1---------------------------------------- 223 November 2011. Summary of changes for version 20111123: 3 4This release is available at www.acpica.org/downloads 5The ACPI 5.0 specification is available at www.acpi.info 6 70) ACPI 5.0 Support: 8 9This release contains full support for the ACPI 5.0 specification, as 10summarized below. 11 12Reduced Hardware Support: 13------------------------- 14 15This support allows for ACPI systems without the usual ACPI hardware. This 16support is enabled by a flag in the revision 5 FADT. If it is set, ACPICA will 17not attempt to initialize or use any of the usual ACPI hardware. Note, when 18this flag is set, all of the following ACPI hardware is assumed to be not 19present and is not initialized or accessed: 20 21 General Purpose Events (GPEs) 22 Fixed Events (PM1a/PM1b and PM Control) 23 Power Management Timer and Console Buttons (power/sleep) 24 Real-time Clock Alarm 25 Global Lock 26 System Control Interrupt (SCI) 27 The FACS is assumed to be non-existent 28 29ACPI Tables: 30------------ 31 32All new tables and updates to existing tables are fully supported in the 33ACPICA headers (for use by device drivers), the disassembler, and the iASL 34Data Table Compiler. ACPI 5.0 defines these new tables: 35 36 BGRT /* Boot Graphics Resource Table */ 37 DRTM /* Dynamic Root of Trust for Measurement table */ 38 FPDT /* Firmware Performance Data Table */ 39 GTDT /* Generic Timer Description Table */ 40 MPST /* Memory Power State Table */ 41 PCCT /* Platform Communications Channel Table */ 42 PMTT /* Platform Memory Topology Table */ 43 RASF /* RAS Feature table */ 44 45Operation Regions/SpaceIDs: 46--------------------------- 47 48All new operation regions are fully supported by the iASL compiler, the 49disassembler, and the ACPICA runtime code (for dispatch to region handlers.) 50The new operation region Space IDs are: 51 52 GeneralPurposeIo 53 GenericSerialBus 54 55Resource Descriptors: 56--------------------- 57 58All new ASL resource descriptors are fully supported by the iASL compiler, the 59ASL/AML disassembler, and the ACPICA runtime Resource Manager code (including 60all new predefined resource tags). New descriptors are: 61 62 FixedDma 63 GpioIo 64 GpioInt 65 I2cSerialBus 66 SpiSerialBus 67 UartSerialBus 68 69ASL/AML Operators, New and Modified: 70------------------------------------ 71 72One new operator is added, the Connection operator, which is used to associate 73a GeneralPurposeIo or GenericSerialBus resource descriptor with individual 74field objects within an operation region. Several new protocols are associated 75with the AccessAs operator. All are fully supported by the iASL compiler, 76disassembler, and runtime ACPICA AML interpreter: 77 78 Connection // Declare Field Connection attributes 79 AccessAs: AttribBytes (n) // Read/Write N-Bytes Protocol 80 AccessAs: AttribRawBytes (n) // Raw Read/Write N-Bytes Protocol 81 AccessAs: AttribRawProcessBytes (n) // Raw Process Call Protocol 82 RawDataBuffer // Data type for Vendor Data fields 83 84Predefined ASL/AML Objects: 85--------------------------- 86 87All new predefined objects/control-methods are supported by the iASL compiler 88and the ACPICA runtime validation/repair (arguments and return values.) New 89predefined names include the following: 90 91Standard Predefined Names (Objects or Control Methods): 92 _AEI, _CLS, _CPC, _CWS, _DEP, 93 _DLM, _EVT, _GCP, _CRT, _GWS, 94 _HRV, _PRE, _PSE, _SRT, _SUB. 95 96Resource Tags (Names used to access individual fields within resource 97descriptors): 98 _DBT, _DPL, _DRS, _END, _FLC, 99 _IOR, _LIN, _MOD, _PAR, _PHA, 100 _PIN, _PPI, _POL, _RXL, _SLV, 101 _SPE, _STB, _TXL, _VEN. 102 103ACPICA External Interfaces: 104--------------------------- 105 106Several new interfaces have been defined for use by ACPI-related device 107drivers and other host OS services: 108 109AcpiAcquireMutex and AcpiReleaseMutex: These interfaces allow the host OS to 110acquire and release AML mutexes that are defined in the DSDT/SSDT tables 111provided by the BIOS. They are intended to be used in conjunction with the 112ACPI 5.0 _DLM (Device Lock Method) in order to provide transaction-level 113mutual exclusion with the AML code/interpreter. 114 115AcpiGetEventResources: Returns the (formatted) resource descriptors as defined 116by the ACPI 5.0 _AEI object (ACPI Event Information). This object provides 117resource descriptors associated with hardware-reduced platform events, similar 118to the AcpiGetCurrentResources interface. 119 120Operation Region Handlers: For General Purpose IO and Generic Serial Bus 121operation regions, information about the Connection() object and any optional 122length information is passed to the region handler within the Context 123parameter. 124 125AcpiBufferToResource: This interface converts a raw AML buffer containing a 126resource template or resource descriptor to the ACPI_RESOURCE internal format 127suitable for use by device drivers. Can be used by an operation region handler 128to convert the Connection() buffer object into a ACPI_RESOURCE. 129 130Miscellaneous/Tools/TestSuites: 131------------------------------- 132 133Support for extended _HID names (Four alpha characters instead of three). 134Support for ACPI 5.0 features in the AcpiExec and AcpiHelp utilities. 135Support for ACPI 5.0 features in the ASLTS test suite. 136Fully updated documentation (ACPICA and iASL reference documents.) 137 138ACPI Table Definition Language: 139------------------------------- 140 141Support for this language was implemented and released as a subsystem of the 142iASL compiler in 2010. (See the iASL compiler User Guide.) 143 144 145Non-ACPI 5.0 changes for this release: 146-------------------------------------- 147 1481) ACPICA Core Subsystem: 149 150Fix a problem with operation region declarations where a failure can occur if 151the region name and an argument that evaluates to an object (such as the 152region address) are in different namespace scopes. Lin Ming, ACPICA BZ 937. 153 154Do not abort an ACPI table load if an invalid space ID is found within. This 155will be caught later if the offending method is executed. ACPICA BZ 925. 156 157Fixed an issue with the FFixedHW space ID where the ID was not always 158recognized properly (Both ACPICA and iASL). ACPICA BZ 926. 159 160Fixed a problem with the 32-bit generation of the unix-specific OSL 161(osunixxf.c). Lin Ming, ACPICA BZ 936. 162 163Several changes made to enable generation with the GCC 4.6 compiler. ACPICA BZ 164935. 165 166New error messages: Unsupported I/O requests (not 8/16/32 bit), and Index/Bank 167field registers out-of-range. 168 1692) iASL Compiler/Disassembler and Tools: 170 171iASL: Implemented the __PATH__ operator, which returns the full pathname of 172the current source file. 173 174AcpiHelp: Automatically display expanded keyword information for all ASL 175operators. 176 177Debugger: Add "Template" command to disassemble/dump resource template 178buffers. 179 180Added a new master script to generate and execute the ASLTS test suite. 181Automatically handles 32- and 64-bit generation. See tests/aslts.sh 182 183iASL: Fix problem with listing generation during processing of the Switch() 184operator where AML listing was disabled until the entire Switch block was 185completed. 186 187iASL: Improve support for semicolon statement terminators. Fix "invalid 188character" message for some cases when the semicolon is used. Semicolons are 189now allowed after every <Term> grammar element. ACPICA BZ 927. 190 191iASL: Fixed some possible aliasing warnings during generation. ACPICA BZ 923. 192 193Disassembler: Fix problem with disassembly of the DataTableRegion operator 194where an inadvertent "Unhandled deferred opcode" message could be generated. 195 1963) Example Code and Data Size 197 198These are the sizes for the OS-independent acpica.lib produced by the 199Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code 200includes the debug output trace mechanism and has a much larger code and data 201size. 202 203 Previous Release: 204 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 205 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 206 Current Release: 207 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total 208 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total 209 210---------------------------------------- 21122 September 2011. Summary of changes for version 20110922: 212 2130) ACPI 5.0 News: 214 215Support for ACPI 5.0 in ACPICA has been underway for several months and will 216be released at the same time that ACPI 5.0 is officially released. 217 218The ACPI 5.0 specification is on track for release in the next few months. 219 2201) ACPICA Core Subsystem: 221 222Fixed a problem where the maximum sleep time for the Sleep() operator was 223intended to be limited to two seconds, but was inadvertently limited to 20 224seconds instead. 225 226Linux and Unix makefiles: Added header file dependencies to ensure correct 227generation of ACPICA core code and utilities. Also simplified the makefiles 228considerably through the use of the vpath variable to specify search paths. 229ACPICA BZ 924. 230 2312) iASL Compiler/Disassembler and Tools: 232 233iASL: Implemented support to check the access length for all fields created to 234access named Resource Descriptor fields. For example, if a resource field is 235defined to be two bits, a warning is issued if a CreateXxxxField() is used 236with an incorrect bit length. This is implemented for all current resource 237descriptor names. ACPICA BZ 930. 238 239Disassembler: Fixed a byte ordering problem with the output of 24-bit and 56- 240bit integers. 241 242iASL: Fixed a couple of issues associated with variable-length package 243objects. 1) properly handle constants like One, Ones, Zero -- do not make a 244VAR_PACKAGE when these are used as a package length. 2) Allow the VAR_PACKAGE 245opcode (in addition to PACKAGE) when validating object types for predefined 246names. 247 248iASL: Emit statistics for all output files (instead of just the ASL input and 249AML output). Includes listings, hex files, etc. 250 251iASL: Added -G option to the table compiler to allow the compilation of custom 252ACPI tables. The only part of a table that is required is the standard 36-byte 253ACPI header. 254 255AcpiXtract: Ported to the standard ACPICA environment (with ACPICA headers), 256which also adds correct 64-bit support. Also, now all output filenames are 257completely lower case. 258 259AcpiExec: Ignore any non-AML tables (tables other than DSDT or SSDT) when 260loading table files. A warning is issued for any such tables. The only 261exception is an FADT. This also fixes a possible fault when attempting to load 262non-AML tables. ACPICA BZ 932. 263 264AcpiHelp: Added the AccessAs and Offset operators. Fixed a problem where a 265missing table terminator could cause a fault when using the -p option. 266 267AcpiSrc: Fixed a possible divide-by-zero fault when generating file 268statistics. 269 2703) Example Code and Data Size 271 272These are the sizes for the OS-independent acpica.lib produced by the 273Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code 274includes the debug output trace mechanism and has a much larger code and data 275size. 276 277 Previous Release (VC 9.0): 278 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 279 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 280 Current Release (VC 9.0): 281 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 282 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 283 284 285---------------------------------------- 28623 June 2011. Summary of changes for version 20110623: 287 2881) ACPI CA Core Subsystem: 289 290Updated the predefined name repair mechanism to not attempt repair of a _TSS 291return object if a _PSS object is present. We can only sort the _TSS return 292package if there is no _PSS within the same scope. This is because if _PSS is 293present, the ACPI specification dictates that the _TSS Power Dissipation field 294is to be ignored, and therefore some BIOSs leave garbage values in the _TSS 295Power field(s). In this case, it is best to just return the _TSS package as- 296is. Reported by, and fixed with assistance from Fenghua Yu. 297 298Added an option to globally disable the control method return value validation 299and repair. This runtime option can be used to disable return value repair if 300this is causing a problem on a particular machine. Also added an option to 301AcpiExec (-dr) to set this disable flag. 302 303All makefiles and project files: Major changes to improve generation of ACPICA 304tools. ACPICA BZ 912: 305 Reduce default optimization levels to improve compatibility 306 For Linux, add strict-aliasing=0 for gcc 4 307 Cleanup and simplify use of command line defines 308 Cleanup multithread library support 309 Improve usage messages 310 311Linux-specific header: update handling of THREAD_ID and pthread. For the 32- 312bit case, improve casting to eliminate possible warnings, especially with the 313acpica tools. 314 315Example Code and Data Size: These are the sizes for the OS-independent 316acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug 317version of the code includes the debug output trace mechanism and has a much 318larger code and data size. 319 320 Previous Release (VC 9.0): 321 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total 322 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 323 Current Release (VC 9.0): 324 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 325 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 326 3272) iASL Compiler/Disassembler and Tools: 328 329With this release, a new utility named "acpihelp" has been added to the ACPICA 330package. This utility summarizes the ACPI specification chapters for the ASL 331and AML languages. It generates under Linux/Unix as well as Windows, and 332provides the following functionality: 333 Find/display ASL operator(s) -- with description and syntax. 334 Find/display ASL keyword(s) -- with exact spelling and descriptions. 335 Find/display ACPI predefined name(s) -- with description, number 336 of arguments, and the return value data type. 337 Find/display AML opcode name(s) -- with opcode, arguments, and grammar. 338 Decode/display AML opcode -- with opcode name, arguments, and grammar. 339 340Service Layers: Make multi-thread support configurable. Conditionally compile 341the multi-thread support so that threading libraries will not be linked if not 342necessary. The only tool that requires multi-thread support is AcpiExec. 343 344iASL: Update yyerrror/AslCompilerError for "const" errors. Newer versions of 345Bison appear to want the interface to yyerror to be a const char * (or at 346least this is a problem when generating iASL on some systems.) ACPICA BZ 923 347Pierre Lejeune. 348 349Tools: Fix for systems where O_BINARY is not defined. Only used for Windows 350versions of the tools. 351 352---------------------------------------- 35327 May 2011. Summary of changes for version 20110527: 354 3551) ACPI CA Core Subsystem: 356 357ASL Load() operator: Reinstate most restrictions on the incoming ACPI table 358signature. Now, only allow SSDT, OEMx, and a null signature. History: 359 1) Originally, we checked the table signature for "SSDT" or "PSDT". 360 (PSDT is now obsolete.) 361 2) We added support for OEMx tables, signature "OEM" plus a fourth 362 "don't care" character. 363 3) Valid tables were encountered with a null signature, so we just 364 gave up on validating the signature, (05/2008). 365 4) We encountered non-AML tables such as the MADT, which caused 366 interpreter errors and kernel faults. So now, we once again allow 367 only SSDT, OEMx, and now, also a null signature. (05/2011). 368 369Added the missing _TDL predefined name to the global name list in order to 370enable validation. Affects both the core ACPICA code and the iASL compiler. 371 372Example Code and Data Size: These are the sizes for the OS-independent 373acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug 374version of the code includes the debug output trace mechanism and has a much 375larger code and data size. 376 377 Previous Release (VC 9.0): 378 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total 379 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total 380 Current Release (VC 9.0): 381 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total 382 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 383 3842) iASL Compiler/Disassembler and Tools: 385 386Debugger/AcpiExec: Implemented support for "complex" method arguments on the 387debugger command line. This adds support beyond simple integers -- including 388Strings, Buffers, and Packages. Includes support for nested packages. 389Increased the default command line buffer size to accommodate these arguments. 390See the ACPICA reference for details and syntax. ACPICA BZ 917. 391 392Debugger/AcpiExec: Implemented support for "default" method arguments for the 393Execute/Debug command. Now, the debugger will always invoke a control method 394with the required number of arguments -- even if the command line specifies 395none or insufficient arguments. It uses default integer values for any missing 396arguments. Also fixes a bug where only six method arguments maximum were 397supported instead of the required seven. 398 399Debugger/AcpiExec: Add a maximum buffer length parameter to AcpiOsGetLine and 400also return status in order to prevent buffer overruns. See the ACPICA 401reference for details and syntax. ACPICA BZ 921 402 403iASL: Cleaned up support for Berkeley yacc. A general cleanup of code and 404makefiles to simplify support for the two different but similar parser 405generators, bison and yacc. 406 407Updated the generic unix makefile for gcc 4. The default gcc version is now 408expected to be 4 or greater, since options specific to gcc 4 are used. 409 410---------------------------------------- 41113 April 2011. Summary of changes for version 20110413: 412 4131) ACPI CA Core Subsystem: 414 415Implemented support to execute a so-called "orphan" _REG method under the EC 416device. This change will force the execution of a _REG method underneath the 417EC 418device even if there is no corresponding operation region of type 419EmbeddedControl. Fixes a problem seen on some machines and apparently is 420compatible with Windows behavior. ACPICA BZ 875. 421 422Added more predefined methods that are eligible for automatic NULL package 423element removal. This change adds another group of predefined names to the 424list 425of names that can be repaired by having NULL package elements dynamically 426removed. This group are those methods that return a single variable-length 427package containing simple data types such as integers, buffers, strings. This 428includes: _ALx, _BCL, _CID,_ DOD, _EDL, _FIX, _PCL, _PLD, _PMD, _PRx, _PSL, 429_Sx, 430and _TZD. ACPICA BZ 914. 431 432Split and segregated all internal global lock functions to a new file, 433evglock.c. 434 435Updated internal address SpaceID for DataTable regions. Moved this internal 436space 437id in preparation for ACPI 5.0 changes that will include some new space IDs. 438This 439change should not affect user/host code. 440 441Example Code and Data Size: These are the sizes for the OS-independent 442acpica.lib 443produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug version of 444the code includes the debug output trace mechanism and has a much larger code 445and 446data size. 447 448 Previous Release (VC 9.0): 449 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total 450 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total 451 Current Release (VC 9.0): 452 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total 453 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total 454 4552) iASL Compiler/Disassembler and Tools: 456 457iASL/DTC: Major update for new grammar features. Allow generic data types in 458custom ACPI tables. Field names are now optional. Any line can be split to 459multiple lines using the continuation char (\). Large buffers now use line- 460continuation character(s) and no colon on the continuation lines. See the 461grammar 462update in the iASL compiler reference. ACPI BZ 910,911. Lin Ming, Bob Moore. 463 464iASL: Mark ASL "Return()" and the simple "Return" as "Null" return statements. 465Since the parser stuffs a "zero" as the return value for these statements (due 466to 467the underlying AML grammar), they were seen as "return with value" by the iASL 468semantic checking. They are now seen correctly as "null" return statements. 469 470iASL: Check if a_REG declaration has a corresponding Operation Region. Adds a 471check for each _REG to ensure that there is in fact a corresponding operation 472region declaration in the same scope. If not, the _REG method is not very 473useful 474since it probably won't be executed. ACPICA BZ 915. 475 476iASL/DTC: Finish support for expression evaluation. Added a new expression 477parser 478that implements c-style operator precedence and parenthesization. ACPICA 479bugzilla 480908. 481 482Disassembler/DTC: Remove support for () and <> style comments in data tables. 483Now 484that DTC has full expression support, we don't want to have comment strings 485that 486start with a parentheses or a less-than symbol. Now, only the standard /* and 487// 488comments are supported, as well as the bracket [] comments. 489 490AcpiXtract: Fix for RSDP and dynamic SSDT extraction. These tables have 491"unusual" 492headers in the acpidump file. Update the header validation to support these 493tables. Problem introduced in previous AcpiXtract version in the change to 494support "wrong checksum" error messages emitted by acpidump utility. 495 496iASL: Add a * option to generate all template files (as a synonym for ALL) as 497in 498"iasl -T *" or "iasl -T ALL". 499 500iASL/DTC: Do not abort compiler on fatal errors. We do not want to completely 501abort the compiler on "fatal" errors, simply should abort the current compile. 502This allows multiple compiles with a single (possibly wildcard) compiler 503invocation. 504 505---------------------------------------- 50616 March 2011. Summary of changes for version 20110316: 507 5081) ACPI CA Core Subsystem: 509 510Fixed a problem caused by a _PRW method appearing at the namespace root scope 511during the setup of wake GPEs. A fault could occur if a _PRW directly under 512the 513root object was passed to the AcpiSetupGpeForWake interface. Lin Ming. 514 515Implemented support for "spurious" Global Lock interrupts. On some systems, a 516global lock interrupt can occur without the pending flag being set. Upon a GL 517interrupt, we now ensure that a thread is actually waiting for the lock before 518signaling GL availability. Rafael Wysocki, Bob Moore. 519 520Example Code and Data Size: These are the sizes for the OS-independent 521acpica.lib 522produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug version of 523the code includes the debug output trace mechanism and has a much larger code 524and 525data size. 526 527 Previous Release (VC 9.0): 528 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 529 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 530 Current Release (VC 9.0): 531 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total 532 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total 533 5342) iASL Compiler/Disassembler and Tools: 535 536Implemented full support for the "SLIC" ACPI table. Includes support in the 537header files, disassembler, table compiler, and template generator. Bob Moore, 538Lin Ming. 539 540AcpiXtract: Correctly handle embedded comments and messages from AcpiDump. 541Apparently some or all versions of acpidump will occasionally emit a comment 542like 543"Wrong checksum", etc., into the dump file. This was causing problems for 544AcpiXtract. ACPICA BZ 905. 545 546iASL: Fix the Linux makefile by removing an inadvertent double file inclusion. 547ACPICA BZ 913. 548 549AcpiExec: Update installation of operation region handlers. Install one 550handler 551for a user-defined address space. This is used by the ASL test suite (ASLTS). 552 553---------------------------------------- 55411 February 2011. Summary of changes for version 20110211: 555 5561) ACPI CA Core Subsystem: 557 558Added a mechanism to defer _REG methods for some early-installed handlers. 559Most user handlers should be installed before call to AcpiEnableSubsystem. 560However, Event handlers and region handlers should be installed after 561AcpiInitializeObjects. Override handlers for the "default" regions should be 562installed early, however. This change executes all _REG methods for the 563default regions (Memory/IO/PCI/DataTable) simultaneously to prevent any 564chicken/egg issues between them. ACPICA BZ 848. 565 566Implemented an optimization for GPE detection. This optimization will simply 567ignore GPE registers that contain no enabled GPEs -- there is no need to 568read the register since this information is available internally. This 569becomes more important on machines with a large GPE space. ACPICA bugzilla 570884. Lin Ming. Suggestion from Joe Liu. 571 572Removed all use of the highly unreliable FADT revision field. The revision 573number in the FADT has been found to be completely unreliable and cannot be 574trusted. Only the actual table length can be used to infer the version. This 575change updates the ACPICA core and the disassembler so that both no longer 576even look at the FADT version and instead depend solely upon the FADT 577length. 578 579Fix an unresolved name issue for the no-debug and no-error-message source 580generation cases. The _AcpiModuleName was left undefined in these cases, but 581it is actually needed as a parameter to some interfaces. Define 582_AcpiModuleName as a null string in these cases. ACPICA Bugzilla 888. 583 584Split several large files (makefiles and project files updated) 585 utglobal.c -> utdecode.c 586 dbcomds.c -> dbmethod.c dbnames.c 587 dsopcode.c -> dsargs.c dscontrol.c 588 dsload.c -> dsload2.c 589 aslanalyze.c -> aslbtypes.c aslwalks.c 590 591Example Code and Data Size: These are the sizes for the OS-independent 592acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 593debug version of the code includes the debug output trace mechanism and has 594a much larger code and data size. 595 596 Previous Release (VC 9.0): 597 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 598 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 599 Current Release (VC 9.0): 600 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 601 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 602 6032) iASL Compiler/Disassembler and Tools: 604 605iASL: Implemented the predefined macros __LINE__, __FILE__, and __DATE__. 606These are useful C-style macros with the standard definitions. ACPICA 607bugzilla 898. 608 609iASL/DTC: Added support for integer expressions and labels. Support for full 610expressions for all integer fields in all ACPI tables. Support for labels in 611"generic" portions of tables such as UEFI. See the iASL reference manual. 612 613Debugger: Added a command to display the status of global handlers. The 614"handlers" command will display op region, fixed event, and miscellaneous 615global handlers. installation status -- and for op regions, whether default 616or user-installed handler will be used. 617 618iASL: Warn if reserved method incorrectly returns a value. Many predefined 619names are defined such that they do not return a value. If implemented as a 620method, issue a warning if such a name explicitly returns a value. ACPICA 621Bugzilla 855. 622 623iASL: Added detection of GPE method name conflicts. Detects a conflict where 624there are two GPE methods of the form _Lxy and _Exy in the same scope. (For 625example, _L1D and _E1D in the same scope.) ACPICA bugzilla 848. 626 627iASL/DTC: Fixed a couple input scanner issues with comments and line 628numbers. Comment remover could get confused and miss a comment ending. Fixed 629a problem with line counter maintenance. 630 631iASL/DTC: Reduced the severity of some errors from fatal to error. There is 632no need to abort on simple errors within a field definition. 633 634Debugger: Simplified the output of the help command. All help output now in 635a single screen, instead of help subcommands. ACPICA Bugzilla 897. 636 637---------------------------------------- 63812 January 2011. Summary of changes for version 20110112: 639 6401) ACPI CA Core Subsystem: 641 642Fixed a race condition between method execution and namespace walks that can 643possibly cause a fault. The problem was apparently introduced in version 64420100528 as a result of a performance optimization that reduces the number of 645namespace walks upon method exit by using the delete_namespace_subtree 646function instead of the delete_namespace_by_owner function used previously. 647Bug is a missing namespace lock in the delete_namespace_subtree function. 648dana.myers@oracle.com 649 650Fixed several issues and a possible fault with the automatic "serialized" 651method support. History: This support changes a method to "serialized" on the 652fly if the method generates an AE_ALREADY_EXISTS error, indicating the 653possibility that it cannot handle reentrancy. This fix repairs a couple of 654issues seen in the field, especially on machines with many cores: 655 656 1) Delete method children only upon the exit of the last thread, 657 so as to not delete objects out from under other running threads 658 (and possibly causing a fault.) 659 2) Set the "serialized" bit for the method only upon the exit of the 660 Last thread, so as to not cause deadlock when running threads 661 attempt to exit. 662 3) Cleanup the use of the AML "MethodFlags" and internal method flags 663 so that there is no longer any confusion between the two. 664 665 Lin Ming, Bob Moore. Reported by dana.myers@oracle.com. 666 667Debugger: Now lock the namespace for duration of a namespace dump. Prevents 668issues if the namespace is changing dynamically underneath the debugger. 669Especially affects temporary namespace nodes, since the debugger displays 670these also. 671 672Updated the ordering of include files. The ACPICA headers should appear 673before any compiler-specific headers (stdio.h, etc.) so that acenv.h can set 674any necessary compiler-specific defines, etc. Affects the ACPI-related tools 675and utilities. 676 677Updated all ACPICA copyrights and signons to 2011. Added the 2011 copyright 678to all module headers and signons, including the Linux header. This affects 679virtually every file in the ACPICA core subsystem, iASL compiler, and all 680utilities. 681 682Added project files for MS Visual Studio 2008 (VC++ 9.0). The original 683project files for VC++ 6.0 are now obsolete. New project files can be found 684under acpica/generate/msvc9. See acpica/generate/msvc9/readme.txt for 685details. 686 687Example Code and Data Size: These are the sizes for the OS-independent 688acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 689debug version of the code includes the debug output trace mechanism and has a 690much larger code and data size. 691 692 Previous Release (VC 6.0): 693 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total 694 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total 695 Current Release (VC 9.0): 696 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 697 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 698 6992) iASL Compiler/Disassembler and Tools: 700 701iASL: Added generic data types to the Data Table compiler. Add "generic" data 702types such as UINT32, String, Unicode, etc., to simplify the generation of 703platform-defined tables such as UEFI. Lin Ming. 704 705iASL: Added listing support for the Data Table Compiler. Adds listing support 706(-l) to display actual binary output for each line of input code. 707 708---------------------------------------- 70909 December 2010. Summary of changes for version 20101209: 710 7111) ACPI CA Core Subsystem: 712 713Completed the major overhaul of the GPE support code that was begun in July 7142010. Major features include: removal of _PRW execution in ACPICA (host 715executes _PRWs anyway), cleanup of "wake" GPE interfaces and processing, 716changes to existing interfaces, simplification of GPE handler operation, and 717a handful of new interfaces: 718 719 AcpiUpdateAllGpes 720 AcpiFinishGpe 721 AcpiSetupGpeForWake 722 AcpiSetGpeWakeMask 723 One new file, evxfgpe.c to consolidate all external GPE interfaces. 724 725See the ACPICA Programmer Reference for full details and programming 726information. See the new section 4.4 "General Purpose Event (GPE) Support" 727for a full overview, and section 8.7 "ACPI General Purpose Event Management" 728for programming details. ACPICA BZ 858,870,877. Matthew Garrett, Lin Ming, 729Bob Moore, Rafael Wysocki. 730 731Implemented a new GPE feature for Windows compatibility, the "Implicit Wake 732GPE Notify". This feature will automatically issue a Notify(2) on a device 733when a Wake GPE is received if there is no corresponding GPE method or 734handler. ACPICA BZ 870. 735 736Fixed a problem with the Scope() operator during table parse and load phase. 737During load phase (table load or method execution), the scope operator should 738not enter the target into the namespace. Instead, it should open a new scope 739at the target location. Linux BZ 19462, ACPICA BZ 882. 740 741Example Code and Data Size: These are the sizes for the OS-independent 742acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 743debug version of the code includes the debug output trace mechanism and has a 744much larger code and data size. 745 746 Previous Release: 747 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total 748 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total 749 Current Release: 750 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 751 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 752 7532) iASL Compiler/Disassembler and Tools: 754 755iASL: Relax the alphanumeric restriction on _CID strings. These strings are 756"bus-specific" per the ACPI specification, and therefore any characters are 757acceptable. The only checks that can be performed are for a null string and 758perhaps for a leading asterisk. ACPICA BZ 886. 759 760iASL: Fixed a problem where a syntax error that caused a premature EOF 761condition on the source file emitted a very confusing error message. The 762premature EOF is now detected correctly. ACPICA BZ 891. 763 764Disassembler: Decode the AccessSize within a Generic Address Structure (byte 765access, word access, etc.) Note, this field does not allow arbitrary bit 766access, the size is encoded as 1=byte, 2=word, 3=dword, and 4=qword. 767 768New: AcpiNames utility - Example namespace dump utility. Shows an example of 769ACPICA configuration for a minimal namespace dump utility. Uses table and 770namespace managers, but no AML interpreter. Does not add any functionality 771over AcpiExec, it is a subset of AcpiExec. The purpose is to show how to 772partition and configure ACPICA. ACPICA BZ 883. 773 774AML Debugger: Increased the debugger buffer size for method return objects. 775Was 4K, increased to 16K. Also enhanced error messages for debugger method 776execution, including the buffer overflow case. 777 778---------------------------------------- 77913 October 2010. Summary of changes for version 20101013: 780 7811) ACPI CA Core Subsystem: 782 783Added support to clear the PCIEXP_WAKE event. When clearing ACPI events, now 784clear the PCIEXP_WAKE_STS bit in the ACPI PM1 Status Register, via 785HwClearAcpiStatus. Original change from Colin King. ACPICA BZ 880. 786 787Changed the type of the predefined namespace object _TZ from ThermalZone to 788Device. This was found to be confusing to the host software that processes 789the various thermal zones, since _TZ is not really a ThermalZone. However, a 790Notify() can still be performed on it. ACPICA BZ 876. Suggestion from Rui 791Zhang. 792 793Added Windows Vista SP2 to the list of supported _OSI strings. The actual 794string is "Windows 2006 SP2". 795 796Eliminated duplicate code in AcpiUtExecute* functions. Now that the nsrepair 797code automatically repairs _HID-related strings, this type of code is no 798longer needed in Execute_HID, Execute_CID, and Execute_UID. ACPICA BZ 878. 799 800Example Code and Data Size: These are the sizes for the OS-independent 801acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 802debug version of the code includes the debug output trace mechanism and has a 803much larger code and data size. 804 805 Previous Release: 806 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 807 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 808 Current Release: 809 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 810 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 811 8122) iASL Compiler/Disassembler and Tools: 813 814iASL: Implemented additional compile-time validation for _HID strings. The 815non-hex prefix (such as "PNP" or "ACPI") must be uppercase, and the length of 816the string must be exactly seven or eight characters. For both _HID and _CID 817strings, all characters must be alphanumeric. ACPICA BZ 874. 818 819iASL: Allow certain "null" resource descriptors. Some BIOS code creates 820descriptors that are mostly or all zeros, with the expectation that they will 821be filled in at runtime. iASL now allows this as long as there is a "resource 822tag" (name) associated with the descriptor, which gives the ASL a handle 823needed to modify the descriptor. ACPICA BZ 873. 824 825Added single-thread support to the generic Unix application OSL. Primarily 826for iASL support, this change removes the use of semaphores in the single- 827threaded ACPICA tools/applications - increasing performance. The 828_MULTI_THREADED option was replaced by the (reverse) ACPI_SINGLE_THREADED 829option. ACPICA BZ 879. 830 831AcpiExec: several fixes for the 64-bit version. Adds XSDT support and support 832for 64-bit DSDT/FACS addresses in the FADT. Lin Ming. 833 834iASL: Moved all compiler messages to a new file, aslmessages.h. 835 836---------------------------------------- 83715 September 2010. Summary of changes for version 20100915: 838 8391) ACPI CA Core Subsystem: 840 841Removed the AcpiOsDerivePciId OSL interface. The various host implementations 842of this function were not OS-dependent and are now obsolete and can be 843removed from all host OSLs. This function has been replaced by 844AcpiHwDerivePciId, which is now part of the ACPICA core code. 845AcpiHwDerivePciId has been implemented without recursion. Adds one new 846module, hwpci.c. ACPICA BZ 857. 847 848Implemented a dynamic repair for _HID and _CID strings. The following 849problems are now repaired at runtime: 1) Remove a leading asterisk in the 850string, and 2) the entire string is uppercased. Both repairs are in 851accordance with the ACPI specification and will simplify host driver code. 852ACPICA BZ 871. 853 854The ACPI_THREAD_ID type is no longer configurable, internally it is now 855always UINT64. This simplifies the ACPICA code, especially any printf output. 856UINT64 is the only common data type for all thread_id types across all 857operating systems. It is now up to the host OSL to cast the native thread_id 858type to UINT64 before returning the value to ACPICA (via AcpiOsGetThreadId). 859Lin Ming, Bob Moore. 860 861Added the ACPI_INLINE type to enhance the ACPICA configuration. The "inline" 862keyword is not standard across compilers, and this type allows inline to be 863configured on a per-compiler basis. Lin Ming. 864 865Made the system global AcpiGbl_SystemAwakeAndRunning publically available. 866Added an extern for this boolean in acpixf.h. Some hosts utilize this value 867during suspend/restore operations. ACPICA BZ 869. 868 869All code that implements error/warning messages with the "ACPI:" prefix has 870been moved to a new module, utxferror.c. 871 872The UINT64_OVERLAY was moved to utmath.c, which is the only module where it 873is used. ACPICA BZ 829. Lin Ming, Bob Moore. 874 875Example Code and Data Size: These are the sizes for the OS-independent 876acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 877debug version of the code includes the debug output trace mechanism and has a 878much larger code and data size. 879 880 Previous Release: 881 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total 882 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total 883 Current Release: 884 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 885 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 886 8872) iASL Compiler/Disassembler and Tools: 888 889iASL/Disassembler: Write ACPI errors to stderr instead of the output file. 890This keeps the output files free of random error messages that may originate 891from within the namespace/interpreter code. Used this opportunity to merge 892all ACPI:-style messages into a single new module, utxferror.c. ACPICA BZ 893866. Lin Ming, Bob Moore. 894 895Tools: update some printfs for ansi warnings on size_t. Handle width change 896of size_t on 32-bit versus 64-bit generations. Lin Ming. 897 898---------------------------------------- 89906 August 2010. Summary of changes for version 20100806: 900 9011) ACPI CA Core Subsystem: 902 903Designed and implemented a new host interface to the _OSI support code. This 904will allow the host to dynamically add or remove multiple _OSI strings, as 905well as install an optional handler that is called for each _OSI invocation. 906Also added a new AML debugger command, 'osi' to display and modify the global 907_OSI string table, and test support in the AcpiExec utility. See the ACPICA 908reference manual for full details. Lin Ming, Bob Moore. ACPICA BZ 836. 909New Functions: 910 AcpiInstallInterface - Add an _OSI string. 911 AcpiRemoveInterface - Delete an _OSI string. 912 AcpiInstallInterfaceHandler - Install optional _OSI handler. 913Obsolete Functions: 914 AcpiOsValidateInterface - no longer used. 915New Files: 916 source/components/utilities/utosi.c 917 918Re-introduced the support to enable multi-byte transfers for Embedded 919Controller (EC) operation regions. A reported problem was found to be a bug 920in the host OS, not in the multi-byte support. Previously, the maximum data 921size passed to the EC operation region handler was a single byte. There are 922often EC Fields larger than one byte that need to be transferred, and it is 923useful for the EC driver to lock these as a single transaction. This change 924enables single transfers larger than 8 bits. This effectively changes the 925access to the EC space from ByteAcc to AnyAcc, and will probably require 926changes to the host OS Embedded Controller driver to enable 16/32/64/256-bit 927transfers in addition to 8-bit transfers. Alexey Starikovskiy, Lin Ming. 928 929Fixed a problem with the prototype for AcpiOsReadPciConfiguration. The 930prototype in acpiosxf.h had the output value pointer as a (void *). 931It should be a (UINT64 *). This may affect some host OSL code. 932 933Fixed a couple problems with the recently modified Linux makefiles for iASL 934and AcpiExec. These new makefiles place the generated object files in the 935local directory so that there can be no collisions between the files that are 936shared between them that are compiled with different options. 937 938Example Code and Data Size: These are the sizes for the OS-independent 939acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 940debug version of the code includes the debug output trace mechanism and has a 941much larger code and data size. 942 943 Previous Release: 944 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 945 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total 946 Current Release: 947 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total 948 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total 949 9502) iASL Compiler/Disassembler and Tools: 951 952iASL/Disassembler: Added a new option (-da, "disassemble all") to load the 953namespace from and disassemble an entire group of AML files. Useful for 954loading all of the AML tables for a given machine (DSDT, SSDT1...SSDTn) and 955disassembling with one simple command. ACPICA BZ 865. Lin Ming. 956 957iASL: Allow multiple invocations of -e option. This change allows multiple 958uses of -e on the command line: "-e ssdt1.dat -e ssdt2.dat". ACPICA BZ 834. 959Lin Ming. 960 961---------------------------------------- 96202 July 2010. Summary of changes for version 20100702: 963 9641) ACPI CA Core Subsystem: 965 966Implemented several updates to the recently added GPE reference count 967support. The model for "wake" GPEs is changing to give the host OS complete 968control of these GPEs. Eventually, the ACPICA core will not execute any _PRW 969methods, since the host already must execute them. Also, additional changes 970were made to help ensure that the reference counts are kept in proper 971synchronization with reality. Rafael J. Wysocki. 972 9731) Ensure that GPEs are not enabled twice during initialization. 9742) Ensure that GPE enable masks stay in sync with the reference count. 9753) Do not inadvertently enable GPEs when writing GPE registers. 9764) Remove the internal wake reference counter and add new AcpiGpeWakeup 977interface. This interface will set or clear individual GPEs for wakeup. 9785) Remove GpeType argument from AcpiEnable and AcpiDisable. These interfaces 979are now used for "runtime" GPEs only. 980 981Changed the behavior of the GPE install/remove handler interfaces. The GPE is 982no longer disabled during this process, as it was found to cause problems on 983some machines. Rafael J. Wysocki. 984 985Reverted a change introduced in version 20100528 to enable Embedded 986Controller multi-byte transfers. This change was found to cause problems with 987Index Fields and possibly Bank Fields. It will be reintroduced when these 988problems have been resolved. 989 990Fixed a problem with references to Alias objects within Package Objects. A 991reference to an Alias within the definition of a Package was not always 992resolved properly. Aliases to objects like Processors, Thermal zones, etc. 993were resolved to the actual object instead of a reference to the object as it 994should be. Package objects are only allowed to contain integer, string, 995buffer, package, and reference objects. Redhat bugzilla 608648. 996 997Example Code and Data Size: These are the sizes for the OS-independent 998acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 999debug version of the code includes the debug output trace mechanism and has a 1000much larger code and data size. 1001 1002 Previous Release: 1003 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 1004 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total 1005 Current Release: 1006 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 1007 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total 1008 10092) iASL Compiler/Disassembler and Tools: 1010 1011iASL: Implemented a new compiler subsystem to allow definition and 1012compilation of the non-AML ACPI tables such as FADT, MADT, SRAT, etc. These 1013are called "ACPI Data Tables", and the new compiler is the "Data Table 1014Compiler". This compiler is intended to simplify the existing error-prone 1015process of creating these tables for the BIOS, as well as allowing the 1016disassembly, modification, recompilation, and override of existing ACPI data 1017tables. See the iASL User Guide for detailed information. 1018 1019iASL: Implemented a new Template Generator option in support of the new Data 1020Table Compiler. This option will create examples of all known ACPI tables 1021that can be used as the basis for table development. See the iASL 1022documentation and the -T option. 1023 1024Disassembler and headers: Added support for the WDDT ACPI table (Watchdog 1025Descriptor Table). 1026 1027Updated the Linux makefiles for iASL and AcpiExec to place the generated 1028object files in the local directory so that there can be no collisions 1029between the shared files between them that are generated with different 1030options. 1031 1032Added support for Mac OS X in the Unix OSL used for iASL and AcpiExec. Use 1033the #define __APPLE__ to enable this support. 1034 1035---------------------------------------- 103628 May 2010. Summary of changes for version 20100528: 1037 1038Note: The ACPI 4.0a specification was released on April 5, 2010 and is 1039available at www.acpi.info. This is primarily an errata release. 1040 10411) ACPI CA Core Subsystem: 1042 1043Undefined ACPI tables: We are looking for the definitions for the following 1044ACPI tables that have been seen in the field: ATKG, IEIT, GSCI. 1045 1046Implemented support to enable multi-byte transfers for Embedded Controller 1047(EC) operation regions. Previously, the maximum data size passed to the EC 1048operation region handler was a single byte. There are often EC Fields larger 1049than one byte that need to be transferred, and it is useful for the EC driver 1050to lock these as a single transaction. This change enables single transfers 1051larger than 8 bits. This effectively changes the access to the EC space from 1052ByteAcc to AnyAcc, and will probably require changes to the host OS Embedded 1053Controller driver to enable 16/32/64/256-bit transfers in addition to 8-bit 1054transfers. Alexey Starikovskiy, Lin Ming 1055 1056Implemented a performance enhancement for namespace search and access. This 1057change enhances the performance of namespace searches and walks by adding a 1058backpointer to the parent in each namespace node. On large namespaces, this 1059change can improve overall ACPI performance by up to 9X. Adding a pointer to 1060each namespace node increases the overall size of the internal namespace by 1061about 5%, since each namespace entry usually consists of both a namespace 1062node and an ACPI operand object. However, this is the first growth of the 1063namespace in ten years. ACPICA bugzilla 817. Alexey Starikovskiy. 1064 1065Implemented a performance optimization that reduces the number of namespace 1066walks. On control method exit, only walk the namespace if the method is known 1067to have created namespace objects outside of its local scope. Previously, the 1068entire namespace was traversed on each control method exit. This change can 1069improve overall ACPI performance by up to 3X. Alexey Starikovskiy, Bob Moore. 1070 1071Added support to truncate I/O addresses to 16 bits for Windows compatibility. 1072Some ASL code has been seen in the field that inadvertently has bits set 1073above bit 15. This feature is optional and is enabled if the BIOS requests 1074any Windows OSI strings. It can also be enabled by the host OS. Matthew 1075Garrett, Bob Moore. 1076 1077Added support to limit the maximum time for the ASL Sleep() operator. To 1078prevent accidental deep sleeps, limit the maximum time that Sleep() will 1079actually sleep. Configurable, the default maximum is two seconds. ACPICA 1080bugzilla 854. 1081 1082Added run-time validation support for the _WDG and_WED Microsoft predefined 1083methods. These objects are defined by "Windows Instrumentation", and are not 1084part of the ACPI spec. ACPICA BZ 860. 1085 1086Expanded all statistic counters used during namespace and device 1087initialization from 16 to 32 bits in order to support very large namespaces. 1088 1089Replaced all instances of %d in printf format specifiers with %u since nearly 1090all integers in ACPICA are unsigned. 1091 1092Fixed the exception namestring for AE_WAKE_ONLY_GPE. Was incorrectly returned 1093as AE_NO_HANDLER. 1094 1095Example Code and Data Size: These are the sizes for the OS-independent 1096acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1097debug version of the code includes the debug output trace mechanism and has a 1098much larger code and data size. 1099 1100 Previous Release: 1101 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total 1102 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total 1103 Current Release: 1104 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 1105 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total 1106 11072) iASL Compiler/Disassembler and Tools: 1108 1109iASL: Added compiler support for the _WDG and_WED Microsoft predefined 1110methods. These objects are defined by "Windows Instrumentation", and are not 1111part of the ACPI spec. ACPICA BZ 860. 1112 1113AcpiExec: added option to disable the memory tracking mechanism. The -dt 1114option will disable the tracking mechanism, which improves performance 1115considerably. 1116 1117AcpiExec: Restructured the command line options into -d (disable) and -e 1118(enable) options. 1119 1120---------------------------------------- 112128 April 2010. Summary of changes for version 20100428: 1122 11231) ACPI CA Core Subsystem: 1124 1125Implemented GPE support for dynamically loaded ACPI tables. For all GPEs, 1126including FADT-based and GPE Block Devices, execute any _PRW methods in the 1127new table, and process any _Lxx/_Exx GPE methods in the new table. Any 1128runtime GPE that is referenced by an _Lxx/_Exx method in the new table is 1129immediately enabled. Handles the FADT-defined GPEs as well as GPE Block 1130Devices. Provides compatibility with other ACPI implementations. Two new 1131files added, evgpeinit.c and evgpeutil.c. ACPICA BZ 833. Lin Ming, Bob Moore. 1132 1133Fixed a regression introduced in version 20100331 within the table manager 1134where initial table loading could fail. This was introduced in the fix for 1135AcpiReallocateRootTable. Also, renamed some of fields in the table manager 1136data structures to clarify their meaning and use. 1137 1138Fixed a possible allocation overrun during internal object copy in 1139AcpiUtCopySimpleObject. The original code did not correctly handle the case 1140where the object to be copied was a namespace node. Lin Ming. ACPICA BZ 847. 1141 1142Updated the allocation dump routine, AcpiUtDumpAllocation and fixed a 1143possible access beyond end-of-allocation. Also, now fully validate descriptor 1144(size and type) before output. Lin Ming, Bob Moore. ACPICA BZ 847 1145 1146Example Code and Data Size: These are the sizes for the OS-independent 1147acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1148debug version of the code includes the debug output trace mechanism and has a 1149much larger code and data size. 1150 1151 Previous Release: 1152 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total 1153 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total 1154 Current Release: 1155 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total 1156 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total 1157 11582) iASL Compiler/Disassembler and Tools: 1159 1160iASL: Implemented Min/Max/Len/Gran validation for address resource 1161descriptors. This change implements validation for the address fields that 1162are common to all address-type resource descriptors. These checks are 1163implemented: Checks for valid Min/Max, length within the Min/Max window, 1164valid granularity, Min/Max a multiple of granularity, and _MIF/_MAF as per 1165table 6-40 in the ACPI 4.0a specification. Also split the large aslrestype1.c 1166and aslrestype2.c files into five new files. ACPICA BZ 840. 1167 1168iASL: Added support for the _Wxx predefined names. This support was missing 1169and these names were not recognized by the compiler as valid predefined 1170names. ACPICA BZ 851. 1171 1172iASL: Added an error for all predefined names that are defined to return no 1173value and thus must be implemented as Control Methods. These include all of 1174the _Lxx, _Exx, _Wxx, and _Qxx names, as well as some other miscellaneous 1175names such as _DIS, _INI, _IRC, _OFF, _ON, and _PSx. ACPICA BZ 850, 856. 1176 1177iASL: Implemented the -ts option to emit hex AML data in ASL format, as an 1178ASL Buffer. Allows ACPI tables to be easily included within ASL files, to be 1179dynamically loaded via the Load() operator. Also cleaned up output for the - 1180ta and -tc options. ACPICA BZ 853. 1181 1182Tests: Added a new file with examples of extended iASL error checking. 1183Demonstrates the advanced error checking ability of the iASL compiler. 1184Available at tests/misc/badcode.asl. 1185 1186---------------------------------------- 118731 March 2010. Summary of changes for version 20100331: 1188 11891) ACPI CA Core Subsystem: 1190 1191Completed a major update for the GPE support in order to improve support for 1192shared GPEs and to simplify both host OS and ACPICA code. Added a reference 1193count mechanism to support shared GPEs that require multiple device drivers. 1194Several external interfaces have changed. One external interface has been 1195removed. One new external interface was added. Most of the GPE external 1196interfaces now use the GPE spinlock instead of the events mutex (and the 1197Flags parameter for many GPE interfaces has been removed.) See the updated 1198ACPICA Programmer Reference for details. Matthew Garrett, Bob Moore, Rafael 1199Wysocki. ACPICA BZ 831. 1200 1201Changed: 1202 AcpiEnableGpe, AcpiDisableGpe, AcpiClearGpe, AcpiGetGpeStatus 1203Removed: 1204 AcpiSetGpeType 1205New: 1206 AcpiSetGpe 1207 1208Implemented write support for DataTable operation regions. These regions are 1209defined via the DataTableRegion() operator. Previously, only read support was 1210implemented. The ACPI specification allows DataTableRegions to be read/write, 1211however. 1212 1213Implemented a new subsystem option to force a copy of the DSDT to local 1214memory. Optionally copy the entire DSDT to local memory (instead of simply 1215mapping it.) There are some (albeit very rare) BIOSs that corrupt or replace 1216the original DSDT, creating the need for this option. Default is FALSE, do 1217not copy the DSDT. 1218 1219Implemented detection of a corrupted or replaced DSDT. This change adds 1220support to detect a DSDT that has been corrupted and/or replaced from outside 1221the OS (by firmware). This is typically catastrophic for the system, but has 1222been seen on some machines. Once this problem has been detected, the DSDT 1223copy option can be enabled via system configuration. Lin Ming, Bob Moore. 1224 1225Fixed two problems with AcpiReallocateRootTable during the root table copy. 1226When copying the root table to the new allocation, the length used was 1227incorrect. The new size was used instead of the current table size, meaning 1228too much data was copied. Also, the count of available slots for ACPI tables 1229was not set correctly. Alexey Starikovskiy, Bob Moore. 1230 1231Example Code and Data Size: These are the sizes for the OS-independent 1232acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1233debug version of the code includes the debug output trace mechanism and has a 1234much larger code and data size. 1235 1236 Previous Release: 1237 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total 1238 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total 1239 Current Release: 1240 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total 1241 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total 1242 12432) iASL Compiler/Disassembler and Tools: 1244 1245iASL: Implement limited typechecking for values returned from predefined 1246control methods. The type of any returned static (unnamed) object is now 1247validated. For example, Return(1). ACPICA BZ 786. 1248 1249iASL: Fixed a predefined name object verification regression. Fixes a problem 1250introduced in version 20100304. An error is incorrectly generated if a 1251predefined name is declared as a static named object with a value defined 1252using the keywords "Zero", "One", or "Ones". Lin Ming. 1253 1254iASL: Added Windows 7 support for the -g option (get local ACPI tables) by 1255reducing the requested registry access rights. ACPICA BZ 842. 1256 1257Disassembler: fixed a possible fault when generating External() statements. 1258Introduced in commit ae7d6fd: Properly handle externals with parent-prefix 1259(carat). Fixes a string length allocation calculation. Lin Ming. 1260 1261---------------------------------------- 126204 March 2010. Summary of changes for version 20100304: 1263 12641) ACPI CA Core Subsystem: 1265 1266Fixed a possible problem with the AML Mutex handling function 1267AcpiExReleaseMutex where the function could fault under the very rare 1268condition when the interpreter has blocked, the interpreter lock is released, 1269the interpreter is then reentered via the same thread, and attempts to 1270acquire an AML mutex that was previously acquired. FreeBSD report 140979. Lin 1271Ming. 1272 1273Implemented additional configuration support for the AML "Debug Object". 1274Output from the debug object can now be enabled via a global variable, 1275AcpiGbl_EnableAmlDebugObject. This will assist with remote machine debugging. 1276This debug output is now available in the release version of ACPICA instead 1277of just the debug version. Also, the entire debug output module can now be 1278configured out of the ACPICA build if desired. One new file added, 1279executer/exdebug.c. Lin Ming, Bob Moore. 1280 1281Added header support for the ACPI MCHI table (Management Controller Host 1282Interface Table). This table was added in ACPI 4.0, but the defining document 1283has only recently become available. 1284 1285Standardized output of integer values for ACPICA warnings/errors. Always use 12860x prefix for hex output, always use %u for unsigned integer decimal output. 1287Affects ACPI_INFO, ACPI_ERROR, ACPI_EXCEPTION, and ACPI_WARNING (about 400 1288invocations.) These invocations were converted from the original 1289ACPI_DEBUG_PRINT invocations and were not consistent. ACPICA BZ 835. 1290 1291Example Code and Data Size: These are the sizes for the OS-independent 1292acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1293debug version of the code includes the debug output trace mechanism and has a 1294much larger code and data size. 1295 1296 Previous Release: 1297 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total 1298 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total 1299 Current Release: 1300 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total 1301 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total 1302 13032) iASL Compiler/Disassembler and Tools: 1304 1305iASL: Implemented typechecking support for static (non-control method) 1306predefined named objects that are declared with the Name() operator. For 1307example, the type of this object is now validated to be of type Integer: 1308Name(_BBN, 1). This change migrates the compiler to using the core predefined 1309name table instead of maintaining a local version. Added a new file, 1310aslpredef.c. ACPICA BZ 832. 1311 1312Disassembler: Added support for the ACPI 4.0 MCHI table. 1313 1314---------------------------------------- 131521 January 2010. Summary of changes for version 20100121: 1316 13171) ACPI CA Core Subsystem: 1318 1319Added the 2010 copyright to all module headers and signons. This affects 1320virtually every file in the ACPICA core subsystem, the iASL compiler, the 1321tools/utilities, and the test suites. 1322 1323Implemented a change to the AcpiGetDevices interface to eliminate unnecessary 1324invocations of the _STA method. In the case where a specific _HID is 1325requested, do not run _STA until a _HID match is found. This eliminates 1326potentially dozens of _STA calls during a search for a particular device/HID, 1327which in turn can improve boot times. ACPICA BZ 828. Lin Ming. 1328 1329Implemented an additional repair for predefined method return values. Attempt 1330to repair unexpected NULL elements within returned Package objects. Create an 1331Integer of value zero, a NULL String, or a zero-length Buffer as appropriate. 1332ACPICA BZ 818. Lin Ming, Bob Moore. 1333 1334Removed the obsolete ACPI_INTEGER data type. This type was introduced as the 1335code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0 (with 133664-bit AML integers). It is now obsolete and this change removes it from the 1337ACPICA code base, replaced by UINT64. The original typedef has been retained 1338for now for compatibility with existing device driver code. ACPICA BZ 824. 1339 1340Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field in 1341the parse tree object. 1342 1343Added additional warning options for the gcc-4 generation. Updated the source 1344accordingly. This includes some code restructuring to eliminate unreachable 1345code, elimination of some gotos, elimination of unused return values, some 1346additional casting, and removal of redundant declarations. 1347 1348Example Code and Data Size: These are the sizes for the OS-independent 1349acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1350debug version of the code includes the debug output trace mechanism and has a 1351much larger code and data size. 1352 1353 Previous Release: 1354 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 1355 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 1356 Current Release: 1357 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total 1358 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total 1359 13602) iASL Compiler/Disassembler and Tools: 1361 1362No functional changes for this release. 1363 1364---------------------------------------- 136514 December 2009. Summary of changes for version 20091214: 1366 13671) ACPI CA Core Subsystem: 1368 1369Enhanced automatic data type conversions for predefined name repairs. This 1370change expands the automatic repairs/conversions for predefined name return 1371values to make Integers, Strings, and Buffers fully interchangeable. Also, a 1372Buffer can be converted to a Package of Integers if necessary. The nsrepair.c 1373module was completely restructured. Lin Ming, Bob Moore. 1374 1375Implemented automatic removal of null package elements during predefined name 1376repairs. This change will automatically remove embedded and trailing NULL 1377package elements from returned package objects that are defined to contain a 1378variable number of sub-packages. The driver is then presented with a package 1379with no null elements to deal with. ACPICA BZ 819. 1380 1381Implemented a repair for the predefined _FDE and _GTM names. The expected 1382return value for both names is a Buffer of 5 DWORDs. This repair fixes two 1383possible problems (both seen in the field), where a package of integers is 1384returned, or a buffer of BYTEs is returned. With assistance from Jung-uk Kim. 1385 1386Implemented additional module-level code support. This change will properly 1387execute module-level code that is not at the root of the namespace (under a 1388Device object, etc.). Now executes the code within the current scope instead 1389of the root. ACPICA BZ 762. Lin Ming. 1390 1391Fixed possible mutex acquisition errors when running _REG methods. Fixes a 1392problem where mutex errors can occur when running a _REG method that is in 1393the same scope as a method-defined operation region or an operation region 1394under a module-level IF block. This type of code is rare, so the problem has 1395not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore. 1396 1397Fixed a possible memory leak during module-level code execution. An object 1398could be leaked for each block of executed module-level code if the 1399interpreter slack mode is enabled This change deletes any implicitly returned 1400object from the module-level code block. Lin Ming. 1401 1402Removed messages for successful predefined repair(s). The repair mechanism 1403was considered too wordy. Now, messages are only unconditionally emitted if 1404the return object cannot be repaired. Existing messages for successful 1405repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ 827. 1406 1407Example Code and Data Size: These are the sizes for the OS-independent 1408acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1409debug version of the code includes the debug output trace mechanism and has a 1410much larger code and data size. 1411 1412 Previous Release: 1413 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 1414 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 1415 Current Release: 1416 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 1417 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 1418 14192) iASL Compiler/Disassembler and Tools: 1420 1421iASL: Fixed a regression introduced in 20091112 where intermediate .SRC files 1422were no longer automatically removed at the termination of the compile. 1423 1424acpiexec: Implemented the -f option to specify default region fill value. 1425This option specifies the value used to initialize buffers that simulate 1426operation regions. Default value is zero. Useful for debugging problems that 1427depend on a specific initial value for a region or field. 1428 1429---------------------------------------- 143012 November 2009. Summary of changes for version 20091112: 1431 14321) ACPI CA Core Subsystem: 1433 1434Implemented a post-order callback to AcpiWalkNamespace. The existing 1435interface only has a pre-order callback. This change adds an additional 1436parameter for a post-order callback which will be more useful for bus scans. 1437ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference. 1438 1439Modified the behavior of the operation region memory mapping cache for 1440SystemMemory. Ensure that the memory mappings created for operation regions 1441do not cross 4K page boundaries. Crossing a page boundary while mapping 1442regions can cause kernel warnings on some hosts if the pages have different 1443attributes. Such regions are probably BIOS bugs, and this is the workaround. 1444Linux BZ 14445. Lin Ming. 1445 1446Implemented an automatic repair for predefined methods that must return 1447sorted lists. This change will repair (by sorting) packages returned by _ALR, 1448_PSS, and _TSS. Drivers can now assume that the packages are correctly sorted 1449and do not contain NULL package elements. Adds one new file, 1450namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore. 1451 1452Fixed a possible fault during predefined name validation if a return Package 1453object contains NULL elements. Also adds a warning if a NULL element is 1454followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement may 1455include repair or removal of all such NULL elements where possible. 1456 1457Implemented additional module-level executable AML code support. This change 1458will execute module-level code that is not at the root of the namespace 1459(under a Device object, etc.) at table load time. Module-level executable AML 1460code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming. 1461 1462Implemented a new internal function to create Integer objects. This function 1463simplifies miscellaneous object creation code. ACPICA BZ 823. 1464 1465Reduced the severity of predefined repair messages, Warning to Info. Since 1466the object was successfully repaired, a warning is too severe. Reduced to an 1467info message for now. These messages may eventually be changed to debug-only. 1468ACPICA BZ 812. 1469 1470Example Code and Data Size: These are the sizes for the OS-independent 1471acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1472debug version of the code includes the debug output trace mechanism and has a 1473much larger code and data size. 1474 1475 Previous Release: 1476 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 1477 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 1478 Current Release: 1479 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 1480 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 1481 14822) iASL Compiler/Disassembler and Tools: 1483 1484iASL: Implemented Switch() with While(1) so that Break works correctly. This 1485change correctly implements the Switch operator with a surrounding While(1) 1486so that the Break operator works as expected. ACPICA BZ 461. Lin Ming. 1487 1488iASL: Added a message if a package initializer list is shorter than package 1489length. Adds a new remark for a Package() declaration if an initializer list 1490exists, but is shorter than the declared length of the package. Although 1491technically legal, this is probably a coding error and it is seen in the 1492field. ACPICA BZ 815. Lin Ming, Bob Moore. 1493 1494iASL: Fixed a problem where the compiler could fault after the maximum number 1495of errors was reached (200). 1496 1497acpixtract: Fixed a possible warning for pointer cast if the compiler warning 1498level set very high. 1499 1500---------------------------------------- 150113 October 2009. Summary of changes for version 20091013: 1502 15031) ACPI CA Core Subsystem: 1504 1505Fixed a problem where an Operation Region _REG method could be executed more 1506than once. If a custom address space handler is installed by the host before 1507the "initialize operation regions" phase of the ACPICA initialization, any 1508_REG methods for that address space could be executed twice. This change 1509fixes the problem. ACPICA BZ 427. Lin Ming. 1510 1511Fixed a possible memory leak for the Scope() ASL operator. When the exact 1512invocation of "Scope(\)" is executed (change scope to root), one internal 1513operand object was leaked. Lin Ming. 1514 1515Implemented a run-time repair for the _MAT predefined method. If the _MAT 1516return value is defined as a Field object in the AML, and the field 1517size is less than or equal to the default width of an integer (32 or 64),_MAT 1518can incorrectly return an Integer instead of a Buffer. ACPICA now 1519automatically repairs this problem. ACPICA BZ 810. 1520 1521Implemented a run-time repair for the _BIF and _BIX predefined methods. The 1522"OEM Information" field is often incorrectly returned as an Integer with 1523value zero if the field is not supported by the platform. This is due to an 1524ambiguity in the ACPI specification. The field should always be a string. 1525ACPICA now automatically repairs this problem by returning a NULL string 1526within the returned Package. ACPICA BZ 807. 1527 1528Example Code and Data Size: These are the sizes for the OS-independent 1529acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1530debug version of the code includes the debug output trace mechanism and has a 1531much larger code and data size. 1532 1533 Previous Release: 1534 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 1535 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 1536 Current Release: 1537 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 1538 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 1539 15402) iASL Compiler/Disassembler and Tools: 1541 1542Disassembler: Fixed a problem where references to external symbols that 1543contained one or more parent-prefixes (carats) were not handled correctly, 1544possibly causing a fault. ACPICA BZ 806. Lin Ming. 1545 1546Disassembler: Restructured the code so that all functions that handle 1547external symbols are in a single module. One new file is added, 1548common/dmextern.c. 1549 1550AML Debugger: Added a max count argument for the Batch command (which 1551executes multiple predefined methods within the namespace.) 1552 1553iASL: Updated the compiler documentation (User Reference.) Available at 1554http://www.acpica.org/documentation/. ACPICA BZ 750. 1555 1556AcpiXtract: Updated for Lint and other formatting changes. Close all open 1557files. 1558 1559---------------------------------------- 156003 September 2009. Summary of changes for version 20090903: 1561 15621) ACPI CA Core Subsystem: 1563 1564For Windows Vista compatibility, added the automatic execution of an _INI 1565method located at the namespace root (\_INI). This method is executed at 1566table load time. This support is in addition to the automatic execution of 1567\_SB._INI. Lin Ming. 1568 1569Fixed a possible memory leak in the interpreter for AML package objects if 1570the package initializer list is longer than the defined size of the package. 1571This apparently can only happen if the BIOS changes the package size on the 1572fly (seen in a _PSS object), as ASL compilers do not allow this. The 1573interpreter will truncate the package to the defined size (and issue an error 1574message), but previously could leave the extra objects undeleted if they were 1575pre-created during the argument processing (such is the case if the package 1576consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805. 1577 1578Fixed a problem seen when a Buffer or String is stored to itself via ASL. 1579This has been reported in the field. Previously, ACPICA would zero out the 1580buffer/string. Now, the operation is treated as a noop. Provides Windows 1581compatibility. ACPICA BZ 803. Lin Ming. 1582 1583Removed an extraneous error message for ASL constructs of the form 1584Store(LocalX,LocalX) when LocalX is uninitialized. These curious statements 1585are seen in many BIOSs and are once again treated as NOOPs and no error is 1586emitted when they are encountered. ACPICA BZ 785. 1587 1588Fixed an extraneous warning message if a _DSM reserved method returns a 1589Package object. _DSM can return any type of object, so validation on the 1590return type cannot be performed. ACPICA BZ 802. 1591 1592Example Code and Data Size: These are the sizes for the OS-independent 1593acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1594debug version of the code includes the debug output trace mechanism and has a 1595much larger code and data size. 1596 1597 Previous Release: 1598 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 1599 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 1600 Current Release: 1601 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 1602 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 1603 16042) iASL Compiler/Disassembler and Tools: 1605 1606iASL: Fixed a problem with the use of the Alias operator and Resource 1607Templates. The correct alias is now constructed and no error is emitted. 1608ACPICA BZ 738. 1609 1610iASL: Implemented the -I option to specify additional search directories for 1611include files. Allows multiple additional search paths for include files. 1612Directories are searched in the order specified on the command line (after 1613the local directory is searched.) ACPICA BZ 800. 1614 1615iASL: Fixed a problem where the full pathname for include files was not 1616emitted for warnings/errors. This caused the IDE support to not work 1617properly. ACPICA BZ 765. 1618 1619iASL: Implemented the -@ option to specify a Windows-style response file 1620containing additional command line options. ACPICA BZ 801. 1621 1622AcpiExec: Added support to load multiple AML files simultaneously (such as a 1623DSDT and multiple SSDTs). Also added support for wildcards within the AML 1624pathname. These features allow all machine tables to be easily loaded and 1625debugged together. ACPICA BZ 804. 1626 1627Disassembler: Added missing support for disassembly of HEST table Error Bank 1628subtables. 1629 1630---------------------------------------- 163130 July 2009. Summary of changes for version 20090730: 1632 1633The ACPI 4.0 implementation for ACPICA is complete with this release. 1634 16351) ACPI CA Core Subsystem: 1636 1637ACPI 4.0: Added header file support for all new and changed ACPI tables. 1638Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are new 1639for ACPI 4.0, but have previously been supported in ACPICA are: CPEP, BERT, 1640EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT. There 1641have been some ACPI 4.0 changes to other existing tables. Split the large 1642actbl1.h header into the existing actbl2.h header. ACPICA BZ 774. 1643 1644ACPI 4.0: Implemented predefined name validation for all new names. There are 164531 new names in ACPI 4.0. The predefined validation module was split into two 1646files. The new file is namespace/nsrepair.c. ACPICA BZ 770. 1647 1648Implemented support for so-called "module-level executable code". This is 1649executable AML code that exists outside of any control method and is intended 1650to be executed at table load time. Although illegal since ACPI 2.0, this type 1651of code still exists and is apparently still being created. Blocks of this 1652code are now detected and executed as intended. Currently, the code blocks 1653must exist under either an If, Else, or While construct; these are the 1654typical cases seen in the field. ACPICA BZ 762. Lin Ming. 1655 1656Implemented an automatic dynamic repair for predefined names that return 1657nested Package objects. This applies to predefined names that are defined to 1658return a variable-length Package of sub-packages. If the number of sub- 1659packages is one, BIOS code is occasionally seen that creates a simple single 1660package with no sub-packages. This code attempts to fix the problem by 1661wrapping a new package object around the existing package. These methods can 1662be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA BZ 1663790. 1664 1665Fixed a regression introduced in 20090625 for the AcpiGetDevices interface. 1666The _HID/_CID matching was broken and no longer matched IDs correctly. ACPICA 1667BZ 793. 1668 1669Fixed a problem with AcpiReset where the reset would silently fail if the 1670register was one of the protected I/O ports. AcpiReset now bypasses the port 1671validation mechanism. This may eventually be driven into the AcpiRead/Write 1672interfaces. 1673 1674Fixed a regression related to the recent update of the AcpiRead/Write 1675interfaces. A sleep/suspend could fail if the optional PM2 Control register 1676does not exist during an attempt to write the Bus Master Arbitration bit. 1677(However, some hosts already delete the code that writes this bit, and the 1678code may in fact be obsolete at this date.) ACPICA BZ 799. 1679 1680Fixed a problem where AcpiTerminate could fault if inadvertently called twice 1681in succession. ACPICA BZ 795. 1682 1683Example Code and Data Size: These are the sizes for the OS-independent 1684acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1685debug version of the code includes the debug output trace mechanism and has a 1686much larger code and data size. 1687 1688 Previous Release: 1689 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 1690 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 1691 Current Release: 1692 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 1693 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 1694 16952) iASL Compiler/Disassembler and Tools: 1696 1697ACPI 4.0: Implemented disassembler support for all new ACPI tables and 1698changes to existing tables. ACPICA BZ 775. 1699 1700---------------------------------------- 170125 June 2009. Summary of changes for version 20090625: 1702 1703The ACPI 4.0 Specification was released on June 16 and is available at 1704www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will 1705continue for the next few releases. 1706 17071) ACPI CA Core Subsystem: 1708 1709ACPI 4.0: Implemented interpreter support for the IPMI operation region 1710address space. Includes support for bi-directional data buffers and an IPMI 1711address space handler (to be installed by an IPMI device driver.) ACPICA BZ 1712773. Lin Ming. 1713 1714ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT. Includes 1715support in both the header files and the disassembler. 1716 1717Completed a major update for the AcpiGetObjectInfo external interface. 1718Changes include: 1719 - Support for variable, unlimited length HID, UID, and CID strings. 1720 - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA, etc.) 1721 - Call the _SxW power methods on behalf of a device object. 1722 - Determine if a device is a PCI root bridge. 1723 - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO. 1724These changes will require an update to all callers of this interface. See 1725the updated ACPICA Programmer Reference for details. One new source file has 1726been added - utilities/utids.c. ACPICA BZ 368, 780. 1727 1728Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit 1729transfers. The Value parameter has been extended from 32 bits to 64 bits in 1730order to support new ACPI 4.0 tables. These changes will require an update to 1731all callers of these interfaces. See the ACPICA Programmer Reference for 1732details. ACPICA BZ 768. 1733 1734Fixed several problems with AcpiAttachData. The handler was not invoked when 1735the host node was deleted. The data sub-object was not automatically deleted 1736when the host node was deleted. The interface to the handler had an unused 1737parameter, this was removed. ACPICA BZ 778. 1738 1739Enhanced the function that dumps ACPI table headers. All non-printable 1740characters in the string fields are now replaced with '?' (Signature, OemId, 1741OemTableId, and CompilerId.) ACPI tables with non-printable characters in 1742these fields are occasionally seen in the field. ACPICA BZ 788. 1743 1744Fixed a problem with predefined method repair code where the code that 1745attempts to repair/convert an object of incorrect type is only executed on 1746the first time the predefined method is called. The mechanism that disables 1747warnings on subsequent calls was interfering with the repair mechanism. 1748ACPICA BZ 781. 1749 1750Fixed a possible memory leak in the predefined validation/repair code when a 1751buffer is automatically converted to an expected string object. 1752 1753Removed obsolete 16-bit files from the distribution and from the current git 1754tree head. ACPICA BZ 776. 1755 1756Example Code and Data Size: These are the sizes for the OS-independent 1757acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1758debug version of the code includes the debug output trace mechanism and has a 1759much larger code and data size. 1760 1761 Previous Release: 1762 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 1763 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 1764 Current Release: 1765 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 1766 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 1767 17682) iASL Compiler/Disassembler and Tools: 1769 1770ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI 1771operation region keyword. ACPICA BZ 771, 772. Lin Ming. 1772 1773ACPI 4.0: iASL - implemented compile-time validation support for all new 1774predefined names and control methods (31 total). ACPICA BZ 769. 1775 1776---------------------------------------- 177721 May 2009. Summary of changes for version 20090521: 1778 17791) ACPI CA Core Subsystem: 1780 1781Disabled the preservation of the SCI enable bit in the PM1 control register. 1782The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification to be 1783a "preserved" bit - "OSPM always preserves this bit position", section 17844.7.3.2.1. However, some machines fail if this bit is in fact preserved 1785because the bit needs to be explicitly set by the OS as a workaround. No 1786machines fail if the bit is not preserved. Therefore, ACPICA no longer 1787attempts to preserve this bit. 1788 1789Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or 1790incorrectly formed _PRT package could cause a fault. Added validation to 1791ensure that each package element is actually a sub-package. 1792 1793Implemented a new interface to install or override a single control method, 1794AcpiInstallMethod. This interface is useful when debugging in order to repair 1795an existing method or to install a missing method without having to override 1796the entire ACPI table. See the ACPICA Programmer Reference for use and 1797examples. Lin Ming, Bob Moore. 1798 1799Fixed several reference count issues with the DdbHandle object that is 1800created from a Load or LoadTable operator. Prevent premature deletion of the 1801object. Also, mark the object as invalid once the table has been unloaded. 1802This is needed because the handle itself may not be deleted after the table 1803unload, depending on whether it has been stored in a named object by the 1804caller. Lin Ming. 1805 1806Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple 1807mutexes of the same sync level are acquired but then not released in strict 1808opposite order, the internally maintained Current Sync Level becomes confused 1809and can cause subsequent execution errors. ACPICA BZ 471. 1810 1811Changed the allowable release order for ASL mutex objects. The ACPI 4.0 1812specification has been changed to make the SyncLevel for mutex objects more 1813useful. When releasing a mutex, the SyncLevel of the mutex must now be the 1814same as the current sync level. This makes more sense than the previous rule 1815(SyncLevel less than or equal). This change updates the code to match the 1816specification. 1817 1818Fixed a problem with the local version of the AcpiOsPurgeCache function. The 1819(local) cache must be locked during all cache object deletions. Andrew 1820Baumann. 1821 1822Updated the Load operator to use operation region interfaces. This replaces 1823direct memory mapping with region access calls. Now, all region accesses go 1824through the installed region handler as they should. 1825 1826Simplified and optimized the NsGetNextNode function. Reduced parameter count 1827and reduced code for this frequently used function. 1828 1829Example Code and Data Size: These are the sizes for the OS-independent 1830acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1831debug version of the code includes the debug output trace mechanism and has a 1832much larger code and data size. 1833 1834 Previous Release: 1835 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 1836 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 1837 Current Release: 1838 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 1839 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 1840 18412) iASL Compiler/Disassembler and Tools: 1842 1843Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some problems 1844with sub-table disassembly and handling invalid sub-tables. Attempt recovery 1845after an invalid sub-table ID. 1846 1847---------------------------------------- 184822 April 2009. Summary of changes for version 20090422: 1849 18501) ACPI CA Core Subsystem: 1851 1852Fixed a compatibility issue with the recently released I/O port protection 1853mechanism. For windows compatibility, 1) On a port protection violation, 1854simply ignore the request and do not return an exception (allow the control 1855method to continue execution.) 2) If only part of the request overlaps a 1856protected port, read/write the individual ports that are not protected. Linux 1857BZ 13036. Lin Ming 1858 1859Enhanced the execution of the ASL/AML BreakPoint operator so that it actually 1860breaks into the AML debugger if the debugger is present. This matches the 1861ACPI-defined behavior. 1862 1863Fixed several possible warnings related to the use of the configurable 1864ACPI_THREAD_ID. This type can now be configured as either an integer or a 1865pointer with no warnings. Also fixes several warnings in printf-like 1866statements for the 64-bit build when the type is configured as a pointer. 1867ACPICA BZ 766, 767. 1868 1869Fixed a number of possible warnings when compiling with gcc 4+ (depending on 1870warning options.) Examples include printf formats, aliasing, unused globals, 1871missing prototypes, missing switch default statements, use of non-ANSI 1872library functions, use of non-ANSI constructs. See generate/unix/Makefile for 1873a list of warning options used with gcc 3 and 4. ACPICA BZ 735. 1874 1875Example Code and Data Size: These are the sizes for the OS-independent 1876acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1877debug version of the code includes the debug output trace mechanism and has a 1878much larger code and data size. 1879 1880 Previous Release: 1881 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 1882 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 1883 Current Release: 1884 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 1885 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 1886 18872) iASL Compiler/Disassembler and Tools: 1888 1889iASL: Fixed a generation warning from Bison 2.3 and fixed several warnings on 1890the 64-bit build. 1891 1892iASL: Fixed a problem where the Unix/Linux versions of the compiler could not 1893correctly digest Windows/DOS formatted files (with CR/LF). 1894 1895iASL: Added a new option for "quiet mode" (-va) that produces only the 1896compilation summary, not individual errors and warnings. Useful for large 1897batch compilations. 1898 1899AcpiExec: Implemented a new option (-z) to enable a forced semaphore/mutex 1900timeout that can be used to detect hang conditions during execution of AML 1901code (includes both internal semaphores and AML-defined mutexes and events.) 1902 1903Added new makefiles for the generation of acpica in a generic unix-like 1904environment. These makefiles are intended to generate the acpica tools and 1905utilities from the original acpica git source tree structure. 1906 1907Test Suites: Updated and cleaned up the documentation files. Updated the 1908copyrights to 2009, affecting all source files. Use the new version of iASL 1909with quiet mode. Increased the number of available semaphores in the Windows 1910OSL, allowing the aslts to execute fully on Windows. For the Unix OSL, added 1911an alternate implementation of the semaphore timeout to allow aslts to 1912execute fully on Cygwin. 1913 1914---------------------------------------- 191520 March 2009. Summary of changes for version 20090320: 1916 19171) ACPI CA Core Subsystem: 1918 1919Fixed a possible race condition between AcpiWalkNamespace and dynamic table 1920unloads. Added a reader/writer locking mechanism to allow multiple concurrent 1921namespace walks (readers), but block a dynamic table unload until it can gain 1922exclusive write access to the namespace. This fixes a problem where a table 1923unload could (possibly catastrophically) delete the portion of the namespace 1924that is currently being examined by a walk. Adds a new file, utlock.c, that 1925implements the reader/writer lock mechanism. ACPICA BZ 749. 1926 1927Fixed a regression introduced in version 20090220 where a change to the FADT 1928handling could cause the ACPICA subsystem to access non-existent I/O ports. 1929 1930Modified the handling of FADT register and table (FACS/DSDT) addresses. The 1931FADT can contain both 32-bit and 64-bit versions of these addresses. 1932Previously, the 64-bit versions were favored, meaning that if both 32 and 64 1933versions were valid, but not equal, the 64-bit version was used. This was 1934found to cause some machines to fail. Now, in this case, the 32-bit version 1935is used instead. This now matches the Windows behavior. 1936 1937Implemented a new mechanism to protect certain I/O ports. Provides Microsoft 1938compatibility and protects the standard PC I/O ports from access via AML 1939code. Adds a new file, hwvalid.c 1940 1941Fixed a possible extraneous warning message from the FADT support. The 1942message warns of a 32/64 length mismatch between the legacy and GAS 1943definitions for a register. 1944 1945Removed the obsolete AcpiOsValidateAddress OSL interface. This interface is 1946made obsolete by the port protection mechanism above. It was previously used 1947to validate the entire address range of an operation region, which could be 1948incorrect if the range included illegal ports, but fields within the 1949operation region did not actually access those ports. Validation is now 1950performed on a per-field basis instead of the entire region. 1951 1952Modified the handling of the PM1 Status Register ignored bit (bit 11.) 1953Ignored bits must be "preserved" according to the ACPI spec. Usually, this 1954means a read/modify/write when writing to the register. However, for status 1955registers, writing a one means clear the event. Writing a zero means preserve 1956the event (do not clear.) This behavior is clarified in the ACPI 4.0 spec, 1957and the ACPICA code now simply always writes a zero to the ignored bit. 1958 1959Modified the handling of ignored bits for the PM1 A/B Control Registers. As 1960per the ACPI specification, for the control registers, preserve 1961(read/modify/write) all bits that are defined as either reserved or ignored. 1962 1963Updated the handling of write-only bits in the PM1 A/B Control Registers. 1964When reading the register, zero the write-only bits as per the ACPI spec. 1965ACPICA BZ 443. Lin Ming. 1966 1967Removed "Linux" from the list of supported _OSI strings. Linux no longer 1968wants to reply true to this request. The Windows strings are the only paths 1969through the AML that are tested and known to work properly. 1970 1971 Previous Release: 1972 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 1973 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 1974 Current Release: 1975 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 1976 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 1977 19782) iASL Compiler/Disassembler and Tools: 1979 1980Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c and 1981aetables.c 1982 1983---------------------------------------- 198420 February 2009. Summary of changes for version 20090220: 1985 19861) ACPI CA Core Subsystem: 1987 1988Optimized the ACPI register locking. Removed locking for reads from the ACPI 1989bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock is 1990not required when reading the single-bit registers. The 1991AcpiGetRegisterUnlocked function is no longer needed and has been removed. 1992This will improve performance for reads on these registers. ACPICA BZ 760. 1993 1994Fixed the parameter validation for AcpiRead/Write. Now return 1995AE_BAD_PARAMETER if the input register pointer is null, and AE_BAD_ADDRESS if 1996the register has an address of zero. Previously, these cases simply returned 1997AE_OK. For optional registers such as PM1B status/enable/control, the caller 1998should check for a valid register address before calling. ACPICA BZ 748. 1999 2000Renamed the external ACPI bit register access functions. Renamed 2001AcpiGetRegister and AcpiSetRegister to clarify the purpose of these 2002functions. The new names are AcpiReadBitRegister and AcpiWriteBitRegister. 2003Also, restructured the code for these functions by simplifying the code path 2004and condensing duplicate code to reduce code size. 2005 2006Added new functions to transparently handle the possibly split PM1 A/B 2007registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two functions 2008now handle the split registers for PM1 Status, Enable, and Control. ACPICA BZ 2009746. 2010 2011Added a function to handle the PM1 control registers, AcpiHwWritePm1Control. 2012This function writes both of the PM1 control registers (A/B). These registers 2013are different than the PM1 A/B status and enable registers in that different 2014values can be written to the A/B registers. Most notably, the SLP_TYP bits 2015can be different, as per the values returned from the _Sx predefined methods. 2016 2017Removed an extra register write within AcpiHwClearAcpiStatus. This function 2018was writing an optional PM1B status register twice. The existing call to the 2019low-level AcpiHwRegisterWrite automatically handles a possibly split PM1 A/B 2020register. ACPICA BZ 751. 2021 2022Split out the PM1 Status registers from the FADT. Added new globals for these 2023registers (A/B), similar to the way the PM1 Enable registers are handled. 2024Instead of overloading the FADT Event Register blocks. This makes the code 2025clearer and less prone to error. 2026 2027Fixed the warning message for when the platform contains too many ACPI tables 2028for the default size of the global root table data structure. The calculation 2029for the truncation value was incorrect. 2030 2031Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this 2032obsolete macro, since it is now a simple reference to ->common.type. There 2033were about 150 invocations of the macro across 41 files. ACPICA BZ 755. 2034 2035Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as 2036TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to 2037simply SLEEP_TYPE. ACPICA BZ 754. 2038 2039Conditionally compile the AcpiSetFirmwareWakingVector64 function. This 2040function is only needed on 64-bit host operating systems and is thus not 2041included for 32-bit hosts. 2042 2043Debug output: print the input and result for invocations of the _OSI reserved 2044control method via the ACPI_LV_INFO debug level. Also, reduced some of the 2045verbosity of this debug level. Len Brown. 2046 2047Example Code and Data Size: These are the sizes for the OS-independent 2048acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2049debug version of the code includes the debug output trace mechanism and has a 2050much larger code and data size. 2051 2052 Previous Release: 2053 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 2054 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 2055 Current Release: 2056 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 2057 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 2058 20592) iASL Compiler/Disassembler and Tools: 2060 2061Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the 2062various legal performance profiles. 2063 2064---------------------------------------- 206523 January 2009. Summary of changes for version 20090123: 2066 20671) ACPI CA Core Subsystem: 2068 2069Added the 2009 copyright to all module headers and signons. This affects 2070virtually every file in the ACPICA core subsystem, the iASL compiler, and 2071the tools/utilities. 2072 2073Implemented a change to allow the host to override any ACPI table, including 2074dynamically loaded tables. Previously, only the DSDT could be replaced by the 2075host. With this change, the AcpiOsTableOverride interface is called for each 2076table found in the RSDT/XSDT during ACPICA initialization, and also whenever 2077a table is dynamically loaded via the AML Load operator. 2078 2079Updated FADT flag definitions, especially the Boot Architecture flags. 2080 2081Debugger: For the Find command, automatically pad the input ACPI name with 2082underscores if the name is shorter than 4 characters. This enables a match 2083with the actual namespace entry which is itself padded with underscores. 2084 2085Example Code and Data Size: These are the sizes for the OS-independent 2086acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2087debug version of the code includes the debug output trace mechanism and has a 2088much larger code and data size. 2089 2090 Previous Release: 2091 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 2092 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 2093 Current Release: 2094 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 2095 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 2096 20972) iASL Compiler/Disassembler and Tools: 2098 2099Fix build error under Bison-2.4. 2100 2101Dissasembler: Enhanced FADT support. Added decoding of the Boot Architecture 2102flags. Now decode all flags, regardless of the FADT version. Flag output 2103includes the FADT version which first defined each flag. 2104 2105The iASL -g option now dumps the RSDT to a file (in addition to the FADT and 2106DSDT). Windows only. 2107 2108---------------------------------------- 210904 December 2008. Summary of changes for version 20081204: 2110 21111) ACPI CA Core Subsystem: 2112 2113The ACPICA Programmer Reference has been completely updated and revamped for 2114this release. This includes updates to the external interfaces, OSL 2115interfaces, the overview sections, and the debugger reference. 2116 2117Several new ACPICA interfaces have been implemented and documented in the 2118programmer reference: 2119AcpiReset - Writes the reset value to the FADT-defined reset register. 2120AcpiDisableAllGpes - Disable all available GPEs. 2121AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs. 2122AcpiGetGpeDevice - Get the GPE block device associated with a GPE. 2123AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs. 2124AcpiRead - Low-level read ACPI register (was HwLowLevelRead.) 2125AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.) 2126 2127Most of the public ACPI hardware-related interfaces have been moved to a new 2128file, components/hardware/hwxface.c 2129 2130Enhanced the FADT parsing and low-level ACPI register access: The ACPI 2131register lengths within the FADT are now used, and the low level ACPI 2132register access no longer hardcodes the ACPI register lengths. Given that 2133there may be some risk in actually trusting the FADT register lengths, a run- 2134time option was added to fall back to the default hardcoded lengths if the 2135FADT proves to contain incorrect values - UseDefaultRegisterWidths. This 2136option is set to true for now, and a warning is issued if a suspicious FADT 2137register length is overridden with the default value. 2138 2139Fixed a reference count issue in NsRepairObject. This problem was introduced 2140in version 20081031 as part of a fix to repair Buffer objects within 2141Packages. Lin Ming. 2142 2143Added semaphore support to the Linux/Unix application OS-services layer 2144(OSL). ACPICA BZ 448. Lin Ming. 2145 2146Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes will 2147be implemented in the OSL, or will binary semaphores be used instead. 2148 2149Example Code and Data Size: These are the sizes for the OS-independent 2150acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2151debug version of the code includes the debug output trace mechanism and has a 2152much larger code and data size. 2153 2154 Previous Release: 2155 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 2156 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 2157 Current Release: 2158 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 2159 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 2160 21612) iASL Compiler/Disassembler and Tools: 2162 2163iASL: Completed the '-e' option to include additional ACPI tables in order to 2164aid with disassembly and External statement generation. ACPICA BZ 742. Lin 2165Ming. 2166 2167iASL: Removed the "named object in while loop" error. The compiler cannot 2168determine how many times a loop will execute. ACPICA BZ 730. 2169 2170Disassembler: Implemented support for FADT revision 2 (MS extension). ACPICA 2171BZ 743. 2172 2173Disassembler: Updates for several ACPI data tables (HEST, EINJ, and MCFG). 2174 2175---------------------------------------- 217631 October 2008. Summary of changes for version 20081031: 2177 21781) ACPI CA Core Subsystem: 2179 2180Restructured the ACPICA header files into public/private. acpi.h now includes 2181only the "public" acpica headers. All other acpica headers are "private" and 2182should not be included by acpica users. One new file, accommon.h is used to 2183include the commonly used private headers for acpica code generation. Future 2184plans include moving all private headers to a new subdirectory. 2185 2186Implemented an automatic Buffer->String return value conversion for 2187predefined ACPI methods. For these methods (such as _BIF), added automatic 2188conversion for return objects that are required to be a String, but a Buffer 2189was found instead. This can happen when reading string battery data from an 2190operation region, because it used to be difficult to convert the data from 2191buffer to string from within the ASL. Ensures that the host OS is provided 2192with a valid null-terminated string. Linux BZ 11822. 2193 2194Updated the FACS waking vector interfaces. Split AcpiSetFirmwareWakingVector 2195into two: one for the 32-bit vector, another for the 64-bit vector. This is 2196required because the host OS must setup the wake much differently for each 2197vector (real vs. protected mode, etc.) and the interface itself should not be 2198deciding which vector to use. Also, eliminated the GetFirmwareWakingVector 2199interface, as it served no purpose (only the firmware reads the vector, OS 2200only writes the vector.) ACPICA BZ 731. 2201 2202Implemented a mechanism to escape infinite AML While() loops. Added a loop 2203counter to force exit from AML While loops if the count becomes too large. 2204This can occur in poorly written AML when the hardware does not respond 2205within a while loop and the loop does not implement a timeout. The maximum 2206loop count is configurable. A new exception code is returned when a loop is 2207broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore. 2208 2209Optimized the execution of AML While loops. Previously, a control state 2210object was allocated and freed for each execution of the loop. The 2211optimization is to simply reuse the control state for each iteration. This 2212speeds up the raw loop execution time by about 5%. 2213 2214Enhanced the implicit return mechanism. For Windows compatibility, return an 2215implicit integer of value zero for methods that contain no executable code. 2216Such methods are seen in the field as stubs (presumably), and can cause 2217drivers to fail if they expect a return value. Lin Ming. 2218 2219Allow multiple backslashes as root prefixes in namepaths. In a fully 2220qualified namepath, allow multiple backslash prefixes. This can happen (and 2221is seen in the field) because of the use of a double-backslash in strings 2222(since backslash is the escape character) causing confusion. ACPICA BZ 739 2223Lin Ming. 2224 2225Emit a warning if two different FACS or DSDT tables are discovered in the 2226FADT. Checks if there are two valid but different addresses for the FACS and 2227DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.) 2228 2229Consolidated the method argument count validation code. Merged the code that 2230validates control method argument counts into the predefined validation 2231module. Eliminates possible multiple warnings for incorrect argument counts. 2232 2233Implemented ACPICA example code. Includes code for ACPICA initialization, 2234handler installation, and calling a control method. Available at 2235source/tools/examples. 2236 2237Added a global pointer for FACS table to simplify internal FACS access. Use 2238the global pointer instead of using AcpiGetTableByIndex for each FACS access. 2239This simplifies the code for the Global Lock and the Firmware Waking 2240Vector(s). 2241 2242Example Code and Data Size: These are the sizes for the OS-independent 2243acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2244debug version of the code includes the debug output trace mechanism and has a 2245much larger code and data size. 2246 2247 Previous Release: 2248 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 2249 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 2250 Current Release: 2251 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 2252 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 2253 22542) iASL Compiler/Disassembler and Tools: 2255 2256iASL: Improved disassembly of external method calls. Added the -e option to 2257allow the inclusion of additional ACPI tables to help with the disassembly of 2258method invocations and the generation of external declarations during the 2259disassembly. Certain external method invocations cannot be disassembled 2260properly without the actual declaration of the method. Use the -e option to 2261include the table where the external method(s) are actually declared. Most 2262useful for disassembling SSDTs that make method calls back to the master 2263DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl -d 2264-e dsdt.aml ssdt1.aml 2265 2266iASL: Fix to allow references to aliases within ASL namepaths. Fixes a 2267problem where the use of an alias within a namepath would result in a not 2268found error or cause the compiler to fault. Also now allows forward 2269references from the Alias operator itself. ACPICA BZ 738. 2270 2271---------------------------------------- 227226 September 2008. Summary of changes for version 20080926: 2273 22741) ACPI CA Core Subsystem: 2275 2276Designed and implemented a mechanism to validate predefined ACPI methods and 2277objects. This code validates the predefined ACPI objects (objects whose names 2278start with underscore) that appear in the namespace, at the time they are 2279evaluated. The argument count and the type of the returned object are 2280validated against the ACPI specification. The purpose of this validation is 2281to detect problems with the BIOS-implemented predefined ACPI objects before 2282the results are returned to the ACPI-related drivers. Future enhancements may 2283include actual repair of incorrect return objects where possible. Two new 2284files are nspredef.c and acpredef.h. 2285 2286Fixed a fault in the AML parser if a memory allocation fails during the Op 2287completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492. 2288 2289Fixed an issue with implicit return compatibility. This change improves the 2290implicit return mechanism to be more compatible with the MS interpreter. Lin 2291Ming, ACPICA BZ 349. 2292 2293Implemented support for zero-length buffer-to-string conversions. Allow zero 2294length strings during interpreter buffer-to-string conversions. For example, 2295during the ToDecimalString and ToHexString operators, as well as implicit 2296conversions. Fiodor Suietov, ACPICA BZ 585. 2297 2298Fixed two possible memory leaks in the error exit paths of 2299AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions are 2300similar in that they use a stack of state objects in order to eliminate 2301recursion. The stack must be fully unwound and deallocated if an error 2302occurs. Lin Ming. ACPICA BZ 383. 2303 2304Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the global 2305ACPI register table. This bit does not exist and is unused. Lin Ming, Bob 2306Moore ACPICA BZ 442. 2307 2308Removed the obsolete version number in module headers. Removed the 2309"$Revision" number that appeared in each module header. This version number 2310was useful under SourceSafe and CVS, but has no meaning under git. It is not 2311only incorrect, it could also be misleading. 2312 2313Example Code and Data Size: These are the sizes for the OS-independent 2314acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2315debug version of the code includes the debug output trace mechanism and has a 2316much larger code and data size. 2317 2318 Previous Release: 2319 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 2320 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 2321 Current Release: 2322 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 2323 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 2324 2325---------------------------------------- 232629 August 2008. Summary of changes for version 20080829: 2327 23281) ACPI CA Core Subsystem: 2329 2330Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type 2331Reference. Changes include the elimination of cheating on the Object field 2332for the DdbHandle subtype, addition of a reference class field to 2333differentiate the various reference types (instead of an AML opcode), and the 2334cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723 2335 2336Reduce an error to a warning for an incorrect method argument count. 2337Previously aborted with an error if too few arguments were passed to a 2338control method via the external ACPICA interface. Now issue a warning instead 2339and continue. Handles the case where the method inadvertently declares too 2340many arguments, but does not actually use the extra ones. Applies mainly to 2341the predefined methods. Lin Ming. Linux BZ 11032. 2342 2343Disallow the evaluation of named object types with no intrinsic value. Return 2344AE_TYPE for objects that have no value and therefore evaluation is undefined: 2345Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation of 2346these types were allowed, but an exception would be generated at some point 2347during the evaluation. Now, the error is generated up front. 2348 2349Fixed a possible memory leak in the AcpiNsGetExternalPathname function 2350(nsnames.c). Fixes a leak in the error exit path. 2351 2352Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These debug 2353levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and ACPI_EXCEPTION 2354interfaces. Also added ACPI_DB_EVENTS to correspond with the existing 2355ACPI_LV_EVENTS. 2356 2357Removed obsolete and/or unused exception codes from the acexcep.h header. 2358There is the possibility that certain device drivers may be affected if they 2359use any of these exceptions. 2360 2361The ACPICA documentation has been added to the public git source tree, under 2362acpica/documents. Included are the ACPICA programmer reference, the iASL 2363compiler reference, and the changes.txt release logfile. 2364 2365Example Code and Data Size: These are the sizes for the OS-independent 2366acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2367debug version of the code includes the debug output trace mechanism and has a 2368much larger code and data size. 2369 2370 Previous Release: 2371 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 2372 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 2373 Current Release: 2374 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 2375 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 2376 23772) iASL Compiler/Disassembler and Tools: 2378 2379Allow multiple argument counts for the predefined _SCP method. ACPI 3.0 2380defines _SCP with 3 arguments. Previous versions defined it with only 1 2381argument. iASL now allows both definitions. 2382 2383iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for zero- 2384length subtables when disassembling ACPI tables. Also fixed a couple of 2385errors where a full 16-bit table type field was not extracted from the input 2386properly. 2387 2388acpisrc: Improve comment counting mechanism for generating source code 2389statistics. Count first and last lines of multi-line comments as whitespace, 2390not comment lines. Handle Linux legal header in addition to standard acpica 2391header. 2392 2393---------------------------------------- 2394 239529 July 2008. Summary of changes for version 20080729: 2396 23971) ACPI CA Core Subsystem: 2398 2399Fix a possible deadlock in the GPE dispatch. Remove call to 2400AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will attempt 2401to acquire the GPE lock but can deadlock since the GPE lock is already held 2402at dispatch time. This code was introduced in version 20060831 as a response 2403to Linux BZ 6881 and has since been removed from Linux. 2404 2405Add a function to dereference returned reference objects. Examines the return 2406object from a call to AcpiEvaluateObject. Any Index or RefOf references are 2407automatically dereferenced in an attempt to return something useful (these 2408reference types cannot be converted into an external ACPI_OBJECT.) Provides 2409MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105 2410 2411x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new 2412subtables for the MADT and one new subtable for the SRAT. Includes 2413disassembler and AcpiSrc support. Data from the Intel 64 Architecture x2APIC 2414Specification, June 2008. 2415 2416Additional error checking for pathname utilities. Add error check after all 2417calls to AcpiNsGetPathnameLength. Add status return from 2418AcpiNsBuildExternalPath and check after all calls. Add parameter validation 2419to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar. 2420 2421Return status from the global init function AcpiUtGlobalInitialize. This is 2422used by both the kernel subsystem and the utilities such as iASL compiler. 2423The function could possibly fail when the caches are initialized. Yang Yi. 2424 2425Add a function to decode reference object types to strings. Created for 2426improved error messages. 2427 2428Improve object conversion error messages. Better error messages during object 2429conversion from internal to the external ACPI_OBJECT. Used for external calls 2430to AcpiEvaluateObject. 2431 2432Example Code and Data Size: These are the sizes for the OS-independent 2433acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2434debug version of the code includes the debug output trace mechanism and has a 2435much larger code and data size. 2436 2437 Previous Release: 2438 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 2439 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 2440 Current Release: 2441 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 2442 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 2443 24442) iASL Compiler/Disassembler and Tools: 2445 2446Debugger: fix a possible hang when evaluating non-methods. Fixes a problem 2447introduced in version 20080701. If the object being evaluated (via execute 2448command) is not a method, the debugger can hang while trying to obtain non- 2449existent parameters. 2450 2451iASL: relax error for using reserved "_T_x" identifiers. These names can 2452appear in a disassembled ASL file if they were emitted by the original 2453compiler. Instead of issuing an error or warning and forcing the user to 2454manually change these names, issue a remark instead. 2455 2456iASL: error if named object created in while loop. Emit an error if any named 2457object is created within a While loop. If allowed, this code will generate a 2458run-time error on the second iteration of the loop when an attempt is made to 2459create the same named object twice. ACPICA bugzilla 730. 2460 2461iASL: Support absolute pathnames for include files. Add support for absolute 2462pathnames within the Include operator. previously, only relative pathnames 2463were supported. 2464 2465iASL: Enforce minimum 1 interrupt in interrupt macro and Resource Descriptor. 2466The ACPI spec requires one interrupt minimum. BZ 423 2467 2468iASL: Handle a missing ResourceSource arg, with a present SourceIndex. 2469Handles the case for the Interrupt Resource Descriptor where 2470the ResourceSource argument is omitted but ResourceSourceIndex 2471is present. Now leave room for the Index. BZ 426 2472 2473iASL: Prevent error message if CondRefOf target does not exist. Fixes cases 2474where an error message is emitted if the target does not exist. BZ 516 2475 2476iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option 2477(get ACPI tables on Windows). This was apparently broken in version 20070919. 2478 2479AcpiXtract: Handle EOF while extracting data. Correctly handle the case where 2480the EOF happens immediately after the last table in the input file. Print 2481completion message. Previously, no message was displayed in this case. 2482 2483---------------------------------------- 248401 July 2008. Summary of changes for version 20080701: 2485 24860) Git source tree / acpica.org 2487 2488Fixed a problem where a git-clone from http would not transfer the entire 2489source tree. 2490 24911) ACPI CA Core Subsystem: 2492 2493Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one 2494enable bit. Now performs a read-change-write of the enable register instead 2495of simply writing out the cached enable mask. This will prevent inadvertent 2496enabling of GPEs if a rogue GPE is received during initialization (before GPE 2497handlers are installed.) 2498 2499Implemented a copy for dynamically loaded tables. Previously, dynamically 2500loaded tables were simply mapped - but on some machines this memory is 2501corrupted after suspend. Now copy the table to a local buffer. For the 2502OpRegion case, added checksum verify. Use the table length from the table 2503header, not the region length. For the Buffer case, use the table length 2504also. Dennis Noordsij, Bob Moore. BZ 10734 2505 2506Fixed a problem where the same ACPI table could not be dynamically loaded and 2507unloaded more than once. Without this change, a table cannot be loaded again 2508once it has been loaded/unloaded one time. The current mechanism does not 2509unregister a table upon an unload. During a load, if the same table is found, 2510this no longer returns an exception. BZ 722 2511 2512Fixed a problem where the wrong descriptor length was calculated for the 2513EndTag descriptor in 64-bit mode. The "minimal" descriptors such as EndTag 2514are calculated as 12 bytes long, but the actual length in the internal 2515descriptor is 16 because of the round-up to 8 on the 64-bit build. Reported 2516by Linn Crosetto. BZ 728 2517 2518Fixed a possible memory leak in the Unload operator. The DdbHandle returned 2519by Load() did not have its reference count decremented during unload, leading 2520to a memory leak. Lin Ming. BZ 727 2521 2522Fixed a possible memory leak when deleting thermal/processor objects. Any 2523associated notify handlers (and objects) were not being deleted. Fiodor 2524Suietov. BZ 506 2525 2526Fixed the ordering of the ASCII names in the global mutex table to match the 2527actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug only. 2528Vegard Nossum. BZ 726 2529 2530Enhanced the AcpiGetObjectInfo interface to return the number of required 2531arguments if the object is a control method. Added this call to the debugger 2532so the proper number of default arguments are passed to a method. This 2533prevents a warning when executing methods from AcpiExec. 2534 2535Added a check for an invalid handle in AcpiGetObjectInfo. Return 2536AE_BAD_PARAMETER if input handle is invalid. BZ 474 2537 2538Fixed an extraneous warning from exconfig.c on the 64-bit build. 2539 2540Example Code and Data Size: These are the sizes for the OS-independent 2541acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2542debug version of the code includes the debug output trace mechanism and has a 2543much larger code and data size. 2544 2545 Previous Release: 2546 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 2547 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 2548 Current Release: 2549 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 2550 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 2551 25522) iASL Compiler/Disassembler and Tools: 2553 2554iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both 2555resource descriptor names. 2556 2557iASL: Detect invalid ASCII characters in input (windows version). Removed the 2558"-CF" flag from the flex compile, enables correct detection of non-ASCII 2559characters in the input. BZ 441 2560 2561iASL: Eliminate warning when result of LoadTable is not used. Eliminate the 2562"result of operation not used" warning when the DDB handle returned from 2563LoadTable is not used. The warning is not needed. BZ 590 2564 2565AcpiExec: Add support for dynamic table load/unload. Now calls _CFG method to 2566pass address of table to the AML. Added option to disable OpRegion simulation 2567to allow creation of an OpRegion with a real address that was passed to _CFG. 2568All of this allows testing of the Load and Unload operators from AcpiExec. 2569 2570Debugger: update tables command for unloaded tables. Handle unloaded tables 2571and use the standard table header output routine. 2572 2573---------------------------------------- 257409 June 2008. Summary of changes for version 20080609: 2575 25761) ACPI CA Core Subsystem: 2577 2578Implemented a workaround for reversed _PRT entries. A significant number of 2579BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This 2580change dynamically detects and repairs this problem. Provides compatibility 2581with MS ACPI. BZ 6859 2582 2583Simplified the internal ACPI hardware interfaces to eliminate the locking 2584flag parameter from Register Read/Write. Added a new external interface, 2585AcpiGetRegisterUnlocked. 2586 2587Fixed a problem where the invocation of a GPE control method could hang. This 2588was a regression introduced in 20080514. The new method argument count 2589validation mechanism can enter an infinite loop when a GPE method is 2590dispatched. Problem fixed by removing the obsolete code that passed GPE block 2591information to the notify handler via the control method parameter pointer. 2592 2593Fixed a problem where the _SST execution status was incorrectly returned to 2594the caller of AcpiEnterSleepStatePrep. This was a regression introduced in 259520080514. _SST is optional and a NOT_FOUND exception should never be 2596returned. BZ 716 2597 2598Fixed a problem where a deleted object could be accessed from within the AML 2599parser. This was a regression introduced in version 20080123 as a fix for the 2600Unload operator. Lin Ming. BZ 10669 2601 2602Cleaned up the debug operand dump mechanism. Eliminated unnecessary operands 2603and eliminated the use of a negative index in a loop. Operands are now 2604displayed in the correct order, not backwards. This also fixes a regression 2605introduced in 20080514 on 64-bit systems where the elimination of 2606ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ 715 2607 2608Fixed a possible memory leak in EvPciConfigRegionSetup where the error exit 2609path did not delete a locally allocated structure. 2610 2611Updated definitions for the DMAR and SRAT tables to synchronize with the 2612current specifications. Includes disassembler support. 2613 2614Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect 2615loop termination value was used. Loop terminated on iteration early, missing 2616one mutex. Linn Crosetto 2617 2618Example Code and Data Size: These are the sizes for the OS-independent 2619acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2620debug version of the code includes the debug output trace mechanism and has a 2621much larger code and data size. 2622 2623 Previous Release: 2624 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 2625 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 2626 Current Release: 2627 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 2628 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 2629 26302) iASL Compiler/Disassembler and Tools: 2631 2632Disassembler: Implemented support for EisaId() within _CID objects. Now 2633disassemble integer _CID objects back to EisaId invocations, including 2634multiple integers within _CID packages. Includes single-step support for 2635debugger also. 2636 2637Disassembler: Added support for DMAR and SRAT table definition changes. 2638 2639---------------------------------------- 264014 May 2008. Summary of changes for version 20080514: 2641 26421) ACPI CA Core Subsystem: 2643 2644Fixed a problem where GPEs were enabled too early during the ACPICA 2645initialization. This could lead to "handler not installed" errors on some 2646machines. Moved GPE enable until after _REG/_STA/_INI methods are run. This 2647ensures that all operation regions and devices throughout the namespace have 2648been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916. 2649 2650Implemented a change to the enter sleep code. Moved execution of the _GTS 2651method to just before setting sleep enable bit. The execution was moved from 2652AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed 2653immediately before the SLP_EN bit is set, as per the ACPI specification. 2654Luming Yu, BZ 1653. 2655 2656Implemented a fix to disable unknown GPEs (2nd version). Now always disable 2657the GPE, even if ACPICA thinks that that it is already disabled. It is 2658possible that the AML or some other code has enabled the GPE unbeknownst to 2659the ACPICA code. 2660 2661Fixed a problem with the Field operator where zero-length fields would return 2662an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length ASL 2663field declarations in Field(), BankField(), and IndexField(). BZ 10606. 2664 2665Implemented a fix for the Load operator, now load the table at the namespace 2666root. This reverts a change introduced in version 20071019. The table is now 2667loaded at the namespace root even though this goes against the ACPI 2668specification. This provides compatibility with other ACPI implementations. 2669The ACPI specification will be updated to reflect this in ACPI 4.0. Lin Ming. 2670 2671Fixed a problem where ACPICA would not Load() tables with unusual signatures. 2672Now ignore ACPI table signature for Load() operator. Only "SSDT" is 2673acceptable to the ACPI spec, but tables are seen with OEMx and null sigs. 2674Therefore, signature validation is worthless. Apparently MS ACPI accepts such 2675signatures, ACPICA must be compatible. BZ 10454. 2676 2677Fixed a possible negative array index in AcpiUtValidateException. Added NULL 2678fields to the exception string arrays to eliminate a -1 subtraction on the 2679SubStatus field. 2680 2681Updated the debug tracking macros to reduce overall code and data size. 2682Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings 2683instead of pointers to static strings. Jan Beulich and Bob Moore. 2684 2685Implemented argument count checking in control method invocation via 2686AcpiEvaluateObject. Now emit an error if too few arguments, warning if too 2687many. This applies only to extern programmatic control method execution, not 2688method-to-method calls within the AML. Lin Ming. 2689 2690Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is no 2691longer needed, especially with the removal of 16-bit support. It was replaced 2692mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64 bit on 269332/64-bit platforms is required. 2694 2695Added the C const qualifier for appropriate string constants -- mostly 2696MODULE_NAME and printf format strings. Jan Beulich. 2697 2698Example Code and Data Size: These are the sizes for the OS-independent 2699acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2700debug version of the code includes the debug output trace mechanism and has a 2701much larger code and data size. 2702 2703 Previous Release: 2704 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 2705 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 2706 Current Release: 2707 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 2708 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 2709 27102) iASL Compiler/Disassembler and Tools: 2711 2712Implemented ACPI table revision ID validation in the disassembler. Zero is 2713always invalid. For DSDTs, the ID controls the interpreter integer width. 1 2714means 32-bit and this is unusual. 2 or greater is 64-bit. 2715 2716---------------------------------------- 271721 March 2008. Summary of changes for version 20080321: 2718 27191) ACPI CA Core Subsystem: 2720 2721Implemented an additional change to the GPE support in order to suppress 2722spurious or stray GPEs. The AcpiEvDisableGpe function will now permanently 2723disable incoming GPEs that are neither enabled nor disabled -- meaning that 2724the GPE is unknown to the system. This should prevent future interrupt floods 2725from that GPE. BZ 6217 (Zhang Rui) 2726 2727Fixed a problem where NULL package elements were not returned to the 2728AcpiEvaluateObject interface correctly. The element was simply ignored 2729instead of returning a NULL ACPI_OBJECT package element, potentially causing 2730a buffer overflow and/or confusing the caller who expected a fixed number of 2731elements. BZ 10132 (Lin Ming, Bob Moore) 2732 2733Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word, Dword, 2734Qword), Field, BankField, and IndexField operators when invoked from inside 2735an executing control method. In this case, these operators created namespace 2736nodes that were incorrectly left marked as permanent nodes instead of 2737temporary nodes. This could cause a problem if there is race condition 2738between an exiting control method and a running namespace walk. (Reported by 2739Linn Crosetto) 2740 2741Fixed a problem where the CreateField and CreateXXXField operators would 2742incorrectly allow duplicate names (the name of the field) with no exception 2743generated. 2744 2745Implemented several changes for Notify handling. Added support for new Notify 2746values (ACPI 2.0+) and improved the Notify debug output. Notify on 2747PowerResource objects is no longer allowed, as per the ACPI specification. 2748(Bob Moore, Zhang Rui) 2749 2750All Reference Objects returned via the AcpiEvaluateObject interface are now 2751marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved for 2752NULL objects - either NULL package elements or unresolved named references. 2753 2754Fixed a problem where an extraneous debug message was produced for package 2755objects (when debugging enabled). The message "Package List length larger 2756than NumElements count" is now produced in the correct case, and is now an 2757error message rather than a debug message. Added a debug message for the 2758opposite case, where NumElements is larger than the Package List (the package 2759will be padded out with NULL elements as per the ACPI spec.) 2760 2761Implemented several improvements for the output of the ASL "Debug" object to 2762clarify and keep all data for a given object on one output line. 2763 2764Fixed two size calculation issues with the variable-length Start Dependent 2765resource descriptor. 2766 2767Example Code and Data Size: These are the sizes for the OS-independent 2768acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2769debug version of the code includes the debug output trace mechanism and has 2770a much larger code and data size. 2771 2772 Previous Release: 2773 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 2774 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 2775 Current Release: 2776 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 2777 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 2778 27792) iASL Compiler/Disassembler and Tools: 2780 2781Fixed a problem with the use of the Switch operator where execution of the 2782containing method by multiple concurrent threads could cause an 2783AE_ALREADY_EXISTS exception. This is caused by the fact that there is no 2784actual Switch opcode, it must be simulated with local named temporary 2785variables and if/else pairs. The solution chosen was to mark any method that 2786uses Switch as Serialized, thus preventing multiple thread entries. BZ 469. 2787 2788---------------------------------------- 278913 February 2008. Summary of changes for version 20080213: 2790 27911) ACPI CA Core Subsystem: 2792 2793Implemented another MS compatibility design change for GPE/Notify handling. 2794GPEs are now cleared/enabled asynchronously to allow all pending notifies to 2795complete first. It is expected that the OSL will queue the enable request 2796behind all pending notify requests (may require changes to the local host OSL 2797in AcpiOsExecute). Alexey Starikovskiy. 2798 2799Fixed a problem where buffer and package objects passed as arguments to a 2800control method via the external AcpiEvaluateObject interface could cause an 2801AE_AML_INTERNAL exception depending on the order and type of operators 2802executed by the target control method. 2803 2804Fixed a problem where resource descriptor size optimization could cause a 2805problem when a _CRS resource template is passed to a _SRS method. The _SRS 2806resource template must use the same descriptors (with the same size) as 2807returned from _CRS. This change affects the following resource descriptors: 2808IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ 9487) 2809 2810Fixed a problem where a CopyObject to RegionField, BankField, and IndexField 2811objects did not perform an implicit conversion as it should. These types must 2812retain their initial type permanently as per the ACPI specification. However, 2813a CopyObject to all other object types should not perform an implicit 2814conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388 2815 2816Fixed a problem with the AcpiGetDevices interface where the mechanism to 2817match device CIDs did not examine the entire list of available CIDs, but 2818instead aborted on the first non-matching CID. Andrew Patterson. 2819 2820Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro was 2821inadvertently changed to return a 16-bit value instead of a 32-bit value, 2822truncating the upper dword of a 64-bit value. This macro is only used to 2823display debug output, so no incorrect calculations were made. Also, 2824reimplemented the macro so that a 64-bit shift is not performed by 2825inefficient compilers. 2826 2827Added missing va_end statements that should correspond with each va_start 2828statement. 2829 2830Example Code and Data Size: These are the sizes for the OS-independent 2831acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2832debug version of the code includes the debug output trace mechanism and has 2833a much larger code and data size. 2834 2835 Previous Release: 2836 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 2837 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 2838 Current Release: 2839 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 2840 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 2841 28422) iASL Compiler/Disassembler and Tools: 2843 2844Implemented full disassembler support for the following new ACPI tables: 2845BERT, EINJ, and ERST. Implemented partial disassembler support for the 2846complicated HEST table. These tables support the Windows Hardware Error 2847Architecture (WHEA). 2848 2849---------------------------------------- 285023 January 2008. Summary of changes for version 20080123: 2851 28521) ACPI CA Core Subsystem: 2853 2854Added the 2008 copyright to all module headers and signons. This affects 2855virtually every file in the ACPICA core subsystem, the iASL compiler, and 2856the tools/utilities. 2857 2858Fixed a problem with the SizeOf operator when used with Package and Buffer 2859objects. These objects have deferred execution for some arguments, and the 2860execution is now completed before the SizeOf is executed. This problem caused 2861unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore) BZ 28629558 2863 2864Implemented an enhancement to the interpreter "slack mode". In the absence of 2865an explicit return or an implicitly returned object from the last executed 2866opcode, a control method will now implicitly return an integer of value 0 for 2867Microsoft compatibility. (Lin Ming) BZ 392 2868 2869Fixed a problem with the Load operator where an exception was not returned in 2870the case where the table is already loaded. (Lin Ming) BZ 463 2871 2872Implemented support for the use of DDBHandles as an Indexed Reference, as per 2873the ACPI spec. (Lin Ming) BZ 486 2874 2875Implemented support for UserTerm (Method invocation) for the Unload operator 2876as per the ACPI spec. (Lin Ming) BZ 580 2877 2878Fixed a problem with the LoadTable operator where the OemId and OemTableId 2879input strings could cause unexpected failures if they were shorter than the 2880maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576 2881 2882Implemented support for UserTerm (Method invocation) for the Unload operator 2883as per the ACPI spec. (Lin Ming) BZ 580 2884 2885Implemented header file support for new ACPI tables - BERT, ERST, EINJ, HEST, 2886IBFT, UEFI, WDAT. Disassembler support is forthcoming. 2887 2888Example Code and Data Size: These are the sizes for the OS-independent 2889acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2890debug version of the code includes the debug output trace mechanism and has 2891a much larger code and data size. 2892 2893 Previous Release: 2894 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 2895 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 2896 Current Release: 2897 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 2898 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 2899 29002) iASL Compiler/Disassembler and Tools: 2901 2902Implemented support in the disassembler for checksum validation on incoming 2903binary DSDTs and SSDTs. If incorrect, a message is displayed within the table 2904header dump at the start of the disassembly. 2905 2906Implemented additional debugging information in the namespace listing file 2907created during compilation. In addition to the namespace hierarchy, the full 2908pathname to each namespace object is displayed. 2909 2910Fixed a problem with the disassembler where invalid ACPI tables could cause 2911faults or infinite loops. 2912 2913Fixed an unexpected parse error when using the optional "parameter types" 2914list in a control method declaration. (Lin Ming) BZ 397 2915 2916Fixed a problem where two External declarations with the same name did not 2917cause an error (Lin Ming) BZ 509 2918 2919Implemented support for full TermArgs (adding Argx, Localx and method 2920invocation) for the ParameterData parameter to the LoadTable operator. (Lin 2921Ming) BZ 583,587 2922 2923---------------------------------------- 292419 December 2007. Summary of changes for version 20071219: 2925 29261) ACPI CA Core Subsystem: 2927 2928Implemented full support for deferred execution for the TermArg string 2929arguments for DataTableRegion. This enables forward references and full 2930operand resolution for the three string arguments. Similar to OperationRegion 2931deferred argument execution.) Lin Ming. BZ 430 2932 2933Implemented full argument resolution support for the BankValue argument to 2934BankField. Previously, only constants were supported, now any TermArg may be 2935used. Lin Ming BZ 387, 393 2936 2937Fixed a problem with AcpiGetDevices where the search of a branch of the 2938device tree could be terminated prematurely. In accordance with the ACPI 2939specification, the search down the current branch is terminated if a device 2940is both not present and not functional (instead of just not present.) Yakui 2941Zhao. 2942 2943Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly if 2944the underlying AML code changed the GPE enable registers. Now, any unknown 2945incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately disabled 2946instead of simply ignored. Rui Zhang. 2947 2948Fixed a problem with Index Fields where the Index register was incorrectly 2949limited to a maximum of 32 bits. Now any size may be used. 2950 2951Fixed a couple memory leaks associated with "implicit return" objects when 2952the AML Interpreter slack mode is enabled. Lin Ming BZ 349 2953 2954Example Code and Data Size: These are the sizes for the OS-independent 2955acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2956debug version of the code includes the debug output trace mechanism and has 2957a much larger code and data size. 2958 2959 Previous Release: 2960 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 2961 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 2962 Current Release: 2963 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 2964 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 2965 2966---------------------------------------- 296714 November 2007. Summary of changes for version 20071114: 2968 29691) ACPI CA Core Subsystem: 2970 2971Implemented event counters for each of the Fixed Events, the ACPI SCI 2972(interrupt) itself, and control methods executed. Named 2973AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively. These 2974should be useful for debugging and statistics. 2975 2976Implemented a new external interface, AcpiGetStatistics, to retrieve the 2977contents of the various event counters. Returns the current values for 2978AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and 2979AcpiMethodCount. The interface can be expanded in the future if new counters 2980are added. Device drivers should use this interface rather than access the 2981counters directly. 2982 2983Fixed a problem with the FromBCD and ToBCD operators. With some compilers, 2984the ShortDivide function worked incorrectly, causing problems with the BCD 2985functions with large input values. A truncation from 64-bit to 32-bit 2986inadvertently occurred. Internal BZ 435. Lin Ming 2987 2988Fixed a problem with Index references passed as method arguments. References 2989passed as arguments to control methods were dereferenced immediately (before 2990control was passed to the called method). The references are now correctly 2991passed directly to the called method. BZ 5389. Lin Ming 2992 2993Fixed a problem with CopyObject used in conjunction with the Index operator. 2994The reference was incorrectly dereferenced before the copy. The reference is 2995now correctly copied. BZ 5391. Lin Ming 2996 2997Fixed a problem with Control Method references within Package objects. These 2998references are now correctly generated. This completes the package 2999construction overhaul that began in version 20071019. 3000 3001Example Code and Data Size: These are the sizes for the OS-independent 3002acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3003debug version of the code includes the debug output trace mechanism and has 3004a much larger code and data size. 3005 3006 Previous Release: 3007 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 3008 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 3009 Current Release: 3010 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 3011 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 3012 3013 30142) iASL Compiler/Disassembler and Tools: 3015 3016The AcpiExec utility now installs handlers for all of the predefined 3017Operation Region types. New types supported are: PCI_Config, CMOS, and 3018PCIBARTarget. 3019 3020Fixed a problem with the 64-bit version of AcpiExec where the extended (64- 3021bit) address fields for the DSDT and FACS within the FADT were not being 3022used, causing truncation of the upper 32-bits of these addresses. Lin Ming 3023and Bob Moore 3024 3025---------------------------------------- 302619 October 2007. Summary of changes for version 20071019: 3027 30281) ACPI CA Core Subsystem: 3029 3030Fixed a problem with the Alias operator when the target of the alias is a 3031named ASL operator that opens a new scope -- Scope, Device, PowerResource, 3032Processor, and ThermalZone. In these cases, any children of the original 3033operator could not be accessed via the alias, potentially causing unexpected 3034AE_NOT_FOUND exceptions. (BZ 9067) 3035 3036Fixed a problem with the Package operator where all named references were 3037created as object references and left otherwise unresolved. According to the 3038ACPI specification, a Package can only contain Data Objects or references to 3039control methods. The implication is that named references to Data Objects 3040(Integer, Buffer, String, Package, BufferField, Field) should be resolved 3041immediately upon package creation. This is the approach taken with this 3042change. References to all other named objects (Methods, Devices, Scopes, 3043etc.) are all now properly created as reference objects. (BZ 5328) 3044 3045Reverted a change to Notify handling that was introduced in version 304620070508. This version changed the Notify handling from asynchronous to 3047fully synchronous (Device driver Notify handling with respect to the Notify 3048ASL operator). It was found that this change caused more problems than it 3049solved and was removed by most users. 3050 3051Fixed a problem with the Increment and Decrement operators where the type of 3052the target object could be unexpectedly and incorrectly changed. (BZ 353) 3053Lin Ming. 3054 3055Fixed a problem with the Load and LoadTable operators where the table 3056location within the namespace was ignored. Instead, the table was always 3057loaded into the root or current scope. Lin Ming. 3058 3059Fixed a problem with the Load operator when loading a table from a buffer 3060object. The input buffer was prematurely zeroed and/or deleted. (BZ 577) 3061 3062Fixed a problem with the Debug object where a store of a DdbHandle reference 3063object to the Debug object could cause a fault. 3064 3065Added a table checksum verification for the Load operator, in the case where 3066the load is from a buffer. (BZ 578). 3067 3068Implemented additional parameter validation for the LoadTable operator. The 3069length of the input strings SignatureString, OemIdString, and OemTableId are 3070now checked for maximum lengths. (BZ 582) Lin Ming. 3071 3072Example Code and Data Size: These are the sizes for the OS-independent 3073acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3074debug version of the code includes the debug output trace mechanism and has 3075a much larger code and data size. 3076 3077 Previous Release: 3078 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 3079 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 3080 Current Release: 3081 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 3082 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 3083 3084 30852) iASL Compiler/Disassembler: 3086 3087Fixed a problem where if a single file was specified and the file did not 3088exist, no error message was emitted. (Introduced with wildcard support in 3089version 20070917.) 3090 3091---------------------------------------- 309219 September 2007. Summary of changes for version 20070919: 3093 30941) ACPI CA Core Subsystem: 3095 3096Designed and implemented new external interfaces to install and remove 3097handlers for ACPI table-related events. Current events that are defined are 3098LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as 3099they are dynamically loaded and unloaded. See AcpiInstallTableHandler and 3100AcpiRemoveTableHandler. (Lin Ming and Bob Moore) 3101 3102Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag 3103(acpi_serialized option on Linux) could cause some systems to hang during 3104initialization. (Bob Moore) BZ 8171 3105 3106Fixed a problem where objects of certain types (Device, ThermalZone, 3107Processor, PowerResource) can be not found if they are declared and 3108referenced from within the same control method (Lin Ming) BZ 341 3109 3110Example Code and Data Size: These are the sizes for the OS-independent 3111acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3112debug version of the code includes the debug output trace mechanism and has 3113a much larger code and data size. 3114 3115 Previous Release: 3116 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 3117 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 3118 Current Release: 3119 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 3120 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 3121 3122 31232) iASL Compiler/Disassembler: 3124 3125Implemented support to allow multiple files to be compiled/disassembled in a 3126single invocation. This includes command line wildcard support for both the 3127Windows and Unix versions of the compiler. This feature simplifies the 3128disassembly and compilation of multiple ACPI tables in a single directory. 3129 3130---------------------------------------- 313108 May 2007. Summary of changes for version 20070508: 3132 31331) ACPI CA Core Subsystem: 3134 3135Implemented a Microsoft compatibility design change for the handling of the 3136Notify AML operator. Previously, notify handlers were dispatched and 3137executed completely asynchronously in a deferred thread. The new design 3138still executes the notify handlers in a different thread, but the original 3139thread that executed the Notify() now waits at a synchronization point for 3140the notify handler to complete. Some machines depend on a synchronous Notify 3141operator in order to operate correctly. 3142 3143Implemented support to allow Package objects to be passed as method 3144arguments to the external AcpiEvaluateObject interface. Previously, this 3145would return the AE_NOT_IMPLEMENTED exception. This feature had not been 3146implemented since there were no reserved control methods that required it 3147until recently. 3148 3149Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs that 3150contained invalid non-zero values in reserved fields could cause later 3151failures because these fields have meaning in later revisions of the FADT. 3152For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The fields 3153are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.) 3154 3155Fixed a problem where the Global Lock handle was not properly updated if a 3156thread that acquired the Global Lock via executing AML code then attempted 3157to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by Joe 3158Liu. 3159 3160Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list 3161could be corrupted if the interrupt being removed was at the head of the 3162list. Reported by Linn Crosetto. 3163 3164Example Code and Data Size: These are the sizes for the OS-independent 3165acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3166debug version of the code includes the debug output trace mechanism and has 3167a much larger code and data size. 3168 3169 Previous Release: 3170 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 3171 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 3172 Current Release: 3173 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 3174 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 3175 3176---------------------------------------- 317720 March 2007. Summary of changes for version 20070320: 3178 31791) ACPI CA Core Subsystem: 3180 3181Implemented a change to the order of interpretation and evaluation of AML 3182operand objects within the AML interpreter. The interpreter now evaluates 3183operands in the order that they appear in the AML stream (and the 3184corresponding ASL code), instead of in the reverse order (after the entire 3185operand list has been parsed). The previous behavior caused several subtle 3186incompatibilities with the Microsoft AML interpreter as well as being 3187somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov. 3188 3189Implemented a change to the ACPI Global Lock support. All interfaces to the 3190global lock now allow the same thread to acquire the lock multiple times. 3191This affects the AcpiAcquireGlobalLock external interface to the global lock 3192as well as the internal use of the global lock to support AML fields -- a 3193control method that is holding the global lock can now simultaneously access 3194AML fields that require global lock protection. Previously, in both cases, 3195this would have resulted in an AE_ALREADY_ACQUIRED exception. The change to 3196AcpiAcquireGlobalLock is of special interest to drivers for the Embedded 3197Controller. There is no change to the behavior of the AML Acquire operator, 3198as this can already be used to acquire a mutex multiple times by the same 3199thread. BZ 8066. With assistance from Alexey Starikovskiy. 3200 3201Fixed a problem where invalid objects could be referenced in the AML 3202Interpreter after error conditions. During operand evaluation, ensure that 3203the internal "Return Object" field is cleared on error and only valid 3204pointers are stored there. Caused occasional access to deleted objects that 3205resulted in "large reference count" warning messages. Valery Podrezov. 3206 3207Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur on 3208deeply nested control method invocations. BZ 7873, local BZ 487. Valery 3209Podrezov. 3210 3211Fixed an internal problem with the handling of result objects on the 3212interpreter result stack. BZ 7872. Valery Podrezov. 3213 3214Removed obsolete code that handled the case where AML_NAME_OP is the target 3215of a reference (Reference.Opcode). This code was no longer necessary. BZ 32167874. Valery Podrezov. 3217 3218Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This was a 3219remnant from the previously discontinued 16-bit support. 3220 3221Example Code and Data Size: These are the sizes for the OS-independent 3222acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3223debug version of the code includes the debug output trace mechanism and has 3224a much larger code and data size. 3225 3226 Previous Release: 3227 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 3228 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 3229 Current Release: 3230 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 3231 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 3232 3233---------------------------------------- 323426 January 2007. Summary of changes for version 20070126: 3235 32361) ACPI CA Core Subsystem: 3237 3238Added the 2007 copyright to all module headers and signons. This affects 3239virtually every file in the ACPICA core subsystem, the iASL compiler, and 3240the utilities. 3241 3242Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable 3243during a table load. A bad pointer was passed in the case where the DSDT is 3244overridden, causing a fault in this case. 3245 3246Example Code and Data Size: These are the sizes for the OS-independent 3247acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3248debug version of the code includes the debug output trace mechanism and has 3249a much larger code and data size. 3250 3251 Previous Release: 3252 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 3253 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 3254 Current Release: 3255 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 3256 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 3257 3258---------------------------------------- 325915 December 2006. Summary of changes for version 20061215: 3260 32611) ACPI CA Core Subsystem: 3262 3263Support for 16-bit ACPICA has been completely removed since it is no longer 3264necessary and it clutters the code. All 16-bit macros, types, and 3265conditional compiles have been removed, cleaning up and simplifying the code 3266across the entire subsystem. DOS support is no longer needed since the 3267bootable Linux firmware kit is now available. 3268 3269The handler for the Global Lock is now removed during AcpiTerminate to 3270enable a clean subsystem restart, via the implementation of the 3271AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz, 3272HP) 3273 3274Implemented enhancements to the multithreading support within the debugger 3275to enable improved multithreading debugging and evaluation of the subsystem. 3276(Valery Podrezov) 3277 3278Debugger: Enhanced the Statistics/Memory command to emit the total (maximum) 3279memory used during the execution, as well as the maximum memory consumed by 3280each of the various object types. (Valery Podrezov) 3281 3282Example Code and Data Size: These are the sizes for the OS-independent 3283acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3284debug version of the code includes the debug output trace mechanism and has 3285a much larger code and data size. 3286 3287 Previous Release: 3288 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 3289 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 3290 Current Release: 3291 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 3292 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 3293 3294 32952) iASL Compiler/Disassembler and Tools: 3296 3297AcpiExec: Implemented a new option (-m) to display full memory use 3298statistics upon subsystem/program termination. (Valery Podrezov) 3299 3300---------------------------------------- 330109 November 2006. Summary of changes for version 20061109: 3302 33031) ACPI CA Core Subsystem: 3304 3305Optimized the Load ASL operator in the case where the source operand is an 3306operation region. Simply map the operation region memory, instead of 3307performing a bytewise read. (Region must be of type SystemMemory, see 3308below.) 3309 3310Fixed the Load ASL operator for the case where the source operand is a 3311region field. A buffer object is also allowed as the source operand. BZ 480 3312 3313Fixed a problem where the Load ASL operator allowed the source operand to be 3314an operation region of any type. It is now restricted to regions of type 3315SystemMemory, as per the ACPI specification. BZ 481 3316 3317Additional cleanup and optimizations for the new Table Manager code. 3318 3319AcpiEnable will now fail if all of the required ACPI tables are not loaded 3320(FADT, FACS, DSDT). BZ 477 3321 3322Added #pragma pack(8/4) to acobject.h to ensure that the structures in this 3323header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been 3324manually optimized to be aligned and will not work if it is byte-packed. 3325 3326Example Code and Data Size: These are the sizes for the OS-independent 3327acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3328debug version of the code includes the debug output trace mechanism and has 3329a much larger code and data size. 3330 3331 Previous Release: 3332 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 3333 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 3334 Current Release: 3335 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 3336 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 3337 3338 33392) iASL Compiler/Disassembler and Tools: 3340 3341Fixed a problem where the presence of the _OSI predefined control method 3342within complex expressions could cause an internal compiler error. 3343 3344AcpiExec: Implemented full region support for multiple address spaces. 3345SpaceId is now part of the REGION object. BZ 429 3346 3347---------------------------------------- 334811 October 2006. Summary of changes for version 20061011: 3349 33501) ACPI CA Core Subsystem: 3351 3352Completed an AML interpreter performance enhancement for control method 3353execution. Previously a 2-pass parse/execution, control methods are now 3354completely parsed and executed in a single pass. This improves overall 3355interpreter performance by ~25%, reduces code size, and reduces CPU stack 3356use. (Valery Podrezov + interpreter changes in version 20051202 that 3357eliminated namespace loading during the pass one parse.) 3358 3359Implemented _CID support for PCI Root Bridge detection. If the _HID does not 3360match the predefined PCI Root Bridge IDs, the _CID list (if present) is now 3361obtained and also checked for an ID match. 3362 3363Implemented additional support for the PCI _ADR execution: upsearch until a 3364device scope is found before executing _ADR. This allows PCI_Config 3365operation regions to be declared locally within control methods underneath 3366PCI device objects. 3367 3368Fixed a problem with a possible race condition between threads executing 3369AcpiWalkNamespace and the AML interpreter. This condition was removed by 3370modifying AcpiWalkNamespace to (by default) ignore all temporary namespace 3371entries created during any concurrent control method execution. An 3372additional namespace race condition is known to exist between 3373AcpiWalkNamespace and the Load/Unload ASL operators and is still under 3374investigation. 3375 3376Restructured the AML ParseLoop function, breaking it into several 3377subfunctions in order to reduce CPU stack use and improve maintainability. 3378(Mikhail Kouzmich) 3379 3380AcpiGetHandle: Fix for parameter validation to detect invalid combinations 3381of prefix handle and pathname. BZ 478 3382 3383Example Code and Data Size: These are the sizes for the OS-independent 3384acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3385debug version of the code includes the debug output trace mechanism and has 3386a much larger code and data size. 3387 3388 Previous Release: 3389 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 3390 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 3391 Current Release: 3392 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 3393 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 3394 33952) iASL Compiler/Disassembler and Tools: 3396 3397Ported the -g option (get local ACPI tables) to the new ACPICA Table Manager 3398to restore original behavior. 3399 3400---------------------------------------- 340127 September 2006. Summary of changes for version 20060927: 3402 34031) ACPI CA Core Subsystem: 3404 3405Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister. 3406These functions now use a spinlock for mutual exclusion and the interrupt 3407level indication flag is not needed. 3408 3409Fixed a problem with the Global Lock where the lock could appear to be 3410obtained before it is actually obtained. The global lock semaphore was 3411inadvertently created with one unit instead of zero units. (BZ 464) Fiodor 3412Suietov. 3413 3414Fixed a possible memory leak and fault in AcpiExResolveObjectToValue during 3415a read from a buffer or region field. (BZ 458) Fiodor Suietov. 3416 3417Example Code and Data Size: These are the sizes for the OS-independent 3418acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3419debug version of the code includes the debug output trace mechanism and has 3420a much larger code and data size. 3421 3422 Previous Release: 3423 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 3424 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 3425 Current Release: 3426 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 3427 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 3428 3429 34302) iASL Compiler/Disassembler and Tools: 3431 3432Fixed a compilation problem with the pre-defined Resource Descriptor field 3433names where an "object does not exist" error could be incorrectly generated 3434if the parent ResourceTemplate pathname places the template within a 3435different namespace scope than the current scope. (BZ 7212) 3436 3437Fixed a problem where the compiler could hang after syntax errors detected 3438in an ElseIf construct. (BZ 453) 3439 3440Fixed a problem with the AmlFilename parameter to the DefinitionBlock() 3441operator. An incorrect output filename was produced when this parameter was 3442a null string (""). Now, the original input filename is used as the AML 3443output filename, with an ".aml" extension. 3444 3445Implemented a generic batch command mode for the AcpiExec utility (execute 3446any AML debugger command) (Valery Podrezov). 3447 3448---------------------------------------- 344912 September 2006. Summary of changes for version 20060912: 3450 34511) ACPI CA Core Subsystem: 3452 3453Enhanced the implementation of the "serialized mode" of the interpreter 3454(enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is 3455specified, instead of creating a serialization semaphore per control method, 3456the interpreter lock is simply no longer released before a blocking 3457operation during control method execution. This effectively makes the AML 3458Interpreter single-threaded. The overhead of a semaphore per-method is 3459eliminated. 3460 3461Fixed a regression where an error was no longer emitted if a control method 3462attempts to create 2 objects of the same name. This once again returns 3463AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism that 3464will dynamically serialize the control method to possible prevent future 3465errors. (BZ 440) 3466 3467Integrated a fix for a problem with PCI Express HID detection in the PCI 3468Config Space setup procedure. (BZ 7145) 3469 3470Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the 3471AcpiHwInitialize function - the FADT registers are now validated when the 3472table is loaded. 3473 3474Added two new warnings during FADT verification - 1) if the FADT is larger 3475than the largest known FADT version, and 2) if there is a mismatch between a 347632-bit block address and the 64-bit X counterpart (when both are non-zero.) 3477 3478Example Code and Data Size: These are the sizes for the OS-independent 3479acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3480debug version of the code includes the debug output trace mechanism and has 3481a much larger code and data size. 3482 3483 Previous Release: 3484 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 3485 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 3486 Current Release: 3487 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 3488 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 3489 3490 34912) iASL Compiler/Disassembler and Tools: 3492 3493Fixed a problem with the implementation of the Switch() operator where the 3494temporary variable was declared too close to the actual Switch, instead of 3495at method level. This could cause a problem if the Switch() operator is 3496within a while loop, causing an error on the second iteration. (BZ 460) 3497 3498Disassembler - fix for error emitted for unknown type for target of scope 3499operator. Now, ignore it and continue. 3500 3501Disassembly of an FADT now verifies the input FADT and reports any errors 3502found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs. 3503 3504Disassembly of raw data buffers with byte initialization data now prefixes 3505each output line with the current buffer offset. 3506 3507Disassembly of ASF! table now includes all variable-length data fields at 3508the end of some of the subtables. 3509 3510The disassembler now emits a comment if a buffer appears to be a 3511ResourceTemplate, but cannot be disassembled as such because the EndTag does 3512not appear at the very end of the buffer. 3513 3514AcpiExec - Added the "-t" command line option to enable the serialized mode 3515of the AML interpreter. 3516 3517---------------------------------------- 351831 August 2006. Summary of changes for version 20060831: 3519 35201) ACPI CA Core Subsystem: 3521 3522Miscellaneous fixes for the Table Manager: 3523- Correctly initialize internal common FADT for all 64-bit "X" fields 3524- Fixed a couple table mapping issues during table load 3525- Fixed a couple alignment issues for IA64 3526- Initialize input array to zero in AcpiInitializeTables 3527- Additional parameter validation for AcpiGetTable, AcpiGetTableHeader, 3528AcpiGetTableByIndex 3529 3530Change for GPE support: when a "wake" GPE is received, all wake GPEs are now 3531immediately disabled to prevent the waking GPE from firing again and to 3532prevent other wake GPEs from interrupting the wake process. 3533 3534Added the AcpiGpeCount global that tracks the number of processed GPEs, to 3535be used for debugging systems with a large number of ACPI interrupts. 3536 3537Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in 3538both the ACPICA headers and the disassembler. 3539 3540Example Code and Data Size: These are the sizes for the OS-independent 3541acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3542debug version of the code includes the debug output trace mechanism and has 3543a much larger code and data size. 3544 3545 Previous Release: 3546 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 3547 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 3548 Current Release: 3549 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 3550 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 3551 3552 35532) iASL Compiler/Disassembler and Tools: 3554 3555Disassembler support for the DMAR ACPI table. 3556 3557---------------------------------------- 355823 August 2006. Summary of changes for version 20060823: 3559 35601) ACPI CA Core Subsystem: 3561 3562The Table Manager component has been completely redesigned and 3563reimplemented. The new design is much simpler, and reduces the overall code 3564and data size of the kernel-resident ACPICA by approximately 5%. Also, it is 3565now possible to obtain the ACPI tables very early during kernel 3566initialization, even before dynamic memory management is initialized. 3567(Alexey Starikovskiy, Fiodor Suietov, Bob Moore) 3568 3569Obsolete ACPICA interfaces: 3570 3571- AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel init 3572time). 3573- AcpiLoadTable: Not needed. 3574- AcpiUnloadTable: Not needed. 3575 3576New ACPICA interfaces: 3577 3578- AcpiInitializeTables: Must be called before the table manager can be used. 3579- AcpiReallocateRootTable: Used to transfer the root table to dynamically 3580allocated memory after it becomes available. 3581- AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI tables 3582in the RSDT/XSDT. 3583 3584Other ACPICA changes: 3585 3586- AcpiGetTableHeader returns the actual mapped table header, not a copy. Use 3587AcpiOsUnmapMemory to free this mapping. 3588- AcpiGetTable returns the actual mapped table. The mapping is managed 3589internally and must not be deleted by the caller. Use of this interface 3590causes no additional dynamic memory allocation. 3591- AcpiFindRootPointer: Support for physical addressing has been eliminated, 3592it appeared to be unused. 3593- The interface to AcpiOsMapMemory has changed to be consistent with the 3594other allocation interfaces. 3595- The interface to AcpiOsGetRootPointer has changed to eliminate unnecessary 3596parameters. 3597- ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on 64- 3598bit platforms. Was previously 64 bits on all platforms. 3599- The interface to the ACPI Global Lock acquire/release macros have changed 3600slightly since ACPICA no longer keeps a local copy of the FACS with a 3601constructed pointer to the actual global lock. 3602 3603Porting to the new table manager: 3604 3605- AcpiInitializeTables: Must be called once, and can be called anytime 3606during the OS initialization process. It allows the host to specify an area 3607of memory to be used to store the internal version of the RSDT/XSDT (root 3608table). This allows the host to access ACPI tables before memory management 3609is initialized and running. 3610- AcpiReallocateRootTable: Can be called after memory management is running 3611to copy the root table to a dynamically allocated array, freeing up the 3612scratch memory specified in the call to AcpiInitializeTables. 3613- AcpiSubsystemInitialize: This existing interface is independent of the 3614Table Manager, and does not have to be called before the Table Manager can 3615be used, it only must be called before the rest of ACPICA can be used. 3616- ACPI Tables: Some changes have been made to the names and structure of the 3617actbl.h and actbl1.h header files and may require changes to existing code. 3618For example, bitfields have been completely removed because of their lack of 3619portability across C compilers. 3620- Update interfaces to the Global Lock acquire/release macros if local 3621versions are used. (see acwin.h) 3622 3623Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c 3624 3625New files: tbfind.c 3626 3627Example Code and Data Size: These are the sizes for the OS-independent 3628acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3629debug version of the code includes the debug output trace mechanism and has 3630a much larger code and data size. 3631 3632 Previous Release: 3633 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 3634 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 3635 Current Release: 3636 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 3637 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 3638 3639 36402) iASL Compiler/Disassembler and Tools: 3641 3642No changes for this release. 3643 3644---------------------------------------- 364521 July 2006. Summary of changes for version 20060721: 3646 36471) ACPI CA Core Subsystem: 3648 3649The full source code for the ASL test suite used to validate the iASL 3650compiler and the ACPICA core subsystem is being released with the ACPICA 3651source for the first time. The source is contained in a separate package and 3652consists of over 1100 files that exercise all ASL/AML operators. The package 3653should appear on the Intel/ACPI web site shortly. (Valery Podrezov, Fiodor 3654Suietov) 3655 3656Completed a new design and implementation for support of the ACPI Global 3657Lock. On the OS side, the global lock is now treated as a standard AML 3658mutex. Previously, multiple OS threads could "acquire" the global lock 3659simultaneously. However, this could cause the BIOS to be starved out of the 3660lock - especially in cases such as the Embedded Controller driver where 3661there is a tight coupling between the OS and the BIOS. 3662 3663Implemented an optimization for the ACPI Global Lock interrupt mechanism. 3664The Global Lock interrupt handler no longer queues the execution of a 3665separate thread to signal the global lock semaphore. Instead, the semaphore 3666is signaled directly from the interrupt handler. 3667 3668Implemented support within the AML interpreter for package objects that 3669contain a larger AML length (package list length) than the package element 3670count. In this case, the length of the package is truncated to match the 3671package element count. Some BIOS code apparently modifies the package length 3672on the fly, and this change supports this behavior. Provides compatibility 3673with the MS AML interpreter. (With assistance from Fiodor Suietov) 3674 3675Implemented a temporary fix for the BankValue parameter of a Bank Field to 3676support all constant values, now including the Zero and One opcodes. 3677Evaluation of this parameter must eventually be converted to a full TermArg 3678evaluation. A not-implemented error is now returned (temporarily) for non- 3679constant values for this parameter. 3680 3681Fixed problem reports (Fiodor Suietov) integrated: 3682- Fix for premature object deletion after CopyObject on Operation Region (BZ 3683350) 3684 3685Example Code and Data Size: These are the sizes for the OS-independent 3686acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3687debug version of the code includes the debug output trace mechanism and has 3688a much larger code and data size. 3689 3690 Previous Release: 3691 Non-Debug Version: 80.7K Code, 18.0K Data, 98.7K Total 3692 Debug Version: 160.9K Code, 65.1K Data, 226.0K Total 3693 Current Release: 3694 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 3695 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 3696 3697 36982) iASL Compiler/Disassembler and Tools: 3699 3700No changes for this release. 3701 3702---------------------------------------- 370307 July 2006. Summary of changes for version 20060707: 3704 37051) ACPI CA Core Subsystem: 3706 3707Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers 3708that do not allow the initialization of address pointers within packed 3709structures - even though the hardware itself may support misaligned 3710transfers. Some of the debug data structures are packed by default to 3711minimize size. 3712 3713Added an error message for the case where AcpiOsGetThreadId() returns zero. 3714A non-zero value is required by the core ACPICA code to ensure the proper 3715operation of AML mutexes and recursive control methods. 3716 3717The DSDT is now the only ACPI table that determines whether the AML 3718interpreter is in 32-bit or 64-bit mode. Not really a functional change, but 3719the hooks for per-table 32/64 switching have been removed from the code. A 3720clarification to the ACPI specification is forthcoming in ACPI 3.0B. 3721 3722Fixed a possible leak of an OwnerID in the error path of 3723AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID 3724deletion to a single place in AcpiTbUninstallTable to correct possible leaks 3725when using the AcpiTbDeleteTablesByType interface (with assistance from 3726Lance Ortiz.) 3727 3728Fixed a problem with Serialized control methods where the semaphore 3729associated with the method could be over-signaled after multiple method 3730invocations. 3731 3732Fixed two issues with the locking of the internal namespace data structure. 3733Both the Unload() operator and AcpiUnloadTable interface now lock the 3734namespace during the namespace deletion associated with the table unload 3735(with assistance from Linn Crosetto.) 3736 3737Fixed problem reports (Valery Podrezov) integrated: 3738- Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426) 3739 3740Fixed problem reports (Fiodor Suietov) integrated: 3741- Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369) 3742- On Address Space handler deletion, needless deactivation call (BZ 374) 3743- AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ 375) 3744- Possible memory leak, Notify sub-objects of Processor, Power, ThermalZone 3745(BZ 376) 3746- AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378) 3747- Minimum Length of RSDT should be validated (BZ 379) 3748- AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no 3749Handler (BZ (380) 3750- AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type loaded 3751(BZ 381) 3752 3753Example Code and Data Size: These are the sizes for the OS-independent 3754acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3755debug version of the code includes the debug output trace mechanism and has 3756a much larger code and data size. 3757 3758 Previous Release: 3759 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 3760 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 3761 Current Release: 3762 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 3763 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 3764 3765 37662) iASL Compiler/Disassembler and Tools: 3767 3768Fixed problem reports: 3769Compiler segfault when ASL contains a long (>1024) String declaration (BZ 3770436) 3771 3772---------------------------------------- 377323 June 2006. Summary of changes for version 20060623: 3774 37751) ACPI CA Core Subsystem: 3776 3777Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This 3778allows the type to be customized to the host OS for improved efficiency 3779(since a spinlock is usually a very small object.) 3780 3781Implemented support for "ignored" bits in the ACPI registers. According to 3782the ACPI specification, these bits should be preserved when writing the 3783registers via a read/modify/write cycle. There are 3 bits preserved in this 3784manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11]. 3785 3786Implemented the initial deployment of new OSL mutex interfaces. Since some 3787host operating systems have separate mutex and semaphore objects, this 3788feature was requested. The base code now uses mutexes (and the new mutex 3789interfaces) wherever a binary semaphore was used previously. However, for 3790the current release, the mutex interfaces are defined as macros to map them 3791to the existing semaphore interfaces. Therefore, no OSL changes are required 3792at this time. (See acpiosxf.h) 3793 3794Fixed several problems with the support for the control method SyncLevel 3795parameter. The SyncLevel now works according to the ACPI specification and 3796in concert with the Mutex SyncLevel parameter, since the current SyncLevel 3797is a property of the executing thread. Mutual exclusion for control methods 3798is now implemented with a mutex instead of a semaphore. 3799 3800Fixed three instances of the use of the C shift operator in the bitfield 3801support code (exfldio.c) to avoid the use of a shift value larger than the 3802target data width. The behavior of C compilers is undefined in this case and 3803can cause unpredictable results, and therefore the case must be detected and 3804avoided. (Fiodor Suietov) 3805 3806Added an info message whenever an SSDT or OEM table is loaded dynamically 3807via the Load() or LoadTable() ASL operators. This should improve debugging 3808capability since it will show exactly what tables have been loaded (beyond 3809the tables present in the RSDT/XSDT.) 3810 3811Example Code and Data Size: These are the sizes for the OS-independent 3812acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3813debug version of the code includes the debug output trace mechanism and has 3814a much larger code and data size. 3815 3816 Previous Release: 3817 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 3818 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 3819 Current Release: 3820 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 3821 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 3822 3823 38242) iASL Compiler/Disassembler and Tools: 3825 3826No changes for this release. 3827 3828---------------------------------------- 382908 June 2006. Summary of changes for version 20060608: 3830 38311) ACPI CA Core Subsystem: 3832 3833Converted the locking mutex used for the ACPI hardware to a spinlock. This 3834change should eliminate all problems caused by attempting to acquire a 3835semaphore at interrupt level, and it means that all ACPICA external 3836interfaces that directly access the ACPI hardware can be safely called from 3837interrupt level. OSL code that implements the semaphore interfaces should be 3838able to eliminate any workarounds for being called at interrupt level. 3839 3840Fixed a regression introduced in 20060526 where the ACPI device 3841initialization could be prematurely aborted with an AE_NOT_FOUND if a device 3842did not have an optional _INI method. 3843 3844Fixed an IndexField issue where a write to the Data Register should be 3845limited in size to the AccessSize (width) of the IndexField itself. (BZ 433, 3846Fiodor Suietov) 3847 3848Fixed problem reports (Valery Podrezov) integrated: 3849- Allow store of ThermalZone objects to Debug object (BZ 5369/5370) 3850 3851Fixed problem reports (Fiodor Suietov) integrated: 3852- AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364) 3853 3854Removed four global mutexes that were obsolete and were no longer being 3855used. 3856 3857Example Code and Data Size: These are the sizes for the OS-independent 3858acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3859debug version of the code includes the debug output trace mechanism and has 3860a much larger code and data size. 3861 3862 Previous Release: 3863 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 3864 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 3865 Current Release: 3866 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 3867 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 3868 3869 38702) iASL Compiler/Disassembler and Tools: 3871 3872Fixed a fault when using -g option (get tables from registry) on Windows 3873machines. 3874 3875Fixed problem reports integrated: 3876- Generate error if CreateField NumBits parameter is zero. (BZ 405) 3877- Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor 3878Suietov) 3879- Global table revision override (-r) is ignored (BZ 413) 3880 3881---------------------------------------- 388226 May 2006. Summary of changes for version 20060526: 3883 38841) ACPI CA Core Subsystem: 3885 3886Restructured, flattened, and simplified the internal interfaces for 3887namespace object evaluation - resulting in smaller code, less CPU stack use, 3888and fewer interfaces. (With assistance from Mikhail Kouzmich) 3889 3890Fixed a problem with the CopyObject operator where the first parameter was 3891not typed correctly for the parser, interpreter, compiler, and disassembler. 3892Caused various errors and unexpected behavior. 3893 3894Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits 3895produced incorrect results with some C compilers. Since the behavior of C 3896compilers when the shift value is larger than the datatype width is 3897apparently not well defined, the interpreter now detects this condition and 3898simply returns zero as expected in all such cases. (BZ 395) 3899 3900Fixed problem reports (Valery Podrezov) integrated: 3901- Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329) 3902- Allow interpreter to handle nested method declarations (BZ 5361) 3903 3904Fixed problem reports (Fiodor Suietov) integrated: 3905- AcpiTerminate doesn't free debug memory allocation list objects (BZ 355) 3906- After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ 356) 3907- AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357) 3908- Resource Manager should return AE_TYPE for non-device objects (BZ 358) 3909- Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359) 3910- Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360) 3911- Incomplete cleanup branch in AcpiPsParseAml (BZ 361) 3912- Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362) 3913- AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ 365) 3914- Status of the Global Initialization Handler call not used (BZ 366) 3915- Incorrect object parameter to Global Initialization Handler (BZ 367) 3916 3917Example Code and Data Size: These are the sizes for the OS-independent 3918acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3919debug version of the code includes the debug output trace mechanism and has 3920a much larger code and data size. 3921 3922 Previous Release: 3923 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 3924 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 3925 Current Release: 3926 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 3927 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 3928 3929 39302) iASL Compiler/Disassembler and Tools: 3931 3932Modified the parser to allow the names IO, DMA, and IRQ to be used as 3933namespace identifiers with no collision with existing resource descriptor 3934macro names. This provides compatibility with other ASL compilers and is 3935most useful for disassembly/recompilation of existing tables without parse 3936errors. (With assistance from Thomas Renninger) 3937 3938Disassembler: fixed an incorrect disassembly problem with the 3939DataTableRegion and CopyObject operators. Fixed a possible fault during 3940disassembly of some Alias operators. 3941 3942---------------------------------------- 394312 May 2006. Summary of changes for version 20060512: 3944 39451) ACPI CA Core Subsystem: 3946 3947Replaced the AcpiOsQueueForExecution interface with a new interface named 3948AcpiOsExecute. The major difference is that the new interface does not have 3949a Priority parameter, this appeared to be useless and has been replaced by a 3950Type parameter. The Type tells the host what type of execution is being 3951requested, such as global lock handler, notify handler, GPE handler, etc. 3952This allows the host to queue and execute the request as appropriate for the 3953request type, possibly using different work queues and different priorities 3954for the various request types. This enables fixes for multithreading 3955deadlock problems such as BZ #5534, and will require changes to all existing 3956OS interface layers. (Alexey Starikovskiy and Bob Moore) 3957 3958Fixed a possible memory leak associated with the support for the so-called 3959"implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor 3960Suietov) 3961 3962Fixed a problem with the Load() operator where a table load from an 3963operation region could overwrite an internal table buffer by up to 7 bytes 3964and cause alignment faults on IPF systems. (With assistance from Luming Yu) 3965 3966Example Code and Data Size: These are the sizes for the OS-independent 3967acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3968debug version of the code includes the debug output trace mechanism and has 3969a much larger code and data size. 3970 3971 Previous Release: 3972 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 3973 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 3974 Current Release: 3975 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 3976 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 3977 3978 3979 39802) iASL Compiler/Disassembler and Tools: 3981 3982Disassembler: Implemented support to cross reference the internal namespace 3983and automatically generate ASL External() statements for symbols not defined 3984within the current table being disassembled. This will simplify the 3985disassembly and recompilation of interdependent tables such as SSDTs since 3986these statements will no longer have to be added manually. 3987 3988Disassembler: Implemented experimental support to automatically detect 3989invocations of external control methods and generate appropriate External() 3990statements. This is problematic because the AML cannot be correctly parsed 3991until the number of arguments for each control method is known. Currently, 3992standalone method invocations and invocations as the source operand of a 3993Store() statement are supported. 3994 3995Disassembler: Implemented support for the ASL pseudo-operators LNotEqual, 3996LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()), 3997LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code 3998more readable and likely closer to the original ASL source. 3999 4000---------------------------------------- 400121 April 2006. Summary of changes for version 20060421: 4002 40031) ACPI CA Core Subsystem: 4004 4005Removed a device initialization optimization introduced in 20051216 where 4006the _STA method was not run unless an _INI was also present for the same 4007device. This optimization could cause problems because it could allow _INI 4008methods to be run within a not-present device subtree. (If a not-present 4009device had no _INI, _STA would not be run, the not-present status would not 4010be discovered, and the children of the device would be incorrectly 4011traversed.) 4012 4013Implemented a new _STA optimization where namespace subtrees that do not 4014contain _INI are identified and ignored during device initialization. 4015Selectively running _STA can significantly improve boot time on large 4016machines (with assistance from Len Brown.) 4017 4018Implemented support for the device initialization case where the returned 4019_STA flags indicate a device not-present but functioning. In this case, _INI 4020is not run, but the device children are examined for presence, as per the 4021ACPI specification. 4022 4023Implemented an additional change to the IndexField support in order to 4024conform to MS behavior. The value written to the Index Register is not 4025simply a byte offset, it is a byte offset in units of the access width of 4026the parent Index Field. (Fiodor Suietov) 4027 4028Defined and deployed a new OSL interface, AcpiOsValidateAddress. This 4029interface is called during the creation of all AML operation regions, and 4030allows the host OS to exert control over what addresses it will allow the 4031AML code to access. Operation Regions whose addresses are disallowed will 4032cause a runtime exception when they are actually accessed (will not affect 4033or abort table loading.) See oswinxf or osunixxf for an example 4034implementation. 4035 4036Defined and deployed a new OSL interface, AcpiOsValidateInterface. This 4037interface allows the host OS to match the various "optional" 4038interface/behavior strings for the _OSI predefined control method as 4039appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf 4040for an example implementation. 4041 4042Restructured and corrected various problems in the exception handling code 4043paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod 4044(with assistance from Takayoshi Kochi.) 4045 4046Modified the Linux source converter to ignore quoted string literals while 4047converting identifiers from mixed to lower case. This will correct problems 4048with the disassembler and other areas where such strings must not be 4049modified. 4050 4051The ACPI_FUNCTION_* macros no longer require quotes around the function 4052name. This allows the Linux source converter to convert the names, now that 4053the converter ignores quoted strings. 4054 4055Example Code and Data Size: These are the sizes for the OS-independent 4056acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4057debug version of the code includes the debug output trace mechanism and has 4058a much larger code and data size. 4059 4060 Previous Release: 4061 4062 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 4063 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 4064 Current Release: 4065 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 4066 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 4067 4068 40692) iASL Compiler/Disassembler and Tools: 4070 4071Implemented 3 new warnings for iASL, and implemented multiple warning levels 4072(w2 flag). 4073 40741) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is not 4075WAIT_FOREVER (0xFFFF) and the code does not examine the return value to 4076check for the possible timeout, a warning is issued. 4077 40782) Useless operators: If an ASL operator does not specify an optional target 4079operand and it also does not use the function return value from the 4080operator, a warning is issued since the operator effectively does nothing. 4081 40823) Unreferenced objects: If a namespace object is created, but never 4083referenced, a warning is issued. This is a warning level 2 since there are 4084cases where this is ok, such as when a secondary table is loaded that uses 4085the unreferenced objects. Even so, care is taken to only flag objects that 4086don't look like they will ever be used. For example, the reserved methods 4087(starting with an underscore) are usually not referenced because it is 4088expected that the OS will invoke them. 4089 4090---------------------------------------- 409131 March 2006. Summary of changes for version 20060331: 4092 40931) ACPI CA Core Subsystem: 4094 4095Implemented header file support for the following additional ACPI tables: 4096ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this support, 4097all current and known ACPI tables are now defined in the ACPICA headers and 4098are available for use by device drivers and other software. 4099 4100Implemented support to allow tables that contain ACPI names with invalid 4101characters to be loaded. Previously, this would cause the table load to 4102fail, but since there are several known cases of such tables on existing 4103machines, this change was made to enable ACPI support for them. Also, this 4104matches the behavior of the Microsoft ACPI implementation. 4105 4106Fixed a couple regressions introduced during the memory optimization in the 410720060317 release. The namespace node definition required additional 4108reorganization and an internal datatype that had been changed to 8-bit was 4109restored to 32-bit. (Valery Podrezov) 4110 4111Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState 4112could be passed through to AcpiOsReleaseObject which is unexpected. Such 4113null pointers are now trapped and ignored, matching the behavior of the 4114previous implementation before the deployment of AcpiOsReleaseObject. 4115(Valery Podrezov, Fiodor Suietov) 4116 4117Fixed a memory mapping leak during the deletion of a SystemMemory operation 4118region where a cached memory mapping was not deleted. This became a 4119noticeable problem for operation regions that are defined within frequently 4120used control methods. (Dana Meyers) 4121 4122Reorganized the ACPI table header files into two main files: one for the 4123ACPI tables consumed by the ACPICA core, and another for the miscellaneous 4124ACPI tables that are consumed by the drivers and other software. The various 4125FADT definitions were merged into one common section and three different 4126tables (ACPI 1.0, 1.0+, and 2.0) 4127 4128Example Code and Data Size: These are the sizes for the OS-independent 4129acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4130debug version of the code includes the debug output trace mechanism and has 4131a much larger code and data size. 4132 4133 Previous Release: 4134 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 4135 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 4136 Current Release: 4137 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 4138 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 4139 4140 41412) iASL Compiler/Disassembler and Tools: 4142 4143Disassembler: Implemented support to decode and format all non-AML ACPI 4144tables (tables other than DSDTs and SSDTs.) This includes the new tables 4145added to the ACPICA headers, therefore all current and known ACPI tables are 4146supported. 4147 4148Disassembler: The change to allow ACPI names with invalid characters also 4149enables the disassembly of such tables. Invalid characters within names are 4150changed to '*' to make the name printable; the iASL compiler will still 4151generate an error for such names, however, since this is an invalid ACPI 4152character. 4153 4154Implemented an option for AcpiXtract (-a) to extract all tables found in the 4155input file. The default invocation extracts only the DSDTs and SSDTs. 4156 4157Fixed a couple of gcc generation issues for iASL and AcpiExec and added a 4158makefile for the AcpiXtract utility. 4159 4160---------------------------------------- 416117 March 2006. Summary of changes for version 20060317: 4162 41631) ACPI CA Core Subsystem: 4164 4165Implemented the use of a cache object for all internal namespace nodes. 4166Since there are about 1000 static nodes in a typical system, this will 4167decrease memory use for cache implementations that minimize per-allocation 4168overhead (such as a slab allocator.) 4169 4170Removed the reference count mechanism for internal namespace nodes, since it 4171was deemed unnecessary. This reduces the size of each namespace node by 4172about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit case, 4173and 32 bytes for the 64-bit case. 4174 4175Optimized several internal data structures to reduce object size on 64-bit 4176platforms by packing data within the 64-bit alignment. This includes the 4177frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static 4178instances corresponding to the namespace objects. 4179 4180Added two new strings for the predefined _OSI method: "Windows 2001.1 SP1" 4181and "Windows 2006". 4182 4183Split the allocation tracking mechanism out to a separate file, from 4184utalloc.c to uttrack.c. This mechanism appears to be only useful for 4185application-level code. Kernels may wish to not include uttrack.c in 4186distributions. 4187 4188Removed all remnants of the obsolete ACPI_REPORT_* macros and the associated 4189code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING 4190macros.) 4191 4192Code and Data Size: These are the sizes for the acpica.lib produced by the 4193Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI 4194driver or OSPM code. The debug version of the code includes the debug output 4195trace mechanism and has a much larger code and data size. Note that these 4196values will vary depending on the efficiency of the compiler and the 4197compiler options used during generation. 4198 4199 Previous Release: 4200 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 4201 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 4202 Current Release: 4203 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 4204 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 4205 4206 42072) iASL Compiler/Disassembler and Tools: 4208 4209Implemented an ANSI C version of the acpixtract utility. This version will 4210automatically extract the DSDT and all SSDTs from the input acpidump text 4211file and dump the binary output to separate files. It can also display a 4212summary of the input file including the headers for each table found and 4213will extract any single ACPI table, with any signature. (See 4214source/tools/acpixtract) 4215 4216---------------------------------------- 421710 March 2006. Summary of changes for version 20060310: 4218 42191) ACPI CA Core Subsystem: 4220 4221Tagged all external interfaces to the subsystem with the new 4222ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to assist 4223kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL 4224macro. The default definition is NULL. 4225 4226Added the ACPI_THREAD_ID type for the return value from AcpiOsGetThreadId. 4227This allows the host to define this as necessary to simplify kernel 4228integration. The default definition is ACPI_NATIVE_UINT. 4229 4230Fixed two interpreter problems related to error processing, the deletion of 4231objects, and placing invalid pointers onto the internal operator result 4232stack. BZ 6028, 6151 (Valery Podrezov) 4233 4234Increased the reference count threshold where a warning is emitted for large 4235reference counts in order to eliminate unnecessary warnings on systems with 4236large namespaces (especially 64-bit.) Increased the value from 0x400 to 42370x800. 4238 4239Due to universal disagreement as to the meaning of the 'c' in the calloc() 4240function, the ACPI_MEM_CALLOCATE macro has been renamed to 4241ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'. 4242ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and 4243ACPI_FREE. 4244 4245Code and Data Size: These are the sizes for the acpica.lib produced by the 4246Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI 4247driver or OSPM code. The debug version of the code includes the debug output 4248trace mechanism and has a much larger code and data size. Note that these 4249values will vary depending on the efficiency of the compiler and the 4250compiler options used during generation. 4251 4252 Previous Release: 4253 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 4254 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 4255 Current Release: 4256 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 4257 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 4258 4259 42602) iASL Compiler/Disassembler: 4261 4262Disassembler: implemented support for symbolic resource descriptor 4263references. If a CreateXxxxField operator references a fixed offset within a 4264resource descriptor, a name is assigned to the descriptor and the offset is 4265translated to the appropriate resource tag and pathname. The addition of 4266this support brings the disassembled code very close to the original ASL 4267source code and helps eliminate run-time errors when the disassembled code 4268is modified (and recompiled) in such a way as to invalidate the original 4269fixed offsets. 4270 4271Implemented support for a Descriptor Name as the last parameter to the ASL 4272Register() macro. This parameter was inadvertently left out of the ACPI 4273specification, and will be added for ACPI 3.0b. 4274 4275Fixed a problem where the use of the "_OSI" string (versus the full path 4276"\_OSI") caused an internal compiler error. ("No back ptr to op") 4277 4278Fixed a problem with the error message that occurs when an invalid string is 4279used for a _HID object (such as one with an embedded asterisk: "*PNP010A".) 4280The correct message is now displayed. 4281 4282---------------------------------------- 428317 February 2006. Summary of changes for version 20060217: 4284 42851) ACPI CA Core Subsystem: 4286 4287Implemented a change to the IndexField support to match the behavior of the 4288Microsoft AML interpreter. The value written to the Index register is now a 4289byte offset, no longer an index based upon the width of the Data register. 4290This should fix IndexField problems seen on some machines where the Data 4291register is not exactly one byte wide. The ACPI specification will be 4292clarified on this point. 4293 4294Fixed a problem where several resource descriptor types could overrun the 4295internal descriptor buffer due to size miscalculation: VendorShort, 4296VendorLong, and Interrupt. This was noticed on IA64 machines, but could 4297affect all platforms. 4298 4299Fixed a problem where individual resource descriptors were misaligned within 4300the internal buffer, causing alignment faults on IA64 platforms. 4301 4302Code and Data Size: These are the sizes for the acpica.lib produced by the 4303Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI 4304driver or OSPM code. The debug version of the code includes the debug output 4305trace mechanism and has a much larger code and data size. Note that these 4306values will vary depending on the efficiency of the compiler and the 4307compiler options used during generation. 4308 4309 Previous Release: 4310 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 4311 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 4312 Current Release: 4313 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 4314 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 4315 4316 43172) iASL Compiler/Disassembler: 4318 4319Implemented support for new reserved names: _WDG and _WED are Microsoft 4320extensions for Windows Instrumentation Management, _TDL is a new ACPI- 4321defined method (Throttling Depth Limit.) 4322 4323Fixed a problem where a zero-length VendorShort or VendorLong resource 4324descriptor was incorrectly emitted as a descriptor of length one. 4325 4326---------------------------------------- 432710 February 2006. Summary of changes for version 20060210: 4328 43291) ACPI CA Core Subsystem: 4330 4331Removed a couple of extraneous ACPI_ERROR messages that appeared during 4332normal execution. These became apparent after the conversion from 4333ACPI_DEBUG_PRINT. 4334 4335Fixed a problem where the CreateField operator could hang if the BitIndex or 4336NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359) 4337 4338Fixed a problem where a DeRefOf operation on a buffer object incorrectly 4339failed with an exception. This also fixes a couple of related RefOf and 4340DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387) 4341 4342Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead of 4343AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov, BZ 43445480) 4345 4346Implemented a memory cleanup at the end of the execution of each iteration 4347of an AML While() loop, preventing the accumulation of outstanding objects. 4348(Valery Podrezov, BZ 5427) 4349 4350Eliminated a chunk of duplicate code in the object resolution code. (Valery 4351Podrezov, BZ 5336) 4352 4353Fixed several warnings during the 64-bit code generation. 4354 4355The AcpiSrc source code conversion tool now inserts one line of whitespace 4356after an if() statement that is followed immediately by a comment, improving 4357readability of the Linux code. 4358 4359Code and Data Size: The current and previous library sizes for the core 4360subsystem are shown below. These are the code and data sizes for the 4361acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4362values do not include any ACPI driver or OSPM code. The debug version of the 4363code includes the debug output trace mechanism and has a much larger code 4364and data size. Note that these values will vary depending on the efficiency 4365of the compiler and the compiler options used during generation. 4366 4367 Previous Release: 4368 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 4369 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 4370 Current Release: 4371 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 4372 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 4373 4374 43752) iASL Compiler/Disassembler: 4376 4377Fixed a problem with the disassembly of a BankField operator with a complex 4378expression for the BankValue parameter. 4379 4380---------------------------------------- 438127 January 2006. Summary of changes for version 20060127: 4382 43831) ACPI CA Core Subsystem: 4384 4385Implemented support in the Resource Manager to allow unresolved namestring 4386references within resource package objects for the _PRT method. This support 4387is in addition to the previously implemented unresolved reference support 4388within the AML parser. If the interpreter slack mode is enabled, these 4389unresolved references will be passed through to the caller as a NULL package 4390entry. 4391 4392Implemented and deployed new macros and functions for error and warning 4393messages across the subsystem. These macros are simpler and generate less 4394code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION, 4395ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older 4396macros remain defined to allow ACPI drivers time to migrate to the new 4397macros. 4398 4399Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of the 4400Acquire/Release Lock OSL interfaces. 4401 4402Fixed a problem where Alias ASL operators are sometimes not correctly 4403resolved, in both the interpreter and the iASL compiler. 4404 4405Fixed several problems with the implementation of the ConcatenateResTemplate 4406ASL operator. As per the ACPI specification, zero length buffers are now 4407treated as a single EndTag. One-length buffers always cause a fatal 4408exception. Non-zero length buffers that do not end with a full 2-byte EndTag 4409cause a fatal exception. 4410 4411Fixed a possible structure overwrite in the AcpiGetObjectInfo external 4412interface. (With assistance from Thomas Renninger) 4413 4414Code and Data Size: The current and previous library sizes for the core 4415subsystem are shown below. These are the code and data sizes for the 4416acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4417values do not include any ACPI driver or OSPM code. The debug version of the 4418code includes the debug output trace mechanism and has a much larger code 4419and data size. Note that these values will vary depending on the efficiency 4420of the compiler and the compiler options used during generation. 4421 4422 Previous Release: 4423 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 4424 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 4425 Current Release: 4426 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 4427 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 4428 4429 44302) iASL Compiler/Disassembler: 4431 4432Fixed an internal error that was generated for any forward references to ASL 4433Alias objects. 4434 4435---------------------------------------- 443613 January 2006. Summary of changes for version 20060113: 4437 44381) ACPI CA Core Subsystem: 4439 4440Added 2006 copyright to all module headers and signons. This affects 4441virtually every file in the ACPICA core subsystem, iASL compiler, and the 4442utilities. 4443 4444Enhanced the ACPICA error reporting in order to simplify user migration to 4445the non-debug version of ACPICA. Replaced all instances of the 4446ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN debug 4447levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros, 4448respectively. This preserves all error and warning messages in the non-debug 4449version of the ACPICA code (this has been referred to as the "debug lite" 4450option.) Over 200 cases were converted to create a total of over 380 4451error/warning messages across the ACPICA code. This increases the code and 4452data size of the default non-debug version of the code somewhat (about 13K), 4453but all error/warning reporting may be disabled if desired (and code 4454eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time 4455configuration option. The size of the debug version of ACPICA remains about 4456the same. 4457 4458Fixed a memory leak within the AML Debugger "Set" command. One object was 4459not properly deleted for every successful invocation of the command. 4460 4461Code and Data Size: The current and previous library sizes for the core 4462subsystem are shown below. These are the code and data sizes for the 4463acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4464values do not include any ACPI driver or OSPM code. The debug version of the 4465code includes the debug output trace mechanism and has a much larger code 4466and data size. Note that these values will vary depending on the efficiency 4467of the compiler and the compiler options used during generation. 4468 4469 Previous Release: 4470 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 4471 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 4472 Current Release: 4473 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 4474 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 4475 4476 44772) iASL Compiler/Disassembler: 4478 4479The compiler now officially supports the ACPI 3.0a specification that was 4480released on December 30, 2005. (Specification is available at www.acpi.info) 4481 4482---------------------------------------- 448316 December 2005. Summary of changes for version 20051216: 4484 44851) ACPI CA Core Subsystem: 4486 4487Implemented optional support to allow unresolved names within ASL Package 4488objects. A null object is inserted in the package when a named reference 4489cannot be located in the current namespace. Enabled via the interpreter 4490slack flag, this should eliminate AE_NOT_FOUND exceptions seen on machines 4491that contain such code. 4492 4493Implemented an optimization to the initialization sequence that can improve 4494boot time. During ACPI device initialization, the _STA method is now run if 4495and only if the _INI method exists. The _STA method is used to determine if 4496the device is present; An _INI can only be run if _STA returns present, but 4497it is a waste of time to run the _STA method if the _INI does not exist. 4498(Prototype and assistance from Dong Wei) 4499 4500Implemented use of the C99 uintptr_t for the pointer casting macros if it is 4501available in the current compiler. Otherwise, the default (void *) cast is 4502used as before. 4503 4504Fixed some possible memory leaks found within the execution path of the 4505Break, Continue, If, and CreateField operators. (Valery Podrezov) 4506 4507Fixed a problem introduced in the 20051202 release where an exception is 4508generated during method execution if a control method attempts to declare 4509another method. 4510 4511Moved resource descriptor string constants that are used by both the AML 4512disassembler and AML debugger to the common utilities directory so that 4513these components are independent. 4514 4515Implemented support in the AcpiExec utility (-e switch) to globally ignore 4516exceptions during control method execution (method is not aborted.) 4517 4518Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix 4519generation. 4520 4521Code and Data Size: The current and previous library sizes for the core 4522subsystem are shown below. These are the code and data sizes for the 4523acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4524values do not include any ACPI driver or OSPM code. The debug version of the 4525code includes the debug output trace mechanism and has a much larger code 4526and data size. Note that these values will vary depending on the efficiency 4527of the compiler and the compiler options used during generation. 4528 4529 Previous Release: 4530 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 4531 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 4532 Current Release: 4533 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 4534 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 4535 4536 45372) iASL Compiler/Disassembler: 4538 4539Fixed a problem where a CPU stack overflow fault could occur if a recursive 4540method call was made from within a Return statement. 4541 4542---------------------------------------- 454302 December 2005. Summary of changes for version 20051202: 4544 45451) ACPI CA Core Subsystem: 4546 4547Modified the parsing of control methods to no longer create namespace 4548objects during the first pass of the parse. Objects are now created only 4549during the execute phase, at the moment the namespace creation operator is 4550encountered in the AML (Name, OperationRegion, CreateByteField, etc.) This 4551should eliminate ALREADY_EXISTS exceptions seen on some machines where 4552reentrant control methods are protected by an AML mutex. The mutex will now 4553correctly block multiple threads from attempting to create the same object 4554more than once. 4555 4556Increased the number of available Owner Ids for namespace object tracking 4557from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen on 4558some machines with a large number of ACPI tables (either static or dynamic). 4559 4560Fixed a problem with the AcpiExec utility where a fault could occur when the 4561-b switch (batch mode) is used. 4562 4563Enhanced the namespace dump routine to output the owner ID for each 4564namespace object. 4565 4566Code and Data Size: The current and previous library sizes for the core 4567subsystem are shown below. These are the code and data sizes for the 4568acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4569values do not include any ACPI driver or OSPM code. The debug version of the 4570code includes the debug output trace mechanism and has a much larger code 4571and data size. Note that these values will vary depending on the efficiency 4572of the compiler and the compiler options used during generation. 4573 4574 Previous Release: 4575 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 4576 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 4577 Current Release: 4578 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 4579 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 4580 4581 45822) iASL Compiler/Disassembler: 4583 4584Fixed a parse error during compilation of certain Switch/Case constructs. To 4585simplify the parse, the grammar now allows for multiple Default statements 4586and this error is now detected and flagged during the analysis phase. 4587 4588Disassembler: The disassembly now includes the contents of the original 4589table header within a comment at the start of the file. This includes the 4590name and version of the original ASL compiler. 4591 4592---------------------------------------- 459317 November 2005. Summary of changes for version 20051117: 4594 45951) ACPI CA Core Subsystem: 4596 4597Fixed a problem in the AML parser where the method thread count could be 4598decremented below zero if any errors occurred during the method parse phase. 4599This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some machines. 4600This also fixed a related regression with the mechanism that detects and 4601corrects methods that cannot properly handle reentrancy (related to the 4602deployment of the new OwnerId mechanism.) 4603 4604Eliminated the pre-parsing of control methods (to detect errors) during 4605table load. Related to the problem above, this was causing unwind issues if 4606any errors occurred during the parse, and it seemed to be overkill. A table 4607load should not be aborted if there are problems with any single control 4608method, thus rendering this feature rather pointless. 4609 4610Fixed a problem with the new table-driven resource manager where an internal 4611buffer overflow could occur for small resource templates. 4612 4613Implemented a new external interface, AcpiGetVendorResource. This interface 4614will find and return a vendor-defined resource descriptor within a _CRS or 4615_PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn Helgaas. 4616 4617Removed the length limit (200) on string objects as per the upcoming ACPI 46183.0A specification. This affects the following areas of the interpreter: 1) 4619any implicit conversion of a Buffer to a String, 2) a String object result 4620of the ASL Concatentate operator, 3) the String object result of the ASL 4621ToString operator. 4622 4623Fixed a problem in the Windows OS interface layer (OSL) where a WAIT_FOREVER 4624on a semaphore object would incorrectly timeout. This allows the 4625multithreading features of the AcpiExec utility to work properly under 4626Windows. 4627 4628Updated the Linux makefiles for the iASL compiler and AcpiExec to include 4629the recently added file named "utresrc.c". 4630 4631Code and Data Size: The current and previous library sizes for the core 4632subsystem are shown below. These are the code and data sizes for the 4633acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4634values do not include any ACPI driver or OSPM code. The debug version of the 4635code includes the debug output trace mechanism and has a much larger code 4636and data size. Note that these values will vary depending on the efficiency 4637of the compiler and the compiler options used during generation. 4638 4639 Previous Release: 4640 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 4641 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 4642 Current Release: 4643 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 4644 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 4645 4646 46472) iASL Compiler/Disassembler: 4648 4649Removed the limit (200) on string objects as per the upcoming ACPI 3.0A 4650specification. For the iASL compiler, this means that string literals within 4651the source ASL can be of any length. 4652 4653Enhanced the listing output to dump the AML code for resource descriptors 4654immediately after the ASL code for each descriptor, instead of in a block at 4655the end of the entire resource template. 4656 4657Enhanced the compiler debug output to dump the entire original parse tree 4658constructed during the parse phase, before any transforms are applied to the 4659tree. The transformed tree is dumped also. 4660 4661---------------------------------------- 466202 November 2005. Summary of changes for version 20051102: 4663 46641) ACPI CA Core Subsystem: 4665 4666Modified the subsystem initialization sequence to improve GPE support. The 4667GPE initialization has been split into two parts in order to defer execution 4668of the _PRW methods (Power Resources for Wake) until after the hardware is 4669fully initialized and the SCI handler is installed. This allows the _PRW 4670methods to access fields protected by the Global Lock. This will fix systems 4671where a NO_GLOBAL_LOCK exception has been seen during initialization. 4672 4673Converted the ACPI internal object disassemble and display code within the 4674AML debugger to fully table-driven operation, reducing code size and 4675increasing maintainability. 4676 4677Fixed a regression with the ConcatenateResTemplate() ASL operator introduced 4678in the 20051021 release. 4679 4680Implemented support for "local" internal ACPI object types within the 4681debugger "Object" command and the AcpiWalkNamespace external interfaces. 4682These local types include RegionFields, BankFields, IndexFields, Alias, and 4683reference objects. 4684 4685Moved common AML resource handling code into a new file, "utresrc.c". This 4686code is shared by both the Resource Manager and the AML Debugger. 4687 4688Code and Data Size: The current and previous library sizes for the core 4689subsystem are shown below. These are the code and data sizes for the 4690acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4691values do not include any ACPI driver or OSPM code. The debug version of the 4692code includes the debug output trace mechanism and has a much larger code 4693and data size. Note that these values will vary depending on the efficiency 4694of the compiler and the compiler options used during generation. 4695 4696 Previous Release: 4697 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 4698 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 4699 Current Release: 4700 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 4701 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 4702 4703 47042) iASL Compiler/Disassembler: 4705 4706Fixed a problem with very large initializer lists (more than 4000 elements) 4707for both Buffer and Package objects where the parse stack could overflow. 4708 4709Enhanced the pre-compile source code scan for non-ASCII characters to ignore 4710characters within comment fields. The scan is now always performed and is no 4711longer optional, detecting invalid characters within a source file 4712immediately rather than during the parse phase or later. 4713 4714Enhanced the ASL grammar definition to force early reductions on all list- 4715style grammar elements so that the overall parse stack usage is greatly 4716reduced. This should improve performance and reduce the possibility of parse 4717stack overflow. 4718 4719Eliminated all reduce/reduce conflicts in the iASL parser generation. Also, 4720with the addition of a %expected statement, the compiler generates from 4721source with no warnings. 4722 4723Fixed a possible segment fault in the disassembler if the input filename 4724does not contain a "dot" extension (Thomas Renninger). 4725 4726---------------------------------------- 472721 October 2005. Summary of changes for version 20051021: 4728 47291) ACPI CA Core Subsystem: 4730 4731Implemented support for the EM64T and other x86-64 processors. This 4732essentially entails recognizing that these processors support non-aligned 4733memory transfers. Previously, all 64-bit processors were assumed to lack 4734hardware support for non-aligned transfers. 4735 4736Completed conversion of the Resource Manager to nearly full table-driven 4737operation. Specifically, the resource conversion code (convert AML to 4738internal format and the reverse) and the debug code to dump internal 4739resource descriptors are fully table-driven, reducing code and data size and 4740improving maintainability. 4741 4742The OSL interfaces for Acquire and Release Lock now use a 64-bit flag word 4743on 64-bit processors instead of a fixed 32-bit word. (With assistance from 4744Alexey Starikovskiy) 4745 4746Implemented support within the resource conversion code for the Type- 4747Specific byte within the various ACPI 3.0 *WordSpace macros. 4748 4749Fixed some issues within the resource conversion code for the type-specific 4750flags for both Memory and I/O address resource descriptors. For Memory, 4751implemented support for the MTP and TTP flags. For I/O, split the TRS and 4752TTP flags into two separate fields. 4753 4754Code and Data Size: The current and previous library sizes for the core 4755subsystem are shown below. These are the code and data sizes for the 4756acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4757values do not include any ACPI driver or OSPM code. The debug version of the 4758code includes the debug output trace mechanism and has a much larger code 4759and data size. Note that these values will vary depending on the efficiency 4760of the compiler and the compiler options used during generation. 4761 4762 Previous Release: 4763 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 4764 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 4765 Current Release: 4766 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 4767 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 4768 4769 4770 47712) iASL Compiler/Disassembler: 4772 4773Relaxed a compiler restriction that disallowed a ResourceIndex byte if the 4774corresponding ResourceSource string was not also present in a resource 4775descriptor declaration. This restriction caused problems with existing 4776AML/ASL code that includes the Index byte without the string. When such AML 4777was disassembled, it could not be compiled without modification. Further, 4778the modified code created a resource template with a different size than the 4779original, breaking code that used fixed offsets into the resource template 4780buffer. 4781 4782Removed a recent feature of the disassembler to ignore a lone ResourceIndex 4783byte. This byte is now emitted if present so that the exact AML can be 4784reproduced when the disassembled code is recompiled. 4785 4786Improved comments and text alignment for the resource descriptor code 4787emitted by the disassembler. 4788 4789Implemented disassembler support for the ACPI 3.0 AccessSize field within a 4790Register() resource descriptor. 4791 4792---------------------------------------- 479330 September 2005. Summary of changes for version 20050930: 4794 47951) ACPI CA Core Subsystem: 4796 4797Completed a major overhaul of the Resource Manager code - specifically, 4798optimizations in the area of the AML/internal resource conversion code. The 4799code has been optimized to simplify and eliminate duplicated code, CPU stack 4800use has been decreased by optimizing function parameters and local 4801variables, and naming conventions across the manager have been standardized 4802for clarity and ease of maintenance (this includes function, parameter, 4803variable, and struct/typedef names.) The update may force changes in some 4804driver code, depending on how resources are handled by the host OS. 4805 4806All Resource Manager dispatch and information tables have been moved to a 4807single location for clarity and ease of maintenance. One new file was 4808created, named "rsinfo.c". 4809 4810The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to 4811guarantee that the argument is not evaluated twice, making them less prone 4812to macro side-effects. However, since there exists the possibility of 4813additional stack use if a particular compiler cannot optimize them (such as 4814in the debug generation case), the original macros are optionally available. 4815Note that some invocations of the return_VALUE macro may now cause size 4816mismatch warnings; the return_UINT8 and return_UINT32 macros are provided to 4817eliminate these. (From Randy Dunlap) 4818 4819Implemented a new mechanism to enable debug tracing for individual control 4820methods. A new external interface, AcpiDebugTrace, is provided to enable 4821this mechanism. The intent is to allow the host OS to easily enable and 4822disable tracing for problematic control methods. This interface can be 4823easily exposed to a user or debugger interface if desired. See the file 4824psxface.c for details. 4825 4826AcpiUtCallocate will now return a valid pointer if a length of zero is 4827specified - a length of one is used and a warning is issued. This matches 4828the behavior of AcpiUtAllocate. 4829 4830Code and Data Size: The current and previous library sizes for the core 4831subsystem are shown below. These are the code and data sizes for the 4832acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4833values do not include any ACPI driver or OSPM code. The debug version of the 4834code includes the debug output trace mechanism and has a much larger code 4835and data size. Note that these values will vary depending on the efficiency 4836of the compiler and the compiler options used during generation. 4837 4838 Previous Release: 4839 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 4840 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 4841 Current Release: 4842 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 4843 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 4844 4845 48462) iASL Compiler/Disassembler: 4847 4848A remark is issued if the effective compile-time length of a package or 4849buffer is zero. Previously, this was a warning. 4850 4851---------------------------------------- 485216 September 2005. Summary of changes for version 20050916: 4853 48541) ACPI CA Core Subsystem: 4855 4856Fixed a problem within the Resource Manager where support for the Generic 4857Register descriptor was not fully implemented. This descriptor is now fully 4858recognized, parsed, disassembled, and displayed. 4859 4860Completely restructured the Resource Manager code to utilize table-driven 4861dispatch and lookup, eliminating many of the large switch() statements. This 4862reduces overall subsystem code size and code complexity. Affects the 4863resource parsing and construction, disassembly, and debug dump output. 4864 4865Cleaned up and restructured the debug dump output for all resource 4866descriptors. Improved readability of the output and reduced code size. 4867 4868Fixed a problem where changes to internal data structures caused the 4869optional ACPI_MUTEX_DEBUG code to fail compilation if specified. 4870 4871Code and Data Size: The current and previous library sizes for the core 4872subsystem are shown below. These are the code and data sizes for the 4873acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4874values do not include any ACPI driver or OSPM code. The debug version of the 4875code includes the debug output trace mechanism and has a much larger code 4876and data size. Note that these values will vary depending on the efficiency 4877of the compiler and the compiler options used during generation. 4878 4879 Previous Release: 4880 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 4881 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 4882 Current Release: 4883 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 4884 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 4885 4886 48872) iASL Compiler/Disassembler: 4888 4889Updated the disassembler to automatically insert an EndDependentFn() macro 4890into the ASL stream if this macro is missing in the original AML code, 4891simplifying compilation of the resulting ASL module. 4892 4893Fixed a problem in the disassembler where a disassembled ResourceSource 4894string (within a large resource descriptor) was not surrounded by quotes and 4895not followed by a comma, causing errors when the resulting ASL module was 4896compiled. Also, escape sequences within a ResourceSource string are now 4897handled correctly (especially "\\") 4898 4899---------------------------------------- 490002 September 2005. Summary of changes for version 20050902: 4901 49021) ACPI CA Core Subsystem: 4903 4904Fixed a problem with the internal Owner ID allocation and deallocation 4905mechanisms for control method execution and recursive method invocation. 4906This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId" 4907messages seen on some systems. Recursive method invocation depth is 4908currently limited to 255. (Alexey Starikovskiy) 4909 4910Completely eliminated all vestiges of support for the "module-level 4911executable code" until this support is fully implemented and debugged. This 4912should eliminate the NO_RETURN_VALUE exceptions seen during table load on 4913some systems that invoke this support. 4914 4915Fixed a problem within the resource manager code where the transaction flags 4916for a 64-bit address descriptor were handled incorrectly in the type- 4917specific flag byte. 4918 4919Consolidated duplicate code within the address descriptor resource manager 4920code, reducing overall subsystem code size. 4921 4922Fixed a fault when using the AML debugger "disassemble" command to 4923disassemble individual control methods. 4924 4925Removed references to the "release_current" directory within the Unix 4926release package. 4927 4928Code and Data Size: The current and previous core subsystem library sizes 4929are shown below. These are the code and data sizes for the acpica.lib 4930produced by the Microsoft Visual C++ 6.0 compiler. These values do not 4931include any ACPI driver or OSPM code. The debug version of the code includes 4932the debug output trace mechanism and has a much larger code and data size. 4933Note that these values will vary depending on the efficiency of the compiler 4934and the compiler options used during generation. 4935 4936 Previous Release: 4937 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 4938 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 4939 Current Release: 4940 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 4941 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 4942 4943 49442) iASL Compiler/Disassembler: 4945 4946Implemented an error check for illegal duplicate values in the interrupt and 4947dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and 4948Interrupt(). 4949 4950Implemented error checking for the Irq() and IrqNoFlags() macros to detect 4951too many values in the interrupt list (16 max) and invalid values in the 4952list (range 0 - 15) 4953 4954The maximum length string literal within an ASL file is now restricted to 4955200 characters as per the ACPI specification. 4956 4957Fixed a fault when using the -ln option (generate namespace listing). 4958 4959Implemented an error check to determine if a DescriptorName within a 4960resource descriptor has already been used within the current scope. 4961 4962---------------------------------------- 496315 August 2005. Summary of changes for version 20050815: 4964 49651) ACPI CA Core Subsystem: 4966 4967Implemented a full bytewise compare to determine if a table load request is 4968attempting to load a duplicate table. The compare is performed if the table 4969signatures and table lengths match. This will allow different tables with 4970the same OEM Table ID and revision to be loaded - probably against the ACPI 4971specification, but discovered in the field nonetheless. 4972 4973Added the changes.txt logfile to each of the zipped release packages. 4974 4975Code and Data Size: Current and previous core subsystem library sizes are 4976shown below. These are the code and data sizes for the acpica.lib produced 4977by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4978any ACPI driver or OSPM code. The debug version of the code includes the 4979debug output trace mechanism and has a much larger code and data size. Note 4980that these values will vary depending on the efficiency of the compiler and 4981the compiler options used during generation. 4982 4983 Previous Release: 4984 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 4985 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 4986 Current Release: 4987 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 4988 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 4989 4990 49912) iASL Compiler/Disassembler: 4992 4993Fixed a problem where incorrect AML code could be generated for Package 4994objects if optimization is disabled (via the -oa switch). 4995 4996Fixed a problem with where incorrect AML code is generated for variable- 4997length packages when the package length is not specified and the number of 4998initializer values is greater than 255. 4999 5000 5001---------------------------------------- 500229 July 2005. Summary of changes for version 20050729: 5003 50041) ACPI CA Core Subsystem: 5005 5006Implemented support to ignore an attempt to install/load a particular ACPI 5007table more than once. Apparently there exists BIOS code that repeatedly 5008attempts to load the same SSDT upon certain events. With assistance from 5009Venkatesh Pallipadi. 5010 5011Restructured the main interface to the AML parser in order to correctly 5012handle all exceptional conditions. This will prevent leakage of the OwnerId 5013resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on some 5014machines. With assistance from Alexey Starikovskiy. 5015 5016Support for "module level code" has been disabled in this version due to a 5017number of issues that have appeared on various machines. The support can be 5018enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem 5019compilation. When the issues are fully resolved, the code will be enabled by 5020default again. 5021 5022Modified the internal functions for debug print support to define the 5023FunctionName parameter as a (const char *) for compatibility with compiler 5024built-in macros such as __FUNCTION__, etc. 5025 5026Linted the entire ACPICA source tree for both 32-bit and 64-bit. 5027 5028Implemented support to display an object count summary for the AML Debugger 5029commands Object and Methods. 5030 5031Code and Data Size: Current and previous core subsystem library sizes are 5032shown below. These are the code and data sizes for the acpica.lib produced 5033by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5034any ACPI driver or OSPM code. The debug version of the code includes the 5035debug output trace mechanism and has a much larger code and data size. Note 5036that these values will vary depending on the efficiency of the compiler and 5037the compiler options used during generation. 5038 5039 Previous Release: 5040 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 5041 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 5042 Current Release: 5043 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 5044 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 5045 5046 50472) iASL Compiler/Disassembler: 5048 5049Fixed a regression that appeared in the 20050708 version of the compiler 5050where an error message was inadvertently emitted for invocations of the _OSI 5051reserved control method. 5052 5053---------------------------------------- 505408 July 2005. Summary of changes for version 20050708: 5055 50561) ACPI CA Core Subsystem: 5057 5058The use of the CPU stack in the debug version of the subsystem has been 5059considerably reduced. Previously, a debug structure was declared in every 5060function that used the debug macros. This structure has been removed in 5061favor of declaring the individual elements as parameters to the debug 5062functions. This reduces the cumulative stack use during nested execution of 5063ACPI function calls at the cost of a small increase in the code size of the 5064debug version of the subsystem. With assistance from Alexey Starikovskiy and 5065Len Brown. 5066 5067Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent 5068headers to define a macro that will return the current function name at 5069runtime (such as __FUNCTION__ or _func_, etc.) The function name is used by 5070the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the 5071compiler-dependent header, the function name is saved on the CPU stack (one 5072pointer per function.) This mechanism is used because apparently there 5073exists no standard ANSI-C defined macro that that returns the function name. 5074 5075Redesigned and reimplemented the "Owner ID" mechanism used to track 5076namespace objects created/deleted by ACPI tables and control method 5077execution. A bitmap is now used to allocate and free the IDs, thus solving 5078the wraparound problem present in the previous implementation. The size of 5079the namespace node descriptor was reduced by 2 bytes as a result (Alexey 5080Starikovskiy). 5081 5082Removed the UINT32_BIT and UINT16_BIT types that were used for the bitfield 5083flag definitions within the headers for the predefined ACPI tables. These 5084have been replaced by UINT8_BIT in order to increase the code portability of 5085the subsystem. If the use of UINT8 remains a problem, we may be forced to 5086eliminate bitfields entirely because of a lack of portability. 5087 5088Enhanced the performance of the AcpiUtUpdateObjectReference procedure. This 5089is a frequently used function and this improvement increases the performance 5090of the entire subsystem (Alexey Starikovskiy). 5091 5092Fixed several possible memory leaks and the inverse - premature object 5093deletion (Alexey Starikovskiy). 5094 5095Code and Data Size: Current and previous core subsystem library sizes are 5096shown below. These are the code and data sizes for the acpica.lib produced 5097by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5098any ACPI driver or OSPM code. The debug version of the code includes the 5099debug output trace mechanism and has a much larger code and data size. Note 5100that these values will vary depending on the efficiency of the compiler and 5101the compiler options used during generation. 5102 5103 Previous Release: 5104 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 5105 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 5106 Current Release: 5107 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 5108 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 5109 5110---------------------------------------- 511124 June 2005. Summary of changes for version 20050624: 5112 51131) ACPI CA Core Subsystem: 5114 5115Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for 5116the host-defined cache object. This allows the OSL implementation to define 5117and type this object in any manner desired, simplifying the OSL 5118implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for 5119Linux, and should be defined in the OS-specific header file for other 5120operating systems as required. 5121 5122Changed the interface to AcpiOsAcquireObject to directly return the 5123requested object as the function return (instead of ACPI_STATUS.) This 5124change was made for performance reasons, since this is the purpose of the 5125interface in the first place. AcpiOsAcquireObject is now similar to the 5126AcpiOsAllocate interface. 5127 5128Implemented a new AML debugger command named Businfo. This command displays 5129information about all devices that have an associate _PRT object. The _ADR, 5130_HID, _UID, and _CID are displayed for these devices. 5131 5132Modified the initialization sequence in AcpiInitializeSubsystem to call the 5133OSL interface AcpiOslInitialize first, before any local initialization. This 5134change was required because the global initialization now calls OSL 5135interfaces. 5136 5137Enhanced the Dump command to display the entire contents of Package objects 5138(including all sub-objects and their values.) 5139 5140Restructured the code base to split some files because of size and/or 5141because the code logically belonged in a separate file. New files are listed 5142below. All makefiles and project files included in the ACPI CA release have 5143been updated. 5144 utilities/utcache.c /* Local cache interfaces */ 5145 utilities/utmutex.c /* Local mutex support */ 5146 utilities/utstate.c /* State object support */ 5147 interpreter/parser/psloop.c /* Main AML parse loop */ 5148 5149Code and Data Size: Current and previous core subsystem library sizes are 5150shown below. These are the code and data sizes for the acpica.lib produced 5151by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5152any ACPI driver or OSPM code. The debug version of the code includes the 5153debug output trace mechanism and has a much larger code and data size. Note 5154that these values will vary depending on the efficiency of the compiler and 5155the compiler options used during generation. 5156 5157 Previous Release: 5158 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 5159 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 5160 Current Release: 5161 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 5162 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 5163 5164 51652) iASL Compiler/Disassembler: 5166 5167Fixed a regression introduced in version 20050513 where the use of a Package 5168object within a Case() statement caused a compile time exception. The 5169original behavior has been restored (a Match() operator is emitted.) 5170 5171---------------------------------------- 517217 June 2005. Summary of changes for version 20050617: 5173 51741) ACPI CA Core Subsystem: 5175 5176Moved the object cache operations into the OS interface layer (OSL) to allow 5177the host OS to handle these operations if desired (for example, the Linux 5178OSL will invoke the slab allocator). This support is optional; the compile 5179time define ACPI_USE_LOCAL_CACHE may be used to utilize the original cache 5180code in the ACPI CA core. The new OSL interfaces are shown below. See 5181utalloc.c for an example implementation, and acpiosxf.h for the exact 5182interface definitions. With assistance from Alexey Starikovskiy. 5183 AcpiOsCreateCache 5184 AcpiOsDeleteCache 5185 AcpiOsPurgeCache 5186 AcpiOsAcquireObject 5187 AcpiOsReleaseObject 5188 5189Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to return 5190and restore a flags parameter. This fits better with many OS lock models. 5191Note: the current execution state (interrupt handler or not) is no longer 5192passed to these interfaces. If necessary, the OSL must determine this state 5193by itself, a simple and fast operation. With assistance from Alexey 5194Starikovskiy. 5195 5196Fixed a problem in the ACPI table handling where a valid XSDT was assumed 5197present if the revision of the RSDP was 2 or greater. According to the ACPI 5198specification, the XSDT is optional in all cases, and the table manager 5199therefore now checks for both an RSDP >=2 and a valid XSDT pointer. 5200Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs contain 5201only the RSDT. 5202 5203Fixed an interpreter problem with the Mid() operator in the case of an input 5204string where the resulting output string is of zero length. It now correctly 5205returns a valid, null terminated string object instead of a string object 5206with a null pointer. 5207 5208Fixed a problem with the control method argument handling to allow a store 5209to an Arg object that already contains an object of type Device. The Device 5210object is now correctly overwritten. Previously, an error was returned. 5211 5212 5213Enhanced the debugger Find command to emit object values in addition to the 5214found object pathnames. The output format is the same as the dump namespace 5215command. 5216 5217Enhanced the debugger Set command. It now has the ability to set the value 5218of any Named integer object in the namespace (Previously, only method locals 5219and args could be set.) 5220 5221Code and Data Size: Current and previous core subsystem library sizes are 5222shown below. These are the code and data sizes for the acpica.lib produced 5223by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5224any ACPI driver or OSPM code. The debug version of the code includes the 5225debug output trace mechanism and has a much larger code and data size. Note 5226that these values will vary depending on the efficiency of the compiler and 5227the compiler options used during generation. 5228 5229 Previous Release: 5230 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 5231 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 5232 Current Release: 5233 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 5234 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 5235 5236 52372) iASL Compiler/Disassembler: 5238 5239Fixed a regression in the disassembler where if/else/while constructs were 5240output incorrectly. This problem was introduced in the previous release 5241(20050526). This problem also affected the single-step disassembly in the 5242debugger. 5243 5244Fixed a problem where compiling the reserved _OSI method would randomly (but 5245rarely) produce compile errors. 5246 5247Enhanced the disassembler to emit compilable code in the face of incorrect 5248AML resource descriptors. If the optional ResourceSourceIndex is present, 5249but the ResourceSource is not, do not emit the ResourceSourceIndex in the 5250disassembly. Otherwise, the resulting code cannot be compiled without 5251errors. 5252 5253---------------------------------------- 525426 May 2005. Summary of changes for version 20050526: 5255 52561) ACPI CA Core Subsystem: 5257 5258Implemented support to execute Type 1 and Type 2 AML opcodes appearing at 5259the module level (not within a control method.) These opcodes are executed 5260exactly once at the time the table is loaded. This type of code was legal up 5261until the release of ACPI 2.0B (2002) and is now supported within ACPI CA in 5262order to provide backwards compatibility with earlier BIOS implementations. 5263This eliminates the "Encountered executable code at module level" warning 5264that was previously generated upon detection of such code. 5265 5266Fixed a problem in the interpreter where an AE_NOT_FOUND exception could 5267inadvertently be generated during the lookup of namespace objects in the 5268second pass parse of ACPI tables and control methods. It appears that this 5269problem could occur during the resolution of forward references to namespace 5270objects. 5271 5272Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function, 5273corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This 5274allows the deadlock detection debug code to be compiled out in the normal 5275case, improving mutex performance (and overall subsystem performance) 5276considerably. 5277 5278Implemented a handful of miscellaneous fixes for possible memory leaks on 5279error conditions and error handling control paths. These fixes were 5280suggested by FreeBSD and the Coverity Prevent source code analysis tool. 5281 5282Added a check for a null RSDT pointer in AcpiGetFirmwareTable (tbxfroot.c) 5283to prevent a fault in this error case. 5284 5285Code and Data Size: Current and previous core subsystem library sizes are 5286shown below. These are the code and data sizes for the acpica.lib produced 5287by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5288any ACPI driver or OSPM code. The debug version of the code includes the 5289debug output trace mechanism and has a much larger code and data size. Note 5290that these values will vary depending on the efficiency of the compiler and 5291the compiler options used during generation. 5292 5293 Previous Release: 5294 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 5295 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 5296 Current Release: 5297 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 5298 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 5299 5300 53012) iASL Compiler/Disassembler: 5302 5303Implemented support to allow Type 1 and Type 2 ASL operators to appear at 5304the module level (not within a control method.) These operators will be 5305executed once at the time the table is loaded. This type of code was legal 5306up until the release of ACPI 2.0B (2002) and is now supported by the iASL 5307compiler in order to provide backwards compatibility with earlier BIOS ASL 5308code. 5309 5310The ACPI integer width (specified via the table revision ID or the -r 5311override, 32 or 64 bits) is now used internally during compile-time constant 5312folding to ensure that constants are truncated to 32 bits if necessary. 5313Previously, the revision ID value was only emitted in the AML table header. 5314 5315An error message is now generated for the Mutex and Method operators if the 5316SyncLevel parameter is outside the legal range of 0 through 15. 5317 5318Fixed a problem with the Method operator ParameterTypes list handling (ACPI 53193.0). Previously, more than 2 types or 2 arguments generated a syntax error. 5320The actual underlying implementation of method argument typechecking is 5321still under development, however. 5322 5323---------------------------------------- 532413 May 2005. Summary of changes for version 20050513: 5325 53261) ACPI CA Core Subsystem: 5327 5328Implemented support for PCI Express root bridges -- added support for device 5329PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup. 5330 5331The interpreter now automatically truncates incoming 64-bit constants to 32 5332bits if currently executing out of a 32-bit ACPI table (Revision < 2). This 5333also affects the iASL compiler constant folding. (Note: as per below, the 5334iASL compiler no longer allows 64-bit constants within 32-bit tables.) 5335 5336Fixed a problem where string and buffer objects with "static" pointers 5337(pointers to initialization data within an ACPI table) were not handled 5338consistently. The internal object copy operation now always copies the data 5339to a newly allocated buffer, regardless of whether the source object is 5340static or not. 5341 5342Fixed a problem with the FromBCD operator where an implicit result 5343conversion was improperly performed while storing the result to the target 5344operand. Since this is an "explicit conversion" operator, the implicit 5345conversion should never be performed on the output. 5346 5347Fixed a problem with the CopyObject operator where a copy to an existing 5348named object did not always completely overwrite the existing object stored 5349at name. Specifically, a buffer-to-buffer copy did not delete the existing 5350buffer. 5351 5352Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces and 5353structs for consistency. 5354 5355Code and Data Size: Current and previous core subsystem library sizes are 5356shown below. These are the code and data sizes for the acpica.lib produced 5357by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5358any ACPI driver or OSPM code. The debug version of the code includes the 5359debug output trace mechanism and has a much larger code and data size. Note 5360that these values will vary depending on the efficiency of the compiler and 5361the compiler options used during generation. 5362 5363 Previous Release: 5364 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 5365 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 5366 Current Release: (Same sizes) 5367 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 5368 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 5369 5370 53712) iASL Compiler/Disassembler: 5372 5373The compiler now emits a warning if an attempt is made to generate a 64-bit 5374integer constant from within a 32-bit ACPI table (Revision < 2). The integer 5375is truncated to 32 bits. 5376 5377Fixed a problem with large package objects: if the static length of the 5378package is greater than 255, the "variable length package" opcode is 5379emitted. Previously, this caused an error. This requires an update to the 5380ACPI spec, since it currently (incorrectly) states that packages larger than 5381255 elements are not allowed. 5382 5383The disassembler now correctly handles variable length packages and packages 5384larger than 255 elements. 5385 5386---------------------------------------- 538708 April 2005. Summary of changes for version 20050408: 5388 53891) ACPI CA Core Subsystem: 5390 5391Fixed three cases in the interpreter where an "index" argument to an ASL 5392function was still (internally) 32 bits instead of the required 64 bits. 5393This was the Index argument to the Index, Mid, and Match operators. 5394 5395The "strupr" function is now permanently local (AcpiUtStrupr), since this is 5396not a POSIX-defined function and not present in most kernel-level C 5397libraries. All references to the C library strupr function have been removed 5398from the headers. 5399 5400Completed the deployment of static functions/prototypes. All prototypes with 5401the static attribute have been moved from the headers to the owning C file. 5402 5403Implemented an extract option (-e) for the AcpiBin utility (AML binary 5404utility). This option allows the utility to extract individual ACPI tables 5405from the output of AcpiDmp. It provides the same functionality of the 5406acpixtract.pl perl script without the worry of setting the correct perl 5407options. AcpiBin runs on Windows and has not yet been generated/validated in 5408the Linux/Unix environment (but should be soon). 5409 5410Updated and fixed the table dump option for AcpiBin (-d). This option 5411converts a single ACPI table to a hex/ascii file, similar to the output of 5412AcpiDmp. 5413 5414Code and Data Size: Current and previous core subsystem library sizes are 5415shown below. These are the code and data sizes for the acpica.lib produced 5416by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5417any ACPI driver or OSPM code. The debug version of the code includes the 5418debug output trace mechanism and has a much larger code and data size. Note 5419that these values will vary depending on the efficiency of the compiler and 5420the compiler options used during generation. 5421 5422 Previous Release: 5423 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 5424 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 5425 Current Release: 5426 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 5427 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 5428 5429 54302) iASL Compiler/Disassembler: 5431 5432Disassembler fix: Added a check to ensure that the table length found in the 5433ACPI table header within the input file is not longer than the actual input 5434file size. This indicates some kind of file or table corruption. 5435 5436---------------------------------------- 543729 March 2005. Summary of changes for version 20050329: 5438 54391) ACPI CA Core Subsystem: 5440 5441An error is now generated if an attempt is made to create a Buffer Field of 5442length zero (A CreateField with a length operand of zero.) 5443 5444The interpreter now issues a warning whenever executable code at the module 5445level is detected during ACPI table load. This will give some idea of the 5446prevalence of this type of code. 5447 5448Implemented support for references to named objects (other than control 5449methods) within package objects. 5450 5451Enhanced package object output for the debug object. Package objects are now 5452completely dumped, showing all elements. 5453 5454Enhanced miscellaneous object output for the debug object. Any object can 5455now be written to the debug object (for example, a device object can be 5456written, and the type of the object will be displayed.) 5457 5458The "static" qualifier has been added to all local functions across both the 5459core subsystem and the iASL compiler. 5460 5461The number of "long" lines (> 80 chars) within the source has been 5462significantly reduced, by about 1/3. 5463 5464Cleaned up all header files to ensure that all CA/iASL functions are 5465prototyped (even static functions) and the formatting is consistent. 5466 5467Two new header files have been added, acopcode.h and acnames.h. 5468 5469Removed several obsolete functions that were no longer used. 5470 5471Code and Data Size: Current and previous core subsystem library sizes are 5472shown below. These are the code and data sizes for the acpica.lib produced 5473by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5474any ACPI driver or OSPM code. The debug version of the code includes the 5475debug output trace mechanism and has a much larger code and data size. Note 5476that these values will vary depending on the efficiency of the compiler and 5477the compiler options used during generation. 5478 5479 Previous Release: 5480 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 5481 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 5482 Current Release: 5483 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 5484 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 5485 5486 5487 54882) iASL Compiler/Disassembler: 5489 5490Fixed a problem with the resource descriptor generation/support. For the 5491ResourceSourceIndex and the ResourceSource fields, both must be present, or 5492both must be not present - can't have one without the other. 5493 5494The compiler now returns non-zero from the main procedure if any errors have 5495occurred during the compilation. 5496 5497 5498---------------------------------------- 549909 March 2005. Summary of changes for version 20050309: 5500 55011) ACPI CA Core Subsystem: 5502 5503The string-to-buffer implicit conversion code has been modified again after 5504a change to the ACPI specification. In order to match the behavior of the 5505other major ACPI implementation, the target buffer is no longer truncated if 5506the source string is smaller than an existing target buffer. This change 5507requires an update to the ACPI spec, and should eliminate the recent 5508AE_AML_BUFFER_LIMIT issues. 5509 5510The "implicit return" support was rewritten to a new algorithm that solves 5511the general case. Rather than attempt to determine when a method is about to 5512exit, the result of every ASL operator is saved momentarily until the very 5513next ASL operator is executed. Therefore, no matter how the method exits, 5514there will always be a saved implicit return value. This feature is only 5515enabled with the AcpiGbl_EnableInterpreterSlack flag, and should eliminate 5516AE_AML_NO_RETURN_VALUE errors when enabled. 5517 5518Implemented implicit conversion support for the predicate (operand) of the 5519If, Else, and While operators. String and Buffer arguments are automatically 5520converted to Integers. 5521 5522Changed the string-to-integer conversion behavior to match the new ACPI 5523errata: "If no integer object exists, a new integer is created. The ASCII 5524string is interpreted as a hexadecimal constant. Each string character is 5525interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting 5526with the first character as the most significant digit, and ending with the 5527first non-hexadecimal character or end-of-string." This means that the first 5528non-hex character terminates the conversion and this is the code that was 5529changed. 5530 5531Fixed a problem where the ObjectType operator would fail (fault) when used 5532on an Index of a Package which pointed to a null package element. The 5533operator now properly returns zero (Uninitialized) in this case. 5534 5535Fixed a problem where the While operator used excessive memory by not 5536properly popping the result stack during execution. There was no memory leak 5537after execution, however. (Code provided by Valery Podrezov.) 5538 5539Fixed a problem where references to control methods within Package objects 5540caused the method to be invoked, instead of producing a reference object 5541pointing to the method. 5542 5543Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree) to 5544improve performance and reduce code size. (Code provided by Alexey 5545Starikovskiy.) 5546 5547Code and Data Size: Current and previous core subsystem library sizes are 5548shown below. These are the code and data sizes for the acpica.lib produced 5549by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5550any ACPI driver or OSPM code. The debug version of the code includes the 5551debug output trace mechanism and has a much larger code and data size. Note 5552that these values will vary depending on the efficiency of the compiler and 5553the compiler options used during generation. 5554 5555 Previous Release: 5556 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 5557 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 5558 Current Release: 5559 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 5560 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 5561 5562 55632) iASL Compiler/Disassembler: 5564 5565Fixed a problem with the Return operator with no arguments. Since the AML 5566grammar for the byte encoding requires an operand for the Return opcode, the 5567compiler now emits a Return(Zero) for this case. An ACPI specification 5568update has been written for this case. 5569 5570For tables other than the DSDT, namepath optimization is automatically 5571disabled. This is because SSDTs can be loaded anywhere in the namespace, the 5572compiler has no knowledge of where, and thus cannot optimize namepaths. 5573 5574Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was 5575inadvertently omitted from the ACPI specification, and will require an 5576update to the spec. 5577 5578The source file scan for ASCII characters is now optional (-a). This change 5579was made because some vendors place non-ascii characters within comments. 5580However, the scan is simply a brute-force byte compare to ensure all 5581characters in the file are in the range 0x00 to 0x7F. 5582 5583Fixed a problem with the CondRefOf operator where the compiler was 5584inappropriately checking for the existence of the target. Since the point of 5585the operator is to check for the existence of the target at run-time, the 5586compiler no longer checks for the target existence. 5587 5588Fixed a problem where errors generated from the internal AML interpreter 5589during constant folding were not handled properly, causing a fault. 5590 5591Fixed a problem with overly aggressive range checking for the Stall 5592operator. The valid range (max 255) is now only checked if the operand is of 5593type Integer. All other operand types cannot be statically checked. 5594 5595Fixed a problem where control method references within the RefOf, DeRefOf, 5596and ObjectType operators were not treated properly. They are now treated as 5597actual references, not method invocations. 5598 5599Fixed and enhanced the "list namespace" option (-ln). This option was broken 5600a number of releases ago. 5601 5602Improved error handling for the Field, IndexField, and BankField operators. 5603The compiler now cleanly reports and recovers from errors in the field 5604component (FieldUnit) list. 5605 5606Fixed a disassembler problem where the optional ResourceDescriptor fields 5607TRS and TTP were not always handled correctly. 5608 5609Disassembler - Comments in output now use "//" instead of "/*" 5610 5611---------------------------------------- 561228 February 2005. Summary of changes for version 20050228: 5613 56141) ACPI CA Core Subsystem: 5615 5616Fixed a problem where the result of an Index() operator (an object 5617reference) must increment the reference count on the target object for the 5618life of the object reference. 5619 5620Implemented AML Interpreter and Debugger support for the new ACPI 3.0 5621Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and WordSpace 5622resource descriptors. 5623 5624Implemented support in the _OSI method for the ACPI 3.0 "Extended Address 5625Space Descriptor" string, indicating interpreter support for the descriptors 5626above. 5627 5628Implemented header support for the new ACPI 3.0 FADT flag bits. 5629 5630Implemented header support for the new ACPI 3.0 PCI Express bits for the PM1 5631status/enable registers. 5632 5633Updated header support for the MADT processor local Apic struct and MADT 5634platform interrupt source struct for new ACPI 3.0 fields. 5635 5636Implemented header support for the SRAT and SLIT ACPI tables. 5637 5638Implemented the -s switch in AcpiExec to enable the "InterpreterSlack" flag 5639at runtime. 5640 5641Code and Data Size: Current and previous core subsystem library sizes are 5642shown below. These are the code and data sizes for the acpica.lib produced 5643by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5644any ACPI driver or OSPM code. The debug version of the code includes the 5645debug output trace mechanism and has a much larger code and data size. Note 5646that these values will vary depending on the efficiency of the compiler and 5647the compiler options used during generation. 5648 5649 Previous Release: 5650 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 5651 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 5652 Current Release: 5653 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 5654 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 5655 5656 56572) iASL Compiler/Disassembler: 5658 5659Fixed a problem with the internal 64-bit String-to-integer conversion with 5660strings less than two characters long. 5661 5662Fixed a problem with constant folding where the result of the Index() 5663operator can not be considered a constant. This means that Index() cannot be 5664a type3 opcode and this will require an update to the ACPI specification. 5665 5666Disassembler: Implemented support for the TTP, MTP, and TRS resource 5667descriptor fields. These fields were inadvertently ignored and not output in 5668the disassembly of the resource descriptor. 5669 5670 5671 ---------------------------------------- 567211 February 2005. Summary of changes for version 20050211: 5673 56741) ACPI CA Core Subsystem: 5675 5676Implemented ACPI 3.0 support for implicit conversion within the Match() 5677operator. MatchObjects can now be of type integer, buffer, or string instead 5678of just type integer. Package elements are implicitly converted to the type 5679of the MatchObject. This change aligns the behavior of Match() with the 5680behavior of the other logical operators (LLess(), etc.) It also requires an 5681errata change to the ACPI specification as this support was intended for 5682ACPI 3.0, but was inadvertently omitted. 5683 5684Fixed a problem with the internal implicit "to buffer" conversion. Strings 5685that are converted to buffers will cause buffer truncation if the string is 5686smaller than the target buffer. Integers that are converted to buffers will 5687not cause buffer truncation, only zero extension (both as per the ACPI 5688spec.) The problem was introduced when code was added to truncate the 5689buffer, but this should not be performed in all cases, only the string case. 5690 5691Fixed a problem with the Buffer and Package operators where the interpreter 5692would get confused if two such operators were used as operands to an ASL 5693operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result 5694stack was not being popped after the execution of these operators, resulting 5695in an AE_NO_RETURN_VALUE exception. 5696 5697Fixed a problem with constructs of the form Store(Index(...),...). The 5698reference object returned from Index was inadvertently resolved to an actual 5699value. This problem was introduced in version 20050114 when the behavior of 5700Store() was modified to restrict the object types that can be used as the 5701source operand (to match the ACPI specification.) 5702 5703Reduced excessive stack use within the AcpiGetObjectInfo procedure. 5704 5705Added a fix to aclinux.h to allow generation of AcpiExec on Linux. 5706 5707Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct. 5708 5709Code and Data Size: Current and previous core subsystem library sizes are 5710shown below. These are the code and data sizes for the acpica.lib produced 5711by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5712any ACPI driver or OSPM code. The debug version of the code includes the 5713debug output trace mechanism and has a much larger code and data size. Note 5714that these values will vary depending on the efficiency of the compiler and 5715the compiler options used during generation. 5716 5717 Previous Release: 5718 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 5719 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 5720 Current Release: 5721 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 5722 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 5723 5724 57252) iASL Compiler/Disassembler: 5726 5727Fixed a code generation problem in the constant folding optimization code 5728where incorrect code was generated if a constant was reduced to a buffer 5729object (i.e., a reduced type 5 opcode.) 5730 5731Fixed a typechecking problem for the ToBuffer operator. Caused by an 5732incorrect return type in the internal opcode information table. 5733 5734---------------------------------------- 573525 January 2005. Summary of changes for version 20050125: 5736 57371) ACPI CA Core Subsystem: 5738 5739Fixed a recently introduced problem with the Global Lock where the 5740underlying semaphore was not created. This problem was introduced in 5741version 20050114, and caused an AE_AML_NO_OPERAND exception during an 5742Acquire() operation on _GL. 5743 5744The local object cache is now optional, and is disabled by default. Both 5745AcpiExec and the iASL compiler enable the cache because they run in user 5746mode and this enhances their performance. #define ACPI_ENABLE_OBJECT_CACHE 5747to enable the local cache. 5748 5749Fixed an issue in the internal function AcpiUtEvaluateObject concerning the 5750optional "implicit return" support where an error was returned if no return 5751object was expected, but one was implicitly returned. AE_OK is now returned 5752in this case and the implicitly returned object is deleted. 5753AcpiUtEvaluateObject is only occasionally used, and only to execute reserved 5754methods such as _STA and _INI where the return type is known up front. 5755 5756Fixed a few issues with the internal convert-to-integer code. It now returns 5757an error if an attempt is made to convert a null string, a string of only 5758blanks/tabs, or a zero-length buffer. This affects both implicit conversion 5759and explicit conversion via the ToInteger() operator. 5760 5761The internal debug code in AcpiUtAcquireMutex has been commented out. It is 5762not needed for normal operation and should increase the performance of the 5763entire subsystem. The code remains in case it is needed for debug purposes 5764again. 5765 5766The AcpiExec source and makefile are included in the Unix/Linux package for 5767the first time. 5768 5769Code and Data Size: Current and previous core subsystem library sizes are 5770shown below. These are the code and data sizes for the acpica.lib produced 5771by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5772any ACPI driver or OSPM code. The debug version of the code includes the 5773debug output trace mechanism and has a much larger code and data size. Note 5774that these values will vary depending on the efficiency of the compiler and 5775the compiler options used during generation. 5776 5777 Previous Release: 5778 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 5779 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 5780 Current Release: 5781 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 5782 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 5783 57842) iASL Compiler/Disassembler: 5785 5786Switch/Case support: A warning is now issued if the type of the Switch value 5787cannot be determined at compile time. For example, Switch(Arg0) will 5788generate the warning, and the type is assumed to be an integer. As per the 5789ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate the 5790warning. 5791 5792Switch/Case support: Implemented support for buffer and string objects as 5793the switch value. This is an ACPI 3.0 feature, now that LEqual supports 5794buffers and strings. 5795 5796Switch/Case support: The emitted code for the LEqual() comparisons now uses 5797the switch value as the first operand, not the second. The case value is now 5798the second operand, and this allows the case value to be implicitly 5799converted to the type of the switch value, not the other way around. 5800 5801Switch/Case support: Temporary variables are now emitted immediately within 5802the control method, not at the global level. This means that there are now 580336 temps available per-method, not 36 temps per-module as was the case with 5804the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.) 5805 5806---------------------------------------- 580714 January 2005. Summary of changes for version 20050114: 5808 5809Added 2005 copyright to all module headers. This affects every module in 5810the core subsystem, iASL compiler, and the utilities. 5811 58121) ACPI CA Core Subsystem: 5813 5814Fixed an issue with the String-to-Buffer conversion code where the string 5815null terminator was not included in the buffer after conversion, but there 5816is existing ASL that assumes the string null terminator is included. This is 5817the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was 5818introduced in the previous version when the code was updated to correctly 5819set the converted buffer size as per the ACPI specification. The ACPI spec 5820is ambiguous and will be updated to specify that the null terminator must be 5821included in the converted buffer. This also affects the ToBuffer() ASL 5822operator. 5823 5824Fixed a problem with the Mid() ASL/AML operator where it did not work 5825correctly on Buffer objects. Newly created sub-buffers were not being marked 5826as initialized. 5827 5828 5829Fixed a problem in AcpiTbFindTable where incorrect string compares were 5830performed on the OemId and OemTableId table header fields. These fields are 5831not null terminated, so strncmp is now used instead of strcmp. 5832 5833Implemented a restriction on the Store() ASL/AML operator to align the 5834behavior with the ACPI specification. Previously, any object could be used 5835as the source operand. Now, the only objects that may be used are Integers, 5836Buffers, Strings, Packages, Object References, and DDB Handles. If 5837necessary, the original behavior can be restored by enabling the 5838EnableInterpreterSlack flag. 5839 5840Enhanced the optional "implicit return" support to allow an implicit return 5841value from methods that are invoked externally via the AcpiEvaluateObject 5842interface. This enables implicit returns from the _STA and _INI methods, 5843for example. 5844 5845Changed the Revision() ASL/AML operator to return the current version of the 5846AML interpreter, in the YYYYMMDD format. Previously, it incorrectly returned 5847the supported ACPI version (This is the function of the _REV method). 5848 5849Updated the _REV predefined method to return the currently supported version 5850of ACPI, now 3. 5851 5852Implemented batch mode option for the AcpiExec utility (-b). 5853 5854Code and Data Size: Current and previous core subsystem library sizes are 5855shown below. These are the code and data sizes for the acpica.lib produced 5856by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5857any ACPI driver or OSPM code. The debug version of the code includes the 5858debug output trace mechanism and has a much larger code and data size. Note 5859that these values will vary depending on the efficiency of the compiler and 5860the compiler options used during generation. 5861 5862 Previous Release: 5863 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 5864 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 5865 Current Release: 5866 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 5867 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 5868 5869---------------------------------------- 587010 December 2004. Summary of changes for version 20041210: 5871 5872ACPI 3.0 support is nearing completion in both the iASL compiler and the 5873ACPI CA core subsystem. 5874 58751) ACPI CA Core Subsystem: 5876 5877Fixed a problem in the ToDecimalString operator where the resulting string 5878length was incorrectly calculated. The length is now calculated exactly, 5879eliminating incorrect AE_STRING_LIMIT exceptions. 5880 5881Fixed a problem in the ToHexString operator to allow a maximum 200 character 5882string to be produced. 5883 5884Fixed a problem in the internal string-to-buffer and buffer-to-buffer copy 5885routine where the length of the resulting buffer was not truncated to the 5886new size (if the target buffer already existed). 5887 5888Code and Data Size: Current and previous core subsystem library sizes are 5889shown below. These are the code and data sizes for the acpica.lib produced 5890by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5891any ACPI driver or OSPM code. The debug version of the code includes the 5892debug output trace mechanism and has a much larger code and data size. Note 5893that these values will vary depending on the efficiency of the compiler and 5894the compiler options used during generation. 5895 5896 Previous Release: 5897 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 5898 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 5899 Current Release: 5900 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 5901 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 5902 5903 59042) iASL Compiler/Disassembler: 5905 5906Implemented the new ACPI 3.0 resource template macros - DWordSpace, 5907ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace. 5908Includes support in the disassembler. 5909 5910Implemented support for the new (ACPI 3.0) parameter to the Register macro, 5911AccessSize. 5912 5913Fixed a problem where the _HE resource name for the Interrupt macro was 5914referencing bit 0 instead of bit 1. 5915 5916Implemented check for maximum 255 interrupts in the Interrupt macro. 5917 5918Fixed a problem with the predefined resource descriptor names where 5919incorrect AML code was generated if the offset within the resource buffer 5920was 0 or 1. The optimizer shortened the AML code to a single byte opcode 5921but did not update the surrounding package lengths. 5922 5923Changes to the Dma macro: All channels within the channel list must be in 5924the range 0-7. Maximum 8 channels can be specified. BusMaster operand is 5925optional (default is BusMaster). 5926 5927Implemented check for maximum 7 data bytes for the VendorShort macro. 5928 5929The ReadWrite parameter is now optional for the Memory32 and similar macros. 5930 5931---------------------------------------- 593203 December 2004. Summary of changes for version 20041203: 5933 59341) ACPI CA Core Subsystem: 5935 5936The low-level field insertion/extraction code (exfldio) has been completely 5937rewritten to eliminate unnecessary complexity, bugs, and boundary 5938conditions. 5939 5940Fixed a problem in the ToInteger, ToBuffer, ToHexString, and ToDecimalString 5941operators where the input operand could be inadvertently deleted if no 5942conversion was necessary (e.g., if the input to ToInteger was an Integer 5943object.) 5944 5945Fixed a problem with the ToDecimalString and ToHexString where an incorrect 5946exception code was returned if the resulting string would be > 200 chars. 5947AE_STRING_LIMIT is now returned. 5948 5949Fixed a problem with the Concatenate operator where AE_OK was always 5950returned, even if the operation failed. 5951 5952Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128 5953semaphores to be allocated. 5954 5955Code and Data Size: Current and previous core subsystem library sizes are 5956shown below. These are the code and data sizes for the acpica.lib produced 5957by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5958any ACPI driver or OSPM code. The debug version of the code includes the 5959debug output trace mechanism and has a much larger code and data size. Note 5960that these values will vary depending on the efficiency of the compiler and 5961the compiler options used during generation. 5962 5963 Previous Release: 5964 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 5965 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 5966 Current Release: 5967 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 5968 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 5969 5970 59712) iASL Compiler/Disassembler: 5972 5973Fixed typechecking for the ObjectType and SizeOf operators. Problem was 5974recently introduced in 20041119. 5975 5976Fixed a problem with the ToUUID macro where the upper nybble of each buffer 5977byte was inadvertently set to zero. 5978 5979---------------------------------------- 598019 November 2004. Summary of changes for version 20041119: 5981 59821) ACPI CA Core Subsystem: 5983 5984Fixed a problem in the internal ConvertToInteger routine where new integers 5985were not truncated to 32 bits for 32-bit ACPI tables. This routine converts 5986buffers and strings to integers. 5987 5988Implemented support to store a value to an Index() on a String object. This 5989is an ACPI 2.0 feature that had not yet been implemented. 5990 5991Implemented new behavior for storing objects to individual package elements 5992(via the Index() operator). The previous behavior was to invoke the implicit 5993conversion rules if an object was already present at the index. The new 5994behavior is to simply delete any existing object and directly store the new 5995object. Although the ACPI specification seems unclear on this subject, other 5996ACPI implementations behave in this manner. (This is the root of the 5997AE_BAD_HEX_CONSTANT issue.) 5998 5999Modified the RSDP memory scan mechanism to support the extended checksum for 6000ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid 6001RSDP signature is found with a valid checksum. 6002 6003Code and Data Size: Current and previous core subsystem library sizes are 6004shown below. These are the code and data sizes for the acpica.lib produced 6005by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6006any ACPI driver or OSPM code. The debug version of the code includes the 6007debug output trace mechanism and has a much larger code and data size. Note 6008that these values will vary depending on the efficiency of the compiler and 6009the compiler options used during generation. 6010 6011 Previous Release: 6012 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 6013 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 6014 Current Release: 6015 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 6016 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 6017 6018 60192) iASL Compiler/Disassembler: 6020 6021Fixed a missing semicolon in the aslcompiler.y file. 6022 6023---------------------------------------- 602405 November 2004. Summary of changes for version 20041105: 6025 60261) ACPI CA Core Subsystem: 6027 6028Implemented support for FADT revision 2. This was an interim table (between 6029ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register. 6030 6031Implemented optional support to allow uninitialized LocalX and ArgX 6032variables in a control method. The variables are initialized to an Integer 6033object with a value of zero. This support is enabled by setting the 6034AcpiGbl_EnableInterpreterSlack flag to TRUE. 6035 6036Implemented support for Integer objects for the SizeOf operator. Either 4 6037or 8 is returned, depending on the current integer size (32-bit or 64-bit, 6038depending on the parent table revision). 6039 6040Fixed a problem in the implementation of the SizeOf and ObjectType operators 6041where the operand was resolved to a value too early, causing incorrect 6042return values for some objects. 6043 6044Fixed some possible memory leaks during exceptional conditions. 6045 6046Code and Data Size: Current and previous core subsystem library sizes are 6047shown below. These are the code and data sizes for the acpica.lib produced 6048by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6049any ACPI driver or OSPM code. The debug version of the code includes the 6050debug output trace mechanism and has a much larger code and data size. Note 6051that these values will vary depending on the efficiency of the compiler and 6052the compiler options used during generation. 6053 6054 Previous Release: 6055 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 6056 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 6057 Current Release: 6058 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 6059 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 6060 6061 60622) iASL Compiler/Disassembler: 6063 6064Implemented support for all ACPI 3.0 reserved names and methods. 6065 6066Implemented all ACPI 3.0 grammar elements in the front-end, including 6067support for semicolons. 6068 6069Implemented the ACPI 3.0 Function() and ToUUID() macros 6070 6071Fixed a problem in the disassembler where a Scope() operator would not be 6072emitted properly if the target of the scope was in another table. 6073 6074---------------------------------------- 607515 October 2004. Summary of changes for version 20041015: 6076 6077Note: ACPI CA is currently undergoing an in-depth and complete formal 6078evaluation to test/verify the following areas. Other suggestions are 6079welcome. This will result in an increase in the frequency of releases and 6080the number of bug fixes in the next few months. 6081 - Functional tests for all ASL/AML operators 6082 - All implicit/explicit type conversions 6083 - Bit fields and operation regions 6084 - 64-bit math support and 32-bit-only "truncated" math support 6085 - Exceptional conditions, both compiler and interpreter 6086 - Dynamic object deletion and memory leaks 6087 - ACPI 3.0 support when implemented 6088 - External interfaces to the ACPI subsystem 6089 6090 60911) ACPI CA Core Subsystem: 6092 6093Fixed two alignment issues on 64-bit platforms - within debug statements in 6094AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the Address 6095field within the non-aligned ACPI generic address structure. 6096 6097Fixed a problem in the Increment and Decrement operators where incorrect 6098operand resolution could result in the inadvertent modification of the 6099original integer when the integer is passed into another method as an 6100argument and the arg is then incremented/decremented. 6101 6102Fixed a problem in the FromBCD operator where the upper 32-bits of a 64-bit 6103BCD number were truncated during conversion. 6104 6105Fixed a problem in the ToDecimal operator where the length of the resulting 6106string could be set incorrectly too long if the input operand was a Buffer 6107object. 6108 6109Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte (0) 6110within a buffer would prematurely terminate a compare between buffer 6111objects. 6112 6113Added a check for string overflow (>200 characters as per the ACPI 6114specification) during the Concatenate operator with two string operands. 6115 6116Code and Data Size: Current and previous core subsystem library sizes are 6117shown below. These are the code and data sizes for the acpica.lib produced 6118by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6119any ACPI driver or OSPM code. The debug version of the code includes the 6120debug output trace mechanism and has a much larger code and data size. Note 6121that these values will vary depending on the efficiency of the compiler and 6122the compiler options used during generation. 6123 6124 Previous Release: 6125 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 6126 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 6127 Current Release: 6128 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 6129 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 6130 6131 6132 61332) iASL Compiler/Disassembler: 6134 6135Allow the use of the ObjectType operator on uninitialized Locals and Args 6136(returns 0 as per the ACPI specification). 6137 6138Fixed a problem where the compiler would fault if there was a syntax error 6139in the FieldName of all of the various CreateXXXField operators. 6140 6141Disallow the use of lower case letters within the EISAID macro, as per the 6142ACPI specification. All EISAID strings must be of the form "UUUNNNN" Where 6143U is an uppercase letter and N is a hex digit. 6144 6145 6146---------------------------------------- 614706 October 2004. Summary of changes for version 20041006: 6148 61491) ACPI CA Core Subsystem: 6150 6151Implemented support for the ACPI 3.0 Timer operator. This ASL function 6152implements a 64-bit timer with 100 nanosecond granularity. 6153 6154Defined a new OSL interface, AcpiOsGetTimer. This interface is used to 6155implement the ACPI 3.0 Timer operator. This allows the host OS to implement 6156the timer with the best clock available. Also, it keeps the core subsystem 6157out of the clock handling business, since the host OS (usually) performs 6158this function. 6159 6160Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write) 6161functions use a 64-bit address which is part of the packed ACPI Generic 6162Address Structure. Since the structure is non-aligned, the alignment macros 6163are now used to extract the address to a local variable before use. 6164 6165Fixed a problem where the ToInteger operator assumed all input strings were 6166hexadecimal. The operator now handles both decimal strings and hex strings 6167(prefixed with "0x"). 6168 6169Fixed a problem where the string length in the string object created as a 6170result of the internal ConvertToString procedure could be incorrect. This 6171potentially affected all implicit conversions and also the ToDecimalString 6172and ToHexString operators. 6173 6174Fixed two problems in the ToString operator. If the length parameter was 6175zero, an incorrect string object was created and the value of the input 6176length parameter was inadvertently changed from zero to Ones. 6177 6178Fixed a problem where the optional ResourceSource string in the ExtendedIRQ 6179resource macro was ignored. 6180 6181Simplified the interfaces to the internal division functions, reducing code 6182size and complexity. 6183 6184Code and Data Size: Current and previous core subsystem library sizes are 6185shown below. These are the code and data sizes for the acpica.lib produced 6186by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6187any ACPI driver or OSPM code. The debug version of the code includes the 6188debug output trace mechanism and has a much larger code and data size. Note 6189that these values will vary depending on the efficiency of the compiler and 6190the compiler options used during generation. 6191 6192 Previous Release: 6193 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 6194 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 6195 Current Release: 6196 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 6197 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 6198 6199 62002) iASL Compiler/Disassembler: 6201 6202Implemented support for the ACPI 3.0 Timer operator. 6203 6204Fixed a problem where the Default() operator was inadvertently ignored in a 6205Switch/Case block. This was a problem in the translation of the Switch 6206statement to If...Else pairs. 6207 6208Added support to allow a standalone Return operator, with no parentheses (or 6209operands). 6210 6211Fixed a problem with code generation for the ElseIf operator where the 6212translated Else...If parse tree was improperly constructed leading to the 6213loss of some code. 6214 6215---------------------------------------- 621622 September 2004. Summary of changes for version 20040922: 6217 62181) ACPI CA Core Subsystem: 6219 6220Fixed a problem with the implementation of the LNot() operator where "Ones" 6221was not returned for the TRUE case. Changed the code to return Ones instead 6222of (!Arg) which was usually 1. This change affects iASL constant folding for 6223this operator also. 6224 6225Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was not 6226initialized properly -- Now zero the entire buffer in this case where the 6227buffer already exists. 6228 6229Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32 6230Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all 6231related code considerably. This will require changes/updates to all OS 6232interface layers (OSLs.) 6233 6234Implemented a new external interface, AcpiInstallExceptionHandler, to allow 6235a system exception handler to be installed. This handler is invoked upon any 6236run-time exception that occurs during control method execution. 6237 6238Added support for the DSDT in AcpiTbFindTable. This allows the 6239DataTableRegion() operator to access the local copy of the DSDT. 6240 6241Code and Data Size: Current and previous core subsystem library sizes are 6242shown below. These are the code and data sizes for the acpica.lib produced 6243by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6244any ACPI driver or OSPM code. The debug version of the code includes the 6245debug output trace mechanism and has a much larger code and data size. Note 6246that these values will vary depending on the efficiency of the compiler and 6247the compiler options used during generation. 6248 6249 Previous Release: 6250 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 6251 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 6252 Current Release: 6253 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 6254 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 6255 6256 62572) iASL Compiler/Disassembler: 6258 6259Fixed a problem with constant folding and the LNot operator. LNot was 6260returning 1 in the TRUE case, not Ones as per the ACPI specification. This 6261could result in the generation of an incorrect folded/reduced constant. 6262 6263End-Of-File is now allowed within a "//"-style comment. A parse error no 6264longer occurs if such a comment is at the very end of the input ASL source 6265file. 6266 6267Implemented the "-r" option to override the Revision in the table header. 6268The initial use of this option will be to simplify the evaluation of the AML 6269interpreter by allowing a single ASL source module to be compiled for either 627032-bit or 64-bit integers. 6271 6272 6273---------------------------------------- 627427 August 2004. Summary of changes for version 20040827: 6275 62761) ACPI CA Core Subsystem: 6277 6278- Implemented support for implicit object conversion in the non-numeric 6279logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual, and 6280LNotEqual.) Any combination of Integers/Strings/Buffers may now be used; 6281the second operand is implicitly converted on the fly to match the type of 6282the first operand. For example: 6283 6284 LEqual (Source1, Source2) 6285 6286Source1 and Source2 must each evaluate to an integer, a string, or a buffer. 6287The data type of Source1 dictates the required type of Source2. Source2 is 6288implicitly converted if necessary to match the type of Source1. 6289 6290- Updated and corrected the behavior of the string conversion support. The 6291rules concerning conversion of buffers to strings (according to the ACPI 6292specification) are as follows: 6293 6294ToDecimalString - explicit byte-wise conversion of buffer to string of 6295decimal values (0-255) separated by commas. ToHexString - explicit byte-wise 6296conversion of buffer to string of hex values (0-FF) separated by commas. 6297ToString - explicit byte-wise conversion of buffer to string. Byte-by-byte 6298copy with no transform except NULL terminated. Any other implicit buffer-to- 6299string conversion - byte-wise conversion of buffer to string of hex values 6300(0-FF) separated by spaces. 6301 6302- Fixed typo in definition of AcpiGbl_EnableInterpreterSlack. 6303 6304- Fixed a problem in AcpiNsGetPathnameLength where the returned length was 6305one byte too short in the case of a node in the root scope. This could 6306cause a fault during debug output. 6307 6308- Code and Data Size: Current and previous core subsystem library sizes are 6309shown below. These are the code and data sizes for the acpica.lib produced 6310by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6311any ACPI driver or OSPM code. The debug version of the code includes the 6312debug output trace mechanism and has a much larger code and data size. Note 6313that these values will vary depending on the efficiency of the compiler and 6314the compiler options used during generation. 6315 6316 Previous Release: 6317 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 6318 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 6319 Current Release: 6320 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 6321 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 6322 6323 63242) iASL Compiler/Disassembler: 6325 6326- Fixed a Linux generation error. 6327 6328 6329---------------------------------------- 633016 August 2004. Summary of changes for version 20040816: 6331 63321) ACPI CA Core Subsystem: 6333 6334Designed and implemented support within the AML interpreter for the so- 6335called "implicit return". This support returns the result of the last ASL 6336operation within a control method, in the absence of an explicit Return() 6337operator. A few machines depend on this behavior, even though it is not 6338explicitly supported by the ASL language. It is optional support that can 6339be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag. 6340 6341Removed support for the PCI_Config address space from the internal low level 6342hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This 6343support was not used internally, and would not work correctly anyway because 6344the PCI bus number and segment number were not supported. There are 6345separate interfaces for PCI configuration space access because of the unique 6346interface. 6347 6348Code and Data Size: Current and previous core subsystem library sizes are 6349shown below. These are the code and data sizes for the acpica.lib produced 6350by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6351any ACPI driver or OSPM code. The debug version of the code includes the 6352debug output trace mechanism and has a much larger code and data size. Note 6353that these values will vary depending on the efficiency of the compiler and 6354the compiler options used during generation. 6355 6356 Previous Release: 6357 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 6358 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 6359 Current Release: 6360 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 6361 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 6362 6363 63642) iASL Compiler/Disassembler: 6365 6366Fixed a problem where constants in ASL expressions at the root level (not 6367within a control method) could be inadvertently truncated during code 6368generation. This problem was introduced in the 20040715 release. 6369 6370 6371---------------------------------------- 637215 July 2004. Summary of changes for version 20040715: 6373 63741) ACPI CA Core Subsystem: 6375 6376Restructured the internal HW GPE interfaces to pass/track the current state 6377of interrupts (enabled/disabled) in order to avoid possible deadlock and 6378increase flexibility of the interfaces. 6379 6380Implemented a "lexicographical compare" for String and Buffer objects within 6381the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual -- 6382as per further clarification to the ACPI specification. Behavior is similar 6383to C library "strcmp". 6384 6385Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable 6386external function. In the 32-bit non-debug case, the stack use has been 6387reduced from 168 bytes to 32 bytes. 6388 6389Deployed a new run-time configuration flag, AcpiGbl_EnableInterpreterSlack, 6390whose purpose is to allow the AML interpreter to forgive certain bad AML 6391constructs. Default setting is FALSE. 6392 6393Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field IO 6394support code. If enabled, it allows field access to go beyond the end of a 6395region definition if the field is within the region length rounded up to the 6396next access width boundary (a common coding error.) 6397 6398Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to 6399ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also, these 6400symbols are lowercased by the latest version of the AcpiSrc tool. 6401 6402The prototypes for the PCI interfaces in acpiosxf.h have been updated to 6403rename "Register" to simply "Reg" to prevent certain compilers from 6404complaining. 6405 6406Code and Data Size: Current and previous core subsystem library sizes are 6407shown below. These are the code and data sizes for the acpica.lib produced 6408by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6409any ACPI driver or OSPM code. The debug version of the code includes the 6410debug output trace mechanism and has a much larger code and data size. Note 6411that these values will vary depending on the efficiency of the compiler and 6412the compiler options used during generation. 6413 6414 Previous Release: 6415 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 6416 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 6417 Current Release: 6418 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 6419 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 6420 6421 64222) iASL Compiler/Disassembler: 6423 6424Implemented full support for Package objects within the Case() operator. 6425Note: The Break() operator is currently not supported within Case blocks 6426(TermLists) as there is some question about backward compatibility with ACPI 64271.0 interpreters. 6428 6429 6430Fixed a problem where complex terms were not supported properly within the 6431Switch() operator. 6432 6433Eliminated extraneous warning for compiler-emitted reserved names of the 6434form "_T_x". (Used in Switch/Case operators.) 6435 6436Eliminated optimization messages for "_T_x" objects and small constants 6437within the DefinitionBlock operator. 6438 6439 6440---------------------------------------- 644115 June 2004. Summary of changes for version 20040615: 6442 64431) ACPI CA Core Subsystem: 6444 6445Implemented support for Buffer and String objects (as per ACPI 2.0) for the 6446following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 6447LLessEqual. 6448 6449All directory names in the entire source package are lower case, as they 6450were in earlier releases. 6451 6452Implemented "Disassemble" command in the AML debugger that will disassemble 6453a single control method. 6454 6455Code and Data Size: Current and previous core subsystem library sizes are 6456shown below. These are the code and data sizes for the acpica.lib produced 6457by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6458any ACPI driver or OSPM code. The debug version of the code includes the 6459debug output trace mechanism and has a much larger code and data size. Note 6460that these values will vary depending on the efficiency of the compiler and 6461the compiler options used during generation. 6462 6463 Previous Release: 6464 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 6465 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 6466 6467 Current Release: 6468 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 6469 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 6470 6471 64722) iASL Compiler/Disassembler: 6473 6474Implemented support for Buffer and String objects (as per ACPI 2.0) for the 6475following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 6476LLessEqual. 6477 6478All directory names in the entire source package are lower case, as they 6479were in earlier releases. 6480 6481Fixed a fault when using the -g or -d<nofilename> options if the FADT was 6482not found. 6483 6484Fixed an issue with the Windows version of the compiler where later versions 6485of Windows place the FADT in the registry under the name "FADT" and not 6486"FACP" as earlier versions did. This applies when using the -g or - 6487d<nofilename> options. The compiler now looks for both strings as 6488necessary. 6489 6490Fixed a problem with compiler namepath optimization where a namepath within 6491the Scope() operator could not be optimized if the namepath was a subpath of 6492the current scope path. 6493 6494---------------------------------------- 649527 May 2004. Summary of changes for version 20040527: 6496 64971) ACPI CA Core Subsystem: 6498 6499Completed a new design and implementation for EBDA (Extended BIOS Data Area) 6500support in the RSDP scan code. The original code improperly scanned for the 6501EBDA by simply scanning from memory location 0 to 0x400. The correct method 6502is to first obtain the EBDA pointer from within the BIOS data area, then 6503scan 1K of memory starting at the EBDA pointer. There appear to be few if 6504any machines that place the RSDP in the EBDA, however. 6505 6506Integrated a fix for a possible fault during evaluation of BufferField 6507arguments. Obsolete code that was causing the problem was removed. 6508 6509Found and fixed a problem in the Field Support Code where data could be 6510corrupted on a bit field read that starts on an aligned boundary but does 6511not end on an aligned boundary. Merged the read/write "datum length" 6512calculation code into a common procedure. 6513 6514Rolled in a couple of changes to the FreeBSD-specific header. 6515 6516 6517Code and Data Size: Current and previous core subsystem library sizes are 6518shown below. These are the code and data sizes for the acpica.lib produced 6519by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6520any ACPI driver or OSPM code. The debug version of the code includes the 6521debug output trace mechanism and has a much larger code and data size. Note 6522that these values will vary depending on the efficiency of the compiler and 6523the compiler options used during generation. 6524 6525 Previous Release: 6526 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 6527 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 6528 Current Release: 6529 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 6530 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 6531 6532 65332) iASL Compiler/Disassembler: 6534 6535Fixed a generation warning produced by some overly-verbose compilers for a 653664-bit constant. 6537 6538---------------------------------------- 653914 May 2004. Summary of changes for version 20040514: 6540 65411) ACPI CA Core Subsystem: 6542 6543Fixed a problem where hardware GPE enable bits sometimes not set properly 6544during and after GPE method execution. Result of 04/27 changes. 6545 6546Removed extra "clear all GPEs" when sleeping/waking. 6547 6548Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single 6549AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above to 6550the new AcpiEv* calls as appropriate. 6551 6552ACPI_OS_NAME was removed from the OS-specific headers. The default name is 6553now "Microsoft Windows NT" for maximum compatibility. However this can be 6554changed by modifying the acconfig.h file. 6555 6556Allow a single invocation of AcpiInstallNotifyHandler for a handler that 6557traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag. 6558 6559Run _INI methods on ThermalZone objects. This is against the ACPI 6560specification, but there is apparently ASL code in the field that has these 6561_INI methods, and apparently "other" AML interpreters execute them. 6562 6563Performed a full 16/32/64 bit lint that resulted in some small changes. 6564 6565Added a sleep simulation command to the AML debugger to test sleep code. 6566 6567Code and Data Size: Current and previous core subsystem library sizes are 6568shown below. These are the code and data sizes for the acpica.lib produced 6569by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6570any ACPI driver or OSPM code. The debug version of the code includes the 6571debug output trace mechanism and has a much larger code and data size. Note 6572that these values will vary depending on the efficiency of the compiler and 6573the compiler options used during generation. 6574 6575 Previous Release: 6576 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 6577 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 6578 Current Release: 6579 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 6580 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 6581 6582---------------------------------------- 658327 April 2004. Summary of changes for version 20040427: 6584 65851) ACPI CA Core Subsystem: 6586 6587Completed a major overhaul of the GPE handling within ACPI CA. There are 6588now three types of GPEs: wake-only, runtime-only, and combination wake/run. 6589The only GPEs allowed to be combination wake/run are for button-style 6590devices such as a control-method power button, control-method sleep button, 6591or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are not 6592referenced by any _PRW methods are marked for "runtime" and hardware 6593enabled. Any GPE that is referenced by a _PRW method is marked for "wake" 6594(and disabled at runtime). However, at sleep time, only those GPEs that 6595have been specifically enabled for wake via the AcpiEnableGpe interface will 6596actually be hardware enabled. 6597 6598A new external interface has been added, AcpiSetGpeType(), that is meant to 6599be used by device drivers to force a GPE to a particular type. It will be 6600especially useful for the drivers for the button devices mentioned above. 6601 6602Completed restructuring of the ACPI CA initialization sequence so that 6603default operation region handlers are installed before GPEs are initialized 6604and the _PRW methods are executed. This will prevent errors when the _PRW 6605methods attempt to access system memory or I/O space. 6606 6607GPE enable/disable no longer reads the GPE enable register. We now keep the 6608enable info for runtime and wake separate and in the GPE_EVENT_INFO. We 6609thus no longer depend on the hardware to maintain these bits. 6610 6611Always clear the wake status and fixed/GPE status bits before sleep, even 6612for state S5. 6613 6614Improved the AML debugger output for displaying the GPE blocks and their 6615current status. 6616 6617Added new strings for the _OSI method, of the form "Windows 2001 SPx" where 6618x = 0,1,2,3,4. 6619 6620Fixed a problem where the physical address was incorrectly calculated when 6621the Load() operator was used to directly load from an Operation Region (vs. 6622loading from a Field object.) Also added check for minimum table length for 6623this case. 6624 6625Fix for multiple mutex acquisition. Restore original thread SyncLevel on 6626mutex release. 6627 6628Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for 6629consistency with the other fields returned. 6630 6631Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such 6632structure for each GPE in the system, so the size of this structure is 6633important. 6634 6635CPU stack requirement reduction: Cleaned up the method execution and object 6636evaluation paths so that now a parameter structure is passed, instead of 6637copying the various method parameters over and over again. 6638 6639In evregion.c: Correctly exit and reenter the interpreter region if and 6640only if dispatching an operation region request to a user-installed handler. 6641Do not exit/reenter when dispatching to a default handler (e.g., default 6642system memory or I/O handlers) 6643 6644 6645Notes for updating drivers for the new GPE support. The following changes 6646must be made to ACPI-related device drivers that are attached to one or more 6647GPEs: (This information will be added to the ACPI CA Programmer Reference.) 6648 66491) AcpiInstallGpeHandler no longer automatically enables the GPE, you must 6650explicitly call AcpiEnableGpe. 66512) There is a new interface called AcpiSetGpeType. This should be called 6652before enabling the GPE. Also, this interface will automatically disable 6653the GPE if it is currently enabled. 66543) AcpiEnableGpe no longer supports a GPE type flag. 6655 6656Specific drivers that must be changed: 66571) EC driver: 6658 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED, 6659AeGpeHandler, NULL); 6660 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME); 6661 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR); 6662 66632) Button Drivers (Power, Lid, Sleep): 6664Run _PRW method under parent device 6665If _PRW exists: /* This is a control-method button */ 6666 Extract GPE number and possibly GpeDevice 6667 AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN); 6668 AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR); 6669 6670For all other devices that have _PRWs, we automatically set the GPE type to 6671ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled. This 6672must be done on a selective basis, usually requiring some kind of user app 6673to allow the user to pick the wake devices. 6674 6675 6676Code and Data Size: Current and previous core subsystem library sizes are 6677shown below. These are the code and data sizes for the acpica.lib produced 6678by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6679any ACPI driver or OSPM code. The debug version of the code includes the 6680debug output trace mechanism and has a much larger code and data size. Note 6681that these values will vary depending on the efficiency of the compiler and 6682the compiler options used during generation. 6683 6684 Previous Release: 6685 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 6686 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 6687 Current Release: 6688 6689 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 6690 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 6691 6692 6693 6694---------------------------------------- 669502 April 2004. Summary of changes for version 20040402: 6696 66971) ACPI CA Core Subsystem: 6698 6699Fixed an interpreter problem where an indirect store through an ArgX 6700parameter was incorrectly applying the "implicit conversion rules" during 6701the store. From the ACPI specification: "If the target is a method local or 6702argument (LocalX or ArgX), no conversion is performed and the result is 6703stored directly to the target". The new behavior is to disable implicit 6704conversion during ALL stores to an ArgX. 6705 6706Changed the behavior of the _PRW method scan to ignore any and all errors 6707returned by a given _PRW. This prevents the scan from aborting from the 6708failure of any single _PRW. 6709 6710Moved the runtime configuration parameters from the global init procedure to 6711static variables in acglobal.h. This will allow the host to override the 6712default values easily. 6713 6714Code and Data Size: Current and previous core subsystem library sizes are 6715shown below. These are the code and data sizes for the acpica.lib produced 6716by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6717any ACPI driver or OSPM code. The debug version of the code includes the 6718debug output trace mechanism and has a much larger code and data size. Note 6719that these values will vary depending on the efficiency of the compiler and 6720the compiler options used during generation. 6721 6722 Previous Release: 6723 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 6724 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 6725 Current Release: 6726 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 6727 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 6728 6729 67302) iASL Compiler/Disassembler: 6731 6732iASL now fully disassembles SSDTs. However, External() statements are not 6733generated automatically for unresolved symbols at this time. This is a 6734planned feature for future implementation. 6735 6736Fixed a scoping problem in the disassembler that occurs when the type of the 6737target of a Scope() operator is overridden. This problem caused an 6738incorrectly nested internal namespace to be constructed. 6739 6740Any warnings or errors that are emitted during disassembly are now commented 6741out automatically so that the resulting file can be recompiled without any 6742hand editing. 6743 6744---------------------------------------- 674526 March 2004. Summary of changes for version 20040326: 6746 67471) ACPI CA Core Subsystem: 6748 6749Implemented support for "wake" GPEs via interaction between GPEs and the 6750_PRW methods. Every GPE that is pointed to by one or more _PRWs is 6751identified as a WAKE GPE and by default will no longer be enabled at 6752runtime. Previously, we were blindly enabling all GPEs with a corresponding 6753_Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway. We 6754believe this has been the cause of thousands of "spurious" GPEs on some 6755systems. 6756 6757This new GPE behavior is can be reverted to the original behavior (enable 6758ALL GPEs at runtime) via a runtime flag. 6759 6760Fixed a problem where aliased control methods could not access objects 6761properly. The proper scope within the namespace was not initialized 6762(transferred to the target of the aliased method) before executing the 6763target method. 6764 6765Fixed a potential race condition on internal object deletion on the return 6766object in AcpiEvaluateObject. 6767 6768Integrated a fix for resource descriptors where both _MEM and _MTP were 6769being extracted instead of just _MEM. (i.e. bitmask was incorrectly too 6770wide, 0x0F instead of 0x03.) 6771 6772Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName, preventing a 6773fault in some cases. 6774 6775Updated Notify() values for debug statements in evmisc.c 6776 6777Return proper status from AcpiUtMutexInitialize, not just simply AE_OK. 6778 6779Code and Data Size: Current and previous core subsystem library sizes are 6780shown below. These are the code and data sizes for the acpica.lib produced 6781by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6782any ACPI driver or OSPM code. The debug version of the code includes the 6783debug output trace mechanism and has a much larger code and data size. Note 6784that these values will vary depending on the efficiency of the compiler and 6785the compiler options used during generation. 6786 6787 Previous Release: 6788 6789 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 6790 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 6791 Current Release: 6792 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 6793 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 6794 6795---------------------------------------- 679611 March 2004. Summary of changes for version 20040311: 6797 67981) ACPI CA Core Subsystem: 6799 6800Fixed a problem where errors occurring during the parse phase of control 6801method execution did not abort cleanly. For example, objects created and 6802installed in the namespace were not deleted. This caused all subsequent 6803invocations of the method to return the AE_ALREADY_EXISTS exception. 6804 6805Implemented a mechanism to force a control method to "Serialized" execution 6806if the method attempts to create namespace objects. (The root of the 6807AE_ALREADY_EXISTS problem.) 6808 6809Implemented support for the predefined _OSI "internal" control method. 6810Initial supported strings are "Linux", "Windows 2000", "Windows 2001", and 6811"Windows 2001.1", and can be easily upgraded for new strings as necessary. 6812This feature will allow "other" operating systems to execute the fully 6813tested, "Windows" code path through the ASL code 6814 6815Global Lock Support: Now allows multiple acquires and releases with any 6816internal thread. Removed concept of "owning thread" for this special mutex. 6817 6818Fixed two functions that were inappropriately declaring large objects on the 6819CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage during 6820method execution considerably. 6821 6822Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the 6823S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT. 6824 6825Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs 6826defined on the machine. 6827 6828Implemented two runtime options: One to force all control method execution 6829to "Serialized" to mimic Windows behavior, another to disable _OSI support 6830if it causes problems on a given machine. 6831 6832Code and Data Size: Current and previous core subsystem library sizes are 6833shown below. These are the code and data sizes for the acpica.lib produced 6834by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6835any ACPI driver or OSPM code. The debug version of the code includes the 6836debug output trace mechanism and has a much larger code and data size. Note 6837that these values will vary depending on the efficiency of the compiler and 6838the compiler options used during generation. 6839 6840 Previous Release: 6841 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 6842 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 6843 Current Release: 6844 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 6845 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 6846 68472) iASL Compiler/Disassembler: 6848 6849Fixed an array size problem for FreeBSD that would cause the compiler to 6850fault. 6851 6852---------------------------------------- 685320 February 2004. Summary of changes for version 20040220: 6854 6855 68561) ACPI CA Core Subsystem: 6857 6858Implemented execution of _SxD methods for Device objects in the 6859GetObjectInfo interface. 6860 6861Fixed calls to _SST method to pass the correct arguments. 6862 6863Added a call to _SST on wake to restore to "working" state. 6864 6865Check for End-Of-Buffer failure case in the WalkResources interface. 6866 6867Integrated fix for 64-bit alignment issue in acglobal.h by moving two 6868structures to the beginning of the file. 6869 6870After wake, clear GPE status register(s) before enabling GPEs. 6871 6872After wake, clear/enable power button. (Perhaps we should clear/enable all 6873fixed events upon wake.) 6874 6875Fixed a couple of possible memory leaks in the Namespace manager. 6876 6877Integrated latest acnetbsd.h file. 6878 6879---------------------------------------- 688011 February 2004. Summary of changes for version 20040211: 6881 6882 68831) ACPI CA Core Subsystem: 6884 6885Completed investigation and implementation of the call-by-reference 6886mechanism for control method arguments. 6887 6888Fixed a problem where a store of an object into an indexed package could 6889fail if the store occurs within a different method than the method that 6890created the package. 6891 6892Fixed a problem where the ToDecimal operator could return incorrect results. 6893 6894Fixed a problem where the CopyObject operator could fail on some of the more 6895obscure objects (e.g., Reference objects.) 6896 6897Improved the output of the Debug object to display buffer, package, and 6898index objects. 6899 6900Fixed a problem where constructs of the form "RefOf (ArgX)" did not return 6901the expected result. 6902 6903Added permanent ACPI_REPORT_ERROR macros for all instances of the 6904ACPI_AML_INTERNAL exception. 6905 6906Integrated latest version of acfreebsd.h 6907 6908---------------------------------------- 690916 January 2004. Summary of changes for version 20040116: 6910 6911The purpose of this release is primarily to update the copyright years in 6912each module, thus causing a huge number of diffs. There are a few small 6913functional changes, however. 6914 69151) ACPI CA Core Subsystem: 6916 6917Improved error messages when there is a problem finding one or more of the 6918required base ACPI tables 6919 6920Reintroduced the definition of APIC_HEADER in actbl.h 6921 6922Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h) 6923 6924Removed extraneous reference to NewObj in dsmthdat.c 6925 69262) iASL compiler 6927 6928Fixed a problem introduced in December that disabled the correct disassembly 6929of Resource Templates 6930 6931 6932---------------------------------------- 693303 December 2003. Summary of changes for version 20031203: 6934 69351) ACPI CA Core Subsystem: 6936 6937Changed the initialization of Operation Regions during subsystem 6938init to perform two entire walks of the ACPI namespace; The first 6939to initialize the regions themselves, the second to execute the 6940_REG methods. This fixed some interdependencies across _REG 6941methods found on some machines. 6942 6943Fixed a problem where a Store(Local0, Local1) could simply update 6944the object reference count, and not create a new copy of the 6945object if the Local1 is uninitialized. 6946 6947Implemented support for the _SST reserved method during sleep 6948transitions. 6949 6950Implemented support to clear the SLP_TYP and SLP_EN bits when 6951waking up, this is apparently required by some machines. 6952 6953When sleeping, clear the wake status only if SleepState is not S5. 6954 6955Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect 6956pointer arithmetic advanced a string pointer too far. 6957 6958Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer 6959could be returned if the requested table has not been loaded. 6960 6961Within the support for IRQ resources, restructured the handling of 6962the active and edge/level bits. 6963 6964Fixed a few problems in AcpiPsxExecute() where memory could be 6965leaked under certain error conditions. 6966 6967Improved error messages for the cases where the ACPI mode could 6968not be entered. 6969 6970Code and Data Size: Current and previous core subsystem library 6971sizes are shown below. These are the code and data sizes for the 6972acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 6973these values do not include any ACPI driver or OSPM code. The 6974debug version of the code includes the debug output trace 6975mechanism and has a much larger code and data size. Note that 6976these values will vary depending on the efficiency of the compiler 6977and the compiler options used during generation. 6978 6979 Previous Release (20031029): 6980 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 6981 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 6982 Current Release: 6983 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 6984 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 6985 69862) iASL Compiler/Disassembler: 6987 6988Implemented a fix for the iASL disassembler where a bad index was 6989generated. This was most noticeable on 64-bit platforms 6990 6991 6992---------------------------------------- 699329 October 2003. Summary of changes for version 20031029: 6994 69951) ACPI CA Core Subsystem: 6996 6997 6998Fixed a problem where a level-triggered GPE with an associated 6999_Lxx control method was incorrectly cleared twice. 7000 7001Fixed a problem with the Field support code where an access can 7002occur beyond the end-of-region if the field is non-aligned but 7003extends to the very end of the parent region (resulted in an 7004AE_AML_REGION_LIMIT exception.) 7005 7006Fixed a problem with ACPI Fixed Events where an RT Clock handler 7007would not get invoked on an RTC event. The RTC event bitmasks for 7008the PM1 registers were not being initialized properly. 7009 7010Implemented support for executing _STA and _INI methods for 7011Processor objects. Although this is currently not part of the 7012ACPI specification, there is existing ASL code that depends on the 7013init-time execution of these methods. 7014 7015Implemented and deployed a GetDescriptorName function to decode 7016the various types of internal descriptors. Guards against null 7017descriptors during debug output also. 7018 7019Implemented and deployed a GetNodeName function to extract the 4- 7020character namespace node name. This function simplifies the debug 7021and error output, as well as guarding against null pointers during 7022output. 7023 7024Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to 7025simplify the debug and error output of 64-bit integers. This 7026macro replaces the HIDWORD and LODWORD macros for dumping these 7027integers. 7028 7029Updated the implementation of the Stall() operator to only call 7030AcpiOsStall(), and also return an error if the operand is larger 7031than 255. This preserves the required behavior of not 7032relinquishing the processor, as would happen if AcpiOsSleep() was 7033called for "long stalls". 7034 7035Constructs of the form "Store(LocalX,LocalX)" where LocalX is not 7036initialized are now treated as NOOPs. 7037 7038Cleaned up a handful of warnings during 64-bit generation. 7039 7040Fixed a reported error where and incorrect GPE number was passed 7041to the GPE dispatch handler. This value is only used for error 7042output, however. Used this opportunity to clean up and streamline 7043the GPE dispatch code. 7044 7045Code and Data Size: Current and previous core subsystem library 7046sizes are shown below. These are the code and data sizes for the 7047acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 7048these values do not include any ACPI driver or OSPM code. The 7049 7050debug version of the code includes the debug output trace 7051mechanism and has a much larger code and data size. Note that 7052these values will vary depending on the efficiency of the compiler 7053and the compiler options used during generation. 7054 7055 Previous Release (20031002): 7056 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 7057 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 7058 Current Release: 7059 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 7060 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 7061 7062 70632) iASL Compiler/Disassembler: 7064 7065Updated the iASL compiler to return an error if the operand to the 7066Stall() operator is larger than 255. 7067 7068 7069---------------------------------------- 707002 October 2003. Summary of changes for version 20031002: 7071 7072 70731) ACPI CA Core Subsystem: 7074 7075Fixed a problem with Index Fields where the index was not 7076incremented for fields that require multiple writes to the 7077index/data registers (Fields that are wider than the data 7078register.) 7079 7080Fixed a problem with all Field objects where a write could go 7081beyond the end-of-field if the field was larger than the access 7082granularity and therefore required multiple writes to complete the 7083request. An extra write beyond the end of the field could happen 7084inadvertently. 7085 7086Fixed a problem with Index Fields where a BUFFER_OVERFLOW error 7087would incorrectly be returned if the width of the Data Register 7088was larger than the specified field access width. 7089 7090Completed fixes for LoadTable() and Unload() and verified their 7091operation. Implemented full support for the "DdbHandle" object 7092throughout the ACPI CA subsystem. 7093 7094Implemented full support for the MADT and ECDT tables in the ACPI 7095CA header files. Even though these tables are not directly 7096consumed by ACPI CA, the header definitions are useful for ACPI 7097device drivers. 7098 7099Integrated resource descriptor fixes posted to the Linux ACPI 7100list. This included checks for minimum descriptor length, and 7101support for trailing NULL strings within descriptors that have 7102optional string elements. 7103 7104Code and Data Size: Current and previous core subsystem library 7105sizes are shown below. These are the code and data sizes for the 7106acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 7107these values do not include any ACPI driver or OSPM code. The 7108debug version of the code includes the debug output trace 7109mechanism and has a much larger code and data size. Note that 7110these values will vary depending on the efficiency of the compiler 7111and the compiler options used during generation. 7112 7113 Previous Release (20030918): 7114 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 7115 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 7116 Current Release: 7117 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 7118 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 7119 7120 71212) iASL Compiler: 7122 7123Implemented detection of non-ASCII characters within the input 7124source ASL file. This catches attempts to compile binary (AML) 7125files early in the compile, with an informative error message. 7126 7127Fixed a problem where the disassembler would fault if the output 7128filename could not be generated or if the output file could not be 7129opened. 7130 7131---------------------------------------- 713218 September 2003. Summary of changes for version 20030918: 7133 7134 71351) ACPI CA Core Subsystem: 7136 7137Found and fixed a longstanding problem with the late execution of 7138the various deferred AML opcodes (such as Operation Regions, 7139Buffer Fields, Buffers, and Packages). If the name string 7140specified for the name of the new object placed the object in a 7141scope other than the current scope, the initialization/execution 7142of the opcode failed. The solution to this problem was to 7143implement a mechanism where the late execution of such opcodes 7144does not attempt to lookup/create the name a second time in an 7145incorrect scope. This fixes the "region size computed 7146incorrectly" problem. 7147 7148Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a 7149Global Lock AE_BAD_PARAMETER error. 7150 7151Fixed several 64-bit issues with prototypes, casting and data 7152types. 7153 7154Removed duplicate prototype from acdisasm.h 7155 7156Fixed an issue involving EC Operation Region Detach (Shaohua Li) 7157 7158Code and Data Size: Current and previous core subsystem library 7159sizes are shown below. These are the code and data sizes for the 7160acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 7161these values do not include any ACPI driver or OSPM code. The 7162debug version of the code includes the debug output trace 7163mechanism and has a much larger code and data size. Note that 7164these values will vary depending on the efficiency of the compiler 7165and the compiler options used during generation. 7166 7167 Previous Release: 7168 7169 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 7170 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 7171 Current Release: 7172 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 7173 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 7174 7175 71762) Linux: 7177 7178Fixed the AcpiOsSleep implementation in osunixxf.c to pass the 7179correct sleep time in seconds. 7180 7181---------------------------------------- 718214 July 2003. Summary of changes for version 20030619: 7183 71841) ACPI CA Core Subsystem: 7185 7186Parse SSDTs in order discovered, as opposed to reverse order 7187(Hrvoje Habjanic) 7188 7189Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas 7190Klausner, 7191 Nate Lawson) 7192 7193 71942) Linux: 7195 7196Dynamically allocate SDT list (suggested by Andi Kleen) 7197 7198proc function return value cleanups (Andi Kleen) 7199 7200Correctly handle NMI watchdog during long stalls (Andrew Morton) 7201 7202Make it so acpismp=force works (reported by Andrew Morton) 7203 7204 7205---------------------------------------- 720619 June 2003. Summary of changes for version 20030619: 7207 72081) ACPI CA Core Subsystem: 7209 7210Fix To/FromBCD, eliminating the need for an arch-specific #define. 7211 7212Do not acquire a semaphore in the S5 shutdown path. 7213 7214Fix ex_digits_needed for 0. (Takayoshi Kochi) 7215 7216Fix sleep/stall code reversal. (Andi Kleen) 7217 7218Revert a change having to do with control method calling 7219semantics. 7220 72212) Linux: 7222 7223acpiphp update (Takayoshi Kochi) 7224 7225Export acpi_disabled for sonypi (Stelian Pop) 7226 7227Mention acpismp=force in config help 7228 7229Re-add acpitable.c and acpismp=force. This improves backwards 7230 7231compatibility and also cleans up the code to a significant degree. 7232 7233Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge) 7234 7235---------------------------------------- 723622 May 2003. Summary of changes for version 20030522: 7237 72381) ACPI CA Core Subsystem: 7239 7240Found and fixed a reported problem where an AE_NOT_FOUND error 7241occurred occasionally during _BST evaluation. This turned out to 7242be an Owner ID allocation issue where a called method did not get 7243a new ID assigned to it. Eventually, (after 64k calls), the Owner 7244ID UINT16 would wraparound so that the ID would be the same as the 7245caller's and the called method would delete the caller's 7246namespace. 7247 7248Implemented extended error reporting for control methods that are 7249aborted due to a run-time exception. Output includes the exact 7250AML instruction that caused the method abort, a dump of the method 7251locals and arguments at the time of the abort, and a trace of all 7252nested control method calls. 7253 7254Modified the interpreter to allow the creation of buffers of zero 7255length from the AML code. Implemented new code to ensure that no 7256attempt is made to actually allocate a memory buffer (of length 7257zero) - instead, a simple buffer object with a NULL buffer pointer 7258and length zero is created. A warning is no longer issued when 7259the AML attempts to create a zero-length buffer. 7260 7261Implemented a workaround for the "leading asterisk issue" in 7262_HIDs, _UIDs, and _CIDs in the AML interpreter. One leading 7263asterisk is automatically removed if present in any HID, UID, or 7264CID strings. The iASL compiler will still flag this asterisk as 7265an error, however. 7266 7267Implemented full support for _CID methods that return a package of 7268multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface 7269now additionally returns a device _CID list if present. This 7270required a change to the external interface in order to pass an 7271ACPI_BUFFER object as a parameter since the _CID list is of 7272variable length. 7273 7274Fixed a problem with the new AE_SAME_HANDLER exception where 7275handler initialization code did not know about this exception. 7276 7277Code and Data Size: Current and previous core subsystem library 7278sizes are shown below. These are the code and data sizes for the 7279acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 7280these values do not include any ACPI driver or OSPM code. The 7281debug version of the code includes the debug output trace 7282mechanism and has a much larger code and data size. Note that 7283these values will vary depending on the efficiency of the compiler 7284and the compiler options used during generation. 7285 7286 Previous Release (20030509): 7287 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 7288 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 7289 Current Release: 7290 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 7291 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 7292 7293 72942) Linux: 7295 7296Fixed a bug in which we would reinitialize the ACPI interrupt 7297after it was already working, thus disabling all ACPI and the IRQs 7298for any other device sharing the interrupt. (Thanks to Stian 7299Jordet) 7300 7301Toshiba driver update (John Belmonte) 7302 7303Return only 0 or 1 for our interrupt handler status (Andrew 7304Morton) 7305 7306 73073) iASL Compiler: 7308 7309Fixed a reported problem where multiple (nested) ElseIf() 7310statements were not handled correctly by the compiler, resulting 7311in incorrect warnings and incorrect AML code. This was a problem 7312in both the ASL parser and the code generator. 7313 7314 73154) Documentation: 7316 7317Added changes to existing interfaces, new exception codes, and new 7318text concerning reference count object management versus garbage 7319collection. 7320 7321---------------------------------------- 732209 May 2003. Summary of changes for version 20030509. 7323 7324 73251) ACPI CA Core Subsystem: 7326 7327Changed the subsystem initialization sequence to hold off 7328installation of address space handlers until the hardware has been 7329initialized and the system has entered ACPI mode. This is because 7330the installation of space handlers can cause _REG methods to be 7331run. Previously, the _REG methods could potentially be run before 7332ACPI mode was enabled. 7333 7334Fixed some memory leak issues related to address space handler and 7335notify handler installation. There were some problems with the 7336reference count mechanism caused by the fact that the handler 7337objects are shared across several namespace objects. 7338 7339Fixed a reported problem where reference counts within the 7340namespace were not properly updated when named objects created by 7341method execution were deleted. 7342 7343Fixed a reported problem where multiple SSDTs caused a deletion 7344issue during subsystem termination. Restructured the table data 7345structures to simplify the linked lists and the related code. 7346 7347Fixed a problem where the table ID associated with secondary 7348tables (SSDTs) was not being propagated into the namespace objects 7349created by those tables. This would only present a problem for 7350tables that are unloaded at run-time, however. 7351 7352Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE 7353type as the length parameter (instead of UINT32). 7354 7355Solved a long-standing problem where an ALREADY_EXISTS error 7356appears on various systems. This problem could happen when there 7357are multiple PCI_Config operation regions under a single PCI root 7358bus. This doesn't happen very frequently, but there are some 7359systems that do this in the ASL. 7360 7361Fixed a reported problem where the internal DeleteNode function 7362was incorrectly handling the case where a namespace node was the 7363first in the parent's child list, and had additional peers (not 7364the only child, but first in the list of children.) 7365 7366Code and Data Size: Current core subsystem library sizes are shown 7367below. These are the code and data sizes for the acpica.lib 7368produced by the Microsoft Visual C++ 6.0 compiler, and these 7369values do not include any ACPI driver or OSPM code. The debug 7370version of the code includes the debug output trace mechanism and 7371has a much larger code and data size. Note that these values will 7372vary depending on the efficiency of the compiler and the compiler 7373options used during generation. 7374 7375 Previous Release 7376 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 7377 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 7378 Current Release: 7379 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 7380 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 7381 7382 73832) Linux: 7384 7385Allow ":" in OS override string (Ducrot Bruno) 7386 7387Kobject fix (Greg KH) 7388 7389 73903 iASL Compiler/Disassembler: 7391 7392Fixed a problem in the generation of the C source code files (AML 7393is emitted in C source statements for BIOS inclusion) where the 7394Ascii dump that appears within a C comment at the end of each line 7395could cause a compile time error if the AML sequence happens to 7396have an open comment or close comment sequence embedded. 7397 7398 7399---------------------------------------- 740024 April 2003. Summary of changes for version 20030424. 7401 7402 74031) ACPI CA Core Subsystem: 7404 7405Support for big-endian systems has been implemented. Most of the 7406support has been invisibly added behind big-endian versions of the 7407ACPI_MOVE_* macros. 7408 7409Fixed a problem in AcpiHwDisableGpeBlock() and 7410AcpiHwClearGpeBlock() where an incorrect offset was passed to the 7411low level hardware write routine. The offset parameter was 7412actually eliminated from the low level read/write routines because 7413they had become obsolete. 7414 7415Fixed a problem where a handler object was deleted twice during 7416the removal of a fixed event handler. 7417 7418 74192) Linux: 7420 7421A fix for SMP systems with link devices was contributed by 7422 7423Compaq's Dan Zink. 7424 7425(2.5) Return whether we handled the interrupt in our IRQ handler. 7426(Linux ISRs no longer return void, so we can propagate the handler 7427return value from the ACPI CA core back to the OS.) 7428 7429 7430 74313) Documentation: 7432 7433The ACPI CA Programmer Reference has been updated to reflect new 7434interfaces and changes to existing interfaces. 7435 7436---------------------------------------- 743728 March 2003. Summary of changes for version 20030328. 7438 74391) ACPI CA Core Subsystem: 7440 7441The GPE Block Device support has been completed. New interfaces 7442are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event 7443interfaces (enable, disable, clear, getstatus) have been split 7444into separate interfaces for Fixed Events and General Purpose 7445Events (GPEs) in order to support GPE Block Devices properly. 7446 7447Fixed a problem where the error message "Failed to acquire 7448semaphore" would appear during operations on the embedded 7449controller (EC). 7450 7451Code and Data Size: Current core subsystem library sizes are shown 7452below. These are the code and data sizes for the acpica.lib 7453produced by the Microsoft Visual C++ 6.0 compiler, and these 7454values do not include any ACPI driver or OSPM code. The debug 7455version of the code includes the debug output trace mechanism and 7456has a much larger code and data size. Note that these values will 7457vary depending on the efficiency of the compiler and the compiler 7458options used during generation. 7459 7460 Previous Release 7461 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 7462 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 7463 Current Release: 7464 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 7465 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 7466 7467 7468---------------------------------------- 746928 February 2003. Summary of changes for version 20030228. 7470 7471 74721) ACPI CA Core Subsystem: 7473 7474The GPE handling and dispatch code has been completely overhauled 7475in preparation for support of GPE Block Devices (ID ACPI0006). 7476This affects internal data structures and code only; there should 7477be no differences visible externally. One new file has been 7478added, evgpeblk.c 7479 7480The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only 7481fields that are used to determine the GPE block lengths. The 7482REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address 7483structures are ignored. This is per the ACPI specification but it 7484isn't very clear. The full 256 Block 0/1 GPEs are now supported 7485(the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128). 7486 7487In the SCI interrupt handler, removed the read of the PM1_CONTROL 7488register to look at the SCI_EN bit. On some machines, this read 7489causes an SMI event and greatly slows down SCI events. (This may 7490in fact be the cause of slow battery status response on some 7491systems.) 7492 7493Fixed a problem where a store of a NULL string to a package object 7494could cause the premature deletion of the object. This was seen 7495during execution of the battery _BIF method on some systems, 7496resulting in no battery data being returned. 7497 7498Added AcpiWalkResources interface to simplify parsing of resource 7499lists. 7500 7501Code and Data Size: Current core subsystem library sizes are shown 7502below. These are the code and data sizes for the acpica.lib 7503produced by the Microsoft Visual C++ 6.0 compiler, and these 7504values do not include any ACPI driver or OSPM code. The debug 7505version of the code includes the debug output trace mechanism and 7506has a much larger code and data size. Note that these values will 7507vary depending on the efficiency of the compiler and the compiler 7508options used during generation. 7509 7510 Previous Release 7511 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 7512 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 7513 Current Release: 7514 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 7515 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 7516 7517 75182) Linux 7519 7520S3 fixes (Ole Rohne) 7521 7522Update ACPI PHP driver with to use new acpi_walk_resource API 7523(Bjorn Helgaas) 7524 7525Add S4BIOS support (Pavel Machek) 7526 7527Map in entire table before performing checksum (John Stultz) 7528 7529Expand the mem= cmdline to allow the specification of reserved and 7530ACPI DATA blocks (Pavel Machek) 7531 7532Never use ACPI on VISWS 7533 7534Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez) 7535 7536Revert a change that allowed P_BLK lengths to be 4 or 5. This is 7537causing us to think that some systems support C2 when they really 7538don't. 7539 7540Do not count processor objects for non-present CPUs (Thanks to 7541Dominik Brodowski) 7542 7543 75443) iASL Compiler: 7545 7546Fixed a problem where ASL include files could not be found and 7547opened. 7548 7549Added support for the _PDC reserved name. 7550 7551 7552---------------------------------------- 755322 January 2003. Summary of changes for version 20030122. 7554 7555 75561) ACPI CA Core Subsystem: 7557 7558Added a check for constructs of the form: Store (Local0, Local0) 7559where Local0 is not initialized. Apparently, some BIOS 7560programmers believe that this is a NOOP. Since this store doesn't 7561do anything anyway, the new prototype behavior will ignore this 7562error. This is a case where we can relax the strict checking in 7563the interpreter in the name of compatibility. 7564 7565 75662) Linux 7567 7568The AcpiSrc Source Conversion Utility has been released with the 7569Linux package for the first time. This is the utility that is 7570used to convert the ACPI CA base source code to the Linux version. 7571 7572(Both) Handle P_BLK lengths shorter than 6 more gracefully 7573 7574(Both) Move more headers to include/acpi, and delete an unused 7575header. 7576 7577(Both) Move drivers/acpi/include directory to include/acpi 7578 7579(Both) Boot functions don't use cmdline, so don't pass it around 7580 7581(Both) Remove include of unused header (Adrian Bunk) 7582 7583(Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since 7584the 7585former now also includes the latter, acpiphp.h only needs the one, 7586now. 7587 7588(2.5) Make it possible to select method of bios restoring after S3 7589resume. [=> no more ugly ifdefs] (Pavel Machek) 7590 7591(2.5) Make proc write interfaces work (Pavel Machek) 7592 7593(2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski) 7594 7595(2.5) Break out ACPI Perf code into its own module, under cpufreq 7596(Dominik Brodowski) 7597 7598(2.4) S4BIOS support (Ducrot Bruno) 7599 7600(2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio 7601Visinoni) 7602 7603 76043) iASL Compiler: 7605 7606Added support to disassemble SSDT and PSDTs. 7607 7608Implemented support to obtain SSDTs from the Windows registry if 7609available. 7610 7611 7612---------------------------------------- 761309 January 2003. Summary of changes for version 20030109. 7614 76151) ACPI CA Core Subsystem: 7616 7617Changed the behavior of the internal Buffer-to-String conversion 7618function. The current ACPI specification states that the contents 7619of the buffer are "converted to a string of two-character 7620hexadecimal numbers, each separated by a space". Unfortunately, 7621this definition is not backwards compatible with existing ACPI 1.0 7622implementations (although the behavior was not defined in the ACPI 76231.0 specification). The new behavior simply copies data from the 7624buffer to the string until a null character is found or the end of 7625the buffer is reached. The new String object is always null 7626terminated. This problem was seen during the generation of _BIF 7627battery data where incorrect strings were returned for battery 7628type, etc. This will also require an errata to the ACPI 7629specification. 7630 7631Renamed all instances of NATIVE_UINT and NATIVE_INT to 7632ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively. 7633 7634Copyright in all module headers (both Linux and non-Linux) has be 7635updated to 2003. 7636 7637Code and Data Size: Current core subsystem library sizes are shown 7638below. These are the code and data sizes for the acpica.lib 7639produced by the Microsoft Visual C++ 6.0 compiler, and these 7640values do not include any ACPI driver or OSPM code. The debug 7641version of the code includes the debug output trace mechanism and 7642has a much larger code and data size. Note that these values will 7643vary depending on the efficiency of the compiler and the compiler 7644options used during generation. 7645 7646 Previous Release 7647 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 7648 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 7649 Current Release: 7650 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 7651 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 7652 7653 76542) Linux 7655 7656Fixed an oops on module insertion/removal (Matthew Tippett) 7657 7658(2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante) 7659 7660(2.5) Replace pr_debug (Randy Dunlap) 7661 7662(2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski) 7663 7664(Both) Eliminate spawning of thread from timer callback, in favor 7665of schedule_work() 7666 7667(Both) Show Lid status in /proc (Zdenek OGAR Skalak) 7668 7669(Both) Added define for Fixed Function HW region (Matthew Wilcox) 7670 7671(Both) Add missing statics to button.c (Pavel Machek) 7672 7673Several changes have been made to the source code translation 7674utility that generates the Linux Code in order to make the code 7675more "Linux-like": 7676 7677All typedefs on structs and unions have been removed in keeping 7678with the Linux coding style. 7679 7680Removed the non-Linux SourceSafe module revision number from each 7681module header. 7682 7683Completed major overhaul of symbols to be lowercased for linux. 7684Doubled the number of symbols that are lowercased. 7685 7686Fixed a problem where identifiers within procedure headers and 7687within quotes were not fully lower cased (they were left with a 7688starting capital.) 7689 7690Some C macros whose only purpose is to allow the generation of 16- 7691bit code are now completely removed in the Linux code, increasing 7692readability and maintainability. 7693 7694---------------------------------------- 7695 769612 December 2002. Summary of changes for version 20021212. 7697 7698 76991) ACPI CA Core Subsystem: 7700 7701Fixed a problem where the creation of a zero-length AML Buffer 7702would cause a fault. 7703 7704Fixed a problem where a Buffer object that pointed to a static AML 7705buffer (in an ACPI table) could inadvertently be deleted, causing 7706memory corruption. 7707 7708Fixed a problem where a user buffer (passed in to the external 7709ACPI CA interfaces) could be overwritten if the buffer was too 7710small to complete the operation, causing memory corruption. 7711 7712Fixed a problem in the Buffer-to-String conversion code where a 7713string of length one was always returned, regardless of the size 7714of the input Buffer object. 7715 7716Removed the NATIVE_CHAR data type across the entire source due to 7717lack of need and lack of consistent use. 7718 7719Code and Data Size: Current core subsystem library sizes are shown 7720below. These are the code and data sizes for the acpica.lib 7721produced by the Microsoft Visual C++ 6.0 compiler, and these 7722values do not include any ACPI driver or OSPM code. The debug 7723version of the code includes the debug output trace mechanism and 7724has a much larger code and data size. Note that these values will 7725vary depending on the efficiency of the compiler and the compiler 7726options used during generation. 7727 7728 Previous Release 7729 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 7730 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 7731 Current Release: 7732 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 7733 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 7734 7735 7736---------------------------------------- 773705 December 2002. Summary of changes for version 20021205. 7738 77391) ACPI CA Core Subsystem: 7740 7741Fixed a problem where a store to a String or Buffer object could 7742cause corruption of the DSDT if the object type being stored was 7743the same as the target object type and the length of the object 7744being stored was equal to or smaller than the original (existing) 7745target object. This was seen to cause corruption of battery _BIF 7746buffers if the _BIF method modified the buffer on the fly. 7747 7748Fixed a problem where an internal error was generated if a control 7749method invocation was used in an OperationRegion, Buffer, or 7750Package declaration. This was caused by the deferred parsing of 7751the control method and thus the deferred creation of the internal 7752method object. The solution to this problem was to create the 7753internal method object at the moment the method is encountered in 7754the first pass - so that subsequent references to the method will 7755able to obtain the required parameter count and thus properly 7756parse the method invocation. This problem presented itself as an 7757AE_AML_INTERNAL during the pass 1 parse phase during table load. 7758 7759Fixed a problem where the internal String object copy routine did 7760not always allocate sufficient memory for the target String object 7761and caused memory corruption. This problem was seen to cause 7762"Allocation already present in list!" errors as memory allocation 7763became corrupted. 7764 7765Implemented a new function for the evaluation of namespace objects 7766that allows the specification of the allowable return object 7767types. This simplifies a lot of code that checks for a return 7768object of one or more specific objects returned from the 7769evaluation (such as _STA, etc.) This may become and external 7770function if it would be useful to ACPI-related drivers. 7771 7772Completed another round of prefixing #defines with "ACPI_" for 7773clarity. 7774 7775Completed additional code restructuring to allow more modular 7776linking for iASL compiler and AcpiExec. Several files were split 7777creating new files. New files: nsparse.c dsinit.c evgpe.c 7778 7779Implemented an abort mechanism to terminate an executing control 7780method via the AML debugger. This feature is useful for debugging 7781control methods that depend (wait) for specific hardware 7782responses. 7783 7784Code and Data Size: Current core subsystem library sizes are shown 7785below. These are the code and data sizes for the acpica.lib 7786produced by the Microsoft Visual C++ 6.0 compiler, and these 7787values do not include any ACPI driver or OSPM code. The debug 7788version of the code includes the debug output trace mechanism and 7789has a much larger code and data size. Note that these values will 7790vary depending on the efficiency of the compiler and the compiler 7791options used during generation. 7792 7793 Previous Release 7794 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 7795 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 7796 Current Release: 7797 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 7798 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 7799 7800 78012) iASL Compiler/Disassembler 7802 7803Fixed a compiler code generation problem for "Interrupt" Resource 7804Descriptors. If specified in the ASL, the optional "Resource 7805Source Index" and "Resource Source" fields were not inserted into 7806the correct location within the AML resource descriptor, creating 7807an invalid descriptor. 7808 7809Fixed a disassembler problem for "Interrupt" resource descriptors. 7810The optional "Resource Source Index" and "Resource Source" fields 7811were ignored. 7812 7813 7814---------------------------------------- 781522 November 2002. Summary of changes for version 20021122. 7816 7817 78181) ACPI CA Core Subsystem: 7819 7820Fixed a reported problem where an object stored to a Method Local 7821or Arg was not copied to a new object during the store - the 7822object pointer was simply copied to the Local/Arg. This caused 7823all subsequent operations on the Local/Arg to also affect the 7824original source of the store operation. 7825 7826Fixed a problem where a store operation to a Method Local or Arg 7827was not completed properly if the Local/Arg contained a reference 7828(from RefOf) to a named field. The general-purpose store-to- 7829namespace-node code is now used so that this case is handled 7830automatically. 7831 7832Fixed a problem where the internal object copy routine would cause 7833a protection fault if the object being copied was a Package and 7834contained either 1) a NULL package element or 2) a nested sub- 7835package. 7836 7837Fixed a problem with the GPE initialization that resulted from an 7838ambiguity in the ACPI specification. One section of the 7839specification states that both the address and length of the GPE 7840block must be zero if the block is not supported. Another section 7841implies that only the address need be zero if the block is not 7842supported. The code has been changed so that both the address and 7843the length must be non-zero to indicate a valid GPE block (i.e., 7844if either the address or the length is zero, the GPE block is 7845invalid.) 7846 7847Code and Data Size: Current core subsystem library sizes are shown 7848below. These are the code and data sizes for the acpica.lib 7849produced by the Microsoft Visual C++ 6.0 compiler, and these 7850values do not include any ACPI driver or OSPM code. The debug 7851version of the code includes the debug output trace mechanism and 7852has a much larger code and data size. Note that these values will 7853vary depending on the efficiency of the compiler and the compiler 7854options used during generation. 7855 7856 Previous Release 7857 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 7858 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 7859 Current Release: 7860 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 7861 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 7862 7863 78642) Linux 7865 7866Cleaned up EC driver. Exported an external EC read/write 7867interface. By going through this, other drivers (most notably 7868sonypi) will be able to serialize access to the EC. 7869 7870 78713) iASL Compiler/Disassembler 7872 7873Implemented support to optionally generate include files for both 7874ASM and C (the -i switch). This simplifies BIOS development by 7875automatically creating include files that contain external 7876declarations for the symbols that are created within the 7877 7878(optionally generated) ASM and C AML source files. 7879 7880 7881---------------------------------------- 788215 November 2002. Summary of changes for version 20021115. 7883 78841) ACPI CA Core Subsystem: 7885 7886Fixed a memory leak problem where an error during resolution of 7887 7888method arguments during a method invocation from another method 7889failed to cleanup properly by deleting all successfully resolved 7890argument objects. 7891 7892Fixed a problem where the target of the Index() operator was not 7893correctly constructed if the source object was a package. This 7894problem has not been detected because the use of a target operand 7895with Index() is very rare. 7896 7897Fixed a problem with the Index() operator where an attempt was 7898made to delete the operand objects twice. 7899 7900Fixed a problem where an attempt was made to delete an operand 7901twice during execution of the CondRefOf() operator if the target 7902did not exist. 7903 7904Implemented the first of perhaps several internal create object 7905functions that create and initialize a specific object type. This 7906consolidates duplicated code wherever the object is created, thus 7907shrinking the size of the subsystem. 7908 7909Implemented improved debug/error messages for errors that occur 7910during nested method invocations. All executing method pathnames 7911are displayed (with the error) as the call stack is unwound - thus 7912simplifying debug. 7913 7914Fixed a problem introduced in the 10/02 release that caused 7915premature deletion of a buffer object if a buffer was used as an 7916ASL operand where an integer operand is required (Thus causing an 7917implicit object conversion from Buffer to Integer.) The change in 7918the 10/02 release was attempting to fix a memory leak (albeit 7919incorrectly.) 7920 7921Code and Data Size: Current core subsystem library sizes are shown 7922below. These are the code and data sizes for the acpica.lib 7923produced by the Microsoft Visual C++ 6.0 compiler, and these 7924values do not include any ACPI driver or OSPM code. The debug 7925version of the code includes the debug output trace mechanism and 7926has a much larger code and data size. Note that these values will 7927vary depending on the efficiency of the compiler and the compiler 7928options used during generation. 7929 7930 Previous Release 7931 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 7932 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 7933 Current Release: 7934 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 7935 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 7936 7937 79382) Linux 7939 7940Changed the implementation of the ACPI semaphores to use down() 7941instead of down_interruptable(). It is important that the 7942execution of ACPI control methods not be interrupted by signals. 7943Methods must run to completion, or the system may be left in an 7944unknown/unstable state. 7945 7946Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set. 7947(Shawn Starr) 7948 7949 79503) iASL Compiler/Disassembler 7951 7952 7953Changed the default location of output files. All output files 7954are now placed in the current directory by default instead of in 7955the directory of the source file. This change may affect some 7956existing makefiles, but it brings the behavior of the compiler in 7957line with other similar tools. The location of the output files 7958can be overridden with the -p command line switch. 7959 7960 7961---------------------------------------- 796211 November 2002. Summary of changes for version 20021111. 7963 7964 79650) ACPI Specification 2.0B is released and is now available at: 7966http://www.acpi.info/index.html 7967 7968 79691) ACPI CA Core Subsystem: 7970 7971Implemented support for the ACPI 2.0 SMBus Operation Regions. 7972This includes the early detection and handoff of the request to 7973the SMBus region handler (avoiding all of the complex field 7974support code), and support for the bidirectional return packet 7975from an SMBus write operation. This paves the way for the 7976development of SMBus drivers in each host operating system. 7977 7978Fixed a problem where the semaphore WAIT_FOREVER constant was 7979defined as 32 bits, but must be 16 bits according to the ACPI 7980specification. This had the side effect of causing ASL 7981Mutex/Event timeouts even though the ASL code requested a wait 7982forever. Changed all internal references to the ACPI timeout 7983parameter to 16 bits to prevent future problems. Changed the name 7984of WAIT_FOREVER to ACPI_WAIT_FOREVER. 7985 7986Code and Data Size: Current core subsystem library sizes are shown 7987below. These are the code and data sizes for the acpica.lib 7988produced by the Microsoft Visual C++ 6.0 compiler, and these 7989values do not include any ACPI driver or OSPM code. The debug 7990version of the code includes the debug output trace mechanism and 7991has a much larger code and data size. Note that these values will 7992vary depending on the efficiency of the compiler and the compiler 7993options used during generation. 7994 7995 Previous Release 7996 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 7997 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 7998 Current Release: 7999 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 8000 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 8001 8002 80032) Linux 8004 8005Module loading/unloading fixes (John Cagle) 8006 8007 80083) iASL Compiler/Disassembler 8009 8010Added support for the SMBBlockProcessCall keyword (ACPI 2.0) 8011 8012Implemented support for the disassembly of all SMBus protocol 8013keywords (SMBQuick, SMBWord, etc.) 8014 8015---------------------------------------- 801601 November 2002. Summary of changes for version 20021101. 8017 8018 80191) ACPI CA Core Subsystem: 8020 8021Fixed a problem where platforms that have a GPE1 block but no GPE0 8022block were not handled correctly. This resulted in a "GPE 8023overlap" error message. GPE0 is no longer required. 8024 8025Removed code added in the previous release that inserted nodes 8026into the namespace in alphabetical order. This caused some side- 8027effects on various machines. The root cause of the problem is 8028still under investigation since in theory, the internal ordering 8029of the namespace nodes should not matter. 8030 8031 8032Enhanced error reporting for the case where a named object is not 8033found during control method execution. The full ACPI namepath 8034(name reference) of the object that was not found is displayed in 8035this case. 8036 8037Note: as a result of the overhaul of the namespace object types in 8038the previous release, the namespace nodes for the predefined 8039scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE 8040instead of ACPI_TYPE_ANY. This simplifies the namespace 8041management code but may affect code that walks the namespace tree 8042looking for specific object types. 8043 8044Code and Data Size: Current core subsystem library sizes are shown 8045below. These are the code and data sizes for the acpica.lib 8046produced by the Microsoft Visual C++ 6.0 compiler, and these 8047values do not include any ACPI driver or OSPM code. The debug 8048version of the code includes the debug output trace mechanism and 8049has a much larger code and data size. Note that these values will 8050vary depending on the efficiency of the compiler and the compiler 8051options used during generation. 8052 8053 Previous Release 8054 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 8055 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 8056 Current Release: 8057 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 8058 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 8059 8060 80612) Linux 8062 8063Fixed a problem introduced in the previous release where the 8064Processor and Thermal objects were not recognized and installed in 8065/proc. This was related to the scope type change described above. 8066 8067 80683) iASL Compiler/Disassembler 8069 8070Implemented the -g option to get all of the required ACPI tables 8071from the registry and save them to files (Windows version of the 8072compiler only.) The required tables are the FADT, FACS, and DSDT. 8073 8074Added ACPI table checksum validation during table disassembly in 8075order to catch corrupted tables. 8076 8077 8078---------------------------------------- 807922 October 2002. Summary of changes for version 20021022. 8080 80811) ACPI CA Core Subsystem: 8082 8083Implemented a restriction on the Scope operator that the target 8084must already exist in the namespace at the time the operator is 8085encountered (during table load or method execution). In other 8086words, forward references are not allowed and Scope() cannot 8087create a new object. This changes the previous behavior where the 8088interpreter would create the name if not found. This new behavior 8089correctly enables the search-to-root algorithm during namespace 8090lookup of the target name. Because of this upsearch, this fixes 8091the known Compaq _SB_.OKEC problem and makes both the AML 8092interpreter and iASL compiler compatible with other ACPI 8093implementations. 8094 8095Completed a major overhaul of the internal ACPI object types for 8096the ACPI Namespace and the associated operand objects. Many of 8097these types had become obsolete with the introduction of the two- 8098pass namespace load. This cleanup simplifies the code and makes 8099the entire namespace load mechanism much clearer and easier to 8100understand. 8101 8102Improved debug output for tracking scope opening/closing to help 8103diagnose scoping issues. The old scope name as well as the new 8104scope name are displayed. Also improved error messages for 8105problems with ASL Mutex objects and error messages for GPE 8106problems. 8107 8108Cleaned up the namespace dump code, removed obsolete code. 8109 8110All string output (for all namespace/object dumps) now uses the 8111common ACPI string output procedure which handles escapes properly 8112and does not emit non-printable characters. 8113 8114Fixed some issues with constants in the 64-bit version of the 8115local C library (utclib.c) 8116 8117 81182) Linux 8119 8120EC Driver: No longer attempts to acquire the Global Lock at 8121interrupt level. 8122 8123 81243) iASL Compiler/Disassembler 8125 8126Implemented ACPI 2.0B grammar change that disallows all Type 1 and 81272 opcodes outside of a control method. This means that the 8128"executable" operators (versus the "namespace" operators) cannot 8129be used at the table level; they can only be used within a control 8130method. 8131 8132Implemented the restriction on the Scope() operator where the 8133target must already exist in the namespace at the time the 8134operator is encountered (during ASL compilation). In other words, 8135forward references are not allowed and Scope() cannot create a new 8136object. This makes the iASL compiler compatible with other ACPI 8137implementations and makes the Scope() implementation adhere to the 8138ACPI specification. 8139 8140Fixed a problem where namepath optimization for the Alias operator 8141was optimizing the wrong path (of the two namepaths.) This caused 8142a "Missing alias link" error message. 8143 8144Fixed a problem where an "unknown reserved name" warning could be 8145incorrectly generated for names like "_SB" when the trailing 8146underscore is not used in the original ASL. 8147 8148Fixed a problem where the reserved name check did not handle 8149NamePaths with multiple NameSegs correctly. The first nameseg of 8150the NamePath was examined instead of the last NameSeg. 8151 8152 8153---------------------------------------- 8154 815502 October 2002. Summary of changes for this release. 8156 8157 81581) ACPI CA Core Subsystem version 20021002: 8159 8160Fixed a problem where a store/copy of a string to an existing 8161string did not always set the string length properly in the String 8162object. 8163 8164Fixed a reported problem with the ToString operator where the 8165behavior was identical to the ToHexString operator instead of just 8166simply converting a raw buffer to a string data type. 8167 8168Fixed a problem where CopyObject and the other "explicit" 8169conversion operators were not updating the internal namespace node 8170type as part of the store operation. 8171 8172Fixed a memory leak during implicit source operand conversion 8173where the original object was not deleted if it was converted to a 8174new object of a different type. 8175 8176Enhanced error messages for all problems associated with namespace 8177lookups. Common procedure generates and prints the lookup name as 8178well as the formatted status. 8179 8180Completed implementation of a new design for the Alias support 8181within the namespace. The existing design did not handle the case 8182where a new object was assigned to one of the two names due to the 8183use of an explicit conversion operator, resulting in the two names 8184pointing to two different objects. The new design simply points 8185the Alias name to the original name node - not to the object. 8186This results in a level of indirection that must be handled in the 8187name resolution mechanism. 8188 8189Code and Data Size: Current core subsystem library sizes are shown 8190below. These are the code and data sizes for the acpica.lib 8191produced by the Microsoft Visual C++ 6.0 compiler, and these 8192values do not include any ACPI driver or OSPM code. The debug 8193version of the code includes the debug output trace mechanism and 8194has a larger code and data size. Note that these values will vary 8195depending on the efficiency of the compiler and the compiler 8196options used during generation. 8197 8198 Previous Release 8199 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 8200 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 8201 Current Release: 8202 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 8203 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 8204 8205 82062) Linux 8207 8208Initialize thermal driver's timer before it is used. (Knut 8209Neumann) 8210 8211Allow handling negative celsius values. (Kochi Takayoshi) 8212 8213Fix thermal management and make trip points. R/W (Pavel Machek) 8214 8215Fix /proc/acpi/sleep. (P. Christeas) 8216 8217IA64 fixes. (David Mosberger) 8218 8219Fix reversed logic in blacklist code. (Sergio Monteiro Basto) 8220 8221Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik 8222Brodowski) 8223 8224 82253) iASL Compiler/Disassembler 8226 8227Clarified some warning/error messages. 8228 8229 8230---------------------------------------- 823118 September 2002. Summary of changes for this release. 8232 8233 82341) ACPI CA Core Subsystem version 20020918: 8235 8236Fixed a reported problem with reference chaining (via the Index() 8237and RefOf() operators) in the ObjectType() and SizeOf() operators. 8238The definition of these operators includes the dereferencing of 8239all chained references to return information on the base object. 8240 8241Fixed a problem with stores to indexed package elements - the 8242existing code would not complete the store if an "implicit 8243conversion" was not performed. In other words, if the existing 8244object (package element) was to be replaced completely, the code 8245didn't handle this case. 8246 8247Relaxed typechecking on the ASL "Scope" operator to allow the 8248target name to refer to an object of type Integer, String, or 8249Buffer, in addition to the scoping object types (Device, 8250predefined Scopes, Processor, PowerResource, and ThermalZone.) 8251This allows existing AML code that has workarounds for a bug in 8252Windows to function properly. A warning is issued, however. This 8253affects both the AML interpreter and the iASL compiler. Below is 8254an example of this type of ASL code: 8255 8256 Name(DEB,0x00) 8257 Scope(DEB) 8258 { 8259 8260Fixed some reported problems with 64-bit integer support in the 8261local implementation of C library functions (clib.c) 8262 8263 82642) Linux 8265 8266Use ACPI fix map region instead of IOAPIC region, since it is 8267undefined in non-SMP. 8268 8269Ensure that the SCI has the proper polarity and trigger, even on 8270systems that do not have an interrupt override entry in the MADT. 8271 82722.5 big driver reorganization (Pat Mochel) 8273 8274Use early table mapping code from acpitable.c (Andi Kleen) 8275 8276New blacklist entries (Andi Kleen) 8277 8278Blacklist improvements. Split blacklist code out into a separate 8279file. Move checking the blacklist to very early. Previously, we 8280would use ACPI tables, and then halfway through init, check the 8281blacklist -- too late. Now, it's early enough to completely fall- 8282back to non-ACPI. 8283 8284 82853) iASL Compiler/Disassembler version 20020918: 8286 8287Fixed a problem where the typechecking code didn't know that an 8288alias could point to a method. In other words, aliases were not 8289being dereferenced during typechecking. 8290 8291 8292---------------------------------------- 829329 August 2002. Summary of changes for this release. 8294 82951) ACPI CA Core Subsystem Version 20020829: 8296 8297If the target of a Scope() operator already exists, it must be an 8298object type that actually opens a scope -- such as a Device, 8299Method, Scope, etc. This is a fatal runtime error. Similar error 8300check has been added to the iASL compiler also. 8301 8302Tightened up the namespace load to disallow multiple names in the 8303same scope. This previously was allowed if both objects were of 8304the same type. (i.e., a lookup was the same as entering a new 8305name). 8306 8307 83082) Linux 8309 8310Ensure that the ACPI interrupt has the proper trigger and 8311polarity. 8312 8313local_irq_disable is extraneous. (Matthew Wilcox) 8314 8315Make "acpi=off" actually do what it says, and not use the ACPI 8316interpreter *or* the tables. 8317 8318Added arch-neutral support for parsing SLIT and SRAT tables (Kochi 8319Takayoshi) 8320 8321 83223) iASL Compiler/Disassembler Version 20020829: 8323 8324Implemented namepath optimization for name declarations. For 8325example, a declaration like "Method (\_SB_.ABCD)" would get 8326optimized to "Method (ABCD)" if the declaration is within the 8327\_SB_ scope. This optimization is in addition to the named 8328reference path optimization first released in the previous 8329version. This would seem to complete all possible optimizations 8330for namepaths within the ASL/AML. 8331 8332If the target of a Scope() operator already exists, it must be an 8333object type that actually opens a scope -- such as a Device, 8334Method, Scope, etc. 8335 8336Implemented a check and warning for unreachable code in the same 8337block below a Return() statement. 8338 8339Fixed a problem where the listing file was not generated if the 8340compiler aborted if the maximum error count was exceeded (200). 8341 8342Fixed a problem where the typechecking of method return values was 8343broken. This includes the check for a return value when the 8344method is invoked as a TermArg (a return value is expected.) 8345 8346Fixed a reported problem where EOF conditions during a quoted 8347string or comment caused a fault. 8348 8349 8350---------------------------------------- 835115 August 2002. Summary of changes for this release. 8352 83531) ACPI CA Core Subsystem Version 20020815: 8354 8355Fixed a reported problem where a Store to a method argument that 8356contains a reference did not perform the indirect store correctly. 8357This problem was created during the conversion to the new 8358reference object model - the indirect store to a method argument 8359code was not updated to reflect the new model. 8360 8361Reworked the ACPI mode change code to better conform to ACPI 2.0, 8362handle corner cases, and improve code legibility (Kochi Takayoshi) 8363 8364Fixed a problem with the pathname parsing for the carat (^) 8365prefix. The heavy use of the carat operator by the new namepath 8366optimization in the iASL compiler uncovered a problem with the AML 8367interpreter handling of this prefix. In the case where one or 8368more carats precede a single nameseg, the nameseg was treated as 8369standalone and the search rule (to root) was inadvertently 8370applied. This could cause both the iASL compiler and the 8371interpreter to find the wrong object or to miss the error that 8372should occur if the object does not exist at that exact pathname. 8373 8374Found and fixed the problem where the HP Pavilion DSDT would not 8375load. This was a relatively minor tweak to the table loading code 8376(a problem caused by the unexpected encounter with a method 8377invocation not within a control method), but it does not solve the 8378overall issue of the execution of AML code at the table level. 8379This investigation is still ongoing. 8380 8381Code and Data Size: Current core subsystem library sizes are shown 8382below. These are the code and data sizes for the acpica.lib 8383produced by the Microsoft Visual C++ 6.0 compiler, and these 8384values do not include any ACPI driver or OSPM code. The debug 8385version of the code includes the debug output trace mechanism and 8386has a larger code and data size. Note that these values will vary 8387depending on the efficiency of the compiler and the compiler 8388options used during generation. 8389 8390 Previous Release 8391 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 8392 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 8393 Current Release: 8394 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 8395 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 8396 8397 83982) Linux 8399 8400Remove redundant slab.h include (Brad Hards) 8401 8402Fix several bugs in thermal.c (Herbert Nachtnebel) 8403 8404Make CONFIG_ACPI_BOOT work properly (Pavel Machek) 8405 8406Change acpi_system_suspend to use updated irq functions (Pavel 8407Machek) 8408 8409Export acpi_get_firmware_table (Matthew Wilcox) 8410 8411Use proper root proc entry for ACPI (Kochi Takayoshi) 8412 8413Fix early-boot table parsing (Bjorn Helgaas) 8414 8415 84163) iASL Compiler/Disassembler 8417 8418Reworked the compiler options to make them more consistent and to 8419use two-letter options where appropriate. We were running out of 8420sensible letters. This may break some makefiles, so check the 8421current options list by invoking the compiler with no parameters. 8422 8423Completed the design and implementation of the ASL namepath 8424optimization option for the compiler. This option optimizes all 8425references to named objects to the shortest possible path. The 8426first attempt tries to utilize a single nameseg (4 characters) and 8427the "search-to-root" algorithm used by the interpreter. If that 8428cannot be used (because either the name is not in the search path 8429or there is a conflict with another object with the same name), 8430the pathname is optimized using the carat prefix (usually a 8431shorter string than specifying the entire path from the root.) 8432 8433Implemented support to obtain the DSDT from the Windows registry 8434(when the disassembly option is specified with no input file). 8435Added this code as the implementation for AcpiOsTableOverride in 8436the Windows OSL. Migrated the 16-bit code (used in the AcpiDump 8437utility) to scan memory for the DSDT to the AcpiOsTableOverride 8438function in the DOS OSL to make the disassembler truly OS 8439independent. 8440 8441Implemented a new option to disassemble and compile in one step. 8442When used without an input filename, this option will grab the 8443DSDT from the local machine, disassemble it, and compile it in one 8444step. 8445 8446Added a warning message for invalid escapes (a backslash followed 8447by any character other than the allowable escapes). This catches 8448the quoted string error "\_SB_" (which should be "\\_SB_" ). 8449 8450Also, there are numerous instances in the ACPI specification where 8451this error occurs. 8452 8453Added a compiler option to disable all optimizations. This is 8454basically the "compatibility mode" because by using this option, 8455the AML code will come out exactly the same as other ASL 8456compilers. 8457 8458Added error messages for incorrectly ordered dependent resource 8459functions. This includes: missing EndDependentFn macro at end of 8460dependent resource list, nested dependent function macros (both 8461start and end), and missing StartDependentFn macro. These are 8462common errors that should be caught at compile time. 8463 8464Implemented _OSI support for the disassembler and compiler. _OSI 8465must be included in the namespace for proper disassembly (because 8466the disassembler must know the number of arguments.) 8467 8468Added an "optimization" message type that is optional (off by 8469default). This message is used for all optimizations - including 8470constant folding, integer optimization, and namepath optimization. 8471 8472---------------------------------------- 847325 July 2002. Summary of changes for this release. 8474 8475 84761) ACPI CA Core Subsystem Version 20020725: 8477 8478The AML Disassembler has been enhanced to produce compilable ASL 8479code and has been integrated into the iASL compiler (see below) as 8480well as the single-step disassembly for the AML debugger and the 8481disassembler for the AcpiDump utility. All ACPI 2.0A opcodes, 8482resource templates and macros are fully supported. The 8483disassembler has been tested on over 30 different AML files, 8484producing identical AML when the resulting disassembled ASL file 8485is recompiled with the same ASL compiler. 8486 8487Modified the Resource Manager to allow zero interrupts and zero 8488dma channels during the GetCurrentResources call. This was 8489causing problems on some platforms. 8490 8491Added the AcpiOsRedirectOutput interface to the OSL to simplify 8492output redirection for the AcpiOsPrintf and AcpiOsVprintf 8493interfaces. 8494 8495Code and Data Size: Current core subsystem library sizes are shown 8496below. These are the code and data sizes for the acpica.lib 8497produced by the Microsoft Visual C++ 6.0 compiler, and these 8498values do not include any ACPI driver or OSPM code. The debug 8499version of the code includes the debug output trace mechanism and 8500has a larger code and data size. Note that these values will vary 8501depending on the efficiency of the compiler and the compiler 8502options used during generation. 8503 8504 Previous Release 8505 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 8506 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 8507 Current Release: 8508 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 8509 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 8510 8511 85122) Linux 8513 8514Fixed a panic in the EC driver (Dominik Brodowski) 8515 8516Implemented checksum of the R/XSDT itself during Linux table scan 8517(Richard Schaal) 8518 8519 85203) iASL compiler 8521 8522The AML disassembler is integrated into the compiler. The "-d" 8523option invokes the disassembler to completely disassemble an 8524input AML file, producing as output a text ASL file with the 8525extension ".dsl" (to avoid name collisions with existing .asl 8526source files.) A future enhancement will allow the disassembler 8527to obtain the BIOS DSDT from the registry under Windows. 8528 8529Fixed a problem with the VendorShort and VendorLong resource 8530descriptors where an invalid AML sequence was created. 8531 8532Implemented a fix for BufferData term in the ASL parser. It was 8533inadvertently defined twice, allowing invalid syntax to pass and 8534causing reduction conflicts. 8535 8536Fixed a problem where the Ones opcode could get converted to a 8537value of zero if "Ones" was used where a byte, word or dword value 8538was expected. The 64-bit value is now truncated to the correct 8539size with the correct value. 8540 8541 8542 8543---------------------------------------- 854402 July 2002. Summary of changes for this release. 8545 8546 85471) ACPI CA Core Subsystem Version 20020702: 8548 8549The Table Manager code has been restructured to add several new 8550features. Tables that are not required by the core subsystem 8551(other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer 8552validated in any way and are returned from AcpiGetFirmwareTable if 8553requested. The AcpiOsTableOverride interface is now called for 8554each table that is loaded by the subsystem in order to allow the 8555host to override any table it chooses. Previously, only the DSDT 8556could be overridden. Added one new files, tbrsdt.c and 8557tbgetall.c. 8558 8559Fixed a problem with the conversion of internal package objects to 8560external objects (when a package is returned from a control 8561method.) The return buffer length was set to zero instead of the 8562proper length of the package object. 8563 8564Fixed a reported problem with the use of the RefOf and DeRefOf 8565operators when passing reference arguments to control methods. A 8566new type of Reference object is used internally for references 8567produced by the RefOf operator. 8568 8569Added additional error messages in the Resource Manager to explain 8570AE_BAD_DATA errors when they occur during resource parsing. 8571 8572Split the AcpiEnableSubsystem into two primitives to enable a 8573finer granularity initialization sequence. These two calls should 8574be called in this order: AcpiEnableSubsystem (flags), 8575AcpiInitializeObjects (flags). The flags parameter remains the 8576same. 8577 8578 85792) Linux 8580 8581Updated the ACPI utilities module to understand the new style of 8582fully resolved package objects that are now returned from the core 8583subsystem. This eliminates errors of the form: 8584 8585 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT] 8586 acpi_utils-0430 [145] acpi_evaluate_reference: 8587 Invalid element in package (not a device reference) 8588 8589The method evaluation utility uses the new buffer allocation 8590scheme instead of calling AcpiEvaluate Object twice. 8591 8592Added support for ECDT. This allows the use of the Embedded 8593 8594Controller before the namespace has been fully initialized, which 8595is necessary for ACPI 2.0 support, and for some laptops to 8596initialize properly. (Laptops using ECDT are still rare, so only 8597limited testing was performed of the added functionality.) 8598 8599Fixed memory leaks in the EC driver. 8600 8601Eliminated a brittle code structure in acpi_bus_init(). 8602 8603Eliminated the acpi_evaluate() helper function in utils.c. It is 8604no longer needed since acpi_evaluate_object can optionally 8605allocate memory for the return object. 8606 8607Implemented fix for keyboard hang when getting battery readings on 8608some systems (Stephen White) 8609 8610PCI IRQ routing update (Dominik Brodowski) 8611 8612Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC 8613support 8614 8615---------------------------------------- 861611 June 2002. Summary of changes for this release. 8617 8618 86191) ACPI CA Core Subsystem Version 20020611: 8620 8621Fixed a reported problem where constants such as Zero and One 8622appearing within _PRT packages were not handled correctly within 8623the resource manager code. Originally reported against the ASL 8624compiler because the code generator now optimizes integers to 8625their minimal AML representation (i.e. AML constants if possible.) 8626The _PRT code now handles all AML constant opcodes correctly 8627(Zero, One, Ones, Revision). 8628 8629Fixed a problem with the Concatenate operator in the AML 8630interpreter where a buffer result object was incorrectly marked as 8631not fully evaluated, causing a run-time error of AE_AML_INTERNAL. 8632 8633All package sub-objects are now fully resolved before they are 8634returned from the external ACPI interfaces. This means that name 8635strings are resolved to object handles, and constant operators 8636(Zero, One, Ones, Revision) are resolved to Integers. 8637 8638Implemented immediate resolution of the AML Constant opcodes 8639(Zero, One, Ones, Revision) to Integer objects upon detection 8640within the AML stream. This has simplified and reduced the 8641generated code size of the subsystem by eliminating about 10 8642switch statements for these constants (which previously were 8643contained in Reference objects.) The complicating issues are that 8644the Zero opcode is used as a "placeholder" for unspecified 8645optional target operands and stores to constants are defined to be 8646no-ops. 8647 8648Code and Data Size: Current core subsystem library sizes are shown 8649below. These are the code and data sizes for the acpica.lib 8650produced by the Microsoft Visual C++ 6.0 compiler, and these 8651values do not include any ACPI driver or OSPM code. The debug 8652version of the code includes the debug output trace mechanism and 8653has a larger code and data size. Note that these values will vary 8654depending on the efficiency of the compiler and the compiler 8655options used during generation. 8656 8657 Previous Release 8658 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 8659 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 8660 Current Release: 8661 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 8662 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 8663 8664 86652) Linux 8666 8667 8668Added preliminary support for obtaining _TRA data for PCI root 8669bridges (Bjorn Helgaas). 8670 8671 86723) iASL Compiler Version X2046: 8673 8674Fixed a problem where the "_DDN" reserved name was defined to be a 8675control method with one argument. There are no arguments, and 8676_DDN does not have to be a control method. 8677 8678Fixed a problem with the Linux version of the compiler where the 8679source lines printed with error messages were the wrong lines. 8680This turned out to be the "LF versus CR/LF" difference between 8681Windows and Unix. This appears to be the longstanding issue 8682concerning listing output and error messages. 8683 8684Fixed a problem with the Linux version of compiler where opcode 8685names within error messages were wrong. This was caused by a 8686slight difference in the output of the Flex tool on Linux versus 8687Windows. 8688 8689Fixed a problem with the Linux compiler where the hex output files 8690contained some garbage data caused by an internal buffer overrun. 8691 8692 8693---------------------------------------- 869417 May 2002. Summary of changes for this release. 8695 8696 86971) ACPI CA Core Subsystem Version 20020517: 8698 8699Implemented a workaround to an BIOS bug discovered on the HP 8700OmniBook where the FADT revision number and the table size are 8701inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new 8702behavior is to fallback to using only the ACPI 1.0 fields of the 8703FADT if the table is too small to be a ACPI 2.0 table as claimed 8704by the revision number. Although this is a BIOS bug, this is a 8705case where the workaround is simple enough and with no side 8706effects, so it seemed prudent to add it. A warning message is 8707issued, however. 8708 8709Implemented minimum size checks for the fixed-length ACPI tables - 8710- the FADT and FACS, as well as consistency checks between the 8711revision number and the table size. 8712 8713Fixed a reported problem in the table override support where the 8714new table pointer was incorrectly treated as a physical address 8715instead of a logical address. 8716 8717Eliminated the use of the AE_AML_ERROR exception and replaced it 8718with more descriptive codes. 8719 8720Fixed a problem where an exception would occur if an ASL Field was 8721defined with no named Field Units underneath it (used by some 8722index fields). 8723 8724Code and Data Size: Current core subsystem library sizes are shown 8725below. These are the code and data sizes for the acpica.lib 8726produced by the Microsoft Visual C++ 6.0 compiler, and these 8727values do not include any ACPI driver or OSPM code. The debug 8728version of the code includes the debug output trace mechanism and 8729has a larger code and data size. Note that these values will vary 8730depending on the efficiency of the compiler and the compiler 8731options used during generation. 8732 8733 Previous Release 8734 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 8735 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 8736 Current Release: 8737 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 8738 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 8739 8740 8741 87422) Linux 8743 8744Much work done on ACPI init (MADT and PCI IRQ routing support). 8745(Paul D. and Dominik Brodowski) 8746 8747Fix PCI IRQ-related panic on boot (Sam Revitch) 8748 8749Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno) 8750 8751Fix "MHz" typo (Dominik Brodowski) 8752 8753Fix RTC year 2000 issue (Dominik Brodowski) 8754 8755Preclude multiple button proc entries (Eric Brunet) 8756 8757Moved arch-specific code out of include/platform/aclinux.h 8758 87593) iASL Compiler Version X2044: 8760 8761Implemented error checking for the string used in the EISAID macro 8762(Usually used in the definition of the _HID object.) The code now 8763strictly enforces the PnP format - exactly 7 characters, 3 8764uppercase letters and 4 hex digits. 8765 8766If a raw string is used in the definition of the _HID object 8767(instead of the EISAID macro), the string must contain all 8768alphanumeric characters (e.g., "*PNP0011" is not allowed because 8769of the asterisk.) 8770 8771Implemented checking for invalid use of ACPI reserved names for 8772most of the name creation operators (Name, Device, Event, Mutex, 8773OperationRegion, PowerResource, Processor, and ThermalZone.) 8774Previously, this check was only performed for control methods. 8775 8776Implemented an additional check on the Name operator to emit an 8777error if a reserved name that must be implemented in ASL as a 8778control method is used. We know that a reserved name must be a 8779method if it is defined with input arguments. 8780 8781The warning emitted when a namespace object reference is not found 8782during the cross reference phase has been changed into an error. 8783The "External" directive should be used for names defined in other 8784modules. 8785 8786 87874) Tools and Utilities 8788 8789The 16-bit tools (adump16 and aexec16) have been regenerated and 8790tested. 8791 8792Fixed a problem with the output of both acpidump and adump16 where 8793the indentation of closing parentheses and brackets was not 8794 8795aligned properly with the parent block. 8796 8797 8798---------------------------------------- 879903 May 2002. Summary of changes for this release. 8800 8801 88021) ACPI CA Core Subsystem Version 20020503: 8803 8804Added support a new OSL interface that allows the host operating 8805 8806system software to override the DSDT found in the firmware - 8807AcpiOsTableOverride. With this interface, the OSL can examine the 8808version of the firmware DSDT and replace it with a different one 8809if desired. 8810 8811Added new external interfaces for accessing ACPI registers from 8812device drivers and other system software - AcpiGetRegister and 8813AcpiSetRegister. This was simply an externalization of the 8814existing AcpiHwBitRegister interfaces. 8815 8816Fixed a regression introduced in the previous build where the 8817ASL/AML CreateField operator always returned an error, 8818"destination must be a NS Node". 8819 8820Extended the maximum time (before failure) to successfully enable 8821ACPI mode to 3 seconds. 8822 8823Code and Data Size: Current core subsystem library sizes are shown 8824below. These are the code and data sizes for the acpica.lib 8825produced by the Microsoft Visual C++ 6.0 compiler, and these 8826values do not include any ACPI driver or OSPM code. The debug 8827version of the code includes the debug output trace mechanism and 8828has a larger code and data size. Note that these values will vary 8829depending on the efficiency of the compiler and the compiler 8830options used during generation. 8831 8832 Previous Release 8833 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 8834 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 8835 Current Release: 8836 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 8837 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 8838 8839 88402) Linux 8841 8842Enhanced ACPI init code for SMP. We are now fully MPS and $PIR- 8843free. While 3 out of 4 of our in-house systems work fine, the last 8844one still hangs when testing the LAPIC timer. 8845 8846Renamed many files in 2.5 kernel release to omit "acpi_" from the 8847name. 8848 8849Added warning on boot for Presario 711FR. 8850 8851Sleep improvements (Pavel Machek) 8852 8853ACPI can now be built without CONFIG_PCI enabled. 8854 8855IA64: Fixed memory map functions (JI Lee) 8856 8857 88583) iASL Compiler Version X2043: 8859 8860Added support to allow the compiler to be integrated into the MS 8861VC++ development environment for one-button compilation of single 8862files or entire projects -- with error-to-source-line mapping. 8863 8864Implemented support for compile-time constant folding for the 8865Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0 8866specification. This allows the ASL writer to use expressions 8867instead of Integer/Buffer/String constants in terms that must 8868evaluate to constants at compile time and will also simplify the 8869emitted AML in any such sub-expressions that can be folded 8870(evaluated at compile-time.) This increases the size of the 8871compiler significantly because a portion of the ACPI CA AML 8872interpreter is included within the compiler in order to pre- 8873evaluate constant expressions. 8874 8875 8876Fixed a problem with the "Unicode" ASL macro that caused the 8877compiler to fault. (This macro is used in conjunction with the 8878_STR reserved name.) 8879 8880Implemented an AML opcode optimization to use the Zero, One, and 8881Ones opcodes where possible to further reduce the size of integer 8882constants and thus reduce the overall size of the generated AML 8883code. 8884 8885Implemented error checking for new reserved terms for ACPI version 88862.0A. 8887 8888Implemented the -qr option to display the current list of ACPI 8889reserved names known to the compiler. 8890 8891Implemented the -qc option to display the current list of ASL 8892operators that are allowed within constant expressions and can 8893therefore be folded at compile time if the operands are constants. 8894 8895 88964) Documentation 8897 8898Updated the Programmer's Reference for new interfaces, data types, 8899and memory allocation model options. 8900 8901Updated the iASL Compiler User Reference to apply new format and 8902add information about new features and options. 8903 8904---------------------------------------- 890519 April 2002. Summary of changes for this release. 8906 89071) ACPI CA Core Subsystem Version 20020419: 8908 8909The source code base for the Core Subsystem has been completely 8910cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit 8911versions. The Lint option files used are included in the 8912/acpi/generate/lint directory. 8913 8914Implemented enhanced status/error checking across the entire 8915Hardware manager subsystem. Any hardware errors (reported from 8916the OSL) are now bubbled up and will abort a running control 8917method. 8918 8919 8920Fixed a problem where the per-ACPI-table integer width (32 or 64) 8921was stored only with control method nodes, causing a fault when 8922non-control method code was executed during table loading. The 8923solution implemented uses a global variable to indicate table 8924width across the entire ACPI subsystem. Therefore, ACPI CA does 8925not support mixed integer widths across different ACPI tables 8926(DSDT, SSDT). 8927 8928Fixed a problem where NULL extended fields (X fields) in an ACPI 89292.0 ACPI FADT caused the table load to fail. Although the 8930existing ACPI specification is a bit fuzzy on this topic, the new 8931behavior is to fall back on a ACPI 1.0 field if the corresponding 8932ACPI 2.0 X field is zero (even though the table revision indicates 8933a full ACPI 2.0 table.) The ACPI specification will be updated to 8934clarify this issue. 8935 8936Fixed a problem with the SystemMemory operation region handler 8937where memory was always accessed byte-wise even if the AML- 8938specified access width was larger than a byte. This caused 8939problems on systems with memory-mapped I/O. Memory is now 8940accessed with the width specified. On systems that do not support 8941non-aligned transfers, a check is made to guarantee proper address 8942alignment before proceeding in order to avoid an AML-caused 8943alignment fault within the kernel. 8944 8945 8946Fixed a problem with the ExtendedIrq resource where only one byte 8947of the 4-byte Irq field was extracted. 8948 8949Fixed the AcpiExDigitsNeeded() procedure to support _UID. This 8950function was out of date and required a rewrite. 8951 8952Code and Data Size: Current core subsystem library sizes are shown 8953below. These are the code and data sizes for the acpica.lib 8954produced by the Microsoft Visual C++ 6.0 compiler, and these 8955values do not include any ACPI driver or OSPM code. The debug 8956version of the code includes the debug output trace mechanism and 8957has a larger code and data size. Note that these values will vary 8958depending on the efficiency of the compiler and the compiler 8959options used during generation. 8960 8961 Previous Release 8962 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 8963 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 8964 Current Release: 8965 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 8966 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 8967 8968 89692) Linux 8970 8971PCI IRQ routing fixes (Dominik Brodowski) 8972 8973 89743) iASL Compiler Version X2042: 8975 8976Implemented an additional compile-time error check for a field 8977unit whose size + minimum access width would cause a run-time 8978access beyond the end-of-region. Previously, only the field size 8979itself was checked. 8980 8981The Core subsystem and iASL compiler now share a common parse 8982object in preparation for compile-time evaluation of the type 89833/4/5 ASL operators. 8984 8985 8986---------------------------------------- 8987Summary of changes for this release: 03_29_02 8988 89891) ACPI CA Core Subsystem Version 20020329: 8990 8991Implemented support for late evaluation of TermArg operands to 8992Buffer and Package objects. This allows complex expressions to be 8993used in the declarations of these object types. 8994 8995Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI 89961.0, if the field was larger than 32 bits, it was returned as a 8997buffer - otherwise it was returned as an integer. In ACPI 2.0, 8998the field is returned as a buffer only if the field is larger than 899964 bits. The TableRevision is now considered when making this 9000conversion to avoid incompatibility with existing ASL code. 9001 9002Implemented logical addressing for AcpiOsGetRootPointer. This 9003allows an RSDP with either a logical or physical address. With 9004this support, the host OS can now override all ACPI tables with 9005one logical RSDP. Includes implementation of "typed" pointer 9006support to allow a common data type for both physical and logical 9007pointers internally. This required a change to the 9008AcpiOsGetRootPointer interface. 9009 9010Implemented the use of ACPI 2.0 Generic Address Structures for all 9011GPE, Fixed Event, and PM Timer I/O. This allows the use of memory 9012mapped I/O for these ACPI features. 9013 9014Initialization now ignores not only non-required tables (All 9015tables other than the FADT, FACS, DSDT, and SSDTs), but also does 9016not validate the table headers of unrecognized tables. 9017 9018Fixed a problem where a notify handler could only be 9019installed/removed on an object of type Device. All "notify" 9020 9021objects are now supported -- Devices, Processor, Power, and 9022Thermal. 9023 9024Removed most verbosity from the ACPI_DB_INFO debug level. Only 9025critical information is returned when this debug level is enabled. 9026 9027Code and Data Size: Current core subsystem library sizes are shown 9028below. These are the code and data sizes for the acpica.lib 9029produced by the Microsoft Visual C++ 6.0 compiler, and these 9030values do not include any ACPI driver or OSPM code. The debug 9031version of the code includes the debug output trace mechanism and 9032has a larger code and data size. Note that these values will vary 9033depending on the efficiency of the compiler and the compiler 9034options used during generation. 9035 9036 Previous Release 9037 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 9038 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 9039 Current Release: 9040 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 9041 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 9042 9043 90442) Linux: 9045 9046The processor driver (acpi_processor.c) now fully supports ACPI 90472.0-based processor performance control (e.g. Intel(R) 9048SpeedStep(TM) technology) Note that older laptops that only have 9049the Intel "applet" interface are not supported through this. The 9050'limit' and 'performance' interface (/proc) are fully functional. 9051[Note that basic policy for controlling performance state 9052transitions will be included in the next version of ospmd.] The 9053idle handler was modified to more aggressively use C2, and PIIX4 9054errata handling underwent a complete overhaul (big thanks to 9055Dominik Brodowski). 9056 9057Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR- 9058based devices in the ACPI namespace are now dynamically bound 9059(associated) with their PCI counterparts (e.g. PCI1->01:00.0). 9060This allows, among other things, ACPI to resolve bus numbers for 9061subordinate PCI bridges. 9062 9063Enhanced PCI IRQ routing to get the proper bus number for _PRT 9064entries defined underneath PCI bridges. 9065 9066Added IBM 600E to bad bios list due to invalid _ADR value for 9067PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing. 9068 9069In the process of adding full MADT support (e.g. IOAPIC) for IA32 9070(acpi.c, mpparse.c) -- stay tuned. 9071 9072Added back visual differentiation between fixed-feature and 9073control-method buttons in dmesg. Buttons are also subtyped (e.g. 9074button/power/PWRF) to simplify button identification. 9075 9076We no longer use -Wno-unused when compiling debug. Please ignore 9077any "_THIS_MODULE defined but not used" messages. 9078 9079Can now shut down the system using "magic sysrq" key. 9080 9081 90823) iASL Compiler version 2041: 9083 9084Fixed a problem where conversion errors for hex/octal/decimal 9085constants were not reported. 9086 9087Implemented a fix for the General Register template Address field. 9088This field was 8 bits when it should be 64. 9089 9090Fixed a problem where errors/warnings were no longer being emitted 9091within the listing output file. 9092 9093Implemented the ACPI 2.0A restriction on ACPI Table Signatures to 9094exactly 4 characters, alphanumeric only. 9095 9096 9097 9098 9099---------------------------------------- 9100Summary of changes for this release: 03_08_02 9101 9102 91031) ACPI CA Core Subsystem Version 20020308: 9104 9105Fixed a problem with AML Fields where the use of the "AccessAny" 9106keyword could cause an interpreter error due to attempting to read 9107or write beyond the end of the parent Operation Region. 9108 9109Fixed a problem in the SystemMemory Operation Region handler where 9110an attempt was made to map memory beyond the end of the region. 9111This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY" 9112errors on some Linux systems. 9113 9114Fixed a problem where the interpreter/namespace "search to root" 9115algorithm was not functioning for some object types. Relaxed the 9116internal restriction on the search to allow upsearches for all 9117external object types as well as most internal types. 9118 9119 91202) Linux: 9121 9122We now use safe_halt() macro versus individual calls to sti | hlt. 9123 9124Writing to the processor limit interface should now work. "echo 1" 9125will increase the limit, 2 will decrease, and 0 will reset to the 9126 9127default. 9128 9129 91303) ASL compiler: 9131 9132Fixed segfault on Linux version. 9133 9134 9135---------------------------------------- 9136Summary of changes for this release: 02_25_02 9137 91381) ACPI CA Core Subsystem: 9139 9140 9141Fixed a problem where the GPE bit masks were not initialized 9142properly, causing erratic GPE behavior. 9143 9144Implemented limited support for multiple calling conventions. The 9145code can be generated with either the VPL (variable parameter 9146list, or "C") convention, or the FPL (fixed parameter list, or 9147"Pascal") convention. The core subsystem is about 3.4% smaller 9148when generated with FPL. 9149 9150 91512) Linux 9152 9153Re-add some /proc/acpi/event functionality that was lost during 9154the rewrite 9155 9156Resolved issue with /proc events for fixed-feature buttons showing 9157up as the system device. 9158 9159Fixed checks on C2/C3 latencies to be inclusive of maximum values. 9160 9161Replaced AE_ERRORs in acpi_osl.c with more specific error codes. 9162 9163Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi" 9164 9165Fixed limit interface & usage to fix bugs with passive cooling 9166hysterisis. 9167 9168Restructured PRT support. 9169 9170 9171---------------------------------------- 9172Summary of changes for this label: 02_14_02 9173 9174 91751) ACPI CA Core Subsystem: 9176 9177Implemented support in AcpiLoadTable to allow loading of FACS and 9178FADT tables. 9179 9180Suport for the now-obsolete interim 0.71 64-bit ACPI tables has 9181been removed. All 64-bit platforms should be migrated to the ACPI 91822.0 tables. The actbl71.h header has been removed from the source 9183tree. 9184 9185All C macros defined within the subsystem have been prefixed with 9186"ACPI_" to avoid collision with other system include files. 9187 9188Removed the return value for the two AcpiOsPrint interfaces, since 9189it is never used and causes lint warnings for ignoring the return 9190value. 9191 9192Added error checking to all internal mutex acquire and release 9193calls. Although a failure from one of these interfaces is 9194probably a fatal system error, these checks will cause the 9195immediate abort of the currently executing method or interface. 9196 9197Fixed a problem where the AcpiSetCurrentResources interface could 9198fault. This was a side effect of the deployment of the new memory 9199allocation model. 9200 9201Fixed a couple of problems with the Global Lock support introduced 9202in the last major build. The "common" (1.0/2.0) internal FACS was 9203being overwritten with the FACS signature and clobbering the 9204Global Lock pointer. Also, the actual firmware FACS was being 9205unmapped after construction of the "common" FACS, preventing 9206access to the actual Global Lock field within it. The "common" 9207internal FACS is no longer installed as an actual ACPI table; it 9208is used simply as a global. 9209 9210Code and Data Size: Current core subsystem library sizes are shown 9211below. These are the code and data sizes for the acpica.lib 9212produced by the Microsoft Visual C++ 6.0 compiler, and these 9213values do not include any ACPI driver or OSPM code. The debug 9214version of the code includes the debug output trace mechanism and 9215has a larger code and data size. Note that these values will vary 9216depending on the efficiency of the compiler and the compiler 9217options used during generation. 9218 9219 Previous Release (02_07_01) 9220 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 9221 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 9222 Current Release: 9223 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 9224 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 9225 9226 92272) Linux 9228 9229Updated Linux-specific code for core macro and OSL interface 9230changes described above. 9231 9232Improved /proc/acpi/event. It now can be opened only once and has 9233proper poll functionality. 9234 9235Fixed and restructured power management (acpi_bus). 9236 9237Only create /proc "view by type" when devices of that class exist. 9238 9239Fixed "charging/discharging" bug (and others) in acpi_battery. 9240 9241Improved thermal zone code. 9242 9243 92443) ASL Compiler, version X2039: 9245 9246 9247Implemented the new compiler restriction on ASL String hex/octal 9248escapes to non-null, ASCII values. An error results if an invalid 9249value is used. (This will require an ACPI 2.0 specification 9250change.) 9251 9252AML object labels that are output to the optional C and ASM source 9253are now prefixed with both the ACPI table signature and table ID 9254to help guarantee uniqueness within a large BIOS project. 9255 9256 9257---------------------------------------- 9258Summary of changes for this label: 02_01_02 9259 92601) ACPI CA Core Subsystem: 9261 9262ACPI 2.0 support is complete in the entire Core Subsystem and the 9263ASL compiler. All new ACPI 2.0 operators are implemented and all 9264other changes for ACPI 2.0 support are complete. With 9265simultaneous code and data optimizations throughout the subsystem, 9266ACPI 2.0 support has been implemented with almost no additional 9267cost in terms of code and data size. 9268 9269Implemented a new mechanism for allocation of return buffers. If 9270the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will 9271be allocated on behalf of the caller. Consolidated all return 9272buffer validation and allocation to a common procedure. Return 9273buffers will be allocated via the primary OSL allocation interface 9274since it appears that a separate pool is not needed by most users. 9275If a separate pool is required for these buffers, the caller can 9276still use the original mechanism and pre-allocate the buffer(s). 9277 9278Implemented support for string operands within the DerefOf 9279operator. 9280 9281Restructured the Hardware and Event managers to be table driven, 9282simplifying the source code and reducing the amount of generated 9283code. 9284 9285Split the common read/write low-level ACPI register bitfield 9286procedure into a separate read and write, simplifying the code 9287considerably. 9288 9289Obsoleted the AcpiOsCallocate OSL interface. This interface was 9290used only a handful of times and didn't have enough critical mass 9291for a separate interface. Replaced with a common calloc procedure 9292in the core. 9293 9294Fixed a reported problem with the GPE number mapping mechanism 9295that allows GPE1 numbers to be non-contiguous with GPE0. 9296Reorganized the GPE information and shrunk a large array that was 9297originally large enough to hold info for all possible GPEs (256) 9298to simply large enough to hold all GPEs up to the largest GPE 9299number on the machine. 9300 9301Fixed a reported problem with resource structure alignment on 64- 9302bit platforms. 9303 9304Changed the AcpiEnableEvent and AcpiDisableEvent external 9305interfaces to not require any flags for the common case of 9306enabling/disabling a GPE. 9307 9308Implemented support to allow a "Notify" on a Processor object. 9309 9310Most TBDs in comments within the source code have been resolved 9311and eliminated. 9312 9313 9314Fixed a problem in the interpreter where a standalone parent 9315prefix (^) was not handled correctly in the interpreter and 9316debugger. 9317 9318Removed obsolete and unnecessary GPE save/restore code. 9319 9320Implemented Field support in the ASL Load operator. This allows a 9321table to be loaded from a named field, in addition to loading a 9322table directly from an Operation Region. 9323 9324Implemented timeout and handle support in the external Global Lock 9325interfaces. 9326 9327Fixed a problem in the AcpiDump utility where pathnames were no 9328longer being generated correctly during the dump of named objects. 9329 9330Modified the AML debugger to give a full display of if/while 9331predicates instead of just one AML opcode at a time. (The 9332predicate can have several nested ASL statements.) The old method 9333was confusing during single stepping. 9334 9335Code and Data Size: Current core subsystem library sizes are shown 9336below. These are the code and data sizes for the acpica.lib 9337produced by the Microsoft Visual C++ 6.0 compiler, and these 9338values do not include any ACPI driver or OSPM code. The debug 9339version of the code includes the debug output trace mechanism and 9340has a larger code and data size. Note that these values will vary 9341depending on the efficiency of the compiler and the compiler 9342options used during generation. 9343 9344 Previous Release (12_18_01) 9345 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 9346 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 9347 Current Release: 9348 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 9349 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 9350 93512) Linux 9352 9353 Implemented fix for PIIX reverse throttling errata (Processor 9354driver) 9355 9356Added new Limit interface (Processor and Thermal drivers) 9357 9358New thermal policy (Thermal driver) 9359 9360Many updates to /proc 9361 9362Battery "low" event support (Battery driver) 9363 9364Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers) 9365 9366IA32 - IA64 initialization unification, no longer experimental 9367 9368Menuconfig options redesigned 9369 93703) ASL Compiler, version X2037: 9371 9372Implemented several new output features to simplify integration of 9373AML code into firmware: 1) Output the AML in C source code with 9374labels for each named ASL object. The original ASL source code 9375is interleaved as C comments. 2) Output the AML in ASM source code 9376with labels and interleaved ASL source. 3) Output the AML in 9377raw hex table form, in either C or ASM. 9378 9379Implemented support for optional string parameters to the 9380LoadTable operator. 9381 9382Completed support for embedded escape sequences within string 9383literals. The compiler now supports all single character escapes 9384as well as the Octal and Hex escapes. Note: the insertion of a 9385null byte into a string literal (via the hex/octal escape) causes 9386the string to be immediately terminated. A warning is issued. 9387 9388Fixed a problem where incorrect AML was generated for the case 9389where an ASL namepath consists of a single parent prefix ( 9390 9391) with no trailing name segments. 9392 9393The compiler has been successfully generated with a 64-bit C 9394compiler. 9395 9396 9397 9398 9399---------------------------------------- 9400Summary of changes for this label: 12_18_01 9401 94021) Linux 9403 9404Enhanced blacklist with reason and severity fields. Any table's 9405signature may now be used to identify a blacklisted system. 9406 9407Call _PIC control method to inform the firmware which interrupt 9408model the OS is using. Turn on any disabled link devices. 9409 9410Cleaned up busmgr /proc error handling (Andreas Dilger) 9411 9412 2) ACPI CA Core Subsystem: 9413 9414Implemented ACPI 2.0 semantics for the "Break" operator (Exit from 9415while loop) 9416 9417Completed implementation of the ACPI 2.0 "Continue", 9418"ConcatenateResTemplate", "DataTableRegion", and "LoadTable" 9419operators. All new ACPI 2.0 operators are now implemented in both 9420the ASL compiler and the AML interpreter. The only remaining ACPI 94212.0 task is support for the String data type in the DerefOf 9422operator. Fixed a problem with AcquireMutex where the status code 9423was lost if the caller had to actually wait for the mutex. 9424 9425Increased the maximum ASL Field size from 64K bits to 4G bits. 9426 9427Completed implementation of the external Global Lock interfaces -- 9428AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and 9429Handler parameters were added. 9430 9431Completed another pass at removing warnings and issues when 9432compiling with 64-bit compilers. The code now compiles cleanly 9433with the Intel 64-bit C/C++ compiler. Most notably, the pointer 9434add and subtract (diff) macros have changed considerably. 9435 9436 9437Created and deployed a new ACPI_SIZE type that is 64-bits wide on 943864-bit platforms, 32-bits on all others. This type is used 9439wherever memory allocation and/or the C sizeof() operator is used, 9440and affects the OSL memory allocation interfaces AcpiOsAllocate 9441and AcpiOsCallocate. 9442 9443Implemented sticky user breakpoints in the AML debugger. 9444 9445Code and Data Size: Current core subsystem library sizes are shown 9446below. These are the code and data sizes for the acpica.lib 9447produced by the Microsoft Visual C++ 6.0 compiler, and these 9448values do not include any ACPI driver or OSPM code. The debug 9449version of the code includes the debug output trace mechanism and 9450has a larger code and data size. Note that these values will vary 9451depending on the efficiency of the compiler and the compiler 9452options used during generation. 9453 9454 Previous Release (12_05_01) 9455 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 9456 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 9457 Current Release: 9458 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 9459 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 9460 9461 3) ASL Compiler, version X2034: 9462 9463Now checks for (and generates an error if detected) the use of a 9464Break or Continue statement without an enclosing While statement. 9465 9466 9467Successfully generated the compiler with the Intel 64-bit C 9468compiler. 9469 9470 ---------------------------------------- 9471Summary of changes for this label: 12_05_01 9472 9473 1) ACPI CA Core Subsystem: 9474 9475The ACPI 2.0 CopyObject operator is fully implemented. This 9476operator creates a new copy of an object (and is also used to 9477bypass the "implicit conversion" mechanism of the Store operator.) 9478 9479The ACPI 2.0 semantics for the SizeOf operator are fully 9480implemented. The change is that performing a SizeOf on a 9481reference object causes an automatic dereference of the object to 9482tha actual value before the size is evaluated. This behavior was 9483undefined in ACPI 1.0. 9484 9485The ACPI 2.0 semantics for the Extended IRQ resource descriptor 9486have been implemented. The interrupt polarity and mode are now 9487independently set. 9488 9489Fixed a problem where ASL Constants (Zero, One, Ones, Revision) 9490appearing in Package objects were not properly converted to 9491integers when the internal Package was converted to an external 9492object (via the AcpiEvaluateObject interface.) 9493 9494Fixed a problem with the namespace object deletion mechanism for 9495objects created by control methods. There were two parts to this 9496problem: 1) Objects created during the initialization phase method 9497parse were not being deleted, and 2) The object owner ID mechanism 9498to track objects was broken. 9499 9500Fixed a problem where the use of the ASL Scope operator within a 9501control method would result in an invalid opcode exception. 9502 9503Fixed a problem introduced in the previous label where the buffer 9504length required for the _PRT structure was not being returned 9505correctly. 9506 9507Code and Data Size: Current core subsystem library sizes are shown 9508below. These are the code and data sizes for the acpica.lib 9509produced by the Microsoft Visual C++ 6.0 compiler, and these 9510values do not include any ACPI driver or OSPM code. The debug 9511version of the code includes the debug output trace mechanism and 9512has a larger code and data size. Note that these values will vary 9513depending on the efficiency of the compiler and the compiler 9514options used during generation. 9515 9516 Previous Release (11_20_01) 9517 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 9518 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 9519 9520 Current Release: 9521 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 9522 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 9523 9524 2) Linux: 9525 9526Updated all files to apply cleanly against 2.4.16. 9527 9528Added basic PCI Interrupt Routing Table (PRT) support for IA32 9529(acpi_pci.c), and unified the PRT code for IA32 and IA64. This 9530version supports both static and dyanmic PRT entries, but dynamic 9531entries are treated as if they were static (not yet 9532reconfigurable). Architecture- specific code to use this data is 9533absent on IA32 but should be available shortly. 9534 9535Changed the initialization sequence to start the ACPI interpreter 9536(acpi_init) prior to initialization of the PCI driver (pci_init) 9537in init/main.c. This ordering is required to support PRT and 9538facilitate other (future) enhancement. A side effect is that the 9539ACPI bus driver and certain device drivers can no longer be loaded 9540as modules. 9541 9542Modified the 'make menuconfig' options to allow PCI Interrupt 9543Routing support to be included without the ACPI Bus and other 9544device drivers. 9545 9546 3) ASL Compiler, version X2033: 9547 9548Fixed some issues with the use of the new CopyObject and 9549DataTableRegion operators. Both are fully functional. 9550 9551 ---------------------------------------- 9552Summary of changes for this label: 11_20_01 9553 9554 20 November 2001. Summary of changes for this release. 9555 9556 1) ACPI CA Core Subsystem: 9557 9558Updated Index support to match ACPI 2.0 semantics. Storing a 9559Integer, String, or Buffer to an Index of a Buffer will store only 9560the least-significant byte of the source to the Indexed buffer 9561byte. Multiple writes are not performed. 9562 9563Fixed a problem where the access type used in an AccessAs ASL 9564operator was not recorded correctly into the field object. 9565 9566Fixed a problem where ASL Event objects were created in a 9567signalled state. Events are now created in an unsignalled state. 9568 9569The internal object cache is now purged after table loading and 9570initialization to reduce the use of dynamic kernel memory -- on 9571the assumption that object use is greatest during the parse phase 9572of the entire table (versus the run-time use of individual control 9573methods.) 9574 9575ACPI 2.0 variable-length packages are now fully operational. 9576 9577Code and Data Size: Code and Data optimizations have permitted new 9578feature development with an actual reduction in the library size. 9579Current core subsystem library sizes are shown below. These are 9580the code and data sizes for the acpica.lib produced by the 9581Microsoft Visual C++ 6.0 compiler, and these values do not include 9582any ACPI driver or OSPM code. The debug version of the code 9583includes the debug output trace mechanism and has a larger code 9584and data size. Note that these values will vary depending on the 9585efficiency of the compiler and the compiler options used during 9586generation. 9587 9588 Previous Release (11_09_01): 9589 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 9590 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 9591 9592 Current Release: 9593 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 9594 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 9595 9596 2) Linux: 9597 9598Enhanced the ACPI boot-time initialization code to allow the use 9599of Local APIC tables for processor enumeration on IA-32, and to 9600pave the way for a fully MPS-free boot (on SMP systems) in the 9601near future. This functionality replaces 9602arch/i386/kernel/acpitables.c, which was introduced in an earlier 96032.4.15-preX release. To enable this feature you must add 9604"acpi_boot=on" to the kernel command line -- see the help entry 9605for CONFIG_ACPI_BOOT for more information. An IA-64 release is in 9606the works... 9607 9608Restructured the configuration options to allow boot-time table 9609parsing support without inclusion of the ACPI Interpreter (and 9610other) code. 9611 9612NOTE: This release does not include fixes for the reported events, 9613power-down, and thermal passive cooling issues (coming soon). 9614 9615 3) ASL Compiler: 9616 9617Added additional typechecking for Fields within restricted access 9618Operation Regions. All fields within EC and CMOS regions must be 9619declared with ByteAcc. All fields withing SMBus regions must be 9620declared with the BufferAcc access type. 9621 9622Fixed a problem where the listing file output of control methods 9623no longer interleaved the actual AML code with the ASL source 9624code. 9625 9626 9627 9628 9629---------------------------------------- 9630Summary of changes for this label: 11_09_01 9631 96321) ACPI CA Core Subsystem: 9633 9634Implemented ACPI 2.0-defined support for writes to fields with a 9635Buffer, String, or Integer source operand that is smaller than the 9636target field. In these cases, the source operand is zero-extended 9637to fill the target field. 9638 9639Fixed a problem where a Field starting bit offset (within the 9640parent operation region) was calculated incorrectly if the 9641 9642alignment of the field differed from the access width. This 9643affected CreateWordField, CreateDwordField, CreateQwordField, and 9644possibly other fields that use the "AccessAny" keyword. 9645 9646Fixed a problem introduced in the 11_02_01 release where indirect 9647stores through method arguments did not operate correctly. 9648 96492) Linux: 9650 9651Implemented boot-time ACPI table parsing support 9652(CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code 9653facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than 9654legacy BIOS interfaces (e.g. MPS) for the configuration of system 9655processors, memory, and interrupts during setup_arch(). Note that 9656this patch does not include the required architecture-specific 9657changes required to apply this information -- subsequent patches 9658will be posted for both IA32 and IA64 to achieve this. 9659 9660Added low-level sleep support for IA32 platforms, courtesy of Pat 9661Mochel. This allows IA32 systems to transition to/from various 9662sleeping states (e.g. S1, S3), although the lack of a centralized 9663driver model and power-manageable drivers will prevent its 9664(successful) use on most systems. 9665 9666Revamped the ACPI 'menuconfig' layout: created new "ACPI Support" 9667submenu, unified IA32 and IA64 options, added new "Boot using ACPI 9668tables" option, etc. 9669 9670Increased the default timeout for the EC driver from 1ms to 10ms 9671(1000 cycles of 10us) to try to address AE_TIME errors during EC 9672transactions. 9673 9674 ---------------------------------------- 9675Summary of changes for this label: 11_02_01 9676 96771) ACPI CA Core Subsystem: 9678 9679ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access 9680(QWordAcc keyword). All ACPI 2.0 64-bit support is now 9681implemented. 9682 9683OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required 9684changes to support ACPI 2.0 Qword field access. Read/Write 9685PciConfiguration(), Read/Write Memory(), and Read/Write Port() now 9686accept an ACPI_INTEGER (64 bits) as the value parameter. Also, 9687the value parameter for the address space handler interface is now 9688an ACPI_INTEGER. OSL implementations of these interfaces must now 9689handle the case where the Width parameter is 64. 9690 9691Index Fields: Fixed a problem where unaligned bit assembly and 9692disassembly for IndexFields was not supported correctly. 9693 9694Index and Bank Fields: Nested Index and Bank Fields are now 9695supported. During field access, a check is performed to ensure 9696that the value written to an Index or Bank register is not out of 9697the range of the register. The Index (or Bank) register is 9698written before each access to the field data. Future support will 9699include allowing individual IndexFields to be wider than the 9700DataRegister width. 9701 9702Fields: Fixed a problem where the AML interpreter was incorrectly 9703attempting to write beyond the end of a Field/OpRegion. This was 9704a boundary case that occurred when a DWORD field was written to a 9705BYTE access OpRegion, forcing multiple writes and causing the 9706interpreter to write one datum too many. 9707 9708Fields: Fixed a problem with Field/OpRegion access where the 9709starting bit address of a field was incorrectly calculated if the 9710current access type was wider than a byte (WordAcc, DwordAcc, or 9711QwordAcc). 9712 9713Fields: Fixed a problem where forward references to individual 9714FieldUnits (individual Field names within a Field definition) were 9715not resolved during the AML table load. 9716 9717Fields: Fixed a problem where forward references from a Field 9718definition to the parent Operation Region definition were not 9719resolved during the AML table load. 9720 9721Fields: Duplicate FieldUnit names within a scope are now detected 9722during AML table load. 9723 9724Acpi Interfaces: Fixed a problem where the AcpiGetName() interface 9725returned an incorrect name for the root node. 9726 9727Code and Data Size: Code and Data optimizations have permitted new 9728feature development with an actual reduction in the library size. 9729Current core subsystem library sizes are shown below. These are 9730the code and data sizes for the acpica.lib produced by the 9731Microsoft Visual C++ 6.0 compiler, and these values do not include 9732any ACPI driver or OSPM code. The debug version of the code 9733includes the debug output trace mechanism and has a larger code 9734and data size. Note that these values will vary depending on the 9735efficiency of the compiler and the compiler options used during 9736generation. 9737 9738 Previous Release (10_18_01): 9739 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 9740 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 9741 9742 Current Release: 9743 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 9744 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 9745 9746 2) Linux: 9747 9748Improved /proc processor output (Pavel Machek) Re-added 9749MODULE_LICENSE("GPL") to all modules. 9750 9751 3) ASL Compiler version X2030: 9752 9753Duplicate FieldUnit names within a scope are now detected and 9754flagged as errors. 9755 9756 4) Documentation: 9757 9758Programmer Reference updated to reflect OSL and address space 9759handler interface changes described above. 9760 9761---------------------------------------- 9762Summary of changes for this label: 10_18_01 9763 9764ACPI CA Core Subsystem: 9765 9766Fixed a problem with the internal object reference count mechanism 9767that occasionally caused premature object deletion. This resolves 9768all of the outstanding problem reports where an object is deleted 9769in the middle of an interpreter evaluation. Although this problem 9770only showed up in rather obscure cases, the solution to the 9771problem involved an adjustment of all reference counts involving 9772objects attached to namespace nodes. 9773 9774Fixed a problem with Field support in the interpreter where 9775writing to an aligned field whose length is an exact multiple (2 9776or greater) of the field access granularity would cause an attempt 9777to write beyond the end of the field. 9778 9779The top level AML opcode execution functions within the 9780interpreter have been renamed with a more meaningful and 9781consistent naming convention. The modules exmonad.c and 9782exdyadic.c were eliminated. New modules are exoparg1.c, 9783exoparg2.c, exoparg3.c, and exoparg6.c. 9784 9785Support for the ACPI 2.0 "Mid" ASL operator has been implemented. 9786 9787Fixed a problem where the AML debugger was causing some internal 9788objects to not be deleted during subsystem termination. 9789 9790Fixed a problem with the external AcpiEvaluateObject interface 9791where the subsystem would fault if the named object to be 9792evaluated refered to a constant such as Zero, Ones, etc. 9793 9794Fixed a problem with IndexFields and BankFields where the 9795subsystem would fault if the index, data, or bank registers were 9796not defined in the same scope as the field itself. 9797 9798Added printf format string checking for compilers that support 9799this feature. Corrected more than 50 instances of issues with 9800format specifiers within invocations of ACPI_DEBUG_PRINT 9801throughout the core subsystem code. 9802 9803The ASL "Revision" operator now returns the ACPI support level 9804implemented in the core - the value "2" since the ACPI 2.0 support 9805is more than 50% implemented. 9806 9807Enhanced the output of the AML debugger "dump namespace" command 9808to output in a more human-readable form. 9809 9810Current core subsystem library code sizes are shown below. These 9811 9812are the code and data sizes for the acpica.lib produced by the 9813Microsoft Visual C++ 6.0 compiler, and these values do not include 9814any ACPI driver or OSPM code. The debug version of the code 9815includes the full debug trace mechanism -- leading to a much 9816 9817larger code and data size. Note that these values will vary 9818depending on the efficiency of the compiler and the compiler 9819options used during generation. 9820 9821 Previous Label (09_20_01): 9822 Non-Debug Version: 65K Code, 5K Data, 70K Total 9823 Debug Version: 138K Code, 58K Data, 196K Total 9824 9825 This Label: 9826 9827 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 9828 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 9829 9830Linux: 9831 9832Implemented a "Bad BIOS Blacklist" to track machines that have 9833known ASL/AML problems. 9834 9835Enhanced the /proc interface for the thermal zone driver and added 9836support for _HOT (the critical suspend trip point). The 'info' 9837file now includes threshold/policy information, and allows setting 9838of _SCP (cooling preference) and _TZP (polling frequency) values 9839to the 'info' file. Examples: "echo tzp=5 > info" sets the polling 9840frequency to 5 seconds, and "echo scp=1 > info" sets the cooling 9841preference to the passive/quiet mode (if supported by the ASL). 9842 9843Implemented a workaround for a gcc bug that resuted in an OOPs 9844when loading the control method battery driver. 9845 9846 ---------------------------------------- 9847Summary of changes for this label: 09_20_01 9848 9849 ACPI CA Core Subsystem: 9850 9851The AcpiEnableEvent and AcpiDisableEvent interfaces have been 9852modified to allow individual GPE levels to be flagged as wake- 9853enabled (i.e., these GPEs are to remain enabled when the platform 9854sleeps.) 9855 9856The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now 9857support wake-enabled GPEs. This means that upon entering the 9858sleep state, all GPEs that are not wake-enabled are disabled. 9859When leaving the sleep state, these GPEs are reenabled. 9860 9861A local double-precision divide/modulo module has been added to 9862enhance portability to OS kernels where a 64-bit math library is 9863not available. The new module is "utmath.c". 9864 9865Several optimizations have been made to reduce the use of CPU 9866stack. Originally over 2K, the maximum stack usage is now below 98672K at 1860 bytes (1.82k) 9868 9869Fixed a problem with the AcpiGetFirmwareTable interface where the 9870root table pointer was not mapped into a logical address properly. 9871 9872Fixed a problem where a NULL pointer was being dereferenced in the 9873interpreter code for the ASL Notify operator. 9874 9875Fixed a problem where the use of the ASL Revision operator 9876returned an error. This operator now returns the current version 9877of the ACPI CA core subsystem. 9878 9879Fixed a problem where objects passed as control method parameters 9880to AcpiEvaluateObject were always deleted at method termination. 9881However, these objects may end up being stored into the namespace 9882by the called method. The object reference count mechanism was 9883applied to these objects instead of a force delete. 9884 9885Fixed a problem where static strings or buffers (contained in the 9886AML code) that are declared as package elements within the ASL 9887code could cause a fault because the interpreter would attempt to 9888delete them. These objects are now marked with the "static 9889object" flag to prevent any attempt to delete them. 9890 9891Implemented an interpreter optimization to use operands directly 9892from the state object instead of extracting the operands to local 9893variables. This reduces stack use and code size, and improves 9894performance. 9895 9896The module exxface.c was eliminated as it was an unnecessary extra 9897layer of code. 9898 9899Current core subsystem library code sizes are shown below. These 9900are the code and data sizes for the acpica.lib produced by the 9901Microsoft Visual C++ 6.0 compiler, and these values do not include 9902any ACPI driver or OSPM code. The debug version of the code 9903includes the full debug trace mechanism -- leading to a much 9904larger code and data size. Note that these values will vary 9905depending on the efficiency of the compiler and the compiler 9906options used during generation. 9907 9908 Non-Debug Version: 65K Code, 5K Data, 70K Total 9909(Previously 69K) Debug Version: 138K Code, 58K Data, 196K 9910Total (Previously 195K) 9911 9912Linux: 9913 9914Support for ACPI 2.0 64-bit integers has been added. All ACPI 9915Integer objects are now 64 bits wide 9916 9917All Acpi data types and structures are now in lower case. Only 9918Acpi macros are upper case for differentiation. 9919 9920 Documentation: 9921 9922Changes to the external interfaces as described above. 9923 9924 ---------------------------------------- 9925Summary of changes for this label: 08_31_01 9926 9927 ACPI CA Core Subsystem: 9928 9929A bug with interpreter implementation of the ASL Divide operator 9930was found and fixed. The implicit function return value (not the 9931explicit store operands) was returning the remainder instead of 9932the quotient. This was a longstanding bug and it fixes several 9933known outstanding issues on various platforms. 9934 9935The ACPI_DEBUG_PRINT and function trace entry/exit macros have 9936been further optimized for size. There are 700 invocations of the 9937DEBUG_PRINT macro alone, so each optimization reduces the size of 9938the debug version of the subsystem significantly. 9939 9940A stack trace mechanism has been implemented. The maximum stack 9941usage is about 2K on 32-bit platforms. The debugger command "stat 9942stack" will display the current maximum stack usage. 9943 9944All public symbols and global variables within the subsystem are 9945now prefixed with the string "Acpi". This keeps all of the 9946symbols grouped together in a kernel map, and avoids conflicts 9947with other kernel subsystems. 9948 9949Most of the internal fixed lookup tables have been moved into the 9950code segment via the const operator. 9951 9952Several enhancements have been made to the interpreter to both 9953reduce the code size and improve performance. 9954 9955Current core subsystem library code sizes are shown below. These 9956are the code and data sizes for the acpica.lib produced by the 9957Microsoft Visual C++ 6.0 compiler, and these values do not include 9958any ACPI driver or OSPM code. The debug version of the code 9959includes the full debug trace mechanism which contains over 700 9960invocations of the DEBUG_PRINT macro, 500 function entry macro 9961invocations, and over 900 function exit macro invocations -- 9962leading to a much larger code and data size. Note that these 9963values will vary depending on the efficiency of the compiler and 9964the compiler options used during generation. 9965 9966 Non-Debug Version: 64K Code, 5K Data, 69K Total 9967Debug Version: 137K Code, 58K Data, 195K Total 9968 9969 Linux: 9970 9971Implemented wbinvd() macro, pending a kernel-wide definition. 9972 9973Fixed /proc/acpi/event to handle poll() and short reads. 9974 9975 ASL Compiler, version X2026: 9976 9977Fixed a problem introduced in the previous label where the AML 9978 9979code emitted for package objects produced packages with zero 9980length. 9981 9982 ---------------------------------------- 9983Summary of changes for this label: 08_16_01 9984 9985ACPI CA Core Subsystem: 9986 9987The following ACPI 2.0 ASL operators have been implemented in the 9988AML interpreter (These are already supported by the Intel ASL 9989compiler): ToDecimalString, ToHexString, ToString, ToInteger, and 9990ToBuffer. Support for 64-bit AML constants is implemented in the 9991AML parser, debugger, and disassembler. 9992 9993The internal memory tracking mechanism (leak detection code) has 9994been upgraded to reduce the memory overhead (a separate tracking 9995block is no longer allocated for each memory allocation), and now 9996supports all of the internal object caches. 9997 9998The data structures and code for the internal object caches have 9999been coelesced and optimized so that there is a single cache and 10000memory list data structure and a single group of functions that 10001implement generic cache management. This has reduced the code 10002size in both the debug and release versions of the subsystem. 10003 10004The DEBUG_PRINT macro(s) have been optimized for size and replaced 10005by ACPI_DEBUG_PRINT. The syntax for this macro is slightly 10006different, because it generates a single call to an internal 10007function. This results in a savings of about 90 bytes per 10008invocation, resulting in an overall code and data savings of about 1000916% in the debug version of the subsystem. 10010 10011 Linux: 10012 10013Fixed C3 disk corruption problems and re-enabled C3 on supporting 10014machines. 10015 10016Integrated low-level sleep code by Patrick Mochel. 10017 10018Further tweaked source code Linuxization. 10019 10020Other minor fixes. 10021 10022 ASL Compiler: 10023 10024Support for ACPI 2.0 variable length packages is fixed/completed. 10025 10026Fixed a problem where the optional length parameter for the ACPI 100272.0 ToString operator. 10028 10029Fixed multiple extraneous error messages when a syntax error is 10030detected within the declaration line of a control method. 10031 10032 ---------------------------------------- 10033Summary of changes for this label: 07_17_01 10034 10035ACPI CA Core Subsystem: 10036 10037Added a new interface named AcpiGetFirmwareTable to obtain any 10038ACPI table via the ACPI signature. The interface can be called at 10039any time during kernel initialization, even before the kernel 10040virtual memory manager is initialized and paging is enabled. This 10041allows kernel subsystems to obtain ACPI tables very early, even 10042before the ACPI CA subsystem is initialized. 10043 10044Fixed a problem where Fields defined with the AnyAcc attribute 10045could be resolved to the incorrect address under the following 10046conditions: 1) the field width is larger than 8 bits and 2) the 10047parent operation region is not defined on a DWORD boundary. 10048 10049Fixed a problem where the interpreter is not being locked during 10050namespace initialization (during execution of the _INI control 10051methods), causing an error when an attempt is made to release it 10052later. 10053 10054ACPI 2.0 support in the AML Interpreter has begun and will be 10055ongoing throughout the rest of this year. In this label, The Mod 10056operator is implemented. 10057 10058Added a new data type to contain full PCI addresses named 10059ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device, 10060and Function values. 10061 10062 Linux: 10063 10064Enhanced the Linux version of the source code to change most 10065capitalized ACPI type names to lowercase. For example, all 10066instances of ACPI_STATUS are changed to acpi_status. This will 10067result in a large diff, but the change is strictly cosmetic and 10068aligns the CA code closer to the Linux coding standard. 10069 10070OSL Interfaces: 10071 10072The interfaces to the PCI configuration space have been changed to 10073add the PCI Segment number and to split the single 32-bit combined 10074DeviceFunction field into two 16-bit fields. This was 10075accomplished by moving the four values that define an address in 10076PCI configuration space (segment, bus, device, and function) to 10077the new ACPI_PCI_ID structure. 10078 10079The changes to the PCI configuration space interfaces led to a 10080reexamination of the complete set of address space access 10081interfaces for PCI, I/O, and Memory. The previously existing 18 10082interfaces have proven difficult to maintain (any small change 10083must be propagated across at least 6 interfaces) and do not easily 10084allow for future expansion to 64 bits if necessary. Also, on some 10085systems, it would not be appropriate to demultiplex the access 10086width (8, 16, 32,or 64) before calling the OSL if the 10087corresponding native OS interfaces contain a similar access width 10088parameter. For these reasons, the 18 address space interfaces 10089have been replaced by these 6 new ones: 10090 10091AcpiOsReadPciConfiguration 10092AcpiOsWritePciConfiguration 10093AcpiOsReadMemory 10094AcpiOsWriteMemory 10095AcpiOsReadPort 10096AcpiOsWritePort 10097 10098Added a new interface named AcpiOsGetRootPointer to allow the OSL 10099to perform the platform and/or OS-specific actions necessary to 10100obtain the ACPI RSDP table pointer. On IA-32 platforms, this 10101interface will simply call down to the CA core to perform the low- 10102memory search for the table. On IA-64, the RSDP is obtained from 10103EFI. Migrating this interface to the OSL allows the CA core to 10104 10105remain OS and platform independent. 10106 10107Added a new interface named AcpiOsSignal to provide a generic 10108"function code and pointer" interface for various miscellaneous 10109signals and notifications that must be made to the host OS. The 10110first such signals are intended to support the ASL Fatal and 10111Breakpoint operators. In the latter case, the AcpiOsBreakpoint 10112interface has been obsoleted. 10113 10114The definition of the AcpiFormatException interface has been 10115changed to simplify its use. The caller no longer must supply a 10116buffer to the call; A pointer to a const string is now returned 10117directly. This allows the call to be easily used in printf 10118statements, etc. since the caller does not have to manage a local 10119buffer. 10120 10121 10122 ASL Compiler, Version X2025: 10123 10124The ACPI 2.0 Switch/Case/Default operators have been implemented 10125and are fully functional. They will work with all ACPI 1.0 10126interpreters, since the operators are simply translated to If/Else 10127pairs. 10128 10129The ACPI 2.0 ElseIf operator is implemented and will also work 10130with 1.0 interpreters, for the same reason. 10131 10132Implemented support for ACPI 2.0 variable-length packages. These 10133packages have a separate opcode, and their size is determined by 10134the interpreter at run-time. 10135 10136Documentation The ACPI CA Programmer Reference has been updated to 10137reflect the new interfaces and changes to existing interfaces. 10138 10139 ------------------------------------------ 10140Summary of changes for this label: 06_15_01 10141 10142 ACPI CA Core Subsystem: 10143 10144Fixed a problem where a DWORD-accessed field within a Buffer 10145object would get its byte address inadvertently rounded down to 10146the nearest DWORD. Buffers are always Byte-accessible. 10147 10148 ASL Compiler, version X2024: 10149 10150Fixed a problem where the Switch() operator would either fault or 10151hang the compiler. Note however, that the AML code for this ACPI 101522.0 operator is not yet implemented. 10153 10154Compiler uses the new AcpiOsGetTimer interface to obtain compile 10155timings. 10156 10157Implementation of the CreateField operator automatically converts 10158a reference to a named field within a resource descriptor from a 10159byte offset to a bit offset if required. 10160 10161Added some missing named fields from the resource descriptor 10162support. These are the names that are automatically created by the 10163compiler to reference fields within a descriptor. They are only 10164valid at compile time and are not passed through to the AML 10165interpreter. 10166 10167Resource descriptor named fields are now typed as Integers and 10168subject to compile-time typechecking when used in expressions. 10169 10170 ------------------------------------------ 10171Summary of changes for this label: 05_18_01 10172 10173 ACPI CA Core Subsystem: 10174 10175Fixed a couple of problems in the Field support code where bits 10176from adjacent fields could be returned along with the proper field 10177bits. Restructured the field support code to improve performance, 10178readability and maintainability. 10179 10180New DEBUG_PRINTP macro automatically inserts the procedure name 10181into the output, saving hundreds of copies of procedure name 10182strings within the source, shrinking the memory footprint of the 10183debug version of the core subsystem. 10184 10185 Source Code Structure: 10186 10187The source code directory tree was restructured to reflect the 10188current organization of the component architecture. Some files 10189and directories have been moved and/or renamed. 10190 10191 Linux: 10192 10193Fixed leaking kacpidpc processes. 10194 10195Fixed queueing event data even when /proc/acpi/event is not 10196opened. 10197 10198 ASL Compiler, version X2020: 10199 10200Memory allocation performance enhancement - over 24X compile time 10201improvement on large ASL files. Parse nodes and namestring 10202buffers are now allocated from a large internal compiler buffer. 10203 10204The temporary .SRC file is deleted unless the "-s" option is 10205specified 10206 10207The "-d" debug output option now sends all output to the .DBG file 10208instead of the console. 10209 10210"External" second parameter is now optional 10211 10212"ElseIf" syntax now properly allows the predicate 10213 10214Last operand to "Load" now recognized as a Target operand 10215 10216Debug object can now be used anywhere as a normal object. 10217 10218ResourceTemplate now returns an object of type BUFFER 10219 10220EISAID now returns an object of type INTEGER 10221 10222"Index" now works with a STRING operand 10223 10224"LoadTable" now accepts optional parameters 10225 10226"ToString" length parameter is now optional 10227 10228"Interrupt (ResourceType," parse error fixed. 10229 10230"Register" with a user-defined region space parse error fixed 10231 10232Escaped backslash at the end of a string ("\\") scan/parse error 10233fixed 10234 10235"Revision" is now an object of type INTEGER. 10236 10237 10238 10239------------------------------------------ 10240Summary of changes for this label: 05_02_01 10241 10242Linux: 10243 10244/proc/acpi/event now blocks properly. 10245 10246Removed /proc/sys/acpi. You can still dump your DSDT from 10247/proc/acpi/dsdt. 10248 10249 ACPI CA Core Subsystem: 10250 10251Fixed a problem introduced in the previous label where some of the 10252"small" resource descriptor types were not recognized. 10253 10254Improved error messages for the case where an ASL Field is outside 10255the range of the parent operation region. 10256 10257 ASL Compiler, version X2018: 10258 10259 10260Added error detection for ASL Fields that extend beyond the length 10261of the parent operation region (only if the length of the region 10262is known at compile time.) This includes fields that have a 10263minimum access width that is smaller than the parent region, and 10264individual field units that are partially or entirely beyond the 10265extent of the parent. 10266 10267 10268 10269------------------------------------------ 10270Summary of changes for this label: 04_27_01 10271 10272 ACPI CA Core Subsystem: 10273 10274Fixed a problem where the namespace mutex could be released at the 10275wrong time during execution of AcpiRemoveAddressSpaceHandler. 10276 10277Added optional thread ID output for debug traces, to simplify 10278debugging of multiple threads. Added context switch notification 10279when the debug code realizes that a different thread is now 10280executing ACPI code. 10281 10282Some additional external data types have been prefixed with the 10283string "ACPI_" for consistency. This may effect existing code. 10284The data types affected are the external callback typedefs - e.g., 10285 10286WALK_CALLBACK becomes ACPI_WALK_CALLBACK. 10287 10288 Linux: 10289 10290Fixed an issue with the OSL semaphore implementation where a 10291thread was waking up with an error from receiving a SIGCHLD 10292signal. 10293 10294Linux version of ACPI CA now uses the system C library for string 10295manipulation routines instead of a local implementation. 10296 10297Cleaned up comments and removed TBDs. 10298 10299 ASL Compiler, version X2017: 10300 10301Enhanced error detection and reporting for all file I/O 10302operations. 10303 10304 Documentation: 10305 10306Programmer Reference updated to version 1.06. 10307 10308 10309 10310------------------------------------------ 10311Summary of changes for this label: 04_13_01 10312 10313 ACPI CA Core Subsystem: 10314 10315Restructured support for BufferFields and RegionFields. 10316BankFields support is now fully operational. All known 32-bit 10317limitations on field sizes have been removed. Both BufferFields 10318and (Operation) RegionFields are now supported by the same field 10319management code. 10320 10321Resource support now supports QWORD address and IO resources. The 1032216/32/64 bit address structures and the Extended IRQ structure 10323have been changed to properly handle Source Resource strings. 10324 10325A ThreadId of -1 is now used to indicate a "mutex not acquired" 10326condition internally and must never be returned by AcpiOsThreadId. 10327This reserved value was changed from 0 since Unix systems allow a 10328thread ID of 0. 10329 10330Linux: 10331 10332Driver code reorganized to enhance portability 10333 10334Added a kernel configuration option to control ACPI_DEBUG 10335 10336Fixed the EC driver to honor _GLK. 10337 10338ASL Compiler, version X2016: 10339 10340Fixed support for the "FixedHw" keyword. Previously, the FixedHw 10341address space was set to 0, not 0x7f as it should be. 10342 10343 ------------------------------------------ 10344Summary of changes for this label: 03_13_01 10345 10346 ACPI CA Core Subsystem: 10347 10348During ACPI initialization, the _SB_._INI method is now run if 10349present. 10350 10351Notify handler fix - notifies are deferred until the parent method 10352completes execution. This fixes the "mutex already acquired" 10353issue seen occasionally. 10354 10355Part of the "implicit conversion" rules in ACPI 2.0 have been 10356found to cause compatibility problems with existing ASL/AML. The 10357convert "result-to-target-type" implementation has been removed 10358for stores to method Args and Locals. Source operand conversion 10359is still fully implemented. Possible changes to ACPI 2.0 10360specification pending. 10361 10362Fix to AcpiRsCalculatePciRoutingTableLength to return correct 10363length. 10364 10365Fix for compiler warnings for 64-bit compiles. 10366 10367 Linux: 10368 10369/proc output aligned for easier parsing. 10370 10371Release-version compile problem fixed. 10372 10373New kernel configuration options documented in Configure.help. 10374 10375IBM 600E - Fixed Sleep button may generate "Invalid <NULL> 10376context" message. 10377 10378 OSPM: 10379 10380Power resource driver integrated with bus manager. 10381 10382Fixed kernel fault during active cooling for thermal zones. 10383 10384Source Code: 10385 10386The source code tree has been restructured. 10387 10388 10389 10390------------------------------------------ 10391Summary of changes for this label: 03_02_01 10392 10393 Linux OS Services Layer (OSL): 10394 10395Major revision of all Linux-specific code. 10396 10397Modularized all ACPI-specific drivers. 10398 10399Added new thermal zone and power resource drivers. 10400 10401Revamped /proc interface (new functionality is under /proc/acpi). 10402 10403New kernel configuration options. 10404 10405 Linux known issues: 10406 10407New kernel configuration options not documented in Configure.help 10408yet. 10409 10410 10411Module dependencies not currently implemented. If used, they 10412should be loaded in this order: busmgr, power, ec, system, 10413processor, battery, ac_adapter, button, thermal. 10414 10415Modules will not load if CONFIG_MODVERSION is set. 10416 10417IBM 600E - entering S5 may reboot instead of shutting down. 10418 10419IBM 600E - Sleep button may generate "Invalid <NULL> context" 10420message. 10421 10422Some systems may fail with "execution mutex already acquired" 10423message. 10424 10425 ACPI CA Core Subsystem: 10426 10427Added a new OSL Interface, AcpiOsGetThreadId. This was required 10428for the deadlock detection code. Defined to return a non-zero, 32- 10429bit thread ID for the currently executing thread. May be a non- 10430zero constant integer on single-thread systems. 10431 10432Implemented deadlock detection for internal subsystem mutexes. We 10433may add conditional compilation for this code (debug only) later. 10434 10435ASL/AML Mutex object semantics are now fully supported. This 10436includes multiple acquires/releases by owner and support for the 10437 10438Mutex SyncLevel parameter. 10439 10440A new "Force Release" mechanism automatically frees all ASL 10441Mutexes that have been acquired but not released when a thread 10442exits the interpreter. This forces conformance to the ACPI spec 10443("All mutexes must be released when an invocation exits") and 10444prevents deadlocked ASL threads. This mechanism can be expanded 10445(later) to monitor other resource acquisitions if OEM ASL code 10446continues to misbehave (which it will). 10447 10448Several new ACPI exception codes have been added for the Mutex 10449support. 10450 10451Recursive method calls are now allowed and supported (the ACPI 10452spec does in fact allow recursive method calls.) The number of 10453recursive calls is subject to the restrictions imposed by the 10454SERIALIZED method keyword and SyncLevel (ACPI 2.0) method 10455parameter. 10456 10457Implemented support for the SyncLevel parameter for control 10458methods (ACPI 2.0 feature) 10459 10460Fixed a deadlock problem when multiple threads attempted to use 10461the interpreter. 10462 10463Fixed a problem where the string length of a String package 10464element was not always set in a package returned from 10465AcpiEvaluateObject. 10466 10467Fixed a problem where the length of a String package element was 10468not always included in the length of the overall package returned 10469from AcpiEvaluateObject. 10470 10471Added external interfaces (Acpi*) to the ACPI debug memory 10472manager. This manager keeps a list of all outstanding 10473allocations, and can therefore detect memory leaks and attempts to 10474free memory blocks more than once. Useful for code such as the 10475power manager, etc. May not be appropriate for device drivers. 10476Performance with the debug code enabled is slow. 10477 10478The ACPI Global Lock is now an optional hardware element. 10479 10480 ASL Compiler Version X2015: 10481 10482Integrated changes to allow the compiler to be generated on 10483multiple platforms. 10484 10485Linux makefile added to generate the compiler on Linux 10486 10487 Source Code: 10488 10489All platform-specific headers have been moved to their own 10490subdirectory, Include/Platform. 10491 10492New source file added, Interpreter/ammutex.c 10493 10494New header file, Include/acstruct.h 10495 10496 Documentation: 10497 10498The programmer reference has been updated for the following new 10499interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree 10500 10501 ------------------------------------------ 10502Summary of changes for this label: 02_08_01 10503 10504Core ACPI CA Subsystem: Fixed a problem where an error was 10505incorrectly returned if the return resource buffer was larger than 10506the actual data (in the resource interfaces). 10507 10508References to named objects within packages are resolved to the 10509 10510full pathname string before packages are returned directly (via 10511the AcpiEvaluateObject interface) or indirectly via the resource 10512interfaces. 10513 10514Linux OS Services Layer (OSL): 10515 10516Improved /proc battery interface. 10517 10518 10519Added C-state debugging output and other miscellaneous fixes. 10520 10521ASL Compiler Version X2014: 10522 10523All defined method arguments can now be used as local variables, 10524including the ones that are not actually passed in as parameters. 10525The compiler tracks initialization of the arguments and issues an 10526exception if they are used without prior assignment (just like 10527locals). 10528 10529The -o option now specifies a filename prefix that is used for all 10530output files, including the AML output file. Otherwise, the 10531default behavior is as follows: 1) the AML goes to the file 10532specified in the DSDT. 2) all other output files use the input 10533source filename as the base. 10534 10535 ------------------------------------------ 10536Summary of changes for this label: 01_25_01 10537 10538Core ACPI CA Subsystem: Restructured the implementation of object 10539store support within the interpreter. This includes support for 10540the Store operator as well as any ASL operators that include a 10541target operand. 10542 10543Partially implemented support for Implicit Result-to-Target 10544conversion. This is when a result object is converted on the fly 10545to the type of an existing target object. Completion of this 10546support is pending further analysis of the ACPI specification 10547concerning this matter. 10548 10549CPU-specific code has been removed from the subsystem (hardware 10550directory). 10551 10552New Power Management Timer functions added 10553 10554Linux OS Services Layer (OSL): Moved system state transition code 10555to the core, fixed it, and modified Linux OSL accordingly. 10556 10557Fixed C2 and C3 latency calculations. 10558 10559 10560We no longer use the compilation date for the version message on 10561initialization, but retrieve the version from AcpiGetSystemInfo(). 10562 10563Incorporated for fix Sony VAIO machines. 10564 10565Documentation: The Programmer Reference has been updated and 10566reformatted. 10567 10568 10569ASL Compiler: Version X2013: Fixed a problem where the line 10570numbering and error reporting could get out of sync in the 10571presence of multiple include files. 10572 10573 ------------------------------------------ 10574Summary of changes for this label: 01_15_01 10575 10576Core ACPI CA Subsystem: 10577 10578Implemented support for type conversions in the execution of the 10579ASL Concatenate operator (The second operand is converted to 10580match the type of the first operand before concatenation.) 10581 10582Support for implicit source operand conversion is partially 10583implemented. The ASL source operand types Integer, Buffer, and 10584String are freely interchangeable for most ASL operators and are 10585converted by the interpreter on the fly as required. Implicit 10586Target operand conversion (where the result is converted to the 10587target type before storing) is not yet implemented. 10588 10589Support for 32-bit and 64-bit BCD integers is implemented. 10590 10591Problem fixed where a field read on an aligned field could cause a 10592read past the end of the field. 10593 10594New exception, AE_AML_NO_RETURN_VALUE, is returned when a method 10595does not return a value, but the caller expects one. (The ASL 10596compiler flags this as a warning.) 10597 10598ASL Compiler: 10599 10600Version X2011: 106011. Static typechecking of all operands is implemented. This 10602prevents the use of invalid objects (such as using a Package where 10603an Integer is required) at compile time instead of at interpreter 10604run-time. 106052. The ASL source line is printed with ALL errors and warnings. 106063. Bug fix for source EOF without final linefeed. 106074. Debug option is split into a parse trace and a namespace trace. 106085. Namespace output option (-n) includes initial values for 10609integers and strings. 106106. Parse-only option added for quick syntax checking. 106117. Compiler checks for duplicate ACPI name declarations 10612 10613Version X2012: 106141. Relaxed typechecking to allow interchangeability between 10615strings, integers, and buffers. These types are now converted by 10616the interpreter at runtime. 106172. Compiler reports time taken by each internal subsystem in the 10618debug output file. 10619 10620 10621 ------------------------------------------ 10622Summary of changes for this label: 12_14_00 10623 10624ASL Compiler: 10625 10626This is the first official release of the compiler. Since the 10627compiler requires elements of the Core Subsystem, this label 10628synchronizes everything. 10629 10630------------------------------------------ 10631Summary of changes for this label: 12_08_00 10632 10633 10634Fixed a problem where named references within the ASL definition 10635of both OperationRegions and CreateXXXFields did not work 10636properly. The symptom was an AE_AML_OPERAND_TYPE during 10637initialization of the region/field. This is similar (but not 10638related internally) to the problem that was fixed in the last 10639label. 10640 10641Implemented both 32-bit and 64-bit support for the BCD ASL 10642functions ToBCD and FromBCD. 10643 10644Updated all legal headers to include "2000" in the copyright 10645years. 10646 10647 ------------------------------------------ 10648Summary of changes for this label: 12_01_00 10649 10650Fixed a problem where method invocations within the ASL definition 10651of both OperationRegions and CreateXXXFields did not work 10652properly. The symptom was an AE_AML_OPERAND_TYPE during 10653initialization of the region/field: 10654 10655 nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments 10656[DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s) 10657(0x3005) 10658 10659Fixed a problem where operators with more than one nested 10660subexpression would fail. The symptoms were varied, by mostly 10661AE_AML_OPERAND_TYPE errors. This was actually a rather serious 10662problem that has gone unnoticed until now. 10663 10664 Subtract (Add (1,2), Multiply (3,4)) 10665 10666Fixed a problem where AcpiGetHandle didn't quite get fixed in the 10667previous build (The prefix part of a relative path was handled 10668incorrectly). 10669 10670Fixed a problem where Operation Region initialization failed if 10671the operation region name was a "namepath" instead of a simple 10672"nameseg". Symptom was an AE_NO_OPERAND error. 10673 10674Fixed a problem where an assignment to a local variable via the 10675indirect RefOf mechanism only worked for the first such 10676assignment. Subsequent assignments were ignored. 10677 10678 ------------------------------------------ 10679Summary of changes for this label: 11_15_00 10680 10681ACPI 2.0 table support with backwards support for ACPI 1.0 and the 106820.71 extensions. Note: although we can read ACPI 2.0 BIOS tables, 10683the AML interpreter does NOT have support for the new 2.0 ASL 10684grammar terms at this time. 10685 10686All ACPI hardware access is via the GAS structures in the ACPI 2.0 10687FADT. 10688 10689All physical memory addresses across all platforms are now 64 bits 10690wide. Logical address width remains dependent on the platform 10691(i.e., "void *"). 10692 10693AcpiOsMapMemory interface changed to a 64-bit physical address. 10694 10695The AML interpreter integer size is now 64 bits, as per the ACPI 106962.0 specification. 10697 10698For backwards compatibility with ACPI 1.0, ACPI tables with a 10699revision number less than 2 use 32-bit integers only. 10700 10701Fixed a problem where the evaluation of OpRegion operands did not 10702always resolve them to numbers properly. 10703 10704------------------------------------------ 10705Summary of changes for this label: 10_20_00 10706 10707Fix for CBN_._STA issue. This fix will allow correct access to 10708CBN_ OpRegions when the _STA returns 0x8. 10709 10710Support to convert ACPI constants (Ones, Zeros, One) to actual 10711values before a package object is returned 10712 10713Fix for method call as predicate to if/while construct causing 10714incorrect if/while behavior 10715 10716Fix for Else block package lengths sometimes calculated wrong (if 10717block > 63 bytes) 10718 10719Fix for Processor object length field, was always zero 10720 10721Table load abort if FACP sanity check fails 10722 10723Fix for problem with Scope(name) if name already exists 10724 10725Warning emitted if a named object referenced cannot be found 10726(resolved) during method execution. 10727 10728 10729 10730 10731 10732------------------------------------------ 10733Summary of changes for this label: 9_29_00 10734 10735New table initialization interfaces: AcpiInitializeSubsystem no 10736longer has any parameters AcpiFindRootPointer - Find the RSDP (if 10737necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP- 10738>RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by 10739AcpiLoadTables 10740 10741Note: These interface changes require changes to all existing OSDs 10742 10743The PCI_Config default address space handler is always installed 10744at the root namespace object. 10745 10746------------------------------------------- 10747Summary of changes for this label: 09_15_00 10748 10749The new initialization architecture is implemented. New 10750interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize) 10751AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace 10752 10753(Namespace is automatically loaded when a table is loaded) 10754 10755The ACPI_OPERAND_OBJECT has been optimized to shrink its size from 1075652 bytes to 32 bytes. There is usually one of these for every 10757namespace object, so the memory savings is significant. 10758 10759Implemented just-in-time evaluation of the CreateField operators. 10760 10761Bug fixes for IA-64 support have been integrated. 10762 10763Additional code review comments have been implemented 10764 10765The so-called "third pass parse" has been replaced by a final walk 10766through the namespace to initialize all operation regions (address 10767spaces) and fields that have not yet been initialized during the 10768execution of the various _INI and REG methods. 10769 10770New file - namespace/nsinit.c 10771 10772------------------------------------------- 10773Summary of changes for this label: 09_01_00 10774 10775Namespace manager data structures have been reworked to change the 10776primary object from a table to a single object. This has 10777resulted in dynamic memory savings of 3X within the namespace and 107782X overall in the ACPI CA subsystem. 10779 10780Fixed problem where the call to AcpiEvFindPciRootBuses was 10781inadvertently left commented out. 10782 10783Reduced the warning count when generating the source with the GCC 10784compiler. 10785 10786Revision numbers added to each module header showing the 10787SourceSafe version of the file. Please refer to this version 10788number when giving us feedback or comments on individual modules. 10789 10790The main object types within the subsystem have been renamed to 10791clarify their purpose: 10792 10793ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT 10794ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT 10795ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE 10796 10797NOTE: no changes to the initialization sequence are included in 10798this label. 10799 10800------------------------------------------- 10801Summary of changes for this label: 08_23_00 10802 10803Fixed problem where TerminateControlMethod was being called 10804multiple times per method 10805 10806Fixed debugger problem where single stepping caused a semaphore to 10807be oversignalled 10808 10809Improved performance through additional parse object caching - 10810added ACPI_EXTENDED_OP type 10811 10812------------------------------------------- 10813Summary of changes for this label: 08_10_00 10814 10815Parser/Interpreter integration: Eliminated the creation of 10816complete parse trees for ACPI tables and control methods. 10817Instead, parse subtrees are created and then deleted as soon as 10818they are processed (Either entered into the namespace or executed 10819by the interpreter). This reduces the use of dynamic kernel 10820memory significantly. (about 10X) 10821 10822Exception codes broken into classes and renumbered. Be sure to 10823recompile all code that includes acexcep.h. Hopefully we won't 10824have to renumber the codes again now that they are split into 10825classes (environment, programmer, AML code, ACPI table, and 10826internal). 10827 10828Fixed some additional alignment issues in the Resource Manager 10829subcomponent 10830 10831Implemented semaphore tracking in the AcpiExec utility, and fixed 10832several places where mutexes/semaphores were being unlocked 10833without a corresponding lock operation. There are no known 10834semaphore or mutex "leaks" at this time. 10835 10836Fixed the case where an ASL Return operator is used to return an 10837unnamed package. 10838 10839------------------------------------------- 10840Summary of changes for this label: 07_28_00 10841 10842Fixed a problem with the way addresses were calculated in 10843AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem 10844manifested itself when a Field was created with WordAccess or 10845DwordAccess, but the field unit defined within the Field was less 10846 10847than a Word or Dword. 10848 10849Fixed a problem in AmlDumpOperands() module's loop to pull 10850operands off of the operand stack to display information. The 10851problem manifested itself as a TLB error on 64-bit systems when 10852accessing an operand stack with two or more operands. 10853 10854Fixed a problem with the PCI configuration space handlers where 10855context was getting confused between accesses. This required a 10856change to the generic address space handler and address space 10857setup definitions. Handlers now get both a global handler context 10858(this is the one passed in by the user when executing 10859AcpiInstallAddressSpaceHandler() and a specific region context 10860that is unique to each region (For example, the _ADR, _SEG and 10861_BBN values associated with a specific region). The generic 10862function definitions have changed to the following: 10863 10864typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function, 10865UINT32 Address, UINT32 BitWidth, UINT32 *Value, void 10866*HandlerContext, // This used to be void *Context void 10867*RegionContext); // This is an additional parameter 10868 10869typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE 10870RegionHandle, UINT32 Function, void *HandlerContext, void 10871**RegionContext); // This used to be **ReturnContext 10872 10873------------------------------------------- 10874Summary of changes for this label: 07_21_00 10875 10876Major file consolidation and rename. All files within the 10877interpreter have been renamed as well as most header files. This 10878was done to prevent collisions with existing files in the host 10879OSs -- filenames such as "config.h" and "global.h" seem to be 10880quite common. The VC project files have been updated. All 10881makefiles will require modification. 10882 10883The parser/interpreter integration continues in Phase 5 with the 10884implementation of a complete 2-pass parse (the AML is parsed 10885twice) for each table; This avoids the construction of a huge 10886parse tree and therefore reduces the amount of dynamic memory 10887required by the subsystem. Greater use of the parse object cache 10888means that performance is unaffected. 10889 10890Many comments from the two code reviews have been rolled in. 10891 10892The 64-bit alignment support is complete. 10893 10894------------------------------------------- 10895Summary of changes for this label: 06_30_00 10896 10897With a nod and a tip of the hat to the technology of yesteryear, 10898we've added support in the source code for 80 column output 10899devices. The code is now mostly constrained to 80 columns or 10900less to support environments and editors that 1) cannot display 10901or print more than 80 characters on a single line, and 2) cannot 10902disable line wrapping. 10903 10904A major restructuring of the namespace data structure has been 10905completed. The result is 1) cleaner and more 10906understandable/maintainable code, and 2) a significant reduction 10907in the dynamic memory requirement for each named ACPI object 10908(almost half). 10909 10910------------------------------------------- 10911Summary of changes for this label: 06_23_00 10912 10913Linux support has been added. In order to obtain approval to get 10914the ACPI CA subsystem into the Linux kernel, we've had to make 10915quite a few changes to the base subsystem that will affect all 10916users (all the changes are generic and OS- independent). The 10917effects of these global changes have been somewhat far reaching. 10918Files have been merged and/or renamed and interfaces have been 10919renamed. The major changes are described below. 10920 10921Osd* interfaces renamed to AcpiOs* to eliminate namespace 10922pollution/confusion within our target kernels. All OSD 10923interfaces must be modified to match the new naming convention. 10924 10925Files merged across the subsystem. A number of the smaller source 10926and header files have been merged to reduce the file count and 10927increase the density of the existing files. There are too many 10928to list here. In general, makefiles that call out individual 10929files will require rebuilding. 10930 10931Interpreter files renamed. All interpreter files now have the 10932prefix am* instead of ie* and is*. 10933 10934Header files renamed: The acapi.h file is now acpixf.h. The 10935acpiosd.h file is now acpiosxf.h. We are removing references to 10936the acronym "API" since it is somewhat windowsy. The new name is 10937"external interface" or xface or xf in the filenames.j 10938 10939 10940All manifest constants have been forced to upper case (some were 10941mixed case.) Also, the string "ACPI_" has been prepended to many 10942(not all) of the constants, typedefs, and structs. 10943 10944The globals "DebugLevel" and "DebugLayer" have been renamed 10945"AcpiDbgLevel" and "AcpiDbgLayer" respectively. 10946 10947All other globals within the subsystem are now prefixed with 10948"AcpiGbl_" Internal procedures within the subsystem are now 10949prefixed with "Acpi" (with only a few exceptions). The original 10950two-letter abbreviation for the subcomponent remains after "Acpi" 10951- for example, CmCallocate became AcpiCmCallocate. 10952 10953Added a source code translation/conversion utility. Used to 10954generate the Linux source code, it can be modified to generate 10955other types of source as well. Can also be used to cleanup 10956existing source by removing extraneous spaces and blank lines. 10957Found in tools/acpisrc/* 10958 10959OsdUnMapMemory was renamed to OsdUnmapMemory and then 10960AcpiOsUnmapMemory. (UnMap became Unmap). 10961 10962A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore. 10963When set to one, this indicates that the caller wants to use the 10964 10965semaphore as a mutex, not a counting semaphore. ACPI CA uses 10966both types. However, implementers of this call may want to use 10967different OS primitives depending on the type of semaphore 10968requested. For example, some operating systems provide separate 10969 10970"mutex" and "semaphore" interfaces - where the mutex interface is 10971much faster because it doesn't have all the overhead of a full 10972semaphore implementation. 10973 10974Fixed a deadlock problem where a method that accesses the PCI 10975address space can block forever if it is the first access to the 10976space. 10977 10978------------------------------------------- 10979Summary of changes for this label: 06_02_00 10980 10981Support for environments that cannot handle unaligned data 10982accesses (e.g. firmware and OS environments devoid of alignment 10983handler technology namely SAL/EFI and the IA-64 Linux kernel) has 10984been added (via configurable macros) in these three areas: - 10985Transfer of data from the raw AML byte stream is done via byte 10986moves instead of word/dword/qword moves. - External objects are 10987aligned within the user buffer, including package elements (sub- 10988objects). - Conversion of name strings to UINT32 Acpi Names is now 10989done byte-wise. 10990 10991The Store operator was modified to mimic Microsoft's 10992implementation when storing to a Buffer Field. 10993 10994Added a check of the BM_STS bit before entering C3. 10995 10996The methods subdirectory has been obsoleted and removed. A new 10997file, cmeval.c subsumes the functionality. 10998 10999A 16-bit (DOS) version of AcpiExec has been developed. The 11000makefile is under the acpiexec directory. 11001