302 1) ACPI CA Core Subsystem: 12303 12304 Implemented support for FADT revision 2. This was an interim table 12305 (between 12306 ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register. 12307 12308 Implemented optional support to allow uninitialized LocalX and ArgX 12309 variables in a control method. The variables are initialized to an 12310 Integer 12311 object with a value of zero. This support is enabled by setting the 12312 AcpiGbl_EnableInterpreterSlack flag to TRUE. 12313 12314 Implemented support for Integer objects for the SizeOf operator. Either 12315 4 12316 or 8 is returned, depending on the current integer size (32-bit or 64- 12317 bit, 12318 depending on the parent table revision). 12319 12320 Fixed a problem in the implementation of the SizeOf and ObjectType 12321 operators 12322 where the operand was resolved to a value too early, causing incorrect 12323 return values for some objects. 12324 12325 Fixed some possible memory leaks during exceptional conditions. 12326 12327 Code and Data Size: Current and previous core subsystem library sizes are 12328 shown below. These are the code and data sizes for the acpica.lib 12329 produced 12330 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12331 any ACPI driver or OSPM code. The debug version of the code includes the 12332 debug output trace mechanism and has a much larger code and data size. 12333 Note 12334 that these values will vary depending on the efficiency of the compiler 12335 and 12336 the compiler options used during generation. 12337 12338 Previous Release: 12339 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 12340 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 12341 Current Release: 12342 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 12343 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 12344 12345 12346 2) iASL Compiler/Disassembler: 12347 12348 Implemented support for all ACPI 3.0 reserved names and methods. 12349 12350 Implemented all ACPI 3.0 grammar elements in the front-end, including 12351 support for semicolons. 12352 12353 Implemented the ACPI 3.0 Function() and ToUUID() macros 12354 12355 Fixed a problem in the disassembler where a Scope() operator would not be 12356 emitted properly if the target of the scope was in another table. 12357 12358 ---------------------------------------- 12359 15 October 2004. Summary of changes for version 20041015: 12360 12361 Note: ACPI CA is currently undergoing an in-depth and complete formal 12362 evaluation to test/verify the following areas. Other suggestions are 12363 welcome. This will result in an increase in the frequency of releases and 12364 the number of bug fixes in the next few months. 12365 - Functional tests for all ASL/AML operators 12366 - All implicit/explicit type conversions 12367 - Bit fields and operation regions 12368 - 64-bit math support and 32-bit-only "truncated" math support 12369 - Exceptional conditions, both compiler and interpreter 12370 - Dynamic object deletion and memory leaks 12371 - ACPI 3.0 support when implemented 12372 - External interfaces to the ACPI subsystem 12373 12374 12375 1) ACPI CA Core Subsystem: 12376 12377 Fixed two alignment issues on 64-bit platforms - within debug statements 12378 in 12379 AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the 12380 Address 12381 field within the non-aligned ACPI generic address structure. 12382 12383 Fixed a problem in the Increment and Decrement operators where incorrect 12384 operand resolution could result in the inadvertent modification of the 12385 original integer when the integer is passed into another method as an 12386 argument and the arg is then incremented/decremented. 12387 12388 Fixed a problem in the FromBCD operator where the upper 32-bits of a 64- 12389 bit 12390 BCD number were truncated during conversion. 12391 12392 Fixed a problem in the ToDecimal operator where the length of the 12393 resulting 12394 string could be set incorrectly too long if the input operand was a 12395 Buffer 12396 object. 12397 12398 Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte 12399 (0) 12400 within a buffer would prematurely terminate a compare between buffer 12401 objects. 12402 12403 Added a check for string overflow (>200 characters as per the ACPI 12404 specification) during the Concatenate operator with two string operands. 12405 12406 Code and Data Size: Current and previous core subsystem library sizes are 12407 shown below. These are the code and data sizes for the acpica.lib 12408 produced 12409 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12410 any ACPI driver or OSPM code. The debug version of the code includes the 12411 debug output trace mechanism and has a much larger code and data size. 12412 Note 12413 that these values will vary depending on the efficiency of the compiler 12414 and 12415 the compiler options used during generation. 12416 12417 Previous Release: 12418 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 12419 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 12420 Current Release: 12421 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 12422 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 12423 12424 12425 12426 2) iASL Compiler/Disassembler: 12427 12428 Allow the use of the ObjectType operator on uninitialized Locals and Args 12429 (returns 0 as per the ACPI specification). 12430 12431 Fixed a problem where the compiler would fault if there was a syntax 12432 error 12433 in the FieldName of all of the various CreateXXXField operators. 12434 12435 Disallow the use of lower case letters within the EISAID macro, as per 12436 the 12437 ACPI specification. All EISAID strings must be of the form "UUUNNNN" 12438 Where 12439 U is an uppercase letter and N is a hex digit. 12440 12441 12442 ---------------------------------------- 12443 06 October 2004. Summary of changes for version 20041006: 12444 12445 1) ACPI CA Core Subsystem: 12446 12447 Implemented support for the ACPI 3.0 Timer operator. This ASL function 12448 implements a 64-bit timer with 100 nanosecond granularity. 12449 12450 Defined a new OSL interface, AcpiOsGetTimer. This interface is used to 12451 implement the ACPI 3.0 Timer operator. This allows the host OS to 12452 implement 12453 the timer with the best clock available. Also, it keeps the core 12454 subsystem 12455 out of the clock handling business, since the host OS (usually) performs 12456 this function. 12457 12458 Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write) 12459 functions use a 64-bit address which is part of the packed ACPI Generic 12460 Address Structure. Since the structure is non-aligned, the alignment 12461 macros 12462 are now used to extract the address to a local variable before use. 12463 12464 Fixed a problem where the ToInteger operator assumed all input strings 12465 were 12466 hexadecimal. The operator now handles both decimal strings and hex 12467 strings 12468 (prefixed with "0x"). 12469 12470 Fixed a problem where the string length in the string object created as a 12471 result of the internal ConvertToString procedure could be incorrect. This 12472 potentially affected all implicit conversions and also the 12473 ToDecimalString 12474 and ToHexString operators. 12475 12476 Fixed two problems in the ToString operator. If the length parameter was 12477 zero, an incorrect string object was created and the value of the input 12478 length parameter was inadvertently changed from zero to Ones. 12479 12480 Fixed a problem where the optional ResourceSource string in the 12481 ExtendedIRQ 12482 resource macro was ignored. 12483 12484 Simplified the interfaces to the internal division functions, reducing 12485 code 12486 size and complexity. 12487 12488 Code and Data Size: Current and previous core subsystem library sizes are 12489 shown below. These are the code and data sizes for the acpica.lib 12490 produced 12491 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12492 any ACPI driver or OSPM code. The debug version of the code includes the 12493 debug output trace mechanism and has a much larger code and data size. 12494 Note 12495 that these values will vary depending on the efficiency of the compiler 12496 and 12497 the compiler options used during generation. 12498 12499 Previous Release: 12500 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 12501 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 12502 Current Release: 12503 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 12504 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 12505 12506 12507 2) iASL Compiler/Disassembler: 12508 12509 Implemented support for the ACPI 3.0 Timer operator. 12510 12511 Fixed a problem where the Default() operator was inadvertently ignored in 12512 a 12513 Switch/Case block. This was a problem in the translation of the Switch 12514 statement to If...Else pairs. 12515 12516 Added support to allow a standalone Return operator, with no parentheses 12517 (or 12518 operands). 12519 12520 Fixed a problem with code generation for the ElseIf operator where the 12521 translated Else...If parse tree was improperly constructed leading to the 12522 loss of some code. 12523 12524 ---------------------------------------- 12525 22 September 2004. Summary of changes for version 20040922: 12526 12527 1) ACPI CA Core Subsystem: 12528 12529 Fixed a problem with the implementation of the LNot() operator where 12530 "Ones" 12531 was not returned for the TRUE case. Changed the code to return Ones 12532 instead 12533 of (!Arg) which was usually 1. This change affects iASL constant folding 12534 for 12535 this operator also. 12536 12537 Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was 12538 not 12539 initialized properly -- Now zero the entire buffer in this case where the 12540 buffer already exists. 12541 12542 Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32 12543 Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all 12544 related code considerably. This will require changes/updates to all OS 12545 interface layers (OSLs.) 12546 12547 Implemented a new external interface, AcpiInstallExceptionHandler, to 12548 allow 12549 a system exception handler to be installed. This handler is invoked upon 12550 any 12551 run-time exception that occurs during control method execution. 12552 12553 Added support for the DSDT in AcpiTbFindTable. This allows the 12554 DataTableRegion() operator to access the local copy of the DSDT. 12555 12556 Code and Data Size: Current and previous core subsystem library sizes are 12557 shown below. These are the code and data sizes for the acpica.lib 12558 produced 12559 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12560 any ACPI driver or OSPM code. The debug version of the code includes the 12561 debug output trace mechanism and has a much larger code and data size. 12562 Note 12563 that these values will vary depending on the efficiency of the compiler 12564 and 12565 the compiler options used during generation. 12566 12567 Previous Release: 12568 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 12569 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 12570 Current Release: 12571 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 12572 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 12573 12574 12575 2) iASL Compiler/Disassembler: 12576 12577 Fixed a problem with constant folding and the LNot operator. LNot was 12578 returning 1 in the TRUE case, not Ones as per the ACPI specification. 12579 This 12580 could result in the generation of an incorrect folded/reduced constant. 12581 12582 End-Of-File is now allowed within a "//"-style comment. A parse error no 12583 longer occurs if such a comment is at the very end of the input ASL 12584 source 12585 file. 12586 12587 Implemented the "-r" option to override the Revision in the table header. 12588 The initial use of this option will be to simplify the evaluation of the 12589 AML 12590 interpreter by allowing a single ASL source module to be compiled for 12591 either 12592 32-bit or 64-bit integers. 12593 12594 12595 ---------------------------------------- 12596 27 August 2004. Summary of changes for version 20040827: 12597 12598 1) ACPI CA Core Subsystem: 12599 12600 - Implemented support for implicit object conversion in the non-numeric 12601 logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual, 12602 and 12603 LNotEqual.) Any combination of Integers/Strings/Buffers may now be used; 12604 the second operand is implicitly converted on the fly to match the type 12605 of 12606 the first operand. For example: 12607 12608 LEqual (Source1, Source2) 12609 12610 Source1 and Source2 must each evaluate to an integer, a string, or a 12611 buffer. 12612 The data type of Source1 dictates the required type of Source2. Source2 12613 is 12614 implicitly converted if necessary to match the type of Source1. 12615 12616 - Updated and corrected the behavior of the string conversion support. 12617 The 12618 rules concerning conversion of buffers to strings (according to the ACPI 12619 specification) are as follows: 12620 12621 ToDecimalString - explicit byte-wise conversion of buffer to string of 12622 decimal values (0-255) separated by commas. ToHexString - explicit byte- 12623 wise 12624 conversion of buffer to string of hex values (0-FF) separated by commas. 12625 ToString - explicit byte-wise conversion of buffer to string. Byte-by- 12626 byte 12627 copy with no transform except NULL terminated. Any other implicit buffer- 12628 to- 12629 string conversion - byte-wise conversion of buffer to string of hex 12630 values 12631 (0-FF) separated by spaces. 12632 12633 - Fixed typo in definition of AcpiGbl_EnableInterpreterSlack. 12634 12635 - Fixed a problem in AcpiNsGetPathnameLength where the returned length 12636 was 12637 one byte too short in the case of a node in the root scope. This could 12638 cause a fault during debug output. 12639 12640 - Code and Data Size: Current and previous core subsystem library sizes 12641 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, 11.5K Data, 89.4K Total 12654 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 12655 Current Release: 12656 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 12657 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 12658 12659 12660 2) iASL Compiler/Disassembler: 12661 12662 - Fixed a Linux generation error. 12663 12664 12665 ---------------------------------------- 12666 16 August 2004. Summary of changes for version 20040816: 12667 12668 1) ACPI CA Core Subsystem: 12669 12670 Designed and implemented support within the AML interpreter for the so- 12671 called "implicit return". This support returns the result of the last 12672 ASL 12673 operation within a control method, in the absence of an explicit Return() 12674 operator. A few machines depend on this behavior, even though it is not 12675 explicitly supported by the ASL language. It is optional support that 12676 can 12677 be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag. 12678 12679 Removed support for the PCI_Config address space from the internal low 12680 level 12681 hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This 12682 support was not used internally, and would not work correctly anyway 12683 because 12684 the PCI bus number and segment number were not supported. There are 12685 separate interfaces for PCI configuration space access because of the 12686 unique 12687 interface. 12688 12689 Code and Data Size: Current and previous core subsystem library sizes are 12690 shown below. These are the code and data sizes for the acpica.lib 12691 produced 12692 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12693 any ACPI driver or OSPM code. The debug version of the code includes the 12694 debug output trace mechanism and has a much larger code and data size. 12695 Note 12696 that these values will vary depending on the efficiency of the compiler 12697 and 12698 the compiler options used during generation. 12699 12700 Previous Release: 12701 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 12702 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 12703 Current Release: 12704 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 12705 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 12706 12707 12708 2) iASL Compiler/Disassembler: 12709 12710 Fixed a problem where constants in ASL expressions at the root level (not 12711 within a control method) could be inadvertently truncated during code 12712 generation. This problem was introduced in the 20040715 release. 12713 12714 12715 ---------------------------------------- 12716 15 July 2004. Summary of changes for version 20040715: 12717 12718 1) ACPI CA Core Subsystem: 12719 12720 Restructured the internal HW GPE interfaces to pass/track the current 12721 state 12722 of interrupts (enabled/disabled) in order to avoid possible deadlock and 12723 increase flexibility of the interfaces. 12724 12725 Implemented a "lexicographical compare" for String and Buffer objects 12726 within 12727 the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual - 12728 - 12729 as per further clarification to the ACPI specification. Behavior is 12730 similar 12731 to C library "strcmp". 12732 12733 Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable 12734 external function. In the 32-bit non-debug case, the stack use has been 12735 reduced from 168 bytes to 32 bytes. 12736 12737 Deployed a new run-time configuration flag, 12738 AcpiGbl_EnableInterpreterSlack, 12739 whose purpose is to allow the AML interpreter to forgive certain bad AML 12740 constructs. Default setting is FALSE. 12741 12742 Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field 12743 IO 12744 support code. If enabled, it allows field access to go beyond the end of 12745 a 12746 region definition if the field is within the region length rounded up to 12747 the 12748 next access width boundary (a common coding error.) 12749 12750 Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to 12751 ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also, 12752 these 12753 symbols are lowercased by the latest version of the AcpiSrc tool. 12754 12755 The prototypes for the PCI interfaces in acpiosxf.h have been updated to 12756 rename "Register" to simply "Reg" to prevent certain compilers from 12757 complaining. 12758 12759 Code and Data Size: Current and previous core subsystem library sizes are 12760 shown below. These are the code and data sizes for the acpica.lib 12761 produced 12762 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12763 any ACPI driver or OSPM code. The debug version of the code includes the 12764 debug output trace mechanism and has a much larger code and data size. 12765 Note 12766 that these values will vary depending on the efficiency of the compiler 12767 and 12768 the compiler options used during generation. 12769 12770 Previous Release: 12771 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 12772 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 12773 Current Release: 12774 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 12775 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 12776 12777 12778 2) iASL Compiler/Disassembler: 12779 12780 Implemented full support for Package objects within the Case() operator. 12781 Note: The Break() operator is currently not supported within Case blocks 12782 (TermLists) as there is some question about backward compatibility with 12783 ACPI 12784 1.0 interpreters. 12785 12786 12787 Fixed a problem where complex terms were not supported properly within 12788 the 12789 Switch() operator. 12790 12791 Eliminated extraneous warning for compiler-emitted reserved names of the 12792 form "_T_x". (Used in Switch/Case operators.) 12793 12794 Eliminated optimization messages for "_T_x" objects and small constants 12795 within the DefinitionBlock operator. 12796 12797 12798 ---------------------------------------- 12799 15 June 2004. Summary of changes for version 20040615: 12800 12801 1) ACPI CA Core Subsystem: 12802 12803 Implemented support for Buffer and String objects (as per ACPI 2.0) for 12804 the 12805 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 12806 LLessEqual. 12807 12808 All directory names in the entire source package are lower case, as they 12809 were in earlier releases. 12810 12811 Implemented "Disassemble" command in the AML debugger that will 12812 disassemble 12813 a single control method. 12814 12815 Code and Data Size: Current and previous core subsystem library sizes are 12816 shown below. These are the code and data sizes for the acpica.lib 12817 produced 12818 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12819 any ACPI driver or OSPM code. The debug version of the code includes the 12820 debug output trace mechanism and has a much larger code and data size. 12821 Note 12822 that these values will vary depending on the efficiency of the compiler 12823 and 12824 the compiler options used during generation. 12825 12826 Previous Release: 12827 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 12828 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 12829 12830 Current Release: 12831 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 12832 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 12833 12834 12835 2) iASL Compiler/Disassembler: 12836 12837 Implemented support for Buffer and String objects (as per ACPI 2.0) for 12838 the 12839 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 12840 LLessEqual. 12841 12842 All directory names in the entire source package are lower case, as they 12843 were in earlier releases. 12844 12845 Fixed a fault when using the -g or -d<nofilename> options if the FADT was 12846 not found. 12847 12848 Fixed an issue with the Windows version of the compiler where later 12849 versions 12850 of Windows place the FADT in the registry under the name "FADT" and not 12851 "FACP" as earlier versions did. This applies when using the -g or - 12852 d<nofilename> options. The compiler now looks for both strings as 12853 necessary. 12854 12855 Fixed a problem with compiler namepath optimization where a namepath 12856 within 12857 the Scope() operator could not be optimized if the namepath was a subpath 12858 of 12859 the current scope path. 12860 12861 ---------------------------------------- 12862 27 May 2004. Summary of changes for version 20040527: 12863 12864 1) ACPI CA Core Subsystem: 12865 12866 Completed a new design and implementation for EBDA (Extended BIOS Data 12867 Area) 12868 support in the RSDP scan code. The original code improperly scanned for 12869 the 12870 EBDA by simply scanning from memory location 0 to 0x400. The correct 12871 method 12872 is to first obtain the EBDA pointer from within the BIOS data area, then 12873 scan 1K of memory starting at the EBDA pointer. There appear to be few 12874 if 12875 any machines that place the RSDP in the EBDA, however. 12876 12877 Integrated a fix for a possible fault during evaluation of BufferField 12878 arguments. Obsolete code that was causing the problem was removed. 12879 12880 Found and fixed a problem in the Field Support Code where data could be 12881 corrupted on a bit field read that starts on an aligned boundary but does 12882 not end on an aligned boundary. Merged the read/write "datum length" 12883 calculation code into a common procedure. 12884 12885 Rolled in a couple of changes to the FreeBSD-specific header. 12886 12887 12888 Code and Data Size: Current and previous core subsystem library sizes are 12889 shown below. These are the code and data sizes for the acpica.lib 12890 produced 12891 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12892 any ACPI driver or OSPM code. The debug version of the code includes the 12893 debug output trace mechanism and has a much larger code and data size. 12894 Note 12895 that these values will vary depending on the efficiency of the compiler 12896 and 12897 the compiler options used during generation. 12898 12899 Previous Release: 12900 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 12901 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 12902 Current Release: 12903 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 12904 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 12905 12906 12907 2) iASL Compiler/Disassembler: 12908 12909 Fixed a generation warning produced by some overly-verbose compilers for 12910 a 12911 64-bit constant. 12912 12913 ---------------------------------------- 12914 14 May 2004. Summary of changes for version 20040514: 12915 12916 1) ACPI CA Core Subsystem: 12917 12918 Fixed a problem where hardware GPE enable bits sometimes not set properly 12919 during and after GPE method execution. Result of 04/27 changes. 12920 12921 Removed extra "clear all GPEs" when sleeping/waking. 12922 12923 Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single 12924 AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above 12925 to 12926 the new AcpiEv* calls as appropriate. 12927 12928 ACPI_OS_NAME was removed from the OS-specific headers. The default name 12929 is 12930 now "Microsoft Windows NT" for maximum compatibility. However this can 12931 be 12932 changed by modifying the acconfig.h file. 12933 12934 Allow a single invocation of AcpiInstallNotifyHandler for a handler that 12935 traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag. 12936 12937 Run _INI methods on ThermalZone objects. This is against the ACPI 12938 specification, but there is apparently ASL code in the field that has 12939 these 12940 _INI methods, and apparently "other" AML interpreters execute them. 12941 12942 Performed a full 16/32/64 bit lint that resulted in some small changes. 12943 12944 Added a sleep simulation command to the AML debugger to test sleep code. 12945 12946 Code and Data Size: Current and previous core subsystem library sizes are 12947 shown below. These are the code and data sizes for the acpica.lib 12948 produced 12949 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12950 any ACPI driver or OSPM code. The debug version of the code includes the 12951 debug output trace mechanism and has a much larger code and data size. 12952 Note 12953 that these values will vary depending on the efficiency of the compiler 12954 and 12955 the compiler options used during generation. 12956 12957 Previous Release: 12958 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 12959 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 12960 Current Release: 12961 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 12962 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 12963 12964 ---------------------------------------- 12965 27 April 2004. Summary of changes for version 20040427: 12966 12967 1) ACPI CA Core Subsystem: 12968 12969 Completed a major overhaul of the GPE handling within ACPI CA. There are 12970 now three types of GPEs: wake-only, runtime-only, and combination 12971 wake/run. 12972 The only GPEs allowed to be combination wake/run are for button-style 12973 devices such as a control-method power button, control-method sleep 12974 button, 12975 or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are 12976 not 12977 referenced by any _PRW methods are marked for "runtime" and hardware 12978 enabled. Any GPE that is referenced by a _PRW method is marked for 12979 "wake" 12980 (and disabled at runtime). However, at sleep time, only those GPEs that 12981 have been specifically enabled for wake via the AcpiEnableGpe interface 12982 will 12983 actually be hardware enabled. 12984 12985 A new external interface has been added, AcpiSetGpeType(), that is meant 12986 to 12987 be used by device drivers to force a GPE to a particular type. It will 12988 be 12989 especially useful for the drivers for the button devices mentioned above. 12990 12991 Completed restructuring of the ACPI CA initialization sequence so that 12992 default operation region handlers are installed before GPEs are 12993 initialized 12994 and the _PRW methods are executed. This will prevent errors when the 12995 _PRW 12996 methods attempt to access system memory or I/O space. 12997 12998 GPE enable/disable no longer reads the GPE enable register. We now keep 12999 the 13000 enable info for runtime and wake separate and in the GPE_EVENT_INFO. We 13001 thus no longer depend on the hardware to maintain these bits. 13002 13003 Always clear the wake status and fixed/GPE status bits before sleep, even 13004 for state S5. 13005 13006 Improved the AML debugger output for displaying the GPE blocks and their 13007 current status. 13008 13009 Added new strings for the _OSI method, of the form "Windows 2001 SPx" 13010 where 13011 x = 0,1,2,3,4. 13012 13013 Fixed a problem where the physical address was incorrectly calculated 13014 when 13015 the Load() operator was used to directly load from an Operation Region 13016 (vs. 13017 loading from a Field object.) Also added check for minimum table length 13018 for 13019 this case. 13020 13021 Fix for multiple mutex acquisition. Restore original thread SyncLevel on 13022 mutex release. 13023 13024 Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for 13025 consistency with the other fields returned. 13026 13027 Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such 13028 structure for each GPE in the system, so the size of this structure is 13029 important. 13030 13031 CPU stack requirement reduction: Cleaned up the method execution and 13032 object 13033 evaluation paths so that now a parameter structure is passed, instead of 13034 copying the various method parameters over and over again. 13035 13036 In evregion.c: Correctly exit and reenter the interpreter region if and 13037 only if dispatching an operation region request to a user-installed 13038 handler. 13039 Do not exit/reenter when dispatching to a default handler (e.g., default 13040 system memory or I/O handlers) 13041 13042 13043 Notes for updating drivers for the new GPE support. The following 13044 changes 13045 must be made to ACPI-related device drivers that are attached to one or 13046 more 13047 GPEs: (This information will be added to the ACPI CA Programmer 13048 Reference.) 13049 13050 1) AcpiInstallGpeHandler no longer automatically enables the GPE, you 13051 must 13052 explicitly call AcpiEnableGpe. 13053 2) There is a new interface called AcpiSetGpeType. This should be called 13054 before enabling the GPE. Also, this interface will automatically disable 13055 the GPE if it is currently enabled. 13056 3) AcpiEnableGpe no longer supports a GPE type flag. 13057 13058 Specific drivers that must be changed: 13059 1) EC driver: 13060 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED, 13061 AeGpeHandler, NULL); 13062 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME); 13063 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR); 13064 13065 2) Button Drivers (Power, Lid, Sleep): 13066 Run _PRW method under parent device 13067 If _PRW exists: /* This is a control-method button */ 13068 Extract GPE number and possibly GpeDevice 13069 AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN); 13070 AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR); 13071 13072 For all other devices that have _PRWs, we automatically set the GPE type 13073 to 13074 ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled. 13075 This 13076 must be done on a selective basis, usually requiring some kind of user 13077 app 13078 to allow the user to pick the wake devices. 13079 13080 13081 Code and Data Size: Current and previous core subsystem library sizes are 13082 shown below. These are the code and data sizes for the acpica.lib 13083 produced 13084 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 13085 any ACPI driver or OSPM code. The debug version of the code includes the 13086 debug output trace mechanism and has a much larger code and data size. 13087 Note 13088 that these values will vary depending on the efficiency of the compiler 13089 and 13090 the compiler options used during generation. 13091 13092 Previous Release: 13093 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 13094 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 13095 Current Release: 13096 13097 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 13098 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 13099 13100 13101 13102 ---------------------------------------- 13103 02 April 2004. Summary of changes for version 20040402: 13104 13105 1) ACPI CA Core Subsystem: 13106 13107 Fixed an interpreter problem where an indirect store through an ArgX 13108 parameter was incorrectly applying the "implicit conversion rules" during 13109 the store. From the ACPI specification: "If the target is a method local 13110 or 13111 argument (LocalX or ArgX), no conversion is performed and the result is 13112 stored directly to the target". The new behavior is to disable implicit 13113 conversion during ALL stores to an ArgX. 13114 13115 Changed the behavior of the _PRW method scan to ignore any and all errors 13116 returned by a given _PRW. This prevents the scan from aborting from the 13117 failure of any single _PRW. 13118 13119 Moved the runtime configuration parameters from the global init procedure 13120 to 13121 static variables in acglobal.h. This will allow the host to override the 13122 default values easily. 13123 13124 Code and Data Size: Current and previous core subsystem library sizes are 13125 shown below. These are the code and data sizes for the acpica.lib 13126 produced 13127 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 13128 any ACPI driver or OSPM code. The debug version of the code includes the 13129 debug output trace mechanism and has a much larger code and data size. 13130 Note 13131 that these values will vary depending on the efficiency of the compiler 13132 and 13133 the compiler options used during generation. 13134 13135 Previous Release: 13136 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 13137 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 13138 Current Release: 13139 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 13140 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 13141 13142 13143 2) iASL Compiler/Disassembler: 13144 13145 iASL now fully disassembles SSDTs. However, External() statements are 13146 not 13147 generated automatically for unresolved symbols at this time. This is a 13148 planned feature for future implementation. 13149 13150 Fixed a scoping problem in the disassembler that occurs when the type of 13151 the 13152 target of a Scope() operator is overridden. This problem caused an 13153 incorrectly nested internal namespace to be constructed. 13154 13155 Any warnings or errors that are emitted during disassembly are now 13156 commented 13157 out automatically so that the resulting file can be recompiled without 13158 any 13159 hand editing. 13160 13161 ---------------------------------------- 13162 26 March 2004. Summary of changes for version 20040326: 13163 13164 1) ACPI CA Core Subsystem: 13165 13166 Implemented support for "wake" GPEs via interaction between GPEs and the 13167 _PRW methods. Every GPE that is pointed to by one or more _PRWs is 13168 identified as a WAKE GPE and by default will no longer be enabled at 13169 runtime. Previously, we were blindly enabling all GPEs with a 13170 corresponding 13171 _Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway. 13172 We 13173 believe this has been the cause of thousands of "spurious" GPEs on some 13174 systems. 13175 13176 This new GPE behavior is can be reverted to the original behavior (enable 13177 ALL GPEs at runtime) via a runtime flag. 13178 13179 Fixed a problem where aliased control methods could not access objects 13180 properly. The proper scope within the namespace was not initialized 13181 (transferred to the target of the aliased method) before executing the 13182 target method. 13183 13184 Fixed a potential race condition on internal object deletion on the 13185 return 13186 object in AcpiEvaluateObject. 13187 13188 Integrated a fix for resource descriptors where both _MEM and _MTP were 13189 being extracted instead of just _MEM. (i.e. bitmask was incorrectly too 13190 wide, 0x0F instead of 0x03.) 13191 13192 Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName, 13193 preventing 13194 a 13195 fault in some cases. 13196 13197 Updated Notify() values for debug statements in evmisc.c 13198 13199 Return proper status from AcpiUtMutexInitialize, not just simply AE_OK. 13200 13201 Code and Data Size: Current and previous core subsystem library sizes are 13202 shown below. These are the code and data sizes for the acpica.lib 13203 produced 13204 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 13205 any ACPI driver or OSPM code. The debug version of the code includes the 13206 debug output trace mechanism and has a much larger code and data size. 13207 Note 13208 that these values will vary depending on the efficiency of the compiler 13209 and 13210 the compiler options used during generation. 13211 13212 Previous Release: 13213 13214 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 13215 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 13216 Current Release: 13217 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 13218 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 13219 13220 ---------------------------------------- 13221 11 March 2004. Summary of changes for version 20040311: 13222 13223 1) ACPI CA Core Subsystem: 13224 13225 Fixed a problem where errors occurring during the parse phase of control 13226 method execution did not abort cleanly. For example, objects created and 13227 installed in the namespace were not deleted. This caused all subsequent 13228 invocations of the method to return the AE_ALREADY_EXISTS exception. 13229 13230 Implemented a mechanism to force a control method to "Serialized" 13231 execution 13232 if the method attempts to create namespace objects. (The root of the 13233 AE_ALREADY_EXISTS problem.) 13234 13235 Implemented support for the predefined _OSI "internal" control method. 13236 Initial supported strings are "Linux", "Windows 2000", "Windows 2001", 13237 and 13238 "Windows 2001.1", and can be easily upgraded for new strings as 13239 necessary. 13240 This feature will allow "other" operating systems to execute the fully 13241 tested, "Windows" code path through the ASL code 13242 13243 Global Lock Support: Now allows multiple acquires and releases with any 13244 internal thread. Removed concept of "owning thread" for this special 13245 mutex. 13246 13247 Fixed two functions that were inappropriately declaring large objects on 13248 the 13249 CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage 13250 during 13251 method execution considerably. 13252 13253 Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the 13254 S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT. 13255 13256 Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs 13257 defined on the machine. 13258 13259 Implemented two runtime options: One to force all control method 13260 execution 13261 to "Serialized" to mimic Windows behavior, another to disable _OSI 13262 support 13263 if it causes problems on a given machine. 13264 13265 Code and Data Size: Current and previous core subsystem library sizes are 13266 shown below. These are the code and data sizes for the acpica.lib 13267 produced 13268 by the Microsoft Visual C++ 6.0 compiler, and these values do not include 13269 any ACPI driver or OSPM code. The debug version of the code includes the 13270 debug output trace mechanism and has a much larger code and data size. 13271 Note 13272 that these values will vary depending on the efficiency of the compiler 13273 and 13274 the compiler options used during generation. 13275 13276 Previous Release: 13277 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 13278 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 13279 Current Release: 13280 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 13281 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 13282 13283 2) iASL Compiler/Disassembler: 13284 13285 Fixed an array size problem for FreeBSD that would cause the compiler to 13286 fault. 13287 13288 ---------------------------------------- 13289 20 February 2004. Summary of changes for version 20040220: 13290 13291 13292 1) ACPI CA Core Subsystem: 13293 13294 Implemented execution of _SxD methods for Device objects in the 13295 GetObjectInfo interface. 13296 13297 Fixed calls to _SST method to pass the correct arguments. 13298 13299 Added a call to _SST on wake to restore to "working" state. 13300 13301 Check for End-Of-Buffer failure case in the WalkResources interface. 13302 13303 Integrated fix for 64-bit alignment issue in acglobal.h by moving two 13304 structures to the beginning of the file. 13305 13306 After wake, clear GPE status register(s) before enabling GPEs. 13307 13308 After wake, clear/enable power button. (Perhaps we should clear/enable 13309 all 13310 fixed events upon wake.) 13311 13312 Fixed a couple of possible memory leaks in the Namespace manager. 13313 13314 Integrated latest acnetbsd.h file. 13315 13316 ---------------------------------------- 13317 11 February 2004. Summary of changes for version 20040211: 13318 13319 13320 1) ACPI CA Core Subsystem: 13321 13322 Completed investigation and implementation of the call-by-reference 13323 mechanism for control method arguments. 13324 13325 Fixed a problem where a store of an object into an indexed package could 13326 fail if the store occurs within a different method than the method that 13327 created the package. 13328 13329 Fixed a problem where the ToDecimal operator could return incorrect 13330 results. 13331 13332 Fixed a problem where the CopyObject operator could fail on some of the 13333 more 13334 obscure objects (e.g., Reference objects.) 13335 13336 Improved the output of the Debug object to display buffer, package, and 13337 index objects. 13338 13339 Fixed a problem where constructs of the form "RefOf (ArgX)" did not 13340 return 13341 the expected result. 13342 13343 Added permanent ACPI_REPORT_ERROR macros for all instances of the 13344 ACPI_AML_INTERNAL exception. 13345 13346 Integrated latest version of acfreebsd.h 13347 13348 ---------------------------------------- 13349 16 January 2004. Summary of changes for version 20040116: 13350 13351 The purpose of this release is primarily to update the copyright years in 13352 each module, thus causing a huge number of diffs. There are a few small 13353 functional changes, however. 13354 13355 1) ACPI CA Core Subsystem: 13356 13357 Improved error messages when there is a problem finding one or more of 13358 the 13359 required base ACPI tables 13360 13361 Reintroduced the definition of APIC_HEADER in actbl.h 13362 13363 Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h) 13364 13365 Removed extraneous reference to NewObj in dsmthdat.c 13366 13367 2) iASL compiler 13368 13369 Fixed a problem introduced in December that disabled the correct 13370 disassembly 13371 of Resource Templates 13372 13373 13374 ---------------------------------------- 13375 03 December 2003. Summary of changes for version 20031203: 13376 13377 1) ACPI CA Core Subsystem: 13378 13379 Changed the initialization of Operation Regions during subsystem 13380 init to perform two entire walks of the ACPI namespace; The first 13381 to initialize the regions themselves, the second to execute the 13382 _REG methods. This fixed some interdependencies across _REG 13383 methods found on some machines. 13384 13385 Fixed a problem where a Store(Local0, Local1) could simply update 13386 the object reference count, and not create a new copy of the 13387 object if the Local1 is uninitialized. 13388 13389 Implemented support for the _SST reserved method during sleep 13390 transitions. 13391 13392 Implemented support to clear the SLP_TYP and SLP_EN bits when 13393 waking up, this is apparently required by some machines. 13394 13395 When sleeping, clear the wake status only if SleepState is not S5. 13396 13397 Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect 13398 pointer arithmetic advanced a string pointer too far. 13399 13400 Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer 13401 could be returned if the requested table has not been loaded. 13402 13403 Within the support for IRQ resources, restructured the handling of 13404 the active and edge/level bits. 13405 13406 Fixed a few problems in AcpiPsxExecute() where memory could be 13407 leaked under certain error conditions. 13408 13409 Improved error messages for the cases where the ACPI mode could 13410 not be entered. 13411 13412 Code and Data Size: Current and previous core subsystem library 13413 sizes are shown below. These are the code and data sizes for the 13414 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 13415 these values do not include any ACPI driver or OSPM code. The 13416 debug version of the code includes the debug output trace 13417 mechanism and has a much larger code and data size. Note that 13418 these values will vary depending on the efficiency of the compiler 13419 and the compiler options used during generation. 13420 13421 Previous Release (20031029): 13422 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 13423 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 13424 Current Release: 13425 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 13426 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 13427 13428 2) iASL Compiler/Disassembler: 13429 13430 Implemented a fix for the iASL disassembler where a bad index was 13431 generated. This was most noticeable on 64-bit platforms 13432 13433 13434 ---------------------------------------- 13435 29 October 2003. Summary of changes for version 20031029: 13436 13437 1) ACPI CA Core Subsystem: 13438 13439 13440 Fixed a problem where a level-triggered GPE with an associated 13441 _Lxx control method was incorrectly cleared twice. 13442 13443 Fixed a problem with the Field support code where an access can 13444 occur beyond the end-of-region if the field is non-aligned but 13445 extends to the very end of the parent region (resulted in an 13446 AE_AML_REGION_LIMIT exception.) 13447 13448 Fixed a problem with ACPI Fixed Events where an RT Clock handler 13449 would not get invoked on an RTC event. The RTC event bitmasks for 13450 the PM1 registers were not being initialized properly. 13451 13452 Implemented support for executing _STA and _INI methods for 13453 Processor objects. Although this is currently not part of the 13454 ACPI specification, there is existing ASL code that depends on the 13455 init-time execution of these methods. 13456 13457 Implemented and deployed a GetDescriptorName function to decode 13458 the various types of internal descriptors. Guards against null 13459 descriptors during debug output also. 13460 13461 Implemented and deployed a GetNodeName function to extract the 4- 13462 character namespace node name. This function simplifies the debug 13463 and error output, as well as guarding against null pointers during 13464 output. 13465 13466 Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to 13467 simplify the debug and error output of 64-bit integers. This 13468 macro replaces the HIDWORD and LODWORD macros for dumping these 13469 integers. 13470 13471 Updated the implementation of the Stall() operator to only call 13472 AcpiOsStall(), and also return an error if the operand is larger 13473 than 255. This preserves the required behavior of not 13474 relinquishing the processor, as would happen if AcpiOsSleep() was 13475 called for "long stalls". 13476 13477 Constructs of the form "Store(LocalX,LocalX)" where LocalX is not 13478 initialized are now treated as NOOPs. 13479 13480 Cleaned up a handful of warnings during 64-bit generation. 13481 13482 Fixed a reported error where and incorrect GPE number was passed 13483 to the GPE dispatch handler. This value is only used for error 13484 output, however. Used this opportunity to clean up and streamline 13485 the GPE dispatch code. 13486 13487 Code and Data Size: Current and previous core subsystem library 13488 sizes are shown below. These are the code and data sizes for the 13489 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 13490 these values do not include any ACPI driver or OSPM code. The 13491 13492 debug version of the code includes the debug output trace 13493 mechanism and has a much larger code and data size. Note that 13494 these values will vary depending on the efficiency of the compiler 13495 and the compiler options used during generation. 13496 13497 Previous Release (20031002): 13498 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 13499 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 13500 Current Release: 13501 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 13502 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 13503 13504 13505 2) iASL Compiler/Disassembler: 13506 13507 Updated the iASL compiler to return an error if the operand to the 13508 Stall() operator is larger than 255. 13509 13510 13511 ---------------------------------------- 13512 02 October 2003. Summary of changes for version 20031002: 13513 13514 13515 1) ACPI CA Core Subsystem: 13516 13517 Fixed a problem with Index Fields where the index was not 13518 incremented for fields that require multiple writes to the 13519 index/data registers (Fields that are wider than the data 13520 register.) 13521 13522 Fixed a problem with all Field objects where a write could go 13523 beyond the end-of-field if the field was larger than the access 13524 granularity and therefore required multiple writes to complete the 13525 request. An extra write beyond the end of the field could happen 13526 inadvertently. 13527 13528 Fixed a problem with Index Fields where a BUFFER_OVERFLOW error 13529 would incorrectly be returned if the width of the Data Register 13530 was larger than the specified field access width. 13531 13532 Completed fixes for LoadTable() and Unload() and verified their 13533 operation. Implemented full support for the "DdbHandle" object 13534 throughout the ACPI CA subsystem. 13535 13536 Implemented full support for the MADT and ECDT tables in the ACPI 13537 CA header files. Even though these tables are not directly 13538 consumed by ACPI CA, the header definitions are useful for ACPI 13539 device drivers. 13540 13541 Integrated resource descriptor fixes posted to the Linux ACPI 13542 list. This included checks for minimum descriptor length, and 13543 support for trailing NULL strings within descriptors that have 13544 optional string elements. 13545 13546 Code and Data Size: Current and previous core subsystem library 13547 sizes are shown below. These are the code and data sizes for the 13548 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 13549 these values do not include any ACPI driver or OSPM code. The 13550 debug version of the code includes the debug output trace 13551 mechanism and has a much larger code and data size. Note that 13552 these values will vary depending on the efficiency of the compiler 13553 and the compiler options used during generation. 13554 13555 Previous Release (20030918): 13556 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 13557 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 13558 Current Release: 13559 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 13560 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 13561 13562 13563 2) iASL Compiler: 13564 13565 Implemented detection of non-ASCII characters within the input 13566 source ASL file. This catches attempts to compile binary (AML) 13567 files early in the compile, with an informative error message. 13568 13569 Fixed a problem where the disassembler would fault if the output 13570 filename could not be generated or if the output file could not be 13571 opened. 13572 13573 ---------------------------------------- 13574 18 September 2003. Summary of changes for version 20030918: 13575 13576 13577 1) ACPI CA Core Subsystem: 13578 13579 Found and fixed a longstanding problem with the late execution of 13580 the various deferred AML opcodes (such as Operation Regions, 13581 Buffer Fields, Buffers, and Packages). If the name string 13582 specified for the name of the new object placed the object in a 13583 scope other than the current scope, the initialization/execution 13584 of the opcode failed. The solution to this problem was to 13585 implement a mechanism where the late execution of such opcodes 13586 does not attempt to lookup/create the name a second time in an 13587 incorrect scope. This fixes the "region size computed 13588 incorrectly" problem. 13589 13590 Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a 13591 Global Lock AE_BAD_PARAMETER error. 13592 13593 Fixed several 64-bit issues with prototypes, casting and data 13594 types. 13595 13596 Removed duplicate prototype from acdisasm.h 13597 13598 Fixed an issue involving EC Operation Region Detach (Shaohua Li) 13599 13600 Code and Data Size: Current and previous core subsystem library 13601 sizes are shown below. These are the code and data sizes for the 13602 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 13603 these values do not include any ACPI driver or OSPM code. The 13604 debug version of the code includes the debug output trace 13605 mechanism and has a much larger code and data size. Note that 13606 these values will vary depending on the efficiency of the compiler 13607 and the compiler options used during generation. 13608 13609 Previous Release: 13610 13611 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 13612 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 13613 Current Release: 13614 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 13615 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 13616 13617 13618 2) Linux: 13619 13620 Fixed the AcpiOsSleep implementation in osunixxf.c to pass the 13621 correct sleep time in seconds. 13622 13623 ---------------------------------------- 13624 14 July 2003. Summary of changes for version 20030619: 13625 13626 1) ACPI CA Core Subsystem: 13627 13628 Parse SSDTs in order discovered, as opposed to reverse order 13629 (Hrvoje Habjanic) 13630 13631 Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas 13632 Klausner, 13633 Nate Lawson) 13634 13635 13636 2) Linux: 13637 13638 Dynamically allocate SDT list (suggested by Andi Kleen) 13639 13640 proc function return value cleanups (Andi Kleen) 13641 13642 Correctly handle NMI watchdog during long stalls (Andrew Morton) 13643 13644 Make it so acpismp=force works (reported by Andrew Morton) 13645 13646 13647 ---------------------------------------- 13648 19 June 2003. Summary of changes for version 20030619: 13649 13650 1) ACPI CA Core Subsystem: 13651 13652 Fix To/FromBCD, eliminating the need for an arch-specific #define. 13653 13654 Do not acquire a semaphore in the S5 shutdown path. 13655 13656 Fix ex_digits_needed for 0. (Takayoshi Kochi) 13657 13658 Fix sleep/stall code reversal. (Andi Kleen) 13659 13660 Revert a change having to do with control method calling 13661 semantics. 13662 13663 2) Linux: 13664 13665 acpiphp update (Takayoshi Kochi) 13666 13667 Export acpi_disabled for sonypi (Stelian Pop) 13668 13669 Mention acpismp=force in config help 13670 13671 Re-add acpitable.c and acpismp=force. This improves backwards 13672 13673 compatibility and also cleans up the code to a significant degree. 13674 13675 Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge) 13676 13677 ---------------------------------------- 13678 22 May 2003. Summary of changes for version 20030522: 13679 13680 1) ACPI CA Core Subsystem: 13681 13682 Found and fixed a reported problem where an AE_NOT_FOUND error 13683 occurred occasionally during _BST evaluation. This turned out to 13684 be an Owner ID allocation issue where a called method did not get 13685 a new ID assigned to it. Eventually, (after 64k calls), the Owner 13686 ID UINT16 would wraparound so that the ID would be the same as the 13687 caller's and the called method would delete the caller's 13688 namespace. 13689 13690 Implemented extended error reporting for control methods that are 13691 aborted due to a run-time exception. Output includes the exact 13692 AML instruction that caused the method abort, a dump of the method 13693 locals and arguments at the time of the abort, and a trace of all 13694 nested control method calls. 13695 13696 Modified the interpreter to allow the creation of buffers of zero 13697 length from the AML code. Implemented new code to ensure that no 13698 attempt is made to actually allocate a memory buffer (of length 13699 zero) - instead, a simple buffer object with a NULL buffer pointer 13700 and length zero is created. A warning is no longer issued when 13701 the AML attempts to create a zero-length buffer. 13702 13703 Implemented a workaround for the "leading asterisk issue" in 13704 _HIDs, _UIDs, and _CIDs in the AML interpreter. One leading 13705 asterisk is automatically removed if present in any HID, UID, or 13706 CID strings. The iASL compiler will still flag this asterisk as 13707 an error, however. 13708 13709 Implemented full support for _CID methods that return a package of 13710 multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface 13711 now additionally returns a device _CID list if present. This 13712 required a change to the external interface in order to pass an 13713 ACPI_BUFFER object as a parameter since the _CID list is of 13714 variable length. 13715 13716 Fixed a problem with the new AE_SAME_HANDLER exception where 13717 handler initialization code did not know about this exception. 13718 13719 Code and Data Size: Current and previous core subsystem library 13720 sizes are shown below. These are the code and data sizes for the 13721 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 13722 these values do not include any ACPI driver or OSPM code. The 13723 debug version of the code includes the debug output trace 13724 mechanism and has a much larger code and data size. Note that 13725 these values will vary depending on the efficiency of the compiler 13726 and the compiler options used during generation. 13727 13728 Previous Release (20030509): 13729 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 13730 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 13731 Current Release: 13732 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 13733 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 13734 13735 13736 2) Linux: 13737 13738 Fixed a bug in which we would reinitialize the ACPI interrupt 13739 after it was already working, thus disabling all ACPI and the IRQs 13740 for any other device sharing the interrupt. (Thanks to Stian 13741 Jordet) 13742 13743 Toshiba driver update (John Belmonte) 13744 13745 Return only 0 or 1 for our interrupt handler status (Andrew 13746 Morton) 13747 13748 13749 3) iASL Compiler: 13750 13751 Fixed a reported problem where multiple (nested) ElseIf() 13752 statements were not handled correctly by the compiler, resulting 13753 in incorrect warnings and incorrect AML code. This was a problem 13754 in both the ASL parser and the code generator. 13755 13756 13757 4) Documentation: 13758 13759 Added changes to existing interfaces, new exception codes, and new 13760 text concerning reference count object management versus garbage 13761 collection. 13762 13763 ---------------------------------------- 13764 09 May 2003. Summary of changes for version 20030509. 13765 13766 13767 1) ACPI CA Core Subsystem: 13768 13769 Changed the subsystem initialization sequence to hold off 13770 installation of address space handlers until the hardware has been 13771 initialized and the system has entered ACPI mode. This is because 13772 the installation of space handlers can cause _REG methods to be 13773 run. Previously, the _REG methods could potentially be run before 13774 ACPI mode was enabled. 13775 13776 Fixed some memory leak issues related to address space handler and 13777 notify handler installation. There were some problems with the 13778 reference count mechanism caused by the fact that the handler 13779 objects are shared across several namespace objects. 13780 13781 Fixed a reported problem where reference counts within the 13782 namespace were not properly updated when named objects created by 13783 method execution were deleted. 13784 13785 Fixed a reported problem where multiple SSDTs caused a deletion 13786 issue during subsystem termination. Restructured the table data 13787 structures to simplify the linked lists and the related code. 13788 13789 Fixed a problem where the table ID associated with secondary 13790 tables (SSDTs) was not being propagated into the namespace objects 13791 created by those tables. This would only present a problem for 13792 tables that are unloaded at run-time, however. 13793 13794 Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE 13795 type as the length parameter (instead of UINT32). 13796 13797 Solved a long-standing problem where an ALREADY_EXISTS error 13798 appears on various systems. This problem could happen when there 13799 are multiple PCI_Config operation regions under a single PCI root 13800 bus. This doesn't happen very frequently, but there are some 13801 systems that do this in the ASL. 13802 13803 Fixed a reported problem where the internal DeleteNode function 13804 was incorrectly handling the case where a namespace node was the 13805 first in the parent's child list, and had additional peers (not 13806 the only child, but first in the list of children.) 13807 13808 Code and Data Size: Current core subsystem library sizes are shown 13809 below. These are the code and data sizes for the acpica.lib 13810 produced by the Microsoft Visual C++ 6.0 compiler, and these 13811 values do not include any ACPI driver or OSPM code. The debug 13812 version of the code includes the debug output trace mechanism and 13813 has a much larger code and data size. Note that these values will 13814 vary depending on the efficiency of the compiler and the compiler 13815 options used during generation. 13816 13817 Previous Release 13818 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 13819 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 13820 Current Release: 13821 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 13822 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 13823 13824 13825 2) Linux: 13826 13827 Allow ":" in OS override string (Ducrot Bruno) 13828 13829 Kobject fix (Greg KH) 13830 13831 13832 3 iASL Compiler/Disassembler: 13833 13834 Fixed a problem in the generation of the C source code files (AML 13835 is emitted in C source statements for BIOS inclusion) where the 13836 Ascii dump that appears within a C comment at the end of each line 13837 could cause a compile time error if the AML sequence happens to 13838 have an open comment or close comment sequence embedded. 13839 13840 13841 ---------------------------------------- 13842 24 April 2003. Summary of changes for version 20030424. 13843 13844 13845 1) ACPI CA Core Subsystem: 13846 13847 Support for big-endian systems has been implemented. Most of the 13848 support has been invisibly added behind big-endian versions of the 13849 ACPI_MOVE_* macros. 13850 13851 Fixed a problem in AcpiHwDisableGpeBlock() and 13852 AcpiHwClearGpeBlock() where an incorrect offset was passed to the 13853 low level hardware write routine. The offset parameter was 13854 actually eliminated from the low level read/write routines because 13855 they had become obsolete. 13856 13857 Fixed a problem where a handler object was deleted twice during 13858 the removal of a fixed event handler. 13859 13860 13861 2) Linux: 13862 13863 A fix for SMP systems with link devices was contributed by 13864 13865 Compaq's Dan Zink. 13866 13867 (2.5) Return whether we handled the interrupt in our IRQ handler. 13868 (Linux ISRs no longer return void, so we can propagate the handler 13869 return value from the ACPI CA core back to the OS.) 13870 13871 13872 13873 3) Documentation: 13874 13875 The ACPI CA Programmer Reference has been updated to reflect new 13876 interfaces and changes to existing interfaces. 13877 13878 ---------------------------------------- 13879 28 March 2003. Summary of changes for version 20030328. 13880 13881 1) ACPI CA Core Subsystem: 13882 13883 The GPE Block Device support has been completed. New interfaces 13884 are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event 13885 interfaces (enable, disable, clear, getstatus) have been split 13886 into separate interfaces for Fixed Events and General Purpose 13887 Events (GPEs) in order to support GPE Block Devices properly. 13888 13889 Fixed a problem where the error message "Failed to acquire 13890 semaphore" would appear during operations on the embedded 13891 controller (EC). 13892 13893 Code and Data Size: Current core subsystem library sizes are shown 13894 below. These are the code and data sizes for the acpica.lib 13895 produced by the Microsoft Visual C++ 6.0 compiler, and these 13896 values do not include any ACPI driver or OSPM code. The debug 13897 version of the code includes the debug output trace mechanism and 13898 has a much larger code and data size. Note that these values will 13899 vary depending on the efficiency of the compiler and the compiler 13900 options used during generation. 13901 13902 Previous Release 13903 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 13904 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 13905 Current Release: 13906 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 13907 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 13908 13909 13910 ---------------------------------------- 13911 28 February 2003. Summary of changes for version 20030228. 13912 13913 13914 1) ACPI CA Core Subsystem: 13915 13916 The GPE handling and dispatch code has been completely overhauled 13917 in preparation for support of GPE Block Devices (ID ACPI0006). 13918 This affects internal data structures and code only; there should 13919 be no differences visible externally. One new file has been 13920 added, evgpeblk.c 13921 13922 The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only 13923 fields that are used to determine the GPE block lengths. The 13924 REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address 13925 structures are ignored. This is per the ACPI specification but it 13926 isn't very clear. The full 256 Block 0/1 GPEs are now supported 13927 (the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128). 13928 13929 In the SCI interrupt handler, removed the read of the PM1_CONTROL 13930 register to look at the SCI_EN bit. On some machines, this read 13931 causes an SMI event and greatly slows down SCI events. (This may 13932 in fact be the cause of slow battery status response on some 13933 systems.) 13934 13935 Fixed a problem where a store of a NULL string to a package object 13936 could cause the premature deletion of the object. This was seen 13937 during execution of the battery _BIF method on some systems, 13938 resulting in no battery data being returned. 13939 13940 Added AcpiWalkResources interface to simplify parsing of resource 13941 lists. 13942 13943 Code and Data Size: Current core subsystem library sizes are shown 13944 below. These are the code and data sizes for the acpica.lib 13945 produced by the Microsoft Visual C++ 6.0 compiler, and these 13946 values do not include any ACPI driver or OSPM code. The debug 13947 version of the code includes the debug output trace mechanism and 13948 has a much larger code and data size. Note that these values will 13949 vary depending on the efficiency of the compiler and the compiler 13950 options used during generation. 13951 13952 Previous Release 13953 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 13954 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 13955 Current Release: 13956 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 13957 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 13958 13959 13960 2) Linux 13961 13962 S3 fixes (Ole Rohne) 13963 13964 Update ACPI PHP driver with to use new acpi_walk_resource API 13965 (Bjorn Helgaas) 13966 13967 Add S4BIOS support (Pavel Machek) 13968 13969 Map in entire table before performing checksum (John Stultz) 13970 13971 Expand the mem= cmdline to allow the specification of reserved and 13972 ACPI DATA blocks (Pavel Machek) 13973 13974 Never use ACPI on VISWS 13975 13976 Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez) 13977 13978 Revert a change that allowed P_BLK lengths to be 4 or 5. This is 13979 causing us to think that some systems support C2 when they really 13980 don't. 13981 13982 Do not count processor objects for non-present CPUs (Thanks to 13983 Dominik Brodowski) 13984 13985 13986 3) iASL Compiler: 13987 13988 Fixed a problem where ASL include files could not be found and 13989 opened. 13990 13991 Added support for the _PDC reserved name. 13992 13993 13994 ---------------------------------------- 13995 22 January 2003. Summary of changes for version 20030122. 13996 13997 13998 1) ACPI CA Core Subsystem: 13999 14000 Added a check for constructs of the form: Store (Local0, Local0) 14001 where Local0 is not initialized. Apparently, some BIOS 14002 programmers believe that this is a NOOP. Since this store doesn't 14003 do anything anyway, the new prototype behavior will ignore this 14004 error. This is a case where we can relax the strict checking in 14005 the interpreter in the name of compatibility. 14006 14007 14008 2) Linux 14009 14010 The AcpiSrc Source Conversion Utility has been released with the 14011 Linux package for the first time. This is the utility that is 14012 used to convert the ACPI CA base source code to the Linux version. 14013 14014 (Both) Handle P_BLK lengths shorter than 6 more gracefully 14015 14016 (Both) Move more headers to include/acpi, and delete an unused 14017 header. 14018 14019 (Both) Move drivers/acpi/include directory to include/acpi 14020 14021 (Both) Boot functions don't use cmdline, so don't pass it around 14022 14023 (Both) Remove include of unused header (Adrian Bunk) 14024 14025 (Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since 14026 the 14027 former now also includes the latter, acpiphp.h only needs the one, 14028 now. 14029 14030 (2.5) Make it possible to select method of bios restoring after S3 14031 resume. [=> no more ugly ifdefs] (Pavel Machek) 14032 14033 (2.5) Make proc write interfaces work (Pavel Machek) 14034 14035 (2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski) 14036 14037 (2.5) Break out ACPI Perf code into its own module, under cpufreq 14038 (Dominik Brodowski) 14039 14040 (2.4) S4BIOS support (Ducrot Bruno) 14041 14042 (2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio 14043 Visinoni) 14044 14045 14046 3) iASL Compiler: 14047 14048 Added support to disassemble SSDT and PSDTs. 14049 14050 Implemented support to obtain SSDTs from the Windows registry if 14051 available. 14052 14053 14054 ---------------------------------------- 14055 09 January 2003. Summary of changes for version 20030109. 14056 14057 1) ACPI CA Core Subsystem: 14058 14059 Changed the behavior of the internal Buffer-to-String conversion 14060 function. The current ACPI specification states that the contents 14061 of the buffer are "converted to a string of two-character 14062 hexadecimal numbers, each separated by a space". Unfortunately, 14063 this definition is not backwards compatible with existing ACPI 1.0 14064 implementations (although the behavior was not defined in the ACPI 14065 1.0 specification). The new behavior simply copies data from the 14066 buffer to the string until a null character is found or the end of 14067 the buffer is reached. The new String object is always null 14068 terminated. This problem was seen during the generation of _BIF 14069 battery data where incorrect strings were returned for battery 14070 type, etc. This will also require an errata to the ACPI 14071 specification. 14072 14073 Renamed all instances of NATIVE_UINT and NATIVE_INT to 14074 ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively. 14075 14076 Copyright in all module headers (both Linux and non-Linux) has be 14077 updated to 2003. 14078 14079 Code and Data Size: Current core subsystem library sizes are shown 14080 below. These are the code and data sizes for the acpica.lib 14081 produced by the Microsoft Visual C++ 6.0 compiler, and these 14082 values do not include any ACPI driver or OSPM code. The debug 14083 version of the code includes the debug output trace mechanism and 14084 has a much larger code and data size. Note that these values will 14085 vary depending on the efficiency of the compiler and the compiler 14086 options used during generation. 14087 14088 Previous Release 14089 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 14090 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 14091 Current Release: 14092 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 14093 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 14094 14095 14096 2) Linux 14097 14098 Fixed an oops on module insertion/removal (Matthew Tippett) 14099 14100 (2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante) 14101 14102 (2.5) Replace pr_debug (Randy Dunlap) 14103 14104 (2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski) 14105 14106 (Both) Eliminate spawning of thread from timer callback, in favor 14107 of schedule_work() 14108 14109 (Both) Show Lid status in /proc (Zdenek OGAR Skalak) 14110 14111 (Both) Added define for Fixed Function HW region (Matthew Wilcox) 14112 14113 (Both) Add missing statics to button.c (Pavel Machek) 14114 14115 Several changes have been made to the source code translation 14116 utility that generates the Linux Code in order to make the code 14117 more "Linux-like": 14118 14119 All typedefs on structs and unions have been removed in keeping 14120 with the Linux coding style. 14121 14122 Removed the non-Linux SourceSafe module revision number from each 14123 module header. 14124 14125 Completed major overhaul of symbols to be lowercased for linux. 14126 Doubled the number of symbols that are lowercased. 14127 14128 Fixed a problem where identifiers within procedure headers and 14129 within quotes were not fully lower cased (they were left with a 14130 starting capital.) 14131 14132 Some C macros whose only purpose is to allow the generation of 16- 14133 bit code are now completely removed in the Linux code, increasing 14134 readability and maintainability. 14135 14136 ---------------------------------------- 14137 14138 12 December 2002. Summary of changes for version 20021212. 14139 14140 14141 1) ACPI CA Core Subsystem: 14142 14143 Fixed a problem where the creation of a zero-length AML Buffer 14144 would cause a fault. 14145 14146 Fixed a problem where a Buffer object that pointed to a static AML 14147 buffer (in an ACPI table) could inadvertently be deleted, causing 14148 memory corruption. 14149 14150 Fixed a problem where a user buffer (passed in to the external 14151 ACPI CA interfaces) could be overwritten if the buffer was too 14152 small to complete the operation, causing memory corruption. 14153 14154 Fixed a problem in the Buffer-to-String conversion code where a 14155 string of length one was always returned, regardless of the size 14156 of the input Buffer object. 14157 14158 Removed the NATIVE_CHAR data type across the entire source due to 14159 lack of need and lack of consistent use. 14160 14161 Code and Data Size: Current core subsystem library sizes are shown 14162 below. These are the code and data sizes for the acpica.lib 14163 produced by the Microsoft Visual C++ 6.0 compiler, and these 14164 values do not include any ACPI driver or OSPM code. The debug 14165 version of the code includes the debug output trace mechanism and 14166 has a much larger code and data size. Note that these values will 14167 vary depending on the efficiency of the compiler and the compiler 14168 options used during generation. 14169 14170 Previous Release 14171 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 14172 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 14173 Current Release: 14174 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 14175 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 14176 14177 14178 ---------------------------------------- 14179 05 December 2002. Summary of changes for version 20021205. 14180 14181 1) ACPI CA Core Subsystem: 14182 14183 Fixed a problem where a store to a String or Buffer object could 14184 cause corruption of the DSDT if the object type being stored was 14185 the same as the target object type and the length of the object 14186 being stored was equal to or smaller than the original (existing) 14187 target object. This was seen to cause corruption of battery _BIF 14188 buffers if the _BIF method modified the buffer on the fly. 14189 14190 Fixed a problem where an internal error was generated if a control 14191 method invocation was used in an OperationRegion, Buffer, or 14192 Package declaration. This was caused by the deferred parsing of 14193 the control method and thus the deferred creation of the internal 14194 method object. The solution to this problem was to create the 14195 internal method object at the moment the method is encountered in 14196 the first pass - so that subsequent references to the method will 14197 able to obtain the required parameter count and thus properly 14198 parse the method invocation. This problem presented itself as an 14199 AE_AML_INTERNAL during the pass 1 parse phase during table load. 14200 14201 Fixed a problem where the internal String object copy routine did 14202 not always allocate sufficient memory for the target String object 14203 and caused memory corruption. This problem was seen to cause 14204 "Allocation already present in list!" errors as memory allocation 14205 became corrupted. 14206 14207 Implemented a new function for the evaluation of namespace objects 14208 that allows the specification of the allowable return object 14209 types. This simplifies a lot of code that checks for a return 14210 object of one or more specific objects returned from the 14211 evaluation (such as _STA, etc.) This may become and external 14212 function if it would be useful to ACPI-related drivers. 14213 14214 Completed another round of prefixing #defines with "ACPI_" for 14215 clarity. 14216 14217 Completed additional code restructuring to allow more modular 14218 linking for iASL compiler and AcpiExec. Several files were split 14219 creating new files. New files: nsparse.c dsinit.c evgpe.c 14220 14221 Implemented an abort mechanism to terminate an executing control 14222 method via the AML debugger. This feature is useful for debugging 14223 control methods that depend (wait) for specific hardware 14224 responses. 14225 14226 Code and Data Size: Current core subsystem library sizes are shown 14227 below. These are the code and data sizes for the acpica.lib 14228 produced by the Microsoft Visual C++ 6.0 compiler, and these 14229 values do not include any ACPI driver or OSPM code. The debug 14230 version of the code includes the debug output trace mechanism and 14231 has a much larger code and data size. Note that these values will 14232 vary depending on the efficiency of the compiler and the compiler 14233 options used during generation. 14234 14235 Previous Release 14236 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 14237 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 14238 Current Release: 14239 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 14240 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 14241 14242 14243 2) iASL Compiler/Disassembler 14244 14245 Fixed a compiler code generation problem for "Interrupt" Resource 14246 Descriptors. If specified in the ASL, the optional "Resource 14247 Source Index" and "Resource Source" fields were not inserted into 14248 the correct location within the AML resource descriptor, creating 14249 an invalid descriptor. 14250 14251 Fixed a disassembler problem for "Interrupt" resource descriptors. 14252 The optional "Resource Source Index" and "Resource Source" fields 14253 were ignored. 14254 14255 14256 ---------------------------------------- 14257 22 November 2002. Summary of changes for version 20021122. 14258 14259 14260 1) ACPI CA Core Subsystem: 14261 14262 Fixed a reported problem where an object stored to a Method Local 14263 or Arg was not copied to a new object during the store - the 14264 object pointer was simply copied to the Local/Arg. This caused 14265 all subsequent operations on the Local/Arg to also affect the 14266 original source of the store operation. 14267 14268 Fixed a problem where a store operation to a Method Local or Arg 14269 was not completed properly if the Local/Arg contained a reference 14270 (from RefOf) to a named field. The general-purpose store-to- 14271 namespace-node code is now used so that this case is handled 14272 automatically. 14273 14274 Fixed a problem where the internal object copy routine would cause 14275 a protection fault if the object being copied was a Package and 14276 contained either 1) a NULL package element or 2) a nested sub- 14277 package. 14278 14279 Fixed a problem with the GPE initialization that resulted from an 14280 ambiguity in the ACPI specification. One section of the 14281 specification states that both the address and length of the GPE 14282 block must be zero if the block is not supported. Another section 14283 implies that only the address need be zero if the block is not 14284 supported. The code has been changed so that both the address and 14285 the length must be non-zero to indicate a valid GPE block (i.e., 14286 if either the address or the length is zero, the GPE block is 14287 invalid.) 14288 14289 Code and Data Size: Current core subsystem library sizes are shown 14290 below. These are the code and data sizes for the acpica.lib 14291 produced by the Microsoft Visual C++ 6.0 compiler, and these 14292 values do not include any ACPI driver or OSPM code. The debug 14293 version of the code includes the debug output trace mechanism and 14294 has a much larger code and data size. Note that these values will 14295 vary depending on the efficiency of the compiler and the compiler 14296 options used during generation. 14297 14298 Previous Release 14299 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 14300 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 14301 Current Release: 14302 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 14303 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 14304 14305 14306 2) Linux 14307 14308 Cleaned up EC driver. Exported an external EC read/write 14309 interface. By going through this, other drivers (most notably 14310 sonypi) will be able to serialize access to the EC. 14311 14312 14313 3) iASL Compiler/Disassembler 14314 14315 Implemented support to optionally generate include files for both 14316 ASM and C (the -i switch). This simplifies BIOS development by 14317 automatically creating include files that contain external 14318 declarations for the symbols that are created within the 14319 14320 (optionally generated) ASM and C AML source files. 14321 14322 14323 ---------------------------------------- 14324 15 November 2002. Summary of changes for version 20021115. 14325 14326 1) ACPI CA Core Subsystem: 14327 14328 Fixed a memory leak problem where an error during resolution of 14329 14330 method arguments during a method invocation from another method 14331 failed to cleanup properly by deleting all successfully resolved 14332 argument objects. 14333 14334 Fixed a problem where the target of the Index() operator was not 14335 correctly constructed if the source object was a package. This 14336 problem has not been detected because the use of a target operand 14337 with Index() is very rare. 14338 14339 Fixed a problem with the Index() operator where an attempt was 14340 made to delete the operand objects twice. 14341 14342 Fixed a problem where an attempt was made to delete an operand 14343 twice during execution of the CondRefOf() operator if the target 14344 did not exist. 14345 14346 Implemented the first of perhaps several internal create object 14347 functions that create and initialize a specific object type. This 14348 consolidates duplicated code wherever the object is created, thus 14349 shrinking the size of the subsystem. 14350 14351 Implemented improved debug/error messages for errors that occur 14352 during nested method invocations. All executing method pathnames 14353 are displayed (with the error) as the call stack is unwound - thus 14354 simplifying debug. 14355 14356 Fixed a problem introduced in the 10/02 release that caused 14357 premature deletion of a buffer object if a buffer was used as an 14358 ASL operand where an integer operand is required (Thus causing an 14359 implicit object conversion from Buffer to Integer.) The change in 14360 the 10/02 release was attempting to fix a memory leak (albeit 14361 incorrectly.) 14362 14363 Code and Data Size: Current core subsystem library sizes are shown 14364 below. These are the code and data sizes for the acpica.lib 14365 produced by the Microsoft Visual C++ 6.0 compiler, and these 14366 values do not include any ACPI driver or OSPM code. The debug 14367 version of the code includes the debug output trace mechanism and 14368 has a much larger code and data size. Note that these values will 14369 vary depending on the efficiency of the compiler and the compiler 14370 options used during generation. 14371 14372 Previous Release 14373 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 14374 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 14375 Current Release: 14376 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 14377 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 14378 14379 14380 2) Linux 14381 14382 Changed the implementation of the ACPI semaphores to use down() 14383 instead of down_interruptable(). It is important that the 14384 execution of ACPI control methods not be interrupted by signals. 14385 Methods must run to completion, or the system may be left in an 14386 unknown/unstable state. 14387 14388 Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set. 14389 (Shawn Starr) 14390 14391 14392 3) iASL Compiler/Disassembler 14393 14394 14395 Changed the default location of output files. All output files 14396 are now placed in the current directory by default instead of in 14397 the directory of the source file. This change may affect some 14398 existing makefiles, but it brings the behavior of the compiler in 14399 line with other similar tools. The location of the output files 14400 can be overridden with the -p command line switch. 14401 14402 14403 ---------------------------------------- 14404 11 November 2002. Summary of changes for version 20021111. 14405 14406 14407 0) ACPI Specification 2.0B is released and is now available at: 14408 http://www.acpi.info/index.html 14409 14410 14411 1) ACPI CA Core Subsystem: 14412 14413 Implemented support for the ACPI 2.0 SMBus Operation Regions. 14414 This includes the early detection and handoff of the request to 14415 the SMBus region handler (avoiding all of the complex field 14416 support code), and support for the bidirectional return packet 14417 from an SMBus write operation. This paves the way for the 14418 development of SMBus drivers in each host operating system. 14419 14420 Fixed a problem where the semaphore WAIT_FOREVER constant was 14421 defined as 32 bits, but must be 16 bits according to the ACPI 14422 specification. This had the side effect of causing ASL 14423 Mutex/Event timeouts even though the ASL code requested a wait 14424 forever. Changed all internal references to the ACPI timeout 14425 parameter to 16 bits to prevent future problems. Changed the name 14426 of WAIT_FOREVER to ACPI_WAIT_FOREVER. 14427 14428 Code and Data Size: Current core subsystem library sizes are shown 14429 below. These are the code and data sizes for the acpica.lib 14430 produced by the Microsoft Visual C++ 6.0 compiler, and these 14431 values do not include any ACPI driver or OSPM code. The debug 14432 version of the code includes the debug output trace mechanism and 14433 has a much larger code and data size. Note that these values will 14434 vary depending on the efficiency of the compiler and the compiler 14435 options used during generation. 14436 14437 Previous Release 14438 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 14439 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 14440 Current Release: 14441 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 14442 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 14443 14444 14445 2) Linux 14446 14447 Module loading/unloading fixes (John Cagle) 14448 14449 14450 3) iASL Compiler/Disassembler 14451 14452 Added support for the SMBBlockProcessCall keyword (ACPI 2.0) 14453 14454 Implemented support for the disassembly of all SMBus protocol 14455 keywords (SMBQuick, SMBWord, etc.) 14456 14457 ---------------------------------------- 14458 01 November 2002. Summary of changes for version 20021101. 14459 14460 14461 1) ACPI CA Core Subsystem: 14462 14463 Fixed a problem where platforms that have a GPE1 block but no GPE0 14464 block were not handled correctly. This resulted in a "GPE 14465 overlap" error message. GPE0 is no longer required. 14466 14467 Removed code added in the previous release that inserted nodes 14468 into the namespace in alphabetical order. This caused some side- 14469 effects on various machines. The root cause of the problem is 14470 still under investigation since in theory, the internal ordering 14471 of the namespace nodes should not matter. 14472 14473 14474 Enhanced error reporting for the case where a named object is not 14475 found during control method execution. The full ACPI namepath 14476 (name reference) of the object that was not found is displayed in 14477 this case. 14478 14479 Note: as a result of the overhaul of the namespace object types in 14480 the previous release, the namespace nodes for the predefined 14481 scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE 14482 instead of ACPI_TYPE_ANY. This simplifies the namespace 14483 management code but may affect code that walks the namespace tree 14484 looking for specific object types. 14485 14486 Code and Data Size: Current core subsystem library sizes are shown 14487 below. These are the code and data sizes for the acpica.lib 14488 produced by the Microsoft Visual C++ 6.0 compiler, and these 14489 values do not include any ACPI driver or OSPM code. The debug 14490 version of the code includes the debug output trace mechanism and 14491 has a much larger code and data size. Note that these values will 14492 vary depending on the efficiency of the compiler and the compiler 14493 options used during generation. 14494 14495 Previous Release 14496 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 14497 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 14498 Current Release: 14499 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 14500 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 14501 14502 14503 2) Linux 14504 14505 Fixed a problem introduced in the previous release where the 14506 Processor and Thermal objects were not recognized and installed in 14507 /proc. This was related to the scope type change described above. 14508 14509 14510 3) iASL Compiler/Disassembler 14511 14512 Implemented the -g option to get all of the required ACPI tables 14513 from the registry and save them to files (Windows version of the 14514 compiler only.) The required tables are the FADT, FACS, and DSDT. 14515 14516 Added ACPI table checksum validation during table disassembly in 14517 order to catch corrupted tables. 14518 14519 14520 ---------------------------------------- 14521 22 October 2002. Summary of changes for version 20021022. 14522 14523 1) ACPI CA Core Subsystem: 14524 14525 Implemented a restriction on the Scope operator that the target 14526 must already exist in the namespace at the time the operator is 14527 encountered (during table load or method execution). In other 14528 words, forward references are not allowed and Scope() cannot 14529 create a new object. This changes the previous behavior where the 14530 interpreter would create the name if not found. This new behavior 14531 correctly enables the search-to-root algorithm during namespace 14532 lookup of the target name. Because of this upsearch, this fixes 14533 the known Compaq _SB_.OKEC problem and makes both the AML 14534 interpreter and iASL compiler compatible with other ACPI 14535 implementations. 14536 14537 Completed a major overhaul of the internal ACPI object types for 14538 the ACPI Namespace and the associated operand objects. Many of 14539 these types had become obsolete with the introduction of the two- 14540 pass namespace load. This cleanup simplifies the code and makes 14541 the entire namespace load mechanism much clearer and easier to 14542 understand. 14543 14544 Improved debug output for tracking scope opening/closing to help 14545 diagnose scoping issues. The old scope name as well as the new 14546 scope name are displayed. Also improved error messages for 14547 problems with ASL Mutex objects and error messages for GPE 14548 problems. 14549 14550 Cleaned up the namespace dump code, removed obsolete code. 14551 14552 All string output (for all namespace/object dumps) now uses the 14553 common ACPI string output procedure which handles escapes properly 14554 and does not emit non-printable characters. 14555 14556 Fixed some issues with constants in the 64-bit version of the 14557 local C library (utclib.c) 14558 14559 14560 2) Linux 14561 14562 EC Driver: No longer attempts to acquire the Global Lock at 14563 interrupt level. 14564 14565 14566 3) iASL Compiler/Disassembler 14567 14568 Implemented ACPI 2.0B grammar change that disallows all Type 1 and 14569 2 opcodes outside of a control method. This means that the 14570 "executable" operators (versus the "namespace" operators) cannot 14571 be used at the table level; they can only be used within a control 14572 method. 14573 14574 Implemented the restriction on the Scope() operator where the 14575 target must already exist in the namespace at the time the 14576 operator is encountered (during ASL compilation). In other words, 14577 forward references are not allowed and Scope() cannot create a new 14578 object. This makes the iASL compiler compatible with other ACPI 14579 implementations and makes the Scope() implementation adhere to the 14580 ACPI specification. 14581 14582 Fixed a problem where namepath optimization for the Alias operator 14583 was optimizing the wrong path (of the two namepaths.) This caused 14584 a "Missing alias link" error message. 14585 14586 Fixed a problem where an "unknown reserved name" warning could be 14587 incorrectly generated for names like "_SB" when the trailing 14588 underscore is not used in the original ASL. 14589 14590 Fixed a problem where the reserved name check did not handle 14591 NamePaths with multiple NameSegs correctly. The first nameseg of 14592 the NamePath was examined instead of the last NameSeg. 14593 14594 14595 ---------------------------------------- 14596 14597 02 October 2002. Summary of changes for this release. 14598 14599 14600 1) ACPI CA Core Subsystem version 20021002: 14601 14602 Fixed a problem where a store/copy of a string to an existing 14603 string did not always set the string length properly in the String 14604 object. 14605 14606 Fixed a reported problem with the ToString operator where the 14607 behavior was identical to the ToHexString operator instead of just 14608 simply converting a raw buffer to a string data type. 14609 14610 Fixed a problem where CopyObject and the other "explicit" 14611 conversion operators were not updating the internal namespace node 14612 type as part of the store operation. 14613 14614 Fixed a memory leak during implicit source operand conversion 14615 where the original object was not deleted if it was converted to a 14616 new object of a different type. 14617 14618 Enhanced error messages for all problems associated with namespace 14619 lookups. Common procedure generates and prints the lookup name as 14620 well as the formatted status. 14621 14622 Completed implementation of a new design for the Alias support 14623 within the namespace. The existing design did not handle the case 14624 where a new object was assigned to one of the two names due to the 14625 use of an explicit conversion operator, resulting in the two names 14626 pointing to two different objects. The new design simply points 14627 the Alias name to the original name node - not to the object. 14628 This results in a level of indirection that must be handled in the 14629 name resolution mechanism. 14630 14631 Code and Data Size: Current core subsystem library sizes are shown 14632 below. These are the code and data sizes for the acpica.lib 14633 produced by the Microsoft Visual C++ 6.0 compiler, and these 14634 values do not include any ACPI driver or OSPM code. The debug 14635 version of the code includes the debug output trace mechanism and 14636 has a larger code and data size. Note that these values will vary 14637 depending on the efficiency of the compiler and the compiler 14638 options used during generation. 14639 14640 Previous Release 14641 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 14642 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 14643 Current Release: 14644 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 14645 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 14646 14647 14648 2) Linux 14649 14650 Initialize thermal driver's timer before it is used. (Knut 14651 Neumann) 14652 14653 Allow handling negative celsius values. (Kochi Takayoshi) 14654 14655 Fix thermal management and make trip points. R/W (Pavel Machek) 14656 14657 Fix /proc/acpi/sleep. (P. Christeas) 14658 14659 IA64 fixes. (David Mosberger) 14660 14661 Fix reversed logic in blacklist code. (Sergio Monteiro Basto) 14662 14663 Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik 14664 Brodowski) 14665 14666 14667 3) iASL Compiler/Disassembler 14668 14669 Clarified some warning/error messages. 14670 14671 14672 ---------------------------------------- 14673 18 September 2002. Summary of changes for this release. 14674 14675 14676 1) ACPI CA Core Subsystem version 20020918: 14677 14678 Fixed a reported problem with reference chaining (via the Index() 14679 and RefOf() operators) in the ObjectType() and SizeOf() operators. 14680 The definition of these operators includes the dereferencing of 14681 all chained references to return information on the base object. 14682 14683 Fixed a problem with stores to indexed package elements - the 14684 existing code would not complete the store if an "implicit 14685 conversion" was not performed. In other words, if the existing 14686 object (package element) was to be replaced completely, the code 14687 didn't handle this case. 14688 14689 Relaxed typechecking on the ASL "Scope" operator to allow the 14690 target name to refer to an object of type Integer, String, or 14691 Buffer, in addition to the scoping object types (Device, 14692 predefined Scopes, Processor, PowerResource, and ThermalZone.) 14693 This allows existing AML code that has workarounds for a bug in 14694 Windows to function properly. A warning is issued, however. This 14695 affects both the AML interpreter and the iASL compiler. Below is 14696 an example of this type of ASL code: 14697 14698 Name(DEB,0x00) 14699 Scope(DEB) 14700 { 14701 14702 Fixed some reported problems with 64-bit integer support in the 14703 local implementation of C library functions (clib.c) 14704 14705 14706 2) Linux 14707 14708 Use ACPI fix map region instead of IOAPIC region, since it is 14709 undefined in non-SMP. 14710 14711 Ensure that the SCI has the proper polarity and trigger, even on 14712 systems that do not have an interrupt override entry in the MADT. 14713 14714 2.5 big driver reorganization (Pat Mochel) 14715 14716 Use early table mapping code from acpitable.c (Andi Kleen) 14717 14718 New blacklist entries (Andi Kleen) 14719 14720 Blacklist improvements. Split blacklist code out into a separate 14721 file. Move checking the blacklist to very early. Previously, we 14722 would use ACPI tables, and then halfway through init, check the 14723 blacklist -- too late. Now, it's early enough to completely fall- 14724 back to non-ACPI. 14725 14726 14727 3) iASL Compiler/Disassembler version 20020918: 14728 14729 Fixed a problem where the typechecking code didn't know that an 14730 alias could point to a method. In other words, aliases were not 14731 being dereferenced during typechecking. 14732 14733 14734 ---------------------------------------- 14735 29 August 2002. Summary of changes for this release. 14736 14737 1) ACPI CA Core Subsystem Version 20020829: 14738 14739 If the target of a Scope() operator already exists, it must be an 14740 object type that actually opens a scope -- such as a Device, 14741 Method, Scope, etc. This is a fatal runtime error. Similar error 14742 check has been added to the iASL compiler also. 14743 14744 Tightened up the namespace load to disallow multiple names in the 14745 same scope. This previously was allowed if both objects were of 14746 the same type. (i.e., a lookup was the same as entering a new 14747 name). 14748 14749 14750 2) Linux 14751 14752 Ensure that the ACPI interrupt has the proper trigger and 14753 polarity. 14754 14755 local_irq_disable is extraneous. (Matthew Wilcox) 14756 14757 Make "acpi=off" actually do what it says, and not use the ACPI 14758 interpreter *or* the tables. 14759 14760 Added arch-neutral support for parsing SLIT and SRAT tables (Kochi 14761 Takayoshi) 14762 14763 14764 3) iASL Compiler/Disassembler Version 20020829: 14765 14766 Implemented namepath optimization for name declarations. For 14767 example, a declaration like "Method (\_SB_.ABCD)" would get 14768 optimized to "Method (ABCD)" if the declaration is within the 14769 \_SB_ scope. This optimization is in addition to the named 14770 reference path optimization first released in the previous 14771 version. This would seem to complete all possible optimizations 14772 for namepaths within the ASL/AML. 14773 14774 If the target of a Scope() operator already exists, it must be an 14775 object type that actually opens a scope -- such as a Device, 14776 Method, Scope, etc. 14777 14778 Implemented a check and warning for unreachable code in the same 14779 block below a Return() statement. 14780 14781 Fixed a problem where the listing file was not generated if the 14782 compiler aborted if the maximum error count was exceeded (200). 14783 14784 Fixed a problem where the typechecking of method return values was 14785 broken. This includes the check for a return value when the 14786 method is invoked as a TermArg (a return value is expected.) 14787 14788 Fixed a reported problem where EOF conditions during a quoted 14789 string or comment caused a fault. 14790 14791 14792 ---------------------------------------- 14793 15 August 2002. Summary of changes for this release. 14794 14795 1) ACPI CA Core Subsystem Version 20020815: 14796 14797 Fixed a reported problem where a Store to a method argument that 14798 contains a reference did not perform the indirect store correctly. 14799 This problem was created during the conversion to the new 14800 reference object model - the indirect store to a method argument 14801 code was not updated to reflect the new model. 14802 14803 Reworked the ACPI mode change code to better conform to ACPI 2.0, 14804 handle corner cases, and improve code legibility (Kochi Takayoshi) 14805 14806 Fixed a problem with the pathname parsing for the carat (^) 14807 prefix. The heavy use of the carat operator by the new namepath 14808 optimization in the iASL compiler uncovered a problem with the AML 14809 interpreter handling of this prefix. In the case where one or 14810 more carats precede a single nameseg, the nameseg was treated as 14811 standalone and the search rule (to root) was inadvertently 14812 applied. This could cause both the iASL compiler and the 14813 interpreter to find the wrong object or to miss the error that 14814 should occur if the object does not exist at that exact pathname. 14815 14816 Found and fixed the problem where the HP Pavilion DSDT would not 14817 load. This was a relatively minor tweak to the table loading code 14818 (a problem caused by the unexpected encounter with a method 14819 invocation not within a control method), but it does not solve the 14820 overall issue of the execution of AML code at the table level. 14821 This investigation is still ongoing. 14822 14823 Code and Data Size: Current core subsystem library sizes are shown 14824 below. These are the code and data sizes for the acpica.lib 14825 produced by the Microsoft Visual C++ 6.0 compiler, and these 14826 values do not include any ACPI driver or OSPM code. The debug 14827 version of the code includes the debug output trace mechanism and 14828 has a larger code and data size. Note that these values will vary 14829 depending on the efficiency of the compiler and the compiler 14830 options used during generation. 14831 14832 Previous Release 14833 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 14834 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 14835 Current Release: 14836 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 14837 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 14838 14839 14840 2) Linux 14841 14842 Remove redundant slab.h include (Brad Hards) 14843 14844 Fix several bugs in thermal.c (Herbert Nachtnebel) 14845 14846 Make CONFIG_ACPI_BOOT work properly (Pavel Machek) 14847 14848 Change acpi_system_suspend to use updated irq functions (Pavel 14849 Machek) 14850 14851 Export acpi_get_firmware_table (Matthew Wilcox) 14852 14853 Use proper root proc entry for ACPI (Kochi Takayoshi) 14854 14855 Fix early-boot table parsing (Bjorn Helgaas) 14856 14857 14858 3) iASL Compiler/Disassembler 14859 14860 Reworked the compiler options to make them more consistent and to 14861 use two-letter options where appropriate. We were running out of 14862 sensible letters. This may break some makefiles, so check the 14863 current options list by invoking the compiler with no parameters. 14864 14865 Completed the design and implementation of the ASL namepath 14866 optimization option for the compiler. This option optimizes all 14867 references to named objects to the shortest possible path. The 14868 first attempt tries to utilize a single nameseg (4 characters) and 14869 the "search-to-root" algorithm used by the interpreter. If that 14870 cannot be used (because either the name is not in the search path 14871 or there is a conflict with another object with the same name), 14872 the pathname is optimized using the carat prefix (usually a 14873 shorter string than specifying the entire path from the root.) 14874 14875 Implemented support to obtain the DSDT from the Windows registry 14876 (when the disassembly option is specified with no input file). 14877 Added this code as the implementation for AcpiOsTableOverride in 14878 the Windows OSL. Migrated the 16-bit code (used in the AcpiDump 14879 utility) to scan memory for the DSDT to the AcpiOsTableOverride 14880 function in the DOS OSL to make the disassembler truly OS 14881 independent. 14882 14883 Implemented a new option to disassemble and compile in one step. 14884 When used without an input filename, this option will grab the 14885 DSDT from the local machine, disassemble it, and compile it in one 14886 step. 14887 14888 Added a warning message for invalid escapes (a backslash followed 14889 by any character other than the allowable escapes). This catches 14890 the quoted string error "\_SB_" (which should be "\\_SB_" ). 14891 14892 Also, there are numerous instances in the ACPI specification where 14893 this error occurs. 14894 14895 Added a compiler option to disable all optimizations. This is 14896 basically the "compatibility mode" because by using this option, 14897 the AML code will come out exactly the same as other ASL 14898 compilers. 14899 14900 Added error messages for incorrectly ordered dependent resource 14901 functions. This includes: missing EndDependentFn macro at end of 14902 dependent resource list, nested dependent function macros (both 14903 start and end), and missing StartDependentFn macro. These are 14904 common errors that should be caught at compile time. 14905 14906 Implemented _OSI support for the disassembler and compiler. _OSI 14907 must be included in the namespace for proper disassembly (because 14908 the disassembler must know the number of arguments.) 14909 14910 Added an "optimization" message type that is optional (off by 14911 default). This message is used for all optimizations - including 14912 constant folding, integer optimization, and namepath optimization. 14913 14914 ---------------------------------------- 14915 25 July 2002. Summary of changes for this release. 14916 14917 14918 1) ACPI CA Core Subsystem Version 20020725: 14919 14920 The AML Disassembler has been enhanced to produce compilable ASL 14921 code and has been integrated into the iASL compiler (see below) as 14922 well as the single-step disassembly for the AML debugger and the 14923 disassembler for the AcpiDump utility. All ACPI 2.0A opcodes, 14924 resource templates and macros are fully supported. The 14925 disassembler has been tested on over 30 different AML files, 14926 producing identical AML when the resulting disassembled ASL file 14927 is recompiled with the same ASL compiler. 14928 14929 Modified the Resource Manager to allow zero interrupts and zero 14930 dma channels during the GetCurrentResources call. This was 14931 causing problems on some platforms. 14932 14933 Added the AcpiOsRedirectOutput interface to the OSL to simplify 14934 output redirection for the AcpiOsPrintf and AcpiOsVprintf 14935 interfaces. 14936 14937 Code and Data Size: Current core subsystem library sizes are shown 14938 below. These are the code and data sizes for the acpica.lib 14939 produced by the Microsoft Visual C++ 6.0 compiler, and these 14940 values do not include any ACPI driver or OSPM code. The debug 14941 version of the code includes the debug output trace mechanism and 14942 has a larger code and data size. Note that these values will vary 14943 depending on the efficiency of the compiler and the compiler 14944 options used during generation. 14945 14946 Previous Release 14947 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 14948 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 14949 Current Release: 14950 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 14951 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 14952 14953 14954 2) Linux 14955 14956 Fixed a panic in the EC driver (Dominik Brodowski) 14957 14958 Implemented checksum of the R/XSDT itself during Linux table scan 14959 (Richard Schaal) 14960 14961 14962 3) iASL compiler 14963 14964 The AML disassembler is integrated into the compiler. The "-d" 14965 option invokes the disassembler to completely disassemble an 14966 input AML file, producing as output a text ASL file with the 14967 extension ".dsl" (to avoid name collisions with existing .asl 14968 source files.) A future enhancement will allow the disassembler 14969 to obtain the BIOS DSDT from the registry under Windows. 14970 14971 Fixed a problem with the VendorShort and VendorLong resource 14972 descriptors where an invalid AML sequence was created. 14973 14974 Implemented a fix for BufferData term in the ASL parser. It was 14975 inadvertently defined twice, allowing invalid syntax to pass and 14976 causing reduction conflicts. 14977 14978 Fixed a problem where the Ones opcode could get converted to a 14979 value of zero if "Ones" was used where a byte, word or dword value 14980 was expected. The 64-bit value is now truncated to the correct 14981 size with the correct value. 14982 14983 14984 14985 ---------------------------------------- 14986 02 July 2002. Summary of changes for this release. 14987 14988 14989 1) ACPI CA Core Subsystem Version 20020702: 14990 14991 The Table Manager code has been restructured to add several new 14992 features. Tables that are not required by the core subsystem 14993 (other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer 14994 validated in any way and are returned from AcpiGetFirmwareTable if 14995 requested. The AcpiOsTableOverride interface is now called for 14996 each table that is loaded by the subsystem in order to allow the 14997 host to override any table it chooses. Previously, only the DSDT 14998 could be overridden. Added one new files, tbrsdt.c and 14999 tbgetall.c. 15000 15001 Fixed a problem with the conversion of internal package objects to 15002 external objects (when a package is returned from a control 15003 method.) The return buffer length was set to zero instead of the 15004 proper length of the package object. 15005 15006 Fixed a reported problem with the use of the RefOf and DeRefOf 15007 operators when passing reference arguments to control methods. A 15008 new type of Reference object is used internally for references 15009 produced by the RefOf operator. 15010 15011 Added additional error messages in the Resource Manager to explain 15012 AE_BAD_DATA errors when they occur during resource parsing. 15013 15014 Split the AcpiEnableSubsystem into two primitives to enable a 15015 finer granularity initialization sequence. These two calls should 15016 be called in this order: AcpiEnableSubsystem (flags), 15017 AcpiInitializeObjects (flags). The flags parameter remains the 15018 same. 15019 15020 15021 2) Linux 15022 15023 Updated the ACPI utilities module to understand the new style of 15024 fully resolved package objects that are now returned from the core 15025 subsystem. This eliminates errors of the form: 15026 15027 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT] 15028 acpi_utils-0430 [145] acpi_evaluate_reference: 15029 Invalid element in package (not a device reference) 15030 15031 The method evaluation utility uses the new buffer allocation 15032 scheme instead of calling AcpiEvaluate Object twice. 15033 15034 Added support for ECDT. This allows the use of the Embedded 15035 15036 Controller before the namespace has been fully initialized, which 15037 is necessary for ACPI 2.0 support, and for some laptops to 15038 initialize properly. (Laptops using ECDT are still rare, so only 15039 limited testing was performed of the added functionality.) 15040 15041 Fixed memory leaks in the EC driver. 15042 15043 Eliminated a brittle code structure in acpi_bus_init(). 15044 15045 Eliminated the acpi_evaluate() helper function in utils.c. It is 15046 no longer needed since acpi_evaluate_object can optionally 15047 allocate memory for the return object. 15048 15049 Implemented fix for keyboard hang when getting battery readings on 15050 some systems (Stephen White) 15051 15052 PCI IRQ routing update (Dominik Brodowski) 15053 15054 Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC 15055 support 15056 15057 ---------------------------------------- 15058 11 June 2002. Summary of changes for this release. 15059 15060 15061 1) ACPI CA Core Subsystem Version 20020611: 15062 15063 Fixed a reported problem where constants such as Zero and One 15064 appearing within _PRT packages were not handled correctly within 15065 the resource manager code. Originally reported against the ASL 15066 compiler because the code generator now optimizes integers to 15067 their minimal AML representation (i.e. AML constants if possible.) 15068 The _PRT code now handles all AML constant opcodes correctly 15069 (Zero, One, Ones, Revision). 15070 15071 Fixed a problem with the Concatenate operator in the AML 15072 interpreter where a buffer result object was incorrectly marked as 15073 not fully evaluated, causing a run-time error of AE_AML_INTERNAL. 15074 15075 All package sub-objects are now fully resolved before they are 15076 returned from the external ACPI interfaces. This means that name 15077 strings are resolved to object handles, and constant operators 15078 (Zero, One, Ones, Revision) are resolved to Integers. 15079 15080 Implemented immediate resolution of the AML Constant opcodes 15081 (Zero, One, Ones, Revision) to Integer objects upon detection 15082 within the AML stream. This has simplified and reduced the 15083 generated code size of the subsystem by eliminating about 10 15084 switch statements for these constants (which previously were 15085 contained in Reference objects.) The complicating issues are that 15086 the Zero opcode is used as a "placeholder" for unspecified 15087 optional target operands and stores to constants are defined to be 15088 no-ops. 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: 69.3K Code, 7.4K Data, 76.7K Total 15101 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 15102 Current Release: 15103 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 15104 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 15105 15106 15107 2) Linux 15108 15109 15110 Added preliminary support for obtaining _TRA data for PCI root 15111 bridges (Bjorn Helgaas). 15112 15113 15114 3) iASL Compiler Version X2046: 15115 15116 Fixed a problem where the "_DDN" reserved name was defined to be a 15117 control method with one argument. There are no arguments, and 15118 _DDN does not have to be a control method. 15119 15120 Fixed a problem with the Linux version of the compiler where the 15121 source lines printed with error messages were the wrong lines. 15122 This turned out to be the "LF versus CR/LF" difference between 15123 Windows and Unix. This appears to be the longstanding issue 15124 concerning listing output and error messages. 15125 15126 Fixed a problem with the Linux version of compiler where opcode 15127 names within error messages were wrong. This was caused by a 15128 slight difference in the output of the Flex tool on Linux versus 15129 Windows. 15130 15131 Fixed a problem with the Linux compiler where the hex output files 15132 contained some garbage data caused by an internal buffer overrun. 15133 15134 15135 ---------------------------------------- 15136 17 May 2002. Summary of changes for this release. 15137 15138 15139 1) ACPI CA Core Subsystem Version 20020517: 15140 15141 Implemented a workaround to an BIOS bug discovered on the HP 15142 OmniBook where the FADT revision number and the table size are 15143 inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new 15144 behavior is to fallback to using only the ACPI 1.0 fields of the 15145 FADT if the table is too small to be a ACPI 2.0 table as claimed 15146 by the revision number. Although this is a BIOS bug, this is a 15147 case where the workaround is simple enough and with no side 15148 effects, so it seemed prudent to add it. A warning message is 15149 issued, however. 15150 15151 Implemented minimum size checks for the fixed-length ACPI tables - 15152 - the FADT and FACS, as well as consistency checks between the 15153 revision number and the table size. 15154 15155 Fixed a reported problem in the table override support where the 15156 new table pointer was incorrectly treated as a physical address 15157 instead of a logical address. 15158 15159 Eliminated the use of the AE_AML_ERROR exception and replaced it 15160 with more descriptive codes. 15161 15162 Fixed a problem where an exception would occur if an ASL Field was 15163 defined with no named Field Units underneath it (used by some 15164 index fields). 15165 15166 Code and Data Size: Current core subsystem library sizes are shown 15167 below. These are the code and data sizes for the acpica.lib 15168 produced by the Microsoft Visual C++ 6.0 compiler, and these 15169 values do not include any ACPI driver or OSPM code. The debug 15170 version of the code includes the debug output trace mechanism and 15171 has a larger code and data size. Note that these values will vary 15172 depending on the efficiency of the compiler and the compiler 15173 options used during generation. 15174 15175 Previous Release 15176 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 15177 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 15178 Current Release: 15179 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 15180 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 15181 15182 15183 15184 2) Linux 15185 15186 Much work done on ACPI init (MADT and PCI IRQ routing support). 15187 (Paul D. and Dominik Brodowski) 15188 15189 Fix PCI IRQ-related panic on boot (Sam Revitch) 15190 15191 Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno) 15192 15193 Fix "MHz" typo (Dominik Brodowski) 15194 15195 Fix RTC year 2000 issue (Dominik Brodowski) 15196 15197 Preclude multiple button proc entries (Eric Brunet) 15198 15199 Moved arch-specific code out of include/platform/aclinux.h 15200 15201 3) iASL Compiler Version X2044: 15202 15203 Implemented error checking for the string used in the EISAID macro 15204 (Usually used in the definition of the _HID object.) The code now 15205 strictly enforces the PnP format - exactly 7 characters, 3 15206 uppercase letters and 4 hex digits. 15207 15208 If a raw string is used in the definition of the _HID object 15209 (instead of the EISAID macro), the string must contain all 15210 alphanumeric characters (e.g., "*PNP0011" is not allowed because 15211 of the asterisk.) 15212 15213 Implemented checking for invalid use of ACPI reserved names for 15214 most of the name creation operators (Name, Device, Event, Mutex, 15215 OperationRegion, PowerResource, Processor, and ThermalZone.) 15216 Previously, this check was only performed for control methods. 15217 15218 Implemented an additional check on the Name operator to emit an 15219 error if a reserved name that must be implemented in ASL as a 15220 control method is used. We know that a reserved name must be a 15221 method if it is defined with input arguments. 15222 15223 The warning emitted when a namespace object reference is not found 15224 during the cross reference phase has been changed into an error. 15225 The "External" directive should be used for names defined in other 15226 modules. 15227 15228 15229 4) Tools and Utilities 15230 15231 The 16-bit tools (adump16 and aexec16) have been regenerated and 15232 tested. 15233 15234 Fixed a problem with the output of both acpidump and adump16 where 15235 the indentation of closing parentheses and brackets was not 15236 15237 aligned properly with the parent block. 15238 15239 15240 ---------------------------------------- 15241 03 May 2002. Summary of changes for this release. 15242 15243 15244 1) ACPI CA Core Subsystem Version 20020503: 15245 15246 Added support a new OSL interface that allows the host operating 15247 15248 system software to override the DSDT found in the firmware - 15249 AcpiOsTableOverride. With this interface, the OSL can examine the 15250 version of the firmware DSDT and replace it with a different one 15251 if desired. 15252 15253 Added new external interfaces for accessing ACPI registers from 15254 device drivers and other system software - AcpiGetRegister and 15255 AcpiSetRegister. This was simply an externalization of the 15256 existing AcpiHwBitRegister interfaces. 15257 15258 Fixed a regression introduced in the previous build where the 15259 ASL/AML CreateField operator always returned an error, 15260 "destination must be a NS Node". 15261 15262 Extended the maximum time (before failure) to successfully enable 15263 ACPI mode to 3 seconds. 15264 15265 Code and Data Size: Current core subsystem library sizes are shown 15266 below. These are the code and data sizes for the acpica.lib 15267 produced by the Microsoft Visual C++ 6.0 compiler, and these 15268 values do not include any ACPI driver or OSPM code. The debug 15269 version of the code includes the debug output trace mechanism and 15270 has a larger code and data size. Note that these values will vary 15271 depending on the efficiency of the compiler and the compiler 15272 options used during generation. 15273 15274 Previous Release 15275 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 15276 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 15277 Current Release: 15278 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 15279 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 15280 15281 15282 2) Linux 15283 15284 Enhanced ACPI init code for SMP. We are now fully MPS and $PIR- 15285 free. While 3 out of 4 of our in-house systems work fine, the last 15286 one still hangs when testing the LAPIC timer. 15287 15288 Renamed many files in 2.5 kernel release to omit "acpi_" from the 15289 name. 15290 15291 Added warning on boot for Presario 711FR. 15292 15293 Sleep improvements (Pavel Machek) 15294 15295 ACPI can now be built without CONFIG_PCI enabled. 15296 15297 IA64: Fixed memory map functions (JI Lee) 15298 15299 15300 3) iASL Compiler Version X2043: 15301 15302 Added support to allow the compiler to be integrated into the MS 15303 VC++ development environment for one-button compilation of single 15304 files or entire projects -- with error-to-source-line mapping. 15305 15306 Implemented support for compile-time constant folding for the 15307 Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0 15308 specification. This allows the ASL writer to use expressions 15309 instead of Integer/Buffer/String constants in terms that must 15310 evaluate to constants at compile time and will also simplify the 15311 emitted AML in any such sub-expressions that can be folded 15312 (evaluated at compile-time.) This increases the size of the 15313 compiler significantly because a portion of the ACPI CA AML 15314 interpreter is included within the compiler in order to pre- 15315 evaluate constant expressions. 15316 15317 15318 Fixed a problem with the "Unicode" ASL macro that caused the 15319 compiler to fault. (This macro is used in conjunction with the 15320 _STR reserved name.) 15321 15322 Implemented an AML opcode optimization to use the Zero, One, and 15323 Ones opcodes where possible to further reduce the size of integer 15324 constants and thus reduce the overall size of the generated AML 15325 code. 15326 15327 Implemented error checking for new reserved terms for ACPI version 15328 2.0A. 15329 15330 Implemented the -qr option to display the current list of ACPI 15331 reserved names known to the compiler. 15332 15333 Implemented the -qc option to display the current list of ASL 15334 operators that are allowed within constant expressions and can 15335 therefore be folded at compile time if the operands are constants. 15336 15337 15338 4) Documentation 15339 15340 Updated the Programmer's Reference for new interfaces, data types, 15341 and memory allocation model options. 15342 15343 Updated the iASL Compiler User Reference to apply new format and 15344 add information about new features and options. 15345 15346 ---------------------------------------- 15347 19 April 2002. Summary of changes for this release. 15348 15349 1) ACPI CA Core Subsystem Version 20020419: 15350 15351 The source code base for the Core Subsystem has been completely 15352 cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit 15353 versions. The Lint option files used are included in the 15354 /acpi/generate/lint directory. 15355 15356 Implemented enhanced status/error checking across the entire 15357 Hardware manager subsystem. Any hardware errors (reported from 15358 the OSL) are now bubbled up and will abort a running control 15359 method. 15360 15361 15362 Fixed a problem where the per-ACPI-table integer width (32 or 64) 15363 was stored only with control method nodes, causing a fault when 15364 non-control method code was executed during table loading. The 15365 solution implemented uses a global variable to indicate table 15366 width across the entire ACPI subsystem. Therefore, ACPI CA does 15367 not support mixed integer widths across different ACPI tables 15368 (DSDT, SSDT). 15369 15370 Fixed a problem where NULL extended fields (X fields) in an ACPI 15371 2.0 ACPI FADT caused the table load to fail. Although the 15372 existing ACPI specification is a bit fuzzy on this topic, the new 15373 behavior is to fall back on a ACPI 1.0 field if the corresponding 15374 ACPI 2.0 X field is zero (even though the table revision indicates 15375 a full ACPI 2.0 table.) The ACPI specification will be updated to 15376 clarify this issue. 15377 15378 Fixed a problem with the SystemMemory operation region handler 15379 where memory was always accessed byte-wise even if the AML- 15380 specified access width was larger than a byte. This caused 15381 problems on systems with memory-mapped I/O. Memory is now 15382 accessed with the width specified. On systems that do not support 15383 non-aligned transfers, a check is made to guarantee proper address 15384 alignment before proceeding in order to avoid an AML-caused 15385 alignment fault within the kernel. 15386 15387 15388 Fixed a problem with the ExtendedIrq resource where only one byte 15389 of the 4-byte Irq field was extracted. 15390 15391 Fixed the AcpiExDigitsNeeded() procedure to support _UID. This 15392 function was out of date and required a rewrite. 15393 15394 Code and Data Size: Current core subsystem library sizes are shown 15395 below. These are the code and data sizes for the acpica.lib 15396 produced by the Microsoft Visual C++ 6.0 compiler, and these 15397 values do not include any ACPI driver or OSPM code. The debug 15398 version of the code includes the debug output trace mechanism and 15399 has a larger code and data size. Note that these values will vary 15400 depending on the efficiency of the compiler and the compiler 15401 options used during generation. 15402 15403 Previous Release 15404 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 15405 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 15406 Current Release: 15407 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 15408 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 15409 15410 15411 2) Linux 15412 15413 PCI IRQ routing fixes (Dominik Brodowski) 15414 15415 15416 3) iASL Compiler Version X2042: 15417 15418 Implemented an additional compile-time error check for a field 15419 unit whose size + minimum access width would cause a run-time 15420 access beyond the end-of-region. Previously, only the field size 15421 itself was checked. 15422 15423 The Core subsystem and iASL compiler now share a common parse 15424 object in preparation for compile-time evaluation of the type 15425 3/4/5 ASL operators. 15426 15427 15428 ---------------------------------------- 15429 Summary of changes for this release: 03_29_02 15430 15431 1) ACPI CA Core Subsystem Version 20020329: 15432 15433 Implemented support for late evaluation of TermArg operands to 15434 Buffer and Package objects. This allows complex expressions to be 15435 used in the declarations of these object types. 15436 15437 Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI 15438 1.0, if the field was larger than 32 bits, it was returned as a 15439 buffer - otherwise it was returned as an integer. In ACPI 2.0, 15440 the field is returned as a buffer only if the field is larger than 15441 64 bits. The TableRevision is now considered when making this 15442 conversion to avoid incompatibility with existing ASL code. 15443 15444 Implemented logical addressing for AcpiOsGetRootPointer. This 15445 allows an RSDP with either a logical or physical address. With 15446 this support, the host OS can now override all ACPI tables with 15447 one logical RSDP. Includes implementation of "typed" pointer 15448 support to allow a common data type for both physical and logical 15449 pointers internally. This required a change to the 15450 AcpiOsGetRootPointer interface. 15451 15452 Implemented the use of ACPI 2.0 Generic Address Structures for all 15453 GPE, Fixed Event, and PM Timer I/O. This allows the use of memory 15454 mapped I/O for these ACPI features. 15455 15456 Initialization now ignores not only non-required tables (All 15457 tables other than the FADT, FACS, DSDT, and SSDTs), but also does 15458 not validate the table headers of unrecognized tables. 15459 15460 Fixed a problem where a notify handler could only be 15461 installed/removed on an object of type Device. All "notify" 15462 15463 objects are now supported -- Devices, Processor, Power, and 15464 Thermal. 15465 15466 Removed most verbosity from the ACPI_DB_INFO debug level. Only 15467 critical information is returned when this debug level is enabled. 15468 15469 Code and Data Size: Current core subsystem library sizes are shown 15470 below. These are the code and data sizes for the acpica.lib 15471 produced by the Microsoft Visual C++ 6.0 compiler, and these 15472 values do not include any ACPI driver or OSPM code. The debug 15473 version of the code includes the debug output trace mechanism and 15474 has a larger code and data size. Note that these values will vary 15475 depending on the efficiency of the compiler and the compiler 15476 options used during generation. 15477 15478 Previous Release 15479 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 15480 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 15481 Current Release: 15482 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 15483 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 15484 15485 15486 2) Linux: 15487 15488 The processor driver (acpi_processor.c) now fully supports ACPI 15489 2.0-based processor performance control (e.g. Intel(R) 15490 SpeedStep(TM) technology) Note that older laptops that only have 15491 the Intel "applet" interface are not supported through this. The 15492 'limit' and 'performance' interface (/proc) are fully functional. 15493 [Note that basic policy for controlling performance state 15494 transitions will be included in the next version of ospmd.] The 15495 idle handler was modified to more aggressively use C2, and PIIX4 15496 errata handling underwent a complete overhaul (big thanks to 15497 Dominik Brodowski). 15498 15499 Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR- 15500 based devices in the ACPI namespace are now dynamically bound 15501 (associated) with their PCI counterparts (e.g. PCI1->01:00.0). 15502 This allows, among other things, ACPI to resolve bus numbers for 15503 subordinate PCI bridges. 15504 15505 Enhanced PCI IRQ routing to get the proper bus number for _PRT 15506 entries defined underneath PCI bridges. 15507 15508 Added IBM 600E to bad bios list due to invalid _ADR value for 15509 PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing. 15510 15511 In the process of adding full MADT support (e.g. IOAPIC) for IA32 15512 (acpi.c, mpparse.c) -- stay tuned. 15513 15514 Added back visual differentiation between fixed-feature and 15515 control-method buttons in dmesg. Buttons are also subtyped (e.g. 15516 button/power/PWRF) to simplify button identification. 15517 15518 We no longer use -Wno-unused when compiling debug. Please ignore 15519 any "_THIS_MODULE defined but not used" messages. 15520 15521 Can now shut down the system using "magic sysrq" key. 15522 15523 15524 3) iASL Compiler version 2041: 15525 15526 Fixed a problem where conversion errors for hex/octal/decimal 15527 constants were not reported. 15528 15529 Implemented a fix for the General Register template Address field. 15530 This field was 8 bits when it should be 64. 15531 15532 Fixed a problem where errors/warnings were no longer being emitted 15533 within the listing output file. 15534 15535 Implemented the ACPI 2.0A restriction on ACPI Table Signatures to 15536 exactly 4 characters, alphanumeric only. 15537 15538 15539 15540 15541 ---------------------------------------- 15542 Summary of changes for this release: 03_08_02 15543 15544 15545 1) ACPI CA Core Subsystem Version 20020308: 15546 15547 Fixed a problem with AML Fields where the use of the "AccessAny" 15548 keyword could cause an interpreter error due to attempting to read 15549 or write beyond the end of the parent Operation Region. 15550 15551 Fixed a problem in the SystemMemory Operation Region handler where 15552 an attempt was made to map memory beyond the end of the region. 15553 This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY" 15554 errors on some Linux systems. 15555 15556 Fixed a problem where the interpreter/namespace "search to root" 15557 algorithm was not functioning for some object types. Relaxed the 15558 internal restriction on the search to allow upsearches for all 15559 external object types as well as most internal types. 15560 15561 15562 2) Linux: 15563 15564 We now use safe_halt() macro versus individual calls to sti | hlt. 15565 15566 Writing to the processor limit interface should now work. "echo 1" 15567 will increase the limit, 2 will decrease, and 0 will reset to the 15568 15569 default. 15570 15571 15572 3) ASL compiler: 15573 15574 Fixed segfault on Linux version. 15575 15576 15577 ---------------------------------------- 15578 Summary of changes for this release: 02_25_02 15579 15580 1) ACPI CA Core Subsystem: 15581 15582 15583 Fixed a problem where the GPE bit masks were not initialized 15584 properly, causing erratic GPE behavior. 15585 15586 Implemented limited support for multiple calling conventions. The 15587 code can be generated with either the VPL (variable parameter 15588 list, or "C") convention, or the FPL (fixed parameter list, or 15589 "Pascal") convention. The core subsystem is about 3.4% smaller 15590 when generated with FPL. 15591 15592 15593 2) Linux 15594 15595 Re-add some /proc/acpi/event functionality that was lost during 15596 the rewrite 15597 15598 Resolved issue with /proc events for fixed-feature buttons showing 15599 up as the system device. 15600 15601 Fixed checks on C2/C3 latencies to be inclusive of maximum values. 15602 15603 Replaced AE_ERRORs in acpi_osl.c with more specific error codes. 15604 15605 Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi" 15606 15607 Fixed limit interface & usage to fix bugs with passive cooling 15608 hysterisis. 15609 15610 Restructured PRT support. 15611 15612 15613 ---------------------------------------- 15614 Summary of changes for this label: 02_14_02 15615 15616 15617 1) ACPI CA Core Subsystem: 15618 15619 Implemented support in AcpiLoadTable to allow loading of FACS and 15620 FADT tables. 15621 15622 Suport for the now-obsolete interim 0.71 64-bit ACPI tables has 15623 been removed. All 64-bit platforms should be migrated to the ACPI 15624 2.0 tables. The actbl71.h header has been removed from the source 15625 tree. 15626 15627 All C macros defined within the subsystem have been prefixed with 15628 "ACPI_" to avoid collision with other system include files. 15629 15630 Removed the return value for the two AcpiOsPrint interfaces, since 15631 it is never used and causes lint warnings for ignoring the return 15632 value. 15633 15634 Added error checking to all internal mutex acquire and release 15635 calls. Although a failure from one of these interfaces is 15636 probably a fatal system error, these checks will cause the 15637 immediate abort of the currently executing method or interface. 15638 15639 Fixed a problem where the AcpiSetCurrentResources interface could 15640 fault. This was a side effect of the deployment of the new memory 15641 allocation model. 15642 15643 Fixed a couple of problems with the Global Lock support introduced 15644 in the last major build. The "common" (1.0/2.0) internal FACS was 15645 being overwritten with the FACS signature and clobbering the 15646 Global Lock pointer. Also, the actual firmware FACS was being 15647 unmapped after construction of the "common" FACS, preventing 15648 access to the actual Global Lock field within it. The "common" 15649 internal FACS is no longer installed as an actual ACPI table; it 15650 is used simply as a global. 15651 15652 Code and Data Size: Current core subsystem library sizes are shown 15653 below. These are the code and data sizes for the acpica.lib 15654 produced by the Microsoft Visual C++ 6.0 compiler, and these 15655 values do not include any ACPI driver or OSPM code. The debug 15656 version of the code includes the debug output trace mechanism and 15657 has a larger code and data size. Note that these values will vary 15658 depending on the efficiency of the compiler and the compiler 15659 options used during generation. 15660 15661 Previous Release (02_07_01) 15662 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 15663 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 15664 Current Release: 15665 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 15666 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 15667 15668 15669 2) Linux 15670 15671 Updated Linux-specific code for core macro and OSL interface 15672 changes described above. 15673 15674 Improved /proc/acpi/event. It now can be opened only once and has 15675 proper poll functionality. 15676 15677 Fixed and restructured power management (acpi_bus). 15678 15679 Only create /proc "view by type" when devices of that class exist. 15680 15681 Fixed "charging/discharging" bug (and others) in acpi_battery. 15682 15683 Improved thermal zone code. 15684 15685 15686 3) ASL Compiler, version X2039: 15687 15688 15689 Implemented the new compiler restriction on ASL String hex/octal 15690 escapes to non-null, ASCII values. An error results if an invalid 15691 value is used. (This will require an ACPI 2.0 specification 15692 change.) 15693 15694 AML object labels that are output to the optional C and ASM source 15695 are now prefixed with both the ACPI table signature and table ID 15696 to help guarantee uniqueness within a large BIOS project. 15697 15698 15699 ---------------------------------------- 15700 Summary of changes for this label: 02_01_02 15701 15702 1) ACPI CA Core Subsystem: 15703 15704 ACPI 2.0 support is complete in the entire Core Subsystem and the 15705 ASL compiler. All new ACPI 2.0 operators are implemented and all 15706 other changes for ACPI 2.0 support are complete. With 15707 simultaneous code and data optimizations throughout the subsystem, 15708 ACPI 2.0 support has been implemented with almost no additional 15709 cost in terms of code and data size. 15710 15711 Implemented a new mechanism for allocation of return buffers. If 15712 the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will 15713 be allocated on behalf of the caller. Consolidated all return 15714 buffer validation and allocation to a common procedure. Return 15715 buffers will be allocated via the primary OSL allocation interface 15716 since it appears that a separate pool is not needed by most users. 15717 If a separate pool is required for these buffers, the caller can 15718 still use the original mechanism and pre-allocate the buffer(s). 15719 15720 Implemented support for string operands within the DerefOf 15721 operator. 15722 15723 Restructured the Hardware and Event managers to be table driven, 15724 simplifying the source code and reducing the amount of generated 15725 code. 15726 15727 Split the common read/write low-level ACPI register bitfield 15728 procedure into a separate read and write, simplifying the code 15729 considerably. 15730 15731 Obsoleted the AcpiOsCallocate OSL interface. This interface was 15732 used only a handful of times and didn't have enough critical mass 15733 for a separate interface. Replaced with a common calloc procedure 15734 in the core. 15735 15736 Fixed a reported problem with the GPE number mapping mechanism 15737 that allows GPE1 numbers to be non-contiguous with GPE0. 15738 Reorganized the GPE information and shrunk a large array that was 15739 originally large enough to hold info for all possible GPEs (256) 15740 to simply large enough to hold all GPEs up to the largest GPE 15741 number on the machine. 15742 15743 Fixed a reported problem with resource structure alignment on 64- 15744 bit platforms. 15745 15746 Changed the AcpiEnableEvent and AcpiDisableEvent external 15747 interfaces to not require any flags for the common case of 15748 enabling/disabling a GPE. 15749 15750 Implemented support to allow a "Notify" on a Processor object. 15751 15752 Most TBDs in comments within the source code have been resolved 15753 and eliminated. 15754 15755 15756 Fixed a problem in the interpreter where a standalone parent 15757 prefix (^) was not handled correctly in the interpreter and 15758 debugger. 15759 15760 Removed obsolete and unnecessary GPE save/restore code. 15761 15762 Implemented Field support in the ASL Load operator. This allows a 15763 table to be loaded from a named field, in addition to loading a 15764 table directly from an Operation Region. 15765 15766 Implemented timeout and handle support in the external Global Lock 15767 interfaces. 15768 15769 Fixed a problem in the AcpiDump utility where pathnames were no 15770 longer being generated correctly during the dump of named objects. 15771 15772 Modified the AML debugger to give a full display of if/while 15773 predicates instead of just one AML opcode at a time. (The 15774 predicate can have several nested ASL statements.) The old method 15775 was confusing during single stepping. 15776 15777 Code and Data Size: Current core subsystem library sizes are shown 15778 below. These are the code and data sizes for the acpica.lib 15779 produced by the Microsoft Visual C++ 6.0 compiler, and these 15780 values do not include any ACPI driver or OSPM code. The debug 15781 version of the code includes the debug output trace mechanism and 15782 has a larger code and data size. Note that these values will vary 15783 depending on the efficiency of the compiler and the compiler 15784 options used during generation. 15785 15786 Previous Release (12_18_01) 15787 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 15788 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 15789 Current Release: 15790 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 15791 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 15792 15793 2) Linux 15794 15795 Implemented fix for PIIX reverse throttling errata (Processor 15796 driver) 15797 15798 Added new Limit interface (Processor and Thermal drivers) 15799 15800 New thermal policy (Thermal driver) 15801 15802 Many updates to /proc 15803 15804 Battery "low" event support (Battery driver) 15805 15806 Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers) 15807 15808 IA32 - IA64 initialization unification, no longer experimental 15809 15810 Menuconfig options redesigned 15811 15812 3) ASL Compiler, version X2037: 15813 15814 Implemented several new output features to simplify integration of 15815 AML code into firmware: 1) Output the AML in C source code with 15816 labels for each named ASL object. The original ASL source code 15817 is interleaved as C comments. 2) Output the AML in ASM source code 15818 with labels and interleaved ASL source. 3) Output the AML in 15819 raw hex table form, in either C or ASM. 15820 15821 Implemented support for optional string parameters to the 15822 LoadTable operator. 15823 15824 Completed support for embedded escape sequences within string 15825 literals. The compiler now supports all single character escapes 15826 as well as the Octal and Hex escapes. Note: the insertion of a 15827 null byte into a string literal (via the hex/octal escape) causes 15828 the string to be immediately terminated. A warning is issued. 15829 15830 Fixed a problem where incorrect AML was generated for the case 15831 where an ASL namepath consists of a single parent prefix ( 15832 15833 ) with no trailing name segments. 15834 15835 The compiler has been successfully generated with a 64-bit C 15836 compiler. 15837 15838 15839 15840 15841 ---------------------------------------- 15842 Summary of changes for this label: 12_18_01 15843 15844 1) Linux 15845 15846 Enhanced blacklist with reason and severity fields. Any table's 15847 signature may now be used to identify a blacklisted system. 15848 15849 Call _PIC control method to inform the firmware which interrupt 15850 model the OS is using. Turn on any disabled link devices. 15851 15852 Cleaned up busmgr /proc error handling (Andreas Dilger) 15853 15854 2) ACPI CA Core Subsystem: 15855 15856 Implemented ACPI 2.0 semantics for the "Break" operator (Exit from 15857 while loop) 15858 15859 Completed implementation of the ACPI 2.0 "Continue", 15860 "ConcatenateResTemplate", "DataTableRegion", and "LoadTable" 15861 operators. All new ACPI 2.0 operators are now implemented in both 15862 the ASL compiler and the AML interpreter. The only remaining ACPI 15863 2.0 task is support for the String data type in the DerefOf 15864 operator. Fixed a problem with AcquireMutex where the status code 15865 was lost if the caller had to actually wait for the mutex. 15866 15867 Increased the maximum ASL Field size from 64K bits to 4G bits. 15868 15869 Completed implementation of the external Global Lock interfaces -- 15870 AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and 15871 Handler parameters were added. 15872 15873 Completed another pass at removing warnings and issues when 15874 compiling with 64-bit compilers. The code now compiles cleanly 15875 with the Intel 64-bit C/C++ compiler. Most notably, the pointer 15876 add and subtract (diff) macros have changed considerably. 15877 15878 15879 Created and deployed a new ACPI_SIZE type that is 64-bits wide on 15880 64-bit platforms, 32-bits on all others. This type is used 15881 wherever memory allocation and/or the C sizeof() operator is used, 15882 and affects the OSL memory allocation interfaces AcpiOsAllocate 15883 and AcpiOsCallocate. 15884 15885 Implemented sticky user breakpoints in the AML debugger. 15886 15887 Code and Data Size: Current core subsystem library sizes are shown 15888 below. These are the code and data sizes for the acpica.lib 15889 produced by the Microsoft Visual C++ 6.0 compiler, and these 15890 values do not include any ACPI driver or OSPM code. The debug 15891 version of the code includes the debug output trace mechanism and 15892 has a larger code and data size. Note that these values will vary 15893 depending on the efficiency of the compiler and the compiler 15894 options used during generation. 15895 15896 Previous Release (12_05_01) 15897 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 15898 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 15899 Current Release: 15900 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 15901 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 15902 15903 3) ASL Compiler, version X2034: 15904 15905 Now checks for (and generates an error if detected) the use of a 15906 Break or Continue statement without an enclosing While statement. 15907 15908 15909 Successfully generated the compiler with the Intel 64-bit C 15910 compiler. 15911 15912 ---------------------------------------- 15913 Summary of changes for this label: 12_05_01 15914 15915 1) ACPI CA Core Subsystem: 15916 15917 The ACPI 2.0 CopyObject operator is fully implemented. This 15918 operator creates a new copy of an object (and is also used to 15919 bypass the "implicit conversion" mechanism of the Store operator.) 15920 15921 The ACPI 2.0 semantics for the SizeOf operator are fully 15922 implemented. The change is that performing a SizeOf on a 15923 reference object causes an automatic dereference of the object to 15924 tha actual value before the size is evaluated. This behavior was 15925 undefined in ACPI 1.0. 15926 15927 The ACPI 2.0 semantics for the Extended IRQ resource descriptor 15928 have been implemented. The interrupt polarity and mode are now 15929 independently set. 15930 15931 Fixed a problem where ASL Constants (Zero, One, Ones, Revision) 15932 appearing in Package objects were not properly converted to 15933 integers when the internal Package was converted to an external 15934 object (via the AcpiEvaluateObject interface.) 15935 15936 Fixed a problem with the namespace object deletion mechanism for 15937 objects created by control methods. There were two parts to this 15938 problem: 1) Objects created during the initialization phase method 15939 parse were not being deleted, and 2) The object owner ID mechanism 15940 to track objects was broken. 15941 15942 Fixed a problem where the use of the ASL Scope operator within a 15943 control method would result in an invalid opcode exception. 15944 15945 Fixed a problem introduced in the previous label where the buffer 15946 length required for the _PRT structure was not being returned 15947 correctly. 15948 15949 Code and Data Size: Current core subsystem library sizes are shown 15950 below. These are the code and data sizes for the acpica.lib 15951 produced by the Microsoft Visual C++ 6.0 compiler, and these 15952 values do not include any ACPI driver or OSPM code. The debug 15953 version of the code includes the debug output trace mechanism and 15954 has a larger code and data size. Note that these values will vary 15955 depending on the efficiency of the compiler and the compiler 15956 options used during generation. 15957 15958 Previous Release (11_20_01) 15959 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 15960 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 15961 15962 Current Release: 15963 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 15964 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 15965 15966 2) Linux: 15967 15968 Updated all files to apply cleanly against 2.4.16. 15969 15970 Added basic PCI Interrupt Routing Table (PRT) support for IA32 15971 (acpi_pci.c), and unified the PRT code for IA32 and IA64. This 15972 version supports both static and dyanmic PRT entries, but dynamic 15973 entries are treated as if they were static (not yet 15974 reconfigurable). Architecture- specific code to use this data is 15975 absent on IA32 but should be available shortly. 15976 15977 Changed the initialization sequence to start the ACPI interpreter 15978 (acpi_init) prior to initialization of the PCI driver (pci_init) 15979 in init/main.c. This ordering is required to support PRT and 15980 facilitate other (future) enhancement. A side effect is that the 15981 ACPI bus driver and certain device drivers can no longer be loaded 15982 as modules. 15983 15984 Modified the 'make menuconfig' options to allow PCI Interrupt 15985 Routing support to be included without the ACPI Bus and other 15986 device drivers. 15987 15988 3) ASL Compiler, version X2033: 15989 15990 Fixed some issues with the use of the new CopyObject and 15991 DataTableRegion operators. Both are fully functional. 15992 15993 ---------------------------------------- 15994 Summary of changes for this label: 11_20_01 15995 15996 20 November 2001. Summary of changes for this release. 15997 15998 1) ACPI CA Core Subsystem: 15999 16000 Updated Index support to match ACPI 2.0 semantics. Storing a 16001 Integer, String, or Buffer to an Index of a Buffer will store only 16002 the least-significant byte of the source to the Indexed buffer 16003 byte. Multiple writes are not performed. 16004 16005 Fixed a problem where the access type used in an AccessAs ASL 16006 operator was not recorded correctly into the field object. 16007 16008 Fixed a problem where ASL Event objects were created in a 16009 signalled state. Events are now created in an unsignalled state. 16010 16011 The internal object cache is now purged after table loading and 16012 initialization to reduce the use of dynamic kernel memory -- on 16013 the assumption that object use is greatest during the parse phase 16014 of the entire table (versus the run-time use of individual control 16015 methods.) 16016 16017 ACPI 2.0 variable-length packages are now fully operational. 16018 16019 Code and Data Size: Code and Data optimizations have permitted new 16020 feature development with an actual reduction in the library size. 16021 Current core subsystem library sizes are shown below. These are 16022 the code and data sizes for the acpica.lib produced by the 16023 Microsoft Visual C++ 6.0 compiler, and these values do not include 16024 any ACPI driver or OSPM code. The debug version of the code 16025 includes the debug output trace mechanism and has a larger code 16026 and data size. Note that these values will vary depending on the 16027 efficiency of the compiler and the compiler options used during 16028 generation. 16029 16030 Previous Release (11_09_01): 16031 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 16032 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 16033 16034 Current Release: 16035 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 16036 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 16037 16038 2) Linux: 16039 16040 Enhanced the ACPI boot-time initialization code to allow the use 16041 of Local APIC tables for processor enumeration on IA-32, and to 16042 pave the way for a fully MPS-free boot (on SMP systems) in the 16043 near future. This functionality replaces 16044 arch/i386/kernel/acpitables.c, which was introduced in an earlier 16045 2.4.15-preX release. To enable this feature you must add 16046 "acpi_boot=on" to the kernel command line -- see the help entry 16047 for CONFIG_ACPI_BOOT for more information. An IA-64 release is in 16048 the works... 16049 16050 Restructured the configuration options to allow boot-time table 16051 parsing support without inclusion of the ACPI Interpreter (and 16052 other) code. 16053 16054 NOTE: This release does not include fixes for the reported events, 16055 power-down, and thermal passive cooling issues (coming soon). 16056 16057 3) ASL Compiler: 16058 16059 Added additional typechecking for Fields within restricted access 16060 Operation Regions. All fields within EC and CMOS regions must be 16061 declared with ByteAcc. All fields withing SMBus regions must be 16062 declared with the BufferAcc access type. 16063 16064 Fixed a problem where the listing file output of control methods 16065 no longer interleaved the actual AML code with the ASL source 16066 code. 16067 16068 16069 16070 16071 ---------------------------------------- 16072 Summary of changes for this label: 11_09_01 16073 16074 1) ACPI CA Core Subsystem: 16075 16076 Implemented ACPI 2.0-defined support for writes to fields with a 16077 Buffer, String, or Integer source operand that is smaller than the 16078 target field. In these cases, the source operand is zero-extended 16079 to fill the target field. 16080 16081 Fixed a problem where a Field starting bit offset (within the 16082 parent operation region) was calculated incorrectly if the 16083 16084 alignment of the field differed from the access width. This 16085 affected CreateWordField, CreateDwordField, CreateQwordField, and 16086 possibly other fields that use the "AccessAny" keyword. 16087 16088 Fixed a problem introduced in the 11_02_01 release where indirect 16089 stores through method arguments did not operate correctly. 16090 16091 2) Linux: 16092 16093 Implemented boot-time ACPI table parsing support 16094 (CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code 16095 facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than 16096 legacy BIOS interfaces (e.g. MPS) for the configuration of system 16097 processors, memory, and interrupts during setup_arch(). Note that 16098 this patch does not include the required architecture-specific 16099 changes required to apply this information -- subsequent patches 16100 will be posted for both IA32 and IA64 to achieve this. 16101 16102 Added low-level sleep support for IA32 platforms, courtesy of Pat 16103 Mochel. This allows IA32 systems to transition to/from various 16104 sleeping states (e.g. S1, S3), although the lack of a centralized 16105 driver model and power-manageable drivers will prevent its 16106 (successful) use on most systems. 16107 16108 Revamped the ACPI 'menuconfig' layout: created new "ACPI Support" 16109 submenu, unified IA32 and IA64 options, added new "Boot using ACPI 16110 tables" option, etc. 16111 16112 Increased the default timeout for the EC driver from 1ms to 10ms 16113 (1000 cycles of 10us) to try to address AE_TIME errors during EC 16114 transactions. 16115 16116 ---------------------------------------- 16117 Summary of changes for this label: 11_02_01 16118 16119 1) ACPI CA Core Subsystem: 16120 16121 ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access 16122 (QWordAcc keyword). All ACPI 2.0 64-bit support is now 16123 implemented. 16124 16125 OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required 16126 changes to support ACPI 2.0 Qword field access. Read/Write 16127 PciConfiguration(), Read/Write Memory(), and Read/Write Port() now 16128 accept an ACPI_INTEGER (64 bits) as the value parameter. Also, 16129 the value parameter for the address space handler interface is now 16130 an ACPI_INTEGER. OSL implementations of these interfaces must now 16131 handle the case where the Width parameter is 64. 16132 16133 Index Fields: Fixed a problem where unaligned bit assembly and 16134 disassembly for IndexFields was not supported correctly. 16135 16136 Index and Bank Fields: Nested Index and Bank Fields are now 16137 supported. During field access, a check is performed to ensure 16138 that the value written to an Index or Bank register is not out of 16139 the range of the register. The Index (or Bank) register is 16140 written before each access to the field data. Future support will 16141 include allowing individual IndexFields to be wider than the 16142 DataRegister width. 16143 16144 Fields: Fixed a problem where the AML interpreter was incorrectly 16145 attempting to write beyond the end of a Field/OpRegion. This was 16146 a boundary case that occurred when a DWORD field was written to a 16147 BYTE access OpRegion, forcing multiple writes and causing the 16148 interpreter to write one datum too many. 16149 16150 Fields: Fixed a problem with Field/OpRegion access where the 16151 starting bit address of a field was incorrectly calculated if the 16152 current access type was wider than a byte (WordAcc, DwordAcc, or 16153 QwordAcc). 16154 16155 Fields: Fixed a problem where forward references to individual 16156 FieldUnits (individual Field names within a Field definition) were 16157 not resolved during the AML table load. 16158 16159 Fields: Fixed a problem where forward references from a Field 16160 definition to the parent Operation Region definition were not 16161 resolved during the AML table load. 16162 16163 Fields: Duplicate FieldUnit names within a scope are now detected 16164 during AML table load. 16165 16166 Acpi Interfaces: Fixed a problem where the AcpiGetName() interface 16167 returned an incorrect name for the root node. 16168 16169 Code and Data Size: Code and Data optimizations have permitted new 16170 feature development with an actual reduction in the library size. 16171 Current core subsystem library sizes are shown below. These are 16172 the code and data sizes for the acpica.lib produced by the 16173 Microsoft Visual C++ 6.0 compiler, and these values do not include 16174 any ACPI driver or OSPM code. The debug version of the code 16175 includes the debug output trace mechanism and has a larger code 16176 and data size. Note that these values will vary depending on the 16177 efficiency of the compiler and the compiler options used during 16178 generation. 16179 16180 Previous Release (10_18_01): 16181 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 16182 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 16183 16184 Current Release: 16185 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 16186 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 16187 16188 2) Linux: 16189 16190 Improved /proc processor output (Pavel Machek) Re-added 16191 MODULE_LICENSE("GPL") to all modules. 16192 16193 3) ASL Compiler version X2030: 16194 16195 Duplicate FieldUnit names within a scope are now detected and 16196 flagged as errors. 16197 16198 4) Documentation: 16199 16200 Programmer Reference updated to reflect OSL and address space 16201 handler interface changes described above. 16202 16203 ---------------------------------------- 16204 Summary of changes for this label: 10_18_01 16205 16206 ACPI CA Core Subsystem: 16207 16208 Fixed a problem with the internal object reference count mechanism 16209 that occasionally caused premature object deletion. This resolves 16210 all of the outstanding problem reports where an object is deleted 16211 in the middle of an interpreter evaluation. Although this problem 16212 only showed up in rather obscure cases, the solution to the 16213 problem involved an adjustment of all reference counts involving 16214 objects attached to namespace nodes. 16215 16216 Fixed a problem with Field support in the interpreter where 16217 writing to an aligned field whose length is an exact multiple (2 16218 or greater) of the field access granularity would cause an attempt 16219 to write beyond the end of the field. 16220 16221 The top level AML opcode execution functions within the 16222 interpreter have been renamed with a more meaningful and 16223 consistent naming convention. The modules exmonad.c and 16224 exdyadic.c were eliminated. New modules are exoparg1.c, 16225 exoparg2.c, exoparg3.c, and exoparg6.c. 16226 16227 Support for the ACPI 2.0 "Mid" ASL operator has been implemented. 16228 16229 Fixed a problem where the AML debugger was causing some internal 16230 objects to not be deleted during subsystem termination. 16231 16232 Fixed a problem with the external AcpiEvaluateObject interface 16233 where the subsystem would fault if the named object to be 16234 evaluated refered to a constant such as Zero, Ones, etc. 16235 16236 Fixed a problem with IndexFields and BankFields where the 16237 subsystem would fault if the index, data, or bank registers were 16238 not defined in the same scope as the field itself. 16239 16240 Added printf format string checking for compilers that support 16241 this feature. Corrected more than 50 instances of issues with 16242 format specifiers within invocations of ACPI_DEBUG_PRINT 16243 throughout the core subsystem code. 16244 16245 The ASL "Revision" operator now returns the ACPI support level 16246 implemented in the core - the value "2" since the ACPI 2.0 support 16247 is more than 50% implemented. 16248 16249 Enhanced the output of the AML debugger "dump namespace" command 16250 to output in a more human-readable form. 16251 16252 Current core subsystem library code sizes are shown below. These 16253 16254 are the code and data sizes for the acpica.lib produced by the 16255 Microsoft Visual C++ 6.0 compiler, and these values do not include 16256 any ACPI driver or OSPM code. The debug version of the code 16257 includes the full debug trace mechanism -- leading to a much 16258 16259 larger code and data size. Note that these values will vary 16260 depending on the efficiency of the compiler and the compiler 16261 options used during generation. 16262 16263 Previous Label (09_20_01): 16264 Non-Debug Version: 65K Code, 5K Data, 70K Total 16265 Debug Version: 138K Code, 58K Data, 196K Total 16266 16267 This Label: 16268 16269 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 16270 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 16271 16272 Linux: 16273 16274 Implemented a "Bad BIOS Blacklist" to track machines that have 16275 known ASL/AML problems. 16276 16277 Enhanced the /proc interface for the thermal zone driver and added 16278 support for _HOT (the critical suspend trip point). The 'info' 16279 file now includes threshold/policy information, and allows setting 16280 of _SCP (cooling preference) and _TZP (polling frequency) values 16281 to the 'info' file. Examples: "echo tzp=5 > info" sets the polling 16282 frequency to 5 seconds, and "echo scp=1 > info" sets the cooling 16283 preference to the passive/quiet mode (if supported by the ASL). 16284 16285 Implemented a workaround for a gcc bug that resuted in an OOPs 16286 when loading the control method battery driver. 16287 16288 ---------------------------------------- 16289 Summary of changes for this label: 09_20_01 16290 16291 ACPI CA Core Subsystem: 16292 16293 The AcpiEnableEvent and AcpiDisableEvent interfaces have been 16294 modified to allow individual GPE levels to be flagged as wake- 16295 enabled (i.e., these GPEs are to remain enabled when the platform 16296 sleeps.) 16297 16298 The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now 16299 support wake-enabled GPEs. This means that upon entering the 16300 sleep state, all GPEs that are not wake-enabled are disabled. 16301 When leaving the sleep state, these GPEs are reenabled. 16302 16303 A local double-precision divide/modulo module has been added to 16304 enhance portability to OS kernels where a 64-bit math library is 16305 not available. The new module is "utmath.c". 16306 16307 Several optimizations have been made to reduce the use of CPU 16308 stack. Originally over 2K, the maximum stack usage is now below 16309 2K at 1860 bytes (1.82k) 16310 16311 Fixed a problem with the AcpiGetFirmwareTable interface where the 16312 root table pointer was not mapped into a logical address properly. 16313 16314 Fixed a problem where a NULL pointer was being dereferenced in the 16315 interpreter code for the ASL Notify operator. 16316 16317 Fixed a problem where the use of the ASL Revision operator 16318 returned an error. This operator now returns the current version 16319 of the ACPI CA core subsystem. 16320 16321 Fixed a problem where objects passed as control method parameters 16322 to AcpiEvaluateObject were always deleted at method termination. 16323 However, these objects may end up being stored into the namespace 16324 by the called method. The object reference count mechanism was 16325 applied to these objects instead of a force delete. 16326 16327 Fixed a problem where static strings or buffers (contained in the 16328 AML code) that are declared as package elements within the ASL 16329 code could cause a fault because the interpreter would attempt to 16330 delete them. These objects are now marked with the "static 16331 object" flag to prevent any attempt to delete them. 16332 16333 Implemented an interpreter optimization to use operands directly 16334 from the state object instead of extracting the operands to local 16335 variables. This reduces stack use and code size, and improves 16336 performance. 16337 16338 The module exxface.c was eliminated as it was an unnecessary extra 16339 layer of code. 16340 16341 Current core subsystem library code sizes are shown below. These 16342 are the code and data sizes for the acpica.lib produced by the 16343 Microsoft Visual C++ 6.0 compiler, and these values do not include 16344 any ACPI driver or OSPM code. The debug version of the code 16345 includes the full debug trace mechanism -- leading to a much 16346 larger code and data size. Note that these values will vary 16347 depending on the efficiency of the compiler and the compiler 16348 options used during generation. 16349 16350 Non-Debug Version: 65K Code, 5K Data, 70K Total 16351 (Previously 69K) Debug Version: 138K Code, 58K Data, 196K 16352 Total (Previously 195K) 16353 16354 Linux: 16355 16356 Support for ACPI 2.0 64-bit integers has been added. All ACPI 16357 Integer objects are now 64 bits wide 16358 16359 All Acpi data types and structures are now in lower case. Only 16360 Acpi macros are upper case for differentiation. 16361 16362 Documentation: 16363 16364 Changes to the external interfaces as described above. 16365 16366 ---------------------------------------- 16367 Summary of changes for this label: 08_31_01 16368 16369 ACPI CA Core Subsystem: 16370 16371 A bug with interpreter implementation of the ASL Divide operator 16372 was found and fixed. The implicit function return value (not the 16373 explicit store operands) was returning the remainder instead of 16374 the quotient. This was a longstanding bug and it fixes several 16375 known outstanding issues on various platforms. 16376 16377 The ACPI_DEBUG_PRINT and function trace entry/exit macros have 16378 been further optimized for size. There are 700 invocations of the 16379 DEBUG_PRINT macro alone, so each optimization reduces the size of 16380 the debug version of the subsystem significantly. 16381 16382 A stack trace mechanism has been implemented. The maximum stack 16383 usage is about 2K on 32-bit platforms. The debugger command "stat 16384 stack" will display the current maximum stack usage. 16385 16386 All public symbols and global variables within the subsystem are 16387 now prefixed with the string "Acpi". This keeps all of the 16388 symbols grouped together in a kernel map, and avoids conflicts 16389 with other kernel subsystems. 16390 16391 Most of the internal fixed lookup tables have been moved into the 16392 code segment via the const operator. 16393 16394 Several enhancements have been made to the interpreter to both 16395 reduce the code size and improve performance. 16396 16397 Current core subsystem library code sizes are shown below. These 16398 are the code and data sizes for the acpica.lib produced by the 16399 Microsoft Visual C++ 6.0 compiler, and these values do not include 16400 any ACPI driver or OSPM code. The debug version of the code 16401 includes the full debug trace mechanism which contains over 700 16402 invocations of the DEBUG_PRINT macro, 500 function entry macro 16403 invocations, and over 900 function exit macro invocations -- 16404 leading to a much larger code and data size. Note that these 16405 values will vary depending on the efficiency of the compiler and 16406 the compiler options used during generation. 16407 16408 Non-Debug Version: 64K Code, 5K Data, 69K Total 16409 Debug Version: 137K Code, 58K Data, 195K Total 16410 16411 Linux: 16412 16413 Implemented wbinvd() macro, pending a kernel-wide definition. 16414 16415 Fixed /proc/acpi/event to handle poll() and short reads. 16416 16417 ASL Compiler, version X2026: 16418 16419 Fixed a problem introduced in the previous label where the AML 16420 16421 code emitted for package objects produced packages with zero 16422 length. 16423 16424 ---------------------------------------- 16425 Summary of changes for this label: 08_16_01 16426 16427 ACPI CA Core Subsystem: 16428 16429 The following ACPI 2.0 ASL operators have been implemented in the 16430 AML interpreter (These are already supported by the Intel ASL 16431 compiler): ToDecimalString, ToHexString, ToString, ToInteger, and 16432 ToBuffer. Support for 64-bit AML constants is implemented in the 16433 AML parser, debugger, and disassembler. 16434 16435 The internal memory tracking mechanism (leak detection code) has 16436 been upgraded to reduce the memory overhead (a separate tracking 16437 block is no longer allocated for each memory allocation), and now 16438 supports all of the internal object caches. 16439 16440 The data structures and code for the internal object caches have 16441 been coelesced and optimized so that there is a single cache and 16442 memory list data structure and a single group of functions that 16443 implement generic cache management. This has reduced the code 16444 size in both the debug and release versions of the subsystem. 16445 16446 The DEBUG_PRINT macro(s) have been optimized for size and replaced 16447 by ACPI_DEBUG_PRINT. The syntax for this macro is slightly 16448 different, because it generates a single call to an internal 16449 function. This results in a savings of about 90 bytes per 16450 invocation, resulting in an overall code and data savings of about 16451 16% in the debug version of the subsystem. 16452 16453 Linux: 16454 16455 Fixed C3 disk corruption problems and re-enabled C3 on supporting 16456 machines. 16457 16458 Integrated low-level sleep code by Patrick Mochel. 16459 16460 Further tweaked source code Linuxization. 16461 16462 Other minor fixes. 16463 16464 ASL Compiler: 16465 16466 Support for ACPI 2.0 variable length packages is fixed/completed. 16467 16468 Fixed a problem where the optional length parameter for the ACPI 16469 2.0 ToString operator. 16470 16471 Fixed multiple extraneous error messages when a syntax error is 16472 detected within the declaration line of a control method. 16473 16474 ---------------------------------------- 16475 Summary of changes for this label: 07_17_01 16476 16477 ACPI CA Core Subsystem: 16478 16479 Added a new interface named AcpiGetFirmwareTable to obtain any 16480 ACPI table via the ACPI signature. The interface can be called at 16481 any time during kernel initialization, even before the kernel 16482 virtual memory manager is initialized and paging is enabled. This 16483 allows kernel subsystems to obtain ACPI tables very early, even 16484 before the ACPI CA subsystem is initialized. 16485 16486 Fixed a problem where Fields defined with the AnyAcc attribute 16487 could be resolved to the incorrect address under the following 16488 conditions: 1) the field width is larger than 8 bits and 2) the 16489 parent operation region is not defined on a DWORD boundary. 16490 16491 Fixed a problem where the interpreter is not being locked during 16492 namespace initialization (during execution of the _INI control 16493 methods), causing an error when an attempt is made to release it 16494 later. 16495 16496 ACPI 2.0 support in the AML Interpreter has begun and will be 16497 ongoing throughout the rest of this year. In this label, The Mod 16498 operator is implemented. 16499 16500 Added a new data type to contain full PCI addresses named 16501 ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device, 16502 and Function values. 16503 16504 Linux: 16505 16506 Enhanced the Linux version of the source code to change most 16507 capitalized ACPI type names to lowercase. For example, all 16508 instances of ACPI_STATUS are changed to acpi_status. This will 16509 result in a large diff, but the change is strictly cosmetic and 16510 aligns the CA code closer to the Linux coding standard. 16511 16512 OSL Interfaces: 16513 16514 The interfaces to the PCI configuration space have been changed to 16515 add the PCI Segment number and to split the single 32-bit combined 16516 DeviceFunction field into two 16-bit fields. This was 16517 accomplished by moving the four values that define an address in 16518 PCI configuration space (segment, bus, device, and function) to 16519 the new ACPI_PCI_ID structure. 16520 16521 The changes to the PCI configuration space interfaces led to a 16522 reexamination of the complete set of address space access 16523 interfaces for PCI, I/O, and Memory. The previously existing 18 16524 interfaces have proven difficult to maintain (any small change 16525 must be propagated across at least 6 interfaces) and do not easily 16526 allow for future expansion to 64 bits if necessary. Also, on some 16527 systems, it would not be appropriate to demultiplex the access 16528 width (8, 16, 32,or 64) before calling the OSL if the 16529 corresponding native OS interfaces contain a similar access width 16530 parameter. For these reasons, the 18 address space interfaces 16531 have been replaced by these 6 new ones: 16532 16533 AcpiOsReadPciConfiguration 16534 AcpiOsWritePciConfiguration 16535 AcpiOsReadMemory 16536 AcpiOsWriteMemory 16537 AcpiOsReadPort 16538 AcpiOsWritePort 16539 16540 Added a new interface named AcpiOsGetRootPointer to allow the OSL 16541 to perform the platform and/or OS-specific actions necessary to 16542 obtain the ACPI RSDP table pointer. On IA-32 platforms, this 16543 interface will simply call down to the CA core to perform the low- 16544 memory search for the table. On IA-64, the RSDP is obtained from 16545 EFI. Migrating this interface to the OSL allows the CA core to 16546 16547 remain OS and platform independent. 16548 16549 Added a new interface named AcpiOsSignal to provide a generic 16550 "function code and pointer" interface for various miscellaneous 16551 signals and notifications that must be made to the host OS. The 16552 first such signals are intended to support the ASL Fatal and 16553 Breakpoint operators. In the latter case, the AcpiOsBreakpoint 16554 interface has been obsoleted. 16555 16556 The definition of the AcpiFormatException interface has been 16557 changed to simplify its use. The caller no longer must supply a 16558 buffer to the call; A pointer to a const string is now returned 16559 directly. This allows the call to be easily used in printf 16560 statements, etc. since the caller does not have to manage a local 16561 buffer. 16562 16563 16564 ASL Compiler, Version X2025: 16565 16566 The ACPI 2.0 Switch/Case/Default operators have been implemented 16567 and are fully functional. They will work with all ACPI 1.0 16568 interpreters, since the operators are simply translated to If/Else 16569 pairs. 16570 16571 The ACPI 2.0 ElseIf operator is implemented and will also work 16572 with 1.0 interpreters, for the same reason. 16573 16574 Implemented support for ACPI 2.0 variable-length packages. These 16575 packages have a separate opcode, and their size is determined by 16576 the interpreter at run-time. 16577 16578 Documentation The ACPI CA Programmer Reference has been updated to 16579 reflect the new interfaces and changes to existing interfaces. 16580 16581 ------------------------------------------ 16582 Summary of changes for this label: 06_15_01 16583 16584 ACPI CA Core Subsystem: 16585 16586 Fixed a problem where a DWORD-accessed field within a Buffer 16587 object would get its byte address inadvertently rounded down to 16588 the nearest DWORD. Buffers are always Byte-accessible. 16589 16590 ASL Compiler, version X2024: 16591 16592 Fixed a problem where the Switch() operator would either fault or 16593 hang the compiler. Note however, that the AML code for this ACPI 16594 2.0 operator is not yet implemented. 16595 16596 Compiler uses the new AcpiOsGetTimer interface to obtain compile 16597 timings. 16598 16599 Implementation of the CreateField operator automatically converts 16600 a reference to a named field within a resource descriptor from a 16601 byte offset to a bit offset if required. 16602 16603 Added some missing named fields from the resource descriptor 16604 support. These are the names that are automatically created by the 16605 compiler to reference fields within a descriptor. They are only 16606 valid at compile time and are not passed through to the AML 16607 interpreter. 16608 16609 Resource descriptor named fields are now typed as Integers and 16610 subject to compile-time typechecking when used in expressions. 16611 16612 ------------------------------------------ 16613 Summary of changes for this label: 05_18_01 16614 16615 ACPI CA Core Subsystem: 16616 16617 Fixed a couple of problems in the Field support code where bits 16618 from adjacent fields could be returned along with the proper field 16619 bits. Restructured the field support code to improve performance, 16620 readability and maintainability. 16621 16622 New DEBUG_PRINTP macro automatically inserts the procedure name 16623 into the output, saving hundreds of copies of procedure name 16624 strings within the source, shrinking the memory footprint of the 16625 debug version of the core subsystem. 16626 16627 Source Code Structure: 16628 16629 The source code directory tree was restructured to reflect the 16630 current organization of the component architecture. Some files 16631 and directories have been moved and/or renamed. 16632 16633 Linux: 16634 16635 Fixed leaking kacpidpc processes. 16636 16637 Fixed queueing event data even when /proc/acpi/event is not 16638 opened. 16639 16640 ASL Compiler, version X2020: 16641 16642 Memory allocation performance enhancement - over 24X compile time 16643 improvement on large ASL files. Parse nodes and namestring 16644 buffers are now allocated from a large internal compiler buffer. 16645 16646 The temporary .SRC file is deleted unless the "-s" option is 16647 specified 16648 16649 The "-d" debug output option now sends all output to the .DBG file 16650 instead of the console. 16651 16652 "External" second parameter is now optional 16653 16654 "ElseIf" syntax now properly allows the predicate 16655 16656 Last operand to "Load" now recognized as a Target operand 16657 16658 Debug object can now be used anywhere as a normal object. 16659 16660 ResourceTemplate now returns an object of type BUFFER 16661 16662 EISAID now returns an object of type INTEGER 16663 16664 "Index" now works with a STRING operand 16665 16666 "LoadTable" now accepts optional parameters 16667 16668 "ToString" length parameter is now optional 16669 16670 "Interrupt (ResourceType," parse error fixed. 16671 16672 "Register" with a user-defined region space parse error fixed 16673 16674 Escaped backslash at the end of a string ("\\") scan/parse error 16675 fixed 16676 16677 "Revision" is now an object of type INTEGER. 16678 16679 16680 16681 ------------------------------------------ 16682 Summary of changes for this label: 05_02_01 16683 16684 Linux: 16685 16686 /proc/acpi/event now blocks properly. 16687 16688 Removed /proc/sys/acpi. You can still dump your DSDT from 16689 /proc/acpi/dsdt. 16690 16691 ACPI CA Core Subsystem: 16692 16693 Fixed a problem introduced in the previous label where some of the 16694 "small" resource descriptor types were not recognized. 16695 16696 Improved error messages for the case where an ASL Field is outside 16697 the range of the parent operation region. 16698 16699 ASL Compiler, version X2018: 16700 16701 16702 Added error detection for ASL Fields that extend beyond the length 16703 of the parent operation region (only if the length of the region 16704 is known at compile time.) This includes fields that have a 16705 minimum access width that is smaller than the parent region, and 16706 individual field units that are partially or entirely beyond the 16707 extent of the parent. 16708 16709 16710 16711 ------------------------------------------ 16712 Summary of changes for this label: 04_27_01 16713 16714 ACPI CA Core Subsystem: 16715 16716 Fixed a problem where the namespace mutex could be released at the 16717 wrong time during execution of AcpiRemoveAddressSpaceHandler. 16718 16719 Added optional thread ID output for debug traces, to simplify 16720 debugging of multiple threads. Added context switch notification 16721 when the debug code realizes that a different thread is now 16722 executing ACPI code. 16723 16724 Some additional external data types have been prefixed with the 16725 string "ACPI_" for consistency. This may effect existing code. 16726 The data types affected are the external callback typedefs - e.g., 16727 16728 WALK_CALLBACK becomes ACPI_WALK_CALLBACK. 16729 16730 Linux: 16731 16732 Fixed an issue with the OSL semaphore implementation where a 16733 thread was waking up with an error from receiving a SIGCHLD 16734 signal. 16735 16736 Linux version of ACPI CA now uses the system C library for string 16737 manipulation routines instead of a local implementation. 16738 16739 Cleaned up comments and removed TBDs. 16740 16741 ASL Compiler, version X2017: 16742 16743 Enhanced error detection and reporting for all file I/O 16744 operations. 16745 16746 Documentation: 16747 16748 Programmer Reference updated to version 1.06. 16749 16750 16751 16752 ------------------------------------------ 16753 Summary of changes for this label: 04_13_01 16754 16755 ACPI CA Core Subsystem: 16756 16757 Restructured support for BufferFields and RegionFields. 16758 BankFields support is now fully operational. All known 32-bit 16759 limitations on field sizes have been removed. Both BufferFields 16760 and (Operation) RegionFields are now supported by the same field 16761 management code. 16762 16763 Resource support now supports QWORD address and IO resources. The 16764 16/32/64 bit address structures and the Extended IRQ structure 16765 have been changed to properly handle Source Resource strings. 16766 16767 A ThreadId of -1 is now used to indicate a "mutex not acquired" 16768 condition internally and must never be returned by AcpiOsThreadId. 16769 This reserved value was changed from 0 since Unix systems allow a 16770 thread ID of 0. 16771 16772 Linux: 16773 16774 Driver code reorganized to enhance portability 16775 16776 Added a kernel configuration option to control ACPI_DEBUG 16777 16778 Fixed the EC driver to honor _GLK. 16779 16780 ASL Compiler, version X2016: 16781 16782 Fixed support for the "FixedHw" keyword. Previously, the FixedHw 16783 address space was set to 0, not 0x7f as it should be. 16784 16785 ------------------------------------------ 16786 Summary of changes for this label: 03_13_01 16787 16788 ACPI CA Core Subsystem: 16789 16790 During ACPI initialization, the _SB_._INI method is now run if 16791 present. 16792 16793 Notify handler fix - notifies are deferred until the parent method 16794 completes execution. This fixes the "mutex already acquired" 16795 issue seen occasionally. 16796 16797 Part of the "implicit conversion" rules in ACPI 2.0 have been 16798 found to cause compatibility problems with existing ASL/AML. The 16799 convert "result-to-target-type" implementation has been removed 16800 for stores to method Args and Locals. Source operand conversion 16801 is still fully implemented. Possible changes to ACPI 2.0 16802 specification pending. 16803 16804 Fix to AcpiRsCalculatePciRoutingTableLength to return correct 16805 length. 16806 16807 Fix for compiler warnings for 64-bit compiles. 16808 16809 Linux: 16810 16811 /proc output aligned for easier parsing. 16812 16813 Release-version compile problem fixed. 16814 16815 New kernel configuration options documented in Configure.help. 16816 16817 IBM 600E - Fixed Sleep button may generate "Invalid <NULL> 16818 context" message. 16819 16820 OSPM: 16821 16822 Power resource driver integrated with bus manager. 16823 16824 Fixed kernel fault during active cooling for thermal zones. 16825 16826 Source Code: 16827 16828 The source code tree has been restructured. 16829 16830 16831 16832 ------------------------------------------ 16833 Summary of changes for this label: 03_02_01 16834 16835 Linux OS Services Layer (OSL): 16836 16837 Major revision of all Linux-specific code. 16838 16839 Modularized all ACPI-specific drivers. 16840 16841 Added new thermal zone and power resource drivers. 16842 16843 Revamped /proc interface (new functionality is under /proc/acpi). 16844 16845 New kernel configuration options. 16846 16847 Linux known issues: 16848 16849 New kernel configuration options not documented in Configure.help 16850 yet. 16851 16852 16853 Module dependencies not currently implemented. If used, they 16854 should be loaded in this order: busmgr, power, ec, system, 16855 processor, battery, ac_adapter, button, thermal. 16856 16857 Modules will not load if CONFIG_MODVERSION is set. 16858 16859 IBM 600E - entering S5 may reboot instead of shutting down. 16860 16861 IBM 600E - Sleep button may generate "Invalid <NULL> context" 16862 message. 16863 16864 Some systems may fail with "execution mutex already acquired" 16865 message. 16866 16867 ACPI CA Core Subsystem: 16868 16869 Added a new OSL Interface, AcpiOsGetThreadId. This was required 16870 for the deadlock detection code. Defined to return a non-zero, 32- 16871 bit thread ID for the currently executing thread. May be a non- 16872 zero constant integer on single-thread systems. 16873 16874 Implemented deadlock detection for internal subsystem mutexes. We 16875 may add conditional compilation for this code (debug only) later. 16876 16877 ASL/AML Mutex object semantics are now fully supported. This 16878 includes multiple acquires/releases by owner and support for the 16879 16880 Mutex SyncLevel parameter. 16881 16882 A new "Force Release" mechanism automatically frees all ASL 16883 Mutexes that have been acquired but not released when a thread 16884 exits the interpreter. This forces conformance to the ACPI spec 16885 ("All mutexes must be released when an invocation exits") and 16886 prevents deadlocked ASL threads. This mechanism can be expanded 16887 (later) to monitor other resource acquisitions if OEM ASL code 16888 continues to misbehave (which it will). 16889 16890 Several new ACPI exception codes have been added for the Mutex 16891 support. 16892 16893 Recursive method calls are now allowed and supported (the ACPI 16894 spec does in fact allow recursive method calls.) The number of 16895 recursive calls is subject to the restrictions imposed by the 16896 SERIALIZED method keyword and SyncLevel (ACPI 2.0) method 16897 parameter. 16898 16899 Implemented support for the SyncLevel parameter for control 16900 methods (ACPI 2.0 feature) 16901 16902 Fixed a deadlock problem when multiple threads attempted to use 16903 the interpreter. 16904 16905 Fixed a problem where the string length of a String package 16906 element was not always set in a package returned from 16907 AcpiEvaluateObject. 16908 16909 Fixed a problem where the length of a String package element was 16910 not always included in the length of the overall package returned 16911 from AcpiEvaluateObject. 16912 16913 Added external interfaces (Acpi*) to the ACPI debug memory 16914 manager. This manager keeps a list of all outstanding 16915 allocations, and can therefore detect memory leaks and attempts to 16916 free memory blocks more than once. Useful for code such as the 16917 power manager, etc. May not be appropriate for device drivers. 16918 Performance with the debug code enabled is slow. 16919 16920 The ACPI Global Lock is now an optional hardware element. 16921 16922 ASL Compiler Version X2015: 16923 16924 Integrated changes to allow the compiler to be generated on 16925 multiple platforms. 16926 16927 Linux makefile added to generate the compiler on Linux 16928 16929 Source Code: 16930 16931 All platform-specific headers have been moved to their own 16932 subdirectory, Include/Platform. 16933 16934 New source file added, Interpreter/ammutex.c 16935 16936 New header file, Include/acstruct.h 16937 16938 Documentation: 16939 16940 The programmer reference has been updated for the following new 16941 interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree 16942 16943 ------------------------------------------ 16944 Summary of changes for this label: 02_08_01 16945 16946 Core ACPI CA Subsystem: Fixed a problem where an error was 16947 incorrectly returned if the return resource buffer was larger than 16948 the actual data (in the resource interfaces). 16949 16950 References to named objects within packages are resolved to the 16951 16952 full pathname string before packages are returned directly (via 16953 the AcpiEvaluateObject interface) or indirectly via the resource 16954 interfaces. 16955 16956 Linux OS Services Layer (OSL): 16957 16958 Improved /proc battery interface. 16959 16960 16961 Added C-state debugging output and other miscellaneous fixes. 16962 16963 ASL Compiler Version X2014: 16964 16965 All defined method arguments can now be used as local variables, 16966 including the ones that are not actually passed in as parameters. 16967 The compiler tracks initialization of the arguments and issues an 16968 exception if they are used without prior assignment (just like 16969 locals). 16970 16971 The -o option now specifies a filename prefix that is used for all 16972 output files, including the AML output file. Otherwise, the 16973 default behavior is as follows: 1) the AML goes to the file 16974 specified in the DSDT. 2) all other output files use the input 16975 source filename as the base. 16976 16977 ------------------------------------------ 16978 Summary of changes for this label: 01_25_01 16979 16980 Core ACPI CA Subsystem: Restructured the implementation of object 16981 store support within the interpreter. This includes support for 16982 the Store operator as well as any ASL operators that include a 16983 target operand. 16984 16985 Partially implemented support for Implicit Result-to-Target 16986 conversion. This is when a result object is converted on the fly 16987 to the type of an existing target object. Completion of this 16988 support is pending further analysis of the ACPI specification 16989 concerning this matter. 16990 16991 CPU-specific code has been removed from the subsystem (hardware 16992 directory). 16993 16994 New Power Management Timer functions added 16995 16996 Linux OS Services Layer (OSL): Moved system state transition code 16997 to the core, fixed it, and modified Linux OSL accordingly. 16998 16999 Fixed C2 and C3 latency calculations. 17000 17001 17002 We no longer use the compilation date for the version message on 17003 initialization, but retrieve the version from AcpiGetSystemInfo(). 17004 17005 Incorporated for fix Sony VAIO machines. 17006 17007 Documentation: The Programmer Reference has been updated and 17008 reformatted. 17009 17010 17011 ASL Compiler: Version X2013: Fixed a problem where the line 17012 numbering and error reporting could get out of sync in the 17013 presence of multiple include files. 17014 17015 ------------------------------------------ 17016 Summary of changes for this label: 01_15_01 17017 17018 Core ACPI CA Subsystem: 17019 17020 Implemented support for type conversions in the execution of the 17021 ASL Concatenate operator (The second operand is converted to 17022 match the type of the first operand before concatenation.) 17023 17024 Support for implicit source operand conversion is partially 17025 implemented. The ASL source operand types Integer, Buffer, and 17026 String are freely interchangeable for most ASL operators and are 17027 converted by the interpreter on the fly as required. Implicit 17028 Target operand conversion (where the result is converted to the 17029 target type before storing) is not yet implemented. 17030 17031 Support for 32-bit and 64-bit BCD integers is implemented. 17032 17033 Problem fixed where a field read on an aligned field could cause a 17034 read past the end of the field. 17035 17036 New exception, AE_AML_NO_RETURN_VALUE, is returned when a method 17037 does not return a value, but the caller expects one. (The ASL 17038 compiler flags this as a warning.) 17039 17040 ASL Compiler: 17041 17042 Version X2011: 17043 1. Static typechecking of all operands is implemented. This 17044 prevents the use of invalid objects (such as using a Package where 17045 an Integer is required) at compile time instead of at interpreter 17046 run-time. 17047 2. The ASL source line is printed with ALL errors and warnings. 17048 3. Bug fix for source EOF without final linefeed. 17049 4. Debug option is split into a parse trace and a namespace trace. 17050 5. Namespace output option (-n) includes initial values for 17051 integers and strings. 17052 6. Parse-only option added for quick syntax checking. 17053 7. Compiler checks for duplicate ACPI name declarations 17054 17055 Version X2012: 17056 1. Relaxed typechecking to allow interchangeability between 17057 strings, integers, and buffers. These types are now converted by 17058 the interpreter at runtime. 17059 2. Compiler reports time taken by each internal subsystem in the 17060 debug output file. 17061 17062 17063 ------------------------------------------ 17064 Summary of changes for this label: 12_14_00 17065 17066 ASL Compiler: 17067 17068 This is the first official release of the compiler. Since the 17069 compiler requires elements of the Core Subsystem, this label 17070 synchronizes everything. 17071 17072 ------------------------------------------ 17073 Summary of changes for this label: 12_08_00 17074 17075 17076 Fixed a problem where named references within the ASL definition 17077 of both OperationRegions and CreateXXXFields did not work 17078 properly. The symptom was an AE_AML_OPERAND_TYPE during 17079 initialization of the region/field. This is similar (but not 17080 related internally) to the problem that was fixed in the last 17081 label. 17082 17083 Implemented both 32-bit and 64-bit support for the BCD ASL 17084 functions ToBCD and FromBCD. 17085 17086 Updated all legal headers to include "2000" in the copyright 17087 years. 17088 17089 ------------------------------------------ 17090 Summary of changes for this label: 12_01_00 17091 17092 Fixed a problem where method invocations within the ASL definition 17093 of both OperationRegions and CreateXXXFields did not work 17094 properly. The symptom was an AE_AML_OPERAND_TYPE during 17095 initialization of the region/field: 17096 17097 nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments 17098 [DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s) 17099 (0x3005) 17100 17101 Fixed a problem where operators with more than one nested 17102 subexpression would fail. The symptoms were varied, by mostly 17103 AE_AML_OPERAND_TYPE errors. This was actually a rather serious 17104 problem that has gone unnoticed until now. 17105 17106 Subtract (Add (1,2), Multiply (3,4)) 17107 17108 Fixed a problem where AcpiGetHandle didn't quite get fixed in the 17109 previous build (The prefix part of a relative path was handled 17110 incorrectly). 17111 17112 Fixed a problem where Operation Region initialization failed if 17113 the operation region name was a "namepath" instead of a simple 17114 "nameseg". Symptom was an AE_NO_OPERAND error. 17115 17116 Fixed a problem where an assignment to a local variable via the 17117 indirect RefOf mechanism only worked for the first such 17118 assignment. Subsequent assignments were ignored. 17119 17120 ------------------------------------------ 17121 Summary of changes for this label: 11_15_00 17122 17123 ACPI 2.0 table support with backwards support for ACPI 1.0 and the 17124 0.71 extensions. Note: although we can read ACPI 2.0 BIOS tables, 17125 the AML interpreter does NOT have support for the new 2.0 ASL 17126 grammar terms at this time. 17127 17128 All ACPI hardware access is via the GAS structures in the ACPI 2.0 17129 FADT. 17130 17131 All physical memory addresses across all platforms are now 64 bits 17132 wide. Logical address width remains dependent on the platform 17133 (i.e., "void *"). 17134 17135 AcpiOsMapMemory interface changed to a 64-bit physical address. 17136 17137 The AML interpreter integer size is now 64 bits, as per the ACPI 17138 2.0 specification. 17139 17140 For backwards compatibility with ACPI 1.0, ACPI tables with a 17141 revision number less than 2 use 32-bit integers only. 17142 17143 Fixed a problem where the evaluation of OpRegion operands did not 17144 always resolve them to numbers properly. 17145 17146 ------------------------------------------ 17147 Summary of changes for this label: 10_20_00 17148 17149 Fix for CBN_._STA issue. This fix will allow correct access to 17150 CBN_ OpRegions when the _STA returns 0x8. 17151 17152 Support to convert ACPI constants (Ones, Zeros, One) to actual 17153 values before a package object is returned 17154 17155 Fix for method call as predicate to if/while construct causing 17156 incorrect if/while behavior 17157 17158 Fix for Else block package lengths sometimes calculated wrong (if 17159 block > 63 bytes) 17160 17161 Fix for Processor object length field, was always zero 17162 17163 Table load abort if FACP sanity check fails 17164 17165 Fix for problem with Scope(name) if name already exists 17166 17167 Warning emitted if a named object referenced cannot be found 17168 (resolved) during method execution. 17169 17170 17171 17172 17173 17174 ------------------------------------------ 17175 Summary of changes for this label: 9_29_00 17176 17177 New table initialization interfaces: AcpiInitializeSubsystem no 17178 longer has any parameters AcpiFindRootPointer - Find the RSDP (if 17179 necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP- 17180 >RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by 17181 AcpiLoadTables 17182 17183 Note: These interface changes require changes to all existing OSDs 17184 17185 The PCI_Config default address space handler is always installed 17186 at the root namespace object. 17187 17188 ------------------------------------------- 17189 Summary of changes for this label: 09_15_00 17190 17191 The new initialization architecture is implemented. New 17192 interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize) 17193 AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace 17194 17195 (Namespace is automatically loaded when a table is loaded) 17196 17197 The ACPI_OPERAND_OBJECT has been optimized to shrink its size from 17198 52 bytes to 32 bytes. There is usually one of these for every 17199 namespace object, so the memory savings is significant. 17200 17201 Implemented just-in-time evaluation of the CreateField operators. 17202 17203 Bug fixes for IA-64 support have been integrated. 17204 17205 Additional code review comments have been implemented 17206 17207 The so-called "third pass parse" has been replaced by a final walk 17208 through the namespace to initialize all operation regions (address 17209 spaces) and fields that have not yet been initialized during the 17210 execution of the various _INI and REG methods. 17211 17212 New file - namespace/nsinit.c 17213 17214 ------------------------------------------- 17215 Summary of changes for this label: 09_01_00 17216 17217 Namespace manager data structures have been reworked to change the 17218 primary object from a table to a single object. This has 17219 resulted in dynamic memory savings of 3X within the namespace and 17220 2X overall in the ACPI CA subsystem. 17221 17222 Fixed problem where the call to AcpiEvFindPciRootBuses was 17223 inadvertently left commented out. 17224 17225 Reduced the warning count when generating the source with the GCC 17226 compiler. 17227 17228 Revision numbers added to each module header showing the 17229 SourceSafe version of the file. Please refer to this version 17230 number when giving us feedback or comments on individual modules. 17231 17232 The main object types within the subsystem have been renamed to 17233 clarify their purpose: 17234 17235 ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT 17236 ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT 17237 ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE 17238 17239 NOTE: no changes to the initialization sequence are included in 17240 this label. 17241 17242 ------------------------------------------- 17243 Summary of changes for this label: 08_23_00 17244 17245 Fixed problem where TerminateControlMethod was being called 17246 multiple times per method 17247 17248 Fixed debugger problem where single stepping caused a semaphore to 17249 be oversignalled 17250 17251 Improved performance through additional parse object caching - 17252 added ACPI_EXTENDED_OP type 17253 17254 ------------------------------------------- 17255 Summary of changes for this label: 08_10_00 17256 17257 Parser/Interpreter integration: Eliminated the creation of 17258 complete parse trees for ACPI tables and control methods. 17259 Instead, parse subtrees are created and then deleted as soon as 17260 they are processed (Either entered into the namespace or executed 17261 by the interpreter). This reduces the use of dynamic kernel 17262 memory significantly. (about 10X) 17263 17264 Exception codes broken into classes and renumbered. Be sure to 17265 recompile all code that includes acexcep.h. Hopefully we won't 17266 have to renumber the codes again now that they are split into 17267 classes (environment, programmer, AML code, ACPI table, and 17268 internal). 17269 17270 Fixed some additional alignment issues in the Resource Manager 17271 subcomponent 17272 17273 Implemented semaphore tracking in the AcpiExec utility, and fixed 17274 several places where mutexes/semaphores were being unlocked 17275 without a corresponding lock operation. There are no known 17276 semaphore or mutex "leaks" at this time. 17277 17278 Fixed the case where an ASL Return operator is used to return an 17279 unnamed package. 17280 17281 ------------------------------------------- 17282 Summary of changes for this label: 07_28_00 17283 17284 Fixed a problem with the way addresses were calculated in 17285 AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem 17286 manifested itself when a Field was created with WordAccess or 17287 DwordAccess, but the field unit defined within the Field was less 17288 17289 than a Word or Dword. 17290 17291 Fixed a problem in AmlDumpOperands() module's loop to pull 17292 operands off of the operand stack to display information. The 17293 problem manifested itself as a TLB error on 64-bit systems when 17294 accessing an operand stack with two or more operands. 17295 17296 Fixed a problem with the PCI configuration space handlers where 17297 context was getting confused between accesses. This required a 17298 change to the generic address space handler and address space 17299 setup definitions. Handlers now get both a global handler context 17300 (this is the one passed in by the user when executing 17301 AcpiInstallAddressSpaceHandler() and a specific region context 17302 that is unique to each region (For example, the _ADR, _SEG and 17303 _BBN values associated with a specific region). The generic 17304 function definitions have changed to the following: 17305 17306 typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function, 17307 UINT32 Address, UINT32 BitWidth, UINT32 *Value, void 17308 *HandlerContext, // This used to be void *Context void 17309 *RegionContext); // This is an additional parameter 17310 17311 typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE 17312 RegionHandle, UINT32 Function, void *HandlerContext, void 17313 **RegionContext); // This used to be **ReturnContext 17314 17315 ------------------------------------------- 17316 Summary of changes for this label: 07_21_00 17317 17318 Major file consolidation and rename. All files within the 17319 interpreter have been renamed as well as most header files. This 17320 was done to prevent collisions with existing files in the host 17321 OSs -- filenames such as "config.h" and "global.h" seem to be 17322 quite common. The VC project files have been updated. All 17323 makefiles will require modification. 17324 17325 The parser/interpreter integration continues in Phase 5 with the 17326 implementation of a complete 2-pass parse (the AML is parsed 17327 twice) for each table; This avoids the construction of a huge 17328 parse tree and therefore reduces the amount of dynamic memory 17329 required by the subsystem. Greater use of the parse object cache 17330 means that performance is unaffected. 17331 17332 Many comments from the two code reviews have been rolled in. 17333 17334 The 64-bit alignment support is complete. 17335 17336 ------------------------------------------- 17337 Summary of changes for this label: 06_30_00 17338 17339 With a nod and a tip of the hat to the technology of yesteryear, 17340 we've added support in the source code for 80 column output 17341 devices. The code is now mostly constrained to 80 columns or 17342 less to support environments and editors that 1) cannot display 17343 or print more than 80 characters on a single line, and 2) cannot 17344 disable line wrapping. 17345 17346 A major restructuring of the namespace data structure has been 17347 completed. The result is 1) cleaner and more 17348 understandable/maintainable code, and 2) a significant reduction 17349 in the dynamic memory requirement for each named ACPI object 17350 (almost half). 17351 17352 ------------------------------------------- 17353 Summary of changes for this label: 06_23_00 17354 17355 Linux support has been added. In order to obtain approval to get 17356 the ACPI CA subsystem into the Linux kernel, we've had to make 17357 quite a few changes to the base subsystem that will affect all 17358 users (all the changes are generic and OS- independent). The 17359 effects of these global changes have been somewhat far reaching. 17360 Files have been merged and/or renamed and interfaces have been 17361 renamed. The major changes are described below. 17362 17363 Osd* interfaces renamed to AcpiOs* to eliminate namespace 17364 pollution/confusion within our target kernels. All OSD 17365 interfaces must be modified to match the new naming convention. 17366 17367 Files merged across the subsystem. A number of the smaller source 17368 and header files have been merged to reduce the file count and 17369 increase the density of the existing files. There are too many 17370 to list here. In general, makefiles that call out individual 17371 files will require rebuilding. 17372 17373 Interpreter files renamed. All interpreter files now have the 17374 prefix am* instead of ie* and is*. 17375 17376 Header files renamed: The acapi.h file is now acpixf.h. The 17377 acpiosd.h file is now acpiosxf.h. We are removing references to 17378 the acronym "API" since it is somewhat windowsy. The new name is 17379 "external interface" or xface or xf in the filenames.j 17380 17381 17382 All manifest constants have been forced to upper case (some were 17383 mixed case.) Also, the string "ACPI_" has been prepended to many 17384 (not all) of the constants, typedefs, and structs. 17385 17386 The globals "DebugLevel" and "DebugLayer" have been renamed 17387 "AcpiDbgLevel" and "AcpiDbgLayer" respectively. 17388 17389 All other globals within the subsystem are now prefixed with 17390 "AcpiGbl_" Internal procedures within the subsystem are now 17391 prefixed with "Acpi" (with only a few exceptions). The original 17392 two-letter abbreviation for the subcomponent remains after "Acpi" 17393 - for example, CmCallocate became AcpiCmCallocate. 17394 17395 Added a source code translation/conversion utility. Used to 17396 generate the Linux source code, it can be modified to generate 17397 other types of source as well. Can also be used to cleanup 17398 existing source by removing extraneous spaces and blank lines. 17399 Found in tools/acpisrc/* 17400 17401 OsdUnMapMemory was renamed to OsdUnmapMemory and then 17402 AcpiOsUnmapMemory. (UnMap became Unmap). 17403 17404 A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore. 17405 When set to one, this indicates that the caller wants to use the 17406 17407 semaphore as a mutex, not a counting semaphore. ACPI CA uses 17408 both types. However, implementers of this call may want to use 17409 different OS primitives depending on the type of semaphore 17410 requested. For example, some operating systems provide separate 17411 17412 "mutex" and "semaphore" interfaces - where the mutex interface is 17413 much faster because it doesn't have all the overhead of a full 17414 semaphore implementation. 17415 17416 Fixed a deadlock problem where a method that accesses the PCI 17417 address space can block forever if it is the first access to the 17418 space. 17419 17420 ------------------------------------------- 17421 Summary of changes for this label: 06_02_00 17422 17423 Support for environments that cannot handle unaligned data 17424 accesses (e.g. firmware and OS environments devoid of alignment 17425 handler technology namely SAL/EFI and the IA-64 Linux kernel) has 17426 been added (via configurable macros) in these three areas: - 17427 Transfer of data from the raw AML byte stream is done via byte 17428 moves instead of word/dword/qword moves. - External objects are 17429 aligned within the user buffer, including package elements (sub- 17430 objects). - Conversion of name strings to UINT32 Acpi Names is now 17431 done byte-wise. 17432 17433 The Store operator was modified to mimic Microsoft's 17434 implementation when storing to a Buffer Field. 17435 17436 Added a check of the BM_STS bit before entering C3. 17437 17438 The methods subdirectory has been obsoleted and removed. A new 17439 file, cmeval.c subsumes the functionality. 17440 17441 A 16-bit (DOS) version of AcpiExec has been developed. The 17442 makefile is under the acpiexec directory. 17443
Indexes created Tue Sep 30 17:09:57 GMT 2025