1---------------------------------------- 222 December 2016. Summary of changes for version 20161222: 3 4 51) ACPICA kernel-resident subsystem: 6 7AML Debugger: Implemented a new mechanism to simplify and enhance 8debugger integration into all environments, including kernel debuggers 9and user-space utilities, as well as remote debug services. This 10mechanism essentially consists of new OSL interfaces to support debugger 11initialization/termination, as well as wait/notify interfaces to perform 12the debugger handshake with the host. Lv Zheng. 13 14 New OSL interfaces: 15 AcpiOsInitializeDebugger (void) 16 AcpiOsTerminateDebugger (void) 17 AcpiOsWaitCommandReady (void) 18 AcpiOsNotifyCommandComplete (void) 19 20 New OS services layer: 21 osgendbg.c -- Example implementation, and used for AcpiExec 22 23Update for Generic Address Space (GAS) support: Although the AccessWidth 24and/or BitOffset fields of the GAS are not often used, this change now 25fully supports these fields. This affects the internal support for FADT 26registers, registers in other ACPI data tables, and the AcpiRead and 27AcpiWrite public interfaces. Lv Zheng. 28 29Sleep support: In order to simplify integration of ACPI sleep for the 30various host operating systems, a new OSL interface has been introduced. 31AcpiOsEnterSleep allows the host to perform any required operations 32before the final write to the sleep control register(s) is performed by 33ACPICA. Lv Zheng. 34 35 New OSL interface: 36 AcpiOsEnterSleep(SleepState, RegisterAValue, RegisterBValue) 37 38 Called from these internal interfaces: 39 AcpiHwLegacySleep 40 AcpiHwExtendedSleep 41 42EFI support: Added a very small EFI/ACPICA example application. Provides 43a simple demo for EFI integration, as well as assisting with resolution 44of issues related to customer ACPICA/EFI integration. Lv Zheng. See: 45 46 source/tools/efihello/efihello.c 47 48Local C library: Implemented several new functions to enhance ACPICA 49portability, for environments where these clib functions are not 50available (such as EFI). Lv Zheng: 51 putchar 52 getchar 53 strpbrk 54 strtok 55 memmove 56 57Fixed a regression where occasionally a valid resource descriptor was 58incorrectly detected as invalid at runtime, and a 59AE_AML_NO_RESOURCE_END_TAG was returned. 60 61Fixed a problem with the recently implemented support that enables 62control method invocations as Target operands to many ASL operators. 63Warnings of this form: "Needed type [Reference], found [Processor]" were 64seen at runtime for some method invocations. 65 66Example Code and Data Size: These are the sizes for the OS-independent 67acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 68debug version of the code includes the debug output trace mechanism and 69has a much larger code and data size. 70 71 Current Release: 72 Non-Debug Version: 141.5K Code, 58.5K Data, 200.0K Total 73 Debug Version: 201.7K Code, 82.7K Data, 284.4K Total 74 Previous Release: 75 Non-Debug Version: 140.5K Code, 58.5K Data, 198.9K Total 76 Debug Version: 201.3K Code, 82.7K Data, 284.0K Total 77 78 792) iASL Compiler/Disassembler and Tools: 80 81Disassembler: Enhanced output by adding the capability to detect and 82disassemble ASL Switch/Case statements back to the original ASL source 83code instead of if/else blocks. David Box. 84 85AcpiHelp: Split a large file into separate files based upon 86functionality/purpose. New files are: 87 ahaml.c 88 ahasl.c 89 90---------------------------------------- 9117 November 2016. Summary of changes for version 20161117: 92 93 941) ACPICA kernel-resident subsystem: 95 96Table Manager: Fixed a regression introduced in 20160729, "FADT support 97cleanup". This was an attempt to remove all references in the source to 98the FADT version 2, which never was a legal version number. It was 99skipped because it was an early version of 64-bit support that was 100eventually abandoned for the current 64-bit support. 101 102Interpreter: Fixed a problem where runtime implicit conversion was 103incorrectly disabled for the ASL operators below. This brings the 104behavior into compliance with the ACPI specification: 105 FromBCD 106 ToBCD 107 ToDecimalString 108 ToHexString 109 ToInteger 110 ToBuffer 111 112Table Manager: Added a new public interface, AcpiPutTable, used to 113release and free an ACPI table returned by AcpiGetTable and related 114interfaces. Lv Zheng. 115 116Example Code and Data Size: These are the sizes for the OS-independent 117acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 118debug version of the code includes the debug output trace mechanism and 119has a much larger code and data size. 120 121 Current Release: 122 Non-Debug Version: 140.5K Code, 58.5K Data, 198.9K Total 123 Debug Version: 201.3K Code, 82.7K Data, 284.0K Total 124 Previous Release: 125 Non-Debug Version: 140.4K Code, 58.1K Data, 198.5K Total 126 Debug Version: 200.7K Code, 82.1K Data, 282.8K Total 127 128 1292) iASL Compiler/Disassembler and Tools: 130 131Disassembler: Fixed a regression for disassembly of Resource Template. 132Detection of templates in the AML stream missed some types of templates. 133 134iASL: Fixed a problem where an Access Size error was returned for the PCC 135address space when the AccessSize of the GAS register is greater than a 136DWORD. Hoan Tran. 137 138iASL: Implemented several grammar changes for the operators below. These 139changes are slated for the next version of the ACPI specification: 140 RefOf - Disallow method invocation as an operand 141 CondRefOf - Disallow method invocation as an operand 142 DerefOf - Disallow operands that use the result from operators 143that 144 do not return a reference (Changed TermArg to 145SuperName). 146 147iASL: Control method invocations are now allowed for Target operands, as 148per the ACPI specification. Removed error for using a control method 149invocation as a Target operand. 150 151Disassembler: Improved detection of Resource Templates, Unicode, and 152Strings within Buffer objects. These subtypes do not contain a specific 153opcode to indicate the originating ASL code, and they must be detected by 154other means within the disassembler. 155 156iASL: Implemented an optimization improvement for 32-bit ACPI tables 157(DSDT/SSDT). For the 32-bit case only, compute the optimum integer opcode 158only after 64-bit to 32-bit truncation. A truncation warning message is 159still emitted, however. 160 161AcpiXtract: Implemented handling for both types of line terminators (LF 162or CR/LF) so that it can accept AcpiDump output files from any system. 163Peter Wu. 164 165AcpiBin: Added two new options for comparing AML files: 166 -a: compare and display ALL mismatches 167 -o: start compare at this offset into the second file 168 169---------------------------------------- 17030 September 2016. Summary of changes for version 20160930: 171 172 1731) ACPICA kernel-resident subsystem: 174 175Fixed a regression in the internal AcpiTbFindTable function where a non 176AE_OK exception could inadvertently be returned even if the function did 177not fail. This problem affects the following operators: 178 DataTableRegion 179 LoadTable 180 181Fixed a regression in the LoadTable operator where a load to any 182namespace location other than the root no longer worked properly. 183 184Increased the maximum loop count value that will result in the 185AE_AML_INFINITE_LOOP exception. This is a mechanism that is intended to 186prevent infinite loops within the AML interpreter and thus the host OS 187kernel. The value is increased from 0xFFFF to 0xFFFFF loops (65,535 to 1881,048,575). 189 190Moved the AcpiGbl_MaxLoopIterations configuration variable to the public 191acpixf.h file. This allows hosts to easily configure the maximum loop 192count at runtime. 193 194Removed an illegal character in the strtoul64.c file. This character 195caused errors with some C compilers. 196 197Example Code and Data Size: These are the sizes for the OS-independent 198acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 199debug version of the code includes the debug output trace mechanism and 200has a much larger code and data size. 201 202 Current Release: 203 Non-Debug Version: 140.4K Code, 58.1K Data, 198.5K Total 204 Debug Version: 200.7K Code, 82.1K Data, 282.8K Total 205 Previous Release: 206 Non-Debug Version: 140.0K Code, 58.1K Data, 198.1K Total 207 Debug Version: 200.3K Code, 82.1K Data, 282.4K Total 208 209 2102) iASL Compiler/Disassembler and Tools: 211 212Disassembler: Fixed a problem with the conversion of Else{If{ blocks into 213the simpler ASL ElseIf keyword. During the conversion, a trailing If 214block could be lost and missing from the disassembled output. 215 216iASL: Fixed a missing parser rule for the ObjectType operator. For ASL+, 217the missing rule caused a parse error when using the Index operator as an 218operand to ObjectType. This construct now compiles properly. Example: 219 ObjectType(PKG1[4]). 220 221iASL: Correctly handle unresolved symbols in the hardware map file (-lm 222option). Previously, unresolved symbols could cause a protection fault. 223Such symbols are now marked as unresolved in the map file. 224 225iASL: Implemented support to allow control method invocations as an 226operand to the ASL DeRefOf operator. Example: 227 DeRefOf(MTH1(Local0)) 228 229Disassembler: Improved support for the ToPLD ASL macro. Detection of a 230possible _PLD buffer now includes examination of both the normal buffer 231length (16 or 20) as well as the surrounding AML package length. 232 233Disassembler: Fixed a problem with the decoding of complex expressions 234within the Divide operator for ASL+. For the case where both the quotient 235and remainder targets are specified, the entire statement cannot be 236disassembled. Previously, the output incorrectly contained a mix of ASL- 237and ASL+ operators. This mixed statement causes a syntax error when 238compiled. Example: 239 Divide (Add (INT1, 6), 128, RSLT, QUOT) // was incorrectly 240disassembled to: 241 Divide (INT1 + 6, 128, RSLT, QUOT) 242 243iASL/Tools: Added support to process AML and non-AML ACPI tables 244consistently. For the disassembler and AcpiExec, allow all types of ACPI 245tables (AML and data tables). For the iASL -e option, allow only AML 246tables (DSDT/SSDT). 247 248---------------------------------------- 24931 August 2016. Summary of changes for version 20160831: 250 251 2521) ACPICA kernel-resident subsystem: 253 254Improve support for the so-called "module-level code", which is defined 255to be math, logical and control AML opcodes that appear outside of any 256control method. This change improves the support by adding more opcodes 257that can be executed in the manner. Some other issues have been solved, 258and the ASL grammar changes to support such code under all scope 259operators (Device, etc.) are complete. Lv Zheng. 260 261UEFI support: these OSL functions have been implemented. This is an 262additional step toward supporting the AcpiExec utility natively (with 263full hardware access) under UEFI. Marcelo Ferreira. 264 AcpiOsReadPciConfiguration 265 AcpiOsWritePciConfiguration 266 267Fixed a possible mutex error during control method auto-serialization. Lv 268Zheng. 269 270Updated support for the Generic Address Structure by fully implementing 271all GAS fields when a 32-bit address is expanded to a 64-bit GAS. Lv 272Zheng. 273 274Updated the return value for the internal _OSI method. Instead of 2750xFFFFFFFF, the "Ones" value is now returned, which is 0xFFFFFFFFFFFFFFFF 276for 64-bit ACPI tables. This fixes an incompatibility with other ACPI 277implementations, and will be reflected and clarified in the next version 278of the ACPI specification. 279 280Implemented two new table events that can be passed to an ACPICA table 281handler. These events are used to indicate a table installation or 282uninstallation. These events are used in addition to existed table load 283and unload events. Lv Zheng. 284 285Implemented a cleanup for all internal string-to-integer conversions. 286Consolidate multiple versions of this functionality and limit possible 287bases to either 10 or 16 to simplify the code. Adds a new file, 288utstrtoul64. 289 290Cleanup the inclusion order of the various compiler-specific headers. 291This simplifies build configuration management. The compiler-specific 292headers are now split out from the host-specific headers. Lv Zheng. 293 294Example Code and Data Size: These are the sizes for the OS-independent 295acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 296debug version of the code includes the debug output trace mechanism and 297has a much larger code and data size. 298 299 Current Release: 300 Non-Debug Version: 140.1K Code, 58.1K Data, 198.1K Total 301 Debug Version: 200.3K Code, 82.1K Data, 282.4K Total 302 303 3042) iASL Compiler/Disassembler and Tools: 305 306iASL/AcpiExec: Added a command line option to display the build date/time 307of the tool (-vd). This can be useful to verify that the correct version 308of the tools are being used. 309 310AML Debugger: Implemented a new subcommand ("execute predef") to execute 311all predefined control methods and names within the current namespace. 312This can be useful for debugging problems with ACPI tables and the ACPI 313namespace. 314 315---------------------------------------- 31629 July 2016. Summary of changes for version 20160729: 317 318 3191) ACPICA kernel-resident subsystem: 320 321Implemented basic UEFI support for the various ACPICA tools. This 322includes: 3231) An OSL to implement the various AcpiOs* interfaces on UEFI. 3242) Support to obtain the ACPI tables on UEFI. 3253) Local implementation of required C library functions not available on 326UEFI. 3274) A front-end (main) function for the tools for UEFI-related 328initialization. 329 330The initial deployment of this support is the AcpiDump utility executing 331as an UEFI application via EDK2 (EDKII, "UEFI Firmware Development Kit"). 332Current environments supported are Linux/Unix. MSVC generation is not 333supported at this time. See the generate/efi/README file for build 334instructions. Lv Zheng. 335 336Future plans include porting the AcpiExec utility to execute natively on 337the platform with I/O and memory access. This will allow viewing/dump of 338the platform namespace and native execution of ACPI control methods that 339access the actual hardware. To fully implement this support, the OSL 340functions below must be implemented with UEFI interfaces. Any community 341help in the implementation of these functions would be appreciated: 342 AcpiOsReadPort 343 AcpiOsWritePort 344 AcpiOsReadMemory 345 AcpiOsWriteMemory 346 AcpiOsReadPciConfiguration 347 AcpiOsWritePciConfiguration 348 349Restructured and standardized the C library configuration for ACPICA, 350resulting in the various configuration options below. This includes a 351global restructuring of the compiler-dependent and platform-dependent 352include files. These changes may affect the existing platform-dependent 353configuration files on some hosts. Lv Zheng. 354 355The current C library configuration options appear below. For any issues, 356it may be helpful to examine the existing compiler-dependent and 357platform-dependent files as examples. Lv Zheng. 358 3591) Linux kernel: 360 ACPI_USE_STANDARD_HEADERS=n in order not to use system-provided C 361library. 362 ACPI_USE_SYSTEM_CLIBRARY=y in order not to use ACPICA mini C library. 3632) Unix/Windows/BSD applications: 364 ACPI_USE_STANDARD_HEADERS=y in order to use system-provided C 365library. 366 ACPI_USE_SYSTEM_CLIBRARY=y in order not to use ACPICA mini C library. 3673) UEFI applications: 368 ACPI_USE_STANDARD_HEADERS=n in order not to use system-provided C 369library. 370 ACPI_USE_SYSTEM_CLIBRARY=n in order to use ACPICA mini C library. 3714) UEFI applications (EDK2/StdLib): 372 ACPI_USE_STANDARD_HEADERS=y in order to use EDK2 StdLib C library. 373 ACPI_USE_SYSTEM_CLIBRARY=y in order to use EDK2 StdLib C library. 374 375 376AML interpreter: "module-level code" support. Allows for execution of so- 377called "executable" AML code (math/logical operations, etc.) outside of 378control methods not just at the module level (top level) but also within 379any scope declared outside of a control method - Scope{}, Device{}, 380Processor{}, PowerResource{}, and ThermalZone{}. Lv Zheng. 381 382Simplified the configuration of the "maximum AML loops" global option by 383adding a global public variable, "AcpiGbl_MaxLoopIterations" which can be 384modified at runtime. 385 386 387Example Code and Data Size: These are the sizes for the OS-independent 388acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 389debug version of the code includes the debug output trace mechanism and 390has a much larger code and data size. 391 392 Current Release: 393 Non-Debug Version: 139.1K Code, 22.9K Data, 162.0K Total 394 Debug Version: 199.0K Code, 81.8K Data, 280.8K Total 395 396 3972) iASL Compiler/Disassembler and Tools: 398 399iASL: Add full support for the RASF ACPI table (RAS Features Table). 400Includes disassembler, data table compiler, and header support. 401 402iASL Expand "module-level code" support. Allows for 403compilation/disassembly of so-called "executable" AML code (math/logical 404operations, etc.) outside of control methods not just at the module level 405(top level) but also within any scope declared outside of a control 406method - Scope{}, Device{}, Processor{}, PowerResource{}, and 407ThermalZone{}. 408 409AcpiDump: Added support for dumping all SSDTs on newer versions of 410Windows. These tables are now easily available -- SSDTs are not available 411through the registry on older versions. 412 413---------------------------------------- 41427 May 2016. Summary of changes for version 20160527: 415 416 4171) ACPICA kernel-resident subsystem: 418 419Temporarily reverted the new arbitrary bit length/alignment support in 420AcpiHwRead/AcpiHwWrite for the Generic Address Structure. There have been 421a number of regressions with the new code that need to be fully resolved 422and tested before this support can be finally integrated into ACPICA. 423Apologies for any inconveniences these issues may have caused. 424 425The ACPI message macros are not configurable (ACPI_MSG_ERROR, 426ACPI_MSG_EXCEPTION, ACPI_MSG_WARNING, ACPI_MSG_INFO, ACPI_MSG_BIOS_ERROR, 427and ACPI_MSG_BIOS_WARNING). Lv Zheng. 428 429Fixed a couple of GCC warnings associated with the use of the -Wcast-qual 430option. Adds a new return macro, return_STR. Junk-uk Kim. 431 432Example Code and Data Size: These are the sizes for the OS-independent 433acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 434debug version of the code includes the debug output trace mechanism and 435has a much larger code and data size. 436 437 Current Release: 438 Non-Debug Version: 136.8K Code, 51.6K Data, 188.4K Total 439 Debug Version: 201.5K Code, 82.2K Data, 283.7K Total 440 Previous Release: 441 Non-Debug Version: 137.4K Code, 52.6K Data, 190.0K Total 442 Debug Version: 200.9K Code, 82.2K Data, 283.1K Total 443 444---------------------------------------- 44522 April 2016. Summary of changes for version 20160422: 446 4471) ACPICA kernel-resident subsystem: 448 449Fixed a regression in the GAS (generic address structure) arbitrary bit 450support in AcpiHwRead/AcpiHwWrite. Problem could cause incorrect behavior 451and incorrect return values. Lv Zheng. ACPICA BZ 1270. 452 453ACPI 6.0: Added support for new/renamed resource macros. One new argument 454was added to each of these macros, and the original name has been 455deprecated. The AML disassembler will always disassemble to the new 456names. Support for the new macros was added to iASL, disassembler, 457resource manager, and the acpihelp utility. ACPICA BZ 1274. 458 459 I2cSerialBus -> I2cSerialBusV2 460 SpiSerialBus -> SpiSerialBusV2 461 UartSerialBus -> UartSerialBusV2 462 463ACPI 6.0: Added support for a new integer field that was appended to the 464package object returned by the _BIX method. This adds iASL compile-time 465and AML runtime error checking. ACPICA BZ 1273. 466 467ACPI 6.1: Added support for a new PCCT subtable, "HW-Reduced Comm 468Subspace Type2" (Headers, Disassembler, and data table compiler). 469 470Example Code and Data Size: These are the sizes for the OS-independent 471acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 472debug version of the code includes the debug output trace mechanism and 473has a much larger code and data size. 474 475 Current Release: 476 Non-Debug Version: 137.4K Code, 52.6K Data, 190.0K Total 477 Debug Version: 201.5K Code, 82.2K Data, 283.7K Total 478 Previous Release: 479 Non-Debug Version: 137.1K Code, 51.5K Data, 188.6K Total 480 Debug Version: 201.0K Code, 82.0K Data, 283.0K Total 481 482 4832) iASL Compiler/Disassembler and Tools: 484 485iASL: Implemented an ASL grammar extension to allow/enable executable 486"module-level code" to be created and executed under the various 487operators that create new scopes. This type of AML code is already 488supported in all known AML interpreters, and the grammar change will 489appear in the next version of the ACPI specification. Simplifies the 490conditional runtime creation of named objects under these object types: 491 492 Device 493 PowerResource 494 Processor 495 Scope 496 ThermalZone 497 498iASL: Implemented a new ASL extension, a "For" loop macro to add greater 499ease-of-use to the ASL language. The syntax is similar to the 500corresponding C operator, and is implemented with the existing AML While 501opcode -- thus requiring no changes to existing AML interpreters. 502 503 For (Initialize, Predicate, Update) {TermList} 504 505Grammar: 506 ForTerm := 507 For ( 508 Initializer // Nothing | TermArg => ComputationalData 509 Predicate // Nothing | TermArg => ComputationalData 510 Update // Nothing | TermArg => ComputationalData 511 ) {TermList} 512 513 514iASL: The _HID/_ADR detection and validation has been enhanced to search 515under conditionals in order to allow these objects to be conditionally 516created at runtime. 517 518iASL: Fixed several issues with the constant folding feature. The 519improvement allows better detection and resolution of statements that can 520be folded at compile time. ACPICA BZ 1266. 521 522iASL/Disassembler: Fixed a couple issues with the Else{If{}...} 523conversion to the ASL ElseIf operator where incorrect ASL code could be 524generated. 525 526iASL/Disassembler: Fixed a problem with the ASL+ code disassembly where 527sometimes an extra (and extraneous) set of parentheses were emitted for 528some combinations of operators. Although this did not cause any problems 529with recompilation of the disassembled code, it made the code more 530difficult to read. David Box. ACPICA BZ 1231. 531 532iASL: Changed to ignore the unreferenced detection for predefined names 533of resource descriptor elements, when the resource descriptor is 534created/defined within a control method. 535 536iASL: Disassembler: Fix a possible fault with externally declared Buffer 537objects. 538 539---------------------------------------- 54018 March 2016. Summary of changes for version 20160318: 541 5421) ACPICA kernel-resident subsystem: 543 544Added support for arbitrary bit lengths and bit offsets for registers 545defined by the Generic Address Structure. Previously, only aligned bit 546lengths of 8/16/32/64 were supported. This was sufficient for many years, 547but recently some machines have been seen that require arbitrary bit- 548level support. ACPICA BZ 1240. Lv Zheng. 549 550Fixed an issue where the \_SB._INI method sometimes must be evaluated 551before any _REG methods are evaluated. Lv Zheng. 552 553Implemented several changes related to ACPI table support 554(Headers/Disassembler/TableCompiler): 555NFIT: For ACPI 6.1, updated to add some additional new fields and 556constants. 557FADT: Updated a warning message and set compliance to ACPI 6.1 (Version 5586). 559DMAR: Added new constants per the 10/2014 DMAR spec. 560IORT: Added new subtable per the 10/2015 IORT spec. 561HEST: For ACPI 6.1, added new constants and new subtable. 562DBG2: Added new constants per the 12/2015 DBG2 spec. 563FPDT: Fixed several incorrect fields, add the FPDT boot record structure. 564ACPICA BZ 1249. 565ERST/EINJ: Updated disassembler with new "Execute Timings" actions. 566 567Updated header support for the DMAR table to match the current version of 568the related spec. 569 570Added extensions to the ASL Concatenate operator to allow any ACPI object 571to be passed as an operand. Any object other than Integer/String/Buffer 572simply returns a string containing the object type. This extends the 573usefulness of the Printf macros. Previously, Concatenate would abort the 574control method if a non-data object was encountered. 575 576ACPICA source code: Deployed the C "const" keyword across the source code 577where appropriate. ACPICA BZ 732. Joerg Sonnenberger (NetBSD). 578 579Example Code and Data Size: These are the sizes for the OS-independent 580acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 581debug version of the code includes the debug output trace mechanism and 582has a much larger code and data size. 583 584 Current Release: 585 Non-Debug Version: 137.1K Code, 51.5K Data, 188.6K Total 586 Debug Version: 201.0K Code, 82.0K Data, 283.0K Total 587 Previous Release: 588 Non-Debug Version: 136.2K Code, 51.5K Data, 187.7K Total 589 Debug Version: 200.4K Code, 82.0K Data, 282.4K Total 590 591 5922) iASL Compiler/Disassembler and Tools: 593 594iASL/Disassembler: Improved the heuristic used to determine the number of 595arguments for an externally defined control method (a method in another 596table). Although this is an improvement, there is no deterministic way to 597"guess" the number of method arguments. Only the ACPI 6.0 External opcode 598will completely solve this problem as it is deployed (automatically) in 599newer BIOS code. 600 601iASL/Disassembler: Fixed an ordering issue for emitted External() ASL 602statements that could cause errors when the disassembled file is 603compiled. ACPICA BZ 1243. David Box. 604 605iASL: Fixed a regression caused by the merger of the two versions of the 606local strtoul64. Because of a dependency on a global variable, strtoul64 607could return an error for integers greater than a 32-bit value. ACPICA BZ 6081260. 609 610iASL: Fixed a regression where a fault could occur for an ASL Return 611statement if it invokes a control method that is not resolved. ACPICA BZ 6121264. 613 614AcpiXtract: Improved input file validation: detection of binary files and 615non-acpidump text files. 616 617---------------------------------------- 61812 February 2016. Summary of changes for version 20160212: 619 6201) ACPICA kernel-resident subsystem: 621 622Implemented full support for the ACPI 6.1 specification (released in 623January). This version of the specification is available at: 624http://www.uefi.org/specifications 625 626Only a relatively small number of changes were required in ACPICA to 627support ACPI 6.1, in these areas: 628- New predefined names 629- New _HID values 630- A new subtable for HEST 631- A few other header changes for new values 632 633Ensure \_SB_._INI is executed before any _REG methods are executed. There 634appears to be existing BIOS code that relies on this behavior. Lv Zheng. 635 636Reverted a change made in version 20151218 which enabled method 637invocations to be targets of various ASL operators (SuperName and Target 638grammar elements). While the new behavior is supported by the ACPI 639specification, other AML interpreters do not support this behavior and 640never will. The ACPI specification will be updated for ACPI 6.2 to remove 641this support. Therefore, the change was reverted to the original ACPICA 642behavior. 643 644ACPICA now supports the GCC 6 compiler. 645 646Current Release: (Note: build changes increased sizes) 647 Non-Debug Version: 136.2K Code, 51.5K Data, 187.7K Total 648 Debug Version: 200.4K Code, 82.0K Data, 282.4K Total 649Previous Release: 650 Non-Debug Version: 102.7K Code, 28.4K Data, 131.1K Total 651 Debug Version: 200.4K Code, 81.9K Data, 282.3K Total 652 653 6542) iASL Compiler/Disassembler and Tools: 655 656Completed full support for the ACPI 6.0 External() AML opcode. The 657compiler emits an external AML opcode for each ASL External statement. 658This opcode is used by the disassembler to assist with the disassembly of 659external control methods by specifying the required number of arguments 660for the method. AML interpreters do not use this opcode. To ensure that 661interpreters do not even see the opcode, a block of one or more external 662opcodes is surrounded by an "If(0)" construct. As this feature becomes 663commonly deployed in BIOS code, the ability of disassemblers to correctly 664disassemble AML code will be greatly improved. David Box. 665 666iASL: Implemented support for an optional cross-reference output file. 667The -lx option will create a the cross-reference file with the suffix 668"xrf". Three different types of cross-reference are created in this file: 669- List of object references made from within each control method 670- Invocation (caller) list for each user-defined control method 671- List of references to each non-method object in the namespace 672 673iASL: Method invocations as ASL Target operands are now disallowed and 674flagged as errors in preparation for ACPI 6.2 (see the description of the 675problem above). 676 677---------------------------------------- 6788 January 2016. Summary of changes for version 20160108: 679 6801) ACPICA kernel-resident subsystem: 681 682Updated all ACPICA copyrights and signons to 2016: Added the 2016 683copyright to all source code module headers and utility/tool signons. 684This includes the standard Linux dual-license header. This affects 685virtually every file in the ACPICA core subsystem, iASL compiler, all 686ACPICA utilities, and the ACPICA test suite. 687 688Fixed a regression introduced in version 20151218 concerning the 689execution of so-called module-level ASL/AML code. Namespace objects 690created under a module-level If() construct were not properly/fully 691entered into the namespace and could cause an interpreter fault when 692accessed. 693 694Example Code and Data Size: These are the sizes for the OS-independent 695acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 696debug version of the code includes the debug output trace mechanism and 697has a much larger code and data size. 698 699Current Release: 700 Non-Debug Version: 102.7K Code, 28.4K Data, 131.1K Total 701 Debug Version: 200.4K Code, 81.9K Data, 282.4K Total 702 Previous Release: 703 Non-Debug Version: 102.6K Code, 28.4K Data, 131.0K Total 704 Debug Version: 200.3K Code, 81.9K Data, 282.3K Total 705 706 7072) iASL Compiler/Disassembler and Tools: 708 709Fixed a problem with the compilation of the GpioIo and GpioInt resource 710descriptors. The _PIN field name was incorrectly defined to be an array 711of 32-bit values, but the _PIN values are in fact 16 bits each. This 712would cause incorrect bit width warnings when using Word (16-bit) fields 713to access the descriptors. 714 715 716---------------------------------------- 71718 December 2015. Summary of changes for version 20151218: 718 7191) ACPICA kernel-resident subsystem: 720 721Implemented per-AML-table execution of "module-level code" as individual 722ACPI tables are loaded into the namespace during ACPICA initialization. 723In other words, any module-level code within an AML table is executed 724immediately after the table is loaded, instead of batched and executed 725after all of the tables have been loaded. This provides compatibility 726with other ACPI implementations. ACPICA BZ 1219. Bob Moore, Lv Zheng, 727David Box. 728 729To fully support the feature above, the default operation region handlers 730for the SystemMemory, SystemIO, and PCI_Config address spaces are now 731installed before any ACPI tables are loaded. This enables module-level 732code to access these address spaces during the table load and module- 733level code execution phase. ACPICA BZ 1220. Bob Moore, Lv Zheng, David 734Box. 735 736Implemented several changes to the internal _REG support in conjunction 737with the changes above. Also, changes to the AcpiExec/AcpiNames/Examples 738utilities for the changes above. Although these tools were changed, host 739operating systems that simply use the default handlers for SystemMemory, 740SystemIO, and PCI_Config spaces should not require any update. Lv Zheng. 741 742For example, in the code below, DEV1 is conditionally added to the 743namespace by the DSDT via module-level code that accesses an operation 744region. The SSDT references DEV1 via the Scope operator. DEV1 must be 745created immediately after the DSDT is loaded in order for the SSDT to 746successfully reference DEV1. Previously, this code would cause an 747AE_NOT_EXIST exception during the load of the SSDT. Now, this code is 748fully supported by ACPICA. 749 750 DefinitionBlock ("", "DSDT", 2, "Intel", "DSDT1", 1) 751 { 752 OperationRegion (OPR1, SystemMemory, 0x400, 32) 753 Field (OPR1, AnyAcc, NoLock, Preserve) 754 { 755 FLD1, 1 756 } 757 If (FLD1) 758 { 759 Device (\DEV1) 760 { 761 } 762 } 763 } 764 DefinitionBlock ("", "SSDT", 2, "Intel", "SSDT1", 1) 765 { 766 External (\DEV1, DeviceObj) 767 Scope (\DEV1) 768 { 769 } 770 } 771 772Fixed an AML interpreter problem where control method invocations were 773not handled correctly when the invocation was itself a SuperName argument 774to another ASL operator. In these cases, the method was not invoked. 775ACPICA BZ 1002. Affects the following ASL operators that have a SuperName 776argument: 777 Store 778 Acquire, Wait 779 CondRefOf, RefOf 780 Decrement, Increment 781 Load, Unload 782 Notify 783 Signal, Release, Reset 784 SizeOf 785 786Implemented automatic String-to-ObjectReference conversion support for 787packages returned by predefined names (such as _DEP). A common BIOS error 788is to add double quotes around an ObjectReference namepath, which turns 789the reference into an unexpected string object. This support detects the 790problem and corrects it before the package is returned to the caller that 791invoked the method. Lv Zheng. 792 793Implemented extensions to the Concatenate operator. Concatenate now 794accepts any type of object, it is not restricted to simply 795Integer/String/Buffer. For objects other than these 3 basic data types, 796the argument is treated as a string containing the name of the object 797type. This expands the utility of Concatenate and the Printf/Fprintf 798macros. ACPICA BZ 1222. 799 800Cleaned up the output of the ASL Debug object. The timer() value is now 801optional and no longer emitted by default. Also, the basic data types of 802Integer/String/Buffer are simply emitted as their values, without a data 803type string -- since the data type is obvious from the output. ACPICA BZ 8041221. 805 806Example Code and Data Size: These are the sizes for the OS-independent 807acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 808debug version of the code includes the debug output trace mechanism and 809has a much larger code and data size. 810 811 Current Release: 812 Non-Debug Version: 102.6K Code, 28.4K Data, 131.0K Total 813 Debug Version: 200.3K Code, 81.9K Data, 282.3K Total 814 Previous Release: 815 Non-Debug Version: 102.0K Code, 28.3K Data, 130.3K Total 816 Debug Version: 199.6K Code, 81.8K Data, 281.4K Total 817 818 8192) iASL Compiler/Disassembler and Tools: 820 821iASL: Fixed some issues with the ASL Include() operator. This operator 822was incorrectly defined in the iASL parser rules, causing a new scope to 823be opened for the code within the include file. This could lead to 824several issues, including allowing ASL code that is technically illegal 825and not supported by AML interpreters. Note, this does not affect the 826related #include preprocessor operator. ACPICA BZ 1212. 827 828iASL/Disassembler: Implemented support for the ASL ElseIf operator. This 829operator is essentially an ASL macro since there is no AML opcode 830associated with it. The code emitted by the iASL compiler for ElseIf is 831an Else opcode followed immediately by an If opcode. The disassembler 832will now emit an ElseIf if it finds an Else immediately followed by an 833If. This simplifies the decoded ASL, especially for deeply nested 834If..Else and large Switch constructs. Thus, the disassembled code more 835closely follows the original source ASL. ACPICA BZ 1211. Example: 836 837 Old disassembly: 838 Else 839 { 840 If (Arg0 == 0x02) 841 { 842 Local0 = 0x05 843 } 844 } 845 846 New disassembly: 847 ElseIf (Arg0 == 0x02) 848 { 849 Local0 = 0x05 850 } 851 852AcpiExec: Added support for the new module level code behavior and the 853early region installation. This required a small change to the 854initialization, since AcpiExec must install its own operation region 855handlers. 856 857AcpiExec: Added support to make the debug object timer optional. Default 858is timer disabled. This cleans up the debug object output -- the timer 859data is rarely used. 860 861AcpiExec: Multiple ACPI tables are now loaded in the order that they 862appear on the command line. This can be important when there are 863interdependencies/references between the tables. 864 865iASL/Templates. Add support to generate template files with multiple 866SSDTs within a single output file. Also added ommand line support to 867specify the number of SSDTs (in addition to a single DSDT). ACPICA BZ 8681223, 1225. 869 870 871---------------------------------------- 87224 November 2015. Summary of changes for version 20151124: 873 8741) ACPICA kernel-resident subsystem: 875 876Fixed a possible regression for a previous update to FADT handling. The 877FADT no longer has a fixed table ID, causing some issues with code that 878was hardwired to a specific ID. Lv Zheng. 879 880Fixed a problem where the method auto-serialization could interfere with 881the current SyncLevel. This change makes the auto-serialization support 882transparent to the SyncLevel support and management. 883 884Removed support for the _SUB predefined name in AcpiGetObjectInfo. This 885interface is intended for early access to the namespace during the 886initial namespace device discovery walk. The _SUB method has been seen to 887access operation regions in some cases, causing errors because the 888operation regions are not fully initialized. 889 890AML Debugger: Fixed some issues with the terminate/quit/exit commands 891that can cause faults. Lv Zheng. 892 893AML Debugger: Add thread ID support so that single-step mode only applies 894to the AML Debugger thread. This prevents runtime errors within some 895kernels. Lv Zheng. 896 897Eliminated extraneous warnings from AcpiGetSleepTypeData. Since the _Sx 898methods that are invoked by this interface are optional, removed warnings 899emitted for the case where one or more of these methods do not exist. 900ACPICA BZ 1208, original change by Prarit Bhargava. 901 902Made a major pass through the entire ACPICA source code base to 903standardize formatting that has diverged a bit over time. There are no 904functional changes, but this will of course cause quite a few code 905differences from the previous ACPICA release. 906 907Example Code and Data Size: These are the sizes for the OS-independent 908acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 909debug version of the code includes the debug output trace mechanism and 910has a much larger code and data size. 911 912 Current Release: 913 Non-Debug Version: 102.0K Code, 28.3K Data, 130.3K Total 914 Debug Version: 199.6K Code, 81.8K Data, 281.4K Total 915 Previous Release: 916 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total 917 Debug Version: 199.3K Code, 81.4K Data, 280.7K Total 918 919 9202) iASL Compiler/Disassembler and Tools: 921 922iASL/acpiexec/acpixtract/disassembler: Added support to allow multiple 923definition blocks within a single ASL file and the resulting AML file. 924Support for this type of file was also added to the various tools that 925use binary AML files: acpiexec, acpixtract, and the AML disassembler. The 926example code below shows two definition blocks within the same file: 927 928 DefinitionBlock ("dsdt.aml", "DSDT", 2, "Intel", "Template", 9290x12345678) 930 { 931 } 932 DefinitionBlock ("", "SSDT", 2, "Intel", "Template", 0xABCDEF01) 933 { 934 } 935 936iASL: Enhanced typechecking for the Name() operator. All expressions for 937the value of the named object must be reduced/folded to a single constant 938at compile time, as per the ACPI specification (the AML definition of 939Name()). 940 941iASL: Fixed some code indentation issues for the -ic and -ia options (C 942and assembly headers). Now all emitted code correctly begins in column 1. 943 944iASL: Added an error message for an attempt to open a Scope() on an 945object defined in an SSDT. The DSDT is always loaded into the namespace 946first, so any attempt to open a Scope on an SSDT object will fail at 947runtime. 948 949 950---------------------------------------- 95130 September 2015. Summary of changes for version 20150930: 952 9531) ACPICA kernel-resident subsystem: 954 955Debugger: Implemented several changes and bug fixes to assist support for 956the in-kernel version of the AML debugger. Lv Zheng. 957- Fix the "predefined" command for in-kernel debugger. 958- Do not enter debug command loop for the help and version commands. 959- Disallow "execute" command during execution/single-step of a method. 960 961Interpreter: Updated runtime typechecking for all operators that have 962target operands. The operand is resolved and validated that it is legal. 963For example, the target cannot be a non-data object such as a Device, 964Mutex, ThermalZone, etc., as per the ACPI specification. 965 966Debugger: Fixed the double-mutex user I/O handshake to work when local 967deadlock detection is enabled. 968 969Debugger: limited display of method locals and arguments (LocalX and 970ArgX) to only those that have actually been initialized. This prevents 971lines of extraneous output. 972 973Updated the definition of the NFIT table to correct the bit polarity of 974one flag: ACPI_NFIT_MEM_ARMED --> ACPI_NFIT_MEM_NOT_ARMED 975 976Example Code and Data Size: These are the sizes for the OS-independent 977acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 978debug version of the code includes the debug output trace mechanism and 979has a much larger code and data size. 980 981 Current Release: 982 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total 983 Debug Version: 199.3K Code, 81.4K Data, 280.7K Total 984 Previous Release: 985 Non-Debug Version: 101.3K Code, 27.7K Data, 129.0K Total 986 Debug Version: 198.6K Code, 80.9K Data, 279.5K Total 987 988 9892) iASL Compiler/Disassembler and Tools: 990 991iASL: Improved the compile-time typechecking for operands of many of the 992ASL operators: 993 994-- Added an option to disable compiler operand/operator typechecking (- 995ot). 996 997-- For the following operators, the TermArg operands are now validated 998when possible to be Integer data objects: BankField, OperationRegion, 999DataTableRegion, Buffer, and Package. 1000 1001-- Store (Source, Target): Both the source and target operands are 1002resolved and checked that the operands are both legal. For example, 1003neither operand can be a non-data object such as a Device, Mutex, 1004ThermalZone, etc. Note, as per the ACPI specification, the CopyObject 1005operator can be used to store an object to any type of target object. 1006 1007-- Store (Source, Target): If the source is a Package object, the target 1008must be a Package object, LocalX, ArgX, or Debug. Likewise, if the target 1009is a Package, the source must also be a Package. 1010 1011-- Store (Source, Target): A warning is issued if the source and target 1012resolve to the identical named object. 1013 1014-- Store (Source, <method invocation>): An error is generated for the 1015target method invocation, as this construct is not supported by the AML 1016interpreter. 1017 1018-- For all ASL math and logic operators, the target operand must be a 1019data object (Integer, String, Buffer, LocalX, ArgX, or Debug). This 1020includes the function return value also. 1021 1022-- External declarations are also included in the typechecking where 1023possible. External objects defined using the UnknownObj keyword cannot be 1024typechecked, however. 1025 1026iASL and Disassembler: Added symbolic (ASL+) support for the ASL Index 1027operator: 1028- Legacy code: Index(PKG1, 3) 1029- New ASL+ code: PKG1[3] 1030This completes the ACPI 6.0 ASL+ support as it was the only operator not 1031supported. 1032 1033iASL: Fixed the file suffix for the preprocessor output file (.i). Two 1034spaces were inadvertently appended to the filename, causing file access 1035and deletion problems on some systems. 1036 1037ASL Test Suite (ASLTS): Updated the master makefile to generate all 1038possible compiler output files when building the test suite -- thus 1039exercising these features of the compiler. These files are automatically 1040deleted when the test suite exits. 1041 1042 1043---------------------------------------- 104418 August 2015. Summary of changes for version 20150818: 1045 10461) ACPICA kernel-resident subsystem: 1047 1048Fix a regression for AcpiGetTableByIndex interface causing it to fail. Lv 1049Zheng. ACPICA BZ 1186. 1050 1051Completed development to ensure that the ACPICA Disassembler and Debugger 1052are fully standalone components of ACPICA. Removed cross-component 1053dependences. Lv Zheng. 1054 1055The max-number-of-AML-loops is now runtime configurable (previously was 1056compile-time only). This is essentially a loop timeout to force-abort 1057infinite AML loops. ACPCIA BZ 1192. 1058 1059Debugger: Cleanup output to dump ACPI names and namepaths without any 1060trailing underscores. Lv Zheng. ACPICA BZ 1135. 1061 1062Removed unnecessary conditional compilations across the Debugger and 1063Disassembler components where entire modules could be left uncompiled. 1064 1065The aapits test is deprecated and has been removed from the ACPICA git 1066tree. The test has never been completed and has not been maintained, thus 1067becoming rather useless. ACPICA BZ 1015, 794. 1068 1069A batch of small changes to close bugzilla and other reports: 1070- Remove duplicate code for _PLD processing. ACPICA BZ 1176. 1071- Correctly cleanup after a ACPI table load failure. ACPICA BZ 1185. 1072- iASL: Support POSIX yacc again in makefile. Jung-uk Kim. 1073- ACPI table support: general cleanup and simplification. Lv Zheng, Bob 1074Moore. 1075- ACPI table support: fix for a buffer read overrun in AcpiTbFindTable. 1076ACPICA BZ 1184. 1077- Enhance parameter validation for DataTableRegion and LoadTable ASL/AML 1078operators. 1079- Debugger: Split debugger initialization/termination interfaces. Lv 1080Zheng. 1081- AcpiExec: Emit OemTableId for SSDTs during the load phase for table 1082identification. 1083- AcpiExec: Add debug message during _REG method phase during table 1084load/init. 1085- AcpiNames: Fix a regression where some output was missing and no longer 1086emitted. 1087- Debugger: General cleanup and simplification. Lv Zheng. 1088- Disassembler: Cleanup use of several global option variables. Lv Zheng. 1089 1090Example Code and Data Size: These are the sizes for the OS-independent 1091acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1092debug version of the code includes the debug output trace mechanism and 1093has a much larger code and data size. 1094 1095 Current Release: 1096 Non-Debug Version: 101.3K Code, 27.7K Data, 129.0K Total 1097 Debug Version: 198.6K Code, 80.9K Data, 279.5K Total 1098 Previous Release: 1099 Non-Debug Version: 100.9K Code, 24.5K Data, 125.4K Total 1100 Debug Version: 197.8K Code, 81.5K Data, 279.3K Total 1101 1102 11032) iASL Compiler/Disassembler and Tools: 1104 1105AcpiExec: Fixed a problem where any more than 32 ACPI tables in the XSDT 1106were not handled properly and caused load errors. Now, properly invoke 1107and use the ACPICA auto-reallocate mechanism for ACPI table data 1108structures. ACPICA BZ 1188 1109 1110AcpiNames: Add command-line wildcard support for ACPI table files. ACPICA 1111BZ 1190. 1112 1113AcpiExec and AcpiNames: Add -l option to load ACPI tables only. For 1114AcpiExec, this means that no control methods (like _REG/_INI/_STA) are 1115executed during initialization. ACPICA BZ 1187, 1189. 1116 1117iASL/Disassembler: Implemented a prototype "listing" mode that emits AML 1118that corresponds to each disassembled ASL statement, to simplify 1119debugging. ACPICA BZ 1191. 1120 1121Debugger: Add option to the "objects" command to display a summary of the 1122current namespace objects (Object type and count). This is displayed if 1123the command is entered with no arguments. 1124 1125AcpiNames: Add -x option to specify debug level, similar to AcpiExec. 1126 1127 1128---------------------------------------- 112917 July 2015. Summary of changes for version 20150717: 1130 11311) ACPICA kernel-resident subsystem: 1132 1133Improved the partitioning between the Debugger and Disassembler 1134components. This allows the Debugger to be used standalone within kernel 1135code without the Disassembler (which is used for single stepping also). 1136This renames and moves one file, dmobject.c to dbobject.c. Lv Zheng. 1137 1138Debugger: Implemented a new command to trace the execution of control 1139methods (Trace). This is especially useful for the in-kernel version of 1140the debugger when file I/O may not be available for method trace output. 1141See the ACPICA reference for more information. Lv Zheng. 1142 1143Moved all C library prototypes (used for the local versions of these 1144functions when requested) to a new header, acclib.h 1145Cleaned up the use of non-ANSI C library functions. These functions are 1146implemented locally in ACPICA. Moved all such functions to a common 1147source file, utnonansi.c 1148 1149Debugger: Fixed a problem with the "!!" command (get last command 1150executed) where the debugger could enter an infinite loop and eventually 1151crash. 1152 1153Removed the use of local macros that were used for some of the standard C 1154library functions to automatically cast input parameters. This mostly 1155affected the is* functions where the input parameter is defined to be an 1156int. This required a few modifications to the main ACPICA source code to 1157provide casting for these functions and eliminate possible compiler 1158warnings for these parameters. 1159 1160Across the source code, added additional status/error checking to resolve 1161issues discovered by static source code analysis tools such as Coverity. 1162 1163Example Code and Data Size: These are the sizes for the OS-independent 1164acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1165debug version of the code includes the debug output trace mechanism and 1166has a much larger code and data size. 1167 1168 Current Release: 1169 Non-Debug Version: 100.9K Code, 24.5K Data, 125.4K Total 1170 Debug Version: 197.8K Code, 81.5K Data, 279.3K Total 1171 Previous Release: 1172 Non-Debug Version: 100.6K Code, 27.6K Data, 128.2K Total 1173 Debug Version: 196.2K Code, 81.0K Data, 277.2K Total 1174 1175 11762) iASL Compiler/Disassembler and Tools: 1177 1178iASL: Fixed a regression where the device map file feature no longer 1179worked properly when used in conjunction with the disassembler. It only 1180worked properly with the compiler itself. 1181 1182iASL: Implemented a new warning for method LocalX variables that are set 1183but never used (similar to a C compiler such as gcc). This also applies 1184to ArgX variables that are not defined by the parent method, and are 1185instead (legally) used as local variables. 1186 1187iASL/Preprocessor: Finished the pass-through of line numbers from the 1188preprocessor to the compiler. This ensures that compiler errors/warnings 1189have the correct original line numbers and filenames, regardless of any 1190#include files. 1191 1192iASL/Preprocessor: Fixed a couple of issues with comment handling and the 1193pass-through of comments to the preprocessor output file (which becomes 1194the compiler input file). Also fixed a problem with // comments that 1195appear after a math expression. 1196 1197iASL: Added support for the TCPA server table to the table compiler and 1198template generator. (The client table was already previously supported) 1199 1200iASL/Preprocessor: Added a permanent #define of the symbol "__IASL__" to 1201identify the iASL compiler. 1202 1203Cleaned up the use of the macros NEGATIVE and POSITIVE which were defined 1204multiple times. The new names are ACPI_SIGN_NEGATIVE and 1205ACPI_SIGN_POSITIVE. 1206 1207AcpiHelp: Update to expand help messages for the iASL preprocessor 1208directives. 1209 1210 1211---------------------------------------- 121219 June 2015. Summary of changes for version 20150619: 1213 1214Two regressions in version 20150616 have been addressed: 1215 1216Fixes some problems/issues with the C library macro removal (ACPI_STRLEN, 1217etc.) This update changes ACPICA to only use the standard headers for 1218functions, or the prototypes for the local versions of the C library 1219functions. Across the source code, this required some additional casts 1220for some Clib invocations for portability. Moved all local prototypes to 1221a new file, acclib.h 1222 1223Fixes several problems with recent changes to the handling of the FACS 1224table that could cause some systems not to boot. 1225 1226 1227---------------------------------------- 122816 June 2015. Summary of changes for version 20150616: 1229 1230 12311) ACPICA kernel-resident subsystem: 1232 1233Across the entire ACPICA source code base, the various macros for the C 1234library functions (such as ACPI_STRLEN, etc.) have been removed and 1235replaced by the standard C library names (strlen, etc.) The original 1236purpose for these macros is no longer applicable. This simplification 1237reduces the number of macros used in the ACPICA source code 1238significantly, improving readability and maintainability. 1239 1240Implemented support for a new ACPI table, the OSDT. This table, the 1241"override" SDT, can be loaded directly by the host OS at boot time. It 1242enables the replacement of existing namespace objects that were installed 1243via the DSDT and/or SSDTs. The primary purpose for this is to replace 1244buggy or incorrect ASL/AML code obtained via the BIOS. The OSDT is slated 1245for inclusion in a future version of the ACPI Specification. Lv Zheng/Bob 1246Moore. 1247 1248Added support for systems with (improperly) two FACS tables -- a "32-bit" 1249table (via FADT 32-bit legacy field) and a "64-bit" table (via the 64-bit 1250X field). This change will support both automatically. There continues to 1251be systems found with this issue. This support requires a change to the 1252AcpiSetFirmwareWakingVector interface. Also, a public global variable has 1253been added to allow the host to select which FACS is desired 1254(AcpiGbl_Use32BitFacsAddresses). See the ACPICA reference for more 1255details Lv Zheng. 1256 1257Added a new feature to allow for systems that do not contain an FACS. 1258Although this is already supported on hardware-reduced platforms, the 1259feature has been extended for all platforms. The reasoning is that we do 1260not want to abort the entire ACPICA initialization just because the 1261system is seriously buggy and has no FACS. 1262 1263Fixed a problem where the GUID strings for NFIT tables (in acuuid.h) were 1264not correctly transcribed from the ACPI specification in ACPICA version 126520150515. 1266 1267Implemented support for the _CLS object in the AcpiGetObjectInfo external 1268interface. 1269 1270Updated the definitions of the TCPA and TPM2 ACPI tables to the more 1271recent TCG ACPI Specification, December 14, 2014. Table disassembler and 1272compiler also updated. Note: The TCPA "server" table is not supported by 1273the disassembler/table-compiler at this time. 1274 1275ACPI 6.0: Added definitions for the new GIC version field in the MADT. 1276 1277Example Code and Data Size: These are the sizes for the OS-independent 1278acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1279debug version of the code includes the debug output trace mechanism and 1280has a much larger code and data size. 1281 1282 Current Release: 1283 Non-Debug Version: 100.6K Code, 27.6K Data, 128.2K Total 1284 Debug Version: 196.2K Code, 81.0K Data, 277.2K Total 1285 Previous Release: 1286 Non-Debug Version: 99.9K Code, 27.5K Data, 127.4K Total 1287 Debug Version: 195.2K Code, 80.8K Data, 276.0K Total 1288 1289 12902) iASL Compiler/Disassembler and Tools: 1291 1292Disassembler: Fixed a problem with the new symbolic operator disassembler 1293where incorrect ASL code could be emitted in some cases for the "non- 1294commutative" operators -- Subtract, Divide, Modulo, ShiftLeft, and 1295ShiftRight. The actual problem cases seem to be rather unusual in common 1296ASL code, however. David Box. 1297 1298Modified the linux version of acpidump to obtain ACPI tables from not 1299just /dev/mem (which may not exist) and /sys/firmware/acpi/tables. Lv 1300Zheng. 1301 1302iASL: Fixed a problem where the user preprocessor output file (.i) 1303contained extra data that was not expected. The compiler was using this 1304file as a temporary file and passed through #line directives in order to 1305keep compiler error messages in sync with the input file and line number 1306across multiple include files. The (.i) is no longer a temporary file as 1307the compiler uses a new, different file for the original purpose. 1308 1309iASL: Fixed a problem where comments within the original ASL source code 1310file were not passed through to the preprocessor output file, nor any 1311listing files. 1312 1313iASL: Fixed some issues for the handling of the "#include" preprocessor 1314directive and the similar (but not the same) "Include" ASL operator. 1315 1316iASL: Add support for the new OSDT in both the disassembler and compiler. 1317 1318iASL: Fixed a problem with the constant folding support where a Buffer 1319object could be incorrectly generated (incorrectly formed) during a 1320conversion to a Store() operator. 1321 1322AcpiHelp: Updated for new NFIT GUIDs, "External" AML opcode, and new 1323description text for the _REV predefined name. _REV now permanently 1324returns 2, as per the ACPI 6.0 specification. 1325 1326Debugger: Enhanced the output of the Debug ASL object for references 1327produced by the Index operator. For Buffers and strings, only output the 1328actual byte pointed to by the index. For packages, only print the single 1329package element decoded by the index. Previously, the entire 1330buffer/string/package was emitted. 1331 1332iASL/Table-compiler: Fixed a regression where the "generic" data types 1333were no longer recognized, causing errors. 1334 1335 1336---------------------------------------- 133715 May 2015. Summary of changes for version 20150515: 1338 1339This release implements most of ACPI 6.0 as described below. 1340 13411) ACPICA kernel-resident subsystem: 1342 1343Implemented runtime argument checking and return value checking for all 1344new ACPI 6.0 predefined names. This includes: _BTH, _CR3, _DSD, _LPI, 1345_MTL, _PRR, _RDI, _RST, _TFP, _TSN. 1346 1347Example Code and Data Size: These are the sizes for the OS-independent 1348acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1349debug version of the code includes the debug output trace mechanism and 1350has a much larger code and data size. 1351 1352 Current Release: 1353 Non-Debug Version: 99.9K Code, 27.5K Data, 127.4K Total 1354 Debug Version: 195.2K Code, 80.8K Data, 276.0K Total 1355 Previous Release: 1356 Non-Debug Version: 99.1K Code, 27.3K Data, 126.4K Total 1357 Debug Version: 192.8K Code, 79.9K Data, 272.7K Total 1358 1359 13602) iASL Compiler/Disassembler and Tools: 1361 1362iASL compiler: Added compile-time support for all new ACPI 6.0 predefined 1363names (argument count validation and return value typechecking.) 1364 1365iASL disassembler and table compiler: implemented support for all new 1366ACPI 6.0 tables. This includes: DRTM, IORT, LPIT, NFIT, STAO, WPBT, XENV. 1367 1368iASL disassembler and table compiler: Added ACPI 6.0 changes to existing 1369tables: FADT, MADT. 1370 1371iASL preprocessor: Added a new directive to enable inclusion of binary 1372blobs into ASL code. The new directive is #includebuffer. It takes a 1373binary file as input and emits a named ascii buffer object into the ASL 1374code. 1375 1376AcpiHelp: Added support for all new ACPI 6.0 predefined names. 1377 1378AcpiHelp: Added a new option, -d, to display all iASL preprocessor 1379directives. 1380 1381AcpiHelp: Added a new option, -t, to display all known/supported ACPI 1382tables. 1383 1384 1385---------------------------------------- 138610 April 2015. Summary of changes for version 20150410: 1387 1388Reverted a change introduced in version 20150408 that caused 1389a regression in the disassembler where incorrect operator 1390symbols could be emitted. 1391 1392 1393---------------------------------------- 139408 April 2015. Summary of changes for version 20150408: 1395 1396 13971) ACPICA kernel-resident subsystem: 1398 1399Permanently set the return value for the _REV predefined name. It now 1400returns 2 (was 5). This matches other ACPI implementations. _REV will be 1401deprecated in the future, and is now defined to be 1 for ACPI 1.0, and 2 1402for ACPI 2.0 and later. It should never be used to differentiate or 1403identify operating systems. 1404 1405Added the "Windows 2015" string to the _OSI support. ACPICA will now 1406return TRUE to a query with this string. 1407 1408Fixed several issues with the local version of the printf function. 1409 1410Added the C99 compiler option (-std=c99) to the Unix makefiles. 1411 1412 Current Release: 1413 Non-Debug Version: 99.9K Code, 27.4K Data, 127.3K Total 1414 Debug Version: 195.2K Code, 80.7K Data, 275.9K Total 1415 Previous Release: 1416 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total 1417 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total 1418 1419 14202) iASL Compiler/Disassembler and Tools: 1421 1422iASL: Implemented an enhancement to the constant folding feature to 1423transform the parse tree to a simple Store operation whenever possible: 1424 Add (2, 3, X) ==> is converted to: Store (5, X) 1425 X = 2 + 3 ==> is converted to: Store (5, X) 1426 1427Updated support for the SLIC table (Software Licensing Description Table) 1428in both the Data Table compiler and the disassembler. The SLIC table 1429support now conforms to "Microsoft Software Licensing Tables (SLIC and 1430MSDM). November 29, 2011. Copyright 2011 Microsoft". Note: Any SLIC data 1431following the ACPI header is now defined to be "Proprietary Data", and as 1432such, can only be entered or displayed as a hex data block. 1433 1434Implemented full support for the MSDM table as described in the document 1435above. Note: The format of MSDM is similar to SLIC. Any MSDM data 1436following the ACPI header is defined to be "Proprietary Data", and can 1437only be entered or displayed as a hex data block. 1438 1439Implemented the -Pn option for the iASL Table Compiler (was only 1440implemented for the ASL compiler). This option disables the iASL 1441preprocessor. 1442 1443Disassembler: For disassembly of Data Tables, added a comment field 1444around the Ascii equivalent data that is emitted as part of the "Raw 1445Table Data" block. This prevents the iASL Preprocessor from possible 1446confusion if/when the table is compiled. 1447 1448Disassembler: Added an option (-df) to force the disassembler to assume 1449that the table being disassembled contains valid AML. This feature is 1450useful for disassembling AML files that contain ACPI signatures other 1451than DSDT or SSDT (such as OEMx or other signatures). 1452 1453Changes for the EFI version of the tools: 14541) Fixed a build error/issue 14552) Fixed a cast warning 1456 1457iASL: Fixed a path issue with the __FILE__ operator by making the 1458directory prefix optional within the internal SplitInputFilename 1459function. 1460 1461Debugger: Removed some unused global variables. 1462 1463Tests: Updated the makefile for proper generation of the AAPITS suite. 1464 1465 1466---------------------------------------- 146704 February 2015. Summary of changes for version 20150204: 1468 1469ACPICA kernel-resident subsystem: 1470 1471Updated all ACPICA copyrights and signons to 2014. Added the 2014 1472copyright to all module headers and signons, including the standard Linux 1473header. This affects virtually every file in the ACPICA core subsystem, 1474iASL compiler, all ACPICA utilities, and the test suites. 1475 1476Events: Introduce ACPI_GPE_DISPATCH_RAW_HANDLER to fix GPE storm issues. 1477A raw gpe handling mechanism was created to allow better handling of GPE 1478storms that aren't easily managed by the normal handler. The raw handler 1479allows disabling/renabling of the the GPE so that interrupt storms can be 1480avoided in cases where events cannot be timely serviced. In this 1481scenario, handlers should use the AcpiSetGpe() API to disable/enable the 1482GPE. This API will leave the reference counts undisturbed, thereby 1483preventing unintentional clearing of the GPE when the intent in only to 1484temporarily disable it. Raw handlers allow enabling and disabling of a 1485GPE by removing GPE register locking. As such, raw handlers much provide 1486their own locks while using GPE API's to protect access to GPE data 1487structures. 1488Lv Zheng 1489 1490Events: Always modify GPE registers under the GPE lock. 1491Applies GPE lock around AcpiFinishGpe() to protect access to GPE register 1492values. Reported as bug by joe.liu@apple.com. 1493 1494Unix makefiles: Separate option to disable optimizations and 1495_FORTIFY_SOURCE. This change removes the _FORTIFY_SOURCE flag from the 1496NOOPT disable option and creates a separate flag (NOFORTIFY) for this 1497purpose. Some toolchains may define _FORTIFY_SOURCE which leads redefined 1498errors when building ACPICA. This allows disabling the option without 1499also having to disable optimazations. 1500David Box 1501 1502 Current Release: 1503 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total 1504 Debug Version: 199.2K Code, 82.4K Data, 281.6K Total 1505 1506-- 1507-------------------------------------- 150807 November 2014. Summary of changes for version 20141107: 1509 1510This release is available at https://acpica.org/downloads 1511 1512This release introduces and implements language extensions to ASL that 1513provide support for symbolic ("C-style") operators and expressions. These 1514language extensions are known collectively as ASL+. 1515 1516 15171) iASL Compiler/Disassembler and Tools: 1518 1519Disassembler: Fixed a problem with disassembly of the UartSerialBus 1520macro. Changed "StopBitsNone" to the correct "StopBitsZero". David E. 1521Box. 1522 1523Disassembler: Fixed the Unicode macro support to add escape sequences. 1524All non-printable ASCII values are emitted as escape sequences, as well 1525as the standard escapes for quote and backslash. Ensures that the 1526disassembled macro can be correctly recompiled. 1527 1528iASL: Added Printf/Fprintf macros for formatted output. These macros are 1529translated to existing AML Concatenate and Store operations. Printf 1530writes to the ASL Debug object. Fprintf allows the specification of an 1531ASL name as the target. Only a single format specifier is required, %o, 1532since the AML interpreter dynamically converts objects to the required 1533type. David E. Box. 1534 1535 (old) Store (Concatenate (Concatenate (Concatenate (Concatenate 1536 (Concatenate (Concatenate (Concatenate ("", Arg0), 1537 ": Unexpected value for "), Arg1), ", "), Arg2), 1538 " at line "), Arg3), Debug) 1539 1540 (new) Printf ("%o: Unexpected value for %o, %o at line %o", 1541 Arg0, Arg1, Arg2, Arg3) 1542 1543 (old) Store (Concatenate (Concatenate (Concatenate (Concatenate 1544 ("", Arg1), ": "), Arg0), " Successful"), STR1) 1545 1546 (new) Fprintf (STR1, "%o: %o Successful", Arg1, Arg0) 1547 1548iASL: Added debug options (-bp, -bt) to dynamically prune levels of the 1549ASL parse tree before the AML code is generated. This allows blocks of 1550ASL code to be removed in order to help locate and identify problem 1551devices and/or code. David E. Box. 1552 1553AcpiExec: Added support (-fi) for an optional namespace object 1554initialization file. This file specifies initial values for namespace 1555objects as necessary for debugging and testing different ASL code paths 1556that may be taken as a result of BIOS options. 1557 1558 15592) Overview of symbolic operator support for ASL (ASL+) 1560------------------------------------------------------- 1561 1562As an extension to the ASL language, iASL implements support for symbolic 1563(C-style) operators for math and logical expressions. This can greatly 1564simplify ASL code as well as improve both readability and 1565maintainability. These language extensions can exist concurrently with 1566all legacy ASL code and expressions. 1567 1568The symbolic extensions are 100% compatible with existing AML 1569interpreters, since no new AML opcodes are created. To implement the 1570extensions, the iASL compiler transforms the symbolic expressions into 1571the legacy ASL/AML equivalents at compile time. 1572 1573Full symbolic expressions are supported, along with the standard C 1574precedence and associativity rules. 1575 1576Full disassembler support for the symbolic expressions is provided, and 1577creates an automatic migration path for existing ASL code to ASL+ code 1578via the disassembly process. By default, the disassembler now emits ASL+ 1579code with symbolic expressions. An option (-dl) is provided to force the 1580disassembler to emit legacy ASL code if desired. 1581 1582Below is the complete list of the currently supported symbolic operators 1583with examples. See the iASL User Guide for additional information. 1584 1585 1586ASL+ Syntax Legacy ASL Equivalent 1587----------- --------------------- 1588 1589 // Math operators 1590 1591Z = X + Y Add (X, Y, Z) 1592Z = X - Y Subtract (X, Y, Z) 1593Z = X * Y Multiply (X, Y, Z) 1594Z = X / Y Divide (X, Y, , Z) 1595Z = X % Y Mod (X, Y, Z) 1596Z = X << Y ShiftLeft (X, Y, Z) 1597Z = X >> Y ShiftRight (X, Y, Z) 1598Z = X & Y And (X, Y, Z) 1599Z = X | Y Or (X, Y, Z) 1600Z = X ^ Y Xor (X, Y, Z) 1601Z = ~X Not (X, Z) 1602X++ Increment (X) 1603X-- Decrement (X) 1604 1605 // Logical operators 1606 1607(X == Y) LEqual (X, Y) 1608(X != Y) LNotEqual (X, Y) 1609(X < Y) LLess (X, Y) 1610(X > Y) LGreater (X, Y) 1611(X <= Y) LLessEqual (X, Y) 1612(X >= Y) LGreaterEqual (X, Y) 1613(X && Y) LAnd (X, Y) 1614(X || Y) LOr (X, Y) 1615(!X) LNot (X) 1616 1617 // Assignment and compound assignment operations 1618 1619X = Y Store (Y, X) 1620X += Y Add (X, Y, X) 1621X -= Y Subtract (X, Y, X) 1622X *= Y Multiply (X, Y, X) 1623X /= Y Divide (X, Y, , X) 1624X %= Y Mod (X, Y, X) 1625X <<= Y ShiftLeft (X, Y, X) 1626X >>= Y ShiftRight (X, Y, X) 1627X &= Y And (X, Y, X) 1628X |= Y Or (X, Y, X) 1629X ^= Y Xor (X, Y, X) 1630 1631 16323) ASL+ Examples: 1633----------------- 1634 1635Legacy ASL: 1636 If (LOr (LOr (LEqual (And (R510, 0x03FB), 0x02E0), LEqual ( 1637 And (R520, 0x03FB), 0x02E0)), LOr (LEqual (And (R530, 16380x03FB), 1639 0x02E0), LEqual (And (R540, 0x03FB), 0x02E0)))) 1640 { 1641 And (MEMB, 0xFFFFFFF0, SRMB) 1642 Store (MEMB, Local2) 1643 Store (PDBM, Local1) 1644 And (PDBM, 0xFFFFFFFFFFFFFFF9, PDBM) 1645 Store (SRMB, MEMB) 1646 Or (PDBM, 0x02, PDBM) 1647 } 1648 1649ASL+ version: 1650 If (((R510 & 0x03FB) == 0x02E0) || 1651 ((R520 & 0x03FB) == 0x02E0) || 1652 ((R530 & 0x03FB) == 0x02E0) || 1653 ((R540 & 0x03FB) == 0x02E0)) 1654 { 1655 SRMB = (MEMB & 0xFFFFFFF0) 1656 Local2 = MEMB 1657 Local1 = PDBM 1658 PDBM &= 0xFFFFFFFFFFFFFFF9 1659 MEMB = SRMB 1660 PDBM |= 0x02 1661 } 1662 1663Legacy ASL: 1664 Store (0x1234, Local1) 1665 Multiply (Add (Add (Local1, TEST), 0x20), Local2, Local3) 1666 Multiply (Local2, Add (Add (Local1, TEST), 0x20), Local3) 1667 Add (Local1, Add (TEST, Multiply (0x20, Local2)), Local3) 1668 Store (Index (PKG1, 0x03), Local6) 1669 Store (Add (Local3, Local2), Debug) 1670 Add (Local1, 0x0F, Local2) 1671 Add (Local1, Multiply (Local2, Local3), Local2) 1672 Multiply (Add (Add (Local1, TEST), 0x20), ToBCD (Local1), Local3) 1673 1674ASL+ version: 1675 Local1 = 0x1234 1676 Local3 = (((Local1 + TEST) + 0x20) * Local2) 1677 Local3 = (Local2 * ((Local1 + TEST) + 0x20)) 1678 Local3 = (Local1 + (TEST + (0x20 * Local2))) 1679 Local6 = Index (PKG1, 0x03) 1680 Debug = (Local3 + Local2) 1681 Local2 = (Local1 + 0x0F) 1682 Local2 = (Local1 + (Local2 * Local3)) 1683 Local3 = (((Local1 + TEST) + 0x20) * ToBCD (Local1)) 1684 1685 1686---------------------------------------- 168726 September 2014. Summary of changes for version 20140926: 1688 16891) ACPICA kernel-resident subsystem: 1690 1691Updated the GPIO operation region handler interface (GeneralPurposeIo). 1692In order to support GPIO Connection objects with multiple pins, along 1693with the related Field objects, the following changes to the interface 1694have been made: The Address is now defined to be the offset in bits of 1695the field unit from the previous invocation of a Connection. It can be 1696viewed as a "Pin Number Index" into the connection resource descriptor. 1697The BitWidth is the exact bit width of the field. It is usually one bit, 1698but not always. See the ACPICA reference guide (section 8.8.6.2.1) for 1699additional information and examples. 1700 1701GPE support: During ACPICA/GPE initialization, ensure that all GPEs with 1702corresponding _Lxx/_Exx methods are disabled (they may have been enabled 1703by the firmware), so that they cannot fire until they are enabled via 1704AcpiUpdateAllGpes. Rafael J. Wysocki. 1705 1706Added a new return flag for the Event/GPE status interfaces -- 1707AcpiGetEventStatus and AcpiGetGpeStatus. The new 1708ACPI_EVENT_FLAGS_HAS_HANDLER flag is used to indicate that the event or 1709GPE currently has a handler associated with it, and can thus actually 1710affect the system. Lv Zheng. 1711 1712Example Code and Data Size: These are the sizes for the OS-independent 1713acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1714debug version of the code includes the debug output trace mechanism and 1715has a much larger code and data size. 1716 1717 Current Release: 1718 Non-Debug Version: 99.1K Code, 27.3K Data, 126.4K Total 1719 Debug Version: 192.8K Code, 79.9K Data, 272.7K Total 1720 Previous Release: 1721 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total 1722 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total 1723 17242) iASL Compiler/Disassembler and Tools: 1725 1726iASL: Fixed a memory allocation/free regression introduced in 20140828 1727that could cause the compiler to crash. This was introduced inadvertently 1728during the effort to eliminate compiler memory leaks. ACPICA BZ 1111, 17291113. 1730 1731iASL: Removed two error messages that have been found to create false 1732positives, until they can be fixed and fully validated (ACPICA BZ 1112): 17331) Illegal forward reference within a method 17342) Illegal reference across two methods 1735 1736iASL: Implemented a new option (-lm) to create a hardware mapping file 1737that summarizes all GPIO, I2C, SPI, and UART connections. This option 1738works for both the compiler and disassembler. See the iASL compiler user 1739guide for additional information and examples (section 6.4.6). 1740 1741AcpiDump: Added support for the version 1 (ACPI 1.0) RSDP in addition to 1742version 2. This corrects the AE_BAD_HEADER exception seen on systems with 1743a version 1 RSDP. Lv Zheng ACPICA BZ 1097. 1744 1745AcpiExec: For Unix versions, don't attempt to put STDIN into raw mode 1746unless STDIN is actually a terminal. Assists with batch-mode processing. 1747ACPICA BZ 1114. 1748 1749Disassembler/AcpiHelp: Added another large group of recognized _HID 1750values. 1751 1752 1753---------------------------------------- 175428 August 2014. Summary of changes for version 20140828: 1755 17561) ACPICA kernel-resident subsystem: 1757 1758Fixed a problem related to the internal use of the Timer() operator where 1759a 64-bit divide could cause an attempted link to a double-precision math 1760library. This divide is not actually necessary, so the code was 1761restructured to eliminate it. Lv Zheng. 1762 1763ACPI 5.1: Added support for the runtime validation of the _DSD package 1764(similar to the iASL support). 1765 1766ACPI 5.1/Headers: Added support for the GICC affinity subtable to the 1767SRAT table. Hanjun Guo <hanjun.guo@linaro.org>. 1768 1769Example Code and Data Size: These are the sizes for the OS-independent 1770acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1771debug version of the code includes the debug output trace mechanism and 1772has a much larger code and data size. 1773 1774 Current Release: 1775 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total 1776 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total 1777 Previous Release: 1778 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total1 1779 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total 1780 17812) iASL Compiler/Disassembler and Tools: 1782 1783AcpiExec: Fixed a problem on unix systems where the original terminal 1784state was not always properly restored upon exit. Seen when using the -v 1785option. ACPICA BZ 1104. 1786 1787iASL: Fixed a problem with the validation of the ranges/length within the 1788Memory24 resource descriptor. There was a boundary condition when the 1789range was equal to the (length -1) caused by the fact that these values 1790are defined in 256-byte blocks, not bytes. ACPICA BZ 1098 1791 1792Disassembler: Fixed a problem with the GpioInt descriptor interrupt 1793polarity 1794flags. The flags are actually 2 bits, not 1, and the "ActiveBoth" keyword 1795is 1796now supported properly. 1797 1798ACPI 5.1: Added the GICC affinity subtable to the SRAT table. Supported 1799in the disassembler, data table compiler, and table template generator. 1800 1801iASL: Added a requirement for Device() objects that one of either a _HID 1802or _ADR must exist within the scope of a Device, as per the ACPI 1803specification. Remove a similar requirement that was incorrectly in place 1804for the _DSD object. 1805 1806iASL: Added error detection for illegal named references within control 1807methods that would cause runtime failures. Now trapped as errors are: 1) 1808References to objects within a non-parent control method. 2) Forward 1809references (within a method) -- for control methods, AML interpreters use 1810a one-pass parse of control methods. ACPICA BZ 1008. 1811 1812iASL: Added error checking for dependencies related to the _PSx power 1813methods. ACPICA BZ 1029. 18141) For _PS0, one of these must exist within the same scope: _PS1, _PS2, 1815_PS3. 18162) For _PS1, _PS2, and PS3: A _PS0 object must exist within the same 1817scope. 1818 1819iASL and table compiler: Cleanup miscellaneous memory leaks by fully 1820deploying the existing object and string caches and adding new caches for 1821the table compiler. 1822 1823iASL: Split the huge parser source file into multiple subfiles to improve 1824manageability. Generation now requires the M4 macro preprocessor, which 1825is part of the Bison distribution on both unix and windows platforms. 1826 1827AcpiSrc: Fixed and removed all extraneous warnings generated during 1828entire ACPICA source code scan and/or conversion. 1829 1830 1831---------------------------------------- 1832 183324 July 2014. Summary of changes for version 20140724: 1834 1835The ACPI 5.1 specification has been released and is available at: 1836http://uefi.org/specs/access 1837 1838 18390) ACPI 5.1 support in ACPICA: 1840 1841ACPI 5.1 is fully supported in ACPICA as of this release. 1842 1843New predefined names. Support includes iASL and runtime ACPICA 1844validation. 1845 _CCA (Cache Coherency Attribute). 1846 _DSD (Device-Specific Data). David Box. 1847 1848Modifications to existing ACPI tables. Support includes headers, iASL 1849Data Table compiler, disassembler, and the template generator. 1850 FADT - New fields and flags. Graeme Gregory. 1851 GTDT - One new subtable and new fields. Tomasz Nowicki. 1852 MADT - Two new subtables. Tomasz Nowicki. 1853 PCCT - One new subtable. 1854 1855Miscellaneous. 1856 New notification type for System Resource Affinity change events. 1857 1858 18591) ACPICA kernel-resident subsystem: 1860 1861Fixed a regression introduced in 20140627 where a fault can happen during 1862the deletion of Alias AML namespace objects. The problem affected both 1863the core ACPICA and the ACPICA tools including iASL and AcpiExec. 1864 1865Implemented a new GPE public interface, AcpiMarkGpeForWake. Provides a 1866simple mechanism to enable wake GPEs that have no associated handler or 1867control method. Rafael Wysocki. 1868 1869Updated the AcpiEnableGpe interface to disallow the enable if there is no 1870handler or control method associated with the particular GPE. This will 1871help avoid meaningless GPEs and even GPE floods. Rafael Wysocki. 1872 1873Updated GPE handling and dispatch by disabling the GPE before clearing 1874the status bit for edge-triggered GPEs. Lv Zheng. 1875 1876Added Timer() support to the AML Debug object. The current timer value is 1877now displayed with each invocation of (Store to) the debug object to 1878enable simple generation of execution times for AML code (method 1879execution for example.) ACPICA BZ 1093. 1880 1881Example Code and Data Size: These are the sizes for the OS-independent 1882acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1883debug version of the code includes the debug output trace mechanism and 1884has a much larger code and data size. 1885 1886 Current Release: 1887 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total 1888 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total 1889 Previous Release: 1890 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total 1891 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total 1892 1893 18942) iASL Compiler/Disassembler and Tools: 1895 1896Fixed an issue with the recently added local printf implementation, 1897concerning width/precision specifiers that could cause incorrect output. 1898Lv Zheng. ACPICA BZ 1094. 1899 1900Disassembler: Added support to detect buffers that contain UUIDs and 1901disassemble them to an invocation of the ToUUID operator. Also emit 1902commented descriptions of known ACPI-related UUIDs. 1903 1904AcpiHelp: Added support to display known ACPI-related UUIDs. New option, 1905-u. Adds three new files. 1906 1907iASL: Update table compiler and disassembler for DMAR table changes that 1908were introduced in September 2013. With assistance by David Woodhouse. 1909 1910---------------------------------------- 191127 June 2014. Summary of changes for version 20140627: 1912 19131) ACPICA kernel-resident subsystem: 1914 1915Formatted Output: Implemented local versions of standard formatted output 1916utilities such as printf, etc. Over time, it has been discovered that 1917there are in fact many portability issues with printf, and the addition 1918of this feature will fix/prevent these issues once and for all. Some 1919known issues are summarized below: 1920 19211) Output of 64-bit values is not portable. For example, UINT64 is %ull 1922for the Linux kernel and is %uI64 for some MSVC versions. 19232) Invoking printf consistently in a manner that is portable across both 192432-bit and 64-bit platforms is difficult at best in many situations. 19253) The output format for pointers varies from system to system (leading 1926zeros especially), and leads to inconsistent output from ACPICA across 1927platforms. 19284) Certain platform-specific printf formats may conflict with ACPICA use. 19295) If there is no local C library available, ACPICA now has local support 1930for printf. 1931 1932-- To address these printf issues in a complete manner, ACPICA now 1933directly implements a small subset of printf format specifiers, only 1934those that it requires. Adds a new file, utilities/utprint.c. Lv Zheng. 1935 1936Implemented support for ACPICA generation within the EFI environment. 1937Initially, the AcpiDump utility is supported in the UEFI shell 1938environment. Lv Zheng. 1939 1940Added a new external interface, AcpiLogError, to improve ACPICA 1941portability. This allows the host to redirect error messages from the 1942ACPICA utilities. Lv Zheng. 1943 1944Added and deployed new OSL file I/O interfaces to improve ACPICA 1945portability: 1946 AcpiOsOpenFile 1947 AcpiOsCloseFile 1948 AcpiOsReadFile 1949 AcpiOsWriteFile 1950 AcpiOsGetFileOffset 1951 AcpiOsSetFileOffset 1952There are C library implementations of these functions in the new file 1953service_layers/oslibcfs.c -- however, the functions can be implemented by 1954the local host in any way necessary. Lv Zheng. 1955 1956Implemented a mechanism to disable/enable ACPI table checksum validation 1957at runtime. This can be useful when loading tables very early during OS 1958initialization when it may not be possible to map the entire table in 1959order to compute the checksum. Lv Zheng. 1960 1961Fixed a buffer allocation issue for the Generic Serial Bus support. 1962Originally, a fixed buffer length was used. This change allows for 1963variable-length buffers based upon the protocol indicated by the field 1964access attributes. Reported by Lan Tianyu. Lv Zheng. 1965 1966Fixed a problem where an object detached from a namespace node was not 1967properly terminated/cleared and could cause a circular list problem if 1968reattached. ACPICA BZ 1063. David Box. 1969 1970Fixed a possible recursive lock acquisition in hwregs.c. Rakib Mullick. 1971 1972Fixed a possible memory leak in an error return path within the function 1973AcpiUtCopyIobjectToIobject. ACPICA BZ 1087. Colin Ian King. 1974 1975Example Code and Data Size: These are the sizes for the OS-independent 1976acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1977debug version of the code includes the debug output trace mechanism and 1978has a much larger code and data size. 1979 1980 Current Release: 1981 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total 1982 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total 1983 Previous Release: 1984 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total 1985 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total 1986 1987 19882) iASL Compiler/Disassembler and Tools: 1989 1990Disassembler: Add dump of ASCII equivalent text within a comment at the 1991end of each line of the output for the Buffer() ASL operator. 1992 1993AcpiDump: Miscellaneous changes: 1994 Fixed repetitive table dump in -n mode. 1995 For older EFI platforms, use the ACPI 1.0 GUID during RSDP search if 1996the ACPI 2.0 GUID fails. 1997 1998iASL: Fixed a problem where the compiler could fault if incorrectly given 1999an acpidump output file as input. ACPICA BZ 1088. David Box. 2000 2001AcpiExec/AcpiNames: Fixed a problem where these utilities could fault if 2002they are invoked without any arguments. 2003 2004Debugger: Fixed a possible memory leak in an error return path. ACPICA BZ 20051086. Colin Ian King. 2006 2007Disassembler: Cleaned up a block of code that extracts a parent Op 2008object. Added a comment that explains that the parent is guaranteed to be 2009valid in this case. ACPICA BZ 1069. 2010 2011 2012---------------------------------------- 201324 April 2014. Summary of changes for version 20140424: 2014 20151) ACPICA kernel-resident subsystem: 2016 2017Implemented support to skip/ignore NULL address entries in the RSDT/XSDT. 2018Some of these tables are known to contain a trailing NULL entry. Lv 2019Zheng. 2020 2021Removed an extraneous error message for the case where there are a large 2022number of system GPEs (> 124). This was the "32-bit FADT register is too 2023long to convert to GAS struct" message, which is irrelevant for GPEs 2024since the GPEx_BLK_LEN fields of the FADT are always used instead of the 2025(limited capacity) GAS bit length. Also, several changes to ensure proper 2026support for GPE numbers > 255, where some "GPE number" fields were 8-bits 2027internally. 2028 2029Implemented and deployed additional configuration support for the public 2030ACPICA external interfaces. Entire classes of interfaces can now be 2031easily modified or configured out, replaced by stubbed inline functions 2032by default. Lv Zheng. 2033 2034Moved all public ACPICA runtime configuration globals to the public 2035ACPICA external interface file for convenience. Also, removed some 2036obsolete/unused globals. See the file acpixf.h. Lv Zheng. 2037 2038Documentation: Added a new section to the ACPICA reference describing the 2039maximum number of GPEs that can be supported by the FADT-defined GPEs in 2040block zero and one. About 1200 total. See section 4.4.1 of the ACPICA 2041reference. 2042 2043Example Code and Data Size: These are the sizes for the OS-independent 2044acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2045debug version of the code includes the debug output trace mechanism and 2046has a much larger code and data size. 2047 2048 Current Release: 2049 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total 2050 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total 2051 Previous Release: 2052 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total 2053 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total 2054 2055 20562) iASL Compiler/Disassembler and Tools: 2057 2058iASL and disassembler: Add full support for the LPIT table (Low Power 2059Idle Table). Includes support in the disassembler, data table compiler, 2060and template generator. 2061 2062AcpiDump utility: 20631) Add option to force the use of the RSDT (over the XSDT). 20642) Improve validation of the RSDP signature (use 8 chars instead of 4). 2065 2066iASL: Add check for predefined packages that are too large. For 2067predefined names that contain subpackages, check if each subpackage is 2068too large. (Check for too small already exists.) 2069 2070Debugger: Updated the GPE command (which simulates a GPE by executing the 2071GPE code paths in ACPICA). The GPE device is now optional, and defaults 2072to the GPE 0/1 FADT-defined blocks. 2073 2074Unix application OSL: Update line-editing support. Add additional error 2075checking and take care not to reset terminal attributes on exit if they 2076were never set. This should help guarantee that the terminal is always 2077left in the previous state on program exit. 2078 2079 2080---------------------------------------- 208125 March 2014. Summary of changes for version 20140325: 2082 20831) ACPICA kernel-resident subsystem: 2084 2085Updated the auto-serialize feature for control methods. This feature 2086automatically serializes all methods that create named objects in order 2087to prevent runtime errors. The update adds support to ignore the 2088currently executing AML SyncLevel when invoking such a method, in order 2089to prevent disruption of any existing SyncLevel priorities that may exist 2090in the AML code. Although the use of SyncLevels is relatively rare, this 2091change fixes a regression where an AE_AML_MUTEX_ORDER exception can 2092appear on some machines starting with the 20140214 release. 2093 2094Added a new external interface to allow the host to install ACPI tables 2095very early, before the namespace is even created. AcpiInstallTable gives 2096the host additional flexibility for ACPI table management. Tables can be 2097installed directly by the host as if they had originally appeared in the 2098XSDT/RSDT. Installed tables can be SSDTs or other ACPI data tables 2099(anything except the DSDT and FACS). Adds a new file, tbdata.c, along 2100with additional internal restructuring and cleanup. See the ACPICA 2101Reference for interface details. Lv Zheng. 2102 2103Added validation of the checksum for all incoming dynamically loaded 2104tables (via external interfaces or via AML Load/LoadTable operators). Lv 2105Zheng. 2106 2107Updated the use of the AcpiOsWaitEventsComplete interface during Notify 2108and GPE handler removal. Restructured calls to eliminate possible race 2109conditions. Lv Zheng. 2110 2111Added a warning for the use/execution of the ASL/AML Unload (table) 2112operator. This will help detect and identify machines that use this 2113operator if and when it is ever used. This operator has never been seen 2114in the field and the usage model and possible side-effects of the drastic 2115runtime action of a full table removal are unknown. 2116 2117Reverted the use of #pragma push/pop which was introduced in the 20140214 2118release. It appears that push and pop are not implemented by enough 2119compilers to make the use of this feature feasible for ACPICA at this 2120time. However, these operators may be deployed in a future ACPICA 2121release. 2122 2123Added the missing EXPORT_SYMBOL macros for the install and remove SCI 2124handler interfaces. 2125 2126Source code generation: 21271) Disabled the use of the "strchr" macro for the gcc-specific 2128generation. For some versions of gcc, this macro can periodically expose 2129a compiler bug which in turn causes compile-time error(s). 21302) Added support for PPC64 compilation. Colin Ian King. 2131 2132Example Code and Data Size: These are the sizes for the OS-independent 2133acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2134debug version of the code includes the debug output trace mechanism and 2135has a much larger code and data size. 2136 2137 Current Release: 2138 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total 2139 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total 2140 Previous Release: 2141 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total 2142 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total 2143 2144 21452) iASL Compiler/Disassembler and Tools: 2146 2147Disassembler: Added several new features to improve the readability of 2148the resulting ASL code. Extra information is emitted within comment 2149fields in the ASL code: 21501) Known _HID/_CID values are decoded to descriptive text. 21512) Standard values for the Notify() operator are decoded to descriptive 2152text. 21533) Target operands are expanded to full pathnames (in a comment) when 2154possible. 2155 2156Disassembler: Miscellaneous updates for extern() handling: 21571) Abort compiler if file specified by -fe option does not exist. 21582) Silence unnecessary warnings about argument count mismatches. 21593) Update warning messages concerning unresolved method externals. 21604) Emit "UnknownObj" keyword for externals whose type cannot be 2161determined. 2162 2163AcpiHelp utility: 21641) Added the -a option to display both the ASL syntax and the AML 2165encoding for an input ASL operator. This effectively displays all known 2166information about an ASL operator with one AcpiHelp invocation. 21672) Added substring match support (similar to a wildcard) for the -i 2168(_HID/PNP IDs) option. 2169 2170iASL/Disassembler: Since this tool does not yet support execution on big- 2171endian machines, added detection of endianness and an error message if 2172execution is attempted on big-endian. Support for big-endian within iASL 2173is a feature that is on the ACPICA to-be-done list. 2174 2175AcpiBin utility: 21761) Remove option to extract binary files from an acpidump; this function 2177is made obsolete by the AcpiXtract utility. 21782) General cleanup of open files and allocated buffers. 2179 2180 2181---------------------------------------- 218214 February 2014. Summary of changes for version 20140214: 2183 21841) ACPICA kernel-resident subsystem: 2185 2186Implemented a new mechanism to proactively prevent problems with ill- 2187behaved reentrant control methods that create named ACPI objects. This 2188behavior is illegal as per the ACPI specification, but is nonetheless 2189frequently seen in the field. Previously, this could lead to an 2190AE_ALREADY_EXISTS exception if the method was actually entered by more 2191than one thread. This new mechanism detects such methods at table load 2192time and marks them "serialized" to prevent reentrancy. A new global 2193option, AcpiGbl_AutoSerializeMethods, has been added to disable this 2194feature if desired. This mechanism and global option obsoletes and 2195supersedes the previous AcpiGbl_SerializeAllMethods option. 2196 2197Added the "Windows 2013" string to the _OSI support. ACPICA will now 2198respond TRUE to _OSI queries with this string. It is the stated policy of 2199ACPICA to add new strings to the _OSI support as soon as possible after 2200they are defined. See the full ACPICA _OSI policy which has been added to 2201the utilities/utosi.c file. 2202 2203Hardened/updated the _PRT return value auto-repair code: 22041) Do not abort the repair on a single subpackage failure, continue to 2205check all subpackages. 22062) Add check for the minimum subpackage length (4). 22073) Properly handle extraneous NULL package elements. 2208 2209Added support to avoid the possibility of infinite loops when traversing 2210object linked lists. Never allow an infinite loop, even in the face of 2211corrupted object lists. 2212 2213ACPICA headers: Deployed the use of #pragma pack(push) and #pragma 2214pack(pop) directives to ensure that the ACPICA headers are independent of 2215compiler settings or other host headers. 2216 2217Example Code and Data Size: These are the sizes for the OS-independent 2218acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2219debug version of the code includes the debug output trace mechanism and 2220has a much larger code and data size. 2221 2222 Current Release: 2223 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total 2224 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total 2225 Previous Release: 2226 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total 2227 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total 2228 2229 22302) iASL Compiler/Disassembler and Tools: 2231 2232iASL/Table-compiler: Fixed a problem with support for the SPMI table. The 2233first reserved field was incorrectly forced to have a value of zero. This 2234change correctly forces the field to have a value of one. ACPICA BZ 1081. 2235 2236Debugger: Added missing support for the "Extra" and "Data" subobjects 2237when displaying object data. 2238 2239Debugger: Added support to display entire object linked lists when 2240displaying object data. 2241 2242iASL: Removed the obsolete -g option to obtain ACPI tables from the 2243Windows registry. This feature has been superseded by the acpidump 2244utility. 2245 2246 2247---------------------------------------- 224814 January 2014. Summary of changes for version 20140114: 2249 22501) ACPICA kernel-resident subsystem: 2251 2252Updated all ACPICA copyrights and signons to 2014. Added the 2014 2253copyright to all module headers and signons, including the standard Linux 2254header. This affects virtually every file in the ACPICA core subsystem, 2255iASL compiler, all ACPICA utilities, and the test suites. 2256 2257Improved parameter validation for AcpiInstallGpeBlock. Added the 2258following checks: 22591) The incoming device handle refers to type ACPI_TYPE_DEVICE. 22602) There is not already a GPE block attached to the device. 2261Likewise, with AcpiRemoveGpeBlock, ensure that the incoming object is a 2262device. 2263 2264Correctly support "references" in the ACPI_OBJECT. This change fixes the 2265support to allow references (namespace nodes) to be passed as arguments 2266to control methods via the evaluate object interface. This is probably 2267most useful for testing purposes, however. 2268 2269Improved support for 32/64 bit physical addresses in printf()-like 2270output. This change improves the support for physical addresses in printf 2271debug statements and other output on both 32-bit and 64-bit hosts. It 2272consistently outputs the appropriate number of bytes for each host. The 2273%p specifier is unsatisfactory since it does not emit uniform output on 2274all hosts/clib implementations (on some, leading zeros are not supported, 2275leading to difficult-to-read output). 2276 2277Example Code and Data Size: These are the sizes for the OS-independent 2278acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2279debug version of the code includes the debug output trace mechanism and 2280has a much larger code and data size. 2281 2282 Current Release: 2283 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total 2284 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total 2285 Previous Release: 2286 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total 2287 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total 2288 2289 22902) iASL Compiler/Disassembler and Tools: 2291 2292iASL: Fix a possible fault when using the Connection() operator. Fixes a 2293problem if the parent Field definition for the Connection operator refers 2294to an operation region that does not exist. ACPICA BZ 1064. 2295 2296AcpiExec: Load of local test tables is now optional. The utility has the 2297capability to load some various tables to test features of ACPICA. 2298However, there are enough of them that the output of the utility became 2299confusing. With this change, only the required local tables are displayed 2300(RSDP, XSDT, etc.) along with the actual tables loaded via the command 2301line specification. This makes the default output simler and easier to 2302understand. The -el command line option restores the original behavior 2303for testing purposes. 2304 2305AcpiExec: Added support for overlapping operation regions. This change 2306expands the simulation of operation regions by supporting regions that 2307overlap within the given address space. Supports SystemMemory and 2308SystemIO. ASLTS test suite updated also. David Box. ACPICA BZ 1031. 2309 2310AcpiExec: Added region handler support for PCI_Config and EC spaces. This 2311allows AcpiExec to simulate these address spaces, similar to the current 2312support for SystemMemory and SystemIO. 2313 2314Debugger: Added new command to read/write/compare all namespace objects. 2315The command "test objects" will exercise the entire namespace by writing 2316new values to each data object, and ensuring that the write was 2317successful. The original value is then restored and verified. 2318 2319Debugger: Added the "test predefined" command. This change makes this 2320test public and puts it under the new "test" command. The test executes 2321each and every predefined name within the current namespace. 2322 2323 2324---------------------------------------- 232518 December 2013. Summary of changes for version 20131218: 2326 2327Global note: The ACPI 5.0A specification was released this month. There 2328are no changes needed for ACPICA since this release of ACPI is an 2329errata/clarification release. The specification is available at 2330acpi.info. 2331 2332 23331) ACPICA kernel-resident subsystem: 2334 2335Added validation of the XSDT root table if it is present. Some older 2336platforms contain an XSDT that is ill-formed or otherwise invalid (such 2337as containing some or all entries that are NULL pointers). This change 2338adds a new function to validate the XSDT before actually using it. If the 2339XSDT is found to be invalid, ACPICA will now automatically fall back to 2340using the RSDT instead. Original implementation by Zhao Yakui. Ported to 2341ACPICA and enhanced by Lv Zheng and Bob Moore. 2342 2343Added a runtime option to ignore the XSDT and force the use of the RSDT. 2344This change adds a runtime option that will force ACPICA to use the RSDT 2345instead of the XSDT (AcpiGbl_DoNotUseXsdt). Although the ACPI spec 2346requires that an XSDT be used instead of the RSDT, the XSDT has been 2347found to be corrupt or ill-formed on some machines. Lv Zheng. 2348 2349Added a runtime option to favor 32-bit FADT register addresses over the 235064-bit addresses. This change adds an option to favor 32-bit FADT 2351addresses when there is a conflict between the 32-bit and 64-bit versions 2352of the same register. The default behavior is to use the 64-bit version 2353in accordance with the ACPI specification. This can now be overridden via 2354the AcpiGbl_Use32BitFadtAddresses flag. ACPICA BZ 885. Lv Zheng. 2355 2356During the change above, the internal "Convert FADT" and "Verify FADT" 2357functions have been merged to simplify the code, making it easier to 2358understand and maintain. ACPICA BZ 933. 2359 2360Improve exception reporting and handling for GPE block installation. 2361Return an actual status from AcpiEvGetGpeXruptBlock and don't clobber the 2362status when exiting AcpiEvInstallGpeBlock. ACPICA BZ 1019. 2363 2364Added helper macros to extract bus/segment numbers from the HEST table. 2365This change adds two macros to extract the encoded bus and segment 2366numbers from the HEST Bus field - ACPI_HEST_BUS and ACPI_HEST_SEGMENT. 2367Betty Dall <betty.dall@hp.com> 2368 2369Removed the unused ACPI_FREE_BUFFER macro. This macro is no longer used 2370by ACPICA. It is not a public macro, so it should have no effect on 2371existing OSV code. Lv Zheng. 2372 2373Example Code and Data Size: These are the sizes for the OS-independent 2374acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2375debug version of the code includes the debug output trace mechanism and 2376has a much larger code and data size. 2377 2378 Current Release: 2379 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total 2380 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total 2381 Previous Release: 2382 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total 2383 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total 2384 2385 23862) iASL Compiler/Disassembler and Tools: 2387 2388Disassembler: Improved pathname support for emitted External() 2389statements. This change adds full pathname support for external names 2390that have been resolved internally by the inclusion of additional ACPI 2391tables (via the iASL -e option). Without this change, the disassembler 2392can emit multiple externals for the same object, or it become confused 2393when the Scope() operator is used on an external object. Overall, greatly 2394improves the ability to actually recompile the emitted ASL code when 2395objects a referenced across multiple ACPI tables. Reported by Michael 2396Tsirkin (mst@redhat.com). 2397 2398Tests/ASLTS: Updated functional control suite to execute with no errors. 2399David Box. Fixed several errors related to the testing of the interpreter 2400slack mode. Lv Zheng. 2401 2402iASL: Added support to detect names that are declared within a control 2403method, but are unused (these are temporary names that are only valid 2404during the time the method is executing). A remark is issued for these 2405cases. ACPICA BZ 1022. 2406 2407iASL: Added full support for the DBG2 table. Adds full disassembler, 2408table compiler, and template generator support for the DBG2 table (Debug 2409Port 2 table). 2410 2411iASL: Added full support for the PCCT table, update the table definition. 2412Updates the PCCT table definition in the actbl3.h header and adds table 2413compiler and template generator support. 2414 2415iASL: Added an option to emit only error messages (no warnings/remarks). 2416The -ve option will enable only error messages, warnings and remarks are 2417suppressed. This can simplify debugging when only the errors are 2418important, such as when an ACPI table is disassembled and there are many 2419warnings and remarks -- but only the actual errors are of real interest. 2420 2421Example ACPICA code (source/tools/examples): Updated the example code so 2422that it builds to an actual working program, not just example code. Added 2423ACPI tables and execution of an example control method in the DSDT. Added 2424makefile support for Unix generation. 2425 2426 2427---------------------------------------- 242815 November 2013. Summary of changes for version 20131115: 2429 2430This release is available at https://acpica.org/downloads 2431 2432 24331) ACPICA kernel-resident subsystem: 2434 2435Resource Manager: Fixed loop termination for the "get AML length" 2436function. The loop previously had an error termination on a NULL resource 2437pointer, which can never happen since the loop simply increments a valid 2438resource pointer. This fix changes the loop to terminate with an error on 2439an invalid end-of-buffer condition. The problem can be seen as an 2440infinite loop by callers to AcpiSetCurrentResources with an invalid or 2441corrupted resource descriptor, or a resource descriptor that is missing 2442an END_TAG descriptor. Reported by Dan Carpenter 2443<dan.carpenter@oracle.com>. Lv Zheng, Bob Moore. 2444 2445Table unload and ACPICA termination: Delete all attached data objects 2446during namespace node deletion. This fix updates namespace node deletion 2447to delete the entire list of attached objects (attached via 2448AcpiAttachObject) instead of just one of the attached items. ACPICA BZ 24491024. Tomasz Nowicki (tomasz.nowicki@linaro.org). 2450 2451ACPICA termination: Added support to delete all objects attached to the 2452root namespace node. This fix deletes any and all objects that have been 2453attached to the root node via AcpiAttachData. Previously, none of these 2454objects were deleted. Reported by Tomasz Nowicki. ACPICA BZ 1026. 2455 2456Debug output: Do not emit the function nesting level for the in-kernel 2457build. The nesting level is really only useful during a single-thread 2458execution. Therefore, only enable this output for the AcpiExec utility. 2459Also, only emit the thread ID when executing under AcpiExec (Context 2460switches are still always detected and a message is emitted). ACPICA BZ 2461972. 2462 2463Example Code and Data Size: These are the sizes for the OS-independent 2464acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2465debug version of the code includes the debug output trace mechanism and 2466has a much larger code and data size. 2467 2468 Current Release: 2469 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total 2470 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total 2471 Previous Release: 2472 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total 2473 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total 2474 2475 24762) iASL Compiler/Disassembler and Tools: 2477 2478AcpiExec/Unix-OSL: Use <termios.h> instead of <termio.h>. This is the 2479correct portable POSIX header for terminal control functions. 2480 2481Disassembler: Fixed control method invocation issues related to the use 2482of the CondRefOf() operator. The problem is seen in the disassembly where 2483control method invocations may not be disassembled properly if the 2484control method name has been used previously as an argument to CondRefOf. 2485The solution is to not attempt to emit an external declaration for the 2486CondRefOf target (it is not necessary in the first place). This prevents 2487disassembler object type confusion. ACPICA BZ 988. 2488 2489Unix Makefiles: Added an option to disable compiler optimizations and the 2490_FORTIFY_SOURCE flag. Some older compilers have problems compiling ACPICA 2491with optimizations (reportedly, gcc 4.4 for example). This change adds a 2492command line option for make (NOOPT) that disables all compiler 2493optimizations and the _FORTIFY_SOURCE compiler flag. The default 2494optimization is -O2 with the _FORTIFY_SOURCE flag specified. ACPICA BZ 24951034. Lv Zheng, Bob Moore. 2496 2497Tests/ASLTS: Added options to specify individual test cases and modes. 2498This allows testers running aslts.sh to optionally specify individual 2499test modes and test cases. Also added an option to disable the forced 2500generation of the ACPICA tools from source if desired. Lv Zheng. 2501 2502---------------------------------------- 250327 September 2013. Summary of changes for version 20130927: 2504 2505This release is available at https://acpica.org/downloads 2506 2507 25081) ACPICA kernel-resident subsystem: 2509 2510Fixed a problem with store operations to reference objects. This change 2511fixes a problem where a Store operation to an ArgX object that contained 2512a 2513reference to a field object did not complete the automatic dereference 2514and 2515then write to the actual field object. Instead, the object type of the 2516field object was inadvertently changed to match the type of the source 2517operand. The new behavior will actually write to the field object (buffer 2518field or field unit), thus matching the correct ACPI-defined behavior. 2519 2520Implemented support to allow the host to redefine individual OSL 2521prototypes. This change enables the host to redefine OSL prototypes found 2522in the acpiosxf.h file. This allows the host to implement OSL interfaces 2523with a macro or inlined function. Further, it allows the host to add any 2524additional required modifiers such as __iomem, __init, __exit, etc., as 2525necessary on a per-interface basis. Enables maximum flexibility for the 2526OSL interfaces. Lv Zheng. 2527 2528Hardcoded the access width for the FADT-defined reset register. The ACPI 2529specification requires the reset register width to be 8 bits. ACPICA now 2530hardcodes the width to 8 and ignores the FADT width value. This provides 2531compatibility with other ACPI implementations that have allowed BIOS code 2532with bad register width values to go unnoticed. Matthew Garett, Bob 2533Moore, 2534Lv Zheng. 2535 2536Changed the position/use of the ACPI_PRINTF_LIKE macro. This macro is 2537used 2538in the OSL header (acpiosxf). The change modifies the position of this 2539macro in each instance where it is used (AcpiDebugPrint, etc.) to avoid 2540build issues if the OSL defines the implementation of the interface to be 2541an inline stub function. Lv Zheng. 2542 2543Deployed a new macro ACPI_EXPORT_SYMBOL_INIT for the main ACPICA 2544initialization interfaces. This change adds a new macro for the main init 2545and terminate external interfaces in order to support hosts that require 2546additional or different processing for these functions. Changed from 2547ACPI_EXPORT_SYMBOL to ACPI_EXPORT_SYMBOL_INIT for these functions. Lv 2548Zheng, Bob Moore. 2549 2550Cleaned up the memory allocation macros for configurability. In the 2551common 2552case, the ACPI_ALLOCATE and related macros now resolve directly to their 2553respective AcpiOs* OSL interfaces. Two options: 25541) The ACPI_ALLOCATE_ZEROED macro uses a simple local implementation by 2555default, unless overridden by the USE_NATIVE_ALLOCATE_ZEROED define. 25562) For AcpiExec (and for debugging), the macros can optionally be 2557resolved 2558to the local ACPICA interfaces that track each allocation (local tracking 2559is used to immediately detect memory leaks). 2560Lv Zheng. 2561 2562Simplified the configuration for ACPI_REDUCED_HARDWARE. Allows the kernel 2563to predefine this macro to either TRUE or FALSE during the system build. 2564 2565Replaced __FUNCTION_ with __func__ in the gcc-specific header. 2566 2567Example Code and Data Size: These are the sizes for the OS-independent 2568acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2569debug version of the code includes the debug output trace mechanism and 2570has a much larger code and data size. 2571 2572 Current Release: 2573 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total 2574 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total 2575 Previous Release: 2576 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total 2577 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total 2578 2579 25802) iASL Compiler/Disassembler and Tools: 2581 2582iASL: Implemented wildcard support for the -e option. This simplifies use 2583when there are many SSDTs that must be included to resolve external 2584method 2585declarations. ACPICA BZ 1041. Example: 2586 iasl -e ssdt*.dat -d dsdt.dat 2587 2588AcpiExec: Add history/line-editing for Unix/Linux systems. This change 2589adds a portable module that implements full history and limited line 2590editing for Unix and Linux systems. It does not use readline() due to 2591portability issues. Instead it uses the POSIX termio interface to put the 2592terminal in raw input mode so that the various special keys can be 2593trapped 2594(such as up/down-arrow for history support and left/right-arrow for line 2595editing). Uses the existing debugger history mechanism. ACPICA BZ 1036. 2596 2597AcpiXtract: Add support to handle (ignore) "empty" lines containing only 2598one or more spaces. This provides compatible with early or different 2599versions of the AcpiDump utility. ACPICA BZ 1044. 2600 2601AcpiDump: Do not ignore tables that contain only an ACPI table header. 2602Apparently, some BIOSs create SSDTs that contain an ACPI table header but 2603no other data. This change adds support to dump these tables. Any tables 2604shorter than the length of an ACPI table header remain in error (an error 2605message is emitted). Reported by Yi Li. 2606 2607Debugger: Echo actual command along with the "unknown command" message. 2608 2609---------------------------------------- 261023 August 2013. Summary of changes for version 20130823: 2611 26121) ACPICA kernel-resident subsystem: 2613 2614Implemented support for host-installed System Control Interrupt (SCI) 2615handlers. Certain ACPI functionality requires the host to handle raw 2616SCIs. For example, the "SCI Doorbell" that is defined for memory power 2617state support requires the host device driver to handle SCIs to examine 2618if the doorbell has been activated. Multiple SCI handlers can be 2619installed to allow for future expansion. New external interfaces are 2620AcpiInstallSciHandler, AcpiRemoveSciHandler; see the ACPICA reference for 2621details. Lv Zheng, Bob Moore. ACPICA BZ 1032. 2622 2623Operation region support: Never locally free the handler "context" 2624pointer. This change removes some dangerous code that attempts to free 2625the handler context pointer in some (rare) circumstances. The owner of 2626the handler owns this pointer and the ACPICA code should never touch it. 2627Although not seen to be an issue in any kernel, it did show up as a 2628problem (fault) under AcpiExec. Also, set the internal storage field for 2629the context pointer to zero when the region is deactivated, simply for 2630sanity. David Box. ACPICA BZ 1039. 2631 2632AcpiRead: On error, do not modify the return value target location. If an 2633error happens in the middle of a split 32/32 64-bit I/O operation, do not 2634modify the target of the return value pointer. Makes the code consistent 2635with the rest of ACPICA. Bjorn Helgaas. 2636 2637Example Code and Data Size: These are the sizes for the OS-independent 2638acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2639debug version of the code includes the debug output trace mechanism and 2640has a much larger code and data size. 2641 2642 Current Release: 2643 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total 2644 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total 2645 Previous Release: 2646 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total 2647 Debug Version: 185.4K Code, 77.1K Data, 262.5K Total 2648 2649 26502) iASL Compiler/Disassembler and Tools: 2651 2652AcpiDump: Implemented several new features and fixed some problems: 26531) Added support to dump the RSDP, RSDT, and XSDT tables. 26542) Added support for multiple table instances (SSDT, UEFI). 26553) Added option to dump "customized" (overridden) tables (-c). 26564) Fixed a problem where some table filenames were improperly 2657constructed. 26585) Improved some error messages, removed some unnecessary messages. 2659 2660iASL: Implemented additional support for disassembly of ACPI tables that 2661contain invocations of external control methods. The -fe<file> option 2662allows the import of a file that specifies the external methods along 2663with the required number of arguments for each -- allowing for the 2664correct disassembly of the table. This is a workaround for a limitation 2665of AML code where the disassembler often cannot determine the number of 2666arguments required for an external control method and generates incorrect 2667ASL code. See the iASL reference for details. ACPICA BZ 1030. 2668 2669Debugger: Implemented a new command (paths) that displays the full 2670pathnames (namepaths) and object types of all objects in the namespace. 2671This is an alternative to the namespace command. 2672 2673Debugger: Implemented a new command (sci) that invokes the SCI dispatch 2674mechanism and any installed handlers. 2675 2676iASL: Fixed a possible segfault for "too many parent prefixes" condition. 2677This can occur if there are too many parent prefixes in a namepath (for 2678example, ^^^^^^PCI0.ECRD). ACPICA BZ 1035. 2679 2680Application OSLs: Set the return value for the PCI read functions. These 2681functions simply return AE_OK, but should set the return value to zero 2682also. This change implements this. ACPICA BZ 1038. 2683 2684Debugger: Prevent possible command line buffer overflow. Increase the 2685size of a couple of the debugger line buffers, and ensure that overflow 2686cannot happen. ACPICA BZ 1037. 2687 2688iASL: Changed to abort immediately on serious errors during the parsing 2689phase. Due to the nature of ASL, there is no point in attempting to 2690compile these types of errors, and they typically end up causing a 2691cascade of hundreds of errors which obscure the original problem. 2692 2693---------------------------------------- 269425 July 2013. Summary of changes for version 20130725: 2695 26961) ACPICA kernel-resident subsystem: 2697 2698Fixed a problem with the DerefOf operator where references to FieldUnits 2699and BufferFields incorrectly returned the parent object, not the actual 2700value of the object. After this change, a dereference of a FieldUnit 2701reference results in a read operation on the field to get the value, and 2702likewise, the appropriate BufferField value is extracted from the target 2703buffer. 2704 2705Fixed a problem where the _WAK method could cause a fault under these 2706circumstances: 1) Interpreter slack mode was not enabled, and 2) the _WAK 2707method returned no value. The problem is rarely seen because most kernels 2708run ACPICA in slack mode. 2709 2710For the DerefOf operator, a fatal error now results if an attempt is made 2711to dereference a reference (created by the Index operator) to a NULL 2712package element. Provides compatibility with other ACPI implementations, 2713and this behavior will be added to a future version of the ACPI 2714specification. 2715 2716The ACPI Power Management Timer (defined in the FADT) is now optional. 2717This provides compatibility with other ACPI implementations and will 2718appear in the next version of the ACPI specification. If there is no PM 2719Timer on the platform, AcpiGetTimer returns AE_SUPPORT. An address of 2720zero in the FADT indicates no PM timer. 2721 2722Implemented a new interface for _OSI support, AcpiUpdateInterfaces. This 2723allows the host to globally enable/disable all vendor strings, all 2724feature strings, or both. Intended to be primarily used for debugging 2725purposes only. Lv Zheng. 2726 2727Expose the collected _OSI data to the host via a global variable. This 2728data tracks the highest level vendor ID that has been invoked by the BIOS 2729so that the host (and potentially ACPICA itself) can change behaviors 2730based upon the age of the BIOS. 2731 2732Example Code and Data Size: These are the sizes for the OS-independent 2733acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2734debug version of the code includes the debug output trace mechanism and 2735has a much larger code and data size. 2736 2737 Current Release: 2738 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total 2739 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total 2740 Previous Release: 2741 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total 2742 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total 2743 2744 27452) iASL Compiler/Disassembler and Tools: 2746 2747iASL: Created the following enhancements for the -so option (create 2748offset table): 27491)Add offsets for the last nameseg in each namepath for every supported 2750object type 27512)Add support for Processor, Device, Thermal Zone, and Scope objects 27523)Add the actual AML opcode for the parent object of every supported 2753object type 27544)Add support for the ZERO/ONE/ONES AML opcodes for integer objects 2755 2756Disassembler: Emit all unresolved external symbols in a single block. 2757These are external references to control methods that could not be 2758resolved, and thus, the disassembler had to make a guess at the number of 2759arguments to parse. 2760 2761iASL: The argument to the -T option (create table template) is now 2762optional. If not specified, the default table is a DSDT, typically the 2763most common case. 2764 2765---------------------------------------- 276626 June 2013. Summary of changes for version 20130626: 2767 27681) ACPICA kernel-resident subsystem: 2769 2770Fixed an issue with runtime repair of the _CST object. Null or invalid 2771elements were not always removed properly. Lv Zheng. 2772 2773Removed an arbitrary restriction of 256 GPEs per GPE block (such as the 2774FADT-defined GPE0 and GPE1). For GPE0, GPE1, and each GPE Block Device, 2775the maximum number of GPEs is 1016. Use of multiple GPE block devices 2776makes the system-wide number of GPEs essentially unlimited. 2777 2778Example Code and Data Size: These are the sizes for the OS-independent 2779acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2780debug version of the code includes the debug output trace mechanism and 2781has a much larger code and data size. 2782 2783 Current Release: 2784 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total 2785 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total 2786 Previous Release: 2787 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total 2788 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total 2789 2790 27912) iASL Compiler/Disassembler and Tools: 2792 2793Portable AcpiDump: Implemented full support for the Linux and FreeBSD 2794hosts. Now supports Linux, FreeBSD, and Windows. 2795 2796Disassembler: Added some missing types for the HEST and EINJ tables: "Set 2797Error Type With Address", "CMCI", "MCE", and "Flush Cacheline". 2798 2799iASL/Preprocessor: Implemented full support for nested 2800#if/#else/#elif/#endif blocks. Allows arbitrary depth of nested blocks. 2801 2802Disassembler: Expanded maximum output string length to 64K. Was 256 bytes 2803max. The original purpose of this constraint was to limit the amount of 2804debug output. However, the string function in question (UtPrintString) is 2805now used for the disassembler also, where 256 bytes is insufficient. 2806Reported by RehabMan@GitHub. 2807 2808iASL/DataTables: Fixed some problems and issues with compilation of DMAR 2809tables. ACPICA BZ 999. Lv Zheng. 2810 2811iASL: Fixed a couple of error exit issues that could result in a "Could 2812not delete <file>" message during ASL compilation. 2813 2814AcpiDump: Allow "FADT" and "MADT" as valid table signatures, even though 2815the actual signatures for these tables are "FACP" and "APIC", 2816respectively. 2817 2818AcpiDump: Added support for multiple UEFI tables. Only SSDT and UEFI 2819tables are allowed to have multiple instances. 2820 2821---------------------------------------- 282217 May 2013. Summary of changes for version 20130517: 2823 28241) ACPICA kernel-resident subsystem: 2825 2826Fixed a regression introduced in version 20130328 for _INI methods. This 2827change fixes a problem introduced in 20130328 where _INI methods are no 2828longer executed properly because of a memory block that was not 2829initialized correctly. ACPICA BZ 1016. Tomasz Nowicki 2830<tomasz.nowicki@linaro.org>. 2831 2832Fixed a possible problem with the new extended sleep registers in the 2833ACPI 28345.0 FADT. Do not use these registers (even if populated) unless the HW- 2835reduced bit is set in the FADT (as per the ACPI specification). ACPICA BZ 28361020. Lv Zheng. 2837 2838Implemented return value repair code for _CST predefined objects: Sort 2839the 2840list and detect/remove invalid entries. ACPICA BZ 890. Lv Zheng. 2841 2842Implemented a debug-only option to disable loading of SSDTs from the 2843RSDT/XSDT during ACPICA initialization. This can be useful for debugging 2844ACPI problems on some machines. Set AcpiGbl_DisableSsdtTableLoad in 2845acglobal.h - ACPICA BZ 1005. Lv Zheng. 2846 2847Fixed some issues in the ACPICA initialization and termination code: 2848Tomasz Nowicki <tomasz.nowicki@linaro.org> 28491) Clear events initialized flag upon event component termination. ACPICA 2850BZ 1013. 28512) Fixed a possible memory leak in GPE init error path. ACPICA BZ 1018. 28523) Delete global lock pending lock during termination. ACPICA BZ 1012. 28534) Clear debug buffer global on termination to prevent possible multiple 2854delete. ACPICA BZ 1010. 2855 2856Standardized all switch() blocks across the entire source base. After 2857many 2858years, different formatting for switch() had crept in. This change makes 2859the formatting of every switch block identical. ACPICA BZ 997. Chao Guan. 2860 2861Split some files to enhance ACPICA modularity and configurability: 28621) Split buffer dump routines into utilities/utbuffer.c 28632) Split internal error message routines into utilities/uterror.c 28643) Split table print utilities into tables/tbprint.c 28654) Split iASL command-line option processing into asloptions.c 2866 2867Makefile enhancements: 28681) Support for all new files above. 28692) Abort make on errors from any subcomponent. Chao Guan. 28703) Add build support for Apple Mac OS X. Liang Qi. 2871 2872Example Code and Data Size: These are the sizes for the OS-independent 2873acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2874debug version of the code includes the debug output trace mechanism and 2875has a much larger code and data size. 2876 2877 Current Release: 2878 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total 2879 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total 2880 Previous Release: 2881 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total 2882 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total 2883 2884 28852) iASL Compiler/Disassembler and Tools: 2886 2887New utility: Implemented an easily portable version of the acpidump 2888utility to extract ACPI tables from the system (or a file) in an ASCII 2889hex 2890dump format. The top-level code implements the various command line 2891options, file I/O, and table dump routines. To port to a new host, only 2892three functions need to be implemented to get tables -- since this 2893functionality is OS-dependent. See the tools/acpidump/apmain.c module and 2894the ACPICA reference for porting instructions. ACPICA BZ 859. Notes: 28951) The Windows version obtains the ACPI tables from the Registry. 28962) The Linux version is under development. 28973) Other hosts - If an OS-dependent module is submitted, it will be 2898distributed with ACPICA. 2899 2900iASL: Fixed a regression for -D preprocessor option (define symbol). A 2901restructuring/change to the initialization sequence caused this option to 2902no longer work properly. 2903 2904iASL: Implemented a mechanism to disable specific warnings and remarks. 2905Adds a new command line option, "-vw <messageid> as well as "#pragma 2906disable <messageid>". ACPICA BZ 989. Chao Guan, Bob Moore. 2907 2908iASL: Fix for too-strict package object validation. The package object 2909validation for return values from the predefined names is a bit too 2910strict, it does not allow names references within the package (which will 2911be resolved at runtime.) These types of references cannot be validated at 2912compile time. This change ignores named references within package objects 2913for names that return or define static packages. 2914 2915Debugger: Fixed the 80-character command line limitation for the History 2916command. Now allows lines of arbitrary length. ACPICA BZ 1000. Chao Guan. 2917 2918iASL: Added control method and package support for the -so option 2919(generates AML offset table for BIOS support.) 2920 2921iASL: issue a remark if a non-serialized method creates named objects. If 2922a thread blocks within the method for any reason, and another thread 2923enters the method, the method will fail because an attempt will be made 2924to 2925create the same (named) object twice. In this case, issue a remark that 2926the method should be marked serialized. NOTE: may become a warning later. 2927ACPICA BZ 909. 2928 2929---------------------------------------- 293018 April 2013. Summary of changes for version 20130418: 2931 29321) ACPICA kernel-resident subsystem: 2933 2934Fixed a possible buffer overrun during some rare but specific field unit 2935read operations. This overrun can only happen if the DSDT version is 1 -- 2936meaning that all AML integers are 32 bits -- and the field length is 2937between 33 and 55 bits long. During the read, an internal buffer object 2938is 2939created for the field unit because the field is larger than an integer 2940(32 2941bits). However, in this case, the buffer will be incorrectly written 2942beyond the end because the buffer length is less than the internal 2943minimum 2944of 64 bits (8 bytes) long. The buffer will be either 5, 6, or 7 bytes 2945long, but a full 8 bytes will be written. 2946 2947Updated the Embedded Controller "orphan" _REG method support. This refers 2948to _REG methods under the EC device that have no corresponding operation 2949region. This is allowed by the ACPI specification. This update removes a 2950dependency on the existence an ECDT table. It will execute an orphan _REG 2951method as long as the operation region handler for the EC is installed at 2952the EC device node and not the namespace root. Rui Zhang (original 2953update), Bob Moore (update/integrate). 2954 2955Implemented run-time argument typechecking for all predefined ACPI names 2956(_STA, _BIF, etc.) This change performs object typechecking on all 2957incoming arguments for all predefined names executed via 2958AcpiEvaluateObject. This ensures that ACPI-related device drivers are 2959passing correct object types as well as the correct number of arguments 2960(therefore identifying any issues immediately). Also, the ASL/namespace 2961definition of the predefined name is checked against the ACPI 2962specification for the proper argument count. Adds one new file, 2963nsarguments.c 2964 2965Changed an exception code for the ASL UnLoad() operator. Changed the 2966exception code for the case where the input DdbHandle is invalid, from 2967AE_BAD_PARAMETER to the more appropriate AE_AML_OPERAND_TYPE. 2968 2969Unix/Linux makefiles: Removed the use of the -O2 optimization flag in the 2970global makefile. The use of this flag causes compiler errors on earlier 2971versions of GCC, so it has been removed for compatibility. 2972 2973Miscellaneous cleanup: 29741) Removed some unused/obsolete macros 29752) Fixed a possible memory leak in the _OSI support 29763) Removed an unused variable in the predefined name support 29774) Windows OSL: remove obsolete reference to a memory list field 2978 2979Example Code and Data Size: These are the sizes for the OS-independent 2980acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2981debug version of the code includes the debug output trace mechanism and 2982has a much larger code and data size. 2983 2984 Current Release: 2985 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total 2986 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total 2987 Previous Release: 2988 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total 2989 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total 2990 2991 29922) iASL Compiler/Disassembler and Tools: 2993 2994AcpiExec: Added installation of a handler for the SystemCMOS address 2995space. This prevents control method abort if a method accesses this 2996space. 2997 2998AcpiExec: Added support for multiple EC devices, and now install EC 2999operation region handler(s) at the actual EC device instead of the 3000namespace root. This reflects the typical behavior of host operating 3001systems. 3002 3003AcpiExec: Updated to ensure that all operation region handlers are 3004installed before the _REG methods are executed. This prevents a _REG 3005method from aborting if it accesses an address space has no handler. 3006AcpiExec installs a handler for every possible address space. 3007 3008Debugger: Enhanced the "handlers" command to display non-root handlers. 3009This change enhances the handlers command to display handlers associated 3010with individual devices throughout the namespace, in addition to the 3011currently supported display of handlers associated with the root 3012namespace 3013node. 3014 3015ASL Test Suite: Several test suite errors have been identified and 3016resolved, reducing the total error count during execution. Chao Guan. 3017 3018---------------------------------------- 301928 March 2013. Summary of changes for version 20130328: 3020 30211) ACPICA kernel-resident subsystem: 3022 3023Fixed several possible race conditions with the internal object reference 3024counting mechanism. Some of the external ACPICA interfaces update object 3025reference counts without holding the interpreter or namespace lock. This 3026change adds a spinlock to protect reference count updates on the internal 3027ACPICA objects. Reported by and with assistance from Andriy Gapon 3028(avg@FreeBSD.org). 3029 3030FADT support: Removed an extraneous warning for very large GPE register 3031sets. This change removes a size mismatch warning if the legacy length 3032field for a GPE register set is larger than the 64-bit GAS structure can 3033accommodate. GPE register sets can be larger than the 255-bit width 3034limitation of the GAS structure. Linn Crosetto (linn@hp.com). 3035 3036_OSI Support: handle any errors from AcpiOsAcquireMutex. Check for error 3037return from this interface. Handles a possible timeout case if 3038ACPI_WAIT_FOREVER is modified by the host to be a value less than 3039"forever". Jung-uk Kim. 3040 3041Predefined name support: Add allowed/required argument type information 3042to 3043the master predefined info table. This change adds the infrastructure to 3044enable typechecking on incoming arguments for all predefined 3045methods/objects. It does not actually contain the code that will fully 3046utilize this information, this is still under development. Also condenses 3047some duplicate code for the predefined names into a new module, 3048utilities/utpredef.c 3049 3050Example Code and Data Size: These are the sizes for the OS-independent 3051acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3052debug version of the code includes the debug output trace mechanism and 3053has a much larger code and data size. 3054 3055 Previous Release: 3056 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total 3057 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total 3058 Current Release: 3059 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total 3060 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total 3061 3062 30632) iASL Compiler/Disassembler and Tools: 3064 3065iASL: Implemented a new option to simplify the development of ACPI- 3066related 3067BIOS code. Adds support for a new "offset table" output file. The -so 3068option will create a C table containing the AML table offsets of various 3069named objects in the namespace so that BIOS code can modify them easily 3070at 3071boot time. This can simplify BIOS runtime code by eliminating expensive 3072searches for "magic values", enhancing boot times and adding greater 3073reliability. With assistance from Lee Hamel. 3074 3075iASL: Allow additional predefined names to return zero-length packages. 3076Now, all predefined names that are defined by the ACPI specification to 3077return a "variable-length package of packages" are allowed to return a 3078zero length top-level package. This allows the BIOS to tell the host that 3079the requested feature is not supported, and supports existing BIOS/ASL 3080code and practices. 3081 3082iASL: Changed the "result not used" warning to an error. This is the case 3083where an ASL operator is effectively a NOOP because the result of the 3084operation is not stored anywhere. For example: 3085 Add (4, Local0) 3086There is no target (missing 3rd argument), nor is the function return 3087value used. This is potentially a very serious problem -- since the code 3088was probably intended to do something, but for whatever reason, the value 3089was not stored. Therefore, this issue has been upgraded from a warning to 3090an error. 3091 3092AcpiHelp: Added allowable/required argument types to the predefined names 3093info display. This feature utilizes the recent update to the predefined 3094names table (above). 3095 3096---------------------------------------- 309714 February 2013. Summary of changes for version 20130214: 3098 30991) ACPICA Kernel-resident Subsystem: 3100 3101Fixed a possible regression on some hosts: Reinstated the safe return 3102macros (return_ACPI_STATUS, etc.) that ensure that the argument is 3103evaluated only once. Although these macros are not needed for the ACPICA 3104code itself, they are often used by ACPI-related host device drivers 3105where 3106the safe feature may be necessary. 3107 3108Fixed several issues related to the ACPI 5.0 reduced hardware support 3109(SOC): Now ensure that if the platform declares itself as hardware- 3110reduced 3111via the FADT, the following functions become NOOPs (and always return 3112AE_OK) because ACPI is always enabled by definition on these machines: 3113 AcpiEnable 3114 AcpiDisable 3115 AcpiHwGetMode 3116 AcpiHwSetMode 3117 3118Dynamic Object Repair: Implemented additional runtime repairs for 3119predefined name return values. Both of these repairs can simplify code in 3120the related device drivers that invoke these methods: 31211) For the _STR and _MLS names, automatically repair/convert an ASCII 3122string to a Unicode buffer. 31232) For the _CRS, _PRS, and _DMA names, return a resource descriptor with 3124a 3125lone end tag descriptor in the following cases: A Return(0) was executed, 3126a null buffer was returned, or no object at all was returned (non-slack 3127mode only). Adds a new file, nsconvert.c 3128ACPICA BZ 998. Bob Moore, Lv Zheng. 3129 3130Resource Manager: Added additional code to prevent possible infinite 3131loops 3132while traversing corrupted or ill-formed resource template buffers. Check 3133for zero-length resource descriptors in all code that loops through 3134resource templates (the length field is used to index through the 3135template). This change also hardens the external AcpiWalkResources and 3136AcpiWalkResourceBuffer interfaces. 3137 3138Local Cache Manager: Enhanced the main data structure to eliminate an 3139unnecessary mechanism to access the next object in the list. Actually 3140provides a small performance enhancement for hosts that use the local 3141ACPICA cache manager. Jung-uk Kim. 3142 3143Example Code and Data Size: These are the sizes for the OS-independent 3144acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3145debug version of the code includes the debug output trace mechanism and 3146has a much larger code and data size. 3147 3148 Previous Release: 3149 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total 3150 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total 3151 Current Release: 3152 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total 3153 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total 3154 3155 31562) iASL Compiler/Disassembler and Tools: 3157 3158iASL/Disassembler: Fixed several issues with the definition of the ACPI 31595.0 RASF table (RAS Feature Table). This change incorporates late changes 3160that were made to the ACPI 5.0 specification. 3161 3162iASL/Disassembler: Added full support for the following new ACPI tables: 3163 1) The MTMR table (MID Timer Table) 3164 2) The VRTC table (Virtual Real Time Clock Table). 3165Includes header file, disassembler, table compiler, and template support 3166for both tables. 3167 3168iASL: Implemented compile-time validation of package objects returned by 3169predefined names. This new feature validates static package objects 3170returned by the various predefined names defined to return packages. Both 3171object types and package lengths are validated, for both parent packages 3172and sub-packages, if any. The code is similar in structure and behavior 3173to 3174the runtime repair mechanism within the AML interpreter and uses the 3175existing predefined name information table. Adds a new file, aslprepkg.c. 3176ACPICA BZ 938. 3177 3178iASL: Implemented auto-detection of binary ACPI tables for disassembly. 3179This feature detects a binary file with a valid ACPI table header and 3180invokes the disassembler automatically. Eliminates the need to 3181specifically invoke the disassembler with the -d option. ACPICA BZ 862. 3182 3183iASL/Disassembler: Added several warnings for the case where there are 3184unresolved control methods during the disassembly. This can potentially 3185cause errors when the output file is compiled, because the disassembler 3186assumes zero method arguments in these cases (it cannot determine the 3187actual number of arguments without resolution/definition of the method). 3188 3189Debugger: Added support to display all resources with a single command. 3190Invocation of the resources command with no arguments will now display 3191all 3192resources within the current namespace. 3193 3194AcpiHelp: Added descriptive text for each ACPICA exception code displayed 3195via the -e option. 3196 3197---------------------------------------- 319817 January 2013. Summary of changes for version 20130117: 3199 32001) ACPICA Kernel-resident Subsystem: 3201 3202Updated the AcpiGetSleepTypeData interface: Allow the \_Sx methods to 3203return either 1 or 2 integers. Although the ACPI spec defines the \_Sx 3204objects to return a package containing one integer, most BIOS code 3205returns 3206two integers and the previous code reflects that. However, we also need 3207to 3208support BIOS code that actually implements to the ACPI spec, and this 3209change reflects this. 3210 3211Fixed two issues with the ACPI_DEBUG_PRINT macros: 32121) Added the ACPI_DO_WHILE macro to the main DEBUG_PRINT helper macro for 3213C compilers that require this support. 32142) Renamed the internal ACPI_DEBUG macro to ACPI_DO_DEBUG_PRINT since 3215ACPI_DEBUG is already used by many of the various hosts. 3216 3217Updated all ACPICA copyrights and signons to 2013. Added the 2013 3218copyright to all module headers and signons, including the standard Linux 3219header. This affects virtually every file in the ACPICA core subsystem, 3220iASL compiler, all ACPICA utilities, and the test suites. 3221 3222Example Code and Data Size: These are the sizes for the OS-independent 3223acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3224debug version of the code includes the debug output trace mechanism and 3225has a much larger code and data size. 3226 3227 Previous Release: 3228 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total 3229 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total 3230 Current Release: 3231 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total 3232 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total 3233 3234 32352) iASL Compiler/Disassembler and Tools: 3236 3237Generic Unix OSL: Use a buffer to eliminate multiple vfprintf()s and 3238prevent a possible fault on some hosts. Some C libraries modify the arg 3239pointer parameter to vfprintf making it difficult to call it twice in the 3240AcpiOsVprintf function. Use a local buffer to workaround this issue. This 3241does not affect the Windows OSL since the Win C library does not modify 3242the arg pointer. Chao Guan, Bob Moore. 3243 3244iASL: Fixed a possible infinite loop when the maximum error count is 3245reached. If an output file other than the .AML file is specified (such as 3246a listing file), and the maximum number of errors is reached, do not 3247attempt to flush data to the output file(s) as the compiler is aborting. 3248This can cause an infinite loop as the max error count code essentially 3249keeps calling itself. 3250 3251iASL/Disassembler: Added an option (-in) to ignore NOOP 3252opcodes/operators. 3253Implemented for both the compiler and the disassembler. Often, the NOOP 3254opcode is used as padding for packages that are changed dynamically by 3255the 3256BIOS. When disassembled and recompiled, these NOOPs will cause syntax 3257errors. This option causes the disassembler to ignore all NOOP opcodes 3258(0xA3), and it also causes the compiler to ignore all ASL source code 3259NOOP 3260statements as well. 3261 3262Debugger: Enhanced the Sleep command to execute all sleep states. This 3263change allows Sleep to be invoked with no arguments and causes the 3264debugger to execute all of the sleep states, 0-5, automatically. 3265 3266---------------------------------------- 326720 December 2012. Summary of changes for version 20121220: 3268 32691) ACPICA Kernel-resident Subsystem: 3270 3271Implemented a new interface, AcpiWalkResourceBuffer. This interface is an 3272alternate entry point for AcpiWalkResources and improves the usability of 3273the resource manager by accepting as input a buffer containing the output 3274of either a _CRS, _PRS, or _AEI method. The key functionality is that the 3275input buffer is not deleted by this interface so that it can be used by 3276the host later. See the ACPICA reference for details. 3277 3278Interpreter: Add a warning if a 64-bit constant appears in a 32-bit table 3279(DSDT version < 2). The constant will be truncated and this warning 3280reflects that behavior. 3281 3282Resource Manager: Add support for the new ACPI 5.0 wake bit in the IRQ, 3283ExtendedInterrupt, and GpioInt descriptors. This change adds support to 3284both get and set the new wake bit in these descriptors, separately from 3285the existing share bit. Reported by Aaron Lu. 3286 3287Interpreter: Fix Store() when an implicit conversion is not possible. For 3288example, in the cases such as a store of a string to an existing package 3289object, implement the store as a CopyObject(). This is a small departure 3290from the ACPI specification which states that the control method should 3291be 3292aborted in this case. However, the ASLTS suite depends on this behavior. 3293 3294Performance improvement for the various FUNCTION_TRACE and DEBUG_PRINT 3295macros: check if debug output is currently enabled as soon as possible to 3296minimize performance impact if debug is in fact not enabled. 3297 3298Source code restructuring: Cleanup to improve modularity. The following 3299new files have been added: dbconvert.c, evhandler.c, nsprepkg.c, 3300psopinfo.c, psobject.c, rsdumpinfo.c, utstring.c, and utownerid.c. 3301Associated makefiles and project files have been updated. 3302 3303Changed an exception code for LoadTable operator. For the case where one 3304of the input strings is too long, change the returned exception code from 3305AE_BAD_PARAMETER to AE_AML_STRING_LIMIT. 3306 3307Fixed a possible memory leak in dispatcher error path. On error, delete 3308the mutex object created during method mutex creation. Reported by 3309tim.gardner@canonical.com. 3310 3311Example Code and Data Size: These are the sizes for the OS-independent 3312acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3313debug version of the code includes the debug output trace mechanism and 3314has a much larger code and data size. 3315 3316 Previous Release: 3317 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total 3318 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 3319 Current Release: 3320 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total 3321 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total 3322 3323 33242) iASL Compiler/Disassembler and Tools: 3325 3326iASL: Disallow a method call as argument to the ObjectType ASL operator. 3327This change tracks an errata to the ACPI 5.0 document. The AML grammar 3328will not allow the interpreter to differentiate between a method and a 3329method invocation when these are used as an argument to the ObjectType 3330operator. The ACPI specification change is to disallow a method 3331invocation 3332(UserTerm) for the ObjectType operator. 3333 3334Finish support for the TPM2 and CSRT tables in the headers, table 3335compiler, and disassembler. 3336 3337Unix user-space OSL: Fix a problem with WaitSemaphore where the timeout 3338always expires immediately if the semaphore is not available. The 3339original 3340code was using a relative-time timeout, but sem_timedwait requires the 3341use 3342of an absolute time. 3343 3344iASL: Added a remark if the Timer() operator is used within a 32-bit 3345table. This operator returns a 64-bit time value that will be truncated 3346within a 32-bit table. 3347 3348iASL Source code restructuring: Cleanup to improve modularity. The 3349following new files have been added: aslhex.c, aslxref.c, aslnamesp.c, 3350aslmethod.c, and aslfileio.c. Associated makefiles and project files have 3351been updated. 3352 3353 3354---------------------------------------- 335514 November 2012. Summary of changes for version 20121114: 3356 33571) ACPICA Kernel-resident Subsystem: 3358 3359Implemented a performance enhancement for ACPI/AML Package objects. This 3360change greatly increases the performance of Package objects within the 3361interpreter. It changes the processing of reference counts for packages 3362by 3363optimizing for the most common case where the package sub-objects are 3364either Integers, Strings, or Buffers. Increases the overall performance 3365of 3366the ASLTS test suite by 1.5X (Increases the Slack Mode performance by 33672X.) 3368Chao Guan. ACPICA BZ 943. 3369 3370Implemented and deployed common macros to extract flag bits from resource 3371descriptors. Improves readability and maintainability of the code. Fixes 3372a 3373problem with the UART serial bus descriptor for the number of data bits 3374flags (was incorrectly 2 bits, should be 3). 3375 3376Enhanced the ACPI_GETx and ACPI_SETx macros. Improved the implementation 3377of the macros and changed the SETx macros to the style of (destination, 3378source). Also added ACPI_CASTx companion macros. Lv Zheng. 3379 3380Example Code and Data Size: These are the sizes for the OS-independent 3381acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3382debug version of the code includes the debug output trace mechanism and 3383has a much larger code and data size. 3384 3385 Previous Release: 3386 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total 3387 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 3388 Current Release: 3389 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total 3390 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 3391 3392 33932) iASL Compiler/Disassembler and Tools: 3394 3395Disassembler: Added the new ACPI 5.0 interrupt sharing flags. This change 3396adds the ShareAndWake and ExclusiveAndWake flags which were added to the 3397Irq, Interrupt, and Gpio resource descriptors in ACPI 5.0. ACPICA BZ 986. 3398 3399Disassembler: Fixed a problem with external declaration generation. Fixes 3400a problem where an incorrect pathname could be generated for an external 3401declaration if the original reference to the object includes leading 3402carats (^). ACPICA BZ 984. 3403 3404Debugger: Completed a major update for the Disassemble<method> command. 3405This command was out-of-date and did not properly disassemble control 3406methods that had any reasonable complexity. This fix brings the command 3407up 3408to the same level as the rest of the disassembler. Adds one new file, 3409dmdeferred.c, which is existing code that is now common with the main 3410disassembler and the debugger disassemble command. ACPICA MZ 978. 3411 3412iASL: Moved the parser entry prototype to avoid a duplicate declaration. 3413Newer versions of Bison emit this prototype, so moved the prototype out 3414of 3415the iASL header to where it is actually used in order to avoid a 3416duplicate 3417declaration. 3418 3419iASL/Tools: Standardized use of the stream I/O functions: 3420 1) Ensure check for I/O error after every fopen/fread/fwrite 3421 2) Ensure proper order of size/count arguments for fread/fwrite 3422 3) Use test of (Actual != Requested) after all fwrite, and most fread 3423 4) Standardize I/O error messages 3424Improves reliability and maintainability of the code. Bob Moore, Lv 3425Zheng. 3426ACPICA BZ 981. 3427 3428Disassembler: Prevent duplicate External() statements. During generation 3429of external statements, detect similar pathnames that are actually 3430duplicates such as these: 3431 External (\ABCD) 3432 External (ABCD) 3433Remove all leading '\' characters from pathnames during the external 3434statement generation so that duplicates will be detected and tossed. 3435ACPICA BZ 985. 3436 3437Tools: Replace low-level I/O with stream I/O functions. Replace 3438open/read/write/close with the stream I/O equivalents 3439fopen/fread/fwrite/fclose for portability and performance. Lv Zheng, Bob 3440Moore. 3441 3442AcpiBin: Fix for the dump-to-hex function. Now correctly output the table 3443name header so that AcpiXtract recognizes the output file/table. 3444 3445iASL: Remove obsolete -2 option flag. Originally intended to force the 3446compiler/disassembler into an ACPI 2.0 mode, this was never implemented 3447and the entire concept is now obsolete. 3448 3449---------------------------------------- 345018 October 2012. Summary of changes for version 20121018: 3451 3452 34531) ACPICA Kernel-resident Subsystem: 3454 3455Updated support for the ACPI 5.0 MPST table. Fixes some problems 3456introduced by late changes to the table as it was added to the ACPI 5.0 3457specification. Includes header, disassembler, and data table compiler 3458support as well as a new version of the MPST template. 3459 3460AcpiGetObjectInfo: Enhanced the device object support to include the ACPI 34615.0 _SUB method. Now calls _SUB in addition to the other PNP-related ID 3462methods: _HID, _CID, and _UID. 3463 3464Changed ACPI_DEVICE_ID to ACPI_PNP_DEVICE_ID. Also changed 3465ACPI_DEVICE_ID_LIST to ACPI_PNP_DEVICE_ID_LIST. These changes prevent 3466name collisions on hosts that reserve the *_DEVICE_ID (or *DeviceId) 3467names for their various drivers. Affects the AcpiGetObjectInfo external 3468interface, and other internal interfaces as well. 3469 3470Added and deployed a new macro for ACPI_NAME management: ACPI_MOVE_NAME. 3471This macro resolves to a simple 32-bit move of the 4-character ACPI_NAME 3472on machines that support non-aligned transfers. Optimizes for this case 3473rather than using a strncpy. With assistance from Zheng Lv. 3474 3475Resource Manager: Small fix for buffer size calculation. Fixed a one byte 3476error in the output buffer calculation. Feng Tang. ACPICA BZ 849. 3477 3478Added a new debug print message for AML mutex objects that are force- 3479released. At control method termination, any currently acquired mutex 3480objects are force-released. Adds a new debug-only message for each one 3481that is released. 3482 3483Audited/updated all ACPICA return macros and the function debug depth 3484counter: 1) Ensure that all functions that use the various TRACE macros 3485also use the appropriate ACPICA return macros. 2) Ensure that all normal 3486return statements surround the return expression (value) with parens to 3487ensure consistency across the ACPICA code base. Guan Chao, Tang Feng, 3488Zheng Lv, Bob Moore. ACPICA Bugzilla 972. 3489 3490Global source code changes/maintenance: All extra lines at the start and 3491end of each source file have been removed for consistency. Also, within 3492comments, all new sentences start with a single space instead of a double 3493space, again for consistency across the code base. 3494 3495Example Code and Data Size: These are the sizes for the OS-independent 3496acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3497debug version of the code includes the debug output trace mechanism and 3498has a much larger code and data size. 3499 3500 Previous Release: 3501 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total 3502 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total 3503 Current Release: 3504 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total 3505 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 3506 3507 35082) iASL Compiler/Disassembler and Tools: 3509 3510AcpiExec: Improved the algorithm used for memory leak/corruption 3511detection. Added some intelligence to the code that maintains the global 3512list of allocated memory. The list is now ordered by allocated memory 3513address, significantly improving performance. When running AcpiExec on 3514the ASLTS test suite, speed improvements of 3X to 5X are seen, depending 3515on the platform and/or the environment. Note, this performance 3516enhancement affects the AcpiExec utility only, not the kernel-resident 3517ACPICA code. 3518 3519Enhanced error reporting for invalid AML opcodes and bad ACPI_NAMEs. For 3520the disassembler, dump the 48 bytes surrounding the invalid opcode. Fix 3521incorrect table offset reported for invalid opcodes. Report the original 352232-bit value for bad ACPI_NAMEs (as well as the repaired name.) 3523 3524Disassembler: Enhanced the -vt option to emit the binary table data in 3525hex format to assist with debugging. 3526 3527Fixed a potential filename buffer overflow in osunixdir.c. Increased the 3528size of file structure. Colin Ian King. 3529 3530---------------------------------------- 353113 September 2012. Summary of changes for version 20120913: 3532 3533 35341) ACPICA Kernel-resident Subsystem: 3535 3536ACPI 5.0: Added two new notify types for the Hardware Error Notification 3537Structure within the Hardware Error Source Table (HEST) table -- CMCI(5) 3538and 3539MCE(6). 3540 3541Table Manager: Merged/removed duplicate code in the root table resize 3542functions. One function is external, the other is internal. Lv Zheng, 3543ACPICA 3544BZ 846. 3545 3546Makefiles: Completely removed the obsolete "Linux" makefiles under 3547acpica/generate/linux. These makefiles are obsolete and have been 3548replaced 3549by 3550the generic unix makefiles under acpica/generate/unix. 3551 3552Makefiles: Ensure that binary files always copied properly. Minor rule 3553change 3554to ensure that the final binary output files are always copied up to the 3555appropriate binary directory (bin32 or bin64.) 3556 3557Example Code and Data Size: These are the sizes for the OS-independent 3558acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3559debug 3560version of the code includes the debug output trace mechanism and has a 3561much 3562larger code and data size. 3563 3564 Previous Release: 3565 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total 3566 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total 3567 Current Release: 3568 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total 3569 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total 3570 3571 35722) iASL Compiler/Disassembler and Tools: 3573 3574Disassembler: Fixed a possible fault during the disassembly of resource 3575descriptors when a second parse is required because of the invocation of 3576external control methods within the table. With assistance from 3577adq@lidskialf.net. ACPICA BZ 976. 3578 3579iASL: Fixed a namepath optimization problem. An error can occur if the 3580parse 3581node that contains the namepath to be optimized does not have a parent 3582node 3583that is a named object. This change fixes the problem. 3584 3585iASL: Fixed a regression where the AML file is not deleted on errors. The 3586AML 3587output file should be deleted if there are any errors during the 3588compiler. 3589The 3590only exception is if the -f (force output) option is used. ACPICA BZ 974. 3591 3592iASL: Added a feature to automatically increase internal line buffer 3593sizes. 3594Via realloc(), automatically increase the internal line buffer sizes as 3595necessary to support very long source code lines. The current version of 3596the 3597preprocessor requires a buffer long enough to contain full source code 3598lines. 3599This change increases the line buffer(s) if the input lines go beyond the 3600current buffer size. This eliminates errors that occurred when a source 3601code 3602line was longer than the buffer. 3603 3604iASL: Fixed a problem with constant folding in method declarations. The 3605SyncLevel term is a ByteConstExpr, and incorrect code would be generated 3606if a 3607Type3 opcode was used. 3608 3609Debugger: Improved command help support. For incorrect argument count, 3610display 3611full help for the command. For help command itself, allow an argument to 3612specify a command. 3613 3614Test Suites: Several bug fixes for the ASLTS suite reduces the number of 3615errors during execution of the suite. Guan Chao. 3616 3617---------------------------------------- 361816 August 2012. Summary of changes for version 20120816: 3619 3620 36211) ACPICA Kernel-resident Subsystem: 3622 3623Removed all use of the deprecated _GTS and _BFS predefined methods. The 3624_GTS 3625(Going To Sleep) and _BFS (Back From Sleep) methods are essentially 3626deprecated and will probably be removed from the ACPI specification. 3627Windows 3628does not invoke them, and reportedly never will. The final nail in the 3629coffin 3630is that the ACPI specification states that these methods must be run with 3631interrupts off, which is not going to happen in a kernel interpreter. 3632Note: 3633Linux has removed all use of the methods also. It was discovered that 3634invoking these functions caused failures on some machines, probably 3635because 3636they were never tested since Windows does not call them. Affects two 3637external 3638interfaces, AcpiEnterSleepState and AcpiLeaveSleepStatePrep. Tang Feng. 3639ACPICA BZ 969. 3640 3641Implemented support for complex bit-packed buffers returned from the _PLD 3642(Physical Location of Device) predefined method. Adds a new external 3643interface, AcpiDecodePldBuffer that parses the buffer into a more usable 3644C 3645structure. Note: C Bitfields cannot be used for this type of predefined 3646structure since the memory layout of individual bitfields is not defined 3647by 3648the C language. In addition, there are endian concerns where a compiler 3649will 3650change the bitfield ordering based on the machine type. The new ACPICA 3651interface eliminates these issues, and should be called after _PLD is 3652executed. ACPICA BZ 954. 3653 3654Implemented a change to allow a scope change to root (via "Scope (\)") 3655during 3656execution of module-level ASL code (code that is executed at table load 3657time.) Lin Ming. 3658 3659Added the Windows8/Server2012 string for the _OSI method. This change 3660adds 3661a 3662new _OSI string, "Windows 2012" for both Windows 8 and Windows Server 36632012. 3664 3665Added header support for the new ACPI tables DBG2 (Debug Port Table Type 36662) 3667and CSRT (Core System Resource Table). 3668 3669Added struct header support for the _FDE, _GRT, _GTM, and _SRT predefined 3670names. This simplifies access to the buffers returned by these predefined 3671names. Adds a new file, include/acbuffer.h. ACPICA BZ 956. 3672 3673GPE support: Removed an extraneous parameter from the various low-level 3674internal GPE functions. Tang Feng. 3675 3676Removed the linux makefiles from the unix packages. The generate/linux 3677makefiles are obsolete and have been removed from the unix tarball 3678release 3679packages. The replacement makefiles are under generate/unix, and there is 3680a 3681top-level makefile under the main acpica directory. ACPICA BZ 967, 912. 3682 3683Updates for Unix makefiles: 36841) Add -D_FORTIFY_SOURCE=2 for gcc generation. Arjan van de Ven. 36852) Update linker flags (move to end of command line) for AcpiExec 3686utility. 3687Guan Chao. 3688 3689Split ACPICA initialization functions to new file, utxfinit.c. Split from 3690utxface.c to improve modularity and reduce file size. 3691 3692Example Code and Data Size: These are the sizes for the OS-independent 3693acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3694debug version of the code includes the debug output trace mechanism and 3695has a 3696much larger code and data size. 3697 3698 Previous Release: 3699 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total 3700 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total 3701 Current Release: 3702 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total 3703 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total 3704 3705 37062) iASL Compiler/Disassembler and Tools: 3707 3708iASL: Fixed a problem with constant folding for fixed-length constant 3709expressions. The constant-folding code was not being invoked for constant 3710expressions that allow the use of type 3/4/5 opcodes to generate 3711constants 3712for expressions such as ByteConstExpr, WordConstExpr, etc. This could 3713result 3714in the generation of invalid AML bytecode. ACPICA BZ 970. 3715 3716iASL: Fixed a generation issue on newer versions of Bison. Newer versions 3717apparently automatically emit some of the necessary externals. This 3718change 3719handles these versions in order to eliminate generation warnings. 3720 3721Disassembler: Added support to decode the DBG2 and CSRT ACPI tables. 3722 3723Disassembler: Add support to decode _PLD buffers. The decoded buffer 3724appears 3725within comments in the output file. 3726 3727Debugger: Fixed a regression with the "Threads" command where 3728AE_BAD_PARAMETER was always returned. 3729 3730---------------------------------------- 373111 July 2012. Summary of changes for version 20120711: 3732 37331) ACPICA Kernel-resident Subsystem: 3734 3735Fixed a possible fault in the return package object repair code. Fixes a 3736problem that can occur when a lone package object is wrapped with an 3737outer 3738package object in order to force conformance to the ACPI specification. 3739Can 3740affect these predefined names: _ALR, _MLS, _PSS, _TRT, _TSS, _PRT, _HPX, 3741_DLM, 3742_CSD, _PSD, _TSD. 3743 3744Removed code to disable/enable bus master arbitration (ARB_DIS bit in the 3745PM2_CNT register) in the ACPICA sleep/wake interfaces. Management of the 3746ARB_DIS bit must be implemented in the host-dependent C3 processor power 3747state 3748support. Note, ARB_DIS is obsolete and only applies to older chipsets, 3749both 3750Intel and other vendors. (for Intel: ICH4-M and earlier) 3751 3752This change removes the code to disable/enable bus master arbitration 3753during 3754suspend/resume. Use of the ARB_DIS bit in the optional PM2_CNT register 3755causes 3756resume problems on some machines. The change has been in use for over 3757seven 3758years within Linux. 3759 3760Implemented two new external interfaces to support host-directed dynamic 3761ACPI 3762table load and unload. They are intended to simplify the host 3763implementation 3764of hot-plug support: 3765 AcpiLoadTable: Load an SSDT from a buffer into the namespace. 3766 AcpiUnloadParentTable: Unload an SSDT via a named object owned by the 3767table. 3768See the ACPICA reference for additional details. Adds one new file, 3769components/tables/tbxfload.c 3770 3771Implemented and deployed two new interfaces for errors and warnings that 3772are 3773known to be caused by BIOS/firmware issues: 3774 AcpiBiosError: Prints "ACPI Firmware Error" message. 3775 AcpiBiosWarning: Prints "ACPI Firmware Warning" message. 3776Deployed these new interfaces in the ACPICA Table Manager code for ACPI 3777table 3778and FADT errors. Additional deployment to be completed as appropriate in 3779the 3780future. The associated conditional macros are ACPI_BIOS_ERROR and 3781ACPI_BIOS_WARNING. See the ACPICA reference for additional details. 3782ACPICA 3783BZ 3784843. 3785 3786Implicit notify support: ensure that no memory allocation occurs within a 3787critical region. This fix moves a memory allocation outside of the time 3788that a 3789spinlock is held. Fixes issues on systems that do not allow this 3790behavior. 3791Jung-uk Kim. 3792 3793Split exception code utilities and tables into a new file, 3794utilities/utexcep.c 3795 3796Example Code and Data Size: These are the sizes for the OS-independent 3797acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3798debug 3799version of the code includes the debug output trace mechanism and has a 3800much 3801larger code and data size. 3802 3803 Previous Release: 3804 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total 3805 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total 3806 Current Release: 3807 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total 3808 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total 3809 3810 38112) iASL Compiler/Disassembler and Tools: 3812 3813iASL: Fixed a parser problem for hosts where EOF is defined as -1 instead 3814of 38150. Jung-uk Kim. 3816 3817Debugger: Enhanced the "tables" command to emit additional information 3818about 3819the current set of ACPI tables, including the owner ID and flags decode. 3820 3821Debugger: Reimplemented the "unload" command to use the new 3822AcpiUnloadParentTable external interface. This command was disable 3823previously 3824due to need for an unload interface. 3825 3826AcpiHelp: Added a new option to decode ACPICA exception codes. The -e 3827option 3828will decode 16-bit hex status codes (ACPI_STATUS) to name strings. 3829 3830---------------------------------------- 383120 June 2012. Summary of changes for version 20120620: 3832 3833 38341) ACPICA Kernel-resident Subsystem: 3835 3836Implemented support to expand the "implicit notify" feature to allow 3837multiple 3838devices to be notified by a single GPE. This feature automatically 3839generates a 3840runtime device notification in the absence of a BIOS-provided GPE control 3841method (_Lxx/_Exx) or a host-installed handler for the GPE. Implicit 3842notify is 3843provided by ACPICA for Windows compatibility, and is a workaround for 3844BIOS 3845AML 3846code errors. See the description of the AcpiSetupGpeForWake interface in 3847the 3848APCICA reference. Bob Moore, Rafael Wysocki. ACPICA BZ 918. 3849 3850Changed some comments and internal function names to simplify and ensure 3851correctness of the Linux code translation. No functional changes. 3852 3853Example Code and Data Size: These are the sizes for the OS-independent 3854acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3855debug 3856version of the code includes the debug output trace mechanism and has a 3857much 3858larger code and data size. 3859 3860 Previous Release: 3861 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total 3862 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total 3863 Current Release: 3864 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total 3865 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total 3866 3867 38682) iASL Compiler/Disassembler and Tools: 3869 3870Disassembler: Added support to emit short, commented descriptions for the 3871ACPI 3872predefined names in order to improve the readability of the disassembled 3873output. ACPICA BZ 959. Changes include: 3874 1) Emit descriptions for all standard predefined names (_INI, _STA, 3875_PRW, 3876etc.) 3877 2) Emit generic descriptions for the special names (_Exx, _Qxx, etc.) 3878 3) Emit descriptions for the resource descriptor names (_MIN, _LEN, 3879etc.) 3880 3881AcpiSrc: Fixed several long-standing Linux code translation issues. 3882Argument 3883descriptions in function headers are now translated properly to lower 3884case 3885and 3886underscores. ACPICA BZ 961. Also fixes translation problems such as 3887these: 3888(old -> new) 3889 i_aSL -> iASL 3890 00-7_f -> 00-7F 3891 16_k -> 16K 3892 local_fADT -> local_FADT 3893 execute_oSI -> execute_OSI 3894 3895iASL: Fixed a problem where null bytes were inadvertently emitted into 3896some 3897listing files. 3898 3899iASL: Added the existing debug options to the standard help screen. There 3900are 3901no longer two different help screens. ACPICA BZ 957. 3902 3903AcpiHelp: Fixed some typos in the various predefined name descriptions. 3904Also 3905expand some of the descriptions where appropriate. 3906 3907iASL: Fixed the -ot option (display compile times/statistics). Was not 3908working 3909properly for standard output; only worked for the debug file case. 3910 3911---------------------------------------- 391218 May 2012. Summary of changes for version 20120518: 3913 3914 39151) ACPICA Core Subsystem: 3916 3917Added a new OSL interface, AcpiOsWaitEventsComplete. This interface is 3918defined 3919to block until asynchronous events such as notifies and GPEs have 3920completed. 3921Within ACPICA, it is only called before a notify or GPE handler is 3922removed/uninstalled. It also may be useful for the host OS within related 3923drivers such as the Embedded Controller driver. See the ACPICA reference 3924for 3925additional information. ACPICA BZ 868. 3926 3927ACPI Tables: Added a new error message for a possible overflow failure 3928during 3929the conversion of FADT 32-bit legacy register addresses to internal 3930common 393164- 3932bit GAS structure representation. The GAS has a one-byte "bit length" 3933field, 3934thus limiting the register length to 255 bits. ACPICA BZ 953. 3935 3936Example Code and Data Size: These are the sizes for the OS-independent 3937acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3938debug 3939version of the code includes the debug output trace mechanism and has a 3940much 3941larger code and data size. 3942 3943 Previous Release: 3944 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 3945 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total 3946 Current Release: 3947 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total 3948 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total 3949 3950 39512) iASL Compiler/Disassembler and Tools: 3952 3953iASL: Added the ACPI 5.0 "PCC" keyword for use in the Register() ASL 3954macro. 3955This keyword was added late in the ACPI 5.0 release cycle and was not 3956implemented until now. 3957 3958Disassembler: Added support for Operation Region externals. Adds missing 3959support for operation regions that are defined in another table, and 3960referenced locally via a Field or BankField ASL operator. Now generates 3961the 3962correct External statement. 3963 3964Disassembler: Several additional fixes for the External() statement 3965generation 3966related to some ASL operators. Also, order the External() statements 3967alphabetically in the disassembler output. Fixes the External() 3968generation 3969for 3970the Create* field, Alias, and Scope operators: 3971 1) Create* buffer field operators - fix type mismatch warning on 3972disassembly 3973 2) Alias - implement missing External support 3974 3) Scope - fix to make sure all necessary externals are emitted. 3975 3976iASL: Improved pathname support. For include files, merge the prefix 3977pathname 3978with the file pathname and eliminate unnecessary components. Convert 3979backslashes in all pathnames to forward slashes, for readability. Include 3980file 3981pathname changes affect both #include and Include() type operators. 3982 3983iASL/DTC/Preprocessor: Gracefully handle early EOF. Handle an EOF at the 3984end 3985of a valid line by inserting a newline and then returning the EOF during 3986the 3987next call to GetNextLine. Prevents the line from being ignored due to EOF 3988condition. 3989 3990iASL: Implemented some changes to enhance the IDE support (-vi option.) 3991Error 3992and Warning messages are now correctly recognized for both the source 3993code 3994browser and the global error and warning counts. 3995 3996---------------------------------------- 399720 April 2012. Summary of changes for version 20120420: 3998 3999 40001) ACPICA Core Subsystem: 4001 4002Implemented support for multiple notify handlers. This change adds 4003support 4004to 4005allow multiple system and device notify handlers on Device, Thermal Zone, 4006and 4007Processor objects. This can simplify the host OS notification 4008implementation. 4009Also re-worked and restructured the entire notify support code to 4010simplify 4011handler installation, handler removal, notify event queuing, and notify 4012dispatch to handler(s). Note: there can still only be two global notify 4013handlers - one for system notifies and one for device notifies. There are 4014no 4015changes to the existing handler install/remove interfaces. Lin Ming, Bob 4016Moore, Rafael Wysocki. 4017 4018Fixed a regression in the package repair code where the object reference 4019count was calculated incorrectly. Regression was introduced in the commit 4020"Support to add Package wrappers". 4021 4022Fixed a couple possible memory leaks in the AML parser, in the error 4023recovery 4024path. Jesper Juhl, Lin Ming. 4025 4026Example Code and Data Size: These are the sizes for the OS-independent 4027acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4028debug version of the code includes the debug output trace mechanism and 4029has a 4030much larger code and data size. 4031 4032 Previous Release: 4033 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 4034 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 4035 Current Release: 4036 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 4037 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total 4038 4039 40402) iASL Compiler/Disassembler and Tools: 4041 4042iASL: Fixed a problem with the resource descriptor support where the 4043length 4044of the StartDependentFn and StartDependentFnNoPrio descriptors were not 4045included in cumulative descriptor offset, resulting in incorrect values 4046for 4047resource tags within resource descriptors appearing after a 4048StartDependent* 4049descriptor. Reported by Petr Vandrovec. ACPICA BZ 949. 4050 4051iASL and Preprocessor: Implemented full support for the #line directive 4052to 4053correctly track original source file line numbers through the .i 4054preprocessor 4055output file - for error and warning messages. 4056 4057iASL: Expand the allowable byte constants for address space IDs. 4058Previously, 4059the allowable range was 0x80-0xFF (user-defined spaces), now the range is 40600x0A-0xFF to allow for custom and new IDs without changing the compiler. 4061 4062iASL: Add option to treat all warnings as errors (-we). ACPICA BZ 948. 4063 4064iASL: Add option to completely disable the preprocessor (-Pn). 4065 4066iASL: Now emit all error/warning messages to standard error (stderr) by 4067default (instead of the previous stdout). 4068 4069ASL Test Suite (ASLTS): Reduce iASL warnings due to use of Switch(). 4070Update 4071for resource descriptor offset fix above. Update/cleanup error output 4072routines. Enable and send iASL errors/warnings to an error logfile 4073(error.txt). Send all other iASL output to a logfile (compiler.txt). 4074Fixed 4075several extraneous "unrecognized operator" messages. 4076 4077---------------------------------------- 407820 March 2012. Summary of changes for version 20120320: 4079 4080 40811) ACPICA Core Subsystem: 4082 4083Enhanced the sleep/wake interfaces to optionally execute the _GTS method 4084(Going To Sleep) and the _BFS method (Back From Sleep). Windows 4085apparently 4086does not execute these methods, and therefore these methods are often 4087untested. It has been seen on some systems where the execution of these 4088methods causes errors and also prevents the machine from entering S5. It 4089is 4090therefore suggested that host operating systems do not execute these 4091methods 4092by default. In the future, perhaps these methods can be optionally 4093executed 4094based on the age of the system and/or what is the newest version of 4095Windows 4096that the BIOS asks for via _OSI. Changed interfaces: AcpiEnterSleepState 4097and 4098AcpileaveSleepStatePrep. See the ACPICA reference and Linux BZ 13041. Lin 4099Ming. 4100 4101Fixed a problem where the length of the local/common FADT was set too 4102early. 4103The local FADT table length cannot be set to the common length until the 4104original length has been examined. There is code that checks the table 4105length 4106and sets various fields appropriately. This can affect older machines 4107with 4108early FADT versions. For example, this can cause inadvertent writes to 4109the 4110CST_CNT register. Julian Anastasov. 4111 4112Fixed a mapping issue related to a physical table override. Use the 4113deferred 4114mapping mechanism for tables loaded via the physical override OSL 4115interface. 4116This allows for early mapping before the virtual memory manager is 4117available. 4118Thomas Renninger, Bob Moore. 4119 4120Enhanced the automatic return-object repair code: Repair a common problem 4121with 4122predefined methods that are defined to return a variable-length Package 4123of 4124sub-objects. If there is only one sub-object, some BIOS ASL code 4125mistakenly 4126simply returns the single object instead of a Package with one sub- 4127object. 4128This new support will repair this error by wrapping a Package object 4129around 4130the original object, creating the correct and expected Package with one 4131sub- 4132object. Names that can be repaired in this manner include: _ALR, _CSD, 4133_HPX, 4134_MLS, _PLD, _PRT, _PSS, _TRT, _TSS, _BCL, _DOD, _FIX, and _Sx. ACPICA BZ 4135939. 4136 4137Changed the exception code returned for invalid ACPI paths passed as 4138parameters to external interfaces such as AcpiEvaluateObject. Was 4139AE_BAD_PARAMETER, now is the more sensible AE_BAD_PATHNAME. 4140 4141Example Code and Data Size: These are the sizes for the OS-independent 4142acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4143debug 4144version of the code includes the debug output trace mechanism and has a 4145much 4146larger code and data size. 4147 4148 Previous Release: 4149 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total 4150 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 4151 Current Release: 4152 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 4153 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 4154 4155 41562) iASL Compiler/Disassembler and Tools: 4157 4158iASL: Added the infrastructure and initial implementation of a integrated 4159C- 4160like preprocessor. This will simplify BIOS development process by 4161eliminating 4162the need for a separate preprocessing step during builds. On Windows, it 4163also 4164eliminates the need to install a separate C compiler. ACPICA BZ 761. Some 4165features including full #define() macro support are still under 4166development. 4167These preprocessor directives are supported: 4168 #define 4169 #elif 4170 #else 4171 #endif 4172 #error 4173 #if 4174 #ifdef 4175 #ifndef 4176 #include 4177 #pragma message 4178 #undef 4179 #warning 4180In addition, these new command line options are supported: 4181 -D <symbol> Define symbol for preprocessor use 4182 -li Create preprocessed output file (*.i) 4183 -P Preprocess only and create preprocessor output file (*.i) 4184 4185Table Compiler: Fixed a problem where the equals operator within an 4186expression 4187did not work properly. 4188 4189Updated iASL to use the current versions of Bison/Flex. Updated the 4190Windows 4191project file to invoke these tools from the standard location. ACPICA BZ 4192904. 4193Versions supported: 4194 Flex for Windows: V2.5.4 4195 Bison for Windows: V2.4.1 4196 4197---------------------------------------- 419815 February 2012. Summary of changes for version 20120215: 4199 4200 42011) ACPICA Core Subsystem: 4202 4203There have been some major changes to the sleep/wake support code, as 4204described below (a - e). 4205 4206a) The AcpiLeaveSleepState has been split into two interfaces, similar to 4207AcpiEnterSleepStatePrep and AcpiEnterSleepState. The new interface is 4208AcpiLeaveSleepStatePrep. This allows the host to perform actions between 4209the 4210time the _BFS method is called and the _WAK method is called. NOTE: all 4211hosts 4212must update their wake/resume code or else sleep/wake will not work 4213properly. 4214Rafael Wysocki. 4215 4216b) In AcpiLeaveSleepState, now enable all runtime GPEs before calling the 4217_WAK 4218method. Some machines require that the GPEs are enabled before the _WAK 4219method 4220is executed. Thomas Renninger. 4221 4222c) In AcpiLeaveSleepState, now always clear the WAK_STS (wake status) 4223bit. 4224Some BIOS code assumes that WAK_STS will be cleared on resume and use it 4225to 4226determine whether the system is rebooting or resuming. Matthew Garrett. 4227 4228d) Move the invocations of _GTS (Going To Sleep) and _BFS (Back From 4229Sleep) to 4230match the ACPI specification requirement. Rafael Wysocki. 4231 4232e) Implemented full support for the ACPI 5.0 SleepStatus and SleepControl 4233registers within the V5 FADT. This support adds two new files: 4234hardware/hwesleep.c implements the support for the new registers. Moved 4235all 4236sleep/wake external interfaces to hardware/hwxfsleep.c. 4237 4238 4239Added a new OSL interface for ACPI table overrides, 4240AcpiOsPhysicalTableOverride. This interface allows the host to override a 4241table via a physical address, instead of the logical address required by 4242AcpiOsTableOverride. This simplifies the host implementation. Initial 4243implementation by Thomas Renninger. The ACPICA implementation creates a 4244single 4245shared function for table overrides that attempts both a logical and a 4246physical override. 4247 4248Expanded the OSL memory read/write interfaces to 64-bit data 4249(AcpiOsReadMemory, AcpiOsWriteMemory.) This enables full 64-bit memory 4250transfer support for GAS register structures passed to AcpiRead and 4251AcpiWrite. 4252 4253Implemented the ACPI_REDUCED_HARDWARE option to allow the creation of a 4254custom 4255build of ACPICA that supports only the ACPI 5.0 reduced hardware (SoC) 4256model. 4257See the ACPICA reference for details. ACPICA BZ 942. This option removes 4258about 425910% of the code and 5% of the static data, and the following hardware 4260ACPI 4261features become unavailable: 4262 PM Event and Control registers 4263 SCI interrupt (and handler) 4264 Fixed Events 4265 General Purpose Events (GPEs) 4266 Global Lock 4267 ACPI PM timer 4268 FACS table (Waking vectors and Global Lock) 4269 4270Updated the unix tarball directory structure to match the ACPICA git 4271source 4272tree. This ensures that the generic unix makefiles work properly (in 4273generate/unix). Also updated the Linux makefiles to match. ACPICA BZ 4274867. 4275 4276Updated the return value of the _REV predefined method to integer value 5 4277to 4278reflect ACPI 5.0 support. 4279 4280Moved the external ACPI PM timer interface prototypes to the public 4281acpixf.h 4282file where they belong. 4283 4284Example Code and Data Size: These are the sizes for the OS-independent 4285acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4286debug 4287version of the code includes the debug output trace mechanism and has a 4288much 4289larger code and data size. 4290 4291 Previous Release: 4292 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total 4293 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total 4294 Current Release: 4295 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total 4296 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 4297 4298 42992) iASL Compiler/Disassembler and Tools: 4300 4301Disassembler: Fixed a problem with the new ACPI 5.0 serial resource 4302descriptors (I2C, SPI, UART) where the resource produce/consumer bit was 4303incorrectly displayed. 4304 4305AcpiHelp: Add display of ACPI/PNP device IDs that are defined in the ACPI 4306specification. 4307 4308---------------------------------------- 430911 January 2012. Summary of changes for version 20120111: 4310 4311 43121) ACPICA Core Subsystem: 4313 4314Implemented a new mechanism to allow host device drivers to check for 4315address 4316range conflicts with ACPI Operation Regions. Both SystemMemory and 4317SystemIO 4318address spaces are supported. A new external interface, 4319AcpiCheckAddressRange, 4320allows drivers to check an address range against the ACPI namespace. See 4321the 4322ACPICA reference for additional details. Adds one new file, 4323utilities/utaddress.c. Lin Ming, Bob Moore. 4324 4325Fixed several issues with the ACPI 5.0 FADT support: Add the sleep 4326Control 4327and 4328Status registers, update the ACPI 5.0 flags, and update internal data 4329structures to handle an FADT larger than 256 bytes. The size of the ACPI 43305.0 4331FADT is 268 bytes. 4332 4333Updated all ACPICA copyrights and signons to 2012. Added the 2012 4334copyright to 4335all module headers and signons, including the standard Linux header. This 4336affects virtually every file in the ACPICA core subsystem, iASL compiler, 4337and 4338all ACPICA utilities. 4339 4340Example Code and Data Size: These are the sizes for the OS-independent 4341acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4342debug 4343version of the code includes the debug output trace mechanism and has a 4344much 4345larger code and data size. 4346 4347 Previous Release: 4348 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total 4349 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total 4350 Current Release: 4351 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total 4352 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total 4353 4354 43552) iASL Compiler/Disassembler and Tools: 4356 4357Disassembler: fixed a problem with the automatic resource tag generation 4358support. Fixes a problem where the resource tags are inadvertently not 4359constructed if the table being disassembled contains external references 4360to 4361control methods. Moved the actual construction of the tags to after the 4362final 4363namespace is constructed (after 2nd parse is invoked due to external 4364control 4365method references.) ACPICA BZ 941. 4366 4367Table Compiler: Make all "generic" operators caseless. These are the 4368operators 4369like UINT8, String, etc. Making these caseless improves ease-of-use. 4370ACPICA BZ 4371934. 4372 4373---------------------------------------- 437423 November 2011. Summary of changes for version 20111123: 4375 43760) ACPI 5.0 Support: 4377 4378This release contains full support for the ACPI 5.0 specification, as 4379summarized below. 4380 4381Reduced Hardware Support: 4382------------------------- 4383 4384This support allows for ACPI systems without the usual ACPI hardware. 4385This 4386support is enabled by a flag in the revision 5 FADT. If it is set, ACPICA 4387will 4388not attempt to initialize or use any of the usual ACPI hardware. Note, 4389when 4390this flag is set, all of the following ACPI hardware is assumed to be not 4391present and is not initialized or accessed: 4392 4393 General Purpose Events (GPEs) 4394 Fixed Events (PM1a/PM1b and PM Control) 4395 Power Management Timer and Console Buttons (power/sleep) 4396 Real-time Clock Alarm 4397 Global Lock 4398 System Control Interrupt (SCI) 4399 The FACS is assumed to be non-existent 4400 4401ACPI Tables: 4402------------ 4403 4404All new tables and updates to existing tables are fully supported in the 4405ACPICA headers (for use by device drivers), the disassembler, and the 4406iASL 4407Data Table Compiler. ACPI 5.0 defines these new tables: 4408 4409 BGRT /* Boot Graphics Resource Table */ 4410 DRTM /* Dynamic Root of Trust for Measurement table */ 4411 FPDT /* Firmware Performance Data Table */ 4412 GTDT /* Generic Timer Description Table */ 4413 MPST /* Memory Power State Table */ 4414 PCCT /* Platform Communications Channel Table */ 4415 PMTT /* Platform Memory Topology Table */ 4416 RASF /* RAS Feature table */ 4417 4418Operation Regions/SpaceIDs: 4419--------------------------- 4420 4421All new operation regions are fully supported by the iASL compiler, the 4422disassembler, and the ACPICA runtime code (for dispatch to region 4423handlers.) 4424The new operation region Space IDs are: 4425 4426 GeneralPurposeIo 4427 GenericSerialBus 4428 4429Resource Descriptors: 4430--------------------- 4431 4432All new ASL resource descriptors are fully supported by the iASL 4433compiler, 4434the 4435ASL/AML disassembler, and the ACPICA runtime Resource Manager code 4436(including 4437all new predefined resource tags). New descriptors are: 4438 4439 FixedDma 4440 GpioIo 4441 GpioInt 4442 I2cSerialBus 4443 SpiSerialBus 4444 UartSerialBus 4445 4446ASL/AML Operators, New and Modified: 4447------------------------------------ 4448 4449One new operator is added, the Connection operator, which is used to 4450associate 4451a GeneralPurposeIo or GenericSerialBus resource descriptor with 4452individual 4453field objects within an operation region. Several new protocols are 4454associated 4455with the AccessAs operator. All are fully supported by the iASL compiler, 4456disassembler, and runtime ACPICA AML interpreter: 4457 4458 Connection // Declare Field Connection 4459attributes 4460 AccessAs: AttribBytes (n) // Read/Write N-Bytes Protocol 4461 AccessAs: AttribRawBytes (n) // Raw Read/Write N-Bytes 4462Protocol 4463 AccessAs: AttribRawProcessBytes (n) // Raw Process Call Protocol 4464 RawDataBuffer // Data type for Vendor Data 4465fields 4466 4467Predefined ASL/AML Objects: 4468--------------------------- 4469 4470All new predefined objects/control-methods are supported by the iASL 4471compiler 4472and the ACPICA runtime validation/repair (arguments and return values.) 4473New 4474predefined names include the following: 4475 4476Standard Predefined Names (Objects or Control Methods): 4477 _AEI, _CLS, _CPC, _CWS, _DEP, 4478 _DLM, _EVT, _GCP, _CRT, _GWS, 4479 _HRV, _PRE, _PSE, _SRT, _SUB. 4480 4481Resource Tags (Names used to access individual fields within resource 4482descriptors): 4483 _DBT, _DPL, _DRS, _END, _FLC, 4484 _IOR, _LIN, _MOD, _PAR, _PHA, 4485 _PIN, _PPI, _POL, _RXL, _SLV, 4486 _SPE, _STB, _TXL, _VEN. 4487 4488ACPICA External Interfaces: 4489--------------------------- 4490 4491Several new interfaces have been defined for use by ACPI-related device 4492drivers and other host OS services: 4493 4494AcpiAcquireMutex and AcpiReleaseMutex: These interfaces allow the host OS 4495to 4496acquire and release AML mutexes that are defined in the DSDT/SSDT tables 4497provided by the BIOS. They are intended to be used in conjunction with 4498the 4499ACPI 5.0 _DLM (Device Lock Method) in order to provide transaction-level 4500mutual exclusion with the AML code/interpreter. 4501 4502AcpiGetEventResources: Returns the (formatted) resource descriptors as 4503defined 4504by the ACPI 5.0 _AEI object (ACPI Event Information). This object 4505provides 4506resource descriptors associated with hardware-reduced platform events, 4507similar 4508to the AcpiGetCurrentResources interface. 4509 4510Operation Region Handlers: For General Purpose IO and Generic Serial Bus 4511operation regions, information about the Connection() object and any 4512optional 4513length information is passed to the region handler within the Context 4514parameter. 4515 4516AcpiBufferToResource: This interface converts a raw AML buffer containing 4517a 4518resource template or resource descriptor to the ACPI_RESOURCE internal 4519format 4520suitable for use by device drivers. Can be used by an operation region 4521handler 4522to convert the Connection() buffer object into a ACPI_RESOURCE. 4523 4524Miscellaneous/Tools/TestSuites: 4525------------------------------- 4526 4527Support for extended _HID names (Four alpha characters instead of three). 4528Support for ACPI 5.0 features in the AcpiExec and AcpiHelp utilities. 4529Support for ACPI 5.0 features in the ASLTS test suite. 4530Fully updated documentation (ACPICA and iASL reference documents.) 4531 4532ACPI Table Definition Language: 4533------------------------------- 4534 4535Support for this language was implemented and released as a subsystem of 4536the 4537iASL compiler in 2010. (See the iASL compiler User Guide.) 4538 4539 4540Non-ACPI 5.0 changes for this release: 4541-------------------------------------- 4542 45431) ACPICA Core Subsystem: 4544 4545Fix a problem with operation region declarations where a failure can 4546occur 4547if 4548the region name and an argument that evaluates to an object (such as the 4549region address) are in different namespace scopes. Lin Ming, ACPICA BZ 4550937. 4551 4552Do not abort an ACPI table load if an invalid space ID is found within. 4553This 4554will be caught later if the offending method is executed. ACPICA BZ 925. 4555 4556Fixed an issue with the FFixedHW space ID where the ID was not always 4557recognized properly (Both ACPICA and iASL). ACPICA BZ 926. 4558 4559Fixed a problem with the 32-bit generation of the unix-specific OSL 4560(osunixxf.c). Lin Ming, ACPICA BZ 936. 4561 4562Several changes made to enable generation with the GCC 4.6 compiler. 4563ACPICA BZ 4564935. 4565 4566New error messages: Unsupported I/O requests (not 8/16/32 bit), and 4567Index/Bank 4568field registers out-of-range. 4569 45702) iASL Compiler/Disassembler and Tools: 4571 4572iASL: Implemented the __PATH__ operator, which returns the full pathname 4573of 4574the current source file. 4575 4576AcpiHelp: Automatically display expanded keyword information for all ASL 4577operators. 4578 4579Debugger: Add "Template" command to disassemble/dump resource template 4580buffers. 4581 4582Added a new master script to generate and execute the ASLTS test suite. 4583Automatically handles 32- and 64-bit generation. See tests/aslts.sh 4584 4585iASL: Fix problem with listing generation during processing of the 4586Switch() 4587operator where AML listing was disabled until the entire Switch block was 4588completed. 4589 4590iASL: Improve support for semicolon statement terminators. Fix "invalid 4591character" message for some cases when the semicolon is used. Semicolons 4592are 4593now allowed after every <Term> grammar element. ACPICA BZ 927. 4594 4595iASL: Fixed some possible aliasing warnings during generation. ACPICA BZ 4596923. 4597 4598Disassembler: Fix problem with disassembly of the DataTableRegion 4599operator 4600where an inadvertent "Unhandled deferred opcode" message could be 4601generated. 4602 46033) Example Code and Data Size 4604 4605These are the sizes for the OS-independent acpica.lib produced by the 4606Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code 4607includes the debug output trace mechanism and has a much larger code and 4608data 4609size. 4610 4611 Previous Release: 4612 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 4613 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 4614 Current Release: 4615 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total 4616 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total 4617 4618---------------------------------------- 461922 September 2011. Summary of changes for version 20110922: 4620 46210) ACPI 5.0 News: 4622 4623Support for ACPI 5.0 in ACPICA has been underway for several months and 4624will 4625be released at the same time that ACPI 5.0 is officially released. 4626 4627The ACPI 5.0 specification is on track for release in the next few 4628months. 4629 46301) ACPICA Core Subsystem: 4631 4632Fixed a problem where the maximum sleep time for the Sleep() operator was 4633intended to be limited to two seconds, but was inadvertently limited to 463420 4635seconds instead. 4636 4637Linux and Unix makefiles: Added header file dependencies to ensure 4638correct 4639generation of ACPICA core code and utilities. Also simplified the 4640makefiles 4641considerably through the use of the vpath variable to specify search 4642paths. 4643ACPICA BZ 924. 4644 46452) iASL Compiler/Disassembler and Tools: 4646 4647iASL: Implemented support to check the access length for all fields 4648created to 4649access named Resource Descriptor fields. For example, if a resource field 4650is 4651defined to be two bits, a warning is issued if a CreateXxxxField() is 4652used 4653with an incorrect bit length. This is implemented for all current 4654resource 4655descriptor names. ACPICA BZ 930. 4656 4657Disassembler: Fixed a byte ordering problem with the output of 24-bit and 465856- 4659bit integers. 4660 4661iASL: Fixed a couple of issues associated with variable-length package 4662objects. 1) properly handle constants like One, Ones, Zero -- do not make 4663a 4664VAR_PACKAGE when these are used as a package length. 2) Allow the 4665VAR_PACKAGE 4666opcode (in addition to PACKAGE) when validating object types for 4667predefined 4668names. 4669 4670iASL: Emit statistics for all output files (instead of just the ASL input 4671and 4672AML output). Includes listings, hex files, etc. 4673 4674iASL: Added -G option to the table compiler to allow the compilation of 4675custom 4676ACPI tables. The only part of a table that is required is the standard 467736- 4678byte 4679ACPI header. 4680 4681AcpiXtract: Ported to the standard ACPICA environment (with ACPICA 4682headers), 4683which also adds correct 64-bit support. Also, now all output filenames 4684are 4685completely lower case. 4686 4687AcpiExec: Ignore any non-AML tables (tables other than DSDT or SSDT) when 4688loading table files. A warning is issued for any such tables. The only 4689exception is an FADT. This also fixes a possible fault when attempting to 4690load 4691non-AML tables. ACPICA BZ 932. 4692 4693AcpiHelp: Added the AccessAs and Offset operators. Fixed a problem where 4694a 4695missing table terminator could cause a fault when using the -p option. 4696 4697AcpiSrc: Fixed a possible divide-by-zero fault when generating file 4698statistics. 4699 47003) Example Code and Data Size 4701 4702These are the sizes for the OS-independent acpica.lib produced by the 4703Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code 4704includes the debug output trace mechanism and has a much larger code and 4705data 4706size. 4707 4708 Previous Release (VC 9.0): 4709 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 4710 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 4711 Current Release (VC 9.0): 4712 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 4713 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 4714 4715 4716---------------------------------------- 471723 June 2011. Summary of changes for version 20110623: 4718 47191) ACPI CA Core Subsystem: 4720 4721Updated the predefined name repair mechanism to not attempt repair of a 4722_TSS 4723return object if a _PSS object is present. We can only sort the _TSS 4724return 4725package if there is no _PSS within the same scope. This is because if 4726_PSS 4727is 4728present, the ACPI specification dictates that the _TSS Power Dissipation 4729field 4730is to be ignored, and therefore some BIOSs leave garbage values in the 4731_TSS 4732Power field(s). In this case, it is best to just return the _TSS package 4733as- 4734is. Reported by, and fixed with assistance from Fenghua Yu. 4735 4736Added an option to globally disable the control method return value 4737validation 4738and repair. This runtime option can be used to disable return value 4739repair 4740if 4741this is causing a problem on a particular machine. Also added an option 4742to 4743AcpiExec (-dr) to set this disable flag. 4744 4745All makefiles and project files: Major changes to improve generation of 4746ACPICA 4747tools. ACPICA BZ 912: 4748 Reduce default optimization levels to improve compatibility 4749 For Linux, add strict-aliasing=0 for gcc 4 4750 Cleanup and simplify use of command line defines 4751 Cleanup multithread library support 4752 Improve usage messages 4753 4754Linux-specific header: update handling of THREAD_ID and pthread. For the 475532- 4756bit case, improve casting to eliminate possible warnings, especially with 4757the 4758acpica tools. 4759 4760Example Code and Data Size: These are the sizes for the OS-independent 4761acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4762debug 4763version of the code includes the debug output trace mechanism and has a 4764much 4765larger code and data size. 4766 4767 Previous Release (VC 9.0): 4768 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total 4769 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 4770 Current Release (VC 9.0): 4771 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 4772 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 4773 47742) iASL Compiler/Disassembler and Tools: 4775 4776With this release, a new utility named "acpihelp" has been added to the 4777ACPICA 4778package. This utility summarizes the ACPI specification chapters for the 4779ASL 4780and AML languages. It generates under Linux/Unix as well as Windows, and 4781provides the following functionality: 4782 Find/display ASL operator(s) -- with description and syntax. 4783 Find/display ASL keyword(s) -- with exact spelling and descriptions. 4784 Find/display ACPI predefined name(s) -- with description, number 4785 of arguments, and the return value data type. 4786 Find/display AML opcode name(s) -- with opcode, arguments, and 4787grammar. 4788 Decode/display AML opcode -- with opcode name, arguments, and 4789grammar. 4790 4791Service Layers: Make multi-thread support configurable. Conditionally 4792compile 4793the multi-thread support so that threading libraries will not be linked 4794if 4795not 4796necessary. The only tool that requires multi-thread support is AcpiExec. 4797 4798iASL: Update yyerrror/AslCompilerError for "const" errors. Newer versions 4799of 4800Bison appear to want the interface to yyerror to be a const char * (or at 4801least this is a problem when generating iASL on some systems.) ACPICA BZ 4802923 4803Pierre Lejeune. 4804 4805Tools: Fix for systems where O_BINARY is not defined. Only used for 4806Windows 4807versions of the tools. 4808 4809---------------------------------------- 481027 May 2011. Summary of changes for version 20110527: 4811 48121) ACPI CA Core Subsystem: 4813 4814ASL Load() operator: Reinstate most restrictions on the incoming ACPI 4815table 4816signature. Now, only allow SSDT, OEMx, and a null signature. History: 4817 1) Originally, we checked the table signature for "SSDT" or "PSDT". 4818 (PSDT is now obsolete.) 4819 2) We added support for OEMx tables, signature "OEM" plus a fourth 4820 "don't care" character. 4821 3) Valid tables were encountered with a null signature, so we just 4822 gave up on validating the signature, (05/2008). 4823 4) We encountered non-AML tables such as the MADT, which caused 4824 interpreter errors and kernel faults. So now, we once again allow 4825 only SSDT, OEMx, and now, also a null signature. (05/2011). 4826 4827Added the missing _TDL predefined name to the global name list in order 4828to 4829enable validation. Affects both the core ACPICA code and the iASL 4830compiler. 4831 4832Example Code and Data Size: These are the sizes for the OS-independent 4833acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4834debug 4835version of the code includes the debug output trace mechanism and has a 4836much 4837larger code and data size. 4838 4839 Previous Release (VC 9.0): 4840 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total 4841 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total 4842 Current Release (VC 9.0): 4843 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total 4844 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 4845 48462) iASL Compiler/Disassembler and Tools: 4847 4848Debugger/AcpiExec: Implemented support for "complex" method arguments on 4849the 4850debugger command line. This adds support beyond simple integers -- 4851including 4852Strings, Buffers, and Packages. Includes support for nested packages. 4853Increased the default command line buffer size to accommodate these 4854arguments. 4855See the ACPICA reference for details and syntax. ACPICA BZ 917. 4856 4857Debugger/AcpiExec: Implemented support for "default" method arguments for 4858the 4859Execute/Debug command. Now, the debugger will always invoke a control 4860method 4861with the required number of arguments -- even if the command line 4862specifies 4863none or insufficient arguments. It uses default integer values for any 4864missing 4865arguments. Also fixes a bug where only six method arguments maximum were 4866supported instead of the required seven. 4867 4868Debugger/AcpiExec: Add a maximum buffer length parameter to AcpiOsGetLine 4869and 4870also return status in order to prevent buffer overruns. See the ACPICA 4871reference for details and syntax. ACPICA BZ 921 4872 4873iASL: Cleaned up support for Berkeley yacc. A general cleanup of code and 4874makefiles to simplify support for the two different but similar parser 4875generators, bison and yacc. 4876 4877Updated the generic unix makefile for gcc 4. The default gcc version is 4878now 4879expected to be 4 or greater, since options specific to gcc 4 are used. 4880 4881---------------------------------------- 488213 April 2011. Summary of changes for version 20110413: 4883 48841) ACPI CA Core Subsystem: 4885 4886Implemented support to execute a so-called "orphan" _REG method under the 4887EC 4888device. This change will force the execution of a _REG method underneath 4889the 4890EC 4891device even if there is no corresponding operation region of type 4892EmbeddedControl. Fixes a problem seen on some machines and apparently is 4893compatible with Windows behavior. ACPICA BZ 875. 4894 4895Added more predefined methods that are eligible for automatic NULL 4896package 4897element removal. This change adds another group of predefined names to 4898the 4899list 4900of names that can be repaired by having NULL package elements dynamically 4901removed. This group are those methods that return a single variable- 4902length 4903package containing simple data types such as integers, buffers, strings. 4904This 4905includes: _ALx, _BCL, _CID,_ DOD, _EDL, _FIX, _PCL, _PLD, _PMD, _PRx, 4906_PSL, 4907_Sx, 4908and _TZD. ACPICA BZ 914. 4909 4910Split and segregated all internal global lock functions to a new file, 4911evglock.c. 4912 4913Updated internal address SpaceID for DataTable regions. Moved this 4914internal 4915space 4916id in preparation for ACPI 5.0 changes that will include some new space 4917IDs. 4918This 4919change should not affect user/host code. 4920 4921Example Code and Data Size: These are the sizes for the OS-independent 4922acpica.lib 4923produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug 4924version of 4925the code includes the debug output trace mechanism and has a much larger 4926code 4927and 4928data size. 4929 4930 Previous Release (VC 9.0): 4931 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total 4932 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total 4933 Current Release (VC 9.0): 4934 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total 4935 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total 4936 49372) iASL Compiler/Disassembler and Tools: 4938 4939iASL/DTC: Major update for new grammar features. Allow generic data types 4940in 4941custom ACPI tables. Field names are now optional. Any line can be split 4942to 4943multiple lines using the continuation char (\). Large buffers now use 4944line- 4945continuation character(s) and no colon on the continuation lines. See the 4946grammar 4947update in the iASL compiler reference. ACPI BZ 910,911. Lin Ming, Bob 4948Moore. 4949 4950iASL: Mark ASL "Return()" and the simple "Return" as "Null" return 4951statements. 4952Since the parser stuffs a "zero" as the return value for these statements 4953(due 4954to 4955the underlying AML grammar), they were seen as "return with value" by the 4956iASL 4957semantic checking. They are now seen correctly as "null" return 4958statements. 4959 4960iASL: Check if a_REG declaration has a corresponding Operation Region. 4961Adds a 4962check for each _REG to ensure that there is in fact a corresponding 4963operation 4964region declaration in the same scope. If not, the _REG method is not very 4965useful 4966since it probably won't be executed. ACPICA BZ 915. 4967 4968iASL/DTC: Finish support for expression evaluation. Added a new 4969expression 4970parser 4971that implements c-style operator precedence and parenthesization. ACPICA 4972bugzilla 4973908. 4974 4975Disassembler/DTC: Remove support for () and <> style comments in data 4976tables. 4977Now 4978that DTC has full expression support, we don't want to have comment 4979strings 4980that 4981start with a parentheses or a less-than symbol. Now, only the standard /* 4982and 4983// 4984comments are supported, as well as the bracket [] comments. 4985 4986AcpiXtract: Fix for RSDP and dynamic SSDT extraction. These tables have 4987"unusual" 4988headers in the acpidump file. Update the header validation to support 4989these 4990tables. Problem introduced in previous AcpiXtract version in the change 4991to 4992support "wrong checksum" error messages emitted by acpidump utility. 4993 4994iASL: Add a * option to generate all template files (as a synonym for 4995ALL) 4996as 4997in 4998"iasl -T *" or "iasl -T ALL". 4999 5000iASL/DTC: Do not abort compiler on fatal errors. We do not want to 5001completely 5002abort the compiler on "fatal" errors, simply should abort the current 5003compile. 5004This allows multiple compiles with a single (possibly wildcard) compiler 5005invocation. 5006 5007---------------------------------------- 500816 March 2011. Summary of changes for version 20110316: 5009 50101) ACPI CA Core Subsystem: 5011 5012Fixed a problem caused by a _PRW method appearing at the namespace root 5013scope 5014during the setup of wake GPEs. A fault could occur if a _PRW directly 5015under 5016the 5017root object was passed to the AcpiSetupGpeForWake interface. Lin Ming. 5018 5019Implemented support for "spurious" Global Lock interrupts. On some 5020systems, a 5021global lock interrupt can occur without the pending flag being set. Upon 5022a 5023GL 5024interrupt, we now ensure that a thread is actually waiting for the lock 5025before 5026signaling GL availability. Rafael Wysocki, Bob Moore. 5027 5028Example Code and Data Size: These are the sizes for the OS-independent 5029acpica.lib 5030produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug 5031version of 5032the code includes the debug output trace mechanism and has a much larger 5033code 5034and 5035data size. 5036 5037 Previous Release (VC 9.0): 5038 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 5039 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 5040 Current Release (VC 9.0): 5041 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total 5042 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total 5043 50442) iASL Compiler/Disassembler and Tools: 5045 5046Implemented full support for the "SLIC" ACPI table. Includes support in 5047the 5048header files, disassembler, table compiler, and template generator. Bob 5049Moore, 5050Lin Ming. 5051 5052AcpiXtract: Correctly handle embedded comments and messages from 5053AcpiDump. 5054Apparently some or all versions of acpidump will occasionally emit a 5055comment 5056like 5057"Wrong checksum", etc., into the dump file. This was causing problems for 5058AcpiXtract. ACPICA BZ 905. 5059 5060iASL: Fix the Linux makefile by removing an inadvertent double file 5061inclusion. 5062ACPICA BZ 913. 5063 5064AcpiExec: Update installation of operation region handlers. Install one 5065handler 5066for a user-defined address space. This is used by the ASL test suite 5067(ASLTS). 5068 5069---------------------------------------- 507011 February 2011. Summary of changes for version 20110211: 5071 50721) ACPI CA Core Subsystem: 5073 5074Added a mechanism to defer _REG methods for some early-installed 5075handlers. 5076Most user handlers should be installed before call to 5077AcpiEnableSubsystem. 5078However, Event handlers and region handlers should be installed after 5079AcpiInitializeObjects. Override handlers for the "default" regions should 5080be 5081installed early, however. This change executes all _REG methods for the 5082default regions (Memory/IO/PCI/DataTable) simultaneously to prevent any 5083chicken/egg issues between them. ACPICA BZ 848. 5084 5085Implemented an optimization for GPE detection. This optimization will 5086simply 5087ignore GPE registers that contain no enabled GPEs -- there is no need to 5088read the register since this information is available internally. This 5089becomes more important on machines with a large GPE space. ACPICA 5090bugzilla 5091884. Lin Ming. Suggestion from Joe Liu. 5092 5093Removed all use of the highly unreliable FADT revision field. The 5094revision 5095number in the FADT has been found to be completely unreliable and cannot 5096be 5097trusted. Only the actual table length can be used to infer the version. 5098This 5099change updates the ACPICA core and the disassembler so that both no 5100longer 5101even look at the FADT version and instead depend solely upon the FADT 5102length. 5103 5104Fix an unresolved name issue for the no-debug and no-error-message source 5105generation cases. The _AcpiModuleName was left undefined in these cases, 5106but 5107it is actually needed as a parameter to some interfaces. Define 5108_AcpiModuleName as a null string in these cases. ACPICA Bugzilla 888. 5109 5110Split several large files (makefiles and project files updated) 5111 utglobal.c -> utdecode.c 5112 dbcomds.c -> dbmethod.c dbnames.c 5113 dsopcode.c -> dsargs.c dscontrol.c 5114 dsload.c -> dsload2.c 5115 aslanalyze.c -> aslbtypes.c aslwalks.c 5116 5117Example Code and Data Size: These are the sizes for the OS-independent 5118acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 5119debug version of the code includes the debug output trace mechanism and 5120has 5121a much larger code and data size. 5122 5123 Previous Release (VC 9.0): 5124 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 5125 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 5126 Current Release (VC 9.0): 5127 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 5128 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 5129 51302) iASL Compiler/Disassembler and Tools: 5131 5132iASL: Implemented the predefined macros __LINE__, __FILE__, and __DATE__. 5133These are useful C-style macros with the standard definitions. ACPICA 5134bugzilla 898. 5135 5136iASL/DTC: Added support for integer expressions and labels. Support for 5137full 5138expressions for all integer fields in all ACPI tables. Support for labels 5139in 5140"generic" portions of tables such as UEFI. See the iASL reference manual. 5141 5142Debugger: Added a command to display the status of global handlers. The 5143"handlers" command will display op region, fixed event, and miscellaneous 5144global handlers. installation status -- and for op regions, whether 5145default 5146or user-installed handler will be used. 5147 5148iASL: Warn if reserved method incorrectly returns a value. Many 5149predefined 5150names are defined such that they do not return a value. If implemented as 5151a 5152method, issue a warning if such a name explicitly returns a value. ACPICA 5153Bugzilla 855. 5154 5155iASL: Added detection of GPE method name conflicts. Detects a conflict 5156where 5157there are two GPE methods of the form _Lxy and _Exy in the same scope. 5158(For 5159example, _L1D and _E1D in the same scope.) ACPICA bugzilla 848. 5160 5161iASL/DTC: Fixed a couple input scanner issues with comments and line 5162numbers. Comment remover could get confused and miss a comment ending. 5163Fixed 5164a problem with line counter maintenance. 5165 5166iASL/DTC: Reduced the severity of some errors from fatal to error. There 5167is 5168no need to abort on simple errors within a field definition. 5169 5170Debugger: Simplified the output of the help command. All help output now 5171in 5172a single screen, instead of help subcommands. ACPICA Bugzilla 897. 5173 5174---------------------------------------- 517512 January 2011. Summary of changes for version 20110112: 5176 51771) ACPI CA Core Subsystem: 5178 5179Fixed a race condition between method execution and namespace walks that 5180can 5181possibly cause a fault. The problem was apparently introduced in version 518220100528 as a result of a performance optimization that reduces the 5183number 5184of 5185namespace walks upon method exit by using the delete_namespace_subtree 5186function instead of the delete_namespace_by_owner function used 5187previously. 5188Bug is a missing namespace lock in the delete_namespace_subtree function. 5189dana.myers@oracle.com 5190 5191Fixed several issues and a possible fault with the automatic "serialized" 5192method support. History: This support changes a method to "serialized" on 5193the 5194fly if the method generates an AE_ALREADY_EXISTS error, indicating the 5195possibility that it cannot handle reentrancy. This fix repairs a couple 5196of 5197issues seen in the field, especially on machines with many cores: 5198 5199 1) Delete method children only upon the exit of the last thread, 5200 so as to not delete objects out from under other running threads 5201 (and possibly causing a fault.) 5202 2) Set the "serialized" bit for the method only upon the exit of the 5203 Last thread, so as to not cause deadlock when running threads 5204 attempt to exit. 5205 3) Cleanup the use of the AML "MethodFlags" and internal method flags 5206 so that there is no longer any confusion between the two. 5207 5208 Lin Ming, Bob Moore. Reported by dana.myers@oracle.com. 5209 5210Debugger: Now lock the namespace for duration of a namespace dump. 5211Prevents 5212issues if the namespace is changing dynamically underneath the debugger. 5213Especially affects temporary namespace nodes, since the debugger displays 5214these also. 5215 5216Updated the ordering of include files. The ACPICA headers should appear 5217before any compiler-specific headers (stdio.h, etc.) so that acenv.h can 5218set 5219any necessary compiler-specific defines, etc. Affects the ACPI-related 5220tools 5221and utilities. 5222 5223Updated all ACPICA copyrights and signons to 2011. Added the 2011 5224copyright 5225to all module headers and signons, including the Linux header. This 5226affects 5227virtually every file in the ACPICA core subsystem, iASL compiler, and all 5228utilities. 5229 5230Added project files for MS Visual Studio 2008 (VC++ 9.0). The original 5231project files for VC++ 6.0 are now obsolete. New project files can be 5232found 5233under acpica/generate/msvc9. See acpica/generate/msvc9/readme.txt for 5234details. 5235 5236Example Code and Data Size: These are the sizes for the OS-independent 5237acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 5238debug version of the code includes the debug output trace mechanism and 5239has a 5240much larger code and data size. 5241 5242 Previous Release (VC 6.0): 5243 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total 5244 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total 5245 Current Release (VC 9.0): 5246 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 5247 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 5248 52492) iASL Compiler/Disassembler and Tools: 5250 5251iASL: Added generic data types to the Data Table compiler. Add "generic" 5252data 5253types such as UINT32, String, Unicode, etc., to simplify the generation 5254of 5255platform-defined tables such as UEFI. Lin Ming. 5256 5257iASL: Added listing support for the Data Table Compiler. Adds listing 5258support 5259(-l) to display actual binary output for each line of input code. 5260 5261---------------------------------------- 526209 December 2010. Summary of changes for version 20101209: 5263 52641) ACPI CA Core Subsystem: 5265 5266Completed the major overhaul of the GPE support code that was begun in 5267July 52682010. Major features include: removal of _PRW execution in ACPICA (host 5269executes _PRWs anyway), cleanup of "wake" GPE interfaces and processing, 5270changes to existing interfaces, simplification of GPE handler operation, 5271and 5272a handful of new interfaces: 5273 5274 AcpiUpdateAllGpes 5275 AcpiFinishGpe 5276 AcpiSetupGpeForWake 5277 AcpiSetGpeWakeMask 5278 One new file, evxfgpe.c to consolidate all external GPE interfaces. 5279 5280See the ACPICA Programmer Reference for full details and programming 5281information. See the new section 4.4 "General Purpose Event (GPE) 5282Support" 5283for a full overview, and section 8.7 "ACPI General Purpose Event 5284Management" 5285for programming details. ACPICA BZ 858,870,877. Matthew Garrett, Lin 5286Ming, 5287Bob Moore, Rafael Wysocki. 5288 5289Implemented a new GPE feature for Windows compatibility, the "Implicit 5290Wake 5291GPE Notify". This feature will automatically issue a Notify(2) on a 5292device 5293when a Wake GPE is received if there is no corresponding GPE method or 5294handler. ACPICA BZ 870. 5295 5296Fixed a problem with the Scope() operator during table parse and load 5297phase. 5298During load phase (table load or method execution), the scope operator 5299should 5300not enter the target into the namespace. Instead, it should open a new 5301scope 5302at the target location. Linux BZ 19462, ACPICA BZ 882. 5303 5304Example Code and Data Size: These are the sizes for the OS-independent 5305acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5306debug version of the code includes the debug output trace mechanism and 5307has a 5308much larger code and data size. 5309 5310 Previous Release: 5311 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total 5312 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total 5313 Current Release: 5314 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 5315 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 5316 53172) iASL Compiler/Disassembler and Tools: 5318 5319iASL: Relax the alphanumeric restriction on _CID strings. These strings 5320are 5321"bus-specific" per the ACPI specification, and therefore any characters 5322are 5323acceptable. The only checks that can be performed are for a null string 5324and 5325perhaps for a leading asterisk. ACPICA BZ 886. 5326 5327iASL: Fixed a problem where a syntax error that caused a premature EOF 5328condition on the source file emitted a very confusing error message. The 5329premature EOF is now detected correctly. ACPICA BZ 891. 5330 5331Disassembler: Decode the AccessSize within a Generic Address Structure 5332(byte 5333access, word access, etc.) Note, this field does not allow arbitrary bit 5334access, the size is encoded as 1=byte, 2=word, 3=dword, and 4=qword. 5335 5336New: AcpiNames utility - Example namespace dump utility. Shows an example 5337of 5338ACPICA configuration for a minimal namespace dump utility. Uses table and 5339namespace managers, but no AML interpreter. Does not add any 5340functionality 5341over AcpiExec, it is a subset of AcpiExec. The purpose is to show how to 5342partition and configure ACPICA. ACPICA BZ 883. 5343 5344AML Debugger: Increased the debugger buffer size for method return 5345objects. 5346Was 4K, increased to 16K. Also enhanced error messages for debugger 5347method 5348execution, including the buffer overflow case. 5349 5350---------------------------------------- 535113 October 2010. Summary of changes for version 20101013: 5352 53531) ACPI CA Core Subsystem: 5354 5355Added support to clear the PCIEXP_WAKE event. When clearing ACPI events, 5356now 5357clear the PCIEXP_WAKE_STS bit in the ACPI PM1 Status Register, via 5358HwClearAcpiStatus. Original change from Colin King. ACPICA BZ 880. 5359 5360Changed the type of the predefined namespace object _TZ from ThermalZone 5361to 5362Device. This was found to be confusing to the host software that 5363processes 5364the various thermal zones, since _TZ is not really a ThermalZone. 5365However, 5366a 5367Notify() can still be performed on it. ACPICA BZ 876. Suggestion from Rui 5368Zhang. 5369 5370Added Windows Vista SP2 to the list of supported _OSI strings. The actual 5371string is "Windows 2006 SP2". 5372 5373Eliminated duplicate code in AcpiUtExecute* functions. Now that the 5374nsrepair 5375code automatically repairs _HID-related strings, this type of code is no 5376longer needed in Execute_HID, Execute_CID, and Execute_UID. ACPICA BZ 5377878. 5378 5379Example Code and Data Size: These are the sizes for the OS-independent 5380acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5381debug version of the code includes the debug output trace mechanism and 5382has a 5383much larger code and data size. 5384 5385 Previous Release: 5386 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 5387 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 5388 Current Release: 5389 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 5390 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 5391 53922) iASL Compiler/Disassembler and Tools: 5393 5394iASL: Implemented additional compile-time validation for _HID strings. 5395The 5396non-hex prefix (such as "PNP" or "ACPI") must be uppercase, and the 5397length 5398of 5399the string must be exactly seven or eight characters. For both _HID and 5400_CID 5401strings, all characters must be alphanumeric. ACPICA BZ 874. 5402 5403iASL: Allow certain "null" resource descriptors. Some BIOS code creates 5404descriptors that are mostly or all zeros, with the expectation that they 5405will 5406be filled in at runtime. iASL now allows this as long as there is a 5407"resource 5408tag" (name) associated with the descriptor, which gives the ASL a handle 5409needed to modify the descriptor. ACPICA BZ 873. 5410 5411Added single-thread support to the generic Unix application OSL. 5412Primarily 5413for iASL support, this change removes the use of semaphores in the 5414single- 5415threaded ACPICA tools/applications - increasing performance. The 5416_MULTI_THREADED option was replaced by the (reverse) ACPI_SINGLE_THREADED 5417option. ACPICA BZ 879. 5418 5419AcpiExec: several fixes for the 64-bit version. Adds XSDT support and 5420support 5421for 64-bit DSDT/FACS addresses in the FADT. Lin Ming. 5422 5423iASL: Moved all compiler messages to a new file, aslmessages.h. 5424 5425---------------------------------------- 542615 September 2010. Summary of changes for version 20100915: 5427 54281) ACPI CA Core Subsystem: 5429 5430Removed the AcpiOsDerivePciId OSL interface. The various host 5431implementations 5432of this function were not OS-dependent and are now obsolete and can be 5433removed from all host OSLs. This function has been replaced by 5434AcpiHwDerivePciId, which is now part of the ACPICA core code. 5435AcpiHwDerivePciId has been implemented without recursion. Adds one new 5436module, hwpci.c. ACPICA BZ 857. 5437 5438Implemented a dynamic repair for _HID and _CID strings. The following 5439problems are now repaired at runtime: 1) Remove a leading asterisk in the 5440string, and 2) the entire string is uppercased. Both repairs are in 5441accordance with the ACPI specification and will simplify host driver 5442code. 5443ACPICA BZ 871. 5444 5445The ACPI_THREAD_ID type is no longer configurable, internally it is now 5446always UINT64. This simplifies the ACPICA code, especially any printf 5447output. 5448UINT64 is the only common data type for all thread_id types across all 5449operating systems. It is now up to the host OSL to cast the native 5450thread_id 5451type to UINT64 before returning the value to ACPICA (via 5452AcpiOsGetThreadId). 5453Lin Ming, Bob Moore. 5454 5455Added the ACPI_INLINE type to enhance the ACPICA configuration. The 5456"inline" 5457keyword is not standard across compilers, and this type allows inline to 5458be 5459configured on a per-compiler basis. Lin Ming. 5460 5461Made the system global AcpiGbl_SystemAwakeAndRunning publically 5462available. 5463Added an extern for this boolean in acpixf.h. Some hosts utilize this 5464value 5465during suspend/restore operations. ACPICA BZ 869. 5466 5467All code that implements error/warning messages with the "ACPI:" prefix 5468has 5469been moved to a new module, utxferror.c. 5470 5471The UINT64_OVERLAY was moved to utmath.c, which is the only module where 5472it 5473is used. ACPICA BZ 829. Lin Ming, Bob Moore. 5474 5475Example Code and Data Size: These are the sizes for the OS-independent 5476acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5477debug version of the code includes the debug output trace mechanism and 5478has a 5479much larger code and data size. 5480 5481 Previous Release: 5482 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total 5483 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total 5484 Current Release: 5485 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 5486 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 5487 54882) iASL Compiler/Disassembler and Tools: 5489 5490iASL/Disassembler: Write ACPI errors to stderr instead of the output 5491file. 5492This keeps the output files free of random error messages that may 5493originate 5494from within the namespace/interpreter code. Used this opportunity to 5495merge 5496all ACPI:-style messages into a single new module, utxferror.c. ACPICA BZ 5497866. Lin Ming, Bob Moore. 5498 5499Tools: update some printfs for ansi warnings on size_t. Handle width 5500change 5501of size_t on 32-bit versus 64-bit generations. Lin Ming. 5502 5503---------------------------------------- 550406 August 2010. Summary of changes for version 20100806: 5505 55061) ACPI CA Core Subsystem: 5507 5508Designed and implemented a new host interface to the _OSI support code. 5509This 5510will allow the host to dynamically add or remove multiple _OSI strings, 5511as 5512well as install an optional handler that is called for each _OSI 5513invocation. 5514Also added a new AML debugger command, 'osi' to display and modify the 5515global 5516_OSI string table, and test support in the AcpiExec utility. See the 5517ACPICA 5518reference manual for full details. Lin Ming, Bob Moore. ACPICA BZ 836. 5519New Functions: 5520 AcpiInstallInterface - Add an _OSI string. 5521 AcpiRemoveInterface - Delete an _OSI string. 5522 AcpiInstallInterfaceHandler - Install optional _OSI handler. 5523Obsolete Functions: 5524 AcpiOsValidateInterface - no longer used. 5525New Files: 5526 source/components/utilities/utosi.c 5527 5528Re-introduced the support to enable multi-byte transfers for Embedded 5529Controller (EC) operation regions. A reported problem was found to be a 5530bug 5531in the host OS, not in the multi-byte support. Previously, the maximum 5532data 5533size passed to the EC operation region handler was a single byte. There 5534are 5535often EC Fields larger than one byte that need to be transferred, and it 5536is 5537useful for the EC driver to lock these as a single transaction. This 5538change 5539enables single transfers larger than 8 bits. This effectively changes the 5540access to the EC space from ByteAcc to AnyAcc, and will probably require 5541changes to the host OS Embedded Controller driver to enable 16/32/64/256- 5542bit 5543transfers in addition to 8-bit transfers. Alexey Starikovskiy, Lin Ming. 5544 5545Fixed a problem with the prototype for AcpiOsReadPciConfiguration. The 5546prototype in acpiosxf.h had the output value pointer as a (void *). 5547It should be a (UINT64 *). This may affect some host OSL code. 5548 5549Fixed a couple problems with the recently modified Linux makefiles for 5550iASL 5551and AcpiExec. These new makefiles place the generated object files in the 5552local directory so that there can be no collisions between the files that 5553are 5554shared between them that are compiled with different options. 5555 5556Example Code and Data Size: These are the sizes for the OS-independent 5557acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5558debug version of the code includes the debug output trace mechanism and 5559has a 5560much larger code and data size. 5561 5562 Previous Release: 5563 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 5564 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total 5565 Current Release: 5566 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total 5567 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total 5568 55692) iASL Compiler/Disassembler and Tools: 5570 5571iASL/Disassembler: Added a new option (-da, "disassemble all") to load 5572the 5573namespace from and disassemble an entire group of AML files. Useful for 5574loading all of the AML tables for a given machine (DSDT, SSDT1...SSDTn) 5575and 5576disassembling with one simple command. ACPICA BZ 865. Lin Ming. 5577 5578iASL: Allow multiple invocations of -e option. This change allows 5579multiple 5580uses of -e on the command line: "-e ssdt1.dat -e ssdt2.dat". ACPICA BZ 5581834. 5582Lin Ming. 5583 5584---------------------------------------- 558502 July 2010. Summary of changes for version 20100702: 5586 55871) ACPI CA Core Subsystem: 5588 5589Implemented several updates to the recently added GPE reference count 5590support. The model for "wake" GPEs is changing to give the host OS 5591complete 5592control of these GPEs. Eventually, the ACPICA core will not execute any 5593_PRW 5594methods, since the host already must execute them. Also, additional 5595changes 5596were made to help ensure that the reference counts are kept in proper 5597synchronization with reality. Rafael J. Wysocki. 5598 55991) Ensure that GPEs are not enabled twice during initialization. 56002) Ensure that GPE enable masks stay in sync with the reference count. 56013) Do not inadvertently enable GPEs when writing GPE registers. 56024) Remove the internal wake reference counter and add new AcpiGpeWakeup 5603interface. This interface will set or clear individual GPEs for wakeup. 56045) Remove GpeType argument from AcpiEnable and AcpiDisable. These 5605interfaces 5606are now used for "runtime" GPEs only. 5607 5608Changed the behavior of the GPE install/remove handler interfaces. The 5609GPE 5610is 5611no longer disabled during this process, as it was found to cause problems 5612on 5613some machines. Rafael J. Wysocki. 5614 5615Reverted a change introduced in version 20100528 to enable Embedded 5616Controller multi-byte transfers. This change was found to cause problems 5617with 5618Index Fields and possibly Bank Fields. It will be reintroduced when these 5619problems have been resolved. 5620 5621Fixed a problem with references to Alias objects within Package Objects. 5622A 5623reference to an Alias within the definition of a Package was not always 5624resolved properly. Aliases to objects like Processors, Thermal zones, 5625etc. 5626were resolved to the actual object instead of a reference to the object 5627as 5628it 5629should be. Package objects are only allowed to contain integer, string, 5630buffer, package, and reference objects. Redhat bugzilla 608648. 5631 5632Example Code and Data Size: These are the sizes for the OS-independent 5633acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5634debug version of the code includes the debug output trace mechanism and 5635has a 5636much larger code and data size. 5637 5638 Previous Release: 5639 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 5640 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total 5641 Current Release: 5642 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 5643 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total 5644 56452) iASL Compiler/Disassembler and Tools: 5646 5647iASL: Implemented a new compiler subsystem to allow definition and 5648compilation of the non-AML ACPI tables such as FADT, MADT, SRAT, etc. 5649These 5650are called "ACPI Data Tables", and the new compiler is the "Data Table 5651Compiler". This compiler is intended to simplify the existing error-prone 5652process of creating these tables for the BIOS, as well as allowing the 5653disassembly, modification, recompilation, and override of existing ACPI 5654data 5655tables. See the iASL User Guide for detailed information. 5656 5657iASL: Implemented a new Template Generator option in support of the new 5658Data 5659Table Compiler. This option will create examples of all known ACPI tables 5660that can be used as the basis for table development. See the iASL 5661documentation and the -T option. 5662 5663Disassembler and headers: Added support for the WDDT ACPI table (Watchdog 5664Descriptor Table). 5665 5666Updated the Linux makefiles for iASL and AcpiExec to place the generated 5667object files in the local directory so that there can be no collisions 5668between the shared files between them that are generated with different 5669options. 5670 5671Added support for Mac OS X in the Unix OSL used for iASL and AcpiExec. 5672Use 5673the #define __APPLE__ to enable this support. 5674 5675---------------------------------------- 567628 May 2010. Summary of changes for version 20100528: 5677 5678Note: The ACPI 4.0a specification was released on April 5, 2010 and is 5679available at www.acpi.info. This is primarily an errata release. 5680 56811) ACPI CA Core Subsystem: 5682 5683Undefined ACPI tables: We are looking for the definitions for the 5684following 5685ACPI tables that have been seen in the field: ATKG, IEIT, GSCI. 5686 5687Implemented support to enable multi-byte transfers for Embedded 5688Controller 5689(EC) operation regions. Previously, the maximum data size passed to the 5690EC 5691operation region handler was a single byte. There are often EC Fields 5692larger 5693than one byte that need to be transferred, and it is useful for the EC 5694driver 5695to lock these as a single transaction. This change enables single 5696transfers 5697larger than 8 bits. This effectively changes the access to the EC space 5698from 5699ByteAcc to AnyAcc, and will probably require changes to the host OS 5700Embedded 5701Controller driver to enable 16/32/64/256-bit transfers in addition to 8- 5702bit 5703transfers. Alexey Starikovskiy, Lin Ming 5704 5705Implemented a performance enhancement for namespace search and access. 5706This 5707change enhances the performance of namespace searches and walks by adding 5708a 5709backpointer to the parent in each namespace node. On large namespaces, 5710this 5711change can improve overall ACPI performance by up to 9X. Adding a pointer 5712to 5713each namespace node increases the overall size of the internal namespace 5714by 5715about 5%, since each namespace entry usually consists of both a namespace 5716node and an ACPI operand object. However, this is the first growth of the 5717namespace in ten years. ACPICA bugzilla 817. Alexey Starikovskiy. 5718 5719Implemented a performance optimization that reduces the number of 5720namespace 5721walks. On control method exit, only walk the namespace if the method is 5722known 5723to have created namespace objects outside of its local scope. Previously, 5724the 5725entire namespace was traversed on each control method exit. This change 5726can 5727improve overall ACPI performance by up to 3X. Alexey Starikovskiy, Bob 5728Moore. 5729 5730Added support to truncate I/O addresses to 16 bits for Windows 5731compatibility. 5732Some ASL code has been seen in the field that inadvertently has bits set 5733above bit 15. This feature is optional and is enabled if the BIOS 5734requests 5735any Windows OSI strings. It can also be enabled by the host OS. Matthew 5736Garrett, Bob Moore. 5737 5738Added support to limit the maximum time for the ASL Sleep() operator. To 5739prevent accidental deep sleeps, limit the maximum time that Sleep() will 5740actually sleep. Configurable, the default maximum is two seconds. ACPICA 5741bugzilla 854. 5742 5743Added run-time validation support for the _WDG and_WED Microsoft 5744predefined 5745methods. These objects are defined by "Windows Instrumentation", and are 5746not 5747part of the ACPI spec. ACPICA BZ 860. 5748 5749Expanded all statistic counters used during namespace and device 5750initialization from 16 to 32 bits in order to support very large 5751namespaces. 5752 5753Replaced all instances of %d in printf format specifiers with %u since 5754nearly 5755all integers in ACPICA are unsigned. 5756 5757Fixed the exception namestring for AE_WAKE_ONLY_GPE. Was incorrectly 5758returned 5759as AE_NO_HANDLER. 5760 5761Example Code and Data Size: These are the sizes for the OS-independent 5762acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5763debug version of the code includes the debug output trace mechanism and 5764has a 5765much larger code and data size. 5766 5767 Previous Release: 5768 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total 5769 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total 5770 Current Release: 5771 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 5772 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total 5773 57742) iASL Compiler/Disassembler and Tools: 5775 5776iASL: Added compiler support for the _WDG and_WED Microsoft predefined 5777methods. These objects are defined by "Windows Instrumentation", and are 5778not 5779part of the ACPI spec. ACPICA BZ 860. 5780 5781AcpiExec: added option to disable the memory tracking mechanism. The -dt 5782option will disable the tracking mechanism, which improves performance 5783considerably. 5784 5785AcpiExec: Restructured the command line options into -d (disable) and -e 5786(enable) options. 5787 5788---------------------------------------- 578928 April 2010. Summary of changes for version 20100428: 5790 57911) ACPI CA Core Subsystem: 5792 5793Implemented GPE support for dynamically loaded ACPI tables. For all GPEs, 5794including FADT-based and GPE Block Devices, execute any _PRW methods in 5795the 5796new table, and process any _Lxx/_Exx GPE methods in the new table. Any 5797runtime GPE that is referenced by an _Lxx/_Exx method in the new table is 5798immediately enabled. Handles the FADT-defined GPEs as well as GPE Block 5799Devices. Provides compatibility with other ACPI implementations. Two new 5800files added, evgpeinit.c and evgpeutil.c. ACPICA BZ 833. Lin Ming, Bob 5801Moore. 5802 5803Fixed a regression introduced in version 20100331 within the table 5804manager 5805where initial table loading could fail. This was introduced in the fix 5806for 5807AcpiReallocateRootTable. Also, renamed some of fields in the table 5808manager 5809data structures to clarify their meaning and use. 5810 5811Fixed a possible allocation overrun during internal object copy in 5812AcpiUtCopySimpleObject. The original code did not correctly handle the 5813case 5814where the object to be copied was a namespace node. Lin Ming. ACPICA BZ 5815847. 5816 5817Updated the allocation dump routine, AcpiUtDumpAllocation and fixed a 5818possible access beyond end-of-allocation. Also, now fully validate 5819descriptor 5820(size and type) before output. Lin Ming, Bob Moore. ACPICA BZ 847 5821 5822Example Code and Data Size: These are the sizes for the OS-independent 5823acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5824debug version of the code includes the debug output trace mechanism and 5825has a 5826much larger code and data size. 5827 5828 Previous Release: 5829 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total 5830 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total 5831 Current Release: 5832 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total 5833 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total 5834 58352) iASL Compiler/Disassembler and Tools: 5836 5837iASL: Implemented Min/Max/Len/Gran validation for address resource 5838descriptors. This change implements validation for the address fields 5839that 5840are common to all address-type resource descriptors. These checks are 5841implemented: Checks for valid Min/Max, length within the Min/Max window, 5842valid granularity, Min/Max a multiple of granularity, and _MIF/_MAF as 5843per 5844table 6-40 in the ACPI 4.0a specification. Also split the large 5845aslrestype1.c 5846and aslrestype2.c files into five new files. ACPICA BZ 840. 5847 5848iASL: Added support for the _Wxx predefined names. This support was 5849missing 5850and these names were not recognized by the compiler as valid predefined 5851names. ACPICA BZ 851. 5852 5853iASL: Added an error for all predefined names that are defined to return 5854no 5855value and thus must be implemented as Control Methods. These include all 5856of 5857the _Lxx, _Exx, _Wxx, and _Qxx names, as well as some other miscellaneous 5858names such as _DIS, _INI, _IRC, _OFF, _ON, and _PSx. ACPICA BZ 850, 856. 5859 5860iASL: Implemented the -ts option to emit hex AML data in ASL format, as 5861an 5862ASL Buffer. Allows ACPI tables to be easily included within ASL files, to 5863be 5864dynamically loaded via the Load() operator. Also cleaned up output for 5865the 5866- 5867ta and -tc options. ACPICA BZ 853. 5868 5869Tests: Added a new file with examples of extended iASL error checking. 5870Demonstrates the advanced error checking ability of the iASL compiler. 5871Available at tests/misc/badcode.asl. 5872 5873---------------------------------------- 587431 March 2010. Summary of changes for version 20100331: 5875 58761) ACPI CA Core Subsystem: 5877 5878Completed a major update for the GPE support in order to improve support 5879for 5880shared GPEs and to simplify both host OS and ACPICA code. Added a 5881reference 5882count mechanism to support shared GPEs that require multiple device 5883drivers. 5884Several external interfaces have changed. One external interface has been 5885removed. One new external interface was added. Most of the GPE external 5886interfaces now use the GPE spinlock instead of the events mutex (and the 5887Flags parameter for many GPE interfaces has been removed.) See the 5888updated 5889ACPICA Programmer Reference for details. Matthew Garrett, Bob Moore, 5890Rafael 5891Wysocki. ACPICA BZ 831. 5892 5893Changed: 5894 AcpiEnableGpe, AcpiDisableGpe, AcpiClearGpe, AcpiGetGpeStatus 5895Removed: 5896 AcpiSetGpeType 5897New: 5898 AcpiSetGpe 5899 5900Implemented write support for DataTable operation regions. These regions 5901are 5902defined via the DataTableRegion() operator. Previously, only read support 5903was 5904implemented. The ACPI specification allows DataTableRegions to be 5905read/write, 5906however. 5907 5908Implemented a new subsystem option to force a copy of the DSDT to local 5909memory. Optionally copy the entire DSDT to local memory (instead of 5910simply 5911mapping it.) There are some (albeit very rare) BIOSs that corrupt or 5912replace 5913the original DSDT, creating the need for this option. Default is FALSE, 5914do 5915not copy the DSDT. 5916 5917Implemented detection of a corrupted or replaced DSDT. This change adds 5918support to detect a DSDT that has been corrupted and/or replaced from 5919outside 5920the OS (by firmware). This is typically catastrophic for the system, but 5921has 5922been seen on some machines. Once this problem has been detected, the DSDT 5923copy option can be enabled via system configuration. Lin Ming, Bob Moore. 5924 5925Fixed two problems with AcpiReallocateRootTable during the root table 5926copy. 5927When copying the root table to the new allocation, the length used was 5928incorrect. The new size was used instead of the current table size, 5929meaning 5930too much data was copied. Also, the count of available slots for ACPI 5931tables 5932was not set correctly. Alexey Starikovskiy, Bob Moore. 5933 5934Example Code and Data Size: These are the sizes for the OS-independent 5935acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5936debug version of the code includes the debug output trace mechanism and 5937has a 5938much larger code and data size. 5939 5940 Previous Release: 5941 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total 5942 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total 5943 Current Release: 5944 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total 5945 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total 5946 59472) iASL Compiler/Disassembler and Tools: 5948 5949iASL: Implement limited typechecking for values returned from predefined 5950control methods. The type of any returned static (unnamed) object is now 5951validated. For example, Return(1). ACPICA BZ 786. 5952 5953iASL: Fixed a predefined name object verification regression. Fixes a 5954problem 5955introduced in version 20100304. An error is incorrectly generated if a 5956predefined name is declared as a static named object with a value defined 5957using the keywords "Zero", "One", or "Ones". Lin Ming. 5958 5959iASL: Added Windows 7 support for the -g option (get local ACPI tables) 5960by 5961reducing the requested registry access rights. ACPICA BZ 842. 5962 5963Disassembler: fixed a possible fault when generating External() 5964statements. 5965Introduced in commit ae7d6fd: Properly handle externals with parent- 5966prefix 5967(carat). Fixes a string length allocation calculation. Lin Ming. 5968 5969---------------------------------------- 597004 March 2010. Summary of changes for version 20100304: 5971 59721) ACPI CA Core Subsystem: 5973 5974Fixed a possible problem with the AML Mutex handling function 5975AcpiExReleaseMutex where the function could fault under the very rare 5976condition when the interpreter has blocked, the interpreter lock is 5977released, 5978the interpreter is then reentered via the same thread, and attempts to 5979acquire an AML mutex that was previously acquired. FreeBSD report 140979. 5980Lin 5981Ming. 5982 5983Implemented additional configuration support for the AML "Debug Object". 5984Output from the debug object can now be enabled via a global variable, 5985AcpiGbl_EnableAmlDebugObject. This will assist with remote machine 5986debugging. 5987This debug output is now available in the release version of ACPICA 5988instead 5989of just the debug version. Also, the entire debug output module can now 5990be 5991configured out of the ACPICA build if desired. One new file added, 5992executer/exdebug.c. Lin Ming, Bob Moore. 5993 5994Added header support for the ACPI MCHI table (Management Controller Host 5995Interface Table). This table was added in ACPI 4.0, but the defining 5996document 5997has only recently become available. 5998 5999Standardized output of integer values for ACPICA warnings/errors. Always 6000use 60010x prefix for hex output, always use %u for unsigned integer decimal 6002output. 6003Affects ACPI_INFO, ACPI_ERROR, ACPI_EXCEPTION, and ACPI_WARNING (about 6004400 6005invocations.) These invocations were converted from the original 6006ACPI_DEBUG_PRINT invocations and were not consistent. ACPICA BZ 835. 6007 6008Example Code and Data Size: These are the sizes for the OS-independent 6009acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6010debug version of the code includes the debug output trace mechanism and 6011has a 6012much larger code and data size. 6013 6014 Previous Release: 6015 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total 6016 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total 6017 Current Release: 6018 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total 6019 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total 6020 60212) iASL Compiler/Disassembler and Tools: 6022 6023iASL: Implemented typechecking support for static (non-control method) 6024predefined named objects that are declared with the Name() operator. For 6025example, the type of this object is now validated to be of type Integer: 6026Name(_BBN, 1). This change migrates the compiler to using the core 6027predefined 6028name table instead of maintaining a local version. Added a new file, 6029aslpredef.c. ACPICA BZ 832. 6030 6031Disassembler: Added support for the ACPI 4.0 MCHI table. 6032 6033---------------------------------------- 603421 January 2010. Summary of changes for version 20100121: 6035 60361) ACPI CA Core Subsystem: 6037 6038Added the 2010 copyright to all module headers and signons. This affects 6039virtually every file in the ACPICA core subsystem, the iASL compiler, the 6040tools/utilities, and the test suites. 6041 6042Implemented a change to the AcpiGetDevices interface to eliminate 6043unnecessary 6044invocations of the _STA method. In the case where a specific _HID is 6045requested, do not run _STA until a _HID match is found. This eliminates 6046potentially dozens of _STA calls during a search for a particular 6047device/HID, 6048which in turn can improve boot times. ACPICA BZ 828. Lin Ming. 6049 6050Implemented an additional repair for predefined method return values. 6051Attempt 6052to repair unexpected NULL elements within returned Package objects. 6053Create 6054an 6055Integer of value zero, a NULL String, or a zero-length Buffer as 6056appropriate. 6057ACPICA BZ 818. Lin Ming, Bob Moore. 6058 6059Removed the obsolete ACPI_INTEGER data type. This type was introduced as 6060the 6061code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0 6062(with 606364-bit AML integers). It is now obsolete and this change removes it from 6064the 6065ACPICA code base, replaced by UINT64. The original typedef has been 6066retained 6067for now for compatibility with existing device driver code. ACPICA BZ 6068824. 6069 6070Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field 6071in 6072the parse tree object. 6073 6074Added additional warning options for the gcc-4 generation. Updated the 6075source 6076accordingly. This includes some code restructuring to eliminate 6077unreachable 6078code, elimination of some gotos, elimination of unused return values, 6079some 6080additional casting, and removal of redundant declarations. 6081 6082Example Code and Data Size: These are the sizes for the OS-independent 6083acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6084debug version of the code includes the debug output trace mechanism and 6085has a 6086much larger code and data size. 6087 6088 Previous Release: 6089 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 6090 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 6091 Current Release: 6092 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total 6093 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total 6094 60952) iASL Compiler/Disassembler and Tools: 6096 6097No functional changes for this release. 6098 6099---------------------------------------- 610014 December 2009. Summary of changes for version 20091214: 6101 61021) ACPI CA Core Subsystem: 6103 6104Enhanced automatic data type conversions for predefined name repairs. 6105This 6106change expands the automatic repairs/conversions for predefined name 6107return 6108values to make Integers, Strings, and Buffers fully interchangeable. 6109Also, 6110a 6111Buffer can be converted to a Package of Integers if necessary. The 6112nsrepair.c 6113module was completely restructured. Lin Ming, Bob Moore. 6114 6115Implemented automatic removal of null package elements during predefined 6116name 6117repairs. This change will automatically remove embedded and trailing NULL 6118package elements from returned package objects that are defined to 6119contain 6120a 6121variable number of sub-packages. The driver is then presented with a 6122package 6123with no null elements to deal with. ACPICA BZ 819. 6124 6125Implemented a repair for the predefined _FDE and _GTM names. The expected 6126return value for both names is a Buffer of 5 DWORDs. This repair fixes 6127two 6128possible problems (both seen in the field), where a package of integers 6129is 6130returned, or a buffer of BYTEs is returned. With assistance from Jung-uk 6131Kim. 6132 6133Implemented additional module-level code support. This change will 6134properly 6135execute module-level code that is not at the root of the namespace (under 6136a 6137Device object, etc.). Now executes the code within the current scope 6138instead 6139of the root. ACPICA BZ 762. Lin Ming. 6140 6141Fixed possible mutex acquisition errors when running _REG methods. Fixes 6142a 6143problem where mutex errors can occur when running a _REG method that is 6144in 6145the same scope as a method-defined operation region or an operation 6146region 6147under a module-level IF block. This type of code is rare, so the problem 6148has 6149not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore. 6150 6151Fixed a possible memory leak during module-level code execution. An 6152object 6153could be leaked for each block of executed module-level code if the 6154interpreter slack mode is enabled This change deletes any implicitly 6155returned 6156object from the module-level code block. Lin Ming. 6157 6158Removed messages for successful predefined repair(s). The repair 6159mechanism 6160was considered too wordy. Now, messages are only unconditionally emitted 6161if 6162the return object cannot be repaired. Existing messages for successful 6163repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ 6164827. 6165 6166Example Code and Data Size: These are the sizes for the OS-independent 6167acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6168debug version of the code includes the debug output trace mechanism and 6169has a 6170much larger code and data size. 6171 6172 Previous Release: 6173 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 6174 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 6175 Current Release: 6176 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 6177 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 6178 61792) iASL Compiler/Disassembler and Tools: 6180 6181iASL: Fixed a regression introduced in 20091112 where intermediate .SRC 6182files 6183were no longer automatically removed at the termination of the compile. 6184 6185acpiexec: Implemented the -f option to specify default region fill value. 6186This option specifies the value used to initialize buffers that simulate 6187operation regions. Default value is zero. Useful for debugging problems 6188that 6189depend on a specific initial value for a region or field. 6190 6191---------------------------------------- 619212 November 2009. Summary of changes for version 20091112: 6193 61941) ACPI CA Core Subsystem: 6195 6196Implemented a post-order callback to AcpiWalkNamespace. The existing 6197interface only has a pre-order callback. This change adds an additional 6198parameter for a post-order callback which will be more useful for bus 6199scans. 6200ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference. 6201 6202Modified the behavior of the operation region memory mapping cache for 6203SystemMemory. Ensure that the memory mappings created for operation 6204regions 6205do not cross 4K page boundaries. Crossing a page boundary while mapping 6206regions can cause kernel warnings on some hosts if the pages have 6207different 6208attributes. Such regions are probably BIOS bugs, and this is the 6209workaround. 6210Linux BZ 14445. Lin Ming. 6211 6212Implemented an automatic repair for predefined methods that must return 6213sorted lists. This change will repair (by sorting) packages returned by 6214_ALR, 6215_PSS, and _TSS. Drivers can now assume that the packages are correctly 6216sorted 6217and do not contain NULL package elements. Adds one new file, 6218namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore. 6219 6220Fixed a possible fault during predefined name validation if a return 6221Package 6222object contains NULL elements. Also adds a warning if a NULL element is 6223followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement 6224may 6225include repair or removal of all such NULL elements where possible. 6226 6227Implemented additional module-level executable AML code support. This 6228change 6229will execute module-level code that is not at the root of the namespace 6230(under a Device object, etc.) at table load time. Module-level executable 6231AML 6232code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming. 6233 6234Implemented a new internal function to create Integer objects. This 6235function 6236simplifies miscellaneous object creation code. ACPICA BZ 823. 6237 6238Reduced the severity of predefined repair messages, Warning to Info. 6239Since 6240the object was successfully repaired, a warning is too severe. Reduced to 6241an 6242info message for now. These messages may eventually be changed to debug- 6243only. 6244ACPICA BZ 812. 6245 6246Example Code and Data Size: These are the sizes for the OS-independent 6247acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6248debug version of the code includes the debug output trace mechanism and 6249has a 6250much larger code and data size. 6251 6252 Previous Release: 6253 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 6254 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 6255 Current Release: 6256 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 6257 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 6258 62592) iASL Compiler/Disassembler and Tools: 6260 6261iASL: Implemented Switch() with While(1) so that Break works correctly. 6262This 6263change correctly implements the Switch operator with a surrounding 6264While(1) 6265so that the Break operator works as expected. ACPICA BZ 461. Lin Ming. 6266 6267iASL: Added a message if a package initializer list is shorter than 6268package 6269length. Adds a new remark for a Package() declaration if an initializer 6270list 6271exists, but is shorter than the declared length of the package. Although 6272technically legal, this is probably a coding error and it is seen in the 6273field. ACPICA BZ 815. Lin Ming, Bob Moore. 6274 6275iASL: Fixed a problem where the compiler could fault after the maximum 6276number 6277of errors was reached (200). 6278 6279acpixtract: Fixed a possible warning for pointer cast if the compiler 6280warning 6281level set very high. 6282 6283---------------------------------------- 628413 October 2009. Summary of changes for version 20091013: 6285 62861) ACPI CA Core Subsystem: 6287 6288Fixed a problem where an Operation Region _REG method could be executed 6289more 6290than once. If a custom address space handler is installed by the host 6291before 6292the "initialize operation regions" phase of the ACPICA initialization, 6293any 6294_REG methods for that address space could be executed twice. This change 6295fixes the problem. ACPICA BZ 427. Lin Ming. 6296 6297Fixed a possible memory leak for the Scope() ASL operator. When the exact 6298invocation of "Scope(\)" is executed (change scope to root), one internal 6299operand object was leaked. Lin Ming. 6300 6301Implemented a run-time repair for the _MAT predefined method. If the _MAT 6302return value is defined as a Field object in the AML, and the field 6303size is less than or equal to the default width of an integer (32 or 630464),_MAT 6305can incorrectly return an Integer instead of a Buffer. ACPICA now 6306automatically repairs this problem. ACPICA BZ 810. 6307 6308Implemented a run-time repair for the _BIF and _BIX predefined methods. 6309The 6310"OEM Information" field is often incorrectly returned as an Integer with 6311value zero if the field is not supported by the platform. This is due to 6312an 6313ambiguity in the ACPI specification. The field should always be a string. 6314ACPICA now automatically repairs this problem by returning a NULL string 6315within the returned Package. ACPICA BZ 807. 6316 6317Example Code and Data Size: These are the sizes for the OS-independent 6318acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6319debug version of the code includes the debug output trace mechanism and 6320has a 6321much larger code and data size. 6322 6323 Previous Release: 6324 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 6325 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 6326 Current Release: 6327 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 6328 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 6329 63302) iASL Compiler/Disassembler and Tools: 6331 6332Disassembler: Fixed a problem where references to external symbols that 6333contained one or more parent-prefixes (carats) were not handled 6334correctly, 6335possibly causing a fault. ACPICA BZ 806. Lin Ming. 6336 6337Disassembler: Restructured the code so that all functions that handle 6338external symbols are in a single module. One new file is added, 6339common/dmextern.c. 6340 6341AML Debugger: Added a max count argument for the Batch command (which 6342executes multiple predefined methods within the namespace.) 6343 6344iASL: Updated the compiler documentation (User Reference.) Available at 6345http://www.acpica.org/documentation/. ACPICA BZ 750. 6346 6347AcpiXtract: Updated for Lint and other formatting changes. Close all open 6348files. 6349 6350---------------------------------------- 635103 September 2009. Summary of changes for version 20090903: 6352 63531) ACPI CA Core Subsystem: 6354 6355For Windows Vista compatibility, added the automatic execution of an _INI 6356method located at the namespace root (\_INI). This method is executed at 6357table load time. This support is in addition to the automatic execution 6358of 6359\_SB._INI. Lin Ming. 6360 6361Fixed a possible memory leak in the interpreter for AML package objects 6362if 6363the package initializer list is longer than the defined size of the 6364package. 6365This apparently can only happen if the BIOS changes the package size on 6366the 6367fly (seen in a _PSS object), as ASL compilers do not allow this. The 6368interpreter will truncate the package to the defined size (and issue an 6369error 6370message), but previously could leave the extra objects undeleted if they 6371were 6372pre-created during the argument processing (such is the case if the 6373package 6374consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805. 6375 6376Fixed a problem seen when a Buffer or String is stored to itself via ASL. 6377This has been reported in the field. Previously, ACPICA would zero out 6378the 6379buffer/string. Now, the operation is treated as a noop. Provides Windows 6380compatibility. ACPICA BZ 803. Lin Ming. 6381 6382Removed an extraneous error message for ASL constructs of the form 6383Store(LocalX,LocalX) when LocalX is uninitialized. These curious 6384statements 6385are seen in many BIOSs and are once again treated as NOOPs and no error 6386is 6387emitted when they are encountered. ACPICA BZ 785. 6388 6389Fixed an extraneous warning message if a _DSM reserved method returns a 6390Package object. _DSM can return any type of object, so validation on the 6391return type cannot be performed. ACPICA BZ 802. 6392 6393Example Code and Data Size: These are the sizes for the OS-independent 6394acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6395debug version of the code includes the debug output trace mechanism and 6396has a 6397much larger code and data size. 6398 6399 Previous Release: 6400 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 6401 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 6402 Current Release: 6403 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 6404 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 6405 64062) iASL Compiler/Disassembler and Tools: 6407 6408iASL: Fixed a problem with the use of the Alias operator and Resource 6409Templates. The correct alias is now constructed and no error is emitted. 6410ACPICA BZ 738. 6411 6412iASL: Implemented the -I option to specify additional search directories 6413for 6414include files. Allows multiple additional search paths for include files. 6415Directories are searched in the order specified on the command line 6416(after 6417the local directory is searched.) ACPICA BZ 800. 6418 6419iASL: Fixed a problem where the full pathname for include files was not 6420emitted for warnings/errors. This caused the IDE support to not work 6421properly. ACPICA BZ 765. 6422 6423iASL: Implemented the -@ option to specify a Windows-style response file 6424containing additional command line options. ACPICA BZ 801. 6425 6426AcpiExec: Added support to load multiple AML files simultaneously (such 6427as 6428a 6429DSDT and multiple SSDTs). Also added support for wildcards within the AML 6430pathname. These features allow all machine tables to be easily loaded and 6431debugged together. ACPICA BZ 804. 6432 6433Disassembler: Added missing support for disassembly of HEST table Error 6434Bank 6435subtables. 6436 6437---------------------------------------- 643830 July 2009. Summary of changes for version 20090730: 6439 6440The ACPI 4.0 implementation for ACPICA is complete with this release. 6441 64421) ACPI CA Core Subsystem: 6443 6444ACPI 4.0: Added header file support for all new and changed ACPI tables. 6445Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are 6446new 6447for ACPI 4.0, but have previously been supported in ACPICA are: CPEP, 6448BERT, 6449EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT. 6450There 6451have been some ACPI 4.0 changes to other existing tables. Split the large 6452actbl1.h header into the existing actbl2.h header. ACPICA BZ 774. 6453 6454ACPI 4.0: Implemented predefined name validation for all new names. There 6455are 645631 new names in ACPI 4.0. The predefined validation module was split into 6457two 6458files. The new file is namespace/nsrepair.c. ACPICA BZ 770. 6459 6460Implemented support for so-called "module-level executable code". This is 6461executable AML code that exists outside of any control method and is 6462intended 6463to be executed at table load time. Although illegal since ACPI 2.0, this 6464type 6465of code still exists and is apparently still being created. Blocks of 6466this 6467code are now detected and executed as intended. Currently, the code 6468blocks 6469must exist under either an If, Else, or While construct; these are the 6470typical cases seen in the field. ACPICA BZ 762. Lin Ming. 6471 6472Implemented an automatic dynamic repair for predefined names that return 6473nested Package objects. This applies to predefined names that are defined 6474to 6475return a variable-length Package of sub-packages. If the number of sub- 6476packages is one, BIOS code is occasionally seen that creates a simple 6477single 6478package with no sub-packages. This code attempts to fix the problem by 6479wrapping a new package object around the existing package. These methods 6480can 6481be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA 6482BZ 6483790. 6484 6485Fixed a regression introduced in 20090625 for the AcpiGetDevices 6486interface. 6487The _HID/_CID matching was broken and no longer matched IDs correctly. 6488ACPICA 6489BZ 793. 6490 6491Fixed a problem with AcpiReset where the reset would silently fail if the 6492register was one of the protected I/O ports. AcpiReset now bypasses the 6493port 6494validation mechanism. This may eventually be driven into the 6495AcpiRead/Write 6496interfaces. 6497 6498Fixed a regression related to the recent update of the AcpiRead/Write 6499interfaces. A sleep/suspend could fail if the optional PM2 Control 6500register 6501does not exist during an attempt to write the Bus Master Arbitration bit. 6502(However, some hosts already delete the code that writes this bit, and 6503the 6504code may in fact be obsolete at this date.) ACPICA BZ 799. 6505 6506Fixed a problem where AcpiTerminate could fault if inadvertently called 6507twice 6508in succession. ACPICA BZ 795. 6509 6510Example Code and Data Size: These are the sizes for the OS-independent 6511acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6512debug version of the code includes the debug output trace mechanism and 6513has a 6514much larger code and data size. 6515 6516 Previous Release: 6517 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 6518 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 6519 Current Release: 6520 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 6521 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 6522 65232) iASL Compiler/Disassembler and Tools: 6524 6525ACPI 4.0: Implemented disassembler support for all new ACPI tables and 6526changes to existing tables. ACPICA BZ 775. 6527 6528---------------------------------------- 652925 June 2009. Summary of changes for version 20090625: 6530 6531The ACPI 4.0 Specification was released on June 16 and is available at 6532www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will 6533continue for the next few releases. 6534 65351) ACPI CA Core Subsystem: 6536 6537ACPI 4.0: Implemented interpreter support for the IPMI operation region 6538address space. Includes support for bi-directional data buffers and an 6539IPMI 6540address space handler (to be installed by an IPMI device driver.) ACPICA 6541BZ 6542773. Lin Ming. 6543 6544ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT. 6545Includes 6546support in both the header files and the disassembler. 6547 6548Completed a major update for the AcpiGetObjectInfo external interface. 6549Changes include: 6550 - Support for variable, unlimited length HID, UID, and CID strings. 6551 - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA, 6552etc.) 6553 - Call the _SxW power methods on behalf of a device object. 6554 - Determine if a device is a PCI root bridge. 6555 - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO. 6556These changes will require an update to all callers of this interface. 6557See 6558the updated ACPICA Programmer Reference for details. One new source file 6559has 6560been added - utilities/utids.c. ACPICA BZ 368, 780. 6561 6562Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit 6563transfers. The Value parameter has been extended from 32 bits to 64 bits 6564in 6565order to support new ACPI 4.0 tables. These changes will require an 6566update 6567to 6568all callers of these interfaces. See the ACPICA Programmer Reference for 6569details. ACPICA BZ 768. 6570 6571Fixed several problems with AcpiAttachData. The handler was not invoked 6572when 6573the host node was deleted. The data sub-object was not automatically 6574deleted 6575when the host node was deleted. The interface to the handler had an 6576unused 6577parameter, this was removed. ACPICA BZ 778. 6578 6579Enhanced the function that dumps ACPI table headers. All non-printable 6580characters in the string fields are now replaced with '?' (Signature, 6581OemId, 6582OemTableId, and CompilerId.) ACPI tables with non-printable characters in 6583these fields are occasionally seen in the field. ACPICA BZ 788. 6584 6585Fixed a problem with predefined method repair code where the code that 6586attempts to repair/convert an object of incorrect type is only executed 6587on 6588the first time the predefined method is called. The mechanism that 6589disables 6590warnings on subsequent calls was interfering with the repair mechanism. 6591ACPICA BZ 781. 6592 6593Fixed a possible memory leak in the predefined validation/repair code 6594when 6595a 6596buffer is automatically converted to an expected string object. 6597 6598Removed obsolete 16-bit files from the distribution and from the current 6599git 6600tree head. ACPICA BZ 776. 6601 6602Example Code and Data Size: These are the sizes for the OS-independent 6603acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6604debug version of the code includes the debug output trace mechanism and 6605has a 6606much larger code and data size. 6607 6608 Previous Release: 6609 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 6610 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 6611 Current Release: 6612 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 6613 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 6614 66152) iASL Compiler/Disassembler and Tools: 6616 6617ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI 6618operation region keyword. ACPICA BZ 771, 772. Lin Ming. 6619 6620ACPI 4.0: iASL - implemented compile-time validation support for all new 6621predefined names and control methods (31 total). ACPICA BZ 769. 6622 6623---------------------------------------- 662421 May 2009. Summary of changes for version 20090521: 6625 66261) ACPI CA Core Subsystem: 6627 6628Disabled the preservation of the SCI enable bit in the PM1 control 6629register. 6630The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification 6631to 6632be 6633a "preserved" bit - "OSPM always preserves this bit position", section 66344.7.3.2.1. However, some machines fail if this bit is in fact preserved 6635because the bit needs to be explicitly set by the OS as a workaround. No 6636machines fail if the bit is not preserved. Therefore, ACPICA no longer 6637attempts to preserve this bit. 6638 6639Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or 6640incorrectly formed _PRT package could cause a fault. Added validation to 6641ensure that each package element is actually a sub-package. 6642 6643Implemented a new interface to install or override a single control 6644method, 6645AcpiInstallMethod. This interface is useful when debugging in order to 6646repair 6647an existing method or to install a missing method without having to 6648override 6649the entire ACPI table. See the ACPICA Programmer Reference for use and 6650examples. Lin Ming, Bob Moore. 6651 6652Fixed several reference count issues with the DdbHandle object that is 6653created from a Load or LoadTable operator. Prevent premature deletion of 6654the 6655object. Also, mark the object as invalid once the table has been 6656unloaded. 6657This is needed because the handle itself may not be deleted after the 6658table 6659unload, depending on whether it has been stored in a named object by the 6660caller. Lin Ming. 6661 6662Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple 6663mutexes of the same sync level are acquired but then not released in 6664strict 6665opposite order, the internally maintained Current Sync Level becomes 6666confused 6667and can cause subsequent execution errors. ACPICA BZ 471. 6668 6669Changed the allowable release order for ASL mutex objects. The ACPI 4.0 6670specification has been changed to make the SyncLevel for mutex objects 6671more 6672useful. When releasing a mutex, the SyncLevel of the mutex must now be 6673the 6674same as the current sync level. This makes more sense than the previous 6675rule 6676(SyncLevel less than or equal). This change updates the code to match the 6677specification. 6678 6679Fixed a problem with the local version of the AcpiOsPurgeCache function. 6680The 6681(local) cache must be locked during all cache object deletions. Andrew 6682Baumann. 6683 6684Updated the Load operator to use operation region interfaces. This 6685replaces 6686direct memory mapping with region access calls. Now, all region accesses 6687go 6688through the installed region handler as they should. 6689 6690Simplified and optimized the NsGetNextNode function. Reduced parameter 6691count 6692and reduced code for this frequently used function. 6693 6694Example Code and Data Size: These are the sizes for the OS-independent 6695acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6696debug version of the code includes the debug output trace mechanism and 6697has a 6698much larger code and data size. 6699 6700 Previous Release: 6701 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 6702 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 6703 Current Release: 6704 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 6705 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 6706 67072) iASL Compiler/Disassembler and Tools: 6708 6709Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some 6710problems 6711with sub-table disassembly and handling invalid sub-tables. Attempt 6712recovery 6713after an invalid sub-table ID. 6714 6715---------------------------------------- 671622 April 2009. Summary of changes for version 20090422: 6717 67181) ACPI CA Core Subsystem: 6719 6720Fixed a compatibility issue with the recently released I/O port 6721protection 6722mechanism. For windows compatibility, 1) On a port protection violation, 6723simply ignore the request and do not return an exception (allow the 6724control 6725method to continue execution.) 2) If only part of the request overlaps a 6726protected port, read/write the individual ports that are not protected. 6727Linux 6728BZ 13036. Lin Ming 6729 6730Enhanced the execution of the ASL/AML BreakPoint operator so that it 6731actually 6732breaks into the AML debugger if the debugger is present. This matches the 6733ACPI-defined behavior. 6734 6735Fixed several possible warnings related to the use of the configurable 6736ACPI_THREAD_ID. This type can now be configured as either an integer or a 6737pointer with no warnings. Also fixes several warnings in printf-like 6738statements for the 64-bit build when the type is configured as a pointer. 6739ACPICA BZ 766, 767. 6740 6741Fixed a number of possible warnings when compiling with gcc 4+ (depending 6742on 6743warning options.) Examples include printf formats, aliasing, unused 6744globals, 6745missing prototypes, missing switch default statements, use of non-ANSI 6746library functions, use of non-ANSI constructs. See generate/unix/Makefile 6747for 6748a list of warning options used with gcc 3 and 4. ACPICA BZ 735. 6749 6750Example Code and Data Size: These are the sizes for the OS-independent 6751acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6752debug version of the code includes the debug output trace mechanism and 6753has a 6754much larger code and data size. 6755 6756 Previous Release: 6757 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 6758 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 6759 Current Release: 6760 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 6761 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 6762 67632) iASL Compiler/Disassembler and Tools: 6764 6765iASL: Fixed a generation warning from Bison 2.3 and fixed several 6766warnings 6767on 6768the 64-bit build. 6769 6770iASL: Fixed a problem where the Unix/Linux versions of the compiler could 6771not 6772correctly digest Windows/DOS formatted files (with CR/LF). 6773 6774iASL: Added a new option for "quiet mode" (-va) that produces only the 6775compilation summary, not individual errors and warnings. Useful for large 6776batch compilations. 6777 6778AcpiExec: Implemented a new option (-z) to enable a forced 6779semaphore/mutex 6780timeout that can be used to detect hang conditions during execution of 6781AML 6782code (includes both internal semaphores and AML-defined mutexes and 6783events.) 6784 6785Added new makefiles for the generation of acpica in a generic unix-like 6786environment. These makefiles are intended to generate the acpica tools 6787and 6788utilities from the original acpica git source tree structure. 6789 6790Test Suites: Updated and cleaned up the documentation files. Updated the 6791copyrights to 2009, affecting all source files. Use the new version of 6792iASL 6793with quiet mode. Increased the number of available semaphores in the 6794Windows 6795OSL, allowing the aslts to execute fully on Windows. For the Unix OSL, 6796added 6797an alternate implementation of the semaphore timeout to allow aslts to 6798execute fully on Cygwin. 6799 6800---------------------------------------- 680120 March 2009. Summary of changes for version 20090320: 6802 68031) ACPI CA Core Subsystem: 6804 6805Fixed a possible race condition between AcpiWalkNamespace and dynamic 6806table 6807unloads. Added a reader/writer locking mechanism to allow multiple 6808concurrent 6809namespace walks (readers), but block a dynamic table unload until it can 6810gain 6811exclusive write access to the namespace. This fixes a problem where a 6812table 6813unload could (possibly catastrophically) delete the portion of the 6814namespace 6815that is currently being examined by a walk. Adds a new file, utlock.c, 6816that 6817implements the reader/writer lock mechanism. ACPICA BZ 749. 6818 6819Fixed a regression introduced in version 20090220 where a change to the 6820FADT 6821handling could cause the ACPICA subsystem to access non-existent I/O 6822ports. 6823 6824Modified the handling of FADT register and table (FACS/DSDT) addresses. 6825The 6826FADT can contain both 32-bit and 64-bit versions of these addresses. 6827Previously, the 64-bit versions were favored, meaning that if both 32 and 682864 6829versions were valid, but not equal, the 64-bit version was used. This was 6830found to cause some machines to fail. Now, in this case, the 32-bit 6831version 6832is used instead. This now matches the Windows behavior. 6833 6834Implemented a new mechanism to protect certain I/O ports. Provides 6835Microsoft 6836compatibility and protects the standard PC I/O ports from access via AML 6837code. Adds a new file, hwvalid.c 6838 6839Fixed a possible extraneous warning message from the FADT support. The 6840message warns of a 32/64 length mismatch between the legacy and GAS 6841definitions for a register. 6842 6843Removed the obsolete AcpiOsValidateAddress OSL interface. This interface 6844is 6845made obsolete by the port protection mechanism above. It was previously 6846used 6847to validate the entire address range of an operation region, which could 6848be 6849incorrect if the range included illegal ports, but fields within the 6850operation region did not actually access those ports. Validation is now 6851performed on a per-field basis instead of the entire region. 6852 6853Modified the handling of the PM1 Status Register ignored bit (bit 11.) 6854Ignored bits must be "preserved" according to the ACPI spec. Usually, 6855this 6856means a read/modify/write when writing to the register. However, for 6857status 6858registers, writing a one means clear the event. Writing a zero means 6859preserve 6860the event (do not clear.) This behavior is clarified in the ACPI 4.0 6861spec, 6862and the ACPICA code now simply always writes a zero to the ignored bit. 6863 6864Modified the handling of ignored bits for the PM1 A/B Control Registers. 6865As 6866per the ACPI specification, for the control registers, preserve 6867(read/modify/write) all bits that are defined as either reserved or 6868ignored. 6869 6870Updated the handling of write-only bits in the PM1 A/B Control Registers. 6871When reading the register, zero the write-only bits as per the ACPI spec. 6872ACPICA BZ 443. Lin Ming. 6873 6874Removed "Linux" from the list of supported _OSI strings. Linux no longer 6875wants to reply true to this request. The Windows strings are the only 6876paths 6877through the AML that are tested and known to work properly. 6878 6879 Previous Release: 6880 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 6881 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 6882 Current Release: 6883 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 6884 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 6885 68862) iASL Compiler/Disassembler and Tools: 6887 6888Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c 6889and 6890aetables.c 6891 6892---------------------------------------- 689320 February 2009. Summary of changes for version 20090220: 6894 68951) ACPI CA Core Subsystem: 6896 6897Optimized the ACPI register locking. Removed locking for reads from the 6898ACPI 6899bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock 6900is 6901not required when reading the single-bit registers. The 6902AcpiGetRegisterUnlocked function is no longer needed and has been 6903removed. 6904This will improve performance for reads on these registers. ACPICA BZ 6905760. 6906 6907Fixed the parameter validation for AcpiRead/Write. Now return 6908AE_BAD_PARAMETER if the input register pointer is null, and 6909AE_BAD_ADDRESS 6910if 6911the register has an address of zero. Previously, these cases simply 6912returned 6913AE_OK. For optional registers such as PM1B status/enable/control, the 6914caller 6915should check for a valid register address before calling. ACPICA BZ 748. 6916 6917Renamed the external ACPI bit register access functions. Renamed 6918AcpiGetRegister and AcpiSetRegister to clarify the purpose of these 6919functions. The new names are AcpiReadBitRegister and 6920AcpiWriteBitRegister. 6921Also, restructured the code for these functions by simplifying the code 6922path 6923and condensing duplicate code to reduce code size. 6924 6925Added new functions to transparently handle the possibly split PM1 A/B 6926registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two 6927functions 6928now handle the split registers for PM1 Status, Enable, and Control. 6929ACPICA 6930BZ 6931746. 6932 6933Added a function to handle the PM1 control registers, 6934AcpiHwWritePm1Control. 6935This function writes both of the PM1 control registers (A/B). These 6936registers 6937are different than the PM1 A/B status and enable registers in that 6938different 6939values can be written to the A/B registers. Most notably, the SLP_TYP 6940bits 6941can be different, as per the values returned from the _Sx predefined 6942methods. 6943 6944Removed an extra register write within AcpiHwClearAcpiStatus. This 6945function 6946was writing an optional PM1B status register twice. The existing call to 6947the 6948low-level AcpiHwRegisterWrite automatically handles a possibly split PM1 6949A/B 6950register. ACPICA BZ 751. 6951 6952Split out the PM1 Status registers from the FADT. Added new globals for 6953these 6954registers (A/B), similar to the way the PM1 Enable registers are handled. 6955Instead of overloading the FADT Event Register blocks. This makes the 6956code 6957clearer and less prone to error. 6958 6959Fixed the warning message for when the platform contains too many ACPI 6960tables 6961for the default size of the global root table data structure. The 6962calculation 6963for the truncation value was incorrect. 6964 6965Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this 6966obsolete macro, since it is now a simple reference to ->common.type. 6967There 6968were about 150 invocations of the macro across 41 files. ACPICA BZ 755. 6969 6970Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as 6971TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to 6972simply SLEEP_TYPE. ACPICA BZ 754. 6973 6974Conditionally compile the AcpiSetFirmwareWakingVector64 function. This 6975function is only needed on 64-bit host operating systems and is thus not 6976included for 32-bit hosts. 6977 6978Debug output: print the input and result for invocations of the _OSI 6979reserved 6980control method via the ACPI_LV_INFO debug level. Also, reduced some of 6981the 6982verbosity of this debug level. Len Brown. 6983 6984Example Code and Data Size: These are the sizes for the OS-independent 6985acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6986debug version of the code includes the debug output trace mechanism and 6987has a 6988much larger code and data size. 6989 6990 Previous Release: 6991 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 6992 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 6993 Current Release: 6994 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 6995 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 6996 69972) iASL Compiler/Disassembler and Tools: 6998 6999Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the 7000various legal performance profiles. 7001 7002---------------------------------------- 700323 January 2009. Summary of changes for version 20090123: 7004 70051) ACPI CA Core Subsystem: 7006 7007Added the 2009 copyright to all module headers and signons. This affects 7008virtually every file in the ACPICA core subsystem, the iASL compiler, and 7009the tools/utilities. 7010 7011Implemented a change to allow the host to override any ACPI table, 7012including 7013dynamically loaded tables. Previously, only the DSDT could be replaced by 7014the 7015host. With this change, the AcpiOsTableOverride interface is called for 7016each 7017table found in the RSDT/XSDT during ACPICA initialization, and also 7018whenever 7019a table is dynamically loaded via the AML Load operator. 7020 7021Updated FADT flag definitions, especially the Boot Architecture flags. 7022 7023Debugger: For the Find command, automatically pad the input ACPI name 7024with 7025underscores if the name is shorter than 4 characters. This enables a 7026match 7027with the actual namespace entry which is itself padded with underscores. 7028 7029Example Code and Data Size: These are the sizes for the OS-independent 7030acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7031debug version of the code includes the debug output trace mechanism and 7032has a 7033much larger code and data size. 7034 7035 Previous Release: 7036 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 7037 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 7038 Current Release: 7039 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 7040 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 7041 70422) iASL Compiler/Disassembler and Tools: 7043 7044Fix build error under Bison-2.4. 7045 7046Dissasembler: Enhanced FADT support. Added decoding of the Boot 7047Architecture 7048flags. Now decode all flags, regardless of the FADT version. Flag output 7049includes the FADT version which first defined each flag. 7050 7051The iASL -g option now dumps the RSDT to a file (in addition to the FADT 7052and 7053DSDT). Windows only. 7054 7055---------------------------------------- 705604 December 2008. Summary of changes for version 20081204: 7057 70581) ACPI CA Core Subsystem: 7059 7060The ACPICA Programmer Reference has been completely updated and revamped 7061for 7062this release. This includes updates to the external interfaces, OSL 7063interfaces, the overview sections, and the debugger reference. 7064 7065Several new ACPICA interfaces have been implemented and documented in the 7066programmer reference: 7067AcpiReset - Writes the reset value to the FADT-defined reset register. 7068AcpiDisableAllGpes - Disable all available GPEs. 7069AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs. 7070AcpiGetGpeDevice - Get the GPE block device associated with a GPE. 7071AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs. 7072AcpiRead - Low-level read ACPI register (was HwLowLevelRead.) 7073AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.) 7074 7075Most of the public ACPI hardware-related interfaces have been moved to a 7076new 7077file, components/hardware/hwxface.c 7078 7079Enhanced the FADT parsing and low-level ACPI register access: The ACPI 7080register lengths within the FADT are now used, and the low level ACPI 7081register access no longer hardcodes the ACPI register lengths. Given that 7082there may be some risk in actually trusting the FADT register lengths, a 7083run- 7084time option was added to fall back to the default hardcoded lengths if 7085the 7086FADT proves to contain incorrect values - UseDefaultRegisterWidths. This 7087option is set to true for now, and a warning is issued if a suspicious 7088FADT 7089register length is overridden with the default value. 7090 7091Fixed a reference count issue in NsRepairObject. This problem was 7092introduced 7093in version 20081031 as part of a fix to repair Buffer objects within 7094Packages. Lin Ming. 7095 7096Added semaphore support to the Linux/Unix application OS-services layer 7097(OSL). ACPICA BZ 448. Lin Ming. 7098 7099Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes 7100will 7101be implemented in the OSL, or will binary semaphores be used instead. 7102 7103Example Code and Data Size: These are the sizes for the OS-independent 7104acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7105debug version of the code includes the debug output trace mechanism and 7106has a 7107much larger code and data size. 7108 7109 Previous Release: 7110 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 7111 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 7112 Current Release: 7113 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 7114 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 7115 71162) iASL Compiler/Disassembler and Tools: 7117 7118iASL: Completed the '-e' option to include additional ACPI tables in 7119order 7120to 7121aid with disassembly and External statement generation. ACPICA BZ 742. 7122Lin 7123Ming. 7124 7125iASL: Removed the "named object in while loop" error. The compiler cannot 7126determine how many times a loop will execute. ACPICA BZ 730. 7127 7128Disassembler: Implemented support for FADT revision 2 (MS extension). 7129ACPICA 7130BZ 743. 7131 7132Disassembler: Updates for several ACPI data tables (HEST, EINJ, and 7133MCFG). 7134 7135---------------------------------------- 713631 October 2008. Summary of changes for version 20081031: 7137 71381) ACPI CA Core Subsystem: 7139 7140Restructured the ACPICA header files into public/private. acpi.h now 7141includes 7142only the "public" acpica headers. All other acpica headers are "private" 7143and 7144should not be included by acpica users. One new file, accommon.h is used 7145to 7146include the commonly used private headers for acpica code generation. 7147Future 7148plans include moving all private headers to a new subdirectory. 7149 7150Implemented an automatic Buffer->String return value conversion for 7151predefined ACPI methods. For these methods (such as _BIF), added 7152automatic 7153conversion for return objects that are required to be a String, but a 7154Buffer 7155was found instead. This can happen when reading string battery data from 7156an 7157operation region, because it used to be difficult to convert the data 7158from 7159buffer to string from within the ASL. Ensures that the host OS is 7160provided 7161with a valid null-terminated string. Linux BZ 11822. 7162 7163Updated the FACS waking vector interfaces. Split 7164AcpiSetFirmwareWakingVector 7165into two: one for the 32-bit vector, another for the 64-bit vector. This 7166is 7167required because the host OS must setup the wake much differently for 7168each 7169vector (real vs. protected mode, etc.) and the interface itself should 7170not 7171be 7172deciding which vector to use. Also, eliminated the 7173GetFirmwareWakingVector 7174interface, as it served no purpose (only the firmware reads the vector, 7175OS 7176only writes the vector.) ACPICA BZ 731. 7177 7178Implemented a mechanism to escape infinite AML While() loops. Added a 7179loop 7180counter to force exit from AML While loops if the count becomes too 7181large. 7182This can occur in poorly written AML when the hardware does not respond 7183within a while loop and the loop does not implement a timeout. The 7184maximum 7185loop count is configurable. A new exception code is returned when a loop 7186is 7187broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore. 7188 7189Optimized the execution of AML While loops. Previously, a control state 7190object was allocated and freed for each execution of the loop. The 7191optimization is to simply reuse the control state for each iteration. 7192This 7193speeds up the raw loop execution time by about 5%. 7194 7195Enhanced the implicit return mechanism. For Windows compatibility, return 7196an 7197implicit integer of value zero for methods that contain no executable 7198code. 7199Such methods are seen in the field as stubs (presumably), and can cause 7200drivers to fail if they expect a return value. Lin Ming. 7201 7202Allow multiple backslashes as root prefixes in namepaths. In a fully 7203qualified namepath, allow multiple backslash prefixes. This can happen 7204(and 7205is seen in the field) because of the use of a double-backslash in strings 7206(since backslash is the escape character) causing confusion. ACPICA BZ 7207739 7208Lin Ming. 7209 7210Emit a warning if two different FACS or DSDT tables are discovered in the 7211FADT. Checks if there are two valid but different addresses for the FACS 7212and 7213DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.) 7214 7215Consolidated the method argument count validation code. Merged the code 7216that 7217validates control method argument counts into the predefined validation 7218module. Eliminates possible multiple warnings for incorrect argument 7219counts. 7220 7221Implemented ACPICA example code. Includes code for ACPICA initialization, 7222handler installation, and calling a control method. Available at 7223source/tools/examples. 7224 7225Added a global pointer for FACS table to simplify internal FACS access. 7226Use 7227the global pointer instead of using AcpiGetTableByIndex for each FACS 7228access. 7229This simplifies the code for the Global Lock and the Firmware Waking 7230Vector(s). 7231 7232Example Code and Data Size: These are the sizes for the OS-independent 7233acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7234debug version of the code includes the debug output trace mechanism and 7235has a 7236much larger code and data size. 7237 7238 Previous Release: 7239 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 7240 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 7241 Current Release: 7242 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 7243 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 7244 72452) iASL Compiler/Disassembler and Tools: 7246 7247iASL: Improved disassembly of external method calls. Added the -e option 7248to 7249allow the inclusion of additional ACPI tables to help with the 7250disassembly 7251of 7252method invocations and the generation of external declarations during the 7253disassembly. Certain external method invocations cannot be disassembled 7254properly without the actual declaration of the method. Use the -e option 7255to 7256include the table where the external method(s) are actually declared. 7257Most 7258useful for disassembling SSDTs that make method calls back to the master 7259DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl 7260-d 7261-e dsdt.aml ssdt1.aml 7262 7263iASL: Fix to allow references to aliases within ASL namepaths. Fixes a 7264problem where the use of an alias within a namepath would result in a not 7265found error or cause the compiler to fault. Also now allows forward 7266references from the Alias operator itself. ACPICA BZ 738. 7267 7268---------------------------------------- 726926 September 2008. Summary of changes for version 20080926: 7270 72711) ACPI CA Core Subsystem: 7272 7273Designed and implemented a mechanism to validate predefined ACPI methods 7274and 7275objects. This code validates the predefined ACPI objects (objects whose 7276names 7277start with underscore) that appear in the namespace, at the time they are 7278evaluated. The argument count and the type of the returned object are 7279validated against the ACPI specification. The purpose of this validation 7280is 7281to detect problems with the BIOS-implemented predefined ACPI objects 7282before 7283the results are returned to the ACPI-related drivers. Future enhancements 7284may 7285include actual repair of incorrect return objects where possible. Two new 7286files are nspredef.c and acpredef.h. 7287 7288Fixed a fault in the AML parser if a memory allocation fails during the 7289Op 7290completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492. 7291 7292Fixed an issue with implicit return compatibility. This change improves 7293the 7294implicit return mechanism to be more compatible with the MS interpreter. 7295Lin 7296Ming, ACPICA BZ 349. 7297 7298Implemented support for zero-length buffer-to-string conversions. Allow 7299zero 7300length strings during interpreter buffer-to-string conversions. For 7301example, 7302during the ToDecimalString and ToHexString operators, as well as implicit 7303conversions. Fiodor Suietov, ACPICA BZ 585. 7304 7305Fixed two possible memory leaks in the error exit paths of 7306AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions 7307are 7308similar in that they use a stack of state objects in order to eliminate 7309recursion. The stack must be fully unwound and deallocated if an error 7310occurs. Lin Ming. ACPICA BZ 383. 7311 7312Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the 7313global 7314ACPI register table. This bit does not exist and is unused. Lin Ming, Bob 7315Moore ACPICA BZ 442. 7316 7317Removed the obsolete version number in module headers. Removed the 7318"$Revision" number that appeared in each module header. This version 7319number 7320was useful under SourceSafe and CVS, but has no meaning under git. It is 7321not 7322only incorrect, it could also be misleading. 7323 7324Example Code and Data Size: These are the sizes for the OS-independent 7325acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7326debug version of the code includes the debug output trace mechanism and 7327has a 7328much larger code and data size. 7329 7330 Previous Release: 7331 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 7332 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 7333 Current Release: 7334 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 7335 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 7336 7337---------------------------------------- 733829 August 2008. Summary of changes for version 20080829: 7339 73401) ACPI CA Core Subsystem: 7341 7342Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type 7343Reference. Changes include the elimination of cheating on the Object 7344field 7345for the DdbHandle subtype, addition of a reference class field to 7346differentiate the various reference types (instead of an AML opcode), and 7347the 7348cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723 7349 7350Reduce an error to a warning for an incorrect method argument count. 7351Previously aborted with an error if too few arguments were passed to a 7352control method via the external ACPICA interface. Now issue a warning 7353instead 7354and continue. Handles the case where the method inadvertently declares 7355too 7356many arguments, but does not actually use the extra ones. Applies mainly 7357to 7358the predefined methods. Lin Ming. Linux BZ 11032. 7359 7360Disallow the evaluation of named object types with no intrinsic value. 7361Return 7362AE_TYPE for objects that have no value and therefore evaluation is 7363undefined: 7364Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation 7365of 7366these types were allowed, but an exception would be generated at some 7367point 7368during the evaluation. Now, the error is generated up front. 7369 7370Fixed a possible memory leak in the AcpiNsGetExternalPathname function 7371(nsnames.c). Fixes a leak in the error exit path. 7372 7373Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These 7374debug 7375levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and 7376ACPI_EXCEPTION 7377interfaces. Also added ACPI_DB_EVENTS to correspond with the existing 7378ACPI_LV_EVENTS. 7379 7380Removed obsolete and/or unused exception codes from the acexcep.h header. 7381There is the possibility that certain device drivers may be affected if 7382they 7383use any of these exceptions. 7384 7385The ACPICA documentation has been added to the public git source tree, 7386under 7387acpica/documents. Included are the ACPICA programmer reference, the iASL 7388compiler reference, and the changes.txt release logfile. 7389 7390Example Code and Data Size: These are the sizes for the OS-independent 7391acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7392debug version of the code includes the debug output trace mechanism and 7393has a 7394much larger code and data size. 7395 7396 Previous Release: 7397 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 7398 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 7399 Current Release: 7400 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 7401 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 7402 74032) iASL Compiler/Disassembler and Tools: 7404 7405Allow multiple argument counts for the predefined _SCP method. ACPI 3.0 7406defines _SCP with 3 arguments. Previous versions defined it with only 1 7407argument. iASL now allows both definitions. 7408 7409iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for 7410zero- 7411length subtables when disassembling ACPI tables. Also fixed a couple of 7412errors where a full 16-bit table type field was not extracted from the 7413input 7414properly. 7415 7416acpisrc: Improve comment counting mechanism for generating source code 7417statistics. Count first and last lines of multi-line comments as 7418whitespace, 7419not comment lines. Handle Linux legal header in addition to standard 7420acpica 7421header. 7422 7423---------------------------------------- 7424 742529 July 2008. Summary of changes for version 20080729: 7426 74271) ACPI CA Core Subsystem: 7428 7429Fix a possible deadlock in the GPE dispatch. Remove call to 7430AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will 7431attempt 7432to acquire the GPE lock but can deadlock since the GPE lock is already 7433held 7434at dispatch time. This code was introduced in version 20060831 as a 7435response 7436to Linux BZ 6881 and has since been removed from Linux. 7437 7438Add a function to dereference returned reference objects. Examines the 7439return 7440object from a call to AcpiEvaluateObject. Any Index or RefOf references 7441are 7442automatically dereferenced in an attempt to return something useful 7443(these 7444reference types cannot be converted into an external ACPI_OBJECT.) 7445Provides 7446MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105 7447 7448x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new 7449subtables for the MADT and one new subtable for the SRAT. Includes 7450disassembler and AcpiSrc support. Data from the Intel 64 Architecture 7451x2APIC 7452Specification, June 2008. 7453 7454Additional error checking for pathname utilities. Add error check after 7455all 7456calls to AcpiNsGetPathnameLength. Add status return from 7457AcpiNsBuildExternalPath and check after all calls. Add parameter 7458validation 7459to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar. 7460 7461Return status from the global init function AcpiUtGlobalInitialize. This 7462is 7463used by both the kernel subsystem and the utilities such as iASL 7464compiler. 7465The function could possibly fail when the caches are initialized. Yang 7466Yi. 7467 7468Add a function to decode reference object types to strings. Created for 7469improved error messages. 7470 7471Improve object conversion error messages. Better error messages during 7472object 7473conversion from internal to the external ACPI_OBJECT. Used for external 7474calls 7475to AcpiEvaluateObject. 7476 7477Example Code and Data Size: These are the sizes for the OS-independent 7478acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7479debug version of the code includes the debug output trace mechanism and 7480has a 7481much larger code and data size. 7482 7483 Previous Release: 7484 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 7485 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 7486 Current Release: 7487 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 7488 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 7489 74902) iASL Compiler/Disassembler and Tools: 7491 7492Debugger: fix a possible hang when evaluating non-methods. Fixes a 7493problem 7494introduced in version 20080701. If the object being evaluated (via 7495execute 7496command) is not a method, the debugger can hang while trying to obtain 7497non- 7498existent parameters. 7499 7500iASL: relax error for using reserved "_T_x" identifiers. These names can 7501appear in a disassembled ASL file if they were emitted by the original 7502compiler. Instead of issuing an error or warning and forcing the user to 7503manually change these names, issue a remark instead. 7504 7505iASL: error if named object created in while loop. Emit an error if any 7506named 7507object is created within a While loop. If allowed, this code will 7508generate 7509a 7510run-time error on the second iteration of the loop when an attempt is 7511made 7512to 7513create the same named object twice. ACPICA bugzilla 730. 7514 7515iASL: Support absolute pathnames for include files. Add support for 7516absolute 7517pathnames within the Include operator. previously, only relative 7518pathnames 7519were supported. 7520 7521iASL: Enforce minimum 1 interrupt in interrupt macro and Resource 7522Descriptor. 7523The ACPI spec requires one interrupt minimum. BZ 423 7524 7525iASL: Handle a missing ResourceSource arg, with a present SourceIndex. 7526Handles the case for the Interrupt Resource Descriptor where 7527the ResourceSource argument is omitted but ResourceSourceIndex 7528is present. Now leave room for the Index. BZ 426 7529 7530iASL: Prevent error message if CondRefOf target does not exist. Fixes 7531cases 7532where an error message is emitted if the target does not exist. BZ 516 7533 7534iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option 7535(get ACPI tables on Windows). This was apparently broken in version 753620070919. 7537 7538AcpiXtract: Handle EOF while extracting data. Correctly handle the case 7539where 7540the EOF happens immediately after the last table in the input file. Print 7541completion message. Previously, no message was displayed in this case. 7542 7543---------------------------------------- 754401 July 2008. Summary of changes for version 20080701: 7545 75460) Git source tree / acpica.org 7547 7548Fixed a problem where a git-clone from http would not transfer the entire 7549source tree. 7550 75511) ACPI CA Core Subsystem: 7552 7553Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one 7554enable bit. Now performs a read-change-write of the enable register 7555instead 7556of simply writing out the cached enable mask. This will prevent 7557inadvertent 7558enabling of GPEs if a rogue GPE is received during initialization (before 7559GPE 7560handlers are installed.) 7561 7562Implemented a copy for dynamically loaded tables. Previously, dynamically 7563loaded tables were simply mapped - but on some machines this memory is 7564corrupted after suspend. Now copy the table to a local buffer. For the 7565OpRegion case, added checksum verify. Use the table length from the table 7566header, not the region length. For the Buffer case, use the table length 7567also. Dennis Noordsij, Bob Moore. BZ 10734 7568 7569Fixed a problem where the same ACPI table could not be dynamically loaded 7570and 7571unloaded more than once. Without this change, a table cannot be loaded 7572again 7573once it has been loaded/unloaded one time. The current mechanism does not 7574unregister a table upon an unload. During a load, if the same table is 7575found, 7576this no longer returns an exception. BZ 722 7577 7578Fixed a problem where the wrong descriptor length was calculated for the 7579EndTag descriptor in 64-bit mode. The "minimal" descriptors such as 7580EndTag 7581are calculated as 12 bytes long, but the actual length in the internal 7582descriptor is 16 because of the round-up to 8 on the 64-bit build. 7583Reported 7584by Linn Crosetto. BZ 728 7585 7586Fixed a possible memory leak in the Unload operator. The DdbHandle 7587returned 7588by Load() did not have its reference count decremented during unload, 7589leading 7590to a memory leak. Lin Ming. BZ 727 7591 7592Fixed a possible memory leak when deleting thermal/processor objects. Any 7593associated notify handlers (and objects) were not being deleted. Fiodor 7594Suietov. BZ 506 7595 7596Fixed the ordering of the ASCII names in the global mutex table to match 7597the 7598actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug 7599only. 7600Vegard Nossum. BZ 726 7601 7602Enhanced the AcpiGetObjectInfo interface to return the number of required 7603arguments if the object is a control method. Added this call to the 7604debugger 7605so the proper number of default arguments are passed to a method. This 7606prevents a warning when executing methods from AcpiExec. 7607 7608Added a check for an invalid handle in AcpiGetObjectInfo. Return 7609AE_BAD_PARAMETER if input handle is invalid. BZ 474 7610 7611Fixed an extraneous warning from exconfig.c on the 64-bit build. 7612 7613Example Code and Data Size: These are the sizes for the OS-independent 7614acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7615debug version of the code includes the debug output trace mechanism and 7616has a 7617much larger code and data size. 7618 7619 Previous Release: 7620 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 7621 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 7622 Current Release: 7623 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 7624 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 7625 76262) iASL Compiler/Disassembler and Tools: 7627 7628iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both 7629resource descriptor names. 7630 7631iASL: Detect invalid ASCII characters in input (windows version). Removed 7632the 7633"-CF" flag from the flex compile, enables correct detection of non-ASCII 7634characters in the input. BZ 441 7635 7636iASL: Eliminate warning when result of LoadTable is not used. Eliminate 7637the 7638"result of operation not used" warning when the DDB handle returned from 7639LoadTable is not used. The warning is not needed. BZ 590 7640 7641AcpiExec: Add support for dynamic table load/unload. Now calls _CFG 7642method 7643to 7644pass address of table to the AML. Added option to disable OpRegion 7645simulation 7646to allow creation of an OpRegion with a real address that was passed to 7647_CFG. 7648All of this allows testing of the Load and Unload operators from 7649AcpiExec. 7650 7651Debugger: update tables command for unloaded tables. Handle unloaded 7652tables 7653and use the standard table header output routine. 7654 7655---------------------------------------- 765609 June 2008. Summary of changes for version 20080609: 7657 76581) ACPI CA Core Subsystem: 7659 7660Implemented a workaround for reversed _PRT entries. A significant number 7661of 7662BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This 7663change dynamically detects and repairs this problem. Provides 7664compatibility 7665with MS ACPI. BZ 6859 7666 7667Simplified the internal ACPI hardware interfaces to eliminate the locking 7668flag parameter from Register Read/Write. Added a new external interface, 7669AcpiGetRegisterUnlocked. 7670 7671Fixed a problem where the invocation of a GPE control method could hang. 7672This 7673was a regression introduced in 20080514. The new method argument count 7674validation mechanism can enter an infinite loop when a GPE method is 7675dispatched. Problem fixed by removing the obsolete code that passed GPE 7676block 7677information to the notify handler via the control method parameter 7678pointer. 7679 7680Fixed a problem where the _SST execution status was incorrectly returned 7681to 7682the caller of AcpiEnterSleepStatePrep. This was a regression introduced 7683in 768420080514. _SST is optional and a NOT_FOUND exception should never be 7685returned. BZ 716 7686 7687Fixed a problem where a deleted object could be accessed from within the 7688AML 7689parser. This was a regression introduced in version 20080123 as a fix for 7690the 7691Unload operator. Lin Ming. BZ 10669 7692 7693Cleaned up the debug operand dump mechanism. Eliminated unnecessary 7694operands 7695and eliminated the use of a negative index in a loop. Operands are now 7696displayed in the correct order, not backwards. This also fixes a 7697regression 7698introduced in 20080514 on 64-bit systems where the elimination of 7699ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ 7700715 7701 7702Fixed a possible memory leak in EvPciConfigRegionSetup where the error 7703exit 7704path did not delete a locally allocated structure. 7705 7706Updated definitions for the DMAR and SRAT tables to synchronize with the 7707current specifications. Includes disassembler support. 7708 7709Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect 7710loop termination value was used. Loop terminated on iteration early, 7711missing 7712one mutex. Linn Crosetto 7713 7714Example Code and Data Size: These are the sizes for the OS-independent 7715acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7716debug version of the code includes the debug output trace mechanism and 7717has a 7718much larger code and data size. 7719 7720 Previous Release: 7721 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 7722 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 7723 Current Release: 7724 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 7725 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 7726 77272) iASL Compiler/Disassembler and Tools: 7728 7729Disassembler: Implemented support for EisaId() within _CID objects. Now 7730disassemble integer _CID objects back to EisaId invocations, including 7731multiple integers within _CID packages. Includes single-step support for 7732debugger also. 7733 7734Disassembler: Added support for DMAR and SRAT table definition changes. 7735 7736---------------------------------------- 773714 May 2008. Summary of changes for version 20080514: 7738 77391) ACPI CA Core Subsystem: 7740 7741Fixed a problem where GPEs were enabled too early during the ACPICA 7742initialization. This could lead to "handler not installed" errors on some 7743machines. Moved GPE enable until after _REG/_STA/_INI methods are run. 7744This 7745ensures that all operation regions and devices throughout the namespace 7746have 7747been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916. 7748 7749Implemented a change to the enter sleep code. Moved execution of the _GTS 7750method to just before setting sleep enable bit. The execution was moved 7751from 7752AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed 7753immediately before the SLP_EN bit is set, as per the ACPI specification. 7754Luming Yu, BZ 1653. 7755 7756Implemented a fix to disable unknown GPEs (2nd version). Now always 7757disable 7758the GPE, even if ACPICA thinks that that it is already disabled. It is 7759possible that the AML or some other code has enabled the GPE unbeknownst 7760to 7761the ACPICA code. 7762 7763Fixed a problem with the Field operator where zero-length fields would 7764return 7765an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length 7766ASL 7767field declarations in Field(), BankField(), and IndexField(). BZ 10606. 7768 7769Implemented a fix for the Load operator, now load the table at the 7770namespace 7771root. This reverts a change introduced in version 20071019. The table is 7772now 7773loaded at the namespace root even though this goes against the ACPI 7774specification. This provides compatibility with other ACPI 7775implementations. 7776The ACPI specification will be updated to reflect this in ACPI 4.0. Lin 7777Ming. 7778 7779Fixed a problem where ACPICA would not Load() tables with unusual 7780signatures. 7781Now ignore ACPI table signature for Load() operator. Only "SSDT" is 7782acceptable to the ACPI spec, but tables are seen with OEMx and null sigs. 7783Therefore, signature validation is worthless. Apparently MS ACPI accepts 7784such 7785signatures, ACPICA must be compatible. BZ 10454. 7786 7787Fixed a possible negative array index in AcpiUtValidateException. Added 7788NULL 7789fields to the exception string arrays to eliminate a -1 subtraction on 7790the 7791SubStatus field. 7792 7793Updated the debug tracking macros to reduce overall code and data size. 7794Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings 7795instead of pointers to static strings. Jan Beulich and Bob Moore. 7796 7797Implemented argument count checking in control method invocation via 7798AcpiEvaluateObject. Now emit an error if too few arguments, warning if 7799too 7800many. This applies only to extern programmatic control method execution, 7801not 7802method-to-method calls within the AML. Lin Ming. 7803 7804Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is 7805no 7806longer needed, especially with the removal of 16-bit support. It was 7807replaced 7808mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64 7809bit 7810on 781132/64-bit platforms is required. 7812 7813Added the C const qualifier for appropriate string constants -- mostly 7814MODULE_NAME and printf format strings. Jan Beulich. 7815 7816Example Code and Data Size: These are the sizes for the OS-independent 7817acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7818debug version of the code includes the debug output trace mechanism and 7819has a 7820much larger code and data size. 7821 7822 Previous Release: 7823 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 7824 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 7825 Current Release: 7826 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 7827 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 7828 78292) iASL Compiler/Disassembler and Tools: 7830 7831Implemented ACPI table revision ID validation in the disassembler. Zero 7832is 7833always invalid. For DSDTs, the ID controls the interpreter integer width. 78341 7835means 32-bit and this is unusual. 2 or greater is 64-bit. 7836 7837---------------------------------------- 783821 March 2008. Summary of changes for version 20080321: 7839 78401) ACPI CA Core Subsystem: 7841 7842Implemented an additional change to the GPE support in order to suppress 7843spurious or stray GPEs. The AcpiEvDisableGpe function will now 7844permanently 7845disable incoming GPEs that are neither enabled nor disabled -- meaning 7846that 7847the GPE is unknown to the system. This should prevent future interrupt 7848floods 7849from that GPE. BZ 6217 (Zhang Rui) 7850 7851Fixed a problem where NULL package elements were not returned to the 7852AcpiEvaluateObject interface correctly. The element was simply ignored 7853instead of returning a NULL ACPI_OBJECT package element, potentially 7854causing 7855a buffer overflow and/or confusing the caller who expected a fixed number 7856of 7857elements. BZ 10132 (Lin Ming, Bob Moore) 7858 7859Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word, 7860Dword, 7861Qword), Field, BankField, and IndexField operators when invoked from 7862inside 7863an executing control method. In this case, these operators created 7864namespace 7865nodes that were incorrectly left marked as permanent nodes instead of 7866temporary nodes. This could cause a problem if there is race condition 7867between an exiting control method and a running namespace walk. (Reported 7868by 7869Linn Crosetto) 7870 7871Fixed a problem where the CreateField and CreateXXXField operators would 7872incorrectly allow duplicate names (the name of the field) with no 7873exception 7874generated. 7875 7876Implemented several changes for Notify handling. Added support for new 7877Notify 7878values (ACPI 2.0+) and improved the Notify debug output. Notify on 7879PowerResource objects is no longer allowed, as per the ACPI 7880specification. 7881(Bob Moore, Zhang Rui) 7882 7883All Reference Objects returned via the AcpiEvaluateObject interface are 7884now 7885marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved 7886for 7887NULL objects - either NULL package elements or unresolved named 7888references. 7889 7890Fixed a problem where an extraneous debug message was produced for 7891package 7892objects (when debugging enabled). The message "Package List length larger 7893than NumElements count" is now produced in the correct case, and is now 7894an 7895error message rather than a debug message. Added a debug message for the 7896opposite case, where NumElements is larger than the Package List (the 7897package 7898will be padded out with NULL elements as per the ACPI spec.) 7899 7900Implemented several improvements for the output of the ASL "Debug" object 7901to 7902clarify and keep all data for a given object on one output line. 7903 7904Fixed two size calculation issues with the variable-length Start 7905Dependent 7906resource descriptor. 7907 7908Example Code and Data Size: These are the sizes for the OS-independent 7909acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7910debug version of the code includes the debug output trace mechanism and 7911has 7912a much larger code and data size. 7913 7914 Previous Release: 7915 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 7916 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 7917 Current Release: 7918 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 7919 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 7920 79212) iASL Compiler/Disassembler and Tools: 7922 7923Fixed a problem with the use of the Switch operator where execution of 7924the 7925containing method by multiple concurrent threads could cause an 7926AE_ALREADY_EXISTS exception. This is caused by the fact that there is no 7927actual Switch opcode, it must be simulated with local named temporary 7928variables and if/else pairs. The solution chosen was to mark any method 7929that 7930uses Switch as Serialized, thus preventing multiple thread entries. BZ 7931469. 7932 7933---------------------------------------- 793413 February 2008. Summary of changes for version 20080213: 7935 79361) ACPI CA Core Subsystem: 7937 7938Implemented another MS compatibility design change for GPE/Notify 7939handling. 7940GPEs are now cleared/enabled asynchronously to allow all pending notifies 7941to 7942complete first. It is expected that the OSL will queue the enable request 7943behind all pending notify requests (may require changes to the local host 7944OSL 7945in AcpiOsExecute). Alexey Starikovskiy. 7946 7947Fixed a problem where buffer and package objects passed as arguments to a 7948control method via the external AcpiEvaluateObject interface could cause 7949an 7950AE_AML_INTERNAL exception depending on the order and type of operators 7951executed by the target control method. 7952 7953Fixed a problem where resource descriptor size optimization could cause a 7954problem when a _CRS resource template is passed to a _SRS method. The 7955_SRS 7956resource template must use the same descriptors (with the same size) as 7957returned from _CRS. This change affects the following resource 7958descriptors: 7959IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ 79609487) 7961 7962Fixed a problem where a CopyObject to RegionField, BankField, and 7963IndexField 7964objects did not perform an implicit conversion as it should. These types 7965must 7966retain their initial type permanently as per the ACPI specification. 7967However, 7968a CopyObject to all other object types should not perform an implicit 7969conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388 7970 7971Fixed a problem with the AcpiGetDevices interface where the mechanism to 7972match device CIDs did not examine the entire list of available CIDs, but 7973instead aborted on the first non-matching CID. Andrew Patterson. 7974 7975Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro 7976was 7977inadvertently changed to return a 16-bit value instead of a 32-bit value, 7978truncating the upper dword of a 64-bit value. This macro is only used to 7979display debug output, so no incorrect calculations were made. Also, 7980reimplemented the macro so that a 64-bit shift is not performed by 7981inefficient compilers. 7982 7983Added missing va_end statements that should correspond with each va_start 7984statement. 7985 7986Example Code and Data Size: These are the sizes for the OS-independent 7987acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7988debug version of the code includes the debug output trace mechanism and 7989has 7990a much larger code and data size. 7991 7992 Previous Release: 7993 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 7994 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 7995 Current Release: 7996 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 7997 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 7998 79992) iASL Compiler/Disassembler and Tools: 8000 8001Implemented full disassembler support for the following new ACPI tables: 8002BERT, EINJ, and ERST. Implemented partial disassembler support for the 8003complicated HEST table. These tables support the Windows Hardware Error 8004Architecture (WHEA). 8005 8006---------------------------------------- 800723 January 2008. Summary of changes for version 20080123: 8008 80091) ACPI CA Core Subsystem: 8010 8011Added the 2008 copyright to all module headers and signons. This affects 8012virtually every file in the ACPICA core subsystem, the iASL compiler, and 8013the tools/utilities. 8014 8015Fixed a problem with the SizeOf operator when used with Package and 8016Buffer 8017objects. These objects have deferred execution for some arguments, and 8018the 8019execution is now completed before the SizeOf is executed. This problem 8020caused 8021unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore) 8022BZ 80239558 8024 8025Implemented an enhancement to the interpreter "slack mode". In the 8026absence 8027of 8028an explicit return or an implicitly returned object from the last 8029executed 8030opcode, a control method will now implicitly return an integer of value 0 8031for 8032Microsoft compatibility. (Lin Ming) BZ 392 8033 8034Fixed a problem with the Load operator where an exception was not 8035returned 8036in 8037the case where the table is already loaded. (Lin Ming) BZ 463 8038 8039Implemented support for the use of DDBHandles as an Indexed Reference, as 8040per 8041the ACPI spec. (Lin Ming) BZ 486 8042 8043Implemented support for UserTerm (Method invocation) for the Unload 8044operator 8045as per the ACPI spec. (Lin Ming) BZ 580 8046 8047Fixed a problem with the LoadTable operator where the OemId and 8048OemTableId 8049input strings could cause unexpected failures if they were shorter than 8050the 8051maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576 8052 8053Implemented support for UserTerm (Method invocation) for the Unload 8054operator 8055as per the ACPI spec. (Lin Ming) BZ 580 8056 8057Implemented header file support for new ACPI tables - BERT, ERST, EINJ, 8058HEST, 8059IBFT, UEFI, WDAT. Disassembler support is forthcoming. 8060 8061Example Code and Data Size: These are the sizes for the OS-independent 8062acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8063debug version of the code includes the debug output trace mechanism and 8064has 8065a much larger code and data size. 8066 8067 Previous Release: 8068 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 8069 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 8070 Current Release: 8071 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 8072 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 8073 80742) iASL Compiler/Disassembler and Tools: 8075 8076Implemented support in the disassembler for checksum validation on 8077incoming 8078binary DSDTs and SSDTs. If incorrect, a message is displayed within the 8079table 8080header dump at the start of the disassembly. 8081 8082Implemented additional debugging information in the namespace listing 8083file 8084created during compilation. In addition to the namespace hierarchy, the 8085full 8086pathname to each namespace object is displayed. 8087 8088Fixed a problem with the disassembler where invalid ACPI tables could 8089cause 8090faults or infinite loops. 8091 8092Fixed an unexpected parse error when using the optional "parameter types" 8093list in a control method declaration. (Lin Ming) BZ 397 8094 8095Fixed a problem where two External declarations with the same name did 8096not 8097cause an error (Lin Ming) BZ 509 8098 8099Implemented support for full TermArgs (adding Argx, Localx and method 8100invocation) for the ParameterData parameter to the LoadTable operator. 8101(Lin 8102Ming) BZ 583,587 8103 8104---------------------------------------- 810519 December 2007. Summary of changes for version 20071219: 8106 81071) ACPI CA Core Subsystem: 8108 8109Implemented full support for deferred execution for the TermArg string 8110arguments for DataTableRegion. This enables forward references and full 8111operand resolution for the three string arguments. Similar to 8112OperationRegion 8113deferred argument execution.) Lin Ming. BZ 430 8114 8115Implemented full argument resolution support for the BankValue argument 8116to 8117BankField. Previously, only constants were supported, now any TermArg may 8118be 8119used. Lin Ming BZ 387, 393 8120 8121Fixed a problem with AcpiGetDevices where the search of a branch of the 8122device tree could be terminated prematurely. In accordance with the ACPI 8123specification, the search down the current branch is terminated if a 8124device 8125is both not present and not functional (instead of just not present.) 8126Yakui 8127Zhao. 8128 8129Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly 8130if 8131the underlying AML code changed the GPE enable registers. Now, any 8132unknown 8133incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately 8134disabled 8135instead of simply ignored. Rui Zhang. 8136 8137Fixed a problem with Index Fields where the Index register was 8138incorrectly 8139limited to a maximum of 32 bits. Now any size may be used. 8140 8141Fixed a couple memory leaks associated with "implicit return" objects 8142when 8143the AML Interpreter slack mode is enabled. Lin Ming BZ 349 8144 8145Example Code and Data Size: These are the sizes for the OS-independent 8146acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8147debug version of the code includes the debug output trace mechanism and 8148has 8149a much larger code and data size. 8150 8151 Previous Release: 8152 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 8153 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 8154 Current Release: 8155 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 8156 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 8157 8158---------------------------------------- 815914 November 2007. Summary of changes for version 20071114: 8160 81611) ACPI CA Core Subsystem: 8162 8163Implemented event counters for each of the Fixed Events, the ACPI SCI 8164(interrupt) itself, and control methods executed. Named 8165AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively. 8166These 8167should be useful for debugging and statistics. 8168 8169Implemented a new external interface, AcpiGetStatistics, to retrieve the 8170contents of the various event counters. Returns the current values for 8171AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and 8172AcpiMethodCount. The interface can be expanded in the future if new 8173counters 8174are added. Device drivers should use this interface rather than access 8175the 8176counters directly. 8177 8178Fixed a problem with the FromBCD and ToBCD operators. With some 8179compilers, 8180the ShortDivide function worked incorrectly, causing problems with the 8181BCD 8182functions with large input values. A truncation from 64-bit to 32-bit 8183inadvertently occurred. Internal BZ 435. Lin Ming 8184 8185Fixed a problem with Index references passed as method arguments. 8186References 8187passed as arguments to control methods were dereferenced immediately 8188(before 8189control was passed to the called method). The references are now 8190correctly 8191passed directly to the called method. BZ 5389. Lin Ming 8192 8193Fixed a problem with CopyObject used in conjunction with the Index 8194operator. 8195The reference was incorrectly dereferenced before the copy. The reference 8196is 8197now correctly copied. BZ 5391. Lin Ming 8198 8199Fixed a problem with Control Method references within Package objects. 8200These 8201references are now correctly generated. This completes the package 8202construction overhaul that began in version 20071019. 8203 8204Example Code and Data Size: These are the sizes for the OS-independent 8205acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8206debug version of the code includes the debug output trace mechanism and 8207has 8208a much larger code and data size. 8209 8210 Previous Release: 8211 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 8212 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 8213 Current Release: 8214 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 8215 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 8216 8217 82182) iASL Compiler/Disassembler and Tools: 8219 8220The AcpiExec utility now installs handlers for all of the predefined 8221Operation Region types. New types supported are: PCI_Config, CMOS, and 8222PCIBARTarget. 8223 8224Fixed a problem with the 64-bit version of AcpiExec where the extended 8225(64- 8226bit) address fields for the DSDT and FACS within the FADT were not being 8227used, causing truncation of the upper 32-bits of these addresses. Lin 8228Ming 8229and Bob Moore 8230 8231---------------------------------------- 823219 October 2007. Summary of changes for version 20071019: 8233 82341) ACPI CA Core Subsystem: 8235 8236Fixed a problem with the Alias operator when the target of the alias is a 8237named ASL operator that opens a new scope -- Scope, Device, 8238PowerResource, 8239Processor, and ThermalZone. In these cases, any children of the original 8240operator could not be accessed via the alias, potentially causing 8241unexpected 8242AE_NOT_FOUND exceptions. (BZ 9067) 8243 8244Fixed a problem with the Package operator where all named references were 8245created as object references and left otherwise unresolved. According to 8246the 8247ACPI specification, a Package can only contain Data Objects or references 8248to 8249control methods. The implication is that named references to Data Objects 8250(Integer, Buffer, String, Package, BufferField, Field) should be resolved 8251immediately upon package creation. This is the approach taken with this 8252change. References to all other named objects (Methods, Devices, Scopes, 8253etc.) are all now properly created as reference objects. (BZ 5328) 8254 8255Reverted a change to Notify handling that was introduced in version 825620070508. This version changed the Notify handling from asynchronous to 8257fully synchronous (Device driver Notify handling with respect to the 8258Notify 8259ASL operator). It was found that this change caused more problems than it 8260solved and was removed by most users. 8261 8262Fixed a problem with the Increment and Decrement operators where the type 8263of 8264the target object could be unexpectedly and incorrectly changed. (BZ 353) 8265Lin Ming. 8266 8267Fixed a problem with the Load and LoadTable operators where the table 8268location within the namespace was ignored. Instead, the table was always 8269loaded into the root or current scope. Lin Ming. 8270 8271Fixed a problem with the Load operator when loading a table from a buffer 8272object. The input buffer was prematurely zeroed and/or deleted. (BZ 577) 8273 8274Fixed a problem with the Debug object where a store of a DdbHandle 8275reference 8276object to the Debug object could cause a fault. 8277 8278Added a table checksum verification for the Load operator, in the case 8279where 8280the load is from a buffer. (BZ 578). 8281 8282Implemented additional parameter validation for the LoadTable operator. 8283The 8284length of the input strings SignatureString, OemIdString, and OemTableId 8285are 8286now checked for maximum lengths. (BZ 582) Lin Ming. 8287 8288Example Code and Data Size: These are the sizes for the OS-independent 8289acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8290debug version of the code includes the debug output trace mechanism and 8291has 8292a much larger code and data size. 8293 8294 Previous Release: 8295 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 8296 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 8297 Current Release: 8298 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 8299 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 8300 8301 83022) iASL Compiler/Disassembler: 8303 8304Fixed a problem where if a single file was specified and the file did not 8305exist, no error message was emitted. (Introduced with wildcard support in 8306version 20070917.) 8307 8308---------------------------------------- 830919 September 2007. Summary of changes for version 20070919: 8310 83111) ACPI CA Core Subsystem: 8312 8313Designed and implemented new external interfaces to install and remove 8314handlers for ACPI table-related events. Current events that are defined 8315are 8316LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as 8317they are dynamically loaded and unloaded. See AcpiInstallTableHandler and 8318AcpiRemoveTableHandler. (Lin Ming and Bob Moore) 8319 8320Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag 8321(acpi_serialized option on Linux) could cause some systems to hang during 8322initialization. (Bob Moore) BZ 8171 8323 8324Fixed a problem where objects of certain types (Device, ThermalZone, 8325Processor, PowerResource) can be not found if they are declared and 8326referenced from within the same control method (Lin Ming) BZ 341 8327 8328Example Code and Data Size: These are the sizes for the OS-independent 8329acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8330debug version of the code includes the debug output trace mechanism and 8331has 8332a much larger code and data size. 8333 8334 Previous Release: 8335 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 8336 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 8337 Current Release: 8338 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 8339 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 8340 8341 83422) iASL Compiler/Disassembler: 8343 8344Implemented support to allow multiple files to be compiled/disassembled 8345in 8346a 8347single invocation. This includes command line wildcard support for both 8348the 8349Windows and Unix versions of the compiler. This feature simplifies the 8350disassembly and compilation of multiple ACPI tables in a single 8351directory. 8352 8353---------------------------------------- 835408 May 2007. Summary of changes for version 20070508: 8355 83561) ACPI CA Core Subsystem: 8357 8358Implemented a Microsoft compatibility design change for the handling of 8359the 8360Notify AML operator. Previously, notify handlers were dispatched and 8361executed completely asynchronously in a deferred thread. The new design 8362still executes the notify handlers in a different thread, but the 8363original 8364thread that executed the Notify() now waits at a synchronization point 8365for 8366the notify handler to complete. Some machines depend on a synchronous 8367Notify 8368operator in order to operate correctly. 8369 8370Implemented support to allow Package objects to be passed as method 8371arguments to the external AcpiEvaluateObject interface. Previously, this 8372would return the AE_NOT_IMPLEMENTED exception. This feature had not been 8373implemented since there were no reserved control methods that required it 8374until recently. 8375 8376Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs 8377that 8378contained invalid non-zero values in reserved fields could cause later 8379failures because these fields have meaning in later revisions of the 8380FADT. 8381For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The 8382fields 8383are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.) 8384 8385Fixed a problem where the Global Lock handle was not properly updated if 8386a 8387thread that acquired the Global Lock via executing AML code then 8388attempted 8389to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by 8390Joe 8391Liu. 8392 8393Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list 8394could be corrupted if the interrupt being removed was at the head of the 8395list. Reported by Linn Crosetto. 8396 8397Example Code and Data Size: These are the sizes for the OS-independent 8398acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8399debug version of the code includes the debug output trace mechanism and 8400has 8401a much larger code and data size. 8402 8403 Previous Release: 8404 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 8405 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 8406 Current Release: 8407 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 8408 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 8409 8410---------------------------------------- 841120 March 2007. Summary of changes for version 20070320: 8412 84131) ACPI CA Core Subsystem: 8414 8415Implemented a change to the order of interpretation and evaluation of AML 8416operand objects within the AML interpreter. The interpreter now evaluates 8417operands in the order that they appear in the AML stream (and the 8418corresponding ASL code), instead of in the reverse order (after the 8419entire 8420operand list has been parsed). The previous behavior caused several 8421subtle 8422incompatibilities with the Microsoft AML interpreter as well as being 8423somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov. 8424 8425Implemented a change to the ACPI Global Lock support. All interfaces to 8426the 8427global lock now allow the same thread to acquire the lock multiple times. 8428This affects the AcpiAcquireGlobalLock external interface to the global 8429lock 8430as well as the internal use of the global lock to support AML fields -- a 8431control method that is holding the global lock can now simultaneously 8432access 8433AML fields that require global lock protection. Previously, in both 8434cases, 8435this would have resulted in an AE_ALREADY_ACQUIRED exception. The change 8436to 8437AcpiAcquireGlobalLock is of special interest to drivers for the Embedded 8438Controller. There is no change to the behavior of the AML Acquire 8439operator, 8440as this can already be used to acquire a mutex multiple times by the same 8441thread. BZ 8066. With assistance from Alexey Starikovskiy. 8442 8443Fixed a problem where invalid objects could be referenced in the AML 8444Interpreter after error conditions. During operand evaluation, ensure 8445that 8446the internal "Return Object" field is cleared on error and only valid 8447pointers are stored there. Caused occasional access to deleted objects 8448that 8449resulted in "large reference count" warning messages. Valery Podrezov. 8450 8451Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur 8452on 8453deeply nested control method invocations. BZ 7873, local BZ 487. Valery 8454Podrezov. 8455 8456Fixed an internal problem with the handling of result objects on the 8457interpreter result stack. BZ 7872. Valery Podrezov. 8458 8459Removed obsolete code that handled the case where AML_NAME_OP is the 8460target 8461of a reference (Reference.Opcode). This code was no longer necessary. BZ 84627874. Valery Podrezov. 8463 8464Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This 8465was 8466a 8467remnant from the previously discontinued 16-bit support. 8468 8469Example Code and Data Size: These are the sizes for the OS-independent 8470acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8471debug version of the code includes the debug output trace mechanism and 8472has 8473a much larger code and data size. 8474 8475 Previous Release: 8476 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 8477 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 8478 Current Release: 8479 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 8480 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 8481 8482---------------------------------------- 848326 January 2007. Summary of changes for version 20070126: 8484 84851) ACPI CA Core Subsystem: 8486 8487Added the 2007 copyright to all module headers and signons. This affects 8488virtually every file in the ACPICA core subsystem, the iASL compiler, and 8489the utilities. 8490 8491Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable 8492during a table load. A bad pointer was passed in the case where the DSDT 8493is 8494overridden, causing a fault in this case. 8495 8496Example Code and Data Size: These are the sizes for the OS-independent 8497acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8498debug version of the code includes the debug output trace mechanism and 8499has 8500a much larger code and data size. 8501 8502 Previous Release: 8503 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 8504 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 8505 Current Release: 8506 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 8507 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 8508 8509---------------------------------------- 851015 December 2006. Summary of changes for version 20061215: 8511 85121) ACPI CA Core Subsystem: 8513 8514Support for 16-bit ACPICA has been completely removed since it is no 8515longer 8516necessary and it clutters the code. All 16-bit macros, types, and 8517conditional compiles have been removed, cleaning up and simplifying the 8518code 8519across the entire subsystem. DOS support is no longer needed since the 8520bootable Linux firmware kit is now available. 8521 8522The handler for the Global Lock is now removed during AcpiTerminate to 8523enable a clean subsystem restart, via the implementation of the 8524AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz, 8525HP) 8526 8527Implemented enhancements to the multithreading support within the 8528debugger 8529to enable improved multithreading debugging and evaluation of the 8530subsystem. 8531(Valery Podrezov) 8532 8533Debugger: Enhanced the Statistics/Memory command to emit the total 8534(maximum) 8535memory used during the execution, as well as the maximum memory consumed 8536by 8537each of the various object types. (Valery Podrezov) 8538 8539Example Code and Data Size: These are the sizes for the OS-independent 8540acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8541debug version of the code includes the debug output trace mechanism and 8542has 8543a much larger code and data size. 8544 8545 Previous Release: 8546 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 8547 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 8548 Current Release: 8549 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 8550 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 8551 8552 85532) iASL Compiler/Disassembler and Tools: 8554 8555AcpiExec: Implemented a new option (-m) to display full memory use 8556statistics upon subsystem/program termination. (Valery Podrezov) 8557 8558---------------------------------------- 855909 November 2006. Summary of changes for version 20061109: 8560 85611) ACPI CA Core Subsystem: 8562 8563Optimized the Load ASL operator in the case where the source operand is 8564an 8565operation region. Simply map the operation region memory, instead of 8566performing a bytewise read. (Region must be of type SystemMemory, see 8567below.) 8568 8569Fixed the Load ASL operator for the case where the source operand is a 8570region field. A buffer object is also allowed as the source operand. BZ 8571480 8572 8573Fixed a problem where the Load ASL operator allowed the source operand to 8574be 8575an operation region of any type. It is now restricted to regions of type 8576SystemMemory, as per the ACPI specification. BZ 481 8577 8578Additional cleanup and optimizations for the new Table Manager code. 8579 8580AcpiEnable will now fail if all of the required ACPI tables are not 8581loaded 8582(FADT, FACS, DSDT). BZ 477 8583 8584Added #pragma pack(8/4) to acobject.h to ensure that the structures in 8585this 8586header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been 8587manually optimized to be aligned and will not work if it is byte-packed. 8588 8589Example Code and Data Size: These are the sizes for the OS-independent 8590acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8591debug version of the code includes the debug output trace mechanism and 8592has 8593a much larger code and data size. 8594 8595 Previous Release: 8596 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 8597 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 8598 Current Release: 8599 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 8600 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 8601 8602 86032) iASL Compiler/Disassembler and Tools: 8604 8605Fixed a problem where the presence of the _OSI predefined control method 8606within complex expressions could cause an internal compiler error. 8607 8608AcpiExec: Implemented full region support for multiple address spaces. 8609SpaceId is now part of the REGION object. BZ 429 8610 8611---------------------------------------- 861211 October 2006. Summary of changes for version 20061011: 8613 86141) ACPI CA Core Subsystem: 8615 8616Completed an AML interpreter performance enhancement for control method 8617execution. Previously a 2-pass parse/execution, control methods are now 8618completely parsed and executed in a single pass. This improves overall 8619interpreter performance by ~25%, reduces code size, and reduces CPU stack 8620use. (Valery Podrezov + interpreter changes in version 20051202 that 8621eliminated namespace loading during the pass one parse.) 8622 8623Implemented _CID support for PCI Root Bridge detection. If the _HID does 8624not 8625match the predefined PCI Root Bridge IDs, the _CID list (if present) is 8626now 8627obtained and also checked for an ID match. 8628 8629Implemented additional support for the PCI _ADR execution: upsearch until 8630a 8631device scope is found before executing _ADR. This allows PCI_Config 8632operation regions to be declared locally within control methods 8633underneath 8634PCI device objects. 8635 8636Fixed a problem with a possible race condition between threads executing 8637AcpiWalkNamespace and the AML interpreter. This condition was removed by 8638modifying AcpiWalkNamespace to (by default) ignore all temporary 8639namespace 8640entries created during any concurrent control method execution. An 8641additional namespace race condition is known to exist between 8642AcpiWalkNamespace and the Load/Unload ASL operators and is still under 8643investigation. 8644 8645Restructured the AML ParseLoop function, breaking it into several 8646subfunctions in order to reduce CPU stack use and improve 8647maintainability. 8648(Mikhail Kouzmich) 8649 8650AcpiGetHandle: Fix for parameter validation to detect invalid 8651combinations 8652of prefix handle and pathname. BZ 478 8653 8654Example Code and Data Size: These are the sizes for the OS-independent 8655acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8656debug version of the code includes the debug output trace mechanism and 8657has 8658a much larger code and data size. 8659 8660 Previous Release: 8661 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 8662 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 8663 Current Release: 8664 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 8665 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 8666 86672) iASL Compiler/Disassembler and Tools: 8668 8669Ported the -g option (get local ACPI tables) to the new ACPICA Table 8670Manager 8671to restore original behavior. 8672 8673---------------------------------------- 867427 September 2006. Summary of changes for version 20060927: 8675 86761) ACPI CA Core Subsystem: 8677 8678Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister. 8679These functions now use a spinlock for mutual exclusion and the interrupt 8680level indication flag is not needed. 8681 8682Fixed a problem with the Global Lock where the lock could appear to be 8683obtained before it is actually obtained. The global lock semaphore was 8684inadvertently created with one unit instead of zero units. (BZ 464) 8685Fiodor 8686Suietov. 8687 8688Fixed a possible memory leak and fault in AcpiExResolveObjectToValue 8689during 8690a read from a buffer or region field. (BZ 458) Fiodor Suietov. 8691 8692Example Code and Data Size: These are the sizes for the OS-independent 8693acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8694debug version of the code includes the debug output trace mechanism and 8695has 8696a much larger code and data size. 8697 8698 Previous Release: 8699 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 8700 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 8701 Current Release: 8702 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 8703 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 8704 8705 87062) iASL Compiler/Disassembler and Tools: 8707 8708Fixed a compilation problem with the pre-defined Resource Descriptor 8709field 8710names where an "object does not exist" error could be incorrectly 8711generated 8712if the parent ResourceTemplate pathname places the template within a 8713different namespace scope than the current scope. (BZ 7212) 8714 8715Fixed a problem where the compiler could hang after syntax errors 8716detected 8717in an ElseIf construct. (BZ 453) 8718 8719Fixed a problem with the AmlFilename parameter to the DefinitionBlock() 8720operator. An incorrect output filename was produced when this parameter 8721was 8722a null string (""). Now, the original input filename is used as the AML 8723output filename, with an ".aml" extension. 8724 8725Implemented a generic batch command mode for the AcpiExec utility 8726(execute 8727any AML debugger command) (Valery Podrezov). 8728 8729---------------------------------------- 873012 September 2006. Summary of changes for version 20060912: 8731 87321) ACPI CA Core Subsystem: 8733 8734Enhanced the implementation of the "serialized mode" of the interpreter 8735(enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is 8736specified, instead of creating a serialization semaphore per control 8737method, 8738the interpreter lock is simply no longer released before a blocking 8739operation during control method execution. This effectively makes the AML 8740Interpreter single-threaded. The overhead of a semaphore per-method is 8741eliminated. 8742 8743Fixed a regression where an error was no longer emitted if a control 8744method 8745attempts to create 2 objects of the same name. This once again returns 8746AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism 8747that 8748will dynamically serialize the control method to possible prevent future 8749errors. (BZ 440) 8750 8751Integrated a fix for a problem with PCI Express HID detection in the PCI 8752Config Space setup procedure. (BZ 7145) 8753 8754Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the 8755AcpiHwInitialize function - the FADT registers are now validated when the 8756table is loaded. 8757 8758Added two new warnings during FADT verification - 1) if the FADT is 8759larger 8760than the largest known FADT version, and 2) if there is a mismatch 8761between 8762a 876332-bit block address and the 64-bit X counterpart (when both are non- 8764zero.) 8765 8766Example Code and Data Size: These are the sizes for the OS-independent 8767acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8768debug version of the code includes the debug output trace mechanism and 8769has 8770a much larger code and data size. 8771 8772 Previous Release: 8773 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 8774 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 8775 Current Release: 8776 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 8777 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 8778 8779 87802) iASL Compiler/Disassembler and Tools: 8781 8782Fixed a problem with the implementation of the Switch() operator where 8783the 8784temporary variable was declared too close to the actual Switch, instead 8785of 8786at method level. This could cause a problem if the Switch() operator is 8787within a while loop, causing an error on the second iteration. (BZ 460) 8788 8789Disassembler - fix for error emitted for unknown type for target of scope 8790operator. Now, ignore it and continue. 8791 8792Disassembly of an FADT now verifies the input FADT and reports any errors 8793found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs. 8794 8795Disassembly of raw data buffers with byte initialization data now 8796prefixes 8797each output line with the current buffer offset. 8798 8799Disassembly of ASF! table now includes all variable-length data fields at 8800the end of some of the subtables. 8801 8802The disassembler now emits a comment if a buffer appears to be a 8803ResourceTemplate, but cannot be disassembled as such because the EndTag 8804does 8805not appear at the very end of the buffer. 8806 8807AcpiExec - Added the "-t" command line option to enable the serialized 8808mode 8809of the AML interpreter. 8810 8811---------------------------------------- 881231 August 2006. Summary of changes for version 20060831: 8813 88141) ACPI CA Core Subsystem: 8815 8816Miscellaneous fixes for the Table Manager: 8817- Correctly initialize internal common FADT for all 64-bit "X" fields 8818- Fixed a couple table mapping issues during table load 8819- Fixed a couple alignment issues for IA64 8820- Initialize input array to zero in AcpiInitializeTables 8821- Additional parameter validation for AcpiGetTable, AcpiGetTableHeader, 8822AcpiGetTableByIndex 8823 8824Change for GPE support: when a "wake" GPE is received, all wake GPEs are 8825now 8826immediately disabled to prevent the waking GPE from firing again and to 8827prevent other wake GPEs from interrupting the wake process. 8828 8829Added the AcpiGpeCount global that tracks the number of processed GPEs, 8830to 8831be used for debugging systems with a large number of ACPI interrupts. 8832 8833Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in 8834both the ACPICA headers and the disassembler. 8835 8836Example Code and Data Size: These are the sizes for the OS-independent 8837acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8838debug version of the code includes the debug output trace mechanism and 8839has 8840a much larger code and data size. 8841 8842 Previous Release: 8843 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 8844 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 8845 Current Release: 8846 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 8847 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 8848 8849 88502) iASL Compiler/Disassembler and Tools: 8851 8852Disassembler support for the DMAR ACPI table. 8853 8854---------------------------------------- 885523 August 2006. Summary of changes for version 20060823: 8856 88571) ACPI CA Core Subsystem: 8858 8859The Table Manager component has been completely redesigned and 8860reimplemented. The new design is much simpler, and reduces the overall 8861code 8862and data size of the kernel-resident ACPICA by approximately 5%. Also, it 8863is 8864now possible to obtain the ACPI tables very early during kernel 8865initialization, even before dynamic memory management is initialized. 8866(Alexey Starikovskiy, Fiodor Suietov, Bob Moore) 8867 8868Obsolete ACPICA interfaces: 8869 8870- AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel 8871init 8872time). 8873- AcpiLoadTable: Not needed. 8874- AcpiUnloadTable: Not needed. 8875 8876New ACPICA interfaces: 8877 8878- AcpiInitializeTables: Must be called before the table manager can be 8879used. 8880- AcpiReallocateRootTable: Used to transfer the root table to dynamically 8881allocated memory after it becomes available. 8882- AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI 8883tables 8884in the RSDT/XSDT. 8885 8886Other ACPICA changes: 8887 8888- AcpiGetTableHeader returns the actual mapped table header, not a copy. 8889Use 8890AcpiOsUnmapMemory to free this mapping. 8891- AcpiGetTable returns the actual mapped table. The mapping is managed 8892internally and must not be deleted by the caller. Use of this interface 8893causes no additional dynamic memory allocation. 8894- AcpiFindRootPointer: Support for physical addressing has been 8895eliminated, 8896it appeared to be unused. 8897- The interface to AcpiOsMapMemory has changed to be consistent with the 8898other allocation interfaces. 8899- The interface to AcpiOsGetRootPointer has changed to eliminate 8900unnecessary 8901parameters. 8902- ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on 890364- 8904bit platforms. Was previously 64 bits on all platforms. 8905- The interface to the ACPI Global Lock acquire/release macros have 8906changed 8907slightly since ACPICA no longer keeps a local copy of the FACS with a 8908constructed pointer to the actual global lock. 8909 8910Porting to the new table manager: 8911 8912- AcpiInitializeTables: Must be called once, and can be called anytime 8913during the OS initialization process. It allows the host to specify an 8914area 8915of memory to be used to store the internal version of the RSDT/XSDT (root 8916table). This allows the host to access ACPI tables before memory 8917management 8918is initialized and running. 8919- AcpiReallocateRootTable: Can be called after memory management is 8920running 8921to copy the root table to a dynamically allocated array, freeing up the 8922scratch memory specified in the call to AcpiInitializeTables. 8923- AcpiSubsystemInitialize: This existing interface is independent of the 8924Table Manager, and does not have to be called before the Table Manager 8925can 8926be used, it only must be called before the rest of ACPICA can be used. 8927- ACPI Tables: Some changes have been made to the names and structure of 8928the 8929actbl.h and actbl1.h header files and may require changes to existing 8930code. 8931For example, bitfields have been completely removed because of their lack 8932of 8933portability across C compilers. 8934- Update interfaces to the Global Lock acquire/release macros if local 8935versions are used. (see acwin.h) 8936 8937Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c 8938 8939New files: tbfind.c 8940 8941Example Code and Data Size: These are the sizes for the OS-independent 8942acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8943debug version of the code includes the debug output trace mechanism and 8944has 8945a much larger code and data size. 8946 8947 Previous Release: 8948 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 8949 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 8950 Current Release: 8951 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 8952 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 8953 8954 89552) iASL Compiler/Disassembler and Tools: 8956 8957No changes for this release. 8958 8959---------------------------------------- 896021 July 2006. Summary of changes for version 20060721: 8961 89621) ACPI CA Core Subsystem: 8963 8964The full source code for the ASL test suite used to validate the iASL 8965compiler and the ACPICA core subsystem is being released with the ACPICA 8966source for the first time. The source is contained in a separate package 8967and 8968consists of over 1100 files that exercise all ASL/AML operators. The 8969package 8970should appear on the Intel/ACPI web site shortly. (Valery Podrezov, 8971Fiodor 8972Suietov) 8973 8974Completed a new design and implementation for support of the ACPI Global 8975Lock. On the OS side, the global lock is now treated as a standard AML 8976mutex. Previously, multiple OS threads could "acquire" the global lock 8977simultaneously. However, this could cause the BIOS to be starved out of 8978the 8979lock - especially in cases such as the Embedded Controller driver where 8980there is a tight coupling between the OS and the BIOS. 8981 8982Implemented an optimization for the ACPI Global Lock interrupt mechanism. 8983The Global Lock interrupt handler no longer queues the execution of a 8984separate thread to signal the global lock semaphore. Instead, the 8985semaphore 8986is signaled directly from the interrupt handler. 8987 8988Implemented support within the AML interpreter for package objects that 8989contain a larger AML length (package list length) than the package 8990element 8991count. In this case, the length of the package is truncated to match the 8992package element count. Some BIOS code apparently modifies the package 8993length 8994on the fly, and this change supports this behavior. Provides 8995compatibility 8996with the MS AML interpreter. (With assistance from Fiodor Suietov) 8997 8998Implemented a temporary fix for the BankValue parameter of a Bank Field 8999to 9000support all constant values, now including the Zero and One opcodes. 9001Evaluation of this parameter must eventually be converted to a full 9002TermArg 9003evaluation. A not-implemented error is now returned (temporarily) for 9004non- 9005constant values for this parameter. 9006 9007Fixed problem reports (Fiodor Suietov) integrated: 9008- Fix for premature object deletion after CopyObject on Operation Region 9009(BZ 9010350) 9011 9012Example Code and Data Size: These are the sizes for the OS-independent 9013acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9014debug version of the code includes the debug output trace mechanism and 9015has 9016a much larger code and data size. 9017 9018 Previous Release: 9019 Non-Debug Version: 80.7K Code, 18.0K Data, 98.7K Total 9020 Debug Version: 160.9K Code, 65.1K Data, 226.0K Total 9021 Current Release: 9022 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 9023 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 9024 9025 90262) iASL Compiler/Disassembler and Tools: 9027 9028No changes for this release. 9029 9030---------------------------------------- 903107 July 2006. Summary of changes for version 20060707: 9032 90331) ACPI CA Core Subsystem: 9034 9035Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers 9036that do not allow the initialization of address pointers within packed 9037structures - even though the hardware itself may support misaligned 9038transfers. Some of the debug data structures are packed by default to 9039minimize size. 9040 9041Added an error message for the case where AcpiOsGetThreadId() returns 9042zero. 9043A non-zero value is required by the core ACPICA code to ensure the proper 9044operation of AML mutexes and recursive control methods. 9045 9046The DSDT is now the only ACPI table that determines whether the AML 9047interpreter is in 32-bit or 64-bit mode. Not really a functional change, 9048but 9049the hooks for per-table 32/64 switching have been removed from the code. 9050A 9051clarification to the ACPI specification is forthcoming in ACPI 3.0B. 9052 9053Fixed a possible leak of an OwnerID in the error path of 9054AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID 9055deletion to a single place in AcpiTbUninstallTable to correct possible 9056leaks 9057when using the AcpiTbDeleteTablesByType interface (with assistance from 9058Lance Ortiz.) 9059 9060Fixed a problem with Serialized control methods where the semaphore 9061associated with the method could be over-signaled after multiple method 9062invocations. 9063 9064Fixed two issues with the locking of the internal namespace data 9065structure. 9066Both the Unload() operator and AcpiUnloadTable interface now lock the 9067namespace during the namespace deletion associated with the table unload 9068(with assistance from Linn Crosetto.) 9069 9070Fixed problem reports (Valery Podrezov) integrated: 9071- Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426) 9072 9073Fixed problem reports (Fiodor Suietov) integrated: 9074- Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369) 9075- On Address Space handler deletion, needless deactivation call (BZ 374) 9076- AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ 9077375) 9078- Possible memory leak, Notify sub-objects of Processor, Power, 9079ThermalZone 9080(BZ 376) 9081- AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378) 9082- Minimum Length of RSDT should be validated (BZ 379) 9083- AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no 9084Handler (BZ (380) 9085- AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type 9086loaded 9087(BZ 381) 9088 9089Example Code and Data Size: These are the sizes for the OS-independent 9090acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9091debug version of the code includes the debug output trace mechanism and 9092has 9093a much larger code and data size. 9094 9095 Previous Release: 9096 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 9097 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 9098 Current Release: 9099 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 9100 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 9101 9102 91032) iASL Compiler/Disassembler and Tools: 9104 9105Fixed problem reports: 9106Compiler segfault when ASL contains a long (>1024) String declaration (BZ 9107436) 9108 9109---------------------------------------- 911023 June 2006. Summary of changes for version 20060623: 9111 91121) ACPI CA Core Subsystem: 9113 9114Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This 9115allows the type to be customized to the host OS for improved efficiency 9116(since a spinlock is usually a very small object.) 9117 9118Implemented support for "ignored" bits in the ACPI registers. According 9119to 9120the ACPI specification, these bits should be preserved when writing the 9121registers via a read/modify/write cycle. There are 3 bits preserved in 9122this 9123manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11]. 9124 9125Implemented the initial deployment of new OSL mutex interfaces. Since 9126some 9127host operating systems have separate mutex and semaphore objects, this 9128feature was requested. The base code now uses mutexes (and the new mutex 9129interfaces) wherever a binary semaphore was used previously. However, for 9130the current release, the mutex interfaces are defined as macros to map 9131them 9132to the existing semaphore interfaces. Therefore, no OSL changes are 9133required 9134at this time. (See acpiosxf.h) 9135 9136Fixed several problems with the support for the control method SyncLevel 9137parameter. The SyncLevel now works according to the ACPI specification 9138and 9139in concert with the Mutex SyncLevel parameter, since the current 9140SyncLevel 9141is a property of the executing thread. Mutual exclusion for control 9142methods 9143is now implemented with a mutex instead of a semaphore. 9144 9145Fixed three instances of the use of the C shift operator in the bitfield 9146support code (exfldio.c) to avoid the use of a shift value larger than 9147the 9148target data width. The behavior of C compilers is undefined in this case 9149and 9150can cause unpredictable results, and therefore the case must be detected 9151and 9152avoided. (Fiodor Suietov) 9153 9154Added an info message whenever an SSDT or OEM table is loaded dynamically 9155via the Load() or LoadTable() ASL operators. This should improve 9156debugging 9157capability since it will show exactly what tables have been loaded 9158(beyond 9159the tables present in the RSDT/XSDT.) 9160 9161Example Code and Data Size: These are the sizes for the OS-independent 9162acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9163debug version of the code includes the debug output trace mechanism and 9164has 9165a much larger code and data size. 9166 9167 Previous Release: 9168 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 9169 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 9170 Current Release: 9171 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 9172 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 9173 9174 91752) iASL Compiler/Disassembler and Tools: 9176 9177No changes for this release. 9178 9179---------------------------------------- 918008 June 2006. Summary of changes for version 20060608: 9181 91821) ACPI CA Core Subsystem: 9183 9184Converted the locking mutex used for the ACPI hardware to a spinlock. 9185This 9186change should eliminate all problems caused by attempting to acquire a 9187semaphore at interrupt level, and it means that all ACPICA external 9188interfaces that directly access the ACPI hardware can be safely called 9189from 9190interrupt level. OSL code that implements the semaphore interfaces should 9191be 9192able to eliminate any workarounds for being called at interrupt level. 9193 9194Fixed a regression introduced in 20060526 where the ACPI device 9195initialization could be prematurely aborted with an AE_NOT_FOUND if a 9196device 9197did not have an optional _INI method. 9198 9199Fixed an IndexField issue where a write to the Data Register should be 9200limited in size to the AccessSize (width) of the IndexField itself. (BZ 9201433, 9202Fiodor Suietov) 9203 9204Fixed problem reports (Valery Podrezov) integrated: 9205- Allow store of ThermalZone objects to Debug object (BZ 5369/5370) 9206 9207Fixed problem reports (Fiodor Suietov) integrated: 9208- AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364) 9209 9210Removed four global mutexes that were obsolete and were no longer being 9211used. 9212 9213Example Code and Data Size: These are the sizes for the OS-independent 9214acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9215debug version of the code includes the debug output trace mechanism and 9216has 9217a much larger code and data size. 9218 9219 Previous Release: 9220 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 9221 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 9222 Current Release: 9223 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 9224 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 9225 9226 92272) iASL Compiler/Disassembler and Tools: 9228 9229Fixed a fault when using -g option (get tables from registry) on Windows 9230machines. 9231 9232Fixed problem reports integrated: 9233- Generate error if CreateField NumBits parameter is zero. (BZ 405) 9234- Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor 9235Suietov) 9236- Global table revision override (-r) is ignored (BZ 413) 9237 9238---------------------------------------- 923926 May 2006. Summary of changes for version 20060526: 9240 92411) ACPI CA Core Subsystem: 9242 9243Restructured, flattened, and simplified the internal interfaces for 9244namespace object evaluation - resulting in smaller code, less CPU stack 9245use, 9246and fewer interfaces. (With assistance from Mikhail Kouzmich) 9247 9248Fixed a problem with the CopyObject operator where the first parameter 9249was 9250not typed correctly for the parser, interpreter, compiler, and 9251disassembler. 9252Caused various errors and unexpected behavior. 9253 9254Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits 9255produced incorrect results with some C compilers. Since the behavior of C 9256compilers when the shift value is larger than the datatype width is 9257apparently not well defined, the interpreter now detects this condition 9258and 9259simply returns zero as expected in all such cases. (BZ 395) 9260 9261Fixed problem reports (Valery Podrezov) integrated: 9262- Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329) 9263- Allow interpreter to handle nested method declarations (BZ 5361) 9264 9265Fixed problem reports (Fiodor Suietov) integrated: 9266- AcpiTerminate doesn't free debug memory allocation list objects (BZ 9267355) 9268- After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ 9269356) 9270- AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357) 9271- Resource Manager should return AE_TYPE for non-device objects (BZ 358) 9272- Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359) 9273- Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360) 9274- Incomplete cleanup branch in AcpiPsParseAml (BZ 361) 9275- Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362) 9276- AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ 9277365) 9278- Status of the Global Initialization Handler call not used (BZ 366) 9279- Incorrect object parameter to Global Initialization Handler (BZ 367) 9280 9281Example Code and Data Size: These are the sizes for the OS-independent 9282acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9283debug version of the code includes the debug output trace mechanism and 9284has 9285a much larger code and data size. 9286 9287 Previous Release: 9288 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 9289 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 9290 Current Release: 9291 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 9292 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 9293 9294 92952) iASL Compiler/Disassembler and Tools: 9296 9297Modified the parser to allow the names IO, DMA, and IRQ to be used as 9298namespace identifiers with no collision with existing resource descriptor 9299macro names. This provides compatibility with other ASL compilers and is 9300most useful for disassembly/recompilation of existing tables without 9301parse 9302errors. (With assistance from Thomas Renninger) 9303 9304Disassembler: fixed an incorrect disassembly problem with the 9305DataTableRegion and CopyObject operators. Fixed a possible fault during 9306disassembly of some Alias operators. 9307 9308---------------------------------------- 930912 May 2006. Summary of changes for version 20060512: 9310 93111) ACPI CA Core Subsystem: 9312 9313Replaced the AcpiOsQueueForExecution interface with a new interface named 9314AcpiOsExecute. The major difference is that the new interface does not 9315have 9316a Priority parameter, this appeared to be useless and has been replaced 9317by 9318a 9319Type parameter. The Type tells the host what type of execution is being 9320requested, such as global lock handler, notify handler, GPE handler, etc. 9321This allows the host to queue and execute the request as appropriate for 9322the 9323request type, possibly using different work queues and different 9324priorities 9325for the various request types. This enables fixes for multithreading 9326deadlock problems such as BZ #5534, and will require changes to all 9327existing 9328OS interface layers. (Alexey Starikovskiy and Bob Moore) 9329 9330Fixed a possible memory leak associated with the support for the so- 9331called 9332"implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor 9333Suietov) 9334 9335Fixed a problem with the Load() operator where a table load from an 9336operation region could overwrite an internal table buffer by up to 7 9337bytes 9338and cause alignment faults on IPF systems. (With assistance from Luming 9339Yu) 9340 9341Example Code and Data Size: These are the sizes for the OS-independent 9342acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9343debug version of the code includes the debug output trace mechanism and 9344has 9345a much larger code and data size. 9346 9347 Previous Release: 9348 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 9349 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 9350 Current Release: 9351 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 9352 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 9353 9354 9355 93562) iASL Compiler/Disassembler and Tools: 9357 9358Disassembler: Implemented support to cross reference the internal 9359namespace 9360and automatically generate ASL External() statements for symbols not 9361defined 9362within the current table being disassembled. This will simplify the 9363disassembly and recompilation of interdependent tables such as SSDTs 9364since 9365these statements will no longer have to be added manually. 9366 9367Disassembler: Implemented experimental support to automatically detect 9368invocations of external control methods and generate appropriate 9369External() 9370statements. This is problematic because the AML cannot be correctly 9371parsed 9372until the number of arguments for each control method is known. 9373Currently, 9374standalone method invocations and invocations as the source operand of a 9375Store() statement are supported. 9376 9377Disassembler: Implemented support for the ASL pseudo-operators LNotEqual, 9378LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()), 9379LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code 9380more readable and likely closer to the original ASL source. 9381 9382---------------------------------------- 938321 April 2006. Summary of changes for version 20060421: 9384 93851) ACPI CA Core Subsystem: 9386 9387Removed a device initialization optimization introduced in 20051216 where 9388the _STA method was not run unless an _INI was also present for the same 9389device. This optimization could cause problems because it could allow 9390_INI 9391methods to be run within a not-present device subtree. (If a not-present 9392device had no _INI, _STA would not be run, the not-present status would 9393not 9394be discovered, and the children of the device would be incorrectly 9395traversed.) 9396 9397Implemented a new _STA optimization where namespace subtrees that do not 9398contain _INI are identified and ignored during device initialization. 9399Selectively running _STA can significantly improve boot time on large 9400machines (with assistance from Len Brown.) 9401 9402Implemented support for the device initialization case where the returned 9403_STA flags indicate a device not-present but functioning. In this case, 9404_INI 9405is not run, but the device children are examined for presence, as per the 9406ACPI specification. 9407 9408Implemented an additional change to the IndexField support in order to 9409conform to MS behavior. The value written to the Index Register is not 9410simply a byte offset, it is a byte offset in units of the access width of 9411the parent Index Field. (Fiodor Suietov) 9412 9413Defined and deployed a new OSL interface, AcpiOsValidateAddress. This 9414interface is called during the creation of all AML operation regions, and 9415allows the host OS to exert control over what addresses it will allow the 9416AML code to access. Operation Regions whose addresses are disallowed will 9417cause a runtime exception when they are actually accessed (will not 9418affect 9419or abort table loading.) See oswinxf or osunixxf for an example 9420implementation. 9421 9422Defined and deployed a new OSL interface, AcpiOsValidateInterface. This 9423interface allows the host OS to match the various "optional" 9424interface/behavior strings for the _OSI predefined control method as 9425appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf 9426for an example implementation. 9427 9428Restructured and corrected various problems in the exception handling 9429code 9430paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod 9431(with assistance from Takayoshi Kochi.) 9432 9433Modified the Linux source converter to ignore quoted string literals 9434while 9435converting identifiers from mixed to lower case. This will correct 9436problems 9437with the disassembler and other areas where such strings must not be 9438modified. 9439 9440The ACPI_FUNCTION_* macros no longer require quotes around the function 9441name. This allows the Linux source converter to convert the names, now 9442that 9443the converter ignores quoted strings. 9444 9445Example Code and Data Size: These are the sizes for the OS-independent 9446acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9447debug version of the code includes the debug output trace mechanism and 9448has 9449a much larger code and data size. 9450 9451 Previous Release: 9452 9453 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 9454 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 9455 Current Release: 9456 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 9457 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 9458 9459 94602) iASL Compiler/Disassembler and Tools: 9461 9462Implemented 3 new warnings for iASL, and implemented multiple warning 9463levels 9464(w2 flag). 9465 94661) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is 9467not 9468WAIT_FOREVER (0xFFFF) and the code does not examine the return value to 9469check for the possible timeout, a warning is issued. 9470 94712) Useless operators: If an ASL operator does not specify an optional 9472target 9473operand and it also does not use the function return value from the 9474operator, a warning is issued since the operator effectively does 9475nothing. 9476 94773) Unreferenced objects: If a namespace object is created, but never 9478referenced, a warning is issued. This is a warning level 2 since there 9479are 9480cases where this is ok, such as when a secondary table is loaded that 9481uses 9482the unreferenced objects. Even so, care is taken to only flag objects 9483that 9484don't look like they will ever be used. For example, the reserved methods 9485(starting with an underscore) are usually not referenced because it is 9486expected that the OS will invoke them. 9487 9488---------------------------------------- 948931 March 2006. Summary of changes for version 20060331: 9490 94911) ACPI CA Core Subsystem: 9492 9493Implemented header file support for the following additional ACPI tables: 9494ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this 9495support, 9496all current and known ACPI tables are now defined in the ACPICA headers 9497and 9498are available for use by device drivers and other software. 9499 9500Implemented support to allow tables that contain ACPI names with invalid 9501characters to be loaded. Previously, this would cause the table load to 9502fail, but since there are several known cases of such tables on existing 9503machines, this change was made to enable ACPI support for them. Also, 9504this 9505matches the behavior of the Microsoft ACPI implementation. 9506 9507Fixed a couple regressions introduced during the memory optimization in 9508the 950920060317 release. The namespace node definition required additional 9510reorganization and an internal datatype that had been changed to 8-bit 9511was 9512restored to 32-bit. (Valery Podrezov) 9513 9514Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState 9515could be passed through to AcpiOsReleaseObject which is unexpected. Such 9516null pointers are now trapped and ignored, matching the behavior of the 9517previous implementation before the deployment of AcpiOsReleaseObject. 9518(Valery Podrezov, Fiodor Suietov) 9519 9520Fixed a memory mapping leak during the deletion of a SystemMemory 9521operation 9522region where a cached memory mapping was not deleted. This became a 9523noticeable problem for operation regions that are defined within 9524frequently 9525used control methods. (Dana Meyers) 9526 9527Reorganized the ACPI table header files into two main files: one for the 9528ACPI tables consumed by the ACPICA core, and another for the 9529miscellaneous 9530ACPI tables that are consumed by the drivers and other software. The 9531various 9532FADT definitions were merged into one common section and three different 9533tables (ACPI 1.0, 1.0+, and 2.0) 9534 9535Example Code and Data Size: These are the sizes for the OS-independent 9536acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9537debug version of the code includes the debug output trace mechanism and 9538has 9539a much larger code and data size. 9540 9541 Previous Release: 9542 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 9543 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 9544 Current Release: 9545 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 9546 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 9547 9548 95492) iASL Compiler/Disassembler and Tools: 9550 9551Disassembler: Implemented support to decode and format all non-AML ACPI 9552tables (tables other than DSDTs and SSDTs.) This includes the new tables 9553added to the ACPICA headers, therefore all current and known ACPI tables 9554are 9555supported. 9556 9557Disassembler: The change to allow ACPI names with invalid characters also 9558enables the disassembly of such tables. Invalid characters within names 9559are 9560changed to '*' to make the name printable; the iASL compiler will still 9561generate an error for such names, however, since this is an invalid ACPI 9562character. 9563 9564Implemented an option for AcpiXtract (-a) to extract all tables found in 9565the 9566input file. The default invocation extracts only the DSDTs and SSDTs. 9567 9568Fixed a couple of gcc generation issues for iASL and AcpiExec and added a 9569makefile for the AcpiXtract utility. 9570 9571---------------------------------------- 957217 March 2006. Summary of changes for version 20060317: 9573 95741) ACPI CA Core Subsystem: 9575 9576Implemented the use of a cache object for all internal namespace nodes. 9577Since there are about 1000 static nodes in a typical system, this will 9578decrease memory use for cache implementations that minimize per- 9579allocation 9580overhead (such as a slab allocator.) 9581 9582Removed the reference count mechanism for internal namespace nodes, since 9583it 9584was deemed unnecessary. This reduces the size of each namespace node by 9585about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit 9586case, 9587and 32 bytes for the 64-bit case. 9588 9589Optimized several internal data structures to reduce object size on 64- 9590bit 9591platforms by packing data within the 64-bit alignment. This includes the 9592frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static 9593instances corresponding to the namespace objects. 9594 9595Added two new strings for the predefined _OSI method: "Windows 2001.1 9596SP1" 9597and "Windows 2006". 9598 9599Split the allocation tracking mechanism out to a separate file, from 9600utalloc.c to uttrack.c. This mechanism appears to be only useful for 9601application-level code. Kernels may wish to not include uttrack.c in 9602distributions. 9603 9604Removed all remnants of the obsolete ACPI_REPORT_* macros and the 9605associated 9606code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING 9607macros.) 9608 9609Code and Data Size: These are the sizes for the acpica.lib produced by 9610the 9611Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any 9612ACPI 9613driver or OSPM code. The debug version of the code includes the debug 9614output 9615trace mechanism and has a much larger code and data size. Note that these 9616values will vary depending on the efficiency of the compiler and the 9617compiler options used during generation. 9618 9619 Previous Release: 9620 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 9621 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 9622 Current Release: 9623 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 9624 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 9625 9626 96272) iASL Compiler/Disassembler and Tools: 9628 9629Implemented an ANSI C version of the acpixtract utility. This version 9630will 9631automatically extract the DSDT and all SSDTs from the input acpidump text 9632file and dump the binary output to separate files. It can also display a 9633summary of the input file including the headers for each table found and 9634will extract any single ACPI table, with any signature. (See 9635source/tools/acpixtract) 9636 9637---------------------------------------- 963810 March 2006. Summary of changes for version 20060310: 9639 96401) ACPI CA Core Subsystem: 9641 9642Tagged all external interfaces to the subsystem with the new 9643ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to 9644assist 9645kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL 9646macro. The default definition is NULL. 9647 9648Added the ACPI_THREAD_ID type for the return value from 9649AcpiOsGetThreadId. 9650This allows the host to define this as necessary to simplify kernel 9651integration. The default definition is ACPI_NATIVE_UINT. 9652 9653Fixed two interpreter problems related to error processing, the deletion 9654of 9655objects, and placing invalid pointers onto the internal operator result 9656stack. BZ 6028, 6151 (Valery Podrezov) 9657 9658Increased the reference count threshold where a warning is emitted for 9659large 9660reference counts in order to eliminate unnecessary warnings on systems 9661with 9662large namespaces (especially 64-bit.) Increased the value from 0x400 to 96630x800. 9664 9665Due to universal disagreement as to the meaning of the 'c' in the 9666calloc() 9667function, the ACPI_MEM_CALLOCATE macro has been renamed to 9668ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'. 9669ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and 9670ACPI_FREE. 9671 9672Code and Data Size: These are the sizes for the acpica.lib produced by 9673the 9674Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any 9675ACPI 9676driver or OSPM code. The debug version of the code includes the debug 9677output 9678trace mechanism and has a much larger code and data size. Note that these 9679values will vary depending on the efficiency of the compiler and the 9680compiler options used during generation. 9681 9682 Previous Release: 9683 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 9684 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 9685 Current Release: 9686 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 9687 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 9688 9689 96902) iASL Compiler/Disassembler: 9691 9692Disassembler: implemented support for symbolic resource descriptor 9693references. If a CreateXxxxField operator references a fixed offset 9694within 9695a 9696resource descriptor, a name is assigned to the descriptor and the offset 9697is 9698translated to the appropriate resource tag and pathname. The addition of 9699this support brings the disassembled code very close to the original ASL 9700source code and helps eliminate run-time errors when the disassembled 9701code 9702is modified (and recompiled) in such a way as to invalidate the original 9703fixed offsets. 9704 9705Implemented support for a Descriptor Name as the last parameter to the 9706ASL 9707Register() macro. This parameter was inadvertently left out of the ACPI 9708specification, and will be added for ACPI 3.0b. 9709 9710Fixed a problem where the use of the "_OSI" string (versus the full path 9711"\_OSI") caused an internal compiler error. ("No back ptr to op") 9712 9713Fixed a problem with the error message that occurs when an invalid string 9714is 9715used for a _HID object (such as one with an embedded asterisk: 9716"*PNP010A".) 9717The correct message is now displayed. 9718 9719---------------------------------------- 972017 February 2006. Summary of changes for version 20060217: 9721 97221) ACPI CA Core Subsystem: 9723 9724Implemented a change to the IndexField support to match the behavior of 9725the 9726Microsoft AML interpreter. The value written to the Index register is now 9727a 9728byte offset, no longer an index based upon the width of the Data 9729register. 9730This should fix IndexField problems seen on some machines where the Data 9731register is not exactly one byte wide. The ACPI specification will be 9732clarified on this point. 9733 9734Fixed a problem where several resource descriptor types could overrun the 9735internal descriptor buffer due to size miscalculation: VendorShort, 9736VendorLong, and Interrupt. This was noticed on IA64 machines, but could 9737affect all platforms. 9738 9739Fixed a problem where individual resource descriptors were misaligned 9740within 9741the internal buffer, causing alignment faults on IA64 platforms. 9742 9743Code and Data Size: These are the sizes for the acpica.lib produced by 9744the 9745Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any 9746ACPI 9747driver or OSPM code. The debug version of the code includes the debug 9748output 9749trace mechanism and has a much larger code and data size. Note that these 9750values will vary depending on the efficiency of the compiler and the 9751compiler options used during generation. 9752 9753 Previous Release: 9754 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 9755 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 9756 Current Release: 9757 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 9758 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 9759 9760 97612) iASL Compiler/Disassembler: 9762 9763Implemented support for new reserved names: _WDG and _WED are Microsoft 9764extensions for Windows Instrumentation Management, _TDL is a new ACPI- 9765defined method (Throttling Depth Limit.) 9766 9767Fixed a problem where a zero-length VendorShort or VendorLong resource 9768descriptor was incorrectly emitted as a descriptor of length one. 9769 9770---------------------------------------- 977110 February 2006. Summary of changes for version 20060210: 9772 97731) ACPI CA Core Subsystem: 9774 9775Removed a couple of extraneous ACPI_ERROR messages that appeared during 9776normal execution. These became apparent after the conversion from 9777ACPI_DEBUG_PRINT. 9778 9779Fixed a problem where the CreateField operator could hang if the BitIndex 9780or 9781NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359) 9782 9783Fixed a problem where a DeRefOf operation on a buffer object incorrectly 9784failed with an exception. This also fixes a couple of related RefOf and 9785DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387) 9786 9787Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead 9788of 9789AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov, 9790BZ 97915480) 9792 9793Implemented a memory cleanup at the end of the execution of each 9794iteration 9795of an AML While() loop, preventing the accumulation of outstanding 9796objects. 9797(Valery Podrezov, BZ 5427) 9798 9799Eliminated a chunk of duplicate code in the object resolution code. 9800(Valery 9801Podrezov, BZ 5336) 9802 9803Fixed several warnings during the 64-bit code generation. 9804 9805The AcpiSrc source code conversion tool now inserts one line of 9806whitespace 9807after an if() statement that is followed immediately by a comment, 9808improving 9809readability of the Linux code. 9810 9811Code and Data Size: The current and previous library sizes for the core 9812subsystem are shown below. These are the code and data sizes for the 9813acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 9814These 9815values do not include any ACPI driver or OSPM code. The debug version of 9816the 9817code includes the debug output trace mechanism and has a much larger code 9818and data size. Note that these values will vary depending on the 9819efficiency 9820of the compiler and the compiler options used during generation. 9821 9822 Previous Release: 9823 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 9824 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 9825 Current Release: 9826 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 9827 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 9828 9829 98302) iASL Compiler/Disassembler: 9831 9832Fixed a problem with the disassembly of a BankField operator with a 9833complex 9834expression for the BankValue parameter. 9835 9836---------------------------------------- 983727 January 2006. Summary of changes for version 20060127: 9838 98391) ACPI CA Core Subsystem: 9840 9841Implemented support in the Resource Manager to allow unresolved 9842namestring 9843references within resource package objects for the _PRT method. This 9844support 9845is in addition to the previously implemented unresolved reference support 9846within the AML parser. If the interpreter slack mode is enabled, these 9847unresolved references will be passed through to the caller as a NULL 9848package 9849entry. 9850 9851Implemented and deployed new macros and functions for error and warning 9852messages across the subsystem. These macros are simpler and generate less 9853code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION, 9854ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older 9855macros remain defined to allow ACPI drivers time to migrate to the new 9856macros. 9857 9858Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of 9859the 9860Acquire/Release Lock OSL interfaces. 9861 9862Fixed a problem where Alias ASL operators are sometimes not correctly 9863resolved, in both the interpreter and the iASL compiler. 9864 9865Fixed several problems with the implementation of the 9866ConcatenateResTemplate 9867ASL operator. As per the ACPI specification, zero length buffers are now 9868treated as a single EndTag. One-length buffers always cause a fatal 9869exception. Non-zero length buffers that do not end with a full 2-byte 9870EndTag 9871cause a fatal exception. 9872 9873Fixed a possible structure overwrite in the AcpiGetObjectInfo external 9874interface. (With assistance from Thomas Renninger) 9875 9876Code and Data Size: The current and previous library sizes for the core 9877subsystem are shown below. These are the code and data sizes for the 9878acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 9879These 9880values do not include any ACPI driver or OSPM code. The debug version of 9881the 9882code includes the debug output trace mechanism and has a much larger code 9883and data size. Note that these values will vary depending on the 9884efficiency 9885of the compiler and the compiler options used during generation. 9886 9887 Previous Release: 9888 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 9889 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 9890 Current Release: 9891 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 9892 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 9893 9894 98952) iASL Compiler/Disassembler: 9896 9897Fixed an internal error that was generated for any forward references to 9898ASL 9899Alias objects. 9900 9901---------------------------------------- 990213 January 2006. Summary of changes for version 20060113: 9903 99041) ACPI CA Core Subsystem: 9905 9906Added 2006 copyright to all module headers and signons. This affects 9907virtually every file in the ACPICA core subsystem, iASL compiler, and the 9908utilities. 9909 9910Enhanced the ACPICA error reporting in order to simplify user migration 9911to 9912the non-debug version of ACPICA. Replaced all instances of the 9913ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN 9914debug 9915levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros, 9916respectively. This preserves all error and warning messages in the non- 9917debug 9918version of the ACPICA code (this has been referred to as the "debug lite" 9919option.) Over 200 cases were converted to create a total of over 380 9920error/warning messages across the ACPICA code. This increases the code 9921and 9922data size of the default non-debug version of the code somewhat (about 992313K), 9924but all error/warning reporting may be disabled if desired (and code 9925eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time 9926configuration option. The size of the debug version of ACPICA remains 9927about 9928the same. 9929 9930Fixed a memory leak within the AML Debugger "Set" command. One object was 9931not properly deleted for every successful invocation of the command. 9932 9933Code and Data Size: The current and previous library sizes for the core 9934subsystem are shown below. These are the code and data sizes for the 9935acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 9936These 9937values do not include any ACPI driver or OSPM code. The debug version of 9938the 9939code includes the debug output trace mechanism and has a much larger code 9940and data size. Note that these values will vary depending on the 9941efficiency 9942of the compiler and the compiler options used during generation. 9943 9944 Previous Release: 9945 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 9946 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 9947 Current Release: 9948 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 9949 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 9950 9951 99522) iASL Compiler/Disassembler: 9953 9954The compiler now officially supports the ACPI 3.0a specification that was 9955released on December 30, 2005. (Specification is available at 9956www.acpi.info) 9957 9958---------------------------------------- 995916 December 2005. Summary of changes for version 20051216: 9960 99611) ACPI CA Core Subsystem: 9962 9963Implemented optional support to allow unresolved names within ASL Package 9964objects. A null object is inserted in the package when a named reference 9965cannot be located in the current namespace. Enabled via the interpreter 9966slack flag, this should eliminate AE_NOT_FOUND exceptions seen on 9967machines 9968that contain such code. 9969 9970Implemented an optimization to the initialization sequence that can 9971improve 9972boot time. During ACPI device initialization, the _STA method is now run 9973if 9974and only if the _INI method exists. The _STA method is used to determine 9975if 9976the device is present; An _INI can only be run if _STA returns present, 9977but 9978it is a waste of time to run the _STA method if the _INI does not exist. 9979(Prototype and assistance from Dong Wei) 9980 9981Implemented use of the C99 uintptr_t for the pointer casting macros if it 9982is 9983available in the current compiler. Otherwise, the default (void *) cast 9984is 9985used as before. 9986 9987Fixed some possible memory leaks found within the execution path of the 9988Break, Continue, If, and CreateField operators. (Valery Podrezov) 9989 9990Fixed a problem introduced in the 20051202 release where an exception is 9991generated during method execution if a control method attempts to declare 9992another method. 9993 9994Moved resource descriptor string constants that are used by both the AML 9995disassembler and AML debugger to the common utilities directory so that 9996these components are independent. 9997 9998Implemented support in the AcpiExec utility (-e switch) to globally 9999ignore 10000exceptions during control method execution (method is not aborted.) 10001 10002Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix 10003generation. 10004 10005Code and Data Size: The current and previous library sizes for the core 10006subsystem are shown below. These are the code and data sizes for the 10007acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 10008These 10009values do not include any ACPI driver or OSPM code. The debug version of 10010the 10011code includes the debug output trace mechanism and has a much larger code 10012and data size. Note that these values will vary depending on the 10013efficiency 10014of the compiler and the compiler options used during generation. 10015 10016 Previous Release: 10017 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 10018 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 10019 Current Release: 10020 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 10021 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 10022 10023 100242) iASL Compiler/Disassembler: 10025 10026Fixed a problem where a CPU stack overflow fault could occur if a 10027recursive 10028method call was made from within a Return statement. 10029 10030---------------------------------------- 1003102 December 2005. Summary of changes for version 20051202: 10032 100331) ACPI CA Core Subsystem: 10034 10035Modified the parsing of control methods to no longer create namespace 10036objects during the first pass of the parse. Objects are now created only 10037during the execute phase, at the moment the namespace creation operator 10038is 10039encountered in the AML (Name, OperationRegion, CreateByteField, etc.) 10040This 10041should eliminate ALREADY_EXISTS exceptions seen on some machines where 10042reentrant control methods are protected by an AML mutex. The mutex will 10043now 10044correctly block multiple threads from attempting to create the same 10045object 10046more than once. 10047 10048Increased the number of available Owner Ids for namespace object tracking 10049from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen 10050on 10051some machines with a large number of ACPI tables (either static or 10052dynamic). 10053 10054Fixed a problem with the AcpiExec utility where a fault could occur when 10055the 10056-b switch (batch mode) is used. 10057 10058Enhanced the namespace dump routine to output the owner ID for each 10059namespace object. 10060 10061Code and Data Size: The current and previous library sizes for the core 10062subsystem are shown below. These are the code and data sizes for the 10063acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 10064These 10065values do not include any ACPI driver or OSPM code. The debug version of 10066the 10067code includes the debug output trace mechanism and has a much larger code 10068and data size. Note that these values will vary depending on the 10069efficiency 10070of the compiler and the compiler options used during generation. 10071 10072 Previous Release: 10073 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 10074 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 10075 Current Release: 10076 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 10077 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 10078 10079 100802) iASL Compiler/Disassembler: 10081 10082Fixed a parse error during compilation of certain Switch/Case constructs. 10083To 10084simplify the parse, the grammar now allows for multiple Default 10085statements 10086and this error is now detected and flagged during the analysis phase. 10087 10088Disassembler: The disassembly now includes the contents of the original 10089table header within a comment at the start of the file. This includes the 10090name and version of the original ASL compiler. 10091 10092---------------------------------------- 1009317 November 2005. Summary of changes for version 20051117: 10094 100951) ACPI CA Core Subsystem: 10096 10097Fixed a problem in the AML parser where the method thread count could be 10098decremented below zero if any errors occurred during the method parse 10099phase. 10100This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some 10101machines. 10102This also fixed a related regression with the mechanism that detects and 10103corrects methods that cannot properly handle reentrancy (related to the 10104deployment of the new OwnerId mechanism.) 10105 10106Eliminated the pre-parsing of control methods (to detect errors) during 10107table load. Related to the problem above, this was causing unwind issues 10108if 10109any errors occurred during the parse, and it seemed to be overkill. A 10110table 10111load should not be aborted if there are problems with any single control 10112method, thus rendering this feature rather pointless. 10113 10114Fixed a problem with the new table-driven resource manager where an 10115internal 10116buffer overflow could occur for small resource templates. 10117 10118Implemented a new external interface, AcpiGetVendorResource. This 10119interface 10120will find and return a vendor-defined resource descriptor within a _CRS 10121or 10122_PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn 10123Helgaas. 10124 10125Removed the length limit (200) on string objects as per the upcoming ACPI 101263.0A specification. This affects the following areas of the interpreter: 101271) 10128any implicit conversion of a Buffer to a String, 2) a String object 10129result 10130of the ASL Concatentate operator, 3) the String object result of the ASL 10131ToString operator. 10132 10133Fixed a problem in the Windows OS interface layer (OSL) where a 10134WAIT_FOREVER 10135on a semaphore object would incorrectly timeout. This allows the 10136multithreading features of the AcpiExec utility to work properly under 10137Windows. 10138 10139Updated the Linux makefiles for the iASL compiler and AcpiExec to include 10140the recently added file named "utresrc.c". 10141 10142Code and Data Size: The current and previous library sizes for the core 10143subsystem are shown below. These are the code and data sizes for the 10144acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 10145These 10146values do not include any ACPI driver or OSPM code. The debug version of 10147the 10148code includes the debug output trace mechanism and has a much larger code 10149and data size. Note that these values will vary depending on the 10150efficiency 10151of the compiler and the compiler options used during generation. 10152 10153 Previous Release: 10154 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 10155 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 10156 Current Release: 10157 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 10158 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 10159 10160 101612) iASL Compiler/Disassembler: 10162 10163Removed the limit (200) on string objects as per the upcoming ACPI 3.0A 10164specification. For the iASL compiler, this means that string literals 10165within 10166the source ASL can be of any length. 10167 10168Enhanced the listing output to dump the AML code for resource descriptors 10169immediately after the ASL code for each descriptor, instead of in a block 10170at 10171the end of the entire resource template. 10172 10173Enhanced the compiler debug output to dump the entire original parse tree 10174constructed during the parse phase, before any transforms are applied to 10175the 10176tree. The transformed tree is dumped also. 10177 10178---------------------------------------- 1017902 November 2005. Summary of changes for version 20051102: 10180 101811) ACPI CA Core Subsystem: 10182 10183Modified the subsystem initialization sequence to improve GPE support. 10184The 10185GPE initialization has been split into two parts in order to defer 10186execution 10187of the _PRW methods (Power Resources for Wake) until after the hardware 10188is 10189fully initialized and the SCI handler is installed. This allows the _PRW 10190methods to access fields protected by the Global Lock. This will fix 10191systems 10192where a NO_GLOBAL_LOCK exception has been seen during initialization. 10193 10194Converted the ACPI internal object disassemble and display code within 10195the 10196AML debugger to fully table-driven operation, reducing code size and 10197increasing maintainability. 10198 10199Fixed a regression with the ConcatenateResTemplate() ASL operator 10200introduced 10201in the 20051021 release. 10202 10203Implemented support for "local" internal ACPI object types within the 10204debugger "Object" command and the AcpiWalkNamespace external interfaces. 10205These local types include RegionFields, BankFields, IndexFields, Alias, 10206and 10207reference objects. 10208 10209Moved common AML resource handling code into a new file, "utresrc.c". 10210This 10211code is shared by both the Resource Manager and the AML Debugger. 10212 10213Code and Data Size: The current and previous library sizes for the core 10214subsystem are shown below. These are the code and data sizes for the 10215acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 10216These 10217values do not include any ACPI driver or OSPM code. The debug version of 10218the 10219code includes the debug output trace mechanism and has a much larger code 10220and data size. Note that these values will vary depending on the 10221efficiency 10222of the compiler and the compiler options used during generation. 10223 10224 Previous Release: 10225 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 10226 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 10227 Current Release: 10228 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 10229 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 10230 10231 102322) iASL Compiler/Disassembler: 10233 10234Fixed a problem with very large initializer lists (more than 4000 10235elements) 10236for both Buffer and Package objects where the parse stack could overflow. 10237 10238Enhanced the pre-compile source code scan for non-ASCII characters to 10239ignore 10240characters within comment fields. The scan is now always performed and is 10241no 10242longer optional, detecting invalid characters within a source file 10243immediately rather than during the parse phase or later. 10244 10245Enhanced the ASL grammar definition to force early reductions on all 10246list- 10247style grammar elements so that the overall parse stack usage is greatly 10248reduced. This should improve performance and reduce the possibility of 10249parse 10250stack overflow. 10251 10252Eliminated all reduce/reduce conflicts in the iASL parser generation. 10253Also, 10254with the addition of a %expected statement, the compiler generates from 10255source with no warnings. 10256 10257Fixed a possible segment fault in the disassembler if the input filename 10258does not contain a "dot" extension (Thomas Renninger). 10259 10260---------------------------------------- 1026121 October 2005. Summary of changes for version 20051021: 10262 102631) ACPI CA Core Subsystem: 10264 10265Implemented support for the EM64T and other x86-64 processors. This 10266essentially entails recognizing that these processors support non-aligned 10267memory transfers. Previously, all 64-bit processors were assumed to lack 10268hardware support for non-aligned transfers. 10269 10270Completed conversion of the Resource Manager to nearly full table-driven 10271operation. Specifically, the resource conversion code (convert AML to 10272internal format and the reverse) and the debug code to dump internal 10273resource descriptors are fully table-driven, reducing code and data size 10274and 10275improving maintainability. 10276 10277The OSL interfaces for Acquire and Release Lock now use a 64-bit flag 10278word 10279on 64-bit processors instead of a fixed 32-bit word. (With assistance 10280from 10281Alexey Starikovskiy) 10282 10283Implemented support within the resource conversion code for the Type- 10284Specific byte within the various ACPI 3.0 *WordSpace macros. 10285 10286Fixed some issues within the resource conversion code for the type- 10287specific 10288flags for both Memory and I/O address resource descriptors. For Memory, 10289implemented support for the MTP and TTP flags. For I/O, split the TRS and 10290TTP flags into two separate fields. 10291 10292Code and Data Size: The current and previous library sizes for the core 10293subsystem are shown below. These are the code and data sizes for the 10294acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 10295These 10296values do not include any ACPI driver or OSPM code. The debug version of 10297the 10298code includes the debug output trace mechanism and has a much larger code 10299and data size. Note that these values will vary depending on the 10300efficiency 10301of the compiler and the compiler options used during generation. 10302 10303 Previous Release: 10304 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 10305 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 10306 Current Release: 10307 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 10308 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 10309 10310 10311 103122) iASL Compiler/Disassembler: 10313 10314Relaxed a compiler restriction that disallowed a ResourceIndex byte if 10315the 10316corresponding ResourceSource string was not also present in a resource 10317descriptor declaration. This restriction caused problems with existing 10318AML/ASL code that includes the Index byte without the string. When such 10319AML 10320was disassembled, it could not be compiled without modification. Further, 10321the modified code created a resource template with a different size than 10322the 10323original, breaking code that used fixed offsets into the resource 10324template 10325buffer. 10326 10327Removed a recent feature of the disassembler to ignore a lone 10328ResourceIndex 10329byte. This byte is now emitted if present so that the exact AML can be 10330reproduced when the disassembled code is recompiled. 10331 10332Improved comments and text alignment for the resource descriptor code 10333emitted by the disassembler. 10334 10335Implemented disassembler support for the ACPI 3.0 AccessSize field within 10336a 10337Register() resource descriptor. 10338 10339---------------------------------------- 1034030 September 2005. Summary of changes for version 20050930: 10341 103421) ACPI CA Core Subsystem: 10343 10344Completed a major overhaul of the Resource Manager code - specifically, 10345optimizations in the area of the AML/internal resource conversion code. 10346The 10347code has been optimized to simplify and eliminate duplicated code, CPU 10348stack 10349use has been decreased by optimizing function parameters and local 10350variables, and naming conventions across the manager have been 10351standardized 10352for clarity and ease of maintenance (this includes function, parameter, 10353variable, and struct/typedef names.) The update may force changes in some 10354driver code, depending on how resources are handled by the host OS. 10355 10356All Resource Manager dispatch and information tables have been moved to a 10357single location for clarity and ease of maintenance. One new file was 10358created, named "rsinfo.c". 10359 10360The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to 10361guarantee that the argument is not evaluated twice, making them less 10362prone 10363to macro side-effects. However, since there exists the possibility of 10364additional stack use if a particular compiler cannot optimize them (such 10365as 10366in the debug generation case), the original macros are optionally 10367available. 10368Note that some invocations of the return_VALUE macro may now cause size 10369mismatch warnings; the return_UINT8 and return_UINT32 macros are provided 10370to 10371eliminate these. (From Randy Dunlap) 10372 10373Implemented a new mechanism to enable debug tracing for individual 10374control 10375methods. A new external interface, AcpiDebugTrace, is provided to enable 10376this mechanism. The intent is to allow the host OS to easily enable and 10377disable tracing for problematic control methods. This interface can be 10378easily exposed to a user or debugger interface if desired. See the file 10379psxface.c for details. 10380 10381AcpiUtCallocate will now return a valid pointer if a length of zero is 10382specified - a length of one is used and a warning is issued. This matches 10383the behavior of AcpiUtAllocate. 10384 10385Code and Data Size: The current and previous library sizes for the core 10386subsystem are shown below. These are the code and data sizes for the 10387acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 10388These 10389values do not include any ACPI driver or OSPM code. The debug version of 10390the 10391code includes the debug output trace mechanism and has a much larger code 10392and data size. Note that these values will vary depending on the 10393efficiency 10394of the compiler and the compiler options used during generation. 10395 10396 Previous Release: 10397 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 10398 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 10399 Current Release: 10400 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 10401 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 10402 10403 104042) iASL Compiler/Disassembler: 10405 10406A remark is issued if the effective compile-time length of a package or 10407buffer is zero. Previously, this was a warning. 10408 10409---------------------------------------- 1041016 September 2005. Summary of changes for version 20050916: 10411 104121) ACPI CA Core Subsystem: 10413 10414Fixed a problem within the Resource Manager where support for the Generic 10415Register descriptor was not fully implemented. This descriptor is now 10416fully 10417recognized, parsed, disassembled, and displayed. 10418 10419Completely restructured the Resource Manager code to utilize table-driven 10420dispatch and lookup, eliminating many of the large switch() statements. 10421This 10422reduces overall subsystem code size and code complexity. Affects the 10423resource parsing and construction, disassembly, and debug dump output. 10424 10425Cleaned up and restructured the debug dump output for all resource 10426descriptors. Improved readability of the output and reduced code size. 10427 10428Fixed a problem where changes to internal data structures caused the 10429optional ACPI_MUTEX_DEBUG code to fail compilation if specified. 10430 10431Code and Data Size: The current and previous library sizes for the core 10432subsystem are shown below. These are the code and data sizes for the 10433acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 10434These 10435values do not include any ACPI driver or OSPM code. The debug version of 10436the 10437code includes the debug output trace mechanism and has a much larger code 10438and data size. Note that these values will vary depending on the 10439efficiency 10440of the compiler and the compiler options used during generation. 10441 10442 Previous Release: 10443 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 10444 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 10445 Current Release: 10446 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 10447 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 10448 10449 104502) iASL Compiler/Disassembler: 10451 10452Updated the disassembler to automatically insert an EndDependentFn() 10453macro 10454into the ASL stream if this macro is missing in the original AML code, 10455simplifying compilation of the resulting ASL module. 10456 10457Fixed a problem in the disassembler where a disassembled ResourceSource 10458string (within a large resource descriptor) was not surrounded by quotes 10459and 10460not followed by a comma, causing errors when the resulting ASL module was 10461compiled. Also, escape sequences within a ResourceSource string are now 10462handled correctly (especially "\\") 10463 10464---------------------------------------- 1046502 September 2005. Summary of changes for version 20050902: 10466 104671) ACPI CA Core Subsystem: 10468 10469Fixed a problem with the internal Owner ID allocation and deallocation 10470mechanisms for control method execution and recursive method invocation. 10471This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId" 10472messages seen on some systems. Recursive method invocation depth is 10473currently limited to 255. (Alexey Starikovskiy) 10474 10475Completely eliminated all vestiges of support for the "module-level 10476executable code" until this support is fully implemented and debugged. 10477This 10478should eliminate the NO_RETURN_VALUE exceptions seen during table load on 10479some systems that invoke this support. 10480 10481Fixed a problem within the resource manager code where the transaction 10482flags 10483for a 64-bit address descriptor were handled incorrectly in the type- 10484specific flag byte. 10485 10486Consolidated duplicate code within the address descriptor resource 10487manager 10488code, reducing overall subsystem code size. 10489 10490Fixed a fault when using the AML debugger "disassemble" command to 10491disassemble individual control methods. 10492 10493Removed references to the "release_current" directory within the Unix 10494release package. 10495 10496Code and Data Size: The current and previous core subsystem library sizes 10497are shown below. These are the code and data sizes for the acpica.lib 10498produced by the Microsoft Visual C++ 6.0 compiler. These values do not 10499include any ACPI driver or OSPM code. The debug version of the code 10500includes 10501the debug output trace mechanism and has a much larger code and data 10502size. 10503Note that these values will vary depending on the efficiency of the 10504compiler 10505and the compiler options used during generation. 10506 10507 Previous Release: 10508 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 10509 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 10510 Current Release: 10511 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 10512 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 10513 10514 105152) iASL Compiler/Disassembler: 10516 10517Implemented an error check for illegal duplicate values in the interrupt 10518and 10519dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and 10520Interrupt(). 10521 10522Implemented error checking for the Irq() and IrqNoFlags() macros to 10523detect 10524too many values in the interrupt list (16 max) and invalid values in the 10525list (range 0 - 15) 10526 10527The maximum length string literal within an ASL file is now restricted to 10528200 characters as per the ACPI specification. 10529 10530Fixed a fault when using the -ln option (generate namespace listing). 10531 10532Implemented an error check to determine if a DescriptorName within a 10533resource descriptor has already been used within the current scope. 10534 10535---------------------------------------- 1053615 August 2005. Summary of changes for version 20050815: 10537 105381) ACPI CA Core Subsystem: 10539 10540Implemented a full bytewise compare to determine if a table load request 10541is 10542attempting to load a duplicate table. The compare is performed if the 10543table 10544signatures and table lengths match. This will allow different tables with 10545the same OEM Table ID and revision to be loaded - probably against the 10546ACPI 10547specification, but discovered in the field nonetheless. 10548 10549Added the changes.txt logfile to each of the zipped release packages. 10550 10551Code and Data Size: Current and previous core subsystem library sizes are 10552shown below. These are the code and data sizes for the acpica.lib 10553produced 10554by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10555any ACPI driver or OSPM code. The debug version of the code includes the 10556debug output trace mechanism and has a much larger code and data size. 10557Note 10558that these values will vary depending on the efficiency of the compiler 10559and 10560the compiler options used during generation. 10561 10562 Previous Release: 10563 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 10564 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 10565 Current Release: 10566 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 10567 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 10568 10569 105702) iASL Compiler/Disassembler: 10571 10572Fixed a problem where incorrect AML code could be generated for Package 10573objects if optimization is disabled (via the -oa switch). 10574 10575Fixed a problem with where incorrect AML code is generated for variable- 10576length packages when the package length is not specified and the number 10577of 10578initializer values is greater than 255. 10579 10580 10581---------------------------------------- 1058229 July 2005. Summary of changes for version 20050729: 10583 105841) ACPI CA Core Subsystem: 10585 10586Implemented support to ignore an attempt to install/load a particular 10587ACPI 10588table more than once. Apparently there exists BIOS code that repeatedly 10589attempts to load the same SSDT upon certain events. With assistance from 10590Venkatesh Pallipadi. 10591 10592Restructured the main interface to the AML parser in order to correctly 10593handle all exceptional conditions. This will prevent leakage of the 10594OwnerId 10595resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on 10596some 10597machines. With assistance from Alexey Starikovskiy. 10598 10599Support for "module level code" has been disabled in this version due to 10600a 10601number of issues that have appeared on various machines. The support can 10602be 10603enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem 10604compilation. When the issues are fully resolved, the code will be enabled 10605by 10606default again. 10607 10608Modified the internal functions for debug print support to define the 10609FunctionName parameter as a (const char *) for compatibility with 10610compiler 10611built-in macros such as __FUNCTION__, etc. 10612 10613Linted the entire ACPICA source tree for both 32-bit and 64-bit. 10614 10615Implemented support to display an object count summary for the AML 10616Debugger 10617commands Object and Methods. 10618 10619Code and Data Size: Current and previous core subsystem library sizes are 10620shown below. These are the code and data sizes for the acpica.lib 10621produced 10622by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10623any ACPI driver or OSPM code. The debug version of the code includes the 10624debug output trace mechanism and has a much larger code and data size. 10625Note 10626that these values will vary depending on the efficiency of the compiler 10627and 10628the compiler options used during generation. 10629 10630 Previous Release: 10631 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 10632 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 10633 Current Release: 10634 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 10635 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 10636 10637 106382) iASL Compiler/Disassembler: 10639 10640Fixed a regression that appeared in the 20050708 version of the compiler 10641where an error message was inadvertently emitted for invocations of the 10642_OSI 10643reserved control method. 10644 10645---------------------------------------- 1064608 July 2005. Summary of changes for version 20050708: 10647 106481) ACPI CA Core Subsystem: 10649 10650The use of the CPU stack in the debug version of the subsystem has been 10651considerably reduced. Previously, a debug structure was declared in every 10652function that used the debug macros. This structure has been removed in 10653favor of declaring the individual elements as parameters to the debug 10654functions. This reduces the cumulative stack use during nested execution 10655of 10656ACPI function calls at the cost of a small increase in the code size of 10657the 10658debug version of the subsystem. With assistance from Alexey Starikovskiy 10659and 10660Len Brown. 10661 10662Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent 10663headers to define a macro that will return the current function name at 10664runtime (such as __FUNCTION__ or _func_, etc.) The function name is used 10665by 10666the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the 10667compiler-dependent header, the function name is saved on the CPU stack 10668(one 10669pointer per function.) This mechanism is used because apparently there 10670exists no standard ANSI-C defined macro that that returns the function 10671name. 10672 10673Redesigned and reimplemented the "Owner ID" mechanism used to track 10674namespace objects created/deleted by ACPI tables and control method 10675execution. A bitmap is now used to allocate and free the IDs, thus 10676solving 10677the wraparound problem present in the previous implementation. The size 10678of 10679the namespace node descriptor was reduced by 2 bytes as a result (Alexey 10680Starikovskiy). 10681 10682Removed the UINT32_BIT and UINT16_BIT types that were used for the 10683bitfield 10684flag definitions within the headers for the predefined ACPI tables. These 10685have been replaced by UINT8_BIT in order to increase the code portability 10686of 10687the subsystem. If the use of UINT8 remains a problem, we may be forced to 10688eliminate bitfields entirely because of a lack of portability. 10689 10690Enhanced the performance of the AcpiUtUpdateObjectReference procedure. 10691This 10692is a frequently used function and this improvement increases the 10693performance 10694of the entire subsystem (Alexey Starikovskiy). 10695 10696Fixed several possible memory leaks and the inverse - premature object 10697deletion (Alexey Starikovskiy). 10698 10699Code and Data Size: Current and previous core subsystem library sizes are 10700shown below. These are the code and data sizes for the acpica.lib 10701produced 10702by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10703any ACPI driver or OSPM code. The debug version of the code includes the 10704debug output trace mechanism and has a much larger code and data size. 10705Note 10706that these values will vary depending on the efficiency of the compiler 10707and 10708the compiler options used during generation. 10709 10710 Previous Release: 10711 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 10712 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 10713 Current Release: 10714 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 10715 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 10716 10717---------------------------------------- 1071824 June 2005. Summary of changes for version 20050624: 10719 107201) ACPI CA Core Subsystem: 10721 10722Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for 10723the host-defined cache object. This allows the OSL implementation to 10724define 10725and type this object in any manner desired, simplifying the OSL 10726implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for 10727Linux, and should be defined in the OS-specific header file for other 10728operating systems as required. 10729 10730Changed the interface to AcpiOsAcquireObject to directly return the 10731requested object as the function return (instead of ACPI_STATUS.) This 10732change was made for performance reasons, since this is the purpose of the 10733interface in the first place. AcpiOsAcquireObject is now similar to the 10734AcpiOsAllocate interface. 10735 10736Implemented a new AML debugger command named Businfo. This command 10737displays 10738information about all devices that have an associate _PRT object. The 10739_ADR, 10740_HID, _UID, and _CID are displayed for these devices. 10741 10742Modified the initialization sequence in AcpiInitializeSubsystem to call 10743the 10744OSL interface AcpiOslInitialize first, before any local initialization. 10745This 10746change was required because the global initialization now calls OSL 10747interfaces. 10748 10749Enhanced the Dump command to display the entire contents of Package 10750objects 10751(including all sub-objects and their values.) 10752 10753Restructured the code base to split some files because of size and/or 10754because the code logically belonged in a separate file. New files are 10755listed 10756below. All makefiles and project files included in the ACPI CA release 10757have 10758been updated. 10759 utilities/utcache.c /* Local cache interfaces */ 10760 utilities/utmutex.c /* Local mutex support */ 10761 utilities/utstate.c /* State object support */ 10762 interpreter/parser/psloop.c /* Main AML parse loop */ 10763 10764Code and Data Size: Current and previous core subsystem library sizes are 10765shown below. These are the code and data sizes for the acpica.lib 10766produced 10767by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10768any ACPI driver or OSPM code. The debug version of the code includes the 10769debug output trace mechanism and has a much larger code and data size. 10770Note 10771that these values will vary depending on the efficiency of the compiler 10772and 10773the compiler options used during generation. 10774 10775 Previous Release: 10776 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 10777 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 10778 Current Release: 10779 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 10780 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 10781 10782 107832) iASL Compiler/Disassembler: 10784 10785Fixed a regression introduced in version 20050513 where the use of a 10786Package 10787object within a Case() statement caused a compile time exception. The 10788original behavior has been restored (a Match() operator is emitted.) 10789 10790---------------------------------------- 1079117 June 2005. Summary of changes for version 20050617: 10792 107931) ACPI CA Core Subsystem: 10794 10795Moved the object cache operations into the OS interface layer (OSL) to 10796allow 10797the host OS to handle these operations if desired (for example, the Linux 10798OSL will invoke the slab allocator). This support is optional; the 10799compile 10800time define ACPI_USE_LOCAL_CACHE may be used to utilize the original 10801cache 10802code in the ACPI CA core. The new OSL interfaces are shown below. See 10803utalloc.c for an example implementation, and acpiosxf.h for the exact 10804interface definitions. With assistance from Alexey Starikovskiy. 10805 AcpiOsCreateCache 10806 AcpiOsDeleteCache 10807 AcpiOsPurgeCache 10808 AcpiOsAcquireObject 10809 AcpiOsReleaseObject 10810 10811Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to 10812return 10813and restore a flags parameter. This fits better with many OS lock models. 10814Note: the current execution state (interrupt handler or not) is no longer 10815passed to these interfaces. If necessary, the OSL must determine this 10816state 10817by itself, a simple and fast operation. With assistance from Alexey 10818Starikovskiy. 10819 10820Fixed a problem in the ACPI table handling where a valid XSDT was assumed 10821present if the revision of the RSDP was 2 or greater. According to the 10822ACPI 10823specification, the XSDT is optional in all cases, and the table manager 10824therefore now checks for both an RSDP >=2 and a valid XSDT pointer. 10825Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs 10826contain 10827only the RSDT. 10828 10829Fixed an interpreter problem with the Mid() operator in the case of an 10830input 10831string where the resulting output string is of zero length. It now 10832correctly 10833returns a valid, null terminated string object instead of a string object 10834with a null pointer. 10835 10836Fixed a problem with the control method argument handling to allow a 10837store 10838to an Arg object that already contains an object of type Device. The 10839Device 10840object is now correctly overwritten. Previously, an error was returned. 10841 10842 10843Enhanced the debugger Find command to emit object values in addition to 10844the 10845found object pathnames. The output format is the same as the dump 10846namespace 10847command. 10848 10849Enhanced the debugger Set command. It now has the ability to set the 10850value 10851of any Named integer object in the namespace (Previously, only method 10852locals 10853and args could be set.) 10854 10855Code and Data Size: Current and previous core subsystem library sizes are 10856shown below. These are the code and data sizes for the acpica.lib 10857produced 10858by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10859any ACPI driver or OSPM code. The debug version of the code includes the 10860debug output trace mechanism and has a much larger code and data size. 10861Note 10862that these values will vary depending on the efficiency of the compiler 10863and 10864the compiler options used during generation. 10865 10866 Previous Release: 10867 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 10868 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 10869 Current Release: 10870 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 10871 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 10872 10873 108742) iASL Compiler/Disassembler: 10875 10876Fixed a regression in the disassembler where if/else/while constructs 10877were 10878output incorrectly. This problem was introduced in the previous release 10879(20050526). This problem also affected the single-step disassembly in the 10880debugger. 10881 10882Fixed a problem where compiling the reserved _OSI method would randomly 10883(but 10884rarely) produce compile errors. 10885 10886Enhanced the disassembler to emit compilable code in the face of 10887incorrect 10888AML resource descriptors. If the optional ResourceSourceIndex is present, 10889but the ResourceSource is not, do not emit the ResourceSourceIndex in the 10890disassembly. Otherwise, the resulting code cannot be compiled without 10891errors. 10892 10893---------------------------------------- 1089426 May 2005. Summary of changes for version 20050526: 10895 108961) ACPI CA Core Subsystem: 10897 10898Implemented support to execute Type 1 and Type 2 AML opcodes appearing at 10899the module level (not within a control method.) These opcodes are 10900executed 10901exactly once at the time the table is loaded. This type of code was legal 10902up 10903until the release of ACPI 2.0B (2002) and is now supported within ACPI CA 10904in 10905order to provide backwards compatibility with earlier BIOS 10906implementations. 10907This eliminates the "Encountered executable code at module level" warning 10908that was previously generated upon detection of such code. 10909 10910Fixed a problem in the interpreter where an AE_NOT_FOUND exception could 10911inadvertently be generated during the lookup of namespace objects in the 10912second pass parse of ACPI tables and control methods. It appears that 10913this 10914problem could occur during the resolution of forward references to 10915namespace 10916objects. 10917 10918Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function, 10919corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This 10920allows the deadlock detection debug code to be compiled out in the normal 10921case, improving mutex performance (and overall subsystem performance) 10922considerably. 10923 10924Implemented a handful of miscellaneous fixes for possible memory leaks on 10925error conditions and error handling control paths. These fixes were 10926suggested by FreeBSD and the Coverity Prevent source code analysis tool. 10927 10928Added a check for a null RSDT pointer in AcpiGetFirmwareTable 10929(tbxfroot.c) 10930to prevent a fault in this error case. 10931 10932Code and Data Size: Current and previous core subsystem library sizes are 10933shown below. These are the code and data sizes for the acpica.lib 10934produced 10935by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10936any ACPI driver or OSPM code. The debug version of the code includes the 10937debug output trace mechanism and has a much larger code and data size. 10938Note 10939that these values will vary depending on the efficiency of the compiler 10940and 10941the compiler options used during generation. 10942 10943 Previous Release: 10944 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 10945 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 10946 Current Release: 10947 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 10948 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 10949 10950 109512) iASL Compiler/Disassembler: 10952 10953Implemented support to allow Type 1 and Type 2 ASL operators to appear at 10954the module level (not within a control method.) These operators will be 10955executed once at the time the table is loaded. This type of code was 10956legal 10957up until the release of ACPI 2.0B (2002) and is now supported by the iASL 10958compiler in order to provide backwards compatibility with earlier BIOS 10959ASL 10960code. 10961 10962The ACPI integer width (specified via the table revision ID or the -r 10963override, 32 or 64 bits) is now used internally during compile-time 10964constant 10965folding to ensure that constants are truncated to 32 bits if necessary. 10966Previously, the revision ID value was only emitted in the AML table 10967header. 10968 10969An error message is now generated for the Mutex and Method operators if 10970the 10971SyncLevel parameter is outside the legal range of 0 through 15. 10972 10973Fixed a problem with the Method operator ParameterTypes list handling 10974(ACPI 109753.0). Previously, more than 2 types or 2 arguments generated a syntax 10976error. 10977The actual underlying implementation of method argument typechecking is 10978still under development, however. 10979 10980---------------------------------------- 1098113 May 2005. Summary of changes for version 20050513: 10982 109831) ACPI CA Core Subsystem: 10984 10985Implemented support for PCI Express root bridges -- added support for 10986device 10987PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup. 10988 10989The interpreter now automatically truncates incoming 64-bit constants to 1099032 10991bits if currently executing out of a 32-bit ACPI table (Revision < 2). 10992This 10993also affects the iASL compiler constant folding. (Note: as per below, the 10994iASL compiler no longer allows 64-bit constants within 32-bit tables.) 10995 10996Fixed a problem where string and buffer objects with "static" pointers 10997(pointers to initialization data within an ACPI table) were not handled 10998consistently. The internal object copy operation now always copies the 10999data 11000to a newly allocated buffer, regardless of whether the source object is 11001static or not. 11002 11003Fixed a problem with the FromBCD operator where an implicit result 11004conversion was improperly performed while storing the result to the 11005target 11006operand. Since this is an "explicit conversion" operator, the implicit 11007conversion should never be performed on the output. 11008 11009Fixed a problem with the CopyObject operator where a copy to an existing 11010named object did not always completely overwrite the existing object 11011stored 11012at name. Specifically, a buffer-to-buffer copy did not delete the 11013existing 11014buffer. 11015 11016Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces 11017and 11018structs for consistency. 11019 11020Code and Data Size: Current and previous core subsystem library sizes are 11021shown below. These are the code and data sizes for the acpica.lib 11022produced 11023by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11024any ACPI driver or OSPM code. The debug version of the code includes the 11025debug output trace mechanism and has a much larger code and data size. 11026Note 11027that these values will vary depending on the efficiency of the compiler 11028and 11029the compiler options used during generation. 11030 11031 Previous Release: 11032 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 11033 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 11034 Current Release: (Same sizes) 11035 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 11036 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 11037 11038 110392) iASL Compiler/Disassembler: 11040 11041The compiler now emits a warning if an attempt is made to generate a 64- 11042bit 11043integer constant from within a 32-bit ACPI table (Revision < 2). The 11044integer 11045is truncated to 32 bits. 11046 11047Fixed a problem with large package objects: if the static length of the 11048package is greater than 255, the "variable length package" opcode is 11049emitted. Previously, this caused an error. This requires an update to the 11050ACPI spec, since it currently (incorrectly) states that packages larger 11051than 11052255 elements are not allowed. 11053 11054The disassembler now correctly handles variable length packages and 11055packages 11056larger than 255 elements. 11057 11058---------------------------------------- 1105908 April 2005. Summary of changes for version 20050408: 11060 110611) ACPI CA Core Subsystem: 11062 11063Fixed three cases in the interpreter where an "index" argument to an ASL 11064function was still (internally) 32 bits instead of the required 64 bits. 11065This was the Index argument to the Index, Mid, and Match operators. 11066 11067The "strupr" function is now permanently local (AcpiUtStrupr), since this 11068is 11069not a POSIX-defined function and not present in most kernel-level C 11070libraries. All references to the C library strupr function have been 11071removed 11072from the headers. 11073 11074Completed the deployment of static functions/prototypes. All prototypes 11075with 11076the static attribute have been moved from the headers to the owning C 11077file. 11078 11079Implemented an extract option (-e) for the AcpiBin utility (AML binary 11080utility). This option allows the utility to extract individual ACPI 11081tables 11082from the output of AcpiDmp. It provides the same functionality of the 11083acpixtract.pl perl script without the worry of setting the correct perl 11084options. AcpiBin runs on Windows and has not yet been generated/validated 11085in 11086the Linux/Unix environment (but should be soon). 11087 11088Updated and fixed the table dump option for AcpiBin (-d). This option 11089converts a single ACPI table to a hex/ascii file, similar to the output 11090of 11091AcpiDmp. 11092 11093Code and Data Size: Current and previous core subsystem library sizes are 11094shown below. These are the code and data sizes for the acpica.lib 11095produced 11096by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11097any ACPI driver or OSPM code. The debug version of the code includes the 11098debug output trace mechanism and has a much larger code and data size. 11099Note 11100that these values will vary depending on the efficiency of the compiler 11101and 11102the compiler options used during generation. 11103 11104 Previous Release: 11105 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 11106 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 11107 Current Release: 11108 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 11109 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 11110 11111 111122) iASL Compiler/Disassembler: 11113 11114Disassembler fix: Added a check to ensure that the table length found in 11115the 11116ACPI table header within the input file is not longer than the actual 11117input 11118file size. This indicates some kind of file or table corruption. 11119 11120---------------------------------------- 1112129 March 2005. Summary of changes for version 20050329: 11122 111231) ACPI CA Core Subsystem: 11124 11125An error is now generated if an attempt is made to create a Buffer Field 11126of 11127length zero (A CreateField with a length operand of zero.) 11128 11129The interpreter now issues a warning whenever executable code at the 11130module 11131level is detected during ACPI table load. This will give some idea of the 11132prevalence of this type of code. 11133 11134Implemented support for references to named objects (other than control 11135methods) within package objects. 11136 11137Enhanced package object output for the debug object. Package objects are 11138now 11139completely dumped, showing all elements. 11140 11141Enhanced miscellaneous object output for the debug object. Any object can 11142now be written to the debug object (for example, a device object can be 11143written, and the type of the object will be displayed.) 11144 11145The "static" qualifier has been added to all local functions across both 11146the 11147core subsystem and the iASL compiler. 11148 11149The number of "long" lines (> 80 chars) within the source has been 11150significantly reduced, by about 1/3. 11151 11152Cleaned up all header files to ensure that all CA/iASL functions are 11153prototyped (even static functions) and the formatting is consistent. 11154 11155Two new header files have been added, acopcode.h and acnames.h. 11156 11157Removed several obsolete functions that were no longer used. 11158 11159Code and Data Size: Current and previous core subsystem library sizes are 11160shown below. These are the code and data sizes for the acpica.lib 11161produced 11162by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11163any ACPI driver or OSPM code. The debug version of the code includes the 11164debug output trace mechanism and has a much larger code and data size. 11165Note 11166that these values will vary depending on the efficiency of the compiler 11167and 11168the compiler options used during generation. 11169 11170 Previous Release: 11171 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 11172 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 11173 Current Release: 11174 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 11175 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 11176 11177 11178 111792) iASL Compiler/Disassembler: 11180 11181Fixed a problem with the resource descriptor generation/support. For the 11182ResourceSourceIndex and the ResourceSource fields, both must be present, 11183or 11184both must be not present - can't have one without the other. 11185 11186The compiler now returns non-zero from the main procedure if any errors 11187have 11188occurred during the compilation. 11189 11190 11191---------------------------------------- 1119209 March 2005. Summary of changes for version 20050309: 11193 111941) ACPI CA Core Subsystem: 11195 11196The string-to-buffer implicit conversion code has been modified again 11197after 11198a change to the ACPI specification. In order to match the behavior of 11199the 11200other major ACPI implementation, the target buffer is no longer truncated 11201if 11202the source string is smaller than an existing target buffer. This change 11203requires an update to the ACPI spec, and should eliminate the recent 11204AE_AML_BUFFER_LIMIT issues. 11205 11206The "implicit return" support was rewritten to a new algorithm that 11207solves 11208the general case. Rather than attempt to determine when a method is about 11209to 11210exit, the result of every ASL operator is saved momentarily until the 11211very 11212next ASL operator is executed. Therefore, no matter how the method exits, 11213there will always be a saved implicit return value. This feature is only 11214enabled with the AcpiGbl_EnableInterpreterSlack flag, and should 11215eliminate 11216AE_AML_NO_RETURN_VALUE errors when enabled. 11217 11218Implemented implicit conversion support for the predicate (operand) of 11219the 11220If, Else, and While operators. String and Buffer arguments are 11221automatically 11222converted to Integers. 11223 11224Changed the string-to-integer conversion behavior to match the new ACPI 11225errata: "If no integer object exists, a new integer is created. The ASCII 11226string is interpreted as a hexadecimal constant. Each string character is 11227interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting 11228with the first character as the most significant digit, and ending with 11229the 11230first non-hexadecimal character or end-of-string." This means that the 11231first 11232non-hex character terminates the conversion and this is the code that was 11233changed. 11234 11235Fixed a problem where the ObjectType operator would fail (fault) when 11236used 11237on an Index of a Package which pointed to a null package element. The 11238operator now properly returns zero (Uninitialized) in this case. 11239 11240Fixed a problem where the While operator used excessive memory by not 11241properly popping the result stack during execution. There was no memory 11242leak 11243after execution, however. (Code provided by Valery Podrezov.) 11244 11245Fixed a problem where references to control methods within Package 11246objects 11247caused the method to be invoked, instead of producing a reference object 11248pointing to the method. 11249 11250Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree) 11251to 11252improve performance and reduce code size. (Code provided by Alexey 11253Starikovskiy.) 11254 11255Code and Data Size: Current and previous core subsystem library sizes are 11256shown below. These are the code and data sizes for the acpica.lib 11257produced 11258by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11259any ACPI driver or OSPM code. The debug version of the code includes the 11260debug output trace mechanism and has a much larger code and data size. 11261Note 11262that these values will vary depending on the efficiency of the compiler 11263and 11264the compiler options used during generation. 11265 11266 Previous Release: 11267 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 11268 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 11269 Current Release: 11270 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 11271 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 11272 11273 112742) iASL Compiler/Disassembler: 11275 11276Fixed a problem with the Return operator with no arguments. Since the AML 11277grammar for the byte encoding requires an operand for the Return opcode, 11278the 11279compiler now emits a Return(Zero) for this case. An ACPI specification 11280update has been written for this case. 11281 11282For tables other than the DSDT, namepath optimization is automatically 11283disabled. This is because SSDTs can be loaded anywhere in the namespace, 11284the 11285compiler has no knowledge of where, and thus cannot optimize namepaths. 11286 11287Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was 11288inadvertently omitted from the ACPI specification, and will require an 11289update to the spec. 11290 11291The source file scan for ASCII characters is now optional (-a). This 11292change 11293was made because some vendors place non-ascii characters within comments. 11294However, the scan is simply a brute-force byte compare to ensure all 11295characters in the file are in the range 0x00 to 0x7F. 11296 11297Fixed a problem with the CondRefOf operator where the compiler was 11298inappropriately checking for the existence of the target. Since the point 11299of 11300the operator is to check for the existence of the target at run-time, the 11301compiler no longer checks for the target existence. 11302 11303Fixed a problem where errors generated from the internal AML interpreter 11304during constant folding were not handled properly, causing a fault. 11305 11306Fixed a problem with overly aggressive range checking for the Stall 11307operator. The valid range (max 255) is now only checked if the operand is 11308of 11309type Integer. All other operand types cannot be statically checked. 11310 11311Fixed a problem where control method references within the RefOf, 11312DeRefOf, 11313and ObjectType operators were not treated properly. They are now treated 11314as 11315actual references, not method invocations. 11316 11317Fixed and enhanced the "list namespace" option (-ln). This option was 11318broken 11319a number of releases ago. 11320 11321Improved error handling for the Field, IndexField, and BankField 11322operators. 11323The compiler now cleanly reports and recovers from errors in the field 11324component (FieldUnit) list. 11325 11326Fixed a disassembler problem where the optional ResourceDescriptor fields 11327TRS and TTP were not always handled correctly. 11328 11329Disassembler - Comments in output now use "//" instead of "/*" 11330 11331---------------------------------------- 1133228 February 2005. Summary of changes for version 20050228: 11333 113341) ACPI CA Core Subsystem: 11335 11336Fixed a problem where the result of an Index() operator (an object 11337reference) must increment the reference count on the target object for 11338the 11339life of the object reference. 11340 11341Implemented AML Interpreter and Debugger support for the new ACPI 3.0 11342Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and 11343WordSpace 11344resource descriptors. 11345 11346Implemented support in the _OSI method for the ACPI 3.0 "Extended Address 11347Space Descriptor" string, indicating interpreter support for the 11348descriptors 11349above. 11350 11351Implemented header support for the new ACPI 3.0 FADT flag bits. 11352 11353Implemented header support for the new ACPI 3.0 PCI Express bits for the 11354PM1 11355status/enable registers. 11356 11357Updated header support for the MADT processor local Apic struct and MADT 11358platform interrupt source struct for new ACPI 3.0 fields. 11359 11360Implemented header support for the SRAT and SLIT ACPI tables. 11361 11362Implemented the -s switch in AcpiExec to enable the "InterpreterSlack" 11363flag 11364at runtime. 11365 11366Code and Data Size: Current and previous core subsystem library sizes are 11367shown below. These are the code and data sizes for the acpica.lib 11368produced 11369by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11370any ACPI driver or OSPM code. The debug version of the code includes the 11371debug output trace mechanism and has a much larger code and data size. 11372Note 11373that these values will vary depending on the efficiency of the compiler 11374and 11375the compiler options used during generation. 11376 11377 Previous Release: 11378 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 11379 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 11380 Current Release: 11381 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 11382 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 11383 11384 113852) iASL Compiler/Disassembler: 11386 11387Fixed a problem with the internal 64-bit String-to-integer conversion 11388with 11389strings less than two characters long. 11390 11391Fixed a problem with constant folding where the result of the Index() 11392operator can not be considered a constant. This means that Index() cannot 11393be 11394a type3 opcode and this will require an update to the ACPI specification. 11395 11396Disassembler: Implemented support for the TTP, MTP, and TRS resource 11397descriptor fields. These fields were inadvertently ignored and not output 11398in 11399the disassembly of the resource descriptor. 11400 11401 11402 ---------------------------------------- 1140311 February 2005. Summary of changes for version 20050211: 11404 114051) ACPI CA Core Subsystem: 11406 11407Implemented ACPI 3.0 support for implicit conversion within the Match() 11408operator. MatchObjects can now be of type integer, buffer, or string 11409instead 11410of just type integer. Package elements are implicitly converted to the 11411type 11412of the MatchObject. This change aligns the behavior of Match() with the 11413behavior of the other logical operators (LLess(), etc.) It also requires 11414an 11415errata change to the ACPI specification as this support was intended for 11416ACPI 3.0, but was inadvertently omitted. 11417 11418Fixed a problem with the internal implicit "to buffer" conversion. 11419Strings 11420that are converted to buffers will cause buffer truncation if the string 11421is 11422smaller than the target buffer. Integers that are converted to buffers 11423will 11424not cause buffer truncation, only zero extension (both as per the ACPI 11425spec.) The problem was introduced when code was added to truncate the 11426buffer, but this should not be performed in all cases, only the string 11427case. 11428 11429Fixed a problem with the Buffer and Package operators where the 11430interpreter 11431would get confused if two such operators were used as operands to an ASL 11432operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result 11433stack was not being popped after the execution of these operators, 11434resulting 11435in an AE_NO_RETURN_VALUE exception. 11436 11437Fixed a problem with constructs of the form Store(Index(...),...). The 11438reference object returned from Index was inadvertently resolved to an 11439actual 11440value. This problem was introduced in version 20050114 when the behavior 11441of 11442Store() was modified to restrict the object types that can be used as the 11443source operand (to match the ACPI specification.) 11444 11445Reduced excessive stack use within the AcpiGetObjectInfo procedure. 11446 11447Added a fix to aclinux.h to allow generation of AcpiExec on Linux. 11448 11449Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct. 11450 11451Code and Data Size: Current and previous core subsystem library sizes are 11452shown below. These are the code and data sizes for the acpica.lib 11453produced 11454by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11455any ACPI driver or OSPM code. The debug version of the code includes the 11456debug output trace mechanism and has a much larger code and data size. 11457Note 11458that these values will vary depending on the efficiency of the compiler 11459and 11460the compiler options used during generation. 11461 11462 Previous Release: 11463 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 11464 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 11465 Current Release: 11466 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 11467 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 11468 11469 114702) iASL Compiler/Disassembler: 11471 11472Fixed a code generation problem in the constant folding optimization code 11473where incorrect code was generated if a constant was reduced to a buffer 11474object (i.e., a reduced type 5 opcode.) 11475 11476Fixed a typechecking problem for the ToBuffer operator. Caused by an 11477incorrect return type in the internal opcode information table. 11478 11479---------------------------------------- 1148025 January 2005. Summary of changes for version 20050125: 11481 114821) ACPI CA Core Subsystem: 11483 11484Fixed a recently introduced problem with the Global Lock where the 11485underlying semaphore was not created. This problem was introduced in 11486version 20050114, and caused an AE_AML_NO_OPERAND exception during an 11487Acquire() operation on _GL. 11488 11489The local object cache is now optional, and is disabled by default. Both 11490AcpiExec and the iASL compiler enable the cache because they run in user 11491mode and this enhances their performance. #define 11492ACPI_ENABLE_OBJECT_CACHE 11493to enable the local cache. 11494 11495Fixed an issue in the internal function AcpiUtEvaluateObject concerning 11496the 11497optional "implicit return" support where an error was returned if no 11498return 11499object was expected, but one was implicitly returned. AE_OK is now 11500returned 11501in this case and the implicitly returned object is deleted. 11502AcpiUtEvaluateObject is only occasionally used, and only to execute 11503reserved 11504methods such as _STA and _INI where the return type is known up front. 11505 11506Fixed a few issues with the internal convert-to-integer code. It now 11507returns 11508an error if an attempt is made to convert a null string, a string of only 11509blanks/tabs, or a zero-length buffer. This affects both implicit 11510conversion 11511and explicit conversion via the ToInteger() operator. 11512 11513The internal debug code in AcpiUtAcquireMutex has been commented out. It 11514is 11515not needed for normal operation and should increase the performance of 11516the 11517entire subsystem. The code remains in case it is needed for debug 11518purposes 11519again. 11520 11521The AcpiExec source and makefile are included in the Unix/Linux package 11522for 11523the first time. 11524 11525Code and Data Size: Current and previous core subsystem library sizes are 11526shown below. These are the code and data sizes for the acpica.lib 11527produced 11528by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11529any ACPI driver or OSPM code. The debug version of the code includes the 11530debug output trace mechanism and has a much larger code and data size. 11531Note 11532that these values will vary depending on the efficiency of the compiler 11533and 11534the compiler options used during generation. 11535 11536 Previous Release: 11537 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 11538 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 11539 Current Release: 11540 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 11541 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 11542 115432) iASL Compiler/Disassembler: 11544 11545Switch/Case support: A warning is now issued if the type of the Switch 11546value 11547cannot be determined at compile time. For example, Switch(Arg0) will 11548generate the warning, and the type is assumed to be an integer. As per 11549the 11550ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate 11551the 11552warning. 11553 11554Switch/Case support: Implemented support for buffer and string objects as 11555the switch value. This is an ACPI 3.0 feature, now that LEqual supports 11556buffers and strings. 11557 11558Switch/Case support: The emitted code for the LEqual() comparisons now 11559uses 11560the switch value as the first operand, not the second. The case value is 11561now 11562the second operand, and this allows the case value to be implicitly 11563converted to the type of the switch value, not the other way around. 11564 11565Switch/Case support: Temporary variables are now emitted immediately 11566within 11567the control method, not at the global level. This means that there are 11568now 1156936 temps available per-method, not 36 temps per-module as was the case 11570with 11571the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.) 11572 11573---------------------------------------- 1157414 January 2005. Summary of changes for version 20050114: 11575 11576Added 2005 copyright to all module headers. This affects every module in 11577the core subsystem, iASL compiler, and the utilities. 11578 115791) ACPI CA Core Subsystem: 11580 11581Fixed an issue with the String-to-Buffer conversion code where the string 11582null terminator was not included in the buffer after conversion, but 11583there 11584is existing ASL that assumes the string null terminator is included. This 11585is 11586the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was 11587introduced in the previous version when the code was updated to correctly 11588set the converted buffer size as per the ACPI specification. The ACPI 11589spec 11590is ambiguous and will be updated to specify that the null terminator must 11591be 11592included in the converted buffer. This also affects the ToBuffer() ASL 11593operator. 11594 11595Fixed a problem with the Mid() ASL/AML operator where it did not work 11596correctly on Buffer objects. Newly created sub-buffers were not being 11597marked 11598as initialized. 11599 11600 11601Fixed a problem in AcpiTbFindTable where incorrect string compares were 11602performed on the OemId and OemTableId table header fields. These fields 11603are 11604not null terminated, so strncmp is now used instead of strcmp. 11605 11606Implemented a restriction on the Store() ASL/AML operator to align the 11607behavior with the ACPI specification. Previously, any object could be 11608used 11609as the source operand. Now, the only objects that may be used are 11610Integers, 11611Buffers, Strings, Packages, Object References, and DDB Handles. If 11612necessary, the original behavior can be restored by enabling the 11613EnableInterpreterSlack flag. 11614 11615Enhanced the optional "implicit return" support to allow an implicit 11616return 11617value from methods that are invoked externally via the AcpiEvaluateObject 11618interface. This enables implicit returns from the _STA and _INI methods, 11619for example. 11620 11621Changed the Revision() ASL/AML operator to return the current version of 11622the 11623AML interpreter, in the YYYYMMDD format. Previously, it incorrectly 11624returned 11625the supported ACPI version (This is the function of the _REV method). 11626 11627Updated the _REV predefined method to return the currently supported 11628version 11629of ACPI, now 3. 11630 11631Implemented batch mode option for the AcpiExec utility (-b). 11632 11633Code and Data Size: Current and previous core subsystem library sizes are 11634shown below. These are the code and data sizes for the acpica.lib 11635produced 11636by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11637any ACPI driver or OSPM code. The debug version of the code includes the 11638debug output trace mechanism and has a much larger code and data size. 11639Note 11640that these values will vary depending on the efficiency of the compiler 11641and 11642the compiler options used during generation. 11643 11644 Previous Release: 11645 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 11646 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 11647 Current Release: 11648 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 11649 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 11650 11651---------------------------------------- 1165210 December 2004. Summary of changes for version 20041210: 11653 11654ACPI 3.0 support is nearing completion in both the iASL compiler and the 11655ACPI CA core subsystem. 11656 116571) ACPI CA Core Subsystem: 11658 11659Fixed a problem in the ToDecimalString operator where the resulting 11660string 11661length was incorrectly calculated. The length is now calculated exactly, 11662eliminating incorrect AE_STRING_LIMIT exceptions. 11663 11664Fixed a problem in the ToHexString operator to allow a maximum 200 11665character 11666string to be produced. 11667 11668Fixed a problem in the internal string-to-buffer and buffer-to-buffer 11669copy 11670routine where the length of the resulting buffer was not truncated to the 11671new size (if the target buffer already existed). 11672 11673Code and Data Size: Current and previous core subsystem library sizes are 11674shown below. These are the code and data sizes for the acpica.lib 11675produced 11676by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11677any ACPI driver or OSPM code. The debug version of the code includes the 11678debug output trace mechanism and has a much larger code and data size. 11679Note 11680that these values will vary depending on the efficiency of the compiler 11681and 11682the compiler options used during generation. 11683 11684 Previous Release: 11685 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 11686 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 11687 Current Release: 11688 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 11689 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 11690 11691 116922) iASL Compiler/Disassembler: 11693 11694Implemented the new ACPI 3.0 resource template macros - DWordSpace, 11695ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace. 11696Includes support in the disassembler. 11697 11698Implemented support for the new (ACPI 3.0) parameter to the Register 11699macro, 11700AccessSize. 11701 11702Fixed a problem where the _HE resource name for the Interrupt macro was 11703referencing bit 0 instead of bit 1. 11704 11705Implemented check for maximum 255 interrupts in the Interrupt macro. 11706 11707Fixed a problem with the predefined resource descriptor names where 11708incorrect AML code was generated if the offset within the resource buffer 11709was 0 or 1. The optimizer shortened the AML code to a single byte opcode 11710but did not update the surrounding package lengths. 11711 11712Changes to the Dma macro: All channels within the channel list must be 11713in 11714the range 0-7. Maximum 8 channels can be specified. BusMaster operand is 11715optional (default is BusMaster). 11716 11717Implemented check for maximum 7 data bytes for the VendorShort macro. 11718 11719The ReadWrite parameter is now optional for the Memory32 and similar 11720macros. 11721 11722---------------------------------------- 1172303 December 2004. Summary of changes for version 20041203: 11724 117251) ACPI CA Core Subsystem: 11726 11727The low-level field insertion/extraction code (exfldio) has been 11728completely 11729rewritten to eliminate unnecessary complexity, bugs, and boundary 11730conditions. 11731 11732Fixed a problem in the ToInteger, ToBuffer, ToHexString, and 11733ToDecimalString 11734operators where the input operand could be inadvertently deleted if no 11735conversion was necessary (e.g., if the input to ToInteger was an Integer 11736object.) 11737 11738Fixed a problem with the ToDecimalString and ToHexString where an 11739incorrect 11740exception code was returned if the resulting string would be > 200 chars. 11741AE_STRING_LIMIT is now returned. 11742 11743Fixed a problem with the Concatenate operator where AE_OK was always 11744returned, even if the operation failed. 11745 11746Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128 11747semaphores to be allocated. 11748 11749Code and Data Size: Current and previous core subsystem library sizes are 11750shown below. These are the code and data sizes for the acpica.lib 11751produced 11752by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11753any ACPI driver or OSPM code. The debug version of the code includes the 11754debug output trace mechanism and has a much larger code and data size. 11755Note 11756that these values will vary depending on the efficiency of the compiler 11757and 11758the compiler options used during generation. 11759 11760 Previous Release: 11761 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 11762 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 11763 Current Release: 11764 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 11765 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 11766 11767 117682) iASL Compiler/Disassembler: 11769 11770Fixed typechecking for the ObjectType and SizeOf operators. Problem was 11771recently introduced in 20041119. 11772 11773Fixed a problem with the ToUUID macro where the upper nybble of each 11774buffer 11775byte was inadvertently set to zero. 11776 11777---------------------------------------- 1177819 November 2004. Summary of changes for version 20041119: 11779 117801) ACPI CA Core Subsystem: 11781 11782Fixed a problem in the internal ConvertToInteger routine where new 11783integers 11784were not truncated to 32 bits for 32-bit ACPI tables. This routine 11785converts 11786buffers and strings to integers. 11787 11788Implemented support to store a value to an Index() on a String object. 11789This 11790is an ACPI 2.0 feature that had not yet been implemented. 11791 11792Implemented new behavior for storing objects to individual package 11793elements 11794(via the Index() operator). The previous behavior was to invoke the 11795implicit 11796conversion rules if an object was already present at the index. The new 11797behavior is to simply delete any existing object and directly store the 11798new 11799object. Although the ACPI specification seems unclear on this subject, 11800other 11801ACPI implementations behave in this manner. (This is the root of the 11802AE_BAD_HEX_CONSTANT issue.) 11803 11804Modified the RSDP memory scan mechanism to support the extended checksum 11805for 11806ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid 11807RSDP signature is found with a valid checksum. 11808 11809Code and Data Size: Current and previous core subsystem library sizes are 11810shown below. These are the code and data sizes for the acpica.lib 11811produced 11812by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11813any ACPI driver or OSPM code. The debug version of the code includes the 11814debug output trace mechanism and has a much larger code and data size. 11815Note 11816that these values will vary depending on the efficiency of the compiler 11817and 11818the compiler options used during generation. 11819 11820 Previous Release: 11821 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 11822 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 11823 Current Release: 11824 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 11825 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 11826 11827 118282) iASL Compiler/Disassembler: 11829 11830Fixed a missing semicolon in the aslcompiler.y file. 11831 11832---------------------------------------- 1183305 November 2004. Summary of changes for version 20041105: 11834 118351) ACPI CA Core Subsystem: 11836 11837Implemented support for FADT revision 2. This was an interim table 11838(between 11839ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register. 11840 11841Implemented optional support to allow uninitialized LocalX and ArgX 11842variables in a control method. The variables are initialized to an 11843Integer 11844object with a value of zero. This support is enabled by setting the 11845AcpiGbl_EnableInterpreterSlack flag to TRUE. 11846 11847Implemented support for Integer objects for the SizeOf operator. Either 118484 11849or 8 is returned, depending on the current integer size (32-bit or 64- 11850bit, 11851depending on the parent table revision). 11852 11853Fixed a problem in the implementation of the SizeOf and ObjectType 11854operators 11855where the operand was resolved to a value too early, causing incorrect 11856return values for some objects. 11857 11858Fixed some possible memory leaks during exceptional conditions. 11859 11860Code and Data Size: Current and previous core subsystem library sizes are 11861shown below. These are the code and data sizes for the acpica.lib 11862produced 11863by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11864any ACPI driver or OSPM code. The debug version of the code includes the 11865debug output trace mechanism and has a much larger code and data size. 11866Note 11867that these values will vary depending on the efficiency of the compiler 11868and 11869the compiler options used during generation. 11870 11871 Previous Release: 11872 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 11873 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 11874 Current Release: 11875 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 11876 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 11877 11878 118792) iASL Compiler/Disassembler: 11880 11881Implemented support for all ACPI 3.0 reserved names and methods. 11882 11883Implemented all ACPI 3.0 grammar elements in the front-end, including 11884support for semicolons. 11885 11886Implemented the ACPI 3.0 Function() and ToUUID() macros 11887 11888Fixed a problem in the disassembler where a Scope() operator would not be 11889emitted properly if the target of the scope was in another table. 11890 11891---------------------------------------- 1189215 October 2004. Summary of changes for version 20041015: 11893 11894Note: ACPI CA is currently undergoing an in-depth and complete formal 11895evaluation to test/verify the following areas. Other suggestions are 11896welcome. This will result in an increase in the frequency of releases and 11897the number of bug fixes in the next few months. 11898 - Functional tests for all ASL/AML operators 11899 - All implicit/explicit type conversions 11900 - Bit fields and operation regions 11901 - 64-bit math support and 32-bit-only "truncated" math support 11902 - Exceptional conditions, both compiler and interpreter 11903 - Dynamic object deletion and memory leaks 11904 - ACPI 3.0 support when implemented 11905 - External interfaces to the ACPI subsystem 11906 11907 119081) ACPI CA Core Subsystem: 11909 11910Fixed two alignment issues on 64-bit platforms - within debug statements 11911in 11912AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the 11913Address 11914field within the non-aligned ACPI generic address structure. 11915 11916Fixed a problem in the Increment and Decrement operators where incorrect 11917operand resolution could result in the inadvertent modification of the 11918original integer when the integer is passed into another method as an 11919argument and the arg is then incremented/decremented. 11920 11921Fixed a problem in the FromBCD operator where the upper 32-bits of a 64- 11922bit 11923BCD number were truncated during conversion. 11924 11925Fixed a problem in the ToDecimal operator where the length of the 11926resulting 11927string could be set incorrectly too long if the input operand was a 11928Buffer 11929object. 11930 11931Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte 11932(0) 11933within a buffer would prematurely terminate a compare between buffer 11934objects. 11935 11936Added a check for string overflow (>200 characters as per the ACPI 11937specification) during the Concatenate operator with two string operands. 11938 11939Code and Data Size: Current and previous core subsystem library sizes are 11940shown below. These are the code and data sizes for the acpica.lib 11941produced 11942by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11943any ACPI driver or OSPM code. The debug version of the code includes the 11944debug output trace mechanism and has a much larger code and data size. 11945Note 11946that these values will vary depending on the efficiency of the compiler 11947and 11948the compiler options used during generation. 11949 11950 Previous Release: 11951 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 11952 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 11953 Current Release: 11954 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 11955 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 11956 11957 11958 119592) iASL Compiler/Disassembler: 11960 11961Allow the use of the ObjectType operator on uninitialized Locals and Args 11962(returns 0 as per the ACPI specification). 11963 11964Fixed a problem where the compiler would fault if there was a syntax 11965error 11966in the FieldName of all of the various CreateXXXField operators. 11967 11968Disallow the use of lower case letters within the EISAID macro, as per 11969the 11970ACPI specification. All EISAID strings must be of the form "UUUNNNN" 11971Where 11972U is an uppercase letter and N is a hex digit. 11973 11974 11975---------------------------------------- 1197606 October 2004. Summary of changes for version 20041006: 11977 119781) ACPI CA Core Subsystem: 11979 11980Implemented support for the ACPI 3.0 Timer operator. This ASL function 11981implements a 64-bit timer with 100 nanosecond granularity. 11982 11983Defined a new OSL interface, AcpiOsGetTimer. This interface is used to 11984implement the ACPI 3.0 Timer operator. This allows the host OS to 11985implement 11986the timer with the best clock available. Also, it keeps the core 11987subsystem 11988out of the clock handling business, since the host OS (usually) performs 11989this function. 11990 11991Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write) 11992functions use a 64-bit address which is part of the packed ACPI Generic 11993Address Structure. Since the structure is non-aligned, the alignment 11994macros 11995are now used to extract the address to a local variable before use. 11996 11997Fixed a problem where the ToInteger operator assumed all input strings 11998were 11999hexadecimal. The operator now handles both decimal strings and hex 12000strings 12001(prefixed with "0x"). 12002 12003Fixed a problem where the string length in the string object created as a 12004result of the internal ConvertToString procedure could be incorrect. This 12005potentially affected all implicit conversions and also the 12006ToDecimalString 12007and ToHexString operators. 12008 12009Fixed two problems in the ToString operator. If the length parameter was 12010zero, an incorrect string object was created and the value of the input 12011length parameter was inadvertently changed from zero to Ones. 12012 12013Fixed a problem where the optional ResourceSource string in the 12014ExtendedIRQ 12015resource macro was ignored. 12016 12017Simplified the interfaces to the internal division functions, reducing 12018code 12019size and complexity. 12020 12021Code and Data Size: Current and previous core subsystem library sizes are 12022shown below. These are the code and data sizes for the acpica.lib 12023produced 12024by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12025any ACPI driver or OSPM code. The debug version of the code includes the 12026debug output trace mechanism and has a much larger code and data size. 12027Note 12028that these values will vary depending on the efficiency of the compiler 12029and 12030the compiler options used during generation. 12031 12032 Previous Release: 12033 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 12034 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 12035 Current Release: 12036 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 12037 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 12038 12039 120402) iASL Compiler/Disassembler: 12041 12042Implemented support for the ACPI 3.0 Timer operator. 12043 12044Fixed a problem where the Default() operator was inadvertently ignored in 12045a 12046Switch/Case block. This was a problem in the translation of the Switch 12047statement to If...Else pairs. 12048 12049Added support to allow a standalone Return operator, with no parentheses 12050(or 12051operands). 12052 12053Fixed a problem with code generation for the ElseIf operator where the 12054translated Else...If parse tree was improperly constructed leading to the 12055loss of some code. 12056 12057---------------------------------------- 1205822 September 2004. Summary of changes for version 20040922: 12059 120601) ACPI CA Core Subsystem: 12061 12062Fixed a problem with the implementation of the LNot() operator where 12063"Ones" 12064was not returned for the TRUE case. Changed the code to return Ones 12065instead 12066of (!Arg) which was usually 1. This change affects iASL constant folding 12067for 12068this operator also. 12069 12070Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was 12071not 12072initialized properly -- Now zero the entire buffer in this case where the 12073buffer already exists. 12074 12075Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32 12076Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all 12077related code considerably. This will require changes/updates to all OS 12078interface layers (OSLs.) 12079 12080Implemented a new external interface, AcpiInstallExceptionHandler, to 12081allow 12082a system exception handler to be installed. This handler is invoked upon 12083any 12084run-time exception that occurs during control method execution. 12085 12086Added support for the DSDT in AcpiTbFindTable. This allows the 12087DataTableRegion() operator to access the local copy of the DSDT. 12088 12089Code and Data Size: Current and previous core subsystem library sizes are 12090shown below. These are the code and data sizes for the acpica.lib 12091produced 12092by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12093any ACPI driver or OSPM code. The debug version of the code includes the 12094debug output trace mechanism and has a much larger code and data size. 12095Note 12096that these values will vary depending on the efficiency of the compiler 12097and 12098the compiler options used during generation. 12099 12100 Previous Release: 12101 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 12102 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 12103 Current Release: 12104 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 12105 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 12106 12107 121082) iASL Compiler/Disassembler: 12109 12110Fixed a problem with constant folding and the LNot operator. LNot was 12111returning 1 in the TRUE case, not Ones as per the ACPI specification. 12112This 12113could result in the generation of an incorrect folded/reduced constant. 12114 12115End-Of-File is now allowed within a "//"-style comment. A parse error no 12116longer occurs if such a comment is at the very end of the input ASL 12117source 12118file. 12119 12120Implemented the "-r" option to override the Revision in the table header. 12121The initial use of this option will be to simplify the evaluation of the 12122AML 12123interpreter by allowing a single ASL source module to be compiled for 12124either 1212532-bit or 64-bit integers. 12126 12127 12128---------------------------------------- 1212927 August 2004. Summary of changes for version 20040827: 12130 121311) ACPI CA Core Subsystem: 12132 12133- Implemented support for implicit object conversion in the non-numeric 12134logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual, 12135and 12136LNotEqual.) Any combination of Integers/Strings/Buffers may now be used; 12137the second operand is implicitly converted on the fly to match the type 12138of 12139the first operand. For example: 12140 12141 LEqual (Source1, Source2) 12142 12143Source1 and Source2 must each evaluate to an integer, a string, or a 12144buffer. 12145The data type of Source1 dictates the required type of Source2. Source2 12146is 12147implicitly converted if necessary to match the type of Source1. 12148 12149- Updated and corrected the behavior of the string conversion support. 12150The 12151rules concerning conversion of buffers to strings (according to the ACPI 12152specification) are as follows: 12153 12154ToDecimalString - explicit byte-wise conversion of buffer to string of 12155decimal values (0-255) separated by commas. ToHexString - explicit byte- 12156wise 12157conversion of buffer to string of hex values (0-FF) separated by commas. 12158ToString - explicit byte-wise conversion of buffer to string. Byte-by- 12159byte 12160copy with no transform except NULL terminated. Any other implicit buffer- 12161to- 12162string conversion - byte-wise conversion of buffer to string of hex 12163values 12164(0-FF) separated by spaces. 12165 12166- Fixed typo in definition of AcpiGbl_EnableInterpreterSlack. 12167 12168- Fixed a problem in AcpiNsGetPathnameLength where the returned length 12169was 12170one byte too short in the case of a node in the root scope. This could 12171cause a fault during debug output. 12172 12173- Code and Data Size: Current and previous core subsystem library sizes 12174are 12175shown below. These are the code and data sizes for the acpica.lib 12176produced 12177by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12178any ACPI driver or OSPM code. The debug version of the code includes the 12179debug output trace mechanism and has a much larger code and data size. 12180Note 12181that these values will vary depending on the efficiency of the compiler 12182and 12183the compiler options used during generation. 12184 12185 Previous Release: 12186 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 12187 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 12188 Current Release: 12189 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 12190 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 12191 12192 121932) iASL Compiler/Disassembler: 12194 12195- Fixed a Linux generation error. 12196 12197 12198---------------------------------------- 1219916 August 2004. Summary of changes for version 20040816: 12200 122011) ACPI CA Core Subsystem: 12202 12203Designed and implemented support within the AML interpreter for the so- 12204called "implicit return". This support returns the result of the last 12205ASL 12206operation within a control method, in the absence of an explicit Return() 12207operator. A few machines depend on this behavior, even though it is not 12208explicitly supported by the ASL language. It is optional support that 12209can 12210be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag. 12211 12212Removed support for the PCI_Config address space from the internal low 12213level 12214hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This 12215support was not used internally, and would not work correctly anyway 12216because 12217the PCI bus number and segment number were not supported. There are 12218separate interfaces for PCI configuration space access because of the 12219unique 12220interface. 12221 12222Code and Data Size: Current and previous core subsystem library sizes are 12223shown below. These are the code and data sizes for the acpica.lib 12224produced 12225by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12226any ACPI driver or OSPM code. The debug version of the code includes the 12227debug output trace mechanism and has a much larger code and data size. 12228Note 12229that these values will vary depending on the efficiency of the compiler 12230and 12231the compiler options used during generation. 12232 12233 Previous Release: 12234 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 12235 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 12236 Current Release: 12237 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 12238 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 12239 12240 122412) iASL Compiler/Disassembler: 12242 12243Fixed a problem where constants in ASL expressions at the root level (not 12244within a control method) could be inadvertently truncated during code 12245generation. This problem was introduced in the 20040715 release. 12246 12247 12248---------------------------------------- 1224915 July 2004. Summary of changes for version 20040715: 12250 122511) ACPI CA Core Subsystem: 12252 12253Restructured the internal HW GPE interfaces to pass/track the current 12254state 12255of interrupts (enabled/disabled) in order to avoid possible deadlock and 12256increase flexibility of the interfaces. 12257 12258Implemented a "lexicographical compare" for String and Buffer objects 12259within 12260the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual - 12261- 12262as per further clarification to the ACPI specification. Behavior is 12263similar 12264to C library "strcmp". 12265 12266Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable 12267external function. In the 32-bit non-debug case, the stack use has been 12268reduced from 168 bytes to 32 bytes. 12269 12270Deployed a new run-time configuration flag, 12271AcpiGbl_EnableInterpreterSlack, 12272whose purpose is to allow the AML interpreter to forgive certain bad AML 12273constructs. Default setting is FALSE. 12274 12275Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field 12276IO 12277support code. If enabled, it allows field access to go beyond the end of 12278a 12279region definition if the field is within the region length rounded up to 12280the 12281next access width boundary (a common coding error.) 12282 12283Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to 12284ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also, 12285these 12286symbols are lowercased by the latest version of the AcpiSrc tool. 12287 12288The prototypes for the PCI interfaces in acpiosxf.h have been updated to 12289rename "Register" to simply "Reg" to prevent certain compilers from 12290complaining. 12291 12292Code and Data Size: Current and previous core subsystem library sizes are 12293shown below. These are the code and data sizes for the acpica.lib 12294produced 12295by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12296any ACPI driver or OSPM code. The debug version of the code includes the 12297debug output trace mechanism and has a much larger code and data size. 12298Note 12299that these values will vary depending on the efficiency of the compiler 12300and 12301the compiler options used during generation. 12302 12303 Previous Release: 12304 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 12305 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 12306 Current Release: 12307 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 12308 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 12309 12310 123112) iASL Compiler/Disassembler: 12312 12313Implemented full support for Package objects within the Case() operator. 12314Note: The Break() operator is currently not supported within Case blocks 12315(TermLists) as there is some question about backward compatibility with 12316ACPI 123171.0 interpreters. 12318 12319 12320Fixed a problem where complex terms were not supported properly within 12321the 12322Switch() operator. 12323 12324Eliminated extraneous warning for compiler-emitted reserved names of the 12325form "_T_x". (Used in Switch/Case operators.) 12326 12327Eliminated optimization messages for "_T_x" objects and small constants 12328within the DefinitionBlock operator. 12329 12330 12331---------------------------------------- 1233215 June 2004. Summary of changes for version 20040615: 12333 123341) ACPI CA Core Subsystem: 12335 12336Implemented support for Buffer and String objects (as per ACPI 2.0) for 12337the 12338following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 12339LLessEqual. 12340 12341All directory names in the entire source package are lower case, as they 12342were in earlier releases. 12343 12344Implemented "Disassemble" command in the AML debugger that will 12345disassemble 12346a single control method. 12347 12348Code and Data Size: Current and previous core subsystem library sizes are 12349shown below. These are the code and data sizes for the acpica.lib 12350produced 12351by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12352any ACPI driver or OSPM code. The debug version of the code includes the 12353debug output trace mechanism and has a much larger code and data size. 12354Note 12355that these values will vary depending on the efficiency of the compiler 12356and 12357the compiler options used during generation. 12358 12359 Previous Release: 12360 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 12361 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 12362 12363 Current Release: 12364 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 12365 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 12366 12367 123682) iASL Compiler/Disassembler: 12369 12370Implemented support for Buffer and String objects (as per ACPI 2.0) for 12371the 12372following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 12373LLessEqual. 12374 12375All directory names in the entire source package are lower case, as they 12376were in earlier releases. 12377 12378Fixed a fault when using the -g or -d<nofilename> options if the FADT was 12379not found. 12380 12381Fixed an issue with the Windows version of the compiler where later 12382versions 12383of Windows place the FADT in the registry under the name "FADT" and not 12384"FACP" as earlier versions did. This applies when using the -g or - 12385d<nofilename> options. The compiler now looks for both strings as 12386necessary. 12387 12388Fixed a problem with compiler namepath optimization where a namepath 12389within 12390the Scope() operator could not be optimized if the namepath was a subpath 12391of 12392the current scope path. 12393 12394---------------------------------------- 1239527 May 2004. Summary of changes for version 20040527: 12396 123971) ACPI CA Core Subsystem: 12398 12399Completed a new design and implementation for EBDA (Extended BIOS Data 12400Area) 12401support in the RSDP scan code. The original code improperly scanned for 12402the 12403EBDA by simply scanning from memory location 0 to 0x400. The correct 12404method 12405is to first obtain the EBDA pointer from within the BIOS data area, then 12406scan 1K of memory starting at the EBDA pointer. There appear to be few 12407if 12408any machines that place the RSDP in the EBDA, however. 12409 12410Integrated a fix for a possible fault during evaluation of BufferField 12411arguments. Obsolete code that was causing the problem was removed. 12412 12413Found and fixed a problem in the Field Support Code where data could be 12414corrupted on a bit field read that starts on an aligned boundary but does 12415not end on an aligned boundary. Merged the read/write "datum length" 12416calculation code into a common procedure. 12417 12418Rolled in a couple of changes to the FreeBSD-specific header. 12419 12420 12421Code and Data Size: Current and previous core subsystem library sizes are 12422shown below. These are the code and data sizes for the acpica.lib 12423produced 12424by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12425any ACPI driver or OSPM code. The debug version of the code includes the 12426debug output trace mechanism and has a much larger code and data size. 12427Note 12428that these values will vary depending on the efficiency of the compiler 12429and 12430the compiler options used during generation. 12431 12432 Previous Release: 12433 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 12434 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 12435 Current Release: 12436 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 12437 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 12438 12439 124402) iASL Compiler/Disassembler: 12441 12442Fixed a generation warning produced by some overly-verbose compilers for 12443a 1244464-bit constant. 12445 12446---------------------------------------- 1244714 May 2004. Summary of changes for version 20040514: 12448 124491) ACPI CA Core Subsystem: 12450 12451Fixed a problem where hardware GPE enable bits sometimes not set properly 12452during and after GPE method execution. Result of 04/27 changes. 12453 12454Removed extra "clear all GPEs" when sleeping/waking. 12455 12456Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single 12457AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above 12458to 12459the new AcpiEv* calls as appropriate. 12460 12461ACPI_OS_NAME was removed from the OS-specific headers. The default name 12462is 12463now "Microsoft Windows NT" for maximum compatibility. However this can 12464be 12465changed by modifying the acconfig.h file. 12466 12467Allow a single invocation of AcpiInstallNotifyHandler for a handler that 12468traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag. 12469 12470Run _INI methods on ThermalZone objects. This is against the ACPI 12471specification, but there is apparently ASL code in the field that has 12472these 12473_INI methods, and apparently "other" AML interpreters execute them. 12474 12475Performed a full 16/32/64 bit lint that resulted in some small changes. 12476 12477Added a sleep simulation command to the AML debugger to test sleep code. 12478 12479Code and Data Size: Current and previous core subsystem library sizes are 12480shown below. These are the code and data sizes for the acpica.lib 12481produced 12482by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12483any ACPI driver or OSPM code. The debug version of the code includes the 12484debug output trace mechanism and has a much larger code and data size. 12485Note 12486that these values will vary depending on the efficiency of the compiler 12487and 12488the compiler options used during generation. 12489 12490 Previous Release: 12491 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 12492 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 12493 Current Release: 12494 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 12495 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 12496 12497---------------------------------------- 1249827 April 2004. Summary of changes for version 20040427: 12499 125001) ACPI CA Core Subsystem: 12501 12502Completed a major overhaul of the GPE handling within ACPI CA. There are 12503now three types of GPEs: wake-only, runtime-only, and combination 12504wake/run. 12505The only GPEs allowed to be combination wake/run are for button-style 12506devices such as a control-method power button, control-method sleep 12507button, 12508or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are 12509not 12510referenced by any _PRW methods are marked for "runtime" and hardware 12511enabled. Any GPE that is referenced by a _PRW method is marked for 12512"wake" 12513(and disabled at runtime). However, at sleep time, only those GPEs that 12514have been specifically enabled for wake via the AcpiEnableGpe interface 12515will 12516actually be hardware enabled. 12517 12518A new external interface has been added, AcpiSetGpeType(), that is meant 12519to 12520be used by device drivers to force a GPE to a particular type. It will 12521be 12522especially useful for the drivers for the button devices mentioned above. 12523 12524Completed restructuring of the ACPI CA initialization sequence so that 12525default operation region handlers are installed before GPEs are 12526initialized 12527and the _PRW methods are executed. This will prevent errors when the 12528_PRW 12529methods attempt to access system memory or I/O space. 12530 12531GPE enable/disable no longer reads the GPE enable register. We now keep 12532the 12533enable info for runtime and wake separate and in the GPE_EVENT_INFO. We 12534thus no longer depend on the hardware to maintain these bits. 12535 12536Always clear the wake status and fixed/GPE status bits before sleep, even 12537for state S5. 12538 12539Improved the AML debugger output for displaying the GPE blocks and their 12540current status. 12541 12542Added new strings for the _OSI method, of the form "Windows 2001 SPx" 12543where 12544x = 0,1,2,3,4. 12545 12546Fixed a problem where the physical address was incorrectly calculated 12547when 12548the Load() operator was used to directly load from an Operation Region 12549(vs. 12550loading from a Field object.) Also added check for minimum table length 12551for 12552this case. 12553 12554Fix for multiple mutex acquisition. Restore original thread SyncLevel on 12555mutex release. 12556 12557Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for 12558consistency with the other fields returned. 12559 12560Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such 12561structure for each GPE in the system, so the size of this structure is 12562important. 12563 12564CPU stack requirement reduction: Cleaned up the method execution and 12565object 12566evaluation paths so that now a parameter structure is passed, instead of 12567copying the various method parameters over and over again. 12568 12569In evregion.c: Correctly exit and reenter the interpreter region if and 12570only if dispatching an operation region request to a user-installed 12571handler. 12572Do not exit/reenter when dispatching to a default handler (e.g., default 12573system memory or I/O handlers) 12574 12575 12576Notes for updating drivers for the new GPE support. The following 12577changes 12578must be made to ACPI-related device drivers that are attached to one or 12579more 12580GPEs: (This information will be added to the ACPI CA Programmer 12581Reference.) 12582 125831) AcpiInstallGpeHandler no longer automatically enables the GPE, you 12584must 12585explicitly call AcpiEnableGpe. 125862) There is a new interface called AcpiSetGpeType. This should be called 12587before enabling the GPE. Also, this interface will automatically disable 12588the GPE if it is currently enabled. 125893) AcpiEnableGpe no longer supports a GPE type flag. 12590 12591Specific drivers that must be changed: 125921) EC driver: 12593 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED, 12594AeGpeHandler, NULL); 12595 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME); 12596 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR); 12597 125982) Button Drivers (Power, Lid, Sleep): 12599Run _PRW method under parent device 12600If _PRW exists: /* This is a control-method button */ 12601 Extract GPE number and possibly GpeDevice 12602 AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN); 12603 AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR); 12604 12605For all other devices that have _PRWs, we automatically set the GPE type 12606to 12607ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled. 12608This 12609must be done on a selective basis, usually requiring some kind of user 12610app 12611to allow the user to pick the wake devices. 12612 12613 12614Code and Data Size: Current and previous core subsystem library sizes are 12615shown below. These are the code and data sizes for the acpica.lib 12616produced 12617by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12618any ACPI driver or OSPM code. The debug version of the code includes the 12619debug output trace mechanism and has a much larger code and data size. 12620Note 12621that these values will vary depending on the efficiency of the compiler 12622and 12623the compiler options used during generation. 12624 12625 Previous Release: 12626 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 12627 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 12628 Current Release: 12629 12630 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 12631 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 12632 12633 12634 12635---------------------------------------- 1263602 April 2004. Summary of changes for version 20040402: 12637 126381) ACPI CA Core Subsystem: 12639 12640Fixed an interpreter problem where an indirect store through an ArgX 12641parameter was incorrectly applying the "implicit conversion rules" during 12642the store. From the ACPI specification: "If the target is a method local 12643or 12644argument (LocalX or ArgX), no conversion is performed and the result is 12645stored directly to the target". The new behavior is to disable implicit 12646conversion during ALL stores to an ArgX. 12647 12648Changed the behavior of the _PRW method scan to ignore any and all errors 12649returned by a given _PRW. This prevents the scan from aborting from the 12650failure of any single _PRW. 12651 12652Moved the runtime configuration parameters from the global init procedure 12653to 12654static variables in acglobal.h. This will allow the host to override the 12655default values easily. 12656 12657Code and Data Size: Current and previous core subsystem library sizes are 12658shown below. These are the code and data sizes for the acpica.lib 12659produced 12660by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12661any ACPI driver or OSPM code. The debug version of the code includes the 12662debug output trace mechanism and has a much larger code and data size. 12663Note 12664that these values will vary depending on the efficiency of the compiler 12665and 12666the compiler options used during generation. 12667 12668 Previous Release: 12669 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 12670 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 12671 Current Release: 12672 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 12673 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 12674 12675 126762) iASL Compiler/Disassembler: 12677 12678iASL now fully disassembles SSDTs. However, External() statements are 12679not 12680generated automatically for unresolved symbols at this time. This is a 12681planned feature for future implementation. 12682 12683Fixed a scoping problem in the disassembler that occurs when the type of 12684the 12685target of a Scope() operator is overridden. This problem caused an 12686incorrectly nested internal namespace to be constructed. 12687 12688Any warnings or errors that are emitted during disassembly are now 12689commented 12690out automatically so that the resulting file can be recompiled without 12691any 12692hand editing. 12693 12694---------------------------------------- 1269526 March 2004. Summary of changes for version 20040326: 12696 126971) ACPI CA Core Subsystem: 12698 12699Implemented support for "wake" GPEs via interaction between GPEs and the 12700_PRW methods. Every GPE that is pointed to by one or more _PRWs is 12701identified as a WAKE GPE and by default will no longer be enabled at 12702runtime. Previously, we were blindly enabling all GPEs with a 12703corresponding 12704_Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway. 12705We 12706believe this has been the cause of thousands of "spurious" GPEs on some 12707systems. 12708 12709This new GPE behavior is can be reverted to the original behavior (enable 12710ALL GPEs at runtime) via a runtime flag. 12711 12712Fixed a problem where aliased control methods could not access objects 12713properly. The proper scope within the namespace was not initialized 12714(transferred to the target of the aliased method) before executing the 12715target method. 12716 12717Fixed a potential race condition on internal object deletion on the 12718return 12719object in AcpiEvaluateObject. 12720 12721Integrated a fix for resource descriptors where both _MEM and _MTP were 12722being extracted instead of just _MEM. (i.e. bitmask was incorrectly too 12723wide, 0x0F instead of 0x03.) 12724 12725Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName, 12726preventing 12727a 12728fault in some cases. 12729 12730Updated Notify() values for debug statements in evmisc.c 12731 12732Return proper status from AcpiUtMutexInitialize, not just simply AE_OK. 12733 12734Code and Data Size: Current and previous core subsystem library sizes are 12735shown below. These are the code and data sizes for the acpica.lib 12736produced 12737by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12738any ACPI driver or OSPM code. The debug version of the code includes the 12739debug output trace mechanism and has a much larger code and data size. 12740Note 12741that these values will vary depending on the efficiency of the compiler 12742and 12743the compiler options used during generation. 12744 12745 Previous Release: 12746 12747 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 12748 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 12749 Current Release: 12750 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 12751 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 12752 12753---------------------------------------- 1275411 March 2004. Summary of changes for version 20040311: 12755 127561) ACPI CA Core Subsystem: 12757 12758Fixed a problem where errors occurring during the parse phase of control 12759method execution did not abort cleanly. For example, objects created and 12760installed in the namespace were not deleted. This caused all subsequent 12761invocations of the method to return the AE_ALREADY_EXISTS exception. 12762 12763Implemented a mechanism to force a control method to "Serialized" 12764execution 12765if the method attempts to create namespace objects. (The root of the 12766AE_ALREADY_EXISTS problem.) 12767 12768Implemented support for the predefined _OSI "internal" control method. 12769Initial supported strings are "Linux", "Windows 2000", "Windows 2001", 12770and 12771"Windows 2001.1", and can be easily upgraded for new strings as 12772necessary. 12773This feature will allow "other" operating systems to execute the fully 12774tested, "Windows" code path through the ASL code 12775 12776Global Lock Support: Now allows multiple acquires and releases with any 12777internal thread. Removed concept of "owning thread" for this special 12778mutex. 12779 12780Fixed two functions that were inappropriately declaring large objects on 12781the 12782CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage 12783during 12784method execution considerably. 12785 12786Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the 12787S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT. 12788 12789Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs 12790defined on the machine. 12791 12792Implemented two runtime options: One to force all control method 12793execution 12794to "Serialized" to mimic Windows behavior, another to disable _OSI 12795support 12796if it causes problems on a given machine. 12797 12798Code and Data Size: Current and previous core subsystem library sizes are 12799shown below. These are the code and data sizes for the acpica.lib 12800produced 12801by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12802any ACPI driver or OSPM code. The debug version of the code includes the 12803debug output trace mechanism and has a much larger code and data size. 12804Note 12805that these values will vary depending on the efficiency of the compiler 12806and 12807the compiler options used during generation. 12808 12809 Previous Release: 12810 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 12811 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 12812 Current Release: 12813 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 12814 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 12815 128162) iASL Compiler/Disassembler: 12817 12818Fixed an array size problem for FreeBSD that would cause the compiler to 12819fault. 12820 12821---------------------------------------- 1282220 February 2004. Summary of changes for version 20040220: 12823 12824 128251) ACPI CA Core Subsystem: 12826 12827Implemented execution of _SxD methods for Device objects in the 12828GetObjectInfo interface. 12829 12830Fixed calls to _SST method to pass the correct arguments. 12831 12832Added a call to _SST on wake to restore to "working" state. 12833 12834Check for End-Of-Buffer failure case in the WalkResources interface. 12835 12836Integrated fix for 64-bit alignment issue in acglobal.h by moving two 12837structures to the beginning of the file. 12838 12839After wake, clear GPE status register(s) before enabling GPEs. 12840 12841After wake, clear/enable power button. (Perhaps we should clear/enable 12842all 12843fixed events upon wake.) 12844 12845Fixed a couple of possible memory leaks in the Namespace manager. 12846 12847Integrated latest acnetbsd.h file. 12848 12849---------------------------------------- 1285011 February 2004. Summary of changes for version 20040211: 12851 12852 128531) ACPI CA Core Subsystem: 12854 12855Completed investigation and implementation of the call-by-reference 12856mechanism for control method arguments. 12857 12858Fixed a problem where a store of an object into an indexed package could 12859fail if the store occurs within a different method than the method that 12860created the package. 12861 12862Fixed a problem where the ToDecimal operator could return incorrect 12863results. 12864 12865Fixed a problem where the CopyObject operator could fail on some of the 12866more 12867obscure objects (e.g., Reference objects.) 12868 12869Improved the output of the Debug object to display buffer, package, and 12870index objects. 12871 12872Fixed a problem where constructs of the form "RefOf (ArgX)" did not 12873return 12874the expected result. 12875 12876Added permanent ACPI_REPORT_ERROR macros for all instances of the 12877ACPI_AML_INTERNAL exception. 12878 12879Integrated latest version of acfreebsd.h 12880 12881---------------------------------------- 1288216 January 2004. Summary of changes for version 20040116: 12883 12884The purpose of this release is primarily to update the copyright years in 12885each module, thus causing a huge number of diffs. There are a few small 12886functional changes, however. 12887 128881) ACPI CA Core Subsystem: 12889 12890Improved error messages when there is a problem finding one or more of 12891the 12892required base ACPI tables 12893 12894Reintroduced the definition of APIC_HEADER in actbl.h 12895 12896Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h) 12897 12898Removed extraneous reference to NewObj in dsmthdat.c 12899 129002) iASL compiler 12901 12902Fixed a problem introduced in December that disabled the correct 12903disassembly 12904of Resource Templates 12905 12906 12907---------------------------------------- 1290803 December 2003. Summary of changes for version 20031203: 12909 129101) ACPI CA Core Subsystem: 12911 12912Changed the initialization of Operation Regions during subsystem 12913init to perform two entire walks of the ACPI namespace; The first 12914to initialize the regions themselves, the second to execute the 12915_REG methods. This fixed some interdependencies across _REG 12916methods found on some machines. 12917 12918Fixed a problem where a Store(Local0, Local1) could simply update 12919the object reference count, and not create a new copy of the 12920object if the Local1 is uninitialized. 12921 12922Implemented support for the _SST reserved method during sleep 12923transitions. 12924 12925Implemented support to clear the SLP_TYP and SLP_EN bits when 12926waking up, this is apparently required by some machines. 12927 12928When sleeping, clear the wake status only if SleepState is not S5. 12929 12930Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect 12931pointer arithmetic advanced a string pointer too far. 12932 12933Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer 12934could be returned if the requested table has not been loaded. 12935 12936Within the support for IRQ resources, restructured the handling of 12937the active and edge/level bits. 12938 12939Fixed a few problems in AcpiPsxExecute() where memory could be 12940leaked under certain error conditions. 12941 12942Improved error messages for the cases where the ACPI mode could 12943not be entered. 12944 12945Code and Data Size: Current and previous core subsystem library 12946sizes are shown below. These are the code and data sizes for the 12947acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 12948these values do not include any ACPI driver or OSPM code. The 12949debug version of the code includes the debug output trace 12950mechanism and has a much larger code and data size. Note that 12951these values will vary depending on the efficiency of the compiler 12952and the compiler options used during generation. 12953 12954 Previous Release (20031029): 12955 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 12956 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 12957 Current Release: 12958 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 12959 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 12960 129612) iASL Compiler/Disassembler: 12962 12963Implemented a fix for the iASL disassembler where a bad index was 12964generated. This was most noticeable on 64-bit platforms 12965 12966 12967---------------------------------------- 1296829 October 2003. Summary of changes for version 20031029: 12969 129701) ACPI CA Core Subsystem: 12971 12972 12973Fixed a problem where a level-triggered GPE with an associated 12974_Lxx control method was incorrectly cleared twice. 12975 12976Fixed a problem with the Field support code where an access can 12977occur beyond the end-of-region if the field is non-aligned but 12978extends to the very end of the parent region (resulted in an 12979AE_AML_REGION_LIMIT exception.) 12980 12981Fixed a problem with ACPI Fixed Events where an RT Clock handler 12982would not get invoked on an RTC event. The RTC event bitmasks for 12983the PM1 registers were not being initialized properly. 12984 12985Implemented support for executing _STA and _INI methods for 12986Processor objects. Although this is currently not part of the 12987ACPI specification, there is existing ASL code that depends on the 12988init-time execution of these methods. 12989 12990Implemented and deployed a GetDescriptorName function to decode 12991the various types of internal descriptors. Guards against null 12992descriptors during debug output also. 12993 12994Implemented and deployed a GetNodeName function to extract the 4- 12995character namespace node name. This function simplifies the debug 12996and error output, as well as guarding against null pointers during 12997output. 12998 12999Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to 13000simplify the debug and error output of 64-bit integers. This 13001macro replaces the HIDWORD and LODWORD macros for dumping these 13002integers. 13003 13004Updated the implementation of the Stall() operator to only call 13005AcpiOsStall(), and also return an error if the operand is larger 13006than 255. This preserves the required behavior of not 13007relinquishing the processor, as would happen if AcpiOsSleep() was 13008called for "long stalls". 13009 13010Constructs of the form "Store(LocalX,LocalX)" where LocalX is not 13011initialized are now treated as NOOPs. 13012 13013Cleaned up a handful of warnings during 64-bit generation. 13014 13015Fixed a reported error where and incorrect GPE number was passed 13016to the GPE dispatch handler. This value is only used for error 13017output, however. Used this opportunity to clean up and streamline 13018the GPE dispatch code. 13019 13020Code and Data Size: Current and previous core subsystem library 13021sizes are shown below. These are the code and data sizes for the 13022acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 13023these values do not include any ACPI driver or OSPM code. The 13024 13025debug version of the code includes the debug output trace 13026mechanism and has a much larger code and data size. Note that 13027these values will vary depending on the efficiency of the compiler 13028and the compiler options used during generation. 13029 13030 Previous Release (20031002): 13031 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 13032 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 13033 Current Release: 13034 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 13035 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 13036 13037 130382) iASL Compiler/Disassembler: 13039 13040Updated the iASL compiler to return an error if the operand to the 13041Stall() operator is larger than 255. 13042 13043 13044---------------------------------------- 1304502 October 2003. Summary of changes for version 20031002: 13046 13047 130481) ACPI CA Core Subsystem: 13049 13050Fixed a problem with Index Fields where the index was not 13051incremented for fields that require multiple writes to the 13052index/data registers (Fields that are wider than the data 13053register.) 13054 13055Fixed a problem with all Field objects where a write could go 13056beyond the end-of-field if the field was larger than the access 13057granularity and therefore required multiple writes to complete the 13058request. An extra write beyond the end of the field could happen 13059inadvertently. 13060 13061Fixed a problem with Index Fields where a BUFFER_OVERFLOW error 13062would incorrectly be returned if the width of the Data Register 13063was larger than the specified field access width. 13064 13065Completed fixes for LoadTable() and Unload() and verified their 13066operation. Implemented full support for the "DdbHandle" object 13067throughout the ACPI CA subsystem. 13068 13069Implemented full support for the MADT and ECDT tables in the ACPI 13070CA header files. Even though these tables are not directly 13071consumed by ACPI CA, the header definitions are useful for ACPI 13072device drivers. 13073 13074Integrated resource descriptor fixes posted to the Linux ACPI 13075list. This included checks for minimum descriptor length, and 13076support for trailing NULL strings within descriptors that have 13077optional string elements. 13078 13079Code and Data Size: Current and previous core subsystem library 13080sizes are shown below. These are the code and data sizes for the 13081acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 13082these values do not include any ACPI driver or OSPM code. The 13083debug version of the code includes the debug output trace 13084mechanism and has a much larger code and data size. Note that 13085these values will vary depending on the efficiency of the compiler 13086and the compiler options used during generation. 13087 13088 Previous Release (20030918): 13089 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 13090 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 13091 Current Release: 13092 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 13093 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 13094 13095 130962) iASL Compiler: 13097 13098Implemented detection of non-ASCII characters within the input 13099source ASL file. This catches attempts to compile binary (AML) 13100files early in the compile, with an informative error message. 13101 13102Fixed a problem where the disassembler would fault if the output 13103filename could not be generated or if the output file could not be 13104opened. 13105 13106---------------------------------------- 1310718 September 2003. Summary of changes for version 20030918: 13108 13109 131101) ACPI CA Core Subsystem: 13111 13112Found and fixed a longstanding problem with the late execution of 13113the various deferred AML opcodes (such as Operation Regions, 13114Buffer Fields, Buffers, and Packages). If the name string 13115specified for the name of the new object placed the object in a 13116scope other than the current scope, the initialization/execution 13117of the opcode failed. The solution to this problem was to 13118implement a mechanism where the late execution of such opcodes 13119does not attempt to lookup/create the name a second time in an 13120incorrect scope. This fixes the "region size computed 13121incorrectly" problem. 13122 13123Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a 13124Global Lock AE_BAD_PARAMETER error. 13125 13126Fixed several 64-bit issues with prototypes, casting and data 13127types. 13128 13129Removed duplicate prototype from acdisasm.h 13130 13131Fixed an issue involving EC Operation Region Detach (Shaohua Li) 13132 13133Code and Data Size: Current and previous core subsystem library 13134sizes are shown below. These are the code and data sizes for the 13135acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 13136these values do not include any ACPI driver or OSPM code. The 13137debug version of the code includes the debug output trace 13138mechanism and has a much larger code and data size. Note that 13139these values will vary depending on the efficiency of the compiler 13140and the compiler options used during generation. 13141 13142 Previous Release: 13143 13144 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 13145 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 13146 Current Release: 13147 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 13148 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 13149 13150 131512) Linux: 13152 13153Fixed the AcpiOsSleep implementation in osunixxf.c to pass the 13154correct sleep time in seconds. 13155 13156---------------------------------------- 1315714 July 2003. Summary of changes for version 20030619: 13158 131591) ACPI CA Core Subsystem: 13160 13161Parse SSDTs in order discovered, as opposed to reverse order 13162(Hrvoje Habjanic) 13163 13164Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas 13165Klausner, 13166 Nate Lawson) 13167 13168 131692) Linux: 13170 13171Dynamically allocate SDT list (suggested by Andi Kleen) 13172 13173proc function return value cleanups (Andi Kleen) 13174 13175Correctly handle NMI watchdog during long stalls (Andrew Morton) 13176 13177Make it so acpismp=force works (reported by Andrew Morton) 13178 13179 13180---------------------------------------- 1318119 June 2003. Summary of changes for version 20030619: 13182 131831) ACPI CA Core Subsystem: 13184 13185Fix To/FromBCD, eliminating the need for an arch-specific #define. 13186 13187Do not acquire a semaphore in the S5 shutdown path. 13188 13189Fix ex_digits_needed for 0. (Takayoshi Kochi) 13190 13191Fix sleep/stall code reversal. (Andi Kleen) 13192 13193Revert a change having to do with control method calling 13194semantics. 13195 131962) Linux: 13197 13198acpiphp update (Takayoshi Kochi) 13199 13200Export acpi_disabled for sonypi (Stelian Pop) 13201 13202Mention acpismp=force in config help 13203 13204Re-add acpitable.c and acpismp=force. This improves backwards 13205 13206compatibility and also cleans up the code to a significant degree. 13207 13208Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge) 13209 13210---------------------------------------- 1321122 May 2003. Summary of changes for version 20030522: 13212 132131) ACPI CA Core Subsystem: 13214 13215Found and fixed a reported problem where an AE_NOT_FOUND error 13216occurred occasionally during _BST evaluation. This turned out to 13217be an Owner ID allocation issue where a called method did not get 13218a new ID assigned to it. Eventually, (after 64k calls), the Owner 13219ID UINT16 would wraparound so that the ID would be the same as the 13220caller's and the called method would delete the caller's 13221namespace. 13222 13223Implemented extended error reporting for control methods that are 13224aborted due to a run-time exception. Output includes the exact 13225AML instruction that caused the method abort, a dump of the method 13226locals and arguments at the time of the abort, and a trace of all 13227nested control method calls. 13228 13229Modified the interpreter to allow the creation of buffers of zero 13230length from the AML code. Implemented new code to ensure that no 13231attempt is made to actually allocate a memory buffer (of length 13232zero) - instead, a simple buffer object with a NULL buffer pointer 13233and length zero is created. A warning is no longer issued when 13234the AML attempts to create a zero-length buffer. 13235 13236Implemented a workaround for the "leading asterisk issue" in 13237_HIDs, _UIDs, and _CIDs in the AML interpreter. One leading 13238asterisk is automatically removed if present in any HID, UID, or 13239CID strings. The iASL compiler will still flag this asterisk as 13240an error, however. 13241 13242Implemented full support for _CID methods that return a package of 13243multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface 13244now additionally returns a device _CID list if present. This 13245required a change to the external interface in order to pass an 13246ACPI_BUFFER object as a parameter since the _CID list is of 13247variable length. 13248 13249Fixed a problem with the new AE_SAME_HANDLER exception where 13250handler initialization code did not know about this exception. 13251 13252Code and Data Size: Current and previous core subsystem library 13253sizes are shown below. These are the code and data sizes for the 13254acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 13255these values do not include any ACPI driver or OSPM code. The 13256debug version of the code includes the debug output trace 13257mechanism and has a much larger code and data size. Note that 13258these values will vary depending on the efficiency of the compiler 13259and the compiler options used during generation. 13260 13261 Previous Release (20030509): 13262 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 13263 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 13264 Current Release: 13265 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 13266 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 13267 13268 132692) Linux: 13270 13271Fixed a bug in which we would reinitialize the ACPI interrupt 13272after it was already working, thus disabling all ACPI and the IRQs 13273for any other device sharing the interrupt. (Thanks to Stian 13274Jordet) 13275 13276Toshiba driver update (John Belmonte) 13277 13278Return only 0 or 1 for our interrupt handler status (Andrew 13279Morton) 13280 13281 132823) iASL Compiler: 13283 13284Fixed a reported problem where multiple (nested) ElseIf() 13285statements were not handled correctly by the compiler, resulting 13286in incorrect warnings and incorrect AML code. This was a problem 13287in both the ASL parser and the code generator. 13288 13289 132904) Documentation: 13291 13292Added changes to existing interfaces, new exception codes, and new 13293text concerning reference count object management versus garbage 13294collection. 13295 13296---------------------------------------- 1329709 May 2003. Summary of changes for version 20030509. 13298 13299 133001) ACPI CA Core Subsystem: 13301 13302Changed the subsystem initialization sequence to hold off 13303installation of address space handlers until the hardware has been 13304initialized and the system has entered ACPI mode. This is because 13305the installation of space handlers can cause _REG methods to be 13306run. Previously, the _REG methods could potentially be run before 13307ACPI mode was enabled. 13308 13309Fixed some memory leak issues related to address space handler and 13310notify handler installation. There were some problems with the 13311reference count mechanism caused by the fact that the handler 13312objects are shared across several namespace objects. 13313 13314Fixed a reported problem where reference counts within the 13315namespace were not properly updated when named objects created by 13316method execution were deleted. 13317 13318Fixed a reported problem where multiple SSDTs caused a deletion 13319issue during subsystem termination. Restructured the table data 13320structures to simplify the linked lists and the related code. 13321 13322Fixed a problem where the table ID associated with secondary 13323tables (SSDTs) was not being propagated into the namespace objects 13324created by those tables. This would only present a problem for 13325tables that are unloaded at run-time, however. 13326 13327Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE 13328type as the length parameter (instead of UINT32). 13329 13330Solved a long-standing problem where an ALREADY_EXISTS error 13331appears on various systems. This problem could happen when there 13332are multiple PCI_Config operation regions under a single PCI root 13333bus. This doesn't happen very frequently, but there are some 13334systems that do this in the ASL. 13335 13336Fixed a reported problem where the internal DeleteNode function 13337was incorrectly handling the case where a namespace node was the 13338first in the parent's child list, and had additional peers (not 13339the only child, but first in the list of children.) 13340 13341Code and Data Size: Current core subsystem library sizes are shown 13342below. These are the code and data sizes for the acpica.lib 13343produced by the Microsoft Visual C++ 6.0 compiler, and these 13344values do not include any ACPI driver or OSPM code. The debug 13345version of the code includes the debug output trace mechanism and 13346has a much larger code and data size. Note that these values will 13347vary depending on the efficiency of the compiler and the compiler 13348options used during generation. 13349 13350 Previous Release 13351 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 13352 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 13353 Current Release: 13354 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 13355 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 13356 13357 133582) Linux: 13359 13360Allow ":" in OS override string (Ducrot Bruno) 13361 13362Kobject fix (Greg KH) 13363 13364 133653 iASL Compiler/Disassembler: 13366 13367Fixed a problem in the generation of the C source code files (AML 13368is emitted in C source statements for BIOS inclusion) where the 13369Ascii dump that appears within a C comment at the end of each line 13370could cause a compile time error if the AML sequence happens to 13371have an open comment or close comment sequence embedded. 13372 13373 13374---------------------------------------- 1337524 April 2003. Summary of changes for version 20030424. 13376 13377 133781) ACPI CA Core Subsystem: 13379 13380Support for big-endian systems has been implemented. Most of the 13381support has been invisibly added behind big-endian versions of the 13382ACPI_MOVE_* macros. 13383 13384Fixed a problem in AcpiHwDisableGpeBlock() and 13385AcpiHwClearGpeBlock() where an incorrect offset was passed to the 13386low level hardware write routine. The offset parameter was 13387actually eliminated from the low level read/write routines because 13388they had become obsolete. 13389 13390Fixed a problem where a handler object was deleted twice during 13391the removal of a fixed event handler. 13392 13393 133942) Linux: 13395 13396A fix for SMP systems with link devices was contributed by 13397 13398Compaq's Dan Zink. 13399 13400(2.5) Return whether we handled the interrupt in our IRQ handler. 13401(Linux ISRs no longer return void, so we can propagate the handler 13402return value from the ACPI CA core back to the OS.) 13403 13404 13405 134063) Documentation: 13407 13408The ACPI CA Programmer Reference has been updated to reflect new 13409interfaces and changes to existing interfaces. 13410 13411---------------------------------------- 1341228 March 2003. Summary of changes for version 20030328. 13413 134141) ACPI CA Core Subsystem: 13415 13416The GPE Block Device support has been completed. New interfaces 13417are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event 13418interfaces (enable, disable, clear, getstatus) have been split 13419into separate interfaces for Fixed Events and General Purpose 13420Events (GPEs) in order to support GPE Block Devices properly. 13421 13422Fixed a problem where the error message "Failed to acquire 13423semaphore" would appear during operations on the embedded 13424controller (EC). 13425 13426Code and Data Size: Current core subsystem library sizes are shown 13427below. These are the code and data sizes for the acpica.lib 13428produced by the Microsoft Visual C++ 6.0 compiler, and these 13429values do not include any ACPI driver or OSPM code. The debug 13430version of the code includes the debug output trace mechanism and 13431has a much larger code and data size. Note that these values will 13432vary depending on the efficiency of the compiler and the compiler 13433options used during generation. 13434 13435 Previous Release 13436 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 13437 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 13438 Current Release: 13439 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 13440 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 13441 13442 13443---------------------------------------- 1344428 February 2003. Summary of changes for version 20030228. 13445 13446 134471) ACPI CA Core Subsystem: 13448 13449The GPE handling and dispatch code has been completely overhauled 13450in preparation for support of GPE Block Devices (ID ACPI0006). 13451This affects internal data structures and code only; there should 13452be no differences visible externally. One new file has been 13453added, evgpeblk.c 13454 13455The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only 13456fields that are used to determine the GPE block lengths. The 13457REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address 13458structures are ignored. This is per the ACPI specification but it 13459isn't very clear. The full 256 Block 0/1 GPEs are now supported 13460(the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128). 13461 13462In the SCI interrupt handler, removed the read of the PM1_CONTROL 13463register to look at the SCI_EN bit. On some machines, this read 13464causes an SMI event and greatly slows down SCI events. (This may 13465in fact be the cause of slow battery status response on some 13466systems.) 13467 13468Fixed a problem where a store of a NULL string to a package object 13469could cause the premature deletion of the object. This was seen 13470during execution of the battery _BIF method on some systems, 13471resulting in no battery data being returned. 13472 13473Added AcpiWalkResources interface to simplify parsing of resource 13474lists. 13475 13476Code and Data Size: Current core subsystem library sizes are shown 13477below. These are the code and data sizes for the acpica.lib 13478produced by the Microsoft Visual C++ 6.0 compiler, and these 13479values do not include any ACPI driver or OSPM code. The debug 13480version of the code includes the debug output trace mechanism and 13481has a much larger code and data size. Note that these values will 13482vary depending on the efficiency of the compiler and the compiler 13483options used during generation. 13484 13485 Previous Release 13486 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 13487 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 13488 Current Release: 13489 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 13490 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 13491 13492 134932) Linux 13494 13495S3 fixes (Ole Rohne) 13496 13497Update ACPI PHP driver with to use new acpi_walk_resource API 13498(Bjorn Helgaas) 13499 13500Add S4BIOS support (Pavel Machek) 13501 13502Map in entire table before performing checksum (John Stultz) 13503 13504Expand the mem= cmdline to allow the specification of reserved and 13505ACPI DATA blocks (Pavel Machek) 13506 13507Never use ACPI on VISWS 13508 13509Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez) 13510 13511Revert a change that allowed P_BLK lengths to be 4 or 5. This is 13512causing us to think that some systems support C2 when they really 13513don't. 13514 13515Do not count processor objects for non-present CPUs (Thanks to 13516Dominik Brodowski) 13517 13518 135193) iASL Compiler: 13520 13521Fixed a problem where ASL include files could not be found and 13522opened. 13523 13524Added support for the _PDC reserved name. 13525 13526 13527---------------------------------------- 1352822 January 2003. Summary of changes for version 20030122. 13529 13530 135311) ACPI CA Core Subsystem: 13532 13533Added a check for constructs of the form: Store (Local0, Local0) 13534where Local0 is not initialized. Apparently, some BIOS 13535programmers believe that this is a NOOP. Since this store doesn't 13536do anything anyway, the new prototype behavior will ignore this 13537error. This is a case where we can relax the strict checking in 13538the interpreter in the name of compatibility. 13539 13540 135412) Linux 13542 13543The AcpiSrc Source Conversion Utility has been released with the 13544Linux package for the first time. This is the utility that is 13545used to convert the ACPI CA base source code to the Linux version. 13546 13547(Both) Handle P_BLK lengths shorter than 6 more gracefully 13548 13549(Both) Move more headers to include/acpi, and delete an unused 13550header. 13551 13552(Both) Move drivers/acpi/include directory to include/acpi 13553 13554(Both) Boot functions don't use cmdline, so don't pass it around 13555 13556(Both) Remove include of unused header (Adrian Bunk) 13557 13558(Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since 13559the 13560former now also includes the latter, acpiphp.h only needs the one, 13561now. 13562 13563(2.5) Make it possible to select method of bios restoring after S3 13564resume. [=> no more ugly ifdefs] (Pavel Machek) 13565 13566(2.5) Make proc write interfaces work (Pavel Machek) 13567 13568(2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski) 13569 13570(2.5) Break out ACPI Perf code into its own module, under cpufreq 13571(Dominik Brodowski) 13572 13573(2.4) S4BIOS support (Ducrot Bruno) 13574 13575(2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio 13576Visinoni) 13577 13578 135793) iASL Compiler: 13580 13581Added support to disassemble SSDT and PSDTs. 13582 13583Implemented support to obtain SSDTs from the Windows registry if 13584available. 13585 13586 13587---------------------------------------- 1358809 January 2003. Summary of changes for version 20030109. 13589 135901) ACPI CA Core Subsystem: 13591 13592Changed the behavior of the internal Buffer-to-String conversion 13593function. The current ACPI specification states that the contents 13594of the buffer are "converted to a string of two-character 13595hexadecimal numbers, each separated by a space". Unfortunately, 13596this definition is not backwards compatible with existing ACPI 1.0 13597implementations (although the behavior was not defined in the ACPI 135981.0 specification). The new behavior simply copies data from the 13599buffer to the string until a null character is found or the end of 13600the buffer is reached. The new String object is always null 13601terminated. This problem was seen during the generation of _BIF 13602battery data where incorrect strings were returned for battery 13603type, etc. This will also require an errata to the ACPI 13604specification. 13605 13606Renamed all instances of NATIVE_UINT and NATIVE_INT to 13607ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively. 13608 13609Copyright in all module headers (both Linux and non-Linux) has be 13610updated to 2003. 13611 13612Code and Data Size: Current core subsystem library sizes are shown 13613below. These are the code and data sizes for the acpica.lib 13614produced by the Microsoft Visual C++ 6.0 compiler, and these 13615values do not include any ACPI driver or OSPM code. The debug 13616version of the code includes the debug output trace mechanism and 13617has a much larger code and data size. Note that these values will 13618vary depending on the efficiency of the compiler and the compiler 13619options used during generation. 13620 13621 Previous Release 13622 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 13623 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 13624 Current Release: 13625 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 13626 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 13627 13628 136292) Linux 13630 13631Fixed an oops on module insertion/removal (Matthew Tippett) 13632 13633(2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante) 13634 13635(2.5) Replace pr_debug (Randy Dunlap) 13636 13637(2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski) 13638 13639(Both) Eliminate spawning of thread from timer callback, in favor 13640of schedule_work() 13641 13642(Both) Show Lid status in /proc (Zdenek OGAR Skalak) 13643 13644(Both) Added define for Fixed Function HW region (Matthew Wilcox) 13645 13646(Both) Add missing statics to button.c (Pavel Machek) 13647 13648Several changes have been made to the source code translation 13649utility that generates the Linux Code in order to make the code 13650more "Linux-like": 13651 13652All typedefs on structs and unions have been removed in keeping 13653with the Linux coding style. 13654 13655Removed the non-Linux SourceSafe module revision number from each 13656module header. 13657 13658Completed major overhaul of symbols to be lowercased for linux. 13659Doubled the number of symbols that are lowercased. 13660 13661Fixed a problem where identifiers within procedure headers and 13662within quotes were not fully lower cased (they were left with a 13663starting capital.) 13664 13665Some C macros whose only purpose is to allow the generation of 16- 13666bit code are now completely removed in the Linux code, increasing 13667readability and maintainability. 13668 13669---------------------------------------- 13670 1367112 December 2002. Summary of changes for version 20021212. 13672 13673 136741) ACPI CA Core Subsystem: 13675 13676Fixed a problem where the creation of a zero-length AML Buffer 13677would cause a fault. 13678 13679Fixed a problem where a Buffer object that pointed to a static AML 13680buffer (in an ACPI table) could inadvertently be deleted, causing 13681memory corruption. 13682 13683Fixed a problem where a user buffer (passed in to the external 13684ACPI CA interfaces) could be overwritten if the buffer was too 13685small to complete the operation, causing memory corruption. 13686 13687Fixed a problem in the Buffer-to-String conversion code where a 13688string of length one was always returned, regardless of the size 13689of the input Buffer object. 13690 13691Removed the NATIVE_CHAR data type across the entire source due to 13692lack of need and lack of consistent use. 13693 13694Code and Data Size: Current core subsystem library sizes are shown 13695below. These are the code and data sizes for the acpica.lib 13696produced by the Microsoft Visual C++ 6.0 compiler, and these 13697values do not include any ACPI driver or OSPM code. The debug 13698version of the code includes the debug output trace mechanism and 13699has a much larger code and data size. Note that these values will 13700vary depending on the efficiency of the compiler and the compiler 13701options used during generation. 13702 13703 Previous Release 13704 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 13705 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 13706 Current Release: 13707 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 13708 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 13709 13710 13711---------------------------------------- 1371205 December 2002. Summary of changes for version 20021205. 13713 137141) ACPI CA Core Subsystem: 13715 13716Fixed a problem where a store to a String or Buffer object could 13717cause corruption of the DSDT if the object type being stored was 13718the same as the target object type and the length of the object 13719being stored was equal to or smaller than the original (existing) 13720target object. This was seen to cause corruption of battery _BIF 13721buffers if the _BIF method modified the buffer on the fly. 13722 13723Fixed a problem where an internal error was generated if a control 13724method invocation was used in an OperationRegion, Buffer, or 13725Package declaration. This was caused by the deferred parsing of 13726the control method and thus the deferred creation of the internal 13727method object. The solution to this problem was to create the 13728internal method object at the moment the method is encountered in 13729the first pass - so that subsequent references to the method will 13730able to obtain the required parameter count and thus properly 13731parse the method invocation. This problem presented itself as an 13732AE_AML_INTERNAL during the pass 1 parse phase during table load. 13733 13734Fixed a problem where the internal String object copy routine did 13735not always allocate sufficient memory for the target String object 13736and caused memory corruption. This problem was seen to cause 13737"Allocation already present in list!" errors as memory allocation 13738became corrupted. 13739 13740Implemented a new function for the evaluation of namespace objects 13741that allows the specification of the allowable return object 13742types. This simplifies a lot of code that checks for a return 13743object of one or more specific objects returned from the 13744evaluation (such as _STA, etc.) This may become and external 13745function if it would be useful to ACPI-related drivers. 13746 13747Completed another round of prefixing #defines with "ACPI_" for 13748clarity. 13749 13750Completed additional code restructuring to allow more modular 13751linking for iASL compiler and AcpiExec. Several files were split 13752creating new files. New files: nsparse.c dsinit.c evgpe.c 13753 13754Implemented an abort mechanism to terminate an executing control 13755method via the AML debugger. This feature is useful for debugging 13756control methods that depend (wait) for specific hardware 13757responses. 13758 13759Code and Data Size: Current core subsystem library sizes are shown 13760below. These are the code and data sizes for the acpica.lib 13761produced by the Microsoft Visual C++ 6.0 compiler, and these 13762values do not include any ACPI driver or OSPM code. The debug 13763version of the code includes the debug output trace mechanism and 13764has a much larger code and data size. Note that these values will 13765vary depending on the efficiency of the compiler and the compiler 13766options used during generation. 13767 13768 Previous Release 13769 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 13770 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 13771 Current Release: 13772 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 13773 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 13774 13775 137762) iASL Compiler/Disassembler 13777 13778Fixed a compiler code generation problem for "Interrupt" Resource 13779Descriptors. If specified in the ASL, the optional "Resource 13780Source Index" and "Resource Source" fields were not inserted into 13781the correct location within the AML resource descriptor, creating 13782an invalid descriptor. 13783 13784Fixed a disassembler problem for "Interrupt" resource descriptors. 13785The optional "Resource Source Index" and "Resource Source" fields 13786were ignored. 13787 13788 13789---------------------------------------- 1379022 November 2002. Summary of changes for version 20021122. 13791 13792 137931) ACPI CA Core Subsystem: 13794 13795Fixed a reported problem where an object stored to a Method Local 13796or Arg was not copied to a new object during the store - the 13797object pointer was simply copied to the Local/Arg. This caused 13798all subsequent operations on the Local/Arg to also affect the 13799original source of the store operation. 13800 13801Fixed a problem where a store operation to a Method Local or Arg 13802was not completed properly if the Local/Arg contained a reference 13803(from RefOf) to a named field. The general-purpose store-to- 13804namespace-node code is now used so that this case is handled 13805automatically. 13806 13807Fixed a problem where the internal object copy routine would cause 13808a protection fault if the object being copied was a Package and 13809contained either 1) a NULL package element or 2) a nested sub- 13810package. 13811 13812Fixed a problem with the GPE initialization that resulted from an 13813ambiguity in the ACPI specification. One section of the 13814specification states that both the address and length of the GPE 13815block must be zero if the block is not supported. Another section 13816implies that only the address need be zero if the block is not 13817supported. The code has been changed so that both the address and 13818the length must be non-zero to indicate a valid GPE block (i.e., 13819if either the address or the length is zero, the GPE block is 13820invalid.) 13821 13822Code and Data Size: Current core subsystem library sizes are shown 13823below. These are the code and data sizes for the acpica.lib 13824produced by the Microsoft Visual C++ 6.0 compiler, and these 13825values do not include any ACPI driver or OSPM code. The debug 13826version of the code includes the debug output trace mechanism and 13827has a much larger code and data size. Note that these values will 13828vary depending on the efficiency of the compiler and the compiler 13829options used during generation. 13830 13831 Previous Release 13832 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 13833 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 13834 Current Release: 13835 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 13836 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 13837 13838 138392) Linux 13840 13841Cleaned up EC driver. Exported an external EC read/write 13842interface. By going through this, other drivers (most notably 13843sonypi) will be able to serialize access to the EC. 13844 13845 138463) iASL Compiler/Disassembler 13847 13848Implemented support to optionally generate include files for both 13849ASM and C (the -i switch). This simplifies BIOS development by 13850automatically creating include files that contain external 13851declarations for the symbols that are created within the 13852 13853(optionally generated) ASM and C AML source files. 13854 13855 13856---------------------------------------- 1385715 November 2002. Summary of changes for version 20021115. 13858 138591) ACPI CA Core Subsystem: 13860 13861Fixed a memory leak problem where an error during resolution of 13862 13863method arguments during a method invocation from another method 13864failed to cleanup properly by deleting all successfully resolved 13865argument objects. 13866 13867Fixed a problem where the target of the Index() operator was not 13868correctly constructed if the source object was a package. This 13869problem has not been detected because the use of a target operand 13870with Index() is very rare. 13871 13872Fixed a problem with the Index() operator where an attempt was 13873made to delete the operand objects twice. 13874 13875Fixed a problem where an attempt was made to delete an operand 13876twice during execution of the CondRefOf() operator if the target 13877did not exist. 13878 13879Implemented the first of perhaps several internal create object 13880functions that create and initialize a specific object type. This 13881consolidates duplicated code wherever the object is created, thus 13882shrinking the size of the subsystem. 13883 13884Implemented improved debug/error messages for errors that occur 13885during nested method invocations. All executing method pathnames 13886are displayed (with the error) as the call stack is unwound - thus 13887simplifying debug. 13888 13889Fixed a problem introduced in the 10/02 release that caused 13890premature deletion of a buffer object if a buffer was used as an 13891ASL operand where an integer operand is required (Thus causing an 13892implicit object conversion from Buffer to Integer.) The change in 13893the 10/02 release was attempting to fix a memory leak (albeit 13894incorrectly.) 13895 13896Code and Data Size: Current core subsystem library sizes are shown 13897below. These are the code and data sizes for the acpica.lib 13898produced by the Microsoft Visual C++ 6.0 compiler, and these 13899values do not include any ACPI driver or OSPM code. The debug 13900version of the code includes the debug output trace mechanism and 13901has a much larger code and data size. Note that these values will 13902vary depending on the efficiency of the compiler and the compiler 13903options used during generation. 13904 13905 Previous Release 13906 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 13907 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 13908 Current Release: 13909 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 13910 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 13911 13912 139132) Linux 13914 13915Changed the implementation of the ACPI semaphores to use down() 13916instead of down_interruptable(). It is important that the 13917execution of ACPI control methods not be interrupted by signals. 13918Methods must run to completion, or the system may be left in an 13919unknown/unstable state. 13920 13921Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set. 13922(Shawn Starr) 13923 13924 139253) iASL Compiler/Disassembler 13926 13927 13928Changed the default location of output files. All output files 13929are now placed in the current directory by default instead of in 13930the directory of the source file. This change may affect some 13931existing makefiles, but it brings the behavior of the compiler in 13932line with other similar tools. The location of the output files 13933can be overridden with the -p command line switch. 13934 13935 13936---------------------------------------- 1393711 November 2002. Summary of changes for version 20021111. 13938 13939 139400) ACPI Specification 2.0B is released and is now available at: 13941http://www.acpi.info/index.html 13942 13943 139441) ACPI CA Core Subsystem: 13945 13946Implemented support for the ACPI 2.0 SMBus Operation Regions. 13947This includes the early detection and handoff of the request to 13948the SMBus region handler (avoiding all of the complex field 13949support code), and support for the bidirectional return packet 13950from an SMBus write operation. This paves the way for the 13951development of SMBus drivers in each host operating system. 13952 13953Fixed a problem where the semaphore WAIT_FOREVER constant was 13954defined as 32 bits, but must be 16 bits according to the ACPI 13955specification. This had the side effect of causing ASL 13956Mutex/Event timeouts even though the ASL code requested a wait 13957forever. Changed all internal references to the ACPI timeout 13958parameter to 16 bits to prevent future problems. Changed the name 13959of WAIT_FOREVER to ACPI_WAIT_FOREVER. 13960 13961Code and Data Size: Current core subsystem library sizes are shown 13962below. These are the code and data sizes for the acpica.lib 13963produced by the Microsoft Visual C++ 6.0 compiler, and these 13964values do not include any ACPI driver or OSPM code. The debug 13965version of the code includes the debug output trace mechanism and 13966has a much larger code and data size. Note that these values will 13967vary depending on the efficiency of the compiler and the compiler 13968options used during generation. 13969 13970 Previous Release 13971 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 13972 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 13973 Current Release: 13974 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 13975 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 13976 13977 139782) Linux 13979 13980Module loading/unloading fixes (John Cagle) 13981 13982 139833) iASL Compiler/Disassembler 13984 13985Added support for the SMBBlockProcessCall keyword (ACPI 2.0) 13986 13987Implemented support for the disassembly of all SMBus protocol 13988keywords (SMBQuick, SMBWord, etc.) 13989 13990---------------------------------------- 1399101 November 2002. Summary of changes for version 20021101. 13992 13993 139941) ACPI CA Core Subsystem: 13995 13996Fixed a problem where platforms that have a GPE1 block but no GPE0 13997block were not handled correctly. This resulted in a "GPE 13998overlap" error message. GPE0 is no longer required. 13999 14000Removed code added in the previous release that inserted nodes 14001into the namespace in alphabetical order. This caused some side- 14002effects on various machines. The root cause of the problem is 14003still under investigation since in theory, the internal ordering 14004of the namespace nodes should not matter. 14005 14006 14007Enhanced error reporting for the case where a named object is not 14008found during control method execution. The full ACPI namepath 14009(name reference) of the object that was not found is displayed in 14010this case. 14011 14012Note: as a result of the overhaul of the namespace object types in 14013the previous release, the namespace nodes for the predefined 14014scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE 14015instead of ACPI_TYPE_ANY. This simplifies the namespace 14016management code but may affect code that walks the namespace tree 14017looking for specific object types. 14018 14019Code and Data Size: Current core subsystem library sizes are shown 14020below. These are the code and data sizes for the acpica.lib 14021produced by the Microsoft Visual C++ 6.0 compiler, and these 14022values do not include any ACPI driver or OSPM code. The debug 14023version of the code includes the debug output trace mechanism and 14024has a much larger code and data size. Note that these values will 14025vary depending on the efficiency of the compiler and the compiler 14026options used during generation. 14027 14028 Previous Release 14029 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 14030 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 14031 Current Release: 14032 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 14033 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 14034 14035 140362) Linux 14037 14038Fixed a problem introduced in the previous release where the 14039Processor and Thermal objects were not recognized and installed in 14040/proc. This was related to the scope type change described above. 14041 14042 140433) iASL Compiler/Disassembler 14044 14045Implemented the -g option to get all of the required ACPI tables 14046from the registry and save them to files (Windows version of the 14047compiler only.) The required tables are the FADT, FACS, and DSDT. 14048 14049Added ACPI table checksum validation during table disassembly in 14050order to catch corrupted tables. 14051 14052 14053---------------------------------------- 1405422 October 2002. Summary of changes for version 20021022. 14055 140561) ACPI CA Core Subsystem: 14057 14058Implemented a restriction on the Scope operator that the target 14059must already exist in the namespace at the time the operator is 14060encountered (during table load or method execution). In other 14061words, forward references are not allowed and Scope() cannot 14062create a new object. This changes the previous behavior where the 14063interpreter would create the name if not found. This new behavior 14064correctly enables the search-to-root algorithm during namespace 14065lookup of the target name. Because of this upsearch, this fixes 14066the known Compaq _SB_.OKEC problem and makes both the AML 14067interpreter and iASL compiler compatible with other ACPI 14068implementations. 14069 14070Completed a major overhaul of the internal ACPI object types for 14071the ACPI Namespace and the associated operand objects. Many of 14072these types had become obsolete with the introduction of the two- 14073pass namespace load. This cleanup simplifies the code and makes 14074the entire namespace load mechanism much clearer and easier to 14075understand. 14076 14077Improved debug output for tracking scope opening/closing to help 14078diagnose scoping issues. The old scope name as well as the new 14079scope name are displayed. Also improved error messages for 14080problems with ASL Mutex objects and error messages for GPE 14081problems. 14082 14083Cleaned up the namespace dump code, removed obsolete code. 14084 14085All string output (for all namespace/object dumps) now uses the 14086common ACPI string output procedure which handles escapes properly 14087and does not emit non-printable characters. 14088 14089Fixed some issues with constants in the 64-bit version of the 14090local C library (utclib.c) 14091 14092 140932) Linux 14094 14095EC Driver: No longer attempts to acquire the Global Lock at 14096interrupt level. 14097 14098 140993) iASL Compiler/Disassembler 14100 14101Implemented ACPI 2.0B grammar change that disallows all Type 1 and 141022 opcodes outside of a control method. This means that the 14103"executable" operators (versus the "namespace" operators) cannot 14104be used at the table level; they can only be used within a control 14105method. 14106 14107Implemented the restriction on the Scope() operator where the 14108target must already exist in the namespace at the time the 14109operator is encountered (during ASL compilation). In other words, 14110forward references are not allowed and Scope() cannot create a new 14111object. This makes the iASL compiler compatible with other ACPI 14112implementations and makes the Scope() implementation adhere to the 14113ACPI specification. 14114 14115Fixed a problem where namepath optimization for the Alias operator 14116was optimizing the wrong path (of the two namepaths.) This caused 14117a "Missing alias link" error message. 14118 14119Fixed a problem where an "unknown reserved name" warning could be 14120incorrectly generated for names like "_SB" when the trailing 14121underscore is not used in the original ASL. 14122 14123Fixed a problem where the reserved name check did not handle 14124NamePaths with multiple NameSegs correctly. The first nameseg of 14125the NamePath was examined instead of the last NameSeg. 14126 14127 14128---------------------------------------- 14129 1413002 October 2002. Summary of changes for this release. 14131 14132 141331) ACPI CA Core Subsystem version 20021002: 14134 14135Fixed a problem where a store/copy of a string to an existing 14136string did not always set the string length properly in the String 14137object. 14138 14139Fixed a reported problem with the ToString operator where the 14140behavior was identical to the ToHexString operator instead of just 14141simply converting a raw buffer to a string data type. 14142 14143Fixed a problem where CopyObject and the other "explicit" 14144conversion operators were not updating the internal namespace node 14145type as part of the store operation. 14146 14147Fixed a memory leak during implicit source operand conversion 14148where the original object was not deleted if it was converted to a 14149new object of a different type. 14150 14151Enhanced error messages for all problems associated with namespace 14152lookups. Common procedure generates and prints the lookup name as 14153well as the formatted status. 14154 14155Completed implementation of a new design for the Alias support 14156within the namespace. The existing design did not handle the case 14157where a new object was assigned to one of the two names due to the 14158use of an explicit conversion operator, resulting in the two names 14159pointing to two different objects. The new design simply points 14160the Alias name to the original name node - not to the object. 14161This results in a level of indirection that must be handled in the 14162name resolution mechanism. 14163 14164Code and Data Size: Current core subsystem library sizes are shown 14165below. These are the code and data sizes for the acpica.lib 14166produced by the Microsoft Visual C++ 6.0 compiler, and these 14167values do not include any ACPI driver or OSPM code. The debug 14168version of the code includes the debug output trace mechanism and 14169has a larger code and data size. Note that these values will vary 14170depending on the efficiency of the compiler and the compiler 14171options used during generation. 14172 14173 Previous Release 14174 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 14175 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 14176 Current Release: 14177 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 14178 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 14179 14180 141812) Linux 14182 14183Initialize thermal driver's timer before it is used. (Knut 14184Neumann) 14185 14186Allow handling negative celsius values. (Kochi Takayoshi) 14187 14188Fix thermal management and make trip points. R/W (Pavel Machek) 14189 14190Fix /proc/acpi/sleep. (P. Christeas) 14191 14192IA64 fixes. (David Mosberger) 14193 14194Fix reversed logic in blacklist code. (Sergio Monteiro Basto) 14195 14196Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik 14197Brodowski) 14198 14199 142003) iASL Compiler/Disassembler 14201 14202Clarified some warning/error messages. 14203 14204 14205---------------------------------------- 1420618 September 2002. Summary of changes for this release. 14207 14208 142091) ACPI CA Core Subsystem version 20020918: 14210 14211Fixed a reported problem with reference chaining (via the Index() 14212and RefOf() operators) in the ObjectType() and SizeOf() operators. 14213The definition of these operators includes the dereferencing of 14214all chained references to return information on the base object. 14215 14216Fixed a problem with stores to indexed package elements - the 14217existing code would not complete the store if an "implicit 14218conversion" was not performed. In other words, if the existing 14219object (package element) was to be replaced completely, the code 14220didn't handle this case. 14221 14222Relaxed typechecking on the ASL "Scope" operator to allow the 14223target name to refer to an object of type Integer, String, or 14224Buffer, in addition to the scoping object types (Device, 14225predefined Scopes, Processor, PowerResource, and ThermalZone.) 14226This allows existing AML code that has workarounds for a bug in 14227Windows to function properly. A warning is issued, however. This 14228affects both the AML interpreter and the iASL compiler. Below is 14229an example of this type of ASL code: 14230 14231 Name(DEB,0x00) 14232 Scope(DEB) 14233 { 14234 14235Fixed some reported problems with 64-bit integer support in the 14236local implementation of C library functions (clib.c) 14237 14238 142392) Linux 14240 14241Use ACPI fix map region instead of IOAPIC region, since it is 14242undefined in non-SMP. 14243 14244Ensure that the SCI has the proper polarity and trigger, even on 14245systems that do not have an interrupt override entry in the MADT. 14246 142472.5 big driver reorganization (Pat Mochel) 14248 14249Use early table mapping code from acpitable.c (Andi Kleen) 14250 14251New blacklist entries (Andi Kleen) 14252 14253Blacklist improvements. Split blacklist code out into a separate 14254file. Move checking the blacklist to very early. Previously, we 14255would use ACPI tables, and then halfway through init, check the 14256blacklist -- too late. Now, it's early enough to completely fall- 14257back to non-ACPI. 14258 14259 142603) iASL Compiler/Disassembler version 20020918: 14261 14262Fixed a problem where the typechecking code didn't know that an 14263alias could point to a method. In other words, aliases were not 14264being dereferenced during typechecking. 14265 14266 14267---------------------------------------- 1426829 August 2002. Summary of changes for this release. 14269 142701) ACPI CA Core Subsystem Version 20020829: 14271 14272If the target of a Scope() operator already exists, it must be an 14273object type that actually opens a scope -- such as a Device, 14274Method, Scope, etc. This is a fatal runtime error. Similar error 14275check has been added to the iASL compiler also. 14276 14277Tightened up the namespace load to disallow multiple names in the 14278same scope. This previously was allowed if both objects were of 14279the same type. (i.e., a lookup was the same as entering a new 14280name). 14281 14282 142832) Linux 14284 14285Ensure that the ACPI interrupt has the proper trigger and 14286polarity. 14287 14288local_irq_disable is extraneous. (Matthew Wilcox) 14289 14290Make "acpi=off" actually do what it says, and not use the ACPI 14291interpreter *or* the tables. 14292 14293Added arch-neutral support for parsing SLIT and SRAT tables (Kochi 14294Takayoshi) 14295 14296 142973) iASL Compiler/Disassembler Version 20020829: 14298 14299Implemented namepath optimization for name declarations. For 14300example, a declaration like "Method (\_SB_.ABCD)" would get 14301optimized to "Method (ABCD)" if the declaration is within the 14302\_SB_ scope. This optimization is in addition to the named 14303reference path optimization first released in the previous 14304version. This would seem to complete all possible optimizations 14305for namepaths within the ASL/AML. 14306 14307If the target of a Scope() operator already exists, it must be an 14308object type that actually opens a scope -- such as a Device, 14309Method, Scope, etc. 14310 14311Implemented a check and warning for unreachable code in the same 14312block below a Return() statement. 14313 14314Fixed a problem where the listing file was not generated if the 14315compiler aborted if the maximum error count was exceeded (200). 14316 14317Fixed a problem where the typechecking of method return values was 14318broken. This includes the check for a return value when the 14319method is invoked as a TermArg (a return value is expected.) 14320 14321Fixed a reported problem where EOF conditions during a quoted 14322string or comment caused a fault. 14323 14324 14325---------------------------------------- 1432615 August 2002. Summary of changes for this release. 14327 143281) ACPI CA Core Subsystem Version 20020815: 14329 14330Fixed a reported problem where a Store to a method argument that 14331contains a reference did not perform the indirect store correctly. 14332This problem was created during the conversion to the new 14333reference object model - the indirect store to a method argument 14334code was not updated to reflect the new model. 14335 14336Reworked the ACPI mode change code to better conform to ACPI 2.0, 14337handle corner cases, and improve code legibility (Kochi Takayoshi) 14338 14339Fixed a problem with the pathname parsing for the carat (^) 14340prefix. The heavy use of the carat operator by the new namepath 14341optimization in the iASL compiler uncovered a problem with the AML 14342interpreter handling of this prefix. In the case where one or 14343more carats precede a single nameseg, the nameseg was treated as 14344standalone and the search rule (to root) was inadvertently 14345applied. This could cause both the iASL compiler and the 14346interpreter to find the wrong object or to miss the error that 14347should occur if the object does not exist at that exact pathname. 14348 14349Found and fixed the problem where the HP Pavilion DSDT would not 14350load. This was a relatively minor tweak to the table loading code 14351(a problem caused by the unexpected encounter with a method 14352invocation not within a control method), but it does not solve the 14353overall issue of the execution of AML code at the table level. 14354This investigation is still ongoing. 14355 14356Code and Data Size: Current core subsystem library sizes are shown 14357below. These are the code and data sizes for the acpica.lib 14358produced by the Microsoft Visual C++ 6.0 compiler, and these 14359values do not include any ACPI driver or OSPM code. The debug 14360version of the code includes the debug output trace mechanism and 14361has a larger code and data size. Note that these values will vary 14362depending on the efficiency of the compiler and the compiler 14363options used during generation. 14364 14365 Previous Release 14366 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 14367 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 14368 Current Release: 14369 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 14370 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 14371 14372 143732) Linux 14374 14375Remove redundant slab.h include (Brad Hards) 14376 14377Fix several bugs in thermal.c (Herbert Nachtnebel) 14378 14379Make CONFIG_ACPI_BOOT work properly (Pavel Machek) 14380 14381Change acpi_system_suspend to use updated irq functions (Pavel 14382Machek) 14383 14384Export acpi_get_firmware_table (Matthew Wilcox) 14385 14386Use proper root proc entry for ACPI (Kochi Takayoshi) 14387 14388Fix early-boot table parsing (Bjorn Helgaas) 14389 14390 143913) iASL Compiler/Disassembler 14392 14393Reworked the compiler options to make them more consistent and to 14394use two-letter options where appropriate. We were running out of 14395sensible letters. This may break some makefiles, so check the 14396current options list by invoking the compiler with no parameters. 14397 14398Completed the design and implementation of the ASL namepath 14399optimization option for the compiler. This option optimizes all 14400references to named objects to the shortest possible path. The 14401first attempt tries to utilize a single nameseg (4 characters) and 14402the "search-to-root" algorithm used by the interpreter. If that 14403cannot be used (because either the name is not in the search path 14404or there is a conflict with another object with the same name), 14405the pathname is optimized using the carat prefix (usually a 14406shorter string than specifying the entire path from the root.) 14407 14408Implemented support to obtain the DSDT from the Windows registry 14409(when the disassembly option is specified with no input file). 14410Added this code as the implementation for AcpiOsTableOverride in 14411the Windows OSL. Migrated the 16-bit code (used in the AcpiDump 14412utility) to scan memory for the DSDT to the AcpiOsTableOverride 14413function in the DOS OSL to make the disassembler truly OS 14414independent. 14415 14416Implemented a new option to disassemble and compile in one step. 14417When used without an input filename, this option will grab the 14418DSDT from the local machine, disassemble it, and compile it in one 14419step. 14420 14421Added a warning message for invalid escapes (a backslash followed 14422by any character other than the allowable escapes). This catches 14423the quoted string error "\_SB_" (which should be "\\_SB_" ). 14424 14425Also, there are numerous instances in the ACPI specification where 14426this error occurs. 14427 14428Added a compiler option to disable all optimizations. This is 14429basically the "compatibility mode" because by using this option, 14430the AML code will come out exactly the same as other ASL 14431compilers. 14432 14433Added error messages for incorrectly ordered dependent resource 14434functions. This includes: missing EndDependentFn macro at end of 14435dependent resource list, nested dependent function macros (both 14436start and end), and missing StartDependentFn macro. These are 14437common errors that should be caught at compile time. 14438 14439Implemented _OSI support for the disassembler and compiler. _OSI 14440must be included in the namespace for proper disassembly (because 14441the disassembler must know the number of arguments.) 14442 14443Added an "optimization" message type that is optional (off by 14444default). This message is used for all optimizations - including 14445constant folding, integer optimization, and namepath optimization. 14446 14447---------------------------------------- 1444825 July 2002. Summary of changes for this release. 14449 14450 144511) ACPI CA Core Subsystem Version 20020725: 14452 14453The AML Disassembler has been enhanced to produce compilable ASL 14454code and has been integrated into the iASL compiler (see below) as 14455well as the single-step disassembly for the AML debugger and the 14456disassembler for the AcpiDump utility. All ACPI 2.0A opcodes, 14457resource templates and macros are fully supported. The 14458disassembler has been tested on over 30 different AML files, 14459producing identical AML when the resulting disassembled ASL file 14460is recompiled with the same ASL compiler. 14461 14462Modified the Resource Manager to allow zero interrupts and zero 14463dma channels during the GetCurrentResources call. This was 14464causing problems on some platforms. 14465 14466Added the AcpiOsRedirectOutput interface to the OSL to simplify 14467output redirection for the AcpiOsPrintf and AcpiOsVprintf 14468interfaces. 14469 14470Code and Data Size: Current core subsystem library sizes are shown 14471below. These are the code and data sizes for the acpica.lib 14472produced by the Microsoft Visual C++ 6.0 compiler, and these 14473values do not include any ACPI driver or OSPM code. The debug 14474version of the code includes the debug output trace mechanism and 14475has a larger code and data size. Note that these values will vary 14476depending on the efficiency of the compiler and the compiler 14477options used during generation. 14478 14479 Previous Release 14480 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 14481 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 14482 Current Release: 14483 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 14484 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 14485 14486 144872) Linux 14488 14489Fixed a panic in the EC driver (Dominik Brodowski) 14490 14491Implemented checksum of the R/XSDT itself during Linux table scan 14492(Richard Schaal) 14493 14494 144953) iASL compiler 14496 14497The AML disassembler is integrated into the compiler. The "-d" 14498option invokes the disassembler to completely disassemble an 14499input AML file, producing as output a text ASL file with the 14500extension ".dsl" (to avoid name collisions with existing .asl 14501source files.) A future enhancement will allow the disassembler 14502to obtain the BIOS DSDT from the registry under Windows. 14503 14504Fixed a problem with the VendorShort and VendorLong resource 14505descriptors where an invalid AML sequence was created. 14506 14507Implemented a fix for BufferData term in the ASL parser. It was 14508inadvertently defined twice, allowing invalid syntax to pass and 14509causing reduction conflicts. 14510 14511Fixed a problem where the Ones opcode could get converted to a 14512value of zero if "Ones" was used where a byte, word or dword value 14513was expected. The 64-bit value is now truncated to the correct 14514size with the correct value. 14515 14516 14517 14518---------------------------------------- 1451902 July 2002. Summary of changes for this release. 14520 14521 145221) ACPI CA Core Subsystem Version 20020702: 14523 14524The Table Manager code has been restructured to add several new 14525features. Tables that are not required by the core subsystem 14526(other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer 14527validated in any way and are returned from AcpiGetFirmwareTable if 14528requested. The AcpiOsTableOverride interface is now called for 14529each table that is loaded by the subsystem in order to allow the 14530host to override any table it chooses. Previously, only the DSDT 14531could be overridden. Added one new files, tbrsdt.c and 14532tbgetall.c. 14533 14534Fixed a problem with the conversion of internal package objects to 14535external objects (when a package is returned from a control 14536method.) The return buffer length was set to zero instead of the 14537proper length of the package object. 14538 14539Fixed a reported problem with the use of the RefOf and DeRefOf 14540operators when passing reference arguments to control methods. A 14541new type of Reference object is used internally for references 14542produced by the RefOf operator. 14543 14544Added additional error messages in the Resource Manager to explain 14545AE_BAD_DATA errors when they occur during resource parsing. 14546 14547Split the AcpiEnableSubsystem into two primitives to enable a 14548finer granularity initialization sequence. These two calls should 14549be called in this order: AcpiEnableSubsystem (flags), 14550AcpiInitializeObjects (flags). The flags parameter remains the 14551same. 14552 14553 145542) Linux 14555 14556Updated the ACPI utilities module to understand the new style of 14557fully resolved package objects that are now returned from the core 14558subsystem. This eliminates errors of the form: 14559 14560 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT] 14561 acpi_utils-0430 [145] acpi_evaluate_reference: 14562 Invalid element in package (not a device reference) 14563 14564The method evaluation utility uses the new buffer allocation 14565scheme instead of calling AcpiEvaluate Object twice. 14566 14567Added support for ECDT. This allows the use of the Embedded 14568 14569Controller before the namespace has been fully initialized, which 14570is necessary for ACPI 2.0 support, and for some laptops to 14571initialize properly. (Laptops using ECDT are still rare, so only 14572limited testing was performed of the added functionality.) 14573 14574Fixed memory leaks in the EC driver. 14575 14576Eliminated a brittle code structure in acpi_bus_init(). 14577 14578Eliminated the acpi_evaluate() helper function in utils.c. It is 14579no longer needed since acpi_evaluate_object can optionally 14580allocate memory for the return object. 14581 14582Implemented fix for keyboard hang when getting battery readings on 14583some systems (Stephen White) 14584 14585PCI IRQ routing update (Dominik Brodowski) 14586 14587Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC 14588support 14589 14590---------------------------------------- 1459111 June 2002. Summary of changes for this release. 14592 14593 145941) ACPI CA Core Subsystem Version 20020611: 14595 14596Fixed a reported problem where constants such as Zero and One 14597appearing within _PRT packages were not handled correctly within 14598the resource manager code. Originally reported against the ASL 14599compiler because the code generator now optimizes integers to 14600their minimal AML representation (i.e. AML constants if possible.) 14601The _PRT code now handles all AML constant opcodes correctly 14602(Zero, One, Ones, Revision). 14603 14604Fixed a problem with the Concatenate operator in the AML 14605interpreter where a buffer result object was incorrectly marked as 14606not fully evaluated, causing a run-time error of AE_AML_INTERNAL. 14607 14608All package sub-objects are now fully resolved before they are 14609returned from the external ACPI interfaces. This means that name 14610strings are resolved to object handles, and constant operators 14611(Zero, One, Ones, Revision) are resolved to Integers. 14612 14613Implemented immediate resolution of the AML Constant opcodes 14614(Zero, One, Ones, Revision) to Integer objects upon detection 14615within the AML stream. This has simplified and reduced the 14616generated code size of the subsystem by eliminating about 10 14617switch statements for these constants (which previously were 14618contained in Reference objects.) The complicating issues are that 14619the Zero opcode is used as a "placeholder" for unspecified 14620optional target operands and stores to constants are defined to be 14621no-ops. 14622 14623Code and Data Size: Current core subsystem library sizes are shown 14624below. These are the code and data sizes for the acpica.lib 14625produced by the Microsoft Visual C++ 6.0 compiler, and these 14626values do not include any ACPI driver or OSPM code. The debug 14627version of the code includes the debug output trace mechanism and 14628has a larger code and data size. Note that these values will vary 14629depending on the efficiency of the compiler and the compiler 14630options used during generation. 14631 14632 Previous Release 14633 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 14634 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 14635 Current Release: 14636 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 14637 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 14638 14639 146402) Linux 14641 14642 14643Added preliminary support for obtaining _TRA data for PCI root 14644bridges (Bjorn Helgaas). 14645 14646 146473) iASL Compiler Version X2046: 14648 14649Fixed a problem where the "_DDN" reserved name was defined to be a 14650control method with one argument. There are no arguments, and 14651_DDN does not have to be a control method. 14652 14653Fixed a problem with the Linux version of the compiler where the 14654source lines printed with error messages were the wrong lines. 14655This turned out to be the "LF versus CR/LF" difference between 14656Windows and Unix. This appears to be the longstanding issue 14657concerning listing output and error messages. 14658 14659Fixed a problem with the Linux version of compiler where opcode 14660names within error messages were wrong. This was caused by a 14661slight difference in the output of the Flex tool on Linux versus 14662Windows. 14663 14664Fixed a problem with the Linux compiler where the hex output files 14665contained some garbage data caused by an internal buffer overrun. 14666 14667 14668---------------------------------------- 1466917 May 2002. Summary of changes for this release. 14670 14671 146721) ACPI CA Core Subsystem Version 20020517: 14673 14674Implemented a workaround to an BIOS bug discovered on the HP 14675OmniBook where the FADT revision number and the table size are 14676inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new 14677behavior is to fallback to using only the ACPI 1.0 fields of the 14678FADT if the table is too small to be a ACPI 2.0 table as claimed 14679by the revision number. Although this is a BIOS bug, this is a 14680case where the workaround is simple enough and with no side 14681effects, so it seemed prudent to add it. A warning message is 14682issued, however. 14683 14684Implemented minimum size checks for the fixed-length ACPI tables - 14685- the FADT and FACS, as well as consistency checks between the 14686revision number and the table size. 14687 14688Fixed a reported problem in the table override support where the 14689new table pointer was incorrectly treated as a physical address 14690instead of a logical address. 14691 14692Eliminated the use of the AE_AML_ERROR exception and replaced it 14693with more descriptive codes. 14694 14695Fixed a problem where an exception would occur if an ASL Field was 14696defined with no named Field Units underneath it (used by some 14697index fields). 14698 14699Code and Data Size: Current core subsystem library sizes are shown 14700below. These are the code and data sizes for the acpica.lib 14701produced by the Microsoft Visual C++ 6.0 compiler, and these 14702values do not include any ACPI driver or OSPM code. The debug 14703version of the code includes the debug output trace mechanism and 14704has a larger code and data size. Note that these values will vary 14705depending on the efficiency of the compiler and the compiler 14706options used during generation. 14707 14708 Previous Release 14709 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 14710 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 14711 Current Release: 14712 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 14713 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 14714 14715 14716 147172) Linux 14718 14719Much work done on ACPI init (MADT and PCI IRQ routing support). 14720(Paul D. and Dominik Brodowski) 14721 14722Fix PCI IRQ-related panic on boot (Sam Revitch) 14723 14724Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno) 14725 14726Fix "MHz" typo (Dominik Brodowski) 14727 14728Fix RTC year 2000 issue (Dominik Brodowski) 14729 14730Preclude multiple button proc entries (Eric Brunet) 14731 14732Moved arch-specific code out of include/platform/aclinux.h 14733 147343) iASL Compiler Version X2044: 14735 14736Implemented error checking for the string used in the EISAID macro 14737(Usually used in the definition of the _HID object.) The code now 14738strictly enforces the PnP format - exactly 7 characters, 3 14739uppercase letters and 4 hex digits. 14740 14741If a raw string is used in the definition of the _HID object 14742(instead of the EISAID macro), the string must contain all 14743alphanumeric characters (e.g., "*PNP0011" is not allowed because 14744of the asterisk.) 14745 14746Implemented checking for invalid use of ACPI reserved names for 14747most of the name creation operators (Name, Device, Event, Mutex, 14748OperationRegion, PowerResource, Processor, and ThermalZone.) 14749Previously, this check was only performed for control methods. 14750 14751Implemented an additional check on the Name operator to emit an 14752error if a reserved name that must be implemented in ASL as a 14753control method is used. We know that a reserved name must be a 14754method if it is defined with input arguments. 14755 14756The warning emitted when a namespace object reference is not found 14757during the cross reference phase has been changed into an error. 14758The "External" directive should be used for names defined in other 14759modules. 14760 14761 147624) Tools and Utilities 14763 14764The 16-bit tools (adump16 and aexec16) have been regenerated and 14765tested. 14766 14767Fixed a problem with the output of both acpidump and adump16 where 14768the indentation of closing parentheses and brackets was not 14769 14770aligned properly with the parent block. 14771 14772 14773---------------------------------------- 1477403 May 2002. Summary of changes for this release. 14775 14776 147771) ACPI CA Core Subsystem Version 20020503: 14778 14779Added support a new OSL interface that allows the host operating 14780 14781system software to override the DSDT found in the firmware - 14782AcpiOsTableOverride. With this interface, the OSL can examine the 14783version of the firmware DSDT and replace it with a different one 14784if desired. 14785 14786Added new external interfaces for accessing ACPI registers from 14787device drivers and other system software - AcpiGetRegister and 14788AcpiSetRegister. This was simply an externalization of the 14789existing AcpiHwBitRegister interfaces. 14790 14791Fixed a regression introduced in the previous build where the 14792ASL/AML CreateField operator always returned an error, 14793"destination must be a NS Node". 14794 14795Extended the maximum time (before failure) to successfully enable 14796ACPI mode to 3 seconds. 14797 14798Code and Data Size: Current core subsystem library sizes are shown 14799below. These are the code and data sizes for the acpica.lib 14800produced by the Microsoft Visual C++ 6.0 compiler, and these 14801values do not include any ACPI driver or OSPM code. The debug 14802version of the code includes the debug output trace mechanism and 14803has a larger code and data size. Note that these values will vary 14804depending on the efficiency of the compiler and the compiler 14805options used during generation. 14806 14807 Previous Release 14808 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 14809 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 14810 Current Release: 14811 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 14812 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 14813 14814 148152) Linux 14816 14817Enhanced ACPI init code for SMP. We are now fully MPS and $PIR- 14818free. While 3 out of 4 of our in-house systems work fine, the last 14819one still hangs when testing the LAPIC timer. 14820 14821Renamed many files in 2.5 kernel release to omit "acpi_" from the 14822name. 14823 14824Added warning on boot for Presario 711FR. 14825 14826Sleep improvements (Pavel Machek) 14827 14828ACPI can now be built without CONFIG_PCI enabled. 14829 14830IA64: Fixed memory map functions (JI Lee) 14831 14832 148333) iASL Compiler Version X2043: 14834 14835Added support to allow the compiler to be integrated into the MS 14836VC++ development environment for one-button compilation of single 14837files or entire projects -- with error-to-source-line mapping. 14838 14839Implemented support for compile-time constant folding for the 14840Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0 14841specification. This allows the ASL writer to use expressions 14842instead of Integer/Buffer/String constants in terms that must 14843evaluate to constants at compile time and will also simplify the 14844emitted AML in any such sub-expressions that can be folded 14845(evaluated at compile-time.) This increases the size of the 14846compiler significantly because a portion of the ACPI CA AML 14847interpreter is included within the compiler in order to pre- 14848evaluate constant expressions. 14849 14850 14851Fixed a problem with the "Unicode" ASL macro that caused the 14852compiler to fault. (This macro is used in conjunction with the 14853_STR reserved name.) 14854 14855Implemented an AML opcode optimization to use the Zero, One, and 14856Ones opcodes where possible to further reduce the size of integer 14857constants and thus reduce the overall size of the generated AML 14858code. 14859 14860Implemented error checking for new reserved terms for ACPI version 148612.0A. 14862 14863Implemented the -qr option to display the current list of ACPI 14864reserved names known to the compiler. 14865 14866Implemented the -qc option to display the current list of ASL 14867operators that are allowed within constant expressions and can 14868therefore be folded at compile time if the operands are constants. 14869 14870 148714) Documentation 14872 14873Updated the Programmer's Reference for new interfaces, data types, 14874and memory allocation model options. 14875 14876Updated the iASL Compiler User Reference to apply new format and 14877add information about new features and options. 14878 14879---------------------------------------- 1488019 April 2002. Summary of changes for this release. 14881 148821) ACPI CA Core Subsystem Version 20020419: 14883 14884The source code base for the Core Subsystem has been completely 14885cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit 14886versions. The Lint option files used are included in the 14887/acpi/generate/lint directory. 14888 14889Implemented enhanced status/error checking across the entire 14890Hardware manager subsystem. Any hardware errors (reported from 14891the OSL) are now bubbled up and will abort a running control 14892method. 14893 14894 14895Fixed a problem where the per-ACPI-table integer width (32 or 64) 14896was stored only with control method nodes, causing a fault when 14897non-control method code was executed during table loading. The 14898solution implemented uses a global variable to indicate table 14899width across the entire ACPI subsystem. Therefore, ACPI CA does 14900not support mixed integer widths across different ACPI tables 14901(DSDT, SSDT). 14902 14903Fixed a problem where NULL extended fields (X fields) in an ACPI 149042.0 ACPI FADT caused the table load to fail. Although the 14905existing ACPI specification is a bit fuzzy on this topic, the new 14906behavior is to fall back on a ACPI 1.0 field if the corresponding 14907ACPI 2.0 X field is zero (even though the table revision indicates 14908a full ACPI 2.0 table.) The ACPI specification will be updated to 14909clarify this issue. 14910 14911Fixed a problem with the SystemMemory operation region handler 14912where memory was always accessed byte-wise even if the AML- 14913specified access width was larger than a byte. This caused 14914problems on systems with memory-mapped I/O. Memory is now 14915accessed with the width specified. On systems that do not support 14916non-aligned transfers, a check is made to guarantee proper address 14917alignment before proceeding in order to avoid an AML-caused 14918alignment fault within the kernel. 14919 14920 14921Fixed a problem with the ExtendedIrq resource where only one byte 14922of the 4-byte Irq field was extracted. 14923 14924Fixed the AcpiExDigitsNeeded() procedure to support _UID. This 14925function was out of date and required a rewrite. 14926 14927Code and Data Size: Current core subsystem library sizes are shown 14928below. These are the code and data sizes for the acpica.lib 14929produced by the Microsoft Visual C++ 6.0 compiler, and these 14930values do not include any ACPI driver or OSPM code. The debug 14931version of the code includes the debug output trace mechanism and 14932has a larger code and data size. Note that these values will vary 14933depending on the efficiency of the compiler and the compiler 14934options used during generation. 14935 14936 Previous Release 14937 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 14938 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 14939 Current Release: 14940 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 14941 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 14942 14943 149442) Linux 14945 14946PCI IRQ routing fixes (Dominik Brodowski) 14947 14948 149493) iASL Compiler Version X2042: 14950 14951Implemented an additional compile-time error check for a field 14952unit whose size + minimum access width would cause a run-time 14953access beyond the end-of-region. Previously, only the field size 14954itself was checked. 14955 14956The Core subsystem and iASL compiler now share a common parse 14957object in preparation for compile-time evaluation of the type 149583/4/5 ASL operators. 14959 14960 14961---------------------------------------- 14962Summary of changes for this release: 03_29_02 14963 149641) ACPI CA Core Subsystem Version 20020329: 14965 14966Implemented support for late evaluation of TermArg operands to 14967Buffer and Package objects. This allows complex expressions to be 14968used in the declarations of these object types. 14969 14970Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI 149711.0, if the field was larger than 32 bits, it was returned as a 14972buffer - otherwise it was returned as an integer. In ACPI 2.0, 14973the field is returned as a buffer only if the field is larger than 1497464 bits. The TableRevision is now considered when making this 14975conversion to avoid incompatibility with existing ASL code. 14976 14977Implemented logical addressing for AcpiOsGetRootPointer. This 14978allows an RSDP with either a logical or physical address. With 14979this support, the host OS can now override all ACPI tables with 14980one logical RSDP. Includes implementation of "typed" pointer 14981support to allow a common data type for both physical and logical 14982pointers internally. This required a change to the 14983AcpiOsGetRootPointer interface. 14984 14985Implemented the use of ACPI 2.0 Generic Address Structures for all 14986GPE, Fixed Event, and PM Timer I/O. This allows the use of memory 14987mapped I/O for these ACPI features. 14988 14989Initialization now ignores not only non-required tables (All 14990tables other than the FADT, FACS, DSDT, and SSDTs), but also does 14991not validate the table headers of unrecognized tables. 14992 14993Fixed a problem where a notify handler could only be 14994installed/removed on an object of type Device. All "notify" 14995 14996objects are now supported -- Devices, Processor, Power, and 14997Thermal. 14998 14999Removed most verbosity from the ACPI_DB_INFO debug level. Only 15000critical information is returned when this debug level is enabled. 15001 15002Code and Data Size: Current core subsystem library sizes are shown 15003below. These are the code and data sizes for the acpica.lib 15004produced by the Microsoft Visual C++ 6.0 compiler, and these 15005values do not include any ACPI driver or OSPM code. The debug 15006version of the code includes the debug output trace mechanism and 15007has a larger code and data size. Note that these values will vary 15008depending on the efficiency of the compiler and the compiler 15009options used during generation. 15010 15011 Previous Release 15012 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 15013 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 15014 Current Release: 15015 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 15016 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 15017 15018 150192) Linux: 15020 15021The processor driver (acpi_processor.c) now fully supports ACPI 150222.0-based processor performance control (e.g. Intel(R) 15023SpeedStep(TM) technology) Note that older laptops that only have 15024the Intel "applet" interface are not supported through this. The 15025'limit' and 'performance' interface (/proc) are fully functional. 15026[Note that basic policy for controlling performance state 15027transitions will be included in the next version of ospmd.] The 15028idle handler was modified to more aggressively use C2, and PIIX4 15029errata handling underwent a complete overhaul (big thanks to 15030Dominik Brodowski). 15031 15032Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR- 15033based devices in the ACPI namespace are now dynamically bound 15034(associated) with their PCI counterparts (e.g. PCI1->01:00.0). 15035This allows, among other things, ACPI to resolve bus numbers for 15036subordinate PCI bridges. 15037 15038Enhanced PCI IRQ routing to get the proper bus number for _PRT 15039entries defined underneath PCI bridges. 15040 15041Added IBM 600E to bad bios list due to invalid _ADR value for 15042PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing. 15043 15044In the process of adding full MADT support (e.g. IOAPIC) for IA32 15045(acpi.c, mpparse.c) -- stay tuned. 15046 15047Added back visual differentiation between fixed-feature and 15048control-method buttons in dmesg. Buttons are also subtyped (e.g. 15049button/power/PWRF) to simplify button identification. 15050 15051We no longer use -Wno-unused when compiling debug. Please ignore 15052any "_THIS_MODULE defined but not used" messages. 15053 15054Can now shut down the system using "magic sysrq" key. 15055 15056 150573) iASL Compiler version 2041: 15058 15059Fixed a problem where conversion errors for hex/octal/decimal 15060constants were not reported. 15061 15062Implemented a fix for the General Register template Address field. 15063This field was 8 bits when it should be 64. 15064 15065Fixed a problem where errors/warnings were no longer being emitted 15066within the listing output file. 15067 15068Implemented the ACPI 2.0A restriction on ACPI Table Signatures to 15069exactly 4 characters, alphanumeric only. 15070 15071 15072 15073 15074---------------------------------------- 15075Summary of changes for this release: 03_08_02 15076 15077 150781) ACPI CA Core Subsystem Version 20020308: 15079 15080Fixed a problem with AML Fields where the use of the "AccessAny" 15081keyword could cause an interpreter error due to attempting to read 15082or write beyond the end of the parent Operation Region. 15083 15084Fixed a problem in the SystemMemory Operation Region handler where 15085an attempt was made to map memory beyond the end of the region. 15086This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY" 15087errors on some Linux systems. 15088 15089Fixed a problem where the interpreter/namespace "search to root" 15090algorithm was not functioning for some object types. Relaxed the 15091internal restriction on the search to allow upsearches for all 15092external object types as well as most internal types. 15093 15094 150952) Linux: 15096 15097We now use safe_halt() macro versus individual calls to sti | hlt. 15098 15099Writing to the processor limit interface should now work. "echo 1" 15100will increase the limit, 2 will decrease, and 0 will reset to the 15101 15102default. 15103 15104 151053) ASL compiler: 15106 15107Fixed segfault on Linux version. 15108 15109 15110---------------------------------------- 15111Summary of changes for this release: 02_25_02 15112 151131) ACPI CA Core Subsystem: 15114 15115 15116Fixed a problem where the GPE bit masks were not initialized 15117properly, causing erratic GPE behavior. 15118 15119Implemented limited support for multiple calling conventions. The 15120code can be generated with either the VPL (variable parameter 15121list, or "C") convention, or the FPL (fixed parameter list, or 15122"Pascal") convention. The core subsystem is about 3.4% smaller 15123when generated with FPL. 15124 15125 151262) Linux 15127 15128Re-add some /proc/acpi/event functionality that was lost during 15129the rewrite 15130 15131Resolved issue with /proc events for fixed-feature buttons showing 15132up as the system device. 15133 15134Fixed checks on C2/C3 latencies to be inclusive of maximum values. 15135 15136Replaced AE_ERRORs in acpi_osl.c with more specific error codes. 15137 15138Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi" 15139 15140Fixed limit interface & usage to fix bugs with passive cooling 15141hysterisis. 15142 15143Restructured PRT support. 15144 15145 15146---------------------------------------- 15147Summary of changes for this label: 02_14_02 15148 15149 151501) ACPI CA Core Subsystem: 15151 15152Implemented support in AcpiLoadTable to allow loading of FACS and 15153FADT tables. 15154 15155Suport for the now-obsolete interim 0.71 64-bit ACPI tables has 15156been removed. All 64-bit platforms should be migrated to the ACPI 151572.0 tables. The actbl71.h header has been removed from the source 15158tree. 15159 15160All C macros defined within the subsystem have been prefixed with 15161"ACPI_" to avoid collision with other system include files. 15162 15163Removed the return value for the two AcpiOsPrint interfaces, since 15164it is never used and causes lint warnings for ignoring the return 15165value. 15166 15167Added error checking to all internal mutex acquire and release 15168calls. Although a failure from one of these interfaces is 15169probably a fatal system error, these checks will cause the 15170immediate abort of the currently executing method or interface. 15171 15172Fixed a problem where the AcpiSetCurrentResources interface could 15173fault. This was a side effect of the deployment of the new memory 15174allocation model. 15175 15176Fixed a couple of problems with the Global Lock support introduced 15177in the last major build. The "common" (1.0/2.0) internal FACS was 15178being overwritten with the FACS signature and clobbering the 15179Global Lock pointer. Also, the actual firmware FACS was being 15180unmapped after construction of the "common" FACS, preventing 15181access to the actual Global Lock field within it. The "common" 15182internal FACS is no longer installed as an actual ACPI table; it 15183is used simply as a global. 15184 15185Code and Data Size: Current core subsystem library sizes are shown 15186below. These are the code and data sizes for the acpica.lib 15187produced by the Microsoft Visual C++ 6.0 compiler, and these 15188values do not include any ACPI driver or OSPM code. The debug 15189version of the code includes the debug output trace mechanism and 15190has a larger code and data size. Note that these values will vary 15191depending on the efficiency of the compiler and the compiler 15192options used during generation. 15193 15194 Previous Release (02_07_01) 15195 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 15196 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 15197 Current Release: 15198 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 15199 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 15200 15201 152022) Linux 15203 15204Updated Linux-specific code for core macro and OSL interface 15205changes described above. 15206 15207Improved /proc/acpi/event. It now can be opened only once and has 15208proper poll functionality. 15209 15210Fixed and restructured power management (acpi_bus). 15211 15212Only create /proc "view by type" when devices of that class exist. 15213 15214Fixed "charging/discharging" bug (and others) in acpi_battery. 15215 15216Improved thermal zone code. 15217 15218 152193) ASL Compiler, version X2039: 15220 15221 15222Implemented the new compiler restriction on ASL String hex/octal 15223escapes to non-null, ASCII values. An error results if an invalid 15224value is used. (This will require an ACPI 2.0 specification 15225change.) 15226 15227AML object labels that are output to the optional C and ASM source 15228are now prefixed with both the ACPI table signature and table ID 15229to help guarantee uniqueness within a large BIOS project. 15230 15231 15232---------------------------------------- 15233Summary of changes for this label: 02_01_02 15234 152351) ACPI CA Core Subsystem: 15236 15237ACPI 2.0 support is complete in the entire Core Subsystem and the 15238ASL compiler. All new ACPI 2.0 operators are implemented and all 15239other changes for ACPI 2.0 support are complete. With 15240simultaneous code and data optimizations throughout the subsystem, 15241ACPI 2.0 support has been implemented with almost no additional 15242cost in terms of code and data size. 15243 15244Implemented a new mechanism for allocation of return buffers. If 15245the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will 15246be allocated on behalf of the caller. Consolidated all return 15247buffer validation and allocation to a common procedure. Return 15248buffers will be allocated via the primary OSL allocation interface 15249since it appears that a separate pool is not needed by most users. 15250If a separate pool is required for these buffers, the caller can 15251still use the original mechanism and pre-allocate the buffer(s). 15252 15253Implemented support for string operands within the DerefOf 15254operator. 15255 15256Restructured the Hardware and Event managers to be table driven, 15257simplifying the source code and reducing the amount of generated 15258code. 15259 15260Split the common read/write low-level ACPI register bitfield 15261procedure into a separate read and write, simplifying the code 15262considerably. 15263 15264Obsoleted the AcpiOsCallocate OSL interface. This interface was 15265used only a handful of times and didn't have enough critical mass 15266for a separate interface. Replaced with a common calloc procedure 15267in the core. 15268 15269Fixed a reported problem with the GPE number mapping mechanism 15270that allows GPE1 numbers to be non-contiguous with GPE0. 15271Reorganized the GPE information and shrunk a large array that was 15272originally large enough to hold info for all possible GPEs (256) 15273to simply large enough to hold all GPEs up to the largest GPE 15274number on the machine. 15275 15276Fixed a reported problem with resource structure alignment on 64- 15277bit platforms. 15278 15279Changed the AcpiEnableEvent and AcpiDisableEvent external 15280interfaces to not require any flags for the common case of 15281enabling/disabling a GPE. 15282 15283Implemented support to allow a "Notify" on a Processor object. 15284 15285Most TBDs in comments within the source code have been resolved 15286and eliminated. 15287 15288 15289Fixed a problem in the interpreter where a standalone parent 15290prefix (^) was not handled correctly in the interpreter and 15291debugger. 15292 15293Removed obsolete and unnecessary GPE save/restore code. 15294 15295Implemented Field support in the ASL Load operator. This allows a 15296table to be loaded from a named field, in addition to loading a 15297table directly from an Operation Region. 15298 15299Implemented timeout and handle support in the external Global Lock 15300interfaces. 15301 15302Fixed a problem in the AcpiDump utility where pathnames were no 15303longer being generated correctly during the dump of named objects. 15304 15305Modified the AML debugger to give a full display of if/while 15306predicates instead of just one AML opcode at a time. (The 15307predicate can have several nested ASL statements.) The old method 15308was confusing during single stepping. 15309 15310Code and Data Size: Current core subsystem library sizes are shown 15311below. These are the code and data sizes for the acpica.lib 15312produced by the Microsoft Visual C++ 6.0 compiler, and these 15313values do not include any ACPI driver or OSPM code. The debug 15314version of the code includes the debug output trace mechanism and 15315has a larger code and data size. Note that these values will vary 15316depending on the efficiency of the compiler and the compiler 15317options used during generation. 15318 15319 Previous Release (12_18_01) 15320 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 15321 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 15322 Current Release: 15323 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 15324 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 15325 153262) Linux 15327 15328 Implemented fix for PIIX reverse throttling errata (Processor 15329driver) 15330 15331Added new Limit interface (Processor and Thermal drivers) 15332 15333New thermal policy (Thermal driver) 15334 15335Many updates to /proc 15336 15337Battery "low" event support (Battery driver) 15338 15339Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers) 15340 15341IA32 - IA64 initialization unification, no longer experimental 15342 15343Menuconfig options redesigned 15344 153453) ASL Compiler, version X2037: 15346 15347Implemented several new output features to simplify integration of 15348AML code into firmware: 1) Output the AML in C source code with 15349labels for each named ASL object. The original ASL source code 15350is interleaved as C comments. 2) Output the AML in ASM source code 15351with labels and interleaved ASL source. 3) Output the AML in 15352raw hex table form, in either C or ASM. 15353 15354Implemented support for optional string parameters to the 15355LoadTable operator. 15356 15357Completed support for embedded escape sequences within string 15358literals. The compiler now supports all single character escapes 15359as well as the Octal and Hex escapes. Note: the insertion of a 15360null byte into a string literal (via the hex/octal escape) causes 15361the string to be immediately terminated. A warning is issued. 15362 15363Fixed a problem where incorrect AML was generated for the case 15364where an ASL namepath consists of a single parent prefix ( 15365 15366) with no trailing name segments. 15367 15368The compiler has been successfully generated with a 64-bit C 15369compiler. 15370 15371 15372 15373 15374---------------------------------------- 15375Summary of changes for this label: 12_18_01 15376 153771) Linux 15378 15379Enhanced blacklist with reason and severity fields. Any table's 15380signature may now be used to identify a blacklisted system. 15381 15382Call _PIC control method to inform the firmware which interrupt 15383model the OS is using. Turn on any disabled link devices. 15384 15385Cleaned up busmgr /proc error handling (Andreas Dilger) 15386 15387 2) ACPI CA Core Subsystem: 15388 15389Implemented ACPI 2.0 semantics for the "Break" operator (Exit from 15390while loop) 15391 15392Completed implementation of the ACPI 2.0 "Continue", 15393"ConcatenateResTemplate", "DataTableRegion", and "LoadTable" 15394operators. All new ACPI 2.0 operators are now implemented in both 15395the ASL compiler and the AML interpreter. The only remaining ACPI 153962.0 task is support for the String data type in the DerefOf 15397operator. Fixed a problem with AcquireMutex where the status code 15398was lost if the caller had to actually wait for the mutex. 15399 15400Increased the maximum ASL Field size from 64K bits to 4G bits. 15401 15402Completed implementation of the external Global Lock interfaces -- 15403AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and 15404Handler parameters were added. 15405 15406Completed another pass at removing warnings and issues when 15407compiling with 64-bit compilers. The code now compiles cleanly 15408with the Intel 64-bit C/C++ compiler. Most notably, the pointer 15409add and subtract (diff) macros have changed considerably. 15410 15411 15412Created and deployed a new ACPI_SIZE type that is 64-bits wide on 1541364-bit platforms, 32-bits on all others. This type is used 15414wherever memory allocation and/or the C sizeof() operator is used, 15415and affects the OSL memory allocation interfaces AcpiOsAllocate 15416and AcpiOsCallocate. 15417 15418Implemented sticky user breakpoints in the AML debugger. 15419 15420Code and Data Size: Current core subsystem library sizes are shown 15421below. These are the code and data sizes for the acpica.lib 15422produced by the Microsoft Visual C++ 6.0 compiler, and these 15423values do not include any ACPI driver or OSPM code. The debug 15424version of the code includes the debug output trace mechanism and 15425has a larger code and data size. Note that these values will vary 15426depending on the efficiency of the compiler and the compiler 15427options used during generation. 15428 15429 Previous Release (12_05_01) 15430 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 15431 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 15432 Current Release: 15433 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 15434 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 15435 15436 3) ASL Compiler, version X2034: 15437 15438Now checks for (and generates an error if detected) the use of a 15439Break or Continue statement without an enclosing While statement. 15440 15441 15442Successfully generated the compiler with the Intel 64-bit C 15443compiler. 15444 15445 ---------------------------------------- 15446Summary of changes for this label: 12_05_01 15447 15448 1) ACPI CA Core Subsystem: 15449 15450The ACPI 2.0 CopyObject operator is fully implemented. This 15451operator creates a new copy of an object (and is also used to 15452bypass the "implicit conversion" mechanism of the Store operator.) 15453 15454The ACPI 2.0 semantics for the SizeOf operator are fully 15455implemented. The change is that performing a SizeOf on a 15456reference object causes an automatic dereference of the object to 15457tha actual value before the size is evaluated. This behavior was 15458undefined in ACPI 1.0. 15459 15460The ACPI 2.0 semantics for the Extended IRQ resource descriptor 15461have been implemented. The interrupt polarity and mode are now 15462independently set. 15463 15464Fixed a problem where ASL Constants (Zero, One, Ones, Revision) 15465appearing in Package objects were not properly converted to 15466integers when the internal Package was converted to an external 15467object (via the AcpiEvaluateObject interface.) 15468 15469Fixed a problem with the namespace object deletion mechanism for 15470objects created by control methods. There were two parts to this 15471problem: 1) Objects created during the initialization phase method 15472parse were not being deleted, and 2) The object owner ID mechanism 15473to track objects was broken. 15474 15475Fixed a problem where the use of the ASL Scope operator within a 15476control method would result in an invalid opcode exception. 15477 15478Fixed a problem introduced in the previous label where the buffer 15479length required for the _PRT structure was not being returned 15480correctly. 15481 15482Code and Data Size: Current core subsystem library sizes are shown 15483below. These are the code and data sizes for the acpica.lib 15484produced by the Microsoft Visual C++ 6.0 compiler, and these 15485values do not include any ACPI driver or OSPM code. The debug 15486version of the code includes the debug output trace mechanism and 15487has a larger code and data size. Note that these values will vary 15488depending on the efficiency of the compiler and the compiler 15489options used during generation. 15490 15491 Previous Release (11_20_01) 15492 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 15493 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 15494 15495 Current Release: 15496 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 15497 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 15498 15499 2) Linux: 15500 15501Updated all files to apply cleanly against 2.4.16. 15502 15503Added basic PCI Interrupt Routing Table (PRT) support for IA32 15504(acpi_pci.c), and unified the PRT code for IA32 and IA64. This 15505version supports both static and dyanmic PRT entries, but dynamic 15506entries are treated as if they were static (not yet 15507reconfigurable). Architecture- specific code to use this data is 15508absent on IA32 but should be available shortly. 15509 15510Changed the initialization sequence to start the ACPI interpreter 15511(acpi_init) prior to initialization of the PCI driver (pci_init) 15512in init/main.c. This ordering is required to support PRT and 15513facilitate other (future) enhancement. A side effect is that the 15514ACPI bus driver and certain device drivers can no longer be loaded 15515as modules. 15516 15517Modified the 'make menuconfig' options to allow PCI Interrupt 15518Routing support to be included without the ACPI Bus and other 15519device drivers. 15520 15521 3) ASL Compiler, version X2033: 15522 15523Fixed some issues with the use of the new CopyObject and 15524DataTableRegion operators. Both are fully functional. 15525 15526 ---------------------------------------- 15527Summary of changes for this label: 11_20_01 15528 15529 20 November 2001. Summary of changes for this release. 15530 15531 1) ACPI CA Core Subsystem: 15532 15533Updated Index support to match ACPI 2.0 semantics. Storing a 15534Integer, String, or Buffer to an Index of a Buffer will store only 15535the least-significant byte of the source to the Indexed buffer 15536byte. Multiple writes are not performed. 15537 15538Fixed a problem where the access type used in an AccessAs ASL 15539operator was not recorded correctly into the field object. 15540 15541Fixed a problem where ASL Event objects were created in a 15542signalled state. Events are now created in an unsignalled state. 15543 15544The internal object cache is now purged after table loading and 15545initialization to reduce the use of dynamic kernel memory -- on 15546the assumption that object use is greatest during the parse phase 15547of the entire table (versus the run-time use of individual control 15548methods.) 15549 15550ACPI 2.0 variable-length packages are now fully operational. 15551 15552Code and Data Size: Code and Data optimizations have permitted new 15553feature development with an actual reduction in the library size. 15554Current core subsystem library sizes are shown below. These are 15555the code and data sizes for the acpica.lib produced by the 15556Microsoft Visual C++ 6.0 compiler, and these values do not include 15557any ACPI driver or OSPM code. The debug version of the code 15558includes the debug output trace mechanism and has a larger code 15559and data size. Note that these values will vary depending on the 15560efficiency of the compiler and the compiler options used during 15561generation. 15562 15563 Previous Release (11_09_01): 15564 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 15565 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 15566 15567 Current Release: 15568 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 15569 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 15570 15571 2) Linux: 15572 15573Enhanced the ACPI boot-time initialization code to allow the use 15574of Local APIC tables for processor enumeration on IA-32, and to 15575pave the way for a fully MPS-free boot (on SMP systems) in the 15576near future. This functionality replaces 15577arch/i386/kernel/acpitables.c, which was introduced in an earlier 155782.4.15-preX release. To enable this feature you must add 15579"acpi_boot=on" to the kernel command line -- see the help entry 15580for CONFIG_ACPI_BOOT for more information. An IA-64 release is in 15581the works... 15582 15583Restructured the configuration options to allow boot-time table 15584parsing support without inclusion of the ACPI Interpreter (and 15585other) code. 15586 15587NOTE: This release does not include fixes for the reported events, 15588power-down, and thermal passive cooling issues (coming soon). 15589 15590 3) ASL Compiler: 15591 15592Added additional typechecking for Fields within restricted access 15593Operation Regions. All fields within EC and CMOS regions must be 15594declared with ByteAcc. All fields withing SMBus regions must be 15595declared with the BufferAcc access type. 15596 15597Fixed a problem where the listing file output of control methods 15598no longer interleaved the actual AML code with the ASL source 15599code. 15600 15601 15602 15603 15604---------------------------------------- 15605Summary of changes for this label: 11_09_01 15606 156071) ACPI CA Core Subsystem: 15608 15609Implemented ACPI 2.0-defined support for writes to fields with a 15610Buffer, String, or Integer source operand that is smaller than the 15611target field. In these cases, the source operand is zero-extended 15612to fill the target field. 15613 15614Fixed a problem where a Field starting bit offset (within the 15615parent operation region) was calculated incorrectly if the 15616 15617alignment of the field differed from the access width. This 15618affected CreateWordField, CreateDwordField, CreateQwordField, and 15619possibly other fields that use the "AccessAny" keyword. 15620 15621Fixed a problem introduced in the 11_02_01 release where indirect 15622stores through method arguments did not operate correctly. 15623 156242) Linux: 15625 15626Implemented boot-time ACPI table parsing support 15627(CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code 15628facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than 15629legacy BIOS interfaces (e.g. MPS) for the configuration of system 15630processors, memory, and interrupts during setup_arch(). Note that 15631this patch does not include the required architecture-specific 15632changes required to apply this information -- subsequent patches 15633will be posted for both IA32 and IA64 to achieve this. 15634 15635Added low-level sleep support for IA32 platforms, courtesy of Pat 15636Mochel. This allows IA32 systems to transition to/from various 15637sleeping states (e.g. S1, S3), although the lack of a centralized 15638driver model and power-manageable drivers will prevent its 15639(successful) use on most systems. 15640 15641Revamped the ACPI 'menuconfig' layout: created new "ACPI Support" 15642submenu, unified IA32 and IA64 options, added new "Boot using ACPI 15643tables" option, etc. 15644 15645Increased the default timeout for the EC driver from 1ms to 10ms 15646(1000 cycles of 10us) to try to address AE_TIME errors during EC 15647transactions. 15648 15649 ---------------------------------------- 15650Summary of changes for this label: 11_02_01 15651 156521) ACPI CA Core Subsystem: 15653 15654ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access 15655(QWordAcc keyword). All ACPI 2.0 64-bit support is now 15656implemented. 15657 15658OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required 15659changes to support ACPI 2.0 Qword field access. Read/Write 15660PciConfiguration(), Read/Write Memory(), and Read/Write Port() now 15661accept an ACPI_INTEGER (64 bits) as the value parameter. Also, 15662the value parameter for the address space handler interface is now 15663an ACPI_INTEGER. OSL implementations of these interfaces must now 15664handle the case where the Width parameter is 64. 15665 15666Index Fields: Fixed a problem where unaligned bit assembly and 15667disassembly for IndexFields was not supported correctly. 15668 15669Index and Bank Fields: Nested Index and Bank Fields are now 15670supported. During field access, a check is performed to ensure 15671that the value written to an Index or Bank register is not out of 15672the range of the register. The Index (or Bank) register is 15673written before each access to the field data. Future support will 15674include allowing individual IndexFields to be wider than the 15675DataRegister width. 15676 15677Fields: Fixed a problem where the AML interpreter was incorrectly 15678attempting to write beyond the end of a Field/OpRegion. This was 15679a boundary case that occurred when a DWORD field was written to a 15680BYTE access OpRegion, forcing multiple writes and causing the 15681interpreter to write one datum too many. 15682 15683Fields: Fixed a problem with Field/OpRegion access where the 15684starting bit address of a field was incorrectly calculated if the 15685current access type was wider than a byte (WordAcc, DwordAcc, or 15686QwordAcc). 15687 15688Fields: Fixed a problem where forward references to individual 15689FieldUnits (individual Field names within a Field definition) were 15690not resolved during the AML table load. 15691 15692Fields: Fixed a problem where forward references from a Field 15693definition to the parent Operation Region definition were not 15694resolved during the AML table load. 15695 15696Fields: Duplicate FieldUnit names within a scope are now detected 15697during AML table load. 15698 15699Acpi Interfaces: Fixed a problem where the AcpiGetName() interface 15700returned an incorrect name for the root node. 15701 15702Code and Data Size: Code and Data optimizations have permitted new 15703feature development with an actual reduction in the library size. 15704Current core subsystem library sizes are shown below. These are 15705the code and data sizes for the acpica.lib produced by the 15706Microsoft Visual C++ 6.0 compiler, and these values do not include 15707any ACPI driver or OSPM code. The debug version of the code 15708includes the debug output trace mechanism and has a larger code 15709and data size. Note that these values will vary depending on the 15710efficiency of the compiler and the compiler options used during 15711generation. 15712 15713 Previous Release (10_18_01): 15714 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 15715 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 15716 15717 Current Release: 15718 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 15719 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 15720 15721 2) Linux: 15722 15723Improved /proc processor output (Pavel Machek) Re-added 15724MODULE_LICENSE("GPL") to all modules. 15725 15726 3) ASL Compiler version X2030: 15727 15728Duplicate FieldUnit names within a scope are now detected and 15729flagged as errors. 15730 15731 4) Documentation: 15732 15733Programmer Reference updated to reflect OSL and address space 15734handler interface changes described above. 15735 15736---------------------------------------- 15737Summary of changes for this label: 10_18_01 15738 15739ACPI CA Core Subsystem: 15740 15741Fixed a problem with the internal object reference count mechanism 15742that occasionally caused premature object deletion. This resolves 15743all of the outstanding problem reports where an object is deleted 15744in the middle of an interpreter evaluation. Although this problem 15745only showed up in rather obscure cases, the solution to the 15746problem involved an adjustment of all reference counts involving 15747objects attached to namespace nodes. 15748 15749Fixed a problem with Field support in the interpreter where 15750writing to an aligned field whose length is an exact multiple (2 15751or greater) of the field access granularity would cause an attempt 15752to write beyond the end of the field. 15753 15754The top level AML opcode execution functions within the 15755interpreter have been renamed with a more meaningful and 15756consistent naming convention. The modules exmonad.c and 15757exdyadic.c were eliminated. New modules are exoparg1.c, 15758exoparg2.c, exoparg3.c, and exoparg6.c. 15759 15760Support for the ACPI 2.0 "Mid" ASL operator has been implemented. 15761 15762Fixed a problem where the AML debugger was causing some internal 15763objects to not be deleted during subsystem termination. 15764 15765Fixed a problem with the external AcpiEvaluateObject interface 15766where the subsystem would fault if the named object to be 15767evaluated refered to a constant such as Zero, Ones, etc. 15768 15769Fixed a problem with IndexFields and BankFields where the 15770subsystem would fault if the index, data, or bank registers were 15771not defined in the same scope as the field itself. 15772 15773Added printf format string checking for compilers that support 15774this feature. Corrected more than 50 instances of issues with 15775format specifiers within invocations of ACPI_DEBUG_PRINT 15776throughout the core subsystem code. 15777 15778The ASL "Revision" operator now returns the ACPI support level 15779implemented in the core - the value "2" since the ACPI 2.0 support 15780is more than 50% implemented. 15781 15782Enhanced the output of the AML debugger "dump namespace" command 15783to output in a more human-readable form. 15784 15785Current core subsystem library code sizes are shown below. These 15786 15787are the code and data sizes for the acpica.lib produced by the 15788Microsoft Visual C++ 6.0 compiler, and these values do not include 15789any ACPI driver or OSPM code. The debug version of the code 15790includes the full debug trace mechanism -- leading to a much 15791 15792larger code and data size. Note that these values will vary 15793depending on the efficiency of the compiler and the compiler 15794options used during generation. 15795 15796 Previous Label (09_20_01): 15797 Non-Debug Version: 65K Code, 5K Data, 70K Total 15798 Debug Version: 138K Code, 58K Data, 196K Total 15799 15800 This Label: 15801 15802 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 15803 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 15804 15805Linux: 15806 15807Implemented a "Bad BIOS Blacklist" to track machines that have 15808known ASL/AML problems. 15809 15810Enhanced the /proc interface for the thermal zone driver and added 15811support for _HOT (the critical suspend trip point). The 'info' 15812file now includes threshold/policy information, and allows setting 15813of _SCP (cooling preference) and _TZP (polling frequency) values 15814to the 'info' file. Examples: "echo tzp=5 > info" sets the polling 15815frequency to 5 seconds, and "echo scp=1 > info" sets the cooling 15816preference to the passive/quiet mode (if supported by the ASL). 15817 15818Implemented a workaround for a gcc bug that resuted in an OOPs 15819when loading the control method battery driver. 15820 15821 ---------------------------------------- 15822Summary of changes for this label: 09_20_01 15823 15824 ACPI CA Core Subsystem: 15825 15826The AcpiEnableEvent and AcpiDisableEvent interfaces have been 15827modified to allow individual GPE levels to be flagged as wake- 15828enabled (i.e., these GPEs are to remain enabled when the platform 15829sleeps.) 15830 15831The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now 15832support wake-enabled GPEs. This means that upon entering the 15833sleep state, all GPEs that are not wake-enabled are disabled. 15834When leaving the sleep state, these GPEs are reenabled. 15835 15836A local double-precision divide/modulo module has been added to 15837enhance portability to OS kernels where a 64-bit math library is 15838not available. The new module is "utmath.c". 15839 15840Several optimizations have been made to reduce the use of CPU 15841stack. Originally over 2K, the maximum stack usage is now below 158422K at 1860 bytes (1.82k) 15843 15844Fixed a problem with the AcpiGetFirmwareTable interface where the 15845root table pointer was not mapped into a logical address properly. 15846 15847Fixed a problem where a NULL pointer was being dereferenced in the 15848interpreter code for the ASL Notify operator. 15849 15850Fixed a problem where the use of the ASL Revision operator 15851returned an error. This operator now returns the current version 15852of the ACPI CA core subsystem. 15853 15854Fixed a problem where objects passed as control method parameters 15855to AcpiEvaluateObject were always deleted at method termination. 15856However, these objects may end up being stored into the namespace 15857by the called method. The object reference count mechanism was 15858applied to these objects instead of a force delete. 15859 15860Fixed a problem where static strings or buffers (contained in the 15861AML code) that are declared as package elements within the ASL 15862code could cause a fault because the interpreter would attempt to 15863delete them. These objects are now marked with the "static 15864object" flag to prevent any attempt to delete them. 15865 15866Implemented an interpreter optimization to use operands directly 15867from the state object instead of extracting the operands to local 15868variables. This reduces stack use and code size, and improves 15869performance. 15870 15871The module exxface.c was eliminated as it was an unnecessary extra 15872layer of code. 15873 15874Current core subsystem library code sizes are shown below. These 15875are the code and data sizes for the acpica.lib produced by the 15876Microsoft Visual C++ 6.0 compiler, and these values do not include 15877any ACPI driver or OSPM code. The debug version of the code 15878includes the full debug trace mechanism -- leading to a much 15879larger code and data size. Note that these values will vary 15880depending on the efficiency of the compiler and the compiler 15881options used during generation. 15882 15883 Non-Debug Version: 65K Code, 5K Data, 70K Total 15884(Previously 69K) Debug Version: 138K Code, 58K Data, 196K 15885Total (Previously 195K) 15886 15887Linux: 15888 15889Support for ACPI 2.0 64-bit integers has been added. All ACPI 15890Integer objects are now 64 bits wide 15891 15892All Acpi data types and structures are now in lower case. Only 15893Acpi macros are upper case for differentiation. 15894 15895 Documentation: 15896 15897Changes to the external interfaces as described above. 15898 15899 ---------------------------------------- 15900Summary of changes for this label: 08_31_01 15901 15902 ACPI CA Core Subsystem: 15903 15904A bug with interpreter implementation of the ASL Divide operator 15905was found and fixed. The implicit function return value (not the 15906explicit store operands) was returning the remainder instead of 15907the quotient. This was a longstanding bug and it fixes several 15908known outstanding issues on various platforms. 15909 15910The ACPI_DEBUG_PRINT and function trace entry/exit macros have 15911been further optimized for size. There are 700 invocations of the 15912DEBUG_PRINT macro alone, so each optimization reduces the size of 15913the debug version of the subsystem significantly. 15914 15915A stack trace mechanism has been implemented. The maximum stack 15916usage is about 2K on 32-bit platforms. The debugger command "stat 15917stack" will display the current maximum stack usage. 15918 15919All public symbols and global variables within the subsystem are 15920now prefixed with the string "Acpi". This keeps all of the 15921symbols grouped together in a kernel map, and avoids conflicts 15922with other kernel subsystems. 15923 15924Most of the internal fixed lookup tables have been moved into the 15925code segment via the const operator. 15926 15927Several enhancements have been made to the interpreter to both 15928reduce the code size and improve performance. 15929 15930Current core subsystem library code sizes are shown below. These 15931are the code and data sizes for the acpica.lib produced by the 15932Microsoft Visual C++ 6.0 compiler, and these values do not include 15933any ACPI driver or OSPM code. The debug version of the code 15934includes the full debug trace mechanism which contains over 700 15935invocations of the DEBUG_PRINT macro, 500 function entry macro 15936invocations, and over 900 function exit macro invocations -- 15937leading to a much larger code and data size. Note that these 15938values will vary depending on the efficiency of the compiler and 15939the compiler options used during generation. 15940 15941 Non-Debug Version: 64K Code, 5K Data, 69K Total 15942Debug Version: 137K Code, 58K Data, 195K Total 15943 15944 Linux: 15945 15946Implemented wbinvd() macro, pending a kernel-wide definition. 15947 15948Fixed /proc/acpi/event to handle poll() and short reads. 15949 15950 ASL Compiler, version X2026: 15951 15952Fixed a problem introduced in the previous label where the AML 15953 15954code emitted for package objects produced packages with zero 15955length. 15956 15957 ---------------------------------------- 15958Summary of changes for this label: 08_16_01 15959 15960ACPI CA Core Subsystem: 15961 15962The following ACPI 2.0 ASL operators have been implemented in the 15963AML interpreter (These are already supported by the Intel ASL 15964compiler): ToDecimalString, ToHexString, ToString, ToInteger, and 15965ToBuffer. Support for 64-bit AML constants is implemented in the 15966AML parser, debugger, and disassembler. 15967 15968The internal memory tracking mechanism (leak detection code) has 15969been upgraded to reduce the memory overhead (a separate tracking 15970block is no longer allocated for each memory allocation), and now 15971supports all of the internal object caches. 15972 15973The data structures and code for the internal object caches have 15974been coelesced and optimized so that there is a single cache and 15975memory list data structure and a single group of functions that 15976implement generic cache management. This has reduced the code 15977size in both the debug and release versions of the subsystem. 15978 15979The DEBUG_PRINT macro(s) have been optimized for size and replaced 15980by ACPI_DEBUG_PRINT. The syntax for this macro is slightly 15981different, because it generates a single call to an internal 15982function. This results in a savings of about 90 bytes per 15983invocation, resulting in an overall code and data savings of about 1598416% in the debug version of the subsystem. 15985 15986 Linux: 15987 15988Fixed C3 disk corruption problems and re-enabled C3 on supporting 15989machines. 15990 15991Integrated low-level sleep code by Patrick Mochel. 15992 15993Further tweaked source code Linuxization. 15994 15995Other minor fixes. 15996 15997 ASL Compiler: 15998 15999Support for ACPI 2.0 variable length packages is fixed/completed. 16000 16001Fixed a problem where the optional length parameter for the ACPI 160022.0 ToString operator. 16003 16004Fixed multiple extraneous error messages when a syntax error is 16005detected within the declaration line of a control method. 16006 16007 ---------------------------------------- 16008Summary of changes for this label: 07_17_01 16009 16010ACPI CA Core Subsystem: 16011 16012Added a new interface named AcpiGetFirmwareTable to obtain any 16013ACPI table via the ACPI signature. The interface can be called at 16014any time during kernel initialization, even before the kernel 16015virtual memory manager is initialized and paging is enabled. This 16016allows kernel subsystems to obtain ACPI tables very early, even 16017before the ACPI CA subsystem is initialized. 16018 16019Fixed a problem where Fields defined with the AnyAcc attribute 16020could be resolved to the incorrect address under the following 16021conditions: 1) the field width is larger than 8 bits and 2) the 16022parent operation region is not defined on a DWORD boundary. 16023 16024Fixed a problem where the interpreter is not being locked during 16025namespace initialization (during execution of the _INI control 16026methods), causing an error when an attempt is made to release it 16027later. 16028 16029ACPI 2.0 support in the AML Interpreter has begun and will be 16030ongoing throughout the rest of this year. In this label, The Mod 16031operator is implemented. 16032 16033Added a new data type to contain full PCI addresses named 16034ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device, 16035and Function values. 16036 16037 Linux: 16038 16039Enhanced the Linux version of the source code to change most 16040capitalized ACPI type names to lowercase. For example, all 16041instances of ACPI_STATUS are changed to acpi_status. This will 16042result in a large diff, but the change is strictly cosmetic and 16043aligns the CA code closer to the Linux coding standard. 16044 16045OSL Interfaces: 16046 16047The interfaces to the PCI configuration space have been changed to 16048add the PCI Segment number and to split the single 32-bit combined 16049DeviceFunction field into two 16-bit fields. This was 16050accomplished by moving the four values that define an address in 16051PCI configuration space (segment, bus, device, and function) to 16052the new ACPI_PCI_ID structure. 16053 16054The changes to the PCI configuration space interfaces led to a 16055reexamination of the complete set of address space access 16056interfaces for PCI, I/O, and Memory. The previously existing 18 16057interfaces have proven difficult to maintain (any small change 16058must be propagated across at least 6 interfaces) and do not easily 16059allow for future expansion to 64 bits if necessary. Also, on some 16060systems, it would not be appropriate to demultiplex the access 16061width (8, 16, 32,or 64) before calling the OSL if the 16062corresponding native OS interfaces contain a similar access width 16063parameter. For these reasons, the 18 address space interfaces 16064have been replaced by these 6 new ones: 16065 16066AcpiOsReadPciConfiguration 16067AcpiOsWritePciConfiguration 16068AcpiOsReadMemory 16069AcpiOsWriteMemory 16070AcpiOsReadPort 16071AcpiOsWritePort 16072 16073Added a new interface named AcpiOsGetRootPointer to allow the OSL 16074to perform the platform and/or OS-specific actions necessary to 16075obtain the ACPI RSDP table pointer. On IA-32 platforms, this 16076interface will simply call down to the CA core to perform the low- 16077memory search for the table. On IA-64, the RSDP is obtained from 16078EFI. Migrating this interface to the OSL allows the CA core to 16079 16080remain OS and platform independent. 16081 16082Added a new interface named AcpiOsSignal to provide a generic 16083"function code and pointer" interface for various miscellaneous 16084signals and notifications that must be made to the host OS. The 16085first such signals are intended to support the ASL Fatal and 16086Breakpoint operators. In the latter case, the AcpiOsBreakpoint 16087interface has been obsoleted. 16088 16089The definition of the AcpiFormatException interface has been 16090changed to simplify its use. The caller no longer must supply a 16091buffer to the call; A pointer to a const string is now returned 16092directly. This allows the call to be easily used in printf 16093statements, etc. since the caller does not have to manage a local 16094buffer. 16095 16096 16097 ASL Compiler, Version X2025: 16098 16099The ACPI 2.0 Switch/Case/Default operators have been implemented 16100and are fully functional. They will work with all ACPI 1.0 16101interpreters, since the operators are simply translated to If/Else 16102pairs. 16103 16104The ACPI 2.0 ElseIf operator is implemented and will also work 16105with 1.0 interpreters, for the same reason. 16106 16107Implemented support for ACPI 2.0 variable-length packages. These 16108packages have a separate opcode, and their size is determined by 16109the interpreter at run-time. 16110 16111Documentation The ACPI CA Programmer Reference has been updated to 16112reflect the new interfaces and changes to existing interfaces. 16113 16114 ------------------------------------------ 16115Summary of changes for this label: 06_15_01 16116 16117 ACPI CA Core Subsystem: 16118 16119Fixed a problem where a DWORD-accessed field within a Buffer 16120object would get its byte address inadvertently rounded down to 16121the nearest DWORD. Buffers are always Byte-accessible. 16122 16123 ASL Compiler, version X2024: 16124 16125Fixed a problem where the Switch() operator would either fault or 16126hang the compiler. Note however, that the AML code for this ACPI 161272.0 operator is not yet implemented. 16128 16129Compiler uses the new AcpiOsGetTimer interface to obtain compile 16130timings. 16131 16132Implementation of the CreateField operator automatically converts 16133a reference to a named field within a resource descriptor from a 16134byte offset to a bit offset if required. 16135 16136Added some missing named fields from the resource descriptor 16137support. These are the names that are automatically created by the 16138compiler to reference fields within a descriptor. They are only 16139valid at compile time and are not passed through to the AML 16140interpreter. 16141 16142Resource descriptor named fields are now typed as Integers and 16143subject to compile-time typechecking when used in expressions. 16144 16145 ------------------------------------------ 16146Summary of changes for this label: 05_18_01 16147 16148 ACPI CA Core Subsystem: 16149 16150Fixed a couple of problems in the Field support code where bits 16151from adjacent fields could be returned along with the proper field 16152bits. Restructured the field support code to improve performance, 16153readability and maintainability. 16154 16155New DEBUG_PRINTP macro automatically inserts the procedure name 16156into the output, saving hundreds of copies of procedure name 16157strings within the source, shrinking the memory footprint of the 16158debug version of the core subsystem. 16159 16160 Source Code Structure: 16161 16162The source code directory tree was restructured to reflect the 16163current organization of the component architecture. Some files 16164and directories have been moved and/or renamed. 16165 16166 Linux: 16167 16168Fixed leaking kacpidpc processes. 16169 16170Fixed queueing event data even when /proc/acpi/event is not 16171opened. 16172 16173 ASL Compiler, version X2020: 16174 16175Memory allocation performance enhancement - over 24X compile time 16176improvement on large ASL files. Parse nodes and namestring 16177buffers are now allocated from a large internal compiler buffer. 16178 16179The temporary .SRC file is deleted unless the "-s" option is 16180specified 16181 16182The "-d" debug output option now sends all output to the .DBG file 16183instead of the console. 16184 16185"External" second parameter is now optional 16186 16187"ElseIf" syntax now properly allows the predicate 16188 16189Last operand to "Load" now recognized as a Target operand 16190 16191Debug object can now be used anywhere as a normal object. 16192 16193ResourceTemplate now returns an object of type BUFFER 16194 16195EISAID now returns an object of type INTEGER 16196 16197"Index" now works with a STRING operand 16198 16199"LoadTable" now accepts optional parameters 16200 16201"ToString" length parameter is now optional 16202 16203"Interrupt (ResourceType," parse error fixed. 16204 16205"Register" with a user-defined region space parse error fixed 16206 16207Escaped backslash at the end of a string ("\\") scan/parse error 16208fixed 16209 16210"Revision" is now an object of type INTEGER. 16211 16212 16213 16214------------------------------------------ 16215Summary of changes for this label: 05_02_01 16216 16217Linux: 16218 16219/proc/acpi/event now blocks properly. 16220 16221Removed /proc/sys/acpi. You can still dump your DSDT from 16222/proc/acpi/dsdt. 16223 16224 ACPI CA Core Subsystem: 16225 16226Fixed a problem introduced in the previous label where some of the 16227"small" resource descriptor types were not recognized. 16228 16229Improved error messages for the case where an ASL Field is outside 16230the range of the parent operation region. 16231 16232 ASL Compiler, version X2018: 16233 16234 16235Added error detection for ASL Fields that extend beyond the length 16236of the parent operation region (only if the length of the region 16237is known at compile time.) This includes fields that have a 16238minimum access width that is smaller than the parent region, and 16239individual field units that are partially or entirely beyond the 16240extent of the parent. 16241 16242 16243 16244------------------------------------------ 16245Summary of changes for this label: 04_27_01 16246 16247 ACPI CA Core Subsystem: 16248 16249Fixed a problem where the namespace mutex could be released at the 16250wrong time during execution of AcpiRemoveAddressSpaceHandler. 16251 16252Added optional thread ID output for debug traces, to simplify 16253debugging of multiple threads. Added context switch notification 16254when the debug code realizes that a different thread is now 16255executing ACPI code. 16256 16257Some additional external data types have been prefixed with the 16258string "ACPI_" for consistency. This may effect existing code. 16259The data types affected are the external callback typedefs - e.g., 16260 16261WALK_CALLBACK becomes ACPI_WALK_CALLBACK. 16262 16263 Linux: 16264 16265Fixed an issue with the OSL semaphore implementation where a 16266thread was waking up with an error from receiving a SIGCHLD 16267signal. 16268 16269Linux version of ACPI CA now uses the system C library for string 16270manipulation routines instead of a local implementation. 16271 16272Cleaned up comments and removed TBDs. 16273 16274 ASL Compiler, version X2017: 16275 16276Enhanced error detection and reporting for all file I/O 16277operations. 16278 16279 Documentation: 16280 16281Programmer Reference updated to version 1.06. 16282 16283 16284 16285------------------------------------------ 16286Summary of changes for this label: 04_13_01 16287 16288 ACPI CA Core Subsystem: 16289 16290Restructured support for BufferFields and RegionFields. 16291BankFields support is now fully operational. All known 32-bit 16292limitations on field sizes have been removed. Both BufferFields 16293and (Operation) RegionFields are now supported by the same field 16294management code. 16295 16296Resource support now supports QWORD address and IO resources. The 1629716/32/64 bit address structures and the Extended IRQ structure 16298have been changed to properly handle Source Resource strings. 16299 16300A ThreadId of -1 is now used to indicate a "mutex not acquired" 16301condition internally and must never be returned by AcpiOsThreadId. 16302This reserved value was changed from 0 since Unix systems allow a 16303thread ID of 0. 16304 16305Linux: 16306 16307Driver code reorganized to enhance portability 16308 16309Added a kernel configuration option to control ACPI_DEBUG 16310 16311Fixed the EC driver to honor _GLK. 16312 16313ASL Compiler, version X2016: 16314 16315Fixed support for the "FixedHw" keyword. Previously, the FixedHw 16316address space was set to 0, not 0x7f as it should be. 16317 16318 ------------------------------------------ 16319Summary of changes for this label: 03_13_01 16320 16321 ACPI CA Core Subsystem: 16322 16323During ACPI initialization, the _SB_._INI method is now run if 16324present. 16325 16326Notify handler fix - notifies are deferred until the parent method 16327completes execution. This fixes the "mutex already acquired" 16328issue seen occasionally. 16329 16330Part of the "implicit conversion" rules in ACPI 2.0 have been 16331found to cause compatibility problems with existing ASL/AML. The 16332convert "result-to-target-type" implementation has been removed 16333for stores to method Args and Locals. Source operand conversion 16334is still fully implemented. Possible changes to ACPI 2.0 16335specification pending. 16336 16337Fix to AcpiRsCalculatePciRoutingTableLength to return correct 16338length. 16339 16340Fix for compiler warnings for 64-bit compiles. 16341 16342 Linux: 16343 16344/proc output aligned for easier parsing. 16345 16346Release-version compile problem fixed. 16347 16348New kernel configuration options documented in Configure.help. 16349 16350IBM 600E - Fixed Sleep button may generate "Invalid <NULL> 16351context" message. 16352 16353 OSPM: 16354 16355Power resource driver integrated with bus manager. 16356 16357Fixed kernel fault during active cooling for thermal zones. 16358 16359Source Code: 16360 16361The source code tree has been restructured. 16362 16363 16364 16365------------------------------------------ 16366Summary of changes for this label: 03_02_01 16367 16368 Linux OS Services Layer (OSL): 16369 16370Major revision of all Linux-specific code. 16371 16372Modularized all ACPI-specific drivers. 16373 16374Added new thermal zone and power resource drivers. 16375 16376Revamped /proc interface (new functionality is under /proc/acpi). 16377 16378New kernel configuration options. 16379 16380 Linux known issues: 16381 16382New kernel configuration options not documented in Configure.help 16383yet. 16384 16385 16386Module dependencies not currently implemented. If used, they 16387should be loaded in this order: busmgr, power, ec, system, 16388processor, battery, ac_adapter, button, thermal. 16389 16390Modules will not load if CONFIG_MODVERSION is set. 16391 16392IBM 600E - entering S5 may reboot instead of shutting down. 16393 16394IBM 600E - Sleep button may generate "Invalid <NULL> context" 16395message. 16396 16397Some systems may fail with "execution mutex already acquired" 16398message. 16399 16400 ACPI CA Core Subsystem: 16401 16402Added a new OSL Interface, AcpiOsGetThreadId. This was required 16403for the deadlock detection code. Defined to return a non-zero, 32- 16404bit thread ID for the currently executing thread. May be a non- 16405zero constant integer on single-thread systems. 16406 16407Implemented deadlock detection for internal subsystem mutexes. We 16408may add conditional compilation for this code (debug only) later. 16409 16410ASL/AML Mutex object semantics are now fully supported. This 16411includes multiple acquires/releases by owner and support for the 16412 16413Mutex SyncLevel parameter. 16414 16415A new "Force Release" mechanism automatically frees all ASL 16416Mutexes that have been acquired but not released when a thread 16417exits the interpreter. This forces conformance to the ACPI spec 16418("All mutexes must be released when an invocation exits") and 16419prevents deadlocked ASL threads. This mechanism can be expanded 16420(later) to monitor other resource acquisitions if OEM ASL code 16421continues to misbehave (which it will). 16422 16423Several new ACPI exception codes have been added for the Mutex 16424support. 16425 16426Recursive method calls are now allowed and supported (the ACPI 16427spec does in fact allow recursive method calls.) The number of 16428recursive calls is subject to the restrictions imposed by the 16429SERIALIZED method keyword and SyncLevel (ACPI 2.0) method 16430parameter. 16431 16432Implemented support for the SyncLevel parameter for control 16433methods (ACPI 2.0 feature) 16434 16435Fixed a deadlock problem when multiple threads attempted to use 16436the interpreter. 16437 16438Fixed a problem where the string length of a String package 16439element was not always set in a package returned from 16440AcpiEvaluateObject. 16441 16442Fixed a problem where the length of a String package element was 16443not always included in the length of the overall package returned 16444from AcpiEvaluateObject. 16445 16446Added external interfaces (Acpi*) to the ACPI debug memory 16447manager. This manager keeps a list of all outstanding 16448allocations, and can therefore detect memory leaks and attempts to 16449free memory blocks more than once. Useful for code such as the 16450power manager, etc. May not be appropriate for device drivers. 16451Performance with the debug code enabled is slow. 16452 16453The ACPI Global Lock is now an optional hardware element. 16454 16455 ASL Compiler Version X2015: 16456 16457Integrated changes to allow the compiler to be generated on 16458multiple platforms. 16459 16460Linux makefile added to generate the compiler on Linux 16461 16462 Source Code: 16463 16464All platform-specific headers have been moved to their own 16465subdirectory, Include/Platform. 16466 16467New source file added, Interpreter/ammutex.c 16468 16469New header file, Include/acstruct.h 16470 16471 Documentation: 16472 16473The programmer reference has been updated for the following new 16474interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree 16475 16476 ------------------------------------------ 16477Summary of changes for this label: 02_08_01 16478 16479Core ACPI CA Subsystem: Fixed a problem where an error was 16480incorrectly returned if the return resource buffer was larger than 16481the actual data (in the resource interfaces). 16482 16483References to named objects within packages are resolved to the 16484 16485full pathname string before packages are returned directly (via 16486the AcpiEvaluateObject interface) or indirectly via the resource 16487interfaces. 16488 16489Linux OS Services Layer (OSL): 16490 16491Improved /proc battery interface. 16492 16493 16494Added C-state debugging output and other miscellaneous fixes. 16495 16496ASL Compiler Version X2014: 16497 16498All defined method arguments can now be used as local variables, 16499including the ones that are not actually passed in as parameters. 16500The compiler tracks initialization of the arguments and issues an 16501exception if they are used without prior assignment (just like 16502locals). 16503 16504The -o option now specifies a filename prefix that is used for all 16505output files, including the AML output file. Otherwise, the 16506default behavior is as follows: 1) the AML goes to the file 16507specified in the DSDT. 2) all other output files use the input 16508source filename as the base. 16509 16510 ------------------------------------------ 16511Summary of changes for this label: 01_25_01 16512 16513Core ACPI CA Subsystem: Restructured the implementation of object 16514store support within the interpreter. This includes support for 16515the Store operator as well as any ASL operators that include a 16516target operand. 16517 16518Partially implemented support for Implicit Result-to-Target 16519conversion. This is when a result object is converted on the fly 16520to the type of an existing target object. Completion of this 16521support is pending further analysis of the ACPI specification 16522concerning this matter. 16523 16524CPU-specific code has been removed from the subsystem (hardware 16525directory). 16526 16527New Power Management Timer functions added 16528 16529Linux OS Services Layer (OSL): Moved system state transition code 16530to the core, fixed it, and modified Linux OSL accordingly. 16531 16532Fixed C2 and C3 latency calculations. 16533 16534 16535We no longer use the compilation date for the version message on 16536initialization, but retrieve the version from AcpiGetSystemInfo(). 16537 16538Incorporated for fix Sony VAIO machines. 16539 16540Documentation: The Programmer Reference has been updated and 16541reformatted. 16542 16543 16544ASL Compiler: Version X2013: Fixed a problem where the line 16545numbering and error reporting could get out of sync in the 16546presence of multiple include files. 16547 16548 ------------------------------------------ 16549Summary of changes for this label: 01_15_01 16550 16551Core ACPI CA Subsystem: 16552 16553Implemented support for type conversions in the execution of the 16554ASL Concatenate operator (The second operand is converted to 16555match the type of the first operand before concatenation.) 16556 16557Support for implicit source operand conversion is partially 16558implemented. The ASL source operand types Integer, Buffer, and 16559String are freely interchangeable for most ASL operators and are 16560converted by the interpreter on the fly as required. Implicit 16561Target operand conversion (where the result is converted to the 16562target type before storing) is not yet implemented. 16563 16564Support for 32-bit and 64-bit BCD integers is implemented. 16565 16566Problem fixed where a field read on an aligned field could cause a 16567read past the end of the field. 16568 16569New exception, AE_AML_NO_RETURN_VALUE, is returned when a method 16570does not return a value, but the caller expects one. (The ASL 16571compiler flags this as a warning.) 16572 16573ASL Compiler: 16574 16575Version X2011: 165761. Static typechecking of all operands is implemented. This 16577prevents the use of invalid objects (such as using a Package where 16578an Integer is required) at compile time instead of at interpreter 16579run-time. 165802. The ASL source line is printed with ALL errors and warnings. 165813. Bug fix for source EOF without final linefeed. 165824. Debug option is split into a parse trace and a namespace trace. 165835. Namespace output option (-n) includes initial values for 16584integers and strings. 165856. Parse-only option added for quick syntax checking. 165867. Compiler checks for duplicate ACPI name declarations 16587 16588Version X2012: 165891. Relaxed typechecking to allow interchangeability between 16590strings, integers, and buffers. These types are now converted by 16591the interpreter at runtime. 165922. Compiler reports time taken by each internal subsystem in the 16593debug output file. 16594 16595 16596 ------------------------------------------ 16597Summary of changes for this label: 12_14_00 16598 16599ASL Compiler: 16600 16601This is the first official release of the compiler. Since the 16602compiler requires elements of the Core Subsystem, this label 16603synchronizes everything. 16604 16605------------------------------------------ 16606Summary of changes for this label: 12_08_00 16607 16608 16609Fixed a problem where named references within the ASL definition 16610of both OperationRegions and CreateXXXFields did not work 16611properly. The symptom was an AE_AML_OPERAND_TYPE during 16612initialization of the region/field. This is similar (but not 16613related internally) to the problem that was fixed in the last 16614label. 16615 16616Implemented both 32-bit and 64-bit support for the BCD ASL 16617functions ToBCD and FromBCD. 16618 16619Updated all legal headers to include "2000" in the copyright 16620years. 16621 16622 ------------------------------------------ 16623Summary of changes for this label: 12_01_00 16624 16625Fixed a problem where method invocations within the ASL definition 16626of both OperationRegions and CreateXXXFields did not work 16627properly. The symptom was an AE_AML_OPERAND_TYPE during 16628initialization of the region/field: 16629 16630 nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments 16631[DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s) 16632(0x3005) 16633 16634Fixed a problem where operators with more than one nested 16635subexpression would fail. The symptoms were varied, by mostly 16636AE_AML_OPERAND_TYPE errors. This was actually a rather serious 16637problem that has gone unnoticed until now. 16638 16639 Subtract (Add (1,2), Multiply (3,4)) 16640 16641Fixed a problem where AcpiGetHandle didn't quite get fixed in the 16642previous build (The prefix part of a relative path was handled 16643incorrectly). 16644 16645Fixed a problem where Operation Region initialization failed if 16646the operation region name was a "namepath" instead of a simple 16647"nameseg". Symptom was an AE_NO_OPERAND error. 16648 16649Fixed a problem where an assignment to a local variable via the 16650indirect RefOf mechanism only worked for the first such 16651assignment. Subsequent assignments were ignored. 16652 16653 ------------------------------------------ 16654Summary of changes for this label: 11_15_00 16655 16656ACPI 2.0 table support with backwards support for ACPI 1.0 and the 166570.71 extensions. Note: although we can read ACPI 2.0 BIOS tables, 16658the AML interpreter does NOT have support for the new 2.0 ASL 16659grammar terms at this time. 16660 16661All ACPI hardware access is via the GAS structures in the ACPI 2.0 16662FADT. 16663 16664All physical memory addresses across all platforms are now 64 bits 16665wide. Logical address width remains dependent on the platform 16666(i.e., "void *"). 16667 16668AcpiOsMapMemory interface changed to a 64-bit physical address. 16669 16670The AML interpreter integer size is now 64 bits, as per the ACPI 166712.0 specification. 16672 16673For backwards compatibility with ACPI 1.0, ACPI tables with a 16674revision number less than 2 use 32-bit integers only. 16675 16676Fixed a problem where the evaluation of OpRegion operands did not 16677always resolve them to numbers properly. 16678 16679------------------------------------------ 16680Summary of changes for this label: 10_20_00 16681 16682Fix for CBN_._STA issue. This fix will allow correct access to 16683CBN_ OpRegions when the _STA returns 0x8. 16684 16685Support to convert ACPI constants (Ones, Zeros, One) to actual 16686values before a package object is returned 16687 16688Fix for method call as predicate to if/while construct causing 16689incorrect if/while behavior 16690 16691Fix for Else block package lengths sometimes calculated wrong (if 16692block > 63 bytes) 16693 16694Fix for Processor object length field, was always zero 16695 16696Table load abort if FACP sanity check fails 16697 16698Fix for problem with Scope(name) if name already exists 16699 16700Warning emitted if a named object referenced cannot be found 16701(resolved) during method execution. 16702 16703 16704 16705 16706 16707------------------------------------------ 16708Summary of changes for this label: 9_29_00 16709 16710New table initialization interfaces: AcpiInitializeSubsystem no 16711longer has any parameters AcpiFindRootPointer - Find the RSDP (if 16712necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP- 16713>RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by 16714AcpiLoadTables 16715 16716Note: These interface changes require changes to all existing OSDs 16717 16718The PCI_Config default address space handler is always installed 16719at the root namespace object. 16720 16721------------------------------------------- 16722Summary of changes for this label: 09_15_00 16723 16724The new initialization architecture is implemented. New 16725interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize) 16726AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace 16727 16728(Namespace is automatically loaded when a table is loaded) 16729 16730The ACPI_OPERAND_OBJECT has been optimized to shrink its size from 1673152 bytes to 32 bytes. There is usually one of these for every 16732namespace object, so the memory savings is significant. 16733 16734Implemented just-in-time evaluation of the CreateField operators. 16735 16736Bug fixes for IA-64 support have been integrated. 16737 16738Additional code review comments have been implemented 16739 16740The so-called "third pass parse" has been replaced by a final walk 16741through the namespace to initialize all operation regions (address 16742spaces) and fields that have not yet been initialized during the 16743execution of the various _INI and REG methods. 16744 16745New file - namespace/nsinit.c 16746 16747------------------------------------------- 16748Summary of changes for this label: 09_01_00 16749 16750Namespace manager data structures have been reworked to change the 16751primary object from a table to a single object. This has 16752resulted in dynamic memory savings of 3X within the namespace and 167532X overall in the ACPI CA subsystem. 16754 16755Fixed problem where the call to AcpiEvFindPciRootBuses was 16756inadvertently left commented out. 16757 16758Reduced the warning count when generating the source with the GCC 16759compiler. 16760 16761Revision numbers added to each module header showing the 16762SourceSafe version of the file. Please refer to this version 16763number when giving us feedback or comments on individual modules. 16764 16765The main object types within the subsystem have been renamed to 16766clarify their purpose: 16767 16768ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT 16769ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT 16770ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE 16771 16772NOTE: no changes to the initialization sequence are included in 16773this label. 16774 16775------------------------------------------- 16776Summary of changes for this label: 08_23_00 16777 16778Fixed problem where TerminateControlMethod was being called 16779multiple times per method 16780 16781Fixed debugger problem where single stepping caused a semaphore to 16782be oversignalled 16783 16784Improved performance through additional parse object caching - 16785added ACPI_EXTENDED_OP type 16786 16787------------------------------------------- 16788Summary of changes for this label: 08_10_00 16789 16790Parser/Interpreter integration: Eliminated the creation of 16791complete parse trees for ACPI tables and control methods. 16792Instead, parse subtrees are created and then deleted as soon as 16793they are processed (Either entered into the namespace or executed 16794by the interpreter). This reduces the use of dynamic kernel 16795memory significantly. (about 10X) 16796 16797Exception codes broken into classes and renumbered. Be sure to 16798recompile all code that includes acexcep.h. Hopefully we won't 16799have to renumber the codes again now that they are split into 16800classes (environment, programmer, AML code, ACPI table, and 16801internal). 16802 16803Fixed some additional alignment issues in the Resource Manager 16804subcomponent 16805 16806Implemented semaphore tracking in the AcpiExec utility, and fixed 16807several places where mutexes/semaphores were being unlocked 16808without a corresponding lock operation. There are no known 16809semaphore or mutex "leaks" at this time. 16810 16811Fixed the case where an ASL Return operator is used to return an 16812unnamed package. 16813 16814------------------------------------------- 16815Summary of changes for this label: 07_28_00 16816 16817Fixed a problem with the way addresses were calculated in 16818AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem 16819manifested itself when a Field was created with WordAccess or 16820DwordAccess, but the field unit defined within the Field was less 16821 16822than a Word or Dword. 16823 16824Fixed a problem in AmlDumpOperands() module's loop to pull 16825operands off of the operand stack to display information. The 16826problem manifested itself as a TLB error on 64-bit systems when 16827accessing an operand stack with two or more operands. 16828 16829Fixed a problem with the PCI configuration space handlers where 16830context was getting confused between accesses. This required a 16831change to the generic address space handler and address space 16832setup definitions. Handlers now get both a global handler context 16833(this is the one passed in by the user when executing 16834AcpiInstallAddressSpaceHandler() and a specific region context 16835that is unique to each region (For example, the _ADR, _SEG and 16836_BBN values associated with a specific region). The generic 16837function definitions have changed to the following: 16838 16839typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function, 16840UINT32 Address, UINT32 BitWidth, UINT32 *Value, void 16841*HandlerContext, // This used to be void *Context void 16842*RegionContext); // This is an additional parameter 16843 16844typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE 16845RegionHandle, UINT32 Function, void *HandlerContext, void 16846**RegionContext); // This used to be **ReturnContext 16847 16848------------------------------------------- 16849Summary of changes for this label: 07_21_00 16850 16851Major file consolidation and rename. All files within the 16852interpreter have been renamed as well as most header files. This 16853was done to prevent collisions with existing files in the host 16854OSs -- filenames such as "config.h" and "global.h" seem to be 16855quite common. The VC project files have been updated. All 16856makefiles will require modification. 16857 16858The parser/interpreter integration continues in Phase 5 with the 16859implementation of a complete 2-pass parse (the AML is parsed 16860twice) for each table; This avoids the construction of a huge 16861parse tree and therefore reduces the amount of dynamic memory 16862required by the subsystem. Greater use of the parse object cache 16863means that performance is unaffected. 16864 16865Many comments from the two code reviews have been rolled in. 16866 16867The 64-bit alignment support is complete. 16868 16869------------------------------------------- 16870Summary of changes for this label: 06_30_00 16871 16872With a nod and a tip of the hat to the technology of yesteryear, 16873we've added support in the source code for 80 column output 16874devices. The code is now mostly constrained to 80 columns or 16875less to support environments and editors that 1) cannot display 16876or print more than 80 characters on a single line, and 2) cannot 16877disable line wrapping. 16878 16879A major restructuring of the namespace data structure has been 16880completed. The result is 1) cleaner and more 16881understandable/maintainable code, and 2) a significant reduction 16882in the dynamic memory requirement for each named ACPI object 16883(almost half). 16884 16885------------------------------------------- 16886Summary of changes for this label: 06_23_00 16887 16888Linux support has been added. In order to obtain approval to get 16889the ACPI CA subsystem into the Linux kernel, we've had to make 16890quite a few changes to the base subsystem that will affect all 16891users (all the changes are generic and OS- independent). The 16892effects of these global changes have been somewhat far reaching. 16893Files have been merged and/or renamed and interfaces have been 16894renamed. The major changes are described below. 16895 16896Osd* interfaces renamed to AcpiOs* to eliminate namespace 16897pollution/confusion within our target kernels. All OSD 16898interfaces must be modified to match the new naming convention. 16899 16900Files merged across the subsystem. A number of the smaller source 16901and header files have been merged to reduce the file count and 16902increase the density of the existing files. There are too many 16903to list here. In general, makefiles that call out individual 16904files will require rebuilding. 16905 16906Interpreter files renamed. All interpreter files now have the 16907prefix am* instead of ie* and is*. 16908 16909Header files renamed: The acapi.h file is now acpixf.h. The 16910acpiosd.h file is now acpiosxf.h. We are removing references to 16911the acronym "API" since it is somewhat windowsy. The new name is 16912"external interface" or xface or xf in the filenames.j 16913 16914 16915All manifest constants have been forced to upper case (some were 16916mixed case.) Also, the string "ACPI_" has been prepended to many 16917(not all) of the constants, typedefs, and structs. 16918 16919The globals "DebugLevel" and "DebugLayer" have been renamed 16920"AcpiDbgLevel" and "AcpiDbgLayer" respectively. 16921 16922All other globals within the subsystem are now prefixed with 16923"AcpiGbl_" Internal procedures within the subsystem are now 16924prefixed with "Acpi" (with only a few exceptions). The original 16925two-letter abbreviation for the subcomponent remains after "Acpi" 16926- for example, CmCallocate became AcpiCmCallocate. 16927 16928Added a source code translation/conversion utility. Used to 16929generate the Linux source code, it can be modified to generate 16930other types of source as well. Can also be used to cleanup 16931existing source by removing extraneous spaces and blank lines. 16932Found in tools/acpisrc/* 16933 16934OsdUnMapMemory was renamed to OsdUnmapMemory and then 16935AcpiOsUnmapMemory. (UnMap became Unmap). 16936 16937A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore. 16938When set to one, this indicates that the caller wants to use the 16939 16940semaphore as a mutex, not a counting semaphore. ACPI CA uses 16941both types. However, implementers of this call may want to use 16942different OS primitives depending on the type of semaphore 16943requested. For example, some operating systems provide separate 16944 16945"mutex" and "semaphore" interfaces - where the mutex interface is 16946much faster because it doesn't have all the overhead of a full 16947semaphore implementation. 16948 16949Fixed a deadlock problem where a method that accesses the PCI 16950address space can block forever if it is the first access to the 16951space. 16952 16953------------------------------------------- 16954Summary of changes for this label: 06_02_00 16955 16956Support for environments that cannot handle unaligned data 16957accesses (e.g. firmware and OS environments devoid of alignment 16958handler technology namely SAL/EFI and the IA-64 Linux kernel) has 16959been added (via configurable macros) in these three areas: - 16960Transfer of data from the raw AML byte stream is done via byte 16961moves instead of word/dword/qword moves. - External objects are 16962aligned within the user buffer, including package elements (sub- 16963objects). - Conversion of name strings to UINT32 Acpi Names is now 16964done byte-wise. 16965 16966The Store operator was modified to mimic Microsoft's 16967implementation when storing to a Buffer Field. 16968 16969Added a check of the BM_STS bit before entering C3. 16970 16971The methods subdirectory has been obsoleted and removed. A new 16972file, cmeval.c subsumes the functionality. 16973 16974A 16-bit (DOS) version of AcpiExec has been developed. The 16975makefile is under the acpiexec directory. 16976