1---------------------------------------- 231 August 2017. Summary of changes for version 20170831: 3 4 51) ACPICA kernel-resident subsystem: 6 7Implemented internal support for full 64-bit addresses that appear in all 8Generic Address Structure (GAS) structures. Previously, only the lower 32 9bits were used. Affects the use of GAS structures in the FADT and other 10tables, as well as the GAS structures passed to the AcpiRead and 11AcpiWrite public external interfaces that are used by drivers. Lv Zheng. 12 13Added header support for the PDTT ACPI table (Processor Debug Trigger 14Table). Full support in the iASL Data Table Compiler and disassembler is 15forthcoming. 16 17 182) iASL Compiler/Disassembler and Tools: 19 20iASL/Disassembler: Fixed a problem with the PPTT ACPI table (Processor 21Properties Topology Table) where a flag bit was specified in the wrong 22bit position ("Line Size Valid", bit 6). 23 24iASL: Implemented support for Octal integer constants as defined by the 25ASL language grammar, per the ACPI specification. Any integer constant 26that 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 31iASL: Improved overflow detection for 64-bit string conversions during 32compilation of integer constants. "Overflow" in this case means a string 33that represents an integer that is too large to fit into a 64-bit value. 34Any 64-bit constants within a 32-bit DSDT or SSDT are still truncated to 35the low-order 32 bits with a warning, as previously implemented. Several 36new exceptions are defined that indicate a 64-bit overflow, as well as 37the 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 42iASL: Added a warning for the case where a ResourceTemplate is declared 43with no ResourceDescriptor entries (coded as "ResourceTemplate(){}"). In 44this case, the resulting template is created with a single END_TAG 45descriptor, which is essentially useless. 46 47iASL: Expanded the -vw option (ignore specific warnings/remarks) to 48include compilation error codes as well. 49 50---------------------------------------- 5128 July 2017. Summary of changes for version 20170728: 52 53 541) ACPICA kernel-resident subsystem: 55 56Fixed a regression seen with small resource descriptors that could cause 57an inadvertent AE_AML_NO_RESOURCE_END_TAG exception. 58 59AML interpreter: Implemented a new feature that allows forward references 60from individual named references within package objects that are 61contained within blocks of "module-level code". This provides 62compatibility with other ACPI implementations and supports existing 63firmware 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 76AML Interpreter: Fixed a problem with the Alias() operator where aliases 77to some ASL objects were not handled properly. Objects affected are: 78Mutex, Event, and OperationRegion. 79 80AML Debugger: Enhanced to properly handle AML Alias objects. These 81objects have one level of indirection which was not fully supported by 82the debugger. 83 84Table Manager: Added support to detect and ignore duplicate SSDTs within 85the XSDT/RSDT. This error in the XSDT has been seen in the field. 86 87EFI 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 94Added additional support for the _DMA predefined name. _DMA returns a 95buffer containing a resource template. This change add support within the 96resource manager (AcpiWalkResourceBuffer) to walk and parse this list of 97resource descriptors. Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> 98 99 1002) iASL Compiler/Disassembler and Tools: 101 102iASL: Fixed a problem where the internal input line buffer(s) could 103overflow if there are very long lines in the input ASL source code file. 104Implemented buffer management that automatically increases the size of 105the buffers as necessary. 106 107iASL: Added an option (-vx) to "expect" particular remarks, warnings and 108errors. If the specified exception is not raised during compilation, the 109compiler emits an error. This is intended to support the ASL test suite, 110but may be useful in other contexts. 111 112iASL: Implemented a new predefined macro, __METHOD__, which returns a 113string containing the name of the current control method that is being 114compiled. 115 116iASL: Implemented debugger and table compiler support for the SDEI ACPI 117table (Software Delegated Exception Interface). James Morse 118<james.morse@arm.com> 119 120Unix/Linux makefiles: Added an option to disable compile optimizations. 121The disable occurs when the NOOPT flag is set to TRUE. 122theracermaster@gmail.com 123 124Acpidump: Added support for multiple DSDT and FACS tables. This can occur 125when there are different tables for 32-bit versus 64-bit. 126 127Enhanced error reporting for the ASL test suite (ASLTS) by removing 128unnecessary/verbose text, and emit the actual line number where an error 129has occurred. These changes are intended to improve the usefulness of the 130test suite. 131 132---------------------------------------- 13329 June 2017. Summary of changes for version 20170629: 134 135 1361) ACPICA kernel-resident subsystem: 137 138Tables: Implemented a deferred ACPI table verification. This is useful 139for operating systems where the tables cannot be verified in the early 140initialization stage due to early memory mapping limitations on some 141architectures. Lv Zheng. 142 143Tables: Removed the signature validation for dynamically loaded tables. 144Provides compatibility with other ACPI implementations. Previously, only 145SSDT tables were allowed, as per the ACPI specification. Now, any table 146signature can be used via the Load() operator. Lv Zheng. 147 148Tables: Fixed several mutex issues that could cause errors during table 149acquisition. Lv Zheng. 150 151Tables: Fixed a problem where an ACPI warning could be generated if a 152null pointer was passed to the AcpiPutTable interface. Lv Zheng. 153 154Tables: Added a mechanism to handle imbalances for the AcpiGetTable and 155AcpiPutTable interfaces. This applies to the "late stage" table loading 156when the use of AcpiPutTable is no longer required (since the system 157memory manager is fully running and available). Lv Zheng. 158 159Fixed/Reverted a regression during processing of resource descriptors 160that contain only a single EndTag. Fixes an AE_AML_NO_RESOURCE_END_TAG 161exception in this case. 162 163Headers: IORT/SMMU support: Updated the SMMU models for Revision C of the 164I/O Remapping specification. Robin Murphy <robin.murphy@arm.com> 165 166Interpreter: Fixed a possible fault if an Alias operator with an invalid 167or duplicate target is encountered during Alias creation in 168AcpiExCreateAlias. Alex James <theracermaster@gmail.com> 169 170Added an option to use designated initializers for function pointers. 171Kees Cook <keescook@google.com> 172 173 1742) iASL Compiler/Disassembler and Tools: 175 176iASL: Allow compilation of External declarations with target pathnames 177that refer to existing named objects within the table. Erik Schmauss. 178 179iASL: Fixed a regression when compiling FieldUnits. Fixes an error if a 180FieldUnit name also is declared via External in the same table. Erik 181Schmauss. 182 183iASL: Allow existing scope names within pathnames used in External 184statements. For example: 185 External (ABCD.EFGH) // ABCD exists, but EFGH is truly external 186 Device (ABCD) 187 188iASL: IORT ACPI table: Implemented changes required to decode the new 189Proximity Domain for the SMMUv3 IORT. Disassembler and Data Table 190compiler. Ganapatrao Kulkarni <ganapatrao.kulkarni@cavium.com> 191 192Disassembler: Don't abort disassembly on errors from External() 193statements. Erik Schmauss. 194 195Disassembler: fixed a possible fault when one of the Create*Field 196operators references a Resource Template. ACPICA Bugzilla 1396. 197 198iASL: In the source code, resolved some naming inconsistences across the 199parsing support. Fixes confusion between "Parse Op" and "Parse Node". 200Adds a new file, aslparseop.c 201 202---------------------------------------- 20331 May 2017. Summary of changes for version 20170531: 204 205 2060) ACPI 6.2 support: 207 208The ACPI specification version 6.2 has been released and is available at 209http://uefi.org/specifications 210 211This version of ACPICA fully supports the ACPI 6.2 specification. Changes 212are summarized below. 213 214New 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 219New 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 224Simple updates for existing ACPI tables: 225 BGRT (two new flag bits) 226 HEST (New bit defined for several subtables, GHES_ASSIST) 227 228New 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 236New 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 242ASL 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 252Miscellaneous: 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 2601) ACPICA kernel-resident subsystem: 261 262Added support to disable ACPI events on hardware-reduced platforms. 263Eliminates error messages of the form "Could not enable fixed event". Lv 264Zheng 265 266Fixed a problem using Device/Thermal objects with the ObjectType and 267DerefOf ASL operators. This support had not been fully/properly 268implemented. 269 270Fixed a problem where if a Buffer object containing a resource template 271was longer than the actual resource template, an error was generated -- 272even though the AML is legal. This case has been seen in the field. 273 274Fixed a problem with the header definition of the MADT PCAT_COMPAT flag. 275The values for DUAL_PIC and MULTIPLE_APIC were reversed. 276 277Added header file changes for the TPM2 ACPI table. Update to new version 278of the TCG specification. Adds a new TPM2 subtable for ARM SMC. 279 280Exported the external interfaces AcpiAcquireMutex and AcpiReleaseMutex. 281These interfaces are intended to be used only in conjunction with the 282predefined _DLM method (Device Lock Method). "This object appears in a 283device scope when AML access to the device must be synchronized with the 284OS environment". 285 286Example Code and Data Size: These are the sizes for the OS-independent 287acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 288debug version of the code includes the debug output trace mechanism and 289has 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 2992) iASL Compiler/Disassembler and Tools: 300 301iASL: Fixed a problem where an External() declaration could not refer to 302a Field Unit. Erik Schmauss. 303 304Disassembler: Improved support for the Switch/Case operators. This 305feature will disassemble AML code back to the original Switch operators 306when possible, instead of an If..Else sequence. David Box 307 308iASL and disassembler: Improved the handling of multiple extraneous 309parentheses for both ASL input and disassembled ASL output. 310 311Improved the behavior of the iASL compiler and disassembler to detect 312improper use of external declarations 313 314Disassembler: Now aborts immediately upon detection of an unknown AML 315opcode. The AML parser has no real way to recover from this, and can 316result in the creation of an ill-formed parse tree that causes errors 317later during the disassembly. 318 319All tools: Fixed a problem where the Unix application OSL did not handle 320control-c correctly. For example, a control-c could incorrectly wake the 321debugger. 322 323AcpiExec: Improved the Control-C handling and added a handler for 324segmentation faults (SIGSEGV). Supports both Windows and Unix-like 325environments. 326 327Reduced the verbosity of the generic unix makefiles. Previously, each 328compilation displayed the full set of compiler options. This has been 329eliminated as the options are easily inspected within the makefiles. Each 330compilation now results in a single line of output. 331 332---------------------------------------- 33303 March 2017. Summary of changes for version 20170303: 334 335 3360) ACPICA licensing: 337 338The licensing information at the start of each source code module has 339been updated. In addition to the Intel license, the dual GPLv2/BSD 340license has been added for completeness. Now, a single version of the 341source code should be suitable for all ACPICA customers. This is the 342major change for this release since it affects all source code modules. 343 344 3451) ACPICA kernel-resident subsystem: 346 347Fixed two issues with the common asltypes.h header that could cause 348problems 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 3542) iASL Compiler/Disassembler and Tools: 355 356Disassembler: fixed a regression introduced in 20170224. A fix for a 357memory leak related to resource descriptor tags (names) could fault when 358the disassembler was generated with 64-bit compilers. 359 360The ASLTS test suite has been updated to implement a new testing 361architecture. During generation of the suite from ASL source, both the 362ASL and ASL+ compilers are now validated, as well as the disassembler 363itself (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---------------------------------------- 37324 February 2017. Summary of changes for version 20170224: 374 375 3761) ACPICA kernel-resident subsystem: 377 378Interpreter: Fixed two issues with the control method return value auto- 379repair feature, where an attempt to double-delete an internal object 380could result in an ACPICA warning (for _CID repair and others). No fault 381occurs, however, because the attempted deletion (actually a release to an 382internal cache) is detected and ignored via object poisoning. 383 384Debugger: Fixed an AML interpreter mutex issue during the single stepping 385of control methods. If certain debugger commands are executed during 386stepping, a mutex aquire/release error could occur. Lv Zheng. 387 388Fixed some issues generating ACPICA with the Intel C compiler by 389restoring the original behavior and compiler-specific include file in 390acenv.h. Lv Zheng. 391 392Example Code and Data Size: These are the sizes for the OS-independent 393acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 394debug version of the code includes the debug output trace mechanism and 395has 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 4052) iASL Compiler/Disassembler and Tools: 406 407iASL/Disassembler: A preliminary version of a new ASL-to-ASL+ conversion 408tool has been designed, implemented, and included in this release. The 409key feature of this utility is that the original comments within the 410input ASL file are preserved during the conversion process, and included 411within the converted ASL+ file -- thus creating a transparent conversion 412of existing ASL files to ASL+ (ASL 2.0). Erik Schmauss. 413 414 Usage: iasl -ca <ASL-filename> // Output is a .dsl file with 415converted code 416 417iASL/Disassembler: Improved the detection and correct disassembly of 418Switch/Case operators. This feature detects sequences of if/elseif/else 419operators that originated from ASL Switch/Case/Default operators and 420emits the original operators. David Box. 421 422iASL: Improved the IORT ACPI table support in the following areas. Lv 423Zheng: 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 428Disassembler: Enhanced the detection and disassembly of resource 429template/descriptor within a Buffer object. An EndTag descriptor is now 430required to have a zero second byte, since all known ASL compilers emit 431this. This helps eliminate incorrect decisions when a buffer is 432disassembled (false positives on resource templates). 433 434---------------------------------------- 43519 January 2017. Summary of changes for version 20170119: 436 437 4381) General ACPICA software: 439 440Entire source code base: Added the 2017 copyright to all source code 441legal/licensing module headers and utility/tool signons. This includes 442the standard Linux dual-license header. This affects virtually every file 443in the ACPICA core subsystem, iASL compiler, all ACPICA utilities, and 444the ACPICA test suite. 445 446 4472) iASL Compiler/Disassembler and Tools: 448 449iASL: Removed/fixed an inadvertent remark when a method argument 450containing a reference is used as a target operand within the method (and 451never 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 456All tools: Removed the bit width of the compiler that generated the tool 457from the common signon for all user space tools. This proved to be 458confusing and unnecessary. This includes similar removal of HARDWARE_NAME 459from 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---------------------------------------- 46922 December 2016. Summary of changes for version 20161222: 470 471 4721) ACPICA kernel-resident subsystem: 473 474AML Debugger: Implemented a new mechanism to simplify and enhance 475debugger integration into all environments, including kernel debuggers 476and user-space utilities, as well as remote debug services. This 477mechanism essentially consists of new OSL interfaces to support debugger 478initialization/termination, as well as wait/notify interfaces to perform 479the 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 490Update for Generic Address Space (GAS) support: Although the AccessWidth 491and/or BitOffset fields of the GAS are not often used, this change now 492fully supports these fields. This affects the internal support for FADT 493registers, registers in other ACPI data tables, and the AcpiRead and 494AcpiWrite public interfaces. Lv Zheng. 495 496Sleep support: In order to simplify integration of ACPI sleep for the 497various host operating systems, a new OSL interface has been introduced. 498AcpiOsEnterSleep allows the host to perform any required operations 499before the final write to the sleep control register(s) is performed by 500ACPICA. Lv Zheng. 501 502 New OSL interface: 503 AcpiOsEnterSleep(SleepState, RegisterAValue, RegisterBValue) 504 505 Called from these internal interfaces: 506 AcpiHwLegacySleep 507 AcpiHwExtendedSleep 508 509EFI support: Added a very small EFI/ACPICA example application. Provides 510a simple demo for EFI integration, as well as assisting with resolution 511of issues related to customer ACPICA/EFI integration. Lv Zheng. See: 512 513 source/tools/efihello/efihello.c 514 515Local C library: Implemented several new functions to enhance ACPICA 516portability, for environments where these clib functions are not 517available (such as EFI). Lv Zheng: 518 putchar 519 getchar 520 strpbrk 521 strtok 522 memmove 523 524Fixed a regression where occasionally a valid resource descriptor was 525incorrectly detected as invalid at runtime, and a 526AE_AML_NO_RESOURCE_END_TAG was returned. 527 528Fixed a problem with the recently implemented support that enables 529control method invocations as Target operands to many ASL operators. 530Warnings of this form: "Needed type [Reference], found [Processor]" were 531seen at runtime for some method invocations. 532 533Example Code and Data Size: These are the sizes for the OS-independent 534acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 535debug version of the code includes the debug output trace mechanism and 536has 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 5462) iASL Compiler/Disassembler and Tools: 547 548Disassembler: Enhanced output by adding the capability to detect and 549disassemble ASL Switch/Case statements back to the original ASL source 550code instead of if/else blocks. David Box. 551 552AcpiHelp: Split a large file into separate files based upon 553functionality/purpose. New files are: 554 ahaml.c 555 ahasl.c 556 557---------------------------------------- 55817 November 2016. Summary of changes for version 20161117: 559 560 5611) ACPICA kernel-resident subsystem: 562 563Table Manager: Fixed a regression introduced in 20160729, "FADT support 564cleanup". This was an attempt to remove all references in the source to 565the FADT version 2, which never was a legal version number. It was 566skipped because it was an early version of 64-bit support that was 567eventually abandoned for the current 64-bit support. 568 569Interpreter: Fixed a problem where runtime implicit conversion was 570incorrectly disabled for the ASL operators below. This brings the 571behavior into compliance with the ACPI specification: 572 FromBCD 573 ToBCD 574 ToDecimalString 575 ToHexString 576 ToInteger 577 ToBuffer 578 579Table Manager: Added a new public interface, AcpiPutTable, used to 580release and free an ACPI table returned by AcpiGetTable and related 581interfaces. Lv Zheng. 582 583Example Code and Data Size: These are the sizes for the OS-independent 584acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 585debug version of the code includes the debug output trace mechanism and 586has 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 5962) iASL Compiler/Disassembler and Tools: 597 598Disassembler: Fixed a regression for disassembly of Resource Template. 599Detection of templates in the AML stream missed some types of templates. 600 601iASL: Fixed a problem where an Access Size error was returned for the PCC 602address space when the AccessSize of the GAS register is greater than a 603DWORD. Hoan Tran. 604 605iASL: Implemented several grammar changes for the operators below. These 606changes 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 610that 611 do not return a reference (Changed TermArg to 612SuperName). 613 614iASL: Control method invocations are now allowed for Target operands, as 615per the ACPI specification. Removed error for using a control method 616invocation as a Target operand. 617 618Disassembler: Improved detection of Resource Templates, Unicode, and 619Strings within Buffer objects. These subtypes do not contain a specific 620opcode to indicate the originating ASL code, and they must be detected by 621other means within the disassembler. 622 623iASL: Implemented an optimization improvement for 32-bit ACPI tables 624(DSDT/SSDT). For the 32-bit case only, compute the optimum integer opcode 625only after 64-bit to 32-bit truncation. A truncation warning message is 626still emitted, however. 627 628AcpiXtract: Implemented handling for both types of line terminators (LF 629or CR/LF) so that it can accept AcpiDump output files from any system. 630Peter Wu. 631 632AcpiBin: 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---------------------------------------- 63730 September 2016. Summary of changes for version 20160930: 638 639 6401) ACPICA kernel-resident subsystem: 641 642Fixed a regression in the internal AcpiTbFindTable function where a non 643AE_OK exception could inadvertently be returned even if the function did 644not fail. This problem affects the following operators: 645 DataTableRegion 646 LoadTable 647 648Fixed a regression in the LoadTable operator where a load to any 649namespace location other than the root no longer worked properly. 650 651Increased the maximum loop count value that will result in the 652AE_AML_INFINITE_LOOP exception. This is a mechanism that is intended to 653prevent infinite loops within the AML interpreter and thus the host OS 654kernel. The value is increased from 0xFFFF to 0xFFFFF loops (65,535 to 6551,048,575). 656 657Moved the AcpiGbl_MaxLoopIterations configuration variable to the public 658acpixf.h file. This allows hosts to easily configure the maximum loop 659count at runtime. 660 661Removed an illegal character in the strtoul64.c file. This character 662caused errors with some C compilers. 663 664Example Code and Data Size: These are the sizes for the OS-independent 665acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 666debug version of the code includes the debug output trace mechanism and 667has 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 6772) iASL Compiler/Disassembler and Tools: 678 679Disassembler: Fixed a problem with the conversion of Else{If{ blocks into 680the simpler ASL ElseIf keyword. During the conversion, a trailing If 681block could be lost and missing from the disassembled output. 682 683iASL: Fixed a missing parser rule for the ObjectType operator. For ASL+, 684the missing rule caused a parse error when using the Index operator as an 685operand to ObjectType. This construct now compiles properly. Example: 686 ObjectType(PKG1[4]). 687 688iASL: Correctly handle unresolved symbols in the hardware map file (-lm 689option). Previously, unresolved symbols could cause a protection fault. 690Such symbols are now marked as unresolved in the map file. 691 692iASL: Implemented support to allow control method invocations as an 693operand to the ASL DeRefOf operator. Example: 694 DeRefOf(MTH1(Local0)) 695 696Disassembler: Improved support for the ToPLD ASL macro. Detection of a 697possible _PLD buffer now includes examination of both the normal buffer 698length (16 or 20) as well as the surrounding AML package length. 699 700Disassembler: Fixed a problem with the decoding of complex expressions 701within the Divide operator for ASL+. For the case where both the quotient 702and remainder targets are specified, the entire statement cannot be 703disassembled. Previously, the output incorrectly contained a mix of ASL- 704and ASL+ operators. This mixed statement causes a syntax error when 705compiled. Example: 706 Divide (Add (INT1, 6), 128, RSLT, QUOT) // was incorrectly 707disassembled to: 708 Divide (INT1 + 6, 128, RSLT, QUOT) 709 710iASL/Tools: Added support to process AML and non-AML ACPI tables 711consistently. For the disassembler and AcpiExec, allow all types of ACPI 712tables (AML and data tables). For the iASL -e option, allow only AML 713tables (DSDT/SSDT). 714 715---------------------------------------- 71631 August 2016. Summary of changes for version 20160831: 717 718 7191) ACPICA kernel-resident subsystem: 720 721Improve support for the so-called "module-level code", which is defined 722to be math, logical and control AML opcodes that appear outside of any 723control method. This change improves the support by adding more opcodes 724that can be executed in the manner. Some other issues have been solved, 725and the ASL grammar changes to support such code under all scope 726operators (Device, etc.) are complete. Lv Zheng. 727 728UEFI support: these OSL functions have been implemented. This is an 729additional step toward supporting the AcpiExec utility natively (with 730full hardware access) under UEFI. Marcelo Ferreira. 731 AcpiOsReadPciConfiguration 732 AcpiOsWritePciConfiguration 733 734Fixed a possible mutex error during control method auto-serialization. Lv 735Zheng. 736 737Updated support for the Generic Address Structure by fully implementing 738all GAS fields when a 32-bit address is expanded to a 64-bit GAS. Lv 739Zheng. 740 741Updated the return value for the internal _OSI method. Instead of 7420xFFFFFFFF, the "Ones" value is now returned, which is 0xFFFFFFFFFFFFFFFF 743for 64-bit ACPI tables. This fixes an incompatibility with other ACPI 744implementations, and will be reflected and clarified in the next version 745of the ACPI specification. 746 747Implemented two new table events that can be passed to an ACPICA table 748handler. These events are used to indicate a table installation or 749uninstallation. These events are used in addition to existed table load 750and unload events. Lv Zheng. 751 752Implemented a cleanup for all internal string-to-integer conversions. 753Consolidate multiple versions of this functionality and limit possible 754bases to either 10 or 16 to simplify the code. Adds a new file, 755utstrtoul64. 756 757Cleanup the inclusion order of the various compiler-specific headers. 758This simplifies build configuration management. The compiler-specific 759headers are now split out from the host-specific headers. Lv Zheng. 760 761Example Code and Data Size: These are the sizes for the OS-independent 762acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 763debug version of the code includes the debug output trace mechanism and 764has 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 7712) iASL Compiler/Disassembler and Tools: 772 773iASL/AcpiExec: Added a command line option to display the build date/time 774of the tool (-vd). This can be useful to verify that the correct version 775of the tools are being used. 776 777AML Debugger: Implemented a new subcommand ("execute predef") to execute 778all predefined control methods and names within the current namespace. 779This can be useful for debugging problems with ACPI tables and the ACPI 780namespace. 781 782---------------------------------------- 78329 July 2016. Summary of changes for version 20160729: 784 785 7861) ACPICA kernel-resident subsystem: 787 788Implemented basic UEFI support for the various ACPICA tools. This 789includes: 7901) An OSL to implement the various AcpiOs* interfaces on UEFI. 7912) Support to obtain the ACPI tables on UEFI. 7923) Local implementation of required C library functions not available on 793UEFI. 7944) A front-end (main) function for the tools for UEFI-related 795initialization. 796 797The initial deployment of this support is the AcpiDump utility executing 798as an UEFI application via EDK2 (EDKII, "UEFI Firmware Development Kit"). 799Current environments supported are Linux/Unix. MSVC generation is not 800supported at this time. See the generate/efi/README file for build 801instructions. Lv Zheng. 802 803Future plans include porting the AcpiExec utility to execute natively on 804the platform with I/O and memory access. This will allow viewing/dump of 805the platform namespace and native execution of ACPI control methods that 806access the actual hardware. To fully implement this support, the OSL 807functions below must be implemented with UEFI interfaces. Any community 808help in the implementation of these functions would be appreciated: 809 AcpiOsReadPort 810 AcpiOsWritePort 811 AcpiOsReadMemory 812 AcpiOsWriteMemory 813 AcpiOsReadPciConfiguration 814 AcpiOsWritePciConfiguration 815 816Restructured and standardized the C library configuration for ACPICA, 817resulting in the various configuration options below. This includes a 818global restructuring of the compiler-dependent and platform-dependent 819include files. These changes may affect the existing platform-dependent 820configuration files on some hosts. Lv Zheng. 821 822The current C library configuration options appear below. For any issues, 823it may be helpful to examine the existing compiler-dependent and 824platform-dependent files as examples. Lv Zheng. 825 8261) Linux kernel: 827 ACPI_USE_STANDARD_HEADERS=n in order not to use system-provided C 828library. 829 ACPI_USE_SYSTEM_CLIBRARY=y in order not to use ACPICA mini C library. 8302) Unix/Windows/BSD applications: 831 ACPI_USE_STANDARD_HEADERS=y in order to use system-provided C 832library. 833 ACPI_USE_SYSTEM_CLIBRARY=y in order not to use ACPICA mini C library. 8343) UEFI applications: 835 ACPI_USE_STANDARD_HEADERS=n in order not to use system-provided C 836library. 837 ACPI_USE_SYSTEM_CLIBRARY=n in order to use ACPICA mini C library. 8384) 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 843AML interpreter: "module-level code" support. Allows for execution of so- 844called "executable" AML code (math/logical operations, etc.) outside of 845control methods not just at the module level (top level) but also within 846any scope declared outside of a control method - Scope{}, Device{}, 847Processor{}, PowerResource{}, and ThermalZone{}. Lv Zheng. 848 849Simplified the configuration of the "maximum AML loops" global option by 850adding a global public variable, "AcpiGbl_MaxLoopIterations" which can be 851modified at runtime. 852 853 854Example Code and Data Size: These are the sizes for the OS-independent 855acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 856debug version of the code includes the debug output trace mechanism and 857has 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 8642) iASL Compiler/Disassembler and Tools: 865 866iASL: Add full support for the RASF ACPI table (RAS Features Table). 867Includes disassembler, data table compiler, and header support. 868 869iASL Expand "module-level code" support. Allows for 870compilation/disassembly of so-called "executable" AML code (math/logical 871operations, etc.) outside of control methods not just at the module level 872(top level) but also within any scope declared outside of a control 873method - Scope{}, Device{}, Processor{}, PowerResource{}, and 874ThermalZone{}. 875 876AcpiDump: Added support for dumping all SSDTs on newer versions of 877Windows. These tables are now easily available -- SSDTs are not available 878through the registry on older versions. 879 880---------------------------------------- 88127 May 2016. Summary of changes for version 20160527: 882 883 8841) ACPICA kernel-resident subsystem: 885 886Temporarily reverted the new arbitrary bit length/alignment support in 887AcpiHwRead/AcpiHwWrite for the Generic Address Structure. There have been 888a number of regressions with the new code that need to be fully resolved 889and tested before this support can be finally integrated into ACPICA. 890Apologies for any inconveniences these issues may have caused. 891 892The ACPI message macros are not configurable (ACPI_MSG_ERROR, 893ACPI_MSG_EXCEPTION, ACPI_MSG_WARNING, ACPI_MSG_INFO, ACPI_MSG_BIOS_ERROR, 894and ACPI_MSG_BIOS_WARNING). Lv Zheng. 895 896Fixed a couple of GCC warnings associated with the use of the -Wcast-qual 897option. Adds a new return macro, return_STR. Junk-uk Kim. 898 899Example Code and Data Size: These are the sizes for the OS-independent 900acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 901debug version of the code includes the debug output trace mechanism and 902has 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---------------------------------------- 91222 April 2016. Summary of changes for version 20160422: 913 9141) ACPICA kernel-resident subsystem: 915 916Fixed a regression in the GAS (generic address structure) arbitrary bit 917support in AcpiHwRead/AcpiHwWrite. Problem could cause incorrect behavior 918and incorrect return values. Lv Zheng. ACPICA BZ 1270. 919 920ACPI 6.0: Added support for new/renamed resource macros. One new argument 921was added to each of these macros, and the original name has been 922deprecated. The AML disassembler will always disassemble to the new 923names. Support for the new macros was added to iASL, disassembler, 924resource manager, and the acpihelp utility. ACPICA BZ 1274. 925 926 I2cSerialBus -> I2cSerialBusV2 927 SpiSerialBus -> SpiSerialBusV2 928 UartSerialBus -> UartSerialBusV2 929 930ACPI 6.0: Added support for a new integer field that was appended to the 931package object returned by the _BIX method. This adds iASL compile-time 932and AML runtime error checking. ACPICA BZ 1273. 933 934ACPI 6.1: Added support for a new PCCT subtable, "HW-Reduced Comm 935Subspace Type2" (Headers, Disassembler, and data table compiler). 936 937Example Code and Data Size: These are the sizes for the OS-independent 938acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 939debug version of the code includes the debug output trace mechanism and 940has 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 9502) iASL Compiler/Disassembler and Tools: 951 952iASL: Implemented an ASL grammar extension to allow/enable executable 953"module-level code" to be created and executed under the various 954operators that create new scopes. This type of AML code is already 955supported in all known AML interpreters, and the grammar change will 956appear in the next version of the ACPI specification. Simplifies the 957conditional runtime creation of named objects under these object types: 958 959 Device 960 PowerResource 961 Processor 962 Scope 963 ThermalZone 964 965iASL: Implemented a new ASL extension, a "For" loop macro to add greater 966ease-of-use to the ASL language. The syntax is similar to the 967corresponding C operator, and is implemented with the existing AML While 968opcode -- thus requiring no changes to existing AML interpreters. 969 970 For (Initialize, Predicate, Update) {TermList} 971 972Grammar: 973 ForTerm := 974 For ( 975 Initializer // Nothing | TermArg => ComputationalData 976 Predicate // Nothing | TermArg => ComputationalData 977 Update // Nothing | TermArg => ComputationalData 978 ) {TermList} 979 980 981iASL: The _HID/_ADR detection and validation has been enhanced to search 982under conditionals in order to allow these objects to be conditionally 983created at runtime. 984 985iASL: Fixed several issues with the constant folding feature. The 986improvement allows better detection and resolution of statements that can 987be folded at compile time. ACPICA BZ 1266. 988 989iASL/Disassembler: Fixed a couple issues with the Else{If{}...} 990conversion to the ASL ElseIf operator where incorrect ASL code could be 991generated. 992 993iASL/Disassembler: Fixed a problem with the ASL+ code disassembly where 994sometimes an extra (and extraneous) set of parentheses were emitted for 995some combinations of operators. Although this did not cause any problems 996with recompilation of the disassembled code, it made the code more 997difficult to read. David Box. ACPICA BZ 1231. 998 999iASL: Changed to ignore the unreferenced detection for predefined names 1000of resource descriptor elements, when the resource descriptor is 1001created/defined within a control method. 1002 1003iASL: Disassembler: Fix a possible fault with externally declared Buffer 1004objects. 1005 1006---------------------------------------- 100718 March 2016. Summary of changes for version 20160318: 1008 10091) ACPICA kernel-resident subsystem: 1010 1011Added support for arbitrary bit lengths and bit offsets for registers 1012defined by the Generic Address Structure. Previously, only aligned bit 1013lengths of 8/16/32/64 were supported. This was sufficient for many years, 1014but recently some machines have been seen that require arbitrary bit- 1015level support. ACPICA BZ 1240. Lv Zheng. 1016 1017Fixed an issue where the \_SB._INI method sometimes must be evaluated 1018before any _REG methods are evaluated. Lv Zheng. 1019 1020Implemented several changes related to ACPI table support 1021(Headers/Disassembler/TableCompiler): 1022NFIT: For ACPI 6.1, updated to add some additional new fields and 1023constants. 1024FADT: Updated a warning message and set compliance to ACPI 6.1 (Version 10256). 1026DMAR: Added new constants per the 10/2014 DMAR spec. 1027IORT: Added new subtable per the 10/2015 IORT spec. 1028HEST: For ACPI 6.1, added new constants and new subtable. 1029DBG2: Added new constants per the 12/2015 DBG2 spec. 1030FPDT: Fixed several incorrect fields, add the FPDT boot record structure. 1031ACPICA BZ 1249. 1032ERST/EINJ: Updated disassembler with new "Execute Timings" actions. 1033 1034Updated header support for the DMAR table to match the current version of 1035the related spec. 1036 1037Added extensions to the ASL Concatenate operator to allow any ACPI object 1038to be passed as an operand. Any object other than Integer/String/Buffer 1039simply returns a string containing the object type. This extends the 1040usefulness of the Printf macros. Previously, Concatenate would abort the 1041control method if a non-data object was encountered. 1042 1043ACPICA source code: Deployed the C "const" keyword across the source code 1044where appropriate. ACPICA BZ 732. Joerg Sonnenberger (NetBSD). 1045 1046Example Code and Data Size: These are the sizes for the OS-independent 1047acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1048debug version of the code includes the debug output trace mechanism and 1049has 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 10592) iASL Compiler/Disassembler and Tools: 1060 1061iASL/Disassembler: Improved the heuristic used to determine the number of 1062arguments for an externally defined control method (a method in another 1063table). 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 1065will completely solve this problem as it is deployed (automatically) in 1066newer BIOS code. 1067 1068iASL/Disassembler: Fixed an ordering issue for emitted External() ASL 1069statements that could cause errors when the disassembled file is 1070compiled. ACPICA BZ 1243. David Box. 1071 1072iASL: Fixed a regression caused by the merger of the two versions of the 1073local strtoul64. Because of a dependency on a global variable, strtoul64 1074could return an error for integers greater than a 32-bit value. ACPICA BZ 10751260. 1076 1077iASL: Fixed a regression where a fault could occur for an ASL Return 1078statement if it invokes a control method that is not resolved. ACPICA BZ 10791264. 1080 1081AcpiXtract: Improved input file validation: detection of binary files and 1082non-acpidump text files. 1083 1084---------------------------------------- 108512 February 2016. Summary of changes for version 20160212: 1086 10871) ACPICA kernel-resident subsystem: 1088 1089Implemented full support for the ACPI 6.1 specification (released in 1090January). This version of the specification is available at: 1091http://www.uefi.org/specifications 1092 1093Only a relatively small number of changes were required in ACPICA to 1094support 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 1100Ensure \_SB_._INI is executed before any _REG methods are executed. There 1101appears to be existing BIOS code that relies on this behavior. Lv Zheng. 1102 1103Reverted a change made in version 20151218 which enabled method 1104invocations to be targets of various ASL operators (SuperName and Target 1105grammar elements). While the new behavior is supported by the ACPI 1106specification, other AML interpreters do not support this behavior and 1107never will. The ACPI specification will be updated for ACPI 6.2 to remove 1108this support. Therefore, the change was reverted to the original ACPICA 1109behavior. 1110 1111ACPICA now supports the GCC 6 compiler. 1112 1113Current 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 1116Previous 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 11212) iASL Compiler/Disassembler and Tools: 1122 1123Completed full support for the ACPI 6.0 External() AML opcode. The 1124compiler emits an external AML opcode for each ASL External statement. 1125This opcode is used by the disassembler to assist with the disassembly of 1126external control methods by specifying the required number of arguments 1127for the method. AML interpreters do not use this opcode. To ensure that 1128interpreters do not even see the opcode, a block of one or more external 1129opcodes is surrounded by an "If(0)" construct. As this feature becomes 1130commonly deployed in BIOS code, the ability of disassemblers to correctly 1131disassemble AML code will be greatly improved. David Box. 1132 1133iASL: Implemented support for an optional cross-reference output file. 1134The -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 1140iASL: Method invocations as ASL Target operands are now disallowed and 1141flagged as errors in preparation for ACPI 6.2 (see the description of the 1142problem above). 1143 1144---------------------------------------- 11458 January 2016. Summary of changes for version 20160108: 1146 11471) ACPICA kernel-resident subsystem: 1148 1149Updated all ACPICA copyrights and signons to 2016: Added the 2016 1150copyright to all source code module headers and utility/tool signons. 1151This includes the standard Linux dual-license header. This affects 1152virtually every file in the ACPICA core subsystem, iASL compiler, all 1153ACPICA utilities, and the ACPICA test suite. 1154 1155Fixed a regression introduced in version 20151218 concerning the 1156execution of so-called module-level ASL/AML code. Namespace objects 1157created under a module-level If() construct were not properly/fully 1158entered into the namespace and could cause an interpreter fault when 1159accessed. 1160 1161Example Code and Data Size: These are the sizes for the OS-independent 1162acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1163debug version of the code includes the debug output trace mechanism and 1164has a much larger code and data size. 1165 1166Current 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 11742) iASL Compiler/Disassembler and Tools: 1175 1176Fixed a problem with the compilation of the GpioIo and GpioInt resource 1177descriptors. The _PIN field name was incorrectly defined to be an array 1178of 32-bit values, but the _PIN values are in fact 16 bits each. This 1179would cause incorrect bit width warnings when using Word (16-bit) fields 1180to access the descriptors. 1181 1182 1183---------------------------------------- 118418 December 2015. Summary of changes for version 20151218: 1185 11861) ACPICA kernel-resident subsystem: 1187 1188Implemented per-AML-table execution of "module-level code" as individual 1189ACPI tables are loaded into the namespace during ACPICA initialization. 1190In other words, any module-level code within an AML table is executed 1191immediately after the table is loaded, instead of batched and executed 1192after all of the tables have been loaded. This provides compatibility 1193with other ACPI implementations. ACPICA BZ 1219. Bob Moore, Lv Zheng, 1194David Box. 1195 1196To fully support the feature above, the default operation region handlers 1197for the SystemMemory, SystemIO, and PCI_Config address spaces are now 1198installed before any ACPI tables are loaded. This enables module-level 1199code to access these address spaces during the table load and module- 1200level code execution phase. ACPICA BZ 1220. Bob Moore, Lv Zheng, David 1201Box. 1202 1203Implemented several changes to the internal _REG support in conjunction 1204with the changes above. Also, changes to the AcpiExec/AcpiNames/Examples 1205utilities for the changes above. Although these tools were changed, host 1206operating systems that simply use the default handlers for SystemMemory, 1207SystemIO, and PCI_Config spaces should not require any update. Lv Zheng. 1208 1209For example, in the code below, DEV1 is conditionally added to the 1210namespace by the DSDT via module-level code that accesses an operation 1211region. The SSDT references DEV1 via the Scope operator. DEV1 must be 1212created immediately after the DSDT is loaded in order for the SSDT to 1213successfully reference DEV1. Previously, this code would cause an 1214AE_NOT_EXIST exception during the load of the SSDT. Now, this code is 1215fully 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 1239Fixed an AML interpreter problem where control method invocations were 1240not handled correctly when the invocation was itself a SuperName argument 1241to another ASL operator. In these cases, the method was not invoked. 1242ACPICA BZ 1002. Affects the following ASL operators that have a SuperName 1243argument: 1244 Store 1245 Acquire, Wait 1246 CondRefOf, RefOf 1247 Decrement, Increment 1248 Load, Unload 1249 Notify 1250 Signal, Release, Reset 1251 SizeOf 1252 1253Implemented automatic String-to-ObjectReference conversion support for 1254packages returned by predefined names (such as _DEP). A common BIOS error 1255is to add double quotes around an ObjectReference namepath, which turns 1256the reference into an unexpected string object. This support detects the 1257problem and corrects it before the package is returned to the caller that 1258invoked the method. Lv Zheng. 1259 1260Implemented extensions to the Concatenate operator. Concatenate now 1261accepts any type of object, it is not restricted to simply 1262Integer/String/Buffer. For objects other than these 3 basic data types, 1263the argument is treated as a string containing the name of the object 1264type. This expands the utility of Concatenate and the Printf/Fprintf 1265macros. ACPICA BZ 1222. 1266 1267Cleaned up the output of the ASL Debug object. The timer() value is now 1268optional and no longer emitted by default. Also, the basic data types of 1269Integer/String/Buffer are simply emitted as their values, without a data 1270type string -- since the data type is obvious from the output. ACPICA BZ 12711221. 1272 1273Example Code and Data Size: These are the sizes for the OS-independent 1274acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1275debug version of the code includes the debug output trace mechanism and 1276has 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 12862) iASL Compiler/Disassembler and Tools: 1287 1288iASL: Fixed some issues with the ASL Include() operator. This operator 1289was incorrectly defined in the iASL parser rules, causing a new scope to 1290be opened for the code within the include file. This could lead to 1291several issues, including allowing ASL code that is technically illegal 1292and not supported by AML interpreters. Note, this does not affect the 1293related #include preprocessor operator. ACPICA BZ 1212. 1294 1295iASL/Disassembler: Implemented support for the ASL ElseIf operator. This 1296operator is essentially an ASL macro since there is no AML opcode 1297associated with it. The code emitted by the iASL compiler for ElseIf is 1298an Else opcode followed immediately by an If opcode. The disassembler 1299will now emit an ElseIf if it finds an Else immediately followed by an 1300If. This simplifies the decoded ASL, especially for deeply nested 1301If..Else and large Switch constructs. Thus, the disassembled code more 1302closely 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 1319AcpiExec: Added support for the new module level code behavior and the 1320early region installation. This required a small change to the 1321initialization, since AcpiExec must install its own operation region 1322handlers. 1323 1324AcpiExec: Added support to make the debug object timer optional. Default 1325is timer disabled. This cleans up the debug object output -- the timer 1326data is rarely used. 1327 1328AcpiExec: Multiple ACPI tables are now loaded in the order that they 1329appear on the command line. This can be important when there are 1330interdependencies/references between the tables. 1331 1332iASL/Templates. Add support to generate template files with multiple 1333SSDTs within a single output file. Also added ommand line support to 1334specify the number of SSDTs (in addition to a single DSDT). ACPICA BZ 13351223, 1225. 1336 1337 1338---------------------------------------- 133924 November 2015. Summary of changes for version 20151124: 1340 13411) ACPICA kernel-resident subsystem: 1342 1343Fixed a possible regression for a previous update to FADT handling. The 1344FADT no longer has a fixed table ID, causing some issues with code that 1345was hardwired to a specific ID. Lv Zheng. 1346 1347Fixed a problem where the method auto-serialization could interfere with 1348the current SyncLevel. This change makes the auto-serialization support 1349transparent to the SyncLevel support and management. 1350 1351Removed support for the _SUB predefined name in AcpiGetObjectInfo. This 1352interface is intended for early access to the namespace during the 1353initial namespace device discovery walk. The _SUB method has been seen to 1354access operation regions in some cases, causing errors because the 1355operation regions are not fully initialized. 1356 1357AML Debugger: Fixed some issues with the terminate/quit/exit commands 1358that can cause faults. Lv Zheng. 1359 1360AML Debugger: Add thread ID support so that single-step mode only applies 1361to the AML Debugger thread. This prevents runtime errors within some 1362kernels. Lv Zheng. 1363 1364Eliminated extraneous warnings from AcpiGetSleepTypeData. Since the _Sx 1365methods that are invoked by this interface are optional, removed warnings 1366emitted for the case where one or more of these methods do not exist. 1367ACPICA BZ 1208, original change by Prarit Bhargava. 1368 1369Made a major pass through the entire ACPICA source code base to 1370standardize formatting that has diverged a bit over time. There are no 1371functional changes, but this will of course cause quite a few code 1372differences from the previous ACPICA release. 1373 1374Example Code and Data Size: These are the sizes for the OS-independent 1375acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1376debug version of the code includes the debug output trace mechanism and 1377has 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 13872) iASL Compiler/Disassembler and Tools: 1388 1389iASL/acpiexec/acpixtract/disassembler: Added support to allow multiple 1390definition blocks within a single ASL file and the resulting AML file. 1391Support for this type of file was also added to the various tools that 1392use binary AML files: acpiexec, acpixtract, and the AML disassembler. The 1393example code below shows two definition blocks within the same file: 1394 1395 DefinitionBlock ("dsdt.aml", "DSDT", 2, "Intel", "Template", 13960x12345678) 1397 { 1398 } 1399 DefinitionBlock ("", "SSDT", 2, "Intel", "Template", 0xABCDEF01) 1400 { 1401 } 1402 1403iASL: Enhanced typechecking for the Name() operator. All expressions for 1404the value of the named object must be reduced/folded to a single constant 1405at compile time, as per the ACPI specification (the AML definition of 1406Name()). 1407 1408iASL: Fixed some code indentation issues for the -ic and -ia options (C 1409and assembly headers). Now all emitted code correctly begins in column 1. 1410 1411iASL: Added an error message for an attempt to open a Scope() on an 1412object defined in an SSDT. The DSDT is always loaded into the namespace 1413first, so any attempt to open a Scope on an SSDT object will fail at 1414runtime. 1415 1416 1417---------------------------------------- 141830 September 2015. Summary of changes for version 20150930: 1419 14201) ACPICA kernel-resident subsystem: 1421 1422Debugger: Implemented several changes and bug fixes to assist support for 1423the 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 1428Interpreter: Updated runtime typechecking for all operators that have 1429target operands. The operand is resolved and validated that it is legal. 1430For example, the target cannot be a non-data object such as a Device, 1431Mutex, ThermalZone, etc., as per the ACPI specification. 1432 1433Debugger: Fixed the double-mutex user I/O handshake to work when local 1434deadlock detection is enabled. 1435 1436Debugger: limited display of method locals and arguments (LocalX and 1437ArgX) to only those that have actually been initialized. This prevents 1438lines of extraneous output. 1439 1440Updated the definition of the NFIT table to correct the bit polarity of 1441one flag: ACPI_NFIT_MEM_ARMED --> ACPI_NFIT_MEM_NOT_ARMED 1442 1443Example Code and Data Size: These are the sizes for the OS-independent 1444acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1445debug version of the code includes the debug output trace mechanism and 1446has 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 14562) iASL Compiler/Disassembler and Tools: 1457 1458iASL: Improved the compile-time typechecking for operands of many of the 1459ASL operators: 1460 1461-- Added an option to disable compiler operand/operator typechecking (- 1462ot). 1463 1464-- For the following operators, the TermArg operands are now validated 1465when possible to be Integer data objects: BankField, OperationRegion, 1466DataTableRegion, Buffer, and Package. 1467 1468-- Store (Source, Target): Both the source and target operands are 1469resolved and checked that the operands are both legal. For example, 1470neither operand can be a non-data object such as a Device, Mutex, 1471ThermalZone, etc. Note, as per the ACPI specification, the CopyObject 1472operator 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 1475must be a Package object, LocalX, ArgX, or Debug. Likewise, if the target 1476is a Package, the source must also be a Package. 1477 1478-- Store (Source, Target): A warning is issued if the source and target 1479resolve to the identical named object. 1480 1481-- Store (Source, <method invocation>): An error is generated for the 1482target method invocation, as this construct is not supported by the AML 1483interpreter. 1484 1485-- For all ASL math and logic operators, the target operand must be a 1486data object (Integer, String, Buffer, LocalX, ArgX, or Debug). This 1487includes the function return value also. 1488 1489-- External declarations are also included in the typechecking where 1490possible. External objects defined using the UnknownObj keyword cannot be 1491typechecked, however. 1492 1493iASL and Disassembler: Added symbolic (ASL+) support for the ASL Index 1494operator: 1495- Legacy code: Index(PKG1, 3) 1496- New ASL+ code: PKG1[3] 1497This completes the ACPI 6.0 ASL+ support as it was the only operator not 1498supported. 1499 1500iASL: Fixed the file suffix for the preprocessor output file (.i). Two 1501spaces were inadvertently appended to the filename, causing file access 1502and deletion problems on some systems. 1503 1504ASL Test Suite (ASLTS): Updated the master makefile to generate all 1505possible compiler output files when building the test suite -- thus 1506exercising these features of the compiler. These files are automatically 1507deleted when the test suite exits. 1508 1509 1510---------------------------------------- 151118 August 2015. Summary of changes for version 20150818: 1512 15131) ACPICA kernel-resident subsystem: 1514 1515Fix a regression for AcpiGetTableByIndex interface causing it to fail. Lv 1516Zheng. ACPICA BZ 1186. 1517 1518Completed development to ensure that the ACPICA Disassembler and Debugger 1519are fully standalone components of ACPICA. Removed cross-component 1520dependences. Lv Zheng. 1521 1522The max-number-of-AML-loops is now runtime configurable (previously was 1523compile-time only). This is essentially a loop timeout to force-abort 1524infinite AML loops. ACPCIA BZ 1192. 1525 1526Debugger: Cleanup output to dump ACPI names and namepaths without any 1527trailing underscores. Lv Zheng. ACPICA BZ 1135. 1528 1529Removed unnecessary conditional compilations across the Debugger and 1530Disassembler components where entire modules could be left uncompiled. 1531 1532The aapits test is deprecated and has been removed from the ACPICA git 1533tree. The test has never been completed and has not been maintained, thus 1534becoming rather useless. ACPICA BZ 1015, 794. 1535 1536A 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 1541Moore. 1542- ACPI table support: fix for a buffer read overrun in AcpiTbFindTable. 1543ACPICA BZ 1184. 1544- Enhance parameter validation for DataTableRegion and LoadTable ASL/AML 1545operators. 1546- Debugger: Split debugger initialization/termination interfaces. Lv 1547Zheng. 1548- AcpiExec: Emit OemTableId for SSDTs during the load phase for table 1549identification. 1550- AcpiExec: Add debug message during _REG method phase during table 1551load/init. 1552- AcpiNames: Fix a regression where some output was missing and no longer 1553emitted. 1554- Debugger: General cleanup and simplification. Lv Zheng. 1555- Disassembler: Cleanup use of several global option variables. Lv Zheng. 1556 1557Example Code and Data Size: These are the sizes for the OS-independent 1558acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1559debug version of the code includes the debug output trace mechanism and 1560has 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 15702) iASL Compiler/Disassembler and Tools: 1571 1572AcpiExec: Fixed a problem where any more than 32 ACPI tables in the XSDT 1573were not handled properly and caused load errors. Now, properly invoke 1574and use the ACPICA auto-reallocate mechanism for ACPI table data 1575structures. ACPICA BZ 1188 1576 1577AcpiNames: Add command-line wildcard support for ACPI table files. ACPICA 1578BZ 1190. 1579 1580AcpiExec and AcpiNames: Add -l option to load ACPI tables only. For 1581AcpiExec, this means that no control methods (like _REG/_INI/_STA) are 1582executed during initialization. ACPICA BZ 1187, 1189. 1583 1584iASL/Disassembler: Implemented a prototype "listing" mode that emits AML 1585that corresponds to each disassembled ASL statement, to simplify 1586debugging. ACPICA BZ 1191. 1587 1588Debugger: Add option to the "objects" command to display a summary of the 1589current namespace objects (Object type and count). This is displayed if 1590the command is entered with no arguments. 1591 1592AcpiNames: Add -x option to specify debug level, similar to AcpiExec. 1593 1594 1595---------------------------------------- 159617 July 2015. Summary of changes for version 20150717: 1597 15981) ACPICA kernel-resident subsystem: 1599 1600Improved the partitioning between the Debugger and Disassembler 1601components. This allows the Debugger to be used standalone within kernel 1602code without the Disassembler (which is used for single stepping also). 1603This renames and moves one file, dmobject.c to dbobject.c. Lv Zheng. 1604 1605Debugger: Implemented a new command to trace the execution of control 1606methods (Trace). This is especially useful for the in-kernel version of 1607the debugger when file I/O may not be available for method trace output. 1608See the ACPICA reference for more information. Lv Zheng. 1609 1610Moved all C library prototypes (used for the local versions of these 1611functions when requested) to a new header, acclib.h 1612Cleaned up the use of non-ANSI C library functions. These functions are 1613implemented locally in ACPICA. Moved all such functions to a common 1614source file, utnonansi.c 1615 1616Debugger: Fixed a problem with the "!!" command (get last command 1617executed) where the debugger could enter an infinite loop and eventually 1618crash. 1619 1620Removed the use of local macros that were used for some of the standard C 1621library functions to automatically cast input parameters. This mostly 1622affected the is* functions where the input parameter is defined to be an 1623int. This required a few modifications to the main ACPICA source code to 1624provide casting for these functions and eliminate possible compiler 1625warnings for these parameters. 1626 1627Across the source code, added additional status/error checking to resolve 1628issues discovered by static source code analysis tools such as Coverity. 1629 1630Example Code and Data Size: These are the sizes for the OS-independent 1631acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1632debug version of the code includes the debug output trace mechanism and 1633has 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 16432) iASL Compiler/Disassembler and Tools: 1644 1645iASL: Fixed a regression where the device map file feature no longer 1646worked properly when used in conjunction with the disassembler. It only 1647worked properly with the compiler itself. 1648 1649iASL: Implemented a new warning for method LocalX variables that are set 1650but never used (similar to a C compiler such as gcc). This also applies 1651to ArgX variables that are not defined by the parent method, and are 1652instead (legally) used as local variables. 1653 1654iASL/Preprocessor: Finished the pass-through of line numbers from the 1655preprocessor to the compiler. This ensures that compiler errors/warnings 1656have the correct original line numbers and filenames, regardless of any 1657#include files. 1658 1659iASL/Preprocessor: Fixed a couple of issues with comment handling and the 1660pass-through of comments to the preprocessor output file (which becomes 1661the compiler input file). Also fixed a problem with // comments that 1662appear after a math expression. 1663 1664iASL: Added support for the TCPA server table to the table compiler and 1665template generator. (The client table was already previously supported) 1666 1667iASL/Preprocessor: Added a permanent #define of the symbol "__IASL__" to 1668identify the iASL compiler. 1669 1670Cleaned up the use of the macros NEGATIVE and POSITIVE which were defined 1671multiple times. The new names are ACPI_SIGN_NEGATIVE and 1672ACPI_SIGN_POSITIVE. 1673 1674AcpiHelp: Update to expand help messages for the iASL preprocessor 1675directives. 1676 1677 1678---------------------------------------- 167919 June 2015. Summary of changes for version 20150619: 1680 1681Two regressions in version 20150616 have been addressed: 1682 1683Fixes some problems/issues with the C library macro removal (ACPI_STRLEN, 1684etc.) This update changes ACPICA to only use the standard headers for 1685functions, or the prototypes for the local versions of the C library 1686functions. Across the source code, this required some additional casts 1687for some Clib invocations for portability. Moved all local prototypes to 1688a new file, acclib.h 1689 1690Fixes several problems with recent changes to the handling of the FACS 1691table that could cause some systems not to boot. 1692 1693 1694---------------------------------------- 169516 June 2015. Summary of changes for version 20150616: 1696 1697 16981) ACPICA kernel-resident subsystem: 1699 1700Across the entire ACPICA source code base, the various macros for the C 1701library functions (such as ACPI_STRLEN, etc.) have been removed and 1702replaced by the standard C library names (strlen, etc.) The original 1703purpose for these macros is no longer applicable. This simplification 1704reduces the number of macros used in the ACPICA source code 1705significantly, improving readability and maintainability. 1706 1707Implemented 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 1709enables the replacement of existing namespace objects that were installed 1710via the DSDT and/or SSDTs. The primary purpose for this is to replace 1711buggy or incorrect ASL/AML code obtained via the BIOS. The OSDT is slated 1712for inclusion in a future version of the ACPI Specification. Lv Zheng/Bob 1713Moore. 1714 1715Added support for systems with (improperly) two FACS tables -- a "32-bit" 1716table (via FADT 32-bit legacy field) and a "64-bit" table (via the 64-bit 1717X field). This change will support both automatically. There continues to 1718be systems found with this issue. This support requires a change to the 1719AcpiSetFirmwareWakingVector interface. Also, a public global variable has 1720been added to allow the host to select which FACS is desired 1721(AcpiGbl_Use32BitFacsAddresses). See the ACPICA reference for more 1722details Lv Zheng. 1723 1724Added a new feature to allow for systems that do not contain an FACS. 1725Although this is already supported on hardware-reduced platforms, the 1726feature has been extended for all platforms. The reasoning is that we do 1727not want to abort the entire ACPICA initialization just because the 1728system is seriously buggy and has no FACS. 1729 1730Fixed a problem where the GUID strings for NFIT tables (in acuuid.h) were 1731not correctly transcribed from the ACPI specification in ACPICA version 173220150515. 1733 1734Implemented support for the _CLS object in the AcpiGetObjectInfo external 1735interface. 1736 1737Updated the definitions of the TCPA and TPM2 ACPI tables to the more 1738recent TCG ACPI Specification, December 14, 2014. Table disassembler and 1739compiler also updated. Note: The TCPA "server" table is not supported by 1740the disassembler/table-compiler at this time. 1741 1742ACPI 6.0: Added definitions for the new GIC version field in the MADT. 1743 1744Example Code and Data Size: These are the sizes for the OS-independent 1745acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1746debug version of the code includes the debug output trace mechanism and 1747has 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 17572) iASL Compiler/Disassembler and Tools: 1758 1759Disassembler: Fixed a problem with the new symbolic operator disassembler 1760where incorrect ASL code could be emitted in some cases for the "non- 1761commutative" operators -- Subtract, Divide, Modulo, ShiftLeft, and 1762ShiftRight. The actual problem cases seem to be rather unusual in common 1763ASL code, however. David Box. 1764 1765Modified the linux version of acpidump to obtain ACPI tables from not 1766just /dev/mem (which may not exist) and /sys/firmware/acpi/tables. Lv 1767Zheng. 1768 1769iASL: Fixed a problem where the user preprocessor output file (.i) 1770contained extra data that was not expected. The compiler was using this 1771file as a temporary file and passed through #line directives in order to 1772keep compiler error messages in sync with the input file and line number 1773across multiple include files. The (.i) is no longer a temporary file as 1774the compiler uses a new, different file for the original purpose. 1775 1776iASL: Fixed a problem where comments within the original ASL source code 1777file were not passed through to the preprocessor output file, nor any 1778listing files. 1779 1780iASL: Fixed some issues for the handling of the "#include" preprocessor 1781directive and the similar (but not the same) "Include" ASL operator. 1782 1783iASL: Add support for the new OSDT in both the disassembler and compiler. 1784 1785iASL: Fixed a problem with the constant folding support where a Buffer 1786object could be incorrectly generated (incorrectly formed) during a 1787conversion to a Store() operator. 1788 1789AcpiHelp: Updated for new NFIT GUIDs, "External" AML opcode, and new 1790description text for the _REV predefined name. _REV now permanently 1791returns 2, as per the ACPI 6.0 specification. 1792 1793Debugger: Enhanced the output of the Debug ASL object for references 1794produced by the Index operator. For Buffers and strings, only output the 1795actual byte pointed to by the index. For packages, only print the single 1796package element decoded by the index. Previously, the entire 1797buffer/string/package was emitted. 1798 1799iASL/Table-compiler: Fixed a regression where the "generic" data types 1800were no longer recognized, causing errors. 1801 1802 1803---------------------------------------- 180415 May 2015. Summary of changes for version 20150515: 1805 1806This release implements most of ACPI 6.0 as described below. 1807 18081) ACPICA kernel-resident subsystem: 1809 1810Implemented runtime argument checking and return value checking for all 1811new ACPI 6.0 predefined names. This includes: _BTH, _CR3, _DSD, _LPI, 1812_MTL, _PRR, _RDI, _RST, _TFP, _TSN. 1813 1814Example Code and Data Size: These are the sizes for the OS-independent 1815acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1816debug version of the code includes the debug output trace mechanism and 1817has 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 18272) iASL Compiler/Disassembler and Tools: 1828 1829iASL compiler: Added compile-time support for all new ACPI 6.0 predefined 1830names (argument count validation and return value typechecking.) 1831 1832iASL disassembler and table compiler: implemented support for all new 1833ACPI 6.0 tables. This includes: DRTM, IORT, LPIT, NFIT, STAO, WPBT, XENV. 1834 1835iASL disassembler and table compiler: Added ACPI 6.0 changes to existing 1836tables: FADT, MADT. 1837 1838iASL preprocessor: Added a new directive to enable inclusion of binary 1839blobs into ASL code. The new directive is #includebuffer. It takes a 1840binary file as input and emits a named ascii buffer object into the ASL 1841code. 1842 1843AcpiHelp: Added support for all new ACPI 6.0 predefined names. 1844 1845AcpiHelp: Added a new option, -d, to display all iASL preprocessor 1846directives. 1847 1848AcpiHelp: Added a new option, -t, to display all known/supported ACPI 1849tables. 1850 1851 1852---------------------------------------- 185310 April 2015. Summary of changes for version 20150410: 1854 1855Reverted a change introduced in version 20150408 that caused 1856a regression in the disassembler where incorrect operator 1857symbols could be emitted. 1858 1859 1860---------------------------------------- 186108 April 2015. Summary of changes for version 20150408: 1862 1863 18641) ACPICA kernel-resident subsystem: 1865 1866Permanently set the return value for the _REV predefined name. It now 1867returns 2 (was 5). This matches other ACPI implementations. _REV will be 1868deprecated in the future, and is now defined to be 1 for ACPI 1.0, and 2 1869for ACPI 2.0 and later. It should never be used to differentiate or 1870identify operating systems. 1871 1872Added the "Windows 2015" string to the _OSI support. ACPICA will now 1873return TRUE to a query with this string. 1874 1875Fixed several issues with the local version of the printf function. 1876 1877Added 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 18872) iASL Compiler/Disassembler and Tools: 1888 1889iASL: Implemented an enhancement to the constant folding feature to 1890transform 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 1894Updated support for the SLIC table (Software Licensing Description Table) 1895in both the Data Table compiler and the disassembler. The SLIC table 1896support now conforms to "Microsoft Software Licensing Tables (SLIC and 1897MSDM). November 29, 2011. Copyright 2011 Microsoft". Note: Any SLIC data 1898following the ACPI header is now defined to be "Proprietary Data", and as 1899such, can only be entered or displayed as a hex data block. 1900 1901Implemented full support for the MSDM table as described in the document 1902above. Note: The format of MSDM is similar to SLIC. Any MSDM data 1903following the ACPI header is defined to be "Proprietary Data", and can 1904only be entered or displayed as a hex data block. 1905 1906Implemented the -Pn option for the iASL Table Compiler (was only 1907implemented for the ASL compiler). This option disables the iASL 1908preprocessor. 1909 1910Disassembler: For disassembly of Data Tables, added a comment field 1911around the Ascii equivalent data that is emitted as part of the "Raw 1912Table Data" block. This prevents the iASL Preprocessor from possible 1913confusion if/when the table is compiled. 1914 1915Disassembler: Added an option (-df) to force the disassembler to assume 1916that the table being disassembled contains valid AML. This feature is 1917useful for disassembling AML files that contain ACPI signatures other 1918than DSDT or SSDT (such as OEMx or other signatures). 1919 1920Changes for the EFI version of the tools: 19211) Fixed a build error/issue 19222) Fixed a cast warning 1923 1924iASL: Fixed a path issue with the __FILE__ operator by making the 1925directory prefix optional within the internal SplitInputFilename 1926function. 1927 1928Debugger: Removed some unused global variables. 1929 1930Tests: Updated the makefile for proper generation of the AAPITS suite. 1931 1932 1933---------------------------------------- 193404 February 2015. Summary of changes for version 20150204: 1935 1936ACPICA kernel-resident subsystem: 1937 1938Updated all ACPICA copyrights and signons to 2014. Added the 2014 1939copyright to all module headers and signons, including the standard Linux 1940header. This affects virtually every file in the ACPICA core subsystem, 1941iASL compiler, all ACPICA utilities, and the test suites. 1942 1943Events: Introduce ACPI_GPE_DISPATCH_RAW_HANDLER to fix GPE storm issues. 1944A raw gpe handling mechanism was created to allow better handling of GPE 1945storms that aren't easily managed by the normal handler. The raw handler 1946allows disabling/renabling of the the GPE so that interrupt storms can be 1947avoided in cases where events cannot be timely serviced. In this 1948scenario, handlers should use the AcpiSetGpe() API to disable/enable the 1949GPE. This API will leave the reference counts undisturbed, thereby 1950preventing unintentional clearing of the GPE when the intent in only to 1951temporarily disable it. Raw handlers allow enabling and disabling of a 1952GPE by removing GPE register locking. As such, raw handlers much provide 1953their own locks while using GPE API's to protect access to GPE data 1954structures. 1955Lv Zheng 1956 1957Events: Always modify GPE registers under the GPE lock. 1958Applies GPE lock around AcpiFinishGpe() to protect access to GPE register 1959values. Reported as bug by joe.liu@apple.com. 1960 1961Unix makefiles: Separate option to disable optimizations and 1962_FORTIFY_SOURCE. This change removes the _FORTIFY_SOURCE flag from the 1963NOOPT disable option and creates a separate flag (NOFORTIFY) for this 1964purpose. Some toolchains may define _FORTIFY_SOURCE which leads redefined 1965errors when building ACPICA. This allows disabling the option without 1966also having to disable optimazations. 1967David 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-------------------------------------- 197507 November 2014. Summary of changes for version 20141107: 1976 1977This release is available at https://acpica.org/downloads 1978 1979This release introduces and implements language extensions to ASL that 1980provide support for symbolic ("C-style") operators and expressions. These 1981language extensions are known collectively as ASL+. 1982 1983 19841) iASL Compiler/Disassembler and Tools: 1985 1986Disassembler: Fixed a problem with disassembly of the UartSerialBus 1987macro. Changed "StopBitsNone" to the correct "StopBitsZero". David E. 1988Box. 1989 1990Disassembler: Fixed the Unicode macro support to add escape sequences. 1991All non-printable ASCII values are emitted as escape sequences, as well 1992as the standard escapes for quote and backslash. Ensures that the 1993disassembled macro can be correctly recompiled. 1994 1995iASL: Added Printf/Fprintf macros for formatted output. These macros are 1996translated to existing AML Concatenate and Store operations. Printf 1997writes to the ASL Debug object. Fprintf allows the specification of an 1998ASL name as the target. Only a single format specifier is required, %o, 1999since the AML interpreter dynamically converts objects to the required 2000type. 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 2015iASL: Added debug options (-bp, -bt) to dynamically prune levels of the 2016ASL parse tree before the AML code is generated. This allows blocks of 2017ASL code to be removed in order to help locate and identify problem 2018devices and/or code. David E. Box. 2019 2020AcpiExec: Added support (-fi) for an optional namespace object 2021initialization file. This file specifies initial values for namespace 2022objects as necessary for debugging and testing different ASL code paths 2023that may be taken as a result of BIOS options. 2024 2025 20262) Overview of symbolic operator support for ASL (ASL+) 2027------------------------------------------------------- 2028 2029As an extension to the ASL language, iASL implements support for symbolic 2030(C-style) operators for math and logical expressions. This can greatly 2031simplify ASL code as well as improve both readability and 2032maintainability. These language extensions can exist concurrently with 2033all legacy ASL code and expressions. 2034 2035The symbolic extensions are 100% compatible with existing AML 2036interpreters, since no new AML opcodes are created. To implement the 2037extensions, the iASL compiler transforms the symbolic expressions into 2038the legacy ASL/AML equivalents at compile time. 2039 2040Full symbolic expressions are supported, along with the standard C 2041precedence and associativity rules. 2042 2043Full disassembler support for the symbolic expressions is provided, and 2044creates an automatic migration path for existing ASL code to ASL+ code 2045via the disassembly process. By default, the disassembler now emits ASL+ 2046code with symbolic expressions. An option (-dl) is provided to force the 2047disassembler to emit legacy ASL code if desired. 2048 2049Below is the complete list of the currently supported symbolic operators 2050with examples. See the iASL User Guide for additional information. 2051 2052 2053ASL+ Syntax Legacy ASL Equivalent 2054----------- --------------------- 2055 2056 // Math operators 2057 2058Z = X + Y Add (X, Y, Z) 2059Z = X - Y Subtract (X, Y, Z) 2060Z = X * Y Multiply (X, Y, Z) 2061Z = X / Y Divide (X, Y, , Z) 2062Z = X % Y Mod (X, Y, Z) 2063Z = X << Y ShiftLeft (X, Y, Z) 2064Z = X >> Y ShiftRight (X, Y, Z) 2065Z = X & Y And (X, Y, Z) 2066Z = X | Y Or (X, Y, Z) 2067Z = X ^ Y Xor (X, Y, Z) 2068Z = ~X Not (X, Z) 2069X++ Increment (X) 2070X-- 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 2086X = Y Store (Y, X) 2087X += Y Add (X, Y, X) 2088X -= Y Subtract (X, Y, X) 2089X *= Y Multiply (X, Y, X) 2090X /= Y Divide (X, Y, , X) 2091X %= Y Mod (X, Y, X) 2092X <<= Y ShiftLeft (X, Y, X) 2093X >>= Y ShiftRight (X, Y, X) 2094X &= Y And (X, Y, X) 2095X |= Y Or (X, Y, X) 2096X ^= Y Xor (X, Y, X) 2097 2098 20993) ASL+ Examples: 2100----------------- 2101 2102Legacy ASL: 2103 If (LOr (LOr (LEqual (And (R510, 0x03FB), 0x02E0), LEqual ( 2104 And (R520, 0x03FB), 0x02E0)), LOr (LEqual (And (R530, 21050x03FB), 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 2116ASL+ 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 2130Legacy 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 2141ASL+ 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---------------------------------------- 215426 September 2014. Summary of changes for version 20140926: 2155 21561) ACPICA kernel-resident subsystem: 2157 2158Updated the GPIO operation region handler interface (GeneralPurposeIo). 2159In order to support GPIO Connection objects with multiple pins, along 2160with the related Field objects, the following changes to the interface 2161have been made: The Address is now defined to be the offset in bits of 2162the field unit from the previous invocation of a Connection. It can be 2163viewed as a "Pin Number Index" into the connection resource descriptor. 2164The BitWidth is the exact bit width of the field. It is usually one bit, 2165but not always. See the ACPICA reference guide (section 8.8.6.2.1) for 2166additional information and examples. 2167 2168GPE support: During ACPICA/GPE initialization, ensure that all GPEs with 2169corresponding _Lxx/_Exx methods are disabled (they may have been enabled 2170by the firmware), so that they cannot fire until they are enabled via 2171AcpiUpdateAllGpes. Rafael J. Wysocki. 2172 2173Added a new return flag for the Event/GPE status interfaces -- 2174AcpiGetEventStatus and AcpiGetGpeStatus. The new 2175ACPI_EVENT_FLAGS_HAS_HANDLER flag is used to indicate that the event or 2176GPE currently has a handler associated with it, and can thus actually 2177affect the system. Lv Zheng. 2178 2179Example Code and Data Size: These are the sizes for the OS-independent 2180acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2181debug version of the code includes the debug output trace mechanism and 2182has 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 21912) iASL Compiler/Disassembler and Tools: 2192 2193iASL: Fixed a memory allocation/free regression introduced in 20140828 2194that could cause the compiler to crash. This was introduced inadvertently 2195during the effort to eliminate compiler memory leaks. ACPICA BZ 1111, 21961113. 2197 2198iASL: Removed two error messages that have been found to create false 2199positives, until they can be fixed and fully validated (ACPICA BZ 1112): 22001) Illegal forward reference within a method 22012) Illegal reference across two methods 2202 2203iASL: Implemented a new option (-lm) to create a hardware mapping file 2204that summarizes all GPIO, I2C, SPI, and UART connections. This option 2205works for both the compiler and disassembler. See the iASL compiler user 2206guide for additional information and examples (section 6.4.6). 2207 2208AcpiDump: Added support for the version 1 (ACPI 1.0) RSDP in addition to 2209version 2. This corrects the AE_BAD_HEADER exception seen on systems with 2210a version 1 RSDP. Lv Zheng ACPICA BZ 1097. 2211 2212AcpiExec: For Unix versions, don't attempt to put STDIN into raw mode 2213unless STDIN is actually a terminal. Assists with batch-mode processing. 2214ACPICA BZ 1114. 2215 2216Disassembler/AcpiHelp: Added another large group of recognized _HID 2217values. 2218 2219 2220---------------------------------------- 222128 August 2014. Summary of changes for version 20140828: 2222 22231) ACPICA kernel-resident subsystem: 2224 2225Fixed a problem related to the internal use of the Timer() operator where 2226a 64-bit divide could cause an attempted link to a double-precision math 2227library. This divide is not actually necessary, so the code was 2228restructured to eliminate it. Lv Zheng. 2229 2230ACPI 5.1: Added support for the runtime validation of the _DSD package 2231(similar to the iASL support). 2232 2233ACPI 5.1/Headers: Added support for the GICC affinity subtable to the 2234SRAT table. Hanjun Guo <hanjun.guo@linaro.org>. 2235 2236Example Code and Data Size: These are the sizes for the OS-independent 2237acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2238debug version of the code includes the debug output trace mechanism and 2239has 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 22482) iASL Compiler/Disassembler and Tools: 2249 2250AcpiExec: Fixed a problem on unix systems where the original terminal 2251state was not always properly restored upon exit. Seen when using the -v 2252option. ACPICA BZ 1104. 2253 2254iASL: Fixed a problem with the validation of the ranges/length within the 2255Memory24 resource descriptor. There was a boundary condition when the 2256range was equal to the (length -1) caused by the fact that these values 2257are defined in 256-byte blocks, not bytes. ACPICA BZ 1098 2258 2259Disassembler: Fixed a problem with the GpioInt descriptor interrupt 2260polarity 2261flags. The flags are actually 2 bits, not 1, and the "ActiveBoth" keyword 2262is 2263now supported properly. 2264 2265ACPI 5.1: Added the GICC affinity subtable to the SRAT table. Supported 2266in the disassembler, data table compiler, and table template generator. 2267 2268iASL: Added a requirement for Device() objects that one of either a _HID 2269or _ADR must exist within the scope of a Device, as per the ACPI 2270specification. Remove a similar requirement that was incorrectly in place 2271for the _DSD object. 2272 2273iASL: Added error detection for illegal named references within control 2274methods that would cause runtime failures. Now trapped as errors are: 1) 2275References to objects within a non-parent control method. 2) Forward 2276references (within a method) -- for control methods, AML interpreters use 2277a one-pass parse of control methods. ACPICA BZ 1008. 2278 2279iASL: Added error checking for dependencies related to the _PSx power 2280methods. ACPICA BZ 1029. 22811) For _PS0, one of these must exist within the same scope: _PS1, _PS2, 2282_PS3. 22832) For _PS1, _PS2, and PS3: A _PS0 object must exist within the same 2284scope. 2285 2286iASL and table compiler: Cleanup miscellaneous memory leaks by fully 2287deploying the existing object and string caches and adding new caches for 2288the table compiler. 2289 2290iASL: Split the huge parser source file into multiple subfiles to improve 2291manageability. Generation now requires the M4 macro preprocessor, which 2292is part of the Bison distribution on both unix and windows platforms. 2293 2294AcpiSrc: Fixed and removed all extraneous warnings generated during 2295entire ACPICA source code scan and/or conversion. 2296 2297 2298---------------------------------------- 2299 230024 July 2014. Summary of changes for version 20140724: 2301 2302The ACPI 5.1 specification has been released and is available at: 2303http://uefi.org/specs/access 2304 2305 23060) ACPI 5.1 support in ACPICA: 2307 2308ACPI 5.1 is fully supported in ACPICA as of this release. 2309 2310New predefined names. Support includes iASL and runtime ACPICA 2311validation. 2312 _CCA (Cache Coherency Attribute). 2313 _DSD (Device-Specific Data). David Box. 2314 2315Modifications to existing ACPI tables. Support includes headers, iASL 2316Data 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 2322Miscellaneous. 2323 New notification type for System Resource Affinity change events. 2324 2325 23261) ACPICA kernel-resident subsystem: 2327 2328Fixed a regression introduced in 20140627 where a fault can happen during 2329the deletion of Alias AML namespace objects. The problem affected both 2330the core ACPICA and the ACPICA tools including iASL and AcpiExec. 2331 2332Implemented a new GPE public interface, AcpiMarkGpeForWake. Provides a 2333simple mechanism to enable wake GPEs that have no associated handler or 2334control method. Rafael Wysocki. 2335 2336Updated the AcpiEnableGpe interface to disallow the enable if there is no 2337handler or control method associated with the particular GPE. This will 2338help avoid meaningless GPEs and even GPE floods. Rafael Wysocki. 2339 2340Updated GPE handling and dispatch by disabling the GPE before clearing 2341the status bit for edge-triggered GPEs. Lv Zheng. 2342 2343Added Timer() support to the AML Debug object. The current timer value is 2344now displayed with each invocation of (Store to) the debug object to 2345enable simple generation of execution times for AML code (method 2346execution for example.) ACPICA BZ 1093. 2347 2348Example Code and Data Size: These are the sizes for the OS-independent 2349acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2350debug version of the code includes the debug output trace mechanism and 2351has 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 23612) iASL Compiler/Disassembler and Tools: 2362 2363Fixed an issue with the recently added local printf implementation, 2364concerning width/precision specifiers that could cause incorrect output. 2365Lv Zheng. ACPICA BZ 1094. 2366 2367Disassembler: Added support to detect buffers that contain UUIDs and 2368disassemble them to an invocation of the ToUUID operator. Also emit 2369commented descriptions of known ACPI-related UUIDs. 2370 2371AcpiHelp: Added support to display known ACPI-related UUIDs. New option, 2372-u. Adds three new files. 2373 2374iASL: Update table compiler and disassembler for DMAR table changes that 2375were introduced in September 2013. With assistance by David Woodhouse. 2376 2377---------------------------------------- 237827 June 2014. Summary of changes for version 20140627: 2379 23801) ACPICA kernel-resident subsystem: 2381 2382Formatted Output: Implemented local versions of standard formatted output 2383utilities such as printf, etc. Over time, it has been discovered that 2384there are in fact many portability issues with printf, and the addition 2385of this feature will fix/prevent these issues once and for all. Some 2386known issues are summarized below: 2387 23881) Output of 64-bit values is not portable. For example, UINT64 is %ull 2389for the Linux kernel and is %uI64 for some MSVC versions. 23902) Invoking printf consistently in a manner that is portable across both 239132-bit and 64-bit platforms is difficult at best in many situations. 23923) The output format for pointers varies from system to system (leading 2393zeros especially), and leads to inconsistent output from ACPICA across 2394platforms. 23954) Certain platform-specific printf formats may conflict with ACPICA use. 23965) If there is no local C library available, ACPICA now has local support 2397for printf. 2398 2399-- To address these printf issues in a complete manner, ACPICA now 2400directly implements a small subset of printf format specifiers, only 2401those that it requires. Adds a new file, utilities/utprint.c. Lv Zheng. 2402 2403Implemented support for ACPICA generation within the EFI environment. 2404Initially, the AcpiDump utility is supported in the UEFI shell 2405environment. Lv Zheng. 2406 2407Added a new external interface, AcpiLogError, to improve ACPICA 2408portability. This allows the host to redirect error messages from the 2409ACPICA utilities. Lv Zheng. 2410 2411Added and deployed new OSL file I/O interfaces to improve ACPICA 2412portability: 2413 AcpiOsOpenFile 2414 AcpiOsCloseFile 2415 AcpiOsReadFile 2416 AcpiOsWriteFile 2417 AcpiOsGetFileOffset 2418 AcpiOsSetFileOffset 2419There are C library implementations of these functions in the new file 2420service_layers/oslibcfs.c -- however, the functions can be implemented by 2421the local host in any way necessary. Lv Zheng. 2422 2423Implemented a mechanism to disable/enable ACPI table checksum validation 2424at runtime. This can be useful when loading tables very early during OS 2425initialization when it may not be possible to map the entire table in 2426order to compute the checksum. Lv Zheng. 2427 2428Fixed a buffer allocation issue for the Generic Serial Bus support. 2429Originally, a fixed buffer length was used. This change allows for 2430variable-length buffers based upon the protocol indicated by the field 2431access attributes. Reported by Lan Tianyu. Lv Zheng. 2432 2433Fixed a problem where an object detached from a namespace node was not 2434properly terminated/cleared and could cause a circular list problem if 2435reattached. ACPICA BZ 1063. David Box. 2436 2437Fixed a possible recursive lock acquisition in hwregs.c. Rakib Mullick. 2438 2439Fixed a possible memory leak in an error return path within the function 2440AcpiUtCopyIobjectToIobject. ACPICA BZ 1087. Colin Ian King. 2441 2442Example Code and Data Size: These are the sizes for the OS-independent 2443acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2444debug version of the code includes the debug output trace mechanism and 2445has 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 24552) iASL Compiler/Disassembler and Tools: 2456 2457Disassembler: Add dump of ASCII equivalent text within a comment at the 2458end of each line of the output for the Buffer() ASL operator. 2459 2460AcpiDump: 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 2463the ACPI 2.0 GUID fails. 2464 2465iASL: Fixed a problem where the compiler could fault if incorrectly given 2466an acpidump output file as input. ACPICA BZ 1088. David Box. 2467 2468AcpiExec/AcpiNames: Fixed a problem where these utilities could fault if 2469they are invoked without any arguments. 2470 2471Debugger: Fixed a possible memory leak in an error return path. ACPICA BZ 24721086. Colin Ian King. 2473 2474Disassembler: Cleaned up a block of code that extracts a parent Op 2475object. Added a comment that explains that the parent is guaranteed to be 2476valid in this case. ACPICA BZ 1069. 2477 2478 2479---------------------------------------- 248024 April 2014. Summary of changes for version 20140424: 2481 24821) ACPICA kernel-resident subsystem: 2483 2484Implemented support to skip/ignore NULL address entries in the RSDT/XSDT. 2485Some of these tables are known to contain a trailing NULL entry. Lv 2486Zheng. 2487 2488Removed an extraneous error message for the case where there are a large 2489number of system GPEs (> 124). This was the "32-bit FADT register is too 2490long to convert to GAS struct" message, which is irrelevant for GPEs 2491since 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 2493support for GPE numbers > 255, where some "GPE number" fields were 8-bits 2494internally. 2495 2496Implemented and deployed additional configuration support for the public 2497ACPICA external interfaces. Entire classes of interfaces can now be 2498easily modified or configured out, replaced by stubbed inline functions 2499by default. Lv Zheng. 2500 2501Moved all public ACPICA runtime configuration globals to the public 2502ACPICA external interface file for convenience. Also, removed some 2503obsolete/unused globals. See the file acpixf.h. Lv Zheng. 2504 2505Documentation: Added a new section to the ACPICA reference describing the 2506maximum number of GPEs that can be supported by the FADT-defined GPEs in 2507block zero and one. About 1200 total. See section 4.4.1 of the ACPICA 2508reference. 2509 2510Example Code and Data Size: These are the sizes for the OS-independent 2511acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2512debug version of the code includes the debug output trace mechanism and 2513has 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 25232) iASL Compiler/Disassembler and Tools: 2524 2525iASL and disassembler: Add full support for the LPIT table (Low Power 2526Idle Table). Includes support in the disassembler, data table compiler, 2527and template generator. 2528 2529AcpiDump utility: 25301) Add option to force the use of the RSDT (over the XSDT). 25312) Improve validation of the RSDP signature (use 8 chars instead of 4). 2532 2533iASL: Add check for predefined packages that are too large. For 2534predefined names that contain subpackages, check if each subpackage is 2535too large. (Check for too small already exists.) 2536 2537Debugger: Updated the GPE command (which simulates a GPE by executing the 2538GPE code paths in ACPICA). The GPE device is now optional, and defaults 2539to the GPE 0/1 FADT-defined blocks. 2540 2541Unix application OSL: Update line-editing support. Add additional error 2542checking and take care not to reset terminal attributes on exit if they 2543were never set. This should help guarantee that the terminal is always 2544left in the previous state on program exit. 2545 2546 2547---------------------------------------- 254825 March 2014. Summary of changes for version 20140325: 2549 25501) ACPICA kernel-resident subsystem: 2551 2552Updated the auto-serialize feature for control methods. This feature 2553automatically serializes all methods that create named objects in order 2554to prevent runtime errors. The update adds support to ignore the 2555currently executing AML SyncLevel when invoking such a method, in order 2556to prevent disruption of any existing SyncLevel priorities that may exist 2557in the AML code. Although the use of SyncLevels is relatively rare, this 2558change fixes a regression where an AE_AML_MUTEX_ORDER exception can 2559appear on some machines starting with the 20140214 release. 2560 2561Added a new external interface to allow the host to install ACPI tables 2562very early, before the namespace is even created. AcpiInstallTable gives 2563the host additional flexibility for ACPI table management. Tables can be 2564installed directly by the host as if they had originally appeared in the 2565XSDT/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 2567with additional internal restructuring and cleanup. See the ACPICA 2568Reference for interface details. Lv Zheng. 2569 2570Added validation of the checksum for all incoming dynamically loaded 2571tables (via external interfaces or via AML Load/LoadTable operators). Lv 2572Zheng. 2573 2574Updated the use of the AcpiOsWaitEventsComplete interface during Notify 2575and GPE handler removal. Restructured calls to eliminate possible race 2576conditions. Lv Zheng. 2577 2578Added a warning for the use/execution of the ASL/AML Unload (table) 2579operator. This will help detect and identify machines that use this 2580operator if and when it is ever used. This operator has never been seen 2581in the field and the usage model and possible side-effects of the drastic 2582runtime action of a full table removal are unknown. 2583 2584Reverted the use of #pragma push/pop which was introduced in the 20140214 2585release. It appears that push and pop are not implemented by enough 2586compilers to make the use of this feature feasible for ACPICA at this 2587time. However, these operators may be deployed in a future ACPICA 2588release. 2589 2590Added the missing EXPORT_SYMBOL macros for the install and remove SCI 2591handler interfaces. 2592 2593Source code generation: 25941) Disabled the use of the "strchr" macro for the gcc-specific 2595generation. For some versions of gcc, this macro can periodically expose 2596a compiler bug which in turn causes compile-time error(s). 25972) Added support for PPC64 compilation. Colin Ian King. 2598 2599Example Code and Data Size: These are the sizes for the OS-independent 2600acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2601debug version of the code includes the debug output trace mechanism and 2602has 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 26122) iASL Compiler/Disassembler and Tools: 2613 2614Disassembler: Added several new features to improve the readability of 2615the resulting ASL code. Extra information is emitted within comment 2616fields in the ASL code: 26171) Known _HID/_CID values are decoded to descriptive text. 26182) Standard values for the Notify() operator are decoded to descriptive 2619text. 26203) Target operands are expanded to full pathnames (in a comment) when 2621possible. 2622 2623Disassembler: Miscellaneous updates for extern() handling: 26241) Abort compiler if file specified by -fe option does not exist. 26252) Silence unnecessary warnings about argument count mismatches. 26263) Update warning messages concerning unresolved method externals. 26274) Emit "UnknownObj" keyword for externals whose type cannot be 2628determined. 2629 2630AcpiHelp utility: 26311) Added the -a option to display both the ASL syntax and the AML 2632encoding for an input ASL operator. This effectively displays all known 2633information about an ASL operator with one AcpiHelp invocation. 26342) Added substring match support (similar to a wildcard) for the -i 2635(_HID/PNP IDs) option. 2636 2637iASL/Disassembler: Since this tool does not yet support execution on big- 2638endian machines, added detection of endianness and an error message if 2639execution is attempted on big-endian. Support for big-endian within iASL 2640is a feature that is on the ACPICA to-be-done list. 2641 2642AcpiBin utility: 26431) Remove option to extract binary files from an acpidump; this function 2644is made obsolete by the AcpiXtract utility. 26452) General cleanup of open files and allocated buffers. 2646 2647 2648---------------------------------------- 264914 February 2014. Summary of changes for version 20140214: 2650 26511) ACPICA kernel-resident subsystem: 2652 2653Implemented a new mechanism to proactively prevent problems with ill- 2654behaved reentrant control methods that create named ACPI objects. This 2655behavior is illegal as per the ACPI specification, but is nonetheless 2656frequently seen in the field. Previously, this could lead to an 2657AE_ALREADY_EXISTS exception if the method was actually entered by more 2658than one thread. This new mechanism detects such methods at table load 2659time and marks them "serialized" to prevent reentrancy. A new global 2660option, AcpiGbl_AutoSerializeMethods, has been added to disable this 2661feature if desired. This mechanism and global option obsoletes and 2662supersedes the previous AcpiGbl_SerializeAllMethods option. 2663 2664Added the "Windows 2013" string to the _OSI support. ACPICA will now 2665respond TRUE to _OSI queries with this string. It is the stated policy of 2666ACPICA to add new strings to the _OSI support as soon as possible after 2667they are defined. See the full ACPICA _OSI policy which has been added to 2668the utilities/utosi.c file. 2669 2670Hardened/updated the _PRT return value auto-repair code: 26711) Do not abort the repair on a single subpackage failure, continue to 2672check all subpackages. 26732) Add check for the minimum subpackage length (4). 26743) Properly handle extraneous NULL package elements. 2675 2676Added support to avoid the possibility of infinite loops when traversing 2677object linked lists. Never allow an infinite loop, even in the face of 2678corrupted object lists. 2679 2680ACPICA headers: Deployed the use of #pragma pack(push) and #pragma 2681pack(pop) directives to ensure that the ACPICA headers are independent of 2682compiler settings or other host headers. 2683 2684Example Code and Data Size: These are the sizes for the OS-independent 2685acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2686debug version of the code includes the debug output trace mechanism and 2687has 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 26972) iASL Compiler/Disassembler and Tools: 2698 2699iASL/Table-compiler: Fixed a problem with support for the SPMI table. The 2700first reserved field was incorrectly forced to have a value of zero. This 2701change correctly forces the field to have a value of one. ACPICA BZ 1081. 2702 2703Debugger: Added missing support for the "Extra" and "Data" subobjects 2704when displaying object data. 2705 2706Debugger: Added support to display entire object linked lists when 2707displaying object data. 2708 2709iASL: Removed the obsolete -g option to obtain ACPI tables from the 2710Windows registry. This feature has been superseded by the acpidump 2711utility. 2712 2713 2714---------------------------------------- 271514 January 2014. Summary of changes for version 20140114: 2716 27171) ACPICA kernel-resident subsystem: 2718 2719Updated all ACPICA copyrights and signons to 2014. Added the 2014 2720copyright to all module headers and signons, including the standard Linux 2721header. This affects virtually every file in the ACPICA core subsystem, 2722iASL compiler, all ACPICA utilities, and the test suites. 2723 2724Improved parameter validation for AcpiInstallGpeBlock. Added the 2725following checks: 27261) The incoming device handle refers to type ACPI_TYPE_DEVICE. 27272) There is not already a GPE block attached to the device. 2728Likewise, with AcpiRemoveGpeBlock, ensure that the incoming object is a 2729device. 2730 2731Correctly support "references" in the ACPI_OBJECT. This change fixes the 2732support to allow references (namespace nodes) to be passed as arguments 2733to control methods via the evaluate object interface. This is probably 2734most useful for testing purposes, however. 2735 2736Improved support for 32/64 bit physical addresses in printf()-like 2737output. This change improves the support for physical addresses in printf 2738debug statements and other output on both 32-bit and 64-bit hosts. It 2739consistently outputs the appropriate number of bytes for each host. The 2740%p specifier is unsatisfactory since it does not emit uniform output on 2741all hosts/clib implementations (on some, leading zeros are not supported, 2742leading to difficult-to-read output). 2743 2744Example Code and Data Size: These are the sizes for the OS-independent 2745acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2746debug version of the code includes the debug output trace mechanism and 2747has 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 27572) iASL Compiler/Disassembler and Tools: 2758 2759iASL: Fix a possible fault when using the Connection() operator. Fixes a 2760problem if the parent Field definition for the Connection operator refers 2761to an operation region that does not exist. ACPICA BZ 1064. 2762 2763AcpiExec: Load of local test tables is now optional. The utility has the 2764capability to load some various tables to test features of ACPICA. 2765However, there are enough of them that the output of the utility became 2766confusing. With this change, only the required local tables are displayed 2767(RSDP, XSDT, etc.) along with the actual tables loaded via the command 2768line specification. This makes the default output simler and easier to 2769understand. The -el command line option restores the original behavior 2770for testing purposes. 2771 2772AcpiExec: Added support for overlapping operation regions. This change 2773expands the simulation of operation regions by supporting regions that 2774overlap within the given address space. Supports SystemMemory and 2775SystemIO. ASLTS test suite updated also. David Box. ACPICA BZ 1031. 2776 2777AcpiExec: Added region handler support for PCI_Config and EC spaces. This 2778allows AcpiExec to simulate these address spaces, similar to the current 2779support for SystemMemory and SystemIO. 2780 2781Debugger: Added new command to read/write/compare all namespace objects. 2782The command "test objects" will exercise the entire namespace by writing 2783new values to each data object, and ensuring that the write was 2784successful. The original value is then restored and verified. 2785 2786Debugger: Added the "test predefined" command. This change makes this 2787test public and puts it under the new "test" command. The test executes 2788each and every predefined name within the current namespace. 2789 2790 2791---------------------------------------- 279218 December 2013. Summary of changes for version 20131218: 2793 2794Global note: The ACPI 5.0A specification was released this month. There 2795are no changes needed for ACPICA since this release of ACPI is an 2796errata/clarification release. The specification is available at 2797acpi.info. 2798 2799 28001) ACPICA kernel-resident subsystem: 2801 2802Added validation of the XSDT root table if it is present. Some older 2803platforms contain an XSDT that is ill-formed or otherwise invalid (such 2804as containing some or all entries that are NULL pointers). This change 2805adds a new function to validate the XSDT before actually using it. If the 2806XSDT is found to be invalid, ACPICA will now automatically fall back to 2807using the RSDT instead. Original implementation by Zhao Yakui. Ported to 2808ACPICA and enhanced by Lv Zheng and Bob Moore. 2809 2810Added a runtime option to ignore the XSDT and force the use of the RSDT. 2811This change adds a runtime option that will force ACPICA to use the RSDT 2812instead of the XSDT (AcpiGbl_DoNotUseXsdt). Although the ACPI spec 2813requires that an XSDT be used instead of the RSDT, the XSDT has been 2814found to be corrupt or ill-formed on some machines. Lv Zheng. 2815 2816Added a runtime option to favor 32-bit FADT register addresses over the 281764-bit addresses. This change adds an option to favor 32-bit FADT 2818addresses when there is a conflict between the 32-bit and 64-bit versions 2819of the same register. The default behavior is to use the 64-bit version 2820in accordance with the ACPI specification. This can now be overridden via 2821the AcpiGbl_Use32BitFadtAddresses flag. ACPICA BZ 885. Lv Zheng. 2822 2823During the change above, the internal "Convert FADT" and "Verify FADT" 2824functions have been merged to simplify the code, making it easier to 2825understand and maintain. ACPICA BZ 933. 2826 2827Improve exception reporting and handling for GPE block installation. 2828Return an actual status from AcpiEvGetGpeXruptBlock and don't clobber the 2829status when exiting AcpiEvInstallGpeBlock. ACPICA BZ 1019. 2830 2831Added helper macros to extract bus/segment numbers from the HEST table. 2832This change adds two macros to extract the encoded bus and segment 2833numbers from the HEST Bus field - ACPI_HEST_BUS and ACPI_HEST_SEGMENT. 2834Betty Dall <betty.dall@hp.com> 2835 2836Removed the unused ACPI_FREE_BUFFER macro. This macro is no longer used 2837by ACPICA. It is not a public macro, so it should have no effect on 2838existing OSV code. Lv Zheng. 2839 2840Example Code and Data Size: These are the sizes for the OS-independent 2841acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2842debug version of the code includes the debug output trace mechanism and 2843has 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 28532) iASL Compiler/Disassembler and Tools: 2854 2855Disassembler: Improved pathname support for emitted External() 2856statements. This change adds full pathname support for external names 2857that have been resolved internally by the inclusion of additional ACPI 2858tables (via the iASL -e option). Without this change, the disassembler 2859can emit multiple externals for the same object, or it become confused 2860when the Scope() operator is used on an external object. Overall, greatly 2861improves the ability to actually recompile the emitted ASL code when 2862objects a referenced across multiple ACPI tables. Reported by Michael 2863Tsirkin (mst@redhat.com). 2864 2865Tests/ASLTS: Updated functional control suite to execute with no errors. 2866David Box. Fixed several errors related to the testing of the interpreter 2867slack mode. Lv Zheng. 2868 2869iASL: Added support to detect names that are declared within a control 2870method, but are unused (these are temporary names that are only valid 2871during the time the method is executing). A remark is issued for these 2872cases. ACPICA BZ 1022. 2873 2874iASL: Added full support for the DBG2 table. Adds full disassembler, 2875table compiler, and template generator support for the DBG2 table (Debug 2876Port 2 table). 2877 2878iASL: Added full support for the PCCT table, update the table definition. 2879Updates the PCCT table definition in the actbl3.h header and adds table 2880compiler and template generator support. 2881 2882iASL: Added an option to emit only error messages (no warnings/remarks). 2883The -ve option will enable only error messages, warnings and remarks are 2884suppressed. This can simplify debugging when only the errors are 2885important, such as when an ACPI table is disassembled and there are many 2886warnings and remarks -- but only the actual errors are of real interest. 2887 2888Example ACPICA code (source/tools/examples): Updated the example code so 2889that it builds to an actual working program, not just example code. Added 2890ACPI tables and execution of an example control method in the DSDT. Added 2891makefile support for Unix generation. 2892 2893 2894---------------------------------------- 289515 November 2013. Summary of changes for version 20131115: 2896 2897This release is available at https://acpica.org/downloads 2898 2899 29001) ACPICA kernel-resident subsystem: 2901 2902Resource Manager: Fixed loop termination for the "get AML length" 2903function. The loop previously had an error termination on a NULL resource 2904pointer, which can never happen since the loop simply increments a valid 2905resource pointer. This fix changes the loop to terminate with an error on 2906an invalid end-of-buffer condition. The problem can be seen as an 2907infinite loop by callers to AcpiSetCurrentResources with an invalid or 2908corrupted resource descriptor, or a resource descriptor that is missing 2909an END_TAG descriptor. Reported by Dan Carpenter 2910<dan.carpenter@oracle.com>. Lv Zheng, Bob Moore. 2911 2912Table unload and ACPICA termination: Delete all attached data objects 2913during namespace node deletion. This fix updates namespace node deletion 2914to delete the entire list of attached objects (attached via 2915AcpiAttachObject) instead of just one of the attached items. ACPICA BZ 29161024. Tomasz Nowicki (tomasz.nowicki@linaro.org). 2917 2918ACPICA termination: Added support to delete all objects attached to the 2919root namespace node. This fix deletes any and all objects that have been 2920attached to the root node via AcpiAttachData. Previously, none of these 2921objects were deleted. Reported by Tomasz Nowicki. ACPICA BZ 1026. 2922 2923Debug output: Do not emit the function nesting level for the in-kernel 2924build. The nesting level is really only useful during a single-thread 2925execution. Therefore, only enable this output for the AcpiExec utility. 2926Also, only emit the thread ID when executing under AcpiExec (Context 2927switches are still always detected and a message is emitted). ACPICA BZ 2928972. 2929 2930Example Code and Data Size: These are the sizes for the OS-independent 2931acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2932debug version of the code includes the debug output trace mechanism and 2933has 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 29432) iASL Compiler/Disassembler and Tools: 2944 2945AcpiExec/Unix-OSL: Use <termios.h> instead of <termio.h>. This is the 2946correct portable POSIX header for terminal control functions. 2947 2948Disassembler: Fixed control method invocation issues related to the use 2949of the CondRefOf() operator. The problem is seen in the disassembly where 2950control method invocations may not be disassembled properly if the 2951control method name has been used previously as an argument to CondRefOf. 2952The solution is to not attempt to emit an external declaration for the 2953CondRefOf target (it is not necessary in the first place). This prevents 2954disassembler object type confusion. ACPICA BZ 988. 2955 2956Unix Makefiles: Added an option to disable compiler optimizations and the 2957_FORTIFY_SOURCE flag. Some older compilers have problems compiling ACPICA 2958with optimizations (reportedly, gcc 4.4 for example). This change adds a 2959command line option for make (NOOPT) that disables all compiler 2960optimizations and the _FORTIFY_SOURCE compiler flag. The default 2961optimization is -O2 with the _FORTIFY_SOURCE flag specified. ACPICA BZ 29621034. Lv Zheng, Bob Moore. 2963 2964Tests/ASLTS: Added options to specify individual test cases and modes. 2965This allows testers running aslts.sh to optionally specify individual 2966test modes and test cases. Also added an option to disable the forced 2967generation of the ACPICA tools from source if desired. Lv Zheng. 2968 2969---------------------------------------- 297027 September 2013. Summary of changes for version 20130927: 2971 2972This release is available at https://acpica.org/downloads 2973 2974 29751) ACPICA kernel-resident subsystem: 2976 2977Fixed a problem with store operations to reference objects. This change 2978fixes a problem where a Store operation to an ArgX object that contained 2979a 2980reference to a field object did not complete the automatic dereference 2981and 2982then write to the actual field object. Instead, the object type of the 2983field object was inadvertently changed to match the type of the source 2984operand. The new behavior will actually write to the field object (buffer 2985field or field unit), thus matching the correct ACPI-defined behavior. 2986 2987Implemented support to allow the host to redefine individual OSL 2988prototypes. This change enables the host to redefine OSL prototypes found 2989in the acpiosxf.h file. This allows the host to implement OSL interfaces 2990with a macro or inlined function. Further, it allows the host to add any 2991additional required modifiers such as __iomem, __init, __exit, etc., as 2992necessary on a per-interface basis. Enables maximum flexibility for the 2993OSL interfaces. Lv Zheng. 2994 2995Hardcoded the access width for the FADT-defined reset register. The ACPI 2996specification requires the reset register width to be 8 bits. ACPICA now 2997hardcodes the width to 8 and ignores the FADT width value. This provides 2998compatibility with other ACPI implementations that have allowed BIOS code 2999with bad register width values to go unnoticed. Matthew Garett, Bob 3000Moore, 3001Lv Zheng. 3002 3003Changed the position/use of the ACPI_PRINTF_LIKE macro. This macro is 3004used 3005in the OSL header (acpiosxf). The change modifies the position of this 3006macro in each instance where it is used (AcpiDebugPrint, etc.) to avoid 3007build issues if the OSL defines the implementation of the interface to be 3008an inline stub function. Lv Zheng. 3009 3010Deployed a new macro ACPI_EXPORT_SYMBOL_INIT for the main ACPICA 3011initialization interfaces. This change adds a new macro for the main init 3012and terminate external interfaces in order to support hosts that require 3013additional or different processing for these functions. Changed from 3014ACPI_EXPORT_SYMBOL to ACPI_EXPORT_SYMBOL_INIT for these functions. Lv 3015Zheng, Bob Moore. 3016 3017Cleaned up the memory allocation macros for configurability. In the 3018common 3019case, the ACPI_ALLOCATE and related macros now resolve directly to their 3020respective AcpiOs* OSL interfaces. Two options: 30211) The ACPI_ALLOCATE_ZEROED macro uses a simple local implementation by 3022default, unless overridden by the USE_NATIVE_ALLOCATE_ZEROED define. 30232) For AcpiExec (and for debugging), the macros can optionally be 3024resolved 3025to the local ACPICA interfaces that track each allocation (local tracking 3026is used to immediately detect memory leaks). 3027Lv Zheng. 3028 3029Simplified the configuration for ACPI_REDUCED_HARDWARE. Allows the kernel 3030to predefine this macro to either TRUE or FALSE during the system build. 3031 3032Replaced __FUNCTION_ with __func__ in the gcc-specific header. 3033 3034Example Code and Data Size: These are the sizes for the OS-independent 3035acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3036debug version of the code includes the debug output trace mechanism and 3037has 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 30472) iASL Compiler/Disassembler and Tools: 3048 3049iASL: Implemented wildcard support for the -e option. This simplifies use 3050when there are many SSDTs that must be included to resolve external 3051method 3052declarations. ACPICA BZ 1041. Example: 3053 iasl -e ssdt*.dat -d dsdt.dat 3054 3055AcpiExec: Add history/line-editing for Unix/Linux systems. This change 3056adds a portable module that implements full history and limited line 3057editing for Unix and Linux systems. It does not use readline() due to 3058portability issues. Instead it uses the POSIX termio interface to put the 3059terminal in raw input mode so that the various special keys can be 3060trapped 3061(such as up/down-arrow for history support and left/right-arrow for line 3062editing). Uses the existing debugger history mechanism. ACPICA BZ 1036. 3063 3064AcpiXtract: Add support to handle (ignore) "empty" lines containing only 3065one or more spaces. This provides compatible with early or different 3066versions of the AcpiDump utility. ACPICA BZ 1044. 3067 3068AcpiDump: Do not ignore tables that contain only an ACPI table header. 3069Apparently, some BIOSs create SSDTs that contain an ACPI table header but 3070no other data. This change adds support to dump these tables. Any tables 3071shorter than the length of an ACPI table header remain in error (an error 3072message is emitted). Reported by Yi Li. 3073 3074Debugger: Echo actual command along with the "unknown command" message. 3075 3076---------------------------------------- 307723 August 2013. Summary of changes for version 20130823: 3078 30791) ACPICA kernel-resident subsystem: 3080 3081Implemented support for host-installed System Control Interrupt (SCI) 3082handlers. Certain ACPI functionality requires the host to handle raw 3083SCIs. For example, the "SCI Doorbell" that is defined for memory power 3084state support requires the host device driver to handle SCIs to examine 3085if the doorbell has been activated. Multiple SCI handlers can be 3086installed to allow for future expansion. New external interfaces are 3087AcpiInstallSciHandler, AcpiRemoveSciHandler; see the ACPICA reference for 3088details. Lv Zheng, Bob Moore. ACPICA BZ 1032. 3089 3090Operation region support: Never locally free the handler "context" 3091pointer. This change removes some dangerous code that attempts to free 3092the handler context pointer in some (rare) circumstances. The owner of 3093the handler owns this pointer and the ACPICA code should never touch it. 3094Although not seen to be an issue in any kernel, it did show up as a 3095problem (fault) under AcpiExec. Also, set the internal storage field for 3096the context pointer to zero when the region is deactivated, simply for 3097sanity. David Box. ACPICA BZ 1039. 3098 3099AcpiRead: On error, do not modify the return value target location. If an 3100error happens in the middle of a split 32/32 64-bit I/O operation, do not 3101modify the target of the return value pointer. Makes the code consistent 3102with the rest of ACPICA. Bjorn Helgaas. 3103 3104Example Code and Data Size: These are the sizes for the OS-independent 3105acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3106debug version of the code includes the debug output trace mechanism and 3107has 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 31172) iASL Compiler/Disassembler and Tools: 3118 3119AcpiDump: Implemented several new features and fixed some problems: 31201) Added support to dump the RSDP, RSDT, and XSDT tables. 31212) Added support for multiple table instances (SSDT, UEFI). 31223) Added option to dump "customized" (overridden) tables (-c). 31234) Fixed a problem where some table filenames were improperly 3124constructed. 31255) Improved some error messages, removed some unnecessary messages. 3126 3127iASL: Implemented additional support for disassembly of ACPI tables that 3128contain invocations of external control methods. The -fe<file> option 3129allows the import of a file that specifies the external methods along 3130with the required number of arguments for each -- allowing for the 3131correct disassembly of the table. This is a workaround for a limitation 3132of AML code where the disassembler often cannot determine the number of 3133arguments required for an external control method and generates incorrect 3134ASL code. See the iASL reference for details. ACPICA BZ 1030. 3135 3136Debugger: Implemented a new command (paths) that displays the full 3137pathnames (namepaths) and object types of all objects in the namespace. 3138This is an alternative to the namespace command. 3139 3140Debugger: Implemented a new command (sci) that invokes the SCI dispatch 3141mechanism and any installed handlers. 3142 3143iASL: Fixed a possible segfault for "too many parent prefixes" condition. 3144This can occur if there are too many parent prefixes in a namepath (for 3145example, ^^^^^^PCI0.ECRD). ACPICA BZ 1035. 3146 3147Application OSLs: Set the return value for the PCI read functions. These 3148functions simply return AE_OK, but should set the return value to zero 3149also. This change implements this. ACPICA BZ 1038. 3150 3151Debugger: Prevent possible command line buffer overflow. Increase the 3152size of a couple of the debugger line buffers, and ensure that overflow 3153cannot happen. ACPICA BZ 1037. 3154 3155iASL: Changed to abort immediately on serious errors during the parsing 3156phase. Due to the nature of ASL, there is no point in attempting to 3157compile these types of errors, and they typically end up causing a 3158cascade of hundreds of errors which obscure the original problem. 3159 3160---------------------------------------- 316125 July 2013. Summary of changes for version 20130725: 3162 31631) ACPICA kernel-resident subsystem: 3164 3165Fixed a problem with the DerefOf operator where references to FieldUnits 3166and BufferFields incorrectly returned the parent object, not the actual 3167value of the object. After this change, a dereference of a FieldUnit 3168reference results in a read operation on the field to get the value, and 3169likewise, the appropriate BufferField value is extracted from the target 3170buffer. 3171 3172Fixed a problem where the _WAK method could cause a fault under these 3173circumstances: 1) Interpreter slack mode was not enabled, and 2) the _WAK 3174method returned no value. The problem is rarely seen because most kernels 3175run ACPICA in slack mode. 3176 3177For the DerefOf operator, a fatal error now results if an attempt is made 3178to dereference a reference (created by the Index operator) to a NULL 3179package element. Provides compatibility with other ACPI implementations, 3180and this behavior will be added to a future version of the ACPI 3181specification. 3182 3183The ACPI Power Management Timer (defined in the FADT) is now optional. 3184This provides compatibility with other ACPI implementations and will 3185appear in the next version of the ACPI specification. If there is no PM 3186Timer on the platform, AcpiGetTimer returns AE_SUPPORT. An address of 3187zero in the FADT indicates no PM timer. 3188 3189Implemented a new interface for _OSI support, AcpiUpdateInterfaces. This 3190allows the host to globally enable/disable all vendor strings, all 3191feature strings, or both. Intended to be primarily used for debugging 3192purposes only. Lv Zheng. 3193 3194Expose the collected _OSI data to the host via a global variable. This 3195data tracks the highest level vendor ID that has been invoked by the BIOS 3196so that the host (and potentially ACPICA itself) can change behaviors 3197based upon the age of the BIOS. 3198 3199Example Code and Data Size: These are the sizes for the OS-independent 3200acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3201debug version of the code includes the debug output trace mechanism and 3202has 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 32122) iASL Compiler/Disassembler and Tools: 3213 3214iASL: Created the following enhancements for the -so option (create 3215offset table): 32161)Add offsets for the last nameseg in each namepath for every supported 3217object type 32182)Add support for Processor, Device, Thermal Zone, and Scope objects 32193)Add the actual AML opcode for the parent object of every supported 3220object type 32214)Add support for the ZERO/ONE/ONES AML opcodes for integer objects 3222 3223Disassembler: Emit all unresolved external symbols in a single block. 3224These are external references to control methods that could not be 3225resolved, and thus, the disassembler had to make a guess at the number of 3226arguments to parse. 3227 3228iASL: The argument to the -T option (create table template) is now 3229optional. If not specified, the default table is a DSDT, typically the 3230most common case. 3231 3232---------------------------------------- 323326 June 2013. Summary of changes for version 20130626: 3234 32351) ACPICA kernel-resident subsystem: 3236 3237Fixed an issue with runtime repair of the _CST object. Null or invalid 3238elements were not always removed properly. Lv Zheng. 3239 3240Removed an arbitrary restriction of 256 GPEs per GPE block (such as the 3241FADT-defined GPE0 and GPE1). For GPE0, GPE1, and each GPE Block Device, 3242the maximum number of GPEs is 1016. Use of multiple GPE block devices 3243makes the system-wide number of GPEs essentially unlimited. 3244 3245Example Code and Data Size: These are the sizes for the OS-independent 3246acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3247debug version of the code includes the debug output trace mechanism and 3248has 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 32582) iASL Compiler/Disassembler and Tools: 3259 3260Portable AcpiDump: Implemented full support for the Linux and FreeBSD 3261hosts. Now supports Linux, FreeBSD, and Windows. 3262 3263Disassembler: Added some missing types for the HEST and EINJ tables: "Set 3264Error Type With Address", "CMCI", "MCE", and "Flush Cacheline". 3265 3266iASL/Preprocessor: Implemented full support for nested 3267#if/#else/#elif/#endif blocks. Allows arbitrary depth of nested blocks. 3268 3269Disassembler: Expanded maximum output string length to 64K. Was 256 bytes 3270max. The original purpose of this constraint was to limit the amount of 3271debug output. However, the string function in question (UtPrintString) is 3272now used for the disassembler also, where 256 bytes is insufficient. 3273Reported by RehabMan@GitHub. 3274 3275iASL/DataTables: Fixed some problems and issues with compilation of DMAR 3276tables. ACPICA BZ 999. Lv Zheng. 3277 3278iASL: Fixed a couple of error exit issues that could result in a "Could 3279not delete <file>" message during ASL compilation. 3280 3281AcpiDump: Allow "FADT" and "MADT" as valid table signatures, even though 3282the actual signatures for these tables are "FACP" and "APIC", 3283respectively. 3284 3285AcpiDump: Added support for multiple UEFI tables. Only SSDT and UEFI 3286tables are allowed to have multiple instances. 3287 3288---------------------------------------- 328917 May 2013. Summary of changes for version 20130517: 3290 32911) ACPICA kernel-resident subsystem: 3292 3293Fixed a regression introduced in version 20130328 for _INI methods. This 3294change fixes a problem introduced in 20130328 where _INI methods are no 3295longer executed properly because of a memory block that was not 3296initialized correctly. ACPICA BZ 1016. Tomasz Nowicki 3297<tomasz.nowicki@linaro.org>. 3298 3299Fixed a possible problem with the new extended sleep registers in the 3300ACPI 33015.0 FADT. Do not use these registers (even if populated) unless the HW- 3302reduced bit is set in the FADT (as per the ACPI specification). ACPICA BZ 33031020. Lv Zheng. 3304 3305Implemented return value repair code for _CST predefined objects: Sort 3306the 3307list and detect/remove invalid entries. ACPICA BZ 890. Lv Zheng. 3308 3309Implemented a debug-only option to disable loading of SSDTs from the 3310RSDT/XSDT during ACPICA initialization. This can be useful for debugging 3311ACPI problems on some machines. Set AcpiGbl_DisableSsdtTableLoad in 3312acglobal.h - ACPICA BZ 1005. Lv Zheng. 3313 3314Fixed some issues in the ACPICA initialization and termination code: 3315Tomasz Nowicki <tomasz.nowicki@linaro.org> 33161) Clear events initialized flag upon event component termination. ACPICA 3317BZ 1013. 33182) Fixed a possible memory leak in GPE init error path. ACPICA BZ 1018. 33193) Delete global lock pending lock during termination. ACPICA BZ 1012. 33204) Clear debug buffer global on termination to prevent possible multiple 3321delete. ACPICA BZ 1010. 3322 3323Standardized all switch() blocks across the entire source base. After 3324many 3325years, different formatting for switch() had crept in. This change makes 3326the formatting of every switch block identical. ACPICA BZ 997. Chao Guan. 3327 3328Split some files to enhance ACPICA modularity and configurability: 33291) Split buffer dump routines into utilities/utbuffer.c 33302) Split internal error message routines into utilities/uterror.c 33313) Split table print utilities into tables/tbprint.c 33324) Split iASL command-line option processing into asloptions.c 3333 3334Makefile enhancements: 33351) Support for all new files above. 33362) Abort make on errors from any subcomponent. Chao Guan. 33373) Add build support for Apple Mac OS X. Liang Qi. 3338 3339Example Code and Data Size: These are the sizes for the OS-independent 3340acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3341debug version of the code includes the debug output trace mechanism and 3342has 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 33522) iASL Compiler/Disassembler and Tools: 3353 3354New utility: Implemented an easily portable version of the acpidump 3355utility to extract ACPI tables from the system (or a file) in an ASCII 3356hex 3357dump format. The top-level code implements the various command line 3358options, file I/O, and table dump routines. To port to a new host, only 3359three functions need to be implemented to get tables -- since this 3360functionality is OS-dependent. See the tools/acpidump/apmain.c module and 3361the ACPICA reference for porting instructions. ACPICA BZ 859. Notes: 33621) The Windows version obtains the ACPI tables from the Registry. 33632) The Linux version is under development. 33643) Other hosts - If an OS-dependent module is submitted, it will be 3365distributed with ACPICA. 3366 3367iASL: Fixed a regression for -D preprocessor option (define symbol). A 3368restructuring/change to the initialization sequence caused this option to 3369no longer work properly. 3370 3371iASL: Implemented a mechanism to disable specific warnings and remarks. 3372Adds a new command line option, "-vw <messageid> as well as "#pragma 3373disable <messageid>". ACPICA BZ 989. Chao Guan, Bob Moore. 3374 3375iASL: Fix for too-strict package object validation. The package object 3376validation for return values from the predefined names is a bit too 3377strict, it does not allow names references within the package (which will 3378be resolved at runtime.) These types of references cannot be validated at 3379compile time. This change ignores named references within package objects 3380for names that return or define static packages. 3381 3382Debugger: Fixed the 80-character command line limitation for the History 3383command. Now allows lines of arbitrary length. ACPICA BZ 1000. Chao Guan. 3384 3385iASL: Added control method and package support for the -so option 3386(generates AML offset table for BIOS support.) 3387 3388iASL: issue a remark if a non-serialized method creates named objects. If 3389a thread blocks within the method for any reason, and another thread 3390enters the method, the method will fail because an attempt will be made 3391to 3392create the same (named) object twice. In this case, issue a remark that 3393the method should be marked serialized. NOTE: may become a warning later. 3394ACPICA BZ 909. 3395 3396---------------------------------------- 339718 April 2013. Summary of changes for version 20130418: 3398 33991) ACPICA kernel-resident subsystem: 3400 3401Fixed a possible buffer overrun during some rare but specific field unit 3402read operations. This overrun can only happen if the DSDT version is 1 -- 3403meaning that all AML integers are 32 bits -- and the field length is 3404between 33 and 55 bits long. During the read, an internal buffer object 3405is 3406created for the field unit because the field is larger than an integer 3407(32 3408bits). However, in this case, the buffer will be incorrectly written 3409beyond the end because the buffer length is less than the internal 3410minimum 3411of 64 bits (8 bytes) long. The buffer will be either 5, 6, or 7 bytes 3412long, but a full 8 bytes will be written. 3413 3414Updated the Embedded Controller "orphan" _REG method support. This refers 3415to _REG methods under the EC device that have no corresponding operation 3416region. This is allowed by the ACPI specification. This update removes a 3417dependency on the existence an ECDT table. It will execute an orphan _REG 3418method as long as the operation region handler for the EC is installed at 3419the EC device node and not the namespace root. Rui Zhang (original 3420update), Bob Moore (update/integrate). 3421 3422Implemented run-time argument typechecking for all predefined ACPI names 3423(_STA, _BIF, etc.) This change performs object typechecking on all 3424incoming arguments for all predefined names executed via 3425AcpiEvaluateObject. This ensures that ACPI-related device drivers are 3426passing correct object types as well as the correct number of arguments 3427(therefore identifying any issues immediately). Also, the ASL/namespace 3428definition of the predefined name is checked against the ACPI 3429specification for the proper argument count. Adds one new file, 3430nsarguments.c 3431 3432Changed an exception code for the ASL UnLoad() operator. Changed the 3433exception code for the case where the input DdbHandle is invalid, from 3434AE_BAD_PARAMETER to the more appropriate AE_AML_OPERAND_TYPE. 3435 3436Unix/Linux makefiles: Removed the use of the -O2 optimization flag in the 3437global makefile. The use of this flag causes compiler errors on earlier 3438versions of GCC, so it has been removed for compatibility. 3439 3440Miscellaneous cleanup: 34411) Removed some unused/obsolete macros 34422) Fixed a possible memory leak in the _OSI support 34433) Removed an unused variable in the predefined name support 34444) Windows OSL: remove obsolete reference to a memory list field 3445 3446Example Code and Data Size: These are the sizes for the OS-independent 3447acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3448debug version of the code includes the debug output trace mechanism and 3449has 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 34592) iASL Compiler/Disassembler and Tools: 3460 3461AcpiExec: Added installation of a handler for the SystemCMOS address 3462space. This prevents control method abort if a method accesses this 3463space. 3464 3465AcpiExec: Added support for multiple EC devices, and now install EC 3466operation region handler(s) at the actual EC device instead of the 3467namespace root. This reflects the typical behavior of host operating 3468systems. 3469 3470AcpiExec: Updated to ensure that all operation region handlers are 3471installed before the _REG methods are executed. This prevents a _REG 3472method from aborting if it accesses an address space has no handler. 3473AcpiExec installs a handler for every possible address space. 3474 3475Debugger: Enhanced the "handlers" command to display non-root handlers. 3476This change enhances the handlers command to display handlers associated 3477with individual devices throughout the namespace, in addition to the 3478currently supported display of handlers associated with the root 3479namespace 3480node. 3481 3482ASL Test Suite: Several test suite errors have been identified and 3483resolved, reducing the total error count during execution. Chao Guan. 3484 3485---------------------------------------- 348628 March 2013. Summary of changes for version 20130328: 3487 34881) ACPICA kernel-resident subsystem: 3489 3490Fixed several possible race conditions with the internal object reference 3491counting mechanism. Some of the external ACPICA interfaces update object 3492reference counts without holding the interpreter or namespace lock. This 3493change adds a spinlock to protect reference count updates on the internal 3494ACPICA objects. Reported by and with assistance from Andriy Gapon 3495(avg@FreeBSD.org). 3496 3497FADT support: Removed an extraneous warning for very large GPE register 3498sets. This change removes a size mismatch warning if the legacy length 3499field for a GPE register set is larger than the 64-bit GAS structure can 3500accommodate. GPE register sets can be larger than the 255-bit width 3501limitation of the GAS structure. Linn Crosetto (linn@hp.com). 3502 3503_OSI Support: handle any errors from AcpiOsAcquireMutex. Check for error 3504return from this interface. Handles a possible timeout case if 3505ACPI_WAIT_FOREVER is modified by the host to be a value less than 3506"forever". Jung-uk Kim. 3507 3508Predefined name support: Add allowed/required argument type information 3509to 3510the master predefined info table. This change adds the infrastructure to 3511enable typechecking on incoming arguments for all predefined 3512methods/objects. It does not actually contain the code that will fully 3513utilize this information, this is still under development. Also condenses 3514some duplicate code for the predefined names into a new module, 3515utilities/utpredef.c 3516 3517Example Code and Data Size: These are the sizes for the OS-independent 3518acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3519debug version of the code includes the debug output trace mechanism and 3520has 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 35302) iASL Compiler/Disassembler and Tools: 3531 3532iASL: Implemented a new option to simplify the development of ACPI- 3533related 3534BIOS code. Adds support for a new "offset table" output file. The -so 3535option will create a C table containing the AML table offsets of various 3536named objects in the namespace so that BIOS code can modify them easily 3537at 3538boot time. This can simplify BIOS runtime code by eliminating expensive 3539searches for "magic values", enhancing boot times and adding greater 3540reliability. With assistance from Lee Hamel. 3541 3542iASL: Allow additional predefined names to return zero-length packages. 3543Now, all predefined names that are defined by the ACPI specification to 3544return a "variable-length package of packages" are allowed to return a 3545zero length top-level package. This allows the BIOS to tell the host that 3546the requested feature is not supported, and supports existing BIOS/ASL 3547code and practices. 3548 3549iASL: Changed the "result not used" warning to an error. This is the case 3550where an ASL operator is effectively a NOOP because the result of the 3551operation is not stored anywhere. For example: 3552 Add (4, Local0) 3553There is no target (missing 3rd argument), nor is the function return 3554value used. This is potentially a very serious problem -- since the code 3555was probably intended to do something, but for whatever reason, the value 3556was not stored. Therefore, this issue has been upgraded from a warning to 3557an error. 3558 3559AcpiHelp: Added allowable/required argument types to the predefined names 3560info display. This feature utilizes the recent update to the predefined 3561names table (above). 3562 3563---------------------------------------- 356414 February 2013. Summary of changes for version 20130214: 3565 35661) ACPICA Kernel-resident Subsystem: 3567 3568Fixed a possible regression on some hosts: Reinstated the safe return 3569macros (return_ACPI_STATUS, etc.) that ensure that the argument is 3570evaluated only once. Although these macros are not needed for the ACPICA 3571code itself, they are often used by ACPI-related host device drivers 3572where 3573the safe feature may be necessary. 3574 3575Fixed several issues related to the ACPI 5.0 reduced hardware support 3576(SOC): Now ensure that if the platform declares itself as hardware- 3577reduced 3578via the FADT, the following functions become NOOPs (and always return 3579AE_OK) because ACPI is always enabled by definition on these machines: 3580 AcpiEnable 3581 AcpiDisable 3582 AcpiHwGetMode 3583 AcpiHwSetMode 3584 3585Dynamic Object Repair: Implemented additional runtime repairs for 3586predefined name return values. Both of these repairs can simplify code in 3587the related device drivers that invoke these methods: 35881) For the _STR and _MLS names, automatically repair/convert an ASCII 3589string to a Unicode buffer. 35902) For the _CRS, _PRS, and _DMA names, return a resource descriptor with 3591a 3592lone end tag descriptor in the following cases: A Return(0) was executed, 3593a null buffer was returned, or no object at all was returned (non-slack 3594mode only). Adds a new file, nsconvert.c 3595ACPICA BZ 998. Bob Moore, Lv Zheng. 3596 3597Resource Manager: Added additional code to prevent possible infinite 3598loops 3599while traversing corrupted or ill-formed resource template buffers. Check 3600for zero-length resource descriptors in all code that loops through 3601resource templates (the length field is used to index through the 3602template). This change also hardens the external AcpiWalkResources and 3603AcpiWalkResourceBuffer interfaces. 3604 3605Local Cache Manager: Enhanced the main data structure to eliminate an 3606unnecessary mechanism to access the next object in the list. Actually 3607provides a small performance enhancement for hosts that use the local 3608ACPICA cache manager. Jung-uk Kim. 3609 3610Example Code and Data Size: These are the sizes for the OS-independent 3611acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3612debug version of the code includes the debug output trace mechanism and 3613has 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 36232) iASL Compiler/Disassembler and Tools: 3624 3625iASL/Disassembler: Fixed several issues with the definition of the ACPI 36265.0 RASF table (RAS Feature Table). This change incorporates late changes 3627that were made to the ACPI 5.0 specification. 3628 3629iASL/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). 3632Includes header file, disassembler, table compiler, and template support 3633for both tables. 3634 3635iASL: Implemented compile-time validation of package objects returned by 3636predefined names. This new feature validates static package objects 3637returned by the various predefined names defined to return packages. Both 3638object types and package lengths are validated, for both parent packages 3639and sub-packages, if any. The code is similar in structure and behavior 3640to 3641the runtime repair mechanism within the AML interpreter and uses the 3642existing predefined name information table. Adds a new file, aslprepkg.c. 3643ACPICA BZ 938. 3644 3645iASL: Implemented auto-detection of binary ACPI tables for disassembly. 3646This feature detects a binary file with a valid ACPI table header and 3647invokes the disassembler automatically. Eliminates the need to 3648specifically invoke the disassembler with the -d option. ACPICA BZ 862. 3649 3650iASL/Disassembler: Added several warnings for the case where there are 3651unresolved control methods during the disassembly. This can potentially 3652cause errors when the output file is compiled, because the disassembler 3653assumes zero method arguments in these cases (it cannot determine the 3654actual number of arguments without resolution/definition of the method). 3655 3656Debugger: Added support to display all resources with a single command. 3657Invocation of the resources command with no arguments will now display 3658all 3659resources within the current namespace. 3660 3661AcpiHelp: Added descriptive text for each ACPICA exception code displayed 3662via the -e option. 3663 3664---------------------------------------- 366517 January 2013. Summary of changes for version 20130117: 3666 36671) ACPICA Kernel-resident Subsystem: 3668 3669Updated the AcpiGetSleepTypeData interface: Allow the \_Sx methods to 3670return either 1 or 2 integers. Although the ACPI spec defines the \_Sx 3671objects to return a package containing one integer, most BIOS code 3672returns 3673two integers and the previous code reflects that. However, we also need 3674to 3675support BIOS code that actually implements to the ACPI spec, and this 3676change reflects this. 3677 3678Fixed two issues with the ACPI_DEBUG_PRINT macros: 36791) Added the ACPI_DO_WHILE macro to the main DEBUG_PRINT helper macro for 3680C compilers that require this support. 36812) Renamed the internal ACPI_DEBUG macro to ACPI_DO_DEBUG_PRINT since 3682ACPI_DEBUG is already used by many of the various hosts. 3683 3684Updated all ACPICA copyrights and signons to 2013. Added the 2013 3685copyright to all module headers and signons, including the standard Linux 3686header. This affects virtually every file in the ACPICA core subsystem, 3687iASL compiler, all ACPICA utilities, and the test suites. 3688 3689Example Code and Data Size: These are the sizes for the OS-independent 3690acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3691debug version of the code includes the debug output trace mechanism and 3692has 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 37022) iASL Compiler/Disassembler and Tools: 3703 3704Generic Unix OSL: Use a buffer to eliminate multiple vfprintf()s and 3705prevent a possible fault on some hosts. Some C libraries modify the arg 3706pointer parameter to vfprintf making it difficult to call it twice in the 3707AcpiOsVprintf function. Use a local buffer to workaround this issue. This 3708does not affect the Windows OSL since the Win C library does not modify 3709the arg pointer. Chao Guan, Bob Moore. 3710 3711iASL: Fixed a possible infinite loop when the maximum error count is 3712reached. If an output file other than the .AML file is specified (such as 3713a listing file), and the maximum number of errors is reached, do not 3714attempt to flush data to the output file(s) as the compiler is aborting. 3715This can cause an infinite loop as the max error count code essentially 3716keeps calling itself. 3717 3718iASL/Disassembler: Added an option (-in) to ignore NOOP 3719opcodes/operators. 3720Implemented for both the compiler and the disassembler. Often, the NOOP 3721opcode is used as padding for packages that are changed dynamically by 3722the 3723BIOS. When disassembled and recompiled, these NOOPs will cause syntax 3724errors. This option causes the disassembler to ignore all NOOP opcodes 3725(0xA3), and it also causes the compiler to ignore all ASL source code 3726NOOP 3727statements as well. 3728 3729Debugger: Enhanced the Sleep command to execute all sleep states. This 3730change allows Sleep to be invoked with no arguments and causes the 3731debugger to execute all of the sleep states, 0-5, automatically. 3732 3733---------------------------------------- 373420 December 2012. Summary of changes for version 20121220: 3735 37361) ACPICA Kernel-resident Subsystem: 3737 3738Implemented a new interface, AcpiWalkResourceBuffer. This interface is an 3739alternate entry point for AcpiWalkResources and improves the usability of 3740the resource manager by accepting as input a buffer containing the output 3741of either a _CRS, _PRS, or _AEI method. The key functionality is that the 3742input buffer is not deleted by this interface so that it can be used by 3743the host later. See the ACPICA reference for details. 3744 3745Interpreter: 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 3747reflects that behavior. 3748 3749Resource Manager: Add support for the new ACPI 5.0 wake bit in the IRQ, 3750ExtendedInterrupt, and GpioInt descriptors. This change adds support to 3751both get and set the new wake bit in these descriptors, separately from 3752the existing share bit. Reported by Aaron Lu. 3753 3754Interpreter: Fix Store() when an implicit conversion is not possible. For 3755example, in the cases such as a store of a string to an existing package 3756object, implement the store as a CopyObject(). This is a small departure 3757from the ACPI specification which states that the control method should 3758be 3759aborted in this case. However, the ASLTS suite depends on this behavior. 3760 3761Performance improvement for the various FUNCTION_TRACE and DEBUG_PRINT 3762macros: check if debug output is currently enabled as soon as possible to 3763minimize performance impact if debug is in fact not enabled. 3764 3765Source code restructuring: Cleanup to improve modularity. The following 3766new files have been added: dbconvert.c, evhandler.c, nsprepkg.c, 3767psopinfo.c, psobject.c, rsdumpinfo.c, utstring.c, and utownerid.c. 3768Associated makefiles and project files have been updated. 3769 3770Changed an exception code for LoadTable operator. For the case where one 3771of the input strings is too long, change the returned exception code from 3772AE_BAD_PARAMETER to AE_AML_STRING_LIMIT. 3773 3774Fixed a possible memory leak in dispatcher error path. On error, delete 3775the mutex object created during method mutex creation. Reported by 3776tim.gardner@canonical.com. 3777 3778Example Code and Data Size: These are the sizes for the OS-independent 3779acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3780debug version of the code includes the debug output trace mechanism and 3781has 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 37912) iASL Compiler/Disassembler and Tools: 3792 3793iASL: Disallow a method call as argument to the ObjectType ASL operator. 3794This change tracks an errata to the ACPI 5.0 document. The AML grammar 3795will not allow the interpreter to differentiate between a method and a 3796method invocation when these are used as an argument to the ObjectType 3797operator. The ACPI specification change is to disallow a method 3798invocation 3799(UserTerm) for the ObjectType operator. 3800 3801Finish support for the TPM2 and CSRT tables in the headers, table 3802compiler, and disassembler. 3803 3804Unix user-space OSL: Fix a problem with WaitSemaphore where the timeout 3805always expires immediately if the semaphore is not available. The 3806original 3807code was using a relative-time timeout, but sem_timedwait requires the 3808use 3809of an absolute time. 3810 3811iASL: Added a remark if the Timer() operator is used within a 32-bit 3812table. This operator returns a 64-bit time value that will be truncated 3813within a 32-bit table. 3814 3815iASL Source code restructuring: Cleanup to improve modularity. The 3816following new files have been added: aslhex.c, aslxref.c, aslnamesp.c, 3817aslmethod.c, and aslfileio.c. Associated makefiles and project files have 3818been updated. 3819 3820 3821---------------------------------------- 382214 November 2012. Summary of changes for version 20121114: 3823 38241) ACPICA Kernel-resident Subsystem: 3825 3826Implemented a performance enhancement for ACPI/AML Package objects. This 3827change greatly increases the performance of Package objects within the 3828interpreter. It changes the processing of reference counts for packages 3829by 3830optimizing for the most common case where the package sub-objects are 3831either Integers, Strings, or Buffers. Increases the overall performance 3832of 3833the ASLTS test suite by 1.5X (Increases the Slack Mode performance by 38342X.) 3835Chao Guan. ACPICA BZ 943. 3836 3837Implemented and deployed common macros to extract flag bits from resource 3838descriptors. Improves readability and maintainability of the code. Fixes 3839a 3840problem with the UART serial bus descriptor for the number of data bits 3841flags (was incorrectly 2 bits, should be 3). 3842 3843Enhanced the ACPI_GETx and ACPI_SETx macros. Improved the implementation 3844of the macros and changed the SETx macros to the style of (destination, 3845source). Also added ACPI_CASTx companion macros. Lv Zheng. 3846 3847Example Code and Data Size: These are the sizes for the OS-independent 3848acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3849debug version of the code includes the debug output trace mechanism and 3850has 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 38602) iASL Compiler/Disassembler and Tools: 3861 3862Disassembler: Added the new ACPI 5.0 interrupt sharing flags. This change 3863adds the ShareAndWake and ExclusiveAndWake flags which were added to the 3864Irq, Interrupt, and Gpio resource descriptors in ACPI 5.0. ACPICA BZ 986. 3865 3866Disassembler: Fixed a problem with external declaration generation. Fixes 3867a problem where an incorrect pathname could be generated for an external 3868declaration if the original reference to the object includes leading 3869carats (^). ACPICA BZ 984. 3870 3871Debugger: Completed a major update for the Disassemble<method> command. 3872This command was out-of-date and did not properly disassemble control 3873methods that had any reasonable complexity. This fix brings the command 3874up 3875to the same level as the rest of the disassembler. Adds one new file, 3876dmdeferred.c, which is existing code that is now common with the main 3877disassembler and the debugger disassemble command. ACPICA MZ 978. 3878 3879iASL: Moved the parser entry prototype to avoid a duplicate declaration. 3880Newer versions of Bison emit this prototype, so moved the prototype out 3881of 3882the iASL header to where it is actually used in order to avoid a 3883duplicate 3884declaration. 3885 3886iASL/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 3891Improves reliability and maintainability of the code. Bob Moore, Lv 3892Zheng. 3893ACPICA BZ 981. 3894 3895Disassembler: Prevent duplicate External() statements. During generation 3896of external statements, detect similar pathnames that are actually 3897duplicates such as these: 3898 External (\ABCD) 3899 External (ABCD) 3900Remove all leading '\' characters from pathnames during the external 3901statement generation so that duplicates will be detected and tossed. 3902ACPICA BZ 985. 3903 3904Tools: Replace low-level I/O with stream I/O functions. Replace 3905open/read/write/close with the stream I/O equivalents 3906fopen/fread/fwrite/fclose for portability and performance. Lv Zheng, Bob 3907Moore. 3908 3909AcpiBin: Fix for the dump-to-hex function. Now correctly output the table 3910name header so that AcpiXtract recognizes the output file/table. 3911 3912iASL: Remove obsolete -2 option flag. Originally intended to force the 3913compiler/disassembler into an ACPI 2.0 mode, this was never implemented 3914and the entire concept is now obsolete. 3915 3916---------------------------------------- 391718 October 2012. Summary of changes for version 20121018: 3918 3919 39201) ACPICA Kernel-resident Subsystem: 3921 3922Updated support for the ACPI 5.0 MPST table. Fixes some problems 3923introduced by late changes to the table as it was added to the ACPI 5.0 3924specification. Includes header, disassembler, and data table compiler 3925support as well as a new version of the MPST template. 3926 3927AcpiGetObjectInfo: Enhanced the device object support to include the ACPI 39285.0 _SUB method. Now calls _SUB in addition to the other PNP-related ID 3929methods: _HID, _CID, and _UID. 3930 3931Changed ACPI_DEVICE_ID to ACPI_PNP_DEVICE_ID. Also changed 3932ACPI_DEVICE_ID_LIST to ACPI_PNP_DEVICE_ID_LIST. These changes prevent 3933name collisions on hosts that reserve the *_DEVICE_ID (or *DeviceId) 3934names for their various drivers. Affects the AcpiGetObjectInfo external 3935interface, and other internal interfaces as well. 3936 3937Added and deployed a new macro for ACPI_NAME management: ACPI_MOVE_NAME. 3938This macro resolves to a simple 32-bit move of the 4-character ACPI_NAME 3939on machines that support non-aligned transfers. Optimizes for this case 3940rather than using a strncpy. With assistance from Zheng Lv. 3941 3942Resource Manager: Small fix for buffer size calculation. Fixed a one byte 3943error in the output buffer calculation. Feng Tang. ACPICA BZ 849. 3944 3945Added a new debug print message for AML mutex objects that are force- 3946released. At control method termination, any currently acquired mutex 3947objects are force-released. Adds a new debug-only message for each one 3948that is released. 3949 3950Audited/updated all ACPICA return macros and the function debug depth 3951counter: 1) Ensure that all functions that use the various TRACE macros 3952also use the appropriate ACPICA return macros. 2) Ensure that all normal 3953return statements surround the return expression (value) with parens to 3954ensure consistency across the ACPICA code base. Guan Chao, Tang Feng, 3955Zheng Lv, Bob Moore. ACPICA Bugzilla 972. 3956 3957Global source code changes/maintenance: All extra lines at the start and 3958end of each source file have been removed for consistency. Also, within 3959comments, all new sentences start with a single space instead of a double 3960space, again for consistency across the code base. 3961 3962Example Code and Data Size: These are the sizes for the OS-independent 3963acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3964debug version of the code includes the debug output trace mechanism and 3965has 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 39752) iASL Compiler/Disassembler and Tools: 3976 3977AcpiExec: Improved the algorithm used for memory leak/corruption 3978detection. Added some intelligence to the code that maintains the global 3979list of allocated memory. The list is now ordered by allocated memory 3980address, significantly improving performance. When running AcpiExec on 3981the ASLTS test suite, speed improvements of 3X to 5X are seen, depending 3982on the platform and/or the environment. Note, this performance 3983enhancement affects the AcpiExec utility only, not the kernel-resident 3984ACPICA code. 3985 3986Enhanced error reporting for invalid AML opcodes and bad ACPI_NAMEs. For 3987the disassembler, dump the 48 bytes surrounding the invalid opcode. Fix 3988incorrect table offset reported for invalid opcodes. Report the original 398932-bit value for bad ACPI_NAMEs (as well as the repaired name.) 3990 3991Disassembler: Enhanced the -vt option to emit the binary table data in 3992hex format to assist with debugging. 3993 3994Fixed a potential filename buffer overflow in osunixdir.c. Increased the 3995size of file structure. Colin Ian King. 3996 3997---------------------------------------- 399813 September 2012. Summary of changes for version 20120913: 3999 4000 40011) ACPICA Kernel-resident Subsystem: 4002 4003ACPI 5.0: Added two new notify types for the Hardware Error Notification 4004Structure within the Hardware Error Source Table (HEST) table -- CMCI(5) 4005and 4006MCE(6). 4007 4008Table Manager: Merged/removed duplicate code in the root table resize 4009functions. One function is external, the other is internal. Lv Zheng, 4010ACPICA 4011BZ 846. 4012 4013Makefiles: Completely removed the obsolete "Linux" makefiles under 4014acpica/generate/linux. These makefiles are obsolete and have been 4015replaced 4016by 4017the generic unix makefiles under acpica/generate/unix. 4018 4019Makefiles: Ensure that binary files always copied properly. Minor rule 4020change 4021to ensure that the final binary output files are always copied up to the 4022appropriate binary directory (bin32 or bin64.) 4023 4024Example Code and Data Size: These are the sizes for the OS-independent 4025acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4026debug 4027version of the code includes the debug output trace mechanism and has a 4028much 4029larger 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 40392) iASL Compiler/Disassembler and Tools: 4040 4041Disassembler: Fixed a possible fault during the disassembly of resource 4042descriptors when a second parse is required because of the invocation of 4043external control methods within the table. With assistance from 4044adq@lidskialf.net. ACPICA BZ 976. 4045 4046iASL: Fixed a namepath optimization problem. An error can occur if the 4047parse 4048node that contains the namepath to be optimized does not have a parent 4049node 4050that is a named object. This change fixes the problem. 4051 4052iASL: Fixed a regression where the AML file is not deleted on errors. The 4053AML 4054output file should be deleted if there are any errors during the 4055compiler. 4056The 4057only exception is if the -f (force output) option is used. ACPICA BZ 974. 4058 4059iASL: Added a feature to automatically increase internal line buffer 4060sizes. 4061Via realloc(), automatically increase the internal line buffer sizes as 4062necessary to support very long source code lines. The current version of 4063the 4064preprocessor requires a buffer long enough to contain full source code 4065lines. 4066This change increases the line buffer(s) if the input lines go beyond the 4067current buffer size. This eliminates errors that occurred when a source 4068code 4069line was longer than the buffer. 4070 4071iASL: Fixed a problem with constant folding in method declarations. The 4072SyncLevel term is a ByteConstExpr, and incorrect code would be generated 4073if a 4074Type3 opcode was used. 4075 4076Debugger: Improved command help support. For incorrect argument count, 4077display 4078full help for the command. For help command itself, allow an argument to 4079specify a command. 4080 4081Test Suites: Several bug fixes for the ASLTS suite reduces the number of 4082errors during execution of the suite. Guan Chao. 4083 4084---------------------------------------- 408516 August 2012. Summary of changes for version 20120816: 4086 4087 40881) ACPICA Kernel-resident Subsystem: 4089 4090Removed 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 4093deprecated and will probably be removed from the ACPI specification. 4094Windows 4095does not invoke them, and reportedly never will. The final nail in the 4096coffin 4097is that the ACPI specification states that these methods must be run with 4098interrupts off, which is not going to happen in a kernel interpreter. 4099Note: 4100Linux has removed all use of the methods also. It was discovered that 4101invoking these functions caused failures on some machines, probably 4102because 4103they were never tested since Windows does not call them. Affects two 4104external 4105interfaces, AcpiEnterSleepState and AcpiLeaveSleepStatePrep. Tang Feng. 4106ACPICA BZ 969. 4107 4108Implemented support for complex bit-packed buffers returned from the _PLD 4109(Physical Location of Device) predefined method. Adds a new external 4110interface, AcpiDecodePldBuffer that parses the buffer into a more usable 4111C 4112structure. Note: C Bitfields cannot be used for this type of predefined 4113structure since the memory layout of individual bitfields is not defined 4114by 4115the C language. In addition, there are endian concerns where a compiler 4116will 4117change the bitfield ordering based on the machine type. The new ACPICA 4118interface eliminates these issues, and should be called after _PLD is 4119executed. ACPICA BZ 954. 4120 4121Implemented a change to allow a scope change to root (via "Scope (\)") 4122during 4123execution of module-level ASL code (code that is executed at table load 4124time.) Lin Ming. 4125 4126Added the Windows8/Server2012 string for the _OSI method. This change 4127adds 4128a 4129new _OSI string, "Windows 2012" for both Windows 8 and Windows Server 41302012. 4131 4132Added header support for the new ACPI tables DBG2 (Debug Port Table Type 41332) 4134and CSRT (Core System Resource Table). 4135 4136Added struct header support for the _FDE, _GRT, _GTM, and _SRT predefined 4137names. This simplifies access to the buffers returned by these predefined 4138names. Adds a new file, include/acbuffer.h. ACPICA BZ 956. 4139 4140GPE support: Removed an extraneous parameter from the various low-level 4141internal GPE functions. Tang Feng. 4142 4143Removed the linux makefiles from the unix packages. The generate/linux 4144makefiles are obsolete and have been removed from the unix tarball 4145release 4146packages. The replacement makefiles are under generate/unix, and there is 4147a 4148top-level makefile under the main acpica directory. ACPICA BZ 967, 912. 4149 4150Updates for Unix makefiles: 41511) Add -D_FORTIFY_SOURCE=2 for gcc generation. Arjan van de Ven. 41522) Update linker flags (move to end of command line) for AcpiExec 4153utility. 4154Guan Chao. 4155 4156Split ACPICA initialization functions to new file, utxfinit.c. Split from 4157utxface.c to improve modularity and reduce file size. 4158 4159Example Code and Data Size: These are the sizes for the OS-independent 4160acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4161debug version of the code includes the debug output trace mechanism and 4162has a 4163much 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 41732) iASL Compiler/Disassembler and Tools: 4174 4175iASL: Fixed a problem with constant folding for fixed-length constant 4176expressions. The constant-folding code was not being invoked for constant 4177expressions that allow the use of type 3/4/5 opcodes to generate 4178constants 4179for expressions such as ByteConstExpr, WordConstExpr, etc. This could 4180result 4181in the generation of invalid AML bytecode. ACPICA BZ 970. 4182 4183iASL: Fixed a generation issue on newer versions of Bison. Newer versions 4184apparently automatically emit some of the necessary externals. This 4185change 4186handles these versions in order to eliminate generation warnings. 4187 4188Disassembler: Added support to decode the DBG2 and CSRT ACPI tables. 4189 4190Disassembler: Add support to decode _PLD buffers. The decoded buffer 4191appears 4192within comments in the output file. 4193 4194Debugger: Fixed a regression with the "Threads" command where 4195AE_BAD_PARAMETER was always returned. 4196 4197---------------------------------------- 419811 July 2012. Summary of changes for version 20120711: 4199 42001) ACPICA Kernel-resident Subsystem: 4201 4202Fixed a possible fault in the return package object repair code. Fixes a 4203problem that can occur when a lone package object is wrapped with an 4204outer 4205package object in order to force conformance to the ACPI specification. 4206Can 4207affect these predefined names: _ALR, _MLS, _PSS, _TRT, _TSS, _PRT, _HPX, 4208_DLM, 4209_CSD, _PSD, _TSD. 4210 4211Removed code to disable/enable bus master arbitration (ARB_DIS bit in the 4212PM2_CNT register) in the ACPICA sleep/wake interfaces. Management of the 4213ARB_DIS bit must be implemented in the host-dependent C3 processor power 4214state 4215support. Note, ARB_DIS is obsolete and only applies to older chipsets, 4216both 4217Intel and other vendors. (for Intel: ICH4-M and earlier) 4218 4219This change removes the code to disable/enable bus master arbitration 4220during 4221suspend/resume. Use of the ARB_DIS bit in the optional PM2_CNT register 4222causes 4223resume problems on some machines. The change has been in use for over 4224seven 4225years within Linux. 4226 4227Implemented two new external interfaces to support host-directed dynamic 4228ACPI 4229table load and unload. They are intended to simplify the host 4230implementation 4231of 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 4234table. 4235See the ACPICA reference for additional details. Adds one new file, 4236components/tables/tbxfload.c 4237 4238Implemented and deployed two new interfaces for errors and warnings that 4239are 4240known to be caused by BIOS/firmware issues: 4241 AcpiBiosError: Prints "ACPI Firmware Error" message. 4242 AcpiBiosWarning: Prints "ACPI Firmware Warning" message. 4243Deployed these new interfaces in the ACPICA Table Manager code for ACPI 4244table 4245and FADT errors. Additional deployment to be completed as appropriate in 4246the 4247future. The associated conditional macros are ACPI_BIOS_ERROR and 4248ACPI_BIOS_WARNING. See the ACPICA reference for additional details. 4249ACPICA 4250BZ 4251843. 4252 4253Implicit notify support: ensure that no memory allocation occurs within a 4254critical region. This fix moves a memory allocation outside of the time 4255that a 4256spinlock is held. Fixes issues on systems that do not allow this 4257behavior. 4258Jung-uk Kim. 4259 4260Split exception code utilities and tables into a new file, 4261utilities/utexcep.c 4262 4263Example Code and Data Size: These are the sizes for the OS-independent 4264acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4265debug 4266version of the code includes the debug output trace mechanism and has a 4267much 4268larger 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 42782) iASL Compiler/Disassembler and Tools: 4279 4280iASL: Fixed a parser problem for hosts where EOF is defined as -1 instead 4281of 42820. Jung-uk Kim. 4283 4284Debugger: Enhanced the "tables" command to emit additional information 4285about 4286the current set of ACPI tables, including the owner ID and flags decode. 4287 4288Debugger: Reimplemented the "unload" command to use the new 4289AcpiUnloadParentTable external interface. This command was disable 4290previously 4291due to need for an unload interface. 4292 4293AcpiHelp: Added a new option to decode ACPICA exception codes. The -e 4294option 4295will decode 16-bit hex status codes (ACPI_STATUS) to name strings. 4296 4297---------------------------------------- 429820 June 2012. Summary of changes for version 20120620: 4299 4300 43011) ACPICA Kernel-resident Subsystem: 4302 4303Implemented support to expand the "implicit notify" feature to allow 4304multiple 4305devices to be notified by a single GPE. This feature automatically 4306generates a 4307runtime device notification in the absence of a BIOS-provided GPE control 4308method (_Lxx/_Exx) or a host-installed handler for the GPE. Implicit 4309notify is 4310provided by ACPICA for Windows compatibility, and is a workaround for 4311BIOS 4312AML 4313code errors. See the description of the AcpiSetupGpeForWake interface in 4314the 4315APCICA reference. Bob Moore, Rafael Wysocki. ACPICA BZ 918. 4316 4317Changed some comments and internal function names to simplify and ensure 4318correctness of the Linux code translation. No functional changes. 4319 4320Example Code and Data Size: These are the sizes for the OS-independent 4321acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4322debug 4323version of the code includes the debug output trace mechanism and has a 4324much 4325larger 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 43352) iASL Compiler/Disassembler and Tools: 4336 4337Disassembler: Added support to emit short, commented descriptions for the 4338ACPI 4339predefined names in order to improve the readability of the disassembled 4340output. ACPICA BZ 959. Changes include: 4341 1) Emit descriptions for all standard predefined names (_INI, _STA, 4342_PRW, 4343etc.) 4344 2) Emit generic descriptions for the special names (_Exx, _Qxx, etc.) 4345 3) Emit descriptions for the resource descriptor names (_MIN, _LEN, 4346etc.) 4347 4348AcpiSrc: Fixed several long-standing Linux code translation issues. 4349Argument 4350descriptions in function headers are now translated properly to lower 4351case 4352and 4353underscores. ACPICA BZ 961. Also fixes translation problems such as 4354these: 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 4362iASL: Fixed a problem where null bytes were inadvertently emitted into 4363some 4364listing files. 4365 4366iASL: Added the existing debug options to the standard help screen. There 4367are 4368no longer two different help screens. ACPICA BZ 957. 4369 4370AcpiHelp: Fixed some typos in the various predefined name descriptions. 4371Also 4372expand some of the descriptions where appropriate. 4373 4374iASL: Fixed the -ot option (display compile times/statistics). Was not 4375working 4376properly for standard output; only worked for the debug file case. 4377 4378---------------------------------------- 437918 May 2012. Summary of changes for version 20120518: 4380 4381 43821) ACPICA Core Subsystem: 4383 4384Added a new OSL interface, AcpiOsWaitEventsComplete. This interface is 4385defined 4386to block until asynchronous events such as notifies and GPEs have 4387completed. 4388Within ACPICA, it is only called before a notify or GPE handler is 4389removed/uninstalled. It also may be useful for the host OS within related 4390drivers such as the Embedded Controller driver. See the ACPICA reference 4391for 4392additional information. ACPICA BZ 868. 4393 4394ACPI Tables: Added a new error message for a possible overflow failure 4395during 4396the conversion of FADT 32-bit legacy register addresses to internal 4397common 439864- 4399bit GAS structure representation. The GAS has a one-byte "bit length" 4400field, 4401thus limiting the register length to 255 bits. ACPICA BZ 953. 4402 4403Example Code and Data Size: These are the sizes for the OS-independent 4404acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4405debug 4406version of the code includes the debug output trace mechanism and has a 4407much 4408larger 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 44182) iASL Compiler/Disassembler and Tools: 4419 4420iASL: Added the ACPI 5.0 "PCC" keyword for use in the Register() ASL 4421macro. 4422This keyword was added late in the ACPI 5.0 release cycle and was not 4423implemented until now. 4424 4425Disassembler: Added support for Operation Region externals. Adds missing 4426support for operation regions that are defined in another table, and 4427referenced locally via a Field or BankField ASL operator. Now generates 4428the 4429correct External statement. 4430 4431Disassembler: Several additional fixes for the External() statement 4432generation 4433related to some ASL operators. Also, order the External() statements 4434alphabetically in the disassembler output. Fixes the External() 4435generation 4436for 4437the Create* field, Alias, and Scope operators: 4438 1) Create* buffer field operators - fix type mismatch warning on 4439disassembly 4440 2) Alias - implement missing External support 4441 3) Scope - fix to make sure all necessary externals are emitted. 4442 4443iASL: Improved pathname support. For include files, merge the prefix 4444pathname 4445with the file pathname and eliminate unnecessary components. Convert 4446backslashes in all pathnames to forward slashes, for readability. Include 4447file 4448pathname changes affect both #include and Include() type operators. 4449 4450iASL/DTC/Preprocessor: Gracefully handle early EOF. Handle an EOF at the 4451end 4452of a valid line by inserting a newline and then returning the EOF during 4453the 4454next call to GetNextLine. Prevents the line from being ignored due to EOF 4455condition. 4456 4457iASL: Implemented some changes to enhance the IDE support (-vi option.) 4458Error 4459and Warning messages are now correctly recognized for both the source 4460code 4461browser and the global error and warning counts. 4462 4463---------------------------------------- 446420 April 2012. Summary of changes for version 20120420: 4465 4466 44671) ACPICA Core Subsystem: 4468 4469Implemented support for multiple notify handlers. This change adds 4470support 4471to 4472allow multiple system and device notify handlers on Device, Thermal Zone, 4473and 4474Processor objects. This can simplify the host OS notification 4475implementation. 4476Also re-worked and restructured the entire notify support code to 4477simplify 4478handler installation, handler removal, notify event queuing, and notify 4479dispatch to handler(s). Note: there can still only be two global notify 4480handlers - one for system notifies and one for device notifies. There are 4481no 4482changes to the existing handler install/remove interfaces. Lin Ming, Bob 4483Moore, Rafael Wysocki. 4484 4485Fixed a regression in the package repair code where the object reference 4486count was calculated incorrectly. Regression was introduced in the commit 4487"Support to add Package wrappers". 4488 4489Fixed a couple possible memory leaks in the AML parser, in the error 4490recovery 4491path. Jesper Juhl, Lin Ming. 4492 4493Example Code and Data Size: These are the sizes for the OS-independent 4494acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4495debug version of the code includes the debug output trace mechanism and 4496has a 4497much 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 45072) iASL Compiler/Disassembler and Tools: 4508 4509iASL: Fixed a problem with the resource descriptor support where the 4510length 4511of the StartDependentFn and StartDependentFnNoPrio descriptors were not 4512included in cumulative descriptor offset, resulting in incorrect values 4513for 4514resource tags within resource descriptors appearing after a 4515StartDependent* 4516descriptor. Reported by Petr Vandrovec. ACPICA BZ 949. 4517 4518iASL and Preprocessor: Implemented full support for the #line directive 4519to 4520correctly track original source file line numbers through the .i 4521preprocessor 4522output file - for error and warning messages. 4523 4524iASL: Expand the allowable byte constants for address space IDs. 4525Previously, 4526the allowable range was 0x80-0xFF (user-defined spaces), now the range is 45270x0A-0xFF to allow for custom and new IDs without changing the compiler. 4528 4529iASL: Add option to treat all warnings as errors (-we). ACPICA BZ 948. 4530 4531iASL: Add option to completely disable the preprocessor (-Pn). 4532 4533iASL: Now emit all error/warning messages to standard error (stderr) by 4534default (instead of the previous stdout). 4535 4536ASL Test Suite (ASLTS): Reduce iASL warnings due to use of Switch(). 4537Update 4538for resource descriptor offset fix above. Update/cleanup error output 4539routines. Enable and send iASL errors/warnings to an error logfile 4540(error.txt). Send all other iASL output to a logfile (compiler.txt). 4541Fixed 4542several extraneous "unrecognized operator" messages. 4543 4544---------------------------------------- 454520 March 2012. Summary of changes for version 20120320: 4546 4547 45481) ACPICA Core Subsystem: 4549 4550Enhanced the sleep/wake interfaces to optionally execute the _GTS method 4551(Going To Sleep) and the _BFS method (Back From Sleep). Windows 4552apparently 4553does not execute these methods, and therefore these methods are often 4554untested. It has been seen on some systems where the execution of these 4555methods causes errors and also prevents the machine from entering S5. It 4556is 4557therefore suggested that host operating systems do not execute these 4558methods 4559by default. In the future, perhaps these methods can be optionally 4560executed 4561based on the age of the system and/or what is the newest version of 4562Windows 4563that the BIOS asks for via _OSI. Changed interfaces: AcpiEnterSleepState 4564and 4565AcpileaveSleepStatePrep. See the ACPICA reference and Linux BZ 13041. Lin 4566Ming. 4567 4568Fixed a problem where the length of the local/common FADT was set too 4569early. 4570The local FADT table length cannot be set to the common length until the 4571original length has been examined. There is code that checks the table 4572length 4573and sets various fields appropriately. This can affect older machines 4574with 4575early FADT versions. For example, this can cause inadvertent writes to 4576the 4577CST_CNT register. Julian Anastasov. 4578 4579Fixed a mapping issue related to a physical table override. Use the 4580deferred 4581mapping mechanism for tables loaded via the physical override OSL 4582interface. 4583This allows for early mapping before the virtual memory manager is 4584available. 4585Thomas Renninger, Bob Moore. 4586 4587Enhanced the automatic return-object repair code: Repair a common problem 4588with 4589predefined methods that are defined to return a variable-length Package 4590of 4591sub-objects. If there is only one sub-object, some BIOS ASL code 4592mistakenly 4593simply returns the single object instead of a Package with one sub- 4594object. 4595This new support will repair this error by wrapping a Package object 4596around 4597the original object, creating the correct and expected Package with one 4598sub- 4599object. 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 4602939. 4603 4604Changed the exception code returned for invalid ACPI paths passed as 4605parameters to external interfaces such as AcpiEvaluateObject. Was 4606AE_BAD_PARAMETER, now is the more sensible AE_BAD_PATHNAME. 4607 4608Example Code and Data Size: These are the sizes for the OS-independent 4609acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4610debug 4611version of the code includes the debug output trace mechanism and has a 4612much 4613larger 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 46232) iASL Compiler/Disassembler and Tools: 4624 4625iASL: Added the infrastructure and initial implementation of a integrated 4626C- 4627like preprocessor. This will simplify BIOS development process by 4628eliminating 4629the need for a separate preprocessing step during builds. On Windows, it 4630also 4631eliminates the need to install a separate C compiler. ACPICA BZ 761. Some 4632features including full #define() macro support are still under 4633development. 4634These 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 4647In 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 4652Table Compiler: Fixed a problem where the equals operator within an 4653expression 4654did not work properly. 4655 4656Updated iASL to use the current versions of Bison/Flex. Updated the 4657Windows 4658project file to invoke these tools from the standard location. ACPICA BZ 4659904. 4660Versions supported: 4661 Flex for Windows: V2.5.4 4662 Bison for Windows: V2.4.1 4663 4664---------------------------------------- 466515 February 2012. Summary of changes for version 20120215: 4666 4667 46681) ACPICA Core Subsystem: 4669 4670There have been some major changes to the sleep/wake support code, as 4671described below (a - e). 4672 4673a) The AcpiLeaveSleepState has been split into two interfaces, similar to 4674AcpiEnterSleepStatePrep and AcpiEnterSleepState. The new interface is 4675AcpiLeaveSleepStatePrep. This allows the host to perform actions between 4676the 4677time the _BFS method is called and the _WAK method is called. NOTE: all 4678hosts 4679must update their wake/resume code or else sleep/wake will not work 4680properly. 4681Rafael Wysocki. 4682 4683b) In AcpiLeaveSleepState, now enable all runtime GPEs before calling the 4684_WAK 4685method. Some machines require that the GPEs are enabled before the _WAK 4686method 4687is executed. Thomas Renninger. 4688 4689c) In AcpiLeaveSleepState, now always clear the WAK_STS (wake status) 4690bit. 4691Some BIOS code assumes that WAK_STS will be cleared on resume and use it 4692to 4693determine whether the system is rebooting or resuming. Matthew Garrett. 4694 4695d) Move the invocations of _GTS (Going To Sleep) and _BFS (Back From 4696Sleep) to 4697match the ACPI specification requirement. Rafael Wysocki. 4698 4699e) Implemented full support for the ACPI 5.0 SleepStatus and SleepControl 4700registers within the V5 FADT. This support adds two new files: 4701hardware/hwesleep.c implements the support for the new registers. Moved 4702all 4703sleep/wake external interfaces to hardware/hwxfsleep.c. 4704 4705 4706Added a new OSL interface for ACPI table overrides, 4707AcpiOsPhysicalTableOverride. This interface allows the host to override a 4708table via a physical address, instead of the logical address required by 4709AcpiOsTableOverride. This simplifies the host implementation. Initial 4710implementation by Thomas Renninger. The ACPICA implementation creates a 4711single 4712shared function for table overrides that attempts both a logical and a 4713physical override. 4714 4715Expanded the OSL memory read/write interfaces to 64-bit data 4716(AcpiOsReadMemory, AcpiOsWriteMemory.) This enables full 64-bit memory 4717transfer support for GAS register structures passed to AcpiRead and 4718AcpiWrite. 4719 4720Implemented the ACPI_REDUCED_HARDWARE option to allow the creation of a 4721custom 4722build of ACPICA that supports only the ACPI 5.0 reduced hardware (SoC) 4723model. 4724See the ACPICA reference for details. ACPICA BZ 942. This option removes 4725about 472610% of the code and 5% of the static data, and the following hardware 4727ACPI 4728features 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 4737Updated the unix tarball directory structure to match the ACPICA git 4738source 4739tree. This ensures that the generic unix makefiles work properly (in 4740generate/unix). Also updated the Linux makefiles to match. ACPICA BZ 4741867. 4742 4743Updated the return value of the _REV predefined method to integer value 5 4744to 4745reflect ACPI 5.0 support. 4746 4747Moved the external ACPI PM timer interface prototypes to the public 4748acpixf.h 4749file where they belong. 4750 4751Example Code and Data Size: These are the sizes for the OS-independent 4752acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4753debug 4754version of the code includes the debug output trace mechanism and has a 4755much 4756larger 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 47662) iASL Compiler/Disassembler and Tools: 4767 4768Disassembler: Fixed a problem with the new ACPI 5.0 serial resource 4769descriptors (I2C, SPI, UART) where the resource produce/consumer bit was 4770incorrectly displayed. 4771 4772AcpiHelp: Add display of ACPI/PNP device IDs that are defined in the ACPI 4773specification. 4774 4775---------------------------------------- 477611 January 2012. Summary of changes for version 20120111: 4777 4778 47791) ACPICA Core Subsystem: 4780 4781Implemented a new mechanism to allow host device drivers to check for 4782address 4783range conflicts with ACPI Operation Regions. Both SystemMemory and 4784SystemIO 4785address spaces are supported. A new external interface, 4786AcpiCheckAddressRange, 4787allows drivers to check an address range against the ACPI namespace. See 4788the 4789ACPICA reference for additional details. Adds one new file, 4790utilities/utaddress.c. Lin Ming, Bob Moore. 4791 4792Fixed several issues with the ACPI 5.0 FADT support: Add the sleep 4793Control 4794and 4795Status registers, update the ACPI 5.0 flags, and update internal data 4796structures to handle an FADT larger than 256 bytes. The size of the ACPI 47975.0 4798FADT is 268 bytes. 4799 4800Updated all ACPICA copyrights and signons to 2012. Added the 2012 4801copyright to 4802all module headers and signons, including the standard Linux header. This 4803affects virtually every file in the ACPICA core subsystem, iASL compiler, 4804and 4805all ACPICA utilities. 4806 4807Example Code and Data Size: These are the sizes for the OS-independent 4808acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4809debug 4810version of the code includes the debug output trace mechanism and has a 4811much 4812larger 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 48222) iASL Compiler/Disassembler and Tools: 4823 4824Disassembler: fixed a problem with the automatic resource tag generation 4825support. Fixes a problem where the resource tags are inadvertently not 4826constructed if the table being disassembled contains external references 4827to 4828control methods. Moved the actual construction of the tags to after the 4829final 4830namespace is constructed (after 2nd parse is invoked due to external 4831control 4832method references.) ACPICA BZ 941. 4833 4834Table Compiler: Make all "generic" operators caseless. These are the 4835operators 4836like UINT8, String, etc. Making these caseless improves ease-of-use. 4837ACPICA BZ 4838934. 4839 4840---------------------------------------- 484123 November 2011. Summary of changes for version 20111123: 4842 48430) ACPI 5.0 Support: 4844 4845This release contains full support for the ACPI 5.0 specification, as 4846summarized below. 4847 4848Reduced Hardware Support: 4849------------------------- 4850 4851This support allows for ACPI systems without the usual ACPI hardware. 4852This 4853support is enabled by a flag in the revision 5 FADT. If it is set, ACPICA 4854will 4855not attempt to initialize or use any of the usual ACPI hardware. Note, 4856when 4857this flag is set, all of the following ACPI hardware is assumed to be not 4858present 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 4868ACPI Tables: 4869------------ 4870 4871All new tables and updates to existing tables are fully supported in the 4872ACPICA headers (for use by device drivers), the disassembler, and the 4873iASL 4874Data 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 4885Operation Regions/SpaceIDs: 4886--------------------------- 4887 4888All new operation regions are fully supported by the iASL compiler, the 4889disassembler, and the ACPICA runtime code (for dispatch to region 4890handlers.) 4891The new operation region Space IDs are: 4892 4893 GeneralPurposeIo 4894 GenericSerialBus 4895 4896Resource Descriptors: 4897--------------------- 4898 4899All new ASL resource descriptors are fully supported by the iASL 4900compiler, 4901the 4902ASL/AML disassembler, and the ACPICA runtime Resource Manager code 4903(including 4904all new predefined resource tags). New descriptors are: 4905 4906 FixedDma 4907 GpioIo 4908 GpioInt 4909 I2cSerialBus 4910 SpiSerialBus 4911 UartSerialBus 4912 4913ASL/AML Operators, New and Modified: 4914------------------------------------ 4915 4916One new operator is added, the Connection operator, which is used to 4917associate 4918a GeneralPurposeIo or GenericSerialBus resource descriptor with 4919individual 4920field objects within an operation region. Several new protocols are 4921associated 4922with the AccessAs operator. All are fully supported by the iASL compiler, 4923disassembler, and runtime ACPICA AML interpreter: 4924 4925 Connection // Declare Field Connection 4926attributes 4927 AccessAs: AttribBytes (n) // Read/Write N-Bytes Protocol 4928 AccessAs: AttribRawBytes (n) // Raw Read/Write N-Bytes 4929Protocol 4930 AccessAs: AttribRawProcessBytes (n) // Raw Process Call Protocol 4931 RawDataBuffer // Data type for Vendor Data 4932fields 4933 4934Predefined ASL/AML Objects: 4935--------------------------- 4936 4937All new predefined objects/control-methods are supported by the iASL 4938compiler 4939and the ACPICA runtime validation/repair (arguments and return values.) 4940New 4941predefined names include the following: 4942 4943Standard 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 4948Resource Tags (Names used to access individual fields within resource 4949descriptors): 4950 _DBT, _DPL, _DRS, _END, _FLC, 4951 _IOR, _LIN, _MOD, _PAR, _PHA, 4952 _PIN, _PPI, _POL, _RXL, _SLV, 4953 _SPE, _STB, _TXL, _VEN. 4954 4955ACPICA External Interfaces: 4956--------------------------- 4957 4958Several new interfaces have been defined for use by ACPI-related device 4959drivers and other host OS services: 4960 4961AcpiAcquireMutex and AcpiReleaseMutex: These interfaces allow the host OS 4962to 4963acquire and release AML mutexes that are defined in the DSDT/SSDT tables 4964provided by the BIOS. They are intended to be used in conjunction with 4965the 4966ACPI 5.0 _DLM (Device Lock Method) in order to provide transaction-level 4967mutual exclusion with the AML code/interpreter. 4968 4969AcpiGetEventResources: Returns the (formatted) resource descriptors as 4970defined 4971by the ACPI 5.0 _AEI object (ACPI Event Information). This object 4972provides 4973resource descriptors associated with hardware-reduced platform events, 4974similar 4975to the AcpiGetCurrentResources interface. 4976 4977Operation Region Handlers: For General Purpose IO and Generic Serial Bus 4978operation regions, information about the Connection() object and any 4979optional 4980length information is passed to the region handler within the Context 4981parameter. 4982 4983AcpiBufferToResource: This interface converts a raw AML buffer containing 4984a 4985resource template or resource descriptor to the ACPI_RESOURCE internal 4986format 4987suitable for use by device drivers. Can be used by an operation region 4988handler 4989to convert the Connection() buffer object into a ACPI_RESOURCE. 4990 4991Miscellaneous/Tools/TestSuites: 4992------------------------------- 4993 4994Support for extended _HID names (Four alpha characters instead of three). 4995Support for ACPI 5.0 features in the AcpiExec and AcpiHelp utilities. 4996Support for ACPI 5.0 features in the ASLTS test suite. 4997Fully updated documentation (ACPICA and iASL reference documents.) 4998 4999ACPI Table Definition Language: 5000------------------------------- 5001 5002Support for this language was implemented and released as a subsystem of 5003the 5004iASL compiler in 2010. (See the iASL compiler User Guide.) 5005 5006 5007Non-ACPI 5.0 changes for this release: 5008-------------------------------------- 5009 50101) ACPICA Core Subsystem: 5011 5012Fix a problem with operation region declarations where a failure can 5013occur 5014if 5015the region name and an argument that evaluates to an object (such as the 5016region address) are in different namespace scopes. Lin Ming, ACPICA BZ 5017937. 5018 5019Do not abort an ACPI table load if an invalid space ID is found within. 5020This 5021will be caught later if the offending method is executed. ACPICA BZ 925. 5022 5023Fixed an issue with the FFixedHW space ID where the ID was not always 5024recognized properly (Both ACPICA and iASL). ACPICA BZ 926. 5025 5026Fixed a problem with the 32-bit generation of the unix-specific OSL 5027(osunixxf.c). Lin Ming, ACPICA BZ 936. 5028 5029Several changes made to enable generation with the GCC 4.6 compiler. 5030ACPICA BZ 5031935. 5032 5033New error messages: Unsupported I/O requests (not 8/16/32 bit), and 5034Index/Bank 5035field registers out-of-range. 5036 50372) iASL Compiler/Disassembler and Tools: 5038 5039iASL: Implemented the __PATH__ operator, which returns the full pathname 5040of 5041the current source file. 5042 5043AcpiHelp: Automatically display expanded keyword information for all ASL 5044operators. 5045 5046Debugger: Add "Template" command to disassemble/dump resource template 5047buffers. 5048 5049Added a new master script to generate and execute the ASLTS test suite. 5050Automatically handles 32- and 64-bit generation. See tests/aslts.sh 5051 5052iASL: Fix problem with listing generation during processing of the 5053Switch() 5054operator where AML listing was disabled until the entire Switch block was 5055completed. 5056 5057iASL: Improve support for semicolon statement terminators. Fix "invalid 5058character" message for some cases when the semicolon is used. Semicolons 5059are 5060now allowed after every <Term> grammar element. ACPICA BZ 927. 5061 5062iASL: Fixed some possible aliasing warnings during generation. ACPICA BZ 5063923. 5064 5065Disassembler: Fix problem with disassembly of the DataTableRegion 5066operator 5067where an inadvertent "Unhandled deferred opcode" message could be 5068generated. 5069 50703) Example Code and Data Size 5071 5072These are the sizes for the OS-independent acpica.lib produced by the 5073Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code 5074includes the debug output trace mechanism and has a much larger code and 5075data 5076size. 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---------------------------------------- 508622 September 2011. Summary of changes for version 20110922: 5087 50880) ACPI 5.0 News: 5089 5090Support for ACPI 5.0 in ACPICA has been underway for several months and 5091will 5092be released at the same time that ACPI 5.0 is officially released. 5093 5094The ACPI 5.0 specification is on track for release in the next few 5095months. 5096 50971) ACPICA Core Subsystem: 5098 5099Fixed a problem where the maximum sleep time for the Sleep() operator was 5100intended to be limited to two seconds, but was inadvertently limited to 510120 5102seconds instead. 5103 5104Linux and Unix makefiles: Added header file dependencies to ensure 5105correct 5106generation of ACPICA core code and utilities. Also simplified the 5107makefiles 5108considerably through the use of the vpath variable to specify search 5109paths. 5110ACPICA BZ 924. 5111 51122) iASL Compiler/Disassembler and Tools: 5113 5114iASL: Implemented support to check the access length for all fields 5115created to 5116access named Resource Descriptor fields. For example, if a resource field 5117is 5118defined to be two bits, a warning is issued if a CreateXxxxField() is 5119used 5120with an incorrect bit length. This is implemented for all current 5121resource 5122descriptor names. ACPICA BZ 930. 5123 5124Disassembler: Fixed a byte ordering problem with the output of 24-bit and 512556- 5126bit integers. 5127 5128iASL: Fixed a couple of issues associated with variable-length package 5129objects. 1) properly handle constants like One, Ones, Zero -- do not make 5130a 5131VAR_PACKAGE when these are used as a package length. 2) Allow the 5132VAR_PACKAGE 5133opcode (in addition to PACKAGE) when validating object types for 5134predefined 5135names. 5136 5137iASL: Emit statistics for all output files (instead of just the ASL input 5138and 5139AML output). Includes listings, hex files, etc. 5140 5141iASL: Added -G option to the table compiler to allow the compilation of 5142custom 5143ACPI tables. The only part of a table that is required is the standard 514436- 5145byte 5146ACPI header. 5147 5148AcpiXtract: Ported to the standard ACPICA environment (with ACPICA 5149headers), 5150which also adds correct 64-bit support. Also, now all output filenames 5151are 5152completely lower case. 5153 5154AcpiExec: Ignore any non-AML tables (tables other than DSDT or SSDT) when 5155loading table files. A warning is issued for any such tables. The only 5156exception is an FADT. This also fixes a possible fault when attempting to 5157load 5158non-AML tables. ACPICA BZ 932. 5159 5160AcpiHelp: Added the AccessAs and Offset operators. Fixed a problem where 5161a 5162missing table terminator could cause a fault when using the -p option. 5163 5164AcpiSrc: Fixed a possible divide-by-zero fault when generating file 5165statistics. 5166 51673) Example Code and Data Size 5168 5169These are the sizes for the OS-independent acpica.lib produced by the 5170Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code 5171includes the debug output trace mechanism and has a much larger code and 5172data 5173size. 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---------------------------------------- 518423 June 2011. Summary of changes for version 20110623: 5185 51861) ACPI CA Core Subsystem: 5187 5188Updated the predefined name repair mechanism to not attempt repair of a 5189_TSS 5190return object if a _PSS object is present. We can only sort the _TSS 5191return 5192package if there is no _PSS within the same scope. This is because if 5193_PSS 5194is 5195present, the ACPI specification dictates that the _TSS Power Dissipation 5196field 5197is to be ignored, and therefore some BIOSs leave garbage values in the 5198_TSS 5199Power field(s). In this case, it is best to just return the _TSS package 5200as- 5201is. Reported by, and fixed with assistance from Fenghua Yu. 5202 5203Added an option to globally disable the control method return value 5204validation 5205and repair. This runtime option can be used to disable return value 5206repair 5207if 5208this is causing a problem on a particular machine. Also added an option 5209to 5210AcpiExec (-dr) to set this disable flag. 5211 5212All makefiles and project files: Major changes to improve generation of 5213ACPICA 5214tools. 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 5221Linux-specific header: update handling of THREAD_ID and pthread. For the 522232- 5223bit case, improve casting to eliminate possible warnings, especially with 5224the 5225acpica tools. 5226 5227Example Code and Data Size: These are the sizes for the OS-independent 5228acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 5229debug 5230version of the code includes the debug output trace mechanism and has a 5231much 5232larger 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 52412) iASL Compiler/Disassembler and Tools: 5242 5243With this release, a new utility named "acpihelp" has been added to the 5244ACPICA 5245package. This utility summarizes the ACPI specification chapters for the 5246ASL 5247and AML languages. It generates under Linux/Unix as well as Windows, and 5248provides 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 5254grammar. 5255 Decode/display AML opcode -- with opcode name, arguments, and 5256grammar. 5257 5258Service Layers: Make multi-thread support configurable. Conditionally 5259compile 5260the multi-thread support so that threading libraries will not be linked 5261if 5262not 5263necessary. The only tool that requires multi-thread support is AcpiExec. 5264 5265iASL: Update yyerrror/AslCompilerError for "const" errors. Newer versions 5266of 5267Bison appear to want the interface to yyerror to be a const char * (or at 5268least this is a problem when generating iASL on some systems.) ACPICA BZ 5269923 5270Pierre Lejeune. 5271 5272Tools: Fix for systems where O_BINARY is not defined. Only used for 5273Windows 5274versions of the tools. 5275 5276---------------------------------------- 527727 May 2011. Summary of changes for version 20110527: 5278 52791) ACPI CA Core Subsystem: 5280 5281ASL Load() operator: Reinstate most restrictions on the incoming ACPI 5282table 5283signature. 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 5294Added the missing _TDL predefined name to the global name list in order 5295to 5296enable validation. Affects both the core ACPICA code and the iASL 5297compiler. 5298 5299Example Code and Data Size: These are the sizes for the OS-independent 5300acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 5301debug 5302version of the code includes the debug output trace mechanism and has a 5303much 5304larger 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 53132) iASL Compiler/Disassembler and Tools: 5314 5315Debugger/AcpiExec: Implemented support for "complex" method arguments on 5316the 5317debugger command line. This adds support beyond simple integers -- 5318including 5319Strings, Buffers, and Packages. Includes support for nested packages. 5320Increased the default command line buffer size to accommodate these 5321arguments. 5322See the ACPICA reference for details and syntax. ACPICA BZ 917. 5323 5324Debugger/AcpiExec: Implemented support for "default" method arguments for 5325the 5326Execute/Debug command. Now, the debugger will always invoke a control 5327method 5328with the required number of arguments -- even if the command line 5329specifies 5330none or insufficient arguments. It uses default integer values for any 5331missing 5332arguments. Also fixes a bug where only six method arguments maximum were 5333supported instead of the required seven. 5334 5335Debugger/AcpiExec: Add a maximum buffer length parameter to AcpiOsGetLine 5336and 5337also return status in order to prevent buffer overruns. See the ACPICA 5338reference for details and syntax. ACPICA BZ 921 5339 5340iASL: Cleaned up support for Berkeley yacc. A general cleanup of code and 5341makefiles to simplify support for the two different but similar parser 5342generators, bison and yacc. 5343 5344Updated the generic unix makefile for gcc 4. The default gcc version is 5345now 5346expected to be 4 or greater, since options specific to gcc 4 are used. 5347 5348---------------------------------------- 534913 April 2011. Summary of changes for version 20110413: 5350 53511) ACPI CA Core Subsystem: 5352 5353Implemented support to execute a so-called "orphan" _REG method under the 5354EC 5355device. This change will force the execution of a _REG method underneath 5356the 5357EC 5358device even if there is no corresponding operation region of type 5359EmbeddedControl. Fixes a problem seen on some machines and apparently is 5360compatible with Windows behavior. ACPICA BZ 875. 5361 5362Added more predefined methods that are eligible for automatic NULL 5363package 5364element removal. This change adds another group of predefined names to 5365the 5366list 5367of names that can be repaired by having NULL package elements dynamically 5368removed. This group are those methods that return a single variable- 5369length 5370package containing simple data types such as integers, buffers, strings. 5371This 5372includes: _ALx, _BCL, _CID,_ DOD, _EDL, _FIX, _PCL, _PLD, _PMD, _PRx, 5373_PSL, 5374_Sx, 5375and _TZD. ACPICA BZ 914. 5376 5377Split and segregated all internal global lock functions to a new file, 5378evglock.c. 5379 5380Updated internal address SpaceID for DataTable regions. Moved this 5381internal 5382space 5383id in preparation for ACPI 5.0 changes that will include some new space 5384IDs. 5385This 5386change should not affect user/host code. 5387 5388Example Code and Data Size: These are the sizes for the OS-independent 5389acpica.lib 5390produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug 5391version of 5392the code includes the debug output trace mechanism and has a much larger 5393code 5394and 5395data 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 54042) iASL Compiler/Disassembler and Tools: 5405 5406iASL/DTC: Major update for new grammar features. Allow generic data types 5407in 5408custom ACPI tables. Field names are now optional. Any line can be split 5409to 5410multiple lines using the continuation char (\). Large buffers now use 5411line- 5412continuation character(s) and no colon on the continuation lines. See the 5413grammar 5414update in the iASL compiler reference. ACPI BZ 910,911. Lin Ming, Bob 5415Moore. 5416 5417iASL: Mark ASL "Return()" and the simple "Return" as "Null" return 5418statements. 5419Since the parser stuffs a "zero" as the return value for these statements 5420(due 5421to 5422the underlying AML grammar), they were seen as "return with value" by the 5423iASL 5424semantic checking. They are now seen correctly as "null" return 5425statements. 5426 5427iASL: Check if a_REG declaration has a corresponding Operation Region. 5428Adds a 5429check for each _REG to ensure that there is in fact a corresponding 5430operation 5431region declaration in the same scope. If not, the _REG method is not very 5432useful 5433since it probably won't be executed. ACPICA BZ 915. 5434 5435iASL/DTC: Finish support for expression evaluation. Added a new 5436expression 5437parser 5438that implements c-style operator precedence and parenthesization. ACPICA 5439bugzilla 5440908. 5441 5442Disassembler/DTC: Remove support for () and <> style comments in data 5443tables. 5444Now 5445that DTC has full expression support, we don't want to have comment 5446strings 5447that 5448start with a parentheses or a less-than symbol. Now, only the standard /* 5449and 5450// 5451comments are supported, as well as the bracket [] comments. 5452 5453AcpiXtract: Fix for RSDP and dynamic SSDT extraction. These tables have 5454"unusual" 5455headers in the acpidump file. Update the header validation to support 5456these 5457tables. Problem introduced in previous AcpiXtract version in the change 5458to 5459support "wrong checksum" error messages emitted by acpidump utility. 5460 5461iASL: Add a * option to generate all template files (as a synonym for 5462ALL) 5463as 5464in 5465"iasl -T *" or "iasl -T ALL". 5466 5467iASL/DTC: Do not abort compiler on fatal errors. We do not want to 5468completely 5469abort the compiler on "fatal" errors, simply should abort the current 5470compile. 5471This allows multiple compiles with a single (possibly wildcard) compiler 5472invocation. 5473 5474---------------------------------------- 547516 March 2011. Summary of changes for version 20110316: 5476 54771) ACPI CA Core Subsystem: 5478 5479Fixed a problem caused by a _PRW method appearing at the namespace root 5480scope 5481during the setup of wake GPEs. A fault could occur if a _PRW directly 5482under 5483the 5484root object was passed to the AcpiSetupGpeForWake interface. Lin Ming. 5485 5486Implemented support for "spurious" Global Lock interrupts. On some 5487systems, a 5488global lock interrupt can occur without the pending flag being set. Upon 5489a 5490GL 5491interrupt, we now ensure that a thread is actually waiting for the lock 5492before 5493signaling GL availability. Rafael Wysocki, Bob Moore. 5494 5495Example Code and Data Size: These are the sizes for the OS-independent 5496acpica.lib 5497produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug 5498version of 5499the code includes the debug output trace mechanism and has a much larger 5500code 5501and 5502data 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 55112) iASL Compiler/Disassembler and Tools: 5512 5513Implemented full support for the "SLIC" ACPI table. Includes support in 5514the 5515header files, disassembler, table compiler, and template generator. Bob 5516Moore, 5517Lin Ming. 5518 5519AcpiXtract: Correctly handle embedded comments and messages from 5520AcpiDump. 5521Apparently some or all versions of acpidump will occasionally emit a 5522comment 5523like 5524"Wrong checksum", etc., into the dump file. This was causing problems for 5525AcpiXtract. ACPICA BZ 905. 5526 5527iASL: Fix the Linux makefile by removing an inadvertent double file 5528inclusion. 5529ACPICA BZ 913. 5530 5531AcpiExec: Update installation of operation region handlers. Install one 5532handler 5533for a user-defined address space. This is used by the ASL test suite 5534(ASLTS). 5535 5536---------------------------------------- 553711 February 2011. Summary of changes for version 20110211: 5538 55391) ACPI CA Core Subsystem: 5540 5541Added a mechanism to defer _REG methods for some early-installed 5542handlers. 5543Most user handlers should be installed before call to 5544AcpiEnableSubsystem. 5545However, Event handlers and region handlers should be installed after 5546AcpiInitializeObjects. Override handlers for the "default" regions should 5547be 5548installed early, however. This change executes all _REG methods for the 5549default regions (Memory/IO/PCI/DataTable) simultaneously to prevent any 5550chicken/egg issues between them. ACPICA BZ 848. 5551 5552Implemented an optimization for GPE detection. This optimization will 5553simply 5554ignore GPE registers that contain no enabled GPEs -- there is no need to 5555read the register since this information is available internally. This 5556becomes more important on machines with a large GPE space. ACPICA 5557bugzilla 5558884. Lin Ming. Suggestion from Joe Liu. 5559 5560Removed all use of the highly unreliable FADT revision field. The 5561revision 5562number in the FADT has been found to be completely unreliable and cannot 5563be 5564trusted. Only the actual table length can be used to infer the version. 5565This 5566change updates the ACPICA core and the disassembler so that both no 5567longer 5568even look at the FADT version and instead depend solely upon the FADT 5569length. 5570 5571Fix an unresolved name issue for the no-debug and no-error-message source 5572generation cases. The _AcpiModuleName was left undefined in these cases, 5573but 5574it is actually needed as a parameter to some interfaces. Define 5575_AcpiModuleName as a null string in these cases. ACPICA Bugzilla 888. 5576 5577Split 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 5584Example Code and Data Size: These are the sizes for the OS-independent 5585acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 5586debug version of the code includes the debug output trace mechanism and 5587has 5588a 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 55972) iASL Compiler/Disassembler and Tools: 5598 5599iASL: Implemented the predefined macros __LINE__, __FILE__, and __DATE__. 5600These are useful C-style macros with the standard definitions. ACPICA 5601bugzilla 898. 5602 5603iASL/DTC: Added support for integer expressions and labels. Support for 5604full 5605expressions for all integer fields in all ACPI tables. Support for labels 5606in 5607"generic" portions of tables such as UEFI. See the iASL reference manual. 5608 5609Debugger: Added a command to display the status of global handlers. The 5610"handlers" command will display op region, fixed event, and miscellaneous 5611global handlers. installation status -- and for op regions, whether 5612default 5613or user-installed handler will be used. 5614 5615iASL: Warn if reserved method incorrectly returns a value. Many 5616predefined 5617names are defined such that they do not return a value. If implemented as 5618a 5619method, issue a warning if such a name explicitly returns a value. ACPICA 5620Bugzilla 855. 5621 5622iASL: Added detection of GPE method name conflicts. Detects a conflict 5623where 5624there are two GPE methods of the form _Lxy and _Exy in the same scope. 5625(For 5626example, _L1D and _E1D in the same scope.) ACPICA bugzilla 848. 5627 5628iASL/DTC: Fixed a couple input scanner issues with comments and line 5629numbers. Comment remover could get confused and miss a comment ending. 5630Fixed 5631a problem with line counter maintenance. 5632 5633iASL/DTC: Reduced the severity of some errors from fatal to error. There 5634is 5635no need to abort on simple errors within a field definition. 5636 5637Debugger: Simplified the output of the help command. All help output now 5638in 5639a single screen, instead of help subcommands. ACPICA Bugzilla 897. 5640 5641---------------------------------------- 564212 January 2011. Summary of changes for version 20110112: 5643 56441) ACPI CA Core Subsystem: 5645 5646Fixed a race condition between method execution and namespace walks that 5647can 5648possibly cause a fault. The problem was apparently introduced in version 564920100528 as a result of a performance optimization that reduces the 5650number 5651of 5652namespace walks upon method exit by using the delete_namespace_subtree 5653function instead of the delete_namespace_by_owner function used 5654previously. 5655Bug is a missing namespace lock in the delete_namespace_subtree function. 5656dana.myers@oracle.com 5657 5658Fixed several issues and a possible fault with the automatic "serialized" 5659method support. History: This support changes a method to "serialized" on 5660the 5661fly if the method generates an AE_ALREADY_EXISTS error, indicating the 5662possibility that it cannot handle reentrancy. This fix repairs a couple 5663of 5664issues 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@oracle.com. 5676 5677Debugger: Now lock the namespace for duration of a namespace dump. 5678Prevents 5679issues if the namespace is changing dynamically underneath the debugger. 5680Especially affects temporary namespace nodes, since the debugger displays 5681these also. 5682 5683Updated the ordering of include files. The ACPICA headers should appear 5684before any compiler-specific headers (stdio.h, etc.) so that acenv.h can 5685set 5686any necessary compiler-specific defines, etc. Affects the ACPI-related 5687tools 5688and utilities. 5689 5690Updated all ACPICA copyrights and signons to 2011. Added the 2011 5691copyright 5692to all module headers and signons, including the Linux header. This 5693affects 5694virtually every file in the ACPICA core subsystem, iASL compiler, and all 5695utilities. 5696 5697Added project files for MS Visual Studio 2008 (VC++ 9.0). The original 5698project files for VC++ 6.0 are now obsolete. New project files can be 5699found 5700under acpica/generate/msvc9. See acpica/generate/msvc9/readme.txt for 5701details. 5702 5703Example Code and Data Size: These are the sizes for the OS-independent 5704acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 5705debug version of the code includes the debug output trace mechanism and 5706has a 5707much 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 57162) iASL Compiler/Disassembler and Tools: 5717 5718iASL: Added generic data types to the Data Table compiler. Add "generic" 5719data 5720types such as UINT32, String, Unicode, etc., to simplify the generation 5721of 5722platform-defined tables such as UEFI. Lin Ming. 5723 5724iASL: Added listing support for the Data Table Compiler. Adds listing 5725support 5726(-l) to display actual binary output for each line of input code. 5727 5728---------------------------------------- 572909 December 2010. Summary of changes for version 20101209: 5730 57311) ACPI CA Core Subsystem: 5732 5733Completed the major overhaul of the GPE support code that was begun in 5734July 57352010. Major features include: removal of _PRW execution in ACPICA (host 5736executes _PRWs anyway), cleanup of "wake" GPE interfaces and processing, 5737changes to existing interfaces, simplification of GPE handler operation, 5738and 5739a 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 5747See the ACPICA Programmer Reference for full details and programming 5748information. See the new section 4.4 "General Purpose Event (GPE) 5749Support" 5750for a full overview, and section 8.7 "ACPI General Purpose Event 5751Management" 5752for programming details. ACPICA BZ 858,870,877. Matthew Garrett, Lin 5753Ming, 5754Bob Moore, Rafael Wysocki. 5755 5756Implemented a new GPE feature for Windows compatibility, the "Implicit 5757Wake 5758GPE Notify". This feature will automatically issue a Notify(2) on a 5759device 5760when a Wake GPE is received if there is no corresponding GPE method or 5761handler. ACPICA BZ 870. 5762 5763Fixed a problem with the Scope() operator during table parse and load 5764phase. 5765During load phase (table load or method execution), the scope operator 5766should 5767not enter the target into the namespace. Instead, it should open a new 5768scope 5769at the target location. Linux BZ 19462, ACPICA BZ 882. 5770 5771Example Code and Data Size: These are the sizes for the OS-independent 5772acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5773debug version of the code includes the debug output trace mechanism and 5774has a 5775much 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 57842) iASL Compiler/Disassembler and Tools: 5785 5786iASL: Relax the alphanumeric restriction on _CID strings. These strings 5787are 5788"bus-specific" per the ACPI specification, and therefore any characters 5789are 5790acceptable. The only checks that can be performed are for a null string 5791and 5792perhaps for a leading asterisk. ACPICA BZ 886. 5793 5794iASL: Fixed a problem where a syntax error that caused a premature EOF 5795condition on the source file emitted a very confusing error message. The 5796premature EOF is now detected correctly. ACPICA BZ 891. 5797 5798Disassembler: Decode the AccessSize within a Generic Address Structure 5799(byte 5800access, word access, etc.) Note, this field does not allow arbitrary bit 5801access, the size is encoded as 1=byte, 2=word, 3=dword, and 4=qword. 5802 5803New: AcpiNames utility - Example namespace dump utility. Shows an example 5804of 5805ACPICA configuration for a minimal namespace dump utility. Uses table and 5806namespace managers, but no AML interpreter. Does not add any 5807functionality 5808over AcpiExec, it is a subset of AcpiExec. The purpose is to show how to 5809partition and configure ACPICA. ACPICA BZ 883. 5810 5811AML Debugger: Increased the debugger buffer size for method return 5812objects. 5813Was 4K, increased to 16K. Also enhanced error messages for debugger 5814method 5815execution, including the buffer overflow case. 5816 5817---------------------------------------- 581813 October 2010. Summary of changes for version 20101013: 5819 58201) ACPI CA Core Subsystem: 5821 5822Added support to clear the PCIEXP_WAKE event. When clearing ACPI events, 5823now 5824clear the PCIEXP_WAKE_STS bit in the ACPI PM1 Status Register, via 5825HwClearAcpiStatus. Original change from Colin King. ACPICA BZ 880. 5826 5827Changed the type of the predefined namespace object _TZ from ThermalZone 5828to 5829Device. This was found to be confusing to the host software that 5830processes 5831the various thermal zones, since _TZ is not really a ThermalZone. 5832However, 5833a 5834Notify() can still be performed on it. ACPICA BZ 876. Suggestion from Rui 5835Zhang. 5836 5837Added Windows Vista SP2 to the list of supported _OSI strings. The actual 5838string is "Windows 2006 SP2". 5839 5840Eliminated duplicate code in AcpiUtExecute* functions. Now that the 5841nsrepair 5842code automatically repairs _HID-related strings, this type of code is no 5843longer needed in Execute_HID, Execute_CID, and Execute_UID. ACPICA BZ 5844878. 5845 5846Example Code and Data Size: These are the sizes for the OS-independent 5847acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5848debug version of the code includes the debug output trace mechanism and 5849has a 5850much 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 58592) iASL Compiler/Disassembler and Tools: 5860 5861iASL: Implemented additional compile-time validation for _HID strings. 5862The 5863non-hex prefix (such as "PNP" or "ACPI") must be uppercase, and the 5864length 5865of 5866the string must be exactly seven or eight characters. For both _HID and 5867_CID 5868strings, all characters must be alphanumeric. ACPICA BZ 874. 5869 5870iASL: Allow certain "null" resource descriptors. Some BIOS code creates 5871descriptors that are mostly or all zeros, with the expectation that they 5872will 5873be filled in at runtime. iASL now allows this as long as there is a 5874"resource 5875tag" (name) associated with the descriptor, which gives the ASL a handle 5876needed to modify the descriptor. ACPICA BZ 873. 5877 5878Added single-thread support to the generic Unix application OSL. 5879Primarily 5880for iASL support, this change removes the use of semaphores in the 5881single- 5882threaded ACPICA tools/applications - increasing performance. The 5883_MULTI_THREADED option was replaced by the (reverse) ACPI_SINGLE_THREADED 5884option. ACPICA BZ 879. 5885 5886AcpiExec: several fixes for the 64-bit version. Adds XSDT support and 5887support 5888for 64-bit DSDT/FACS addresses in the FADT. Lin Ming. 5889 5890iASL: Moved all compiler messages to a new file, aslmessages.h. 5891 5892---------------------------------------- 589315 September 2010. Summary of changes for version 20100915: 5894 58951) ACPI CA Core Subsystem: 5896 5897Removed the AcpiOsDerivePciId OSL interface. The various host 5898implementations 5899of this function were not OS-dependent and are now obsolete and can be 5900removed from all host OSLs. This function has been replaced by 5901AcpiHwDerivePciId, which is now part of the ACPICA core code. 5902AcpiHwDerivePciId has been implemented without recursion. Adds one new 5903module, hwpci.c. ACPICA BZ 857. 5904 5905Implemented a dynamic repair for _HID and _CID strings. The following 5906problems are now repaired at runtime: 1) Remove a leading asterisk in the 5907string, and 2) the entire string is uppercased. Both repairs are in 5908accordance with the ACPI specification and will simplify host driver 5909code. 5910ACPICA BZ 871. 5911 5912The ACPI_THREAD_ID type is no longer configurable, internally it is now 5913always UINT64. This simplifies the ACPICA code, especially any printf 5914output. 5915UINT64 is the only common data type for all thread_id types across all 5916operating systems. It is now up to the host OSL to cast the native 5917thread_id 5918type to UINT64 before returning the value to ACPICA (via 5919AcpiOsGetThreadId). 5920Lin Ming, Bob Moore. 5921 5922Added the ACPI_INLINE type to enhance the ACPICA configuration. The 5923"inline" 5924keyword is not standard across compilers, and this type allows inline to 5925be 5926configured on a per-compiler basis. Lin Ming. 5927 5928Made the system global AcpiGbl_SystemAwakeAndRunning publically 5929available. 5930Added an extern for this boolean in acpixf.h. Some hosts utilize this 5931value 5932during suspend/restore operations. ACPICA BZ 869. 5933 5934All code that implements error/warning messages with the "ACPI:" prefix 5935has 5936been moved to a new module, utxferror.c. 5937 5938The UINT64_OVERLAY was moved to utmath.c, which is the only module where 5939it 5940is used. ACPICA BZ 829. Lin Ming, Bob Moore. 5941 5942Example Code and Data Size: These are the sizes for the OS-independent 5943acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5944debug version of the code includes the debug output trace mechanism and 5945has a 5946much 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 59552) iASL Compiler/Disassembler and Tools: 5956 5957iASL/Disassembler: Write ACPI errors to stderr instead of the output 5958file. 5959This keeps the output files free of random error messages that may 5960originate 5961from within the namespace/interpreter code. Used this opportunity to 5962merge 5963all ACPI:-style messages into a single new module, utxferror.c. ACPICA BZ 5964866. Lin Ming, Bob Moore. 5965 5966Tools: update some printfs for ansi warnings on size_t. Handle width 5967change 5968of size_t on 32-bit versus 64-bit generations. Lin Ming. 5969 5970---------------------------------------- 597106 August 2010. Summary of changes for version 20100806: 5972 59731) ACPI CA Core Subsystem: 5974 5975Designed and implemented a new host interface to the _OSI support code. 5976This 5977will allow the host to dynamically add or remove multiple _OSI strings, 5978as 5979well as install an optional handler that is called for each _OSI 5980invocation. 5981Also added a new AML debugger command, 'osi' to display and modify the 5982global 5983_OSI string table, and test support in the AcpiExec utility. See the 5984ACPICA 5985reference manual for full details. Lin Ming, Bob Moore. ACPICA BZ 836. 5986New Functions: 5987 AcpiInstallInterface - Add an _OSI string. 5988 AcpiRemoveInterface - Delete an _OSI string. 5989 AcpiInstallInterfaceHandler - Install optional _OSI handler. 5990Obsolete Functions: 5991 AcpiOsValidateInterface - no longer used. 5992New Files: 5993 source/components/utilities/utosi.c 5994 5995Re-introduced the support to enable multi-byte transfers for Embedded 5996Controller (EC) operation regions. A reported problem was found to be a 5997bug 5998in the host OS, not in the multi-byte support. Previously, the maximum 5999data 6000size passed to the EC operation region handler was a single byte. There 6001are 6002often EC Fields larger than one byte that need to be transferred, and it 6003is 6004useful for the EC driver to lock these as a single transaction. This 6005change 6006enables single transfers larger than 8 bits. This effectively changes the 6007access to the EC space from ByteAcc to AnyAcc, and will probably require 6008changes to the host OS Embedded Controller driver to enable 16/32/64/256- 6009bit 6010transfers in addition to 8-bit transfers. Alexey Starikovskiy, Lin Ming. 6011 6012Fixed a problem with the prototype for AcpiOsReadPciConfiguration. The 6013prototype in acpiosxf.h had the output value pointer as a (void *). 6014It should be a (UINT64 *). This may affect some host OSL code. 6015 6016Fixed a couple problems with the recently modified Linux makefiles for 6017iASL 6018and AcpiExec. These new makefiles place the generated object files in the 6019local directory so that there can be no collisions between the files that 6020are 6021shared between them that are compiled with different options. 6022 6023Example Code and Data Size: These are the sizes for the OS-independent 6024acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6025debug version of the code includes the debug output trace mechanism and 6026has a 6027much 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 60362) iASL Compiler/Disassembler and Tools: 6037 6038iASL/Disassembler: Added a new option (-da, "disassemble all") to load 6039the 6040namespace from and disassemble an entire group of AML files. Useful for 6041loading all of the AML tables for a given machine (DSDT, SSDT1...SSDTn) 6042and 6043disassembling with one simple command. ACPICA BZ 865. Lin Ming. 6044 6045iASL: Allow multiple invocations of -e option. This change allows 6046multiple 6047uses of -e on the command line: "-e ssdt1.dat -e ssdt2.dat". ACPICA BZ 6048834. 6049Lin Ming. 6050 6051---------------------------------------- 605202 July 2010. Summary of changes for version 20100702: 6053 60541) ACPI CA Core Subsystem: 6055 6056Implemented several updates to the recently added GPE reference count 6057support. The model for "wake" GPEs is changing to give the host OS 6058complete 6059control of these GPEs. Eventually, the ACPICA core will not execute any 6060_PRW 6061methods, since the host already must execute them. Also, additional 6062changes 6063were made to help ensure that the reference counts are kept in proper 6064synchronization with reality. Rafael J. Wysocki. 6065 60661) Ensure that GPEs are not enabled twice during initialization. 60672) Ensure that GPE enable masks stay in sync with the reference count. 60683) Do not inadvertently enable GPEs when writing GPE registers. 60694) Remove the internal wake reference counter and add new AcpiGpeWakeup 6070interface. This interface will set or clear individual GPEs for wakeup. 60715) Remove GpeType argument from AcpiEnable and AcpiDisable. These 6072interfaces 6073are now used for "runtime" GPEs only. 6074 6075Changed the behavior of the GPE install/remove handler interfaces. The 6076GPE 6077is 6078no longer disabled during this process, as it was found to cause problems 6079on 6080some machines. Rafael J. Wysocki. 6081 6082Reverted a change introduced in version 20100528 to enable Embedded 6083Controller multi-byte transfers. This change was found to cause problems 6084with 6085Index Fields and possibly Bank Fields. It will be reintroduced when these 6086problems have been resolved. 6087 6088Fixed a problem with references to Alias objects within Package Objects. 6089A 6090reference to an Alias within the definition of a Package was not always 6091resolved properly. Aliases to objects like Processors, Thermal zones, 6092etc. 6093were resolved to the actual object instead of a reference to the object 6094as 6095it 6096should be. Package objects are only allowed to contain integer, string, 6097buffer, package, and reference objects. Redhat bugzilla 608648. 6098 6099Example Code and Data Size: These are the sizes for the OS-independent 6100acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6101debug version of the code includes the debug output trace mechanism and 6102has a 6103much 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 61122) iASL Compiler/Disassembler and Tools: 6113 6114iASL: Implemented a new compiler subsystem to allow definition and 6115compilation of the non-AML ACPI tables such as FADT, MADT, SRAT, etc. 6116These 6117are called "ACPI Data Tables", and the new compiler is the "Data Table 6118Compiler". This compiler is intended to simplify the existing error-prone 6119process of creating these tables for the BIOS, as well as allowing the 6120disassembly, modification, recompilation, and override of existing ACPI 6121data 6122tables. See the iASL User Guide for detailed information. 6123 6124iASL: Implemented a new Template Generator option in support of the new 6125Data 6126Table Compiler. This option will create examples of all known ACPI tables 6127that can be used as the basis for table development. See the iASL 6128documentation and the -T option. 6129 6130Disassembler and headers: Added support for the WDDT ACPI table (Watchdog 6131Descriptor Table). 6132 6133Updated the Linux makefiles for iASL and AcpiExec to place the generated 6134object files in the local directory so that there can be no collisions 6135between the shared files between them that are generated with different 6136options. 6137 6138Added support for Mac OS X in the Unix OSL used for iASL and AcpiExec. 6139Use 6140the #define __APPLE__ to enable this support. 6141 6142---------------------------------------- 614328 May 2010. Summary of changes for version 20100528: 6144 6145Note: The ACPI 4.0a specification was released on April 5, 2010 and is 6146available at www.acpi.info. This is primarily an errata release. 6147 61481) ACPI CA Core Subsystem: 6149 6150Undefined ACPI tables: We are looking for the definitions for the 6151following 6152ACPI tables that have been seen in the field: ATKG, IEIT, GSCI. 6153 6154Implemented support to enable multi-byte transfers for Embedded 6155Controller 6156(EC) operation regions. Previously, the maximum data size passed to the 6157EC 6158operation region handler was a single byte. There are often EC Fields 6159larger 6160than one byte that need to be transferred, and it is useful for the EC 6161driver 6162to lock these as a single transaction. This change enables single 6163transfers 6164larger than 8 bits. This effectively changes the access to the EC space 6165from 6166ByteAcc to AnyAcc, and will probably require changes to the host OS 6167Embedded 6168Controller driver to enable 16/32/64/256-bit transfers in addition to 8- 6169bit 6170transfers. Alexey Starikovskiy, Lin Ming 6171 6172Implemented a performance enhancement for namespace search and access. 6173This 6174change enhances the performance of namespace searches and walks by adding 6175a 6176backpointer to the parent in each namespace node. On large namespaces, 6177this 6178change can improve overall ACPI performance by up to 9X. Adding a pointer 6179to 6180each namespace node increases the overall size of the internal namespace 6181by 6182about 5%, since each namespace entry usually consists of both a namespace 6183node and an ACPI operand object. However, this is the first growth of the 6184namespace in ten years. ACPICA bugzilla 817. Alexey Starikovskiy. 6185 6186Implemented a performance optimization that reduces the number of 6187namespace 6188walks. On control method exit, only walk the namespace if the method is 6189known 6190to have created namespace objects outside of its local scope. Previously, 6191the 6192entire namespace was traversed on each control method exit. This change 6193can 6194improve overall ACPI performance by up to 3X. Alexey Starikovskiy, Bob 6195Moore. 6196 6197Added support to truncate I/O addresses to 16 bits for Windows 6198compatibility. 6199Some ASL code has been seen in the field that inadvertently has bits set 6200above bit 15. This feature is optional and is enabled if the BIOS 6201requests 6202any Windows OSI strings. It can also be enabled by the host OS. Matthew 6203Garrett, Bob Moore. 6204 6205Added support to limit the maximum time for the ASL Sleep() operator. To 6206prevent accidental deep sleeps, limit the maximum time that Sleep() will 6207actually sleep. Configurable, the default maximum is two seconds. ACPICA 6208bugzilla 854. 6209 6210Added run-time validation support for the _WDG and_WED Microsoft 6211predefined 6212methods. These objects are defined by "Windows Instrumentation", and are 6213not 6214part of the ACPI spec. ACPICA BZ 860. 6215 6216Expanded all statistic counters used during namespace and device 6217initialization from 16 to 32 bits in order to support very large 6218namespaces. 6219 6220Replaced all instances of %d in printf format specifiers with %u since 6221nearly 6222all integers in ACPICA are unsigned. 6223 6224Fixed the exception namestring for AE_WAKE_ONLY_GPE. Was incorrectly 6225returned 6226as AE_NO_HANDLER. 6227 6228Example Code and Data Size: These are the sizes for the OS-independent 6229acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6230debug version of the code includes the debug output trace mechanism and 6231has a 6232much 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 62412) iASL Compiler/Disassembler and Tools: 6242 6243iASL: Added compiler support for the _WDG and_WED Microsoft predefined 6244methods. These objects are defined by "Windows Instrumentation", and are 6245not 6246part of the ACPI spec. ACPICA BZ 860. 6247 6248AcpiExec: added option to disable the memory tracking mechanism. The -dt 6249option will disable the tracking mechanism, which improves performance 6250considerably. 6251 6252AcpiExec: Restructured the command line options into -d (disable) and -e 6253(enable) options. 6254 6255---------------------------------------- 625628 April 2010. Summary of changes for version 20100428: 6257 62581) ACPI CA Core Subsystem: 6259 6260Implemented GPE support for dynamically loaded ACPI tables. For all GPEs, 6261including FADT-based and GPE Block Devices, execute any _PRW methods in 6262the 6263new table, and process any _Lxx/_Exx GPE methods in the new table. Any 6264runtime GPE that is referenced by an _Lxx/_Exx method in the new table is 6265immediately enabled. Handles the FADT-defined GPEs as well as GPE Block 6266Devices. Provides compatibility with other ACPI implementations. Two new 6267files added, evgpeinit.c and evgpeutil.c. ACPICA BZ 833. Lin Ming, Bob 6268Moore. 6269 6270Fixed a regression introduced in version 20100331 within the table 6271manager 6272where initial table loading could fail. This was introduced in the fix 6273for 6274AcpiReallocateRootTable. Also, renamed some of fields in the table 6275manager 6276data structures to clarify their meaning and use. 6277 6278Fixed a possible allocation overrun during internal object copy in 6279AcpiUtCopySimpleObject. The original code did not correctly handle the 6280case 6281where the object to be copied was a namespace node. Lin Ming. ACPICA BZ 6282847. 6283 6284Updated the allocation dump routine, AcpiUtDumpAllocation and fixed a 6285possible access beyond end-of-allocation. Also, now fully validate 6286descriptor 6287(size and type) before output. Lin Ming, Bob Moore. ACPICA BZ 847 6288 6289Example Code and Data Size: These are the sizes for the OS-independent 6290acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6291debug version of the code includes the debug output trace mechanism and 6292has a 6293much 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 63022) iASL Compiler/Disassembler and Tools: 6303 6304iASL: Implemented Min/Max/Len/Gran validation for address resource 6305descriptors. This change implements validation for the address fields 6306that 6307are common to all address-type resource descriptors. These checks are 6308implemented: Checks for valid Min/Max, length within the Min/Max window, 6309valid granularity, Min/Max a multiple of granularity, and _MIF/_MAF as 6310per 6311table 6-40 in the ACPI 4.0a specification. Also split the large 6312aslrestype1.c 6313and aslrestype2.c files into five new files. ACPICA BZ 840. 6314 6315iASL: Added support for the _Wxx predefined names. This support was 6316missing 6317and these names were not recognized by the compiler as valid predefined 6318names. ACPICA BZ 851. 6319 6320iASL: Added an error for all predefined names that are defined to return 6321no 6322value and thus must be implemented as Control Methods. These include all 6323of 6324the _Lxx, _Exx, _Wxx, and _Qxx names, as well as some other miscellaneous 6325names such as _DIS, _INI, _IRC, _OFF, _ON, and _PSx. ACPICA BZ 850, 856. 6326 6327iASL: Implemented the -ts option to emit hex AML data in ASL format, as 6328an 6329ASL Buffer. Allows ACPI tables to be easily included within ASL files, to 6330be 6331dynamically loaded via the Load() operator. Also cleaned up output for 6332the 6333- 6334ta and -tc options. ACPICA BZ 853. 6335 6336Tests: Added a new file with examples of extended iASL error checking. 6337Demonstrates the advanced error checking ability of the iASL compiler. 6338Available at tests/misc/badcode.asl. 6339 6340---------------------------------------- 634131 March 2010. Summary of changes for version 20100331: 6342 63431) ACPI CA Core Subsystem: 6344 6345Completed a major update for the GPE support in order to improve support 6346for 6347shared GPEs and to simplify both host OS and ACPICA code. Added a 6348reference 6349count mechanism to support shared GPEs that require multiple device 6350drivers. 6351Several external interfaces have changed. One external interface has been 6352removed. One new external interface was added. Most of the GPE external 6353interfaces now use the GPE spinlock instead of the events mutex (and the 6354Flags parameter for many GPE interfaces has been removed.) See the 6355updated 6356ACPICA Programmer Reference for details. Matthew Garrett, Bob Moore, 6357Rafael 6358Wysocki. ACPICA BZ 831. 6359 6360Changed: 6361 AcpiEnableGpe, AcpiDisableGpe, AcpiClearGpe, AcpiGetGpeStatus 6362Removed: 6363 AcpiSetGpeType 6364New: 6365 AcpiSetGpe 6366 6367Implemented write support for DataTable operation regions. These regions 6368are 6369defined via the DataTableRegion() operator. Previously, only read support 6370was 6371implemented. The ACPI specification allows DataTableRegions to be 6372read/write, 6373however. 6374 6375Implemented a new subsystem option to force a copy of the DSDT to local 6376memory. Optionally copy the entire DSDT to local memory (instead of 6377simply 6378mapping it.) There are some (albeit very rare) BIOSs that corrupt or 6379replace 6380the original DSDT, creating the need for this option. Default is FALSE, 6381do 6382not copy the DSDT. 6383 6384Implemented detection of a corrupted or replaced DSDT. This change adds 6385support to detect a DSDT that has been corrupted and/or replaced from 6386outside 6387the OS (by firmware). This is typically catastrophic for the system, but 6388has 6389been seen on some machines. Once this problem has been detected, the DSDT 6390copy option can be enabled via system configuration. Lin Ming, Bob Moore. 6391 6392Fixed two problems with AcpiReallocateRootTable during the root table 6393copy. 6394When copying the root table to the new allocation, the length used was 6395incorrect. The new size was used instead of the current table size, 6396meaning 6397too much data was copied. Also, the count of available slots for ACPI 6398tables 6399was not set correctly. Alexey Starikovskiy, Bob Moore. 6400 6401Example Code and Data Size: These are the sizes for the OS-independent 6402acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6403debug version of the code includes the debug output trace mechanism and 6404has a 6405much 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 64142) iASL Compiler/Disassembler and Tools: 6415 6416iASL: Implement limited typechecking for values returned from predefined 6417control methods. The type of any returned static (unnamed) object is now 6418validated. For example, Return(1). ACPICA BZ 786. 6419 6420iASL: Fixed a predefined name object verification regression. Fixes a 6421problem 6422introduced in version 20100304. An error is incorrectly generated if a 6423predefined name is declared as a static named object with a value defined 6424using the keywords "Zero", "One", or "Ones". Lin Ming. 6425 6426iASL: Added Windows 7 support for the -g option (get local ACPI tables) 6427by 6428reducing the requested registry access rights. ACPICA BZ 842. 6429 6430Disassembler: fixed a possible fault when generating External() 6431statements. 6432Introduced in commit ae7d6fd: Properly handle externals with parent- 6433prefix 6434(carat). Fixes a string length allocation calculation. Lin Ming. 6435 6436---------------------------------------- 643704 March 2010. Summary of changes for version 20100304: 6438 64391) ACPI CA Core Subsystem: 6440 6441Fixed a possible problem with the AML Mutex handling function 6442AcpiExReleaseMutex where the function could fault under the very rare 6443condition when the interpreter has blocked, the interpreter lock is 6444released, 6445the interpreter is then reentered via the same thread, and attempts to 6446acquire an AML mutex that was previously acquired. FreeBSD report 140979. 6447Lin 6448Ming. 6449 6450Implemented additional configuration support for the AML "Debug Object". 6451Output from the debug object can now be enabled via a global variable, 6452AcpiGbl_EnableAmlDebugObject. This will assist with remote machine 6453debugging. 6454This debug output is now available in the release version of ACPICA 6455instead 6456of just the debug version. Also, the entire debug output module can now 6457be 6458configured out of the ACPICA build if desired. One new file added, 6459executer/exdebug.c. Lin Ming, Bob Moore. 6460 6461Added header support for the ACPI MCHI table (Management Controller Host 6462Interface Table). This table was added in ACPI 4.0, but the defining 6463document 6464has only recently become available. 6465 6466Standardized output of integer values for ACPICA warnings/errors. Always 6467use 64680x prefix for hex output, always use %u for unsigned integer decimal 6469output. 6470Affects ACPI_INFO, ACPI_ERROR, ACPI_EXCEPTION, and ACPI_WARNING (about 6471400 6472invocations.) These invocations were converted from the original 6473ACPI_DEBUG_PRINT invocations and were not consistent. ACPICA BZ 835. 6474 6475Example Code and Data Size: These are the sizes for the OS-independent 6476acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6477debug version of the code includes the debug output trace mechanism and 6478has a 6479much 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 64882) iASL Compiler/Disassembler and Tools: 6489 6490iASL: Implemented typechecking support for static (non-control method) 6491predefined named objects that are declared with the Name() operator. For 6492example, the type of this object is now validated to be of type Integer: 6493Name(_BBN, 1). This change migrates the compiler to using the core 6494predefined 6495name table instead of maintaining a local version. Added a new file, 6496aslpredef.c. ACPICA BZ 832. 6497 6498Disassembler: Added support for the ACPI 4.0 MCHI table. 6499 6500---------------------------------------- 650121 January 2010. Summary of changes for version 20100121: 6502 65031) ACPI CA Core Subsystem: 6504 6505Added the 2010 copyright to all module headers and signons. This affects 6506virtually every file in the ACPICA core subsystem, the iASL compiler, the 6507tools/utilities, and the test suites. 6508 6509Implemented a change to the AcpiGetDevices interface to eliminate 6510unnecessary 6511invocations of the _STA method. In the case where a specific _HID is 6512requested, do not run _STA until a _HID match is found. This eliminates 6513potentially dozens of _STA calls during a search for a particular 6514device/HID, 6515which in turn can improve boot times. ACPICA BZ 828. Lin Ming. 6516 6517Implemented an additional repair for predefined method return values. 6518Attempt 6519to repair unexpected NULL elements within returned Package objects. 6520Create 6521an 6522Integer of value zero, a NULL String, or a zero-length Buffer as 6523appropriate. 6524ACPICA BZ 818. Lin Ming, Bob Moore. 6525 6526Removed the obsolete ACPI_INTEGER data type. This type was introduced as 6527the 6528code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0 6529(with 653064-bit AML integers). It is now obsolete and this change removes it from 6531the 6532ACPICA code base, replaced by UINT64. The original typedef has been 6533retained 6534for now for compatibility with existing device driver code. ACPICA BZ 6535824. 6536 6537Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field 6538in 6539the parse tree object. 6540 6541Added additional warning options for the gcc-4 generation. Updated the 6542source 6543accordingly. This includes some code restructuring to eliminate 6544unreachable 6545code, elimination of some gotos, elimination of unused return values, 6546some 6547additional casting, and removal of redundant declarations. 6548 6549Example Code and Data Size: These are the sizes for the OS-independent 6550acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6551debug version of the code includes the debug output trace mechanism and 6552has a 6553much 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 65622) iASL Compiler/Disassembler and Tools: 6563 6564No functional changes for this release. 6565 6566---------------------------------------- 656714 December 2009. Summary of changes for version 20091214: 6568 65691) ACPI CA Core Subsystem: 6570 6571Enhanced automatic data type conversions for predefined name repairs. 6572This 6573change expands the automatic repairs/conversions for predefined name 6574return 6575values to make Integers, Strings, and Buffers fully interchangeable. 6576Also, 6577a 6578Buffer can be converted to a Package of Integers if necessary. The 6579nsrepair.c 6580module was completely restructured. Lin Ming, Bob Moore. 6581 6582Implemented automatic removal of null package elements during predefined 6583name 6584repairs. This change will automatically remove embedded and trailing NULL 6585package elements from returned package objects that are defined to 6586contain 6587a 6588variable number of sub-packages. The driver is then presented with a 6589package 6590with no null elements to deal with. ACPICA BZ 819. 6591 6592Implemented a repair for the predefined _FDE and _GTM names. The expected 6593return value for both names is a Buffer of 5 DWORDs. This repair fixes 6594two 6595possible problems (both seen in the field), where a package of integers 6596is 6597returned, or a buffer of BYTEs is returned. With assistance from Jung-uk 6598Kim. 6599 6600Implemented additional module-level code support. This change will 6601properly 6602execute module-level code that is not at the root of the namespace (under 6603a 6604Device object, etc.). Now executes the code within the current scope 6605instead 6606of the root. ACPICA BZ 762. Lin Ming. 6607 6608Fixed possible mutex acquisition errors when running _REG methods. Fixes 6609a 6610problem where mutex errors can occur when running a _REG method that is 6611in 6612the same scope as a method-defined operation region or an operation 6613region 6614under a module-level IF block. This type of code is rare, so the problem 6615has 6616not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore. 6617 6618Fixed a possible memory leak during module-level code execution. An 6619object 6620could be leaked for each block of executed module-level code if the 6621interpreter slack mode is enabled This change deletes any implicitly 6622returned 6623object from the module-level code block. Lin Ming. 6624 6625Removed messages for successful predefined repair(s). The repair 6626mechanism 6627was considered too wordy. Now, messages are only unconditionally emitted 6628if 6629the return object cannot be repaired. Existing messages for successful 6630repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ 6631827. 6632 6633Example Code and Data Size: These are the sizes for the OS-independent 6634acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6635debug version of the code includes the debug output trace mechanism and 6636has a 6637much 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 66462) iASL Compiler/Disassembler and Tools: 6647 6648iASL: Fixed a regression introduced in 20091112 where intermediate .SRC 6649files 6650were no longer automatically removed at the termination of the compile. 6651 6652acpiexec: Implemented the -f option to specify default region fill value. 6653This option specifies the value used to initialize buffers that simulate 6654operation regions. Default value is zero. Useful for debugging problems 6655that 6656depend on a specific initial value for a region or field. 6657 6658---------------------------------------- 665912 November 2009. Summary of changes for version 20091112: 6660 66611) ACPI CA Core Subsystem: 6662 6663Implemented a post-order callback to AcpiWalkNamespace. The existing 6664interface only has a pre-order callback. This change adds an additional 6665parameter for a post-order callback which will be more useful for bus 6666scans. 6667ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference. 6668 6669Modified the behavior of the operation region memory mapping cache for 6670SystemMemory. Ensure that the memory mappings created for operation 6671regions 6672do not cross 4K page boundaries. Crossing a page boundary while mapping 6673regions can cause kernel warnings on some hosts if the pages have 6674different 6675attributes. Such regions are probably BIOS bugs, and this is the 6676workaround. 6677Linux BZ 14445. Lin Ming. 6678 6679Implemented an automatic repair for predefined methods that must return 6680sorted 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 6683sorted 6684and do not contain NULL package elements. Adds one new file, 6685namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore. 6686 6687Fixed a possible fault during predefined name validation if a return 6688Package 6689object contains NULL elements. Also adds a warning if a NULL element is 6690followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement 6691may 6692include repair or removal of all such NULL elements where possible. 6693 6694Implemented additional module-level executable AML code support. This 6695change 6696will 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 6698AML 6699code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming. 6700 6701Implemented a new internal function to create Integer objects. This 6702function 6703simplifies miscellaneous object creation code. ACPICA BZ 823. 6704 6705Reduced the severity of predefined repair messages, Warning to Info. 6706Since 6707the object was successfully repaired, a warning is too severe. Reduced to 6708an 6709info message for now. These messages may eventually be changed to debug- 6710only. 6711ACPICA BZ 812. 6712 6713Example Code and Data Size: These are the sizes for the OS-independent 6714acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6715debug version of the code includes the debug output trace mechanism and 6716has a 6717much 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 67262) iASL Compiler/Disassembler and Tools: 6727 6728iASL: Implemented Switch() with While(1) so that Break works correctly. 6729This 6730change correctly implements the Switch operator with a surrounding 6731While(1) 6732so that the Break operator works as expected. ACPICA BZ 461. Lin Ming. 6733 6734iASL: Added a message if a package initializer list is shorter than 6735package 6736length. Adds a new remark for a Package() declaration if an initializer 6737list 6738exists, but is shorter than the declared length of the package. Although 6739technically legal, this is probably a coding error and it is seen in the 6740field. ACPICA BZ 815. Lin Ming, Bob Moore. 6741 6742iASL: Fixed a problem where the compiler could fault after the maximum 6743number 6744of errors was reached (200). 6745 6746acpixtract: Fixed a possible warning for pointer cast if the compiler 6747warning 6748level set very high. 6749 6750---------------------------------------- 675113 October 2009. Summary of changes for version 20091013: 6752 67531) ACPI CA Core Subsystem: 6754 6755Fixed a problem where an Operation Region _REG method could be executed 6756more 6757than once. If a custom address space handler is installed by the host 6758before 6759the "initialize operation regions" phase of the ACPICA initialization, 6760any 6761_REG methods for that address space could be executed twice. This change 6762fixes the problem. ACPICA BZ 427. Lin Ming. 6763 6764Fixed a possible memory leak for the Scope() ASL operator. When the exact 6765invocation of "Scope(\)" is executed (change scope to root), one internal 6766operand object was leaked. Lin Ming. 6767 6768Implemented a run-time repair for the _MAT predefined method. If the _MAT 6769return value is defined as a Field object in the AML, and the field 6770size is less than or equal to the default width of an integer (32 or 677164),_MAT 6772can incorrectly return an Integer instead of a Buffer. ACPICA now 6773automatically repairs this problem. ACPICA BZ 810. 6774 6775Implemented a run-time repair for the _BIF and _BIX predefined methods. 6776The 6777"OEM Information" field is often incorrectly returned as an Integer with 6778value zero if the field is not supported by the platform. This is due to 6779an 6780ambiguity in the ACPI specification. The field should always be a string. 6781ACPICA now automatically repairs this problem by returning a NULL string 6782within the returned Package. ACPICA BZ 807. 6783 6784Example Code and Data Size: These are the sizes for the OS-independent 6785acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6786debug version of the code includes the debug output trace mechanism and 6787has a 6788much 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 67972) iASL Compiler/Disassembler and Tools: 6798 6799Disassembler: Fixed a problem where references to external symbols that 6800contained one or more parent-prefixes (carats) were not handled 6801correctly, 6802possibly causing a fault. ACPICA BZ 806. Lin Ming. 6803 6804Disassembler: Restructured the code so that all functions that handle 6805external symbols are in a single module. One new file is added, 6806common/dmextern.c. 6807 6808AML Debugger: Added a max count argument for the Batch command (which 6809executes multiple predefined methods within the namespace.) 6810 6811iASL: Updated the compiler documentation (User Reference.) Available at 6812http://www.acpica.org/documentation/. ACPICA BZ 750. 6813 6814AcpiXtract: Updated for Lint and other formatting changes. Close all open 6815files. 6816 6817---------------------------------------- 681803 September 2009. Summary of changes for version 20090903: 6819 68201) ACPI CA Core Subsystem: 6821 6822For Windows Vista compatibility, added the automatic execution of an _INI 6823method located at the namespace root (\_INI). This method is executed at 6824table load time. This support is in addition to the automatic execution 6825of 6826\_SB._INI. Lin Ming. 6827 6828Fixed a possible memory leak in the interpreter for AML package objects 6829if 6830the package initializer list is longer than the defined size of the 6831package. 6832This apparently can only happen if the BIOS changes the package size on 6833the 6834fly (seen in a _PSS object), as ASL compilers do not allow this. The 6835interpreter will truncate the package to the defined size (and issue an 6836error 6837message), but previously could leave the extra objects undeleted if they 6838were 6839pre-created during the argument processing (such is the case if the 6840package 6841consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805. 6842 6843Fixed a problem seen when a Buffer or String is stored to itself via ASL. 6844This has been reported in the field. Previously, ACPICA would zero out 6845the 6846buffer/string. Now, the operation is treated as a noop. Provides Windows 6847compatibility. ACPICA BZ 803. Lin Ming. 6848 6849Removed an extraneous error message for ASL constructs of the form 6850Store(LocalX,LocalX) when LocalX is uninitialized. These curious 6851statements 6852are seen in many BIOSs and are once again treated as NOOPs and no error 6853is 6854emitted when they are encountered. ACPICA BZ 785. 6855 6856Fixed an extraneous warning message if a _DSM reserved method returns a 6857Package object. _DSM can return any type of object, so validation on the 6858return type cannot be performed. ACPICA BZ 802. 6859 6860Example Code and Data Size: These are the sizes for the OS-independent 6861acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6862debug version of the code includes the debug output trace mechanism and 6863has a 6864much 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 68732) iASL Compiler/Disassembler and Tools: 6874 6875iASL: Fixed a problem with the use of the Alias operator and Resource 6876Templates. The correct alias is now constructed and no error is emitted. 6877ACPICA BZ 738. 6878 6879iASL: Implemented the -I option to specify additional search directories 6880for 6881include files. Allows multiple additional search paths for include files. 6882Directories are searched in the order specified on the command line 6883(after 6884the local directory is searched.) ACPICA BZ 800. 6885 6886iASL: Fixed a problem where the full pathname for include files was not 6887emitted for warnings/errors. This caused the IDE support to not work 6888properly. ACPICA BZ 765. 6889 6890iASL: Implemented the -@ option to specify a Windows-style response file 6891containing additional command line options. ACPICA BZ 801. 6892 6893AcpiExec: Added support to load multiple AML files simultaneously (such 6894as 6895a 6896DSDT and multiple SSDTs). Also added support for wildcards within the AML 6897pathname. These features allow all machine tables to be easily loaded and 6898debugged together. ACPICA BZ 804. 6899 6900Disassembler: Added missing support for disassembly of HEST table Error 6901Bank 6902subtables. 6903 6904---------------------------------------- 690530 July 2009. Summary of changes for version 20090730: 6906 6907The ACPI 4.0 implementation for ACPICA is complete with this release. 6908 69091) ACPI CA Core Subsystem: 6910 6911ACPI 4.0: Added header file support for all new and changed ACPI tables. 6912Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are 6913new 6914for ACPI 4.0, but have previously been supported in ACPICA are: CPEP, 6915BERT, 6916EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT. 6917There 6918have been some ACPI 4.0 changes to other existing tables. Split the large 6919actbl1.h header into the existing actbl2.h header. ACPICA BZ 774. 6920 6921ACPI 4.0: Implemented predefined name validation for all new names. There 6922are 692331 new names in ACPI 4.0. The predefined validation module was split into 6924two 6925files. The new file is namespace/nsrepair.c. ACPICA BZ 770. 6926 6927Implemented support for so-called "module-level executable code". This is 6928executable AML code that exists outside of any control method and is 6929intended 6930to be executed at table load time. Although illegal since ACPI 2.0, this 6931type 6932of code still exists and is apparently still being created. Blocks of 6933this 6934code are now detected and executed as intended. Currently, the code 6935blocks 6936must exist under either an If, Else, or While construct; these are the 6937typical cases seen in the field. ACPICA BZ 762. Lin Ming. 6938 6939Implemented an automatic dynamic repair for predefined names that return 6940nested Package objects. This applies to predefined names that are defined 6941to 6942return a variable-length Package of sub-packages. If the number of sub- 6943packages is one, BIOS code is occasionally seen that creates a simple 6944single 6945package with no sub-packages. This code attempts to fix the problem by 6946wrapping a new package object around the existing package. These methods 6947can 6948be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA 6949BZ 6950790. 6951 6952Fixed a regression introduced in 20090625 for the AcpiGetDevices 6953interface. 6954The _HID/_CID matching was broken and no longer matched IDs correctly. 6955ACPICA 6956BZ 793. 6957 6958Fixed a problem with AcpiReset where the reset would silently fail if the 6959register was one of the protected I/O ports. AcpiReset now bypasses the 6960port 6961validation mechanism. This may eventually be driven into the 6962AcpiRead/Write 6963interfaces. 6964 6965Fixed a regression related to the recent update of the AcpiRead/Write 6966interfaces. A sleep/suspend could fail if the optional PM2 Control 6967register 6968does 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 6970the 6971code may in fact be obsolete at this date.) ACPICA BZ 799. 6972 6973Fixed a problem where AcpiTerminate could fault if inadvertently called 6974twice 6975in succession. ACPICA BZ 795. 6976 6977Example Code and Data Size: These are the sizes for the OS-independent 6978acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6979debug version of the code includes the debug output trace mechanism and 6980has a 6981much 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 69902) iASL Compiler/Disassembler and Tools: 6991 6992ACPI 4.0: Implemented disassembler support for all new ACPI tables and 6993changes to existing tables. ACPICA BZ 775. 6994 6995---------------------------------------- 699625 June 2009. Summary of changes for version 20090625: 6997 6998The ACPI 4.0 Specification was released on June 16 and is available at 6999www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will 7000continue for the next few releases. 7001 70021) ACPI CA Core Subsystem: 7003 7004ACPI 4.0: Implemented interpreter support for the IPMI operation region 7005address space. Includes support for bi-directional data buffers and an 7006IPMI 7007address space handler (to be installed by an IPMI device driver.) ACPICA 7008BZ 7009773. Lin Ming. 7010 7011ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT. 7012Includes 7013support in both the header files and the disassembler. 7014 7015Completed a major update for the AcpiGetObjectInfo external interface. 7016Changes 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, 7019etc.) 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. 7023These changes will require an update to all callers of this interface. 7024See 7025the updated ACPICA Programmer Reference for details. One new source file 7026has 7027been added - utilities/utids.c. ACPICA BZ 368, 780. 7028 7029Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit 7030transfers. The Value parameter has been extended from 32 bits to 64 bits 7031in 7032order to support new ACPI 4.0 tables. These changes will require an 7033update 7034to 7035all callers of these interfaces. See the ACPICA Programmer Reference for 7036details. ACPICA BZ 768. 7037 7038Fixed several problems with AcpiAttachData. The handler was not invoked 7039when 7040the host node was deleted. The data sub-object was not automatically 7041deleted 7042when the host node was deleted. The interface to the handler had an 7043unused 7044parameter, this was removed. ACPICA BZ 778. 7045 7046Enhanced the function that dumps ACPI table headers. All non-printable 7047characters in the string fields are now replaced with '?' (Signature, 7048OemId, 7049OemTableId, and CompilerId.) ACPI tables with non-printable characters in 7050these fields are occasionally seen in the field. ACPICA BZ 788. 7051 7052Fixed a problem with predefined method repair code where the code that 7053attempts to repair/convert an object of incorrect type is only executed 7054on 7055the first time the predefined method is called. The mechanism that 7056disables 7057warnings on subsequent calls was interfering with the repair mechanism. 7058ACPICA BZ 781. 7059 7060Fixed a possible memory leak in the predefined validation/repair code 7061when 7062a 7063buffer is automatically converted to an expected string object. 7064 7065Removed obsolete 16-bit files from the distribution and from the current 7066git 7067tree head. ACPICA BZ 776. 7068 7069Example Code and Data Size: These are the sizes for the OS-independent 7070acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7071debug version of the code includes the debug output trace mechanism and 7072has a 7073much 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 70822) iASL Compiler/Disassembler and Tools: 7083 7084ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI 7085operation region keyword. ACPICA BZ 771, 772. Lin Ming. 7086 7087ACPI 4.0: iASL - implemented compile-time validation support for all new 7088predefined names and control methods (31 total). ACPICA BZ 769. 7089 7090---------------------------------------- 709121 May 2009. Summary of changes for version 20090521: 7092 70931) ACPI CA Core Subsystem: 7094 7095Disabled the preservation of the SCI enable bit in the PM1 control 7096register. 7097The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification 7098to 7099be 7100a "preserved" bit - "OSPM always preserves this bit position", section 71014.7.3.2.1. However, some machines fail if this bit is in fact preserved 7102because the bit needs to be explicitly set by the OS as a workaround. No 7103machines fail if the bit is not preserved. Therefore, ACPICA no longer 7104attempts to preserve this bit. 7105 7106Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or 7107incorrectly formed _PRT package could cause a fault. Added validation to 7108ensure that each package element is actually a sub-package. 7109 7110Implemented a new interface to install or override a single control 7111method, 7112AcpiInstallMethod. This interface is useful when debugging in order to 7113repair 7114an existing method or to install a missing method without having to 7115override 7116the entire ACPI table. See the ACPICA Programmer Reference for use and 7117examples. Lin Ming, Bob Moore. 7118 7119Fixed several reference count issues with the DdbHandle object that is 7120created from a Load or LoadTable operator. Prevent premature deletion of 7121the 7122object. Also, mark the object as invalid once the table has been 7123unloaded. 7124This is needed because the handle itself may not be deleted after the 7125table 7126unload, depending on whether it has been stored in a named object by the 7127caller. Lin Ming. 7128 7129Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple 7130mutexes of the same sync level are acquired but then not released in 7131strict 7132opposite order, the internally maintained Current Sync Level becomes 7133confused 7134and can cause subsequent execution errors. ACPICA BZ 471. 7135 7136Changed the allowable release order for ASL mutex objects. The ACPI 4.0 7137specification has been changed to make the SyncLevel for mutex objects 7138more 7139useful. When releasing a mutex, the SyncLevel of the mutex must now be 7140the 7141same as the current sync level. This makes more sense than the previous 7142rule 7143(SyncLevel less than or equal). This change updates the code to match the 7144specification. 7145 7146Fixed a problem with the local version of the AcpiOsPurgeCache function. 7147The 7148(local) cache must be locked during all cache object deletions. Andrew 7149Baumann. 7150 7151Updated the Load operator to use operation region interfaces. This 7152replaces 7153direct memory mapping with region access calls. Now, all region accesses 7154go 7155through the installed region handler as they should. 7156 7157Simplified and optimized the NsGetNextNode function. Reduced parameter 7158count 7159and reduced code for this frequently used function. 7160 7161Example Code and Data Size: These are the sizes for the OS-independent 7162acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7163debug version of the code includes the debug output trace mechanism and 7164has a 7165much 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 71742) iASL Compiler/Disassembler and Tools: 7175 7176Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some 7177problems 7178with sub-table disassembly and handling invalid sub-tables. Attempt 7179recovery 7180after an invalid sub-table ID. 7181 7182---------------------------------------- 718322 April 2009. Summary of changes for version 20090422: 7184 71851) ACPI CA Core Subsystem: 7186 7187Fixed a compatibility issue with the recently released I/O port 7188protection 7189mechanism. For windows compatibility, 1) On a port protection violation, 7190simply ignore the request and do not return an exception (allow the 7191control 7192method to continue execution.) 2) If only part of the request overlaps a 7193protected port, read/write the individual ports that are not protected. 7194Linux 7195BZ 13036. Lin Ming 7196 7197Enhanced the execution of the ASL/AML BreakPoint operator so that it 7198actually 7199breaks into the AML debugger if the debugger is present. This matches the 7200ACPI-defined behavior. 7201 7202Fixed several possible warnings related to the use of the configurable 7203ACPI_THREAD_ID. This type can now be configured as either an integer or a 7204pointer with no warnings. Also fixes several warnings in printf-like 7205statements for the 64-bit build when the type is configured as a pointer. 7206ACPICA BZ 766, 767. 7207 7208Fixed a number of possible warnings when compiling with gcc 4+ (depending 7209on 7210warning options.) Examples include printf formats, aliasing, unused 7211globals, 7212missing prototypes, missing switch default statements, use of non-ANSI 7213library functions, use of non-ANSI constructs. See generate/unix/Makefile 7214for 7215a list of warning options used with gcc 3 and 4. ACPICA BZ 735. 7216 7217Example Code and Data Size: These are the sizes for the OS-independent 7218acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7219debug version of the code includes the debug output trace mechanism and 7220has a 7221much 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 72302) iASL Compiler/Disassembler and Tools: 7231 7232iASL: Fixed a generation warning from Bison 2.3 and fixed several 7233warnings 7234on 7235the 64-bit build. 7236 7237iASL: Fixed a problem where the Unix/Linux versions of the compiler could 7238not 7239correctly digest Windows/DOS formatted files (with CR/LF). 7240 7241iASL: Added a new option for "quiet mode" (-va) that produces only the 7242compilation summary, not individual errors and warnings. Useful for large 7243batch compilations. 7244 7245AcpiExec: Implemented a new option (-z) to enable a forced 7246semaphore/mutex 7247timeout that can be used to detect hang conditions during execution of 7248AML 7249code (includes both internal semaphores and AML-defined mutexes and 7250events.) 7251 7252Added new makefiles for the generation of acpica in a generic unix-like 7253environment. These makefiles are intended to generate the acpica tools 7254and 7255utilities from the original acpica git source tree structure. 7256 7257Test Suites: Updated and cleaned up the documentation files. Updated the 7258copyrights to 2009, affecting all source files. Use the new version of 7259iASL 7260with quiet mode. Increased the number of available semaphores in the 7261Windows 7262OSL, allowing the aslts to execute fully on Windows. For the Unix OSL, 7263added 7264an alternate implementation of the semaphore timeout to allow aslts to 7265execute fully on Cygwin. 7266 7267---------------------------------------- 726820 March 2009. Summary of changes for version 20090320: 7269 72701) ACPI CA Core Subsystem: 7271 7272Fixed a possible race condition between AcpiWalkNamespace and dynamic 7273table 7274unloads. Added a reader/writer locking mechanism to allow multiple 7275concurrent 7276namespace walks (readers), but block a dynamic table unload until it can 7277gain 7278exclusive write access to the namespace. This fixes a problem where a 7279table 7280unload could (possibly catastrophically) delete the portion of the 7281namespace 7282that is currently being examined by a walk. Adds a new file, utlock.c, 7283that 7284implements the reader/writer lock mechanism. ACPICA BZ 749. 7285 7286Fixed a regression introduced in version 20090220 where a change to the 7287FADT 7288handling could cause the ACPICA subsystem to access non-existent I/O 7289ports. 7290 7291Modified the handling of FADT register and table (FACS/DSDT) addresses. 7292The 7293FADT can contain both 32-bit and 64-bit versions of these addresses. 7294Previously, the 64-bit versions were favored, meaning that if both 32 and 729564 7296versions were valid, but not equal, the 64-bit version was used. This was 7297found to cause some machines to fail. Now, in this case, the 32-bit 7298version 7299is used instead. This now matches the Windows behavior. 7300 7301Implemented a new mechanism to protect certain I/O ports. Provides 7302Microsoft 7303compatibility and protects the standard PC I/O ports from access via AML 7304code. Adds a new file, hwvalid.c 7305 7306Fixed a possible extraneous warning message from the FADT support. The 7307message warns of a 32/64 length mismatch between the legacy and GAS 7308definitions for a register. 7309 7310Removed the obsolete AcpiOsValidateAddress OSL interface. This interface 7311is 7312made obsolete by the port protection mechanism above. It was previously 7313used 7314to validate the entire address range of an operation region, which could 7315be 7316incorrect if the range included illegal ports, but fields within the 7317operation region did not actually access those ports. Validation is now 7318performed on a per-field basis instead of the entire region. 7319 7320Modified the handling of the PM1 Status Register ignored bit (bit 11.) 7321Ignored bits must be "preserved" according to the ACPI spec. Usually, 7322this 7323means a read/modify/write when writing to the register. However, for 7324status 7325registers, writing a one means clear the event. Writing a zero means 7326preserve 7327the event (do not clear.) This behavior is clarified in the ACPI 4.0 7328spec, 7329and the ACPICA code now simply always writes a zero to the ignored bit. 7330 7331Modified the handling of ignored bits for the PM1 A/B Control Registers. 7332As 7333per the ACPI specification, for the control registers, preserve 7334(read/modify/write) all bits that are defined as either reserved or 7335ignored. 7336 7337Updated the handling of write-only bits in the PM1 A/B Control Registers. 7338When reading the register, zero the write-only bits as per the ACPI spec. 7339ACPICA BZ 443. Lin Ming. 7340 7341Removed "Linux" from the list of supported _OSI strings. Linux no longer 7342wants to reply true to this request. The Windows strings are the only 7343paths 7344through 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 73532) iASL Compiler/Disassembler and Tools: 7354 7355Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c 7356and 7357aetables.c 7358 7359---------------------------------------- 736020 February 2009. Summary of changes for version 20090220: 7361 73621) ACPI CA Core Subsystem: 7363 7364Optimized the ACPI register locking. Removed locking for reads from the 7365ACPI 7366bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock 7367is 7368not required when reading the single-bit registers. The 7369AcpiGetRegisterUnlocked function is no longer needed and has been 7370removed. 7371This will improve performance for reads on these registers. ACPICA BZ 7372760. 7373 7374Fixed the parameter validation for AcpiRead/Write. Now return 7375AE_BAD_PARAMETER if the input register pointer is null, and 7376AE_BAD_ADDRESS 7377if 7378the register has an address of zero. Previously, these cases simply 7379returned 7380AE_OK. For optional registers such as PM1B status/enable/control, the 7381caller 7382should check for a valid register address before calling. ACPICA BZ 748. 7383 7384Renamed the external ACPI bit register access functions. Renamed 7385AcpiGetRegister and AcpiSetRegister to clarify the purpose of these 7386functions. The new names are AcpiReadBitRegister and 7387AcpiWriteBitRegister. 7388Also, restructured the code for these functions by simplifying the code 7389path 7390and condensing duplicate code to reduce code size. 7391 7392Added new functions to transparently handle the possibly split PM1 A/B 7393registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two 7394functions 7395now handle the split registers for PM1 Status, Enable, and Control. 7396ACPICA 7397BZ 7398746. 7399 7400Added a function to handle the PM1 control registers, 7401AcpiHwWritePm1Control. 7402This function writes both of the PM1 control registers (A/B). These 7403registers 7404are different than the PM1 A/B status and enable registers in that 7405different 7406values can be written to the A/B registers. Most notably, the SLP_TYP 7407bits 7408can be different, as per the values returned from the _Sx predefined 7409methods. 7410 7411Removed an extra register write within AcpiHwClearAcpiStatus. This 7412function 7413was writing an optional PM1B status register twice. The existing call to 7414the 7415low-level AcpiHwRegisterWrite automatically handles a possibly split PM1 7416A/B 7417register. ACPICA BZ 751. 7418 7419Split out the PM1 Status registers from the FADT. Added new globals for 7420these 7421registers (A/B), similar to the way the PM1 Enable registers are handled. 7422Instead of overloading the FADT Event Register blocks. This makes the 7423code 7424clearer and less prone to error. 7425 7426Fixed the warning message for when the platform contains too many ACPI 7427tables 7428for the default size of the global root table data structure. The 7429calculation 7430for the truncation value was incorrect. 7431 7432Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this 7433obsolete macro, since it is now a simple reference to ->common.type. 7434There 7435were about 150 invocations of the macro across 41 files. ACPICA BZ 755. 7436 7437Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as 7438TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to 7439simply SLEEP_TYPE. ACPICA BZ 754. 7440 7441Conditionally compile the AcpiSetFirmwareWakingVector64 function. This 7442function is only needed on 64-bit host operating systems and is thus not 7443included for 32-bit hosts. 7444 7445Debug output: print the input and result for invocations of the _OSI 7446reserved 7447control method via the ACPI_LV_INFO debug level. Also, reduced some of 7448the 7449verbosity of this debug level. Len Brown. 7450 7451Example Code and Data Size: These are the sizes for the OS-independent 7452acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7453debug version of the code includes the debug output trace mechanism and 7454has a 7455much 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 74642) iASL Compiler/Disassembler and Tools: 7465 7466Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the 7467various legal performance profiles. 7468 7469---------------------------------------- 747023 January 2009. Summary of changes for version 20090123: 7471 74721) ACPI CA Core Subsystem: 7473 7474Added the 2009 copyright to all module headers and signons. This affects 7475virtually every file in the ACPICA core subsystem, the iASL compiler, and 7476the tools/utilities. 7477 7478Implemented a change to allow the host to override any ACPI table, 7479including 7480dynamically loaded tables. Previously, only the DSDT could be replaced by 7481the 7482host. With this change, the AcpiOsTableOverride interface is called for 7483each 7484table found in the RSDT/XSDT during ACPICA initialization, and also 7485whenever 7486a table is dynamically loaded via the AML Load operator. 7487 7488Updated FADT flag definitions, especially the Boot Architecture flags. 7489 7490Debugger: For the Find command, automatically pad the input ACPI name 7491with 7492underscores if the name is shorter than 4 characters. This enables a 7493match 7494with the actual namespace entry which is itself padded with underscores. 7495 7496Example Code and Data Size: These are the sizes for the OS-independent 7497acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7498debug version of the code includes the debug output trace mechanism and 7499has a 7500much 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 75092) iASL Compiler/Disassembler and Tools: 7510 7511Fix build error under Bison-2.4. 7512 7513Dissasembler: Enhanced FADT support. Added decoding of the Boot 7514Architecture 7515flags. Now decode all flags, regardless of the FADT version. Flag output 7516includes the FADT version which first defined each flag. 7517 7518The iASL -g option now dumps the RSDT to a file (in addition to the FADT 7519and 7520DSDT). Windows only. 7521 7522---------------------------------------- 752304 December 2008. Summary of changes for version 20081204: 7524 75251) ACPI CA Core Subsystem: 7526 7527The ACPICA Programmer Reference has been completely updated and revamped 7528for 7529this release. This includes updates to the external interfaces, OSL 7530interfaces, the overview sections, and the debugger reference. 7531 7532Several new ACPICA interfaces have been implemented and documented in the 7533programmer reference: 7534AcpiReset - Writes the reset value to the FADT-defined reset register. 7535AcpiDisableAllGpes - Disable all available GPEs. 7536AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs. 7537AcpiGetGpeDevice - Get the GPE block device associated with a GPE. 7538AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs. 7539AcpiRead - Low-level read ACPI register (was HwLowLevelRead.) 7540AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.) 7541 7542Most of the public ACPI hardware-related interfaces have been moved to a 7543new 7544file, components/hardware/hwxface.c 7545 7546Enhanced the FADT parsing and low-level ACPI register access: The ACPI 7547register lengths within the FADT are now used, and the low level ACPI 7548register access no longer hardcodes the ACPI register lengths. Given that 7549there may be some risk in actually trusting the FADT register lengths, a 7550run- 7551time option was added to fall back to the default hardcoded lengths if 7552the 7553FADT proves to contain incorrect values - UseDefaultRegisterWidths. This 7554option is set to true for now, and a warning is issued if a suspicious 7555FADT 7556register length is overridden with the default value. 7557 7558Fixed a reference count issue in NsRepairObject. This problem was 7559introduced 7560in version 20081031 as part of a fix to repair Buffer objects within 7561Packages. Lin Ming. 7562 7563Added semaphore support to the Linux/Unix application OS-services layer 7564(OSL). ACPICA BZ 448. Lin Ming. 7565 7566Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes 7567will 7568be implemented in the OSL, or will binary semaphores be used instead. 7569 7570Example Code and Data Size: These are the sizes for the OS-independent 7571acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7572debug version of the code includes the debug output trace mechanism and 7573has a 7574much 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 75832) iASL Compiler/Disassembler and Tools: 7584 7585iASL: Completed the '-e' option to include additional ACPI tables in 7586order 7587to 7588aid with disassembly and External statement generation. ACPICA BZ 742. 7589Lin 7590Ming. 7591 7592iASL: Removed the "named object in while loop" error. The compiler cannot 7593determine how many times a loop will execute. ACPICA BZ 730. 7594 7595Disassembler: Implemented support for FADT revision 2 (MS extension). 7596ACPICA 7597BZ 743. 7598 7599Disassembler: Updates for several ACPI data tables (HEST, EINJ, and 7600MCFG). 7601 7602---------------------------------------- 760331 October 2008. Summary of changes for version 20081031: 7604 76051) ACPI CA Core Subsystem: 7606 7607Restructured the ACPICA header files into public/private. acpi.h now 7608includes 7609only the "public" acpica headers. All other acpica headers are "private" 7610and 7611should not be included by acpica users. One new file, accommon.h is used 7612to 7613include the commonly used private headers for acpica code generation. 7614Future 7615plans include moving all private headers to a new subdirectory. 7616 7617Implemented an automatic Buffer->String return value conversion for 7618predefined ACPI methods. For these methods (such as _BIF), added 7619automatic 7620conversion for return objects that are required to be a String, but a 7621Buffer 7622was found instead. This can happen when reading string battery data from 7623an 7624operation region, because it used to be difficult to convert the data 7625from 7626buffer to string from within the ASL. Ensures that the host OS is 7627provided 7628with a valid null-terminated string. Linux BZ 11822. 7629 7630Updated the FACS waking vector interfaces. Split 7631AcpiSetFirmwareWakingVector 7632into two: one for the 32-bit vector, another for the 64-bit vector. This 7633is 7634required because the host OS must setup the wake much differently for 7635each 7636vector (real vs. protected mode, etc.) and the interface itself should 7637not 7638be 7639deciding which vector to use. Also, eliminated the 7640GetFirmwareWakingVector 7641interface, as it served no purpose (only the firmware reads the vector, 7642OS 7643only writes the vector.) ACPICA BZ 731. 7644 7645Implemented a mechanism to escape infinite AML While() loops. Added a 7646loop 7647counter to force exit from AML While loops if the count becomes too 7648large. 7649This can occur in poorly written AML when the hardware does not respond 7650within a while loop and the loop does not implement a timeout. The 7651maximum 7652loop count is configurable. A new exception code is returned when a loop 7653is 7654broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore. 7655 7656Optimized the execution of AML While loops. Previously, a control state 7657object was allocated and freed for each execution of the loop. The 7658optimization is to simply reuse the control state for each iteration. 7659This 7660speeds up the raw loop execution time by about 5%. 7661 7662Enhanced the implicit return mechanism. For Windows compatibility, return 7663an 7664implicit integer of value zero for methods that contain no executable 7665code. 7666Such methods are seen in the field as stubs (presumably), and can cause 7667drivers to fail if they expect a return value. Lin Ming. 7668 7669Allow multiple backslashes as root prefixes in namepaths. In a fully 7670qualified namepath, allow multiple backslash prefixes. This can happen 7671(and 7672is 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 7674739 7675Lin Ming. 7676 7677Emit a warning if two different FACS or DSDT tables are discovered in the 7678FADT. Checks if there are two valid but different addresses for the FACS 7679and 7680DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.) 7681 7682Consolidated the method argument count validation code. Merged the code 7683that 7684validates control method argument counts into the predefined validation 7685module. Eliminates possible multiple warnings for incorrect argument 7686counts. 7687 7688Implemented ACPICA example code. Includes code for ACPICA initialization, 7689handler installation, and calling a control method. Available at 7690source/tools/examples. 7691 7692Added a global pointer for FACS table to simplify internal FACS access. 7693Use 7694the global pointer instead of using AcpiGetTableByIndex for each FACS 7695access. 7696This simplifies the code for the Global Lock and the Firmware Waking 7697Vector(s). 7698 7699Example Code and Data Size: These are the sizes for the OS-independent 7700acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7701debug version of the code includes the debug output trace mechanism and 7702has a 7703much 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 77122) iASL Compiler/Disassembler and Tools: 7713 7714iASL: Improved disassembly of external method calls. Added the -e option 7715to 7716allow the inclusion of additional ACPI tables to help with the 7717disassembly 7718of 7719method invocations and the generation of external declarations during the 7720disassembly. Certain external method invocations cannot be disassembled 7721properly without the actual declaration of the method. Use the -e option 7722to 7723include the table where the external method(s) are actually declared. 7724Most 7725useful for disassembling SSDTs that make method calls back to the master 7726DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl 7727-d 7728-e dsdt.aml ssdt1.aml 7729 7730iASL: Fix to allow references to aliases within ASL namepaths. Fixes a 7731problem where the use of an alias within a namepath would result in a not 7732found error or cause the compiler to fault. Also now allows forward 7733references from the Alias operator itself. ACPICA BZ 738. 7734 7735---------------------------------------- 773626 September 2008. Summary of changes for version 20080926: 7737 77381) ACPI CA Core Subsystem: 7739 7740Designed and implemented a mechanism to validate predefined ACPI methods 7741and 7742objects. This code validates the predefined ACPI objects (objects whose 7743names 7744start with underscore) that appear in the namespace, at the time they are 7745evaluated. The argument count and the type of the returned object are 7746validated against the ACPI specification. The purpose of this validation 7747is 7748to detect problems with the BIOS-implemented predefined ACPI objects 7749before 7750the results are returned to the ACPI-related drivers. Future enhancements 7751may 7752include actual repair of incorrect return objects where possible. Two new 7753files are nspredef.c and acpredef.h. 7754 7755Fixed a fault in the AML parser if a memory allocation fails during the 7756Op 7757completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492. 7758 7759Fixed an issue with implicit return compatibility. This change improves 7760the 7761implicit return mechanism to be more compatible with the MS interpreter. 7762Lin 7763Ming, ACPICA BZ 349. 7764 7765Implemented support for zero-length buffer-to-string conversions. Allow 7766zero 7767length strings during interpreter buffer-to-string conversions. For 7768example, 7769during the ToDecimalString and ToHexString operators, as well as implicit 7770conversions. Fiodor Suietov, ACPICA BZ 585. 7771 7772Fixed two possible memory leaks in the error exit paths of 7773AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions 7774are 7775similar in that they use a stack of state objects in order to eliminate 7776recursion. The stack must be fully unwound and deallocated if an error 7777occurs. Lin Ming. ACPICA BZ 383. 7778 7779Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the 7780global 7781ACPI register table. This bit does not exist and is unused. Lin Ming, Bob 7782Moore ACPICA BZ 442. 7783 7784Removed the obsolete version number in module headers. Removed the 7785"$Revision" number that appeared in each module header. This version 7786number 7787was useful under SourceSafe and CVS, but has no meaning under git. It is 7788not 7789only incorrect, it could also be misleading. 7790 7791Example Code and Data Size: These are the sizes for the OS-independent 7792acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7793debug version of the code includes the debug output trace mechanism and 7794has a 7795much 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---------------------------------------- 780529 August 2008. Summary of changes for version 20080829: 7806 78071) ACPI CA Core Subsystem: 7808 7809Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type 7810Reference. Changes include the elimination of cheating on the Object 7811field 7812for the DdbHandle subtype, addition of a reference class field to 7813differentiate the various reference types (instead of an AML opcode), and 7814the 7815cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723 7816 7817Reduce an error to a warning for an incorrect method argument count. 7818Previously aborted with an error if too few arguments were passed to a 7819control method via the external ACPICA interface. Now issue a warning 7820instead 7821and continue. Handles the case where the method inadvertently declares 7822too 7823many arguments, but does not actually use the extra ones. Applies mainly 7824to 7825the predefined methods. Lin Ming. Linux BZ 11032. 7826 7827Disallow the evaluation of named object types with no intrinsic value. 7828Return 7829AE_TYPE for objects that have no value and therefore evaluation is 7830undefined: 7831Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation 7832of 7833these types were allowed, but an exception would be generated at some 7834point 7835during the evaluation. Now, the error is generated up front. 7836 7837Fixed a possible memory leak in the AcpiNsGetExternalPathname function 7838(nsnames.c). Fixes a leak in the error exit path. 7839 7840Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These 7841debug 7842levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and 7843ACPI_EXCEPTION 7844interfaces. Also added ACPI_DB_EVENTS to correspond with the existing 7845ACPI_LV_EVENTS. 7846 7847Removed obsolete and/or unused exception codes from the acexcep.h header. 7848There is the possibility that certain device drivers may be affected if 7849they 7850use any of these exceptions. 7851 7852The ACPICA documentation has been added to the public git source tree, 7853under 7854acpica/documents. Included are the ACPICA programmer reference, the iASL 7855compiler reference, and the changes.txt release logfile. 7856 7857Example Code and Data Size: These are the sizes for the OS-independent 7858acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7859debug version of the code includes the debug output trace mechanism and 7860has a 7861much 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 78702) iASL Compiler/Disassembler and Tools: 7871 7872Allow multiple argument counts for the predefined _SCP method. ACPI 3.0 7873defines _SCP with 3 arguments. Previous versions defined it with only 1 7874argument. iASL now allows both definitions. 7875 7876iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for 7877zero- 7878length subtables when disassembling ACPI tables. Also fixed a couple of 7879errors where a full 16-bit table type field was not extracted from the 7880input 7881properly. 7882 7883acpisrc: Improve comment counting mechanism for generating source code 7884statistics. Count first and last lines of multi-line comments as 7885whitespace, 7886not comment lines. Handle Linux legal header in addition to standard 7887acpica 7888header. 7889 7890---------------------------------------- 7891 789229 July 2008. Summary of changes for version 20080729: 7893 78941) ACPI CA Core Subsystem: 7895 7896Fix a possible deadlock in the GPE dispatch. Remove call to 7897AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will 7898attempt 7899to acquire the GPE lock but can deadlock since the GPE lock is already 7900held 7901at dispatch time. This code was introduced in version 20060831 as a 7902response 7903to Linux BZ 6881 and has since been removed from Linux. 7904 7905Add a function to dereference returned reference objects. Examines the 7906return 7907object from a call to AcpiEvaluateObject. Any Index or RefOf references 7908are 7909automatically dereferenced in an attempt to return something useful 7910(these 7911reference types cannot be converted into an external ACPI_OBJECT.) 7912Provides 7913MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105 7914 7915x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new 7916subtables for the MADT and one new subtable for the SRAT. Includes 7917disassembler and AcpiSrc support. Data from the Intel 64 Architecture 7918x2APIC 7919Specification, June 2008. 7920 7921Additional error checking for pathname utilities. Add error check after 7922all 7923calls to AcpiNsGetPathnameLength. Add status return from 7924AcpiNsBuildExternalPath and check after all calls. Add parameter 7925validation 7926to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar. 7927 7928Return status from the global init function AcpiUtGlobalInitialize. This 7929is 7930used by both the kernel subsystem and the utilities such as iASL 7931compiler. 7932The function could possibly fail when the caches are initialized. Yang 7933Yi. 7934 7935Add a function to decode reference object types to strings. Created for 7936improved error messages. 7937 7938Improve object conversion error messages. Better error messages during 7939object 7940conversion from internal to the external ACPI_OBJECT. Used for external 7941calls 7942to AcpiEvaluateObject. 7943 7944Example Code and Data Size: These are the sizes for the OS-independent 7945acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7946debug version of the code includes the debug output trace mechanism and 7947has a 7948much 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 79572) iASL Compiler/Disassembler and Tools: 7958 7959Debugger: fix a possible hang when evaluating non-methods. Fixes a 7960problem 7961introduced in version 20080701. If the object being evaluated (via 7962execute 7963command) is not a method, the debugger can hang while trying to obtain 7964non- 7965existent parameters. 7966 7967iASL: relax error for using reserved "_T_x" identifiers. These names can 7968appear in a disassembled ASL file if they were emitted by the original 7969compiler. Instead of issuing an error or warning and forcing the user to 7970manually change these names, issue a remark instead. 7971 7972iASL: error if named object created in while loop. Emit an error if any 7973named 7974object is created within a While loop. If allowed, this code will 7975generate 7976a 7977run-time error on the second iteration of the loop when an attempt is 7978made 7979to 7980create the same named object twice. ACPICA bugzilla 730. 7981 7982iASL: Support absolute pathnames for include files. Add support for 7983absolute 7984pathnames within the Include operator. previously, only relative 7985pathnames 7986were supported. 7987 7988iASL: Enforce minimum 1 interrupt in interrupt macro and Resource 7989Descriptor. 7990The ACPI spec requires one interrupt minimum. BZ 423 7991 7992iASL: Handle a missing ResourceSource arg, with a present SourceIndex. 7993Handles the case for the Interrupt Resource Descriptor where 7994the ResourceSource argument is omitted but ResourceSourceIndex 7995is present. Now leave room for the Index. BZ 426 7996 7997iASL: Prevent error message if CondRefOf target does not exist. Fixes 7998cases 7999where an error message is emitted if the target does not exist. BZ 516 8000 8001iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option 8002(get ACPI tables on Windows). This was apparently broken in version 800320070919. 8004 8005AcpiXtract: Handle EOF while extracting data. Correctly handle the case 8006where 8007the EOF happens immediately after the last table in the input file. Print 8008completion message. Previously, no message was displayed in this case. 8009 8010---------------------------------------- 801101 July 2008. Summary of changes for version 20080701: 8012 80130) Git source tree / acpica.org 8014 8015Fixed a problem where a git-clone from http would not transfer the entire 8016source tree. 8017 80181) ACPI CA Core Subsystem: 8019 8020Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one 8021enable bit. Now performs a read-change-write of the enable register 8022instead 8023of simply writing out the cached enable mask. This will prevent 8024inadvertent 8025enabling of GPEs if a rogue GPE is received during initialization (before 8026GPE 8027handlers are installed.) 8028 8029Implemented a copy for dynamically loaded tables. Previously, dynamically 8030loaded tables were simply mapped - but on some machines this memory is 8031corrupted after suspend. Now copy the table to a local buffer. For the 8032OpRegion case, added checksum verify. Use the table length from the table 8033header, not the region length. For the Buffer case, use the table length 8034also. Dennis Noordsij, Bob Moore. BZ 10734 8035 8036Fixed a problem where the same ACPI table could not be dynamically loaded 8037and 8038unloaded more than once. Without this change, a table cannot be loaded 8039again 8040once it has been loaded/unloaded one time. The current mechanism does not 8041unregister a table upon an unload. During a load, if the same table is 8042found, 8043this no longer returns an exception. BZ 722 8044 8045Fixed a problem where the wrong descriptor length was calculated for the 8046EndTag descriptor in 64-bit mode. The "minimal" descriptors such as 8047EndTag 8048are calculated as 12 bytes long, but the actual length in the internal 8049descriptor is 16 because of the round-up to 8 on the 64-bit build. 8050Reported 8051by Linn Crosetto. BZ 728 8052 8053Fixed a possible memory leak in the Unload operator. The DdbHandle 8054returned 8055by Load() did not have its reference count decremented during unload, 8056leading 8057to a memory leak. Lin Ming. BZ 727 8058 8059Fixed a possible memory leak when deleting thermal/processor objects. Any 8060associated notify handlers (and objects) were not being deleted. Fiodor 8061Suietov. BZ 506 8062 8063Fixed the ordering of the ASCII names in the global mutex table to match 8064the 8065actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug 8066only. 8067Vegard Nossum. BZ 726 8068 8069Enhanced the AcpiGetObjectInfo interface to return the number of required 8070arguments if the object is a control method. Added this call to the 8071debugger 8072so the proper number of default arguments are passed to a method. This 8073prevents a warning when executing methods from AcpiExec. 8074 8075Added a check for an invalid handle in AcpiGetObjectInfo. Return 8076AE_BAD_PARAMETER if input handle is invalid. BZ 474 8077 8078Fixed an extraneous warning from exconfig.c on the 64-bit build. 8079 8080Example Code and Data Size: These are the sizes for the OS-independent 8081acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8082debug version of the code includes the debug output trace mechanism and 8083has a 8084much 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 80932) iASL Compiler/Disassembler and Tools: 8094 8095iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both 8096resource descriptor names. 8097 8098iASL: Detect invalid ASCII characters in input (windows version). Removed 8099the 8100"-CF" flag from the flex compile, enables correct detection of non-ASCII 8101characters in the input. BZ 441 8102 8103iASL: Eliminate warning when result of LoadTable is not used. Eliminate 8104the 8105"result of operation not used" warning when the DDB handle returned from 8106LoadTable is not used. The warning is not needed. BZ 590 8107 8108AcpiExec: Add support for dynamic table load/unload. Now calls _CFG 8109method 8110to 8111pass address of table to the AML. Added option to disable OpRegion 8112simulation 8113to allow creation of an OpRegion with a real address that was passed to 8114_CFG. 8115All of this allows testing of the Load and Unload operators from 8116AcpiExec. 8117 8118Debugger: update tables command for unloaded tables. Handle unloaded 8119tables 8120and use the standard table header output routine. 8121 8122---------------------------------------- 812309 June 2008. Summary of changes for version 20080609: 8124 81251) ACPI CA Core Subsystem: 8126 8127Implemented a workaround for reversed _PRT entries. A significant number 8128of 8129BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This 8130change dynamically detects and repairs this problem. Provides 8131compatibility 8132with MS ACPI. BZ 6859 8133 8134Simplified the internal ACPI hardware interfaces to eliminate the locking 8135flag parameter from Register Read/Write. Added a new external interface, 8136AcpiGetRegisterUnlocked. 8137 8138Fixed a problem where the invocation of a GPE control method could hang. 8139This 8140was a regression introduced in 20080514. The new method argument count 8141validation mechanism can enter an infinite loop when a GPE method is 8142dispatched. Problem fixed by removing the obsolete code that passed GPE 8143block 8144information to the notify handler via the control method parameter 8145pointer. 8146 8147Fixed a problem where the _SST execution status was incorrectly returned 8148to 8149the caller of AcpiEnterSleepStatePrep. This was a regression introduced 8150in 815120080514. _SST is optional and a NOT_FOUND exception should never be 8152returned. BZ 716 8153 8154Fixed a problem where a deleted object could be accessed from within the 8155AML 8156parser. This was a regression introduced in version 20080123 as a fix for 8157the 8158Unload operator. Lin Ming. BZ 10669 8159 8160Cleaned up the debug operand dump mechanism. Eliminated unnecessary 8161operands 8162and eliminated the use of a negative index in a loop. Operands are now 8163displayed in the correct order, not backwards. This also fixes a 8164regression 8165introduced in 20080514 on 64-bit systems where the elimination of 8166ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ 8167715 8168 8169Fixed a possible memory leak in EvPciConfigRegionSetup where the error 8170exit 8171path did not delete a locally allocated structure. 8172 8173Updated definitions for the DMAR and SRAT tables to synchronize with the 8174current specifications. Includes disassembler support. 8175 8176Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect 8177loop termination value was used. Loop terminated on iteration early, 8178missing 8179one mutex. Linn Crosetto 8180 8181Example Code and Data Size: These are the sizes for the OS-independent 8182acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8183debug version of the code includes the debug output trace mechanism and 8184has a 8185much 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 81942) iASL Compiler/Disassembler and Tools: 8195 8196Disassembler: Implemented support for EisaId() within _CID objects. Now 8197disassemble integer _CID objects back to EisaId invocations, including 8198multiple integers within _CID packages. Includes single-step support for 8199debugger also. 8200 8201Disassembler: Added support for DMAR and SRAT table definition changes. 8202 8203---------------------------------------- 820414 May 2008. Summary of changes for version 20080514: 8205 82061) ACPI CA Core Subsystem: 8207 8208Fixed a problem where GPEs were enabled too early during the ACPICA 8209initialization. This could lead to "handler not installed" errors on some 8210machines. Moved GPE enable until after _REG/_STA/_INI methods are run. 8211This 8212ensures that all operation regions and devices throughout the namespace 8213have 8214been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916. 8215 8216Implemented a change to the enter sleep code. Moved execution of the _GTS 8217method to just before setting sleep enable bit. The execution was moved 8218from 8219AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed 8220immediately before the SLP_EN bit is set, as per the ACPI specification. 8221Luming Yu, BZ 1653. 8222 8223Implemented a fix to disable unknown GPEs (2nd version). Now always 8224disable 8225the GPE, even if ACPICA thinks that that it is already disabled. It is 8226possible that the AML or some other code has enabled the GPE unbeknownst 8227to 8228the ACPICA code. 8229 8230Fixed a problem with the Field operator where zero-length fields would 8231return 8232an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length 8233ASL 8234field declarations in Field(), BankField(), and IndexField(). BZ 10606. 8235 8236Implemented a fix for the Load operator, now load the table at the 8237namespace 8238root. This reverts a change introduced in version 20071019. The table is 8239now 8240loaded at the namespace root even though this goes against the ACPI 8241specification. This provides compatibility with other ACPI 8242implementations. 8243The ACPI specification will be updated to reflect this in ACPI 4.0. Lin 8244Ming. 8245 8246Fixed a problem where ACPICA would not Load() tables with unusual 8247signatures. 8248Now ignore ACPI table signature for Load() operator. Only "SSDT" is 8249acceptable to the ACPI spec, but tables are seen with OEMx and null sigs. 8250Therefore, signature validation is worthless. Apparently MS ACPI accepts 8251such 8252signatures, ACPICA must be compatible. BZ 10454. 8253 8254Fixed a possible negative array index in AcpiUtValidateException. Added 8255NULL 8256fields to the exception string arrays to eliminate a -1 subtraction on 8257the 8258SubStatus field. 8259 8260Updated the debug tracking macros to reduce overall code and data size. 8261Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings 8262instead of pointers to static strings. Jan Beulich and Bob Moore. 8263 8264Implemented argument count checking in control method invocation via 8265AcpiEvaluateObject. Now emit an error if too few arguments, warning if 8266too 8267many. This applies only to extern programmatic control method execution, 8268not 8269method-to-method calls within the AML. Lin Ming. 8270 8271Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is 8272no 8273longer needed, especially with the removal of 16-bit support. It was 8274replaced 8275mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64 8276bit 8277on 827832/64-bit platforms is required. 8279 8280Added the C const qualifier for appropriate string constants -- mostly 8281MODULE_NAME and printf format strings. Jan Beulich. 8282 8283Example Code and Data Size: These are the sizes for the OS-independent 8284acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8285debug version of the code includes the debug output trace mechanism and 8286has a 8287much 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 82962) iASL Compiler/Disassembler and Tools: 8297 8298Implemented ACPI table revision ID validation in the disassembler. Zero 8299is 8300always invalid. For DSDTs, the ID controls the interpreter integer width. 83011 8302means 32-bit and this is unusual. 2 or greater is 64-bit. 8303 8304---------------------------------------- 830521 March 2008. Summary of changes for version 20080321: 8306 83071) ACPI CA Core Subsystem: 8308 8309Implemented an additional change to the GPE support in order to suppress 8310spurious or stray GPEs. The AcpiEvDisableGpe function will now 8311permanently 8312disable incoming GPEs that are neither enabled nor disabled -- meaning 8313that 8314the GPE is unknown to the system. This should prevent future interrupt 8315floods 8316from that GPE. BZ 6217 (Zhang Rui) 8317 8318Fixed a problem where NULL package elements were not returned to the 8319AcpiEvaluateObject interface correctly. The element was simply ignored 8320instead of returning a NULL ACPI_OBJECT package element, potentially 8321causing 8322a buffer overflow and/or confusing the caller who expected a fixed number 8323of 8324elements. BZ 10132 (Lin Ming, Bob Moore) 8325 8326Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word, 8327Dword, 8328Qword), Field, BankField, and IndexField operators when invoked from 8329inside 8330an executing control method. In this case, these operators created 8331namespace 8332nodes that were incorrectly left marked as permanent nodes instead of 8333temporary nodes. This could cause a problem if there is race condition 8334between an exiting control method and a running namespace walk. (Reported 8335by 8336Linn Crosetto) 8337 8338Fixed a problem where the CreateField and CreateXXXField operators would 8339incorrectly allow duplicate names (the name of the field) with no 8340exception 8341generated. 8342 8343Implemented several changes for Notify handling. Added support for new 8344Notify 8345values (ACPI 2.0+) and improved the Notify debug output. Notify on 8346PowerResource objects is no longer allowed, as per the ACPI 8347specification. 8348(Bob Moore, Zhang Rui) 8349 8350All Reference Objects returned via the AcpiEvaluateObject interface are 8351now 8352marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved 8353for 8354NULL objects - either NULL package elements or unresolved named 8355references. 8356 8357Fixed a problem where an extraneous debug message was produced for 8358package 8359objects (when debugging enabled). The message "Package List length larger 8360than NumElements count" is now produced in the correct case, and is now 8361an 8362error message rather than a debug message. Added a debug message for the 8363opposite case, where NumElements is larger than the Package List (the 8364package 8365will be padded out with NULL elements as per the ACPI spec.) 8366 8367Implemented several improvements for the output of the ASL "Debug" object 8368to 8369clarify and keep all data for a given object on one output line. 8370 8371Fixed two size calculation issues with the variable-length Start 8372Dependent 8373resource descriptor. 8374 8375Example Code and Data Size: These are the sizes for the OS-independent 8376acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8377debug version of the code includes the debug output trace mechanism and 8378has 8379a 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 83882) iASL Compiler/Disassembler and Tools: 8389 8390Fixed a problem with the use of the Switch operator where execution of 8391the 8392containing method by multiple concurrent threads could cause an 8393AE_ALREADY_EXISTS exception. This is caused by the fact that there is no 8394actual Switch opcode, it must be simulated with local named temporary 8395variables and if/else pairs. The solution chosen was to mark any method 8396that 8397uses Switch as Serialized, thus preventing multiple thread entries. BZ 8398469. 8399 8400---------------------------------------- 840113 February 2008. Summary of changes for version 20080213: 8402 84031) ACPI CA Core Subsystem: 8404 8405Implemented another MS compatibility design change for GPE/Notify 8406handling. 8407GPEs are now cleared/enabled asynchronously to allow all pending notifies 8408to 8409complete first. It is expected that the OSL will queue the enable request 8410behind all pending notify requests (may require changes to the local host 8411OSL 8412in AcpiOsExecute). Alexey Starikovskiy. 8413 8414Fixed a problem where buffer and package objects passed as arguments to a 8415control method via the external AcpiEvaluateObject interface could cause 8416an 8417AE_AML_INTERNAL exception depending on the order and type of operators 8418executed by the target control method. 8419 8420Fixed a problem where resource descriptor size optimization could cause a 8421problem when a _CRS resource template is passed to a _SRS method. The 8422_SRS 8423resource template must use the same descriptors (with the same size) as 8424returned from _CRS. This change affects the following resource 8425descriptors: 8426IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ 84279487) 8428 8429Fixed a problem where a CopyObject to RegionField, BankField, and 8430IndexField 8431objects did not perform an implicit conversion as it should. These types 8432must 8433retain their initial type permanently as per the ACPI specification. 8434However, 8435a CopyObject to all other object types should not perform an implicit 8436conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388 8437 8438Fixed a problem with the AcpiGetDevices interface where the mechanism to 8439match device CIDs did not examine the entire list of available CIDs, but 8440instead aborted on the first non-matching CID. Andrew Patterson. 8441 8442Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro 8443was 8444inadvertently changed to return a 16-bit value instead of a 32-bit value, 8445truncating the upper dword of a 64-bit value. This macro is only used to 8446display debug output, so no incorrect calculations were made. Also, 8447reimplemented the macro so that a 64-bit shift is not performed by 8448inefficient compilers. 8449 8450Added missing va_end statements that should correspond with each va_start 8451statement. 8452 8453Example Code and Data Size: These are the sizes for the OS-independent 8454acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8455debug version of the code includes the debug output trace mechanism and 8456has 8457a 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 84662) iASL Compiler/Disassembler and Tools: 8467 8468Implemented full disassembler support for the following new ACPI tables: 8469BERT, EINJ, and ERST. Implemented partial disassembler support for the 8470complicated HEST table. These tables support the Windows Hardware Error 8471Architecture (WHEA). 8472 8473---------------------------------------- 847423 January 2008. Summary of changes for version 20080123: 8475 84761) ACPI CA Core Subsystem: 8477 8478Added the 2008 copyright to all module headers and signons. This affects 8479virtually every file in the ACPICA core subsystem, the iASL compiler, and 8480the tools/utilities. 8481 8482Fixed a problem with the SizeOf operator when used with Package and 8483Buffer 8484objects. These objects have deferred execution for some arguments, and 8485the 8486execution is now completed before the SizeOf is executed. This problem 8487caused 8488unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore) 8489BZ 84909558 8491 8492Implemented an enhancement to the interpreter "slack mode". In the 8493absence 8494of 8495an explicit return or an implicitly returned object from the last 8496executed 8497opcode, a control method will now implicitly return an integer of value 0 8498for 8499Microsoft compatibility. (Lin Ming) BZ 392 8500 8501Fixed a problem with the Load operator where an exception was not 8502returned 8503in 8504the case where the table is already loaded. (Lin Ming) BZ 463 8505 8506Implemented support for the use of DDBHandles as an Indexed Reference, as 8507per 8508the ACPI spec. (Lin Ming) BZ 486 8509 8510Implemented support for UserTerm (Method invocation) for the Unload 8511operator 8512as per the ACPI spec. (Lin Ming) BZ 580 8513 8514Fixed a problem with the LoadTable operator where the OemId and 8515OemTableId 8516input strings could cause unexpected failures if they were shorter than 8517the 8518maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576 8519 8520Implemented support for UserTerm (Method invocation) for the Unload 8521operator 8522as per the ACPI spec. (Lin Ming) BZ 580 8523 8524Implemented header file support for new ACPI tables - BERT, ERST, EINJ, 8525HEST, 8526IBFT, UEFI, WDAT. Disassembler support is forthcoming. 8527 8528Example Code and Data Size: These are the sizes for the OS-independent 8529acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8530debug version of the code includes the debug output trace mechanism and 8531has 8532a 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 85412) iASL Compiler/Disassembler and Tools: 8542 8543Implemented support in the disassembler for checksum validation on 8544incoming 8545binary DSDTs and SSDTs. If incorrect, a message is displayed within the 8546table 8547header dump at the start of the disassembly. 8548 8549Implemented additional debugging information in the namespace listing 8550file 8551created during compilation. In addition to the namespace hierarchy, the 8552full 8553pathname to each namespace object is displayed. 8554 8555Fixed a problem with the disassembler where invalid ACPI tables could 8556cause 8557faults or infinite loops. 8558 8559Fixed an unexpected parse error when using the optional "parameter types" 8560list in a control method declaration. (Lin Ming) BZ 397 8561 8562Fixed a problem where two External declarations with the same name did 8563not 8564cause an error (Lin Ming) BZ 509 8565 8566Implemented support for full TermArgs (adding Argx, Localx and method 8567invocation) for the ParameterData parameter to the LoadTable operator. 8568(Lin 8569Ming) BZ 583,587 8570 8571---------------------------------------- 857219 December 2007. Summary of changes for version 20071219: 8573 85741) ACPI CA Core Subsystem: 8575 8576Implemented full support for deferred execution for the TermArg string 8577arguments for DataTableRegion. This enables forward references and full 8578operand resolution for the three string arguments. Similar to 8579OperationRegion 8580deferred argument execution.) Lin Ming. BZ 430 8581 8582Implemented full argument resolution support for the BankValue argument 8583to 8584BankField. Previously, only constants were supported, now any TermArg may 8585be 8586used. Lin Ming BZ 387, 393 8587 8588Fixed a problem with AcpiGetDevices where the search of a branch of the 8589device tree could be terminated prematurely. In accordance with the ACPI 8590specification, the search down the current branch is terminated if a 8591device 8592is both not present and not functional (instead of just not present.) 8593Yakui 8594Zhao. 8595 8596Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly 8597if 8598the underlying AML code changed the GPE enable registers. Now, any 8599unknown 8600incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately 8601disabled 8602instead of simply ignored. Rui Zhang. 8603 8604Fixed a problem with Index Fields where the Index register was 8605incorrectly 8606limited to a maximum of 32 bits. Now any size may be used. 8607 8608Fixed a couple memory leaks associated with "implicit return" objects 8609when 8610the AML Interpreter slack mode is enabled. Lin Ming BZ 349 8611 8612Example Code and Data Size: These are the sizes for the OS-independent 8613acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8614debug version of the code includes the debug output trace mechanism and 8615has 8616a 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---------------------------------------- 862614 November 2007. Summary of changes for version 20071114: 8627 86281) ACPI CA Core Subsystem: 8629 8630Implemented event counters for each of the Fixed Events, the ACPI SCI 8631(interrupt) itself, and control methods executed. Named 8632AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively. 8633These 8634should be useful for debugging and statistics. 8635 8636Implemented a new external interface, AcpiGetStatistics, to retrieve the 8637contents of the various event counters. Returns the current values for 8638AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and 8639AcpiMethodCount. The interface can be expanded in the future if new 8640counters 8641are added. Device drivers should use this interface rather than access 8642the 8643counters directly. 8644 8645Fixed a problem with the FromBCD and ToBCD operators. With some 8646compilers, 8647the ShortDivide function worked incorrectly, causing problems with the 8648BCD 8649functions with large input values. A truncation from 64-bit to 32-bit 8650inadvertently occurred. Internal BZ 435. Lin Ming 8651 8652Fixed a problem with Index references passed as method arguments. 8653References 8654passed as arguments to control methods were dereferenced immediately 8655(before 8656control was passed to the called method). The references are now 8657correctly 8658passed directly to the called method. BZ 5389. Lin Ming 8659 8660Fixed a problem with CopyObject used in conjunction with the Index 8661operator. 8662The reference was incorrectly dereferenced before the copy. The reference 8663is 8664now correctly copied. BZ 5391. Lin Ming 8665 8666Fixed a problem with Control Method references within Package objects. 8667These 8668references are now correctly generated. This completes the package 8669construction overhaul that began in version 20071019. 8670 8671Example Code and Data Size: These are the sizes for the OS-independent 8672acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8673debug version of the code includes the debug output trace mechanism and 8674has 8675a 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 86852) iASL Compiler/Disassembler and Tools: 8686 8687The AcpiExec utility now installs handlers for all of the predefined 8688Operation Region types. New types supported are: PCI_Config, CMOS, and 8689PCIBARTarget. 8690 8691Fixed a problem with the 64-bit version of AcpiExec where the extended 8692(64- 8693bit) address fields for the DSDT and FACS within the FADT were not being 8694used, causing truncation of the upper 32-bits of these addresses. Lin 8695Ming 8696and Bob Moore 8697 8698---------------------------------------- 869919 October 2007. Summary of changes for version 20071019: 8700 87011) ACPI CA Core Subsystem: 8702 8703Fixed a problem with the Alias operator when the target of the alias is a 8704named ASL operator that opens a new scope -- Scope, Device, 8705PowerResource, 8706Processor, and ThermalZone. In these cases, any children of the original 8707operator could not be accessed via the alias, potentially causing 8708unexpected 8709AE_NOT_FOUND exceptions. (BZ 9067) 8710 8711Fixed a problem with the Package operator where all named references were 8712created as object references and left otherwise unresolved. According to 8713the 8714ACPI specification, a Package can only contain Data Objects or references 8715to 8716control methods. The implication is that named references to Data Objects 8717(Integer, Buffer, String, Package, BufferField, Field) should be resolved 8718immediately upon package creation. This is the approach taken with this 8719change. References to all other named objects (Methods, Devices, Scopes, 8720etc.) are all now properly created as reference objects. (BZ 5328) 8721 8722Reverted a change to Notify handling that was introduced in version 872320070508. This version changed the Notify handling from asynchronous to 8724fully synchronous (Device driver Notify handling with respect to the 8725Notify 8726ASL operator). It was found that this change caused more problems than it 8727solved and was removed by most users. 8728 8729Fixed a problem with the Increment and Decrement operators where the type 8730of 8731the target object could be unexpectedly and incorrectly changed. (BZ 353) 8732Lin Ming. 8733 8734Fixed a problem with the Load and LoadTable operators where the table 8735location within the namespace was ignored. Instead, the table was always 8736loaded into the root or current scope. Lin Ming. 8737 8738Fixed a problem with the Load operator when loading a table from a buffer 8739object. The input buffer was prematurely zeroed and/or deleted. (BZ 577) 8740 8741Fixed a problem with the Debug object where a store of a DdbHandle 8742reference 8743object to the Debug object could cause a fault. 8744 8745Added a table checksum verification for the Load operator, in the case 8746where 8747the load is from a buffer. (BZ 578). 8748 8749Implemented additional parameter validation for the LoadTable operator. 8750The 8751length of the input strings SignatureString, OemIdString, and OemTableId 8752are 8753now checked for maximum lengths. (BZ 582) Lin Ming. 8754 8755Example Code and Data Size: These are the sizes for the OS-independent 8756acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8757debug version of the code includes the debug output trace mechanism and 8758has 8759a 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 87692) iASL Compiler/Disassembler: 8770 8771Fixed a problem where if a single file was specified and the file did not 8772exist, no error message was emitted. (Introduced with wildcard support in 8773version 20070917.) 8774 8775---------------------------------------- 877619 September 2007. Summary of changes for version 20070919: 8777 87781) ACPI CA Core Subsystem: 8779 8780Designed and implemented new external interfaces to install and remove 8781handlers for ACPI table-related events. Current events that are defined 8782are 8783LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as 8784they are dynamically loaded and unloaded. See AcpiInstallTableHandler and 8785AcpiRemoveTableHandler. (Lin Ming and Bob Moore) 8786 8787Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag 8788(acpi_serialized option on Linux) could cause some systems to hang during 8789initialization. (Bob Moore) BZ 8171 8790 8791Fixed a problem where objects of certain types (Device, ThermalZone, 8792Processor, PowerResource) can be not found if they are declared and 8793referenced from within the same control method (Lin Ming) BZ 341 8794 8795Example Code and Data Size: These are the sizes for the OS-independent 8796acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8797debug version of the code includes the debug output trace mechanism and 8798has 8799a 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 88092) iASL Compiler/Disassembler: 8810 8811Implemented support to allow multiple files to be compiled/disassembled 8812in 8813a 8814single invocation. This includes command line wildcard support for both 8815the 8816Windows and Unix versions of the compiler. This feature simplifies the 8817disassembly and compilation of multiple ACPI tables in a single 8818directory. 8819 8820---------------------------------------- 882108 May 2007. Summary of changes for version 20070508: 8822 88231) ACPI CA Core Subsystem: 8824 8825Implemented a Microsoft compatibility design change for the handling of 8826the 8827Notify AML operator. Previously, notify handlers were dispatched and 8828executed completely asynchronously in a deferred thread. The new design 8829still executes the notify handlers in a different thread, but the 8830original 8831thread that executed the Notify() now waits at a synchronization point 8832for 8833the notify handler to complete. Some machines depend on a synchronous 8834Notify 8835operator in order to operate correctly. 8836 8837Implemented support to allow Package objects to be passed as method 8838arguments to the external AcpiEvaluateObject interface. Previously, this 8839would return the AE_NOT_IMPLEMENTED exception. This feature had not been 8840implemented since there were no reserved control methods that required it 8841until recently. 8842 8843Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs 8844that 8845contained invalid non-zero values in reserved fields could cause later 8846failures because these fields have meaning in later revisions of the 8847FADT. 8848For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The 8849fields 8850are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.) 8851 8852Fixed a problem where the Global Lock handle was not properly updated if 8853a 8854thread that acquired the Global Lock via executing AML code then 8855attempted 8856to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by 8857Joe 8858Liu. 8859 8860Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list 8861could be corrupted if the interrupt being removed was at the head of the 8862list. Reported by Linn Crosetto. 8863 8864Example Code and Data Size: These are the sizes for the OS-independent 8865acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8866debug version of the code includes the debug output trace mechanism and 8867has 8868a 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---------------------------------------- 887820 March 2007. Summary of changes for version 20070320: 8879 88801) ACPI CA Core Subsystem: 8881 8882Implemented a change to the order of interpretation and evaluation of AML 8883operand objects within the AML interpreter. The interpreter now evaluates 8884operands in the order that they appear in the AML stream (and the 8885corresponding ASL code), instead of in the reverse order (after the 8886entire 8887operand list has been parsed). The previous behavior caused several 8888subtle 8889incompatibilities with the Microsoft AML interpreter as well as being 8890somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov. 8891 8892Implemented a change to the ACPI Global Lock support. All interfaces to 8893the 8894global lock now allow the same thread to acquire the lock multiple times. 8895This affects the AcpiAcquireGlobalLock external interface to the global 8896lock 8897as well as the internal use of the global lock to support AML fields -- a 8898control method that is holding the global lock can now simultaneously 8899access 8900AML fields that require global lock protection. Previously, in both 8901cases, 8902this would have resulted in an AE_ALREADY_ACQUIRED exception. The change 8903to 8904AcpiAcquireGlobalLock is of special interest to drivers for the Embedded 8905Controller. There is no change to the behavior of the AML Acquire 8906operator, 8907as this can already be used to acquire a mutex multiple times by the same 8908thread. BZ 8066. With assistance from Alexey Starikovskiy. 8909 8910Fixed a problem where invalid objects could be referenced in the AML 8911Interpreter after error conditions. During operand evaluation, ensure 8912that 8913the internal "Return Object" field is cleared on error and only valid 8914pointers are stored there. Caused occasional access to deleted objects 8915that 8916resulted in "large reference count" warning messages. Valery Podrezov. 8917 8918Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur 8919on 8920deeply nested control method invocations. BZ 7873, local BZ 487. Valery 8921Podrezov. 8922 8923Fixed an internal problem with the handling of result objects on the 8924interpreter result stack. BZ 7872. Valery Podrezov. 8925 8926Removed obsolete code that handled the case where AML_NAME_OP is the 8927target 8928of a reference (Reference.Opcode). This code was no longer necessary. BZ 89297874. Valery Podrezov. 8930 8931Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This 8932was 8933a 8934remnant from the previously discontinued 16-bit support. 8935 8936Example Code and Data Size: These are the sizes for the OS-independent 8937acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8938debug version of the code includes the debug output trace mechanism and 8939has 8940a 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---------------------------------------- 895026 January 2007. Summary of changes for version 20070126: 8951 89521) ACPI CA Core Subsystem: 8953 8954Added the 2007 copyright to all module headers and signons. This affects 8955virtually every file in the ACPICA core subsystem, the iASL compiler, and 8956the utilities. 8957 8958Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable 8959during a table load. A bad pointer was passed in the case where the DSDT 8960is 8961overridden, causing a fault in this case. 8962 8963Example Code and Data Size: These are the sizes for the OS-independent 8964acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8965debug version of the code includes the debug output trace mechanism and 8966has 8967a 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---------------------------------------- 897715 December 2006. Summary of changes for version 20061215: 8978 89791) ACPI CA Core Subsystem: 8980 8981Support for 16-bit ACPICA has been completely removed since it is no 8982longer 8983necessary and it clutters the code. All 16-bit macros, types, and 8984conditional compiles have been removed, cleaning up and simplifying the 8985code 8986across the entire subsystem. DOS support is no longer needed since the 8987bootable Linux firmware kit is now available. 8988 8989The handler for the Global Lock is now removed during AcpiTerminate to 8990enable a clean subsystem restart, via the implementation of the 8991AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz, 8992HP) 8993 8994Implemented enhancements to the multithreading support within the 8995debugger 8996to enable improved multithreading debugging and evaluation of the 8997subsystem. 8998(Valery Podrezov) 8999 9000Debugger: Enhanced the Statistics/Memory command to emit the total 9001(maximum) 9002memory used during the execution, as well as the maximum memory consumed 9003by 9004each of the various object types. (Valery Podrezov) 9005 9006Example Code and Data Size: These are the sizes for the OS-independent 9007acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9008debug version of the code includes the debug output trace mechanism and 9009has 9010a 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 90202) iASL Compiler/Disassembler and Tools: 9021 9022AcpiExec: Implemented a new option (-m) to display full memory use 9023statistics upon subsystem/program termination. (Valery Podrezov) 9024 9025---------------------------------------- 902609 November 2006. Summary of changes for version 20061109: 9027 90281) ACPI CA Core Subsystem: 9029 9030Optimized the Load ASL operator in the case where the source operand is 9031an 9032operation region. Simply map the operation region memory, instead of 9033performing a bytewise read. (Region must be of type SystemMemory, see 9034below.) 9035 9036Fixed the Load ASL operator for the case where the source operand is a 9037region field. A buffer object is also allowed as the source operand. BZ 9038480 9039 9040Fixed a problem where the Load ASL operator allowed the source operand to 9041be 9042an operation region of any type. It is now restricted to regions of type 9043SystemMemory, as per the ACPI specification. BZ 481 9044 9045Additional cleanup and optimizations for the new Table Manager code. 9046 9047AcpiEnable will now fail if all of the required ACPI tables are not 9048loaded 9049(FADT, FACS, DSDT). BZ 477 9050 9051Added #pragma pack(8/4) to acobject.h to ensure that the structures in 9052this 9053header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been 9054manually optimized to be aligned and will not work if it is byte-packed. 9055 9056Example Code and Data Size: These are the sizes for the OS-independent 9057acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9058debug version of the code includes the debug output trace mechanism and 9059has 9060a 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 90702) iASL Compiler/Disassembler and Tools: 9071 9072Fixed a problem where the presence of the _OSI predefined control method 9073within complex expressions could cause an internal compiler error. 9074 9075AcpiExec: Implemented full region support for multiple address spaces. 9076SpaceId is now part of the REGION object. BZ 429 9077 9078---------------------------------------- 907911 October 2006. Summary of changes for version 20061011: 9080 90811) ACPI CA Core Subsystem: 9082 9083Completed an AML interpreter performance enhancement for control method 9084execution. Previously a 2-pass parse/execution, control methods are now 9085completely parsed and executed in a single pass. This improves overall 9086interpreter performance by ~25%, reduces code size, and reduces CPU stack 9087use. (Valery Podrezov + interpreter changes in version 20051202 that 9088eliminated namespace loading during the pass one parse.) 9089 9090Implemented _CID support for PCI Root Bridge detection. If the _HID does 9091not 9092match the predefined PCI Root Bridge IDs, the _CID list (if present) is 9093now 9094obtained and also checked for an ID match. 9095 9096Implemented additional support for the PCI _ADR execution: upsearch until 9097a 9098device scope is found before executing _ADR. This allows PCI_Config 9099operation regions to be declared locally within control methods 9100underneath 9101PCI device objects. 9102 9103Fixed a problem with a possible race condition between threads executing 9104AcpiWalkNamespace and the AML interpreter. This condition was removed by 9105modifying AcpiWalkNamespace to (by default) ignore all temporary 9106namespace 9107entries created during any concurrent control method execution. An 9108additional namespace race condition is known to exist between 9109AcpiWalkNamespace and the Load/Unload ASL operators and is still under 9110investigation. 9111 9112Restructured the AML ParseLoop function, breaking it into several 9113subfunctions in order to reduce CPU stack use and improve 9114maintainability. 9115(Mikhail Kouzmich) 9116 9117AcpiGetHandle: Fix for parameter validation to detect invalid 9118combinations 9119of prefix handle and pathname. BZ 478 9120 9121Example Code and Data Size: These are the sizes for the OS-independent 9122acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9123debug version of the code includes the debug output trace mechanism and 9124has 9125a 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 91342) iASL Compiler/Disassembler and Tools: 9135 9136Ported the -g option (get local ACPI tables) to the new ACPICA Table 9137Manager 9138to restore original behavior. 9139 9140---------------------------------------- 914127 September 2006. Summary of changes for version 20060927: 9142 91431) ACPI CA Core Subsystem: 9144 9145Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister. 9146These functions now use a spinlock for mutual exclusion and the interrupt 9147level indication flag is not needed. 9148 9149Fixed a problem with the Global Lock where the lock could appear to be 9150obtained before it is actually obtained. The global lock semaphore was 9151inadvertently created with one unit instead of zero units. (BZ 464) 9152Fiodor 9153Suietov. 9154 9155Fixed a possible memory leak and fault in AcpiExResolveObjectToValue 9156during 9157a read from a buffer or region field. (BZ 458) Fiodor Suietov. 9158 9159Example Code and Data Size: These are the sizes for the OS-independent 9160acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9161debug version of the code includes the debug output trace mechanism and 9162has 9163a 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 91732) iASL Compiler/Disassembler and Tools: 9174 9175Fixed a compilation problem with the pre-defined Resource Descriptor 9176field 9177names where an "object does not exist" error could be incorrectly 9178generated 9179if the parent ResourceTemplate pathname places the template within a 9180different namespace scope than the current scope. (BZ 7212) 9181 9182Fixed a problem where the compiler could hang after syntax errors 9183detected 9184in an ElseIf construct. (BZ 453) 9185 9186Fixed a problem with the AmlFilename parameter to the DefinitionBlock() 9187operator. An incorrect output filename was produced when this parameter 9188was 9189a null string (""). Now, the original input filename is used as the AML 9190output filename, with an ".aml" extension. 9191 9192Implemented a generic batch command mode for the AcpiExec utility 9193(execute 9194any AML debugger command) (Valery Podrezov). 9195 9196---------------------------------------- 919712 September 2006. Summary of changes for version 20060912: 9198 91991) ACPI CA Core Subsystem: 9200 9201Enhanced the implementation of the "serialized mode" of the interpreter 9202(enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is 9203specified, instead of creating a serialization semaphore per control 9204method, 9205the interpreter lock is simply no longer released before a blocking 9206operation during control method execution. This effectively makes the AML 9207Interpreter single-threaded. The overhead of a semaphore per-method is 9208eliminated. 9209 9210Fixed a regression where an error was no longer emitted if a control 9211method 9212attempts to create 2 objects of the same name. This once again returns 9213AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism 9214that 9215will dynamically serialize the control method to possible prevent future 9216errors. (BZ 440) 9217 9218Integrated a fix for a problem with PCI Express HID detection in the PCI 9219Config Space setup procedure. (BZ 7145) 9220 9221Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the 9222AcpiHwInitialize function - the FADT registers are now validated when the 9223table is loaded. 9224 9225Added two new warnings during FADT verification - 1) if the FADT is 9226larger 9227than the largest known FADT version, and 2) if there is a mismatch 9228between 9229a 923032-bit block address and the 64-bit X counterpart (when both are non- 9231zero.) 9232 9233Example Code and Data Size: These are the sizes for the OS-independent 9234acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9235debug version of the code includes the debug output trace mechanism and 9236has 9237a 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 92472) iASL Compiler/Disassembler and Tools: 9248 9249Fixed a problem with the implementation of the Switch() operator where 9250the 9251temporary variable was declared too close to the actual Switch, instead 9252of 9253at method level. This could cause a problem if the Switch() operator is 9254within a while loop, causing an error on the second iteration. (BZ 460) 9255 9256Disassembler - fix for error emitted for unknown type for target of scope 9257operator. Now, ignore it and continue. 9258 9259Disassembly of an FADT now verifies the input FADT and reports any errors 9260found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs. 9261 9262Disassembly of raw data buffers with byte initialization data now 9263prefixes 9264each output line with the current buffer offset. 9265 9266Disassembly of ASF! table now includes all variable-length data fields at 9267the end of some of the subtables. 9268 9269The disassembler now emits a comment if a buffer appears to be a 9270ResourceTemplate, but cannot be disassembled as such because the EndTag 9271does 9272not appear at the very end of the buffer. 9273 9274AcpiExec - Added the "-t" command line option to enable the serialized 9275mode 9276of the AML interpreter. 9277 9278---------------------------------------- 927931 August 2006. Summary of changes for version 20060831: 9280 92811) ACPI CA Core Subsystem: 9282 9283Miscellaneous 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, 9289AcpiGetTableByIndex 9290 9291Change for GPE support: when a "wake" GPE is received, all wake GPEs are 9292now 9293immediately disabled to prevent the waking GPE from firing again and to 9294prevent other wake GPEs from interrupting the wake process. 9295 9296Added the AcpiGpeCount global that tracks the number of processed GPEs, 9297to 9298be used for debugging systems with a large number of ACPI interrupts. 9299 9300Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in 9301both the ACPICA headers and the disassembler. 9302 9303Example Code and Data Size: These are the sizes for the OS-independent 9304acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9305debug version of the code includes the debug output trace mechanism and 9306has 9307a 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 93172) iASL Compiler/Disassembler and Tools: 9318 9319Disassembler support for the DMAR ACPI table. 9320 9321---------------------------------------- 932223 August 2006. Summary of changes for version 20060823: 9323 93241) ACPI CA Core Subsystem: 9325 9326The Table Manager component has been completely redesigned and 9327reimplemented. The new design is much simpler, and reduces the overall 9328code 9329and data size of the kernel-resident ACPICA by approximately 5%. Also, it 9330is 9331now possible to obtain the ACPI tables very early during kernel 9332initialization, even before dynamic memory management is initialized. 9333(Alexey Starikovskiy, Fiodor Suietov, Bob Moore) 9334 9335Obsolete ACPICA interfaces: 9336 9337- AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel 9338init 9339time). 9340- AcpiLoadTable: Not needed. 9341- AcpiUnloadTable: Not needed. 9342 9343New ACPICA interfaces: 9344 9345- AcpiInitializeTables: Must be called before the table manager can be 9346used. 9347- AcpiReallocateRootTable: Used to transfer the root table to dynamically 9348allocated memory after it becomes available. 9349- AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI 9350tables 9351in the RSDT/XSDT. 9352 9353Other ACPICA changes: 9354 9355- AcpiGetTableHeader returns the actual mapped table header, not a copy. 9356Use 9357AcpiOsUnmapMemory to free this mapping. 9358- AcpiGetTable returns the actual mapped table. The mapping is managed 9359internally and must not be deleted by the caller. Use of this interface 9360causes no additional dynamic memory allocation. 9361- AcpiFindRootPointer: Support for physical addressing has been 9362eliminated, 9363it appeared to be unused. 9364- The interface to AcpiOsMapMemory has changed to be consistent with the 9365other allocation interfaces. 9366- The interface to AcpiOsGetRootPointer has changed to eliminate 9367unnecessary 9368parameters. 9369- ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on 937064- 9371bit platforms. Was previously 64 bits on all platforms. 9372- The interface to the ACPI Global Lock acquire/release macros have 9373changed 9374slightly since ACPICA no longer keeps a local copy of the FACS with a 9375constructed pointer to the actual global lock. 9376 9377Porting to the new table manager: 9378 9379- AcpiInitializeTables: Must be called once, and can be called anytime 9380during the OS initialization process. It allows the host to specify an 9381area 9382of memory to be used to store the internal version of the RSDT/XSDT (root 9383table). This allows the host to access ACPI tables before memory 9384management 9385is initialized and running. 9386- AcpiReallocateRootTable: Can be called after memory management is 9387running 9388to copy the root table to a dynamically allocated array, freeing up the 9389scratch memory specified in the call to AcpiInitializeTables. 9390- AcpiSubsystemInitialize: This existing interface is independent of the 9391Table Manager, and does not have to be called before the Table Manager 9392can 9393be 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 9395the 9396actbl.h and actbl1.h header files and may require changes to existing 9397code. 9398For example, bitfields have been completely removed because of their lack 9399of 9400portability across C compilers. 9401- Update interfaces to the Global Lock acquire/release macros if local 9402versions are used. (see acwin.h) 9403 9404Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c 9405 9406New files: tbfind.c 9407 9408Example Code and Data Size: These are the sizes for the OS-independent 9409acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9410debug version of the code includes the debug output trace mechanism and 9411has 9412a 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 94222) iASL Compiler/Disassembler and Tools: 9423 9424No changes for this release. 9425 9426---------------------------------------- 942721 July 2006. Summary of changes for version 20060721: 9428 94291) ACPI CA Core Subsystem: 9430 9431The full source code for the ASL test suite used to validate the iASL 9432compiler and the ACPICA core subsystem is being released with the ACPICA 9433source for the first time. The source is contained in a separate package 9434and 9435consists of over 1100 files that exercise all ASL/AML operators. The 9436package 9437should appear on the Intel/ACPI web site shortly. (Valery Podrezov, 9438Fiodor 9439Suietov) 9440 9441Completed a new design and implementation for support of the ACPI Global 9442Lock. On the OS side, the global lock is now treated as a standard AML 9443mutex. Previously, multiple OS threads could "acquire" the global lock 9444simultaneously. However, this could cause the BIOS to be starved out of 9445the 9446lock - especially in cases such as the Embedded Controller driver where 9447there is a tight coupling between the OS and the BIOS. 9448 9449Implemented an optimization for the ACPI Global Lock interrupt mechanism. 9450The Global Lock interrupt handler no longer queues the execution of a 9451separate thread to signal the global lock semaphore. Instead, the 9452semaphore 9453is signaled directly from the interrupt handler. 9454 9455Implemented support within the AML interpreter for package objects that 9456contain a larger AML length (package list length) than the package 9457element 9458count. In this case, the length of the package is truncated to match the 9459package element count. Some BIOS code apparently modifies the package 9460length 9461on the fly, and this change supports this behavior. Provides 9462compatibility 9463with the MS AML interpreter. (With assistance from Fiodor Suietov) 9464 9465Implemented a temporary fix for the BankValue parameter of a Bank Field 9466to 9467support all constant values, now including the Zero and One opcodes. 9468Evaluation of this parameter must eventually be converted to a full 9469TermArg 9470evaluation. A not-implemented error is now returned (temporarily) for 9471non- 9472constant values for this parameter. 9473 9474Fixed problem reports (Fiodor Suietov) integrated: 9475- Fix for premature object deletion after CopyObject on Operation Region 9476(BZ 9477350) 9478 9479Example Code and Data Size: These are the sizes for the OS-independent 9480acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9481debug version of the code includes the debug output trace mechanism and 9482has 9483a 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 94932) iASL Compiler/Disassembler and Tools: 9494 9495No changes for this release. 9496 9497---------------------------------------- 949807 July 2006. Summary of changes for version 20060707: 9499 95001) ACPI CA Core Subsystem: 9501 9502Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers 9503that do not allow the initialization of address pointers within packed 9504structures - even though the hardware itself may support misaligned 9505transfers. Some of the debug data structures are packed by default to 9506minimize size. 9507 9508Added an error message for the case where AcpiOsGetThreadId() returns 9509zero. 9510A non-zero value is required by the core ACPICA code to ensure the proper 9511operation of AML mutexes and recursive control methods. 9512 9513The DSDT is now the only ACPI table that determines whether the AML 9514interpreter is in 32-bit or 64-bit mode. Not really a functional change, 9515but 9516the hooks for per-table 32/64 switching have been removed from the code. 9517A 9518clarification to the ACPI specification is forthcoming in ACPI 3.0B. 9519 9520Fixed a possible leak of an OwnerID in the error path of 9521AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID 9522deletion to a single place in AcpiTbUninstallTable to correct possible 9523leaks 9524when using the AcpiTbDeleteTablesByType interface (with assistance from 9525Lance Ortiz.) 9526 9527Fixed a problem with Serialized control methods where the semaphore 9528associated with the method could be over-signaled after multiple method 9529invocations. 9530 9531Fixed two issues with the locking of the internal namespace data 9532structure. 9533Both the Unload() operator and AcpiUnloadTable interface now lock the 9534namespace during the namespace deletion associated with the table unload 9535(with assistance from Linn Crosetto.) 9536 9537Fixed problem reports (Valery Podrezov) integrated: 9538- Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426) 9539 9540Fixed 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 9544375) 9545- Possible memory leak, Notify sub-objects of Processor, Power, 9546ThermalZone 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 9551Handler (BZ (380) 9552- AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type 9553loaded 9554(BZ 381) 9555 9556Example Code and Data Size: These are the sizes for the OS-independent 9557acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9558debug version of the code includes the debug output trace mechanism and 9559has 9560a 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 95702) iASL Compiler/Disassembler and Tools: 9571 9572Fixed problem reports: 9573Compiler segfault when ASL contains a long (>1024) String declaration (BZ 9574436) 9575 9576---------------------------------------- 957723 June 2006. Summary of changes for version 20060623: 9578 95791) ACPI CA Core Subsystem: 9580 9581Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This 9582allows the type to be customized to the host OS for improved efficiency 9583(since a spinlock is usually a very small object.) 9584 9585Implemented support for "ignored" bits in the ACPI registers. According 9586to 9587the ACPI specification, these bits should be preserved when writing the 9588registers via a read/modify/write cycle. There are 3 bits preserved in 9589this 9590manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11]. 9591 9592Implemented the initial deployment of new OSL mutex interfaces. Since 9593some 9594host operating systems have separate mutex and semaphore objects, this 9595feature was requested. The base code now uses mutexes (and the new mutex 9596interfaces) wherever a binary semaphore was used previously. However, for 9597the current release, the mutex interfaces are defined as macros to map 9598them 9599to the existing semaphore interfaces. Therefore, no OSL changes are 9600required 9601at this time. (See acpiosxf.h) 9602 9603Fixed several problems with the support for the control method SyncLevel 9604parameter. The SyncLevel now works according to the ACPI specification 9605and 9606in concert with the Mutex SyncLevel parameter, since the current 9607SyncLevel 9608is a property of the executing thread. Mutual exclusion for control 9609methods 9610is now implemented with a mutex instead of a semaphore. 9611 9612Fixed three instances of the use of the C shift operator in the bitfield 9613support code (exfldio.c) to avoid the use of a shift value larger than 9614the 9615target data width. The behavior of C compilers is undefined in this case 9616and 9617can cause unpredictable results, and therefore the case must be detected 9618and 9619avoided. (Fiodor Suietov) 9620 9621Added an info message whenever an SSDT or OEM table is loaded dynamically 9622via the Load() or LoadTable() ASL operators. This should improve 9623debugging 9624capability since it will show exactly what tables have been loaded 9625(beyond 9626the tables present in the RSDT/XSDT.) 9627 9628Example Code and Data Size: These are the sizes for the OS-independent 9629acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9630debug version of the code includes the debug output trace mechanism and 9631has 9632a 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 96422) iASL Compiler/Disassembler and Tools: 9643 9644No changes for this release. 9645 9646---------------------------------------- 964708 June 2006. Summary of changes for version 20060608: 9648 96491) ACPI CA Core Subsystem: 9650 9651Converted the locking mutex used for the ACPI hardware to a spinlock. 9652This 9653change should eliminate all problems caused by attempting to acquire a 9654semaphore at interrupt level, and it means that all ACPICA external 9655interfaces that directly access the ACPI hardware can be safely called 9656from 9657interrupt level. OSL code that implements the semaphore interfaces should 9658be 9659able to eliminate any workarounds for being called at interrupt level. 9660 9661Fixed a regression introduced in 20060526 where the ACPI device 9662initialization could be prematurely aborted with an AE_NOT_FOUND if a 9663device 9664did not have an optional _INI method. 9665 9666Fixed an IndexField issue where a write to the Data Register should be 9667limited in size to the AccessSize (width) of the IndexField itself. (BZ 9668433, 9669Fiodor Suietov) 9670 9671Fixed problem reports (Valery Podrezov) integrated: 9672- Allow store of ThermalZone objects to Debug object (BZ 5369/5370) 9673 9674Fixed problem reports (Fiodor Suietov) integrated: 9675- AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364) 9676 9677Removed four global mutexes that were obsolete and were no longer being 9678used. 9679 9680Example Code and Data Size: These are the sizes for the OS-independent 9681acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9682debug version of the code includes the debug output trace mechanism and 9683has 9684a 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 96942) iASL Compiler/Disassembler and Tools: 9695 9696Fixed a fault when using -g option (get tables from registry) on Windows 9697machines. 9698 9699Fixed 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 9702Suietov) 9703- Global table revision override (-r) is ignored (BZ 413) 9704 9705---------------------------------------- 970626 May 2006. Summary of changes for version 20060526: 9707 97081) ACPI CA Core Subsystem: 9709 9710Restructured, flattened, and simplified the internal interfaces for 9711namespace object evaluation - resulting in smaller code, less CPU stack 9712use, 9713and fewer interfaces. (With assistance from Mikhail Kouzmich) 9714 9715Fixed a problem with the CopyObject operator where the first parameter 9716was 9717not typed correctly for the parser, interpreter, compiler, and 9718disassembler. 9719Caused various errors and unexpected behavior. 9720 9721Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits 9722produced incorrect results with some C compilers. Since the behavior of C 9723compilers when the shift value is larger than the datatype width is 9724apparently not well defined, the interpreter now detects this condition 9725and 9726simply returns zero as expected in all such cases. (BZ 395) 9727 9728Fixed 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 9732Fixed problem reports (Fiodor Suietov) integrated: 9733- AcpiTerminate doesn't free debug memory allocation list objects (BZ 9734355) 9735- After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ 9736356) 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 9744365) 9745- Status of the Global Initialization Handler call not used (BZ 366) 9746- Incorrect object parameter to Global Initialization Handler (BZ 367) 9747 9748Example Code and Data Size: These are the sizes for the OS-independent 9749acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9750debug version of the code includes the debug output trace mechanism and 9751has 9752a 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 97622) iASL Compiler/Disassembler and Tools: 9763 9764Modified the parser to allow the names IO, DMA, and IRQ to be used as 9765namespace identifiers with no collision with existing resource descriptor 9766macro names. This provides compatibility with other ASL compilers and is 9767most useful for disassembly/recompilation of existing tables without 9768parse 9769errors. (With assistance from Thomas Renninger) 9770 9771Disassembler: fixed an incorrect disassembly problem with the 9772DataTableRegion and CopyObject operators. Fixed a possible fault during 9773disassembly of some Alias operators. 9774 9775---------------------------------------- 977612 May 2006. Summary of changes for version 20060512: 9777 97781) ACPI CA Core Subsystem: 9779 9780Replaced the AcpiOsQueueForExecution interface with a new interface named 9781AcpiOsExecute. The major difference is that the new interface does not 9782have 9783a Priority parameter, this appeared to be useless and has been replaced 9784by 9785a 9786Type parameter. The Type tells the host what type of execution is being 9787requested, such as global lock handler, notify handler, GPE handler, etc. 9788This allows the host to queue and execute the request as appropriate for 9789the 9790request type, possibly using different work queues and different 9791priorities 9792for the various request types. This enables fixes for multithreading 9793deadlock problems such as BZ #5534, and will require changes to all 9794existing 9795OS interface layers. (Alexey Starikovskiy and Bob Moore) 9796 9797Fixed a possible memory leak associated with the support for the so- 9798called 9799"implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor 9800Suietov) 9801 9802Fixed a problem with the Load() operator where a table load from an 9803operation region could overwrite an internal table buffer by up to 7 9804bytes 9805and cause alignment faults on IPF systems. (With assistance from Luming 9806Yu) 9807 9808Example Code and Data Size: These are the sizes for the OS-independent 9809acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9810debug version of the code includes the debug output trace mechanism and 9811has 9812a 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 98232) iASL Compiler/Disassembler and Tools: 9824 9825Disassembler: Implemented support to cross reference the internal 9826namespace 9827and automatically generate ASL External() statements for symbols not 9828defined 9829within the current table being disassembled. This will simplify the 9830disassembly and recompilation of interdependent tables such as SSDTs 9831since 9832these statements will no longer have to be added manually. 9833 9834Disassembler: Implemented experimental support to automatically detect 9835invocations of external control methods and generate appropriate 9836External() 9837statements. This is problematic because the AML cannot be correctly 9838parsed 9839until the number of arguments for each control method is known. 9840Currently, 9841standalone method invocations and invocations as the source operand of a 9842Store() statement are supported. 9843 9844Disassembler: Implemented support for the ASL pseudo-operators LNotEqual, 9845LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()), 9846LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code 9847more readable and likely closer to the original ASL source. 9848 9849---------------------------------------- 985021 April 2006. Summary of changes for version 20060421: 9851 98521) ACPI CA Core Subsystem: 9853 9854Removed a device initialization optimization introduced in 20051216 where 9855the _STA method was not run unless an _INI was also present for the same 9856device. This optimization could cause problems because it could allow 9857_INI 9858methods to be run within a not-present device subtree. (If a not-present 9859device had no _INI, _STA would not be run, the not-present status would 9860not 9861be discovered, and the children of the device would be incorrectly 9862traversed.) 9863 9864Implemented a new _STA optimization where namespace subtrees that do not 9865contain _INI are identified and ignored during device initialization. 9866Selectively running _STA can significantly improve boot time on large 9867machines (with assistance from Len Brown.) 9868 9869Implemented support for the device initialization case where the returned 9870_STA flags indicate a device not-present but functioning. In this case, 9871_INI 9872is not run, but the device children are examined for presence, as per the 9873ACPI specification. 9874 9875Implemented an additional change to the IndexField support in order to 9876conform to MS behavior. The value written to the Index Register is not 9877simply a byte offset, it is a byte offset in units of the access width of 9878the parent Index Field. (Fiodor Suietov) 9879 9880Defined and deployed a new OSL interface, AcpiOsValidateAddress. This 9881interface is called during the creation of all AML operation regions, and 9882allows the host OS to exert control over what addresses it will allow the 9883AML code to access. Operation Regions whose addresses are disallowed will 9884cause a runtime exception when they are actually accessed (will not 9885affect 9886or abort table loading.) See oswinxf or osunixxf for an example 9887implementation. 9888 9889Defined and deployed a new OSL interface, AcpiOsValidateInterface. This 9890interface allows the host OS to match the various "optional" 9891interface/behavior strings for the _OSI predefined control method as 9892appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf 9893for an example implementation. 9894 9895Restructured and corrected various problems in the exception handling 9896code 9897paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod 9898(with assistance from Takayoshi Kochi.) 9899 9900Modified the Linux source converter to ignore quoted string literals 9901while 9902converting identifiers from mixed to lower case. This will correct 9903problems 9904with the disassembler and other areas where such strings must not be 9905modified. 9906 9907The ACPI_FUNCTION_* macros no longer require quotes around the function 9908name. This allows the Linux source converter to convert the names, now 9909that 9910the converter ignores quoted strings. 9911 9912Example Code and Data Size: These are the sizes for the OS-independent 9913acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9914debug version of the code includes the debug output trace mechanism and 9915has 9916a 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 99272) iASL Compiler/Disassembler and Tools: 9928 9929Implemented 3 new warnings for iASL, and implemented multiple warning 9930levels 9931(w2 flag). 9932 99331) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is 9934not 9935WAIT_FOREVER (0xFFFF) and the code does not examine the return value to 9936check for the possible timeout, a warning is issued. 9937 99382) Useless operators: If an ASL operator does not specify an optional 9939target 9940operand and it also does not use the function return value from the 9941operator, a warning is issued since the operator effectively does 9942nothing. 9943 99443) Unreferenced objects: If a namespace object is created, but never 9945referenced, a warning is issued. This is a warning level 2 since there 9946are 9947cases where this is ok, such as when a secondary table is loaded that 9948uses 9949the unreferenced objects. Even so, care is taken to only flag objects 9950that 9951don'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 9953expected that the OS will invoke them. 9954 9955---------------------------------------- 995631 March 2006. Summary of changes for version 20060331: 9957 99581) ACPI CA Core Subsystem: 9959 9960Implemented header file support for the following additional ACPI tables: 9961ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this 9962support, 9963all current and known ACPI tables are now defined in the ACPICA headers 9964and 9965are available for use by device drivers and other software. 9966 9967Implemented support to allow tables that contain ACPI names with invalid 9968characters to be loaded. Previously, this would cause the table load to 9969fail, but since there are several known cases of such tables on existing 9970machines, this change was made to enable ACPI support for them. Also, 9971this 9972matches the behavior of the Microsoft ACPI implementation. 9973 9974Fixed a couple regressions introduced during the memory optimization in 9975the 997620060317 release. The namespace node definition required additional 9977reorganization and an internal datatype that had been changed to 8-bit 9978was 9979restored to 32-bit. (Valery Podrezov) 9980 9981Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState 9982could be passed through to AcpiOsReleaseObject which is unexpected. Such 9983null pointers are now trapped and ignored, matching the behavior of the 9984previous implementation before the deployment of AcpiOsReleaseObject. 9985(Valery Podrezov, Fiodor Suietov) 9986 9987Fixed a memory mapping leak during the deletion of a SystemMemory 9988operation 9989region where a cached memory mapping was not deleted. This became a 9990noticeable problem for operation regions that are defined within 9991frequently 9992used control methods. (Dana Meyers) 9993 9994Reorganized the ACPI table header files into two main files: one for the 9995ACPI tables consumed by the ACPICA core, and another for the 9996miscellaneous 9997ACPI tables that are consumed by the drivers and other software. The 9998various 9999FADT definitions were merged into one common section and three different 10000tables (ACPI 1.0, 1.0+, and 2.0) 10001 10002Example Code and Data Size: These are the sizes for the OS-independent 10003acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 10004debug version of the code includes the debug output trace mechanism and 10005has 10006a 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 100162) iASL Compiler/Disassembler and Tools: 10017 10018Disassembler: Implemented support to decode and format all non-AML ACPI 10019tables (tables other than DSDTs and SSDTs.) This includes the new tables 10020added to the ACPICA headers, therefore all current and known ACPI tables 10021are 10022supported. 10023 10024Disassembler: The change to allow ACPI names with invalid characters also 10025enables the disassembly of such tables. Invalid characters within names 10026are 10027changed to '*' to make the name printable; the iASL compiler will still 10028generate an error for such names, however, since this is an invalid ACPI 10029character. 10030 10031Implemented an option for AcpiXtract (-a) to extract all tables found in 10032the 10033input file. The default invocation extracts only the DSDTs and SSDTs. 10034 10035Fixed a couple of gcc generation issues for iASL and AcpiExec and added a 10036makefile for the AcpiXtract utility. 10037 10038---------------------------------------- 1003917 March 2006. Summary of changes for version 20060317: 10040 100411) ACPI CA Core Subsystem: 10042 10043Implemented the use of a cache object for all internal namespace nodes. 10044Since there are about 1000 static nodes in a typical system, this will 10045decrease memory use for cache implementations that minimize per- 10046allocation 10047overhead (such as a slab allocator.) 10048 10049Removed the reference count mechanism for internal namespace nodes, since 10050it 10051was deemed unnecessary. This reduces the size of each namespace node by 10052about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit 10053case, 10054and 32 bytes for the 64-bit case. 10055 10056Optimized several internal data structures to reduce object size on 64- 10057bit 10058platforms by packing data within the 64-bit alignment. This includes the 10059frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static 10060instances corresponding to the namespace objects. 10061 10062Added two new strings for the predefined _OSI method: "Windows 2001.1 10063SP1" 10064and "Windows 2006". 10065 10066Split the allocation tracking mechanism out to a separate file, from 10067utalloc.c to uttrack.c. This mechanism appears to be only useful for 10068application-level code. Kernels may wish to not include uttrack.c in 10069distributions. 10070 10071Removed all remnants of the obsolete ACPI_REPORT_* macros and the 10072associated 10073code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING 10074macros.) 10075 10076Code and Data Size: These are the sizes for the acpica.lib produced by 10077the 10078Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any 10079ACPI 10080driver or OSPM code. The debug version of the code includes the debug 10081output 10082trace mechanism and has a much larger code and data size. Note that these 10083values will vary depending on the efficiency of the compiler and the 10084compiler 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 100942) iASL Compiler/Disassembler and Tools: 10095 10096Implemented an ANSI C version of the acpixtract utility. This version 10097will 10098automatically extract the DSDT and all SSDTs from the input acpidump text 10099file and dump the binary output to separate files. It can also display a 10100summary of the input file including the headers for each table found and 10101will extract any single ACPI table, with any signature. (See 10102source/tools/acpixtract) 10103 10104---------------------------------------- 1010510 March 2006. Summary of changes for version 20060310: 10106 101071) ACPI CA Core Subsystem: 10108 10109Tagged all external interfaces to the subsystem with the new 10110ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to 10111assist 10112kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL 10113macro. The default definition is NULL. 10114 10115Added the ACPI_THREAD_ID type for the return value from 10116AcpiOsGetThreadId. 10117This allows the host to define this as necessary to simplify kernel 10118integration. The default definition is ACPI_NATIVE_UINT. 10119 10120Fixed two interpreter problems related to error processing, the deletion 10121of 10122objects, and placing invalid pointers onto the internal operator result 10123stack. BZ 6028, 6151 (Valery Podrezov) 10124 10125Increased the reference count threshold where a warning is emitted for 10126large 10127reference counts in order to eliminate unnecessary warnings on systems 10128with 10129large namespaces (especially 64-bit.) Increased the value from 0x400 to 101300x800. 10131 10132Due to universal disagreement as to the meaning of the 'c' in the 10133calloc() 10134function, the ACPI_MEM_CALLOCATE macro has been renamed to 10135ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'. 10136ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and 10137ACPI_FREE. 10138 10139Code and Data Size: These are the sizes for the acpica.lib produced by 10140the 10141Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any 10142ACPI 10143driver or OSPM code. The debug version of the code includes the debug 10144output 10145trace mechanism and has a much larger code and data size. Note that these 10146values will vary depending on the efficiency of the compiler and the 10147compiler 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 101572) iASL Compiler/Disassembler: 10158 10159Disassembler: implemented support for symbolic resource descriptor 10160references. If a CreateXxxxField operator references a fixed offset 10161within 10162a 10163resource descriptor, a name is assigned to the descriptor and the offset 10164is 10165translated to the appropriate resource tag and pathname. The addition of 10166this support brings the disassembled code very close to the original ASL 10167source code and helps eliminate run-time errors when the disassembled 10168code 10169is modified (and recompiled) in such a way as to invalidate the original 10170fixed offsets. 10171 10172Implemented support for a Descriptor Name as the last parameter to the 10173ASL 10174Register() macro. This parameter was inadvertently left out of the ACPI 10175specification, and will be added for ACPI 3.0b. 10176 10177Fixed 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 10180Fixed a problem with the error message that occurs when an invalid string 10181is 10182used for a _HID object (such as one with an embedded asterisk: 10183"*PNP010A".) 10184The correct message is now displayed. 10185 10186---------------------------------------- 1018717 February 2006. Summary of changes for version 20060217: 10188 101891) ACPI CA Core Subsystem: 10190 10191Implemented a change to the IndexField support to match the behavior of 10192the 10193Microsoft AML interpreter. The value written to the Index register is now 10194a 10195byte offset, no longer an index based upon the width of the Data 10196register. 10197This should fix IndexField problems seen on some machines where the Data 10198register is not exactly one byte wide. The ACPI specification will be 10199clarified on this point. 10200 10201Fixed a problem where several resource descriptor types could overrun the 10202internal descriptor buffer due to size miscalculation: VendorShort, 10203VendorLong, and Interrupt. This was noticed on IA64 machines, but could 10204affect all platforms. 10205 10206Fixed a problem where individual resource descriptors were misaligned 10207within 10208the internal buffer, causing alignment faults on IA64 platforms. 10209 10210Code and Data Size: These are the sizes for the acpica.lib produced by 10211the 10212Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any 10213ACPI 10214driver or OSPM code. The debug version of the code includes the debug 10215output 10216trace mechanism and has a much larger code and data size. Note that these 10217values will vary depending on the efficiency of the compiler and the 10218compiler 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 102282) iASL Compiler/Disassembler: 10229 10230Implemented support for new reserved names: _WDG and _WED are Microsoft 10231extensions for Windows Instrumentation Management, _TDL is a new ACPI- 10232defined method (Throttling Depth Limit.) 10233 10234Fixed a problem where a zero-length VendorShort or VendorLong resource 10235descriptor was incorrectly emitted as a descriptor of length one. 10236 10237---------------------------------------- 1023810 February 2006. Summary of changes for version 20060210: 10239 102401) ACPI CA Core Subsystem: 10241 10242Removed a couple of extraneous ACPI_ERROR messages that appeared during 10243normal execution. These became apparent after the conversion from 10244ACPI_DEBUG_PRINT. 10245 10246Fixed a problem where the CreateField operator could hang if the BitIndex 10247or 10248NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359) 10249 10250Fixed a problem where a DeRefOf operation on a buffer object incorrectly 10251failed with an exception. This also fixes a couple of related RefOf and 10252DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387) 10253 10254Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead 10255of 10256AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov, 10257BZ 102585480) 10259 10260Implemented a memory cleanup at the end of the execution of each 10261iteration 10262of an AML While() loop, preventing the accumulation of outstanding 10263objects. 10264(Valery Podrezov, BZ 5427) 10265 10266Eliminated a chunk of duplicate code in the object resolution code. 10267(Valery 10268Podrezov, BZ 5336) 10269 10270Fixed several warnings during the 64-bit code generation. 10271 10272The AcpiSrc source code conversion tool now inserts one line of 10273whitespace 10274after an if() statement that is followed immediately by a comment, 10275improving 10276readability of the Linux code. 10277 10278Code and Data Size: The current and previous library sizes for the core 10279subsystem are shown below. These are the code and data sizes for the 10280acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 10281These 10282values do not include any ACPI driver or OSPM code. The debug version of 10283the 10284code includes the debug output trace mechanism and has a much larger code 10285and data size. Note that these values will vary depending on the 10286efficiency 10287of 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 102972) iASL Compiler/Disassembler: 10298 10299Fixed a problem with the disassembly of a BankField operator with a 10300complex 10301expression for the BankValue parameter. 10302 10303---------------------------------------- 1030427 January 2006. Summary of changes for version 20060127: 10305 103061) ACPI CA Core Subsystem: 10307 10308Implemented support in the Resource Manager to allow unresolved 10309namestring 10310references within resource package objects for the _PRT method. This 10311support 10312is in addition to the previously implemented unresolved reference support 10313within the AML parser. If the interpreter slack mode is enabled, these 10314unresolved references will be passed through to the caller as a NULL 10315package 10316entry. 10317 10318Implemented and deployed new macros and functions for error and warning 10319messages across the subsystem. These macros are simpler and generate less 10320code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION, 10321ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older 10322macros remain defined to allow ACPI drivers time to migrate to the new 10323macros. 10324 10325Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of 10326the 10327Acquire/Release Lock OSL interfaces. 10328 10329Fixed a problem where Alias ASL operators are sometimes not correctly 10330resolved, in both the interpreter and the iASL compiler. 10331 10332Fixed several problems with the implementation of the 10333ConcatenateResTemplate 10334ASL operator. As per the ACPI specification, zero length buffers are now 10335treated as a single EndTag. One-length buffers always cause a fatal 10336exception. Non-zero length buffers that do not end with a full 2-byte 10337EndTag 10338cause a fatal exception. 10339 10340Fixed a possible structure overwrite in the AcpiGetObjectInfo external 10341interface. (With assistance from Thomas Renninger) 10342 10343Code and Data Size: The current and previous library sizes for the core 10344subsystem are shown below. These are the code and data sizes for the 10345acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 10346These 10347values do not include any ACPI driver or OSPM code. The debug version of 10348the 10349code includes the debug output trace mechanism and has a much larger code 10350and data size. Note that these values will vary depending on the 10351efficiency 10352of 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 103622) iASL Compiler/Disassembler: 10363 10364Fixed an internal error that was generated for any forward references to 10365ASL 10366Alias objects. 10367 10368---------------------------------------- 1036913 January 2006. Summary of changes for version 20060113: 10370 103711) ACPI CA Core Subsystem: 10372 10373Added 2006 copyright to all module headers and signons. This affects 10374virtually every file in the ACPICA core subsystem, iASL compiler, and the 10375utilities. 10376 10377Enhanced the ACPICA error reporting in order to simplify user migration 10378to 10379the non-debug version of ACPICA. Replaced all instances of the 10380ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN 10381debug 10382levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros, 10383respectively. This preserves all error and warning messages in the non- 10384debug 10385version of the ACPICA code (this has been referred to as the "debug lite" 10386option.) Over 200 cases were converted to create a total of over 380 10387error/warning messages across the ACPICA code. This increases the code 10388and 10389data size of the default non-debug version of the code somewhat (about 1039013K), 10391but all error/warning reporting may be disabled if desired (and code 10392eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time 10393configuration option. The size of the debug version of ACPICA remains 10394about 10395the same. 10396 10397Fixed a memory leak within the AML Debugger "Set" command. One object was 10398not properly deleted for every successful invocation of the command. 10399 10400Code and Data Size: The current and previous library sizes for the core 10401subsystem are shown below. These are the code and data sizes for the 10402acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 10403These 10404values do not include any ACPI driver or OSPM code. The debug version of 10405the 10406code includes the debug output trace mechanism and has a much larger code 10407and data size. Note that these values will vary depending on the 10408efficiency 10409of 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 104192) iASL Compiler/Disassembler: 10420 10421The compiler now officially supports the ACPI 3.0a specification that was 10422released on December 30, 2005. (Specification is available at 10423www.acpi.info) 10424 10425---------------------------------------- 1042616 December 2005. Summary of changes for version 20051216: 10427 104281) ACPI CA Core Subsystem: 10429 10430Implemented optional support to allow unresolved names within ASL Package 10431objects. A null object is inserted in the package when a named reference 10432cannot be located in the current namespace. Enabled via the interpreter 10433slack flag, this should eliminate AE_NOT_FOUND exceptions seen on 10434machines 10435that contain such code. 10436 10437Implemented an optimization to the initialization sequence that can 10438improve 10439boot time. During ACPI device initialization, the _STA method is now run 10440if 10441and only if the _INI method exists. The _STA method is used to determine 10442if 10443the device is present; An _INI can only be run if _STA returns present, 10444but 10445it is a waste of time to run the _STA method if the _INI does not exist. 10446(Prototype and assistance from Dong Wei) 10447 10448Implemented use of the C99 uintptr_t for the pointer casting macros if it 10449is 10450available in the current compiler. Otherwise, the default (void *) cast 10451is 10452used as before. 10453 10454Fixed some possible memory leaks found within the execution path of the 10455Break, Continue, If, and CreateField operators. (Valery Podrezov) 10456 10457Fixed a problem introduced in the 20051202 release where an exception is 10458generated during method execution if a control method attempts to declare 10459another method. 10460 10461Moved resource descriptor string constants that are used by both the AML 10462disassembler and AML debugger to the common utilities directory so that 10463these components are independent. 10464 10465Implemented support in the AcpiExec utility (-e switch) to globally 10466ignore 10467exceptions during control method execution (method is not aborted.) 10468 10469Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix 10470generation. 10471 10472Code and Data Size: The current and previous library sizes for the core 10473subsystem are shown below. These are the code and data sizes for the 10474acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 10475These 10476values do not include any ACPI driver or OSPM code. The debug version of 10477the 10478code includes the debug output trace mechanism and has a much larger code 10479and data size. Note that these values will vary depending on the 10480efficiency 10481of 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 104912) iASL Compiler/Disassembler: 10492 10493Fixed a problem where a CPU stack overflow fault could occur if a 10494recursive 10495method call was made from within a Return statement. 10496 10497---------------------------------------- 1049802 December 2005. Summary of changes for version 20051202: 10499 105001) ACPI CA Core Subsystem: 10501 10502Modified the parsing of control methods to no longer create namespace 10503objects during the first pass of the parse. Objects are now created only 10504during the execute phase, at the moment the namespace creation operator 10505is 10506encountered in the AML (Name, OperationRegion, CreateByteField, etc.) 10507This 10508should eliminate ALREADY_EXISTS exceptions seen on some machines where 10509reentrant control methods are protected by an AML mutex. The mutex will 10510now 10511correctly block multiple threads from attempting to create the same 10512object 10513more than once. 10514 10515Increased the number of available Owner Ids for namespace object tracking 10516from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen 10517on 10518some machines with a large number of ACPI tables (either static or 10519dynamic). 10520 10521Fixed a problem with the AcpiExec utility where a fault could occur when 10522the 10523-b switch (batch mode) is used. 10524 10525Enhanced the namespace dump routine to output the owner ID for each 10526namespace object. 10527 10528Code and Data Size: The current and previous library sizes for the core 10529subsystem are shown below. These are the code and data sizes for the 10530acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 10531These 10532values do not include any ACPI driver or OSPM code. The debug version of 10533the 10534code includes the debug output trace mechanism and has a much larger code 10535and data size. Note that these values will vary depending on the 10536efficiency 10537of 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 105472) iASL Compiler/Disassembler: 10548 10549Fixed a parse error during compilation of certain Switch/Case constructs. 10550To 10551simplify the parse, the grammar now allows for multiple Default 10552statements 10553and this error is now detected and flagged during the analysis phase. 10554 10555Disassembler: The disassembly now includes the contents of the original 10556table header within a comment at the start of the file. This includes the 10557name and version of the original ASL compiler. 10558 10559---------------------------------------- 1056017 November 2005. Summary of changes for version 20051117: 10561 105621) ACPI CA Core Subsystem: 10563 10564Fixed a problem in the AML parser where the method thread count could be 10565decremented below zero if any errors occurred during the method parse 10566phase. 10567This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some 10568machines. 10569This also fixed a related regression with the mechanism that detects and 10570corrects methods that cannot properly handle reentrancy (related to the 10571deployment of the new OwnerId mechanism.) 10572 10573Eliminated the pre-parsing of control methods (to detect errors) during 10574table load. Related to the problem above, this was causing unwind issues 10575if 10576any errors occurred during the parse, and it seemed to be overkill. A 10577table 10578load should not be aborted if there are problems with any single control 10579method, thus rendering this feature rather pointless. 10580 10581Fixed a problem with the new table-driven resource manager where an 10582internal 10583buffer overflow could occur for small resource templates. 10584 10585Implemented a new external interface, AcpiGetVendorResource. This 10586interface 10587will find and return a vendor-defined resource descriptor within a _CRS 10588or 10589_PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn 10590Helgaas. 10591 10592Removed the length limit (200) on string objects as per the upcoming ACPI 105933.0A specification. This affects the following areas of the interpreter: 105941) 10595any implicit conversion of a Buffer to a String, 2) a String object 10596result 10597of the ASL Concatentate operator, 3) the String object result of the ASL 10598ToString operator. 10599 10600Fixed a problem in the Windows OS interface layer (OSL) where a 10601WAIT_FOREVER 10602on a semaphore object would incorrectly timeout. This allows the 10603multithreading features of the AcpiExec utility to work properly under 10604Windows. 10605 10606Updated the Linux makefiles for the iASL compiler and AcpiExec to include 10607the recently added file named "utresrc.c". 10608 10609Code and Data Size: The current and previous library sizes for the core 10610subsystem are shown below. These are the code and data sizes for the 10611acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 10612These 10613values do not include any ACPI driver or OSPM code. The debug version of 10614the 10615code includes the debug output trace mechanism and has a much larger code 10616and data size. Note that these values will vary depending on the 10617efficiency 10618of 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 106282) iASL Compiler/Disassembler: 10629 10630Removed the limit (200) on string objects as per the upcoming ACPI 3.0A 10631specification. For the iASL compiler, this means that string literals 10632within 10633the source ASL can be of any length. 10634 10635Enhanced the listing output to dump the AML code for resource descriptors 10636immediately after the ASL code for each descriptor, instead of in a block 10637at 10638the end of the entire resource template. 10639 10640Enhanced the compiler debug output to dump the entire original parse tree 10641constructed during the parse phase, before any transforms are applied to 10642the 10643tree. The transformed tree is dumped also. 10644 10645---------------------------------------- 1064602 November 2005. Summary of changes for version 20051102: 10647 106481) ACPI CA Core Subsystem: 10649 10650Modified the subsystem initialization sequence to improve GPE support. 10651The 10652GPE initialization has been split into two parts in order to defer 10653execution 10654of the _PRW methods (Power Resources for Wake) until after the hardware 10655is 10656fully initialized and the SCI handler is installed. This allows the _PRW 10657methods to access fields protected by the Global Lock. This will fix 10658systems 10659where a NO_GLOBAL_LOCK exception has been seen during initialization. 10660 10661Converted the ACPI internal object disassemble and display code within 10662the 10663AML debugger to fully table-driven operation, reducing code size and 10664increasing maintainability. 10665 10666Fixed a regression with the ConcatenateResTemplate() ASL operator 10667introduced 10668in the 20051021 release. 10669 10670Implemented support for "local" internal ACPI object types within the 10671debugger "Object" command and the AcpiWalkNamespace external interfaces. 10672These local types include RegionFields, BankFields, IndexFields, Alias, 10673and 10674reference objects. 10675 10676Moved common AML resource handling code into a new file, "utresrc.c". 10677This 10678code is shared by both the Resource Manager and the AML Debugger. 10679 10680Code and Data Size: The current and previous library sizes for the core 10681subsystem are shown below. These are the code and data sizes for the 10682acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 10683These 10684values do not include any ACPI driver or OSPM code. The debug version of 10685the 10686code includes the debug output trace mechanism and has a much larger code 10687and data size. Note that these values will vary depending on the 10688efficiency 10689of 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 106992) iASL Compiler/Disassembler: 10700 10701Fixed a problem with very large initializer lists (more than 4000 10702elements) 10703for both Buffer and Package objects where the parse stack could overflow. 10704 10705Enhanced the pre-compile source code scan for non-ASCII characters to 10706ignore 10707characters within comment fields. The scan is now always performed and is 10708no 10709longer optional, detecting invalid characters within a source file 10710immediately rather than during the parse phase or later. 10711 10712Enhanced the ASL grammar definition to force early reductions on all 10713list- 10714style grammar elements so that the overall parse stack usage is greatly 10715reduced. This should improve performance and reduce the possibility of 10716parse 10717stack overflow. 10718 10719Eliminated all reduce/reduce conflicts in the iASL parser generation. 10720Also, 10721with the addition of a %expected statement, the compiler generates from 10722source with no warnings. 10723 10724Fixed a possible segment fault in the disassembler if the input filename 10725does not contain a "dot" extension (Thomas Renninger). 10726 10727---------------------------------------- 1072821 October 2005. Summary of changes for version 20051021: 10729 107301) ACPI CA Core Subsystem: 10731 10732Implemented support for the EM64T and other x86-64 processors. This 10733essentially entails recognizing that these processors support non-aligned 10734memory transfers. Previously, all 64-bit processors were assumed to lack 10735hardware support for non-aligned transfers. 10736 10737Completed conversion of the Resource Manager to nearly full table-driven 10738operation. Specifically, the resource conversion code (convert AML to 10739internal format and the reverse) and the debug code to dump internal 10740resource descriptors are fully table-driven, reducing code and data size 10741and 10742improving maintainability. 10743 10744The OSL interfaces for Acquire and Release Lock now use a 64-bit flag 10745word 10746on 64-bit processors instead of a fixed 32-bit word. (With assistance 10747from 10748Alexey Starikovskiy) 10749 10750Implemented support within the resource conversion code for the Type- 10751Specific byte within the various ACPI 3.0 *WordSpace macros. 10752 10753Fixed some issues within the resource conversion code for the type- 10754specific 10755flags for both Memory and I/O address resource descriptors. For Memory, 10756implemented support for the MTP and TTP flags. For I/O, split the TRS and 10757TTP flags into two separate fields. 10758 10759Code and Data Size: The current and previous library sizes for the core 10760subsystem are shown below. These are the code and data sizes for the 10761acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 10762These 10763values do not include any ACPI driver or OSPM code. The debug version of 10764the 10765code includes the debug output trace mechanism and has a much larger code 10766and data size. Note that these values will vary depending on the 10767efficiency 10768of 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 107792) iASL Compiler/Disassembler: 10780 10781Relaxed a compiler restriction that disallowed a ResourceIndex byte if 10782the 10783corresponding ResourceSource string was not also present in a resource 10784descriptor declaration. This restriction caused problems with existing 10785AML/ASL code that includes the Index byte without the string. When such 10786AML 10787was disassembled, it could not be compiled without modification. Further, 10788the modified code created a resource template with a different size than 10789the 10790original, breaking code that used fixed offsets into the resource 10791template 10792buffer. 10793 10794Removed a recent feature of the disassembler to ignore a lone 10795ResourceIndex 10796byte. This byte is now emitted if present so that the exact AML can be 10797reproduced when the disassembled code is recompiled. 10798 10799Improved comments and text alignment for the resource descriptor code 10800emitted by the disassembler. 10801 10802Implemented disassembler support for the ACPI 3.0 AccessSize field within 10803a 10804Register() resource descriptor. 10805 10806---------------------------------------- 1080730 September 2005. Summary of changes for version 20050930: 10808 108091) ACPI CA Core Subsystem: 10810 10811Completed a major overhaul of the Resource Manager code - specifically, 10812optimizations in the area of the AML/internal resource conversion code. 10813The 10814code has been optimized to simplify and eliminate duplicated code, CPU 10815stack 10816use has been decreased by optimizing function parameters and local 10817variables, and naming conventions across the manager have been 10818standardized 10819for clarity and ease of maintenance (this includes function, parameter, 10820variable, and struct/typedef names.) The update may force changes in some 10821driver code, depending on how resources are handled by the host OS. 10822 10823All Resource Manager dispatch and information tables have been moved to a 10824single location for clarity and ease of maintenance. One new file was 10825created, named "rsinfo.c". 10826 10827The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to 10828guarantee that the argument is not evaluated twice, making them less 10829prone 10830to macro side-effects. However, since there exists the possibility of 10831additional stack use if a particular compiler cannot optimize them (such 10832as 10833in the debug generation case), the original macros are optionally 10834available. 10835Note that some invocations of the return_VALUE macro may now cause size 10836mismatch warnings; the return_UINT8 and return_UINT32 macros are provided 10837to 10838eliminate these. (From Randy Dunlap) 10839 10840Implemented a new mechanism to enable debug tracing for individual 10841control 10842methods. A new external interface, AcpiDebugTrace, is provided to enable 10843this mechanism. The intent is to allow the host OS to easily enable and 10844disable tracing for problematic control methods. This interface can be 10845easily exposed to a user or debugger interface if desired. See the file 10846psxface.c for details. 10847 10848AcpiUtCallocate will now return a valid pointer if a length of zero is 10849specified - a length of one is used and a warning is issued. This matches 10850the behavior of AcpiUtAllocate. 10851 10852Code and Data Size: The current and previous library sizes for the core 10853subsystem are shown below. These are the code and data sizes for the 10854acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 10855These 10856values do not include any ACPI driver or OSPM code. The debug version of 10857the 10858code includes the debug output trace mechanism and has a much larger code 10859and data size. Note that these values will vary depending on the 10860efficiency 10861of 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 108712) iASL Compiler/Disassembler: 10872 10873A remark is issued if the effective compile-time length of a package or 10874buffer is zero. Previously, this was a warning. 10875 10876---------------------------------------- 1087716 September 2005. Summary of changes for version 20050916: 10878 108791) ACPI CA Core Subsystem: 10880 10881Fixed a problem within the Resource Manager where support for the Generic 10882Register descriptor was not fully implemented. This descriptor is now 10883fully 10884recognized, parsed, disassembled, and displayed. 10885 10886Completely restructured the Resource Manager code to utilize table-driven 10887dispatch and lookup, eliminating many of the large switch() statements. 10888This 10889reduces overall subsystem code size and code complexity. Affects the 10890resource parsing and construction, disassembly, and debug dump output. 10891 10892Cleaned up and restructured the debug dump output for all resource 10893descriptors. Improved readability of the output and reduced code size. 10894 10895Fixed a problem where changes to internal data structures caused the 10896optional ACPI_MUTEX_DEBUG code to fail compilation if specified. 10897 10898Code and Data Size: The current and previous library sizes for the core 10899subsystem are shown below. These are the code and data sizes for the 10900acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 10901These 10902values do not include any ACPI driver or OSPM code. The debug version of 10903the 10904code includes the debug output trace mechanism and has a much larger code 10905and data size. Note that these values will vary depending on the 10906efficiency 10907of 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 109172) iASL Compiler/Disassembler: 10918 10919Updated the disassembler to automatically insert an EndDependentFn() 10920macro 10921into the ASL stream if this macro is missing in the original AML code, 10922simplifying compilation of the resulting ASL module. 10923 10924Fixed a problem in the disassembler where a disassembled ResourceSource 10925string (within a large resource descriptor) was not surrounded by quotes 10926and 10927not followed by a comma, causing errors when the resulting ASL module was 10928compiled. Also, escape sequences within a ResourceSource string are now 10929handled correctly (especially "\\") 10930 10931---------------------------------------- 1093202 September 2005. Summary of changes for version 20050902: 10933 109341) ACPI CA Core Subsystem: 10935 10936Fixed a problem with the internal Owner ID allocation and deallocation 10937mechanisms for control method execution and recursive method invocation. 10938This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId" 10939messages seen on some systems. Recursive method invocation depth is 10940currently limited to 255. (Alexey Starikovskiy) 10941 10942Completely eliminated all vestiges of support for the "module-level 10943executable code" until this support is fully implemented and debugged. 10944This 10945should eliminate the NO_RETURN_VALUE exceptions seen during table load on 10946some systems that invoke this support. 10947 10948Fixed a problem within the resource manager code where the transaction 10949flags 10950for a 64-bit address descriptor were handled incorrectly in the type- 10951specific flag byte. 10952 10953Consolidated duplicate code within the address descriptor resource 10954manager 10955code, reducing overall subsystem code size. 10956 10957Fixed a fault when using the AML debugger "disassemble" command to 10958disassemble individual control methods. 10959 10960Removed references to the "release_current" directory within the Unix 10961release package. 10962 10963Code and Data Size: The current and previous core subsystem library sizes 10964are shown below. These are the code and data sizes for the acpica.lib 10965produced by the Microsoft Visual C++ 6.0 compiler. These values do not 10966include any ACPI driver or OSPM code. The debug version of the code 10967includes 10968the debug output trace mechanism and has a much larger code and data 10969size. 10970Note that these values will vary depending on the efficiency of the 10971compiler 10972and 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 109822) iASL Compiler/Disassembler: 10983 10984Implemented an error check for illegal duplicate values in the interrupt 10985and 10986dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and 10987Interrupt(). 10988 10989Implemented error checking for the Irq() and IrqNoFlags() macros to 10990detect 10991too many values in the interrupt list (16 max) and invalid values in the 10992list (range 0 - 15) 10993 10994The maximum length string literal within an ASL file is now restricted to 10995200 characters as per the ACPI specification. 10996 10997Fixed a fault when using the -ln option (generate namespace listing). 10998 10999Implemented an error check to determine if a DescriptorName within a 11000resource descriptor has already been used within the current scope. 11001 11002---------------------------------------- 1100315 August 2005. Summary of changes for version 20050815: 11004 110051) ACPI CA Core Subsystem: 11006 11007Implemented a full bytewise compare to determine if a table load request 11008is 11009attempting to load a duplicate table. The compare is performed if the 11010table 11011signatures and table lengths match. This will allow different tables with 11012the same OEM Table ID and revision to be loaded - probably against the 11013ACPI 11014specification, but discovered in the field nonetheless. 11015 11016Added the changes.txt logfile to each of the zipped release packages. 11017 11018Code and Data Size: Current and previous core subsystem library sizes are 11019shown below. These are the code and data sizes for the acpica.lib 11020produced 11021by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11022any ACPI driver or OSPM code. The debug version of the code includes the 11023debug output trace mechanism and has a much larger code and data size. 11024Note 11025that these values will vary depending on the efficiency of the compiler 11026and 11027the 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 110372) iASL Compiler/Disassembler: 11038 11039Fixed a problem where incorrect AML code could be generated for Package 11040objects if optimization is disabled (via the -oa switch). 11041 11042Fixed a problem with where incorrect AML code is generated for variable- 11043length packages when the package length is not specified and the number 11044of 11045initializer values is greater than 255. 11046 11047 11048---------------------------------------- 1104929 July 2005. Summary of changes for version 20050729: 11050 110511) ACPI CA Core Subsystem: 11052 11053Implemented support to ignore an attempt to install/load a particular 11054ACPI 11055table more than once. Apparently there exists BIOS code that repeatedly 11056attempts to load the same SSDT upon certain events. With assistance from 11057Venkatesh Pallipadi. 11058 11059Restructured the main interface to the AML parser in order to correctly 11060handle all exceptional conditions. This will prevent leakage of the 11061OwnerId 11062resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on 11063some 11064machines. With assistance from Alexey Starikovskiy. 11065 11066Support for "module level code" has been disabled in this version due to 11067a 11068number of issues that have appeared on various machines. The support can 11069be 11070enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem 11071compilation. When the issues are fully resolved, the code will be enabled 11072by 11073default again. 11074 11075Modified the internal functions for debug print support to define the 11076FunctionName parameter as a (const char *) for compatibility with 11077compiler 11078built-in macros such as __FUNCTION__, etc. 11079 11080Linted the entire ACPICA source tree for both 32-bit and 64-bit. 11081 11082Implemented support to display an object count summary for the AML 11083Debugger 11084commands Object and Methods. 11085 11086Code and Data Size: Current and previous core subsystem library sizes are 11087shown below. These are the code and data sizes for the acpica.lib 11088produced 11089by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11090any ACPI driver or OSPM code. The debug version of the code includes the 11091debug output trace mechanism and has a much larger code and data size. 11092Note 11093that these values will vary depending on the efficiency of the compiler 11094and 11095the 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 111052) iASL Compiler/Disassembler: 11106 11107Fixed a regression that appeared in the 20050708 version of the compiler 11108where an error message was inadvertently emitted for invocations of the 11109_OSI 11110reserved control method. 11111 11112---------------------------------------- 1111308 July 2005. Summary of changes for version 20050708: 11114 111151) ACPI CA Core Subsystem: 11116 11117The use of the CPU stack in the debug version of the subsystem has been 11118considerably reduced. Previously, a debug structure was declared in every 11119function that used the debug macros. This structure has been removed in 11120favor of declaring the individual elements as parameters to the debug 11121functions. This reduces the cumulative stack use during nested execution 11122of 11123ACPI function calls at the cost of a small increase in the code size of 11124the 11125debug version of the subsystem. With assistance from Alexey Starikovskiy 11126and 11127Len Brown. 11128 11129Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent 11130headers to define a macro that will return the current function name at 11131runtime (such as __FUNCTION__ or _func_, etc.) The function name is used 11132by 11133the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the 11134compiler-dependent header, the function name is saved on the CPU stack 11135(one 11136pointer per function.) This mechanism is used because apparently there 11137exists no standard ANSI-C defined macro that that returns the function 11138name. 11139 11140Redesigned and reimplemented the "Owner ID" mechanism used to track 11141namespace objects created/deleted by ACPI tables and control method 11142execution. A bitmap is now used to allocate and free the IDs, thus 11143solving 11144the wraparound problem present in the previous implementation. The size 11145of 11146the namespace node descriptor was reduced by 2 bytes as a result (Alexey 11147Starikovskiy). 11148 11149Removed the UINT32_BIT and UINT16_BIT types that were used for the 11150bitfield 11151flag definitions within the headers for the predefined ACPI tables. These 11152have been replaced by UINT8_BIT in order to increase the code portability 11153of 11154the subsystem. If the use of UINT8 remains a problem, we may be forced to 11155eliminate bitfields entirely because of a lack of portability. 11156 11157Enhanced the performance of the AcpiUtUpdateObjectReference procedure. 11158This 11159is a frequently used function and this improvement increases the 11160performance 11161of the entire subsystem (Alexey Starikovskiy). 11162 11163Fixed several possible memory leaks and the inverse - premature object 11164deletion (Alexey Starikovskiy). 11165 11166Code and Data Size: Current and previous core subsystem library sizes are 11167shown below. These are the code and data sizes for the acpica.lib 11168produced 11169by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11170any ACPI driver or OSPM code. The debug version of the code includes the 11171debug output trace mechanism and has a much larger code and data size. 11172Note 11173that these values will vary depending on the efficiency of the compiler 11174and 11175the 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---------------------------------------- 1118524 June 2005. Summary of changes for version 20050624: 11186 111871) ACPI CA Core Subsystem: 11188 11189Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for 11190the host-defined cache object. This allows the OSL implementation to 11191define 11192and type this object in any manner desired, simplifying the OSL 11193implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for 11194Linux, and should be defined in the OS-specific header file for other 11195operating systems as required. 11196 11197Changed the interface to AcpiOsAcquireObject to directly return the 11198requested object as the function return (instead of ACPI_STATUS.) This 11199change was made for performance reasons, since this is the purpose of the 11200interface in the first place. AcpiOsAcquireObject is now similar to the 11201AcpiOsAllocate interface. 11202 11203Implemented a new AML debugger command named Businfo. This command 11204displays 11205information about all devices that have an associate _PRT object. The 11206_ADR, 11207_HID, _UID, and _CID are displayed for these devices. 11208 11209Modified the initialization sequence in AcpiInitializeSubsystem to call 11210the 11211OSL interface AcpiOslInitialize first, before any local initialization. 11212This 11213change was required because the global initialization now calls OSL 11214interfaces. 11215 11216Enhanced the Dump command to display the entire contents of Package 11217objects 11218(including all sub-objects and their values.) 11219 11220Restructured the code base to split some files because of size and/or 11221because the code logically belonged in a separate file. New files are 11222listed 11223below. All makefiles and project files included in the ACPI CA release 11224have 11225been 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 11231Code and Data Size: Current and previous core subsystem library sizes are 11232shown below. These are the code and data sizes for the acpica.lib 11233produced 11234by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11235any ACPI driver or OSPM code. The debug version of the code includes the 11236debug output trace mechanism and has a much larger code and data size. 11237Note 11238that these values will vary depending on the efficiency of the compiler 11239and 11240the 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 112502) iASL Compiler/Disassembler: 11251 11252Fixed a regression introduced in version 20050513 where the use of a 11253Package 11254object within a Case() statement caused a compile time exception. The 11255original behavior has been restored (a Match() operator is emitted.) 11256 11257---------------------------------------- 1125817 June 2005. Summary of changes for version 20050617: 11259 112601) ACPI CA Core Subsystem: 11261 11262Moved the object cache operations into the OS interface layer (OSL) to 11263allow 11264the host OS to handle these operations if desired (for example, the Linux 11265OSL will invoke the slab allocator). This support is optional; the 11266compile 11267time define ACPI_USE_LOCAL_CACHE may be used to utilize the original 11268cache 11269code in the ACPI CA core. The new OSL interfaces are shown below. See 11270utalloc.c for an example implementation, and acpiosxf.h for the exact 11271interface definitions. With assistance from Alexey Starikovskiy. 11272 AcpiOsCreateCache 11273 AcpiOsDeleteCache 11274 AcpiOsPurgeCache 11275 AcpiOsAcquireObject 11276 AcpiOsReleaseObject 11277 11278Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to 11279return 11280and restore a flags parameter. This fits better with many OS lock models. 11281Note: the current execution state (interrupt handler or not) is no longer 11282passed to these interfaces. If necessary, the OSL must determine this 11283state 11284by itself, a simple and fast operation. With assistance from Alexey 11285Starikovskiy. 11286 11287Fixed a problem in the ACPI table handling where a valid XSDT was assumed 11288present if the revision of the RSDP was 2 or greater. According to the 11289ACPI 11290specification, the XSDT is optional in all cases, and the table manager 11291therefore now checks for both an RSDP >=2 and a valid XSDT pointer. 11292Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs 11293contain 11294only the RSDT. 11295 11296Fixed an interpreter problem with the Mid() operator in the case of an 11297input 11298string where the resulting output string is of zero length. It now 11299correctly 11300returns a valid, null terminated string object instead of a string object 11301with a null pointer. 11302 11303Fixed a problem with the control method argument handling to allow a 11304store 11305to an Arg object that already contains an object of type Device. The 11306Device 11307object is now correctly overwritten. Previously, an error was returned. 11308 11309 11310Enhanced the debugger Find command to emit object values in addition to 11311the 11312found object pathnames. The output format is the same as the dump 11313namespace 11314command. 11315 11316Enhanced the debugger Set command. It now has the ability to set the 11317value 11318of any Named integer object in the namespace (Previously, only method 11319locals 11320and args could be set.) 11321 11322Code and Data Size: Current and previous core subsystem library sizes are 11323shown below. These are the code and data sizes for the acpica.lib 11324produced 11325by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11326any ACPI driver or OSPM code. The debug version of the code includes the 11327debug output trace mechanism and has a much larger code and data size. 11328Note 11329that these values will vary depending on the efficiency of the compiler 11330and 11331the 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 113412) iASL Compiler/Disassembler: 11342 11343Fixed a regression in the disassembler where if/else/while constructs 11344were 11345output incorrectly. This problem was introduced in the previous release 11346(20050526). This problem also affected the single-step disassembly in the 11347debugger. 11348 11349Fixed a problem where compiling the reserved _OSI method would randomly 11350(but 11351rarely) produce compile errors. 11352 11353Enhanced the disassembler to emit compilable code in the face of 11354incorrect 11355AML resource descriptors. If the optional ResourceSourceIndex is present, 11356but the ResourceSource is not, do not emit the ResourceSourceIndex in the 11357disassembly. Otherwise, the resulting code cannot be compiled without 11358errors. 11359 11360---------------------------------------- 1136126 May 2005. Summary of changes for version 20050526: 11362 113631) ACPI CA Core Subsystem: 11364 11365Implemented support to execute Type 1 and Type 2 AML opcodes appearing at 11366the module level (not within a control method.) These opcodes are 11367executed 11368exactly once at the time the table is loaded. This type of code was legal 11369up 11370until the release of ACPI 2.0B (2002) and is now supported within ACPI CA 11371in 11372order to provide backwards compatibility with earlier BIOS 11373implementations. 11374This eliminates the "Encountered executable code at module level" warning 11375that was previously generated upon detection of such code. 11376 11377Fixed a problem in the interpreter where an AE_NOT_FOUND exception could 11378inadvertently be generated during the lookup of namespace objects in the 11379second pass parse of ACPI tables and control methods. It appears that 11380this 11381problem could occur during the resolution of forward references to 11382namespace 11383objects. 11384 11385Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function, 11386corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This 11387allows the deadlock detection debug code to be compiled out in the normal 11388case, improving mutex performance (and overall subsystem performance) 11389considerably. 11390 11391Implemented a handful of miscellaneous fixes for possible memory leaks on 11392error conditions and error handling control paths. These fixes were 11393suggested by FreeBSD and the Coverity Prevent source code analysis tool. 11394 11395Added a check for a null RSDT pointer in AcpiGetFirmwareTable 11396(tbxfroot.c) 11397to prevent a fault in this error case. 11398 11399Code and Data Size: Current and previous core subsystem library sizes are 11400shown below. These are the code and data sizes for the acpica.lib 11401produced 11402by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11403any ACPI driver or OSPM code. The debug version of the code includes the 11404debug output trace mechanism and has a much larger code and data size. 11405Note 11406that these values will vary depending on the efficiency of the compiler 11407and 11408the 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 114182) iASL Compiler/Disassembler: 11419 11420Implemented support to allow Type 1 and Type 2 ASL operators to appear at 11421the module level (not within a control method.) These operators will be 11422executed once at the time the table is loaded. This type of code was 11423legal 11424up until the release of ACPI 2.0B (2002) and is now supported by the iASL 11425compiler in order to provide backwards compatibility with earlier BIOS 11426ASL 11427code. 11428 11429The ACPI integer width (specified via the table revision ID or the -r 11430override, 32 or 64 bits) is now used internally during compile-time 11431constant 11432folding to ensure that constants are truncated to 32 bits if necessary. 11433Previously, the revision ID value was only emitted in the AML table 11434header. 11435 11436An error message is now generated for the Mutex and Method operators if 11437the 11438SyncLevel parameter is outside the legal range of 0 through 15. 11439 11440Fixed a problem with the Method operator ParameterTypes list handling 11441(ACPI 114423.0). Previously, more than 2 types or 2 arguments generated a syntax 11443error. 11444The actual underlying implementation of method argument typechecking is 11445still under development, however. 11446 11447---------------------------------------- 1144813 May 2005. Summary of changes for version 20050513: 11449 114501) ACPI CA Core Subsystem: 11451 11452Implemented support for PCI Express root bridges -- added support for 11453device 11454PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup. 11455 11456The interpreter now automatically truncates incoming 64-bit constants to 1145732 11458bits if currently executing out of a 32-bit ACPI table (Revision < 2). 11459This 11460also affects the iASL compiler constant folding. (Note: as per below, the 11461iASL compiler no longer allows 64-bit constants within 32-bit tables.) 11462 11463Fixed a problem where string and buffer objects with "static" pointers 11464(pointers to initialization data within an ACPI table) were not handled 11465consistently. The internal object copy operation now always copies the 11466data 11467to a newly allocated buffer, regardless of whether the source object is 11468static or not. 11469 11470Fixed a problem with the FromBCD operator where an implicit result 11471conversion was improperly performed while storing the result to the 11472target 11473operand. Since this is an "explicit conversion" operator, the implicit 11474conversion should never be performed on the output. 11475 11476Fixed a problem with the CopyObject operator where a copy to an existing 11477named object did not always completely overwrite the existing object 11478stored 11479at name. Specifically, a buffer-to-buffer copy did not delete the 11480existing 11481buffer. 11482 11483Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces 11484and 11485structs for consistency. 11486 11487Code and Data Size: Current and previous core subsystem library sizes are 11488shown below. These are the code and data sizes for the acpica.lib 11489produced 11490by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11491any ACPI driver or OSPM code. The debug version of the code includes the 11492debug output trace mechanism and has a much larger code and data size. 11493Note 11494that these values will vary depending on the efficiency of the compiler 11495and 11496the 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 115062) iASL Compiler/Disassembler: 11507 11508The compiler now emits a warning if an attempt is made to generate a 64- 11509bit 11510integer constant from within a 32-bit ACPI table (Revision < 2). The 11511integer 11512is truncated to 32 bits. 11513 11514Fixed a problem with large package objects: if the static length of the 11515package is greater than 255, the "variable length package" opcode is 11516emitted. Previously, this caused an error. This requires an update to the 11517ACPI spec, since it currently (incorrectly) states that packages larger 11518than 11519255 elements are not allowed. 11520 11521The disassembler now correctly handles variable length packages and 11522packages 11523larger than 255 elements. 11524 11525---------------------------------------- 1152608 April 2005. Summary of changes for version 20050408: 11527 115281) ACPI CA Core Subsystem: 11529 11530Fixed three cases in the interpreter where an "index" argument to an ASL 11531function was still (internally) 32 bits instead of the required 64 bits. 11532This was the Index argument to the Index, Mid, and Match operators. 11533 11534The "strupr" function is now permanently local (AcpiUtStrupr), since this 11535is 11536not a POSIX-defined function and not present in most kernel-level C 11537libraries. All references to the C library strupr function have been 11538removed 11539from the headers. 11540 11541Completed the deployment of static functions/prototypes. All prototypes 11542with 11543the static attribute have been moved from the headers to the owning C 11544file. 11545 11546Implemented an extract option (-e) for the AcpiBin utility (AML binary 11547utility). This option allows the utility to extract individual ACPI 11548tables 11549from the output of AcpiDmp. It provides the same functionality of the 11550acpixtract.pl perl script without the worry of setting the correct perl 11551options. AcpiBin runs on Windows and has not yet been generated/validated 11552in 11553the Linux/Unix environment (but should be soon). 11554 11555Updated and fixed the table dump option for AcpiBin (-d). This option 11556converts a single ACPI table to a hex/ascii file, similar to the output 11557of 11558AcpiDmp. 11559 11560Code and Data Size: Current and previous core subsystem library sizes are 11561shown below. These are the code and data sizes for the acpica.lib 11562produced 11563by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11564any ACPI driver or OSPM code. The debug version of the code includes the 11565debug output trace mechanism and has a much larger code and data size. 11566Note 11567that these values will vary depending on the efficiency of the compiler 11568and 11569the 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 115792) iASL Compiler/Disassembler: 11580 11581Disassembler fix: Added a check to ensure that the table length found in 11582the 11583ACPI table header within the input file is not longer than the actual 11584input 11585file size. This indicates some kind of file or table corruption. 11586 11587---------------------------------------- 1158829 March 2005. Summary of changes for version 20050329: 11589 115901) ACPI CA Core Subsystem: 11591 11592An error is now generated if an attempt is made to create a Buffer Field 11593of 11594length zero (A CreateField with a length operand of zero.) 11595 11596The interpreter now issues a warning whenever executable code at the 11597module 11598level is detected during ACPI table load. This will give some idea of the 11599prevalence of this type of code. 11600 11601Implemented support for references to named objects (other than control 11602methods) within package objects. 11603 11604Enhanced package object output for the debug object. Package objects are 11605now 11606completely dumped, showing all elements. 11607 11608Enhanced miscellaneous object output for the debug object. Any object can 11609now be written to the debug object (for example, a device object can be 11610written, and the type of the object will be displayed.) 11611 11612The "static" qualifier has been added to all local functions across both 11613the 11614core subsystem and the iASL compiler. 11615 11616The number of "long" lines (> 80 chars) within the source has been 11617significantly reduced, by about 1/3. 11618 11619Cleaned up all header files to ensure that all CA/iASL functions are 11620prototyped (even static functions) and the formatting is consistent. 11621 11622Two new header files have been added, acopcode.h and acnames.h. 11623 11624Removed several obsolete functions that were no longer used. 11625 11626Code and Data Size: Current and previous core subsystem library sizes are 11627shown below. These are the code and data sizes for the acpica.lib 11628produced 11629by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11630any ACPI driver or OSPM code. The debug version of the code includes the 11631debug output trace mechanism and has a much larger code and data size. 11632Note 11633that these values will vary depending on the efficiency of the compiler 11634and 11635the 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 116462) iASL Compiler/Disassembler: 11647 11648Fixed a problem with the resource descriptor generation/support. For the 11649ResourceSourceIndex and the ResourceSource fields, both must be present, 11650or 11651both must be not present - can't have one without the other. 11652 11653The compiler now returns non-zero from the main procedure if any errors 11654have 11655occurred during the compilation. 11656 11657 11658---------------------------------------- 1165909 March 2005. Summary of changes for version 20050309: 11660 116611) ACPI CA Core Subsystem: 11662 11663The string-to-buffer implicit conversion code has been modified again 11664after 11665a change to the ACPI specification. In order to match the behavior of 11666the 11667other major ACPI implementation, the target buffer is no longer truncated 11668if 11669the source string is smaller than an existing target buffer. This change 11670requires an update to the ACPI spec, and should eliminate the recent 11671AE_AML_BUFFER_LIMIT issues. 11672 11673The "implicit return" support was rewritten to a new algorithm that 11674solves 11675the general case. Rather than attempt to determine when a method is about 11676to 11677exit, the result of every ASL operator is saved momentarily until the 11678very 11679next ASL operator is executed. Therefore, no matter how the method exits, 11680there will always be a saved implicit return value. This feature is only 11681enabled with the AcpiGbl_EnableInterpreterSlack flag, and should 11682eliminate 11683AE_AML_NO_RETURN_VALUE errors when enabled. 11684 11685Implemented implicit conversion support for the predicate (operand) of 11686the 11687If, Else, and While operators. String and Buffer arguments are 11688automatically 11689converted to Integers. 11690 11691Changed the string-to-integer conversion behavior to match the new ACPI 11692errata: "If no integer object exists, a new integer is created. The ASCII 11693string is interpreted as a hexadecimal constant. Each string character is 11694interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting 11695with the first character as the most significant digit, and ending with 11696the 11697first non-hexadecimal character or end-of-string." This means that the 11698first 11699non-hex character terminates the conversion and this is the code that was 11700changed. 11701 11702Fixed a problem where the ObjectType operator would fail (fault) when 11703used 11704on an Index of a Package which pointed to a null package element. The 11705operator now properly returns zero (Uninitialized) in this case. 11706 11707Fixed a problem where the While operator used excessive memory by not 11708properly popping the result stack during execution. There was no memory 11709leak 11710after execution, however. (Code provided by Valery Podrezov.) 11711 11712Fixed a problem where references to control methods within Package 11713objects 11714caused the method to be invoked, instead of producing a reference object 11715pointing to the method. 11716 11717Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree) 11718to 11719improve performance and reduce code size. (Code provided by Alexey 11720Starikovskiy.) 11721 11722Code and Data Size: Current and previous core subsystem library sizes are 11723shown below. These are the code and data sizes for the acpica.lib 11724produced 11725by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11726any ACPI driver or OSPM code. The debug version of the code includes the 11727debug output trace mechanism and has a much larger code and data size. 11728Note 11729that these values will vary depending on the efficiency of the compiler 11730and 11731the 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 117412) iASL Compiler/Disassembler: 11742 11743Fixed a problem with the Return operator with no arguments. Since the AML 11744grammar for the byte encoding requires an operand for the Return opcode, 11745the 11746compiler now emits a Return(Zero) for this case. An ACPI specification 11747update has been written for this case. 11748 11749For tables other than the DSDT, namepath optimization is automatically 11750disabled. This is because SSDTs can be loaded anywhere in the namespace, 11751the 11752compiler has no knowledge of where, and thus cannot optimize namepaths. 11753 11754Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was 11755inadvertently omitted from the ACPI specification, and will require an 11756update to the spec. 11757 11758The source file scan for ASCII characters is now optional (-a). This 11759change 11760was made because some vendors place non-ascii characters within comments. 11761However, the scan is simply a brute-force byte compare to ensure all 11762characters in the file are in the range 0x00 to 0x7F. 11763 11764Fixed a problem with the CondRefOf operator where the compiler was 11765inappropriately checking for the existence of the target. Since the point 11766of 11767the operator is to check for the existence of the target at run-time, the 11768compiler no longer checks for the target existence. 11769 11770Fixed a problem where errors generated from the internal AML interpreter 11771during constant folding were not handled properly, causing a fault. 11772 11773Fixed a problem with overly aggressive range checking for the Stall 11774operator. The valid range (max 255) is now only checked if the operand is 11775of 11776type Integer. All other operand types cannot be statically checked. 11777 11778Fixed a problem where control method references within the RefOf, 11779DeRefOf, 11780and ObjectType operators were not treated properly. They are now treated 11781as 11782actual references, not method invocations. 11783 11784Fixed and enhanced the "list namespace" option (-ln). This option was 11785broken 11786a number of releases ago. 11787 11788Improved error handling for the Field, IndexField, and BankField 11789operators. 11790The compiler now cleanly reports and recovers from errors in the field 11791component (FieldUnit) list. 11792 11793Fixed a disassembler problem where the optional ResourceDescriptor fields 11794TRS and TTP were not always handled correctly. 11795 11796Disassembler - Comments in output now use "//" instead of "/*" 11797 11798---------------------------------------- 1179928 February 2005. Summary of changes for version 20050228: 11800 118011) ACPI CA Core Subsystem: 11802 11803Fixed a problem where the result of an Index() operator (an object 11804reference) must increment the reference count on the target object for 11805the 11806life of the object reference. 11807 11808Implemented AML Interpreter and Debugger support for the new ACPI 3.0 11809Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and 11810WordSpace 11811resource descriptors. 11812 11813Implemented support in the _OSI method for the ACPI 3.0 "Extended Address 11814Space Descriptor" string, indicating interpreter support for the 11815descriptors 11816above. 11817 11818Implemented header support for the new ACPI 3.0 FADT flag bits. 11819 11820Implemented header support for the new ACPI 3.0 PCI Express bits for the 11821PM1 11822status/enable registers. 11823 11824Updated header support for the MADT processor local Apic struct and MADT 11825platform interrupt source struct for new ACPI 3.0 fields. 11826 11827Implemented header support for the SRAT and SLIT ACPI tables. 11828 11829Implemented the -s switch in AcpiExec to enable the "InterpreterSlack" 11830flag 11831at runtime. 11832 11833Code and Data Size: Current and previous core subsystem library sizes are 11834shown below. These are the code and data sizes for the acpica.lib 11835produced 11836by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11837any ACPI driver or OSPM code. The debug version of the code includes the 11838debug output trace mechanism and has a much larger code and data size. 11839Note 11840that these values will vary depending on the efficiency of the compiler 11841and 11842the 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 118522) iASL Compiler/Disassembler: 11853 11854Fixed a problem with the internal 64-bit String-to-integer conversion 11855with 11856strings less than two characters long. 11857 11858Fixed a problem with constant folding where the result of the Index() 11859operator can not be considered a constant. This means that Index() cannot 11860be 11861a type3 opcode and this will require an update to the ACPI specification. 11862 11863Disassembler: Implemented support for the TTP, MTP, and TRS resource 11864descriptor fields. These fields were inadvertently ignored and not output 11865in 11866the disassembly of the resource descriptor. 11867 11868 11869 ---------------------------------------- 1187011 February 2005. Summary of changes for version 20050211: 11871 118721) ACPI CA Core Subsystem: 11873 11874Implemented ACPI 3.0 support for implicit conversion within the Match() 11875operator. MatchObjects can now be of type integer, buffer, or string 11876instead 11877of just type integer. Package elements are implicitly converted to the 11878type 11879of the MatchObject. This change aligns the behavior of Match() with the 11880behavior of the other logical operators (LLess(), etc.) It also requires 11881an 11882errata change to the ACPI specification as this support was intended for 11883ACPI 3.0, but was inadvertently omitted. 11884 11885Fixed a problem with the internal implicit "to buffer" conversion. 11886Strings 11887that are converted to buffers will cause buffer truncation if the string 11888is 11889smaller than the target buffer. Integers that are converted to buffers 11890will 11891not cause buffer truncation, only zero extension (both as per the ACPI 11892spec.) The problem was introduced when code was added to truncate the 11893buffer, but this should not be performed in all cases, only the string 11894case. 11895 11896Fixed a problem with the Buffer and Package operators where the 11897interpreter 11898would get confused if two such operators were used as operands to an ASL 11899operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result 11900stack was not being popped after the execution of these operators, 11901resulting 11902in an AE_NO_RETURN_VALUE exception. 11903 11904Fixed a problem with constructs of the form Store(Index(...),...). The 11905reference object returned from Index was inadvertently resolved to an 11906actual 11907value. This problem was introduced in version 20050114 when the behavior 11908of 11909Store() was modified to restrict the object types that can be used as the 11910source operand (to match the ACPI specification.) 11911 11912Reduced excessive stack use within the AcpiGetObjectInfo procedure. 11913 11914Added a fix to aclinux.h to allow generation of AcpiExec on Linux. 11915 11916Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct. 11917 11918Code and Data Size: Current and previous core subsystem library sizes are 11919shown below. These are the code and data sizes for the acpica.lib 11920produced 11921by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11922any ACPI driver or OSPM code. The debug version of the code includes the 11923debug output trace mechanism and has a much larger code and data size. 11924Note 11925that these values will vary depending on the efficiency of the compiler 11926and 11927the 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 119372) iASL Compiler/Disassembler: 11938 11939Fixed a code generation problem in the constant folding optimization code 11940where incorrect code was generated if a constant was reduced to a buffer 11941object (i.e., a reduced type 5 opcode.) 11942 11943Fixed a typechecking problem for the ToBuffer operator. Caused by an 11944incorrect return type in the internal opcode information table. 11945 11946---------------------------------------- 1194725 January 2005. Summary of changes for version 20050125: 11948 119491) ACPI CA Core Subsystem: 11950 11951Fixed a recently introduced problem with the Global Lock where the 11952underlying semaphore was not created. This problem was introduced in 11953version 20050114, and caused an AE_AML_NO_OPERAND exception during an 11954Acquire() operation on _GL. 11955 11956The local object cache is now optional, and is disabled by default. Both 11957AcpiExec and the iASL compiler enable the cache because they run in user 11958mode and this enhances their performance. #define 11959ACPI_ENABLE_OBJECT_CACHE 11960to enable the local cache. 11961 11962Fixed an issue in the internal function AcpiUtEvaluateObject concerning 11963the 11964optional "implicit return" support where an error was returned if no 11965return 11966object was expected, but one was implicitly returned. AE_OK is now 11967returned 11968in this case and the implicitly returned object is deleted. 11969AcpiUtEvaluateObject is only occasionally used, and only to execute 11970reserved 11971methods such as _STA and _INI where the return type is known up front. 11972 11973Fixed a few issues with the internal convert-to-integer code. It now 11974returns 11975an error if an attempt is made to convert a null string, a string of only 11976blanks/tabs, or a zero-length buffer. This affects both implicit 11977conversion 11978and explicit conversion via the ToInteger() operator. 11979 11980The internal debug code in AcpiUtAcquireMutex has been commented out. It 11981is 11982not needed for normal operation and should increase the performance of 11983the 11984entire subsystem. The code remains in case it is needed for debug 11985purposes 11986again. 11987 11988The AcpiExec source and makefile are included in the Unix/Linux package 11989for 11990the first time. 11991 11992Code and Data Size: Current and previous core subsystem library sizes are 11993shown below. These are the code and data sizes for the acpica.lib 11994produced 11995by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11996any ACPI driver or OSPM code. The debug version of the code includes the 11997debug output trace mechanism and has a much larger code and data size. 11998Note 11999that these values will vary depending on the efficiency of the compiler 12000and 12001the 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 120102) iASL Compiler/Disassembler: 12011 12012Switch/Case support: A warning is now issued if the type of the Switch 12013value 12014cannot be determined at compile time. For example, Switch(Arg0) will 12015generate the warning, and the type is assumed to be an integer. As per 12016the 12017ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate 12018the 12019warning. 12020 12021Switch/Case support: Implemented support for buffer and string objects as 12022the switch value. This is an ACPI 3.0 feature, now that LEqual supports 12023buffers and strings. 12024 12025Switch/Case support: The emitted code for the LEqual() comparisons now 12026uses 12027the switch value as the first operand, not the second. The case value is 12028now 12029the second operand, and this allows the case value to be implicitly 12030converted to the type of the switch value, not the other way around. 12031 12032Switch/Case support: Temporary variables are now emitted immediately 12033within 12034the control method, not at the global level. This means that there are 12035now 1203636 temps available per-method, not 36 temps per-module as was the case 12037with 12038the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.) 12039 12040---------------------------------------- 1204114 January 2005. Summary of changes for version 20050114: 12042 12043Added 2005 copyright to all module headers. This affects every module in 12044the core subsystem, iASL compiler, and the utilities. 12045 120461) ACPI CA Core Subsystem: 12047 12048Fixed an issue with the String-to-Buffer conversion code where the string 12049null terminator was not included in the buffer after conversion, but 12050there 12051is existing ASL that assumes the string null terminator is included. This 12052is 12053the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was 12054introduced in the previous version when the code was updated to correctly 12055set the converted buffer size as per the ACPI specification. The ACPI 12056spec 12057is ambiguous and will be updated to specify that the null terminator must 12058be 12059included in the converted buffer. This also affects the ToBuffer() ASL 12060operator. 12061 12062Fixed a problem with the Mid() ASL/AML operator where it did not work 12063correctly on Buffer objects. Newly created sub-buffers were not being 12064marked 12065as initialized. 12066 12067 12068Fixed a problem in AcpiTbFindTable where incorrect string compares were 12069performed on the OemId and OemTableId table header fields. These fields 12070are 12071not null terminated, so strncmp is now used instead of strcmp. 12072 12073Implemented a restriction on the Store() ASL/AML operator to align the 12074behavior with the ACPI specification. Previously, any object could be 12075used 12076as the source operand. Now, the only objects that may be used are 12077Integers, 12078Buffers, Strings, Packages, Object References, and DDB Handles. If 12079necessary, the original behavior can be restored by enabling the 12080EnableInterpreterSlack flag. 12081 12082Enhanced the optional "implicit return" support to allow an implicit 12083return 12084value from methods that are invoked externally via the AcpiEvaluateObject 12085interface. This enables implicit returns from the _STA and _INI methods, 12086for example. 12087 12088Changed the Revision() ASL/AML operator to return the current version of 12089the 12090AML interpreter, in the YYYYMMDD format. Previously, it incorrectly 12091returned 12092the supported ACPI version (This is the function of the _REV method). 12093 12094Updated the _REV predefined method to return the currently supported 12095version 12096of ACPI, now 3. 12097 12098Implemented batch mode option for the AcpiExec utility (-b). 12099 12100Code and Data Size: Current and previous core subsystem library sizes are 12101shown below. These are the code and data sizes for the acpica.lib 12102produced 12103by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12104any ACPI driver or OSPM code. The debug version of the code includes the 12105debug output trace mechanism and has a much larger code and data size. 12106Note 12107that these values will vary depending on the efficiency of the compiler 12108and 12109the 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---------------------------------------- 1211910 December 2004. Summary of changes for version 20041210: 12120 12121ACPI 3.0 support is nearing completion in both the iASL compiler and the 12122ACPI CA core subsystem. 12123 121241) ACPI CA Core Subsystem: 12125 12126Fixed a problem in the ToDecimalString operator where the resulting 12127string 12128length was incorrectly calculated. The length is now calculated exactly, 12129eliminating incorrect AE_STRING_LIMIT exceptions. 12130 12131Fixed a problem in the ToHexString operator to allow a maximum 200 12132character 12133string to be produced. 12134 12135Fixed a problem in the internal string-to-buffer and buffer-to-buffer 12136copy 12137routine where the length of the resulting buffer was not truncated to the 12138new size (if the target buffer already existed). 12139 12140Code and Data Size: Current and previous core subsystem library sizes are 12141shown below. These are the code and data sizes for the acpica.lib 12142produced 12143by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12144any ACPI driver or OSPM code. The debug version of the code includes the 12145debug output trace mechanism and has a much larger code and data size. 12146Note 12147that these values will vary depending on the efficiency of the compiler 12148and 12149the 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 121592) iASL Compiler/Disassembler: 12160 12161Implemented the new ACPI 3.0 resource template macros - DWordSpace, 12162ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace. 12163Includes support in the disassembler. 12164 12165Implemented support for the new (ACPI 3.0) parameter to the Register 12166macro, 12167AccessSize. 12168 12169Fixed a problem where the _HE resource name for the Interrupt macro was 12170referencing bit 0 instead of bit 1. 12171 12172Implemented check for maximum 255 interrupts in the Interrupt macro. 12173 12174Fixed a problem with the predefined resource descriptor names where 12175incorrect AML code was generated if the offset within the resource buffer 12176was 0 or 1. The optimizer shortened the AML code to a single byte opcode 12177but did not update the surrounding package lengths. 12178 12179Changes to the Dma macro: All channels within the channel list must be 12180in 12181the range 0-7. Maximum 8 channels can be specified. BusMaster operand is 12182optional (default is BusMaster). 12183 12184Implemented check for maximum 7 data bytes for the VendorShort macro. 12185 12186The ReadWrite parameter is now optional for the Memory32 and similar 12187macros. 12188 12189---------------------------------------- 1219003 December 2004. Summary of changes for version 20041203: 12191 121921) ACPI CA Core Subsystem: 12193 12194The low-level field insertion/extraction code (exfldio) has been 12195completely 12196rewritten to eliminate unnecessary complexity, bugs, and boundary 12197conditions. 12198 12199Fixed a problem in the ToInteger, ToBuffer, ToHexString, and 12200ToDecimalString 12201operators where the input operand could be inadvertently deleted if no 12202conversion was necessary (e.g., if the input to ToInteger was an Integer 12203object.) 12204 12205Fixed a problem with the ToDecimalString and ToHexString where an 12206incorrect 12207exception code was returned if the resulting string would be > 200 chars. 12208AE_STRING_LIMIT is now returned. 12209 12210Fixed a problem with the Concatenate operator where AE_OK was always 12211returned, even if the operation failed. 12212 12213Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128 12214semaphores to be allocated. 12215 12216Code and Data Size: Current and previous core subsystem library sizes are 12217shown below. These are the code and data sizes for the acpica.lib 12218produced 12219by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12220any ACPI driver or OSPM code. The debug version of the code includes the 12221debug output trace mechanism and has a much larger code and data size. 12222Note 12223that these values will vary depending on the efficiency of the compiler 12224and 12225the 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 122352) iASL Compiler/Disassembler: 12236 12237Fixed typechecking for the ObjectType and SizeOf operators. Problem was 12238recently introduced in 20041119. 12239 12240Fixed a problem with the ToUUID macro where the upper nybble of each 12241buffer 12242byte was inadvertently set to zero. 12243 12244---------------------------------------- 1224519 November 2004. Summary of changes for version 20041119: 12246 122471) ACPI CA Core Subsystem: 12248 12249Fixed a problem in the internal ConvertToInteger routine where new 12250integers 12251were not truncated to 32 bits for 32-bit ACPI tables. This routine 12252converts 12253buffers and strings to integers. 12254 12255Implemented support to store a value to an Index() on a String object. 12256This 12257is an ACPI 2.0 feature that had not yet been implemented. 12258 12259Implemented new behavior for storing objects to individual package 12260elements 12261(via the Index() operator). The previous behavior was to invoke the 12262implicit 12263conversion rules if an object was already present at the index. The new 12264behavior is to simply delete any existing object and directly store the 12265new 12266object. Although the ACPI specification seems unclear on this subject, 12267other 12268ACPI implementations behave in this manner. (This is the root of the 12269AE_BAD_HEX_CONSTANT issue.) 12270 12271Modified the RSDP memory scan mechanism to support the extended checksum 12272for 12273ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid 12274RSDP signature is found with a valid checksum. 12275 12276Code and Data Size: Current and previous core subsystem library sizes are 12277shown below. These are the code and data sizes for the acpica.lib 12278produced 12279by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12280any ACPI driver or OSPM code. The debug version of the code includes the 12281debug output trace mechanism and has a much larger code and data size. 12282Note 12283that these values will vary depending on the efficiency of the compiler 12284and 12285the 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 122952) iASL Compiler/Disassembler: 12296 12297Fixed a missing semicolon in the aslcompiler.y file. 12298 12299---------------------------------------- 1230005 November 2004. Summary of changes for version 20041105: 12301 123021) ACPI CA Core Subsystem: 12303 12304Implemented support for FADT revision 2. This was an interim table 12305(between 12306ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register. 12307 12308Implemented optional support to allow uninitialized LocalX and ArgX 12309variables in a control method. The variables are initialized to an 12310Integer 12311object with a value of zero. This support is enabled by setting the 12312AcpiGbl_EnableInterpreterSlack flag to TRUE. 12313 12314Implemented support for Integer objects for the SizeOf operator. Either 123154 12316or 8 is returned, depending on the current integer size (32-bit or 64- 12317bit, 12318depending on the parent table revision). 12319 12320Fixed a problem in the implementation of the SizeOf and ObjectType 12321operators 12322where the operand was resolved to a value too early, causing incorrect 12323return values for some objects. 12324 12325Fixed some possible memory leaks during exceptional conditions. 12326 12327Code and Data Size: Current and previous core subsystem library sizes are 12328shown below. These are the code and data sizes for the acpica.lib 12329produced 12330by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12331any ACPI driver or OSPM code. The debug version of the code includes the 12332debug output trace mechanism and has a much larger code and data size. 12333Note 12334that these values will vary depending on the efficiency of the compiler 12335and 12336the 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 123462) iASL Compiler/Disassembler: 12347 12348Implemented support for all ACPI 3.0 reserved names and methods. 12349 12350Implemented all ACPI 3.0 grammar elements in the front-end, including 12351support for semicolons. 12352 12353Implemented the ACPI 3.0 Function() and ToUUID() macros 12354 12355Fixed a problem in the disassembler where a Scope() operator would not be 12356emitted properly if the target of the scope was in another table. 12357 12358---------------------------------------- 1235915 October 2004. Summary of changes for version 20041015: 12360 12361Note: ACPI CA is currently undergoing an in-depth and complete formal 12362evaluation to test/verify the following areas. Other suggestions are 12363welcome. This will result in an increase in the frequency of releases and 12364the 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 123751) ACPI CA Core Subsystem: 12376 12377Fixed two alignment issues on 64-bit platforms - within debug statements 12378in 12379AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the 12380Address 12381field within the non-aligned ACPI generic address structure. 12382 12383Fixed a problem in the Increment and Decrement operators where incorrect 12384operand resolution could result in the inadvertent modification of the 12385original integer when the integer is passed into another method as an 12386argument and the arg is then incremented/decremented. 12387 12388Fixed a problem in the FromBCD operator where the upper 32-bits of a 64- 12389bit 12390BCD number were truncated during conversion. 12391 12392Fixed a problem in the ToDecimal operator where the length of the 12393resulting 12394string could be set incorrectly too long if the input operand was a 12395Buffer 12396object. 12397 12398Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte 12399(0) 12400within a buffer would prematurely terminate a compare between buffer 12401objects. 12402 12403Added a check for string overflow (>200 characters as per the ACPI 12404specification) during the Concatenate operator with two string operands. 12405 12406Code and Data Size: Current and previous core subsystem library sizes are 12407shown below. These are the code and data sizes for the acpica.lib 12408produced 12409by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12410any ACPI driver or OSPM code. The debug version of the code includes the 12411debug output trace mechanism and has a much larger code and data size. 12412Note 12413that these values will vary depending on the efficiency of the compiler 12414and 12415the 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 124262) iASL Compiler/Disassembler: 12427 12428Allow the use of the ObjectType operator on uninitialized Locals and Args 12429(returns 0 as per the ACPI specification). 12430 12431Fixed a problem where the compiler would fault if there was a syntax 12432error 12433in the FieldName of all of the various CreateXXXField operators. 12434 12435Disallow the use of lower case letters within the EISAID macro, as per 12436the 12437ACPI specification. All EISAID strings must be of the form "UUUNNNN" 12438Where 12439U is an uppercase letter and N is a hex digit. 12440 12441 12442---------------------------------------- 1244306 October 2004. Summary of changes for version 20041006: 12444 124451) ACPI CA Core Subsystem: 12446 12447Implemented support for the ACPI 3.0 Timer operator. This ASL function 12448implements a 64-bit timer with 100 nanosecond granularity. 12449 12450Defined a new OSL interface, AcpiOsGetTimer. This interface is used to 12451implement the ACPI 3.0 Timer operator. This allows the host OS to 12452implement 12453the timer with the best clock available. Also, it keeps the core 12454subsystem 12455out of the clock handling business, since the host OS (usually) performs 12456this function. 12457 12458Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write) 12459functions use a 64-bit address which is part of the packed ACPI Generic 12460Address Structure. Since the structure is non-aligned, the alignment 12461macros 12462are now used to extract the address to a local variable before use. 12463 12464Fixed a problem where the ToInteger operator assumed all input strings 12465were 12466hexadecimal. The operator now handles both decimal strings and hex 12467strings 12468(prefixed with "0x"). 12469 12470Fixed a problem where the string length in the string object created as a 12471result of the internal ConvertToString procedure could be incorrect. This 12472potentially affected all implicit conversions and also the 12473ToDecimalString 12474and ToHexString operators. 12475 12476Fixed two problems in the ToString operator. If the length parameter was 12477zero, an incorrect string object was created and the value of the input 12478length parameter was inadvertently changed from zero to Ones. 12479 12480Fixed a problem where the optional ResourceSource string in the 12481ExtendedIRQ 12482resource macro was ignored. 12483 12484Simplified the interfaces to the internal division functions, reducing 12485code 12486size and complexity. 12487 12488Code and Data Size: Current and previous core subsystem library sizes are 12489shown below. These are the code and data sizes for the acpica.lib 12490produced 12491by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12492any ACPI driver or OSPM code. The debug version of the code includes the 12493debug output trace mechanism and has a much larger code and data size. 12494Note 12495that these values will vary depending on the efficiency of the compiler 12496and 12497the 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 125072) iASL Compiler/Disassembler: 12508 12509Implemented support for the ACPI 3.0 Timer operator. 12510 12511Fixed a problem where the Default() operator was inadvertently ignored in 12512a 12513Switch/Case block. This was a problem in the translation of the Switch 12514statement to If...Else pairs. 12515 12516Added support to allow a standalone Return operator, with no parentheses 12517(or 12518operands). 12519 12520Fixed a problem with code generation for the ElseIf operator where the 12521translated Else...If parse tree was improperly constructed leading to the 12522loss of some code. 12523 12524---------------------------------------- 1252522 September 2004. Summary of changes for version 20040922: 12526 125271) ACPI CA Core Subsystem: 12528 12529Fixed a problem with the implementation of the LNot() operator where 12530"Ones" 12531was not returned for the TRUE case. Changed the code to return Ones 12532instead 12533of (!Arg) which was usually 1. This change affects iASL constant folding 12534for 12535this operator also. 12536 12537Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was 12538not 12539initialized properly -- Now zero the entire buffer in this case where the 12540buffer already exists. 12541 12542Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32 12543Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all 12544related code considerably. This will require changes/updates to all OS 12545interface layers (OSLs.) 12546 12547Implemented a new external interface, AcpiInstallExceptionHandler, to 12548allow 12549a system exception handler to be installed. This handler is invoked upon 12550any 12551run-time exception that occurs during control method execution. 12552 12553Added support for the DSDT in AcpiTbFindTable. This allows the 12554DataTableRegion() operator to access the local copy of the DSDT. 12555 12556Code and Data Size: Current and previous core subsystem library sizes are 12557shown below. These are the code and data sizes for the acpica.lib 12558produced 12559by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12560any ACPI driver or OSPM code. The debug version of the code includes the 12561debug output trace mechanism and has a much larger code and data size. 12562Note 12563that these values will vary depending on the efficiency of the compiler 12564and 12565the 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 125752) iASL Compiler/Disassembler: 12576 12577Fixed a problem with constant folding and the LNot operator. LNot was 12578returning 1 in the TRUE case, not Ones as per the ACPI specification. 12579This 12580could result in the generation of an incorrect folded/reduced constant. 12581 12582End-Of-File is now allowed within a "//"-style comment. A parse error no 12583longer occurs if such a comment is at the very end of the input ASL 12584source 12585file. 12586 12587Implemented the "-r" option to override the Revision in the table header. 12588The initial use of this option will be to simplify the evaluation of the 12589AML 12590interpreter by allowing a single ASL source module to be compiled for 12591either 1259232-bit or 64-bit integers. 12593 12594 12595---------------------------------------- 1259627 August 2004. Summary of changes for version 20040827: 12597 125981) ACPI CA Core Subsystem: 12599 12600- Implemented support for implicit object conversion in the non-numeric 12601logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual, 12602and 12603LNotEqual.) Any combination of Integers/Strings/Buffers may now be used; 12604the second operand is implicitly converted on the fly to match the type 12605of 12606the first operand. For example: 12607 12608 LEqual (Source1, Source2) 12609 12610Source1 and Source2 must each evaluate to an integer, a string, or a 12611buffer. 12612The data type of Source1 dictates the required type of Source2. Source2 12613is 12614implicitly converted if necessary to match the type of Source1. 12615 12616- Updated and corrected the behavior of the string conversion support. 12617The 12618rules concerning conversion of buffers to strings (according to the ACPI 12619specification) are as follows: 12620 12621ToDecimalString - explicit byte-wise conversion of buffer to string of 12622decimal values (0-255) separated by commas. ToHexString - explicit byte- 12623wise 12624conversion of buffer to string of hex values (0-FF) separated by commas. 12625ToString - explicit byte-wise conversion of buffer to string. Byte-by- 12626byte 12627copy with no transform except NULL terminated. Any other implicit buffer- 12628to- 12629string conversion - byte-wise conversion of buffer to string of hex 12630values 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 12636was 12637one byte too short in the case of a node in the root scope. This could 12638cause a fault during debug output. 12639 12640- Code and Data Size: Current and previous core subsystem library sizes 12641are 12642shown below. These are the code and data sizes for the acpica.lib 12643produced 12644by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12645any ACPI driver or OSPM code. The debug version of the code includes the 12646debug output trace mechanism and has a much larger code and data size. 12647Note 12648that these values will vary depending on the efficiency of the compiler 12649and 12650the 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 126602) iASL Compiler/Disassembler: 12661 12662- Fixed a Linux generation error. 12663 12664 12665---------------------------------------- 1266616 August 2004. Summary of changes for version 20040816: 12667 126681) ACPI CA Core Subsystem: 12669 12670Designed and implemented support within the AML interpreter for the so- 12671called "implicit return". This support returns the result of the last 12672ASL 12673operation within a control method, in the absence of an explicit Return() 12674operator. A few machines depend on this behavior, even though it is not 12675explicitly supported by the ASL language. It is optional support that 12676can 12677be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag. 12678 12679Removed support for the PCI_Config address space from the internal low 12680level 12681hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This 12682support was not used internally, and would not work correctly anyway 12683because 12684the PCI bus number and segment number were not supported. There are 12685separate interfaces for PCI configuration space access because of the 12686unique 12687interface. 12688 12689Code and Data Size: Current and previous core subsystem library sizes are 12690shown below. These are the code and data sizes for the acpica.lib 12691produced 12692by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12693any ACPI driver or OSPM code. The debug version of the code includes the 12694debug output trace mechanism and has a much larger code and data size. 12695Note 12696that these values will vary depending on the efficiency of the compiler 12697and 12698the 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 127082) iASL Compiler/Disassembler: 12709 12710Fixed a problem where constants in ASL expressions at the root level (not 12711within a control method) could be inadvertently truncated during code 12712generation. This problem was introduced in the 20040715 release. 12713 12714 12715---------------------------------------- 1271615 July 2004. Summary of changes for version 20040715: 12717 127181) ACPI CA Core Subsystem: 12719 12720Restructured the internal HW GPE interfaces to pass/track the current 12721state 12722of interrupts (enabled/disabled) in order to avoid possible deadlock and 12723increase flexibility of the interfaces. 12724 12725Implemented a "lexicographical compare" for String and Buffer objects 12726within 12727the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual - 12728- 12729as per further clarification to the ACPI specification. Behavior is 12730similar 12731to C library "strcmp". 12732 12733Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable 12734external function. In the 32-bit non-debug case, the stack use has been 12735reduced from 168 bytes to 32 bytes. 12736 12737Deployed a new run-time configuration flag, 12738AcpiGbl_EnableInterpreterSlack, 12739whose purpose is to allow the AML interpreter to forgive certain bad AML 12740constructs. Default setting is FALSE. 12741 12742Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field 12743IO 12744support code. If enabled, it allows field access to go beyond the end of 12745a 12746region definition if the field is within the region length rounded up to 12747the 12748next access width boundary (a common coding error.) 12749 12750Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to 12751ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also, 12752these 12753symbols are lowercased by the latest version of the AcpiSrc tool. 12754 12755The prototypes for the PCI interfaces in acpiosxf.h have been updated to 12756rename "Register" to simply "Reg" to prevent certain compilers from 12757complaining. 12758 12759Code and Data Size: Current and previous core subsystem library sizes are 12760shown below. These are the code and data sizes for the acpica.lib 12761produced 12762by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12763any ACPI driver or OSPM code. The debug version of the code includes the 12764debug output trace mechanism and has a much larger code and data size. 12765Note 12766that these values will vary depending on the efficiency of the compiler 12767and 12768the 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 127782) iASL Compiler/Disassembler: 12779 12780Implemented full support for Package objects within the Case() operator. 12781Note: The Break() operator is currently not supported within Case blocks 12782(TermLists) as there is some question about backward compatibility with 12783ACPI 127841.0 interpreters. 12785 12786 12787Fixed a problem where complex terms were not supported properly within 12788the 12789Switch() operator. 12790 12791Eliminated extraneous warning for compiler-emitted reserved names of the 12792form "_T_x". (Used in Switch/Case operators.) 12793 12794Eliminated optimization messages for "_T_x" objects and small constants 12795within the DefinitionBlock operator. 12796 12797 12798---------------------------------------- 1279915 June 2004. Summary of changes for version 20040615: 12800 128011) ACPI CA Core Subsystem: 12802 12803Implemented support for Buffer and String objects (as per ACPI 2.0) for 12804the 12805following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 12806LLessEqual. 12807 12808All directory names in the entire source package are lower case, as they 12809were in earlier releases. 12810 12811Implemented "Disassemble" command in the AML debugger that will 12812disassemble 12813a single control method. 12814 12815Code and Data Size: Current and previous core subsystem library sizes are 12816shown below. These are the code and data sizes for the acpica.lib 12817produced 12818by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12819any ACPI driver or OSPM code. The debug version of the code includes the 12820debug output trace mechanism and has a much larger code and data size. 12821Note 12822that these values will vary depending on the efficiency of the compiler 12823and 12824the 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 128352) iASL Compiler/Disassembler: 12836 12837Implemented support for Buffer and String objects (as per ACPI 2.0) for 12838the 12839following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 12840LLessEqual. 12841 12842All directory names in the entire source package are lower case, as they 12843were in earlier releases. 12844 12845Fixed a fault when using the -g or -d<nofilename> options if the FADT was 12846not found. 12847 12848Fixed an issue with the Windows version of the compiler where later 12849versions 12850of 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 - 12852d<nofilename> options. The compiler now looks for both strings as 12853necessary. 12854 12855Fixed a problem with compiler namepath optimization where a namepath 12856within 12857the Scope() operator could not be optimized if the namepath was a subpath 12858of 12859the current scope path. 12860 12861---------------------------------------- 1286227 May 2004. Summary of changes for version 20040527: 12863 128641) ACPI CA Core Subsystem: 12865 12866Completed a new design and implementation for EBDA (Extended BIOS Data 12867Area) 12868support in the RSDP scan code. The original code improperly scanned for 12869the 12870EBDA by simply scanning from memory location 0 to 0x400. The correct 12871method 12872is to first obtain the EBDA pointer from within the BIOS data area, then 12873scan 1K of memory starting at the EBDA pointer. There appear to be few 12874if 12875any machines that place the RSDP in the EBDA, however. 12876 12877Integrated a fix for a possible fault during evaluation of BufferField 12878arguments. Obsolete code that was causing the problem was removed. 12879 12880Found and fixed a problem in the Field Support Code where data could be 12881corrupted on a bit field read that starts on an aligned boundary but does 12882not end on an aligned boundary. Merged the read/write "datum length" 12883calculation code into a common procedure. 12884 12885Rolled in a couple of changes to the FreeBSD-specific header. 12886 12887 12888Code and Data Size: Current and previous core subsystem library sizes are 12889shown below. These are the code and data sizes for the acpica.lib 12890produced 12891by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12892any ACPI driver or OSPM code. The debug version of the code includes the 12893debug output trace mechanism and has a much larger code and data size. 12894Note 12895that these values will vary depending on the efficiency of the compiler 12896and 12897the 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 129072) iASL Compiler/Disassembler: 12908 12909Fixed a generation warning produced by some overly-verbose compilers for 12910a 1291164-bit constant. 12912 12913---------------------------------------- 1291414 May 2004. Summary of changes for version 20040514: 12915 129161) ACPI CA Core Subsystem: 12917 12918Fixed a problem where hardware GPE enable bits sometimes not set properly 12919during and after GPE method execution. Result of 04/27 changes. 12920 12921Removed extra "clear all GPEs" when sleeping/waking. 12922 12923Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single 12924AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above 12925to 12926the new AcpiEv* calls as appropriate. 12927 12928ACPI_OS_NAME was removed from the OS-specific headers. The default name 12929is 12930now "Microsoft Windows NT" for maximum compatibility. However this can 12931be 12932changed by modifying the acconfig.h file. 12933 12934Allow a single invocation of AcpiInstallNotifyHandler for a handler that 12935traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag. 12936 12937Run _INI methods on ThermalZone objects. This is against the ACPI 12938specification, but there is apparently ASL code in the field that has 12939these 12940_INI methods, and apparently "other" AML interpreters execute them. 12941 12942Performed a full 16/32/64 bit lint that resulted in some small changes. 12943 12944Added a sleep simulation command to the AML debugger to test sleep code. 12945 12946Code and Data Size: Current and previous core subsystem library sizes are 12947shown below. These are the code and data sizes for the acpica.lib 12948produced 12949by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12950any ACPI driver or OSPM code. The debug version of the code includes the 12951debug output trace mechanism and has a much larger code and data size. 12952Note 12953that these values will vary depending on the efficiency of the compiler 12954and 12955the 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---------------------------------------- 1296527 April 2004. Summary of changes for version 20040427: 12966 129671) ACPI CA Core Subsystem: 12968 12969Completed a major overhaul of the GPE handling within ACPI CA. There are 12970now three types of GPEs: wake-only, runtime-only, and combination 12971wake/run. 12972The only GPEs allowed to be combination wake/run are for button-style 12973devices such as a control-method power button, control-method sleep 12974button, 12975or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are 12976not 12977referenced by any _PRW methods are marked for "runtime" and hardware 12978enabled. 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 12981have been specifically enabled for wake via the AcpiEnableGpe interface 12982will 12983actually be hardware enabled. 12984 12985A new external interface has been added, AcpiSetGpeType(), that is meant 12986to 12987be used by device drivers to force a GPE to a particular type. It will 12988be 12989especially useful for the drivers for the button devices mentioned above. 12990 12991Completed restructuring of the ACPI CA initialization sequence so that 12992default operation region handlers are installed before GPEs are 12993initialized 12994and the _PRW methods are executed. This will prevent errors when the 12995_PRW 12996methods attempt to access system memory or I/O space. 12997 12998GPE enable/disable no longer reads the GPE enable register. We now keep 12999the 13000enable info for runtime and wake separate and in the GPE_EVENT_INFO. We 13001thus no longer depend on the hardware to maintain these bits. 13002 13003Always clear the wake status and fixed/GPE status bits before sleep, even 13004for state S5. 13005 13006Improved the AML debugger output for displaying the GPE blocks and their 13007current status. 13008 13009Added new strings for the _OSI method, of the form "Windows 2001 SPx" 13010where 13011x = 0,1,2,3,4. 13012 13013Fixed a problem where the physical address was incorrectly calculated 13014when 13015the Load() operator was used to directly load from an Operation Region 13016(vs. 13017loading from a Field object.) Also added check for minimum table length 13018for 13019this case. 13020 13021Fix for multiple mutex acquisition. Restore original thread SyncLevel on 13022mutex release. 13023 13024Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for 13025consistency with the other fields returned. 13026 13027Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such 13028structure for each GPE in the system, so the size of this structure is 13029important. 13030 13031CPU stack requirement reduction: Cleaned up the method execution and 13032object 13033evaluation paths so that now a parameter structure is passed, instead of 13034copying the various method parameters over and over again. 13035 13036In evregion.c: Correctly exit and reenter the interpreter region if and 13037only if dispatching an operation region request to a user-installed 13038handler. 13039Do not exit/reenter when dispatching to a default handler (e.g., default 13040system memory or I/O handlers) 13041 13042 13043Notes for updating drivers for the new GPE support. The following 13044changes 13045must be made to ACPI-related device drivers that are attached to one or 13046more 13047GPEs: (This information will be added to the ACPI CA Programmer 13048Reference.) 13049 130501) AcpiInstallGpeHandler no longer automatically enables the GPE, you 13051must 13052explicitly call AcpiEnableGpe. 130532) There is a new interface called AcpiSetGpeType. This should be called 13054before enabling the GPE. Also, this interface will automatically disable 13055the GPE if it is currently enabled. 130563) AcpiEnableGpe no longer supports a GPE type flag. 13057 13058Specific drivers that must be changed: 130591) EC driver: 13060 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED, 13061AeGpeHandler, NULL); 13062 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME); 13063 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR); 13064 130652) Button Drivers (Power, Lid, Sleep): 13066Run _PRW method under parent device 13067If _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 13072For all other devices that have _PRWs, we automatically set the GPE type 13073to 13074ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled. 13075This 13076must be done on a selective basis, usually requiring some kind of user 13077app 13078to allow the user to pick the wake devices. 13079 13080 13081Code and Data Size: Current and previous core subsystem library sizes are 13082shown below. These are the code and data sizes for the acpica.lib 13083produced 13084by the Microsoft Visual C++ 6.0 compiler, and these values do not include 13085any ACPI driver or OSPM code. The debug version of the code includes the 13086debug output trace mechanism and has a much larger code and data size. 13087Note 13088that these values will vary depending on the efficiency of the compiler 13089and 13090the 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---------------------------------------- 1310302 April 2004. Summary of changes for version 20040402: 13104 131051) ACPI CA Core Subsystem: 13106 13107Fixed an interpreter problem where an indirect store through an ArgX 13108parameter was incorrectly applying the "implicit conversion rules" during 13109the store. From the ACPI specification: "If the target is a method local 13110or 13111argument (LocalX or ArgX), no conversion is performed and the result is 13112stored directly to the target". The new behavior is to disable implicit 13113conversion during ALL stores to an ArgX. 13114 13115Changed the behavior of the _PRW method scan to ignore any and all errors 13116returned by a given _PRW. This prevents the scan from aborting from the 13117failure of any single _PRW. 13118 13119Moved the runtime configuration parameters from the global init procedure 13120to 13121static variables in acglobal.h. This will allow the host to override the 13122default values easily. 13123 13124Code and Data Size: Current and previous core subsystem library sizes are 13125shown below. These are the code and data sizes for the acpica.lib 13126produced 13127by the Microsoft Visual C++ 6.0 compiler, and these values do not include 13128any ACPI driver or OSPM code. The debug version of the code includes the 13129debug output trace mechanism and has a much larger code and data size. 13130Note 13131that these values will vary depending on the efficiency of the compiler 13132and 13133the 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 131432) iASL Compiler/Disassembler: 13144 13145iASL now fully disassembles SSDTs. However, External() statements are 13146not 13147generated automatically for unresolved symbols at this time. This is a 13148planned feature for future implementation. 13149 13150Fixed a scoping problem in the disassembler that occurs when the type of 13151the 13152target of a Scope() operator is overridden. This problem caused an 13153incorrectly nested internal namespace to be constructed. 13154 13155Any warnings or errors that are emitted during disassembly are now 13156commented 13157out automatically so that the resulting file can be recompiled without 13158any 13159hand editing. 13160 13161---------------------------------------- 1316226 March 2004. Summary of changes for version 20040326: 13163 131641) ACPI CA Core Subsystem: 13165 13166Implemented 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 13168identified as a WAKE GPE and by default will no longer be enabled at 13169runtime. Previously, we were blindly enabling all GPEs with a 13170corresponding 13171_Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway. 13172We 13173believe this has been the cause of thousands of "spurious" GPEs on some 13174systems. 13175 13176This new GPE behavior is can be reverted to the original behavior (enable 13177ALL GPEs at runtime) via a runtime flag. 13178 13179Fixed a problem where aliased control methods could not access objects 13180properly. The proper scope within the namespace was not initialized 13181(transferred to the target of the aliased method) before executing the 13182target method. 13183 13184Fixed a potential race condition on internal object deletion on the 13185return 13186object in AcpiEvaluateObject. 13187 13188Integrated a fix for resource descriptors where both _MEM and _MTP were 13189being extracted instead of just _MEM. (i.e. bitmask was incorrectly too 13190wide, 0x0F instead of 0x03.) 13191 13192Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName, 13193preventing 13194a 13195fault in some cases. 13196 13197Updated Notify() values for debug statements in evmisc.c 13198 13199Return proper status from AcpiUtMutexInitialize, not just simply AE_OK. 13200 13201Code and Data Size: Current and previous core subsystem library sizes are 13202shown below. These are the code and data sizes for the acpica.lib 13203produced 13204by the Microsoft Visual C++ 6.0 compiler, and these values do not include 13205any ACPI driver or OSPM code. The debug version of the code includes the 13206debug output trace mechanism and has a much larger code and data size. 13207Note 13208that these values will vary depending on the efficiency of the compiler 13209and 13210the 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---------------------------------------- 1322111 March 2004. Summary of changes for version 20040311: 13222 132231) ACPI CA Core Subsystem: 13224 13225Fixed a problem where errors occurring during the parse phase of control 13226method execution did not abort cleanly. For example, objects created and 13227installed in the namespace were not deleted. This caused all subsequent 13228invocations of the method to return the AE_ALREADY_EXISTS exception. 13229 13230Implemented a mechanism to force a control method to "Serialized" 13231execution 13232if the method attempts to create namespace objects. (The root of the 13233AE_ALREADY_EXISTS problem.) 13234 13235Implemented support for the predefined _OSI "internal" control method. 13236Initial supported strings are "Linux", "Windows 2000", "Windows 2001", 13237and 13238"Windows 2001.1", and can be easily upgraded for new strings as 13239necessary. 13240This feature will allow "other" operating systems to execute the fully 13241tested, "Windows" code path through the ASL code 13242 13243Global Lock Support: Now allows multiple acquires and releases with any 13244internal thread. Removed concept of "owning thread" for this special 13245mutex. 13246 13247Fixed two functions that were inappropriately declaring large objects on 13248the 13249CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage 13250during 13251method execution considerably. 13252 13253Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the 13254S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT. 13255 13256Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs 13257defined on the machine. 13258 13259Implemented two runtime options: One to force all control method 13260execution 13261to "Serialized" to mimic Windows behavior, another to disable _OSI 13262support 13263if it causes problems on a given machine. 13264 13265Code and Data Size: Current and previous core subsystem library sizes are 13266shown below. These are the code and data sizes for the acpica.lib 13267produced 13268by the Microsoft Visual C++ 6.0 compiler, and these values do not include 13269any ACPI driver or OSPM code. The debug version of the code includes the 13270debug output trace mechanism and has a much larger code and data size. 13271Note 13272that these values will vary depending on the efficiency of the compiler 13273and 13274the 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 132832) iASL Compiler/Disassembler: 13284 13285Fixed an array size problem for FreeBSD that would cause the compiler to 13286fault. 13287 13288---------------------------------------- 1328920 February 2004. Summary of changes for version 20040220: 13290 13291 132921) ACPI CA Core Subsystem: 13293 13294Implemented execution of _SxD methods for Device objects in the 13295GetObjectInfo interface. 13296 13297Fixed calls to _SST method to pass the correct arguments. 13298 13299Added a call to _SST on wake to restore to "working" state. 13300 13301Check for End-Of-Buffer failure case in the WalkResources interface. 13302 13303Integrated fix for 64-bit alignment issue in acglobal.h by moving two 13304structures to the beginning of the file. 13305 13306After wake, clear GPE status register(s) before enabling GPEs. 13307 13308After wake, clear/enable power button. (Perhaps we should clear/enable 13309all 13310fixed events upon wake.) 13311 13312Fixed a couple of possible memory leaks in the Namespace manager. 13313 13314Integrated latest acnetbsd.h file. 13315 13316---------------------------------------- 1331711 February 2004. Summary of changes for version 20040211: 13318 13319 133201) ACPI CA Core Subsystem: 13321 13322Completed investigation and implementation of the call-by-reference 13323mechanism for control method arguments. 13324 13325Fixed a problem where a store of an object into an indexed package could 13326fail if the store occurs within a different method than the method that 13327created the package. 13328 13329Fixed a problem where the ToDecimal operator could return incorrect 13330results. 13331 13332Fixed a problem where the CopyObject operator could fail on some of the 13333more 13334obscure objects (e.g., Reference objects.) 13335 13336Improved the output of the Debug object to display buffer, package, and 13337index objects. 13338 13339Fixed a problem where constructs of the form "RefOf (ArgX)" did not 13340return 13341the expected result. 13342 13343Added permanent ACPI_REPORT_ERROR macros for all instances of the 13344ACPI_AML_INTERNAL exception. 13345 13346Integrated latest version of acfreebsd.h 13347 13348---------------------------------------- 1334916 January 2004. Summary of changes for version 20040116: 13350 13351The purpose of this release is primarily to update the copyright years in 13352each module, thus causing a huge number of diffs. There are a few small 13353functional changes, however. 13354 133551) ACPI CA Core Subsystem: 13356 13357Improved error messages when there is a problem finding one or more of 13358the 13359required base ACPI tables 13360 13361Reintroduced the definition of APIC_HEADER in actbl.h 13362 13363Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h) 13364 13365Removed extraneous reference to NewObj in dsmthdat.c 13366 133672) iASL compiler 13368 13369Fixed a problem introduced in December that disabled the correct 13370disassembly 13371of Resource Templates 13372 13373 13374---------------------------------------- 1337503 December 2003. Summary of changes for version 20031203: 13376 133771) ACPI CA Core Subsystem: 13378 13379Changed the initialization of Operation Regions during subsystem 13380init to perform two entire walks of the ACPI namespace; The first 13381to initialize the regions themselves, the second to execute the 13382_REG methods. This fixed some interdependencies across _REG 13383methods found on some machines. 13384 13385Fixed a problem where a Store(Local0, Local1) could simply update 13386the object reference count, and not create a new copy of the 13387object if the Local1 is uninitialized. 13388 13389Implemented support for the _SST reserved method during sleep 13390transitions. 13391 13392Implemented support to clear the SLP_TYP and SLP_EN bits when 13393waking up, this is apparently required by some machines. 13394 13395When sleeping, clear the wake status only if SleepState is not S5. 13396 13397Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect 13398pointer arithmetic advanced a string pointer too far. 13399 13400Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer 13401could be returned if the requested table has not been loaded. 13402 13403Within the support for IRQ resources, restructured the handling of 13404the active and edge/level bits. 13405 13406Fixed a few problems in AcpiPsxExecute() where memory could be 13407leaked under certain error conditions. 13408 13409Improved error messages for the cases where the ACPI mode could 13410not be entered. 13411 13412Code and Data Size: Current and previous core subsystem library 13413sizes are shown below. These are the code and data sizes for the 13414acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 13415these values do not include any ACPI driver or OSPM code. The 13416debug version of the code includes the debug output trace 13417mechanism and has a much larger code and data size. Note that 13418these values will vary depending on the efficiency of the compiler 13419and 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 134282) iASL Compiler/Disassembler: 13429 13430Implemented a fix for the iASL disassembler where a bad index was 13431generated. This was most noticeable on 64-bit platforms 13432 13433 13434---------------------------------------- 1343529 October 2003. Summary of changes for version 20031029: 13436 134371) ACPI CA Core Subsystem: 13438 13439 13440Fixed a problem where a level-triggered GPE with an associated 13441_Lxx control method was incorrectly cleared twice. 13442 13443Fixed a problem with the Field support code where an access can 13444occur beyond the end-of-region if the field is non-aligned but 13445extends to the very end of the parent region (resulted in an 13446AE_AML_REGION_LIMIT exception.) 13447 13448Fixed a problem with ACPI Fixed Events where an RT Clock handler 13449would not get invoked on an RTC event. The RTC event bitmasks for 13450the PM1 registers were not being initialized properly. 13451 13452Implemented support for executing _STA and _INI methods for 13453Processor objects. Although this is currently not part of the 13454ACPI specification, there is existing ASL code that depends on the 13455init-time execution of these methods. 13456 13457Implemented and deployed a GetDescriptorName function to decode 13458the various types of internal descriptors. Guards against null 13459descriptors during debug output also. 13460 13461Implemented and deployed a GetNodeName function to extract the 4- 13462character namespace node name. This function simplifies the debug 13463and error output, as well as guarding against null pointers during 13464output. 13465 13466Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to 13467simplify the debug and error output of 64-bit integers. This 13468macro replaces the HIDWORD and LODWORD macros for dumping these 13469integers. 13470 13471Updated the implementation of the Stall() operator to only call 13472AcpiOsStall(), and also return an error if the operand is larger 13473than 255. This preserves the required behavior of not 13474relinquishing the processor, as would happen if AcpiOsSleep() was 13475called for "long stalls". 13476 13477Constructs of the form "Store(LocalX,LocalX)" where LocalX is not 13478initialized are now treated as NOOPs. 13479 13480Cleaned up a handful of warnings during 64-bit generation. 13481 13482Fixed a reported error where and incorrect GPE number was passed 13483to the GPE dispatch handler. This value is only used for error 13484output, however. Used this opportunity to clean up and streamline 13485the GPE dispatch code. 13486 13487Code and Data Size: Current and previous core subsystem library 13488sizes are shown below. These are the code and data sizes for the 13489acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 13490these values do not include any ACPI driver or OSPM code. The 13491 13492debug version of the code includes the debug output trace 13493mechanism and has a much larger code and data size. Note that 13494these values will vary depending on the efficiency of the compiler 13495and 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 135052) iASL Compiler/Disassembler: 13506 13507Updated the iASL compiler to return an error if the operand to the 13508Stall() operator is larger than 255. 13509 13510 13511---------------------------------------- 1351202 October 2003. Summary of changes for version 20031002: 13513 13514 135151) ACPI CA Core Subsystem: 13516 13517Fixed a problem with Index Fields where the index was not 13518incremented for fields that require multiple writes to the 13519index/data registers (Fields that are wider than the data 13520register.) 13521 13522Fixed a problem with all Field objects where a write could go 13523beyond the end-of-field if the field was larger than the access 13524granularity and therefore required multiple writes to complete the 13525request. An extra write beyond the end of the field could happen 13526inadvertently. 13527 13528Fixed a problem with Index Fields where a BUFFER_OVERFLOW error 13529would incorrectly be returned if the width of the Data Register 13530was larger than the specified field access width. 13531 13532Completed fixes for LoadTable() and Unload() and verified their 13533operation. Implemented full support for the "DdbHandle" object 13534throughout the ACPI CA subsystem. 13535 13536Implemented full support for the MADT and ECDT tables in the ACPI 13537CA header files. Even though these tables are not directly 13538consumed by ACPI CA, the header definitions are useful for ACPI 13539device drivers. 13540 13541Integrated resource descriptor fixes posted to the Linux ACPI 13542list. This included checks for minimum descriptor length, and 13543support for trailing NULL strings within descriptors that have 13544optional string elements. 13545 13546Code and Data Size: Current and previous core subsystem library 13547sizes are shown below. These are the code and data sizes for the 13548acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 13549these values do not include any ACPI driver or OSPM code. The 13550debug version of the code includes the debug output trace 13551mechanism and has a much larger code and data size. Note that 13552these values will vary depending on the efficiency of the compiler 13553and 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 135632) iASL Compiler: 13564 13565Implemented detection of non-ASCII characters within the input 13566source ASL file. This catches attempts to compile binary (AML) 13567files early in the compile, with an informative error message. 13568 13569Fixed a problem where the disassembler would fault if the output 13570filename could not be generated or if the output file could not be 13571opened. 13572 13573---------------------------------------- 1357418 September 2003. Summary of changes for version 20030918: 13575 13576 135771) ACPI CA Core Subsystem: 13578 13579Found and fixed a longstanding problem with the late execution of 13580the various deferred AML opcodes (such as Operation Regions, 13581Buffer Fields, Buffers, and Packages). If the name string 13582specified for the name of the new object placed the object in a 13583scope other than the current scope, the initialization/execution 13584of the opcode failed. The solution to this problem was to 13585implement a mechanism where the late execution of such opcodes 13586does not attempt to lookup/create the name a second time in an 13587incorrect scope. This fixes the "region size computed 13588incorrectly" problem. 13589 13590Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a 13591Global Lock AE_BAD_PARAMETER error. 13592 13593Fixed several 64-bit issues with prototypes, casting and data 13594types. 13595 13596Removed duplicate prototype from acdisasm.h 13597 13598Fixed an issue involving EC Operation Region Detach (Shaohua Li) 13599 13600Code and Data Size: Current and previous core subsystem library 13601sizes are shown below. These are the code and data sizes for the 13602acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 13603these values do not include any ACPI driver or OSPM code. The 13604debug version of the code includes the debug output trace 13605mechanism and has a much larger code and data size. Note that 13606these values will vary depending on the efficiency of the compiler 13607and 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 136182) Linux: 13619 13620Fixed the AcpiOsSleep implementation in osunixxf.c to pass the 13621correct sleep time in seconds. 13622 13623---------------------------------------- 1362414 July 2003. Summary of changes for version 20030619: 13625 136261) ACPI CA Core Subsystem: 13627 13628Parse SSDTs in order discovered, as opposed to reverse order 13629(Hrvoje Habjanic) 13630 13631Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas 13632Klausner, 13633 Nate Lawson) 13634 13635 136362) Linux: 13637 13638Dynamically allocate SDT list (suggested by Andi Kleen) 13639 13640proc function return value cleanups (Andi Kleen) 13641 13642Correctly handle NMI watchdog during long stalls (Andrew Morton) 13643 13644Make it so acpismp=force works (reported by Andrew Morton) 13645 13646 13647---------------------------------------- 1364819 June 2003. Summary of changes for version 20030619: 13649 136501) ACPI CA Core Subsystem: 13651 13652Fix To/FromBCD, eliminating the need for an arch-specific #define. 13653 13654Do not acquire a semaphore in the S5 shutdown path. 13655 13656Fix ex_digits_needed for 0. (Takayoshi Kochi) 13657 13658Fix sleep/stall code reversal. (Andi Kleen) 13659 13660Revert a change having to do with control method calling 13661semantics. 13662 136632) Linux: 13664 13665acpiphp update (Takayoshi Kochi) 13666 13667Export acpi_disabled for sonypi (Stelian Pop) 13668 13669Mention acpismp=force in config help 13670 13671Re-add acpitable.c and acpismp=force. This improves backwards 13672 13673compatibility and also cleans up the code to a significant degree. 13674 13675Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge) 13676 13677---------------------------------------- 1367822 May 2003. Summary of changes for version 20030522: 13679 136801) ACPI CA Core Subsystem: 13681 13682Found and fixed a reported problem where an AE_NOT_FOUND error 13683occurred occasionally during _BST evaluation. This turned out to 13684be an Owner ID allocation issue where a called method did not get 13685a new ID assigned to it. Eventually, (after 64k calls), the Owner 13686ID UINT16 would wraparound so that the ID would be the same as the 13687caller's and the called method would delete the caller's 13688namespace. 13689 13690Implemented extended error reporting for control methods that are 13691aborted due to a run-time exception. Output includes the exact 13692AML instruction that caused the method abort, a dump of the method 13693locals and arguments at the time of the abort, and a trace of all 13694nested control method calls. 13695 13696Modified the interpreter to allow the creation of buffers of zero 13697length from the AML code. Implemented new code to ensure that no 13698attempt is made to actually allocate a memory buffer (of length 13699zero) - instead, a simple buffer object with a NULL buffer pointer 13700and length zero is created. A warning is no longer issued when 13701the AML attempts to create a zero-length buffer. 13702 13703Implemented a workaround for the "leading asterisk issue" in 13704_HIDs, _UIDs, and _CIDs in the AML interpreter. One leading 13705asterisk is automatically removed if present in any HID, UID, or 13706CID strings. The iASL compiler will still flag this asterisk as 13707an error, however. 13708 13709Implemented full support for _CID methods that return a package of 13710multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface 13711now additionally returns a device _CID list if present. This 13712required a change to the external interface in order to pass an 13713ACPI_BUFFER object as a parameter since the _CID list is of 13714variable length. 13715 13716Fixed a problem with the new AE_SAME_HANDLER exception where 13717handler initialization code did not know about this exception. 13718 13719Code and Data Size: Current and previous core subsystem library 13720sizes are shown below. These are the code and data sizes for the 13721acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 13722these values do not include any ACPI driver or OSPM code. The 13723debug version of the code includes the debug output trace 13724mechanism and has a much larger code and data size. Note that 13725these values will vary depending on the efficiency of the compiler 13726and 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 137362) Linux: 13737 13738Fixed a bug in which we would reinitialize the ACPI interrupt 13739after it was already working, thus disabling all ACPI and the IRQs 13740for any other device sharing the interrupt. (Thanks to Stian 13741Jordet) 13742 13743Toshiba driver update (John Belmonte) 13744 13745Return only 0 or 1 for our interrupt handler status (Andrew 13746Morton) 13747 13748 137493) iASL Compiler: 13750 13751Fixed a reported problem where multiple (nested) ElseIf() 13752statements were not handled correctly by the compiler, resulting 13753in incorrect warnings and incorrect AML code. This was a problem 13754in both the ASL parser and the code generator. 13755 13756 137574) Documentation: 13758 13759Added changes to existing interfaces, new exception codes, and new 13760text concerning reference count object management versus garbage 13761collection. 13762 13763---------------------------------------- 1376409 May 2003. Summary of changes for version 20030509. 13765 13766 137671) ACPI CA Core Subsystem: 13768 13769Changed the subsystem initialization sequence to hold off 13770installation of address space handlers until the hardware has been 13771initialized and the system has entered ACPI mode. This is because 13772the installation of space handlers can cause _REG methods to be 13773run. Previously, the _REG methods could potentially be run before 13774ACPI mode was enabled. 13775 13776Fixed some memory leak issues related to address space handler and 13777notify handler installation. There were some problems with the 13778reference count mechanism caused by the fact that the handler 13779objects are shared across several namespace objects. 13780 13781Fixed a reported problem where reference counts within the 13782namespace were not properly updated when named objects created by 13783method execution were deleted. 13784 13785Fixed a reported problem where multiple SSDTs caused a deletion 13786issue during subsystem termination. Restructured the table data 13787structures to simplify the linked lists and the related code. 13788 13789Fixed a problem where the table ID associated with secondary 13790tables (SSDTs) was not being propagated into the namespace objects 13791created by those tables. This would only present a problem for 13792tables that are unloaded at run-time, however. 13793 13794Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE 13795type as the length parameter (instead of UINT32). 13796 13797Solved a long-standing problem where an ALREADY_EXISTS error 13798appears on various systems. This problem could happen when there 13799are multiple PCI_Config operation regions under a single PCI root 13800bus. This doesn't happen very frequently, but there are some 13801systems that do this in the ASL. 13802 13803Fixed a reported problem where the internal DeleteNode function 13804was incorrectly handling the case where a namespace node was the 13805first in the parent's child list, and had additional peers (not 13806the only child, but first in the list of children.) 13807 13808Code and Data Size: Current core subsystem library sizes are shown 13809below. These are the code and data sizes for the acpica.lib 13810produced by the Microsoft Visual C++ 6.0 compiler, and these 13811values do not include any ACPI driver or OSPM code. The debug 13812version of the code includes the debug output trace mechanism and 13813has a much larger code and data size. Note that these values will 13814vary depending on the efficiency of the compiler and the compiler 13815options 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 138252) Linux: 13826 13827Allow ":" in OS override string (Ducrot Bruno) 13828 13829Kobject fix (Greg KH) 13830 13831 138323 iASL Compiler/Disassembler: 13833 13834Fixed a problem in the generation of the C source code files (AML 13835is emitted in C source statements for BIOS inclusion) where the 13836Ascii dump that appears within a C comment at the end of each line 13837could cause a compile time error if the AML sequence happens to 13838have an open comment or close comment sequence embedded. 13839 13840 13841---------------------------------------- 1384224 April 2003. Summary of changes for version 20030424. 13843 13844 138451) ACPI CA Core Subsystem: 13846 13847Support for big-endian systems has been implemented. Most of the 13848support has been invisibly added behind big-endian versions of the 13849ACPI_MOVE_* macros. 13850 13851Fixed a problem in AcpiHwDisableGpeBlock() and 13852AcpiHwClearGpeBlock() where an incorrect offset was passed to the 13853low level hardware write routine. The offset parameter was 13854actually eliminated from the low level read/write routines because 13855they had become obsolete. 13856 13857Fixed a problem where a handler object was deleted twice during 13858the removal of a fixed event handler. 13859 13860 138612) Linux: 13862 13863A fix for SMP systems with link devices was contributed by 13864 13865Compaq'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 13869return value from the ACPI CA core back to the OS.) 13870 13871 13872 138733) Documentation: 13874 13875The ACPI CA Programmer Reference has been updated to reflect new 13876interfaces and changes to existing interfaces. 13877 13878---------------------------------------- 1387928 March 2003. Summary of changes for version 20030328. 13880 138811) ACPI CA Core Subsystem: 13882 13883The GPE Block Device support has been completed. New interfaces 13884are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event 13885interfaces (enable, disable, clear, getstatus) have been split 13886into separate interfaces for Fixed Events and General Purpose 13887Events (GPEs) in order to support GPE Block Devices properly. 13888 13889Fixed a problem where the error message "Failed to acquire 13890semaphore" would appear during operations on the embedded 13891controller (EC). 13892 13893Code and Data Size: Current core subsystem library sizes are shown 13894below. These are the code and data sizes for the acpica.lib 13895produced by the Microsoft Visual C++ 6.0 compiler, and these 13896values do not include any ACPI driver or OSPM code. The debug 13897version of the code includes the debug output trace mechanism and 13898has a much larger code and data size. Note that these values will 13899vary depending on the efficiency of the compiler and the compiler 13900options 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---------------------------------------- 1391128 February 2003. Summary of changes for version 20030228. 13912 13913 139141) ACPI CA Core Subsystem: 13915 13916The GPE handling and dispatch code has been completely overhauled 13917in preparation for support of GPE Block Devices (ID ACPI0006). 13918This affects internal data structures and code only; there should 13919be no differences visible externally. One new file has been 13920added, evgpeblk.c 13921 13922The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only 13923fields that are used to determine the GPE block lengths. The 13924REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address 13925structures are ignored. This is per the ACPI specification but it 13926isn'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 13929In the SCI interrupt handler, removed the read of the PM1_CONTROL 13930register to look at the SCI_EN bit. On some machines, this read 13931causes an SMI event and greatly slows down SCI events. (This may 13932in fact be the cause of slow battery status response on some 13933systems.) 13934 13935Fixed a problem where a store of a NULL string to a package object 13936could cause the premature deletion of the object. This was seen 13937during execution of the battery _BIF method on some systems, 13938resulting in no battery data being returned. 13939 13940Added AcpiWalkResources interface to simplify parsing of resource 13941lists. 13942 13943Code and Data Size: Current core subsystem library sizes are shown 13944below. These are the code and data sizes for the acpica.lib 13945produced by the Microsoft Visual C++ 6.0 compiler, and these 13946values do not include any ACPI driver or OSPM code. The debug 13947version of the code includes the debug output trace mechanism and 13948has a much larger code and data size. Note that these values will 13949vary depending on the efficiency of the compiler and the compiler 13950options 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 139602) Linux 13961 13962S3 fixes (Ole Rohne) 13963 13964Update ACPI PHP driver with to use new acpi_walk_resource API 13965(Bjorn Helgaas) 13966 13967Add S4BIOS support (Pavel Machek) 13968 13969Map in entire table before performing checksum (John Stultz) 13970 13971Expand the mem= cmdline to allow the specification of reserved and 13972ACPI DATA blocks (Pavel Machek) 13973 13974Never use ACPI on VISWS 13975 13976Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez) 13977 13978Revert a change that allowed P_BLK lengths to be 4 or 5. This is 13979causing us to think that some systems support C2 when they really 13980don't. 13981 13982Do not count processor objects for non-present CPUs (Thanks to 13983Dominik Brodowski) 13984 13985 139863) iASL Compiler: 13987 13988Fixed a problem where ASL include files could not be found and 13989opened. 13990 13991Added support for the _PDC reserved name. 13992 13993 13994---------------------------------------- 1399522 January 2003. Summary of changes for version 20030122. 13996 13997 139981) ACPI CA Core Subsystem: 13999 14000Added a check for constructs of the form: Store (Local0, Local0) 14001where Local0 is not initialized. Apparently, some BIOS 14002programmers believe that this is a NOOP. Since this store doesn't 14003do anything anyway, the new prototype behavior will ignore this 14004error. This is a case where we can relax the strict checking in 14005the interpreter in the name of compatibility. 14006 14007 140082) Linux 14009 14010The AcpiSrc Source Conversion Utility has been released with the 14011Linux package for the first time. This is the utility that is 14012used 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 14017header. 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 14026the 14027former now also includes the latter, acpiphp.h only needs the one, 14028now. 14029 14030(2.5) Make it possible to select method of bios restoring after S3 14031resume. [=> 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 14043Visinoni) 14044 14045 140463) iASL Compiler: 14047 14048Added support to disassemble SSDT and PSDTs. 14049 14050Implemented support to obtain SSDTs from the Windows registry if 14051available. 14052 14053 14054---------------------------------------- 1405509 January 2003. Summary of changes for version 20030109. 14056 140571) ACPI CA Core Subsystem: 14058 14059Changed the behavior of the internal Buffer-to-String conversion 14060function. The current ACPI specification states that the contents 14061of the buffer are "converted to a string of two-character 14062hexadecimal numbers, each separated by a space". Unfortunately, 14063this definition is not backwards compatible with existing ACPI 1.0 14064implementations (although the behavior was not defined in the ACPI 140651.0 specification). The new behavior simply copies data from the 14066buffer to the string until a null character is found or the end of 14067the buffer is reached. The new String object is always null 14068terminated. This problem was seen during the generation of _BIF 14069battery data where incorrect strings were returned for battery 14070type, etc. This will also require an errata to the ACPI 14071specification. 14072 14073Renamed all instances of NATIVE_UINT and NATIVE_INT to 14074ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively. 14075 14076Copyright in all module headers (both Linux and non-Linux) has be 14077updated to 2003. 14078 14079Code and Data Size: Current core subsystem library sizes are shown 14080below. These are the code and data sizes for the acpica.lib 14081produced by the Microsoft Visual C++ 6.0 compiler, and these 14082values do not include any ACPI driver or OSPM code. The debug 14083version of the code includes the debug output trace mechanism and 14084has a much larger code and data size. Note that these values will 14085vary depending on the efficiency of the compiler and the compiler 14086options 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 140962) Linux 14097 14098Fixed 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 14107of 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 14115Several changes have been made to the source code translation 14116utility that generates the Linux Code in order to make the code 14117more "Linux-like": 14118 14119All typedefs on structs and unions have been removed in keeping 14120with the Linux coding style. 14121 14122Removed the non-Linux SourceSafe module revision number from each 14123module header. 14124 14125Completed major overhaul of symbols to be lowercased for linux. 14126Doubled the number of symbols that are lowercased. 14127 14128Fixed a problem where identifiers within procedure headers and 14129within quotes were not fully lower cased (they were left with a 14130starting capital.) 14131 14132Some C macros whose only purpose is to allow the generation of 16- 14133bit code are now completely removed in the Linux code, increasing 14134readability and maintainability. 14135 14136---------------------------------------- 14137 1413812 December 2002. Summary of changes for version 20021212. 14139 14140 141411) ACPI CA Core Subsystem: 14142 14143Fixed a problem where the creation of a zero-length AML Buffer 14144would cause a fault. 14145 14146Fixed a problem where a Buffer object that pointed to a static AML 14147buffer (in an ACPI table) could inadvertently be deleted, causing 14148memory corruption. 14149 14150Fixed a problem where a user buffer (passed in to the external 14151ACPI CA interfaces) could be overwritten if the buffer was too 14152small to complete the operation, causing memory corruption. 14153 14154Fixed a problem in the Buffer-to-String conversion code where a 14155string of length one was always returned, regardless of the size 14156of the input Buffer object. 14157 14158Removed the NATIVE_CHAR data type across the entire source due to 14159lack of need and lack of consistent use. 14160 14161Code and Data Size: Current core subsystem library sizes are shown 14162below. These are the code and data sizes for the acpica.lib 14163produced by the Microsoft Visual C++ 6.0 compiler, and these 14164values do not include any ACPI driver or OSPM code. The debug 14165version of the code includes the debug output trace mechanism and 14166has a much larger code and data size. Note that these values will 14167vary depending on the efficiency of the compiler and the compiler 14168options 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---------------------------------------- 1417905 December 2002. Summary of changes for version 20021205. 14180 141811) ACPI CA Core Subsystem: 14182 14183Fixed a problem where a store to a String or Buffer object could 14184cause corruption of the DSDT if the object type being stored was 14185the same as the target object type and the length of the object 14186being stored was equal to or smaller than the original (existing) 14187target object. This was seen to cause corruption of battery _BIF 14188buffers if the _BIF method modified the buffer on the fly. 14189 14190Fixed a problem where an internal error was generated if a control 14191method invocation was used in an OperationRegion, Buffer, or 14192Package declaration. This was caused by the deferred parsing of 14193the control method and thus the deferred creation of the internal 14194method object. The solution to this problem was to create the 14195internal method object at the moment the method is encountered in 14196the first pass - so that subsequent references to the method will 14197able to obtain the required parameter count and thus properly 14198parse the method invocation. This problem presented itself as an 14199AE_AML_INTERNAL during the pass 1 parse phase during table load. 14200 14201Fixed a problem where the internal String object copy routine did 14202not always allocate sufficient memory for the target String object 14203and caused memory corruption. This problem was seen to cause 14204"Allocation already present in list!" errors as memory allocation 14205became corrupted. 14206 14207Implemented a new function for the evaluation of namespace objects 14208that allows the specification of the allowable return object 14209types. This simplifies a lot of code that checks for a return 14210object of one or more specific objects returned from the 14211evaluation (such as _STA, etc.) This may become and external 14212function if it would be useful to ACPI-related drivers. 14213 14214Completed another round of prefixing #defines with "ACPI_" for 14215clarity. 14216 14217Completed additional code restructuring to allow more modular 14218linking for iASL compiler and AcpiExec. Several files were split 14219creating new files. New files: nsparse.c dsinit.c evgpe.c 14220 14221Implemented an abort mechanism to terminate an executing control 14222method via the AML debugger. This feature is useful for debugging 14223control methods that depend (wait) for specific hardware 14224responses. 14225 14226Code and Data Size: Current core subsystem library sizes are shown 14227below. These are the code and data sizes for the acpica.lib 14228produced by the Microsoft Visual C++ 6.0 compiler, and these 14229values do not include any ACPI driver or OSPM code. The debug 14230version of the code includes the debug output trace mechanism and 14231has a much larger code and data size. Note that these values will 14232vary depending on the efficiency of the compiler and the compiler 14233options 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 142432) iASL Compiler/Disassembler 14244 14245Fixed a compiler code generation problem for "Interrupt" Resource 14246Descriptors. If specified in the ASL, the optional "Resource 14247Source Index" and "Resource Source" fields were not inserted into 14248the correct location within the AML resource descriptor, creating 14249an invalid descriptor. 14250 14251Fixed a disassembler problem for "Interrupt" resource descriptors. 14252The optional "Resource Source Index" and "Resource Source" fields 14253were ignored. 14254 14255 14256---------------------------------------- 1425722 November 2002. Summary of changes for version 20021122. 14258 14259 142601) ACPI CA Core Subsystem: 14261 14262Fixed a reported problem where an object stored to a Method Local 14263or Arg was not copied to a new object during the store - the 14264object pointer was simply copied to the Local/Arg. This caused 14265all subsequent operations on the Local/Arg to also affect the 14266original source of the store operation. 14267 14268Fixed a problem where a store operation to a Method Local or Arg 14269was not completed properly if the Local/Arg contained a reference 14270(from RefOf) to a named field. The general-purpose store-to- 14271namespace-node code is now used so that this case is handled 14272automatically. 14273 14274Fixed a problem where the internal object copy routine would cause 14275a protection fault if the object being copied was a Package and 14276contained either 1) a NULL package element or 2) a nested sub- 14277package. 14278 14279Fixed a problem with the GPE initialization that resulted from an 14280ambiguity in the ACPI specification. One section of the 14281specification states that both the address and length of the GPE 14282block must be zero if the block is not supported. Another section 14283implies that only the address need be zero if the block is not 14284supported. The code has been changed so that both the address and 14285the length must be non-zero to indicate a valid GPE block (i.e., 14286if either the address or the length is zero, the GPE block is 14287invalid.) 14288 14289Code and Data Size: Current core subsystem library sizes are shown 14290below. These are the code and data sizes for the acpica.lib 14291produced by the Microsoft Visual C++ 6.0 compiler, and these 14292values do not include any ACPI driver or OSPM code. The debug 14293version of the code includes the debug output trace mechanism and 14294has a much larger code and data size. Note that these values will 14295vary depending on the efficiency of the compiler and the compiler 14296options 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 143062) Linux 14307 14308Cleaned up EC driver. Exported an external EC read/write 14309interface. By going through this, other drivers (most notably 14310sonypi) will be able to serialize access to the EC. 14311 14312 143133) iASL Compiler/Disassembler 14314 14315Implemented support to optionally generate include files for both 14316ASM and C (the -i switch). This simplifies BIOS development by 14317automatically creating include files that contain external 14318declarations for the symbols that are created within the 14319 14320(optionally generated) ASM and C AML source files. 14321 14322 14323---------------------------------------- 1432415 November 2002. Summary of changes for version 20021115. 14325 143261) ACPI CA Core Subsystem: 14327 14328Fixed a memory leak problem where an error during resolution of 14329 14330method arguments during a method invocation from another method 14331failed to cleanup properly by deleting all successfully resolved 14332argument objects. 14333 14334Fixed a problem where the target of the Index() operator was not 14335correctly constructed if the source object was a package. This 14336problem has not been detected because the use of a target operand 14337with Index() is very rare. 14338 14339Fixed a problem with the Index() operator where an attempt was 14340made to delete the operand objects twice. 14341 14342Fixed a problem where an attempt was made to delete an operand 14343twice during execution of the CondRefOf() operator if the target 14344did not exist. 14345 14346Implemented the first of perhaps several internal create object 14347functions that create and initialize a specific object type. This 14348consolidates duplicated code wherever the object is created, thus 14349shrinking the size of the subsystem. 14350 14351Implemented improved debug/error messages for errors that occur 14352during nested method invocations. All executing method pathnames 14353are displayed (with the error) as the call stack is unwound - thus 14354simplifying debug. 14355 14356Fixed a problem introduced in the 10/02 release that caused 14357premature deletion of a buffer object if a buffer was used as an 14358ASL operand where an integer operand is required (Thus causing an 14359implicit object conversion from Buffer to Integer.) The change in 14360the 10/02 release was attempting to fix a memory leak (albeit 14361incorrectly.) 14362 14363Code and Data Size: Current core subsystem library sizes are shown 14364below. These are the code and data sizes for the acpica.lib 14365produced by the Microsoft Visual C++ 6.0 compiler, and these 14366values do not include any ACPI driver or OSPM code. The debug 14367version of the code includes the debug output trace mechanism and 14368has a much larger code and data size. Note that these values will 14369vary depending on the efficiency of the compiler and the compiler 14370options 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 143802) Linux 14381 14382Changed the implementation of the ACPI semaphores to use down() 14383instead of down_interruptable(). It is important that the 14384execution of ACPI control methods not be interrupted by signals. 14385Methods must run to completion, or the system may be left in an 14386unknown/unstable state. 14387 14388Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set. 14389(Shawn Starr) 14390 14391 143923) iASL Compiler/Disassembler 14393 14394 14395Changed the default location of output files. All output files 14396are now placed in the current directory by default instead of in 14397the directory of the source file. This change may affect some 14398existing makefiles, but it brings the behavior of the compiler in 14399line with other similar tools. The location of the output files 14400can be overridden with the -p command line switch. 14401 14402 14403---------------------------------------- 1440411 November 2002. Summary of changes for version 20021111. 14405 14406 144070) ACPI Specification 2.0B is released and is now available at: 14408http://www.acpi.info/index.html 14409 14410 144111) ACPI CA Core Subsystem: 14412 14413Implemented support for the ACPI 2.0 SMBus Operation Regions. 14414This includes the early detection and handoff of the request to 14415the SMBus region handler (avoiding all of the complex field 14416support code), and support for the bidirectional return packet 14417from an SMBus write operation. This paves the way for the 14418development of SMBus drivers in each host operating system. 14419 14420Fixed a problem where the semaphore WAIT_FOREVER constant was 14421defined as 32 bits, but must be 16 bits according to the ACPI 14422specification. This had the side effect of causing ASL 14423Mutex/Event timeouts even though the ASL code requested a wait 14424forever. Changed all internal references to the ACPI timeout 14425parameter to 16 bits to prevent future problems. Changed the name 14426of WAIT_FOREVER to ACPI_WAIT_FOREVER. 14427 14428Code and Data Size: Current core subsystem library sizes are shown 14429below. These are the code and data sizes for the acpica.lib 14430produced by the Microsoft Visual C++ 6.0 compiler, and these 14431values do not include any ACPI driver or OSPM code. The debug 14432version of the code includes the debug output trace mechanism and 14433has a much larger code and data size. Note that these values will 14434vary depending on the efficiency of the compiler and the compiler 14435options 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 144452) Linux 14446 14447Module loading/unloading fixes (John Cagle) 14448 14449 144503) iASL Compiler/Disassembler 14451 14452Added support for the SMBBlockProcessCall keyword (ACPI 2.0) 14453 14454Implemented support for the disassembly of all SMBus protocol 14455keywords (SMBQuick, SMBWord, etc.) 14456 14457---------------------------------------- 1445801 November 2002. Summary of changes for version 20021101. 14459 14460 144611) ACPI CA Core Subsystem: 14462 14463Fixed a problem where platforms that have a GPE1 block but no GPE0 14464block were not handled correctly. This resulted in a "GPE 14465overlap" error message. GPE0 is no longer required. 14466 14467Removed code added in the previous release that inserted nodes 14468into the namespace in alphabetical order. This caused some side- 14469effects on various machines. The root cause of the problem is 14470still under investigation since in theory, the internal ordering 14471of the namespace nodes should not matter. 14472 14473 14474Enhanced error reporting for the case where a named object is not 14475found during control method execution. The full ACPI namepath 14476(name reference) of the object that was not found is displayed in 14477this case. 14478 14479Note: as a result of the overhaul of the namespace object types in 14480the previous release, the namespace nodes for the predefined 14481scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE 14482instead of ACPI_TYPE_ANY. This simplifies the namespace 14483management code but may affect code that walks the namespace tree 14484looking for specific object types. 14485 14486Code and Data Size: Current core subsystem library sizes are shown 14487below. These are the code and data sizes for the acpica.lib 14488produced by the Microsoft Visual C++ 6.0 compiler, and these 14489values do not include any ACPI driver or OSPM code. The debug 14490version of the code includes the debug output trace mechanism and 14491has a much larger code and data size. Note that these values will 14492vary depending on the efficiency of the compiler and the compiler 14493options 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 145032) Linux 14504 14505Fixed a problem introduced in the previous release where the 14506Processor and Thermal objects were not recognized and installed in 14507/proc. This was related to the scope type change described above. 14508 14509 145103) iASL Compiler/Disassembler 14511 14512Implemented the -g option to get all of the required ACPI tables 14513from the registry and save them to files (Windows version of the 14514compiler only.) The required tables are the FADT, FACS, and DSDT. 14515 14516Added ACPI table checksum validation during table disassembly in 14517order to catch corrupted tables. 14518 14519 14520---------------------------------------- 1452122 October 2002. Summary of changes for version 20021022. 14522 145231) ACPI CA Core Subsystem: 14524 14525Implemented a restriction on the Scope operator that the target 14526must already exist in the namespace at the time the operator is 14527encountered (during table load or method execution). In other 14528words, forward references are not allowed and Scope() cannot 14529create a new object. This changes the previous behavior where the 14530interpreter would create the name if not found. This new behavior 14531correctly enables the search-to-root algorithm during namespace 14532lookup of the target name. Because of this upsearch, this fixes 14533the known Compaq _SB_.OKEC problem and makes both the AML 14534interpreter and iASL compiler compatible with other ACPI 14535implementations. 14536 14537Completed a major overhaul of the internal ACPI object types for 14538the ACPI Namespace and the associated operand objects. Many of 14539these types had become obsolete with the introduction of the two- 14540pass namespace load. This cleanup simplifies the code and makes 14541the entire namespace load mechanism much clearer and easier to 14542understand. 14543 14544Improved debug output for tracking scope opening/closing to help 14545diagnose scoping issues. The old scope name as well as the new 14546scope name are displayed. Also improved error messages for 14547problems with ASL Mutex objects and error messages for GPE 14548problems. 14549 14550Cleaned up the namespace dump code, removed obsolete code. 14551 14552All string output (for all namespace/object dumps) now uses the 14553common ACPI string output procedure which handles escapes properly 14554and does not emit non-printable characters. 14555 14556Fixed some issues with constants in the 64-bit version of the 14557local C library (utclib.c) 14558 14559 145602) Linux 14561 14562EC Driver: No longer attempts to acquire the Global Lock at 14563interrupt level. 14564 14565 145663) iASL Compiler/Disassembler 14567 14568Implemented ACPI 2.0B grammar change that disallows all Type 1 and 145692 opcodes outside of a control method. This means that the 14570"executable" operators (versus the "namespace" operators) cannot 14571be used at the table level; they can only be used within a control 14572method. 14573 14574Implemented the restriction on the Scope() operator where the 14575target must already exist in the namespace at the time the 14576operator is encountered (during ASL compilation). In other words, 14577forward references are not allowed and Scope() cannot create a new 14578object. This makes the iASL compiler compatible with other ACPI 14579implementations and makes the Scope() implementation adhere to the 14580ACPI specification. 14581 14582Fixed a problem where namepath optimization for the Alias operator 14583was optimizing the wrong path (of the two namepaths.) This caused 14584a "Missing alias link" error message. 14585 14586Fixed a problem where an "unknown reserved name" warning could be 14587incorrectly generated for names like "_SB" when the trailing 14588underscore is not used in the original ASL. 14589 14590Fixed a problem where the reserved name check did not handle 14591NamePaths with multiple NameSegs correctly. The first nameseg of 14592the NamePath was examined instead of the last NameSeg. 14593 14594 14595---------------------------------------- 14596 1459702 October 2002. Summary of changes for this release. 14598 14599 146001) ACPI CA Core Subsystem version 20021002: 14601 14602Fixed a problem where a store/copy of a string to an existing 14603string did not always set the string length properly in the String 14604object. 14605 14606Fixed a reported problem with the ToString operator where the 14607behavior was identical to the ToHexString operator instead of just 14608simply converting a raw buffer to a string data type. 14609 14610Fixed a problem where CopyObject and the other "explicit" 14611conversion operators were not updating the internal namespace node 14612type as part of the store operation. 14613 14614Fixed a memory leak during implicit source operand conversion 14615where the original object was not deleted if it was converted to a 14616new object of a different type. 14617 14618Enhanced error messages for all problems associated with namespace 14619lookups. Common procedure generates and prints the lookup name as 14620well as the formatted status. 14621 14622Completed implementation of a new design for the Alias support 14623within the namespace. The existing design did not handle the case 14624where a new object was assigned to one of the two names due to the 14625use of an explicit conversion operator, resulting in the two names 14626pointing to two different objects. The new design simply points 14627the Alias name to the original name node - not to the object. 14628This results in a level of indirection that must be handled in the 14629name resolution mechanism. 14630 14631Code and Data Size: Current core subsystem library sizes are shown 14632below. These are the code and data sizes for the acpica.lib 14633produced by the Microsoft Visual C++ 6.0 compiler, and these 14634values do not include any ACPI driver or OSPM code. The debug 14635version of the code includes the debug output trace mechanism and 14636has a larger code and data size. Note that these values will vary 14637depending on the efficiency of the compiler and the compiler 14638options 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 146482) Linux 14649 14650Initialize thermal driver's timer before it is used. (Knut 14651Neumann) 14652 14653Allow handling negative celsius values. (Kochi Takayoshi) 14654 14655Fix thermal management and make trip points. R/W (Pavel Machek) 14656 14657Fix /proc/acpi/sleep. (P. Christeas) 14658 14659IA64 fixes. (David Mosberger) 14660 14661Fix reversed logic in blacklist code. (Sergio Monteiro Basto) 14662 14663Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik 14664Brodowski) 14665 14666 146673) iASL Compiler/Disassembler 14668 14669Clarified some warning/error messages. 14670 14671 14672---------------------------------------- 1467318 September 2002. Summary of changes for this release. 14674 14675 146761) ACPI CA Core Subsystem version 20020918: 14677 14678Fixed a reported problem with reference chaining (via the Index() 14679and RefOf() operators) in the ObjectType() and SizeOf() operators. 14680The definition of these operators includes the dereferencing of 14681all chained references to return information on the base object. 14682 14683Fixed a problem with stores to indexed package elements - the 14684existing code would not complete the store if an "implicit 14685conversion" was not performed. In other words, if the existing 14686object (package element) was to be replaced completely, the code 14687didn't handle this case. 14688 14689Relaxed typechecking on the ASL "Scope" operator to allow the 14690target name to refer to an object of type Integer, String, or 14691Buffer, in addition to the scoping object types (Device, 14692predefined Scopes, Processor, PowerResource, and ThermalZone.) 14693This allows existing AML code that has workarounds for a bug in 14694Windows to function properly. A warning is issued, however. This 14695affects both the AML interpreter and the iASL compiler. Below is 14696an example of this type of ASL code: 14697 14698 Name(DEB,0x00) 14699 Scope(DEB) 14700 { 14701 14702Fixed some reported problems with 64-bit integer support in the 14703local implementation of C library functions (clib.c) 14704 14705 147062) Linux 14707 14708Use ACPI fix map region instead of IOAPIC region, since it is 14709undefined in non-SMP. 14710 14711Ensure that the SCI has the proper polarity and trigger, even on 14712systems that do not have an interrupt override entry in the MADT. 14713 147142.5 big driver reorganization (Pat Mochel) 14715 14716Use early table mapping code from acpitable.c (Andi Kleen) 14717 14718New blacklist entries (Andi Kleen) 14719 14720Blacklist improvements. Split blacklist code out into a separate 14721file. Move checking the blacklist to very early. Previously, we 14722would use ACPI tables, and then halfway through init, check the 14723blacklist -- too late. Now, it's early enough to completely fall- 14724back to non-ACPI. 14725 14726 147273) iASL Compiler/Disassembler version 20020918: 14728 14729Fixed a problem where the typechecking code didn't know that an 14730alias could point to a method. In other words, aliases were not 14731being dereferenced during typechecking. 14732 14733 14734---------------------------------------- 1473529 August 2002. Summary of changes for this release. 14736 147371) ACPI CA Core Subsystem Version 20020829: 14738 14739If the target of a Scope() operator already exists, it must be an 14740object type that actually opens a scope -- such as a Device, 14741Method, Scope, etc. This is a fatal runtime error. Similar error 14742check has been added to the iASL compiler also. 14743 14744Tightened up the namespace load to disallow multiple names in the 14745same scope. This previously was allowed if both objects were of 14746the same type. (i.e., a lookup was the same as entering a new 14747name). 14748 14749 147502) Linux 14751 14752Ensure that the ACPI interrupt has the proper trigger and 14753polarity. 14754 14755local_irq_disable is extraneous. (Matthew Wilcox) 14756 14757Make "acpi=off" actually do what it says, and not use the ACPI 14758interpreter *or* the tables. 14759 14760Added arch-neutral support for parsing SLIT and SRAT tables (Kochi 14761Takayoshi) 14762 14763 147643) iASL Compiler/Disassembler Version 20020829: 14765 14766Implemented namepath optimization for name declarations. For 14767example, a declaration like "Method (\_SB_.ABCD)" would get 14768optimized to "Method (ABCD)" if the declaration is within the 14769\_SB_ scope. This optimization is in addition to the named 14770reference path optimization first released in the previous 14771version. This would seem to complete all possible optimizations 14772for namepaths within the ASL/AML. 14773 14774If the target of a Scope() operator already exists, it must be an 14775object type that actually opens a scope -- such as a Device, 14776Method, Scope, etc. 14777 14778Implemented a check and warning for unreachable code in the same 14779block below a Return() statement. 14780 14781Fixed a problem where the listing file was not generated if the 14782compiler aborted if the maximum error count was exceeded (200). 14783 14784Fixed a problem where the typechecking of method return values was 14785broken. This includes the check for a return value when the 14786method is invoked as a TermArg (a return value is expected.) 14787 14788Fixed a reported problem where EOF conditions during a quoted 14789string or comment caused a fault. 14790 14791 14792---------------------------------------- 1479315 August 2002. Summary of changes for this release. 14794 147951) ACPI CA Core Subsystem Version 20020815: 14796 14797Fixed a reported problem where a Store to a method argument that 14798contains a reference did not perform the indirect store correctly. 14799This problem was created during the conversion to the new 14800reference object model - the indirect store to a method argument 14801code was not updated to reflect the new model. 14802 14803Reworked the ACPI mode change code to better conform to ACPI 2.0, 14804handle corner cases, and improve code legibility (Kochi Takayoshi) 14805 14806Fixed a problem with the pathname parsing for the carat (^) 14807prefix. The heavy use of the carat operator by the new namepath 14808optimization in the iASL compiler uncovered a problem with the AML 14809interpreter handling of this prefix. In the case where one or 14810more carats precede a single nameseg, the nameseg was treated as 14811standalone and the search rule (to root) was inadvertently 14812applied. This could cause both the iASL compiler and the 14813interpreter to find the wrong object or to miss the error that 14814should occur if the object does not exist at that exact pathname. 14815 14816Found and fixed the problem where the HP Pavilion DSDT would not 14817load. This was a relatively minor tweak to the table loading code 14818(a problem caused by the unexpected encounter with a method 14819invocation not within a control method), but it does not solve the 14820overall issue of the execution of AML code at the table level. 14821This investigation is still ongoing. 14822 14823Code and Data Size: Current core subsystem library sizes are shown 14824below. These are the code and data sizes for the acpica.lib 14825produced by the Microsoft Visual C++ 6.0 compiler, and these 14826values do not include any ACPI driver or OSPM code. The debug 14827version of the code includes the debug output trace mechanism and 14828has a larger code and data size. Note that these values will vary 14829depending on the efficiency of the compiler and the compiler 14830options 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 148402) Linux 14841 14842Remove redundant slab.h include (Brad Hards) 14843 14844Fix several bugs in thermal.c (Herbert Nachtnebel) 14845 14846Make CONFIG_ACPI_BOOT work properly (Pavel Machek) 14847 14848Change acpi_system_suspend to use updated irq functions (Pavel 14849Machek) 14850 14851Export acpi_get_firmware_table (Matthew Wilcox) 14852 14853Use proper root proc entry for ACPI (Kochi Takayoshi) 14854 14855Fix early-boot table parsing (Bjorn Helgaas) 14856 14857 148583) iASL Compiler/Disassembler 14859 14860Reworked the compiler options to make them more consistent and to 14861use two-letter options where appropriate. We were running out of 14862sensible letters. This may break some makefiles, so check the 14863current options list by invoking the compiler with no parameters. 14864 14865Completed the design and implementation of the ASL namepath 14866optimization option for the compiler. This option optimizes all 14867references to named objects to the shortest possible path. The 14868first attempt tries to utilize a single nameseg (4 characters) and 14869the "search-to-root" algorithm used by the interpreter. If that 14870cannot be used (because either the name is not in the search path 14871or there is a conflict with another object with the same name), 14872the pathname is optimized using the carat prefix (usually a 14873shorter string than specifying the entire path from the root.) 14874 14875Implemented support to obtain the DSDT from the Windows registry 14876(when the disassembly option is specified with no input file). 14877Added this code as the implementation for AcpiOsTableOverride in 14878the Windows OSL. Migrated the 16-bit code (used in the AcpiDump 14879utility) to scan memory for the DSDT to the AcpiOsTableOverride 14880function in the DOS OSL to make the disassembler truly OS 14881independent. 14882 14883Implemented a new option to disassemble and compile in one step. 14884When used without an input filename, this option will grab the 14885DSDT from the local machine, disassemble it, and compile it in one 14886step. 14887 14888Added a warning message for invalid escapes (a backslash followed 14889by any character other than the allowable escapes). This catches 14890the quoted string error "\_SB_" (which should be "\\_SB_" ). 14891 14892Also, there are numerous instances in the ACPI specification where 14893this error occurs. 14894 14895Added a compiler option to disable all optimizations. This is 14896basically the "compatibility mode" because by using this option, 14897the AML code will come out exactly the same as other ASL 14898compilers. 14899 14900Added error messages for incorrectly ordered dependent resource 14901functions. This includes: missing EndDependentFn macro at end of 14902dependent resource list, nested dependent function macros (both 14903start and end), and missing StartDependentFn macro. These are 14904common errors that should be caught at compile time. 14905 14906Implemented _OSI support for the disassembler and compiler. _OSI 14907must be included in the namespace for proper disassembly (because 14908the disassembler must know the number of arguments.) 14909 14910Added an "optimization" message type that is optional (off by 14911default). This message is used for all optimizations - including 14912constant folding, integer optimization, and namepath optimization. 14913 14914---------------------------------------- 1491525 July 2002. Summary of changes for this release. 14916 14917 149181) ACPI CA Core Subsystem Version 20020725: 14919 14920The AML Disassembler has been enhanced to produce compilable ASL 14921code and has been integrated into the iASL compiler (see below) as 14922well as the single-step disassembly for the AML debugger and the 14923disassembler for the AcpiDump utility. All ACPI 2.0A opcodes, 14924resource templates and macros are fully supported. The 14925disassembler has been tested on over 30 different AML files, 14926producing identical AML when the resulting disassembled ASL file 14927is recompiled with the same ASL compiler. 14928 14929Modified the Resource Manager to allow zero interrupts and zero 14930dma channels during the GetCurrentResources call. This was 14931causing problems on some platforms. 14932 14933Added the AcpiOsRedirectOutput interface to the OSL to simplify 14934output redirection for the AcpiOsPrintf and AcpiOsVprintf 14935interfaces. 14936 14937Code and Data Size: Current core subsystem library sizes are shown 14938below. These are the code and data sizes for the acpica.lib 14939produced by the Microsoft Visual C++ 6.0 compiler, and these 14940values do not include any ACPI driver or OSPM code. The debug 14941version of the code includes the debug output trace mechanism and 14942has a larger code and data size. Note that these values will vary 14943depending on the efficiency of the compiler and the compiler 14944options 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 149542) Linux 14955 14956Fixed a panic in the EC driver (Dominik Brodowski) 14957 14958Implemented checksum of the R/XSDT itself during Linux table scan 14959(Richard Schaal) 14960 14961 149623) iASL compiler 14963 14964The AML disassembler is integrated into the compiler. The "-d" 14965option invokes the disassembler to completely disassemble an 14966input AML file, producing as output a text ASL file with the 14967extension ".dsl" (to avoid name collisions with existing .asl 14968source files.) A future enhancement will allow the disassembler 14969to obtain the BIOS DSDT from the registry under Windows. 14970 14971Fixed a problem with the VendorShort and VendorLong resource 14972descriptors where an invalid AML sequence was created. 14973 14974Implemented a fix for BufferData term in the ASL parser. It was 14975inadvertently defined twice, allowing invalid syntax to pass and 14976causing reduction conflicts. 14977 14978Fixed a problem where the Ones opcode could get converted to a 14979value of zero if "Ones" was used where a byte, word or dword value 14980was expected. The 64-bit value is now truncated to the correct 14981size with the correct value. 14982 14983 14984 14985---------------------------------------- 1498602 July 2002. Summary of changes for this release. 14987 14988 149891) ACPI CA Core Subsystem Version 20020702: 14990 14991The Table Manager code has been restructured to add several new 14992features. Tables that are not required by the core subsystem 14993(other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer 14994validated in any way and are returned from AcpiGetFirmwareTable if 14995requested. The AcpiOsTableOverride interface is now called for 14996each table that is loaded by the subsystem in order to allow the 14997host to override any table it chooses. Previously, only the DSDT 14998could be overridden. Added one new files, tbrsdt.c and 14999tbgetall.c. 15000 15001Fixed a problem with the conversion of internal package objects to 15002external objects (when a package is returned from a control 15003method.) The return buffer length was set to zero instead of the 15004proper length of the package object. 15005 15006Fixed a reported problem with the use of the RefOf and DeRefOf 15007operators when passing reference arguments to control methods. A 15008new type of Reference object is used internally for references 15009produced by the RefOf operator. 15010 15011Added additional error messages in the Resource Manager to explain 15012AE_BAD_DATA errors when they occur during resource parsing. 15013 15014Split the AcpiEnableSubsystem into two primitives to enable a 15015finer granularity initialization sequence. These two calls should 15016be called in this order: AcpiEnableSubsystem (flags), 15017AcpiInitializeObjects (flags). The flags parameter remains the 15018same. 15019 15020 150212) Linux 15022 15023Updated the ACPI utilities module to understand the new style of 15024fully resolved package objects that are now returned from the core 15025subsystem. 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 15031The method evaluation utility uses the new buffer allocation 15032scheme instead of calling AcpiEvaluate Object twice. 15033 15034Added support for ECDT. This allows the use of the Embedded 15035 15036Controller before the namespace has been fully initialized, which 15037is necessary for ACPI 2.0 support, and for some laptops to 15038initialize properly. (Laptops using ECDT are still rare, so only 15039limited testing was performed of the added functionality.) 15040 15041Fixed memory leaks in the EC driver. 15042 15043Eliminated a brittle code structure in acpi_bus_init(). 15044 15045Eliminated the acpi_evaluate() helper function in utils.c. It is 15046no longer needed since acpi_evaluate_object can optionally 15047allocate memory for the return object. 15048 15049Implemented fix for keyboard hang when getting battery readings on 15050some systems (Stephen White) 15051 15052PCI IRQ routing update (Dominik Brodowski) 15053 15054Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC 15055support 15056 15057---------------------------------------- 1505811 June 2002. Summary of changes for this release. 15059 15060 150611) ACPI CA Core Subsystem Version 20020611: 15062 15063Fixed a reported problem where constants such as Zero and One 15064appearing within _PRT packages were not handled correctly within 15065the resource manager code. Originally reported against the ASL 15066compiler because the code generator now optimizes integers to 15067their minimal AML representation (i.e. AML constants if possible.) 15068The _PRT code now handles all AML constant opcodes correctly 15069(Zero, One, Ones, Revision). 15070 15071Fixed a problem with the Concatenate operator in the AML 15072interpreter where a buffer result object was incorrectly marked as 15073not fully evaluated, causing a run-time error of AE_AML_INTERNAL. 15074 15075All package sub-objects are now fully resolved before they are 15076returned from the external ACPI interfaces. This means that name 15077strings are resolved to object handles, and constant operators 15078(Zero, One, Ones, Revision) are resolved to Integers. 15079 15080Implemented immediate resolution of the AML Constant opcodes 15081(Zero, One, Ones, Revision) to Integer objects upon detection 15082within the AML stream. This has simplified and reduced the 15083generated code size of the subsystem by eliminating about 10 15084switch statements for these constants (which previously were 15085contained in Reference objects.) The complicating issues are that 15086the Zero opcode is used as a "placeholder" for unspecified 15087optional target operands and stores to constants are defined to be 15088no-ops. 15089 15090Code and Data Size: Current core subsystem library sizes are shown 15091below. These are the code and data sizes for the acpica.lib 15092produced by the Microsoft Visual C++ 6.0 compiler, and these 15093values do not include any ACPI driver or OSPM code. The debug 15094version of the code includes the debug output trace mechanism and 15095has a larger code and data size. Note that these values will vary 15096depending on the efficiency of the compiler and the compiler 15097options 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 151072) Linux 15108 15109 15110Added preliminary support for obtaining _TRA data for PCI root 15111bridges (Bjorn Helgaas). 15112 15113 151143) iASL Compiler Version X2046: 15115 15116Fixed a problem where the "_DDN" reserved name was defined to be a 15117control method with one argument. There are no arguments, and 15118_DDN does not have to be a control method. 15119 15120Fixed a problem with the Linux version of the compiler where the 15121source lines printed with error messages were the wrong lines. 15122This turned out to be the "LF versus CR/LF" difference between 15123Windows and Unix. This appears to be the longstanding issue 15124concerning listing output and error messages. 15125 15126Fixed a problem with the Linux version of compiler where opcode 15127names within error messages were wrong. This was caused by a 15128slight difference in the output of the Flex tool on Linux versus 15129Windows. 15130 15131Fixed a problem with the Linux compiler where the hex output files 15132contained some garbage data caused by an internal buffer overrun. 15133 15134 15135---------------------------------------- 1513617 May 2002. Summary of changes for this release. 15137 15138 151391) ACPI CA Core Subsystem Version 20020517: 15140 15141Implemented a workaround to an BIOS bug discovered on the HP 15142OmniBook where the FADT revision number and the table size are 15143inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new 15144behavior is to fallback to using only the ACPI 1.0 fields of the 15145FADT if the table is too small to be a ACPI 2.0 table as claimed 15146by the revision number. Although this is a BIOS bug, this is a 15147case where the workaround is simple enough and with no side 15148effects, so it seemed prudent to add it. A warning message is 15149issued, however. 15150 15151Implemented minimum size checks for the fixed-length ACPI tables - 15152- the FADT and FACS, as well as consistency checks between the 15153revision number and the table size. 15154 15155Fixed a reported problem in the table override support where the 15156new table pointer was incorrectly treated as a physical address 15157instead of a logical address. 15158 15159Eliminated the use of the AE_AML_ERROR exception and replaced it 15160with more descriptive codes. 15161 15162Fixed a problem where an exception would occur if an ASL Field was 15163defined with no named Field Units underneath it (used by some 15164index fields). 15165 15166Code and Data Size: Current core subsystem library sizes are shown 15167below. These are the code and data sizes for the acpica.lib 15168produced by the Microsoft Visual C++ 6.0 compiler, and these 15169values do not include any ACPI driver or OSPM code. The debug 15170version of the code includes the debug output trace mechanism and 15171has a larger code and data size. Note that these values will vary 15172depending on the efficiency of the compiler and the compiler 15173options 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 151842) Linux 15185 15186Much work done on ACPI init (MADT and PCI IRQ routing support). 15187(Paul D. and Dominik Brodowski) 15188 15189Fix PCI IRQ-related panic on boot (Sam Revitch) 15190 15191Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno) 15192 15193Fix "MHz" typo (Dominik Brodowski) 15194 15195Fix RTC year 2000 issue (Dominik Brodowski) 15196 15197Preclude multiple button proc entries (Eric Brunet) 15198 15199Moved arch-specific code out of include/platform/aclinux.h 15200 152013) iASL Compiler Version X2044: 15202 15203Implemented error checking for the string used in the EISAID macro 15204(Usually used in the definition of the _HID object.) The code now 15205strictly enforces the PnP format - exactly 7 characters, 3 15206uppercase letters and 4 hex digits. 15207 15208If a raw string is used in the definition of the _HID object 15209(instead of the EISAID macro), the string must contain all 15210alphanumeric characters (e.g., "*PNP0011" is not allowed because 15211of the asterisk.) 15212 15213Implemented checking for invalid use of ACPI reserved names for 15214most of the name creation operators (Name, Device, Event, Mutex, 15215OperationRegion, PowerResource, Processor, and ThermalZone.) 15216Previously, this check was only performed for control methods. 15217 15218Implemented an additional check on the Name operator to emit an 15219error if a reserved name that must be implemented in ASL as a 15220control method is used. We know that a reserved name must be a 15221method if it is defined with input arguments. 15222 15223The warning emitted when a namespace object reference is not found 15224during the cross reference phase has been changed into an error. 15225The "External" directive should be used for names defined in other 15226modules. 15227 15228 152294) Tools and Utilities 15230 15231The 16-bit tools (adump16 and aexec16) have been regenerated and 15232tested. 15233 15234Fixed a problem with the output of both acpidump and adump16 where 15235the indentation of closing parentheses and brackets was not 15236 15237aligned properly with the parent block. 15238 15239 15240---------------------------------------- 1524103 May 2002. Summary of changes for this release. 15242 15243 152441) ACPI CA Core Subsystem Version 20020503: 15245 15246Added support a new OSL interface that allows the host operating 15247 15248system software to override the DSDT found in the firmware - 15249AcpiOsTableOverride. With this interface, the OSL can examine the 15250version of the firmware DSDT and replace it with a different one 15251if desired. 15252 15253Added new external interfaces for accessing ACPI registers from 15254device drivers and other system software - AcpiGetRegister and 15255AcpiSetRegister. This was simply an externalization of the 15256existing AcpiHwBitRegister interfaces. 15257 15258Fixed a regression introduced in the previous build where the 15259ASL/AML CreateField operator always returned an error, 15260"destination must be a NS Node". 15261 15262Extended the maximum time (before failure) to successfully enable 15263ACPI mode to 3 seconds. 15264 15265Code and Data Size: Current core subsystem library sizes are shown 15266below. These are the code and data sizes for the acpica.lib 15267produced by the Microsoft Visual C++ 6.0 compiler, and these 15268values do not include any ACPI driver or OSPM code. The debug 15269version of the code includes the debug output trace mechanism and 15270has a larger code and data size. Note that these values will vary 15271depending on the efficiency of the compiler and the compiler 15272options 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 152822) Linux 15283 15284Enhanced ACPI init code for SMP. We are now fully MPS and $PIR- 15285free. While 3 out of 4 of our in-house systems work fine, the last 15286one still hangs when testing the LAPIC timer. 15287 15288Renamed many files in 2.5 kernel release to omit "acpi_" from the 15289name. 15290 15291Added warning on boot for Presario 711FR. 15292 15293Sleep improvements (Pavel Machek) 15294 15295ACPI can now be built without CONFIG_PCI enabled. 15296 15297IA64: Fixed memory map functions (JI Lee) 15298 15299 153003) iASL Compiler Version X2043: 15301 15302Added support to allow the compiler to be integrated into the MS 15303VC++ development environment for one-button compilation of single 15304files or entire projects -- with error-to-source-line mapping. 15305 15306Implemented support for compile-time constant folding for the 15307Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0 15308specification. This allows the ASL writer to use expressions 15309instead of Integer/Buffer/String constants in terms that must 15310evaluate to constants at compile time and will also simplify the 15311emitted AML in any such sub-expressions that can be folded 15312(evaluated at compile-time.) This increases the size of the 15313compiler significantly because a portion of the ACPI CA AML 15314interpreter is included within the compiler in order to pre- 15315evaluate constant expressions. 15316 15317 15318Fixed a problem with the "Unicode" ASL macro that caused the 15319compiler to fault. (This macro is used in conjunction with the 15320_STR reserved name.) 15321 15322Implemented an AML opcode optimization to use the Zero, One, and 15323Ones opcodes where possible to further reduce the size of integer 15324constants and thus reduce the overall size of the generated AML 15325code. 15326 15327Implemented error checking for new reserved terms for ACPI version 153282.0A. 15329 15330Implemented the -qr option to display the current list of ACPI 15331reserved names known to the compiler. 15332 15333Implemented the -qc option to display the current list of ASL 15334operators that are allowed within constant expressions and can 15335therefore be folded at compile time if the operands are constants. 15336 15337 153384) Documentation 15339 15340Updated the Programmer's Reference for new interfaces, data types, 15341and memory allocation model options. 15342 15343Updated the iASL Compiler User Reference to apply new format and 15344add information about new features and options. 15345 15346---------------------------------------- 1534719 April 2002. Summary of changes for this release. 15348 153491) ACPI CA Core Subsystem Version 20020419: 15350 15351The source code base for the Core Subsystem has been completely 15352cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit 15353versions. The Lint option files used are included in the 15354/acpi/generate/lint directory. 15355 15356Implemented enhanced status/error checking across the entire 15357Hardware manager subsystem. Any hardware errors (reported from 15358the OSL) are now bubbled up and will abort a running control 15359method. 15360 15361 15362Fixed a problem where the per-ACPI-table integer width (32 or 64) 15363was stored only with control method nodes, causing a fault when 15364non-control method code was executed during table loading. The 15365solution implemented uses a global variable to indicate table 15366width across the entire ACPI subsystem. Therefore, ACPI CA does 15367not support mixed integer widths across different ACPI tables 15368(DSDT, SSDT). 15369 15370Fixed a problem where NULL extended fields (X fields) in an ACPI 153712.0 ACPI FADT caused the table load to fail. Although the 15372existing ACPI specification is a bit fuzzy on this topic, the new 15373behavior is to fall back on a ACPI 1.0 field if the corresponding 15374ACPI 2.0 X field is zero (even though the table revision indicates 15375a full ACPI 2.0 table.) The ACPI specification will be updated to 15376clarify this issue. 15377 15378Fixed a problem with the SystemMemory operation region handler 15379where memory was always accessed byte-wise even if the AML- 15380specified access width was larger than a byte. This caused 15381problems on systems with memory-mapped I/O. Memory is now 15382accessed with the width specified. On systems that do not support 15383non-aligned transfers, a check is made to guarantee proper address 15384alignment before proceeding in order to avoid an AML-caused 15385alignment fault within the kernel. 15386 15387 15388Fixed a problem with the ExtendedIrq resource where only one byte 15389of the 4-byte Irq field was extracted. 15390 15391Fixed the AcpiExDigitsNeeded() procedure to support _UID. This 15392function was out of date and required a rewrite. 15393 15394Code and Data Size: Current core subsystem library sizes are shown 15395below. These are the code and data sizes for the acpica.lib 15396produced by the Microsoft Visual C++ 6.0 compiler, and these 15397values do not include any ACPI driver or OSPM code. The debug 15398version of the code includes the debug output trace mechanism and 15399has a larger code and data size. Note that these values will vary 15400depending on the efficiency of the compiler and the compiler 15401options 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 154112) Linux 15412 15413PCI IRQ routing fixes (Dominik Brodowski) 15414 15415 154163) iASL Compiler Version X2042: 15417 15418Implemented an additional compile-time error check for a field 15419unit whose size + minimum access width would cause a run-time 15420access beyond the end-of-region. Previously, only the field size 15421itself was checked. 15422 15423The Core subsystem and iASL compiler now share a common parse 15424object in preparation for compile-time evaluation of the type 154253/4/5 ASL operators. 15426 15427 15428---------------------------------------- 15429Summary of changes for this release: 03_29_02 15430 154311) ACPI CA Core Subsystem Version 20020329: 15432 15433Implemented support for late evaluation of TermArg operands to 15434Buffer and Package objects. This allows complex expressions to be 15435used in the declarations of these object types. 15436 15437Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI 154381.0, if the field was larger than 32 bits, it was returned as a 15439buffer - otherwise it was returned as an integer. In ACPI 2.0, 15440the field is returned as a buffer only if the field is larger than 1544164 bits. The TableRevision is now considered when making this 15442conversion to avoid incompatibility with existing ASL code. 15443 15444Implemented logical addressing for AcpiOsGetRootPointer. This 15445allows an RSDP with either a logical or physical address. With 15446this support, the host OS can now override all ACPI tables with 15447one logical RSDP. Includes implementation of "typed" pointer 15448support to allow a common data type for both physical and logical 15449pointers internally. This required a change to the 15450AcpiOsGetRootPointer interface. 15451 15452Implemented the use of ACPI 2.0 Generic Address Structures for all 15453GPE, Fixed Event, and PM Timer I/O. This allows the use of memory 15454mapped I/O for these ACPI features. 15455 15456Initialization now ignores not only non-required tables (All 15457tables other than the FADT, FACS, DSDT, and SSDTs), but also does 15458not validate the table headers of unrecognized tables. 15459 15460Fixed a problem where a notify handler could only be 15461installed/removed on an object of type Device. All "notify" 15462 15463objects are now supported -- Devices, Processor, Power, and 15464Thermal. 15465 15466Removed most verbosity from the ACPI_DB_INFO debug level. Only 15467critical information is returned when this debug level is enabled. 15468 15469Code and Data Size: Current core subsystem library sizes are shown 15470below. These are the code and data sizes for the acpica.lib 15471produced by the Microsoft Visual C++ 6.0 compiler, and these 15472values do not include any ACPI driver or OSPM code. The debug 15473version of the code includes the debug output trace mechanism and 15474has a larger code and data size. Note that these values will vary 15475depending on the efficiency of the compiler and the compiler 15476options 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 154862) Linux: 15487 15488The processor driver (acpi_processor.c) now fully supports ACPI 154892.0-based processor performance control (e.g. Intel(R) 15490SpeedStep(TM) technology) Note that older laptops that only have 15491the 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 15494transitions will be included in the next version of ospmd.] The 15495idle handler was modified to more aggressively use C2, and PIIX4 15496errata handling underwent a complete overhaul (big thanks to 15497Dominik Brodowski). 15498 15499Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR- 15500based devices in the ACPI namespace are now dynamically bound 15501(associated) with their PCI counterparts (e.g. PCI1->01:00.0). 15502This allows, among other things, ACPI to resolve bus numbers for 15503subordinate PCI bridges. 15504 15505Enhanced PCI IRQ routing to get the proper bus number for _PRT 15506entries defined underneath PCI bridges. 15507 15508Added IBM 600E to bad bios list due to invalid _ADR value for 15509PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing. 15510 15511In the process of adding full MADT support (e.g. IOAPIC) for IA32 15512(acpi.c, mpparse.c) -- stay tuned. 15513 15514Added back visual differentiation between fixed-feature and 15515control-method buttons in dmesg. Buttons are also subtyped (e.g. 15516button/power/PWRF) to simplify button identification. 15517 15518We no longer use -Wno-unused when compiling debug. Please ignore 15519any "_THIS_MODULE defined but not used" messages. 15520 15521Can now shut down the system using "magic sysrq" key. 15522 15523 155243) iASL Compiler version 2041: 15525 15526Fixed a problem where conversion errors for hex/octal/decimal 15527constants were not reported. 15528 15529Implemented a fix for the General Register template Address field. 15530This field was 8 bits when it should be 64. 15531 15532Fixed a problem where errors/warnings were no longer being emitted 15533within the listing output file. 15534 15535Implemented the ACPI 2.0A restriction on ACPI Table Signatures to 15536exactly 4 characters, alphanumeric only. 15537 15538 15539 15540 15541---------------------------------------- 15542Summary of changes for this release: 03_08_02 15543 15544 155451) ACPI CA Core Subsystem Version 20020308: 15546 15547Fixed a problem with AML Fields where the use of the "AccessAny" 15548keyword could cause an interpreter error due to attempting to read 15549or write beyond the end of the parent Operation Region. 15550 15551Fixed a problem in the SystemMemory Operation Region handler where 15552an attempt was made to map memory beyond the end of the region. 15553This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY" 15554errors on some Linux systems. 15555 15556Fixed a problem where the interpreter/namespace "search to root" 15557algorithm was not functioning for some object types. Relaxed the 15558internal restriction on the search to allow upsearches for all 15559external object types as well as most internal types. 15560 15561 155622) Linux: 15563 15564We now use safe_halt() macro versus individual calls to sti | hlt. 15565 15566Writing to the processor limit interface should now work. "echo 1" 15567will increase the limit, 2 will decrease, and 0 will reset to the 15568 15569default. 15570 15571 155723) ASL compiler: 15573 15574Fixed segfault on Linux version. 15575 15576 15577---------------------------------------- 15578Summary of changes for this release: 02_25_02 15579 155801) ACPI CA Core Subsystem: 15581 15582 15583Fixed a problem where the GPE bit masks were not initialized 15584properly, causing erratic GPE behavior. 15585 15586Implemented limited support for multiple calling conventions. The 15587code can be generated with either the VPL (variable parameter 15588list, or "C") convention, or the FPL (fixed parameter list, or 15589"Pascal") convention. The core subsystem is about 3.4% smaller 15590when generated with FPL. 15591 15592 155932) Linux 15594 15595Re-add some /proc/acpi/event functionality that was lost during 15596the rewrite 15597 15598Resolved issue with /proc events for fixed-feature buttons showing 15599up as the system device. 15600 15601Fixed checks on C2/C3 latencies to be inclusive of maximum values. 15602 15603Replaced AE_ERRORs in acpi_osl.c with more specific error codes. 15604 15605Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi" 15606 15607Fixed limit interface & usage to fix bugs with passive cooling 15608hysterisis. 15609 15610Restructured PRT support. 15611 15612 15613---------------------------------------- 15614Summary of changes for this label: 02_14_02 15615 15616 156171) ACPI CA Core Subsystem: 15618 15619Implemented support in AcpiLoadTable to allow loading of FACS and 15620FADT tables. 15621 15622Suport for the now-obsolete interim 0.71 64-bit ACPI tables has 15623been removed. All 64-bit platforms should be migrated to the ACPI 156242.0 tables. The actbl71.h header has been removed from the source 15625tree. 15626 15627All C macros defined within the subsystem have been prefixed with 15628"ACPI_" to avoid collision with other system include files. 15629 15630Removed the return value for the two AcpiOsPrint interfaces, since 15631it is never used and causes lint warnings for ignoring the return 15632value. 15633 15634Added error checking to all internal mutex acquire and release 15635calls. Although a failure from one of these interfaces is 15636probably a fatal system error, these checks will cause the 15637immediate abort of the currently executing method or interface. 15638 15639Fixed a problem where the AcpiSetCurrentResources interface could 15640fault. This was a side effect of the deployment of the new memory 15641allocation model. 15642 15643Fixed a couple of problems with the Global Lock support introduced 15644in the last major build. The "common" (1.0/2.0) internal FACS was 15645being overwritten with the FACS signature and clobbering the 15646Global Lock pointer. Also, the actual firmware FACS was being 15647unmapped after construction of the "common" FACS, preventing 15648access to the actual Global Lock field within it. The "common" 15649internal FACS is no longer installed as an actual ACPI table; it 15650is used simply as a global. 15651 15652Code and Data Size: Current core subsystem library sizes are shown 15653below. These are the code and data sizes for the acpica.lib 15654produced by the Microsoft Visual C++ 6.0 compiler, and these 15655values do not include any ACPI driver or OSPM code. The debug 15656version of the code includes the debug output trace mechanism and 15657has a larger code and data size. Note that these values will vary 15658depending on the efficiency of the compiler and the compiler 15659options 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 156692) Linux 15670 15671Updated Linux-specific code for core macro and OSL interface 15672changes described above. 15673 15674Improved /proc/acpi/event. It now can be opened only once and has 15675proper poll functionality. 15676 15677Fixed and restructured power management (acpi_bus). 15678 15679Only create /proc "view by type" when devices of that class exist. 15680 15681Fixed "charging/discharging" bug (and others) in acpi_battery. 15682 15683Improved thermal zone code. 15684 15685 156863) ASL Compiler, version X2039: 15687 15688 15689Implemented the new compiler restriction on ASL String hex/octal 15690escapes to non-null, ASCII values. An error results if an invalid 15691value is used. (This will require an ACPI 2.0 specification 15692change.) 15693 15694AML object labels that are output to the optional C and ASM source 15695are now prefixed with both the ACPI table signature and table ID 15696to help guarantee uniqueness within a large BIOS project. 15697 15698 15699---------------------------------------- 15700Summary of changes for this label: 02_01_02 15701 157021) ACPI CA Core Subsystem: 15703 15704ACPI 2.0 support is complete in the entire Core Subsystem and the 15705ASL compiler. All new ACPI 2.0 operators are implemented and all 15706other changes for ACPI 2.0 support are complete. With 15707simultaneous code and data optimizations throughout the subsystem, 15708ACPI 2.0 support has been implemented with almost no additional 15709cost in terms of code and data size. 15710 15711Implemented a new mechanism for allocation of return buffers. If 15712the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will 15713be allocated on behalf of the caller. Consolidated all return 15714buffer validation and allocation to a common procedure. Return 15715buffers will be allocated via the primary OSL allocation interface 15716since it appears that a separate pool is not needed by most users. 15717If a separate pool is required for these buffers, the caller can 15718still use the original mechanism and pre-allocate the buffer(s). 15719 15720Implemented support for string operands within the DerefOf 15721operator. 15722 15723Restructured the Hardware and Event managers to be table driven, 15724simplifying the source code and reducing the amount of generated 15725code. 15726 15727Split the common read/write low-level ACPI register bitfield 15728procedure into a separate read and write, simplifying the code 15729considerably. 15730 15731Obsoleted the AcpiOsCallocate OSL interface. This interface was 15732used only a handful of times and didn't have enough critical mass 15733for a separate interface. Replaced with a common calloc procedure 15734in the core. 15735 15736Fixed a reported problem with the GPE number mapping mechanism 15737that allows GPE1 numbers to be non-contiguous with GPE0. 15738Reorganized the GPE information and shrunk a large array that was 15739originally large enough to hold info for all possible GPEs (256) 15740to simply large enough to hold all GPEs up to the largest GPE 15741number on the machine. 15742 15743Fixed a reported problem with resource structure alignment on 64- 15744bit platforms. 15745 15746Changed the AcpiEnableEvent and AcpiDisableEvent external 15747interfaces to not require any flags for the common case of 15748enabling/disabling a GPE. 15749 15750Implemented support to allow a "Notify" on a Processor object. 15751 15752Most TBDs in comments within the source code have been resolved 15753and eliminated. 15754 15755 15756Fixed a problem in the interpreter where a standalone parent 15757prefix (^) was not handled correctly in the interpreter and 15758debugger. 15759 15760Removed obsolete and unnecessary GPE save/restore code. 15761 15762Implemented Field support in the ASL Load operator. This allows a 15763table to be loaded from a named field, in addition to loading a 15764table directly from an Operation Region. 15765 15766Implemented timeout and handle support in the external Global Lock 15767interfaces. 15768 15769Fixed a problem in the AcpiDump utility where pathnames were no 15770longer being generated correctly during the dump of named objects. 15771 15772Modified the AML debugger to give a full display of if/while 15773predicates instead of just one AML opcode at a time. (The 15774predicate can have several nested ASL statements.) The old method 15775was confusing during single stepping. 15776 15777Code and Data Size: Current core subsystem library sizes are shown 15778below. These are the code and data sizes for the acpica.lib 15779produced by the Microsoft Visual C++ 6.0 compiler, and these 15780values do not include any ACPI driver or OSPM code. The debug 15781version of the code includes the debug output trace mechanism and 15782has a larger code and data size. Note that these values will vary 15783depending on the efficiency of the compiler and the compiler 15784options 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 157932) Linux 15794 15795 Implemented fix for PIIX reverse throttling errata (Processor 15796driver) 15797 15798Added new Limit interface (Processor and Thermal drivers) 15799 15800New thermal policy (Thermal driver) 15801 15802Many updates to /proc 15803 15804Battery "low" event support (Battery driver) 15805 15806Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers) 15807 15808IA32 - IA64 initialization unification, no longer experimental 15809 15810Menuconfig options redesigned 15811 158123) ASL Compiler, version X2037: 15813 15814Implemented several new output features to simplify integration of 15815AML code into firmware: 1) Output the AML in C source code with 15816labels for each named ASL object. The original ASL source code 15817is interleaved as C comments. 2) Output the AML in ASM source code 15818with labels and interleaved ASL source. 3) Output the AML in 15819raw hex table form, in either C or ASM. 15820 15821Implemented support for optional string parameters to the 15822LoadTable operator. 15823 15824Completed support for embedded escape sequences within string 15825literals. The compiler now supports all single character escapes 15826as well as the Octal and Hex escapes. Note: the insertion of a 15827null byte into a string literal (via the hex/octal escape) causes 15828the string to be immediately terminated. A warning is issued. 15829 15830Fixed a problem where incorrect AML was generated for the case 15831where an ASL namepath consists of a single parent prefix ( 15832 15833) with no trailing name segments. 15834 15835The compiler has been successfully generated with a 64-bit C 15836compiler. 15837 15838 15839 15840 15841---------------------------------------- 15842Summary of changes for this label: 12_18_01 15843 158441) Linux 15845 15846Enhanced blacklist with reason and severity fields. Any table's 15847signature may now be used to identify a blacklisted system. 15848 15849Call _PIC control method to inform the firmware which interrupt 15850model the OS is using. Turn on any disabled link devices. 15851 15852Cleaned up busmgr /proc error handling (Andreas Dilger) 15853 15854 2) ACPI CA Core Subsystem: 15855 15856Implemented ACPI 2.0 semantics for the "Break" operator (Exit from 15857while loop) 15858 15859Completed implementation of the ACPI 2.0 "Continue", 15860"ConcatenateResTemplate", "DataTableRegion", and "LoadTable" 15861operators. All new ACPI 2.0 operators are now implemented in both 15862the ASL compiler and the AML interpreter. The only remaining ACPI 158632.0 task is support for the String data type in the DerefOf 15864operator. Fixed a problem with AcquireMutex where the status code 15865was lost if the caller had to actually wait for the mutex. 15866 15867Increased the maximum ASL Field size from 64K bits to 4G bits. 15868 15869Completed implementation of the external Global Lock interfaces -- 15870AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and 15871Handler parameters were added. 15872 15873Completed another pass at removing warnings and issues when 15874compiling with 64-bit compilers. The code now compiles cleanly 15875with the Intel 64-bit C/C++ compiler. Most notably, the pointer 15876add and subtract (diff) macros have changed considerably. 15877 15878 15879Created and deployed a new ACPI_SIZE type that is 64-bits wide on 1588064-bit platforms, 32-bits on all others. This type is used 15881wherever memory allocation and/or the C sizeof() operator is used, 15882and affects the OSL memory allocation interfaces AcpiOsAllocate 15883and AcpiOsCallocate. 15884 15885Implemented sticky user breakpoints in the AML debugger. 15886 15887Code and Data Size: Current core subsystem library sizes are shown 15888below. These are the code and data sizes for the acpica.lib 15889produced by the Microsoft Visual C++ 6.0 compiler, and these 15890values do not include any ACPI driver or OSPM code. The debug 15891version of the code includes the debug output trace mechanism and 15892has a larger code and data size. Note that these values will vary 15893depending on the efficiency of the compiler and the compiler 15894options 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 15905Now checks for (and generates an error if detected) the use of a 15906Break or Continue statement without an enclosing While statement. 15907 15908 15909Successfully generated the compiler with the Intel 64-bit C 15910compiler. 15911 15912 ---------------------------------------- 15913Summary of changes for this label: 12_05_01 15914 15915 1) ACPI CA Core Subsystem: 15916 15917The ACPI 2.0 CopyObject operator is fully implemented. This 15918operator creates a new copy of an object (and is also used to 15919bypass the "implicit conversion" mechanism of the Store operator.) 15920 15921The ACPI 2.0 semantics for the SizeOf operator are fully 15922implemented. The change is that performing a SizeOf on a 15923reference object causes an automatic dereference of the object to 15924tha actual value before the size is evaluated. This behavior was 15925undefined in ACPI 1.0. 15926 15927The ACPI 2.0 semantics for the Extended IRQ resource descriptor 15928have been implemented. The interrupt polarity and mode are now 15929independently set. 15930 15931Fixed a problem where ASL Constants (Zero, One, Ones, Revision) 15932appearing in Package objects were not properly converted to 15933integers when the internal Package was converted to an external 15934object (via the AcpiEvaluateObject interface.) 15935 15936Fixed a problem with the namespace object deletion mechanism for 15937objects created by control methods. There were two parts to this 15938problem: 1) Objects created during the initialization phase method 15939parse were not being deleted, and 2) The object owner ID mechanism 15940to track objects was broken. 15941 15942Fixed a problem where the use of the ASL Scope operator within a 15943control method would result in an invalid opcode exception. 15944 15945Fixed a problem introduced in the previous label where the buffer 15946length required for the _PRT structure was not being returned 15947correctly. 15948 15949Code and Data Size: Current core subsystem library sizes are shown 15950below. These are the code and data sizes for the acpica.lib 15951produced by the Microsoft Visual C++ 6.0 compiler, and these 15952values do not include any ACPI driver or OSPM code. The debug 15953version of the code includes the debug output trace mechanism and 15954has a larger code and data size. Note that these values will vary 15955depending on the efficiency of the compiler and the compiler 15956options 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 15968Updated all files to apply cleanly against 2.4.16. 15969 15970Added basic PCI Interrupt Routing Table (PRT) support for IA32 15971(acpi_pci.c), and unified the PRT code for IA32 and IA64. This 15972version supports both static and dyanmic PRT entries, but dynamic 15973entries are treated as if they were static (not yet 15974reconfigurable). Architecture- specific code to use this data is 15975absent on IA32 but should be available shortly. 15976 15977Changed the initialization sequence to start the ACPI interpreter 15978(acpi_init) prior to initialization of the PCI driver (pci_init) 15979in init/main.c. This ordering is required to support PRT and 15980facilitate other (future) enhancement. A side effect is that the 15981ACPI bus driver and certain device drivers can no longer be loaded 15982as modules. 15983 15984Modified the 'make menuconfig' options to allow PCI Interrupt 15985Routing support to be included without the ACPI Bus and other 15986device drivers. 15987 15988 3) ASL Compiler, version X2033: 15989 15990Fixed some issues with the use of the new CopyObject and 15991DataTableRegion operators. Both are fully functional. 15992 15993 ---------------------------------------- 15994Summary 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 16000Updated Index support to match ACPI 2.0 semantics. Storing a 16001Integer, String, or Buffer to an Index of a Buffer will store only 16002the least-significant byte of the source to the Indexed buffer 16003byte. Multiple writes are not performed. 16004 16005Fixed a problem where the access type used in an AccessAs ASL 16006operator was not recorded correctly into the field object. 16007 16008Fixed a problem where ASL Event objects were created in a 16009signalled state. Events are now created in an unsignalled state. 16010 16011The internal object cache is now purged after table loading and 16012initialization to reduce the use of dynamic kernel memory -- on 16013the assumption that object use is greatest during the parse phase 16014of the entire table (versus the run-time use of individual control 16015methods.) 16016 16017ACPI 2.0 variable-length packages are now fully operational. 16018 16019Code and Data Size: Code and Data optimizations have permitted new 16020feature development with an actual reduction in the library size. 16021Current core subsystem library sizes are shown below. These are 16022the code and data sizes for the acpica.lib produced by the 16023Microsoft Visual C++ 6.0 compiler, and these values do not include 16024any ACPI driver or OSPM code. The debug version of the code 16025includes the debug output trace mechanism and has a larger code 16026and data size. Note that these values will vary depending on the 16027efficiency of the compiler and the compiler options used during 16028generation. 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 16040Enhanced the ACPI boot-time initialization code to allow the use 16041of Local APIC tables for processor enumeration on IA-32, and to 16042pave the way for a fully MPS-free boot (on SMP systems) in the 16043near future. This functionality replaces 16044arch/i386/kernel/acpitables.c, which was introduced in an earlier 160452.4.15-preX release. To enable this feature you must add 16046"acpi_boot=on" to the kernel command line -- see the help entry 16047for CONFIG_ACPI_BOOT for more information. An IA-64 release is in 16048the works... 16049 16050Restructured the configuration options to allow boot-time table 16051parsing support without inclusion of the ACPI Interpreter (and 16052other) code. 16053 16054NOTE: This release does not include fixes for the reported events, 16055power-down, and thermal passive cooling issues (coming soon). 16056 16057 3) ASL Compiler: 16058 16059Added additional typechecking for Fields within restricted access 16060Operation Regions. All fields within EC and CMOS regions must be 16061declared with ByteAcc. All fields withing SMBus regions must be 16062declared with the BufferAcc access type. 16063 16064Fixed a problem where the listing file output of control methods 16065no longer interleaved the actual AML code with the ASL source 16066code. 16067 16068 16069 16070 16071---------------------------------------- 16072Summary of changes for this label: 11_09_01 16073 160741) ACPI CA Core Subsystem: 16075 16076Implemented ACPI 2.0-defined support for writes to fields with a 16077Buffer, String, or Integer source operand that is smaller than the 16078target field. In these cases, the source operand is zero-extended 16079to fill the target field. 16080 16081Fixed a problem where a Field starting bit offset (within the 16082parent operation region) was calculated incorrectly if the 16083 16084alignment of the field differed from the access width. This 16085affected CreateWordField, CreateDwordField, CreateQwordField, and 16086possibly other fields that use the "AccessAny" keyword. 16087 16088Fixed a problem introduced in the 11_02_01 release where indirect 16089stores through method arguments did not operate correctly. 16090 160912) Linux: 16092 16093Implemented boot-time ACPI table parsing support 16094(CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code 16095facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than 16096legacy BIOS interfaces (e.g. MPS) for the configuration of system 16097processors, memory, and interrupts during setup_arch(). Note that 16098this patch does not include the required architecture-specific 16099changes required to apply this information -- subsequent patches 16100will be posted for both IA32 and IA64 to achieve this. 16101 16102Added low-level sleep support for IA32 platforms, courtesy of Pat 16103Mochel. This allows IA32 systems to transition to/from various 16104sleeping states (e.g. S1, S3), although the lack of a centralized 16105driver model and power-manageable drivers will prevent its 16106(successful) use on most systems. 16107 16108Revamped the ACPI 'menuconfig' layout: created new "ACPI Support" 16109submenu, unified IA32 and IA64 options, added new "Boot using ACPI 16110tables" option, etc. 16111 16112Increased 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 16114transactions. 16115 16116 ---------------------------------------- 16117Summary of changes for this label: 11_02_01 16118 161191) ACPI CA Core Subsystem: 16120 16121ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access 16122(QWordAcc keyword). All ACPI 2.0 64-bit support is now 16123implemented. 16124 16125OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required 16126changes to support ACPI 2.0 Qword field access. Read/Write 16127PciConfiguration(), Read/Write Memory(), and Read/Write Port() now 16128accept an ACPI_INTEGER (64 bits) as the value parameter. Also, 16129the value parameter for the address space handler interface is now 16130an ACPI_INTEGER. OSL implementations of these interfaces must now 16131handle the case where the Width parameter is 64. 16132 16133Index Fields: Fixed a problem where unaligned bit assembly and 16134disassembly for IndexFields was not supported correctly. 16135 16136Index and Bank Fields: Nested Index and Bank Fields are now 16137supported. During field access, a check is performed to ensure 16138that the value written to an Index or Bank register is not out of 16139the range of the register. The Index (or Bank) register is 16140written before each access to the field data. Future support will 16141include allowing individual IndexFields to be wider than the 16142DataRegister width. 16143 16144Fields: Fixed a problem where the AML interpreter was incorrectly 16145attempting to write beyond the end of a Field/OpRegion. This was 16146a boundary case that occurred when a DWORD field was written to a 16147BYTE access OpRegion, forcing multiple writes and causing the 16148interpreter to write one datum too many. 16149 16150Fields: Fixed a problem with Field/OpRegion access where the 16151starting bit address of a field was incorrectly calculated if the 16152current access type was wider than a byte (WordAcc, DwordAcc, or 16153QwordAcc). 16154 16155Fields: Fixed a problem where forward references to individual 16156FieldUnits (individual Field names within a Field definition) were 16157not resolved during the AML table load. 16158 16159Fields: Fixed a problem where forward references from a Field 16160definition to the parent Operation Region definition were not 16161resolved during the AML table load. 16162 16163Fields: Duplicate FieldUnit names within a scope are now detected 16164during AML table load. 16165 16166Acpi Interfaces: Fixed a problem where the AcpiGetName() interface 16167returned an incorrect name for the root node. 16168 16169Code and Data Size: Code and Data optimizations have permitted new 16170feature development with an actual reduction in the library size. 16171Current core subsystem library sizes are shown below. These are 16172the code and data sizes for the acpica.lib produced by the 16173Microsoft Visual C++ 6.0 compiler, and these values do not include 16174any ACPI driver or OSPM code. The debug version of the code 16175includes the debug output trace mechanism and has a larger code 16176and data size. Note that these values will vary depending on the 16177efficiency of the compiler and the compiler options used during 16178generation. 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 16190Improved /proc processor output (Pavel Machek) Re-added 16191MODULE_LICENSE("GPL") to all modules. 16192 16193 3) ASL Compiler version X2030: 16194 16195Duplicate FieldUnit names within a scope are now detected and 16196flagged as errors. 16197 16198 4) Documentation: 16199 16200Programmer Reference updated to reflect OSL and address space 16201handler interface changes described above. 16202 16203---------------------------------------- 16204Summary of changes for this label: 10_18_01 16205 16206ACPI CA Core Subsystem: 16207 16208Fixed a problem with the internal object reference count mechanism 16209that occasionally caused premature object deletion. This resolves 16210all of the outstanding problem reports where an object is deleted 16211in the middle of an interpreter evaluation. Although this problem 16212only showed up in rather obscure cases, the solution to the 16213problem involved an adjustment of all reference counts involving 16214objects attached to namespace nodes. 16215 16216Fixed a problem with Field support in the interpreter where 16217writing to an aligned field whose length is an exact multiple (2 16218or greater) of the field access granularity would cause an attempt 16219to write beyond the end of the field. 16220 16221The top level AML opcode execution functions within the 16222interpreter have been renamed with a more meaningful and 16223consistent naming convention. The modules exmonad.c and 16224exdyadic.c were eliminated. New modules are exoparg1.c, 16225exoparg2.c, exoparg3.c, and exoparg6.c. 16226 16227Support for the ACPI 2.0 "Mid" ASL operator has been implemented. 16228 16229Fixed a problem where the AML debugger was causing some internal 16230objects to not be deleted during subsystem termination. 16231 16232Fixed a problem with the external AcpiEvaluateObject interface 16233where the subsystem would fault if the named object to be 16234evaluated refered to a constant such as Zero, Ones, etc. 16235 16236Fixed a problem with IndexFields and BankFields where the 16237subsystem would fault if the index, data, or bank registers were 16238not defined in the same scope as the field itself. 16239 16240Added printf format string checking for compilers that support 16241this feature. Corrected more than 50 instances of issues with 16242format specifiers within invocations of ACPI_DEBUG_PRINT 16243throughout the core subsystem code. 16244 16245The ASL "Revision" operator now returns the ACPI support level 16246implemented in the core - the value "2" since the ACPI 2.0 support 16247is more than 50% implemented. 16248 16249Enhanced the output of the AML debugger "dump namespace" command 16250to output in a more human-readable form. 16251 16252Current core subsystem library code sizes are shown below. These 16253 16254are the code and data sizes for the acpica.lib produced by the 16255Microsoft Visual C++ 6.0 compiler, and these values do not include 16256any ACPI driver or OSPM code. The debug version of the code 16257includes the full debug trace mechanism -- leading to a much 16258 16259larger code and data size. Note that these values will vary 16260depending on the efficiency of the compiler and the compiler 16261options 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 16272Linux: 16273 16274Implemented a "Bad BIOS Blacklist" to track machines that have 16275known ASL/AML problems. 16276 16277Enhanced the /proc interface for the thermal zone driver and added 16278support for _HOT (the critical suspend trip point). The 'info' 16279file now includes threshold/policy information, and allows setting 16280of _SCP (cooling preference) and _TZP (polling frequency) values 16281to the 'info' file. Examples: "echo tzp=5 > info" sets the polling 16282frequency to 5 seconds, and "echo scp=1 > info" sets the cooling 16283preference to the passive/quiet mode (if supported by the ASL). 16284 16285Implemented a workaround for a gcc bug that resuted in an OOPs 16286when loading the control method battery driver. 16287 16288 ---------------------------------------- 16289Summary of changes for this label: 09_20_01 16290 16291 ACPI CA Core Subsystem: 16292 16293The AcpiEnableEvent and AcpiDisableEvent interfaces have been 16294modified to allow individual GPE levels to be flagged as wake- 16295enabled (i.e., these GPEs are to remain enabled when the platform 16296sleeps.) 16297 16298The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now 16299support wake-enabled GPEs. This means that upon entering the 16300sleep state, all GPEs that are not wake-enabled are disabled. 16301When leaving the sleep state, these GPEs are reenabled. 16302 16303A local double-precision divide/modulo module has been added to 16304enhance portability to OS kernels where a 64-bit math library is 16305not available. The new module is "utmath.c". 16306 16307Several optimizations have been made to reduce the use of CPU 16308stack. Originally over 2K, the maximum stack usage is now below 163092K at 1860 bytes (1.82k) 16310 16311Fixed a problem with the AcpiGetFirmwareTable interface where the 16312root table pointer was not mapped into a logical address properly. 16313 16314Fixed a problem where a NULL pointer was being dereferenced in the 16315interpreter code for the ASL Notify operator. 16316 16317Fixed a problem where the use of the ASL Revision operator 16318returned an error. This operator now returns the current version 16319of the ACPI CA core subsystem. 16320 16321Fixed a problem where objects passed as control method parameters 16322to AcpiEvaluateObject were always deleted at method termination. 16323However, these objects may end up being stored into the namespace 16324by the called method. The object reference count mechanism was 16325applied to these objects instead of a force delete. 16326 16327Fixed a problem where static strings or buffers (contained in the 16328AML code) that are declared as package elements within the ASL 16329code could cause a fault because the interpreter would attempt to 16330delete them. These objects are now marked with the "static 16331object" flag to prevent any attempt to delete them. 16332 16333Implemented an interpreter optimization to use operands directly 16334from the state object instead of extracting the operands to local 16335variables. This reduces stack use and code size, and improves 16336performance. 16337 16338The module exxface.c was eliminated as it was an unnecessary extra 16339layer of code. 16340 16341Current core subsystem library code sizes are shown below. These 16342are the code and data sizes for the acpica.lib produced by the 16343Microsoft Visual C++ 6.0 compiler, and these values do not include 16344any ACPI driver or OSPM code. The debug version of the code 16345includes the full debug trace mechanism -- leading to a much 16346larger code and data size. Note that these values will vary 16347depending on the efficiency of the compiler and the compiler 16348options used during generation. 16349 16350 Non-Debug Version: 65K Code, 5K Data, 70K Total 16351(Previously 69K) Debug Version: 138K Code, 58K Data, 196K 16352Total (Previously 195K) 16353 16354Linux: 16355 16356Support for ACPI 2.0 64-bit integers has been added. All ACPI 16357Integer objects are now 64 bits wide 16358 16359All Acpi data types and structures are now in lower case. Only 16360Acpi macros are upper case for differentiation. 16361 16362 Documentation: 16363 16364Changes to the external interfaces as described above. 16365 16366 ---------------------------------------- 16367Summary of changes for this label: 08_31_01 16368 16369 ACPI CA Core Subsystem: 16370 16371A bug with interpreter implementation of the ASL Divide operator 16372was found and fixed. The implicit function return value (not the 16373explicit store operands) was returning the remainder instead of 16374the quotient. This was a longstanding bug and it fixes several 16375known outstanding issues on various platforms. 16376 16377The ACPI_DEBUG_PRINT and function trace entry/exit macros have 16378been further optimized for size. There are 700 invocations of the 16379DEBUG_PRINT macro alone, so each optimization reduces the size of 16380the debug version of the subsystem significantly. 16381 16382A stack trace mechanism has been implemented. The maximum stack 16383usage is about 2K on 32-bit platforms. The debugger command "stat 16384stack" will display the current maximum stack usage. 16385 16386All public symbols and global variables within the subsystem are 16387now prefixed with the string "Acpi". This keeps all of the 16388symbols grouped together in a kernel map, and avoids conflicts 16389with other kernel subsystems. 16390 16391Most of the internal fixed lookup tables have been moved into the 16392code segment via the const operator. 16393 16394Several enhancements have been made to the interpreter to both 16395reduce the code size and improve performance. 16396 16397Current core subsystem library code sizes are shown below. These 16398are the code and data sizes for the acpica.lib produced by the 16399Microsoft Visual C++ 6.0 compiler, and these values do not include 16400any ACPI driver or OSPM code. The debug version of the code 16401includes the full debug trace mechanism which contains over 700 16402invocations of the DEBUG_PRINT macro, 500 function entry macro 16403invocations, and over 900 function exit macro invocations -- 16404leading to a much larger code and data size. Note that these 16405values will vary depending on the efficiency of the compiler and 16406the compiler options used during generation. 16407 16408 Non-Debug Version: 64K Code, 5K Data, 69K Total 16409Debug Version: 137K Code, 58K Data, 195K Total 16410 16411 Linux: 16412 16413Implemented wbinvd() macro, pending a kernel-wide definition. 16414 16415Fixed /proc/acpi/event to handle poll() and short reads. 16416 16417 ASL Compiler, version X2026: 16418 16419Fixed a problem introduced in the previous label where the AML 16420 16421code emitted for package objects produced packages with zero 16422length. 16423 16424 ---------------------------------------- 16425Summary of changes for this label: 08_16_01 16426 16427ACPI CA Core Subsystem: 16428 16429The following ACPI 2.0 ASL operators have been implemented in the 16430AML interpreter (These are already supported by the Intel ASL 16431compiler): ToDecimalString, ToHexString, ToString, ToInteger, and 16432ToBuffer. Support for 64-bit AML constants is implemented in the 16433AML parser, debugger, and disassembler. 16434 16435The internal memory tracking mechanism (leak detection code) has 16436been upgraded to reduce the memory overhead (a separate tracking 16437block is no longer allocated for each memory allocation), and now 16438supports all of the internal object caches. 16439 16440The data structures and code for the internal object caches have 16441been coelesced and optimized so that there is a single cache and 16442memory list data structure and a single group of functions that 16443implement generic cache management. This has reduced the code 16444size in both the debug and release versions of the subsystem. 16445 16446The DEBUG_PRINT macro(s) have been optimized for size and replaced 16447by ACPI_DEBUG_PRINT. The syntax for this macro is slightly 16448different, because it generates a single call to an internal 16449function. This results in a savings of about 90 bytes per 16450invocation, resulting in an overall code and data savings of about 1645116% in the debug version of the subsystem. 16452 16453 Linux: 16454 16455Fixed C3 disk corruption problems and re-enabled C3 on supporting 16456machines. 16457 16458Integrated low-level sleep code by Patrick Mochel. 16459 16460Further tweaked source code Linuxization. 16461 16462Other minor fixes. 16463 16464 ASL Compiler: 16465 16466Support for ACPI 2.0 variable length packages is fixed/completed. 16467 16468Fixed a problem where the optional length parameter for the ACPI 164692.0 ToString operator. 16470 16471Fixed multiple extraneous error messages when a syntax error is 16472detected within the declaration line of a control method. 16473 16474 ---------------------------------------- 16475Summary of changes for this label: 07_17_01 16476 16477ACPI CA Core Subsystem: 16478 16479Added a new interface named AcpiGetFirmwareTable to obtain any 16480ACPI table via the ACPI signature. The interface can be called at 16481any time during kernel initialization, even before the kernel 16482virtual memory manager is initialized and paging is enabled. This 16483allows kernel subsystems to obtain ACPI tables very early, even 16484before the ACPI CA subsystem is initialized. 16485 16486Fixed a problem where Fields defined with the AnyAcc attribute 16487could be resolved to the incorrect address under the following 16488conditions: 1) the field width is larger than 8 bits and 2) the 16489parent operation region is not defined on a DWORD boundary. 16490 16491Fixed a problem where the interpreter is not being locked during 16492namespace initialization (during execution of the _INI control 16493methods), causing an error when an attempt is made to release it 16494later. 16495 16496ACPI 2.0 support in the AML Interpreter has begun and will be 16497ongoing throughout the rest of this year. In this label, The Mod 16498operator is implemented. 16499 16500Added a new data type to contain full PCI addresses named 16501ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device, 16502and Function values. 16503 16504 Linux: 16505 16506Enhanced the Linux version of the source code to change most 16507capitalized ACPI type names to lowercase. For example, all 16508instances of ACPI_STATUS are changed to acpi_status. This will 16509result in a large diff, but the change is strictly cosmetic and 16510aligns the CA code closer to the Linux coding standard. 16511 16512OSL Interfaces: 16513 16514The interfaces to the PCI configuration space have been changed to 16515add the PCI Segment number and to split the single 32-bit combined 16516DeviceFunction field into two 16-bit fields. This was 16517accomplished by moving the four values that define an address in 16518PCI configuration space (segment, bus, device, and function) to 16519the new ACPI_PCI_ID structure. 16520 16521The changes to the PCI configuration space interfaces led to a 16522reexamination of the complete set of address space access 16523interfaces for PCI, I/O, and Memory. The previously existing 18 16524interfaces have proven difficult to maintain (any small change 16525must be propagated across at least 6 interfaces) and do not easily 16526allow for future expansion to 64 bits if necessary. Also, on some 16527systems, it would not be appropriate to demultiplex the access 16528width (8, 16, 32,or 64) before calling the OSL if the 16529corresponding native OS interfaces contain a similar access width 16530parameter. For these reasons, the 18 address space interfaces 16531have been replaced by these 6 new ones: 16532 16533AcpiOsReadPciConfiguration 16534AcpiOsWritePciConfiguration 16535AcpiOsReadMemory 16536AcpiOsWriteMemory 16537AcpiOsReadPort 16538AcpiOsWritePort 16539 16540Added a new interface named AcpiOsGetRootPointer to allow the OSL 16541to perform the platform and/or OS-specific actions necessary to 16542obtain the ACPI RSDP table pointer. On IA-32 platforms, this 16543interface will simply call down to the CA core to perform the low- 16544memory search for the table. On IA-64, the RSDP is obtained from 16545EFI. Migrating this interface to the OSL allows the CA core to 16546 16547remain OS and platform independent. 16548 16549Added a new interface named AcpiOsSignal to provide a generic 16550"function code and pointer" interface for various miscellaneous 16551signals and notifications that must be made to the host OS. The 16552first such signals are intended to support the ASL Fatal and 16553Breakpoint operators. In the latter case, the AcpiOsBreakpoint 16554interface has been obsoleted. 16555 16556The definition of the AcpiFormatException interface has been 16557changed to simplify its use. The caller no longer must supply a 16558buffer to the call; A pointer to a const string is now returned 16559directly. This allows the call to be easily used in printf 16560statements, etc. since the caller does not have to manage a local 16561buffer. 16562 16563 16564 ASL Compiler, Version X2025: 16565 16566The ACPI 2.0 Switch/Case/Default operators have been implemented 16567and are fully functional. They will work with all ACPI 1.0 16568interpreters, since the operators are simply translated to If/Else 16569pairs. 16570 16571The ACPI 2.0 ElseIf operator is implemented and will also work 16572with 1.0 interpreters, for the same reason. 16573 16574Implemented support for ACPI 2.0 variable-length packages. These 16575packages have a separate opcode, and their size is determined by 16576the interpreter at run-time. 16577 16578Documentation The ACPI CA Programmer Reference has been updated to 16579reflect the new interfaces and changes to existing interfaces. 16580 16581 ------------------------------------------ 16582Summary of changes for this label: 06_15_01 16583 16584 ACPI CA Core Subsystem: 16585 16586Fixed a problem where a DWORD-accessed field within a Buffer 16587object would get its byte address inadvertently rounded down to 16588the nearest DWORD. Buffers are always Byte-accessible. 16589 16590 ASL Compiler, version X2024: 16591 16592Fixed a problem where the Switch() operator would either fault or 16593hang the compiler. Note however, that the AML code for this ACPI 165942.0 operator is not yet implemented. 16595 16596Compiler uses the new AcpiOsGetTimer interface to obtain compile 16597timings. 16598 16599Implementation of the CreateField operator automatically converts 16600a reference to a named field within a resource descriptor from a 16601byte offset to a bit offset if required. 16602 16603Added some missing named fields from the resource descriptor 16604support. These are the names that are automatically created by the 16605compiler to reference fields within a descriptor. They are only 16606valid at compile time and are not passed through to the AML 16607interpreter. 16608 16609Resource descriptor named fields are now typed as Integers and 16610subject to compile-time typechecking when used in expressions. 16611 16612 ------------------------------------------ 16613Summary of changes for this label: 05_18_01 16614 16615 ACPI CA Core Subsystem: 16616 16617Fixed a couple of problems in the Field support code where bits 16618from adjacent fields could be returned along with the proper field 16619bits. Restructured the field support code to improve performance, 16620readability and maintainability. 16621 16622New DEBUG_PRINTP macro automatically inserts the procedure name 16623into the output, saving hundreds of copies of procedure name 16624strings within the source, shrinking the memory footprint of the 16625debug version of the core subsystem. 16626 16627 Source Code Structure: 16628 16629The source code directory tree was restructured to reflect the 16630current organization of the component architecture. Some files 16631and directories have been moved and/or renamed. 16632 16633 Linux: 16634 16635Fixed leaking kacpidpc processes. 16636 16637Fixed queueing event data even when /proc/acpi/event is not 16638opened. 16639 16640 ASL Compiler, version X2020: 16641 16642Memory allocation performance enhancement - over 24X compile time 16643improvement on large ASL files. Parse nodes and namestring 16644buffers are now allocated from a large internal compiler buffer. 16645 16646The temporary .SRC file is deleted unless the "-s" option is 16647specified 16648 16649The "-d" debug output option now sends all output to the .DBG file 16650instead of the console. 16651 16652"External" second parameter is now optional 16653 16654"ElseIf" syntax now properly allows the predicate 16655 16656Last operand to "Load" now recognized as a Target operand 16657 16658Debug object can now be used anywhere as a normal object. 16659 16660ResourceTemplate now returns an object of type BUFFER 16661 16662EISAID 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 16674Escaped backslash at the end of a string ("\\") scan/parse error 16675fixed 16676 16677"Revision" is now an object of type INTEGER. 16678 16679 16680 16681------------------------------------------ 16682Summary of changes for this label: 05_02_01 16683 16684Linux: 16685 16686/proc/acpi/event now blocks properly. 16687 16688Removed /proc/sys/acpi. You can still dump your DSDT from 16689/proc/acpi/dsdt. 16690 16691 ACPI CA Core Subsystem: 16692 16693Fixed a problem introduced in the previous label where some of the 16694"small" resource descriptor types were not recognized. 16695 16696Improved error messages for the case where an ASL Field is outside 16697the range of the parent operation region. 16698 16699 ASL Compiler, version X2018: 16700 16701 16702Added error detection for ASL Fields that extend beyond the length 16703of the parent operation region (only if the length of the region 16704is known at compile time.) This includes fields that have a 16705minimum access width that is smaller than the parent region, and 16706individual field units that are partially or entirely beyond the 16707extent of the parent. 16708 16709 16710 16711------------------------------------------ 16712Summary of changes for this label: 04_27_01 16713 16714 ACPI CA Core Subsystem: 16715 16716Fixed a problem where the namespace mutex could be released at the 16717wrong time during execution of AcpiRemoveAddressSpaceHandler. 16718 16719Added optional thread ID output for debug traces, to simplify 16720debugging of multiple threads. Added context switch notification 16721when the debug code realizes that a different thread is now 16722executing ACPI code. 16723 16724Some additional external data types have been prefixed with the 16725string "ACPI_" for consistency. This may effect existing code. 16726The data types affected are the external callback typedefs - e.g., 16727 16728WALK_CALLBACK becomes ACPI_WALK_CALLBACK. 16729 16730 Linux: 16731 16732Fixed an issue with the OSL semaphore implementation where a 16733thread was waking up with an error from receiving a SIGCHLD 16734signal. 16735 16736Linux version of ACPI CA now uses the system C library for string 16737manipulation routines instead of a local implementation. 16738 16739Cleaned up comments and removed TBDs. 16740 16741 ASL Compiler, version X2017: 16742 16743Enhanced error detection and reporting for all file I/O 16744operations. 16745 16746 Documentation: 16747 16748Programmer Reference updated to version 1.06. 16749 16750 16751 16752------------------------------------------ 16753Summary of changes for this label: 04_13_01 16754 16755 ACPI CA Core Subsystem: 16756 16757Restructured support for BufferFields and RegionFields. 16758BankFields support is now fully operational. All known 32-bit 16759limitations on field sizes have been removed. Both BufferFields 16760and (Operation) RegionFields are now supported by the same field 16761management code. 16762 16763Resource support now supports QWORD address and IO resources. The 1676416/32/64 bit address structures and the Extended IRQ structure 16765have been changed to properly handle Source Resource strings. 16766 16767A ThreadId of -1 is now used to indicate a "mutex not acquired" 16768condition internally and must never be returned by AcpiOsThreadId. 16769This reserved value was changed from 0 since Unix systems allow a 16770thread ID of 0. 16771 16772Linux: 16773 16774Driver code reorganized to enhance portability 16775 16776Added a kernel configuration option to control ACPI_DEBUG 16777 16778Fixed the EC driver to honor _GLK. 16779 16780ASL Compiler, version X2016: 16781 16782Fixed support for the "FixedHw" keyword. Previously, the FixedHw 16783address space was set to 0, not 0x7f as it should be. 16784 16785 ------------------------------------------ 16786Summary of changes for this label: 03_13_01 16787 16788 ACPI CA Core Subsystem: 16789 16790During ACPI initialization, the _SB_._INI method is now run if 16791present. 16792 16793Notify handler fix - notifies are deferred until the parent method 16794completes execution. This fixes the "mutex already acquired" 16795issue seen occasionally. 16796 16797Part of the "implicit conversion" rules in ACPI 2.0 have been 16798found to cause compatibility problems with existing ASL/AML. The 16799convert "result-to-target-type" implementation has been removed 16800for stores to method Args and Locals. Source operand conversion 16801is still fully implemented. Possible changes to ACPI 2.0 16802specification pending. 16803 16804Fix to AcpiRsCalculatePciRoutingTableLength to return correct 16805length. 16806 16807Fix for compiler warnings for 64-bit compiles. 16808 16809 Linux: 16810 16811/proc output aligned for easier parsing. 16812 16813Release-version compile problem fixed. 16814 16815New kernel configuration options documented in Configure.help. 16816 16817IBM 600E - Fixed Sleep button may generate "Invalid <NULL> 16818context" message. 16819 16820 OSPM: 16821 16822Power resource driver integrated with bus manager. 16823 16824Fixed kernel fault during active cooling for thermal zones. 16825 16826Source Code: 16827 16828The source code tree has been restructured. 16829 16830 16831 16832------------------------------------------ 16833Summary of changes for this label: 03_02_01 16834 16835 Linux OS Services Layer (OSL): 16836 16837Major revision of all Linux-specific code. 16838 16839Modularized all ACPI-specific drivers. 16840 16841Added new thermal zone and power resource drivers. 16842 16843Revamped /proc interface (new functionality is under /proc/acpi). 16844 16845New kernel configuration options. 16846 16847 Linux known issues: 16848 16849New kernel configuration options not documented in Configure.help 16850yet. 16851 16852 16853Module dependencies not currently implemented. If used, they 16854should be loaded in this order: busmgr, power, ec, system, 16855processor, battery, ac_adapter, button, thermal. 16856 16857Modules will not load if CONFIG_MODVERSION is set. 16858 16859IBM 600E - entering S5 may reboot instead of shutting down. 16860 16861IBM 600E - Sleep button may generate "Invalid <NULL> context" 16862message. 16863 16864Some systems may fail with "execution mutex already acquired" 16865message. 16866 16867 ACPI CA Core Subsystem: 16868 16869Added a new OSL Interface, AcpiOsGetThreadId. This was required 16870for the deadlock detection code. Defined to return a non-zero, 32- 16871bit thread ID for the currently executing thread. May be a non- 16872zero constant integer on single-thread systems. 16873 16874Implemented deadlock detection for internal subsystem mutexes. We 16875may add conditional compilation for this code (debug only) later. 16876 16877ASL/AML Mutex object semantics are now fully supported. This 16878includes multiple acquires/releases by owner and support for the 16879 16880Mutex SyncLevel parameter. 16881 16882A new "Force Release" mechanism automatically frees all ASL 16883Mutexes that have been acquired but not released when a thread 16884exits the interpreter. This forces conformance to the ACPI spec 16885("All mutexes must be released when an invocation exits") and 16886prevents deadlocked ASL threads. This mechanism can be expanded 16887(later) to monitor other resource acquisitions if OEM ASL code 16888continues to misbehave (which it will). 16889 16890Several new ACPI exception codes have been added for the Mutex 16891support. 16892 16893Recursive method calls are now allowed and supported (the ACPI 16894spec does in fact allow recursive method calls.) The number of 16895recursive calls is subject to the restrictions imposed by the 16896SERIALIZED method keyword and SyncLevel (ACPI 2.0) method 16897parameter. 16898 16899Implemented support for the SyncLevel parameter for control 16900methods (ACPI 2.0 feature) 16901 16902Fixed a deadlock problem when multiple threads attempted to use 16903the interpreter. 16904 16905Fixed a problem where the string length of a String package 16906element was not always set in a package returned from 16907AcpiEvaluateObject. 16908 16909Fixed a problem where the length of a String package element was 16910not always included in the length of the overall package returned 16911from AcpiEvaluateObject. 16912 16913Added external interfaces (Acpi*) to the ACPI debug memory 16914manager. This manager keeps a list of all outstanding 16915allocations, and can therefore detect memory leaks and attempts to 16916free memory blocks more than once. Useful for code such as the 16917power manager, etc. May not be appropriate for device drivers. 16918Performance with the debug code enabled is slow. 16919 16920The ACPI Global Lock is now an optional hardware element. 16921 16922 ASL Compiler Version X2015: 16923 16924Integrated changes to allow the compiler to be generated on 16925multiple platforms. 16926 16927Linux makefile added to generate the compiler on Linux 16928 16929 Source Code: 16930 16931All platform-specific headers have been moved to their own 16932subdirectory, Include/Platform. 16933 16934New source file added, Interpreter/ammutex.c 16935 16936New header file, Include/acstruct.h 16937 16938 Documentation: 16939 16940The programmer reference has been updated for the following new 16941interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree 16942 16943 ------------------------------------------ 16944Summary of changes for this label: 02_08_01 16945 16946Core ACPI CA Subsystem: Fixed a problem where an error was 16947incorrectly returned if the return resource buffer was larger than 16948the actual data (in the resource interfaces). 16949 16950References to named objects within packages are resolved to the 16951 16952full pathname string before packages are returned directly (via 16953the AcpiEvaluateObject interface) or indirectly via the resource 16954interfaces. 16955 16956Linux OS Services Layer (OSL): 16957 16958Improved /proc battery interface. 16959 16960 16961Added C-state debugging output and other miscellaneous fixes. 16962 16963ASL Compiler Version X2014: 16964 16965All defined method arguments can now be used as local variables, 16966including the ones that are not actually passed in as parameters. 16967The compiler tracks initialization of the arguments and issues an 16968exception if they are used without prior assignment (just like 16969locals). 16970 16971The -o option now specifies a filename prefix that is used for all 16972output files, including the AML output file. Otherwise, the 16973default behavior is as follows: 1) the AML goes to the file 16974specified in the DSDT. 2) all other output files use the input 16975source filename as the base. 16976 16977 ------------------------------------------ 16978Summary of changes for this label: 01_25_01 16979 16980Core ACPI CA Subsystem: Restructured the implementation of object 16981store support within the interpreter. This includes support for 16982the Store operator as well as any ASL operators that include a 16983target operand. 16984 16985Partially implemented support for Implicit Result-to-Target 16986conversion. This is when a result object is converted on the fly 16987to the type of an existing target object. Completion of this 16988support is pending further analysis of the ACPI specification 16989concerning this matter. 16990 16991CPU-specific code has been removed from the subsystem (hardware 16992directory). 16993 16994New Power Management Timer functions added 16995 16996Linux OS Services Layer (OSL): Moved system state transition code 16997to the core, fixed it, and modified Linux OSL accordingly. 16998 16999Fixed C2 and C3 latency calculations. 17000 17001 17002We no longer use the compilation date for the version message on 17003initialization, but retrieve the version from AcpiGetSystemInfo(). 17004 17005Incorporated for fix Sony VAIO machines. 17006 17007Documentation: The Programmer Reference has been updated and 17008reformatted. 17009 17010 17011ASL Compiler: Version X2013: Fixed a problem where the line 17012numbering and error reporting could get out of sync in the 17013presence of multiple include files. 17014 17015 ------------------------------------------ 17016Summary of changes for this label: 01_15_01 17017 17018Core ACPI CA Subsystem: 17019 17020Implemented support for type conversions in the execution of the 17021ASL Concatenate operator (The second operand is converted to 17022match the type of the first operand before concatenation.) 17023 17024Support for implicit source operand conversion is partially 17025implemented. The ASL source operand types Integer, Buffer, and 17026String are freely interchangeable for most ASL operators and are 17027converted by the interpreter on the fly as required. Implicit 17028Target operand conversion (where the result is converted to the 17029target type before storing) is not yet implemented. 17030 17031Support for 32-bit and 64-bit BCD integers is implemented. 17032 17033Problem fixed where a field read on an aligned field could cause a 17034read past the end of the field. 17035 17036New exception, AE_AML_NO_RETURN_VALUE, is returned when a method 17037does not return a value, but the caller expects one. (The ASL 17038compiler flags this as a warning.) 17039 17040ASL Compiler: 17041 17042Version X2011: 170431. Static typechecking of all operands is implemented. This 17044prevents the use of invalid objects (such as using a Package where 17045an Integer is required) at compile time instead of at interpreter 17046run-time. 170472. The ASL source line is printed with ALL errors and warnings. 170483. Bug fix for source EOF without final linefeed. 170494. Debug option is split into a parse trace and a namespace trace. 170505. Namespace output option (-n) includes initial values for 17051integers and strings. 170526. Parse-only option added for quick syntax checking. 170537. Compiler checks for duplicate ACPI name declarations 17054 17055Version X2012: 170561. Relaxed typechecking to allow interchangeability between 17057strings, integers, and buffers. These types are now converted by 17058the interpreter at runtime. 170592. Compiler reports time taken by each internal subsystem in the 17060debug output file. 17061 17062 17063 ------------------------------------------ 17064Summary of changes for this label: 12_14_00 17065 17066ASL Compiler: 17067 17068This is the first official release of the compiler. Since the 17069compiler requires elements of the Core Subsystem, this label 17070synchronizes everything. 17071 17072------------------------------------------ 17073Summary of changes for this label: 12_08_00 17074 17075 17076Fixed a problem where named references within the ASL definition 17077of both OperationRegions and CreateXXXFields did not work 17078properly. The symptom was an AE_AML_OPERAND_TYPE during 17079initialization of the region/field. This is similar (but not 17080related internally) to the problem that was fixed in the last 17081label. 17082 17083Implemented both 32-bit and 64-bit support for the BCD ASL 17084functions ToBCD and FromBCD. 17085 17086Updated all legal headers to include "2000" in the copyright 17087years. 17088 17089 ------------------------------------------ 17090Summary of changes for this label: 12_01_00 17091 17092Fixed a problem where method invocations within the ASL definition 17093of both OperationRegions and CreateXXXFields did not work 17094properly. The symptom was an AE_AML_OPERAND_TYPE during 17095initialization 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 17101Fixed a problem where operators with more than one nested 17102subexpression would fail. The symptoms were varied, by mostly 17103AE_AML_OPERAND_TYPE errors. This was actually a rather serious 17104problem that has gone unnoticed until now. 17105 17106 Subtract (Add (1,2), Multiply (3,4)) 17107 17108Fixed a problem where AcpiGetHandle didn't quite get fixed in the 17109previous build (The prefix part of a relative path was handled 17110incorrectly). 17111 17112Fixed a problem where Operation Region initialization failed if 17113the operation region name was a "namepath" instead of a simple 17114"nameseg". Symptom was an AE_NO_OPERAND error. 17115 17116Fixed a problem where an assignment to a local variable via the 17117indirect RefOf mechanism only worked for the first such 17118assignment. Subsequent assignments were ignored. 17119 17120 ------------------------------------------ 17121Summary of changes for this label: 11_15_00 17122 17123ACPI 2.0 table support with backwards support for ACPI 1.0 and the 171240.71 extensions. Note: although we can read ACPI 2.0 BIOS tables, 17125the AML interpreter does NOT have support for the new 2.0 ASL 17126grammar terms at this time. 17127 17128All ACPI hardware access is via the GAS structures in the ACPI 2.0 17129FADT. 17130 17131All physical memory addresses across all platforms are now 64 bits 17132wide. Logical address width remains dependent on the platform 17133(i.e., "void *"). 17134 17135AcpiOsMapMemory interface changed to a 64-bit physical address. 17136 17137The AML interpreter integer size is now 64 bits, as per the ACPI 171382.0 specification. 17139 17140For backwards compatibility with ACPI 1.0, ACPI tables with a 17141revision number less than 2 use 32-bit integers only. 17142 17143Fixed a problem where the evaluation of OpRegion operands did not 17144always resolve them to numbers properly. 17145 17146------------------------------------------ 17147Summary of changes for this label: 10_20_00 17148 17149Fix for CBN_._STA issue. This fix will allow correct access to 17150CBN_ OpRegions when the _STA returns 0x8. 17151 17152Support to convert ACPI constants (Ones, Zeros, One) to actual 17153values before a package object is returned 17154 17155Fix for method call as predicate to if/while construct causing 17156incorrect if/while behavior 17157 17158Fix for Else block package lengths sometimes calculated wrong (if 17159block > 63 bytes) 17160 17161Fix for Processor object length field, was always zero 17162 17163Table load abort if FACP sanity check fails 17164 17165Fix for problem with Scope(name) if name already exists 17166 17167Warning emitted if a named object referenced cannot be found 17168(resolved) during method execution. 17169 17170 17171 17172 17173 17174------------------------------------------ 17175Summary of changes for this label: 9_29_00 17176 17177New table initialization interfaces: AcpiInitializeSubsystem no 17178longer has any parameters AcpiFindRootPointer - Find the RSDP (if 17179necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP- 17180>RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by 17181AcpiLoadTables 17182 17183Note: These interface changes require changes to all existing OSDs 17184 17185The PCI_Config default address space handler is always installed 17186at the root namespace object. 17187 17188------------------------------------------- 17189Summary of changes for this label: 09_15_00 17190 17191The new initialization architecture is implemented. New 17192interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize) 17193AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace 17194 17195(Namespace is automatically loaded when a table is loaded) 17196 17197The ACPI_OPERAND_OBJECT has been optimized to shrink its size from 1719852 bytes to 32 bytes. There is usually one of these for every 17199namespace object, so the memory savings is significant. 17200 17201Implemented just-in-time evaluation of the CreateField operators. 17202 17203Bug fixes for IA-64 support have been integrated. 17204 17205Additional code review comments have been implemented 17206 17207The so-called "third pass parse" has been replaced by a final walk 17208through the namespace to initialize all operation regions (address 17209spaces) and fields that have not yet been initialized during the 17210execution of the various _INI and REG methods. 17211 17212New file - namespace/nsinit.c 17213 17214------------------------------------------- 17215Summary of changes for this label: 09_01_00 17216 17217Namespace manager data structures have been reworked to change the 17218primary object from a table to a single object. This has 17219resulted in dynamic memory savings of 3X within the namespace and 172202X overall in the ACPI CA subsystem. 17221 17222Fixed problem where the call to AcpiEvFindPciRootBuses was 17223inadvertently left commented out. 17224 17225Reduced the warning count when generating the source with the GCC 17226compiler. 17227 17228Revision numbers added to each module header showing the 17229SourceSafe version of the file. Please refer to this version 17230number when giving us feedback or comments on individual modules. 17231 17232The main object types within the subsystem have been renamed to 17233clarify their purpose: 17234 17235ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT 17236ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT 17237ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE 17238 17239NOTE: no changes to the initialization sequence are included in 17240this label. 17241 17242------------------------------------------- 17243Summary of changes for this label: 08_23_00 17244 17245Fixed problem where TerminateControlMethod was being called 17246multiple times per method 17247 17248Fixed debugger problem where single stepping caused a semaphore to 17249be oversignalled 17250 17251Improved performance through additional parse object caching - 17252added ACPI_EXTENDED_OP type 17253 17254------------------------------------------- 17255Summary of changes for this label: 08_10_00 17256 17257Parser/Interpreter integration: Eliminated the creation of 17258complete parse trees for ACPI tables and control methods. 17259Instead, parse subtrees are created and then deleted as soon as 17260they are processed (Either entered into the namespace or executed 17261by the interpreter). This reduces the use of dynamic kernel 17262memory significantly. (about 10X) 17263 17264Exception codes broken into classes and renumbered. Be sure to 17265recompile all code that includes acexcep.h. Hopefully we won't 17266have to renumber the codes again now that they are split into 17267classes (environment, programmer, AML code, ACPI table, and 17268internal). 17269 17270Fixed some additional alignment issues in the Resource Manager 17271subcomponent 17272 17273Implemented semaphore tracking in the AcpiExec utility, and fixed 17274several places where mutexes/semaphores were being unlocked 17275without a corresponding lock operation. There are no known 17276semaphore or mutex "leaks" at this time. 17277 17278Fixed the case where an ASL Return operator is used to return an 17279unnamed package. 17280 17281------------------------------------------- 17282Summary of changes for this label: 07_28_00 17283 17284Fixed a problem with the way addresses were calculated in 17285AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem 17286manifested itself when a Field was created with WordAccess or 17287DwordAccess, but the field unit defined within the Field was less 17288 17289than a Word or Dword. 17290 17291Fixed a problem in AmlDumpOperands() module's loop to pull 17292operands off of the operand stack to display information. The 17293problem manifested itself as a TLB error on 64-bit systems when 17294accessing an operand stack with two or more operands. 17295 17296Fixed a problem with the PCI configuration space handlers where 17297context was getting confused between accesses. This required a 17298change to the generic address space handler and address space 17299setup definitions. Handlers now get both a global handler context 17300(this is the one passed in by the user when executing 17301AcpiInstallAddressSpaceHandler() and a specific region context 17302that is unique to each region (For example, the _ADR, _SEG and 17303_BBN values associated with a specific region). The generic 17304function definitions have changed to the following: 17305 17306typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function, 17307UINT32 Address, UINT32 BitWidth, UINT32 *Value, void 17308*HandlerContext, // This used to be void *Context void 17309*RegionContext); // This is an additional parameter 17310 17311typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE 17312RegionHandle, UINT32 Function, void *HandlerContext, void 17313**RegionContext); // This used to be **ReturnContext 17314 17315------------------------------------------- 17316Summary of changes for this label: 07_21_00 17317 17318Major file consolidation and rename. All files within the 17319interpreter have been renamed as well as most header files. This 17320was done to prevent collisions with existing files in the host 17321OSs -- filenames such as "config.h" and "global.h" seem to be 17322quite common. The VC project files have been updated. All 17323makefiles will require modification. 17324 17325The parser/interpreter integration continues in Phase 5 with the 17326implementation of a complete 2-pass parse (the AML is parsed 17327twice) for each table; This avoids the construction of a huge 17328parse tree and therefore reduces the amount of dynamic memory 17329required by the subsystem. Greater use of the parse object cache 17330means that performance is unaffected. 17331 17332Many comments from the two code reviews have been rolled in. 17333 17334The 64-bit alignment support is complete. 17335 17336------------------------------------------- 17337Summary of changes for this label: 06_30_00 17338 17339With a nod and a tip of the hat to the technology of yesteryear, 17340we've added support in the source code for 80 column output 17341devices. The code is now mostly constrained to 80 columns or 17342less to support environments and editors that 1) cannot display 17343or print more than 80 characters on a single line, and 2) cannot 17344disable line wrapping. 17345 17346A major restructuring of the namespace data structure has been 17347completed. The result is 1) cleaner and more 17348understandable/maintainable code, and 2) a significant reduction 17349in the dynamic memory requirement for each named ACPI object 17350(almost half). 17351 17352------------------------------------------- 17353Summary of changes for this label: 06_23_00 17354 17355Linux support has been added. In order to obtain approval to get 17356the ACPI CA subsystem into the Linux kernel, we've had to make 17357quite a few changes to the base subsystem that will affect all 17358users (all the changes are generic and OS- independent). The 17359effects of these global changes have been somewhat far reaching. 17360Files have been merged and/or renamed and interfaces have been 17361renamed. The major changes are described below. 17362 17363Osd* interfaces renamed to AcpiOs* to eliminate namespace 17364pollution/confusion within our target kernels. All OSD 17365interfaces must be modified to match the new naming convention. 17366 17367Files merged across the subsystem. A number of the smaller source 17368and header files have been merged to reduce the file count and 17369increase the density of the existing files. There are too many 17370to list here. In general, makefiles that call out individual 17371files will require rebuilding. 17372 17373Interpreter files renamed. All interpreter files now have the 17374prefix am* instead of ie* and is*. 17375 17376Header files renamed: The acapi.h file is now acpixf.h. The 17377acpiosd.h file is now acpiosxf.h. We are removing references to 17378the acronym "API" since it is somewhat windowsy. The new name is 17379"external interface" or xface or xf in the filenames.j 17380 17381 17382All manifest constants have been forced to upper case (some were 17383mixed case.) Also, the string "ACPI_" has been prepended to many 17384(not all) of the constants, typedefs, and structs. 17385 17386The globals "DebugLevel" and "DebugLayer" have been renamed 17387"AcpiDbgLevel" and "AcpiDbgLayer" respectively. 17388 17389All other globals within the subsystem are now prefixed with 17390"AcpiGbl_" Internal procedures within the subsystem are now 17391prefixed with "Acpi" (with only a few exceptions). The original 17392two-letter abbreviation for the subcomponent remains after "Acpi" 17393- for example, CmCallocate became AcpiCmCallocate. 17394 17395Added a source code translation/conversion utility. Used to 17396generate the Linux source code, it can be modified to generate 17397other types of source as well. Can also be used to cleanup 17398existing source by removing extraneous spaces and blank lines. 17399Found in tools/acpisrc/* 17400 17401OsdUnMapMemory was renamed to OsdUnmapMemory and then 17402AcpiOsUnmapMemory. (UnMap became Unmap). 17403 17404A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore. 17405When set to one, this indicates that the caller wants to use the 17406 17407semaphore as a mutex, not a counting semaphore. ACPI CA uses 17408both types. However, implementers of this call may want to use 17409different OS primitives depending on the type of semaphore 17410requested. For example, some operating systems provide separate 17411 17412"mutex" and "semaphore" interfaces - where the mutex interface is 17413much faster because it doesn't have all the overhead of a full 17414semaphore implementation. 17415 17416Fixed a deadlock problem where a method that accesses the PCI 17417address space can block forever if it is the first access to the 17418space. 17419 17420------------------------------------------- 17421Summary of changes for this label: 06_02_00 17422 17423Support for environments that cannot handle unaligned data 17424accesses (e.g. firmware and OS environments devoid of alignment 17425handler technology namely SAL/EFI and the IA-64 Linux kernel) has 17426been added (via configurable macros) in these three areas: - 17427Transfer of data from the raw AML byte stream is done via byte 17428moves instead of word/dword/qword moves. - External objects are 17429aligned within the user buffer, including package elements (sub- 17430objects). - Conversion of name strings to UINT32 Acpi Names is now 17431done byte-wise. 17432 17433The Store operator was modified to mimic Microsoft's 17434implementation when storing to a Buffer Field. 17435 17436Added a check of the BM_STS bit before entering C3. 17437 17438The methods subdirectory has been obsoleted and removed. A new 17439file, cmeval.c subsumes the functionality. 17440 17441A 16-bit (DOS) version of AcpiExec has been developed. The 17442makefile is under the acpiexec directory. 17443