changes.txt revision 237412
1---------------------------------------- 220 June 2012. Summary of changes for version 20120620: 3 4This release is available at https://www.acpica.org/downloads 5The ACPI 5.0 specification is available at www.acpi.info 6 71) ACPICA Kernel-resident Subsystem: 8 9Implemented support to expand the "implicit notify" feature to allow multiple 10devices to be notified by a single GPE. This feature automatically generates a 11runtime device notification in the absence of a BIOS-provided GPE control 12method (_Lxx/_Exx) or a host-installed handler for the GPE. Implicit notify is 13provided by ACPICA for Windows compatibility, and is a workaround for BIOS AML 14code errors. See the description of the AcpiSetupGpeForWake interface in the 15APCICA reference. Bob Moore, Rafael Wysocki. ACPICA BZ 918. 16 17Changed some comments and internal function names to simplify and ensure 18correctness of the Linux code translation. No functional changes. 19 20Example Code and Data Size: These are the sizes for the OS-independent 21acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug 22version of the code includes the debug output trace mechanism and has a much 23larger code and data size. 24 25 Previous Release: 26 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total 27 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total 28 Current Release: 29 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total 30 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total 31 32 332) iASL Compiler/Disassembler and Tools: 34 35Disassembler: Added support to emit short, commented descriptions for the ACPI 36predefined names in order to improve the readability of the disassembled 37output. ACPICA BZ 959. Changes include: 38 1) Emit descriptions for all standard predefined names (_INI, _STA, _PRW, 39etc.) 40 2) Emit generic descriptions for the special names (_Exx, _Qxx, etc.) 41 3) Emit descriptions for the resource descriptor names (_MIN, _LEN, etc.) 42 43AcpiSrc: Fixed several long-standing Linux code translation issues. Argument 44descriptions in function headers are now translated properly to lower case and 45underscores. ACPICA BZ 961. Also fixes translation problems such as these: 46(old -> new) 47 i_aSL -> iASL 48 00-7_f -> 00-7F 49 16_k -> 16K 50 local_fADT -> local_FADT 51 execute_oSI -> execute_OSI 52 53iASL: Fixed a problem where null bytes were inadvertently emitted into some 54listing files. 55 56iASL: Added the existing debug options to the standard help screen. There are 57no longer two different help screens. ACPICA BZ 957. 58 59AcpiHelp: Fixed some typos in the various predefined name descriptions. Also 60expand some of the descriptions where appropriate. 61 62iASL: Fixed the -ot option (display compile times/statistics). Was not working 63properly for standard output; only worked for the debug file case. 64 65---------------------------------------- 6618 May 2012. Summary of changes for version 20120518: 67 68 691) ACPICA Core Subsystem: 70 71Added a new OSL interface, AcpiOsWaitEventsComplete. This interface is defined 72to block until asynchronous events such as notifies and GPEs have completed. 73Within ACPICA, it is only called before a notify or GPE handler is 74removed/uninstalled. It also may be useful for the host OS within related 75drivers such as the Embedded Controller driver. See the ACPICA reference for 76additional information. ACPICA BZ 868. 77 78ACPI Tables: Added a new error message for a possible overflow failure during 79the conversion of FADT 32-bit legacy register addresses to internal common 64- 80bit GAS structure representation. The GAS has a one-byte "bit length" field, 81thus limiting the register length to 255 bits. ACPICA BZ 953. 82 83Example Code and Data Size: These are the sizes for the OS-independent 84acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug 85version of the code includes the debug output trace mechanism and has a much 86larger code and data size. 87 88 Previous Release: 89 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 90 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total 91 Current Release: 92 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total 93 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total 94 95 962) iASL Compiler/Disassembler and Tools: 97 98iASL: Added the ACPI 5.0 "PCC" keyword for use in the Register() ASL macro. 99This keyword was added late in the ACPI 5.0 release cycle and was not 100implemented until now. 101 102Disassembler: Added support for Operation Region externals. Adds missing 103support for operation regions that are defined in another table, and 104referenced locally via a Field or BankField ASL operator. Now generates the 105correct External statement. 106 107Disassembler: Several additional fixes for the External() statement generation 108related to some ASL operators. Also, order the External() statements 109alphabetically in the disassembler output. Fixes the External() generation for 110the Create* field, Alias, and Scope operators: 111 1) Create* buffer field operators - fix type mismatch warning on disassembly 112 2) Alias - implement missing External support 113 3) Scope - fix to make sure all necessary externals are emitted. 114 115iASL: Improved pathname support. For include files, merge the prefix pathname 116with the file pathname and eliminate unnecessary components. Convert 117backslashes in all pathnames to forward slashes, for readability. Include file 118pathname changes affect both #include and Include() type operators. 119 120iASL/DTC/Preprocessor: Gracefully handle early EOF. Handle an EOF at the end 121of a valid line by inserting a newline and then returning the EOF during the 122next call to GetNextLine. Prevents the line from being ignored due to EOF 123condition. 124 125iASL: Implemented some changes to enhance the IDE support (-vi option.) Error 126and Warning messages are now correctly recognized for both the source code 127browser and the global error and warning counts. 128 129---------------------------------------- 13020 April 2012. Summary of changes for version 20120420: 131 132 1331) ACPICA Core Subsystem: 134 135Implemented support for multiple notify handlers. This change adds support to 136allow multiple system and device notify handlers on Device, Thermal Zone, and 137Processor objects. This can simplify the host OS notification implementation. 138Also re-worked and restructured the entire notify support code to simplify 139handler installation, handler removal, notify event queuing, and notify 140dispatch to handler(s). Note: there can still only be two global notify 141handlers - one for system notifies and one for device notifies. There are no 142changes to the existing handler install/remove interfaces. Lin Ming, Bob 143Moore, Rafael Wysocki. 144 145Fixed a regression in the package repair code where the object reference 146count was calculated incorrectly. Regression was introduced in the commit 147"Support to add Package wrappers". 148 149Fixed a couple possible memory leaks in the AML parser, in the error recovery 150path. Jesper Juhl, Lin Ming. 151 152Example Code and Data Size: These are the sizes for the OS-independent 153acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 154debug version of the code includes the debug output trace mechanism and has a 155much larger code and data size. 156 157 Previous Release: 158 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 159 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 160 Current Release: 161 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 162 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total 163 164 1652) iASL Compiler/Disassembler and Tools: 166 167iASL: Fixed a problem with the resource descriptor support where the length 168of the StartDependentFn and StartDependentFnNoPrio descriptors were not 169included in cumulative descriptor offset, resulting in incorrect values for 170resource tags within resource descriptors appearing after a StartDependent* 171descriptor. Reported by Petr Vandrovec. ACPICA BZ 949. 172 173iASL and Preprocessor: Implemented full support for the #line directive to 174correctly track original source file line numbers through the .i preprocessor 175output file - for error and warning messages. 176 177iASL: Expand the allowable byte constants for address space IDs. Previously, 178the allowable range was 0x80-0xFF (user-defined spaces), now the range is 1790x0A-0xFF to allow for custom and new IDs without changing the compiler. 180 181iASL: Add option to treat all warnings as errors (-we). ACPICA BZ 948. 182 183iASL: Add option to completely disable the preprocessor (-Pn). 184 185iASL: Now emit all error/warning messages to standard error (stderr) by 186default (instead of the previous stdout). 187 188ASL Test Suite (ASLTS): Reduce iASL warnings due to use of Switch(). Update 189for resource descriptor offset fix above. Update/cleanup error output 190routines. Enable and send iASL errors/warnings to an error logfile 191(error.txt). Send all other iASL output to a logfile (compiler.txt). Fixed 192several extraneous "unrecognized operator" messages. 193 194---------------------------------------- 19520 March 2012. Summary of changes for version 20120320: 196 197 1981) ACPICA Core Subsystem: 199 200Enhanced the sleep/wake interfaces to optionally execute the _GTS method 201(Going To Sleep) and the _BFS method (Back From Sleep). Windows apparently 202does not execute these methods, and therefore these methods are often 203untested. It has been seen on some systems where the execution of these 204methods causes errors and also prevents the machine from entering S5. It is 205therefore suggested that host operating systems do not execute these methods 206by default. In the future, perhaps these methods can be optionally executed 207based on the age of the system and/or what is the newest version of Windows 208that the BIOS asks for via _OSI. Changed interfaces: AcpiEnterSleepState and 209AcpileaveSleepStatePrep. See the ACPICA reference and Linux BZ 13041. Lin 210Ming. 211 212Fixed a problem where the length of the local/common FADT was set too early. 213The local FADT table length cannot be set to the common length until the 214original length has been examined. There is code that checks the table length 215and sets various fields appropriately. This can affect older machines with 216early FADT versions. For example, this can cause inadvertent writes to the 217CST_CNT register. Julian Anastasov. 218 219Fixed a mapping issue related to a physical table override. Use the deferred 220mapping mechanism for tables loaded via the physical override OSL interface. 221This allows for early mapping before the virtual memory manager is available. 222Thomas Renninger, Bob Moore. 223 224Enhanced the automatic return-object repair code: Repair a common problem with 225predefined methods that are defined to return a variable-length Package of 226sub-objects. If there is only one sub-object, some BIOS ASL code mistakenly 227simply returns the single object instead of a Package with one sub-object. 228This new support will repair this error by wrapping a Package object around 229the original object, creating the correct and expected Package with one sub- 230object. Names that can be repaired in this manner include: _ALR, _CSD, _HPX, 231_MLS, _PLD, _PRT, _PSS, _TRT, _TSS, _BCL, _DOD, _FIX, and _Sx. ACPICA BZ 939. 232 233Changed the exception code returned for invalid ACPI paths passed as 234parameters to external interfaces such as AcpiEvaluateObject. Was 235AE_BAD_PARAMETER, now is the more sensible AE_BAD_PATHNAME. 236 237Example Code and Data Size: These are the sizes for the OS-independent 238acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug 239version of the code includes the debug output trace mechanism and has a much 240larger code and data size. 241 242 Previous Release: 243 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total 244 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 245 Current Release: 246 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 247 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 248 249 2502) iASL Compiler/Disassembler and Tools: 251 252iASL: Added the infrastructure and initial implementation of a integrated C- 253like preprocessor. This will simplify BIOS development process by eliminating 254the need for a separate preprocessing step during builds. On Windows, it also 255eliminates the need to install a separate C compiler. ACPICA BZ 761. Some 256features including full #define() macro support are still under development. 257These preprocessor directives are supported: 258 #define 259 #elif 260 #else 261 #endif 262 #error 263 #if 264 #ifdef 265 #ifndef 266 #include 267 #pragma message 268 #undef 269 #warning 270In addition, these new command line options are supported: 271 -D <symbol> Define symbol for preprocessor use 272 -li Create preprocessed output file (*.i) 273 -P Preprocess only and create preprocessor output file (*.i) 274 275Table Compiler: Fixed a problem where the equals operator within an expression 276did not work properly. 277 278Updated iASL to use the current versions of Bison/Flex. Updated the Windows 279project file to invoke these tools from the standard location. ACPICA BZ 904. 280Versions supported: 281 Flex for Windows: V2.5.4 282 Bison for Windows: V2.4.1 283 284---------------------------------------- 28515 February 2012. Summary of changes for version 20120215: 286 287 2881) ACPICA Core Subsystem: 289 290There have been some major changes to the sleep/wake support code, as 291described below (a - e). 292 293a) The AcpiLeaveSleepState has been split into two interfaces, similar to 294AcpiEnterSleepStatePrep and AcpiEnterSleepState. The new interface is 295AcpiLeaveSleepStatePrep. This allows the host to perform actions between the 296time the _BFS method is called and the _WAK method is called. NOTE: all hosts 297must update their wake/resume code or else sleep/wake will not work properly. 298Rafael Wysocki. 299 300b) In AcpiLeaveSleepState, now enable all runtime GPEs before calling the _WAK 301method. Some machines require that the GPEs are enabled before the _WAK method 302is executed. Thomas Renninger. 303 304c) In AcpiLeaveSleepState, now always clear the WAK_STS (wake status) bit. 305Some BIOS code assumes that WAK_STS will be cleared on resume and use it to 306determine whether the system is rebooting or resuming. Matthew Garrett. 307 308d) Move the invocations of _GTS (Going To Sleep) and _BFS (Back From Sleep) to 309match the ACPI specification requirement. Rafael Wysocki. 310 311e) Implemented full support for the ACPI 5.0 SleepStatus and SleepControl 312registers within the V5 FADT. This support adds two new files: 313hardware/hwesleep.c implements the support for the new registers. Moved all 314sleep/wake external interfaces to hardware/hwxfsleep.c. 315 316 317Added a new OSL interface for ACPI table overrides, 318AcpiOsPhysicalTableOverride. This interface allows the host to override a 319table via a physical address, instead of the logical address required by 320AcpiOsTableOverride. This simplifies the host implementation. Initial 321implementation by Thomas Renninger. The ACPICA implementation creates a single 322shared function for table overrides that attempts both a logical and a 323physical override. 324 325Expanded the OSL memory read/write interfaces to 64-bit data 326(AcpiOsReadMemory, AcpiOsWriteMemory.) This enables full 64-bit memory 327transfer support for GAS register structures passed to AcpiRead and AcpiWrite. 328 329Implemented the ACPI_REDUCED_HARDWARE option to allow the creation of a custom 330build of ACPICA that supports only the ACPI 5.0 reduced hardware (SoC) model. 331See the ACPICA reference for details. ACPICA BZ 942. This option removes about 33210% of the code and 5% of the static data, and the following hardware ACPI 333features become unavailable: 334 PM Event and Control registers 335 SCI interrupt (and handler) 336 Fixed Events 337 General Purpose Events (GPEs) 338 Global Lock 339 ACPI PM timer 340 FACS table (Waking vectors and Global Lock) 341 342Updated the unix tarball directory structure to match the ACPICA git source 343tree. This ensures that the generic unix makefiles work properly (in 344generate/unix). Also updated the Linux makefiles to match. ACPICA BZ 867. 345 346Updated the return value of the _REV predefined method to integer value 5 to 347reflect ACPI 5.0 support. 348 349Moved the external ACPI PM timer interface prototypes to the public acpixf.h 350file where they belong. 351 352Example Code and Data Size: These are the sizes for the OS-independent 353acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug 354version of the code includes the debug output trace mechanism and has a much 355larger code and data size. 356 357 Previous Release: 358 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total 359 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total 360 Current Release: 361 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total 362 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 363 364 3652) iASL Compiler/Disassembler and Tools: 366 367Disassembler: Fixed a problem with the new ACPI 5.0 serial resource 368descriptors (I2C, SPI, UART) where the resource produce/consumer bit was 369incorrectly displayed. 370 371AcpiHelp: Add display of ACPI/PNP device IDs that are defined in the ACPI 372specification. 373 374---------------------------------------- 37511 January 2012. Summary of changes for version 20120111: 376 377 3781) ACPICA Core Subsystem: 379 380Implemented a new mechanism to allow host device drivers to check for address 381range conflicts with ACPI Operation Regions. Both SystemMemory and SystemIO 382address spaces are supported. A new external interface, AcpiCheckAddressRange, 383allows drivers to check an address range against the ACPI namespace. See the 384ACPICA reference for additional details. Adds one new file, 385utilities/utaddress.c. Lin Ming, Bob Moore. 386 387Fixed several issues with the ACPI 5.0 FADT support: Add the sleep Control and 388Status registers, update the ACPI 5.0 flags, and update internal data 389structures to handle an FADT larger than 256 bytes. The size of the ACPI 5.0 390FADT is 268 bytes. 391 392Updated all ACPICA copyrights and signons to 2012. Added the 2012 copyright to 393all module headers and signons, including the standard Linux header. This 394affects virtually every file in the ACPICA core subsystem, iASL compiler, and 395all ACPICA utilities. 396 397Example Code and Data Size: These are the sizes for the OS-independent 398acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug 399version of the code includes the debug output trace mechanism and has a much 400larger code and data size. 401 402 Previous Release: 403 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total 404 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total 405 Current Release: 406 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total 407 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total 408 409 4102) iASL Compiler/Disassembler and Tools: 411 412Disassembler: fixed a problem with the automatic resource tag generation 413support. Fixes a problem where the resource tags are inadvertently not 414constructed if the table being disassembled contains external references to 415control methods. Moved the actual construction of the tags to after the final 416namespace is constructed (after 2nd parse is invoked due to external control 417method references.) ACPICA BZ 941. 418 419Table Compiler: Make all "generic" operators caseless. These are the operators 420like UINT8, String, etc. Making these caseless improves ease-of-use. ACPICA BZ 421934. 422 423---------------------------------------- 42423 November 2011. Summary of changes for version 20111123: 425 4260) ACPI 5.0 Support: 427 428This release contains full support for the ACPI 5.0 specification, as 429summarized below. 430 431Reduced Hardware Support: 432------------------------- 433 434This support allows for ACPI systems without the usual ACPI hardware. This 435support is enabled by a flag in the revision 5 FADT. If it is set, ACPICA will 436not attempt to initialize or use any of the usual ACPI hardware. Note, when 437this flag is set, all of the following ACPI hardware is assumed to be not 438present and is not initialized or accessed: 439 440 General Purpose Events (GPEs) 441 Fixed Events (PM1a/PM1b and PM Control) 442 Power Management Timer and Console Buttons (power/sleep) 443 Real-time Clock Alarm 444 Global Lock 445 System Control Interrupt (SCI) 446 The FACS is assumed to be non-existent 447 448ACPI Tables: 449------------ 450 451All new tables and updates to existing tables are fully supported in the 452ACPICA headers (for use by device drivers), the disassembler, and the iASL 453Data Table Compiler. ACPI 5.0 defines these new tables: 454 455 BGRT /* Boot Graphics Resource Table */ 456 DRTM /* Dynamic Root of Trust for Measurement table */ 457 FPDT /* Firmware Performance Data Table */ 458 GTDT /* Generic Timer Description Table */ 459 MPST /* Memory Power State Table */ 460 PCCT /* Platform Communications Channel Table */ 461 PMTT /* Platform Memory Topology Table */ 462 RASF /* RAS Feature table */ 463 464Operation Regions/SpaceIDs: 465--------------------------- 466 467All new operation regions are fully supported by the iASL compiler, the 468disassembler, and the ACPICA runtime code (for dispatch to region handlers.) 469The new operation region Space IDs are: 470 471 GeneralPurposeIo 472 GenericSerialBus 473 474Resource Descriptors: 475--------------------- 476 477All new ASL resource descriptors are fully supported by the iASL compiler, the 478ASL/AML disassembler, and the ACPICA runtime Resource Manager code (including 479all new predefined resource tags). New descriptors are: 480 481 FixedDma 482 GpioIo 483 GpioInt 484 I2cSerialBus 485 SpiSerialBus 486 UartSerialBus 487 488ASL/AML Operators, New and Modified: 489------------------------------------ 490 491One new operator is added, the Connection operator, which is used to associate 492a GeneralPurposeIo or GenericSerialBus resource descriptor with individual 493field objects within an operation region. Several new protocols are associated 494with the AccessAs operator. All are fully supported by the iASL compiler, 495disassembler, and runtime ACPICA AML interpreter: 496 497 Connection // Declare Field Connection attributes 498 AccessAs: AttribBytes (n) // Read/Write N-Bytes Protocol 499 AccessAs: AttribRawBytes (n) // Raw Read/Write N-Bytes Protocol 500 AccessAs: AttribRawProcessBytes (n) // Raw Process Call Protocol 501 RawDataBuffer // Data type for Vendor Data fields 502 503Predefined ASL/AML Objects: 504--------------------------- 505 506All new predefined objects/control-methods are supported by the iASL compiler 507and the ACPICA runtime validation/repair (arguments and return values.) New 508predefined names include the following: 509 510Standard Predefined Names (Objects or Control Methods): 511 _AEI, _CLS, _CPC, _CWS, _DEP, 512 _DLM, _EVT, _GCP, _CRT, _GWS, 513 _HRV, _PRE, _PSE, _SRT, _SUB. 514 515Resource Tags (Names used to access individual fields within resource 516descriptors): 517 _DBT, _DPL, _DRS, _END, _FLC, 518 _IOR, _LIN, _MOD, _PAR, _PHA, 519 _PIN, _PPI, _POL, _RXL, _SLV, 520 _SPE, _STB, _TXL, _VEN. 521 522ACPICA External Interfaces: 523--------------------------- 524 525Several new interfaces have been defined for use by ACPI-related device 526drivers and other host OS services: 527 528AcpiAcquireMutex and AcpiReleaseMutex: These interfaces allow the host OS to 529acquire and release AML mutexes that are defined in the DSDT/SSDT tables 530provided by the BIOS. They are intended to be used in conjunction with the 531ACPI 5.0 _DLM (Device Lock Method) in order to provide transaction-level 532mutual exclusion with the AML code/interpreter. 533 534AcpiGetEventResources: Returns the (formatted) resource descriptors as defined 535by the ACPI 5.0 _AEI object (ACPI Event Information). This object provides 536resource descriptors associated with hardware-reduced platform events, similar 537to the AcpiGetCurrentResources interface. 538 539Operation Region Handlers: For General Purpose IO and Generic Serial Bus 540operation regions, information about the Connection() object and any optional 541length information is passed to the region handler within the Context 542parameter. 543 544AcpiBufferToResource: This interface converts a raw AML buffer containing a 545resource template or resource descriptor to the ACPI_RESOURCE internal format 546suitable for use by device drivers. Can be used by an operation region handler 547to convert the Connection() buffer object into a ACPI_RESOURCE. 548 549Miscellaneous/Tools/TestSuites: 550------------------------------- 551 552Support for extended _HID names (Four alpha characters instead of three). 553Support for ACPI 5.0 features in the AcpiExec and AcpiHelp utilities. 554Support for ACPI 5.0 features in the ASLTS test suite. 555Fully updated documentation (ACPICA and iASL reference documents.) 556 557ACPI Table Definition Language: 558------------------------------- 559 560Support for this language was implemented and released as a subsystem of the 561iASL compiler in 2010. (See the iASL compiler User Guide.) 562 563 564Non-ACPI 5.0 changes for this release: 565-------------------------------------- 566 5671) ACPICA Core Subsystem: 568 569Fix a problem with operation region declarations where a failure can occur if 570the region name and an argument that evaluates to an object (such as the 571region address) are in different namespace scopes. Lin Ming, ACPICA BZ 937. 572 573Do not abort an ACPI table load if an invalid space ID is found within. This 574will be caught later if the offending method is executed. ACPICA BZ 925. 575 576Fixed an issue with the FFixedHW space ID where the ID was not always 577recognized properly (Both ACPICA and iASL). ACPICA BZ 926. 578 579Fixed a problem with the 32-bit generation of the unix-specific OSL 580(osunixxf.c). Lin Ming, ACPICA BZ 936. 581 582Several changes made to enable generation with the GCC 4.6 compiler. ACPICA BZ 583935. 584 585New error messages: Unsupported I/O requests (not 8/16/32 bit), and Index/Bank 586field registers out-of-range. 587 5882) iASL Compiler/Disassembler and Tools: 589 590iASL: Implemented the __PATH__ operator, which returns the full pathname of 591the current source file. 592 593AcpiHelp: Automatically display expanded keyword information for all ASL 594operators. 595 596Debugger: Add "Template" command to disassemble/dump resource template 597buffers. 598 599Added a new master script to generate and execute the ASLTS test suite. 600Automatically handles 32- and 64-bit generation. See tests/aslts.sh 601 602iASL: Fix problem with listing generation during processing of the Switch() 603operator where AML listing was disabled until the entire Switch block was 604completed. 605 606iASL: Improve support for semicolon statement terminators. Fix "invalid 607character" message for some cases when the semicolon is used. Semicolons are 608now allowed after every <Term> grammar element. ACPICA BZ 927. 609 610iASL: Fixed some possible aliasing warnings during generation. ACPICA BZ 923. 611 612Disassembler: Fix problem with disassembly of the DataTableRegion operator 613where an inadvertent "Unhandled deferred opcode" message could be generated. 614 6153) Example Code and Data Size 616 617These are the sizes for the OS-independent acpica.lib produced by the 618Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code 619includes the debug output trace mechanism and has a much larger code and data 620size. 621 622 Previous Release: 623 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 624 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 625 Current Release: 626 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total 627 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total 628 629---------------------------------------- 63022 September 2011. Summary of changes for version 20110922: 631 6320) ACPI 5.0 News: 633 634Support for ACPI 5.0 in ACPICA has been underway for several months and will 635be released at the same time that ACPI 5.0 is officially released. 636 637The ACPI 5.0 specification is on track for release in the next few months. 638 6391) ACPICA Core Subsystem: 640 641Fixed a problem where the maximum sleep time for the Sleep() operator was 642intended to be limited to two seconds, but was inadvertently limited to 20 643seconds instead. 644 645Linux and Unix makefiles: Added header file dependencies to ensure correct 646generation of ACPICA core code and utilities. Also simplified the makefiles 647considerably through the use of the vpath variable to specify search paths. 648ACPICA BZ 924. 649 6502) iASL Compiler/Disassembler and Tools: 651 652iASL: Implemented support to check the access length for all fields created to 653access named Resource Descriptor fields. For example, if a resource field is 654defined to be two bits, a warning is issued if a CreateXxxxField() is used 655with an incorrect bit length. This is implemented for all current resource 656descriptor names. ACPICA BZ 930. 657 658Disassembler: Fixed a byte ordering problem with the output of 24-bit and 56- 659bit integers. 660 661iASL: Fixed a couple of issues associated with variable-length package 662objects. 1) properly handle constants like One, Ones, Zero -- do not make a 663VAR_PACKAGE when these are used as a package length. 2) Allow the VAR_PACKAGE 664opcode (in addition to PACKAGE) when validating object types for predefined 665names. 666 667iASL: Emit statistics for all output files (instead of just the ASL input and 668AML output). Includes listings, hex files, etc. 669 670iASL: Added -G option to the table compiler to allow the compilation of custom 671ACPI tables. The only part of a table that is required is the standard 36-byte 672ACPI header. 673 674AcpiXtract: Ported to the standard ACPICA environment (with ACPICA headers), 675which also adds correct 64-bit support. Also, now all output filenames are 676completely lower case. 677 678AcpiExec: Ignore any non-AML tables (tables other than DSDT or SSDT) when 679loading table files. A warning is issued for any such tables. The only 680exception is an FADT. This also fixes a possible fault when attempting to load 681non-AML tables. ACPICA BZ 932. 682 683AcpiHelp: Added the AccessAs and Offset operators. Fixed a problem where a 684missing table terminator could cause a fault when using the -p option. 685 686AcpiSrc: Fixed a possible divide-by-zero fault when generating file 687statistics. 688 6893) Example Code and Data Size 690 691These are the sizes for the OS-independent acpica.lib produced by the 692Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code 693includes the debug output trace mechanism and has a much larger code and data 694size. 695 696 Previous Release (VC 9.0): 697 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 698 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 699 Current Release (VC 9.0): 700 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 701 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 702 703 704---------------------------------------- 70523 June 2011. Summary of changes for version 20110623: 706 7071) ACPI CA Core Subsystem: 708 709Updated the predefined name repair mechanism to not attempt repair of a _TSS 710return object if a _PSS object is present. We can only sort the _TSS return 711package if there is no _PSS within the same scope. This is because if _PSS is 712present, the ACPI specification dictates that the _TSS Power Dissipation field 713is to be ignored, and therefore some BIOSs leave garbage values in the _TSS 714Power field(s). In this case, it is best to just return the _TSS package as- 715is. Reported by, and fixed with assistance from Fenghua Yu. 716 717Added an option to globally disable the control method return value validation 718and repair. This runtime option can be used to disable return value repair if 719this is causing a problem on a particular machine. Also added an option to 720AcpiExec (-dr) to set this disable flag. 721 722All makefiles and project files: Major changes to improve generation of ACPICA 723tools. ACPICA BZ 912: 724 Reduce default optimization levels to improve compatibility 725 For Linux, add strict-aliasing=0 for gcc 4 726 Cleanup and simplify use of command line defines 727 Cleanup multithread library support 728 Improve usage messages 729 730Linux-specific header: update handling of THREAD_ID and pthread. For the 32- 731bit case, improve casting to eliminate possible warnings, especially with the 732acpica tools. 733 734Example Code and Data Size: These are the sizes for the OS-independent 735acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug 736version of the code includes the debug output trace mechanism and has a much 737larger code and data size. 738 739 Previous Release (VC 9.0): 740 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total 741 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 742 Current Release (VC 9.0): 743 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 744 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 745 7462) iASL Compiler/Disassembler and Tools: 747 748With this release, a new utility named "acpihelp" has been added to the ACPICA 749package. This utility summarizes the ACPI specification chapters for the ASL 750and AML languages. It generates under Linux/Unix as well as Windows, and 751provides the following functionality: 752 Find/display ASL operator(s) -- with description and syntax. 753 Find/display ASL keyword(s) -- with exact spelling and descriptions. 754 Find/display ACPI predefined name(s) -- with description, number 755 of arguments, and the return value data type. 756 Find/display AML opcode name(s) -- with opcode, arguments, and grammar. 757 Decode/display AML opcode -- with opcode name, arguments, and grammar. 758 759Service Layers: Make multi-thread support configurable. Conditionally compile 760the multi-thread support so that threading libraries will not be linked if not 761necessary. The only tool that requires multi-thread support is AcpiExec. 762 763iASL: Update yyerrror/AslCompilerError for "const" errors. Newer versions of 764Bison appear to want the interface to yyerror to be a const char * (or at 765least this is a problem when generating iASL on some systems.) ACPICA BZ 923 766Pierre Lejeune. 767 768Tools: Fix for systems where O_BINARY is not defined. Only used for Windows 769versions of the tools. 770 771---------------------------------------- 77227 May 2011. Summary of changes for version 20110527: 773 7741) ACPI CA Core Subsystem: 775 776ASL Load() operator: Reinstate most restrictions on the incoming ACPI table 777signature. Now, only allow SSDT, OEMx, and a null signature. History: 778 1) Originally, we checked the table signature for "SSDT" or "PSDT". 779 (PSDT is now obsolete.) 780 2) We added support for OEMx tables, signature "OEM" plus a fourth 781 "don't care" character. 782 3) Valid tables were encountered with a null signature, so we just 783 gave up on validating the signature, (05/2008). 784 4) We encountered non-AML tables such as the MADT, which caused 785 interpreter errors and kernel faults. So now, we once again allow 786 only SSDT, OEMx, and now, also a null signature. (05/2011). 787 788Added the missing _TDL predefined name to the global name list in order to 789enable validation. Affects both the core ACPICA code and the iASL compiler. 790 791Example Code and Data Size: These are the sizes for the OS-independent 792acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug 793version of the code includes the debug output trace mechanism and has a much 794larger code and data size. 795 796 Previous Release (VC 9.0): 797 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total 798 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total 799 Current Release (VC 9.0): 800 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total 801 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 802 8032) iASL Compiler/Disassembler and Tools: 804 805Debugger/AcpiExec: Implemented support for "complex" method arguments on the 806debugger command line. This adds support beyond simple integers -- including 807Strings, Buffers, and Packages. Includes support for nested packages. 808Increased the default command line buffer size to accommodate these arguments. 809See the ACPICA reference for details and syntax. ACPICA BZ 917. 810 811Debugger/AcpiExec: Implemented support for "default" method arguments for the 812Execute/Debug command. Now, the debugger will always invoke a control method 813with the required number of arguments -- even if the command line specifies 814none or insufficient arguments. It uses default integer values for any missing 815arguments. Also fixes a bug where only six method arguments maximum were 816supported instead of the required seven. 817 818Debugger/AcpiExec: Add a maximum buffer length parameter to AcpiOsGetLine and 819also return status in order to prevent buffer overruns. See the ACPICA 820reference for details and syntax. ACPICA BZ 921 821 822iASL: Cleaned up support for Berkeley yacc. A general cleanup of code and 823makefiles to simplify support for the two different but similar parser 824generators, bison and yacc. 825 826Updated the generic unix makefile for gcc 4. The default gcc version is now 827expected to be 4 or greater, since options specific to gcc 4 are used. 828 829---------------------------------------- 83013 April 2011. Summary of changes for version 20110413: 831 8321) ACPI CA Core Subsystem: 833 834Implemented support to execute a so-called "orphan" _REG method under the EC 835device. This change will force the execution of a _REG method underneath the 836EC 837device even if there is no corresponding operation region of type 838EmbeddedControl. Fixes a problem seen on some machines and apparently is 839compatible with Windows behavior. ACPICA BZ 875. 840 841Added more predefined methods that are eligible for automatic NULL package 842element removal. This change adds another group of predefined names to the 843list 844of names that can be repaired by having NULL package elements dynamically 845removed. This group are those methods that return a single variable-length 846package containing simple data types such as integers, buffers, strings. This 847includes: _ALx, _BCL, _CID,_ DOD, _EDL, _FIX, _PCL, _PLD, _PMD, _PRx, _PSL, 848_Sx, 849and _TZD. ACPICA BZ 914. 850 851Split and segregated all internal global lock functions to a new file, 852evglock.c. 853 854Updated internal address SpaceID for DataTable regions. Moved this internal 855space 856id in preparation for ACPI 5.0 changes that will include some new space IDs. 857This 858change should not affect user/host code. 859 860Example Code and Data Size: These are the sizes for the OS-independent 861acpica.lib 862produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug version of 863the code includes the debug output trace mechanism and has a much larger code 864and 865data size. 866 867 Previous Release (VC 9.0): 868 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total 869 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total 870 Current Release (VC 9.0): 871 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total 872 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total 873 8742) iASL Compiler/Disassembler and Tools: 875 876iASL/DTC: Major update for new grammar features. Allow generic data types in 877custom ACPI tables. Field names are now optional. Any line can be split to 878multiple lines using the continuation char (\). Large buffers now use line- 879continuation character(s) and no colon on the continuation lines. See the 880grammar 881update in the iASL compiler reference. ACPI BZ 910,911. Lin Ming, Bob Moore. 882 883iASL: Mark ASL "Return()" and the simple "Return" as "Null" return statements. 884Since the parser stuffs a "zero" as the return value for these statements (due 885to 886the underlying AML grammar), they were seen as "return with value" by the iASL 887semantic checking. They are now seen correctly as "null" return statements. 888 889iASL: Check if a_REG declaration has a corresponding Operation Region. Adds a 890check for each _REG to ensure that there is in fact a corresponding operation 891region declaration in the same scope. If not, the _REG method is not very 892useful 893since it probably won't be executed. ACPICA BZ 915. 894 895iASL/DTC: Finish support for expression evaluation. Added a new expression 896parser 897that implements c-style operator precedence and parenthesization. ACPICA 898bugzilla 899908. 900 901Disassembler/DTC: Remove support for () and <> style comments in data tables. 902Now 903that DTC has full expression support, we don't want to have comment strings 904that 905start with a parentheses or a less-than symbol. Now, only the standard /* and 906// 907comments are supported, as well as the bracket [] comments. 908 909AcpiXtract: Fix for RSDP and dynamic SSDT extraction. These tables have 910"unusual" 911headers in the acpidump file. Update the header validation to support these 912tables. Problem introduced in previous AcpiXtract version in the change to 913support "wrong checksum" error messages emitted by acpidump utility. 914 915iASL: Add a * option to generate all template files (as a synonym for ALL) as 916in 917"iasl -T *" or "iasl -T ALL". 918 919iASL/DTC: Do not abort compiler on fatal errors. We do not want to completely 920abort the compiler on "fatal" errors, simply should abort the current compile. 921This allows multiple compiles with a single (possibly wildcard) compiler 922invocation. 923 924---------------------------------------- 92516 March 2011. Summary of changes for version 20110316: 926 9271) ACPI CA Core Subsystem: 928 929Fixed a problem caused by a _PRW method appearing at the namespace root scope 930during the setup of wake GPEs. A fault could occur if a _PRW directly under 931the 932root object was passed to the AcpiSetupGpeForWake interface. Lin Ming. 933 934Implemented support for "spurious" Global Lock interrupts. On some systems, a 935global lock interrupt can occur without the pending flag being set. Upon a GL 936interrupt, we now ensure that a thread is actually waiting for the lock before 937signaling GL availability. Rafael Wysocki, Bob Moore. 938 939Example Code and Data Size: These are the sizes for the OS-independent 940acpica.lib 941produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug version of 942the code includes the debug output trace mechanism and has a much larger code 943and 944data size. 945 946 Previous Release (VC 9.0): 947 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 948 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 949 Current Release (VC 9.0): 950 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total 951 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total 952 9532) iASL Compiler/Disassembler and Tools: 954 955Implemented full support for the "SLIC" ACPI table. Includes support in the 956header files, disassembler, table compiler, and template generator. Bob Moore, 957Lin Ming. 958 959AcpiXtract: Correctly handle embedded comments and messages from AcpiDump. 960Apparently some or all versions of acpidump will occasionally emit a comment 961like 962"Wrong checksum", etc., into the dump file. This was causing problems for 963AcpiXtract. ACPICA BZ 905. 964 965iASL: Fix the Linux makefile by removing an inadvertent double file inclusion. 966ACPICA BZ 913. 967 968AcpiExec: Update installation of operation region handlers. Install one 969handler 970for a user-defined address space. This is used by the ASL test suite (ASLTS). 971 972---------------------------------------- 97311 February 2011. Summary of changes for version 20110211: 974 9751) ACPI CA Core Subsystem: 976 977Added a mechanism to defer _REG methods for some early-installed handlers. 978Most user handlers should be installed before call to AcpiEnableSubsystem. 979However, Event handlers and region handlers should be installed after 980AcpiInitializeObjects. Override handlers for the "default" regions should be 981installed early, however. This change executes all _REG methods for the 982default regions (Memory/IO/PCI/DataTable) simultaneously to prevent any 983chicken/egg issues between them. ACPICA BZ 848. 984 985Implemented an optimization for GPE detection. This optimization will simply 986ignore GPE registers that contain no enabled GPEs -- there is no need to 987read the register since this information is available internally. This 988becomes more important on machines with a large GPE space. ACPICA bugzilla 989884. Lin Ming. Suggestion from Joe Liu. 990 991Removed all use of the highly unreliable FADT revision field. The revision 992number in the FADT has been found to be completely unreliable and cannot be 993trusted. Only the actual table length can be used to infer the version. This 994change updates the ACPICA core and the disassembler so that both no longer 995even look at the FADT version and instead depend solely upon the FADT 996length. 997 998Fix an unresolved name issue for the no-debug and no-error-message source 999generation cases. The _AcpiModuleName was left undefined in these cases, but 1000it is actually needed as a parameter to some interfaces. Define 1001_AcpiModuleName as a null string in these cases. ACPICA Bugzilla 888. 1002 1003Split several large files (makefiles and project files updated) 1004 utglobal.c -> utdecode.c 1005 dbcomds.c -> dbmethod.c dbnames.c 1006 dsopcode.c -> dsargs.c dscontrol.c 1007 dsload.c -> dsload2.c 1008 aslanalyze.c -> aslbtypes.c aslwalks.c 1009 1010Example Code and Data Size: These are the sizes for the OS-independent 1011acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1012debug version of the code includes the debug output trace mechanism and has 1013a much larger code and data size. 1014 1015 Previous Release (VC 9.0): 1016 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 1017 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 1018 Current Release (VC 9.0): 1019 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 1020 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 1021 10222) iASL Compiler/Disassembler and Tools: 1023 1024iASL: Implemented the predefined macros __LINE__, __FILE__, and __DATE__. 1025These are useful C-style macros with the standard definitions. ACPICA 1026bugzilla 898. 1027 1028iASL/DTC: Added support for integer expressions and labels. Support for full 1029expressions for all integer fields in all ACPI tables. Support for labels in 1030"generic" portions of tables such as UEFI. See the iASL reference manual. 1031 1032Debugger: Added a command to display the status of global handlers. The 1033"handlers" command will display op region, fixed event, and miscellaneous 1034global handlers. installation status -- and for op regions, whether default 1035or user-installed handler will be used. 1036 1037iASL: Warn if reserved method incorrectly returns a value. Many predefined 1038names are defined such that they do not return a value. If implemented as a 1039method, issue a warning if such a name explicitly returns a value. ACPICA 1040Bugzilla 855. 1041 1042iASL: Added detection of GPE method name conflicts. Detects a conflict where 1043there are two GPE methods of the form _Lxy and _Exy in the same scope. (For 1044example, _L1D and _E1D in the same scope.) ACPICA bugzilla 848. 1045 1046iASL/DTC: Fixed a couple input scanner issues with comments and line 1047numbers. Comment remover could get confused and miss a comment ending. Fixed 1048a problem with line counter maintenance. 1049 1050iASL/DTC: Reduced the severity of some errors from fatal to error. There is 1051no need to abort on simple errors within a field definition. 1052 1053Debugger: Simplified the output of the help command. All help output now in 1054a single screen, instead of help subcommands. ACPICA Bugzilla 897. 1055 1056---------------------------------------- 105712 January 2011. Summary of changes for version 20110112: 1058 10591) ACPI CA Core Subsystem: 1060 1061Fixed a race condition between method execution and namespace walks that can 1062possibly cause a fault. The problem was apparently introduced in version 106320100528 as a result of a performance optimization that reduces the number of 1064namespace walks upon method exit by using the delete_namespace_subtree 1065function instead of the delete_namespace_by_owner function used previously. 1066Bug is a missing namespace lock in the delete_namespace_subtree function. 1067dana.myers@oracle.com 1068 1069Fixed several issues and a possible fault with the automatic "serialized" 1070method support. History: This support changes a method to "serialized" on the 1071fly if the method generates an AE_ALREADY_EXISTS error, indicating the 1072possibility that it cannot handle reentrancy. This fix repairs a couple of 1073issues seen in the field, especially on machines with many cores: 1074 1075 1) Delete method children only upon the exit of the last thread, 1076 so as to not delete objects out from under other running threads 1077 (and possibly causing a fault.) 1078 2) Set the "serialized" bit for the method only upon the exit of the 1079 Last thread, so as to not cause deadlock when running threads 1080 attempt to exit. 1081 3) Cleanup the use of the AML "MethodFlags" and internal method flags 1082 so that there is no longer any confusion between the two. 1083 1084 Lin Ming, Bob Moore. Reported by dana.myers@oracle.com. 1085 1086Debugger: Now lock the namespace for duration of a namespace dump. Prevents 1087issues if the namespace is changing dynamically underneath the debugger. 1088Especially affects temporary namespace nodes, since the debugger displays 1089these also. 1090 1091Updated the ordering of include files. The ACPICA headers should appear 1092before any compiler-specific headers (stdio.h, etc.) so that acenv.h can set 1093any necessary compiler-specific defines, etc. Affects the ACPI-related tools 1094and utilities. 1095 1096Updated all ACPICA copyrights and signons to 2011. Added the 2011 copyright 1097to all module headers and signons, including the Linux header. This affects 1098virtually every file in the ACPICA core subsystem, iASL compiler, and all 1099utilities. 1100 1101Added project files for MS Visual Studio 2008 (VC++ 9.0). The original 1102project files for VC++ 6.0 are now obsolete. New project files can be found 1103under acpica/generate/msvc9. See acpica/generate/msvc9/readme.txt for 1104details. 1105 1106Example Code and Data Size: These are the sizes for the OS-independent 1107acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1108debug version of the code includes the debug output trace mechanism and has a 1109much larger code and data size. 1110 1111 Previous Release (VC 6.0): 1112 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total 1113 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total 1114 Current Release (VC 9.0): 1115 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 1116 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 1117 11182) iASL Compiler/Disassembler and Tools: 1119 1120iASL: Added generic data types to the Data Table compiler. Add "generic" data 1121types such as UINT32, String, Unicode, etc., to simplify the generation of 1122platform-defined tables such as UEFI. Lin Ming. 1123 1124iASL: Added listing support for the Data Table Compiler. Adds listing support 1125(-l) to display actual binary output for each line of input code. 1126 1127---------------------------------------- 112809 December 2010. Summary of changes for version 20101209: 1129 11301) ACPI CA Core Subsystem: 1131 1132Completed the major overhaul of the GPE support code that was begun in July 11332010. Major features include: removal of _PRW execution in ACPICA (host 1134executes _PRWs anyway), cleanup of "wake" GPE interfaces and processing, 1135changes to existing interfaces, simplification of GPE handler operation, and 1136a handful of new interfaces: 1137 1138 AcpiUpdateAllGpes 1139 AcpiFinishGpe 1140 AcpiSetupGpeForWake 1141 AcpiSetGpeWakeMask 1142 One new file, evxfgpe.c to consolidate all external GPE interfaces. 1143 1144See the ACPICA Programmer Reference for full details and programming 1145information. See the new section 4.4 "General Purpose Event (GPE) Support" 1146for a full overview, and section 8.7 "ACPI General Purpose Event Management" 1147for programming details. ACPICA BZ 858,870,877. Matthew Garrett, Lin Ming, 1148Bob Moore, Rafael Wysocki. 1149 1150Implemented a new GPE feature for Windows compatibility, the "Implicit Wake 1151GPE Notify". This feature will automatically issue a Notify(2) on a device 1152when a Wake GPE is received if there is no corresponding GPE method or 1153handler. ACPICA BZ 870. 1154 1155Fixed a problem with the Scope() operator during table parse and load phase. 1156During load phase (table load or method execution), the scope operator should 1157not enter the target into the namespace. Instead, it should open a new scope 1158at the target location. Linux BZ 19462, ACPICA BZ 882. 1159 1160Example Code and Data Size: These are the sizes for the OS-independent 1161acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1162debug version of the code includes the debug output trace mechanism and has a 1163much larger code and data size. 1164 1165 Previous Release: 1166 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total 1167 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total 1168 Current Release: 1169 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 1170 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 1171 11722) iASL Compiler/Disassembler and Tools: 1173 1174iASL: Relax the alphanumeric restriction on _CID strings. These strings are 1175"bus-specific" per the ACPI specification, and therefore any characters are 1176acceptable. The only checks that can be performed are for a null string and 1177perhaps for a leading asterisk. ACPICA BZ 886. 1178 1179iASL: Fixed a problem where a syntax error that caused a premature EOF 1180condition on the source file emitted a very confusing error message. The 1181premature EOF is now detected correctly. ACPICA BZ 891. 1182 1183Disassembler: Decode the AccessSize within a Generic Address Structure (byte 1184access, word access, etc.) Note, this field does not allow arbitrary bit 1185access, the size is encoded as 1=byte, 2=word, 3=dword, and 4=qword. 1186 1187New: AcpiNames utility - Example namespace dump utility. Shows an example of 1188ACPICA configuration for a minimal namespace dump utility. Uses table and 1189namespace managers, but no AML interpreter. Does not add any functionality 1190over AcpiExec, it is a subset of AcpiExec. The purpose is to show how to 1191partition and configure ACPICA. ACPICA BZ 883. 1192 1193AML Debugger: Increased the debugger buffer size for method return objects. 1194Was 4K, increased to 16K. Also enhanced error messages for debugger method 1195execution, including the buffer overflow case. 1196 1197---------------------------------------- 119813 October 2010. Summary of changes for version 20101013: 1199 12001) ACPI CA Core Subsystem: 1201 1202Added support to clear the PCIEXP_WAKE event. When clearing ACPI events, now 1203clear the PCIEXP_WAKE_STS bit in the ACPI PM1 Status Register, via 1204HwClearAcpiStatus. Original change from Colin King. ACPICA BZ 880. 1205 1206Changed the type of the predefined namespace object _TZ from ThermalZone to 1207Device. This was found to be confusing to the host software that processes 1208the various thermal zones, since _TZ is not really a ThermalZone. However, a 1209Notify() can still be performed on it. ACPICA BZ 876. Suggestion from Rui 1210Zhang. 1211 1212Added Windows Vista SP2 to the list of supported _OSI strings. The actual 1213string is "Windows 2006 SP2". 1214 1215Eliminated duplicate code in AcpiUtExecute* functions. Now that the nsrepair 1216code automatically repairs _HID-related strings, this type of code is no 1217longer needed in Execute_HID, Execute_CID, and Execute_UID. ACPICA BZ 878. 1218 1219Example Code and Data Size: These are the sizes for the OS-independent 1220acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1221debug version of the code includes the debug output trace mechanism and has a 1222much larger code and data size. 1223 1224 Previous Release: 1225 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 1226 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 1227 Current Release: 1228 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 1229 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 1230 12312) iASL Compiler/Disassembler and Tools: 1232 1233iASL: Implemented additional compile-time validation for _HID strings. The 1234non-hex prefix (such as "PNP" or "ACPI") must be uppercase, and the length of 1235the string must be exactly seven or eight characters. For both _HID and _CID 1236strings, all characters must be alphanumeric. ACPICA BZ 874. 1237 1238iASL: Allow certain "null" resource descriptors. Some BIOS code creates 1239descriptors that are mostly or all zeros, with the expectation that they will 1240be filled in at runtime. iASL now allows this as long as there is a "resource 1241tag" (name) associated with the descriptor, which gives the ASL a handle 1242needed to modify the descriptor. ACPICA BZ 873. 1243 1244Added single-thread support to the generic Unix application OSL. Primarily 1245for iASL support, this change removes the use of semaphores in the single- 1246threaded ACPICA tools/applications - increasing performance. The 1247_MULTI_THREADED option was replaced by the (reverse) ACPI_SINGLE_THREADED 1248option. ACPICA BZ 879. 1249 1250AcpiExec: several fixes for the 64-bit version. Adds XSDT support and support 1251for 64-bit DSDT/FACS addresses in the FADT. Lin Ming. 1252 1253iASL: Moved all compiler messages to a new file, aslmessages.h. 1254 1255---------------------------------------- 125615 September 2010. Summary of changes for version 20100915: 1257 12581) ACPI CA Core Subsystem: 1259 1260Removed the AcpiOsDerivePciId OSL interface. The various host implementations 1261of this function were not OS-dependent and are now obsolete and can be 1262removed from all host OSLs. This function has been replaced by 1263AcpiHwDerivePciId, which is now part of the ACPICA core code. 1264AcpiHwDerivePciId has been implemented without recursion. Adds one new 1265module, hwpci.c. ACPICA BZ 857. 1266 1267Implemented a dynamic repair for _HID and _CID strings. The following 1268problems are now repaired at runtime: 1) Remove a leading asterisk in the 1269string, and 2) the entire string is uppercased. Both repairs are in 1270accordance with the ACPI specification and will simplify host driver code. 1271ACPICA BZ 871. 1272 1273The ACPI_THREAD_ID type is no longer configurable, internally it is now 1274always UINT64. This simplifies the ACPICA code, especially any printf output. 1275UINT64 is the only common data type for all thread_id types across all 1276operating systems. It is now up to the host OSL to cast the native thread_id 1277type to UINT64 before returning the value to ACPICA (via AcpiOsGetThreadId). 1278Lin Ming, Bob Moore. 1279 1280Added the ACPI_INLINE type to enhance the ACPICA configuration. The "inline" 1281keyword is not standard across compilers, and this type allows inline to be 1282configured on a per-compiler basis. Lin Ming. 1283 1284Made the system global AcpiGbl_SystemAwakeAndRunning publically available. 1285Added an extern for this boolean in acpixf.h. Some hosts utilize this value 1286during suspend/restore operations. ACPICA BZ 869. 1287 1288All code that implements error/warning messages with the "ACPI:" prefix has 1289been moved to a new module, utxferror.c. 1290 1291The UINT64_OVERLAY was moved to utmath.c, which is the only module where it 1292is used. ACPICA BZ 829. Lin Ming, Bob Moore. 1293 1294Example Code and Data Size: These are the sizes for the OS-independent 1295acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1296debug version of the code includes the debug output trace mechanism and has a 1297much larger code and data size. 1298 1299 Previous Release: 1300 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total 1301 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total 1302 Current Release: 1303 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 1304 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 1305 13062) iASL Compiler/Disassembler and Tools: 1307 1308iASL/Disassembler: Write ACPI errors to stderr instead of the output file. 1309This keeps the output files free of random error messages that may originate 1310from within the namespace/interpreter code. Used this opportunity to merge 1311all ACPI:-style messages into a single new module, utxferror.c. ACPICA BZ 1312866. Lin Ming, Bob Moore. 1313 1314Tools: update some printfs for ansi warnings on size_t. Handle width change 1315of size_t on 32-bit versus 64-bit generations. Lin Ming. 1316 1317---------------------------------------- 131806 August 2010. Summary of changes for version 20100806: 1319 13201) ACPI CA Core Subsystem: 1321 1322Designed and implemented a new host interface to the _OSI support code. This 1323will allow the host to dynamically add or remove multiple _OSI strings, as 1324well as install an optional handler that is called for each _OSI invocation. 1325Also added a new AML debugger command, 'osi' to display and modify the global 1326_OSI string table, and test support in the AcpiExec utility. See the ACPICA 1327reference manual for full details. Lin Ming, Bob Moore. ACPICA BZ 836. 1328New Functions: 1329 AcpiInstallInterface - Add an _OSI string. 1330 AcpiRemoveInterface - Delete an _OSI string. 1331 AcpiInstallInterfaceHandler - Install optional _OSI handler. 1332Obsolete Functions: 1333 AcpiOsValidateInterface - no longer used. 1334New Files: 1335 source/components/utilities/utosi.c 1336 1337Re-introduced the support to enable multi-byte transfers for Embedded 1338Controller (EC) operation regions. A reported problem was found to be a bug 1339in the host OS, not in the multi-byte support. Previously, the maximum data 1340size passed to the EC operation region handler was a single byte. There are 1341often EC Fields larger than one byte that need to be transferred, and it is 1342useful for the EC driver to lock these as a single transaction. This change 1343enables single transfers larger than 8 bits. This effectively changes the 1344access to the EC space from ByteAcc to AnyAcc, and will probably require 1345changes to the host OS Embedded Controller driver to enable 16/32/64/256-bit 1346transfers in addition to 8-bit transfers. Alexey Starikovskiy, Lin Ming. 1347 1348Fixed a problem with the prototype for AcpiOsReadPciConfiguration. The 1349prototype in acpiosxf.h had the output value pointer as a (void *). 1350It should be a (UINT64 *). This may affect some host OSL code. 1351 1352Fixed a couple problems with the recently modified Linux makefiles for iASL 1353and AcpiExec. These new makefiles place the generated object files in the 1354local directory so that there can be no collisions between the files that are 1355shared between them that are compiled with different options. 1356 1357Example Code and Data Size: These are the sizes for the OS-independent 1358acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1359debug version of the code includes the debug output trace mechanism and has a 1360much larger code and data size. 1361 1362 Previous Release: 1363 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 1364 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total 1365 Current Release: 1366 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total 1367 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total 1368 13692) iASL Compiler/Disassembler and Tools: 1370 1371iASL/Disassembler: Added a new option (-da, "disassemble all") to load the 1372namespace from and disassemble an entire group of AML files. Useful for 1373loading all of the AML tables for a given machine (DSDT, SSDT1...SSDTn) and 1374disassembling with one simple command. ACPICA BZ 865. Lin Ming. 1375 1376iASL: Allow multiple invocations of -e option. This change allows multiple 1377uses of -e on the command line: "-e ssdt1.dat -e ssdt2.dat". ACPICA BZ 834. 1378Lin Ming. 1379 1380---------------------------------------- 138102 July 2010. Summary of changes for version 20100702: 1382 13831) ACPI CA Core Subsystem: 1384 1385Implemented several updates to the recently added GPE reference count 1386support. The model for "wake" GPEs is changing to give the host OS complete 1387control of these GPEs. Eventually, the ACPICA core will not execute any _PRW 1388methods, since the host already must execute them. Also, additional changes 1389were made to help ensure that the reference counts are kept in proper 1390synchronization with reality. Rafael J. Wysocki. 1391 13921) Ensure that GPEs are not enabled twice during initialization. 13932) Ensure that GPE enable masks stay in sync with the reference count. 13943) Do not inadvertently enable GPEs when writing GPE registers. 13954) Remove the internal wake reference counter and add new AcpiGpeWakeup 1396interface. This interface will set or clear individual GPEs for wakeup. 13975) Remove GpeType argument from AcpiEnable and AcpiDisable. These interfaces 1398are now used for "runtime" GPEs only. 1399 1400Changed the behavior of the GPE install/remove handler interfaces. The GPE is 1401no longer disabled during this process, as it was found to cause problems on 1402some machines. Rafael J. Wysocki. 1403 1404Reverted a change introduced in version 20100528 to enable Embedded 1405Controller multi-byte transfers. This change was found to cause problems with 1406Index Fields and possibly Bank Fields. It will be reintroduced when these 1407problems have been resolved. 1408 1409Fixed a problem with references to Alias objects within Package Objects. A 1410reference to an Alias within the definition of a Package was not always 1411resolved properly. Aliases to objects like Processors, Thermal zones, etc. 1412were resolved to the actual object instead of a reference to the object as it 1413should be. Package objects are only allowed to contain integer, string, 1414buffer, package, and reference objects. Redhat bugzilla 608648. 1415 1416Example Code and Data Size: These are the sizes for the OS-independent 1417acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1418debug version of the code includes the debug output trace mechanism and has a 1419much larger code and data size. 1420 1421 Previous Release: 1422 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 1423 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total 1424 Current Release: 1425 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 1426 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total 1427 14282) iASL Compiler/Disassembler and Tools: 1429 1430iASL: Implemented a new compiler subsystem to allow definition and 1431compilation of the non-AML ACPI tables such as FADT, MADT, SRAT, etc. These 1432are called "ACPI Data Tables", and the new compiler is the "Data Table 1433Compiler". This compiler is intended to simplify the existing error-prone 1434process of creating these tables for the BIOS, as well as allowing the 1435disassembly, modification, recompilation, and override of existing ACPI data 1436tables. See the iASL User Guide for detailed information. 1437 1438iASL: Implemented a new Template Generator option in support of the new Data 1439Table Compiler. This option will create examples of all known ACPI tables 1440that can be used as the basis for table development. See the iASL 1441documentation and the -T option. 1442 1443Disassembler and headers: Added support for the WDDT ACPI table (Watchdog 1444Descriptor Table). 1445 1446Updated the Linux makefiles for iASL and AcpiExec to place the generated 1447object files in the local directory so that there can be no collisions 1448between the shared files between them that are generated with different 1449options. 1450 1451Added support for Mac OS X in the Unix OSL used for iASL and AcpiExec. Use 1452the #define __APPLE__ to enable this support. 1453 1454---------------------------------------- 145528 May 2010. Summary of changes for version 20100528: 1456 1457Note: The ACPI 4.0a specification was released on April 5, 2010 and is 1458available at www.acpi.info. This is primarily an errata release. 1459 14601) ACPI CA Core Subsystem: 1461 1462Undefined ACPI tables: We are looking for the definitions for the following 1463ACPI tables that have been seen in the field: ATKG, IEIT, GSCI. 1464 1465Implemented support to enable multi-byte transfers for Embedded Controller 1466(EC) operation regions. Previously, the maximum data size passed to the EC 1467operation region handler was a single byte. There are often EC Fields larger 1468than one byte that need to be transferred, and it is useful for the EC driver 1469to lock these as a single transaction. This change enables single transfers 1470larger than 8 bits. This effectively changes the access to the EC space from 1471ByteAcc to AnyAcc, and will probably require changes to the host OS Embedded 1472Controller driver to enable 16/32/64/256-bit transfers in addition to 8-bit 1473transfers. Alexey Starikovskiy, Lin Ming 1474 1475Implemented a performance enhancement for namespace search and access. This 1476change enhances the performance of namespace searches and walks by adding a 1477backpointer to the parent in each namespace node. On large namespaces, this 1478change can improve overall ACPI performance by up to 9X. Adding a pointer to 1479each namespace node increases the overall size of the internal namespace by 1480about 5%, since each namespace entry usually consists of both a namespace 1481node and an ACPI operand object. However, this is the first growth of the 1482namespace in ten years. ACPICA bugzilla 817. Alexey Starikovskiy. 1483 1484Implemented a performance optimization that reduces the number of namespace 1485walks. On control method exit, only walk the namespace if the method is known 1486to have created namespace objects outside of its local scope. Previously, the 1487entire namespace was traversed on each control method exit. This change can 1488improve overall ACPI performance by up to 3X. Alexey Starikovskiy, Bob Moore. 1489 1490Added support to truncate I/O addresses to 16 bits for Windows compatibility. 1491Some ASL code has been seen in the field that inadvertently has bits set 1492above bit 15. This feature is optional and is enabled if the BIOS requests 1493any Windows OSI strings. It can also be enabled by the host OS. Matthew 1494Garrett, Bob Moore. 1495 1496Added support to limit the maximum time for the ASL Sleep() operator. To 1497prevent accidental deep sleeps, limit the maximum time that Sleep() will 1498actually sleep. Configurable, the default maximum is two seconds. ACPICA 1499bugzilla 854. 1500 1501Added run-time validation support for the _WDG and_WED Microsoft predefined 1502methods. These objects are defined by "Windows Instrumentation", and are not 1503part of the ACPI spec. ACPICA BZ 860. 1504 1505Expanded all statistic counters used during namespace and device 1506initialization from 16 to 32 bits in order to support very large namespaces. 1507 1508Replaced all instances of %d in printf format specifiers with %u since nearly 1509all integers in ACPICA are unsigned. 1510 1511Fixed the exception namestring for AE_WAKE_ONLY_GPE. Was incorrectly returned 1512as AE_NO_HANDLER. 1513 1514Example Code and Data Size: These are the sizes for the OS-independent 1515acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1516debug version of the code includes the debug output trace mechanism and has a 1517much larger code and data size. 1518 1519 Previous Release: 1520 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total 1521 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total 1522 Current Release: 1523 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 1524 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total 1525 15262) iASL Compiler/Disassembler and Tools: 1527 1528iASL: Added compiler support for the _WDG and_WED Microsoft predefined 1529methods. These objects are defined by "Windows Instrumentation", and are not 1530part of the ACPI spec. ACPICA BZ 860. 1531 1532AcpiExec: added option to disable the memory tracking mechanism. The -dt 1533option will disable the tracking mechanism, which improves performance 1534considerably. 1535 1536AcpiExec: Restructured the command line options into -d (disable) and -e 1537(enable) options. 1538 1539---------------------------------------- 154028 April 2010. Summary of changes for version 20100428: 1541 15421) ACPI CA Core Subsystem: 1543 1544Implemented GPE support for dynamically loaded ACPI tables. For all GPEs, 1545including FADT-based and GPE Block Devices, execute any _PRW methods in the 1546new table, and process any _Lxx/_Exx GPE methods in the new table. Any 1547runtime GPE that is referenced by an _Lxx/_Exx method in the new table is 1548immediately enabled. Handles the FADT-defined GPEs as well as GPE Block 1549Devices. Provides compatibility with other ACPI implementations. Two new 1550files added, evgpeinit.c and evgpeutil.c. ACPICA BZ 833. Lin Ming, Bob Moore. 1551 1552Fixed a regression introduced in version 20100331 within the table manager 1553where initial table loading could fail. This was introduced in the fix for 1554AcpiReallocateRootTable. Also, renamed some of fields in the table manager 1555data structures to clarify their meaning and use. 1556 1557Fixed a possible allocation overrun during internal object copy in 1558AcpiUtCopySimpleObject. The original code did not correctly handle the case 1559where the object to be copied was a namespace node. Lin Ming. ACPICA BZ 847. 1560 1561Updated the allocation dump routine, AcpiUtDumpAllocation and fixed a 1562possible access beyond end-of-allocation. Also, now fully validate descriptor 1563(size and type) before output. Lin Ming, Bob Moore. ACPICA BZ 847 1564 1565Example Code and Data Size: These are the sizes for the OS-independent 1566acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1567debug version of the code includes the debug output trace mechanism and has a 1568much larger code and data size. 1569 1570 Previous Release: 1571 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total 1572 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total 1573 Current Release: 1574 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total 1575 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total 1576 15772) iASL Compiler/Disassembler and Tools: 1578 1579iASL: Implemented Min/Max/Len/Gran validation for address resource 1580descriptors. This change implements validation for the address fields that 1581are common to all address-type resource descriptors. These checks are 1582implemented: Checks for valid Min/Max, length within the Min/Max window, 1583valid granularity, Min/Max a multiple of granularity, and _MIF/_MAF as per 1584table 6-40 in the ACPI 4.0a specification. Also split the large aslrestype1.c 1585and aslrestype2.c files into five new files. ACPICA BZ 840. 1586 1587iASL: Added support for the _Wxx predefined names. This support was missing 1588and these names were not recognized by the compiler as valid predefined 1589names. ACPICA BZ 851. 1590 1591iASL: Added an error for all predefined names that are defined to return no 1592value and thus must be implemented as Control Methods. These include all of 1593the _Lxx, _Exx, _Wxx, and _Qxx names, as well as some other miscellaneous 1594names such as _DIS, _INI, _IRC, _OFF, _ON, and _PSx. ACPICA BZ 850, 856. 1595 1596iASL: Implemented the -ts option to emit hex AML data in ASL format, as an 1597ASL Buffer. Allows ACPI tables to be easily included within ASL files, to be 1598dynamically loaded via the Load() operator. Also cleaned up output for the - 1599ta and -tc options. ACPICA BZ 853. 1600 1601Tests: Added a new file with examples of extended iASL error checking. 1602Demonstrates the advanced error checking ability of the iASL compiler. 1603Available at tests/misc/badcode.asl. 1604 1605---------------------------------------- 160631 March 2010. Summary of changes for version 20100331: 1607 16081) ACPI CA Core Subsystem: 1609 1610Completed a major update for the GPE support in order to improve support for 1611shared GPEs and to simplify both host OS and ACPICA code. Added a reference 1612count mechanism to support shared GPEs that require multiple device drivers. 1613Several external interfaces have changed. One external interface has been 1614removed. One new external interface was added. Most of the GPE external 1615interfaces now use the GPE spinlock instead of the events mutex (and the 1616Flags parameter for many GPE interfaces has been removed.) See the updated 1617ACPICA Programmer Reference for details. Matthew Garrett, Bob Moore, Rafael 1618Wysocki. ACPICA BZ 831. 1619 1620Changed: 1621 AcpiEnableGpe, AcpiDisableGpe, AcpiClearGpe, AcpiGetGpeStatus 1622Removed: 1623 AcpiSetGpeType 1624New: 1625 AcpiSetGpe 1626 1627Implemented write support for DataTable operation regions. These regions are 1628defined via the DataTableRegion() operator. Previously, only read support was 1629implemented. The ACPI specification allows DataTableRegions to be read/write, 1630however. 1631 1632Implemented a new subsystem option to force a copy of the DSDT to local 1633memory. Optionally copy the entire DSDT to local memory (instead of simply 1634mapping it.) There are some (albeit very rare) BIOSs that corrupt or replace 1635the original DSDT, creating the need for this option. Default is FALSE, do 1636not copy the DSDT. 1637 1638Implemented detection of a corrupted or replaced DSDT. This change adds 1639support to detect a DSDT that has been corrupted and/or replaced from outside 1640the OS (by firmware). This is typically catastrophic for the system, but has 1641been seen on some machines. Once this problem has been detected, the DSDT 1642copy option can be enabled via system configuration. Lin Ming, Bob Moore. 1643 1644Fixed two problems with AcpiReallocateRootTable during the root table copy. 1645When copying the root table to the new allocation, the length used was 1646incorrect. The new size was used instead of the current table size, meaning 1647too much data was copied. Also, the count of available slots for ACPI tables 1648was not set correctly. Alexey Starikovskiy, Bob Moore. 1649 1650Example Code and Data Size: These are the sizes for the OS-independent 1651acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1652debug version of the code includes the debug output trace mechanism and has a 1653much larger code and data size. 1654 1655 Previous Release: 1656 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total 1657 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total 1658 Current Release: 1659 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total 1660 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total 1661 16622) iASL Compiler/Disassembler and Tools: 1663 1664iASL: Implement limited typechecking for values returned from predefined 1665control methods. The type of any returned static (unnamed) object is now 1666validated. For example, Return(1). ACPICA BZ 786. 1667 1668iASL: Fixed a predefined name object verification regression. Fixes a problem 1669introduced in version 20100304. An error is incorrectly generated if a 1670predefined name is declared as a static named object with a value defined 1671using the keywords "Zero", "One", or "Ones". Lin Ming. 1672 1673iASL: Added Windows 7 support for the -g option (get local ACPI tables) by 1674reducing the requested registry access rights. ACPICA BZ 842. 1675 1676Disassembler: fixed a possible fault when generating External() statements. 1677Introduced in commit ae7d6fd: Properly handle externals with parent-prefix 1678(carat). Fixes a string length allocation calculation. Lin Ming. 1679 1680---------------------------------------- 168104 March 2010. Summary of changes for version 20100304: 1682 16831) ACPI CA Core Subsystem: 1684 1685Fixed a possible problem with the AML Mutex handling function 1686AcpiExReleaseMutex where the function could fault under the very rare 1687condition when the interpreter has blocked, the interpreter lock is released, 1688the interpreter is then reentered via the same thread, and attempts to 1689acquire an AML mutex that was previously acquired. FreeBSD report 140979. Lin 1690Ming. 1691 1692Implemented additional configuration support for the AML "Debug Object". 1693Output from the debug object can now be enabled via a global variable, 1694AcpiGbl_EnableAmlDebugObject. This will assist with remote machine debugging. 1695This debug output is now available in the release version of ACPICA instead 1696of just the debug version. Also, the entire debug output module can now be 1697configured out of the ACPICA build if desired. One new file added, 1698executer/exdebug.c. Lin Ming, Bob Moore. 1699 1700Added header support for the ACPI MCHI table (Management Controller Host 1701Interface Table). This table was added in ACPI 4.0, but the defining document 1702has only recently become available. 1703 1704Standardized output of integer values for ACPICA warnings/errors. Always use 17050x prefix for hex output, always use %u for unsigned integer decimal output. 1706Affects ACPI_INFO, ACPI_ERROR, ACPI_EXCEPTION, and ACPI_WARNING (about 400 1707invocations.) These invocations were converted from the original 1708ACPI_DEBUG_PRINT invocations and were not consistent. ACPICA BZ 835. 1709 1710Example Code and Data Size: These are the sizes for the OS-independent 1711acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1712debug version of the code includes the debug output trace mechanism and has a 1713much larger code and data size. 1714 1715 Previous Release: 1716 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total 1717 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total 1718 Current Release: 1719 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total 1720 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total 1721 17222) iASL Compiler/Disassembler and Tools: 1723 1724iASL: Implemented typechecking support for static (non-control method) 1725predefined named objects that are declared with the Name() operator. For 1726example, the type of this object is now validated to be of type Integer: 1727Name(_BBN, 1). This change migrates the compiler to using the core predefined 1728name table instead of maintaining a local version. Added a new file, 1729aslpredef.c. ACPICA BZ 832. 1730 1731Disassembler: Added support for the ACPI 4.0 MCHI table. 1732 1733---------------------------------------- 173421 January 2010. Summary of changes for version 20100121: 1735 17361) ACPI CA Core Subsystem: 1737 1738Added the 2010 copyright to all module headers and signons. This affects 1739virtually every file in the ACPICA core subsystem, the iASL compiler, the 1740tools/utilities, and the test suites. 1741 1742Implemented a change to the AcpiGetDevices interface to eliminate unnecessary 1743invocations of the _STA method. In the case where a specific _HID is 1744requested, do not run _STA until a _HID match is found. This eliminates 1745potentially dozens of _STA calls during a search for a particular device/HID, 1746which in turn can improve boot times. ACPICA BZ 828. Lin Ming. 1747 1748Implemented an additional repair for predefined method return values. Attempt 1749to repair unexpected NULL elements within returned Package objects. Create an 1750Integer of value zero, a NULL String, or a zero-length Buffer as appropriate. 1751ACPICA BZ 818. Lin Ming, Bob Moore. 1752 1753Removed the obsolete ACPI_INTEGER data type. This type was introduced as the 1754code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0 (with 175564-bit AML integers). It is now obsolete and this change removes it from the 1756ACPICA code base, replaced by UINT64. The original typedef has been retained 1757for now for compatibility with existing device driver code. ACPICA BZ 824. 1758 1759Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field in 1760the parse tree object. 1761 1762Added additional warning options for the gcc-4 generation. Updated the source 1763accordingly. This includes some code restructuring to eliminate unreachable 1764code, elimination of some gotos, elimination of unused return values, some 1765additional casting, and removal of redundant declarations. 1766 1767Example Code and Data Size: These are the sizes for the OS-independent 1768acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1769debug version of the code includes the debug output trace mechanism and has a 1770much larger code and data size. 1771 1772 Previous Release: 1773 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 1774 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 1775 Current Release: 1776 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total 1777 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total 1778 17792) iASL Compiler/Disassembler and Tools: 1780 1781No functional changes for this release. 1782 1783---------------------------------------- 178414 December 2009. Summary of changes for version 20091214: 1785 17861) ACPI CA Core Subsystem: 1787 1788Enhanced automatic data type conversions for predefined name repairs. This 1789change expands the automatic repairs/conversions for predefined name return 1790values to make Integers, Strings, and Buffers fully interchangeable. Also, a 1791Buffer can be converted to a Package of Integers if necessary. The nsrepair.c 1792module was completely restructured. Lin Ming, Bob Moore. 1793 1794Implemented automatic removal of null package elements during predefined name 1795repairs. This change will automatically remove embedded and trailing NULL 1796package elements from returned package objects that are defined to contain a 1797variable number of sub-packages. The driver is then presented with a package 1798with no null elements to deal with. ACPICA BZ 819. 1799 1800Implemented a repair for the predefined _FDE and _GTM names. The expected 1801return value for both names is a Buffer of 5 DWORDs. This repair fixes two 1802possible problems (both seen in the field), where a package of integers is 1803returned, or a buffer of BYTEs is returned. With assistance from Jung-uk Kim. 1804 1805Implemented additional module-level code support. This change will properly 1806execute module-level code that is not at the root of the namespace (under a 1807Device object, etc.). Now executes the code within the current scope instead 1808of the root. ACPICA BZ 762. Lin Ming. 1809 1810Fixed possible mutex acquisition errors when running _REG methods. Fixes a 1811problem where mutex errors can occur when running a _REG method that is in 1812the same scope as a method-defined operation region or an operation region 1813under a module-level IF block. This type of code is rare, so the problem has 1814not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore. 1815 1816Fixed a possible memory leak during module-level code execution. An object 1817could be leaked for each block of executed module-level code if the 1818interpreter slack mode is enabled This change deletes any implicitly returned 1819object from the module-level code block. Lin Ming. 1820 1821Removed messages for successful predefined repair(s). The repair mechanism 1822was considered too wordy. Now, messages are only unconditionally emitted if 1823the return object cannot be repaired. Existing messages for successful 1824repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ 827. 1825 1826Example Code and Data Size: These are the sizes for the OS-independent 1827acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1828debug version of the code includes the debug output trace mechanism and has a 1829much larger code and data size. 1830 1831 Previous Release: 1832 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 1833 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 1834 Current Release: 1835 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 1836 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 1837 18382) iASL Compiler/Disassembler and Tools: 1839 1840iASL: Fixed a regression introduced in 20091112 where intermediate .SRC files 1841were no longer automatically removed at the termination of the compile. 1842 1843acpiexec: Implemented the -f option to specify default region fill value. 1844This option specifies the value used to initialize buffers that simulate 1845operation regions. Default value is zero. Useful for debugging problems that 1846depend on a specific initial value for a region or field. 1847 1848---------------------------------------- 184912 November 2009. Summary of changes for version 20091112: 1850 18511) ACPI CA Core Subsystem: 1852 1853Implemented a post-order callback to AcpiWalkNamespace. The existing 1854interface only has a pre-order callback. This change adds an additional 1855parameter for a post-order callback which will be more useful for bus scans. 1856ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference. 1857 1858Modified the behavior of the operation region memory mapping cache for 1859SystemMemory. Ensure that the memory mappings created for operation regions 1860do not cross 4K page boundaries. Crossing a page boundary while mapping 1861regions can cause kernel warnings on some hosts if the pages have different 1862attributes. Such regions are probably BIOS bugs, and this is the workaround. 1863Linux BZ 14445. Lin Ming. 1864 1865Implemented an automatic repair for predefined methods that must return 1866sorted lists. This change will repair (by sorting) packages returned by _ALR, 1867_PSS, and _TSS. Drivers can now assume that the packages are correctly sorted 1868and do not contain NULL package elements. Adds one new file, 1869namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore. 1870 1871Fixed a possible fault during predefined name validation if a return Package 1872object contains NULL elements. Also adds a warning if a NULL element is 1873followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement may 1874include repair or removal of all such NULL elements where possible. 1875 1876Implemented additional module-level executable AML code support. This change 1877will execute module-level code that is not at the root of the namespace 1878(under a Device object, etc.) at table load time. Module-level executable AML 1879code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming. 1880 1881Implemented a new internal function to create Integer objects. This function 1882simplifies miscellaneous object creation code. ACPICA BZ 823. 1883 1884Reduced the severity of predefined repair messages, Warning to Info. Since 1885the object was successfully repaired, a warning is too severe. Reduced to an 1886info message for now. These messages may eventually be changed to debug-only. 1887ACPICA BZ 812. 1888 1889Example Code and Data Size: These are the sizes for the OS-independent 1890acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1891debug version of the code includes the debug output trace mechanism and has a 1892much larger code and data size. 1893 1894 Previous Release: 1895 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 1896 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 1897 Current Release: 1898 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 1899 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 1900 19012) iASL Compiler/Disassembler and Tools: 1902 1903iASL: Implemented Switch() with While(1) so that Break works correctly. This 1904change correctly implements the Switch operator with a surrounding While(1) 1905so that the Break operator works as expected. ACPICA BZ 461. Lin Ming. 1906 1907iASL: Added a message if a package initializer list is shorter than package 1908length. Adds a new remark for a Package() declaration if an initializer list 1909exists, but is shorter than the declared length of the package. Although 1910technically legal, this is probably a coding error and it is seen in the 1911field. ACPICA BZ 815. Lin Ming, Bob Moore. 1912 1913iASL: Fixed a problem where the compiler could fault after the maximum number 1914of errors was reached (200). 1915 1916acpixtract: Fixed a possible warning for pointer cast if the compiler warning 1917level set very high. 1918 1919---------------------------------------- 192013 October 2009. Summary of changes for version 20091013: 1921 19221) ACPI CA Core Subsystem: 1923 1924Fixed a problem where an Operation Region _REG method could be executed more 1925than once. If a custom address space handler is installed by the host before 1926the "initialize operation regions" phase of the ACPICA initialization, any 1927_REG methods for that address space could be executed twice. This change 1928fixes the problem. ACPICA BZ 427. Lin Ming. 1929 1930Fixed a possible memory leak for the Scope() ASL operator. When the exact 1931invocation of "Scope(\)" is executed (change scope to root), one internal 1932operand object was leaked. Lin Ming. 1933 1934Implemented a run-time repair for the _MAT predefined method. If the _MAT 1935return value is defined as a Field object in the AML, and the field 1936size is less than or equal to the default width of an integer (32 or 64),_MAT 1937can incorrectly return an Integer instead of a Buffer. ACPICA now 1938automatically repairs this problem. ACPICA BZ 810. 1939 1940Implemented a run-time repair for the _BIF and _BIX predefined methods. The 1941"OEM Information" field is often incorrectly returned as an Integer with 1942value zero if the field is not supported by the platform. This is due to an 1943ambiguity in the ACPI specification. The field should always be a string. 1944ACPICA now automatically repairs this problem by returning a NULL string 1945within the returned Package. ACPICA BZ 807. 1946 1947Example Code and Data Size: These are the sizes for the OS-independent 1948acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1949debug version of the code includes the debug output trace mechanism and has a 1950much larger code and data size. 1951 1952 Previous Release: 1953 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 1954 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 1955 Current Release: 1956 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 1957 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 1958 19592) iASL Compiler/Disassembler and Tools: 1960 1961Disassembler: Fixed a problem where references to external symbols that 1962contained one or more parent-prefixes (carats) were not handled correctly, 1963possibly causing a fault. ACPICA BZ 806. Lin Ming. 1964 1965Disassembler: Restructured the code so that all functions that handle 1966external symbols are in a single module. One new file is added, 1967common/dmextern.c. 1968 1969AML Debugger: Added a max count argument for the Batch command (which 1970executes multiple predefined methods within the namespace.) 1971 1972iASL: Updated the compiler documentation (User Reference.) Available at 1973http://www.acpica.org/documentation/. ACPICA BZ 750. 1974 1975AcpiXtract: Updated for Lint and other formatting changes. Close all open 1976files. 1977 1978---------------------------------------- 197903 September 2009. Summary of changes for version 20090903: 1980 19811) ACPI CA Core Subsystem: 1982 1983For Windows Vista compatibility, added the automatic execution of an _INI 1984method located at the namespace root (\_INI). This method is executed at 1985table load time. This support is in addition to the automatic execution of 1986\_SB._INI. Lin Ming. 1987 1988Fixed a possible memory leak in the interpreter for AML package objects if 1989the package initializer list is longer than the defined size of the package. 1990This apparently can only happen if the BIOS changes the package size on the 1991fly (seen in a _PSS object), as ASL compilers do not allow this. The 1992interpreter will truncate the package to the defined size (and issue an error 1993message), but previously could leave the extra objects undeleted if they were 1994pre-created during the argument processing (such is the case if the package 1995consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805. 1996 1997Fixed a problem seen when a Buffer or String is stored to itself via ASL. 1998This has been reported in the field. Previously, ACPICA would zero out the 1999buffer/string. Now, the operation is treated as a noop. Provides Windows 2000compatibility. ACPICA BZ 803. Lin Ming. 2001 2002Removed an extraneous error message for ASL constructs of the form 2003Store(LocalX,LocalX) when LocalX is uninitialized. These curious statements 2004are seen in many BIOSs and are once again treated as NOOPs and no error is 2005emitted when they are encountered. ACPICA BZ 785. 2006 2007Fixed an extraneous warning message if a _DSM reserved method returns a 2008Package object. _DSM can return any type of object, so validation on the 2009return type cannot be performed. ACPICA BZ 802. 2010 2011Example Code and Data Size: These are the sizes for the OS-independent 2012acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2013debug version of the code includes the debug output trace mechanism and has a 2014much larger code and data size. 2015 2016 Previous Release: 2017 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 2018 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 2019 Current Release: 2020 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 2021 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 2022 20232) iASL Compiler/Disassembler and Tools: 2024 2025iASL: Fixed a problem with the use of the Alias operator and Resource 2026Templates. The correct alias is now constructed and no error is emitted. 2027ACPICA BZ 738. 2028 2029iASL: Implemented the -I option to specify additional search directories for 2030include files. Allows multiple additional search paths for include files. 2031Directories are searched in the order specified on the command line (after 2032the local directory is searched.) ACPICA BZ 800. 2033 2034iASL: Fixed a problem where the full pathname for include files was not 2035emitted for warnings/errors. This caused the IDE support to not work 2036properly. ACPICA BZ 765. 2037 2038iASL: Implemented the -@ option to specify a Windows-style response file 2039containing additional command line options. ACPICA BZ 801. 2040 2041AcpiExec: Added support to load multiple AML files simultaneously (such as a 2042DSDT and multiple SSDTs). Also added support for wildcards within the AML 2043pathname. These features allow all machine tables to be easily loaded and 2044debugged together. ACPICA BZ 804. 2045 2046Disassembler: Added missing support for disassembly of HEST table Error Bank 2047subtables. 2048 2049---------------------------------------- 205030 July 2009. Summary of changes for version 20090730: 2051 2052The ACPI 4.0 implementation for ACPICA is complete with this release. 2053 20541) ACPI CA Core Subsystem: 2055 2056ACPI 4.0: Added header file support for all new and changed ACPI tables. 2057Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are new 2058for ACPI 4.0, but have previously been supported in ACPICA are: CPEP, BERT, 2059EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT. There 2060have been some ACPI 4.0 changes to other existing tables. Split the large 2061actbl1.h header into the existing actbl2.h header. ACPICA BZ 774. 2062 2063ACPI 4.0: Implemented predefined name validation for all new names. There are 206431 new names in ACPI 4.0. The predefined validation module was split into two 2065files. The new file is namespace/nsrepair.c. ACPICA BZ 770. 2066 2067Implemented support for so-called "module-level executable code". This is 2068executable AML code that exists outside of any control method and is intended 2069to be executed at table load time. Although illegal since ACPI 2.0, this type 2070of code still exists and is apparently still being created. Blocks of this 2071code are now detected and executed as intended. Currently, the code blocks 2072must exist under either an If, Else, or While construct; these are the 2073typical cases seen in the field. ACPICA BZ 762. Lin Ming. 2074 2075Implemented an automatic dynamic repair for predefined names that return 2076nested Package objects. This applies to predefined names that are defined to 2077return a variable-length Package of sub-packages. If the number of sub- 2078packages is one, BIOS code is occasionally seen that creates a simple single 2079package with no sub-packages. This code attempts to fix the problem by 2080wrapping a new package object around the existing package. These methods can 2081be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA BZ 2082790. 2083 2084Fixed a regression introduced in 20090625 for the AcpiGetDevices interface. 2085The _HID/_CID matching was broken and no longer matched IDs correctly. ACPICA 2086BZ 793. 2087 2088Fixed a problem with AcpiReset where the reset would silently fail if the 2089register was one of the protected I/O ports. AcpiReset now bypasses the port 2090validation mechanism. This may eventually be driven into the AcpiRead/Write 2091interfaces. 2092 2093Fixed a regression related to the recent update of the AcpiRead/Write 2094interfaces. A sleep/suspend could fail if the optional PM2 Control register 2095does not exist during an attempt to write the Bus Master Arbitration bit. 2096(However, some hosts already delete the code that writes this bit, and the 2097code may in fact be obsolete at this date.) ACPICA BZ 799. 2098 2099Fixed a problem where AcpiTerminate could fault if inadvertently called twice 2100in succession. ACPICA BZ 795. 2101 2102Example Code and Data Size: These are the sizes for the OS-independent 2103acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2104debug version of the code includes the debug output trace mechanism and has a 2105much larger code and data size. 2106 2107 Previous Release: 2108 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 2109 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 2110 Current Release: 2111 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 2112 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 2113 21142) iASL Compiler/Disassembler and Tools: 2115 2116ACPI 4.0: Implemented disassembler support for all new ACPI tables and 2117changes to existing tables. ACPICA BZ 775. 2118 2119---------------------------------------- 212025 June 2009. Summary of changes for version 20090625: 2121 2122The ACPI 4.0 Specification was released on June 16 and is available at 2123www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will 2124continue for the next few releases. 2125 21261) ACPI CA Core Subsystem: 2127 2128ACPI 4.0: Implemented interpreter support for the IPMI operation region 2129address space. Includes support for bi-directional data buffers and an IPMI 2130address space handler (to be installed by an IPMI device driver.) ACPICA BZ 2131773. Lin Ming. 2132 2133ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT. Includes 2134support in both the header files and the disassembler. 2135 2136Completed a major update for the AcpiGetObjectInfo external interface. 2137Changes include: 2138 - Support for variable, unlimited length HID, UID, and CID strings. 2139 - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA, etc.) 2140 - Call the _SxW power methods on behalf of a device object. 2141 - Determine if a device is a PCI root bridge. 2142 - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO. 2143These changes will require an update to all callers of this interface. See 2144the updated ACPICA Programmer Reference for details. One new source file has 2145been added - utilities/utids.c. ACPICA BZ 368, 780. 2146 2147Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit 2148transfers. The Value parameter has been extended from 32 bits to 64 bits in 2149order to support new ACPI 4.0 tables. These changes will require an update to 2150all callers of these interfaces. See the ACPICA Programmer Reference for 2151details. ACPICA BZ 768. 2152 2153Fixed several problems with AcpiAttachData. The handler was not invoked when 2154the host node was deleted. The data sub-object was not automatically deleted 2155when the host node was deleted. The interface to the handler had an unused 2156parameter, this was removed. ACPICA BZ 778. 2157 2158Enhanced the function that dumps ACPI table headers. All non-printable 2159characters in the string fields are now replaced with '?' (Signature, OemId, 2160OemTableId, and CompilerId.) ACPI tables with non-printable characters in 2161these fields are occasionally seen in the field. ACPICA BZ 788. 2162 2163Fixed a problem with predefined method repair code where the code that 2164attempts to repair/convert an object of incorrect type is only executed on 2165the first time the predefined method is called. The mechanism that disables 2166warnings on subsequent calls was interfering with the repair mechanism. 2167ACPICA BZ 781. 2168 2169Fixed a possible memory leak in the predefined validation/repair code when a 2170buffer is automatically converted to an expected string object. 2171 2172Removed obsolete 16-bit files from the distribution and from the current git 2173tree head. ACPICA BZ 776. 2174 2175Example Code and Data Size: These are the sizes for the OS-independent 2176acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2177debug version of the code includes the debug output trace mechanism and has a 2178much larger code and data size. 2179 2180 Previous Release: 2181 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 2182 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 2183 Current Release: 2184 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 2185 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 2186 21872) iASL Compiler/Disassembler and Tools: 2188 2189ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI 2190operation region keyword. ACPICA BZ 771, 772. Lin Ming. 2191 2192ACPI 4.0: iASL - implemented compile-time validation support for all new 2193predefined names and control methods (31 total). ACPICA BZ 769. 2194 2195---------------------------------------- 219621 May 2009. Summary of changes for version 20090521: 2197 21981) ACPI CA Core Subsystem: 2199 2200Disabled the preservation of the SCI enable bit in the PM1 control register. 2201The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification to be 2202a "preserved" bit - "OSPM always preserves this bit position", section 22034.7.3.2.1. However, some machines fail if this bit is in fact preserved 2204because the bit needs to be explicitly set by the OS as a workaround. No 2205machines fail if the bit is not preserved. Therefore, ACPICA no longer 2206attempts to preserve this bit. 2207 2208Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or 2209incorrectly formed _PRT package could cause a fault. Added validation to 2210ensure that each package element is actually a sub-package. 2211 2212Implemented a new interface to install or override a single control method, 2213AcpiInstallMethod. This interface is useful when debugging in order to repair 2214an existing method or to install a missing method without having to override 2215the entire ACPI table. See the ACPICA Programmer Reference for use and 2216examples. Lin Ming, Bob Moore. 2217 2218Fixed several reference count issues with the DdbHandle object that is 2219created from a Load or LoadTable operator. Prevent premature deletion of the 2220object. Also, mark the object as invalid once the table has been unloaded. 2221This is needed because the handle itself may not be deleted after the table 2222unload, depending on whether it has been stored in a named object by the 2223caller. Lin Ming. 2224 2225Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple 2226mutexes of the same sync level are acquired but then not released in strict 2227opposite order, the internally maintained Current Sync Level becomes confused 2228and can cause subsequent execution errors. ACPICA BZ 471. 2229 2230Changed the allowable release order for ASL mutex objects. The ACPI 4.0 2231specification has been changed to make the SyncLevel for mutex objects more 2232useful. When releasing a mutex, the SyncLevel of the mutex must now be the 2233same as the current sync level. This makes more sense than the previous rule 2234(SyncLevel less than or equal). This change updates the code to match the 2235specification. 2236 2237Fixed a problem with the local version of the AcpiOsPurgeCache function. The 2238(local) cache must be locked during all cache object deletions. Andrew 2239Baumann. 2240 2241Updated the Load operator to use operation region interfaces. This replaces 2242direct memory mapping with region access calls. Now, all region accesses go 2243through the installed region handler as they should. 2244 2245Simplified and optimized the NsGetNextNode function. Reduced parameter count 2246and reduced code for this frequently used function. 2247 2248Example Code and Data Size: These are the sizes for the OS-independent 2249acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2250debug version of the code includes the debug output trace mechanism and has a 2251much larger code and data size. 2252 2253 Previous Release: 2254 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 2255 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 2256 Current Release: 2257 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 2258 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 2259 22602) iASL Compiler/Disassembler and Tools: 2261 2262Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some problems 2263with sub-table disassembly and handling invalid sub-tables. Attempt recovery 2264after an invalid sub-table ID. 2265 2266---------------------------------------- 226722 April 2009. Summary of changes for version 20090422: 2268 22691) ACPI CA Core Subsystem: 2270 2271Fixed a compatibility issue with the recently released I/O port protection 2272mechanism. For windows compatibility, 1) On a port protection violation, 2273simply ignore the request and do not return an exception (allow the control 2274method to continue execution.) 2) If only part of the request overlaps a 2275protected port, read/write the individual ports that are not protected. Linux 2276BZ 13036. Lin Ming 2277 2278Enhanced the execution of the ASL/AML BreakPoint operator so that it actually 2279breaks into the AML debugger if the debugger is present. This matches the 2280ACPI-defined behavior. 2281 2282Fixed several possible warnings related to the use of the configurable 2283ACPI_THREAD_ID. This type can now be configured as either an integer or a 2284pointer with no warnings. Also fixes several warnings in printf-like 2285statements for the 64-bit build when the type is configured as a pointer. 2286ACPICA BZ 766, 767. 2287 2288Fixed a number of possible warnings when compiling with gcc 4+ (depending on 2289warning options.) Examples include printf formats, aliasing, unused globals, 2290missing prototypes, missing switch default statements, use of non-ANSI 2291library functions, use of non-ANSI constructs. See generate/unix/Makefile for 2292a list of warning options used with gcc 3 and 4. ACPICA BZ 735. 2293 2294Example Code and Data Size: These are the sizes for the OS-independent 2295acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2296debug version of the code includes the debug output trace mechanism and has a 2297much larger code and data size. 2298 2299 Previous Release: 2300 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 2301 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 2302 Current Release: 2303 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 2304 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 2305 23062) iASL Compiler/Disassembler and Tools: 2307 2308iASL: Fixed a generation warning from Bison 2.3 and fixed several warnings on 2309the 64-bit build. 2310 2311iASL: Fixed a problem where the Unix/Linux versions of the compiler could not 2312correctly digest Windows/DOS formatted files (with CR/LF). 2313 2314iASL: Added a new option for "quiet mode" (-va) that produces only the 2315compilation summary, not individual errors and warnings. Useful for large 2316batch compilations. 2317 2318AcpiExec: Implemented a new option (-z) to enable a forced semaphore/mutex 2319timeout that can be used to detect hang conditions during execution of AML 2320code (includes both internal semaphores and AML-defined mutexes and events.) 2321 2322Added new makefiles for the generation of acpica in a generic unix-like 2323environment. These makefiles are intended to generate the acpica tools and 2324utilities from the original acpica git source tree structure. 2325 2326Test Suites: Updated and cleaned up the documentation files. Updated the 2327copyrights to 2009, affecting all source files. Use the new version of iASL 2328with quiet mode. Increased the number of available semaphores in the Windows 2329OSL, allowing the aslts to execute fully on Windows. For the Unix OSL, added 2330an alternate implementation of the semaphore timeout to allow aslts to 2331execute fully on Cygwin. 2332 2333---------------------------------------- 233420 March 2009. Summary of changes for version 20090320: 2335 23361) ACPI CA Core Subsystem: 2337 2338Fixed a possible race condition between AcpiWalkNamespace and dynamic table 2339unloads. Added a reader/writer locking mechanism to allow multiple concurrent 2340namespace walks (readers), but block a dynamic table unload until it can gain 2341exclusive write access to the namespace. This fixes a problem where a table 2342unload could (possibly catastrophically) delete the portion of the namespace 2343that is currently being examined by a walk. Adds a new file, utlock.c, that 2344implements the reader/writer lock mechanism. ACPICA BZ 749. 2345 2346Fixed a regression introduced in version 20090220 where a change to the FADT 2347handling could cause the ACPICA subsystem to access non-existent I/O ports. 2348 2349Modified the handling of FADT register and table (FACS/DSDT) addresses. The 2350FADT can contain both 32-bit and 64-bit versions of these addresses. 2351Previously, the 64-bit versions were favored, meaning that if both 32 and 64 2352versions were valid, but not equal, the 64-bit version was used. This was 2353found to cause some machines to fail. Now, in this case, the 32-bit version 2354is used instead. This now matches the Windows behavior. 2355 2356Implemented a new mechanism to protect certain I/O ports. Provides Microsoft 2357compatibility and protects the standard PC I/O ports from access via AML 2358code. Adds a new file, hwvalid.c 2359 2360Fixed a possible extraneous warning message from the FADT support. The 2361message warns of a 32/64 length mismatch between the legacy and GAS 2362definitions for a register. 2363 2364Removed the obsolete AcpiOsValidateAddress OSL interface. This interface is 2365made obsolete by the port protection mechanism above. It was previously used 2366to validate the entire address range of an operation region, which could be 2367incorrect if the range included illegal ports, but fields within the 2368operation region did not actually access those ports. Validation is now 2369performed on a per-field basis instead of the entire region. 2370 2371Modified the handling of the PM1 Status Register ignored bit (bit 11.) 2372Ignored bits must be "preserved" according to the ACPI spec. Usually, this 2373means a read/modify/write when writing to the register. However, for status 2374registers, writing a one means clear the event. Writing a zero means preserve 2375the event (do not clear.) This behavior is clarified in the ACPI 4.0 spec, 2376and the ACPICA code now simply always writes a zero to the ignored bit. 2377 2378Modified the handling of ignored bits for the PM1 A/B Control Registers. As 2379per the ACPI specification, for the control registers, preserve 2380(read/modify/write) all bits that are defined as either reserved or ignored. 2381 2382Updated the handling of write-only bits in the PM1 A/B Control Registers. 2383When reading the register, zero the write-only bits as per the ACPI spec. 2384ACPICA BZ 443. Lin Ming. 2385 2386Removed "Linux" from the list of supported _OSI strings. Linux no longer 2387wants to reply true to this request. The Windows strings are the only paths 2388through the AML that are tested and known to work properly. 2389 2390 Previous Release: 2391 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 2392 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 2393 Current Release: 2394 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 2395 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 2396 23972) iASL Compiler/Disassembler and Tools: 2398 2399Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c and 2400aetables.c 2401 2402---------------------------------------- 240320 February 2009. Summary of changes for version 20090220: 2404 24051) ACPI CA Core Subsystem: 2406 2407Optimized the ACPI register locking. Removed locking for reads from the ACPI 2408bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock is 2409not required when reading the single-bit registers. The 2410AcpiGetRegisterUnlocked function is no longer needed and has been removed. 2411This will improve performance for reads on these registers. ACPICA BZ 760. 2412 2413Fixed the parameter validation for AcpiRead/Write. Now return 2414AE_BAD_PARAMETER if the input register pointer is null, and AE_BAD_ADDRESS if 2415the register has an address of zero. Previously, these cases simply returned 2416AE_OK. For optional registers such as PM1B status/enable/control, the caller 2417should check for a valid register address before calling. ACPICA BZ 748. 2418 2419Renamed the external ACPI bit register access functions. Renamed 2420AcpiGetRegister and AcpiSetRegister to clarify the purpose of these 2421functions. The new names are AcpiReadBitRegister and AcpiWriteBitRegister. 2422Also, restructured the code for these functions by simplifying the code path 2423and condensing duplicate code to reduce code size. 2424 2425Added new functions to transparently handle the possibly split PM1 A/B 2426registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two functions 2427now handle the split registers for PM1 Status, Enable, and Control. ACPICA BZ 2428746. 2429 2430Added a function to handle the PM1 control registers, AcpiHwWritePm1Control. 2431This function writes both of the PM1 control registers (A/B). These registers 2432are different than the PM1 A/B status and enable registers in that different 2433values can be written to the A/B registers. Most notably, the SLP_TYP bits 2434can be different, as per the values returned from the _Sx predefined methods. 2435 2436Removed an extra register write within AcpiHwClearAcpiStatus. This function 2437was writing an optional PM1B status register twice. The existing call to the 2438low-level AcpiHwRegisterWrite automatically handles a possibly split PM1 A/B 2439register. ACPICA BZ 751. 2440 2441Split out the PM1 Status registers from the FADT. Added new globals for these 2442registers (A/B), similar to the way the PM1 Enable registers are handled. 2443Instead of overloading the FADT Event Register blocks. This makes the code 2444clearer and less prone to error. 2445 2446Fixed the warning message for when the platform contains too many ACPI tables 2447for the default size of the global root table data structure. The calculation 2448for the truncation value was incorrect. 2449 2450Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this 2451obsolete macro, since it is now a simple reference to ->common.type. There 2452were about 150 invocations of the macro across 41 files. ACPICA BZ 755. 2453 2454Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as 2455TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to 2456simply SLEEP_TYPE. ACPICA BZ 754. 2457 2458Conditionally compile the AcpiSetFirmwareWakingVector64 function. This 2459function is only needed on 64-bit host operating systems and is thus not 2460included for 32-bit hosts. 2461 2462Debug output: print the input and result for invocations of the _OSI reserved 2463control method via the ACPI_LV_INFO debug level. Also, reduced some of the 2464verbosity of this debug level. Len Brown. 2465 2466Example Code and Data Size: These are the sizes for the OS-independent 2467acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2468debug version of the code includes the debug output trace mechanism and has a 2469much larger code and data size. 2470 2471 Previous Release: 2472 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 2473 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 2474 Current Release: 2475 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 2476 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 2477 24782) iASL Compiler/Disassembler and Tools: 2479 2480Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the 2481various legal performance profiles. 2482 2483---------------------------------------- 248423 January 2009. Summary of changes for version 20090123: 2485 24861) ACPI CA Core Subsystem: 2487 2488Added the 2009 copyright to all module headers and signons. This affects 2489virtually every file in the ACPICA core subsystem, the iASL compiler, and 2490the tools/utilities. 2491 2492Implemented a change to allow the host to override any ACPI table, including 2493dynamically loaded tables. Previously, only the DSDT could be replaced by the 2494host. With this change, the AcpiOsTableOverride interface is called for each 2495table found in the RSDT/XSDT during ACPICA initialization, and also whenever 2496a table is dynamically loaded via the AML Load operator. 2497 2498Updated FADT flag definitions, especially the Boot Architecture flags. 2499 2500Debugger: For the Find command, automatically pad the input ACPI name with 2501underscores if the name is shorter than 4 characters. This enables a match 2502with the actual namespace entry which is itself padded with underscores. 2503 2504Example Code and Data Size: These are the sizes for the OS-independent 2505acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2506debug version of the code includes the debug output trace mechanism and has a 2507much larger code and data size. 2508 2509 Previous Release: 2510 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 2511 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 2512 Current Release: 2513 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 2514 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 2515 25162) iASL Compiler/Disassembler and Tools: 2517 2518Fix build error under Bison-2.4. 2519 2520Dissasembler: Enhanced FADT support. Added decoding of the Boot Architecture 2521flags. Now decode all flags, regardless of the FADT version. Flag output 2522includes the FADT version which first defined each flag. 2523 2524The iASL -g option now dumps the RSDT to a file (in addition to the FADT and 2525DSDT). Windows only. 2526 2527---------------------------------------- 252804 December 2008. Summary of changes for version 20081204: 2529 25301) ACPI CA Core Subsystem: 2531 2532The ACPICA Programmer Reference has been completely updated and revamped for 2533this release. This includes updates to the external interfaces, OSL 2534interfaces, the overview sections, and the debugger reference. 2535 2536Several new ACPICA interfaces have been implemented and documented in the 2537programmer reference: 2538AcpiReset - Writes the reset value to the FADT-defined reset register. 2539AcpiDisableAllGpes - Disable all available GPEs. 2540AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs. 2541AcpiGetGpeDevice - Get the GPE block device associated with a GPE. 2542AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs. 2543AcpiRead - Low-level read ACPI register (was HwLowLevelRead.) 2544AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.) 2545 2546Most of the public ACPI hardware-related interfaces have been moved to a new 2547file, components/hardware/hwxface.c 2548 2549Enhanced the FADT parsing and low-level ACPI register access: The ACPI 2550register lengths within the FADT are now used, and the low level ACPI 2551register access no longer hardcodes the ACPI register lengths. Given that 2552there may be some risk in actually trusting the FADT register lengths, a run- 2553time option was added to fall back to the default hardcoded lengths if the 2554FADT proves to contain incorrect values - UseDefaultRegisterWidths. This 2555option is set to true for now, and a warning is issued if a suspicious FADT 2556register length is overridden with the default value. 2557 2558Fixed a reference count issue in NsRepairObject. This problem was introduced 2559in version 20081031 as part of a fix to repair Buffer objects within 2560Packages. Lin Ming. 2561 2562Added semaphore support to the Linux/Unix application OS-services layer 2563(OSL). ACPICA BZ 448. Lin Ming. 2564 2565Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes will 2566be implemented in the OSL, or will binary semaphores be used instead. 2567 2568Example Code and Data Size: These are the sizes for the OS-independent 2569acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2570debug version of the code includes the debug output trace mechanism and has a 2571much larger code and data size. 2572 2573 Previous Release: 2574 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 2575 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 2576 Current Release: 2577 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 2578 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 2579 25802) iASL Compiler/Disassembler and Tools: 2581 2582iASL: Completed the '-e' option to include additional ACPI tables in order to 2583aid with disassembly and External statement generation. ACPICA BZ 742. Lin 2584Ming. 2585 2586iASL: Removed the "named object in while loop" error. The compiler cannot 2587determine how many times a loop will execute. ACPICA BZ 730. 2588 2589Disassembler: Implemented support for FADT revision 2 (MS extension). ACPICA 2590BZ 743. 2591 2592Disassembler: Updates for several ACPI data tables (HEST, EINJ, and MCFG). 2593 2594---------------------------------------- 259531 October 2008. Summary of changes for version 20081031: 2596 25971) ACPI CA Core Subsystem: 2598 2599Restructured the ACPICA header files into public/private. acpi.h now includes 2600only the "public" acpica headers. All other acpica headers are "private" and 2601should not be included by acpica users. One new file, accommon.h is used to 2602include the commonly used private headers for acpica code generation. Future 2603plans include moving all private headers to a new subdirectory. 2604 2605Implemented an automatic Buffer->String return value conversion for 2606predefined ACPI methods. For these methods (such as _BIF), added automatic 2607conversion for return objects that are required to be a String, but a Buffer 2608was found instead. This can happen when reading string battery data from an 2609operation region, because it used to be difficult to convert the data from 2610buffer to string from within the ASL. Ensures that the host OS is provided 2611with a valid null-terminated string. Linux BZ 11822. 2612 2613Updated the FACS waking vector interfaces. Split AcpiSetFirmwareWakingVector 2614into two: one for the 32-bit vector, another for the 64-bit vector. This is 2615required because the host OS must setup the wake much differently for each 2616vector (real vs. protected mode, etc.) and the interface itself should not be 2617deciding which vector to use. Also, eliminated the GetFirmwareWakingVector 2618interface, as it served no purpose (only the firmware reads the vector, OS 2619only writes the vector.) ACPICA BZ 731. 2620 2621Implemented a mechanism to escape infinite AML While() loops. Added a loop 2622counter to force exit from AML While loops if the count becomes too large. 2623This can occur in poorly written AML when the hardware does not respond 2624within a while loop and the loop does not implement a timeout. The maximum 2625loop count is configurable. A new exception code is returned when a loop is 2626broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore. 2627 2628Optimized the execution of AML While loops. Previously, a control state 2629object was allocated and freed for each execution of the loop. The 2630optimization is to simply reuse the control state for each iteration. This 2631speeds up the raw loop execution time by about 5%. 2632 2633Enhanced the implicit return mechanism. For Windows compatibility, return an 2634implicit integer of value zero for methods that contain no executable code. 2635Such methods are seen in the field as stubs (presumably), and can cause 2636drivers to fail if they expect a return value. Lin Ming. 2637 2638Allow multiple backslashes as root prefixes in namepaths. In a fully 2639qualified namepath, allow multiple backslash prefixes. This can happen (and 2640is seen in the field) because of the use of a double-backslash in strings 2641(since backslash is the escape character) causing confusion. ACPICA BZ 739 2642Lin Ming. 2643 2644Emit a warning if two different FACS or DSDT tables are discovered in the 2645FADT. Checks if there are two valid but different addresses for the FACS and 2646DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.) 2647 2648Consolidated the method argument count validation code. Merged the code that 2649validates control method argument counts into the predefined validation 2650module. Eliminates possible multiple warnings for incorrect argument counts. 2651 2652Implemented ACPICA example code. Includes code for ACPICA initialization, 2653handler installation, and calling a control method. Available at 2654source/tools/examples. 2655 2656Added a global pointer for FACS table to simplify internal FACS access. Use 2657the global pointer instead of using AcpiGetTableByIndex for each FACS access. 2658This simplifies the code for the Global Lock and the Firmware Waking 2659Vector(s). 2660 2661Example Code and Data Size: These are the sizes for the OS-independent 2662acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2663debug version of the code includes the debug output trace mechanism and has a 2664much larger code and data size. 2665 2666 Previous Release: 2667 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 2668 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 2669 Current Release: 2670 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 2671 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 2672 26732) iASL Compiler/Disassembler and Tools: 2674 2675iASL: Improved disassembly of external method calls. Added the -e option to 2676allow the inclusion of additional ACPI tables to help with the disassembly of 2677method invocations and the generation of external declarations during the 2678disassembly. Certain external method invocations cannot be disassembled 2679properly without the actual declaration of the method. Use the -e option to 2680include the table where the external method(s) are actually declared. Most 2681useful for disassembling SSDTs that make method calls back to the master 2682DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl -d 2683-e dsdt.aml ssdt1.aml 2684 2685iASL: Fix to allow references to aliases within ASL namepaths. Fixes a 2686problem where the use of an alias within a namepath would result in a not 2687found error or cause the compiler to fault. Also now allows forward 2688references from the Alias operator itself. ACPICA BZ 738. 2689 2690---------------------------------------- 269126 September 2008. Summary of changes for version 20080926: 2692 26931) ACPI CA Core Subsystem: 2694 2695Designed and implemented a mechanism to validate predefined ACPI methods and 2696objects. This code validates the predefined ACPI objects (objects whose names 2697start with underscore) that appear in the namespace, at the time they are 2698evaluated. The argument count and the type of the returned object are 2699validated against the ACPI specification. The purpose of this validation is 2700to detect problems with the BIOS-implemented predefined ACPI objects before 2701the results are returned to the ACPI-related drivers. Future enhancements may 2702include actual repair of incorrect return objects where possible. Two new 2703files are nspredef.c and acpredef.h. 2704 2705Fixed a fault in the AML parser if a memory allocation fails during the Op 2706completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492. 2707 2708Fixed an issue with implicit return compatibility. This change improves the 2709implicit return mechanism to be more compatible with the MS interpreter. Lin 2710Ming, ACPICA BZ 349. 2711 2712Implemented support for zero-length buffer-to-string conversions. Allow zero 2713length strings during interpreter buffer-to-string conversions. For example, 2714during the ToDecimalString and ToHexString operators, as well as implicit 2715conversions. Fiodor Suietov, ACPICA BZ 585. 2716 2717Fixed two possible memory leaks in the error exit paths of 2718AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions are 2719similar in that they use a stack of state objects in order to eliminate 2720recursion. The stack must be fully unwound and deallocated if an error 2721occurs. Lin Ming. ACPICA BZ 383. 2722 2723Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the global 2724ACPI register table. This bit does not exist and is unused. Lin Ming, Bob 2725Moore ACPICA BZ 442. 2726 2727Removed the obsolete version number in module headers. Removed the 2728"$Revision" number that appeared in each module header. This version number 2729was useful under SourceSafe and CVS, but has no meaning under git. It is not 2730only incorrect, it could also be misleading. 2731 2732Example Code and Data Size: These are the sizes for the OS-independent 2733acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2734debug version of the code includes the debug output trace mechanism and has a 2735much larger code and data size. 2736 2737 Previous Release: 2738 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 2739 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 2740 Current Release: 2741 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 2742 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 2743 2744---------------------------------------- 274529 August 2008. Summary of changes for version 20080829: 2746 27471) ACPI CA Core Subsystem: 2748 2749Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type 2750Reference. Changes include the elimination of cheating on the Object field 2751for the DdbHandle subtype, addition of a reference class field to 2752differentiate the various reference types (instead of an AML opcode), and the 2753cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723 2754 2755Reduce an error to a warning for an incorrect method argument count. 2756Previously aborted with an error if too few arguments were passed to a 2757control method via the external ACPICA interface. Now issue a warning instead 2758and continue. Handles the case where the method inadvertently declares too 2759many arguments, but does not actually use the extra ones. Applies mainly to 2760the predefined methods. Lin Ming. Linux BZ 11032. 2761 2762Disallow the evaluation of named object types with no intrinsic value. Return 2763AE_TYPE for objects that have no value and therefore evaluation is undefined: 2764Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation of 2765these types were allowed, but an exception would be generated at some point 2766during the evaluation. Now, the error is generated up front. 2767 2768Fixed a possible memory leak in the AcpiNsGetExternalPathname function 2769(nsnames.c). Fixes a leak in the error exit path. 2770 2771Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These debug 2772levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and ACPI_EXCEPTION 2773interfaces. Also added ACPI_DB_EVENTS to correspond with the existing 2774ACPI_LV_EVENTS. 2775 2776Removed obsolete and/or unused exception codes from the acexcep.h header. 2777There is the possibility that certain device drivers may be affected if they 2778use any of these exceptions. 2779 2780The ACPICA documentation has been added to the public git source tree, under 2781acpica/documents. Included are the ACPICA programmer reference, the iASL 2782compiler reference, and the changes.txt release logfile. 2783 2784Example Code and Data Size: These are the sizes for the OS-independent 2785acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2786debug version of the code includes the debug output trace mechanism and has a 2787much larger code and data size. 2788 2789 Previous Release: 2790 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 2791 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 2792 Current Release: 2793 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 2794 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 2795 27962) iASL Compiler/Disassembler and Tools: 2797 2798Allow multiple argument counts for the predefined _SCP method. ACPI 3.0 2799defines _SCP with 3 arguments. Previous versions defined it with only 1 2800argument. iASL now allows both definitions. 2801 2802iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for zero- 2803length subtables when disassembling ACPI tables. Also fixed a couple of 2804errors where a full 16-bit table type field was not extracted from the input 2805properly. 2806 2807acpisrc: Improve comment counting mechanism for generating source code 2808statistics. Count first and last lines of multi-line comments as whitespace, 2809not comment lines. Handle Linux legal header in addition to standard acpica 2810header. 2811 2812---------------------------------------- 2813 281429 July 2008. Summary of changes for version 20080729: 2815 28161) ACPI CA Core Subsystem: 2817 2818Fix a possible deadlock in the GPE dispatch. Remove call to 2819AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will attempt 2820to acquire the GPE lock but can deadlock since the GPE lock is already held 2821at dispatch time. This code was introduced in version 20060831 as a response 2822to Linux BZ 6881 and has since been removed from Linux. 2823 2824Add a function to dereference returned reference objects. Examines the return 2825object from a call to AcpiEvaluateObject. Any Index or RefOf references are 2826automatically dereferenced in an attempt to return something useful (these 2827reference types cannot be converted into an external ACPI_OBJECT.) Provides 2828MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105 2829 2830x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new 2831subtables for the MADT and one new subtable for the SRAT. Includes 2832disassembler and AcpiSrc support. Data from the Intel 64 Architecture x2APIC 2833Specification, June 2008. 2834 2835Additional error checking for pathname utilities. Add error check after all 2836calls to AcpiNsGetPathnameLength. Add status return from 2837AcpiNsBuildExternalPath and check after all calls. Add parameter validation 2838to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar. 2839 2840Return status from the global init function AcpiUtGlobalInitialize. This is 2841used by both the kernel subsystem and the utilities such as iASL compiler. 2842The function could possibly fail when the caches are initialized. Yang Yi. 2843 2844Add a function to decode reference object types to strings. Created for 2845improved error messages. 2846 2847Improve object conversion error messages. Better error messages during object 2848conversion from internal to the external ACPI_OBJECT. Used for external calls 2849to AcpiEvaluateObject. 2850 2851Example Code and Data Size: These are the sizes for the OS-independent 2852acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2853debug version of the code includes the debug output trace mechanism and has a 2854much larger code and data size. 2855 2856 Previous Release: 2857 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 2858 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 2859 Current Release: 2860 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 2861 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 2862 28632) iASL Compiler/Disassembler and Tools: 2864 2865Debugger: fix a possible hang when evaluating non-methods. Fixes a problem 2866introduced in version 20080701. If the object being evaluated (via execute 2867command) is not a method, the debugger can hang while trying to obtain non- 2868existent parameters. 2869 2870iASL: relax error for using reserved "_T_x" identifiers. These names can 2871appear in a disassembled ASL file if they were emitted by the original 2872compiler. Instead of issuing an error or warning and forcing the user to 2873manually change these names, issue a remark instead. 2874 2875iASL: error if named object created in while loop. Emit an error if any named 2876object is created within a While loop. If allowed, this code will generate a 2877run-time error on the second iteration of the loop when an attempt is made to 2878create the same named object twice. ACPICA bugzilla 730. 2879 2880iASL: Support absolute pathnames for include files. Add support for absolute 2881pathnames within the Include operator. previously, only relative pathnames 2882were supported. 2883 2884iASL: Enforce minimum 1 interrupt in interrupt macro and Resource Descriptor. 2885The ACPI spec requires one interrupt minimum. BZ 423 2886 2887iASL: Handle a missing ResourceSource arg, with a present SourceIndex. 2888Handles the case for the Interrupt Resource Descriptor where 2889the ResourceSource argument is omitted but ResourceSourceIndex 2890is present. Now leave room for the Index. BZ 426 2891 2892iASL: Prevent error message if CondRefOf target does not exist. Fixes cases 2893where an error message is emitted if the target does not exist. BZ 516 2894 2895iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option 2896(get ACPI tables on Windows). This was apparently broken in version 20070919. 2897 2898AcpiXtract: Handle EOF while extracting data. Correctly handle the case where 2899the EOF happens immediately after the last table in the input file. Print 2900completion message. Previously, no message was displayed in this case. 2901 2902---------------------------------------- 290301 July 2008. Summary of changes for version 20080701: 2904 29050) Git source tree / acpica.org 2906 2907Fixed a problem where a git-clone from http would not transfer the entire 2908source tree. 2909 29101) ACPI CA Core Subsystem: 2911 2912Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one 2913enable bit. Now performs a read-change-write of the enable register instead 2914of simply writing out the cached enable mask. This will prevent inadvertent 2915enabling of GPEs if a rogue GPE is received during initialization (before GPE 2916handlers are installed.) 2917 2918Implemented a copy for dynamically loaded tables. Previously, dynamically 2919loaded tables were simply mapped - but on some machines this memory is 2920corrupted after suspend. Now copy the table to a local buffer. For the 2921OpRegion case, added checksum verify. Use the table length from the table 2922header, not the region length. For the Buffer case, use the table length 2923also. Dennis Noordsij, Bob Moore. BZ 10734 2924 2925Fixed a problem where the same ACPI table could not be dynamically loaded and 2926unloaded more than once. Without this change, a table cannot be loaded again 2927once it has been loaded/unloaded one time. The current mechanism does not 2928unregister a table upon an unload. During a load, if the same table is found, 2929this no longer returns an exception. BZ 722 2930 2931Fixed a problem where the wrong descriptor length was calculated for the 2932EndTag descriptor in 64-bit mode. The "minimal" descriptors such as EndTag 2933are calculated as 12 bytes long, but the actual length in the internal 2934descriptor is 16 because of the round-up to 8 on the 64-bit build. Reported 2935by Linn Crosetto. BZ 728 2936 2937Fixed a possible memory leak in the Unload operator. The DdbHandle returned 2938by Load() did not have its reference count decremented during unload, leading 2939to a memory leak. Lin Ming. BZ 727 2940 2941Fixed a possible memory leak when deleting thermal/processor objects. Any 2942associated notify handlers (and objects) were not being deleted. Fiodor 2943Suietov. BZ 506 2944 2945Fixed the ordering of the ASCII names in the global mutex table to match the 2946actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug only. 2947Vegard Nossum. BZ 726 2948 2949Enhanced the AcpiGetObjectInfo interface to return the number of required 2950arguments if the object is a control method. Added this call to the debugger 2951so the proper number of default arguments are passed to a method. This 2952prevents a warning when executing methods from AcpiExec. 2953 2954Added a check for an invalid handle in AcpiGetObjectInfo. Return 2955AE_BAD_PARAMETER if input handle is invalid. BZ 474 2956 2957Fixed an extraneous warning from exconfig.c on the 64-bit build. 2958 2959Example Code and Data Size: These are the sizes for the OS-independent 2960acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2961debug version of the code includes the debug output trace mechanism and has a 2962much larger code and data size. 2963 2964 Previous Release: 2965 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 2966 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 2967 Current Release: 2968 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 2969 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 2970 29712) iASL Compiler/Disassembler and Tools: 2972 2973iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both 2974resource descriptor names. 2975 2976iASL: Detect invalid ASCII characters in input (windows version). Removed the 2977"-CF" flag from the flex compile, enables correct detection of non-ASCII 2978characters in the input. BZ 441 2979 2980iASL: Eliminate warning when result of LoadTable is not used. Eliminate the 2981"result of operation not used" warning when the DDB handle returned from 2982LoadTable is not used. The warning is not needed. BZ 590 2983 2984AcpiExec: Add support for dynamic table load/unload. Now calls _CFG method to 2985pass address of table to the AML. Added option to disable OpRegion simulation 2986to allow creation of an OpRegion with a real address that was passed to _CFG. 2987All of this allows testing of the Load and Unload operators from AcpiExec. 2988 2989Debugger: update tables command for unloaded tables. Handle unloaded tables 2990and use the standard table header output routine. 2991 2992---------------------------------------- 299309 June 2008. Summary of changes for version 20080609: 2994 29951) ACPI CA Core Subsystem: 2996 2997Implemented a workaround for reversed _PRT entries. A significant number of 2998BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This 2999change dynamically detects and repairs this problem. Provides compatibility 3000with MS ACPI. BZ 6859 3001 3002Simplified the internal ACPI hardware interfaces to eliminate the locking 3003flag parameter from Register Read/Write. Added a new external interface, 3004AcpiGetRegisterUnlocked. 3005 3006Fixed a problem where the invocation of a GPE control method could hang. This 3007was a regression introduced in 20080514. The new method argument count 3008validation mechanism can enter an infinite loop when a GPE method is 3009dispatched. Problem fixed by removing the obsolete code that passed GPE block 3010information to the notify handler via the control method parameter pointer. 3011 3012Fixed a problem where the _SST execution status was incorrectly returned to 3013the caller of AcpiEnterSleepStatePrep. This was a regression introduced in 301420080514. _SST is optional and a NOT_FOUND exception should never be 3015returned. BZ 716 3016 3017Fixed a problem where a deleted object could be accessed from within the AML 3018parser. This was a regression introduced in version 20080123 as a fix for the 3019Unload operator. Lin Ming. BZ 10669 3020 3021Cleaned up the debug operand dump mechanism. Eliminated unnecessary operands 3022and eliminated the use of a negative index in a loop. Operands are now 3023displayed in the correct order, not backwards. This also fixes a regression 3024introduced in 20080514 on 64-bit systems where the elimination of 3025ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ 715 3026 3027Fixed a possible memory leak in EvPciConfigRegionSetup where the error exit 3028path did not delete a locally allocated structure. 3029 3030Updated definitions for the DMAR and SRAT tables to synchronize with the 3031current specifications. Includes disassembler support. 3032 3033Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect 3034loop termination value was used. Loop terminated on iteration early, missing 3035one mutex. Linn Crosetto 3036 3037Example Code and Data Size: These are the sizes for the OS-independent 3038acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3039debug version of the code includes the debug output trace mechanism and has a 3040much larger code and data size. 3041 3042 Previous Release: 3043 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 3044 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 3045 Current Release: 3046 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 3047 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 3048 30492) iASL Compiler/Disassembler and Tools: 3050 3051Disassembler: Implemented support for EisaId() within _CID objects. Now 3052disassemble integer _CID objects back to EisaId invocations, including 3053multiple integers within _CID packages. Includes single-step support for 3054debugger also. 3055 3056Disassembler: Added support for DMAR and SRAT table definition changes. 3057 3058---------------------------------------- 305914 May 2008. Summary of changes for version 20080514: 3060 30611) ACPI CA Core Subsystem: 3062 3063Fixed a problem where GPEs were enabled too early during the ACPICA 3064initialization. This could lead to "handler not installed" errors on some 3065machines. Moved GPE enable until after _REG/_STA/_INI methods are run. This 3066ensures that all operation regions and devices throughout the namespace have 3067been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916. 3068 3069Implemented a change to the enter sleep code. Moved execution of the _GTS 3070method to just before setting sleep enable bit. The execution was moved from 3071AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed 3072immediately before the SLP_EN bit is set, as per the ACPI specification. 3073Luming Yu, BZ 1653. 3074 3075Implemented a fix to disable unknown GPEs (2nd version). Now always disable 3076the GPE, even if ACPICA thinks that that it is already disabled. It is 3077possible that the AML or some other code has enabled the GPE unbeknownst to 3078the ACPICA code. 3079 3080Fixed a problem with the Field operator where zero-length fields would return 3081an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length ASL 3082field declarations in Field(), BankField(), and IndexField(). BZ 10606. 3083 3084Implemented a fix for the Load operator, now load the table at the namespace 3085root. This reverts a change introduced in version 20071019. The table is now 3086loaded at the namespace root even though this goes against the ACPI 3087specification. This provides compatibility with other ACPI implementations. 3088The ACPI specification will be updated to reflect this in ACPI 4.0. Lin Ming. 3089 3090Fixed a problem where ACPICA would not Load() tables with unusual signatures. 3091Now ignore ACPI table signature for Load() operator. Only "SSDT" is 3092acceptable to the ACPI spec, but tables are seen with OEMx and null sigs. 3093Therefore, signature validation is worthless. Apparently MS ACPI accepts such 3094signatures, ACPICA must be compatible. BZ 10454. 3095 3096Fixed a possible negative array index in AcpiUtValidateException. Added NULL 3097fields to the exception string arrays to eliminate a -1 subtraction on the 3098SubStatus field. 3099 3100Updated the debug tracking macros to reduce overall code and data size. 3101Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings 3102instead of pointers to static strings. Jan Beulich and Bob Moore. 3103 3104Implemented argument count checking in control method invocation via 3105AcpiEvaluateObject. Now emit an error if too few arguments, warning if too 3106many. This applies only to extern programmatic control method execution, not 3107method-to-method calls within the AML. Lin Ming. 3108 3109Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is no 3110longer needed, especially with the removal of 16-bit support. It was replaced 3111mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64 bit on 311232/64-bit platforms is required. 3113 3114Added the C const qualifier for appropriate string constants -- mostly 3115MODULE_NAME and printf format strings. Jan Beulich. 3116 3117Example Code and Data Size: These are the sizes for the OS-independent 3118acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3119debug version of the code includes the debug output trace mechanism and has a 3120much larger code and data size. 3121 3122 Previous Release: 3123 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 3124 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 3125 Current Release: 3126 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 3127 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 3128 31292) iASL Compiler/Disassembler and Tools: 3130 3131Implemented ACPI table revision ID validation in the disassembler. Zero is 3132always invalid. For DSDTs, the ID controls the interpreter integer width. 1 3133means 32-bit and this is unusual. 2 or greater is 64-bit. 3134 3135---------------------------------------- 313621 March 2008. Summary of changes for version 20080321: 3137 31381) ACPI CA Core Subsystem: 3139 3140Implemented an additional change to the GPE support in order to suppress 3141spurious or stray GPEs. The AcpiEvDisableGpe function will now permanently 3142disable incoming GPEs that are neither enabled nor disabled -- meaning that 3143the GPE is unknown to the system. This should prevent future interrupt floods 3144from that GPE. BZ 6217 (Zhang Rui) 3145 3146Fixed a problem where NULL package elements were not returned to the 3147AcpiEvaluateObject interface correctly. The element was simply ignored 3148instead of returning a NULL ACPI_OBJECT package element, potentially causing 3149a buffer overflow and/or confusing the caller who expected a fixed number of 3150elements. BZ 10132 (Lin Ming, Bob Moore) 3151 3152Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word, Dword, 3153Qword), Field, BankField, and IndexField operators when invoked from inside 3154an executing control method. In this case, these operators created namespace 3155nodes that were incorrectly left marked as permanent nodes instead of 3156temporary nodes. This could cause a problem if there is race condition 3157between an exiting control method and a running namespace walk. (Reported by 3158Linn Crosetto) 3159 3160Fixed a problem where the CreateField and CreateXXXField operators would 3161incorrectly allow duplicate names (the name of the field) with no exception 3162generated. 3163 3164Implemented several changes for Notify handling. Added support for new Notify 3165values (ACPI 2.0+) and improved the Notify debug output. Notify on 3166PowerResource objects is no longer allowed, as per the ACPI specification. 3167(Bob Moore, Zhang Rui) 3168 3169All Reference Objects returned via the AcpiEvaluateObject interface are now 3170marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved for 3171NULL objects - either NULL package elements or unresolved named references. 3172 3173Fixed a problem where an extraneous debug message was produced for package 3174objects (when debugging enabled). The message "Package List length larger 3175than NumElements count" is now produced in the correct case, and is now an 3176error message rather than a debug message. Added a debug message for the 3177opposite case, where NumElements is larger than the Package List (the package 3178will be padded out with NULL elements as per the ACPI spec.) 3179 3180Implemented several improvements for the output of the ASL "Debug" object to 3181clarify and keep all data for a given object on one output line. 3182 3183Fixed two size calculation issues with the variable-length Start Dependent 3184resource descriptor. 3185 3186Example Code and Data Size: These are the sizes for the OS-independent 3187acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3188debug version of the code includes the debug output trace mechanism and has 3189a much larger code and data size. 3190 3191 Previous Release: 3192 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 3193 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 3194 Current Release: 3195 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 3196 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 3197 31982) iASL Compiler/Disassembler and Tools: 3199 3200Fixed a problem with the use of the Switch operator where execution of the 3201containing method by multiple concurrent threads could cause an 3202AE_ALREADY_EXISTS exception. This is caused by the fact that there is no 3203actual Switch opcode, it must be simulated with local named temporary 3204variables and if/else pairs. The solution chosen was to mark any method that 3205uses Switch as Serialized, thus preventing multiple thread entries. BZ 469. 3206 3207---------------------------------------- 320813 February 2008. Summary of changes for version 20080213: 3209 32101) ACPI CA Core Subsystem: 3211 3212Implemented another MS compatibility design change for GPE/Notify handling. 3213GPEs are now cleared/enabled asynchronously to allow all pending notifies to 3214complete first. It is expected that the OSL will queue the enable request 3215behind all pending notify requests (may require changes to the local host OSL 3216in AcpiOsExecute). Alexey Starikovskiy. 3217 3218Fixed a problem where buffer and package objects passed as arguments to a 3219control method via the external AcpiEvaluateObject interface could cause an 3220AE_AML_INTERNAL exception depending on the order and type of operators 3221executed by the target control method. 3222 3223Fixed a problem where resource descriptor size optimization could cause a 3224problem when a _CRS resource template is passed to a _SRS method. The _SRS 3225resource template must use the same descriptors (with the same size) as 3226returned from _CRS. This change affects the following resource descriptors: 3227IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ 9487) 3228 3229Fixed a problem where a CopyObject to RegionField, BankField, and IndexField 3230objects did not perform an implicit conversion as it should. These types must 3231retain their initial type permanently as per the ACPI specification. However, 3232a CopyObject to all other object types should not perform an implicit 3233conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388 3234 3235Fixed a problem with the AcpiGetDevices interface where the mechanism to 3236match device CIDs did not examine the entire list of available CIDs, but 3237instead aborted on the first non-matching CID. Andrew Patterson. 3238 3239Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro was 3240inadvertently changed to return a 16-bit value instead of a 32-bit value, 3241truncating the upper dword of a 64-bit value. This macro is only used to 3242display debug output, so no incorrect calculations were made. Also, 3243reimplemented the macro so that a 64-bit shift is not performed by 3244inefficient compilers. 3245 3246Added missing va_end statements that should correspond with each va_start 3247statement. 3248 3249Example Code and Data Size: These are the sizes for the OS-independent 3250acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3251debug version of the code includes the debug output trace mechanism and has 3252a much larger code and data size. 3253 3254 Previous Release: 3255 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 3256 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 3257 Current Release: 3258 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 3259 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 3260 32612) iASL Compiler/Disassembler and Tools: 3262 3263Implemented full disassembler support for the following new ACPI tables: 3264BERT, EINJ, and ERST. Implemented partial disassembler support for the 3265complicated HEST table. These tables support the Windows Hardware Error 3266Architecture (WHEA). 3267 3268---------------------------------------- 326923 January 2008. Summary of changes for version 20080123: 3270 32711) ACPI CA Core Subsystem: 3272 3273Added the 2008 copyright to all module headers and signons. This affects 3274virtually every file in the ACPICA core subsystem, the iASL compiler, and 3275the tools/utilities. 3276 3277Fixed a problem with the SizeOf operator when used with Package and Buffer 3278objects. These objects have deferred execution for some arguments, and the 3279execution is now completed before the SizeOf is executed. This problem caused 3280unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore) BZ 32819558 3282 3283Implemented an enhancement to the interpreter "slack mode". In the absence of 3284an explicit return or an implicitly returned object from the last executed 3285opcode, a control method will now implicitly return an integer of value 0 for 3286Microsoft compatibility. (Lin Ming) BZ 392 3287 3288Fixed a problem with the Load operator where an exception was not returned in 3289the case where the table is already loaded. (Lin Ming) BZ 463 3290 3291Implemented support for the use of DDBHandles as an Indexed Reference, as per 3292the ACPI spec. (Lin Ming) BZ 486 3293 3294Implemented support for UserTerm (Method invocation) for the Unload operator 3295as per the ACPI spec. (Lin Ming) BZ 580 3296 3297Fixed a problem with the LoadTable operator where the OemId and OemTableId 3298input strings could cause unexpected failures if they were shorter than the 3299maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576 3300 3301Implemented support for UserTerm (Method invocation) for the Unload operator 3302as per the ACPI spec. (Lin Ming) BZ 580 3303 3304Implemented header file support for new ACPI tables - BERT, ERST, EINJ, HEST, 3305IBFT, UEFI, WDAT. Disassembler support is forthcoming. 3306 3307Example Code and Data Size: These are the sizes for the OS-independent 3308acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3309debug version of the code includes the debug output trace mechanism and has 3310a much larger code and data size. 3311 3312 Previous Release: 3313 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 3314 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 3315 Current Release: 3316 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 3317 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 3318 33192) iASL Compiler/Disassembler and Tools: 3320 3321Implemented support in the disassembler for checksum validation on incoming 3322binary DSDTs and SSDTs. If incorrect, a message is displayed within the table 3323header dump at the start of the disassembly. 3324 3325Implemented additional debugging information in the namespace listing file 3326created during compilation. In addition to the namespace hierarchy, the full 3327pathname to each namespace object is displayed. 3328 3329Fixed a problem with the disassembler where invalid ACPI tables could cause 3330faults or infinite loops. 3331 3332Fixed an unexpected parse error when using the optional "parameter types" 3333list in a control method declaration. (Lin Ming) BZ 397 3334 3335Fixed a problem where two External declarations with the same name did not 3336cause an error (Lin Ming) BZ 509 3337 3338Implemented support for full TermArgs (adding Argx, Localx and method 3339invocation) for the ParameterData parameter to the LoadTable operator. (Lin 3340Ming) BZ 583,587 3341 3342---------------------------------------- 334319 December 2007. Summary of changes for version 20071219: 3344 33451) ACPI CA Core Subsystem: 3346 3347Implemented full support for deferred execution for the TermArg string 3348arguments for DataTableRegion. This enables forward references and full 3349operand resolution for the three string arguments. Similar to OperationRegion 3350deferred argument execution.) Lin Ming. BZ 430 3351 3352Implemented full argument resolution support for the BankValue argument to 3353BankField. Previously, only constants were supported, now any TermArg may be 3354used. Lin Ming BZ 387, 393 3355 3356Fixed a problem with AcpiGetDevices where the search of a branch of the 3357device tree could be terminated prematurely. In accordance with the ACPI 3358specification, the search down the current branch is terminated if a device 3359is both not present and not functional (instead of just not present.) Yakui 3360Zhao. 3361 3362Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly if 3363the underlying AML code changed the GPE enable registers. Now, any unknown 3364incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately disabled 3365instead of simply ignored. Rui Zhang. 3366 3367Fixed a problem with Index Fields where the Index register was incorrectly 3368limited to a maximum of 32 bits. Now any size may be used. 3369 3370Fixed a couple memory leaks associated with "implicit return" objects when 3371the AML Interpreter slack mode is enabled. Lin Ming BZ 349 3372 3373Example Code and Data Size: These are the sizes for the OS-independent 3374acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3375debug version of the code includes the debug output trace mechanism and has 3376a much larger code and data size. 3377 3378 Previous Release: 3379 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 3380 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 3381 Current Release: 3382 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 3383 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 3384 3385---------------------------------------- 338614 November 2007. Summary of changes for version 20071114: 3387 33881) ACPI CA Core Subsystem: 3389 3390Implemented event counters for each of the Fixed Events, the ACPI SCI 3391(interrupt) itself, and control methods executed. Named 3392AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively. These 3393should be useful for debugging and statistics. 3394 3395Implemented a new external interface, AcpiGetStatistics, to retrieve the 3396contents of the various event counters. Returns the current values for 3397AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and 3398AcpiMethodCount. The interface can be expanded in the future if new counters 3399are added. Device drivers should use this interface rather than access the 3400counters directly. 3401 3402Fixed a problem with the FromBCD and ToBCD operators. With some compilers, 3403the ShortDivide function worked incorrectly, causing problems with the BCD 3404functions with large input values. A truncation from 64-bit to 32-bit 3405inadvertently occurred. Internal BZ 435. Lin Ming 3406 3407Fixed a problem with Index references passed as method arguments. References 3408passed as arguments to control methods were dereferenced immediately (before 3409control was passed to the called method). The references are now correctly 3410passed directly to the called method. BZ 5389. Lin Ming 3411 3412Fixed a problem with CopyObject used in conjunction with the Index operator. 3413The reference was incorrectly dereferenced before the copy. The reference is 3414now correctly copied. BZ 5391. Lin Ming 3415 3416Fixed a problem with Control Method references within Package objects. These 3417references are now correctly generated. This completes the package 3418construction overhaul that began in version 20071019. 3419 3420Example Code and Data Size: These are the sizes for the OS-independent 3421acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3422debug version of the code includes the debug output trace mechanism and has 3423a much larger code and data size. 3424 3425 Previous Release: 3426 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 3427 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 3428 Current Release: 3429 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 3430 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 3431 3432 34332) iASL Compiler/Disassembler and Tools: 3434 3435The AcpiExec utility now installs handlers for all of the predefined 3436Operation Region types. New types supported are: PCI_Config, CMOS, and 3437PCIBARTarget. 3438 3439Fixed a problem with the 64-bit version of AcpiExec where the extended (64- 3440bit) address fields for the DSDT and FACS within the FADT were not being 3441used, causing truncation of the upper 32-bits of these addresses. Lin Ming 3442and Bob Moore 3443 3444---------------------------------------- 344519 October 2007. Summary of changes for version 20071019: 3446 34471) ACPI CA Core Subsystem: 3448 3449Fixed a problem with the Alias operator when the target of the alias is a 3450named ASL operator that opens a new scope -- Scope, Device, PowerResource, 3451Processor, and ThermalZone. In these cases, any children of the original 3452operator could not be accessed via the alias, potentially causing unexpected 3453AE_NOT_FOUND exceptions. (BZ 9067) 3454 3455Fixed a problem with the Package operator where all named references were 3456created as object references and left otherwise unresolved. According to the 3457ACPI specification, a Package can only contain Data Objects or references to 3458control methods. The implication is that named references to Data Objects 3459(Integer, Buffer, String, Package, BufferField, Field) should be resolved 3460immediately upon package creation. This is the approach taken with this 3461change. References to all other named objects (Methods, Devices, Scopes, 3462etc.) are all now properly created as reference objects. (BZ 5328) 3463 3464Reverted a change to Notify handling that was introduced in version 346520070508. This version changed the Notify handling from asynchronous to 3466fully synchronous (Device driver Notify handling with respect to the Notify 3467ASL operator). It was found that this change caused more problems than it 3468solved and was removed by most users. 3469 3470Fixed a problem with the Increment and Decrement operators where the type of 3471the target object could be unexpectedly and incorrectly changed. (BZ 353) 3472Lin Ming. 3473 3474Fixed a problem with the Load and LoadTable operators where the table 3475location within the namespace was ignored. Instead, the table was always 3476loaded into the root or current scope. Lin Ming. 3477 3478Fixed a problem with the Load operator when loading a table from a buffer 3479object. The input buffer was prematurely zeroed and/or deleted. (BZ 577) 3480 3481Fixed a problem with the Debug object where a store of a DdbHandle reference 3482object to the Debug object could cause a fault. 3483 3484Added a table checksum verification for the Load operator, in the case where 3485the load is from a buffer. (BZ 578). 3486 3487Implemented additional parameter validation for the LoadTable operator. The 3488length of the input strings SignatureString, OemIdString, and OemTableId are 3489now checked for maximum lengths. (BZ 582) Lin Ming. 3490 3491Example Code and Data Size: These are the sizes for the OS-independent 3492acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3493debug version of the code includes the debug output trace mechanism and has 3494a much larger code and data size. 3495 3496 Previous Release: 3497 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 3498 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 3499 Current Release: 3500 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 3501 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 3502 3503 35042) iASL Compiler/Disassembler: 3505 3506Fixed a problem where if a single file was specified and the file did not 3507exist, no error message was emitted. (Introduced with wildcard support in 3508version 20070917.) 3509 3510---------------------------------------- 351119 September 2007. Summary of changes for version 20070919: 3512 35131) ACPI CA Core Subsystem: 3514 3515Designed and implemented new external interfaces to install and remove 3516handlers for ACPI table-related events. Current events that are defined are 3517LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as 3518they are dynamically loaded and unloaded. See AcpiInstallTableHandler and 3519AcpiRemoveTableHandler. (Lin Ming and Bob Moore) 3520 3521Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag 3522(acpi_serialized option on Linux) could cause some systems to hang during 3523initialization. (Bob Moore) BZ 8171 3524 3525Fixed a problem where objects of certain types (Device, ThermalZone, 3526Processor, PowerResource) can be not found if they are declared and 3527referenced from within the same control method (Lin Ming) BZ 341 3528 3529Example Code and Data Size: These are the sizes for the OS-independent 3530acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3531debug version of the code includes the debug output trace mechanism and has 3532a much larger code and data size. 3533 3534 Previous Release: 3535 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 3536 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 3537 Current Release: 3538 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 3539 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 3540 3541 35422) iASL Compiler/Disassembler: 3543 3544Implemented support to allow multiple files to be compiled/disassembled in a 3545single invocation. This includes command line wildcard support for both the 3546Windows and Unix versions of the compiler. This feature simplifies the 3547disassembly and compilation of multiple ACPI tables in a single directory. 3548 3549---------------------------------------- 355008 May 2007. Summary of changes for version 20070508: 3551 35521) ACPI CA Core Subsystem: 3553 3554Implemented a Microsoft compatibility design change for the handling of the 3555Notify AML operator. Previously, notify handlers were dispatched and 3556executed completely asynchronously in a deferred thread. The new design 3557still executes the notify handlers in a different thread, but the original 3558thread that executed the Notify() now waits at a synchronization point for 3559the notify handler to complete. Some machines depend on a synchronous Notify 3560operator in order to operate correctly. 3561 3562Implemented support to allow Package objects to be passed as method 3563arguments to the external AcpiEvaluateObject interface. Previously, this 3564would return the AE_NOT_IMPLEMENTED exception. This feature had not been 3565implemented since there were no reserved control methods that required it 3566until recently. 3567 3568Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs that 3569contained invalid non-zero values in reserved fields could cause later 3570failures because these fields have meaning in later revisions of the FADT. 3571For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The fields 3572are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.) 3573 3574Fixed a problem where the Global Lock handle was not properly updated if a 3575thread that acquired the Global Lock via executing AML code then attempted 3576to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by Joe 3577Liu. 3578 3579Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list 3580could be corrupted if the interrupt being removed was at the head of the 3581list. Reported by Linn Crosetto. 3582 3583Example Code and Data Size: These are the sizes for the OS-independent 3584acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3585debug version of the code includes the debug output trace mechanism and has 3586a much larger code and data size. 3587 3588 Previous Release: 3589 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 3590 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 3591 Current Release: 3592 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 3593 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 3594 3595---------------------------------------- 359620 March 2007. Summary of changes for version 20070320: 3597 35981) ACPI CA Core Subsystem: 3599 3600Implemented a change to the order of interpretation and evaluation of AML 3601operand objects within the AML interpreter. The interpreter now evaluates 3602operands in the order that they appear in the AML stream (and the 3603corresponding ASL code), instead of in the reverse order (after the entire 3604operand list has been parsed). The previous behavior caused several subtle 3605incompatibilities with the Microsoft AML interpreter as well as being 3606somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov. 3607 3608Implemented a change to the ACPI Global Lock support. All interfaces to the 3609global lock now allow the same thread to acquire the lock multiple times. 3610This affects the AcpiAcquireGlobalLock external interface to the global lock 3611as well as the internal use of the global lock to support AML fields -- a 3612control method that is holding the global lock can now simultaneously access 3613AML fields that require global lock protection. Previously, in both cases, 3614this would have resulted in an AE_ALREADY_ACQUIRED exception. The change to 3615AcpiAcquireGlobalLock is of special interest to drivers for the Embedded 3616Controller. There is no change to the behavior of the AML Acquire operator, 3617as this can already be used to acquire a mutex multiple times by the same 3618thread. BZ 8066. With assistance from Alexey Starikovskiy. 3619 3620Fixed a problem where invalid objects could be referenced in the AML 3621Interpreter after error conditions. During operand evaluation, ensure that 3622the internal "Return Object" field is cleared on error and only valid 3623pointers are stored there. Caused occasional access to deleted objects that 3624resulted in "large reference count" warning messages. Valery Podrezov. 3625 3626Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur on 3627deeply nested control method invocations. BZ 7873, local BZ 487. Valery 3628Podrezov. 3629 3630Fixed an internal problem with the handling of result objects on the 3631interpreter result stack. BZ 7872. Valery Podrezov. 3632 3633Removed obsolete code that handled the case where AML_NAME_OP is the target 3634of a reference (Reference.Opcode). This code was no longer necessary. BZ 36357874. Valery Podrezov. 3636 3637Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This was a 3638remnant from the previously discontinued 16-bit support. 3639 3640Example Code and Data Size: These are the sizes for the OS-independent 3641acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3642debug version of the code includes the debug output trace mechanism and has 3643a much larger code and data size. 3644 3645 Previous Release: 3646 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 3647 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 3648 Current Release: 3649 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 3650 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 3651 3652---------------------------------------- 365326 January 2007. Summary of changes for version 20070126: 3654 36551) ACPI CA Core Subsystem: 3656 3657Added the 2007 copyright to all module headers and signons. This affects 3658virtually every file in the ACPICA core subsystem, the iASL compiler, and 3659the utilities. 3660 3661Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable 3662during a table load. A bad pointer was passed in the case where the DSDT is 3663overridden, causing a fault in this case. 3664 3665Example Code and Data Size: These are the sizes for the OS-independent 3666acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3667debug version of the code includes the debug output trace mechanism and has 3668a much larger code and data size. 3669 3670 Previous Release: 3671 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 3672 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 3673 Current Release: 3674 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 3675 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 3676 3677---------------------------------------- 367815 December 2006. Summary of changes for version 20061215: 3679 36801) ACPI CA Core Subsystem: 3681 3682Support for 16-bit ACPICA has been completely removed since it is no longer 3683necessary and it clutters the code. All 16-bit macros, types, and 3684conditional compiles have been removed, cleaning up and simplifying the code 3685across the entire subsystem. DOS support is no longer needed since the 3686bootable Linux firmware kit is now available. 3687 3688The handler for the Global Lock is now removed during AcpiTerminate to 3689enable a clean subsystem restart, via the implementation of the 3690AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz, 3691HP) 3692 3693Implemented enhancements to the multithreading support within the debugger 3694to enable improved multithreading debugging and evaluation of the subsystem. 3695(Valery Podrezov) 3696 3697Debugger: Enhanced the Statistics/Memory command to emit the total (maximum) 3698memory used during the execution, as well as the maximum memory consumed by 3699each of the various object types. (Valery Podrezov) 3700 3701Example Code and Data Size: These are the sizes for the OS-independent 3702acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3703debug version of the code includes the debug output trace mechanism and has 3704a much larger code and data size. 3705 3706 Previous Release: 3707 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 3708 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 3709 Current Release: 3710 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 3711 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 3712 3713 37142) iASL Compiler/Disassembler and Tools: 3715 3716AcpiExec: Implemented a new option (-m) to display full memory use 3717statistics upon subsystem/program termination. (Valery Podrezov) 3718 3719---------------------------------------- 372009 November 2006. Summary of changes for version 20061109: 3721 37221) ACPI CA Core Subsystem: 3723 3724Optimized the Load ASL operator in the case where the source operand is an 3725operation region. Simply map the operation region memory, instead of 3726performing a bytewise read. (Region must be of type SystemMemory, see 3727below.) 3728 3729Fixed the Load ASL operator for the case where the source operand is a 3730region field. A buffer object is also allowed as the source operand. BZ 480 3731 3732Fixed a problem where the Load ASL operator allowed the source operand to be 3733an operation region of any type. It is now restricted to regions of type 3734SystemMemory, as per the ACPI specification. BZ 481 3735 3736Additional cleanup and optimizations for the new Table Manager code. 3737 3738AcpiEnable will now fail if all of the required ACPI tables are not loaded 3739(FADT, FACS, DSDT). BZ 477 3740 3741Added #pragma pack(8/4) to acobject.h to ensure that the structures in this 3742header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been 3743manually optimized to be aligned and will not work if it is byte-packed. 3744 3745Example Code and Data Size: These are the sizes for the OS-independent 3746acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3747debug version of the code includes the debug output trace mechanism and has 3748a much larger code and data size. 3749 3750 Previous Release: 3751 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 3752 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 3753 Current Release: 3754 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 3755 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 3756 3757 37582) iASL Compiler/Disassembler and Tools: 3759 3760Fixed a problem where the presence of the _OSI predefined control method 3761within complex expressions could cause an internal compiler error. 3762 3763AcpiExec: Implemented full region support for multiple address spaces. 3764SpaceId is now part of the REGION object. BZ 429 3765 3766---------------------------------------- 376711 October 2006. Summary of changes for version 20061011: 3768 37691) ACPI CA Core Subsystem: 3770 3771Completed an AML interpreter performance enhancement for control method 3772execution. Previously a 2-pass parse/execution, control methods are now 3773completely parsed and executed in a single pass. This improves overall 3774interpreter performance by ~25%, reduces code size, and reduces CPU stack 3775use. (Valery Podrezov + interpreter changes in version 20051202 that 3776eliminated namespace loading during the pass one parse.) 3777 3778Implemented _CID support for PCI Root Bridge detection. If the _HID does not 3779match the predefined PCI Root Bridge IDs, the _CID list (if present) is now 3780obtained and also checked for an ID match. 3781 3782Implemented additional support for the PCI _ADR execution: upsearch until a 3783device scope is found before executing _ADR. This allows PCI_Config 3784operation regions to be declared locally within control methods underneath 3785PCI device objects. 3786 3787Fixed a problem with a possible race condition between threads executing 3788AcpiWalkNamespace and the AML interpreter. This condition was removed by 3789modifying AcpiWalkNamespace to (by default) ignore all temporary namespace 3790entries created during any concurrent control method execution. An 3791additional namespace race condition is known to exist between 3792AcpiWalkNamespace and the Load/Unload ASL operators and is still under 3793investigation. 3794 3795Restructured the AML ParseLoop function, breaking it into several 3796subfunctions in order to reduce CPU stack use and improve maintainability. 3797(Mikhail Kouzmich) 3798 3799AcpiGetHandle: Fix for parameter validation to detect invalid combinations 3800of prefix handle and pathname. BZ 478 3801 3802Example Code and Data Size: These are the sizes for the OS-independent 3803acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3804debug version of the code includes the debug output trace mechanism and has 3805a much larger code and data size. 3806 3807 Previous Release: 3808 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 3809 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 3810 Current Release: 3811 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 3812 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 3813 38142) iASL Compiler/Disassembler and Tools: 3815 3816Ported the -g option (get local ACPI tables) to the new ACPICA Table Manager 3817to restore original behavior. 3818 3819---------------------------------------- 382027 September 2006. Summary of changes for version 20060927: 3821 38221) ACPI CA Core Subsystem: 3823 3824Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister. 3825These functions now use a spinlock for mutual exclusion and the interrupt 3826level indication flag is not needed. 3827 3828Fixed a problem with the Global Lock where the lock could appear to be 3829obtained before it is actually obtained. The global lock semaphore was 3830inadvertently created with one unit instead of zero units. (BZ 464) Fiodor 3831Suietov. 3832 3833Fixed a possible memory leak and fault in AcpiExResolveObjectToValue during 3834a read from a buffer or region field. (BZ 458) Fiodor Suietov. 3835 3836Example Code and Data Size: These are the sizes for the OS-independent 3837acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3838debug version of the code includes the debug output trace mechanism and has 3839a much larger code and data size. 3840 3841 Previous Release: 3842 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 3843 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 3844 Current Release: 3845 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 3846 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 3847 3848 38492) iASL Compiler/Disassembler and Tools: 3850 3851Fixed a compilation problem with the pre-defined Resource Descriptor field 3852names where an "object does not exist" error could be incorrectly generated 3853if the parent ResourceTemplate pathname places the template within a 3854different namespace scope than the current scope. (BZ 7212) 3855 3856Fixed a problem where the compiler could hang after syntax errors detected 3857in an ElseIf construct. (BZ 453) 3858 3859Fixed a problem with the AmlFilename parameter to the DefinitionBlock() 3860operator. An incorrect output filename was produced when this parameter was 3861a null string (""). Now, the original input filename is used as the AML 3862output filename, with an ".aml" extension. 3863 3864Implemented a generic batch command mode for the AcpiExec utility (execute 3865any AML debugger command) (Valery Podrezov). 3866 3867---------------------------------------- 386812 September 2006. Summary of changes for version 20060912: 3869 38701) ACPI CA Core Subsystem: 3871 3872Enhanced the implementation of the "serialized mode" of the interpreter 3873(enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is 3874specified, instead of creating a serialization semaphore per control method, 3875the interpreter lock is simply no longer released before a blocking 3876operation during control method execution. This effectively makes the AML 3877Interpreter single-threaded. The overhead of a semaphore per-method is 3878eliminated. 3879 3880Fixed a regression where an error was no longer emitted if a control method 3881attempts to create 2 objects of the same name. This once again returns 3882AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism that 3883will dynamically serialize the control method to possible prevent future 3884errors. (BZ 440) 3885 3886Integrated a fix for a problem with PCI Express HID detection in the PCI 3887Config Space setup procedure. (BZ 7145) 3888 3889Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the 3890AcpiHwInitialize function - the FADT registers are now validated when the 3891table is loaded. 3892 3893Added two new warnings during FADT verification - 1) if the FADT is larger 3894than the largest known FADT version, and 2) if there is a mismatch between a 389532-bit block address and the 64-bit X counterpart (when both are non-zero.) 3896 3897Example Code and Data Size: These are the sizes for the OS-independent 3898acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3899debug version of the code includes the debug output trace mechanism and has 3900a much larger code and data size. 3901 3902 Previous Release: 3903 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 3904 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 3905 Current Release: 3906 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 3907 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 3908 3909 39102) iASL Compiler/Disassembler and Tools: 3911 3912Fixed a problem with the implementation of the Switch() operator where the 3913temporary variable was declared too close to the actual Switch, instead of 3914at method level. This could cause a problem if the Switch() operator is 3915within a while loop, causing an error on the second iteration. (BZ 460) 3916 3917Disassembler - fix for error emitted for unknown type for target of scope 3918operator. Now, ignore it and continue. 3919 3920Disassembly of an FADT now verifies the input FADT and reports any errors 3921found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs. 3922 3923Disassembly of raw data buffers with byte initialization data now prefixes 3924each output line with the current buffer offset. 3925 3926Disassembly of ASF! table now includes all variable-length data fields at 3927the end of some of the subtables. 3928 3929The disassembler now emits a comment if a buffer appears to be a 3930ResourceTemplate, but cannot be disassembled as such because the EndTag does 3931not appear at the very end of the buffer. 3932 3933AcpiExec - Added the "-t" command line option to enable the serialized mode 3934of the AML interpreter. 3935 3936---------------------------------------- 393731 August 2006. Summary of changes for version 20060831: 3938 39391) ACPI CA Core Subsystem: 3940 3941Miscellaneous fixes for the Table Manager: 3942- Correctly initialize internal common FADT for all 64-bit "X" fields 3943- Fixed a couple table mapping issues during table load 3944- Fixed a couple alignment issues for IA64 3945- Initialize input array to zero in AcpiInitializeTables 3946- Additional parameter validation for AcpiGetTable, AcpiGetTableHeader, 3947AcpiGetTableByIndex 3948 3949Change for GPE support: when a "wake" GPE is received, all wake GPEs are now 3950immediately disabled to prevent the waking GPE from firing again and to 3951prevent other wake GPEs from interrupting the wake process. 3952 3953Added the AcpiGpeCount global that tracks the number of processed GPEs, to 3954be used for debugging systems with a large number of ACPI interrupts. 3955 3956Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in 3957both the ACPICA headers and the disassembler. 3958 3959Example Code and Data Size: These are the sizes for the OS-independent 3960acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3961debug version of the code includes the debug output trace mechanism and has 3962a much larger code and data size. 3963 3964 Previous Release: 3965 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 3966 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 3967 Current Release: 3968 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 3969 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 3970 3971 39722) iASL Compiler/Disassembler and Tools: 3973 3974Disassembler support for the DMAR ACPI table. 3975 3976---------------------------------------- 397723 August 2006. Summary of changes for version 20060823: 3978 39791) ACPI CA Core Subsystem: 3980 3981The Table Manager component has been completely redesigned and 3982reimplemented. The new design is much simpler, and reduces the overall code 3983and data size of the kernel-resident ACPICA by approximately 5%. Also, it is 3984now possible to obtain the ACPI tables very early during kernel 3985initialization, even before dynamic memory management is initialized. 3986(Alexey Starikovskiy, Fiodor Suietov, Bob Moore) 3987 3988Obsolete ACPICA interfaces: 3989 3990- AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel init 3991time). 3992- AcpiLoadTable: Not needed. 3993- AcpiUnloadTable: Not needed. 3994 3995New ACPICA interfaces: 3996 3997- AcpiInitializeTables: Must be called before the table manager can be used. 3998- AcpiReallocateRootTable: Used to transfer the root table to dynamically 3999allocated memory after it becomes available. 4000- AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI tables 4001in the RSDT/XSDT. 4002 4003Other ACPICA changes: 4004 4005- AcpiGetTableHeader returns the actual mapped table header, not a copy. Use 4006AcpiOsUnmapMemory to free this mapping. 4007- AcpiGetTable returns the actual mapped table. The mapping is managed 4008internally and must not be deleted by the caller. Use of this interface 4009causes no additional dynamic memory allocation. 4010- AcpiFindRootPointer: Support for physical addressing has been eliminated, 4011it appeared to be unused. 4012- The interface to AcpiOsMapMemory has changed to be consistent with the 4013other allocation interfaces. 4014- The interface to AcpiOsGetRootPointer has changed to eliminate unnecessary 4015parameters. 4016- ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on 64- 4017bit platforms. Was previously 64 bits on all platforms. 4018- The interface to the ACPI Global Lock acquire/release macros have changed 4019slightly since ACPICA no longer keeps a local copy of the FACS with a 4020constructed pointer to the actual global lock. 4021 4022Porting to the new table manager: 4023 4024- AcpiInitializeTables: Must be called once, and can be called anytime 4025during the OS initialization process. It allows the host to specify an area 4026of memory to be used to store the internal version of the RSDT/XSDT (root 4027table). This allows the host to access ACPI tables before memory management 4028is initialized and running. 4029- AcpiReallocateRootTable: Can be called after memory management is running 4030to copy the root table to a dynamically allocated array, freeing up the 4031scratch memory specified in the call to AcpiInitializeTables. 4032- AcpiSubsystemInitialize: This existing interface is independent of the 4033Table Manager, and does not have to be called before the Table Manager can 4034be used, it only must be called before the rest of ACPICA can be used. 4035- ACPI Tables: Some changes have been made to the names and structure of the 4036actbl.h and actbl1.h header files and may require changes to existing code. 4037For example, bitfields have been completely removed because of their lack of 4038portability across C compilers. 4039- Update interfaces to the Global Lock acquire/release macros if local 4040versions are used. (see acwin.h) 4041 4042Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c 4043 4044New files: tbfind.c 4045 4046Example Code and Data Size: These are the sizes for the OS-independent 4047acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4048debug version of the code includes the debug output trace mechanism and has 4049a much larger code and data size. 4050 4051 Previous Release: 4052 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 4053 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 4054 Current Release: 4055 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 4056 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 4057 4058 40592) iASL Compiler/Disassembler and Tools: 4060 4061No changes for this release. 4062 4063---------------------------------------- 406421 July 2006. Summary of changes for version 20060721: 4065 40661) ACPI CA Core Subsystem: 4067 4068The full source code for the ASL test suite used to validate the iASL 4069compiler and the ACPICA core subsystem is being released with the ACPICA 4070source for the first time. The source is contained in a separate package and 4071consists of over 1100 files that exercise all ASL/AML operators. The package 4072should appear on the Intel/ACPI web site shortly. (Valery Podrezov, Fiodor 4073Suietov) 4074 4075Completed a new design and implementation for support of the ACPI Global 4076Lock. On the OS side, the global lock is now treated as a standard AML 4077mutex. Previously, multiple OS threads could "acquire" the global lock 4078simultaneously. However, this could cause the BIOS to be starved out of the 4079lock - especially in cases such as the Embedded Controller driver where 4080there is a tight coupling between the OS and the BIOS. 4081 4082Implemented an optimization for the ACPI Global Lock interrupt mechanism. 4083The Global Lock interrupt handler no longer queues the execution of a 4084separate thread to signal the global lock semaphore. Instead, the semaphore 4085is signaled directly from the interrupt handler. 4086 4087Implemented support within the AML interpreter for package objects that 4088contain a larger AML length (package list length) than the package element 4089count. In this case, the length of the package is truncated to match the 4090package element count. Some BIOS code apparently modifies the package length 4091on the fly, and this change supports this behavior. Provides compatibility 4092with the MS AML interpreter. (With assistance from Fiodor Suietov) 4093 4094Implemented a temporary fix for the BankValue parameter of a Bank Field to 4095support all constant values, now including the Zero and One opcodes. 4096Evaluation of this parameter must eventually be converted to a full TermArg 4097evaluation. A not-implemented error is now returned (temporarily) for non- 4098constant values for this parameter. 4099 4100Fixed problem reports (Fiodor Suietov) integrated: 4101- Fix for premature object deletion after CopyObject on Operation Region (BZ 4102350) 4103 4104Example Code and Data Size: These are the sizes for the OS-independent 4105acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4106debug version of the code includes the debug output trace mechanism and has 4107a much larger code and data size. 4108 4109 Previous Release: 4110 Non-Debug Version: 80.7K Code, 18.0K Data, 98.7K Total 4111 Debug Version: 160.9K Code, 65.1K Data, 226.0K Total 4112 Current Release: 4113 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 4114 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 4115 4116 41172) iASL Compiler/Disassembler and Tools: 4118 4119No changes for this release. 4120 4121---------------------------------------- 412207 July 2006. Summary of changes for version 20060707: 4123 41241) ACPI CA Core Subsystem: 4125 4126Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers 4127that do not allow the initialization of address pointers within packed 4128structures - even though the hardware itself may support misaligned 4129transfers. Some of the debug data structures are packed by default to 4130minimize size. 4131 4132Added an error message for the case where AcpiOsGetThreadId() returns zero. 4133A non-zero value is required by the core ACPICA code to ensure the proper 4134operation of AML mutexes and recursive control methods. 4135 4136The DSDT is now the only ACPI table that determines whether the AML 4137interpreter is in 32-bit or 64-bit mode. Not really a functional change, but 4138the hooks for per-table 32/64 switching have been removed from the code. A 4139clarification to the ACPI specification is forthcoming in ACPI 3.0B. 4140 4141Fixed a possible leak of an OwnerID in the error path of 4142AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID 4143deletion to a single place in AcpiTbUninstallTable to correct possible leaks 4144when using the AcpiTbDeleteTablesByType interface (with assistance from 4145Lance Ortiz.) 4146 4147Fixed a problem with Serialized control methods where the semaphore 4148associated with the method could be over-signaled after multiple method 4149invocations. 4150 4151Fixed two issues with the locking of the internal namespace data structure. 4152Both the Unload() operator and AcpiUnloadTable interface now lock the 4153namespace during the namespace deletion associated with the table unload 4154(with assistance from Linn Crosetto.) 4155 4156Fixed problem reports (Valery Podrezov) integrated: 4157- Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426) 4158 4159Fixed problem reports (Fiodor Suietov) integrated: 4160- Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369) 4161- On Address Space handler deletion, needless deactivation call (BZ 374) 4162- AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ 375) 4163- Possible memory leak, Notify sub-objects of Processor, Power, ThermalZone 4164(BZ 376) 4165- AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378) 4166- Minimum Length of RSDT should be validated (BZ 379) 4167- AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no 4168Handler (BZ (380) 4169- AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type loaded 4170(BZ 381) 4171 4172Example Code and Data Size: These are the sizes for the OS-independent 4173acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4174debug version of the code includes the debug output trace mechanism and has 4175a much larger code and data size. 4176 4177 Previous Release: 4178 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 4179 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 4180 Current Release: 4181 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 4182 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 4183 4184 41852) iASL Compiler/Disassembler and Tools: 4186 4187Fixed problem reports: 4188Compiler segfault when ASL contains a long (>1024) String declaration (BZ 4189436) 4190 4191---------------------------------------- 419223 June 2006. Summary of changes for version 20060623: 4193 41941) ACPI CA Core Subsystem: 4195 4196Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This 4197allows the type to be customized to the host OS for improved efficiency 4198(since a spinlock is usually a very small object.) 4199 4200Implemented support for "ignored" bits in the ACPI registers. According to 4201the ACPI specification, these bits should be preserved when writing the 4202registers via a read/modify/write cycle. There are 3 bits preserved in this 4203manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11]. 4204 4205Implemented the initial deployment of new OSL mutex interfaces. Since some 4206host operating systems have separate mutex and semaphore objects, this 4207feature was requested. The base code now uses mutexes (and the new mutex 4208interfaces) wherever a binary semaphore was used previously. However, for 4209the current release, the mutex interfaces are defined as macros to map them 4210to the existing semaphore interfaces. Therefore, no OSL changes are required 4211at this time. (See acpiosxf.h) 4212 4213Fixed several problems with the support for the control method SyncLevel 4214parameter. The SyncLevel now works according to the ACPI specification and 4215in concert with the Mutex SyncLevel parameter, since the current SyncLevel 4216is a property of the executing thread. Mutual exclusion for control methods 4217is now implemented with a mutex instead of a semaphore. 4218 4219Fixed three instances of the use of the C shift operator in the bitfield 4220support code (exfldio.c) to avoid the use of a shift value larger than the 4221target data width. The behavior of C compilers is undefined in this case and 4222can cause unpredictable results, and therefore the case must be detected and 4223avoided. (Fiodor Suietov) 4224 4225Added an info message whenever an SSDT or OEM table is loaded dynamically 4226via the Load() or LoadTable() ASL operators. This should improve debugging 4227capability since it will show exactly what tables have been loaded (beyond 4228the tables present in the RSDT/XSDT.) 4229 4230Example Code and Data Size: These are the sizes for the OS-independent 4231acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4232debug version of the code includes the debug output trace mechanism and has 4233a much larger code and data size. 4234 4235 Previous Release: 4236 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 4237 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 4238 Current Release: 4239 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 4240 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 4241 4242 42432) iASL Compiler/Disassembler and Tools: 4244 4245No changes for this release. 4246 4247---------------------------------------- 424808 June 2006. Summary of changes for version 20060608: 4249 42501) ACPI CA Core Subsystem: 4251 4252Converted the locking mutex used for the ACPI hardware to a spinlock. This 4253change should eliminate all problems caused by attempting to acquire a 4254semaphore at interrupt level, and it means that all ACPICA external 4255interfaces that directly access the ACPI hardware can be safely called from 4256interrupt level. OSL code that implements the semaphore interfaces should be 4257able to eliminate any workarounds for being called at interrupt level. 4258 4259Fixed a regression introduced in 20060526 where the ACPI device 4260initialization could be prematurely aborted with an AE_NOT_FOUND if a device 4261did not have an optional _INI method. 4262 4263Fixed an IndexField issue where a write to the Data Register should be 4264limited in size to the AccessSize (width) of the IndexField itself. (BZ 433, 4265Fiodor Suietov) 4266 4267Fixed problem reports (Valery Podrezov) integrated: 4268- Allow store of ThermalZone objects to Debug object (BZ 5369/5370) 4269 4270Fixed problem reports (Fiodor Suietov) integrated: 4271- AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364) 4272 4273Removed four global mutexes that were obsolete and were no longer being 4274used. 4275 4276Example Code and Data Size: These are the sizes for the OS-independent 4277acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4278debug version of the code includes the debug output trace mechanism and has 4279a much larger code and data size. 4280 4281 Previous Release: 4282 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 4283 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 4284 Current Release: 4285 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 4286 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 4287 4288 42892) iASL Compiler/Disassembler and Tools: 4290 4291Fixed a fault when using -g option (get tables from registry) on Windows 4292machines. 4293 4294Fixed problem reports integrated: 4295- Generate error if CreateField NumBits parameter is zero. (BZ 405) 4296- Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor 4297Suietov) 4298- Global table revision override (-r) is ignored (BZ 413) 4299 4300---------------------------------------- 430126 May 2006. Summary of changes for version 20060526: 4302 43031) ACPI CA Core Subsystem: 4304 4305Restructured, flattened, and simplified the internal interfaces for 4306namespace object evaluation - resulting in smaller code, less CPU stack use, 4307and fewer interfaces. (With assistance from Mikhail Kouzmich) 4308 4309Fixed a problem with the CopyObject operator where the first parameter was 4310not typed correctly for the parser, interpreter, compiler, and disassembler. 4311Caused various errors and unexpected behavior. 4312 4313Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits 4314produced incorrect results with some C compilers. Since the behavior of C 4315compilers when the shift value is larger than the datatype width is 4316apparently not well defined, the interpreter now detects this condition and 4317simply returns zero as expected in all such cases. (BZ 395) 4318 4319Fixed problem reports (Valery Podrezov) integrated: 4320- Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329) 4321- Allow interpreter to handle nested method declarations (BZ 5361) 4322 4323Fixed problem reports (Fiodor Suietov) integrated: 4324- AcpiTerminate doesn't free debug memory allocation list objects (BZ 355) 4325- After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ 356) 4326- AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357) 4327- Resource Manager should return AE_TYPE for non-device objects (BZ 358) 4328- Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359) 4329- Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360) 4330- Incomplete cleanup branch in AcpiPsParseAml (BZ 361) 4331- Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362) 4332- AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ 365) 4333- Status of the Global Initialization Handler call not used (BZ 366) 4334- Incorrect object parameter to Global Initialization Handler (BZ 367) 4335 4336Example Code and Data Size: These are the sizes for the OS-independent 4337acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4338debug version of the code includes the debug output trace mechanism and has 4339a much larger code and data size. 4340 4341 Previous Release: 4342 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 4343 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 4344 Current Release: 4345 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 4346 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 4347 4348 43492) iASL Compiler/Disassembler and Tools: 4350 4351Modified the parser to allow the names IO, DMA, and IRQ to be used as 4352namespace identifiers with no collision with existing resource descriptor 4353macro names. This provides compatibility with other ASL compilers and is 4354most useful for disassembly/recompilation of existing tables without parse 4355errors. (With assistance from Thomas Renninger) 4356 4357Disassembler: fixed an incorrect disassembly problem with the 4358DataTableRegion and CopyObject operators. Fixed a possible fault during 4359disassembly of some Alias operators. 4360 4361---------------------------------------- 436212 May 2006. Summary of changes for version 20060512: 4363 43641) ACPI CA Core Subsystem: 4365 4366Replaced the AcpiOsQueueForExecution interface with a new interface named 4367AcpiOsExecute. The major difference is that the new interface does not have 4368a Priority parameter, this appeared to be useless and has been replaced by a 4369Type parameter. The Type tells the host what type of execution is being 4370requested, such as global lock handler, notify handler, GPE handler, etc. 4371This allows the host to queue and execute the request as appropriate for the 4372request type, possibly using different work queues and different priorities 4373for the various request types. This enables fixes for multithreading 4374deadlock problems such as BZ #5534, and will require changes to all existing 4375OS interface layers. (Alexey Starikovskiy and Bob Moore) 4376 4377Fixed a possible memory leak associated with the support for the so-called 4378"implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor 4379Suietov) 4380 4381Fixed a problem with the Load() operator where a table load from an 4382operation region could overwrite an internal table buffer by up to 7 bytes 4383and cause alignment faults on IPF systems. (With assistance from Luming Yu) 4384 4385Example Code and Data Size: These are the sizes for the OS-independent 4386acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4387debug version of the code includes the debug output trace mechanism and has 4388a much larger code and data size. 4389 4390 Previous Release: 4391 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 4392 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 4393 Current Release: 4394 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 4395 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 4396 4397 4398 43992) iASL Compiler/Disassembler and Tools: 4400 4401Disassembler: Implemented support to cross reference the internal namespace 4402and automatically generate ASL External() statements for symbols not defined 4403within the current table being disassembled. This will simplify the 4404disassembly and recompilation of interdependent tables such as SSDTs since 4405these statements will no longer have to be added manually. 4406 4407Disassembler: Implemented experimental support to automatically detect 4408invocations of external control methods and generate appropriate External() 4409statements. This is problematic because the AML cannot be correctly parsed 4410until the number of arguments for each control method is known. Currently, 4411standalone method invocations and invocations as the source operand of a 4412Store() statement are supported. 4413 4414Disassembler: Implemented support for the ASL pseudo-operators LNotEqual, 4415LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()), 4416LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code 4417more readable and likely closer to the original ASL source. 4418 4419---------------------------------------- 442021 April 2006. Summary of changes for version 20060421: 4421 44221) ACPI CA Core Subsystem: 4423 4424Removed a device initialization optimization introduced in 20051216 where 4425the _STA method was not run unless an _INI was also present for the same 4426device. This optimization could cause problems because it could allow _INI 4427methods to be run within a not-present device subtree. (If a not-present 4428device had no _INI, _STA would not be run, the not-present status would not 4429be discovered, and the children of the device would be incorrectly 4430traversed.) 4431 4432Implemented a new _STA optimization where namespace subtrees that do not 4433contain _INI are identified and ignored during device initialization. 4434Selectively running _STA can significantly improve boot time on large 4435machines (with assistance from Len Brown.) 4436 4437Implemented support for the device initialization case where the returned 4438_STA flags indicate a device not-present but functioning. In this case, _INI 4439is not run, but the device children are examined for presence, as per the 4440ACPI specification. 4441 4442Implemented an additional change to the IndexField support in order to 4443conform to MS behavior. The value written to the Index Register is not 4444simply a byte offset, it is a byte offset in units of the access width of 4445the parent Index Field. (Fiodor Suietov) 4446 4447Defined and deployed a new OSL interface, AcpiOsValidateAddress. This 4448interface is called during the creation of all AML operation regions, and 4449allows the host OS to exert control over what addresses it will allow the 4450AML code to access. Operation Regions whose addresses are disallowed will 4451cause a runtime exception when they are actually accessed (will not affect 4452or abort table loading.) See oswinxf or osunixxf for an example 4453implementation. 4454 4455Defined and deployed a new OSL interface, AcpiOsValidateInterface. This 4456interface allows the host OS to match the various "optional" 4457interface/behavior strings for the _OSI predefined control method as 4458appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf 4459for an example implementation. 4460 4461Restructured and corrected various problems in the exception handling code 4462paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod 4463(with assistance from Takayoshi Kochi.) 4464 4465Modified the Linux source converter to ignore quoted string literals while 4466converting identifiers from mixed to lower case. This will correct problems 4467with the disassembler and other areas where such strings must not be 4468modified. 4469 4470The ACPI_FUNCTION_* macros no longer require quotes around the function 4471name. This allows the Linux source converter to convert the names, now that 4472the converter ignores quoted strings. 4473 4474Example Code and Data Size: These are the sizes for the OS-independent 4475acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4476debug version of the code includes the debug output trace mechanism and has 4477a much larger code and data size. 4478 4479 Previous Release: 4480 4481 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 4482 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 4483 Current Release: 4484 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 4485 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 4486 4487 44882) iASL Compiler/Disassembler and Tools: 4489 4490Implemented 3 new warnings for iASL, and implemented multiple warning levels 4491(w2 flag). 4492 44931) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is not 4494WAIT_FOREVER (0xFFFF) and the code does not examine the return value to 4495check for the possible timeout, a warning is issued. 4496 44972) Useless operators: If an ASL operator does not specify an optional target 4498operand and it also does not use the function return value from the 4499operator, a warning is issued since the operator effectively does nothing. 4500 45013) Unreferenced objects: If a namespace object is created, but never 4502referenced, a warning is issued. This is a warning level 2 since there are 4503cases where this is ok, such as when a secondary table is loaded that uses 4504the unreferenced objects. Even so, care is taken to only flag objects that 4505don't look like they will ever be used. For example, the reserved methods 4506(starting with an underscore) are usually not referenced because it is 4507expected that the OS will invoke them. 4508 4509---------------------------------------- 451031 March 2006. Summary of changes for version 20060331: 4511 45121) ACPI CA Core Subsystem: 4513 4514Implemented header file support for the following additional ACPI tables: 4515ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this support, 4516all current and known ACPI tables are now defined in the ACPICA headers and 4517are available for use by device drivers and other software. 4518 4519Implemented support to allow tables that contain ACPI names with invalid 4520characters to be loaded. Previously, this would cause the table load to 4521fail, but since there are several known cases of such tables on existing 4522machines, this change was made to enable ACPI support for them. Also, this 4523matches the behavior of the Microsoft ACPI implementation. 4524 4525Fixed a couple regressions introduced during the memory optimization in the 452620060317 release. The namespace node definition required additional 4527reorganization and an internal datatype that had been changed to 8-bit was 4528restored to 32-bit. (Valery Podrezov) 4529 4530Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState 4531could be passed through to AcpiOsReleaseObject which is unexpected. Such 4532null pointers are now trapped and ignored, matching the behavior of the 4533previous implementation before the deployment of AcpiOsReleaseObject. 4534(Valery Podrezov, Fiodor Suietov) 4535 4536Fixed a memory mapping leak during the deletion of a SystemMemory operation 4537region where a cached memory mapping was not deleted. This became a 4538noticeable problem for operation regions that are defined within frequently 4539used control methods. (Dana Meyers) 4540 4541Reorganized the ACPI table header files into two main files: one for the 4542ACPI tables consumed by the ACPICA core, and another for the miscellaneous 4543ACPI tables that are consumed by the drivers and other software. The various 4544FADT definitions were merged into one common section and three different 4545tables (ACPI 1.0, 1.0+, and 2.0) 4546 4547Example Code and Data Size: These are the sizes for the OS-independent 4548acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4549debug version of the code includes the debug output trace mechanism and has 4550a much larger code and data size. 4551 4552 Previous Release: 4553 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 4554 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 4555 Current Release: 4556 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 4557 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 4558 4559 45602) iASL Compiler/Disassembler and Tools: 4561 4562Disassembler: Implemented support to decode and format all non-AML ACPI 4563tables (tables other than DSDTs and SSDTs.) This includes the new tables 4564added to the ACPICA headers, therefore all current and known ACPI tables are 4565supported. 4566 4567Disassembler: The change to allow ACPI names with invalid characters also 4568enables the disassembly of such tables. Invalid characters within names are 4569changed to '*' to make the name printable; the iASL compiler will still 4570generate an error for such names, however, since this is an invalid ACPI 4571character. 4572 4573Implemented an option for AcpiXtract (-a) to extract all tables found in the 4574input file. The default invocation extracts only the DSDTs and SSDTs. 4575 4576Fixed a couple of gcc generation issues for iASL and AcpiExec and added a 4577makefile for the AcpiXtract utility. 4578 4579---------------------------------------- 458017 March 2006. Summary of changes for version 20060317: 4581 45821) ACPI CA Core Subsystem: 4583 4584Implemented the use of a cache object for all internal namespace nodes. 4585Since there are about 1000 static nodes in a typical system, this will 4586decrease memory use for cache implementations that minimize per-allocation 4587overhead (such as a slab allocator.) 4588 4589Removed the reference count mechanism for internal namespace nodes, since it 4590was deemed unnecessary. This reduces the size of each namespace node by 4591about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit case, 4592and 32 bytes for the 64-bit case. 4593 4594Optimized several internal data structures to reduce object size on 64-bit 4595platforms by packing data within the 64-bit alignment. This includes the 4596frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static 4597instances corresponding to the namespace objects. 4598 4599Added two new strings for the predefined _OSI method: "Windows 2001.1 SP1" 4600and "Windows 2006". 4601 4602Split the allocation tracking mechanism out to a separate file, from 4603utalloc.c to uttrack.c. This mechanism appears to be only useful for 4604application-level code. Kernels may wish to not include uttrack.c in 4605distributions. 4606 4607Removed all remnants of the obsolete ACPI_REPORT_* macros and the associated 4608code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING 4609macros.) 4610 4611Code and Data Size: These are the sizes for the acpica.lib produced by the 4612Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI 4613driver or OSPM code. The debug version of the code includes the debug output 4614trace mechanism and has a much larger code and data size. Note that these 4615values will vary depending on the efficiency of the compiler and the 4616compiler options used during generation. 4617 4618 Previous Release: 4619 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 4620 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 4621 Current Release: 4622 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 4623 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 4624 4625 46262) iASL Compiler/Disassembler and Tools: 4627 4628Implemented an ANSI C version of the acpixtract utility. This version will 4629automatically extract the DSDT and all SSDTs from the input acpidump text 4630file and dump the binary output to separate files. It can also display a 4631summary of the input file including the headers for each table found and 4632will extract any single ACPI table, with any signature. (See 4633source/tools/acpixtract) 4634 4635---------------------------------------- 463610 March 2006. Summary of changes for version 20060310: 4637 46381) ACPI CA Core Subsystem: 4639 4640Tagged all external interfaces to the subsystem with the new 4641ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to assist 4642kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL 4643macro. The default definition is NULL. 4644 4645Added the ACPI_THREAD_ID type for the return value from AcpiOsGetThreadId. 4646This allows the host to define this as necessary to simplify kernel 4647integration. The default definition is ACPI_NATIVE_UINT. 4648 4649Fixed two interpreter problems related to error processing, the deletion of 4650objects, and placing invalid pointers onto the internal operator result 4651stack. BZ 6028, 6151 (Valery Podrezov) 4652 4653Increased the reference count threshold where a warning is emitted for large 4654reference counts in order to eliminate unnecessary warnings on systems with 4655large namespaces (especially 64-bit.) Increased the value from 0x400 to 46560x800. 4657 4658Due to universal disagreement as to the meaning of the 'c' in the calloc() 4659function, the ACPI_MEM_CALLOCATE macro has been renamed to 4660ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'. 4661ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and 4662ACPI_FREE. 4663 4664Code and Data Size: These are the sizes for the acpica.lib produced by the 4665Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI 4666driver or OSPM code. The debug version of the code includes the debug output 4667trace mechanism and has a much larger code and data size. Note that these 4668values will vary depending on the efficiency of the compiler and the 4669compiler options used during generation. 4670 4671 Previous Release: 4672 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 4673 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 4674 Current Release: 4675 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 4676 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 4677 4678 46792) iASL Compiler/Disassembler: 4680 4681Disassembler: implemented support for symbolic resource descriptor 4682references. If a CreateXxxxField operator references a fixed offset within a 4683resource descriptor, a name is assigned to the descriptor and the offset is 4684translated to the appropriate resource tag and pathname. The addition of 4685this support brings the disassembled code very close to the original ASL 4686source code and helps eliminate run-time errors when the disassembled code 4687is modified (and recompiled) in such a way as to invalidate the original 4688fixed offsets. 4689 4690Implemented support for a Descriptor Name as the last parameter to the ASL 4691Register() macro. This parameter was inadvertently left out of the ACPI 4692specification, and will be added for ACPI 3.0b. 4693 4694Fixed a problem where the use of the "_OSI" string (versus the full path 4695"\_OSI") caused an internal compiler error. ("No back ptr to op") 4696 4697Fixed a problem with the error message that occurs when an invalid string is 4698used for a _HID object (such as one with an embedded asterisk: "*PNP010A".) 4699The correct message is now displayed. 4700 4701---------------------------------------- 470217 February 2006. Summary of changes for version 20060217: 4703 47041) ACPI CA Core Subsystem: 4705 4706Implemented a change to the IndexField support to match the behavior of the 4707Microsoft AML interpreter. The value written to the Index register is now a 4708byte offset, no longer an index based upon the width of the Data register. 4709This should fix IndexField problems seen on some machines where the Data 4710register is not exactly one byte wide. The ACPI specification will be 4711clarified on this point. 4712 4713Fixed a problem where several resource descriptor types could overrun the 4714internal descriptor buffer due to size miscalculation: VendorShort, 4715VendorLong, and Interrupt. This was noticed on IA64 machines, but could 4716affect all platforms. 4717 4718Fixed a problem where individual resource descriptors were misaligned within 4719the internal buffer, causing alignment faults on IA64 platforms. 4720 4721Code and Data Size: These are the sizes for the acpica.lib produced by the 4722Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI 4723driver or OSPM code. The debug version of the code includes the debug output 4724trace mechanism and has a much larger code and data size. Note that these 4725values will vary depending on the efficiency of the compiler and the 4726compiler options used during generation. 4727 4728 Previous Release: 4729 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 4730 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 4731 Current Release: 4732 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 4733 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 4734 4735 47362) iASL Compiler/Disassembler: 4737 4738Implemented support for new reserved names: _WDG and _WED are Microsoft 4739extensions for Windows Instrumentation Management, _TDL is a new ACPI- 4740defined method (Throttling Depth Limit.) 4741 4742Fixed a problem where a zero-length VendorShort or VendorLong resource 4743descriptor was incorrectly emitted as a descriptor of length one. 4744 4745---------------------------------------- 474610 February 2006. Summary of changes for version 20060210: 4747 47481) ACPI CA Core Subsystem: 4749 4750Removed a couple of extraneous ACPI_ERROR messages that appeared during 4751normal execution. These became apparent after the conversion from 4752ACPI_DEBUG_PRINT. 4753 4754Fixed a problem where the CreateField operator could hang if the BitIndex or 4755NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359) 4756 4757Fixed a problem where a DeRefOf operation on a buffer object incorrectly 4758failed with an exception. This also fixes a couple of related RefOf and 4759DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387) 4760 4761Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead of 4762AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov, BZ 47635480) 4764 4765Implemented a memory cleanup at the end of the execution of each iteration 4766of an AML While() loop, preventing the accumulation of outstanding objects. 4767(Valery Podrezov, BZ 5427) 4768 4769Eliminated a chunk of duplicate code in the object resolution code. (Valery 4770Podrezov, BZ 5336) 4771 4772Fixed several warnings during the 64-bit code generation. 4773 4774The AcpiSrc source code conversion tool now inserts one line of whitespace 4775after an if() statement that is followed immediately by a comment, improving 4776readability of the Linux code. 4777 4778Code and Data Size: The current and previous library sizes for the core 4779subsystem are shown below. These are the code and data sizes for the 4780acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4781values do not include any ACPI driver or OSPM code. The debug version of the 4782code includes the debug output trace mechanism and has a much larger code 4783and data size. Note that these values will vary depending on the efficiency 4784of the compiler and the compiler options used during generation. 4785 4786 Previous Release: 4787 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 4788 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 4789 Current Release: 4790 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 4791 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 4792 4793 47942) iASL Compiler/Disassembler: 4795 4796Fixed a problem with the disassembly of a BankField operator with a complex 4797expression for the BankValue parameter. 4798 4799---------------------------------------- 480027 January 2006. Summary of changes for version 20060127: 4801 48021) ACPI CA Core Subsystem: 4803 4804Implemented support in the Resource Manager to allow unresolved namestring 4805references within resource package objects for the _PRT method. This support 4806is in addition to the previously implemented unresolved reference support 4807within the AML parser. If the interpreter slack mode is enabled, these 4808unresolved references will be passed through to the caller as a NULL package 4809entry. 4810 4811Implemented and deployed new macros and functions for error and warning 4812messages across the subsystem. These macros are simpler and generate less 4813code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION, 4814ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older 4815macros remain defined to allow ACPI drivers time to migrate to the new 4816macros. 4817 4818Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of the 4819Acquire/Release Lock OSL interfaces. 4820 4821Fixed a problem where Alias ASL operators are sometimes not correctly 4822resolved, in both the interpreter and the iASL compiler. 4823 4824Fixed several problems with the implementation of the ConcatenateResTemplate 4825ASL operator. As per the ACPI specification, zero length buffers are now 4826treated as a single EndTag. One-length buffers always cause a fatal 4827exception. Non-zero length buffers that do not end with a full 2-byte EndTag 4828cause a fatal exception. 4829 4830Fixed a possible structure overwrite in the AcpiGetObjectInfo external 4831interface. (With assistance from Thomas Renninger) 4832 4833Code and Data Size: The current and previous library sizes for the core 4834subsystem are shown below. These are the code and data sizes for the 4835acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4836values do not include any ACPI driver or OSPM code. The debug version of the 4837code includes the debug output trace mechanism and has a much larger code 4838and data size. Note that these values will vary depending on the efficiency 4839of the compiler and the compiler options used during generation. 4840 4841 Previous Release: 4842 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 4843 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 4844 Current Release: 4845 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 4846 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 4847 4848 48492) iASL Compiler/Disassembler: 4850 4851Fixed an internal error that was generated for any forward references to ASL 4852Alias objects. 4853 4854---------------------------------------- 485513 January 2006. Summary of changes for version 20060113: 4856 48571) ACPI CA Core Subsystem: 4858 4859Added 2006 copyright to all module headers and signons. This affects 4860virtually every file in the ACPICA core subsystem, iASL compiler, and the 4861utilities. 4862 4863Enhanced the ACPICA error reporting in order to simplify user migration to 4864the non-debug version of ACPICA. Replaced all instances of the 4865ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN debug 4866levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros, 4867respectively. This preserves all error and warning messages in the non-debug 4868version of the ACPICA code (this has been referred to as the "debug lite" 4869option.) Over 200 cases were converted to create a total of over 380 4870error/warning messages across the ACPICA code. This increases the code and 4871data size of the default non-debug version of the code somewhat (about 13K), 4872but all error/warning reporting may be disabled if desired (and code 4873eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time 4874configuration option. The size of the debug version of ACPICA remains about 4875the same. 4876 4877Fixed a memory leak within the AML Debugger "Set" command. One object was 4878not properly deleted for every successful invocation of the command. 4879 4880Code and Data Size: The current and previous library sizes for the core 4881subsystem are shown below. These are the code and data sizes for the 4882acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4883values do not include any ACPI driver or OSPM code. The debug version of the 4884code includes the debug output trace mechanism and has a much larger code 4885and data size. Note that these values will vary depending on the efficiency 4886of the compiler and the compiler options used during generation. 4887 4888 Previous Release: 4889 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 4890 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 4891 Current Release: 4892 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 4893 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 4894 4895 48962) iASL Compiler/Disassembler: 4897 4898The compiler now officially supports the ACPI 3.0a specification that was 4899released on December 30, 2005. (Specification is available at www.acpi.info) 4900 4901---------------------------------------- 490216 December 2005. Summary of changes for version 20051216: 4903 49041) ACPI CA Core Subsystem: 4905 4906Implemented optional support to allow unresolved names within ASL Package 4907objects. A null object is inserted in the package when a named reference 4908cannot be located in the current namespace. Enabled via the interpreter 4909slack flag, this should eliminate AE_NOT_FOUND exceptions seen on machines 4910that contain such code. 4911 4912Implemented an optimization to the initialization sequence that can improve 4913boot time. During ACPI device initialization, the _STA method is now run if 4914and only if the _INI method exists. The _STA method is used to determine if 4915the device is present; An _INI can only be run if _STA returns present, but 4916it is a waste of time to run the _STA method if the _INI does not exist. 4917(Prototype and assistance from Dong Wei) 4918 4919Implemented use of the C99 uintptr_t for the pointer casting macros if it is 4920available in the current compiler. Otherwise, the default (void *) cast is 4921used as before. 4922 4923Fixed some possible memory leaks found within the execution path of the 4924Break, Continue, If, and CreateField operators. (Valery Podrezov) 4925 4926Fixed a problem introduced in the 20051202 release where an exception is 4927generated during method execution if a control method attempts to declare 4928another method. 4929 4930Moved resource descriptor string constants that are used by both the AML 4931disassembler and AML debugger to the common utilities directory so that 4932these components are independent. 4933 4934Implemented support in the AcpiExec utility (-e switch) to globally ignore 4935exceptions during control method execution (method is not aborted.) 4936 4937Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix 4938generation. 4939 4940Code and Data Size: The current and previous library sizes for the core 4941subsystem are shown below. These are the code and data sizes for the 4942acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4943values do not include any ACPI driver or OSPM code. The debug version of the 4944code includes the debug output trace mechanism and has a much larger code 4945and data size. Note that these values will vary depending on the efficiency 4946of the compiler and the compiler options used during generation. 4947 4948 Previous Release: 4949 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 4950 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 4951 Current Release: 4952 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 4953 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 4954 4955 49562) iASL Compiler/Disassembler: 4957 4958Fixed a problem where a CPU stack overflow fault could occur if a recursive 4959method call was made from within a Return statement. 4960 4961---------------------------------------- 496202 December 2005. Summary of changes for version 20051202: 4963 49641) ACPI CA Core Subsystem: 4965 4966Modified the parsing of control methods to no longer create namespace 4967objects during the first pass of the parse. Objects are now created only 4968during the execute phase, at the moment the namespace creation operator is 4969encountered in the AML (Name, OperationRegion, CreateByteField, etc.) This 4970should eliminate ALREADY_EXISTS exceptions seen on some machines where 4971reentrant control methods are protected by an AML mutex. The mutex will now 4972correctly block multiple threads from attempting to create the same object 4973more than once. 4974 4975Increased the number of available Owner Ids for namespace object tracking 4976from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen on 4977some machines with a large number of ACPI tables (either static or dynamic). 4978 4979Fixed a problem with the AcpiExec utility where a fault could occur when the 4980-b switch (batch mode) is used. 4981 4982Enhanced the namespace dump routine to output the owner ID for each 4983namespace object. 4984 4985Code and Data Size: The current and previous library sizes for the core 4986subsystem are shown below. These are the code and data sizes for the 4987acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4988values do not include any ACPI driver or OSPM code. The debug version of the 4989code includes the debug output trace mechanism and has a much larger code 4990and data size. Note that these values will vary depending on the efficiency 4991of the compiler and the compiler options used during generation. 4992 4993 Previous Release: 4994 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 4995 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 4996 Current Release: 4997 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 4998 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 4999 5000 50012) iASL Compiler/Disassembler: 5002 5003Fixed a parse error during compilation of certain Switch/Case constructs. To 5004simplify the parse, the grammar now allows for multiple Default statements 5005and this error is now detected and flagged during the analysis phase. 5006 5007Disassembler: The disassembly now includes the contents of the original 5008table header within a comment at the start of the file. This includes the 5009name and version of the original ASL compiler. 5010 5011---------------------------------------- 501217 November 2005. Summary of changes for version 20051117: 5013 50141) ACPI CA Core Subsystem: 5015 5016Fixed a problem in the AML parser where the method thread count could be 5017decremented below zero if any errors occurred during the method parse phase. 5018This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some machines. 5019This also fixed a related regression with the mechanism that detects and 5020corrects methods that cannot properly handle reentrancy (related to the 5021deployment of the new OwnerId mechanism.) 5022 5023Eliminated the pre-parsing of control methods (to detect errors) during 5024table load. Related to the problem above, this was causing unwind issues if 5025any errors occurred during the parse, and it seemed to be overkill. A table 5026load should not be aborted if there are problems with any single control 5027method, thus rendering this feature rather pointless. 5028 5029Fixed a problem with the new table-driven resource manager where an internal 5030buffer overflow could occur for small resource templates. 5031 5032Implemented a new external interface, AcpiGetVendorResource. This interface 5033will find and return a vendor-defined resource descriptor within a _CRS or 5034_PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn Helgaas. 5035 5036Removed the length limit (200) on string objects as per the upcoming ACPI 50373.0A specification. This affects the following areas of the interpreter: 1) 5038any implicit conversion of a Buffer to a String, 2) a String object result 5039of the ASL Concatentate operator, 3) the String object result of the ASL 5040ToString operator. 5041 5042Fixed a problem in the Windows OS interface layer (OSL) where a WAIT_FOREVER 5043on a semaphore object would incorrectly timeout. This allows the 5044multithreading features of the AcpiExec utility to work properly under 5045Windows. 5046 5047Updated the Linux makefiles for the iASL compiler and AcpiExec to include 5048the recently added file named "utresrc.c". 5049 5050Code and Data Size: The current and previous library sizes for the core 5051subsystem are shown below. These are the code and data sizes for the 5052acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 5053values do not include any ACPI driver or OSPM code. The debug version of the 5054code includes the debug output trace mechanism and has a much larger code 5055and data size. Note that these values will vary depending on the efficiency 5056of the compiler and the compiler options used during generation. 5057 5058 Previous Release: 5059 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 5060 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 5061 Current Release: 5062 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 5063 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 5064 5065 50662) iASL Compiler/Disassembler: 5067 5068Removed the limit (200) on string objects as per the upcoming ACPI 3.0A 5069specification. For the iASL compiler, this means that string literals within 5070the source ASL can be of any length. 5071 5072Enhanced the listing output to dump the AML code for resource descriptors 5073immediately after the ASL code for each descriptor, instead of in a block at 5074the end of the entire resource template. 5075 5076Enhanced the compiler debug output to dump the entire original parse tree 5077constructed during the parse phase, before any transforms are applied to the 5078tree. The transformed tree is dumped also. 5079 5080---------------------------------------- 508102 November 2005. Summary of changes for version 20051102: 5082 50831) ACPI CA Core Subsystem: 5084 5085Modified the subsystem initialization sequence to improve GPE support. The 5086GPE initialization has been split into two parts in order to defer execution 5087of the _PRW methods (Power Resources for Wake) until after the hardware is 5088fully initialized and the SCI handler is installed. This allows the _PRW 5089methods to access fields protected by the Global Lock. This will fix systems 5090where a NO_GLOBAL_LOCK exception has been seen during initialization. 5091 5092Converted the ACPI internal object disassemble and display code within the 5093AML debugger to fully table-driven operation, reducing code size and 5094increasing maintainability. 5095 5096Fixed a regression with the ConcatenateResTemplate() ASL operator introduced 5097in the 20051021 release. 5098 5099Implemented support for "local" internal ACPI object types within the 5100debugger "Object" command and the AcpiWalkNamespace external interfaces. 5101These local types include RegionFields, BankFields, IndexFields, Alias, and 5102reference objects. 5103 5104Moved common AML resource handling code into a new file, "utresrc.c". This 5105code is shared by both the Resource Manager and the AML Debugger. 5106 5107Code and Data Size: The current and previous library sizes for the core 5108subsystem are shown below. These are the code and data sizes for the 5109acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 5110values do not include any ACPI driver or OSPM code. The debug version of the 5111code includes the debug output trace mechanism and has a much larger code 5112and data size. Note that these values will vary depending on the efficiency 5113of the compiler and the compiler options used during generation. 5114 5115 Previous Release: 5116 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 5117 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 5118 Current Release: 5119 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 5120 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 5121 5122 51232) iASL Compiler/Disassembler: 5124 5125Fixed a problem with very large initializer lists (more than 4000 elements) 5126for both Buffer and Package objects where the parse stack could overflow. 5127 5128Enhanced the pre-compile source code scan for non-ASCII characters to ignore 5129characters within comment fields. The scan is now always performed and is no 5130longer optional, detecting invalid characters within a source file 5131immediately rather than during the parse phase or later. 5132 5133Enhanced the ASL grammar definition to force early reductions on all list- 5134style grammar elements so that the overall parse stack usage is greatly 5135reduced. This should improve performance and reduce the possibility of parse 5136stack overflow. 5137 5138Eliminated all reduce/reduce conflicts in the iASL parser generation. Also, 5139with the addition of a %expected statement, the compiler generates from 5140source with no warnings. 5141 5142Fixed a possible segment fault in the disassembler if the input filename 5143does not contain a "dot" extension (Thomas Renninger). 5144 5145---------------------------------------- 514621 October 2005. Summary of changes for version 20051021: 5147 51481) ACPI CA Core Subsystem: 5149 5150Implemented support for the EM64T and other x86-64 processors. This 5151essentially entails recognizing that these processors support non-aligned 5152memory transfers. Previously, all 64-bit processors were assumed to lack 5153hardware support for non-aligned transfers. 5154 5155Completed conversion of the Resource Manager to nearly full table-driven 5156operation. Specifically, the resource conversion code (convert AML to 5157internal format and the reverse) and the debug code to dump internal 5158resource descriptors are fully table-driven, reducing code and data size and 5159improving maintainability. 5160 5161The OSL interfaces for Acquire and Release Lock now use a 64-bit flag word 5162on 64-bit processors instead of a fixed 32-bit word. (With assistance from 5163Alexey Starikovskiy) 5164 5165Implemented support within the resource conversion code for the Type- 5166Specific byte within the various ACPI 3.0 *WordSpace macros. 5167 5168Fixed some issues within the resource conversion code for the type-specific 5169flags for both Memory and I/O address resource descriptors. For Memory, 5170implemented support for the MTP and TTP flags. For I/O, split the TRS and 5171TTP flags into two separate fields. 5172 5173Code and Data Size: The current and previous library sizes for the core 5174subsystem are shown below. These are the code and data sizes for the 5175acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 5176values do not include any ACPI driver or OSPM code. The debug version of the 5177code includes the debug output trace mechanism and has a much larger code 5178and data size. Note that these values will vary depending on the efficiency 5179of the compiler and the compiler options used during generation. 5180 5181 Previous Release: 5182 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 5183 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 5184 Current Release: 5185 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 5186 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 5187 5188 5189 51902) iASL Compiler/Disassembler: 5191 5192Relaxed a compiler restriction that disallowed a ResourceIndex byte if the 5193corresponding ResourceSource string was not also present in a resource 5194descriptor declaration. This restriction caused problems with existing 5195AML/ASL code that includes the Index byte without the string. When such AML 5196was disassembled, it could not be compiled without modification. Further, 5197the modified code created a resource template with a different size than the 5198original, breaking code that used fixed offsets into the resource template 5199buffer. 5200 5201Removed a recent feature of the disassembler to ignore a lone ResourceIndex 5202byte. This byte is now emitted if present so that the exact AML can be 5203reproduced when the disassembled code is recompiled. 5204 5205Improved comments and text alignment for the resource descriptor code 5206emitted by the disassembler. 5207 5208Implemented disassembler support for the ACPI 3.0 AccessSize field within a 5209Register() resource descriptor. 5210 5211---------------------------------------- 521230 September 2005. Summary of changes for version 20050930: 5213 52141) ACPI CA Core Subsystem: 5215 5216Completed a major overhaul of the Resource Manager code - specifically, 5217optimizations in the area of the AML/internal resource conversion code. The 5218code has been optimized to simplify and eliminate duplicated code, CPU stack 5219use has been decreased by optimizing function parameters and local 5220variables, and naming conventions across the manager have been standardized 5221for clarity and ease of maintenance (this includes function, parameter, 5222variable, and struct/typedef names.) The update may force changes in some 5223driver code, depending on how resources are handled by the host OS. 5224 5225All Resource Manager dispatch and information tables have been moved to a 5226single location for clarity and ease of maintenance. One new file was 5227created, named "rsinfo.c". 5228 5229The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to 5230guarantee that the argument is not evaluated twice, making them less prone 5231to macro side-effects. However, since there exists the possibility of 5232additional stack use if a particular compiler cannot optimize them (such as 5233in the debug generation case), the original macros are optionally available. 5234Note that some invocations of the return_VALUE macro may now cause size 5235mismatch warnings; the return_UINT8 and return_UINT32 macros are provided to 5236eliminate these. (From Randy Dunlap) 5237 5238Implemented a new mechanism to enable debug tracing for individual control 5239methods. A new external interface, AcpiDebugTrace, is provided to enable 5240this mechanism. The intent is to allow the host OS to easily enable and 5241disable tracing for problematic control methods. This interface can be 5242easily exposed to a user or debugger interface if desired. See the file 5243psxface.c for details. 5244 5245AcpiUtCallocate will now return a valid pointer if a length of zero is 5246specified - a length of one is used and a warning is issued. This matches 5247the behavior of AcpiUtAllocate. 5248 5249Code and Data Size: The current and previous library sizes for the core 5250subsystem are shown below. These are the code and data sizes for the 5251acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 5252values do not include any ACPI driver or OSPM code. The debug version of the 5253code includes the debug output trace mechanism and has a much larger code 5254and data size. Note that these values will vary depending on the efficiency 5255of the compiler and the compiler options used during generation. 5256 5257 Previous Release: 5258 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 5259 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 5260 Current Release: 5261 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 5262 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 5263 5264 52652) iASL Compiler/Disassembler: 5266 5267A remark is issued if the effective compile-time length of a package or 5268buffer is zero. Previously, this was a warning. 5269 5270---------------------------------------- 527116 September 2005. Summary of changes for version 20050916: 5272 52731) ACPI CA Core Subsystem: 5274 5275Fixed a problem within the Resource Manager where support for the Generic 5276Register descriptor was not fully implemented. This descriptor is now fully 5277recognized, parsed, disassembled, and displayed. 5278 5279Completely restructured the Resource Manager code to utilize table-driven 5280dispatch and lookup, eliminating many of the large switch() statements. This 5281reduces overall subsystem code size and code complexity. Affects the 5282resource parsing and construction, disassembly, and debug dump output. 5283 5284Cleaned up and restructured the debug dump output for all resource 5285descriptors. Improved readability of the output and reduced code size. 5286 5287Fixed a problem where changes to internal data structures caused the 5288optional ACPI_MUTEX_DEBUG code to fail compilation if specified. 5289 5290Code and Data Size: The current and previous library sizes for the core 5291subsystem are shown below. These are the code and data sizes for the 5292acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 5293values do not include any ACPI driver or OSPM code. The debug version of the 5294code includes the debug output trace mechanism and has a much larger code 5295and data size. Note that these values will vary depending on the efficiency 5296of the compiler and the compiler options used during generation. 5297 5298 Previous Release: 5299 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 5300 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 5301 Current Release: 5302 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 5303 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 5304 5305 53062) iASL Compiler/Disassembler: 5307 5308Updated the disassembler to automatically insert an EndDependentFn() macro 5309into the ASL stream if this macro is missing in the original AML code, 5310simplifying compilation of the resulting ASL module. 5311 5312Fixed a problem in the disassembler where a disassembled ResourceSource 5313string (within a large resource descriptor) was not surrounded by quotes and 5314not followed by a comma, causing errors when the resulting ASL module was 5315compiled. Also, escape sequences within a ResourceSource string are now 5316handled correctly (especially "\\") 5317 5318---------------------------------------- 531902 September 2005. Summary of changes for version 20050902: 5320 53211) ACPI CA Core Subsystem: 5322 5323Fixed a problem with the internal Owner ID allocation and deallocation 5324mechanisms for control method execution and recursive method invocation. 5325This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId" 5326messages seen on some systems. Recursive method invocation depth is 5327currently limited to 255. (Alexey Starikovskiy) 5328 5329Completely eliminated all vestiges of support for the "module-level 5330executable code" until this support is fully implemented and debugged. This 5331should eliminate the NO_RETURN_VALUE exceptions seen during table load on 5332some systems that invoke this support. 5333 5334Fixed a problem within the resource manager code where the transaction flags 5335for a 64-bit address descriptor were handled incorrectly in the type- 5336specific flag byte. 5337 5338Consolidated duplicate code within the address descriptor resource manager 5339code, reducing overall subsystem code size. 5340 5341Fixed a fault when using the AML debugger "disassemble" command to 5342disassemble individual control methods. 5343 5344Removed references to the "release_current" directory within the Unix 5345release package. 5346 5347Code and Data Size: The current and previous core subsystem library sizes 5348are shown below. These are the code and data sizes for the acpica.lib 5349produced by the Microsoft Visual C++ 6.0 compiler. These values do not 5350include any ACPI driver or OSPM code. The debug version of the code includes 5351the debug output trace mechanism and has a much larger code and data size. 5352Note that these values will vary depending on the efficiency of the compiler 5353and the compiler options used during generation. 5354 5355 Previous Release: 5356 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 5357 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 5358 Current Release: 5359 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 5360 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 5361 5362 53632) iASL Compiler/Disassembler: 5364 5365Implemented an error check for illegal duplicate values in the interrupt and 5366dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and 5367Interrupt(). 5368 5369Implemented error checking for the Irq() and IrqNoFlags() macros to detect 5370too many values in the interrupt list (16 max) and invalid values in the 5371list (range 0 - 15) 5372 5373The maximum length string literal within an ASL file is now restricted to 5374200 characters as per the ACPI specification. 5375 5376Fixed a fault when using the -ln option (generate namespace listing). 5377 5378Implemented an error check to determine if a DescriptorName within a 5379resource descriptor has already been used within the current scope. 5380 5381---------------------------------------- 538215 August 2005. Summary of changes for version 20050815: 5383 53841) ACPI CA Core Subsystem: 5385 5386Implemented a full bytewise compare to determine if a table load request is 5387attempting to load a duplicate table. The compare is performed if the table 5388signatures and table lengths match. This will allow different tables with 5389the same OEM Table ID and revision to be loaded - probably against the ACPI 5390specification, but discovered in the field nonetheless. 5391 5392Added the changes.txt logfile to each of the zipped release packages. 5393 5394Code and Data Size: Current and previous core subsystem library sizes are 5395shown below. These are the code and data sizes for the acpica.lib produced 5396by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5397any ACPI driver or OSPM code. The debug version of the code includes the 5398debug output trace mechanism and has a much larger code and data size. Note 5399that these values will vary depending on the efficiency of the compiler and 5400the compiler options used during generation. 5401 5402 Previous Release: 5403 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 5404 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 5405 Current Release: 5406 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 5407 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 5408 5409 54102) iASL Compiler/Disassembler: 5411 5412Fixed a problem where incorrect AML code could be generated for Package 5413objects if optimization is disabled (via the -oa switch). 5414 5415Fixed a problem with where incorrect AML code is generated for variable- 5416length packages when the package length is not specified and the number of 5417initializer values is greater than 255. 5418 5419 5420---------------------------------------- 542129 July 2005. Summary of changes for version 20050729: 5422 54231) ACPI CA Core Subsystem: 5424 5425Implemented support to ignore an attempt to install/load a particular ACPI 5426table more than once. Apparently there exists BIOS code that repeatedly 5427attempts to load the same SSDT upon certain events. With assistance from 5428Venkatesh Pallipadi. 5429 5430Restructured the main interface to the AML parser in order to correctly 5431handle all exceptional conditions. This will prevent leakage of the OwnerId 5432resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on some 5433machines. With assistance from Alexey Starikovskiy. 5434 5435Support for "module level code" has been disabled in this version due to a 5436number of issues that have appeared on various machines. The support can be 5437enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem 5438compilation. When the issues are fully resolved, the code will be enabled by 5439default again. 5440 5441Modified the internal functions for debug print support to define the 5442FunctionName parameter as a (const char *) for compatibility with compiler 5443built-in macros such as __FUNCTION__, etc. 5444 5445Linted the entire ACPICA source tree for both 32-bit and 64-bit. 5446 5447Implemented support to display an object count summary for the AML Debugger 5448commands Object and Methods. 5449 5450Code and Data Size: Current and previous core subsystem library sizes are 5451shown below. These are the code and data sizes for the acpica.lib produced 5452by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5453any ACPI driver or OSPM code. The debug version of the code includes the 5454debug output trace mechanism and has a much larger code and data size. Note 5455that these values will vary depending on the efficiency of the compiler and 5456the compiler options used during generation. 5457 5458 Previous Release: 5459 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 5460 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 5461 Current Release: 5462 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 5463 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 5464 5465 54662) iASL Compiler/Disassembler: 5467 5468Fixed a regression that appeared in the 20050708 version of the compiler 5469where an error message was inadvertently emitted for invocations of the _OSI 5470reserved control method. 5471 5472---------------------------------------- 547308 July 2005. Summary of changes for version 20050708: 5474 54751) ACPI CA Core Subsystem: 5476 5477The use of the CPU stack in the debug version of the subsystem has been 5478considerably reduced. Previously, a debug structure was declared in every 5479function that used the debug macros. This structure has been removed in 5480favor of declaring the individual elements as parameters to the debug 5481functions. This reduces the cumulative stack use during nested execution of 5482ACPI function calls at the cost of a small increase in the code size of the 5483debug version of the subsystem. With assistance from Alexey Starikovskiy and 5484Len Brown. 5485 5486Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent 5487headers to define a macro that will return the current function name at 5488runtime (such as __FUNCTION__ or _func_, etc.) The function name is used by 5489the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the 5490compiler-dependent header, the function name is saved on the CPU stack (one 5491pointer per function.) This mechanism is used because apparently there 5492exists no standard ANSI-C defined macro that that returns the function name. 5493 5494Redesigned and reimplemented the "Owner ID" mechanism used to track 5495namespace objects created/deleted by ACPI tables and control method 5496execution. A bitmap is now used to allocate and free the IDs, thus solving 5497the wraparound problem present in the previous implementation. The size of 5498the namespace node descriptor was reduced by 2 bytes as a result (Alexey 5499Starikovskiy). 5500 5501Removed the UINT32_BIT and UINT16_BIT types that were used for the bitfield 5502flag definitions within the headers for the predefined ACPI tables. These 5503have been replaced by UINT8_BIT in order to increase the code portability of 5504the subsystem. If the use of UINT8 remains a problem, we may be forced to 5505eliminate bitfields entirely because of a lack of portability. 5506 5507Enhanced the performance of the AcpiUtUpdateObjectReference procedure. This 5508is a frequently used function and this improvement increases the performance 5509of the entire subsystem (Alexey Starikovskiy). 5510 5511Fixed several possible memory leaks and the inverse - premature object 5512deletion (Alexey Starikovskiy). 5513 5514Code and Data Size: Current and previous core subsystem library sizes are 5515shown below. These are the code and data sizes for the acpica.lib produced 5516by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5517any ACPI driver or OSPM code. The debug version of the code includes the 5518debug output trace mechanism and has a much larger code and data size. Note 5519that these values will vary depending on the efficiency of the compiler and 5520the compiler options used during generation. 5521 5522 Previous Release: 5523 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 5524 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 5525 Current Release: 5526 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 5527 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 5528 5529---------------------------------------- 553024 June 2005. Summary of changes for version 20050624: 5531 55321) ACPI CA Core Subsystem: 5533 5534Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for 5535the host-defined cache object. This allows the OSL implementation to define 5536and type this object in any manner desired, simplifying the OSL 5537implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for 5538Linux, and should be defined in the OS-specific header file for other 5539operating systems as required. 5540 5541Changed the interface to AcpiOsAcquireObject to directly return the 5542requested object as the function return (instead of ACPI_STATUS.) This 5543change was made for performance reasons, since this is the purpose of the 5544interface in the first place. AcpiOsAcquireObject is now similar to the 5545AcpiOsAllocate interface. 5546 5547Implemented a new AML debugger command named Businfo. This command displays 5548information about all devices that have an associate _PRT object. The _ADR, 5549_HID, _UID, and _CID are displayed for these devices. 5550 5551Modified the initialization sequence in AcpiInitializeSubsystem to call the 5552OSL interface AcpiOslInitialize first, before any local initialization. This 5553change was required because the global initialization now calls OSL 5554interfaces. 5555 5556Enhanced the Dump command to display the entire contents of Package objects 5557(including all sub-objects and their values.) 5558 5559Restructured the code base to split some files because of size and/or 5560because the code logically belonged in a separate file. New files are listed 5561below. All makefiles and project files included in the ACPI CA release have 5562been updated. 5563 utilities/utcache.c /* Local cache interfaces */ 5564 utilities/utmutex.c /* Local mutex support */ 5565 utilities/utstate.c /* State object support */ 5566 interpreter/parser/psloop.c /* Main AML parse loop */ 5567 5568Code and Data Size: Current and previous core subsystem library sizes are 5569shown below. These are the code and data sizes for the acpica.lib produced 5570by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5571any ACPI driver or OSPM code. The debug version of the code includes the 5572debug output trace mechanism and has a much larger code and data size. Note 5573that these values will vary depending on the efficiency of the compiler and 5574the compiler options used during generation. 5575 5576 Previous Release: 5577 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 5578 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 5579 Current Release: 5580 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 5581 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 5582 5583 55842) iASL Compiler/Disassembler: 5585 5586Fixed a regression introduced in version 20050513 where the use of a Package 5587object within a Case() statement caused a compile time exception. The 5588original behavior has been restored (a Match() operator is emitted.) 5589 5590---------------------------------------- 559117 June 2005. Summary of changes for version 20050617: 5592 55931) ACPI CA Core Subsystem: 5594 5595Moved the object cache operations into the OS interface layer (OSL) to allow 5596the host OS to handle these operations if desired (for example, the Linux 5597OSL will invoke the slab allocator). This support is optional; the compile 5598time define ACPI_USE_LOCAL_CACHE may be used to utilize the original cache 5599code in the ACPI CA core. The new OSL interfaces are shown below. See 5600utalloc.c for an example implementation, and acpiosxf.h for the exact 5601interface definitions. With assistance from Alexey Starikovskiy. 5602 AcpiOsCreateCache 5603 AcpiOsDeleteCache 5604 AcpiOsPurgeCache 5605 AcpiOsAcquireObject 5606 AcpiOsReleaseObject 5607 5608Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to return 5609and restore a flags parameter. This fits better with many OS lock models. 5610Note: the current execution state (interrupt handler or not) is no longer 5611passed to these interfaces. If necessary, the OSL must determine this state 5612by itself, a simple and fast operation. With assistance from Alexey 5613Starikovskiy. 5614 5615Fixed a problem in the ACPI table handling where a valid XSDT was assumed 5616present if the revision of the RSDP was 2 or greater. According to the ACPI 5617specification, the XSDT is optional in all cases, and the table manager 5618therefore now checks for both an RSDP >=2 and a valid XSDT pointer. 5619Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs contain 5620only the RSDT. 5621 5622Fixed an interpreter problem with the Mid() operator in the case of an input 5623string where the resulting output string is of zero length. It now correctly 5624returns a valid, null terminated string object instead of a string object 5625with a null pointer. 5626 5627Fixed a problem with the control method argument handling to allow a store 5628to an Arg object that already contains an object of type Device. The Device 5629object is now correctly overwritten. Previously, an error was returned. 5630 5631 5632Enhanced the debugger Find command to emit object values in addition to the 5633found object pathnames. The output format is the same as the dump namespace 5634command. 5635 5636Enhanced the debugger Set command. It now has the ability to set the value 5637of any Named integer object in the namespace (Previously, only method locals 5638and args could be set.) 5639 5640Code and Data Size: Current and previous core subsystem library sizes are 5641shown below. These are the code and data sizes for the acpica.lib produced 5642by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5643any ACPI driver or OSPM code. The debug version of the code includes the 5644debug output trace mechanism and has a much larger code and data size. Note 5645that these values will vary depending on the efficiency of the compiler and 5646the compiler options used during generation. 5647 5648 Previous Release: 5649 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 5650 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 5651 Current Release: 5652 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 5653 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 5654 5655 56562) iASL Compiler/Disassembler: 5657 5658Fixed a regression in the disassembler where if/else/while constructs were 5659output incorrectly. This problem was introduced in the previous release 5660(20050526). This problem also affected the single-step disassembly in the 5661debugger. 5662 5663Fixed a problem where compiling the reserved _OSI method would randomly (but 5664rarely) produce compile errors. 5665 5666Enhanced the disassembler to emit compilable code in the face of incorrect 5667AML resource descriptors. If the optional ResourceSourceIndex is present, 5668but the ResourceSource is not, do not emit the ResourceSourceIndex in the 5669disassembly. Otherwise, the resulting code cannot be compiled without 5670errors. 5671 5672---------------------------------------- 567326 May 2005. Summary of changes for version 20050526: 5674 56751) ACPI CA Core Subsystem: 5676 5677Implemented support to execute Type 1 and Type 2 AML opcodes appearing at 5678the module level (not within a control method.) These opcodes are executed 5679exactly once at the time the table is loaded. This type of code was legal up 5680until the release of ACPI 2.0B (2002) and is now supported within ACPI CA in 5681order to provide backwards compatibility with earlier BIOS implementations. 5682This eliminates the "Encountered executable code at module level" warning 5683that was previously generated upon detection of such code. 5684 5685Fixed a problem in the interpreter where an AE_NOT_FOUND exception could 5686inadvertently be generated during the lookup of namespace objects in the 5687second pass parse of ACPI tables and control methods. It appears that this 5688problem could occur during the resolution of forward references to namespace 5689objects. 5690 5691Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function, 5692corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This 5693allows the deadlock detection debug code to be compiled out in the normal 5694case, improving mutex performance (and overall subsystem performance) 5695considerably. 5696 5697Implemented a handful of miscellaneous fixes for possible memory leaks on 5698error conditions and error handling control paths. These fixes were 5699suggested by FreeBSD and the Coverity Prevent source code analysis tool. 5700 5701Added a check for a null RSDT pointer in AcpiGetFirmwareTable (tbxfroot.c) 5702to prevent a fault in this error case. 5703 5704Code and Data Size: Current and previous core subsystem library sizes are 5705shown below. These are the code and data sizes for the acpica.lib produced 5706by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5707any ACPI driver or OSPM code. The debug version of the code includes the 5708debug output trace mechanism and has a much larger code and data size. Note 5709that these values will vary depending on the efficiency of the compiler and 5710the compiler options used during generation. 5711 5712 Previous Release: 5713 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 5714 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 5715 Current Release: 5716 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 5717 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 5718 5719 57202) iASL Compiler/Disassembler: 5721 5722Implemented support to allow Type 1 and Type 2 ASL operators to appear at 5723the module level (not within a control method.) These operators will be 5724executed once at the time the table is loaded. This type of code was legal 5725up until the release of ACPI 2.0B (2002) and is now supported by the iASL 5726compiler in order to provide backwards compatibility with earlier BIOS ASL 5727code. 5728 5729The ACPI integer width (specified via the table revision ID or the -r 5730override, 32 or 64 bits) is now used internally during compile-time constant 5731folding to ensure that constants are truncated to 32 bits if necessary. 5732Previously, the revision ID value was only emitted in the AML table header. 5733 5734An error message is now generated for the Mutex and Method operators if the 5735SyncLevel parameter is outside the legal range of 0 through 15. 5736 5737Fixed a problem with the Method operator ParameterTypes list handling (ACPI 57383.0). Previously, more than 2 types or 2 arguments generated a syntax error. 5739The actual underlying implementation of method argument typechecking is 5740still under development, however. 5741 5742---------------------------------------- 574313 May 2005. Summary of changes for version 20050513: 5744 57451) ACPI CA Core Subsystem: 5746 5747Implemented support for PCI Express root bridges -- added support for device 5748PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup. 5749 5750The interpreter now automatically truncates incoming 64-bit constants to 32 5751bits if currently executing out of a 32-bit ACPI table (Revision < 2). This 5752also affects the iASL compiler constant folding. (Note: as per below, the 5753iASL compiler no longer allows 64-bit constants within 32-bit tables.) 5754 5755Fixed a problem where string and buffer objects with "static" pointers 5756(pointers to initialization data within an ACPI table) were not handled 5757consistently. The internal object copy operation now always copies the data 5758to a newly allocated buffer, regardless of whether the source object is 5759static or not. 5760 5761Fixed a problem with the FromBCD operator where an implicit result 5762conversion was improperly performed while storing the result to the target 5763operand. Since this is an "explicit conversion" operator, the implicit 5764conversion should never be performed on the output. 5765 5766Fixed a problem with the CopyObject operator where a copy to an existing 5767named object did not always completely overwrite the existing object stored 5768at name. Specifically, a buffer-to-buffer copy did not delete the existing 5769buffer. 5770 5771Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces and 5772structs for consistency. 5773 5774Code and Data Size: Current and previous core subsystem library sizes are 5775shown below. These are the code and data sizes for the acpica.lib produced 5776by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5777any ACPI driver or OSPM code. The debug version of the code includes the 5778debug output trace mechanism and has a much larger code and data size. Note 5779that these values will vary depending on the efficiency of the compiler and 5780the compiler options used during generation. 5781 5782 Previous Release: 5783 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 5784 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 5785 Current Release: (Same sizes) 5786 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 5787 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 5788 5789 57902) iASL Compiler/Disassembler: 5791 5792The compiler now emits a warning if an attempt is made to generate a 64-bit 5793integer constant from within a 32-bit ACPI table (Revision < 2). The integer 5794is truncated to 32 bits. 5795 5796Fixed a problem with large package objects: if the static length of the 5797package is greater than 255, the "variable length package" opcode is 5798emitted. Previously, this caused an error. This requires an update to the 5799ACPI spec, since it currently (incorrectly) states that packages larger than 5800255 elements are not allowed. 5801 5802The disassembler now correctly handles variable length packages and packages 5803larger than 255 elements. 5804 5805---------------------------------------- 580608 April 2005. Summary of changes for version 20050408: 5807 58081) ACPI CA Core Subsystem: 5809 5810Fixed three cases in the interpreter where an "index" argument to an ASL 5811function was still (internally) 32 bits instead of the required 64 bits. 5812This was the Index argument to the Index, Mid, and Match operators. 5813 5814The "strupr" function is now permanently local (AcpiUtStrupr), since this is 5815not a POSIX-defined function and not present in most kernel-level C 5816libraries. All references to the C library strupr function have been removed 5817from the headers. 5818 5819Completed the deployment of static functions/prototypes. All prototypes with 5820the static attribute have been moved from the headers to the owning C file. 5821 5822Implemented an extract option (-e) for the AcpiBin utility (AML binary 5823utility). This option allows the utility to extract individual ACPI tables 5824from the output of AcpiDmp. It provides the same functionality of the 5825acpixtract.pl perl script without the worry of setting the correct perl 5826options. AcpiBin runs on Windows and has not yet been generated/validated in 5827the Linux/Unix environment (but should be soon). 5828 5829Updated and fixed the table dump option for AcpiBin (-d). This option 5830converts a single ACPI table to a hex/ascii file, similar to the output of 5831AcpiDmp. 5832 5833Code and Data Size: Current and previous core subsystem library sizes are 5834shown below. These are the code and data sizes for the acpica.lib produced 5835by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5836any ACPI driver or OSPM code. The debug version of the code includes the 5837debug output trace mechanism and has a much larger code and data size. Note 5838that these values will vary depending on the efficiency of the compiler and 5839the compiler options used during generation. 5840 5841 Previous Release: 5842 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 5843 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 5844 Current Release: 5845 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 5846 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 5847 5848 58492) iASL Compiler/Disassembler: 5850 5851Disassembler fix: Added a check to ensure that the table length found in the 5852ACPI table header within the input file is not longer than the actual input 5853file size. This indicates some kind of file or table corruption. 5854 5855---------------------------------------- 585629 March 2005. Summary of changes for version 20050329: 5857 58581) ACPI CA Core Subsystem: 5859 5860An error is now generated if an attempt is made to create a Buffer Field of 5861length zero (A CreateField with a length operand of zero.) 5862 5863The interpreter now issues a warning whenever executable code at the module 5864level is detected during ACPI table load. This will give some idea of the 5865prevalence of this type of code. 5866 5867Implemented support for references to named objects (other than control 5868methods) within package objects. 5869 5870Enhanced package object output for the debug object. Package objects are now 5871completely dumped, showing all elements. 5872 5873Enhanced miscellaneous object output for the debug object. Any object can 5874now be written to the debug object (for example, a device object can be 5875written, and the type of the object will be displayed.) 5876 5877The "static" qualifier has been added to all local functions across both the 5878core subsystem and the iASL compiler. 5879 5880The number of "long" lines (> 80 chars) within the source has been 5881significantly reduced, by about 1/3. 5882 5883Cleaned up all header files to ensure that all CA/iASL functions are 5884prototyped (even static functions) and the formatting is consistent. 5885 5886Two new header files have been added, acopcode.h and acnames.h. 5887 5888Removed several obsolete functions that were no longer used. 5889 5890Code and Data Size: Current and previous core subsystem library sizes are 5891shown below. These are the code and data sizes for the acpica.lib produced 5892by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5893any ACPI driver or OSPM code. The debug version of the code includes the 5894debug output trace mechanism and has a much larger code and data size. Note 5895that these values will vary depending on the efficiency of the compiler and 5896the compiler options used during generation. 5897 5898 Previous Release: 5899 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 5900 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 5901 Current Release: 5902 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 5903 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 5904 5905 5906 59072) iASL Compiler/Disassembler: 5908 5909Fixed a problem with the resource descriptor generation/support. For the 5910ResourceSourceIndex and the ResourceSource fields, both must be present, or 5911both must be not present - can't have one without the other. 5912 5913The compiler now returns non-zero from the main procedure if any errors have 5914occurred during the compilation. 5915 5916 5917---------------------------------------- 591809 March 2005. Summary of changes for version 20050309: 5919 59201) ACPI CA Core Subsystem: 5921 5922The string-to-buffer implicit conversion code has been modified again after 5923a change to the ACPI specification. In order to match the behavior of the 5924other major ACPI implementation, the target buffer is no longer truncated if 5925the source string is smaller than an existing target buffer. This change 5926requires an update to the ACPI spec, and should eliminate the recent 5927AE_AML_BUFFER_LIMIT issues. 5928 5929The "implicit return" support was rewritten to a new algorithm that solves 5930the general case. Rather than attempt to determine when a method is about to 5931exit, the result of every ASL operator is saved momentarily until the very 5932next ASL operator is executed. Therefore, no matter how the method exits, 5933there will always be a saved implicit return value. This feature is only 5934enabled with the AcpiGbl_EnableInterpreterSlack flag, and should eliminate 5935AE_AML_NO_RETURN_VALUE errors when enabled. 5936 5937Implemented implicit conversion support for the predicate (operand) of the 5938If, Else, and While operators. String and Buffer arguments are automatically 5939converted to Integers. 5940 5941Changed the string-to-integer conversion behavior to match the new ACPI 5942errata: "If no integer object exists, a new integer is created. The ASCII 5943string is interpreted as a hexadecimal constant. Each string character is 5944interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting 5945with the first character as the most significant digit, and ending with the 5946first non-hexadecimal character or end-of-string." This means that the first 5947non-hex character terminates the conversion and this is the code that was 5948changed. 5949 5950Fixed a problem where the ObjectType operator would fail (fault) when used 5951on an Index of a Package which pointed to a null package element. The 5952operator now properly returns zero (Uninitialized) in this case. 5953 5954Fixed a problem where the While operator used excessive memory by not 5955properly popping the result stack during execution. There was no memory leak 5956after execution, however. (Code provided by Valery Podrezov.) 5957 5958Fixed a problem where references to control methods within Package objects 5959caused the method to be invoked, instead of producing a reference object 5960pointing to the method. 5961 5962Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree) to 5963improve performance and reduce code size. (Code provided by Alexey 5964Starikovskiy.) 5965 5966Code and Data Size: Current and previous core subsystem library sizes are 5967shown below. These are the code and data sizes for the acpica.lib produced 5968by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5969any ACPI driver or OSPM code. The debug version of the code includes the 5970debug output trace mechanism and has a much larger code and data size. Note 5971that these values will vary depending on the efficiency of the compiler and 5972the compiler options used during generation. 5973 5974 Previous Release: 5975 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 5976 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 5977 Current Release: 5978 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 5979 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 5980 5981 59822) iASL Compiler/Disassembler: 5983 5984Fixed a problem with the Return operator with no arguments. Since the AML 5985grammar for the byte encoding requires an operand for the Return opcode, the 5986compiler now emits a Return(Zero) for this case. An ACPI specification 5987update has been written for this case. 5988 5989For tables other than the DSDT, namepath optimization is automatically 5990disabled. This is because SSDTs can be loaded anywhere in the namespace, the 5991compiler has no knowledge of where, and thus cannot optimize namepaths. 5992 5993Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was 5994inadvertently omitted from the ACPI specification, and will require an 5995update to the spec. 5996 5997The source file scan for ASCII characters is now optional (-a). This change 5998was made because some vendors place non-ascii characters within comments. 5999However, the scan is simply a brute-force byte compare to ensure all 6000characters in the file are in the range 0x00 to 0x7F. 6001 6002Fixed a problem with the CondRefOf operator where the compiler was 6003inappropriately checking for the existence of the target. Since the point of 6004the operator is to check for the existence of the target at run-time, the 6005compiler no longer checks for the target existence. 6006 6007Fixed a problem where errors generated from the internal AML interpreter 6008during constant folding were not handled properly, causing a fault. 6009 6010Fixed a problem with overly aggressive range checking for the Stall 6011operator. The valid range (max 255) is now only checked if the operand is of 6012type Integer. All other operand types cannot be statically checked. 6013 6014Fixed a problem where control method references within the RefOf, DeRefOf, 6015and ObjectType operators were not treated properly. They are now treated as 6016actual references, not method invocations. 6017 6018Fixed and enhanced the "list namespace" option (-ln). This option was broken 6019a number of releases ago. 6020 6021Improved error handling for the Field, IndexField, and BankField operators. 6022The compiler now cleanly reports and recovers from errors in the field 6023component (FieldUnit) list. 6024 6025Fixed a disassembler problem where the optional ResourceDescriptor fields 6026TRS and TTP were not always handled correctly. 6027 6028Disassembler - Comments in output now use "//" instead of "/*" 6029 6030---------------------------------------- 603128 February 2005. Summary of changes for version 20050228: 6032 60331) ACPI CA Core Subsystem: 6034 6035Fixed a problem where the result of an Index() operator (an object 6036reference) must increment the reference count on the target object for the 6037life of the object reference. 6038 6039Implemented AML Interpreter and Debugger support for the new ACPI 3.0 6040Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and WordSpace 6041resource descriptors. 6042 6043Implemented support in the _OSI method for the ACPI 3.0 "Extended Address 6044Space Descriptor" string, indicating interpreter support for the descriptors 6045above. 6046 6047Implemented header support for the new ACPI 3.0 FADT flag bits. 6048 6049Implemented header support for the new ACPI 3.0 PCI Express bits for the PM1 6050status/enable registers. 6051 6052Updated header support for the MADT processor local Apic struct and MADT 6053platform interrupt source struct for new ACPI 3.0 fields. 6054 6055Implemented header support for the SRAT and SLIT ACPI tables. 6056 6057Implemented the -s switch in AcpiExec to enable the "InterpreterSlack" flag 6058at runtime. 6059 6060Code and Data Size: Current and previous core subsystem library sizes are 6061shown below. These are the code and data sizes for the acpica.lib produced 6062by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6063any ACPI driver or OSPM code. The debug version of the code includes the 6064debug output trace mechanism and has a much larger code and data size. Note 6065that these values will vary depending on the efficiency of the compiler and 6066the compiler options used during generation. 6067 6068 Previous Release: 6069 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 6070 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 6071 Current Release: 6072 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 6073 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 6074 6075 60762) iASL Compiler/Disassembler: 6077 6078Fixed a problem with the internal 64-bit String-to-integer conversion with 6079strings less than two characters long. 6080 6081Fixed a problem with constant folding where the result of the Index() 6082operator can not be considered a constant. This means that Index() cannot be 6083a type3 opcode and this will require an update to the ACPI specification. 6084 6085Disassembler: Implemented support for the TTP, MTP, and TRS resource 6086descriptor fields. These fields were inadvertently ignored and not output in 6087the disassembly of the resource descriptor. 6088 6089 6090 ---------------------------------------- 609111 February 2005. Summary of changes for version 20050211: 6092 60931) ACPI CA Core Subsystem: 6094 6095Implemented ACPI 3.0 support for implicit conversion within the Match() 6096operator. MatchObjects can now be of type integer, buffer, or string instead 6097of just type integer. Package elements are implicitly converted to the type 6098of the MatchObject. This change aligns the behavior of Match() with the 6099behavior of the other logical operators (LLess(), etc.) It also requires an 6100errata change to the ACPI specification as this support was intended for 6101ACPI 3.0, but was inadvertently omitted. 6102 6103Fixed a problem with the internal implicit "to buffer" conversion. Strings 6104that are converted to buffers will cause buffer truncation if the string is 6105smaller than the target buffer. Integers that are converted to buffers will 6106not cause buffer truncation, only zero extension (both as per the ACPI 6107spec.) The problem was introduced when code was added to truncate the 6108buffer, but this should not be performed in all cases, only the string case. 6109 6110Fixed a problem with the Buffer and Package operators where the interpreter 6111would get confused if two such operators were used as operands to an ASL 6112operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result 6113stack was not being popped after the execution of these operators, resulting 6114in an AE_NO_RETURN_VALUE exception. 6115 6116Fixed a problem with constructs of the form Store(Index(...),...). The 6117reference object returned from Index was inadvertently resolved to an actual 6118value. This problem was introduced in version 20050114 when the behavior of 6119Store() was modified to restrict the object types that can be used as the 6120source operand (to match the ACPI specification.) 6121 6122Reduced excessive stack use within the AcpiGetObjectInfo procedure. 6123 6124Added a fix to aclinux.h to allow generation of AcpiExec on Linux. 6125 6126Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct. 6127 6128Code and Data Size: Current and previous core subsystem library sizes are 6129shown below. These are the code and data sizes for the acpica.lib produced 6130by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6131any ACPI driver or OSPM code. The debug version of the code includes the 6132debug output trace mechanism and has a much larger code and data size. Note 6133that these values will vary depending on the efficiency of the compiler and 6134the compiler options used during generation. 6135 6136 Previous Release: 6137 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 6138 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 6139 Current Release: 6140 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 6141 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 6142 6143 61442) iASL Compiler/Disassembler: 6145 6146Fixed a code generation problem in the constant folding optimization code 6147where incorrect code was generated if a constant was reduced to a buffer 6148object (i.e., a reduced type 5 opcode.) 6149 6150Fixed a typechecking problem for the ToBuffer operator. Caused by an 6151incorrect return type in the internal opcode information table. 6152 6153---------------------------------------- 615425 January 2005. Summary of changes for version 20050125: 6155 61561) ACPI CA Core Subsystem: 6157 6158Fixed a recently introduced problem with the Global Lock where the 6159underlying semaphore was not created. This problem was introduced in 6160version 20050114, and caused an AE_AML_NO_OPERAND exception during an 6161Acquire() operation on _GL. 6162 6163The local object cache is now optional, and is disabled by default. Both 6164AcpiExec and the iASL compiler enable the cache because they run in user 6165mode and this enhances their performance. #define ACPI_ENABLE_OBJECT_CACHE 6166to enable the local cache. 6167 6168Fixed an issue in the internal function AcpiUtEvaluateObject concerning the 6169optional "implicit return" support where an error was returned if no return 6170object was expected, but one was implicitly returned. AE_OK is now returned 6171in this case and the implicitly returned object is deleted. 6172AcpiUtEvaluateObject is only occasionally used, and only to execute reserved 6173methods such as _STA and _INI where the return type is known up front. 6174 6175Fixed a few issues with the internal convert-to-integer code. It now returns 6176an error if an attempt is made to convert a null string, a string of only 6177blanks/tabs, or a zero-length buffer. This affects both implicit conversion 6178and explicit conversion via the ToInteger() operator. 6179 6180The internal debug code in AcpiUtAcquireMutex has been commented out. It is 6181not needed for normal operation and should increase the performance of the 6182entire subsystem. The code remains in case it is needed for debug purposes 6183again. 6184 6185The AcpiExec source and makefile are included in the Unix/Linux package for 6186the first time. 6187 6188Code and Data Size: Current and previous core subsystem library sizes are 6189shown below. These are the code and data sizes for the acpica.lib produced 6190by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6191any ACPI driver or OSPM code. The debug version of the code includes the 6192debug output trace mechanism and has a much larger code and data size. Note 6193that these values will vary depending on the efficiency of the compiler and 6194the compiler options used during generation. 6195 6196 Previous Release: 6197 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 6198 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 6199 Current Release: 6200 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 6201 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 6202 62032) iASL Compiler/Disassembler: 6204 6205Switch/Case support: A warning is now issued if the type of the Switch value 6206cannot be determined at compile time. For example, Switch(Arg0) will 6207generate the warning, and the type is assumed to be an integer. As per the 6208ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate the 6209warning. 6210 6211Switch/Case support: Implemented support for buffer and string objects as 6212the switch value. This is an ACPI 3.0 feature, now that LEqual supports 6213buffers and strings. 6214 6215Switch/Case support: The emitted code for the LEqual() comparisons now uses 6216the switch value as the first operand, not the second. The case value is now 6217the second operand, and this allows the case value to be implicitly 6218converted to the type of the switch value, not the other way around. 6219 6220Switch/Case support: Temporary variables are now emitted immediately within 6221the control method, not at the global level. This means that there are now 622236 temps available per-method, not 36 temps per-module as was the case with 6223the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.) 6224 6225---------------------------------------- 622614 January 2005. Summary of changes for version 20050114: 6227 6228Added 2005 copyright to all module headers. This affects every module in 6229the core subsystem, iASL compiler, and the utilities. 6230 62311) ACPI CA Core Subsystem: 6232 6233Fixed an issue with the String-to-Buffer conversion code where the string 6234null terminator was not included in the buffer after conversion, but there 6235is existing ASL that assumes the string null terminator is included. This is 6236the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was 6237introduced in the previous version when the code was updated to correctly 6238set the converted buffer size as per the ACPI specification. The ACPI spec 6239is ambiguous and will be updated to specify that the null terminator must be 6240included in the converted buffer. This also affects the ToBuffer() ASL 6241operator. 6242 6243Fixed a problem with the Mid() ASL/AML operator where it did not work 6244correctly on Buffer objects. Newly created sub-buffers were not being marked 6245as initialized. 6246 6247 6248Fixed a problem in AcpiTbFindTable where incorrect string compares were 6249performed on the OemId and OemTableId table header fields. These fields are 6250not null terminated, so strncmp is now used instead of strcmp. 6251 6252Implemented a restriction on the Store() ASL/AML operator to align the 6253behavior with the ACPI specification. Previously, any object could be used 6254as the source operand. Now, the only objects that may be used are Integers, 6255Buffers, Strings, Packages, Object References, and DDB Handles. If 6256necessary, the original behavior can be restored by enabling the 6257EnableInterpreterSlack flag. 6258 6259Enhanced the optional "implicit return" support to allow an implicit return 6260value from methods that are invoked externally via the AcpiEvaluateObject 6261interface. This enables implicit returns from the _STA and _INI methods, 6262for example. 6263 6264Changed the Revision() ASL/AML operator to return the current version of the 6265AML interpreter, in the YYYYMMDD format. Previously, it incorrectly returned 6266the supported ACPI version (This is the function of the _REV method). 6267 6268Updated the _REV predefined method to return the currently supported version 6269of ACPI, now 3. 6270 6271Implemented batch mode option for the AcpiExec utility (-b). 6272 6273Code and Data Size: Current and previous core subsystem library sizes are 6274shown below. These are the code and data sizes for the acpica.lib produced 6275by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6276any ACPI driver or OSPM code. The debug version of the code includes the 6277debug output trace mechanism and has a much larger code and data size. Note 6278that these values will vary depending on the efficiency of the compiler and 6279the compiler options used during generation. 6280 6281 Previous Release: 6282 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 6283 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 6284 Current Release: 6285 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 6286 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 6287 6288---------------------------------------- 628910 December 2004. Summary of changes for version 20041210: 6290 6291ACPI 3.0 support is nearing completion in both the iASL compiler and the 6292ACPI CA core subsystem. 6293 62941) ACPI CA Core Subsystem: 6295 6296Fixed a problem in the ToDecimalString operator where the resulting string 6297length was incorrectly calculated. The length is now calculated exactly, 6298eliminating incorrect AE_STRING_LIMIT exceptions. 6299 6300Fixed a problem in the ToHexString operator to allow a maximum 200 character 6301string to be produced. 6302 6303Fixed a problem in the internal string-to-buffer and buffer-to-buffer copy 6304routine where the length of the resulting buffer was not truncated to the 6305new size (if the target buffer already existed). 6306 6307Code and Data Size: Current and previous core subsystem library sizes are 6308shown below. These are the code and data sizes for the acpica.lib produced 6309by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6310any ACPI driver or OSPM code. The debug version of the code includes the 6311debug output trace mechanism and has a much larger code and data size. Note 6312that these values will vary depending on the efficiency of the compiler and 6313the compiler options used during generation. 6314 6315 Previous Release: 6316 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 6317 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 6318 Current Release: 6319 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 6320 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 6321 6322 63232) iASL Compiler/Disassembler: 6324 6325Implemented the new ACPI 3.0 resource template macros - DWordSpace, 6326ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace. 6327Includes support in the disassembler. 6328 6329Implemented support for the new (ACPI 3.0) parameter to the Register macro, 6330AccessSize. 6331 6332Fixed a problem where the _HE resource name for the Interrupt macro was 6333referencing bit 0 instead of bit 1. 6334 6335Implemented check for maximum 255 interrupts in the Interrupt macro. 6336 6337Fixed a problem with the predefined resource descriptor names where 6338incorrect AML code was generated if the offset within the resource buffer 6339was 0 or 1. The optimizer shortened the AML code to a single byte opcode 6340but did not update the surrounding package lengths. 6341 6342Changes to the Dma macro: All channels within the channel list must be in 6343the range 0-7. Maximum 8 channels can be specified. BusMaster operand is 6344optional (default is BusMaster). 6345 6346Implemented check for maximum 7 data bytes for the VendorShort macro. 6347 6348The ReadWrite parameter is now optional for the Memory32 and similar macros. 6349 6350---------------------------------------- 635103 December 2004. Summary of changes for version 20041203: 6352 63531) ACPI CA Core Subsystem: 6354 6355The low-level field insertion/extraction code (exfldio) has been completely 6356rewritten to eliminate unnecessary complexity, bugs, and boundary 6357conditions. 6358 6359Fixed a problem in the ToInteger, ToBuffer, ToHexString, and ToDecimalString 6360operators where the input operand could be inadvertently deleted if no 6361conversion was necessary (e.g., if the input to ToInteger was an Integer 6362object.) 6363 6364Fixed a problem with the ToDecimalString and ToHexString where an incorrect 6365exception code was returned if the resulting string would be > 200 chars. 6366AE_STRING_LIMIT is now returned. 6367 6368Fixed a problem with the Concatenate operator where AE_OK was always 6369returned, even if the operation failed. 6370 6371Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128 6372semaphores to be allocated. 6373 6374Code and Data Size: Current and previous core subsystem library sizes are 6375shown below. These are the code and data sizes for the acpica.lib produced 6376by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6377any ACPI driver or OSPM code. The debug version of the code includes the 6378debug output trace mechanism and has a much larger code and data size. Note 6379that these values will vary depending on the efficiency of the compiler and 6380the compiler options used during generation. 6381 6382 Previous Release: 6383 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 6384 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 6385 Current Release: 6386 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 6387 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 6388 6389 63902) iASL Compiler/Disassembler: 6391 6392Fixed typechecking for the ObjectType and SizeOf operators. Problem was 6393recently introduced in 20041119. 6394 6395Fixed a problem with the ToUUID macro where the upper nybble of each buffer 6396byte was inadvertently set to zero. 6397 6398---------------------------------------- 639919 November 2004. Summary of changes for version 20041119: 6400 64011) ACPI CA Core Subsystem: 6402 6403Fixed a problem in the internal ConvertToInteger routine where new integers 6404were not truncated to 32 bits for 32-bit ACPI tables. This routine converts 6405buffers and strings to integers. 6406 6407Implemented support to store a value to an Index() on a String object. This 6408is an ACPI 2.0 feature that had not yet been implemented. 6409 6410Implemented new behavior for storing objects to individual package elements 6411(via the Index() operator). The previous behavior was to invoke the implicit 6412conversion rules if an object was already present at the index. The new 6413behavior is to simply delete any existing object and directly store the new 6414object. Although the ACPI specification seems unclear on this subject, other 6415ACPI implementations behave in this manner. (This is the root of the 6416AE_BAD_HEX_CONSTANT issue.) 6417 6418Modified the RSDP memory scan mechanism to support the extended checksum for 6419ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid 6420RSDP signature is found with a valid checksum. 6421 6422Code and Data Size: Current and previous core subsystem library sizes are 6423shown below. These are the code and data sizes for the acpica.lib produced 6424by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6425any ACPI driver or OSPM code. The debug version of the code includes the 6426debug output trace mechanism and has a much larger code and data size. Note 6427that these values will vary depending on the efficiency of the compiler and 6428the compiler options used during generation. 6429 6430 Previous Release: 6431 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 6432 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 6433 Current Release: 6434 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 6435 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 6436 6437 64382) iASL Compiler/Disassembler: 6439 6440Fixed a missing semicolon in the aslcompiler.y file. 6441 6442---------------------------------------- 644305 November 2004. Summary of changes for version 20041105: 6444 64451) ACPI CA Core Subsystem: 6446 6447Implemented support for FADT revision 2. This was an interim table (between 6448ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register. 6449 6450Implemented optional support to allow uninitialized LocalX and ArgX 6451variables in a control method. The variables are initialized to an Integer 6452object with a value of zero. This support is enabled by setting the 6453AcpiGbl_EnableInterpreterSlack flag to TRUE. 6454 6455Implemented support for Integer objects for the SizeOf operator. Either 4 6456or 8 is returned, depending on the current integer size (32-bit or 64-bit, 6457depending on the parent table revision). 6458 6459Fixed a problem in the implementation of the SizeOf and ObjectType operators 6460where the operand was resolved to a value too early, causing incorrect 6461return values for some objects. 6462 6463Fixed some possible memory leaks during exceptional conditions. 6464 6465Code and Data Size: Current and previous core subsystem library sizes are 6466shown below. These are the code and data sizes for the acpica.lib produced 6467by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6468any ACPI driver or OSPM code. The debug version of the code includes the 6469debug output trace mechanism and has a much larger code and data size. Note 6470that these values will vary depending on the efficiency of the compiler and 6471the compiler options used during generation. 6472 6473 Previous Release: 6474 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 6475 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 6476 Current Release: 6477 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 6478 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 6479 6480 64812) iASL Compiler/Disassembler: 6482 6483Implemented support for all ACPI 3.0 reserved names and methods. 6484 6485Implemented all ACPI 3.0 grammar elements in the front-end, including 6486support for semicolons. 6487 6488Implemented the ACPI 3.0 Function() and ToUUID() macros 6489 6490Fixed a problem in the disassembler where a Scope() operator would not be 6491emitted properly if the target of the scope was in another table. 6492 6493---------------------------------------- 649415 October 2004. Summary of changes for version 20041015: 6495 6496Note: ACPI CA is currently undergoing an in-depth and complete formal 6497evaluation to test/verify the following areas. Other suggestions are 6498welcome. This will result in an increase in the frequency of releases and 6499the number of bug fixes in the next few months. 6500 - Functional tests for all ASL/AML operators 6501 - All implicit/explicit type conversions 6502 - Bit fields and operation regions 6503 - 64-bit math support and 32-bit-only "truncated" math support 6504 - Exceptional conditions, both compiler and interpreter 6505 - Dynamic object deletion and memory leaks 6506 - ACPI 3.0 support when implemented 6507 - External interfaces to the ACPI subsystem 6508 6509 65101) ACPI CA Core Subsystem: 6511 6512Fixed two alignment issues on 64-bit platforms - within debug statements in 6513AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the Address 6514field within the non-aligned ACPI generic address structure. 6515 6516Fixed a problem in the Increment and Decrement operators where incorrect 6517operand resolution could result in the inadvertent modification of the 6518original integer when the integer is passed into another method as an 6519argument and the arg is then incremented/decremented. 6520 6521Fixed a problem in the FromBCD operator where the upper 32-bits of a 64-bit 6522BCD number were truncated during conversion. 6523 6524Fixed a problem in the ToDecimal operator where the length of the resulting 6525string could be set incorrectly too long if the input operand was a Buffer 6526object. 6527 6528Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte (0) 6529within a buffer would prematurely terminate a compare between buffer 6530objects. 6531 6532Added a check for string overflow (>200 characters as per the ACPI 6533specification) during the Concatenate operator with two string operands. 6534 6535Code and Data Size: Current and previous core subsystem library sizes are 6536shown below. These are the code and data sizes for the acpica.lib produced 6537by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6538any ACPI driver or OSPM code. The debug version of the code includes the 6539debug output trace mechanism and has a much larger code and data size. Note 6540that these values will vary depending on the efficiency of the compiler and 6541the compiler options used during generation. 6542 6543 Previous Release: 6544 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 6545 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 6546 Current Release: 6547 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 6548 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 6549 6550 6551 65522) iASL Compiler/Disassembler: 6553 6554Allow the use of the ObjectType operator on uninitialized Locals and Args 6555(returns 0 as per the ACPI specification). 6556 6557Fixed a problem where the compiler would fault if there was a syntax error 6558in the FieldName of all of the various CreateXXXField operators. 6559 6560Disallow the use of lower case letters within the EISAID macro, as per the 6561ACPI specification. All EISAID strings must be of the form "UUUNNNN" Where 6562U is an uppercase letter and N is a hex digit. 6563 6564 6565---------------------------------------- 656606 October 2004. Summary of changes for version 20041006: 6567 65681) ACPI CA Core Subsystem: 6569 6570Implemented support for the ACPI 3.0 Timer operator. This ASL function 6571implements a 64-bit timer with 100 nanosecond granularity. 6572 6573Defined a new OSL interface, AcpiOsGetTimer. This interface is used to 6574implement the ACPI 3.0 Timer operator. This allows the host OS to implement 6575the timer with the best clock available. Also, it keeps the core subsystem 6576out of the clock handling business, since the host OS (usually) performs 6577this function. 6578 6579Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write) 6580functions use a 64-bit address which is part of the packed ACPI Generic 6581Address Structure. Since the structure is non-aligned, the alignment macros 6582are now used to extract the address to a local variable before use. 6583 6584Fixed a problem where the ToInteger operator assumed all input strings were 6585hexadecimal. The operator now handles both decimal strings and hex strings 6586(prefixed with "0x"). 6587 6588Fixed a problem where the string length in the string object created as a 6589result of the internal ConvertToString procedure could be incorrect. This 6590potentially affected all implicit conversions and also the ToDecimalString 6591and ToHexString operators. 6592 6593Fixed two problems in the ToString operator. If the length parameter was 6594zero, an incorrect string object was created and the value of the input 6595length parameter was inadvertently changed from zero to Ones. 6596 6597Fixed a problem where the optional ResourceSource string in the ExtendedIRQ 6598resource macro was ignored. 6599 6600Simplified the interfaces to the internal division functions, reducing code 6601size and complexity. 6602 6603Code and Data Size: Current and previous core subsystem library sizes are 6604shown below. These are the code and data sizes for the acpica.lib produced 6605by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6606any ACPI driver or OSPM code. The debug version of the code includes the 6607debug output trace mechanism and has a much larger code and data size. Note 6608that these values will vary depending on the efficiency of the compiler and 6609the compiler options used during generation. 6610 6611 Previous Release: 6612 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 6613 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 6614 Current Release: 6615 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 6616 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 6617 6618 66192) iASL Compiler/Disassembler: 6620 6621Implemented support for the ACPI 3.0 Timer operator. 6622 6623Fixed a problem where the Default() operator was inadvertently ignored in a 6624Switch/Case block. This was a problem in the translation of the Switch 6625statement to If...Else pairs. 6626 6627Added support to allow a standalone Return operator, with no parentheses (or 6628operands). 6629 6630Fixed a problem with code generation for the ElseIf operator where the 6631translated Else...If parse tree was improperly constructed leading to the 6632loss of some code. 6633 6634---------------------------------------- 663522 September 2004. Summary of changes for version 20040922: 6636 66371) ACPI CA Core Subsystem: 6638 6639Fixed a problem with the implementation of the LNot() operator where "Ones" 6640was not returned for the TRUE case. Changed the code to return Ones instead 6641of (!Arg) which was usually 1. This change affects iASL constant folding for 6642this operator also. 6643 6644Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was not 6645initialized properly -- Now zero the entire buffer in this case where the 6646buffer already exists. 6647 6648Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32 6649Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all 6650related code considerably. This will require changes/updates to all OS 6651interface layers (OSLs.) 6652 6653Implemented a new external interface, AcpiInstallExceptionHandler, to allow 6654a system exception handler to be installed. This handler is invoked upon any 6655run-time exception that occurs during control method execution. 6656 6657Added support for the DSDT in AcpiTbFindTable. This allows the 6658DataTableRegion() operator to access the local copy of the DSDT. 6659 6660Code and Data Size: Current and previous core subsystem library sizes are 6661shown below. These are the code and data sizes for the acpica.lib produced 6662by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6663any ACPI driver or OSPM code. The debug version of the code includes the 6664debug output trace mechanism and has a much larger code and data size. Note 6665that these values will vary depending on the efficiency of the compiler and 6666the compiler options used during generation. 6667 6668 Previous Release: 6669 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 6670 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 6671 Current Release: 6672 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 6673 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 6674 6675 66762) iASL Compiler/Disassembler: 6677 6678Fixed a problem with constant folding and the LNot operator. LNot was 6679returning 1 in the TRUE case, not Ones as per the ACPI specification. This 6680could result in the generation of an incorrect folded/reduced constant. 6681 6682End-Of-File is now allowed within a "//"-style comment. A parse error no 6683longer occurs if such a comment is at the very end of the input ASL source 6684file. 6685 6686Implemented the "-r" option to override the Revision in the table header. 6687The initial use of this option will be to simplify the evaluation of the AML 6688interpreter by allowing a single ASL source module to be compiled for either 668932-bit or 64-bit integers. 6690 6691 6692---------------------------------------- 669327 August 2004. Summary of changes for version 20040827: 6694 66951) ACPI CA Core Subsystem: 6696 6697- Implemented support for implicit object conversion in the non-numeric 6698logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual, and 6699LNotEqual.) Any combination of Integers/Strings/Buffers may now be used; 6700the second operand is implicitly converted on the fly to match the type of 6701the first operand. For example: 6702 6703 LEqual (Source1, Source2) 6704 6705Source1 and Source2 must each evaluate to an integer, a string, or a buffer. 6706The data type of Source1 dictates the required type of Source2. Source2 is 6707implicitly converted if necessary to match the type of Source1. 6708 6709- Updated and corrected the behavior of the string conversion support. The 6710rules concerning conversion of buffers to strings (according to the ACPI 6711specification) are as follows: 6712 6713ToDecimalString - explicit byte-wise conversion of buffer to string of 6714decimal values (0-255) separated by commas. ToHexString - explicit byte-wise 6715conversion of buffer to string of hex values (0-FF) separated by commas. 6716ToString - explicit byte-wise conversion of buffer to string. Byte-by-byte 6717copy with no transform except NULL terminated. Any other implicit buffer-to- 6718string conversion - byte-wise conversion of buffer to string of hex values 6719(0-FF) separated by spaces. 6720 6721- Fixed typo in definition of AcpiGbl_EnableInterpreterSlack. 6722 6723- Fixed a problem in AcpiNsGetPathnameLength where the returned length was 6724one byte too short in the case of a node in the root scope. This could 6725cause a fault during debug output. 6726 6727- Code and Data Size: Current and previous core subsystem library sizes are 6728shown below. These are the code and data sizes for the acpica.lib produced 6729by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6730any ACPI driver or OSPM code. The debug version of the code includes the 6731debug output trace mechanism and has a much larger code and data size. Note 6732that these values will vary depending on the efficiency of the compiler and 6733the compiler options used during generation. 6734 6735 Previous Release: 6736 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 6737 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 6738 Current Release: 6739 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 6740 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 6741 6742 67432) iASL Compiler/Disassembler: 6744 6745- Fixed a Linux generation error. 6746 6747 6748---------------------------------------- 674916 August 2004. Summary of changes for version 20040816: 6750 67511) ACPI CA Core Subsystem: 6752 6753Designed and implemented support within the AML interpreter for the so- 6754called "implicit return". This support returns the result of the last ASL 6755operation within a control method, in the absence of an explicit Return() 6756operator. A few machines depend on this behavior, even though it is not 6757explicitly supported by the ASL language. It is optional support that can 6758be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag. 6759 6760Removed support for the PCI_Config address space from the internal low level 6761hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This 6762support was not used internally, and would not work correctly anyway because 6763the PCI bus number and segment number were not supported. There are 6764separate interfaces for PCI configuration space access because of the unique 6765interface. 6766 6767Code and Data Size: Current and previous core subsystem library sizes are 6768shown below. These are the code and data sizes for the acpica.lib produced 6769by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6770any ACPI driver or OSPM code. The debug version of the code includes the 6771debug output trace mechanism and has a much larger code and data size. Note 6772that these values will vary depending on the efficiency of the compiler and 6773the compiler options used during generation. 6774 6775 Previous Release: 6776 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 6777 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 6778 Current Release: 6779 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 6780 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 6781 6782 67832) iASL Compiler/Disassembler: 6784 6785Fixed a problem where constants in ASL expressions at the root level (not 6786within a control method) could be inadvertently truncated during code 6787generation. This problem was introduced in the 20040715 release. 6788 6789 6790---------------------------------------- 679115 July 2004. Summary of changes for version 20040715: 6792 67931) ACPI CA Core Subsystem: 6794 6795Restructured the internal HW GPE interfaces to pass/track the current state 6796of interrupts (enabled/disabled) in order to avoid possible deadlock and 6797increase flexibility of the interfaces. 6798 6799Implemented a "lexicographical compare" for String and Buffer objects within 6800the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual -- 6801as per further clarification to the ACPI specification. Behavior is similar 6802to C library "strcmp". 6803 6804Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable 6805external function. In the 32-bit non-debug case, the stack use has been 6806reduced from 168 bytes to 32 bytes. 6807 6808Deployed a new run-time configuration flag, AcpiGbl_EnableInterpreterSlack, 6809whose purpose is to allow the AML interpreter to forgive certain bad AML 6810constructs. Default setting is FALSE. 6811 6812Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field IO 6813support code. If enabled, it allows field access to go beyond the end of a 6814region definition if the field is within the region length rounded up to the 6815next access width boundary (a common coding error.) 6816 6817Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to 6818ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also, these 6819symbols are lowercased by the latest version of the AcpiSrc tool. 6820 6821The prototypes for the PCI interfaces in acpiosxf.h have been updated to 6822rename "Register" to simply "Reg" to prevent certain compilers from 6823complaining. 6824 6825Code and Data Size: Current and previous core subsystem library sizes are 6826shown below. These are the code and data sizes for the acpica.lib produced 6827by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6828any ACPI driver or OSPM code. The debug version of the code includes the 6829debug output trace mechanism and has a much larger code and data size. Note 6830that these values will vary depending on the efficiency of the compiler and 6831the compiler options used during generation. 6832 6833 Previous Release: 6834 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 6835 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 6836 Current Release: 6837 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 6838 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 6839 6840 68412) iASL Compiler/Disassembler: 6842 6843Implemented full support for Package objects within the Case() operator. 6844Note: The Break() operator is currently not supported within Case blocks 6845(TermLists) as there is some question about backward compatibility with ACPI 68461.0 interpreters. 6847 6848 6849Fixed a problem where complex terms were not supported properly within the 6850Switch() operator. 6851 6852Eliminated extraneous warning for compiler-emitted reserved names of the 6853form "_T_x". (Used in Switch/Case operators.) 6854 6855Eliminated optimization messages for "_T_x" objects and small constants 6856within the DefinitionBlock operator. 6857 6858 6859---------------------------------------- 686015 June 2004. Summary of changes for version 20040615: 6861 68621) ACPI CA Core Subsystem: 6863 6864Implemented support for Buffer and String objects (as per ACPI 2.0) for the 6865following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 6866LLessEqual. 6867 6868All directory names in the entire source package are lower case, as they 6869were in earlier releases. 6870 6871Implemented "Disassemble" command in the AML debugger that will disassemble 6872a single control method. 6873 6874Code and Data Size: Current and previous core subsystem library sizes are 6875shown below. These are the code and data sizes for the acpica.lib produced 6876by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6877any ACPI driver or OSPM code. The debug version of the code includes the 6878debug output trace mechanism and has a much larger code and data size. Note 6879that these values will vary depending on the efficiency of the compiler and 6880the compiler options used during generation. 6881 6882 Previous Release: 6883 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 6884 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 6885 6886 Current Release: 6887 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 6888 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 6889 6890 68912) iASL Compiler/Disassembler: 6892 6893Implemented support for Buffer and String objects (as per ACPI 2.0) for the 6894following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 6895LLessEqual. 6896 6897All directory names in the entire source package are lower case, as they 6898were in earlier releases. 6899 6900Fixed a fault when using the -g or -d<nofilename> options if the FADT was 6901not found. 6902 6903Fixed an issue with the Windows version of the compiler where later versions 6904of Windows place the FADT in the registry under the name "FADT" and not 6905"FACP" as earlier versions did. This applies when using the -g or - 6906d<nofilename> options. The compiler now looks for both strings as 6907necessary. 6908 6909Fixed a problem with compiler namepath optimization where a namepath within 6910the Scope() operator could not be optimized if the namepath was a subpath of 6911the current scope path. 6912 6913---------------------------------------- 691427 May 2004. Summary of changes for version 20040527: 6915 69161) ACPI CA Core Subsystem: 6917 6918Completed a new design and implementation for EBDA (Extended BIOS Data Area) 6919support in the RSDP scan code. The original code improperly scanned for the 6920EBDA by simply scanning from memory location 0 to 0x400. The correct method 6921is to first obtain the EBDA pointer from within the BIOS data area, then 6922scan 1K of memory starting at the EBDA pointer. There appear to be few if 6923any machines that place the RSDP in the EBDA, however. 6924 6925Integrated a fix for a possible fault during evaluation of BufferField 6926arguments. Obsolete code that was causing the problem was removed. 6927 6928Found and fixed a problem in the Field Support Code where data could be 6929corrupted on a bit field read that starts on an aligned boundary but does 6930not end on an aligned boundary. Merged the read/write "datum length" 6931calculation code into a common procedure. 6932 6933Rolled in a couple of changes to the FreeBSD-specific header. 6934 6935 6936Code and Data Size: Current and previous core subsystem library sizes are 6937shown below. These are the code and data sizes for the acpica.lib produced 6938by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6939any ACPI driver or OSPM code. The debug version of the code includes the 6940debug output trace mechanism and has a much larger code and data size. Note 6941that these values will vary depending on the efficiency of the compiler and 6942the compiler options used during generation. 6943 6944 Previous Release: 6945 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 6946 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 6947 Current Release: 6948 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 6949 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 6950 6951 69522) iASL Compiler/Disassembler: 6953 6954Fixed a generation warning produced by some overly-verbose compilers for a 695564-bit constant. 6956 6957---------------------------------------- 695814 May 2004. Summary of changes for version 20040514: 6959 69601) ACPI CA Core Subsystem: 6961 6962Fixed a problem where hardware GPE enable bits sometimes not set properly 6963during and after GPE method execution. Result of 04/27 changes. 6964 6965Removed extra "clear all GPEs" when sleeping/waking. 6966 6967Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single 6968AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above to 6969the new AcpiEv* calls as appropriate. 6970 6971ACPI_OS_NAME was removed from the OS-specific headers. The default name is 6972now "Microsoft Windows NT" for maximum compatibility. However this can be 6973changed by modifying the acconfig.h file. 6974 6975Allow a single invocation of AcpiInstallNotifyHandler for a handler that 6976traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag. 6977 6978Run _INI methods on ThermalZone objects. This is against the ACPI 6979specification, but there is apparently ASL code in the field that has these 6980_INI methods, and apparently "other" AML interpreters execute them. 6981 6982Performed a full 16/32/64 bit lint that resulted in some small changes. 6983 6984Added a sleep simulation command to the AML debugger to test sleep code. 6985 6986Code and Data Size: Current and previous core subsystem library sizes are 6987shown below. These are the code and data sizes for the acpica.lib produced 6988by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6989any ACPI driver or OSPM code. The debug version of the code includes the 6990debug output trace mechanism and has a much larger code and data size. Note 6991that these values will vary depending on the efficiency of the compiler and 6992the compiler options used during generation. 6993 6994 Previous Release: 6995 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 6996 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 6997 Current Release: 6998 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 6999 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 7000 7001---------------------------------------- 700227 April 2004. Summary of changes for version 20040427: 7003 70041) ACPI CA Core Subsystem: 7005 7006Completed a major overhaul of the GPE handling within ACPI CA. There are 7007now three types of GPEs: wake-only, runtime-only, and combination wake/run. 7008The only GPEs allowed to be combination wake/run are for button-style 7009devices such as a control-method power button, control-method sleep button, 7010or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are not 7011referenced by any _PRW methods are marked for "runtime" and hardware 7012enabled. Any GPE that is referenced by a _PRW method is marked for "wake" 7013(and disabled at runtime). However, at sleep time, only those GPEs that 7014have been specifically enabled for wake via the AcpiEnableGpe interface will 7015actually be hardware enabled. 7016 7017A new external interface has been added, AcpiSetGpeType(), that is meant to 7018be used by device drivers to force a GPE to a particular type. It will be 7019especially useful for the drivers for the button devices mentioned above. 7020 7021Completed restructuring of the ACPI CA initialization sequence so that 7022default operation region handlers are installed before GPEs are initialized 7023and the _PRW methods are executed. This will prevent errors when the _PRW 7024methods attempt to access system memory or I/O space. 7025 7026GPE enable/disable no longer reads the GPE enable register. We now keep the 7027enable info for runtime and wake separate and in the GPE_EVENT_INFO. We 7028thus no longer depend on the hardware to maintain these bits. 7029 7030Always clear the wake status and fixed/GPE status bits before sleep, even 7031for state S5. 7032 7033Improved the AML debugger output for displaying the GPE blocks and their 7034current status. 7035 7036Added new strings for the _OSI method, of the form "Windows 2001 SPx" where 7037x = 0,1,2,3,4. 7038 7039Fixed a problem where the physical address was incorrectly calculated when 7040the Load() operator was used to directly load from an Operation Region (vs. 7041loading from a Field object.) Also added check for minimum table length for 7042this case. 7043 7044Fix for multiple mutex acquisition. Restore original thread SyncLevel on 7045mutex release. 7046 7047Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for 7048consistency with the other fields returned. 7049 7050Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such 7051structure for each GPE in the system, so the size of this structure is 7052important. 7053 7054CPU stack requirement reduction: Cleaned up the method execution and object 7055evaluation paths so that now a parameter structure is passed, instead of 7056copying the various method parameters over and over again. 7057 7058In evregion.c: Correctly exit and reenter the interpreter region if and 7059only if dispatching an operation region request to a user-installed handler. 7060Do not exit/reenter when dispatching to a default handler (e.g., default 7061system memory or I/O handlers) 7062 7063 7064Notes for updating drivers for the new GPE support. The following changes 7065must be made to ACPI-related device drivers that are attached to one or more 7066GPEs: (This information will be added to the ACPI CA Programmer Reference.) 7067 70681) AcpiInstallGpeHandler no longer automatically enables the GPE, you must 7069explicitly call AcpiEnableGpe. 70702) There is a new interface called AcpiSetGpeType. This should be called 7071before enabling the GPE. Also, this interface will automatically disable 7072the GPE if it is currently enabled. 70733) AcpiEnableGpe no longer supports a GPE type flag. 7074 7075Specific drivers that must be changed: 70761) EC driver: 7077 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED, 7078AeGpeHandler, NULL); 7079 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME); 7080 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR); 7081 70822) Button Drivers (Power, Lid, Sleep): 7083Run _PRW method under parent device 7084If _PRW exists: /* This is a control-method button */ 7085 Extract GPE number and possibly GpeDevice 7086 AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN); 7087 AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR); 7088 7089For all other devices that have _PRWs, we automatically set the GPE type to 7090ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled. This 7091must be done on a selective basis, usually requiring some kind of user app 7092to allow the user to pick the wake devices. 7093 7094 7095Code and Data Size: Current and previous core subsystem library sizes are 7096shown below. These are the code and data sizes for the acpica.lib produced 7097by the Microsoft Visual C++ 6.0 compiler, and these values do not include 7098any ACPI driver or OSPM code. The debug version of the code includes the 7099debug output trace mechanism and has a much larger code and data size. Note 7100that these values will vary depending on the efficiency of the compiler and 7101the compiler options used during generation. 7102 7103 Previous Release: 7104 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 7105 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 7106 Current Release: 7107 7108 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 7109 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 7110 7111 7112 7113---------------------------------------- 711402 April 2004. Summary of changes for version 20040402: 7115 71161) ACPI CA Core Subsystem: 7117 7118Fixed an interpreter problem where an indirect store through an ArgX 7119parameter was incorrectly applying the "implicit conversion rules" during 7120the store. From the ACPI specification: "If the target is a method local or 7121argument (LocalX or ArgX), no conversion is performed and the result is 7122stored directly to the target". The new behavior is to disable implicit 7123conversion during ALL stores to an ArgX. 7124 7125Changed the behavior of the _PRW method scan to ignore any and all errors 7126returned by a given _PRW. This prevents the scan from aborting from the 7127failure of any single _PRW. 7128 7129Moved the runtime configuration parameters from the global init procedure to 7130static variables in acglobal.h. This will allow the host to override the 7131default values easily. 7132 7133Code and Data Size: Current and previous core subsystem library sizes are 7134shown below. These are the code and data sizes for the acpica.lib produced 7135by the Microsoft Visual C++ 6.0 compiler, and these values do not include 7136any ACPI driver or OSPM code. The debug version of the code includes the 7137debug output trace mechanism and has a much larger code and data size. Note 7138that these values will vary depending on the efficiency of the compiler and 7139the compiler options used during generation. 7140 7141 Previous Release: 7142 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 7143 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 7144 Current Release: 7145 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 7146 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 7147 7148 71492) iASL Compiler/Disassembler: 7150 7151iASL now fully disassembles SSDTs. However, External() statements are not 7152generated automatically for unresolved symbols at this time. This is a 7153planned feature for future implementation. 7154 7155Fixed a scoping problem in the disassembler that occurs when the type of the 7156target of a Scope() operator is overridden. This problem caused an 7157incorrectly nested internal namespace to be constructed. 7158 7159Any warnings or errors that are emitted during disassembly are now commented 7160out automatically so that the resulting file can be recompiled without any 7161hand editing. 7162 7163---------------------------------------- 716426 March 2004. Summary of changes for version 20040326: 7165 71661) ACPI CA Core Subsystem: 7167 7168Implemented support for "wake" GPEs via interaction between GPEs and the 7169_PRW methods. Every GPE that is pointed to by one or more _PRWs is 7170identified as a WAKE GPE and by default will no longer be enabled at 7171runtime. Previously, we were blindly enabling all GPEs with a corresponding 7172_Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway. We 7173believe this has been the cause of thousands of "spurious" GPEs on some 7174systems. 7175 7176This new GPE behavior is can be reverted to the original behavior (enable 7177ALL GPEs at runtime) via a runtime flag. 7178 7179Fixed a problem where aliased control methods could not access objects 7180properly. The proper scope within the namespace was not initialized 7181(transferred to the target of the aliased method) before executing the 7182target method. 7183 7184Fixed a potential race condition on internal object deletion on the return 7185object in AcpiEvaluateObject. 7186 7187Integrated a fix for resource descriptors where both _MEM and _MTP were 7188being extracted instead of just _MEM. (i.e. bitmask was incorrectly too 7189wide, 0x0F instead of 0x03.) 7190 7191Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName, preventing a 7192fault in some cases. 7193 7194Updated Notify() values for debug statements in evmisc.c 7195 7196Return proper status from AcpiUtMutexInitialize, not just simply AE_OK. 7197 7198Code and Data Size: Current and previous core subsystem library sizes are 7199shown below. These are the code and data sizes for the acpica.lib produced 7200by the Microsoft Visual C++ 6.0 compiler, and these values do not include 7201any ACPI driver or OSPM code. The debug version of the code includes the 7202debug output trace mechanism and has a much larger code and data size. Note 7203that these values will vary depending on the efficiency of the compiler and 7204the compiler options used during generation. 7205 7206 Previous Release: 7207 7208 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 7209 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 7210 Current Release: 7211 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 7212 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 7213 7214---------------------------------------- 721511 March 2004. Summary of changes for version 20040311: 7216 72171) ACPI CA Core Subsystem: 7218 7219Fixed a problem where errors occurring during the parse phase of control 7220method execution did not abort cleanly. For example, objects created and 7221installed in the namespace were not deleted. This caused all subsequent 7222invocations of the method to return the AE_ALREADY_EXISTS exception. 7223 7224Implemented a mechanism to force a control method to "Serialized" execution 7225if the method attempts to create namespace objects. (The root of the 7226AE_ALREADY_EXISTS problem.) 7227 7228Implemented support for the predefined _OSI "internal" control method. 7229Initial supported strings are "Linux", "Windows 2000", "Windows 2001", and 7230"Windows 2001.1", and can be easily upgraded for new strings as necessary. 7231This feature will allow "other" operating systems to execute the fully 7232tested, "Windows" code path through the ASL code 7233 7234Global Lock Support: Now allows multiple acquires and releases with any 7235internal thread. Removed concept of "owning thread" for this special mutex. 7236 7237Fixed two functions that were inappropriately declaring large objects on the 7238CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage during 7239method execution considerably. 7240 7241Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the 7242S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT. 7243 7244Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs 7245defined on the machine. 7246 7247Implemented two runtime options: One to force all control method execution 7248to "Serialized" to mimic Windows behavior, another to disable _OSI support 7249if it causes problems on a given machine. 7250 7251Code and Data Size: Current and previous core subsystem library sizes are 7252shown below. These are the code and data sizes for the acpica.lib produced 7253by the Microsoft Visual C++ 6.0 compiler, and these values do not include 7254any ACPI driver or OSPM code. The debug version of the code includes the 7255debug output trace mechanism and has a much larger code and data size. Note 7256that these values will vary depending on the efficiency of the compiler and 7257the compiler options used during generation. 7258 7259 Previous Release: 7260 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 7261 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 7262 Current Release: 7263 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 7264 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 7265 72662) iASL Compiler/Disassembler: 7267 7268Fixed an array size problem for FreeBSD that would cause the compiler to 7269fault. 7270 7271---------------------------------------- 727220 February 2004. Summary of changes for version 20040220: 7273 7274 72751) ACPI CA Core Subsystem: 7276 7277Implemented execution of _SxD methods for Device objects in the 7278GetObjectInfo interface. 7279 7280Fixed calls to _SST method to pass the correct arguments. 7281 7282Added a call to _SST on wake to restore to "working" state. 7283 7284Check for End-Of-Buffer failure case in the WalkResources interface. 7285 7286Integrated fix for 64-bit alignment issue in acglobal.h by moving two 7287structures to the beginning of the file. 7288 7289After wake, clear GPE status register(s) before enabling GPEs. 7290 7291After wake, clear/enable power button. (Perhaps we should clear/enable all 7292fixed events upon wake.) 7293 7294Fixed a couple of possible memory leaks in the Namespace manager. 7295 7296Integrated latest acnetbsd.h file. 7297 7298---------------------------------------- 729911 February 2004. Summary of changes for version 20040211: 7300 7301 73021) ACPI CA Core Subsystem: 7303 7304Completed investigation and implementation of the call-by-reference 7305mechanism for control method arguments. 7306 7307Fixed a problem where a store of an object into an indexed package could 7308fail if the store occurs within a different method than the method that 7309created the package. 7310 7311Fixed a problem where the ToDecimal operator could return incorrect results. 7312 7313Fixed a problem where the CopyObject operator could fail on some of the more 7314obscure objects (e.g., Reference objects.) 7315 7316Improved the output of the Debug object to display buffer, package, and 7317index objects. 7318 7319Fixed a problem where constructs of the form "RefOf (ArgX)" did not return 7320the expected result. 7321 7322Added permanent ACPI_REPORT_ERROR macros for all instances of the 7323ACPI_AML_INTERNAL exception. 7324 7325Integrated latest version of acfreebsd.h 7326 7327---------------------------------------- 732816 January 2004. Summary of changes for version 20040116: 7329 7330The purpose of this release is primarily to update the copyright years in 7331each module, thus causing a huge number of diffs. There are a few small 7332functional changes, however. 7333 73341) ACPI CA Core Subsystem: 7335 7336Improved error messages when there is a problem finding one or more of the 7337required base ACPI tables 7338 7339Reintroduced the definition of APIC_HEADER in actbl.h 7340 7341Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h) 7342 7343Removed extraneous reference to NewObj in dsmthdat.c 7344 73452) iASL compiler 7346 7347Fixed a problem introduced in December that disabled the correct disassembly 7348of Resource Templates 7349 7350 7351---------------------------------------- 735203 December 2003. Summary of changes for version 20031203: 7353 73541) ACPI CA Core Subsystem: 7355 7356Changed the initialization of Operation Regions during subsystem 7357init to perform two entire walks of the ACPI namespace; The first 7358to initialize the regions themselves, the second to execute the 7359_REG methods. This fixed some interdependencies across _REG 7360methods found on some machines. 7361 7362Fixed a problem where a Store(Local0, Local1) could simply update 7363the object reference count, and not create a new copy of the 7364object if the Local1 is uninitialized. 7365 7366Implemented support for the _SST reserved method during sleep 7367transitions. 7368 7369Implemented support to clear the SLP_TYP and SLP_EN bits when 7370waking up, this is apparently required by some machines. 7371 7372When sleeping, clear the wake status only if SleepState is not S5. 7373 7374Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect 7375pointer arithmetic advanced a string pointer too far. 7376 7377Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer 7378could be returned if the requested table has not been loaded. 7379 7380Within the support for IRQ resources, restructured the handling of 7381the active and edge/level bits. 7382 7383Fixed a few problems in AcpiPsxExecute() where memory could be 7384leaked under certain error conditions. 7385 7386Improved error messages for the cases where the ACPI mode could 7387not be entered. 7388 7389Code and Data Size: Current and previous core subsystem library 7390sizes are shown below. These are the code and data sizes for the 7391acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 7392these values do not include any ACPI driver or OSPM code. The 7393debug version of the code includes the debug output trace 7394mechanism and has a much larger code and data size. Note that 7395these values will vary depending on the efficiency of the compiler 7396and the compiler options used during generation. 7397 7398 Previous Release (20031029): 7399 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 7400 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 7401 Current Release: 7402 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 7403 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 7404 74052) iASL Compiler/Disassembler: 7406 7407Implemented a fix for the iASL disassembler where a bad index was 7408generated. This was most noticeable on 64-bit platforms 7409 7410 7411---------------------------------------- 741229 October 2003. Summary of changes for version 20031029: 7413 74141) ACPI CA Core Subsystem: 7415 7416 7417Fixed a problem where a level-triggered GPE with an associated 7418_Lxx control method was incorrectly cleared twice. 7419 7420Fixed a problem with the Field support code where an access can 7421occur beyond the end-of-region if the field is non-aligned but 7422extends to the very end of the parent region (resulted in an 7423AE_AML_REGION_LIMIT exception.) 7424 7425Fixed a problem with ACPI Fixed Events where an RT Clock handler 7426would not get invoked on an RTC event. The RTC event bitmasks for 7427the PM1 registers were not being initialized properly. 7428 7429Implemented support for executing _STA and _INI methods for 7430Processor objects. Although this is currently not part of the 7431ACPI specification, there is existing ASL code that depends on the 7432init-time execution of these methods. 7433 7434Implemented and deployed a GetDescriptorName function to decode 7435the various types of internal descriptors. Guards against null 7436descriptors during debug output also. 7437 7438Implemented and deployed a GetNodeName function to extract the 4- 7439character namespace node name. This function simplifies the debug 7440and error output, as well as guarding against null pointers during 7441output. 7442 7443Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to 7444simplify the debug and error output of 64-bit integers. This 7445macro replaces the HIDWORD and LODWORD macros for dumping these 7446integers. 7447 7448Updated the implementation of the Stall() operator to only call 7449AcpiOsStall(), and also return an error if the operand is larger 7450than 255. This preserves the required behavior of not 7451relinquishing the processor, as would happen if AcpiOsSleep() was 7452called for "long stalls". 7453 7454Constructs of the form "Store(LocalX,LocalX)" where LocalX is not 7455initialized are now treated as NOOPs. 7456 7457Cleaned up a handful of warnings during 64-bit generation. 7458 7459Fixed a reported error where and incorrect GPE number was passed 7460to the GPE dispatch handler. This value is only used for error 7461output, however. Used this opportunity to clean up and streamline 7462the GPE dispatch code. 7463 7464Code and Data Size: Current and previous core subsystem library 7465sizes are shown below. These are the code and data sizes for the 7466acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 7467these values do not include any ACPI driver or OSPM code. The 7468 7469debug version of the code includes the debug output trace 7470mechanism and has a much larger code and data size. Note that 7471these values will vary depending on the efficiency of the compiler 7472and the compiler options used during generation. 7473 7474 Previous Release (20031002): 7475 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 7476 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 7477 Current Release: 7478 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 7479 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 7480 7481 74822) iASL Compiler/Disassembler: 7483 7484Updated the iASL compiler to return an error if the operand to the 7485Stall() operator is larger than 255. 7486 7487 7488---------------------------------------- 748902 October 2003. Summary of changes for version 20031002: 7490 7491 74921) ACPI CA Core Subsystem: 7493 7494Fixed a problem with Index Fields where the index was not 7495incremented for fields that require multiple writes to the 7496index/data registers (Fields that are wider than the data 7497register.) 7498 7499Fixed a problem with all Field objects where a write could go 7500beyond the end-of-field if the field was larger than the access 7501granularity and therefore required multiple writes to complete the 7502request. An extra write beyond the end of the field could happen 7503inadvertently. 7504 7505Fixed a problem with Index Fields where a BUFFER_OVERFLOW error 7506would incorrectly be returned if the width of the Data Register 7507was larger than the specified field access width. 7508 7509Completed fixes for LoadTable() and Unload() and verified their 7510operation. Implemented full support for the "DdbHandle" object 7511throughout the ACPI CA subsystem. 7512 7513Implemented full support for the MADT and ECDT tables in the ACPI 7514CA header files. Even though these tables are not directly 7515consumed by ACPI CA, the header definitions are useful for ACPI 7516device drivers. 7517 7518Integrated resource descriptor fixes posted to the Linux ACPI 7519list. This included checks for minimum descriptor length, and 7520support for trailing NULL strings within descriptors that have 7521optional string elements. 7522 7523Code and Data Size: Current and previous core subsystem library 7524sizes are shown below. These are the code and data sizes for the 7525acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 7526these values do not include any ACPI driver or OSPM code. The 7527debug version of the code includes the debug output trace 7528mechanism and has a much larger code and data size. Note that 7529these values will vary depending on the efficiency of the compiler 7530and the compiler options used during generation. 7531 7532 Previous Release (20030918): 7533 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 7534 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 7535 Current Release: 7536 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 7537 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 7538 7539 75402) iASL Compiler: 7541 7542Implemented detection of non-ASCII characters within the input 7543source ASL file. This catches attempts to compile binary (AML) 7544files early in the compile, with an informative error message. 7545 7546Fixed a problem where the disassembler would fault if the output 7547filename could not be generated or if the output file could not be 7548opened. 7549 7550---------------------------------------- 755118 September 2003. Summary of changes for version 20030918: 7552 7553 75541) ACPI CA Core Subsystem: 7555 7556Found and fixed a longstanding problem with the late execution of 7557the various deferred AML opcodes (such as Operation Regions, 7558Buffer Fields, Buffers, and Packages). If the name string 7559specified for the name of the new object placed the object in a 7560scope other than the current scope, the initialization/execution 7561of the opcode failed. The solution to this problem was to 7562implement a mechanism where the late execution of such opcodes 7563does not attempt to lookup/create the name a second time in an 7564incorrect scope. This fixes the "region size computed 7565incorrectly" problem. 7566 7567Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a 7568Global Lock AE_BAD_PARAMETER error. 7569 7570Fixed several 64-bit issues with prototypes, casting and data 7571types. 7572 7573Removed duplicate prototype from acdisasm.h 7574 7575Fixed an issue involving EC Operation Region Detach (Shaohua Li) 7576 7577Code and Data Size: Current and previous core subsystem library 7578sizes are shown below. These are the code and data sizes for the 7579acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 7580these values do not include any ACPI driver or OSPM code. The 7581debug version of the code includes the debug output trace 7582mechanism and has a much larger code and data size. Note that 7583these values will vary depending on the efficiency of the compiler 7584and the compiler options used during generation. 7585 7586 Previous Release: 7587 7588 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 7589 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 7590 Current Release: 7591 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 7592 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 7593 7594 75952) Linux: 7596 7597Fixed the AcpiOsSleep implementation in osunixxf.c to pass the 7598correct sleep time in seconds. 7599 7600---------------------------------------- 760114 July 2003. Summary of changes for version 20030619: 7602 76031) ACPI CA Core Subsystem: 7604 7605Parse SSDTs in order discovered, as opposed to reverse order 7606(Hrvoje Habjanic) 7607 7608Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas 7609Klausner, 7610 Nate Lawson) 7611 7612 76132) Linux: 7614 7615Dynamically allocate SDT list (suggested by Andi Kleen) 7616 7617proc function return value cleanups (Andi Kleen) 7618 7619Correctly handle NMI watchdog during long stalls (Andrew Morton) 7620 7621Make it so acpismp=force works (reported by Andrew Morton) 7622 7623 7624---------------------------------------- 762519 June 2003. Summary of changes for version 20030619: 7626 76271) ACPI CA Core Subsystem: 7628 7629Fix To/FromBCD, eliminating the need for an arch-specific #define. 7630 7631Do not acquire a semaphore in the S5 shutdown path. 7632 7633Fix ex_digits_needed for 0. (Takayoshi Kochi) 7634 7635Fix sleep/stall code reversal. (Andi Kleen) 7636 7637Revert a change having to do with control method calling 7638semantics. 7639 76402) Linux: 7641 7642acpiphp update (Takayoshi Kochi) 7643 7644Export acpi_disabled for sonypi (Stelian Pop) 7645 7646Mention acpismp=force in config help 7647 7648Re-add acpitable.c and acpismp=force. This improves backwards 7649 7650compatibility and also cleans up the code to a significant degree. 7651 7652Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge) 7653 7654---------------------------------------- 765522 May 2003. Summary of changes for version 20030522: 7656 76571) ACPI CA Core Subsystem: 7658 7659Found and fixed a reported problem where an AE_NOT_FOUND error 7660occurred occasionally during _BST evaluation. This turned out to 7661be an Owner ID allocation issue where a called method did not get 7662a new ID assigned to it. Eventually, (after 64k calls), the Owner 7663ID UINT16 would wraparound so that the ID would be the same as the 7664caller's and the called method would delete the caller's 7665namespace. 7666 7667Implemented extended error reporting for control methods that are 7668aborted due to a run-time exception. Output includes the exact 7669AML instruction that caused the method abort, a dump of the method 7670locals and arguments at the time of the abort, and a trace of all 7671nested control method calls. 7672 7673Modified the interpreter to allow the creation of buffers of zero 7674length from the AML code. Implemented new code to ensure that no 7675attempt is made to actually allocate a memory buffer (of length 7676zero) - instead, a simple buffer object with a NULL buffer pointer 7677and length zero is created. A warning is no longer issued when 7678the AML attempts to create a zero-length buffer. 7679 7680Implemented a workaround for the "leading asterisk issue" in 7681_HIDs, _UIDs, and _CIDs in the AML interpreter. One leading 7682asterisk is automatically removed if present in any HID, UID, or 7683CID strings. The iASL compiler will still flag this asterisk as 7684an error, however. 7685 7686Implemented full support for _CID methods that return a package of 7687multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface 7688now additionally returns a device _CID list if present. This 7689required a change to the external interface in order to pass an 7690ACPI_BUFFER object as a parameter since the _CID list is of 7691variable length. 7692 7693Fixed a problem with the new AE_SAME_HANDLER exception where 7694handler initialization code did not know about this exception. 7695 7696Code and Data Size: Current and previous core subsystem library 7697sizes are shown below. These are the code and data sizes for the 7698acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 7699these values do not include any ACPI driver or OSPM code. The 7700debug version of the code includes the debug output trace 7701mechanism and has a much larger code and data size. Note that 7702these values will vary depending on the efficiency of the compiler 7703and the compiler options used during generation. 7704 7705 Previous Release (20030509): 7706 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 7707 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 7708 Current Release: 7709 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 7710 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 7711 7712 77132) Linux: 7714 7715Fixed a bug in which we would reinitialize the ACPI interrupt 7716after it was already working, thus disabling all ACPI and the IRQs 7717for any other device sharing the interrupt. (Thanks to Stian 7718Jordet) 7719 7720Toshiba driver update (John Belmonte) 7721 7722Return only 0 or 1 for our interrupt handler status (Andrew 7723Morton) 7724 7725 77263) iASL Compiler: 7727 7728Fixed a reported problem where multiple (nested) ElseIf() 7729statements were not handled correctly by the compiler, resulting 7730in incorrect warnings and incorrect AML code. This was a problem 7731in both the ASL parser and the code generator. 7732 7733 77344) Documentation: 7735 7736Added changes to existing interfaces, new exception codes, and new 7737text concerning reference count object management versus garbage 7738collection. 7739 7740---------------------------------------- 774109 May 2003. Summary of changes for version 20030509. 7742 7743 77441) ACPI CA Core Subsystem: 7745 7746Changed the subsystem initialization sequence to hold off 7747installation of address space handlers until the hardware has been 7748initialized and the system has entered ACPI mode. This is because 7749the installation of space handlers can cause _REG methods to be 7750run. Previously, the _REG methods could potentially be run before 7751ACPI mode was enabled. 7752 7753Fixed some memory leak issues related to address space handler and 7754notify handler installation. There were some problems with the 7755reference count mechanism caused by the fact that the handler 7756objects are shared across several namespace objects. 7757 7758Fixed a reported problem where reference counts within the 7759namespace were not properly updated when named objects created by 7760method execution were deleted. 7761 7762Fixed a reported problem where multiple SSDTs caused a deletion 7763issue during subsystem termination. Restructured the table data 7764structures to simplify the linked lists and the related code. 7765 7766Fixed a problem where the table ID associated with secondary 7767tables (SSDTs) was not being propagated into the namespace objects 7768created by those tables. This would only present a problem for 7769tables that are unloaded at run-time, however. 7770 7771Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE 7772type as the length parameter (instead of UINT32). 7773 7774Solved a long-standing problem where an ALREADY_EXISTS error 7775appears on various systems. This problem could happen when there 7776are multiple PCI_Config operation regions under a single PCI root 7777bus. This doesn't happen very frequently, but there are some 7778systems that do this in the ASL. 7779 7780Fixed a reported problem where the internal DeleteNode function 7781was incorrectly handling the case where a namespace node was the 7782first in the parent's child list, and had additional peers (not 7783the only child, but first in the list of children.) 7784 7785Code and Data Size: Current core subsystem library sizes are shown 7786below. These are the code and data sizes for the acpica.lib 7787produced by the Microsoft Visual C++ 6.0 compiler, and these 7788values do not include any ACPI driver or OSPM code. The debug 7789version of the code includes the debug output trace mechanism and 7790has a much larger code and data size. Note that these values will 7791vary depending on the efficiency of the compiler and the compiler 7792options used during generation. 7793 7794 Previous Release 7795 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 7796 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 7797 Current Release: 7798 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 7799 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 7800 7801 78022) Linux: 7803 7804Allow ":" in OS override string (Ducrot Bruno) 7805 7806Kobject fix (Greg KH) 7807 7808 78093 iASL Compiler/Disassembler: 7810 7811Fixed a problem in the generation of the C source code files (AML 7812is emitted in C source statements for BIOS inclusion) where the 7813Ascii dump that appears within a C comment at the end of each line 7814could cause a compile time error if the AML sequence happens to 7815have an open comment or close comment sequence embedded. 7816 7817 7818---------------------------------------- 781924 April 2003. Summary of changes for version 20030424. 7820 7821 78221) ACPI CA Core Subsystem: 7823 7824Support for big-endian systems has been implemented. Most of the 7825support has been invisibly added behind big-endian versions of the 7826ACPI_MOVE_* macros. 7827 7828Fixed a problem in AcpiHwDisableGpeBlock() and 7829AcpiHwClearGpeBlock() where an incorrect offset was passed to the 7830low level hardware write routine. The offset parameter was 7831actually eliminated from the low level read/write routines because 7832they had become obsolete. 7833 7834Fixed a problem where a handler object was deleted twice during 7835the removal of a fixed event handler. 7836 7837 78382) Linux: 7839 7840A fix for SMP systems with link devices was contributed by 7841 7842Compaq's Dan Zink. 7843 7844(2.5) Return whether we handled the interrupt in our IRQ handler. 7845(Linux ISRs no longer return void, so we can propagate the handler 7846return value from the ACPI CA core back to the OS.) 7847 7848 7849 78503) Documentation: 7851 7852The ACPI CA Programmer Reference has been updated to reflect new 7853interfaces and changes to existing interfaces. 7854 7855---------------------------------------- 785628 March 2003. Summary of changes for version 20030328. 7857 78581) ACPI CA Core Subsystem: 7859 7860The GPE Block Device support has been completed. New interfaces 7861are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event 7862interfaces (enable, disable, clear, getstatus) have been split 7863into separate interfaces for Fixed Events and General Purpose 7864Events (GPEs) in order to support GPE Block Devices properly. 7865 7866Fixed a problem where the error message "Failed to acquire 7867semaphore" would appear during operations on the embedded 7868controller (EC). 7869 7870Code and Data Size: Current core subsystem library sizes are shown 7871below. These are the code and data sizes for the acpica.lib 7872produced by the Microsoft Visual C++ 6.0 compiler, and these 7873values do not include any ACPI driver or OSPM code. The debug 7874version of the code includes the debug output trace mechanism and 7875has a much larger code and data size. Note that these values will 7876vary depending on the efficiency of the compiler and the compiler 7877options used during generation. 7878 7879 Previous Release 7880 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 7881 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 7882 Current Release: 7883 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 7884 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 7885 7886 7887---------------------------------------- 788828 February 2003. Summary of changes for version 20030228. 7889 7890 78911) ACPI CA Core Subsystem: 7892 7893The GPE handling and dispatch code has been completely overhauled 7894in preparation for support of GPE Block Devices (ID ACPI0006). 7895This affects internal data structures and code only; there should 7896be no differences visible externally. One new file has been 7897added, evgpeblk.c 7898 7899The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only 7900fields that are used to determine the GPE block lengths. The 7901REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address 7902structures are ignored. This is per the ACPI specification but it 7903isn't very clear. The full 256 Block 0/1 GPEs are now supported 7904(the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128). 7905 7906In the SCI interrupt handler, removed the read of the PM1_CONTROL 7907register to look at the SCI_EN bit. On some machines, this read 7908causes an SMI event and greatly slows down SCI events. (This may 7909in fact be the cause of slow battery status response on some 7910systems.) 7911 7912Fixed a problem where a store of a NULL string to a package object 7913could cause the premature deletion of the object. This was seen 7914during execution of the battery _BIF method on some systems, 7915resulting in no battery data being returned. 7916 7917Added AcpiWalkResources interface to simplify parsing of resource 7918lists. 7919 7920Code and Data Size: Current core subsystem library sizes are shown 7921below. These are the code and data sizes for the acpica.lib 7922produced by the Microsoft Visual C++ 6.0 compiler, and these 7923values do not include any ACPI driver or OSPM code. The debug 7924version of the code includes the debug output trace mechanism and 7925has a much larger code and data size. Note that these values will 7926vary depending on the efficiency of the compiler and the compiler 7927options used during generation. 7928 7929 Previous Release 7930 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 7931 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 7932 Current Release: 7933 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 7934 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 7935 7936 79372) Linux 7938 7939S3 fixes (Ole Rohne) 7940 7941Update ACPI PHP driver with to use new acpi_walk_resource API 7942(Bjorn Helgaas) 7943 7944Add S4BIOS support (Pavel Machek) 7945 7946Map in entire table before performing checksum (John Stultz) 7947 7948Expand the mem= cmdline to allow the specification of reserved and 7949ACPI DATA blocks (Pavel Machek) 7950 7951Never use ACPI on VISWS 7952 7953Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez) 7954 7955Revert a change that allowed P_BLK lengths to be 4 or 5. This is 7956causing us to think that some systems support C2 when they really 7957don't. 7958 7959Do not count processor objects for non-present CPUs (Thanks to 7960Dominik Brodowski) 7961 7962 79633) iASL Compiler: 7964 7965Fixed a problem where ASL include files could not be found and 7966opened. 7967 7968Added support for the _PDC reserved name. 7969 7970 7971---------------------------------------- 797222 January 2003. Summary of changes for version 20030122. 7973 7974 79751) ACPI CA Core Subsystem: 7976 7977Added a check for constructs of the form: Store (Local0, Local0) 7978where Local0 is not initialized. Apparently, some BIOS 7979programmers believe that this is a NOOP. Since this store doesn't 7980do anything anyway, the new prototype behavior will ignore this 7981error. This is a case where we can relax the strict checking in 7982the interpreter in the name of compatibility. 7983 7984 79852) Linux 7986 7987The AcpiSrc Source Conversion Utility has been released with the 7988Linux package for the first time. This is the utility that is 7989used to convert the ACPI CA base source code to the Linux version. 7990 7991(Both) Handle P_BLK lengths shorter than 6 more gracefully 7992 7993(Both) Move more headers to include/acpi, and delete an unused 7994header. 7995 7996(Both) Move drivers/acpi/include directory to include/acpi 7997 7998(Both) Boot functions don't use cmdline, so don't pass it around 7999 8000(Both) Remove include of unused header (Adrian Bunk) 8001 8002(Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since 8003the 8004former now also includes the latter, acpiphp.h only needs the one, 8005now. 8006 8007(2.5) Make it possible to select method of bios restoring after S3 8008resume. [=> no more ugly ifdefs] (Pavel Machek) 8009 8010(2.5) Make proc write interfaces work (Pavel Machek) 8011 8012(2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski) 8013 8014(2.5) Break out ACPI Perf code into its own module, under cpufreq 8015(Dominik Brodowski) 8016 8017(2.4) S4BIOS support (Ducrot Bruno) 8018 8019(2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio 8020Visinoni) 8021 8022 80233) iASL Compiler: 8024 8025Added support to disassemble SSDT and PSDTs. 8026 8027Implemented support to obtain SSDTs from the Windows registry if 8028available. 8029 8030 8031---------------------------------------- 803209 January 2003. Summary of changes for version 20030109. 8033 80341) ACPI CA Core Subsystem: 8035 8036Changed the behavior of the internal Buffer-to-String conversion 8037function. The current ACPI specification states that the contents 8038of the buffer are "converted to a string of two-character 8039hexadecimal numbers, each separated by a space". Unfortunately, 8040this definition is not backwards compatible with existing ACPI 1.0 8041implementations (although the behavior was not defined in the ACPI 80421.0 specification). The new behavior simply copies data from the 8043buffer to the string until a null character is found or the end of 8044the buffer is reached. The new String object is always null 8045terminated. This problem was seen during the generation of _BIF 8046battery data where incorrect strings were returned for battery 8047type, etc. This will also require an errata to the ACPI 8048specification. 8049 8050Renamed all instances of NATIVE_UINT and NATIVE_INT to 8051ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively. 8052 8053Copyright in all module headers (both Linux and non-Linux) has be 8054updated to 2003. 8055 8056Code and Data Size: Current core subsystem library sizes are shown 8057below. These are the code and data sizes for the acpica.lib 8058produced by the Microsoft Visual C++ 6.0 compiler, and these 8059values do not include any ACPI driver or OSPM code. The debug 8060version of the code includes the debug output trace mechanism and 8061has a much larger code and data size. Note that these values will 8062vary depending on the efficiency of the compiler and the compiler 8063options used during generation. 8064 8065 Previous Release 8066 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 8067 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 8068 Current Release: 8069 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 8070 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 8071 8072 80732) Linux 8074 8075Fixed an oops on module insertion/removal (Matthew Tippett) 8076 8077(2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante) 8078 8079(2.5) Replace pr_debug (Randy Dunlap) 8080 8081(2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski) 8082 8083(Both) Eliminate spawning of thread from timer callback, in favor 8084of schedule_work() 8085 8086(Both) Show Lid status in /proc (Zdenek OGAR Skalak) 8087 8088(Both) Added define for Fixed Function HW region (Matthew Wilcox) 8089 8090(Both) Add missing statics to button.c (Pavel Machek) 8091 8092Several changes have been made to the source code translation 8093utility that generates the Linux Code in order to make the code 8094more "Linux-like": 8095 8096All typedefs on structs and unions have been removed in keeping 8097with the Linux coding style. 8098 8099Removed the non-Linux SourceSafe module revision number from each 8100module header. 8101 8102Completed major overhaul of symbols to be lowercased for linux. 8103Doubled the number of symbols that are lowercased. 8104 8105Fixed a problem where identifiers within procedure headers and 8106within quotes were not fully lower cased (they were left with a 8107starting capital.) 8108 8109Some C macros whose only purpose is to allow the generation of 16- 8110bit code are now completely removed in the Linux code, increasing 8111readability and maintainability. 8112 8113---------------------------------------- 8114 811512 December 2002. Summary of changes for version 20021212. 8116 8117 81181) ACPI CA Core Subsystem: 8119 8120Fixed a problem where the creation of a zero-length AML Buffer 8121would cause a fault. 8122 8123Fixed a problem where a Buffer object that pointed to a static AML 8124buffer (in an ACPI table) could inadvertently be deleted, causing 8125memory corruption. 8126 8127Fixed a problem where a user buffer (passed in to the external 8128ACPI CA interfaces) could be overwritten if the buffer was too 8129small to complete the operation, causing memory corruption. 8130 8131Fixed a problem in the Buffer-to-String conversion code where a 8132string of length one was always returned, regardless of the size 8133of the input Buffer object. 8134 8135Removed the NATIVE_CHAR data type across the entire source due to 8136lack of need and lack of consistent use. 8137 8138Code and Data Size: Current core subsystem library sizes are shown 8139below. These are the code and data sizes for the acpica.lib 8140produced by the Microsoft Visual C++ 6.0 compiler, and these 8141values do not include any ACPI driver or OSPM code. The debug 8142version of the code includes the debug output trace mechanism and 8143has a much larger code and data size. Note that these values will 8144vary depending on the efficiency of the compiler and the compiler 8145options used during generation. 8146 8147 Previous Release 8148 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 8149 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 8150 Current Release: 8151 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 8152 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 8153 8154 8155---------------------------------------- 815605 December 2002. Summary of changes for version 20021205. 8157 81581) ACPI CA Core Subsystem: 8159 8160Fixed a problem where a store to a String or Buffer object could 8161cause corruption of the DSDT if the object type being stored was 8162the same as the target object type and the length of the object 8163being stored was equal to or smaller than the original (existing) 8164target object. This was seen to cause corruption of battery _BIF 8165buffers if the _BIF method modified the buffer on the fly. 8166 8167Fixed a problem where an internal error was generated if a control 8168method invocation was used in an OperationRegion, Buffer, or 8169Package declaration. This was caused by the deferred parsing of 8170the control method and thus the deferred creation of the internal 8171method object. The solution to this problem was to create the 8172internal method object at the moment the method is encountered in 8173the first pass - so that subsequent references to the method will 8174able to obtain the required parameter count and thus properly 8175parse the method invocation. This problem presented itself as an 8176AE_AML_INTERNAL during the pass 1 parse phase during table load. 8177 8178Fixed a problem where the internal String object copy routine did 8179not always allocate sufficient memory for the target String object 8180and caused memory corruption. This problem was seen to cause 8181"Allocation already present in list!" errors as memory allocation 8182became corrupted. 8183 8184Implemented a new function for the evaluation of namespace objects 8185that allows the specification of the allowable return object 8186types. This simplifies a lot of code that checks for a return 8187object of one or more specific objects returned from the 8188evaluation (such as _STA, etc.) This may become and external 8189function if it would be useful to ACPI-related drivers. 8190 8191Completed another round of prefixing #defines with "ACPI_" for 8192clarity. 8193 8194Completed additional code restructuring to allow more modular 8195linking for iASL compiler and AcpiExec. Several files were split 8196creating new files. New files: nsparse.c dsinit.c evgpe.c 8197 8198Implemented an abort mechanism to terminate an executing control 8199method via the AML debugger. This feature is useful for debugging 8200control methods that depend (wait) for specific hardware 8201responses. 8202 8203Code and Data Size: Current core subsystem library sizes are shown 8204below. These are the code and data sizes for the acpica.lib 8205produced by the Microsoft Visual C++ 6.0 compiler, and these 8206values do not include any ACPI driver or OSPM code. The debug 8207version of the code includes the debug output trace mechanism and 8208has a much larger code and data size. Note that these values will 8209vary depending on the efficiency of the compiler and the compiler 8210options used during generation. 8211 8212 Previous Release 8213 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 8214 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 8215 Current Release: 8216 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 8217 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 8218 8219 82202) iASL Compiler/Disassembler 8221 8222Fixed a compiler code generation problem for "Interrupt" Resource 8223Descriptors. If specified in the ASL, the optional "Resource 8224Source Index" and "Resource Source" fields were not inserted into 8225the correct location within the AML resource descriptor, creating 8226an invalid descriptor. 8227 8228Fixed a disassembler problem for "Interrupt" resource descriptors. 8229The optional "Resource Source Index" and "Resource Source" fields 8230were ignored. 8231 8232 8233---------------------------------------- 823422 November 2002. Summary of changes for version 20021122. 8235 8236 82371) ACPI CA Core Subsystem: 8238 8239Fixed a reported problem where an object stored to a Method Local 8240or Arg was not copied to a new object during the store - the 8241object pointer was simply copied to the Local/Arg. This caused 8242all subsequent operations on the Local/Arg to also affect the 8243original source of the store operation. 8244 8245Fixed a problem where a store operation to a Method Local or Arg 8246was not completed properly if the Local/Arg contained a reference 8247(from RefOf) to a named field. The general-purpose store-to- 8248namespace-node code is now used so that this case is handled 8249automatically. 8250 8251Fixed a problem where the internal object copy routine would cause 8252a protection fault if the object being copied was a Package and 8253contained either 1) a NULL package element or 2) a nested sub- 8254package. 8255 8256Fixed a problem with the GPE initialization that resulted from an 8257ambiguity in the ACPI specification. One section of the 8258specification states that both the address and length of the GPE 8259block must be zero if the block is not supported. Another section 8260implies that only the address need be zero if the block is not 8261supported. The code has been changed so that both the address and 8262the length must be non-zero to indicate a valid GPE block (i.e., 8263if either the address or the length is zero, the GPE block is 8264invalid.) 8265 8266Code and Data Size: Current core subsystem library sizes are shown 8267below. These are the code and data sizes for the acpica.lib 8268produced by the Microsoft Visual C++ 6.0 compiler, and these 8269values do not include any ACPI driver or OSPM code. The debug 8270version of the code includes the debug output trace mechanism and 8271has a much larger code and data size. Note that these values will 8272vary depending on the efficiency of the compiler and the compiler 8273options used during generation. 8274 8275 Previous Release 8276 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 8277 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 8278 Current Release: 8279 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 8280 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 8281 8282 82832) Linux 8284 8285Cleaned up EC driver. Exported an external EC read/write 8286interface. By going through this, other drivers (most notably 8287sonypi) will be able to serialize access to the EC. 8288 8289 82903) iASL Compiler/Disassembler 8291 8292Implemented support to optionally generate include files for both 8293ASM and C (the -i switch). This simplifies BIOS development by 8294automatically creating include files that contain external 8295declarations for the symbols that are created within the 8296 8297(optionally generated) ASM and C AML source files. 8298 8299 8300---------------------------------------- 830115 November 2002. Summary of changes for version 20021115. 8302 83031) ACPI CA Core Subsystem: 8304 8305Fixed a memory leak problem where an error during resolution of 8306 8307method arguments during a method invocation from another method 8308failed to cleanup properly by deleting all successfully resolved 8309argument objects. 8310 8311Fixed a problem where the target of the Index() operator was not 8312correctly constructed if the source object was a package. This 8313problem has not been detected because the use of a target operand 8314with Index() is very rare. 8315 8316Fixed a problem with the Index() operator where an attempt was 8317made to delete the operand objects twice. 8318 8319Fixed a problem where an attempt was made to delete an operand 8320twice during execution of the CondRefOf() operator if the target 8321did not exist. 8322 8323Implemented the first of perhaps several internal create object 8324functions that create and initialize a specific object type. This 8325consolidates duplicated code wherever the object is created, thus 8326shrinking the size of the subsystem. 8327 8328Implemented improved debug/error messages for errors that occur 8329during nested method invocations. All executing method pathnames 8330are displayed (with the error) as the call stack is unwound - thus 8331simplifying debug. 8332 8333Fixed a problem introduced in the 10/02 release that caused 8334premature deletion of a buffer object if a buffer was used as an 8335ASL operand where an integer operand is required (Thus causing an 8336implicit object conversion from Buffer to Integer.) The change in 8337the 10/02 release was attempting to fix a memory leak (albeit 8338incorrectly.) 8339 8340Code and Data Size: Current core subsystem library sizes are shown 8341below. These are the code and data sizes for the acpica.lib 8342produced by the Microsoft Visual C++ 6.0 compiler, and these 8343values do not include any ACPI driver or OSPM code. The debug 8344version of the code includes the debug output trace mechanism and 8345has a much larger code and data size. Note that these values will 8346vary depending on the efficiency of the compiler and the compiler 8347options used during generation. 8348 8349 Previous Release 8350 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 8351 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 8352 Current Release: 8353 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 8354 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 8355 8356 83572) Linux 8358 8359Changed the implementation of the ACPI semaphores to use down() 8360instead of down_interruptable(). It is important that the 8361execution of ACPI control methods not be interrupted by signals. 8362Methods must run to completion, or the system may be left in an 8363unknown/unstable state. 8364 8365Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set. 8366(Shawn Starr) 8367 8368 83693) iASL Compiler/Disassembler 8370 8371 8372Changed the default location of output files. All output files 8373are now placed in the current directory by default instead of in 8374the directory of the source file. This change may affect some 8375existing makefiles, but it brings the behavior of the compiler in 8376line with other similar tools. The location of the output files 8377can be overridden with the -p command line switch. 8378 8379 8380---------------------------------------- 838111 November 2002. Summary of changes for version 20021111. 8382 8383 83840) ACPI Specification 2.0B is released and is now available at: 8385http://www.acpi.info/index.html 8386 8387 83881) ACPI CA Core Subsystem: 8389 8390Implemented support for the ACPI 2.0 SMBus Operation Regions. 8391This includes the early detection and handoff of the request to 8392the SMBus region handler (avoiding all of the complex field 8393support code), and support for the bidirectional return packet 8394from an SMBus write operation. This paves the way for the 8395development of SMBus drivers in each host operating system. 8396 8397Fixed a problem where the semaphore WAIT_FOREVER constant was 8398defined as 32 bits, but must be 16 bits according to the ACPI 8399specification. This had the side effect of causing ASL 8400Mutex/Event timeouts even though the ASL code requested a wait 8401forever. Changed all internal references to the ACPI timeout 8402parameter to 16 bits to prevent future problems. Changed the name 8403of WAIT_FOREVER to ACPI_WAIT_FOREVER. 8404 8405Code and Data Size: Current core subsystem library sizes are shown 8406below. These are the code and data sizes for the acpica.lib 8407produced by the Microsoft Visual C++ 6.0 compiler, and these 8408values do not include any ACPI driver or OSPM code. The debug 8409version of the code includes the debug output trace mechanism and 8410has a much larger code and data size. Note that these values will 8411vary depending on the efficiency of the compiler and the compiler 8412options used during generation. 8413 8414 Previous Release 8415 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 8416 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 8417 Current Release: 8418 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 8419 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 8420 8421 84222) Linux 8423 8424Module loading/unloading fixes (John Cagle) 8425 8426 84273) iASL Compiler/Disassembler 8428 8429Added support for the SMBBlockProcessCall keyword (ACPI 2.0) 8430 8431Implemented support for the disassembly of all SMBus protocol 8432keywords (SMBQuick, SMBWord, etc.) 8433 8434---------------------------------------- 843501 November 2002. Summary of changes for version 20021101. 8436 8437 84381) ACPI CA Core Subsystem: 8439 8440Fixed a problem where platforms that have a GPE1 block but no GPE0 8441block were not handled correctly. This resulted in a "GPE 8442overlap" error message. GPE0 is no longer required. 8443 8444Removed code added in the previous release that inserted nodes 8445into the namespace in alphabetical order. This caused some side- 8446effects on various machines. The root cause of the problem is 8447still under investigation since in theory, the internal ordering 8448of the namespace nodes should not matter. 8449 8450 8451Enhanced error reporting for the case where a named object is not 8452found during control method execution. The full ACPI namepath 8453(name reference) of the object that was not found is displayed in 8454this case. 8455 8456Note: as a result of the overhaul of the namespace object types in 8457the previous release, the namespace nodes for the predefined 8458scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE 8459instead of ACPI_TYPE_ANY. This simplifies the namespace 8460management code but may affect code that walks the namespace tree 8461looking for specific object types. 8462 8463Code and Data Size: Current core subsystem library sizes are shown 8464below. These are the code and data sizes for the acpica.lib 8465produced by the Microsoft Visual C++ 6.0 compiler, and these 8466values do not include any ACPI driver or OSPM code. The debug 8467version of the code includes the debug output trace mechanism and 8468has a much larger code and data size. Note that these values will 8469vary depending on the efficiency of the compiler and the compiler 8470options used during generation. 8471 8472 Previous Release 8473 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 8474 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 8475 Current Release: 8476 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 8477 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 8478 8479 84802) Linux 8481 8482Fixed a problem introduced in the previous release where the 8483Processor and Thermal objects were not recognized and installed in 8484/proc. This was related to the scope type change described above. 8485 8486 84873) iASL Compiler/Disassembler 8488 8489Implemented the -g option to get all of the required ACPI tables 8490from the registry and save them to files (Windows version of the 8491compiler only.) The required tables are the FADT, FACS, and DSDT. 8492 8493Added ACPI table checksum validation during table disassembly in 8494order to catch corrupted tables. 8495 8496 8497---------------------------------------- 849822 October 2002. Summary of changes for version 20021022. 8499 85001) ACPI CA Core Subsystem: 8501 8502Implemented a restriction on the Scope operator that the target 8503must already exist in the namespace at the time the operator is 8504encountered (during table load or method execution). In other 8505words, forward references are not allowed and Scope() cannot 8506create a new object. This changes the previous behavior where the 8507interpreter would create the name if not found. This new behavior 8508correctly enables the search-to-root algorithm during namespace 8509lookup of the target name. Because of this upsearch, this fixes 8510the known Compaq _SB_.OKEC problem and makes both the AML 8511interpreter and iASL compiler compatible with other ACPI 8512implementations. 8513 8514Completed a major overhaul of the internal ACPI object types for 8515the ACPI Namespace and the associated operand objects. Many of 8516these types had become obsolete with the introduction of the two- 8517pass namespace load. This cleanup simplifies the code and makes 8518the entire namespace load mechanism much clearer and easier to 8519understand. 8520 8521Improved debug output for tracking scope opening/closing to help 8522diagnose scoping issues. The old scope name as well as the new 8523scope name are displayed. Also improved error messages for 8524problems with ASL Mutex objects and error messages for GPE 8525problems. 8526 8527Cleaned up the namespace dump code, removed obsolete code. 8528 8529All string output (for all namespace/object dumps) now uses the 8530common ACPI string output procedure which handles escapes properly 8531and does not emit non-printable characters. 8532 8533Fixed some issues with constants in the 64-bit version of the 8534local C library (utclib.c) 8535 8536 85372) Linux 8538 8539EC Driver: No longer attempts to acquire the Global Lock at 8540interrupt level. 8541 8542 85433) iASL Compiler/Disassembler 8544 8545Implemented ACPI 2.0B grammar change that disallows all Type 1 and 85462 opcodes outside of a control method. This means that the 8547"executable" operators (versus the "namespace" operators) cannot 8548be used at the table level; they can only be used within a control 8549method. 8550 8551Implemented the restriction on the Scope() operator where the 8552target must already exist in the namespace at the time the 8553operator is encountered (during ASL compilation). In other words, 8554forward references are not allowed and Scope() cannot create a new 8555object. This makes the iASL compiler compatible with other ACPI 8556implementations and makes the Scope() implementation adhere to the 8557ACPI specification. 8558 8559Fixed a problem where namepath optimization for the Alias operator 8560was optimizing the wrong path (of the two namepaths.) This caused 8561a "Missing alias link" error message. 8562 8563Fixed a problem where an "unknown reserved name" warning could be 8564incorrectly generated for names like "_SB" when the trailing 8565underscore is not used in the original ASL. 8566 8567Fixed a problem where the reserved name check did not handle 8568NamePaths with multiple NameSegs correctly. The first nameseg of 8569the NamePath was examined instead of the last NameSeg. 8570 8571 8572---------------------------------------- 8573 857402 October 2002. Summary of changes for this release. 8575 8576 85771) ACPI CA Core Subsystem version 20021002: 8578 8579Fixed a problem where a store/copy of a string to an existing 8580string did not always set the string length properly in the String 8581object. 8582 8583Fixed a reported problem with the ToString operator where the 8584behavior was identical to the ToHexString operator instead of just 8585simply converting a raw buffer to a string data type. 8586 8587Fixed a problem where CopyObject and the other "explicit" 8588conversion operators were not updating the internal namespace node 8589type as part of the store operation. 8590 8591Fixed a memory leak during implicit source operand conversion 8592where the original object was not deleted if it was converted to a 8593new object of a different type. 8594 8595Enhanced error messages for all problems associated with namespace 8596lookups. Common procedure generates and prints the lookup name as 8597well as the formatted status. 8598 8599Completed implementation of a new design for the Alias support 8600within the namespace. The existing design did not handle the case 8601where a new object was assigned to one of the two names due to the 8602use of an explicit conversion operator, resulting in the two names 8603pointing to two different objects. The new design simply points 8604the Alias name to the original name node - not to the object. 8605This results in a level of indirection that must be handled in the 8606name resolution mechanism. 8607 8608Code and Data Size: Current core subsystem library sizes are shown 8609below. These are the code and data sizes for the acpica.lib 8610produced by the Microsoft Visual C++ 6.0 compiler, and these 8611values do not include any ACPI driver or OSPM code. The debug 8612version of the code includes the debug output trace mechanism and 8613has a larger code and data size. Note that these values will vary 8614depending on the efficiency of the compiler and the compiler 8615options used during generation. 8616 8617 Previous Release 8618 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 8619 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 8620 Current Release: 8621 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 8622 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 8623 8624 86252) Linux 8626 8627Initialize thermal driver's timer before it is used. (Knut 8628Neumann) 8629 8630Allow handling negative celsius values. (Kochi Takayoshi) 8631 8632Fix thermal management and make trip points. R/W (Pavel Machek) 8633 8634Fix /proc/acpi/sleep. (P. Christeas) 8635 8636IA64 fixes. (David Mosberger) 8637 8638Fix reversed logic in blacklist code. (Sergio Monteiro Basto) 8639 8640Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik 8641Brodowski) 8642 8643 86443) iASL Compiler/Disassembler 8645 8646Clarified some warning/error messages. 8647 8648 8649---------------------------------------- 865018 September 2002. Summary of changes for this release. 8651 8652 86531) ACPI CA Core Subsystem version 20020918: 8654 8655Fixed a reported problem with reference chaining (via the Index() 8656and RefOf() operators) in the ObjectType() and SizeOf() operators. 8657The definition of these operators includes the dereferencing of 8658all chained references to return information on the base object. 8659 8660Fixed a problem with stores to indexed package elements - the 8661existing code would not complete the store if an "implicit 8662conversion" was not performed. In other words, if the existing 8663object (package element) was to be replaced completely, the code 8664didn't handle this case. 8665 8666Relaxed typechecking on the ASL "Scope" operator to allow the 8667target name to refer to an object of type Integer, String, or 8668Buffer, in addition to the scoping object types (Device, 8669predefined Scopes, Processor, PowerResource, and ThermalZone.) 8670This allows existing AML code that has workarounds for a bug in 8671Windows to function properly. A warning is issued, however. This 8672affects both the AML interpreter and the iASL compiler. Below is 8673an example of this type of ASL code: 8674 8675 Name(DEB,0x00) 8676 Scope(DEB) 8677 { 8678 8679Fixed some reported problems with 64-bit integer support in the 8680local implementation of C library functions (clib.c) 8681 8682 86832) Linux 8684 8685Use ACPI fix map region instead of IOAPIC region, since it is 8686undefined in non-SMP. 8687 8688Ensure that the SCI has the proper polarity and trigger, even on 8689systems that do not have an interrupt override entry in the MADT. 8690 86912.5 big driver reorganization (Pat Mochel) 8692 8693Use early table mapping code from acpitable.c (Andi Kleen) 8694 8695New blacklist entries (Andi Kleen) 8696 8697Blacklist improvements. Split blacklist code out into a separate 8698file. Move checking the blacklist to very early. Previously, we 8699would use ACPI tables, and then halfway through init, check the 8700blacklist -- too late. Now, it's early enough to completely fall- 8701back to non-ACPI. 8702 8703 87043) iASL Compiler/Disassembler version 20020918: 8705 8706Fixed a problem where the typechecking code didn't know that an 8707alias could point to a method. In other words, aliases were not 8708being dereferenced during typechecking. 8709 8710 8711---------------------------------------- 871229 August 2002. Summary of changes for this release. 8713 87141) ACPI CA Core Subsystem Version 20020829: 8715 8716If the target of a Scope() operator already exists, it must be an 8717object type that actually opens a scope -- such as a Device, 8718Method, Scope, etc. This is a fatal runtime error. Similar error 8719check has been added to the iASL compiler also. 8720 8721Tightened up the namespace load to disallow multiple names in the 8722same scope. This previously was allowed if both objects were of 8723the same type. (i.e., a lookup was the same as entering a new 8724name). 8725 8726 87272) Linux 8728 8729Ensure that the ACPI interrupt has the proper trigger and 8730polarity. 8731 8732local_irq_disable is extraneous. (Matthew Wilcox) 8733 8734Make "acpi=off" actually do what it says, and not use the ACPI 8735interpreter *or* the tables. 8736 8737Added arch-neutral support for parsing SLIT and SRAT tables (Kochi 8738Takayoshi) 8739 8740 87413) iASL Compiler/Disassembler Version 20020829: 8742 8743Implemented namepath optimization for name declarations. For 8744example, a declaration like "Method (\_SB_.ABCD)" would get 8745optimized to "Method (ABCD)" if the declaration is within the 8746\_SB_ scope. This optimization is in addition to the named 8747reference path optimization first released in the previous 8748version. This would seem to complete all possible optimizations 8749for namepaths within the ASL/AML. 8750 8751If the target of a Scope() operator already exists, it must be an 8752object type that actually opens a scope -- such as a Device, 8753Method, Scope, etc. 8754 8755Implemented a check and warning for unreachable code in the same 8756block below a Return() statement. 8757 8758Fixed a problem where the listing file was not generated if the 8759compiler aborted if the maximum error count was exceeded (200). 8760 8761Fixed a problem where the typechecking of method return values was 8762broken. This includes the check for a return value when the 8763method is invoked as a TermArg (a return value is expected.) 8764 8765Fixed a reported problem where EOF conditions during a quoted 8766string or comment caused a fault. 8767 8768 8769---------------------------------------- 877015 August 2002. Summary of changes for this release. 8771 87721) ACPI CA Core Subsystem Version 20020815: 8773 8774Fixed a reported problem where a Store to a method argument that 8775contains a reference did not perform the indirect store correctly. 8776This problem was created during the conversion to the new 8777reference object model - the indirect store to a method argument 8778code was not updated to reflect the new model. 8779 8780Reworked the ACPI mode change code to better conform to ACPI 2.0, 8781handle corner cases, and improve code legibility (Kochi Takayoshi) 8782 8783Fixed a problem with the pathname parsing for the carat (^) 8784prefix. The heavy use of the carat operator by the new namepath 8785optimization in the iASL compiler uncovered a problem with the AML 8786interpreter handling of this prefix. In the case where one or 8787more carats precede a single nameseg, the nameseg was treated as 8788standalone and the search rule (to root) was inadvertently 8789applied. This could cause both the iASL compiler and the 8790interpreter to find the wrong object or to miss the error that 8791should occur if the object does not exist at that exact pathname. 8792 8793Found and fixed the problem where the HP Pavilion DSDT would not 8794load. This was a relatively minor tweak to the table loading code 8795(a problem caused by the unexpected encounter with a method 8796invocation not within a control method), but it does not solve the 8797overall issue of the execution of AML code at the table level. 8798This investigation is still ongoing. 8799 8800Code and Data Size: Current core subsystem library sizes are shown 8801below. These are the code and data sizes for the acpica.lib 8802produced by the Microsoft Visual C++ 6.0 compiler, and these 8803values do not include any ACPI driver or OSPM code. The debug 8804version of the code includes the debug output trace mechanism and 8805has a larger code and data size. Note that these values will vary 8806depending on the efficiency of the compiler and the compiler 8807options used during generation. 8808 8809 Previous Release 8810 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 8811 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 8812 Current Release: 8813 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 8814 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 8815 8816 88172) Linux 8818 8819Remove redundant slab.h include (Brad Hards) 8820 8821Fix several bugs in thermal.c (Herbert Nachtnebel) 8822 8823Make CONFIG_ACPI_BOOT work properly (Pavel Machek) 8824 8825Change acpi_system_suspend to use updated irq functions (Pavel 8826Machek) 8827 8828Export acpi_get_firmware_table (Matthew Wilcox) 8829 8830Use proper root proc entry for ACPI (Kochi Takayoshi) 8831 8832Fix early-boot table parsing (Bjorn Helgaas) 8833 8834 88353) iASL Compiler/Disassembler 8836 8837Reworked the compiler options to make them more consistent and to 8838use two-letter options where appropriate. We were running out of 8839sensible letters. This may break some makefiles, so check the 8840current options list by invoking the compiler with no parameters. 8841 8842Completed the design and implementation of the ASL namepath 8843optimization option for the compiler. This option optimizes all 8844references to named objects to the shortest possible path. The 8845first attempt tries to utilize a single nameseg (4 characters) and 8846the "search-to-root" algorithm used by the interpreter. If that 8847cannot be used (because either the name is not in the search path 8848or there is a conflict with another object with the same name), 8849the pathname is optimized using the carat prefix (usually a 8850shorter string than specifying the entire path from the root.) 8851 8852Implemented support to obtain the DSDT from the Windows registry 8853(when the disassembly option is specified with no input file). 8854Added this code as the implementation for AcpiOsTableOverride in 8855the Windows OSL. Migrated the 16-bit code (used in the AcpiDump 8856utility) to scan memory for the DSDT to the AcpiOsTableOverride 8857function in the DOS OSL to make the disassembler truly OS 8858independent. 8859 8860Implemented a new option to disassemble and compile in one step. 8861When used without an input filename, this option will grab the 8862DSDT from the local machine, disassemble it, and compile it in one 8863step. 8864 8865Added a warning message for invalid escapes (a backslash followed 8866by any character other than the allowable escapes). This catches 8867the quoted string error "\_SB_" (which should be "\\_SB_" ). 8868 8869Also, there are numerous instances in the ACPI specification where 8870this error occurs. 8871 8872Added a compiler option to disable all optimizations. This is 8873basically the "compatibility mode" because by using this option, 8874the AML code will come out exactly the same as other ASL 8875compilers. 8876 8877Added error messages for incorrectly ordered dependent resource 8878functions. This includes: missing EndDependentFn macro at end of 8879dependent resource list, nested dependent function macros (both 8880start and end), and missing StartDependentFn macro. These are 8881common errors that should be caught at compile time. 8882 8883Implemented _OSI support for the disassembler and compiler. _OSI 8884must be included in the namespace for proper disassembly (because 8885the disassembler must know the number of arguments.) 8886 8887Added an "optimization" message type that is optional (off by 8888default). This message is used for all optimizations - including 8889constant folding, integer optimization, and namepath optimization. 8890 8891---------------------------------------- 889225 July 2002. Summary of changes for this release. 8893 8894 88951) ACPI CA Core Subsystem Version 20020725: 8896 8897The AML Disassembler has been enhanced to produce compilable ASL 8898code and has been integrated into the iASL compiler (see below) as 8899well as the single-step disassembly for the AML debugger and the 8900disassembler for the AcpiDump utility. All ACPI 2.0A opcodes, 8901resource templates and macros are fully supported. The 8902disassembler has been tested on over 30 different AML files, 8903producing identical AML when the resulting disassembled ASL file 8904is recompiled with the same ASL compiler. 8905 8906Modified the Resource Manager to allow zero interrupts and zero 8907dma channels during the GetCurrentResources call. This was 8908causing problems on some platforms. 8909 8910Added the AcpiOsRedirectOutput interface to the OSL to simplify 8911output redirection for the AcpiOsPrintf and AcpiOsVprintf 8912interfaces. 8913 8914Code and Data Size: Current core subsystem library sizes are shown 8915below. These are the code and data sizes for the acpica.lib 8916produced by the Microsoft Visual C++ 6.0 compiler, and these 8917values do not include any ACPI driver or OSPM code. The debug 8918version of the code includes the debug output trace mechanism and 8919has a larger code and data size. Note that these values will vary 8920depending on the efficiency of the compiler and the compiler 8921options used during generation. 8922 8923 Previous Release 8924 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 8925 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 8926 Current Release: 8927 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 8928 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 8929 8930 89312) Linux 8932 8933Fixed a panic in the EC driver (Dominik Brodowski) 8934 8935Implemented checksum of the R/XSDT itself during Linux table scan 8936(Richard Schaal) 8937 8938 89393) iASL compiler 8940 8941The AML disassembler is integrated into the compiler. The "-d" 8942option invokes the disassembler to completely disassemble an 8943input AML file, producing as output a text ASL file with the 8944extension ".dsl" (to avoid name collisions with existing .asl 8945source files.) A future enhancement will allow the disassembler 8946to obtain the BIOS DSDT from the registry under Windows. 8947 8948Fixed a problem with the VendorShort and VendorLong resource 8949descriptors where an invalid AML sequence was created. 8950 8951Implemented a fix for BufferData term in the ASL parser. It was 8952inadvertently defined twice, allowing invalid syntax to pass and 8953causing reduction conflicts. 8954 8955Fixed a problem where the Ones opcode could get converted to a 8956value of zero if "Ones" was used where a byte, word or dword value 8957was expected. The 64-bit value is now truncated to the correct 8958size with the correct value. 8959 8960 8961 8962---------------------------------------- 896302 July 2002. Summary of changes for this release. 8964 8965 89661) ACPI CA Core Subsystem Version 20020702: 8967 8968The Table Manager code has been restructured to add several new 8969features. Tables that are not required by the core subsystem 8970(other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer 8971validated in any way and are returned from AcpiGetFirmwareTable if 8972requested. The AcpiOsTableOverride interface is now called for 8973each table that is loaded by the subsystem in order to allow the 8974host to override any table it chooses. Previously, only the DSDT 8975could be overridden. Added one new files, tbrsdt.c and 8976tbgetall.c. 8977 8978Fixed a problem with the conversion of internal package objects to 8979external objects (when a package is returned from a control 8980method.) The return buffer length was set to zero instead of the 8981proper length of the package object. 8982 8983Fixed a reported problem with the use of the RefOf and DeRefOf 8984operators when passing reference arguments to control methods. A 8985new type of Reference object is used internally for references 8986produced by the RefOf operator. 8987 8988Added additional error messages in the Resource Manager to explain 8989AE_BAD_DATA errors when they occur during resource parsing. 8990 8991Split the AcpiEnableSubsystem into two primitives to enable a 8992finer granularity initialization sequence. These two calls should 8993be called in this order: AcpiEnableSubsystem (flags), 8994AcpiInitializeObjects (flags). The flags parameter remains the 8995same. 8996 8997 89982) Linux 8999 9000Updated the ACPI utilities module to understand the new style of 9001fully resolved package objects that are now returned from the core 9002subsystem. This eliminates errors of the form: 9003 9004 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT] 9005 acpi_utils-0430 [145] acpi_evaluate_reference: 9006 Invalid element in package (not a device reference) 9007 9008The method evaluation utility uses the new buffer allocation 9009scheme instead of calling AcpiEvaluate Object twice. 9010 9011Added support for ECDT. This allows the use of the Embedded 9012 9013Controller before the namespace has been fully initialized, which 9014is necessary for ACPI 2.0 support, and for some laptops to 9015initialize properly. (Laptops using ECDT are still rare, so only 9016limited testing was performed of the added functionality.) 9017 9018Fixed memory leaks in the EC driver. 9019 9020Eliminated a brittle code structure in acpi_bus_init(). 9021 9022Eliminated the acpi_evaluate() helper function in utils.c. It is 9023no longer needed since acpi_evaluate_object can optionally 9024allocate memory for the return object. 9025 9026Implemented fix for keyboard hang when getting battery readings on 9027some systems (Stephen White) 9028 9029PCI IRQ routing update (Dominik Brodowski) 9030 9031Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC 9032support 9033 9034---------------------------------------- 903511 June 2002. Summary of changes for this release. 9036 9037 90381) ACPI CA Core Subsystem Version 20020611: 9039 9040Fixed a reported problem where constants such as Zero and One 9041appearing within _PRT packages were not handled correctly within 9042the resource manager code. Originally reported against the ASL 9043compiler because the code generator now optimizes integers to 9044their minimal AML representation (i.e. AML constants if possible.) 9045The _PRT code now handles all AML constant opcodes correctly 9046(Zero, One, Ones, Revision). 9047 9048Fixed a problem with the Concatenate operator in the AML 9049interpreter where a buffer result object was incorrectly marked as 9050not fully evaluated, causing a run-time error of AE_AML_INTERNAL. 9051 9052All package sub-objects are now fully resolved before they are 9053returned from the external ACPI interfaces. This means that name 9054strings are resolved to object handles, and constant operators 9055(Zero, One, Ones, Revision) are resolved to Integers. 9056 9057Implemented immediate resolution of the AML Constant opcodes 9058(Zero, One, Ones, Revision) to Integer objects upon detection 9059within the AML stream. This has simplified and reduced the 9060generated code size of the subsystem by eliminating about 10 9061switch statements for these constants (which previously were 9062contained in Reference objects.) The complicating issues are that 9063the Zero opcode is used as a "placeholder" for unspecified 9064optional target operands and stores to constants are defined to be 9065no-ops. 9066 9067Code and Data Size: Current core subsystem library sizes are shown 9068below. These are the code and data sizes for the acpica.lib 9069produced by the Microsoft Visual C++ 6.0 compiler, and these 9070values do not include any ACPI driver or OSPM code. The debug 9071version of the code includes the debug output trace mechanism and 9072has a larger code and data size. Note that these values will vary 9073depending on the efficiency of the compiler and the compiler 9074options used during generation. 9075 9076 Previous Release 9077 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 9078 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 9079 Current Release: 9080 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 9081 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 9082 9083 90842) Linux 9085 9086 9087Added preliminary support for obtaining _TRA data for PCI root 9088bridges (Bjorn Helgaas). 9089 9090 90913) iASL Compiler Version X2046: 9092 9093Fixed a problem where the "_DDN" reserved name was defined to be a 9094control method with one argument. There are no arguments, and 9095_DDN does not have to be a control method. 9096 9097Fixed a problem with the Linux version of the compiler where the 9098source lines printed with error messages were the wrong lines. 9099This turned out to be the "LF versus CR/LF" difference between 9100Windows and Unix. This appears to be the longstanding issue 9101concerning listing output and error messages. 9102 9103Fixed a problem with the Linux version of compiler where opcode 9104names within error messages were wrong. This was caused by a 9105slight difference in the output of the Flex tool on Linux versus 9106Windows. 9107 9108Fixed a problem with the Linux compiler where the hex output files 9109contained some garbage data caused by an internal buffer overrun. 9110 9111 9112---------------------------------------- 911317 May 2002. Summary of changes for this release. 9114 9115 91161) ACPI CA Core Subsystem Version 20020517: 9117 9118Implemented a workaround to an BIOS bug discovered on the HP 9119OmniBook where the FADT revision number and the table size are 9120inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new 9121behavior is to fallback to using only the ACPI 1.0 fields of the 9122FADT if the table is too small to be a ACPI 2.0 table as claimed 9123by the revision number. Although this is a BIOS bug, this is a 9124case where the workaround is simple enough and with no side 9125effects, so it seemed prudent to add it. A warning message is 9126issued, however. 9127 9128Implemented minimum size checks for the fixed-length ACPI tables - 9129- the FADT and FACS, as well as consistency checks between the 9130revision number and the table size. 9131 9132Fixed a reported problem in the table override support where the 9133new table pointer was incorrectly treated as a physical address 9134instead of a logical address. 9135 9136Eliminated the use of the AE_AML_ERROR exception and replaced it 9137with more descriptive codes. 9138 9139Fixed a problem where an exception would occur if an ASL Field was 9140defined with no named Field Units underneath it (used by some 9141index fields). 9142 9143Code and Data Size: Current core subsystem library sizes are shown 9144below. These are the code and data sizes for the acpica.lib 9145produced by the Microsoft Visual C++ 6.0 compiler, and these 9146values do not include any ACPI driver or OSPM code. The debug 9147version of the code includes the debug output trace mechanism and 9148has a larger code and data size. Note that these values will vary 9149depending on the efficiency of the compiler and the compiler 9150options used during generation. 9151 9152 Previous Release 9153 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 9154 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 9155 Current Release: 9156 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 9157 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 9158 9159 9160 91612) Linux 9162 9163Much work done on ACPI init (MADT and PCI IRQ routing support). 9164(Paul D. and Dominik Brodowski) 9165 9166Fix PCI IRQ-related panic on boot (Sam Revitch) 9167 9168Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno) 9169 9170Fix "MHz" typo (Dominik Brodowski) 9171 9172Fix RTC year 2000 issue (Dominik Brodowski) 9173 9174Preclude multiple button proc entries (Eric Brunet) 9175 9176Moved arch-specific code out of include/platform/aclinux.h 9177 91783) iASL Compiler Version X2044: 9179 9180Implemented error checking for the string used in the EISAID macro 9181(Usually used in the definition of the _HID object.) The code now 9182strictly enforces the PnP format - exactly 7 characters, 3 9183uppercase letters and 4 hex digits. 9184 9185If a raw string is used in the definition of the _HID object 9186(instead of the EISAID macro), the string must contain all 9187alphanumeric characters (e.g., "*PNP0011" is not allowed because 9188of the asterisk.) 9189 9190Implemented checking for invalid use of ACPI reserved names for 9191most of the name creation operators (Name, Device, Event, Mutex, 9192OperationRegion, PowerResource, Processor, and ThermalZone.) 9193Previously, this check was only performed for control methods. 9194 9195Implemented an additional check on the Name operator to emit an 9196error if a reserved name that must be implemented in ASL as a 9197control method is used. We know that a reserved name must be a 9198method if it is defined with input arguments. 9199 9200The warning emitted when a namespace object reference is not found 9201during the cross reference phase has been changed into an error. 9202The "External" directive should be used for names defined in other 9203modules. 9204 9205 92064) Tools and Utilities 9207 9208The 16-bit tools (adump16 and aexec16) have been regenerated and 9209tested. 9210 9211Fixed a problem with the output of both acpidump and adump16 where 9212the indentation of closing parentheses and brackets was not 9213 9214aligned properly with the parent block. 9215 9216 9217---------------------------------------- 921803 May 2002. Summary of changes for this release. 9219 9220 92211) ACPI CA Core Subsystem Version 20020503: 9222 9223Added support a new OSL interface that allows the host operating 9224 9225system software to override the DSDT found in the firmware - 9226AcpiOsTableOverride. With this interface, the OSL can examine the 9227version of the firmware DSDT and replace it with a different one 9228if desired. 9229 9230Added new external interfaces for accessing ACPI registers from 9231device drivers and other system software - AcpiGetRegister and 9232AcpiSetRegister. This was simply an externalization of the 9233existing AcpiHwBitRegister interfaces. 9234 9235Fixed a regression introduced in the previous build where the 9236ASL/AML CreateField operator always returned an error, 9237"destination must be a NS Node". 9238 9239Extended the maximum time (before failure) to successfully enable 9240ACPI mode to 3 seconds. 9241 9242Code and Data Size: Current core subsystem library sizes are shown 9243below. These are the code and data sizes for the acpica.lib 9244produced by the Microsoft Visual C++ 6.0 compiler, and these 9245values do not include any ACPI driver or OSPM code. The debug 9246version of the code includes the debug output trace mechanism and 9247has a larger code and data size. Note that these values will vary 9248depending on the efficiency of the compiler and the compiler 9249options used during generation. 9250 9251 Previous Release 9252 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 9253 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 9254 Current Release: 9255 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 9256 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 9257 9258 92592) Linux 9260 9261Enhanced ACPI init code for SMP. We are now fully MPS and $PIR- 9262free. While 3 out of 4 of our in-house systems work fine, the last 9263one still hangs when testing the LAPIC timer. 9264 9265Renamed many files in 2.5 kernel release to omit "acpi_" from the 9266name. 9267 9268Added warning on boot for Presario 711FR. 9269 9270Sleep improvements (Pavel Machek) 9271 9272ACPI can now be built without CONFIG_PCI enabled. 9273 9274IA64: Fixed memory map functions (JI Lee) 9275 9276 92773) iASL Compiler Version X2043: 9278 9279Added support to allow the compiler to be integrated into the MS 9280VC++ development environment for one-button compilation of single 9281files or entire projects -- with error-to-source-line mapping. 9282 9283Implemented support for compile-time constant folding for the 9284Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0 9285specification. This allows the ASL writer to use expressions 9286instead of Integer/Buffer/String constants in terms that must 9287evaluate to constants at compile time and will also simplify the 9288emitted AML in any such sub-expressions that can be folded 9289(evaluated at compile-time.) This increases the size of the 9290compiler significantly because a portion of the ACPI CA AML 9291interpreter is included within the compiler in order to pre- 9292evaluate constant expressions. 9293 9294 9295Fixed a problem with the "Unicode" ASL macro that caused the 9296compiler to fault. (This macro is used in conjunction with the 9297_STR reserved name.) 9298 9299Implemented an AML opcode optimization to use the Zero, One, and 9300Ones opcodes where possible to further reduce the size of integer 9301constants and thus reduce the overall size of the generated AML 9302code. 9303 9304Implemented error checking for new reserved terms for ACPI version 93052.0A. 9306 9307Implemented the -qr option to display the current list of ACPI 9308reserved names known to the compiler. 9309 9310Implemented the -qc option to display the current list of ASL 9311operators that are allowed within constant expressions and can 9312therefore be folded at compile time if the operands are constants. 9313 9314 93154) Documentation 9316 9317Updated the Programmer's Reference for new interfaces, data types, 9318and memory allocation model options. 9319 9320Updated the iASL Compiler User Reference to apply new format and 9321add information about new features and options. 9322 9323---------------------------------------- 932419 April 2002. Summary of changes for this release. 9325 93261) ACPI CA Core Subsystem Version 20020419: 9327 9328The source code base for the Core Subsystem has been completely 9329cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit 9330versions. The Lint option files used are included in the 9331/acpi/generate/lint directory. 9332 9333Implemented enhanced status/error checking across the entire 9334Hardware manager subsystem. Any hardware errors (reported from 9335the OSL) are now bubbled up and will abort a running control 9336method. 9337 9338 9339Fixed a problem where the per-ACPI-table integer width (32 or 64) 9340was stored only with control method nodes, causing a fault when 9341non-control method code was executed during table loading. The 9342solution implemented uses a global variable to indicate table 9343width across the entire ACPI subsystem. Therefore, ACPI CA does 9344not support mixed integer widths across different ACPI tables 9345(DSDT, SSDT). 9346 9347Fixed a problem where NULL extended fields (X fields) in an ACPI 93482.0 ACPI FADT caused the table load to fail. Although the 9349existing ACPI specification is a bit fuzzy on this topic, the new 9350behavior is to fall back on a ACPI 1.0 field if the corresponding 9351ACPI 2.0 X field is zero (even though the table revision indicates 9352a full ACPI 2.0 table.) The ACPI specification will be updated to 9353clarify this issue. 9354 9355Fixed a problem with the SystemMemory operation region handler 9356where memory was always accessed byte-wise even if the AML- 9357specified access width was larger than a byte. This caused 9358problems on systems with memory-mapped I/O. Memory is now 9359accessed with the width specified. On systems that do not support 9360non-aligned transfers, a check is made to guarantee proper address 9361alignment before proceeding in order to avoid an AML-caused 9362alignment fault within the kernel. 9363 9364 9365Fixed a problem with the ExtendedIrq resource where only one byte 9366of the 4-byte Irq field was extracted. 9367 9368Fixed the AcpiExDigitsNeeded() procedure to support _UID. This 9369function was out of date and required a rewrite. 9370 9371Code and Data Size: Current core subsystem library sizes are shown 9372below. These are the code and data sizes for the acpica.lib 9373produced by the Microsoft Visual C++ 6.0 compiler, and these 9374values do not include any ACPI driver or OSPM code. The debug 9375version of the code includes the debug output trace mechanism and 9376has a larger code and data size. Note that these values will vary 9377depending on the efficiency of the compiler and the compiler 9378options used during generation. 9379 9380 Previous Release 9381 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 9382 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 9383 Current Release: 9384 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 9385 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 9386 9387 93882) Linux 9389 9390PCI IRQ routing fixes (Dominik Brodowski) 9391 9392 93933) iASL Compiler Version X2042: 9394 9395Implemented an additional compile-time error check for a field 9396unit whose size + minimum access width would cause a run-time 9397access beyond the end-of-region. Previously, only the field size 9398itself was checked. 9399 9400The Core subsystem and iASL compiler now share a common parse 9401object in preparation for compile-time evaluation of the type 94023/4/5 ASL operators. 9403 9404 9405---------------------------------------- 9406Summary of changes for this release: 03_29_02 9407 94081) ACPI CA Core Subsystem Version 20020329: 9409 9410Implemented support for late evaluation of TermArg operands to 9411Buffer and Package objects. This allows complex expressions to be 9412used in the declarations of these object types. 9413 9414Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI 94151.0, if the field was larger than 32 bits, it was returned as a 9416buffer - otherwise it was returned as an integer. In ACPI 2.0, 9417the field is returned as a buffer only if the field is larger than 941864 bits. The TableRevision is now considered when making this 9419conversion to avoid incompatibility with existing ASL code. 9420 9421Implemented logical addressing for AcpiOsGetRootPointer. This 9422allows an RSDP with either a logical or physical address. With 9423this support, the host OS can now override all ACPI tables with 9424one logical RSDP. Includes implementation of "typed" pointer 9425support to allow a common data type for both physical and logical 9426pointers internally. This required a change to the 9427AcpiOsGetRootPointer interface. 9428 9429Implemented the use of ACPI 2.0 Generic Address Structures for all 9430GPE, Fixed Event, and PM Timer I/O. This allows the use of memory 9431mapped I/O for these ACPI features. 9432 9433Initialization now ignores not only non-required tables (All 9434tables other than the FADT, FACS, DSDT, and SSDTs), but also does 9435not validate the table headers of unrecognized tables. 9436 9437Fixed a problem where a notify handler could only be 9438installed/removed on an object of type Device. All "notify" 9439 9440objects are now supported -- Devices, Processor, Power, and 9441Thermal. 9442 9443Removed most verbosity from the ACPI_DB_INFO debug level. Only 9444critical information is returned when this debug level is enabled. 9445 9446Code and Data Size: Current core subsystem library sizes are shown 9447below. These are the code and data sizes for the acpica.lib 9448produced by the Microsoft Visual C++ 6.0 compiler, and these 9449values do not include any ACPI driver or OSPM code. The debug 9450version of the code includes the debug output trace mechanism and 9451has a larger code and data size. Note that these values will vary 9452depending on the efficiency of the compiler and the compiler 9453options used during generation. 9454 9455 Previous Release 9456 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 9457 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 9458 Current Release: 9459 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 9460 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 9461 9462 94632) Linux: 9464 9465The processor driver (acpi_processor.c) now fully supports ACPI 94662.0-based processor performance control (e.g. Intel(R) 9467SpeedStep(TM) technology) Note that older laptops that only have 9468the Intel "applet" interface are not supported through this. The 9469'limit' and 'performance' interface (/proc) are fully functional. 9470[Note that basic policy for controlling performance state 9471transitions will be included in the next version of ospmd.] The 9472idle handler was modified to more aggressively use C2, and PIIX4 9473errata handling underwent a complete overhaul (big thanks to 9474Dominik Brodowski). 9475 9476Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR- 9477based devices in the ACPI namespace are now dynamically bound 9478(associated) with their PCI counterparts (e.g. PCI1->01:00.0). 9479This allows, among other things, ACPI to resolve bus numbers for 9480subordinate PCI bridges. 9481 9482Enhanced PCI IRQ routing to get the proper bus number for _PRT 9483entries defined underneath PCI bridges. 9484 9485Added IBM 600E to bad bios list due to invalid _ADR value for 9486PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing. 9487 9488In the process of adding full MADT support (e.g. IOAPIC) for IA32 9489(acpi.c, mpparse.c) -- stay tuned. 9490 9491Added back visual differentiation between fixed-feature and 9492control-method buttons in dmesg. Buttons are also subtyped (e.g. 9493button/power/PWRF) to simplify button identification. 9494 9495We no longer use -Wno-unused when compiling debug. Please ignore 9496any "_THIS_MODULE defined but not used" messages. 9497 9498Can now shut down the system using "magic sysrq" key. 9499 9500 95013) iASL Compiler version 2041: 9502 9503Fixed a problem where conversion errors for hex/octal/decimal 9504constants were not reported. 9505 9506Implemented a fix for the General Register template Address field. 9507This field was 8 bits when it should be 64. 9508 9509Fixed a problem where errors/warnings were no longer being emitted 9510within the listing output file. 9511 9512Implemented the ACPI 2.0A restriction on ACPI Table Signatures to 9513exactly 4 characters, alphanumeric only. 9514 9515 9516 9517 9518---------------------------------------- 9519Summary of changes for this release: 03_08_02 9520 9521 95221) ACPI CA Core Subsystem Version 20020308: 9523 9524Fixed a problem with AML Fields where the use of the "AccessAny" 9525keyword could cause an interpreter error due to attempting to read 9526or write beyond the end of the parent Operation Region. 9527 9528Fixed a problem in the SystemMemory Operation Region handler where 9529an attempt was made to map memory beyond the end of the region. 9530This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY" 9531errors on some Linux systems. 9532 9533Fixed a problem where the interpreter/namespace "search to root" 9534algorithm was not functioning for some object types. Relaxed the 9535internal restriction on the search to allow upsearches for all 9536external object types as well as most internal types. 9537 9538 95392) Linux: 9540 9541We now use safe_halt() macro versus individual calls to sti | hlt. 9542 9543Writing to the processor limit interface should now work. "echo 1" 9544will increase the limit, 2 will decrease, and 0 will reset to the 9545 9546default. 9547 9548 95493) ASL compiler: 9550 9551Fixed segfault on Linux version. 9552 9553 9554---------------------------------------- 9555Summary of changes for this release: 02_25_02 9556 95571) ACPI CA Core Subsystem: 9558 9559 9560Fixed a problem where the GPE bit masks were not initialized 9561properly, causing erratic GPE behavior. 9562 9563Implemented limited support for multiple calling conventions. The 9564code can be generated with either the VPL (variable parameter 9565list, or "C") convention, or the FPL (fixed parameter list, or 9566"Pascal") convention. The core subsystem is about 3.4% smaller 9567when generated with FPL. 9568 9569 95702) Linux 9571 9572Re-add some /proc/acpi/event functionality that was lost during 9573the rewrite 9574 9575Resolved issue with /proc events for fixed-feature buttons showing 9576up as the system device. 9577 9578Fixed checks on C2/C3 latencies to be inclusive of maximum values. 9579 9580Replaced AE_ERRORs in acpi_osl.c with more specific error codes. 9581 9582Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi" 9583 9584Fixed limit interface & usage to fix bugs with passive cooling 9585hysterisis. 9586 9587Restructured PRT support. 9588 9589 9590---------------------------------------- 9591Summary of changes for this label: 02_14_02 9592 9593 95941) ACPI CA Core Subsystem: 9595 9596Implemented support in AcpiLoadTable to allow loading of FACS and 9597FADT tables. 9598 9599Suport for the now-obsolete interim 0.71 64-bit ACPI tables has 9600been removed. All 64-bit platforms should be migrated to the ACPI 96012.0 tables. The actbl71.h header has been removed from the source 9602tree. 9603 9604All C macros defined within the subsystem have been prefixed with 9605"ACPI_" to avoid collision with other system include files. 9606 9607Removed the return value for the two AcpiOsPrint interfaces, since 9608it is never used and causes lint warnings for ignoring the return 9609value. 9610 9611Added error checking to all internal mutex acquire and release 9612calls. Although a failure from one of these interfaces is 9613probably a fatal system error, these checks will cause the 9614immediate abort of the currently executing method or interface. 9615 9616Fixed a problem where the AcpiSetCurrentResources interface could 9617fault. This was a side effect of the deployment of the new memory 9618allocation model. 9619 9620Fixed a couple of problems with the Global Lock support introduced 9621in the last major build. The "common" (1.0/2.0) internal FACS was 9622being overwritten with the FACS signature and clobbering the 9623Global Lock pointer. Also, the actual firmware FACS was being 9624unmapped after construction of the "common" FACS, preventing 9625access to the actual Global Lock field within it. The "common" 9626internal FACS is no longer installed as an actual ACPI table; it 9627is used simply as a global. 9628 9629Code and Data Size: Current core subsystem library sizes are shown 9630below. These are the code and data sizes for the acpica.lib 9631produced by the Microsoft Visual C++ 6.0 compiler, and these 9632values do not include any ACPI driver or OSPM code. The debug 9633version of the code includes the debug output trace mechanism and 9634has a larger code and data size. Note that these values will vary 9635depending on the efficiency of the compiler and the compiler 9636options used during generation. 9637 9638 Previous Release (02_07_01) 9639 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 9640 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 9641 Current Release: 9642 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 9643 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 9644 9645 96462) Linux 9647 9648Updated Linux-specific code for core macro and OSL interface 9649changes described above. 9650 9651Improved /proc/acpi/event. It now can be opened only once and has 9652proper poll functionality. 9653 9654Fixed and restructured power management (acpi_bus). 9655 9656Only create /proc "view by type" when devices of that class exist. 9657 9658Fixed "charging/discharging" bug (and others) in acpi_battery. 9659 9660Improved thermal zone code. 9661 9662 96633) ASL Compiler, version X2039: 9664 9665 9666Implemented the new compiler restriction on ASL String hex/octal 9667escapes to non-null, ASCII values. An error results if an invalid 9668value is used. (This will require an ACPI 2.0 specification 9669change.) 9670 9671AML object labels that are output to the optional C and ASM source 9672are now prefixed with both the ACPI table signature and table ID 9673to help guarantee uniqueness within a large BIOS project. 9674 9675 9676---------------------------------------- 9677Summary of changes for this label: 02_01_02 9678 96791) ACPI CA Core Subsystem: 9680 9681ACPI 2.0 support is complete in the entire Core Subsystem and the 9682ASL compiler. All new ACPI 2.0 operators are implemented and all 9683other changes for ACPI 2.0 support are complete. With 9684simultaneous code and data optimizations throughout the subsystem, 9685ACPI 2.0 support has been implemented with almost no additional 9686cost in terms of code and data size. 9687 9688Implemented a new mechanism for allocation of return buffers. If 9689the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will 9690be allocated on behalf of the caller. Consolidated all return 9691buffer validation and allocation to a common procedure. Return 9692buffers will be allocated via the primary OSL allocation interface 9693since it appears that a separate pool is not needed by most users. 9694If a separate pool is required for these buffers, the caller can 9695still use the original mechanism and pre-allocate the buffer(s). 9696 9697Implemented support for string operands within the DerefOf 9698operator. 9699 9700Restructured the Hardware and Event managers to be table driven, 9701simplifying the source code and reducing the amount of generated 9702code. 9703 9704Split the common read/write low-level ACPI register bitfield 9705procedure into a separate read and write, simplifying the code 9706considerably. 9707 9708Obsoleted the AcpiOsCallocate OSL interface. This interface was 9709used only a handful of times and didn't have enough critical mass 9710for a separate interface. Replaced with a common calloc procedure 9711in the core. 9712 9713Fixed a reported problem with the GPE number mapping mechanism 9714that allows GPE1 numbers to be non-contiguous with GPE0. 9715Reorganized the GPE information and shrunk a large array that was 9716originally large enough to hold info for all possible GPEs (256) 9717to simply large enough to hold all GPEs up to the largest GPE 9718number on the machine. 9719 9720Fixed a reported problem with resource structure alignment on 64- 9721bit platforms. 9722 9723Changed the AcpiEnableEvent and AcpiDisableEvent external 9724interfaces to not require any flags for the common case of 9725enabling/disabling a GPE. 9726 9727Implemented support to allow a "Notify" on a Processor object. 9728 9729Most TBDs in comments within the source code have been resolved 9730and eliminated. 9731 9732 9733Fixed a problem in the interpreter where a standalone parent 9734prefix (^) was not handled correctly in the interpreter and 9735debugger. 9736 9737Removed obsolete and unnecessary GPE save/restore code. 9738 9739Implemented Field support in the ASL Load operator. This allows a 9740table to be loaded from a named field, in addition to loading a 9741table directly from an Operation Region. 9742 9743Implemented timeout and handle support in the external Global Lock 9744interfaces. 9745 9746Fixed a problem in the AcpiDump utility where pathnames were no 9747longer being generated correctly during the dump of named objects. 9748 9749Modified the AML debugger to give a full display of if/while 9750predicates instead of just one AML opcode at a time. (The 9751predicate can have several nested ASL statements.) The old method 9752was confusing during single stepping. 9753 9754Code and Data Size: Current core subsystem library sizes are shown 9755below. These are the code and data sizes for the acpica.lib 9756produced by the Microsoft Visual C++ 6.0 compiler, and these 9757values do not include any ACPI driver or OSPM code. The debug 9758version of the code includes the debug output trace mechanism and 9759has a larger code and data size. Note that these values will vary 9760depending on the efficiency of the compiler and the compiler 9761options used during generation. 9762 9763 Previous Release (12_18_01) 9764 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 9765 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 9766 Current Release: 9767 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 9768 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 9769 97702) Linux 9771 9772 Implemented fix for PIIX reverse throttling errata (Processor 9773driver) 9774 9775Added new Limit interface (Processor and Thermal drivers) 9776 9777New thermal policy (Thermal driver) 9778 9779Many updates to /proc 9780 9781Battery "low" event support (Battery driver) 9782 9783Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers) 9784 9785IA32 - IA64 initialization unification, no longer experimental 9786 9787Menuconfig options redesigned 9788 97893) ASL Compiler, version X2037: 9790 9791Implemented several new output features to simplify integration of 9792AML code into firmware: 1) Output the AML in C source code with 9793labels for each named ASL object. The original ASL source code 9794is interleaved as C comments. 2) Output the AML in ASM source code 9795with labels and interleaved ASL source. 3) Output the AML in 9796raw hex table form, in either C or ASM. 9797 9798Implemented support for optional string parameters to the 9799LoadTable operator. 9800 9801Completed support for embedded escape sequences within string 9802literals. The compiler now supports all single character escapes 9803as well as the Octal and Hex escapes. Note: the insertion of a 9804null byte into a string literal (via the hex/octal escape) causes 9805the string to be immediately terminated. A warning is issued. 9806 9807Fixed a problem where incorrect AML was generated for the case 9808where an ASL namepath consists of a single parent prefix ( 9809 9810) with no trailing name segments. 9811 9812The compiler has been successfully generated with a 64-bit C 9813compiler. 9814 9815 9816 9817 9818---------------------------------------- 9819Summary of changes for this label: 12_18_01 9820 98211) Linux 9822 9823Enhanced blacklist with reason and severity fields. Any table's 9824signature may now be used to identify a blacklisted system. 9825 9826Call _PIC control method to inform the firmware which interrupt 9827model the OS is using. Turn on any disabled link devices. 9828 9829Cleaned up busmgr /proc error handling (Andreas Dilger) 9830 9831 2) ACPI CA Core Subsystem: 9832 9833Implemented ACPI 2.0 semantics for the "Break" operator (Exit from 9834while loop) 9835 9836Completed implementation of the ACPI 2.0 "Continue", 9837"ConcatenateResTemplate", "DataTableRegion", and "LoadTable" 9838operators. All new ACPI 2.0 operators are now implemented in both 9839the ASL compiler and the AML interpreter. The only remaining ACPI 98402.0 task is support for the String data type in the DerefOf 9841operator. Fixed a problem with AcquireMutex where the status code 9842was lost if the caller had to actually wait for the mutex. 9843 9844Increased the maximum ASL Field size from 64K bits to 4G bits. 9845 9846Completed implementation of the external Global Lock interfaces -- 9847AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and 9848Handler parameters were added. 9849 9850Completed another pass at removing warnings and issues when 9851compiling with 64-bit compilers. The code now compiles cleanly 9852with the Intel 64-bit C/C++ compiler. Most notably, the pointer 9853add and subtract (diff) macros have changed considerably. 9854 9855 9856Created and deployed a new ACPI_SIZE type that is 64-bits wide on 985764-bit platforms, 32-bits on all others. This type is used 9858wherever memory allocation and/or the C sizeof() operator is used, 9859and affects the OSL memory allocation interfaces AcpiOsAllocate 9860and AcpiOsCallocate. 9861 9862Implemented sticky user breakpoints in the AML debugger. 9863 9864Code and Data Size: Current core subsystem library sizes are shown 9865below. These are the code and data sizes for the acpica.lib 9866produced by the Microsoft Visual C++ 6.0 compiler, and these 9867values do not include any ACPI driver or OSPM code. The debug 9868version of the code includes the debug output trace mechanism and 9869has a larger code and data size. Note that these values will vary 9870depending on the efficiency of the compiler and the compiler 9871options used during generation. 9872 9873 Previous Release (12_05_01) 9874 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 9875 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 9876 Current Release: 9877 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 9878 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 9879 9880 3) ASL Compiler, version X2034: 9881 9882Now checks for (and generates an error if detected) the use of a 9883Break or Continue statement without an enclosing While statement. 9884 9885 9886Successfully generated the compiler with the Intel 64-bit C 9887compiler. 9888 9889 ---------------------------------------- 9890Summary of changes for this label: 12_05_01 9891 9892 1) ACPI CA Core Subsystem: 9893 9894The ACPI 2.0 CopyObject operator is fully implemented. This 9895operator creates a new copy of an object (and is also used to 9896bypass the "implicit conversion" mechanism of the Store operator.) 9897 9898The ACPI 2.0 semantics for the SizeOf operator are fully 9899implemented. The change is that performing a SizeOf on a 9900reference object causes an automatic dereference of the object to 9901tha actual value before the size is evaluated. This behavior was 9902undefined in ACPI 1.0. 9903 9904The ACPI 2.0 semantics for the Extended IRQ resource descriptor 9905have been implemented. The interrupt polarity and mode are now 9906independently set. 9907 9908Fixed a problem where ASL Constants (Zero, One, Ones, Revision) 9909appearing in Package objects were not properly converted to 9910integers when the internal Package was converted to an external 9911object (via the AcpiEvaluateObject interface.) 9912 9913Fixed a problem with the namespace object deletion mechanism for 9914objects created by control methods. There were two parts to this 9915problem: 1) Objects created during the initialization phase method 9916parse were not being deleted, and 2) The object owner ID mechanism 9917to track objects was broken. 9918 9919Fixed a problem where the use of the ASL Scope operator within a 9920control method would result in an invalid opcode exception. 9921 9922Fixed a problem introduced in the previous label where the buffer 9923length required for the _PRT structure was not being returned 9924correctly. 9925 9926Code and Data Size: Current core subsystem library sizes are shown 9927below. These are the code and data sizes for the acpica.lib 9928produced by the Microsoft Visual C++ 6.0 compiler, and these 9929values do not include any ACPI driver or OSPM code. The debug 9930version of the code includes the debug output trace mechanism and 9931has a larger code and data size. Note that these values will vary 9932depending on the efficiency of the compiler and the compiler 9933options used during generation. 9934 9935 Previous Release (11_20_01) 9936 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 9937 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 9938 9939 Current Release: 9940 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 9941 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 9942 9943 2) Linux: 9944 9945Updated all files to apply cleanly against 2.4.16. 9946 9947Added basic PCI Interrupt Routing Table (PRT) support for IA32 9948(acpi_pci.c), and unified the PRT code for IA32 and IA64. This 9949version supports both static and dyanmic PRT entries, but dynamic 9950entries are treated as if they were static (not yet 9951reconfigurable). Architecture- specific code to use this data is 9952absent on IA32 but should be available shortly. 9953 9954Changed the initialization sequence to start the ACPI interpreter 9955(acpi_init) prior to initialization of the PCI driver (pci_init) 9956in init/main.c. This ordering is required to support PRT and 9957facilitate other (future) enhancement. A side effect is that the 9958ACPI bus driver and certain device drivers can no longer be loaded 9959as modules. 9960 9961Modified the 'make menuconfig' options to allow PCI Interrupt 9962Routing support to be included without the ACPI Bus and other 9963device drivers. 9964 9965 3) ASL Compiler, version X2033: 9966 9967Fixed some issues with the use of the new CopyObject and 9968DataTableRegion operators. Both are fully functional. 9969 9970 ---------------------------------------- 9971Summary of changes for this label: 11_20_01 9972 9973 20 November 2001. Summary of changes for this release. 9974 9975 1) ACPI CA Core Subsystem: 9976 9977Updated Index support to match ACPI 2.0 semantics. Storing a 9978Integer, String, or Buffer to an Index of a Buffer will store only 9979the least-significant byte of the source to the Indexed buffer 9980byte. Multiple writes are not performed. 9981 9982Fixed a problem where the access type used in an AccessAs ASL 9983operator was not recorded correctly into the field object. 9984 9985Fixed a problem where ASL Event objects were created in a 9986signalled state. Events are now created in an unsignalled state. 9987 9988The internal object cache is now purged after table loading and 9989initialization to reduce the use of dynamic kernel memory -- on 9990the assumption that object use is greatest during the parse phase 9991of the entire table (versus the run-time use of individual control 9992methods.) 9993 9994ACPI 2.0 variable-length packages are now fully operational. 9995 9996Code and Data Size: Code and Data optimizations have permitted new 9997feature development with an actual reduction in the library size. 9998Current core subsystem library sizes are shown below. These are 9999the code and data sizes for the acpica.lib produced by the 10000Microsoft Visual C++ 6.0 compiler, and these values do not include 10001any ACPI driver or OSPM code. The debug version of the code 10002includes the debug output trace mechanism and has a larger code 10003and data size. Note that these values will vary depending on the 10004efficiency of the compiler and the compiler options used during 10005generation. 10006 10007 Previous Release (11_09_01): 10008 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 10009 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 10010 10011 Current Release: 10012 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 10013 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 10014 10015 2) Linux: 10016 10017Enhanced the ACPI boot-time initialization code to allow the use 10018of Local APIC tables for processor enumeration on IA-32, and to 10019pave the way for a fully MPS-free boot (on SMP systems) in the 10020near future. This functionality replaces 10021arch/i386/kernel/acpitables.c, which was introduced in an earlier 100222.4.15-preX release. To enable this feature you must add 10023"acpi_boot=on" to the kernel command line -- see the help entry 10024for CONFIG_ACPI_BOOT for more information. An IA-64 release is in 10025the works... 10026 10027Restructured the configuration options to allow boot-time table 10028parsing support without inclusion of the ACPI Interpreter (and 10029other) code. 10030 10031NOTE: This release does not include fixes for the reported events, 10032power-down, and thermal passive cooling issues (coming soon). 10033 10034 3) ASL Compiler: 10035 10036Added additional typechecking for Fields within restricted access 10037Operation Regions. All fields within EC and CMOS regions must be 10038declared with ByteAcc. All fields withing SMBus regions must be 10039declared with the BufferAcc access type. 10040 10041Fixed a problem where the listing file output of control methods 10042no longer interleaved the actual AML code with the ASL source 10043code. 10044 10045 10046 10047 10048---------------------------------------- 10049Summary of changes for this label: 11_09_01 10050 100511) ACPI CA Core Subsystem: 10052 10053Implemented ACPI 2.0-defined support for writes to fields with a 10054Buffer, String, or Integer source operand that is smaller than the 10055target field. In these cases, the source operand is zero-extended 10056to fill the target field. 10057 10058Fixed a problem where a Field starting bit offset (within the 10059parent operation region) was calculated incorrectly if the 10060 10061alignment of the field differed from the access width. This 10062affected CreateWordField, CreateDwordField, CreateQwordField, and 10063possibly other fields that use the "AccessAny" keyword. 10064 10065Fixed a problem introduced in the 11_02_01 release where indirect 10066stores through method arguments did not operate correctly. 10067 100682) Linux: 10069 10070Implemented boot-time ACPI table parsing support 10071(CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code 10072facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than 10073legacy BIOS interfaces (e.g. MPS) for the configuration of system 10074processors, memory, and interrupts during setup_arch(). Note that 10075this patch does not include the required architecture-specific 10076changes required to apply this information -- subsequent patches 10077will be posted for both IA32 and IA64 to achieve this. 10078 10079Added low-level sleep support for IA32 platforms, courtesy of Pat 10080Mochel. This allows IA32 systems to transition to/from various 10081sleeping states (e.g. S1, S3), although the lack of a centralized 10082driver model and power-manageable drivers will prevent its 10083(successful) use on most systems. 10084 10085Revamped the ACPI 'menuconfig' layout: created new "ACPI Support" 10086submenu, unified IA32 and IA64 options, added new "Boot using ACPI 10087tables" option, etc. 10088 10089Increased the default timeout for the EC driver from 1ms to 10ms 10090(1000 cycles of 10us) to try to address AE_TIME errors during EC 10091transactions. 10092 10093 ---------------------------------------- 10094Summary of changes for this label: 11_02_01 10095 100961) ACPI CA Core Subsystem: 10097 10098ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access 10099(QWordAcc keyword). All ACPI 2.0 64-bit support is now 10100implemented. 10101 10102OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required 10103changes to support ACPI 2.0 Qword field access. Read/Write 10104PciConfiguration(), Read/Write Memory(), and Read/Write Port() now 10105accept an ACPI_INTEGER (64 bits) as the value parameter. Also, 10106the value parameter for the address space handler interface is now 10107an ACPI_INTEGER. OSL implementations of these interfaces must now 10108handle the case where the Width parameter is 64. 10109 10110Index Fields: Fixed a problem where unaligned bit assembly and 10111disassembly for IndexFields was not supported correctly. 10112 10113Index and Bank Fields: Nested Index and Bank Fields are now 10114supported. During field access, a check is performed to ensure 10115that the value written to an Index or Bank register is not out of 10116the range of the register. The Index (or Bank) register is 10117written before each access to the field data. Future support will 10118include allowing individual IndexFields to be wider than the 10119DataRegister width. 10120 10121Fields: Fixed a problem where the AML interpreter was incorrectly 10122attempting to write beyond the end of a Field/OpRegion. This was 10123a boundary case that occurred when a DWORD field was written to a 10124BYTE access OpRegion, forcing multiple writes and causing the 10125interpreter to write one datum too many. 10126 10127Fields: Fixed a problem with Field/OpRegion access where the 10128starting bit address of a field was incorrectly calculated if the 10129current access type was wider than a byte (WordAcc, DwordAcc, or 10130QwordAcc). 10131 10132Fields: Fixed a problem where forward references to individual 10133FieldUnits (individual Field names within a Field definition) were 10134not resolved during the AML table load. 10135 10136Fields: Fixed a problem where forward references from a Field 10137definition to the parent Operation Region definition were not 10138resolved during the AML table load. 10139 10140Fields: Duplicate FieldUnit names within a scope are now detected 10141during AML table load. 10142 10143Acpi Interfaces: Fixed a problem where the AcpiGetName() interface 10144returned an incorrect name for the root node. 10145 10146Code and Data Size: Code and Data optimizations have permitted new 10147feature development with an actual reduction in the library size. 10148Current core subsystem library sizes are shown below. These are 10149the code and data sizes for the acpica.lib produced by the 10150Microsoft Visual C++ 6.0 compiler, and these values do not include 10151any ACPI driver or OSPM code. The debug version of the code 10152includes the debug output trace mechanism and has a larger code 10153and data size. Note that these values will vary depending on the 10154efficiency of the compiler and the compiler options used during 10155generation. 10156 10157 Previous Release (10_18_01): 10158 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 10159 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 10160 10161 Current Release: 10162 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 10163 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 10164 10165 2) Linux: 10166 10167Improved /proc processor output (Pavel Machek) Re-added 10168MODULE_LICENSE("GPL") to all modules. 10169 10170 3) ASL Compiler version X2030: 10171 10172Duplicate FieldUnit names within a scope are now detected and 10173flagged as errors. 10174 10175 4) Documentation: 10176 10177Programmer Reference updated to reflect OSL and address space 10178handler interface changes described above. 10179 10180---------------------------------------- 10181Summary of changes for this label: 10_18_01 10182 10183ACPI CA Core Subsystem: 10184 10185Fixed a problem with the internal object reference count mechanism 10186that occasionally caused premature object deletion. This resolves 10187all of the outstanding problem reports where an object is deleted 10188in the middle of an interpreter evaluation. Although this problem 10189only showed up in rather obscure cases, the solution to the 10190problem involved an adjustment of all reference counts involving 10191objects attached to namespace nodes. 10192 10193Fixed a problem with Field support in the interpreter where 10194writing to an aligned field whose length is an exact multiple (2 10195or greater) of the field access granularity would cause an attempt 10196to write beyond the end of the field. 10197 10198The top level AML opcode execution functions within the 10199interpreter have been renamed with a more meaningful and 10200consistent naming convention. The modules exmonad.c and 10201exdyadic.c were eliminated. New modules are exoparg1.c, 10202exoparg2.c, exoparg3.c, and exoparg6.c. 10203 10204Support for the ACPI 2.0 "Mid" ASL operator has been implemented. 10205 10206Fixed a problem where the AML debugger was causing some internal 10207objects to not be deleted during subsystem termination. 10208 10209Fixed a problem with the external AcpiEvaluateObject interface 10210where the subsystem would fault if the named object to be 10211evaluated refered to a constant such as Zero, Ones, etc. 10212 10213Fixed a problem with IndexFields and BankFields where the 10214subsystem would fault if the index, data, or bank registers were 10215not defined in the same scope as the field itself. 10216 10217Added printf format string checking for compilers that support 10218this feature. Corrected more than 50 instances of issues with 10219format specifiers within invocations of ACPI_DEBUG_PRINT 10220throughout the core subsystem code. 10221 10222The ASL "Revision" operator now returns the ACPI support level 10223implemented in the core - the value "2" since the ACPI 2.0 support 10224is more than 50% implemented. 10225 10226Enhanced the output of the AML debugger "dump namespace" command 10227to output in a more human-readable form. 10228 10229Current core subsystem library code sizes are shown below. These 10230 10231are the code and data sizes for the acpica.lib produced by the 10232Microsoft Visual C++ 6.0 compiler, and these values do not include 10233any ACPI driver or OSPM code. The debug version of the code 10234includes the full debug trace mechanism -- leading to a much 10235 10236larger code and data size. Note that these values will vary 10237depending on the efficiency of the compiler and the compiler 10238options used during generation. 10239 10240 Previous Label (09_20_01): 10241 Non-Debug Version: 65K Code, 5K Data, 70K Total 10242 Debug Version: 138K Code, 58K Data, 196K Total 10243 10244 This Label: 10245 10246 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 10247 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 10248 10249Linux: 10250 10251Implemented a "Bad BIOS Blacklist" to track machines that have 10252known ASL/AML problems. 10253 10254Enhanced the /proc interface for the thermal zone driver and added 10255support for _HOT (the critical suspend trip point). The 'info' 10256file now includes threshold/policy information, and allows setting 10257of _SCP (cooling preference) and _TZP (polling frequency) values 10258to the 'info' file. Examples: "echo tzp=5 > info" sets the polling 10259frequency to 5 seconds, and "echo scp=1 > info" sets the cooling 10260preference to the passive/quiet mode (if supported by the ASL). 10261 10262Implemented a workaround for a gcc bug that resuted in an OOPs 10263when loading the control method battery driver. 10264 10265 ---------------------------------------- 10266Summary of changes for this label: 09_20_01 10267 10268 ACPI CA Core Subsystem: 10269 10270The AcpiEnableEvent and AcpiDisableEvent interfaces have been 10271modified to allow individual GPE levels to be flagged as wake- 10272enabled (i.e., these GPEs are to remain enabled when the platform 10273sleeps.) 10274 10275The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now 10276support wake-enabled GPEs. This means that upon entering the 10277sleep state, all GPEs that are not wake-enabled are disabled. 10278When leaving the sleep state, these GPEs are reenabled. 10279 10280A local double-precision divide/modulo module has been added to 10281enhance portability to OS kernels where a 64-bit math library is 10282not available. The new module is "utmath.c". 10283 10284Several optimizations have been made to reduce the use of CPU 10285stack. Originally over 2K, the maximum stack usage is now below 102862K at 1860 bytes (1.82k) 10287 10288Fixed a problem with the AcpiGetFirmwareTable interface where the 10289root table pointer was not mapped into a logical address properly. 10290 10291Fixed a problem where a NULL pointer was being dereferenced in the 10292interpreter code for the ASL Notify operator. 10293 10294Fixed a problem where the use of the ASL Revision operator 10295returned an error. This operator now returns the current version 10296of the ACPI CA core subsystem. 10297 10298Fixed a problem where objects passed as control method parameters 10299to AcpiEvaluateObject were always deleted at method termination. 10300However, these objects may end up being stored into the namespace 10301by the called method. The object reference count mechanism was 10302applied to these objects instead of a force delete. 10303 10304Fixed a problem where static strings or buffers (contained in the 10305AML code) that are declared as package elements within the ASL 10306code could cause a fault because the interpreter would attempt to 10307delete them. These objects are now marked with the "static 10308object" flag to prevent any attempt to delete them. 10309 10310Implemented an interpreter optimization to use operands directly 10311from the state object instead of extracting the operands to local 10312variables. This reduces stack use and code size, and improves 10313performance. 10314 10315The module exxface.c was eliminated as it was an unnecessary extra 10316layer of code. 10317 10318Current core subsystem library code sizes are shown below. These 10319are the code and data sizes for the acpica.lib produced by the 10320Microsoft Visual C++ 6.0 compiler, and these values do not include 10321any ACPI driver or OSPM code. The debug version of the code 10322includes the full debug trace mechanism -- leading to a much 10323larger code and data size. Note that these values will vary 10324depending on the efficiency of the compiler and the compiler 10325options used during generation. 10326 10327 Non-Debug Version: 65K Code, 5K Data, 70K Total 10328(Previously 69K) Debug Version: 138K Code, 58K Data, 196K 10329Total (Previously 195K) 10330 10331Linux: 10332 10333Support for ACPI 2.0 64-bit integers has been added. All ACPI 10334Integer objects are now 64 bits wide 10335 10336All Acpi data types and structures are now in lower case. Only 10337Acpi macros are upper case for differentiation. 10338 10339 Documentation: 10340 10341Changes to the external interfaces as described above. 10342 10343 ---------------------------------------- 10344Summary of changes for this label: 08_31_01 10345 10346 ACPI CA Core Subsystem: 10347 10348A bug with interpreter implementation of the ASL Divide operator 10349was found and fixed. The implicit function return value (not the 10350explicit store operands) was returning the remainder instead of 10351the quotient. This was a longstanding bug and it fixes several 10352known outstanding issues on various platforms. 10353 10354The ACPI_DEBUG_PRINT and function trace entry/exit macros have 10355been further optimized for size. There are 700 invocations of the 10356DEBUG_PRINT macro alone, so each optimization reduces the size of 10357the debug version of the subsystem significantly. 10358 10359A stack trace mechanism has been implemented. The maximum stack 10360usage is about 2K on 32-bit platforms. The debugger command "stat 10361stack" will display the current maximum stack usage. 10362 10363All public symbols and global variables within the subsystem are 10364now prefixed with the string "Acpi". This keeps all of the 10365symbols grouped together in a kernel map, and avoids conflicts 10366with other kernel subsystems. 10367 10368Most of the internal fixed lookup tables have been moved into the 10369code segment via the const operator. 10370 10371Several enhancements have been made to the interpreter to both 10372reduce the code size and improve performance. 10373 10374Current core subsystem library code sizes are shown below. These 10375are the code and data sizes for the acpica.lib produced by the 10376Microsoft Visual C++ 6.0 compiler, and these values do not include 10377any ACPI driver or OSPM code. The debug version of the code 10378includes the full debug trace mechanism which contains over 700 10379invocations of the DEBUG_PRINT macro, 500 function entry macro 10380invocations, and over 900 function exit macro invocations -- 10381leading to a much larger code and data size. Note that these 10382values will vary depending on the efficiency of the compiler and 10383the compiler options used during generation. 10384 10385 Non-Debug Version: 64K Code, 5K Data, 69K Total 10386Debug Version: 137K Code, 58K Data, 195K Total 10387 10388 Linux: 10389 10390Implemented wbinvd() macro, pending a kernel-wide definition. 10391 10392Fixed /proc/acpi/event to handle poll() and short reads. 10393 10394 ASL Compiler, version X2026: 10395 10396Fixed a problem introduced in the previous label where the AML 10397 10398code emitted for package objects produced packages with zero 10399length. 10400 10401 ---------------------------------------- 10402Summary of changes for this label: 08_16_01 10403 10404ACPI CA Core Subsystem: 10405 10406The following ACPI 2.0 ASL operators have been implemented in the 10407AML interpreter (These are already supported by the Intel ASL 10408compiler): ToDecimalString, ToHexString, ToString, ToInteger, and 10409ToBuffer. Support for 64-bit AML constants is implemented in the 10410AML parser, debugger, and disassembler. 10411 10412The internal memory tracking mechanism (leak detection code) has 10413been upgraded to reduce the memory overhead (a separate tracking 10414block is no longer allocated for each memory allocation), and now 10415supports all of the internal object caches. 10416 10417The data structures and code for the internal object caches have 10418been coelesced and optimized so that there is a single cache and 10419memory list data structure and a single group of functions that 10420implement generic cache management. This has reduced the code 10421size in both the debug and release versions of the subsystem. 10422 10423The DEBUG_PRINT macro(s) have been optimized for size and replaced 10424by ACPI_DEBUG_PRINT. The syntax for this macro is slightly 10425different, because it generates a single call to an internal 10426function. This results in a savings of about 90 bytes per 10427invocation, resulting in an overall code and data savings of about 1042816% in the debug version of the subsystem. 10429 10430 Linux: 10431 10432Fixed C3 disk corruption problems and re-enabled C3 on supporting 10433machines. 10434 10435Integrated low-level sleep code by Patrick Mochel. 10436 10437Further tweaked source code Linuxization. 10438 10439Other minor fixes. 10440 10441 ASL Compiler: 10442 10443Support for ACPI 2.0 variable length packages is fixed/completed. 10444 10445Fixed a problem where the optional length parameter for the ACPI 104462.0 ToString operator. 10447 10448Fixed multiple extraneous error messages when a syntax error is 10449detected within the declaration line of a control method. 10450 10451 ---------------------------------------- 10452Summary of changes for this label: 07_17_01 10453 10454ACPI CA Core Subsystem: 10455 10456Added a new interface named AcpiGetFirmwareTable to obtain any 10457ACPI table via the ACPI signature. The interface can be called at 10458any time during kernel initialization, even before the kernel 10459virtual memory manager is initialized and paging is enabled. This 10460allows kernel subsystems to obtain ACPI tables very early, even 10461before the ACPI CA subsystem is initialized. 10462 10463Fixed a problem where Fields defined with the AnyAcc attribute 10464could be resolved to the incorrect address under the following 10465conditions: 1) the field width is larger than 8 bits and 2) the 10466parent operation region is not defined on a DWORD boundary. 10467 10468Fixed a problem where the interpreter is not being locked during 10469namespace initialization (during execution of the _INI control 10470methods), causing an error when an attempt is made to release it 10471later. 10472 10473ACPI 2.0 support in the AML Interpreter has begun and will be 10474ongoing throughout the rest of this year. In this label, The Mod 10475operator is implemented. 10476 10477Added a new data type to contain full PCI addresses named 10478ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device, 10479and Function values. 10480 10481 Linux: 10482 10483Enhanced the Linux version of the source code to change most 10484capitalized ACPI type names to lowercase. For example, all 10485instances of ACPI_STATUS are changed to acpi_status. This will 10486result in a large diff, but the change is strictly cosmetic and 10487aligns the CA code closer to the Linux coding standard. 10488 10489OSL Interfaces: 10490 10491The interfaces to the PCI configuration space have been changed to 10492add the PCI Segment number and to split the single 32-bit combined 10493DeviceFunction field into two 16-bit fields. This was 10494accomplished by moving the four values that define an address in 10495PCI configuration space (segment, bus, device, and function) to 10496the new ACPI_PCI_ID structure. 10497 10498The changes to the PCI configuration space interfaces led to a 10499reexamination of the complete set of address space access 10500interfaces for PCI, I/O, and Memory. The previously existing 18 10501interfaces have proven difficult to maintain (any small change 10502must be propagated across at least 6 interfaces) and do not easily 10503allow for future expansion to 64 bits if necessary. Also, on some 10504systems, it would not be appropriate to demultiplex the access 10505width (8, 16, 32,or 64) before calling the OSL if the 10506corresponding native OS interfaces contain a similar access width 10507parameter. For these reasons, the 18 address space interfaces 10508have been replaced by these 6 new ones: 10509 10510AcpiOsReadPciConfiguration 10511AcpiOsWritePciConfiguration 10512AcpiOsReadMemory 10513AcpiOsWriteMemory 10514AcpiOsReadPort 10515AcpiOsWritePort 10516 10517Added a new interface named AcpiOsGetRootPointer to allow the OSL 10518to perform the platform and/or OS-specific actions necessary to 10519obtain the ACPI RSDP table pointer. On IA-32 platforms, this 10520interface will simply call down to the CA core to perform the low- 10521memory search for the table. On IA-64, the RSDP is obtained from 10522EFI. Migrating this interface to the OSL allows the CA core to 10523 10524remain OS and platform independent. 10525 10526Added a new interface named AcpiOsSignal to provide a generic 10527"function code and pointer" interface for various miscellaneous 10528signals and notifications that must be made to the host OS. The 10529first such signals are intended to support the ASL Fatal and 10530Breakpoint operators. In the latter case, the AcpiOsBreakpoint 10531interface has been obsoleted. 10532 10533The definition of the AcpiFormatException interface has been 10534changed to simplify its use. The caller no longer must supply a 10535buffer to the call; A pointer to a const string is now returned 10536directly. This allows the call to be easily used in printf 10537statements, etc. since the caller does not have to manage a local 10538buffer. 10539 10540 10541 ASL Compiler, Version X2025: 10542 10543The ACPI 2.0 Switch/Case/Default operators have been implemented 10544and are fully functional. They will work with all ACPI 1.0 10545interpreters, since the operators are simply translated to If/Else 10546pairs. 10547 10548The ACPI 2.0 ElseIf operator is implemented and will also work 10549with 1.0 interpreters, for the same reason. 10550 10551Implemented support for ACPI 2.0 variable-length packages. These 10552packages have a separate opcode, and their size is determined by 10553the interpreter at run-time. 10554 10555Documentation The ACPI CA Programmer Reference has been updated to 10556reflect the new interfaces and changes to existing interfaces. 10557 10558 ------------------------------------------ 10559Summary of changes for this label: 06_15_01 10560 10561 ACPI CA Core Subsystem: 10562 10563Fixed a problem where a DWORD-accessed field within a Buffer 10564object would get its byte address inadvertently rounded down to 10565the nearest DWORD. Buffers are always Byte-accessible. 10566 10567 ASL Compiler, version X2024: 10568 10569Fixed a problem where the Switch() operator would either fault or 10570hang the compiler. Note however, that the AML code for this ACPI 105712.0 operator is not yet implemented. 10572 10573Compiler uses the new AcpiOsGetTimer interface to obtain compile 10574timings. 10575 10576Implementation of the CreateField operator automatically converts 10577a reference to a named field within a resource descriptor from a 10578byte offset to a bit offset if required. 10579 10580Added some missing named fields from the resource descriptor 10581support. These are the names that are automatically created by the 10582compiler to reference fields within a descriptor. They are only 10583valid at compile time and are not passed through to the AML 10584interpreter. 10585 10586Resource descriptor named fields are now typed as Integers and 10587subject to compile-time typechecking when used in expressions. 10588 10589 ------------------------------------------ 10590Summary of changes for this label: 05_18_01 10591 10592 ACPI CA Core Subsystem: 10593 10594Fixed a couple of problems in the Field support code where bits 10595from adjacent fields could be returned along with the proper field 10596bits. Restructured the field support code to improve performance, 10597readability and maintainability. 10598 10599New DEBUG_PRINTP macro automatically inserts the procedure name 10600into the output, saving hundreds of copies of procedure name 10601strings within the source, shrinking the memory footprint of the 10602debug version of the core subsystem. 10603 10604 Source Code Structure: 10605 10606The source code directory tree was restructured to reflect the 10607current organization of the component architecture. Some files 10608and directories have been moved and/or renamed. 10609 10610 Linux: 10611 10612Fixed leaking kacpidpc processes. 10613 10614Fixed queueing event data even when /proc/acpi/event is not 10615opened. 10616 10617 ASL Compiler, version X2020: 10618 10619Memory allocation performance enhancement - over 24X compile time 10620improvement on large ASL files. Parse nodes and namestring 10621buffers are now allocated from a large internal compiler buffer. 10622 10623The temporary .SRC file is deleted unless the "-s" option is 10624specified 10625 10626The "-d" debug output option now sends all output to the .DBG file 10627instead of the console. 10628 10629"External" second parameter is now optional 10630 10631"ElseIf" syntax now properly allows the predicate 10632 10633Last operand to "Load" now recognized as a Target operand 10634 10635Debug object can now be used anywhere as a normal object. 10636 10637ResourceTemplate now returns an object of type BUFFER 10638 10639EISAID now returns an object of type INTEGER 10640 10641"Index" now works with a STRING operand 10642 10643"LoadTable" now accepts optional parameters 10644 10645"ToString" length parameter is now optional 10646 10647"Interrupt (ResourceType," parse error fixed. 10648 10649"Register" with a user-defined region space parse error fixed 10650 10651Escaped backslash at the end of a string ("\\") scan/parse error 10652fixed 10653 10654"Revision" is now an object of type INTEGER. 10655 10656 10657 10658------------------------------------------ 10659Summary of changes for this label: 05_02_01 10660 10661Linux: 10662 10663/proc/acpi/event now blocks properly. 10664 10665Removed /proc/sys/acpi. You can still dump your DSDT from 10666/proc/acpi/dsdt. 10667 10668 ACPI CA Core Subsystem: 10669 10670Fixed a problem introduced in the previous label where some of the 10671"small" resource descriptor types were not recognized. 10672 10673Improved error messages for the case where an ASL Field is outside 10674the range of the parent operation region. 10675 10676 ASL Compiler, version X2018: 10677 10678 10679Added error detection for ASL Fields that extend beyond the length 10680of the parent operation region (only if the length of the region 10681is known at compile time.) This includes fields that have a 10682minimum access width that is smaller than the parent region, and 10683individual field units that are partially or entirely beyond the 10684extent of the parent. 10685 10686 10687 10688------------------------------------------ 10689Summary of changes for this label: 04_27_01 10690 10691 ACPI CA Core Subsystem: 10692 10693Fixed a problem where the namespace mutex could be released at the 10694wrong time during execution of AcpiRemoveAddressSpaceHandler. 10695 10696Added optional thread ID output for debug traces, to simplify 10697debugging of multiple threads. Added context switch notification 10698when the debug code realizes that a different thread is now 10699executing ACPI code. 10700 10701Some additional external data types have been prefixed with the 10702string "ACPI_" for consistency. This may effect existing code. 10703The data types affected are the external callback typedefs - e.g., 10704 10705WALK_CALLBACK becomes ACPI_WALK_CALLBACK. 10706 10707 Linux: 10708 10709Fixed an issue with the OSL semaphore implementation where a 10710thread was waking up with an error from receiving a SIGCHLD 10711signal. 10712 10713Linux version of ACPI CA now uses the system C library for string 10714manipulation routines instead of a local implementation. 10715 10716Cleaned up comments and removed TBDs. 10717 10718 ASL Compiler, version X2017: 10719 10720Enhanced error detection and reporting for all file I/O 10721operations. 10722 10723 Documentation: 10724 10725Programmer Reference updated to version 1.06. 10726 10727 10728 10729------------------------------------------ 10730Summary of changes for this label: 04_13_01 10731 10732 ACPI CA Core Subsystem: 10733 10734Restructured support for BufferFields and RegionFields. 10735BankFields support is now fully operational. All known 32-bit 10736limitations on field sizes have been removed. Both BufferFields 10737and (Operation) RegionFields are now supported by the same field 10738management code. 10739 10740Resource support now supports QWORD address and IO resources. The 1074116/32/64 bit address structures and the Extended IRQ structure 10742have been changed to properly handle Source Resource strings. 10743 10744A ThreadId of -1 is now used to indicate a "mutex not acquired" 10745condition internally and must never be returned by AcpiOsThreadId. 10746This reserved value was changed from 0 since Unix systems allow a 10747thread ID of 0. 10748 10749Linux: 10750 10751Driver code reorganized to enhance portability 10752 10753Added a kernel configuration option to control ACPI_DEBUG 10754 10755Fixed the EC driver to honor _GLK. 10756 10757ASL Compiler, version X2016: 10758 10759Fixed support for the "FixedHw" keyword. Previously, the FixedHw 10760address space was set to 0, not 0x7f as it should be. 10761 10762 ------------------------------------------ 10763Summary of changes for this label: 03_13_01 10764 10765 ACPI CA Core Subsystem: 10766 10767During ACPI initialization, the _SB_._INI method is now run if 10768present. 10769 10770Notify handler fix - notifies are deferred until the parent method 10771completes execution. This fixes the "mutex already acquired" 10772issue seen occasionally. 10773 10774Part of the "implicit conversion" rules in ACPI 2.0 have been 10775found to cause compatibility problems with existing ASL/AML. The 10776convert "result-to-target-type" implementation has been removed 10777for stores to method Args and Locals. Source operand conversion 10778is still fully implemented. Possible changes to ACPI 2.0 10779specification pending. 10780 10781Fix to AcpiRsCalculatePciRoutingTableLength to return correct 10782length. 10783 10784Fix for compiler warnings for 64-bit compiles. 10785 10786 Linux: 10787 10788/proc output aligned for easier parsing. 10789 10790Release-version compile problem fixed. 10791 10792New kernel configuration options documented in Configure.help. 10793 10794IBM 600E - Fixed Sleep button may generate "Invalid <NULL> 10795context" message. 10796 10797 OSPM: 10798 10799Power resource driver integrated with bus manager. 10800 10801Fixed kernel fault during active cooling for thermal zones. 10802 10803Source Code: 10804 10805The source code tree has been restructured. 10806 10807 10808 10809------------------------------------------ 10810Summary of changes for this label: 03_02_01 10811 10812 Linux OS Services Layer (OSL): 10813 10814Major revision of all Linux-specific code. 10815 10816Modularized all ACPI-specific drivers. 10817 10818Added new thermal zone and power resource drivers. 10819 10820Revamped /proc interface (new functionality is under /proc/acpi). 10821 10822New kernel configuration options. 10823 10824 Linux known issues: 10825 10826New kernel configuration options not documented in Configure.help 10827yet. 10828 10829 10830Module dependencies not currently implemented. If used, they 10831should be loaded in this order: busmgr, power, ec, system, 10832processor, battery, ac_adapter, button, thermal. 10833 10834Modules will not load if CONFIG_MODVERSION is set. 10835 10836IBM 600E - entering S5 may reboot instead of shutting down. 10837 10838IBM 600E - Sleep button may generate "Invalid <NULL> context" 10839message. 10840 10841Some systems may fail with "execution mutex already acquired" 10842message. 10843 10844 ACPI CA Core Subsystem: 10845 10846Added a new OSL Interface, AcpiOsGetThreadId. This was required 10847for the deadlock detection code. Defined to return a non-zero, 32- 10848bit thread ID for the currently executing thread. May be a non- 10849zero constant integer on single-thread systems. 10850 10851Implemented deadlock detection for internal subsystem mutexes. We 10852may add conditional compilation for this code (debug only) later. 10853 10854ASL/AML Mutex object semantics are now fully supported. This 10855includes multiple acquires/releases by owner and support for the 10856 10857Mutex SyncLevel parameter. 10858 10859A new "Force Release" mechanism automatically frees all ASL 10860Mutexes that have been acquired but not released when a thread 10861exits the interpreter. This forces conformance to the ACPI spec 10862("All mutexes must be released when an invocation exits") and 10863prevents deadlocked ASL threads. This mechanism can be expanded 10864(later) to monitor other resource acquisitions if OEM ASL code 10865continues to misbehave (which it will). 10866 10867Several new ACPI exception codes have been added for the Mutex 10868support. 10869 10870Recursive method calls are now allowed and supported (the ACPI 10871spec does in fact allow recursive method calls.) The number of 10872recursive calls is subject to the restrictions imposed by the 10873SERIALIZED method keyword and SyncLevel (ACPI 2.0) method 10874parameter. 10875 10876Implemented support for the SyncLevel parameter for control 10877methods (ACPI 2.0 feature) 10878 10879Fixed a deadlock problem when multiple threads attempted to use 10880the interpreter. 10881 10882Fixed a problem where the string length of a String package 10883element was not always set in a package returned from 10884AcpiEvaluateObject. 10885 10886Fixed a problem where the length of a String package element was 10887not always included in the length of the overall package returned 10888from AcpiEvaluateObject. 10889 10890Added external interfaces (Acpi*) to the ACPI debug memory 10891manager. This manager keeps a list of all outstanding 10892allocations, and can therefore detect memory leaks and attempts to 10893free memory blocks more than once. Useful for code such as the 10894power manager, etc. May not be appropriate for device drivers. 10895Performance with the debug code enabled is slow. 10896 10897The ACPI Global Lock is now an optional hardware element. 10898 10899 ASL Compiler Version X2015: 10900 10901Integrated changes to allow the compiler to be generated on 10902multiple platforms. 10903 10904Linux makefile added to generate the compiler on Linux 10905 10906 Source Code: 10907 10908All platform-specific headers have been moved to their own 10909subdirectory, Include/Platform. 10910 10911New source file added, Interpreter/ammutex.c 10912 10913New header file, Include/acstruct.h 10914 10915 Documentation: 10916 10917The programmer reference has been updated for the following new 10918interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree 10919 10920 ------------------------------------------ 10921Summary of changes for this label: 02_08_01 10922 10923Core ACPI CA Subsystem: Fixed a problem where an error was 10924incorrectly returned if the return resource buffer was larger than 10925the actual data (in the resource interfaces). 10926 10927References to named objects within packages are resolved to the 10928 10929full pathname string before packages are returned directly (via 10930the AcpiEvaluateObject interface) or indirectly via the resource 10931interfaces. 10932 10933Linux OS Services Layer (OSL): 10934 10935Improved /proc battery interface. 10936 10937 10938Added C-state debugging output and other miscellaneous fixes. 10939 10940ASL Compiler Version X2014: 10941 10942All defined method arguments can now be used as local variables, 10943including the ones that are not actually passed in as parameters. 10944The compiler tracks initialization of the arguments and issues an 10945exception if they are used without prior assignment (just like 10946locals). 10947 10948The -o option now specifies a filename prefix that is used for all 10949output files, including the AML output file. Otherwise, the 10950default behavior is as follows: 1) the AML goes to the file 10951specified in the DSDT. 2) all other output files use the input 10952source filename as the base. 10953 10954 ------------------------------------------ 10955Summary of changes for this label: 01_25_01 10956 10957Core ACPI CA Subsystem: Restructured the implementation of object 10958store support within the interpreter. This includes support for 10959the Store operator as well as any ASL operators that include a 10960target operand. 10961 10962Partially implemented support for Implicit Result-to-Target 10963conversion. This is when a result object is converted on the fly 10964to the type of an existing target object. Completion of this 10965support is pending further analysis of the ACPI specification 10966concerning this matter. 10967 10968CPU-specific code has been removed from the subsystem (hardware 10969directory). 10970 10971New Power Management Timer functions added 10972 10973Linux OS Services Layer (OSL): Moved system state transition code 10974to the core, fixed it, and modified Linux OSL accordingly. 10975 10976Fixed C2 and C3 latency calculations. 10977 10978 10979We no longer use the compilation date for the version message on 10980initialization, but retrieve the version from AcpiGetSystemInfo(). 10981 10982Incorporated for fix Sony VAIO machines. 10983 10984Documentation: The Programmer Reference has been updated and 10985reformatted. 10986 10987 10988ASL Compiler: Version X2013: Fixed a problem where the line 10989numbering and error reporting could get out of sync in the 10990presence of multiple include files. 10991 10992 ------------------------------------------ 10993Summary of changes for this label: 01_15_01 10994 10995Core ACPI CA Subsystem: 10996 10997Implemented support for type conversions in the execution of the 10998ASL Concatenate operator (The second operand is converted to 10999match the type of the first operand before concatenation.) 11000 11001Support for implicit source operand conversion is partially 11002implemented. The ASL source operand types Integer, Buffer, and 11003String are freely interchangeable for most ASL operators and are 11004converted by the interpreter on the fly as required. Implicit 11005Target operand conversion (where the result is converted to the 11006target type before storing) is not yet implemented. 11007 11008Support for 32-bit and 64-bit BCD integers is implemented. 11009 11010Problem fixed where a field read on an aligned field could cause a 11011read past the end of the field. 11012 11013New exception, AE_AML_NO_RETURN_VALUE, is returned when a method 11014does not return a value, but the caller expects one. (The ASL 11015compiler flags this as a warning.) 11016 11017ASL Compiler: 11018 11019Version X2011: 110201. Static typechecking of all operands is implemented. This 11021prevents the use of invalid objects (such as using a Package where 11022an Integer is required) at compile time instead of at interpreter 11023run-time. 110242. The ASL source line is printed with ALL errors and warnings. 110253. Bug fix for source EOF without final linefeed. 110264. Debug option is split into a parse trace and a namespace trace. 110275. Namespace output option (-n) includes initial values for 11028integers and strings. 110296. Parse-only option added for quick syntax checking. 110307. Compiler checks for duplicate ACPI name declarations 11031 11032Version X2012: 110331. Relaxed typechecking to allow interchangeability between 11034strings, integers, and buffers. These types are now converted by 11035the interpreter at runtime. 110362. Compiler reports time taken by each internal subsystem in the 11037debug output file. 11038 11039 11040 ------------------------------------------ 11041Summary of changes for this label: 12_14_00 11042 11043ASL Compiler: 11044 11045This is the first official release of the compiler. Since the 11046compiler requires elements of the Core Subsystem, this label 11047synchronizes everything. 11048 11049------------------------------------------ 11050Summary of changes for this label: 12_08_00 11051 11052 11053Fixed a problem where named references within the ASL definition 11054of both OperationRegions and CreateXXXFields did not work 11055properly. The symptom was an AE_AML_OPERAND_TYPE during 11056initialization of the region/field. This is similar (but not 11057related internally) to the problem that was fixed in the last 11058label. 11059 11060Implemented both 32-bit and 64-bit support for the BCD ASL 11061functions ToBCD and FromBCD. 11062 11063Updated all legal headers to include "2000" in the copyright 11064years. 11065 11066 ------------------------------------------ 11067Summary of changes for this label: 12_01_00 11068 11069Fixed a problem where method invocations within the ASL definition 11070of both OperationRegions and CreateXXXFields did not work 11071properly. The symptom was an AE_AML_OPERAND_TYPE during 11072initialization of the region/field: 11073 11074 nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments 11075[DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s) 11076(0x3005) 11077 11078Fixed a problem where operators with more than one nested 11079subexpression would fail. The symptoms were varied, by mostly 11080AE_AML_OPERAND_TYPE errors. This was actually a rather serious 11081problem that has gone unnoticed until now. 11082 11083 Subtract (Add (1,2), Multiply (3,4)) 11084 11085Fixed a problem where AcpiGetHandle didn't quite get fixed in the 11086previous build (The prefix part of a relative path was handled 11087incorrectly). 11088 11089Fixed a problem where Operation Region initialization failed if 11090the operation region name was a "namepath" instead of a simple 11091"nameseg". Symptom was an AE_NO_OPERAND error. 11092 11093Fixed a problem where an assignment to a local variable via the 11094indirect RefOf mechanism only worked for the first such 11095assignment. Subsequent assignments were ignored. 11096 11097 ------------------------------------------ 11098Summary of changes for this label: 11_15_00 11099 11100ACPI 2.0 table support with backwards support for ACPI 1.0 and the 111010.71 extensions. Note: although we can read ACPI 2.0 BIOS tables, 11102the AML interpreter does NOT have support for the new 2.0 ASL 11103grammar terms at this time. 11104 11105All ACPI hardware access is via the GAS structures in the ACPI 2.0 11106FADT. 11107 11108All physical memory addresses across all platforms are now 64 bits 11109wide. Logical address width remains dependent on the platform 11110(i.e., "void *"). 11111 11112AcpiOsMapMemory interface changed to a 64-bit physical address. 11113 11114The AML interpreter integer size is now 64 bits, as per the ACPI 111152.0 specification. 11116 11117For backwards compatibility with ACPI 1.0, ACPI tables with a 11118revision number less than 2 use 32-bit integers only. 11119 11120Fixed a problem where the evaluation of OpRegion operands did not 11121always resolve them to numbers properly. 11122 11123------------------------------------------ 11124Summary of changes for this label: 10_20_00 11125 11126Fix for CBN_._STA issue. This fix will allow correct access to 11127CBN_ OpRegions when the _STA returns 0x8. 11128 11129Support to convert ACPI constants (Ones, Zeros, One) to actual 11130values before a package object is returned 11131 11132Fix for method call as predicate to if/while construct causing 11133incorrect if/while behavior 11134 11135Fix for Else block package lengths sometimes calculated wrong (if 11136block > 63 bytes) 11137 11138Fix for Processor object length field, was always zero 11139 11140Table load abort if FACP sanity check fails 11141 11142Fix for problem with Scope(name) if name already exists 11143 11144Warning emitted if a named object referenced cannot be found 11145(resolved) during method execution. 11146 11147 11148 11149 11150 11151------------------------------------------ 11152Summary of changes for this label: 9_29_00 11153 11154New table initialization interfaces: AcpiInitializeSubsystem no 11155longer has any parameters AcpiFindRootPointer - Find the RSDP (if 11156necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP- 11157>RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by 11158AcpiLoadTables 11159 11160Note: These interface changes require changes to all existing OSDs 11161 11162The PCI_Config default address space handler is always installed 11163at the root namespace object. 11164 11165------------------------------------------- 11166Summary of changes for this label: 09_15_00 11167 11168The new initialization architecture is implemented. New 11169interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize) 11170AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace 11171 11172(Namespace is automatically loaded when a table is loaded) 11173 11174The ACPI_OPERAND_OBJECT has been optimized to shrink its size from 1117552 bytes to 32 bytes. There is usually one of these for every 11176namespace object, so the memory savings is significant. 11177 11178Implemented just-in-time evaluation of the CreateField operators. 11179 11180Bug fixes for IA-64 support have been integrated. 11181 11182Additional code review comments have been implemented 11183 11184The so-called "third pass parse" has been replaced by a final walk 11185through the namespace to initialize all operation regions (address 11186spaces) and fields that have not yet been initialized during the 11187execution of the various _INI and REG methods. 11188 11189New file - namespace/nsinit.c 11190 11191------------------------------------------- 11192Summary of changes for this label: 09_01_00 11193 11194Namespace manager data structures have been reworked to change the 11195primary object from a table to a single object. This has 11196resulted in dynamic memory savings of 3X within the namespace and 111972X overall in the ACPI CA subsystem. 11198 11199Fixed problem where the call to AcpiEvFindPciRootBuses was 11200inadvertently left commented out. 11201 11202Reduced the warning count when generating the source with the GCC 11203compiler. 11204 11205Revision numbers added to each module header showing the 11206SourceSafe version of the file. Please refer to this version 11207number when giving us feedback or comments on individual modules. 11208 11209The main object types within the subsystem have been renamed to 11210clarify their purpose: 11211 11212ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT 11213ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT 11214ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE 11215 11216NOTE: no changes to the initialization sequence are included in 11217this label. 11218 11219------------------------------------------- 11220Summary of changes for this label: 08_23_00 11221 11222Fixed problem where TerminateControlMethod was being called 11223multiple times per method 11224 11225Fixed debugger problem where single stepping caused a semaphore to 11226be oversignalled 11227 11228Improved performance through additional parse object caching - 11229added ACPI_EXTENDED_OP type 11230 11231------------------------------------------- 11232Summary of changes for this label: 08_10_00 11233 11234Parser/Interpreter integration: Eliminated the creation of 11235complete parse trees for ACPI tables and control methods. 11236Instead, parse subtrees are created and then deleted as soon as 11237they are processed (Either entered into the namespace or executed 11238by the interpreter). This reduces the use of dynamic kernel 11239memory significantly. (about 10X) 11240 11241Exception codes broken into classes and renumbered. Be sure to 11242recompile all code that includes acexcep.h. Hopefully we won't 11243have to renumber the codes again now that they are split into 11244classes (environment, programmer, AML code, ACPI table, and 11245internal). 11246 11247Fixed some additional alignment issues in the Resource Manager 11248subcomponent 11249 11250Implemented semaphore tracking in the AcpiExec utility, and fixed 11251several places where mutexes/semaphores were being unlocked 11252without a corresponding lock operation. There are no known 11253semaphore or mutex "leaks" at this time. 11254 11255Fixed the case where an ASL Return operator is used to return an 11256unnamed package. 11257 11258------------------------------------------- 11259Summary of changes for this label: 07_28_00 11260 11261Fixed a problem with the way addresses were calculated in 11262AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem 11263manifested itself when a Field was created with WordAccess or 11264DwordAccess, but the field unit defined within the Field was less 11265 11266than a Word or Dword. 11267 11268Fixed a problem in AmlDumpOperands() module's loop to pull 11269operands off of the operand stack to display information. The 11270problem manifested itself as a TLB error on 64-bit systems when 11271accessing an operand stack with two or more operands. 11272 11273Fixed a problem with the PCI configuration space handlers where 11274context was getting confused between accesses. This required a 11275change to the generic address space handler and address space 11276setup definitions. Handlers now get both a global handler context 11277(this is the one passed in by the user when executing 11278AcpiInstallAddressSpaceHandler() and a specific region context 11279that is unique to each region (For example, the _ADR, _SEG and 11280_BBN values associated with a specific region). The generic 11281function definitions have changed to the following: 11282 11283typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function, 11284UINT32 Address, UINT32 BitWidth, UINT32 *Value, void 11285*HandlerContext, // This used to be void *Context void 11286*RegionContext); // This is an additional parameter 11287 11288typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE 11289RegionHandle, UINT32 Function, void *HandlerContext, void 11290**RegionContext); // This used to be **ReturnContext 11291 11292------------------------------------------- 11293Summary of changes for this label: 07_21_00 11294 11295Major file consolidation and rename. All files within the 11296interpreter have been renamed as well as most header files. This 11297was done to prevent collisions with existing files in the host 11298OSs -- filenames such as "config.h" and "global.h" seem to be 11299quite common. The VC project files have been updated. All 11300makefiles will require modification. 11301 11302The parser/interpreter integration continues in Phase 5 with the 11303implementation of a complete 2-pass parse (the AML is parsed 11304twice) for each table; This avoids the construction of a huge 11305parse tree and therefore reduces the amount of dynamic memory 11306required by the subsystem. Greater use of the parse object cache 11307means that performance is unaffected. 11308 11309Many comments from the two code reviews have been rolled in. 11310 11311The 64-bit alignment support is complete. 11312 11313------------------------------------------- 11314Summary of changes for this label: 06_30_00 11315 11316With a nod and a tip of the hat to the technology of yesteryear, 11317we've added support in the source code for 80 column output 11318devices. The code is now mostly constrained to 80 columns or 11319less to support environments and editors that 1) cannot display 11320or print more than 80 characters on a single line, and 2) cannot 11321disable line wrapping. 11322 11323A major restructuring of the namespace data structure has been 11324completed. The result is 1) cleaner and more 11325understandable/maintainable code, and 2) a significant reduction 11326in the dynamic memory requirement for each named ACPI object 11327(almost half). 11328 11329------------------------------------------- 11330Summary of changes for this label: 06_23_00 11331 11332Linux support has been added. In order to obtain approval to get 11333the ACPI CA subsystem into the Linux kernel, we've had to make 11334quite a few changes to the base subsystem that will affect all 11335users (all the changes are generic and OS- independent). The 11336effects of these global changes have been somewhat far reaching. 11337Files have been merged and/or renamed and interfaces have been 11338renamed. The major changes are described below. 11339 11340Osd* interfaces renamed to AcpiOs* to eliminate namespace 11341pollution/confusion within our target kernels. All OSD 11342interfaces must be modified to match the new naming convention. 11343 11344Files merged across the subsystem. A number of the smaller source 11345and header files have been merged to reduce the file count and 11346increase the density of the existing files. There are too many 11347to list here. In general, makefiles that call out individual 11348files will require rebuilding. 11349 11350Interpreter files renamed. All interpreter files now have the 11351prefix am* instead of ie* and is*. 11352 11353Header files renamed: The acapi.h file is now acpixf.h. The 11354acpiosd.h file is now acpiosxf.h. We are removing references to 11355the acronym "API" since it is somewhat windowsy. The new name is 11356"external interface" or xface or xf in the filenames.j 11357 11358 11359All manifest constants have been forced to upper case (some were 11360mixed case.) Also, the string "ACPI_" has been prepended to many 11361(not all) of the constants, typedefs, and structs. 11362 11363The globals "DebugLevel" and "DebugLayer" have been renamed 11364"AcpiDbgLevel" and "AcpiDbgLayer" respectively. 11365 11366All other globals within the subsystem are now prefixed with 11367"AcpiGbl_" Internal procedures within the subsystem are now 11368prefixed with "Acpi" (with only a few exceptions). The original 11369two-letter abbreviation for the subcomponent remains after "Acpi" 11370- for example, CmCallocate became AcpiCmCallocate. 11371 11372Added a source code translation/conversion utility. Used to 11373generate the Linux source code, it can be modified to generate 11374other types of source as well. Can also be used to cleanup 11375existing source by removing extraneous spaces and blank lines. 11376Found in tools/acpisrc/* 11377 11378OsdUnMapMemory was renamed to OsdUnmapMemory and then 11379AcpiOsUnmapMemory. (UnMap became Unmap). 11380 11381A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore. 11382When set to one, this indicates that the caller wants to use the 11383 11384semaphore as a mutex, not a counting semaphore. ACPI CA uses 11385both types. However, implementers of this call may want to use 11386different OS primitives depending on the type of semaphore 11387requested. For example, some operating systems provide separate 11388 11389"mutex" and "semaphore" interfaces - where the mutex interface is 11390much faster because it doesn't have all the overhead of a full 11391semaphore implementation. 11392 11393Fixed a deadlock problem where a method that accesses the PCI 11394address space can block forever if it is the first access to the 11395space. 11396 11397------------------------------------------- 11398Summary of changes for this label: 06_02_00 11399 11400Support for environments that cannot handle unaligned data 11401accesses (e.g. firmware and OS environments devoid of alignment 11402handler technology namely SAL/EFI and the IA-64 Linux kernel) has 11403been added (via configurable macros) in these three areas: - 11404Transfer of data from the raw AML byte stream is done via byte 11405moves instead of word/dword/qword moves. - External objects are 11406aligned within the user buffer, including package elements (sub- 11407objects). - Conversion of name strings to UINT32 Acpi Names is now 11408done byte-wise. 11409 11410The Store operator was modified to mimic Microsoft's 11411implementation when storing to a Buffer Field. 11412 11413Added a check of the BM_STS bit before entering C3. 11414 11415The methods subdirectory has been obsoleted and removed. A new 11416file, cmeval.c subsumes the functionality. 11417 11418A 16-bit (DOS) version of AcpiExec has been developed. The 11419makefile is under the acpiexec directory. 11420