1---------------------------------------- 211 January 2012. Summary of changes for version 20120111: 3 4This release is available at www.acpica.org/downloads. 5The ACPI 5.0 specification is available at www.acpi.info. 6 71) ACPICA Core Subsystem: 8 9Implemented a new mechanism to allow host device drivers to check for address 10range conflicts with ACPI Operation Regions. Both SystemMemory and SystemIO 11address spaces are supported. A new external interface, AcpiCheckAddressRange, 12allows drivers to check an address range against the ACPI namespace. See the 13ACPICA reference for additional details. Adds one new file, 14utilities/utaddress.c. Lin Ming, Bob Moore. 15 16Fixed several issues with the ACPI 5.0 FADT support: Add the sleep Control and 17Status registers, update the ACPI 5.0 flags, and update internal data 18structures to handle an FADT larger than 256 bytes. The size of the ACPI 5.0 19FADT is 268 bytes. 20 21Updated all ACPICA copyrights and signons to 2012. Added the 2012 copyright to 22all module headers and signons, including the standard Linux header. This 23affects virtually every file in the ACPICA core subsystem, iASL compiler, and 24all ACPICA utilities. 25 26Example Code and Data Size: These are the sizes for the OS-independent 27acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug 28version of the code includes the debug output trace mechanism and has a much 29larger code and data size. 30 31 Previous Release: 32 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total 33 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total 34 Current Release: 35 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total 36 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total 37 38 392) iASL Compiler/Disassembler and Tools: 40 41Disassembler: fixed a problem with the automatic resource tag generation 42support. Fixes a problem where the resource tags are inadvertently not 43constructed if the table being disassembled contains external references to 44control methods. Moved the actual construction of the tags to after the final 45namespace is constructed (after 2nd parse is invoked due to external control 46method references.) ACPICA BZ 941. 47 48Table Compiler: Make all "generic" operators caseless. These are the operators 49like UINT8, String, etc. Making these caseless improves ease-of-use. ACPICA BZ 50934. 51 52---------------------------------------- 5323 November 2011. Summary of changes for version 20111123: 54 550) ACPI 5.0 Support: 56 57This release contains full support for the ACPI 5.0 specification, as 58summarized below. 59 60Reduced Hardware Support: 61------------------------- 62 63This support allows for ACPI systems without the usual ACPI hardware. This 64support is enabled by a flag in the revision 5 FADT. If it is set, ACPICA will 65not attempt to initialize or use any of the usual ACPI hardware. Note, when 66this flag is set, all of the following ACPI hardware is assumed to be not 67present and is not initialized or accessed: 68 69 General Purpose Events (GPEs) 70 Fixed Events (PM1a/PM1b and PM Control) 71 Power Management Timer and Console Buttons (power/sleep) 72 Real-time Clock Alarm 73 Global Lock 74 System Control Interrupt (SCI) 75 The FACS is assumed to be non-existent 76 77ACPI Tables: 78------------ 79 80All new tables and updates to existing tables are fully supported in the 81ACPICA headers (for use by device drivers), the disassembler, and the iASL 82Data Table Compiler. ACPI 5.0 defines these new tables: 83 84 BGRT /* Boot Graphics Resource Table */ 85 DRTM /* Dynamic Root of Trust for Measurement table */ 86 FPDT /* Firmware Performance Data Table */ 87 GTDT /* Generic Timer Description Table */ 88 MPST /* Memory Power State Table */ 89 PCCT /* Platform Communications Channel Table */ 90 PMTT /* Platform Memory Topology Table */ 91 RASF /* RAS Feature table */ 92 93Operation Regions/SpaceIDs: 94--------------------------- 95 96All new operation regions are fully supported by the iASL compiler, the 97disassembler, and the ACPICA runtime code (for dispatch to region handlers.) 98The new operation region Space IDs are: 99 100 GeneralPurposeIo 101 GenericSerialBus 102 103Resource Descriptors: 104--------------------- 105 106All new ASL resource descriptors are fully supported by the iASL compiler, the 107ASL/AML disassembler, and the ACPICA runtime Resource Manager code (including 108all new predefined resource tags). New descriptors are: 109 110 FixedDma 111 GpioIo 112 GpioInt 113 I2cSerialBus 114 SpiSerialBus 115 UartSerialBus 116 117ASL/AML Operators, New and Modified: 118------------------------------------ 119 120One new operator is added, the Connection operator, which is used to associate 121a GeneralPurposeIo or GenericSerialBus resource descriptor with individual 122field objects within an operation region. Several new protocols are associated 123with the AccessAs operator. All are fully supported by the iASL compiler, 124disassembler, and runtime ACPICA AML interpreter: 125 126 Connection // Declare Field Connection attributes 127 AccessAs: AttribBytes (n) // Read/Write N-Bytes Protocol 128 AccessAs: AttribRawBytes (n) // Raw Read/Write N-Bytes Protocol 129 AccessAs: AttribRawProcessBytes (n) // Raw Process Call Protocol 130 RawDataBuffer // Data type for Vendor Data fields 131 132Predefined ASL/AML Objects: 133--------------------------- 134 135All new predefined objects/control-methods are supported by the iASL compiler 136and the ACPICA runtime validation/repair (arguments and return values.) New 137predefined names include the following: 138 139Standard Predefined Names (Objects or Control Methods): 140 _AEI, _CLS, _CPC, _CWS, _DEP, 141 _DLM, _EVT, _GCP, _CRT, _GWS, 142 _HRV, _PRE, _PSE, _SRT, _SUB. 143 144Resource Tags (Names used to access individual fields within resource 145descriptors): 146 _DBT, _DPL, _DRS, _END, _FLC, 147 _IOR, _LIN, _MOD, _PAR, _PHA, 148 _PIN, _PPI, _POL, _RXL, _SLV, 149 _SPE, _STB, _TXL, _VEN. 150 151ACPICA External Interfaces: 152--------------------------- 153 154Several new interfaces have been defined for use by ACPI-related device 155drivers and other host OS services: 156 157AcpiAcquireMutex and AcpiReleaseMutex: These interfaces allow the host OS to 158acquire and release AML mutexes that are defined in the DSDT/SSDT tables 159provided by the BIOS. They are intended to be used in conjunction with the 160ACPI 5.0 _DLM (Device Lock Method) in order to provide transaction-level 161mutual exclusion with the AML code/interpreter. 162 163AcpiGetEventResources: Returns the (formatted) resource descriptors as defined 164by the ACPI 5.0 _AEI object (ACPI Event Information). This object provides 165resource descriptors associated with hardware-reduced platform events, similar 166to the AcpiGetCurrentResources interface. 167 168Operation Region Handlers: For General Purpose IO and Generic Serial Bus 169operation regions, information about the Connection() object and any optional 170length information is passed to the region handler within the Context 171parameter. 172 173AcpiBufferToResource: This interface converts a raw AML buffer containing a 174resource template or resource descriptor to the ACPI_RESOURCE internal format 175suitable for use by device drivers. Can be used by an operation region handler 176to convert the Connection() buffer object into a ACPI_RESOURCE. 177 178Miscellaneous/Tools/TestSuites: 179------------------------------- 180 181Support for extended _HID names (Four alpha characters instead of three). 182Support for ACPI 5.0 features in the AcpiExec and AcpiHelp utilities. 183Support for ACPI 5.0 features in the ASLTS test suite. 184Fully updated documentation (ACPICA and iASL reference documents.) 185 186ACPI Table Definition Language: 187------------------------------- 188 189Support for this language was implemented and released as a subsystem of the 190iASL compiler in 2010. (See the iASL compiler User Guide.) 191 192 193Non-ACPI 5.0 changes for this release: 194-------------------------------------- 195 1961) ACPICA Core Subsystem: 197 198Fix a problem with operation region declarations where a failure can occur if 199the region name and an argument that evaluates to an object (such as the 200region address) are in different namespace scopes. Lin Ming, ACPICA BZ 937. 201 202Do not abort an ACPI table load if an invalid space ID is found within. This 203will be caught later if the offending method is executed. ACPICA BZ 925. 204 205Fixed an issue with the FFixedHW space ID where the ID was not always 206recognized properly (Both ACPICA and iASL). ACPICA BZ 926. 207 208Fixed a problem with the 32-bit generation of the unix-specific OSL 209(osunixxf.c). Lin Ming, ACPICA BZ 936. 210 211Several changes made to enable generation with the GCC 4.6 compiler. ACPICA BZ 212935. 213 214New error messages: Unsupported I/O requests (not 8/16/32 bit), and Index/Bank 215field registers out-of-range. 216 2172) iASL Compiler/Disassembler and Tools: 218 219iASL: Implemented the __PATH__ operator, which returns the full pathname of 220the current source file. 221 222AcpiHelp: Automatically display expanded keyword information for all ASL 223operators. 224 225Debugger: Add "Template" command to disassemble/dump resource template 226buffers. 227 228Added a new master script to generate and execute the ASLTS test suite. 229Automatically handles 32- and 64-bit generation. See tests/aslts.sh 230 231iASL: Fix problem with listing generation during processing of the Switch() 232operator where AML listing was disabled until the entire Switch block was 233completed. 234 235iASL: Improve support for semicolon statement terminators. Fix "invalid 236character" message for some cases when the semicolon is used. Semicolons are 237now allowed after every <Term> grammar element. ACPICA BZ 927. 238 239iASL: Fixed some possible aliasing warnings during generation. ACPICA BZ 923. 240 241Disassembler: Fix problem with disassembly of the DataTableRegion operator 242where an inadvertent "Unhandled deferred opcode" message could be generated. 243 2443) Example Code and Data Size 245 246These are the sizes for the OS-independent acpica.lib produced by the 247Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code 248includes the debug output trace mechanism and has a much larger code and data 249size. 250 251 Previous Release: 252 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 253 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 254 Current Release: 255 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total 256 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total 257 258---------------------------------------- 25922 September 2011. Summary of changes for version 20110922: 260 2610) ACPI 5.0 News: 262 263Support for ACPI 5.0 in ACPICA has been underway for several months and will 264be released at the same time that ACPI 5.0 is officially released. 265 266The ACPI 5.0 specification is on track for release in the next few months. 267 2681) ACPICA Core Subsystem: 269 270Fixed a problem where the maximum sleep time for the Sleep() operator was 271intended to be limited to two seconds, but was inadvertently limited to 20 272seconds instead. 273 274Linux and Unix makefiles: Added header file dependencies to ensure correct 275generation of ACPICA core code and utilities. Also simplified the makefiles 276considerably through the use of the vpath variable to specify search paths. 277ACPICA BZ 924. 278 2792) iASL Compiler/Disassembler and Tools: 280 281iASL: Implemented support to check the access length for all fields created to 282access named Resource Descriptor fields. For example, if a resource field is 283defined to be two bits, a warning is issued if a CreateXxxxField() is used 284with an incorrect bit length. This is implemented for all current resource 285descriptor names. ACPICA BZ 930. 286 287Disassembler: Fixed a byte ordering problem with the output of 24-bit and 56- 288bit integers. 289 290iASL: Fixed a couple of issues associated with variable-length package 291objects. 1) properly handle constants like One, Ones, Zero -- do not make a 292VAR_PACKAGE when these are used as a package length. 2) Allow the VAR_PACKAGE 293opcode (in addition to PACKAGE) when validating object types for predefined 294names. 295 296iASL: Emit statistics for all output files (instead of just the ASL input and 297AML output). Includes listings, hex files, etc. 298 299iASL: Added -G option to the table compiler to allow the compilation of custom 300ACPI tables. The only part of a table that is required is the standard 36-byte 301ACPI header. 302 303AcpiXtract: Ported to the standard ACPICA environment (with ACPICA headers), 304which also adds correct 64-bit support. Also, now all output filenames are 305completely lower case. 306 307AcpiExec: Ignore any non-AML tables (tables other than DSDT or SSDT) when 308loading table files. A warning is issued for any such tables. The only 309exception is an FADT. This also fixes a possible fault when attempting to load 310non-AML tables. ACPICA BZ 932. 311 312AcpiHelp: Added the AccessAs and Offset operators. Fixed a problem where a 313missing table terminator could cause a fault when using the -p option. 314 315AcpiSrc: Fixed a possible divide-by-zero fault when generating file 316statistics. 317 3183) Example Code and Data Size 319 320These are the sizes for the OS-independent acpica.lib produced by the 321Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code 322includes the debug output trace mechanism and has a much larger code and data 323size. 324 325 Previous Release (VC 9.0): 326 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 327 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 328 Current Release (VC 9.0): 329 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 330 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 331 332 333---------------------------------------- 33423 June 2011. Summary of changes for version 20110623: 335 3361) ACPI CA Core Subsystem: 337 338Updated the predefined name repair mechanism to not attempt repair of a _TSS 339return object if a _PSS object is present. We can only sort the _TSS return 340package if there is no _PSS within the same scope. This is because if _PSS is 341present, the ACPI specification dictates that the _TSS Power Dissipation field 342is to be ignored, and therefore some BIOSs leave garbage values in the _TSS 343Power field(s). In this case, it is best to just return the _TSS package as- 344is. Reported by, and fixed with assistance from Fenghua Yu. 345 346Added an option to globally disable the control method return value validation 347and repair. This runtime option can be used to disable return value repair if 348this is causing a problem on a particular machine. Also added an option to 349AcpiExec (-dr) to set this disable flag. 350 351All makefiles and project files: Major changes to improve generation of ACPICA 352tools. ACPICA BZ 912: 353 Reduce default optimization levels to improve compatibility 354 For Linux, add strict-aliasing=0 for gcc 4 355 Cleanup and simplify use of command line defines 356 Cleanup multithread library support 357 Improve usage messages 358 359Linux-specific header: update handling of THREAD_ID and pthread. For the 32- 360bit case, improve casting to eliminate possible warnings, especially with the 361acpica tools. 362 363Example Code and Data Size: These are the sizes for the OS-independent 364acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug 365version of the code includes the debug output trace mechanism and has a much 366larger code and data size. 367 368 Previous Release (VC 9.0): 369 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total 370 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 371 Current Release (VC 9.0): 372 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 373 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 374 3752) iASL Compiler/Disassembler and Tools: 376 377With this release, a new utility named "acpihelp" has been added to the ACPICA 378package. This utility summarizes the ACPI specification chapters for the ASL 379and AML languages. It generates under Linux/Unix as well as Windows, and 380provides the following functionality: 381 Find/display ASL operator(s) -- with description and syntax. 382 Find/display ASL keyword(s) -- with exact spelling and descriptions. 383 Find/display ACPI predefined name(s) -- with description, number 384 of arguments, and the return value data type. 385 Find/display AML opcode name(s) -- with opcode, arguments, and grammar. 386 Decode/display AML opcode -- with opcode name, arguments, and grammar. 387 388Service Layers: Make multi-thread support configurable. Conditionally compile 389the multi-thread support so that threading libraries will not be linked if not 390necessary. The only tool that requires multi-thread support is AcpiExec. 391 392iASL: Update yyerrror/AslCompilerError for "const" errors. Newer versions of 393Bison appear to want the interface to yyerror to be a const char * (or at 394least this is a problem when generating iASL on some systems.) ACPICA BZ 923 395Pierre Lejeune. 396 397Tools: Fix for systems where O_BINARY is not defined. Only used for Windows 398versions of the tools. 399 400---------------------------------------- 40127 May 2011. Summary of changes for version 20110527: 402 4031) ACPI CA Core Subsystem: 404 405ASL Load() operator: Reinstate most restrictions on the incoming ACPI table 406signature. Now, only allow SSDT, OEMx, and a null signature. History: 407 1) Originally, we checked the table signature for "SSDT" or "PSDT". 408 (PSDT is now obsolete.) 409 2) We added support for OEMx tables, signature "OEM" plus a fourth 410 "don't care" character. 411 3) Valid tables were encountered with a null signature, so we just 412 gave up on validating the signature, (05/2008). 413 4) We encountered non-AML tables such as the MADT, which caused 414 interpreter errors and kernel faults. So now, we once again allow 415 only SSDT, OEMx, and now, also a null signature. (05/2011). 416 417Added the missing _TDL predefined name to the global name list in order to 418enable validation. Affects both the core ACPICA code and the iASL compiler. 419 420Example Code and Data Size: These are the sizes for the OS-independent 421acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug 422version of the code includes the debug output trace mechanism and has a much 423larger code and data size. 424 425 Previous Release (VC 9.0): 426 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total 427 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total 428 Current Release (VC 9.0): 429 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total 430 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 431 4322) iASL Compiler/Disassembler and Tools: 433 434Debugger/AcpiExec: Implemented support for "complex" method arguments on the 435debugger command line. This adds support beyond simple integers -- including 436Strings, Buffers, and Packages. Includes support for nested packages. 437Increased the default command line buffer size to accommodate these arguments. 438See the ACPICA reference for details and syntax. ACPICA BZ 917. 439 440Debugger/AcpiExec: Implemented support for "default" method arguments for the 441Execute/Debug command. Now, the debugger will always invoke a control method 442with the required number of arguments -- even if the command line specifies 443none or insufficient arguments. It uses default integer values for any missing 444arguments. Also fixes a bug where only six method arguments maximum were 445supported instead of the required seven. 446 447Debugger/AcpiExec: Add a maximum buffer length parameter to AcpiOsGetLine and 448also return status in order to prevent buffer overruns. See the ACPICA 449reference for details and syntax. ACPICA BZ 921 450 451iASL: Cleaned up support for Berkeley yacc. A general cleanup of code and 452makefiles to simplify support for the two different but similar parser 453generators, bison and yacc. 454 455Updated the generic unix makefile for gcc 4. The default gcc version is now 456expected to be 4 or greater, since options specific to gcc 4 are used. 457 458---------------------------------------- 45913 April 2011. Summary of changes for version 20110413: 460 4611) ACPI CA Core Subsystem: 462 463Implemented support to execute a so-called "orphan" _REG method under the EC 464device. This change will force the execution of a _REG method underneath the 465EC 466device even if there is no corresponding operation region of type 467EmbeddedControl. Fixes a problem seen on some machines and apparently is 468compatible with Windows behavior. ACPICA BZ 875. 469 470Added more predefined methods that are eligible for automatic NULL package 471element removal. This change adds another group of predefined names to the 472list 473of names that can be repaired by having NULL package elements dynamically 474removed. This group are those methods that return a single variable-length 475package containing simple data types such as integers, buffers, strings. This 476includes: _ALx, _BCL, _CID,_ DOD, _EDL, _FIX, _PCL, _PLD, _PMD, _PRx, _PSL, 477_Sx, 478and _TZD. ACPICA BZ 914. 479 480Split and segregated all internal global lock functions to a new file, 481evglock.c. 482 483Updated internal address SpaceID for DataTable regions. Moved this internal 484space 485id in preparation for ACPI 5.0 changes that will include some new space IDs. 486This 487change should not affect user/host code. 488 489Example Code and Data Size: These are the sizes for the OS-independent 490acpica.lib 491produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug version of 492the code includes the debug output trace mechanism and has a much larger code 493and 494data size. 495 496 Previous Release (VC 9.0): 497 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total 498 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total 499 Current Release (VC 9.0): 500 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total 501 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total 502 5032) iASL Compiler/Disassembler and Tools: 504 505iASL/DTC: Major update for new grammar features. Allow generic data types in 506custom ACPI tables. Field names are now optional. Any line can be split to 507multiple lines using the continuation char (\). Large buffers now use line- 508continuation character(s) and no colon on the continuation lines. See the 509grammar 510update in the iASL compiler reference. ACPI BZ 910,911. Lin Ming, Bob Moore. 511 512iASL: Mark ASL "Return()" and the simple "Return" as "Null" return statements. 513Since the parser stuffs a "zero" as the return value for these statements (due 514to 515the underlying AML grammar), they were seen as "return with value" by the iASL 516semantic checking. They are now seen correctly as "null" return statements. 517 518iASL: Check if a_REG declaration has a corresponding Operation Region. Adds a 519check for each _REG to ensure that there is in fact a corresponding operation 520region declaration in the same scope. If not, the _REG method is not very 521useful 522since it probably won't be executed. ACPICA BZ 915. 523 524iASL/DTC: Finish support for expression evaluation. Added a new expression 525parser 526that implements c-style operator precedence and parenthesization. ACPICA 527bugzilla 528908. 529 530Disassembler/DTC: Remove support for () and <> style comments in data tables. 531Now 532that DTC has full expression support, we don't want to have comment strings 533that 534start with a parentheses or a less-than symbol. Now, only the standard /* and 535// 536comments are supported, as well as the bracket [] comments. 537 538AcpiXtract: Fix for RSDP and dynamic SSDT extraction. These tables have 539"unusual" 540headers in the acpidump file. Update the header validation to support these 541tables. Problem introduced in previous AcpiXtract version in the change to 542support "wrong checksum" error messages emitted by acpidump utility. 543 544iASL: Add a * option to generate all template files (as a synonym for ALL) as 545in 546"iasl -T *" or "iasl -T ALL". 547 548iASL/DTC: Do not abort compiler on fatal errors. We do not want to completely 549abort the compiler on "fatal" errors, simply should abort the current compile. 550This allows multiple compiles with a single (possibly wildcard) compiler 551invocation. 552 553---------------------------------------- 55416 March 2011. Summary of changes for version 20110316: 555 5561) ACPI CA Core Subsystem: 557 558Fixed a problem caused by a _PRW method appearing at the namespace root scope 559during the setup of wake GPEs. A fault could occur if a _PRW directly under 560the 561root object was passed to the AcpiSetupGpeForWake interface. Lin Ming. 562 563Implemented support for "spurious" Global Lock interrupts. On some systems, a 564global lock interrupt can occur without the pending flag being set. Upon a GL 565interrupt, we now ensure that a thread is actually waiting for the lock before 566signaling GL availability. Rafael Wysocki, Bob Moore. 567 568Example Code and Data Size: These are the sizes for the OS-independent 569acpica.lib 570produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug version of 571the code includes the debug output trace mechanism and has a much larger code 572and 573data size. 574 575 Previous Release (VC 9.0): 576 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 577 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 578 Current Release (VC 9.0): 579 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total 580 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total 581 5822) iASL Compiler/Disassembler and Tools: 583 584Implemented full support for the "SLIC" ACPI table. Includes support in the 585header files, disassembler, table compiler, and template generator. Bob Moore, 586Lin Ming. 587 588AcpiXtract: Correctly handle embedded comments and messages from AcpiDump. 589Apparently some or all versions of acpidump will occasionally emit a comment 590like 591"Wrong checksum", etc., into the dump file. This was causing problems for 592AcpiXtract. ACPICA BZ 905. 593 594iASL: Fix the Linux makefile by removing an inadvertent double file inclusion. 595ACPICA BZ 913. 596 597AcpiExec: Update installation of operation region handlers. Install one 598handler 599for a user-defined address space. This is used by the ASL test suite (ASLTS). 600 601---------------------------------------- 60211 February 2011. Summary of changes for version 20110211: 603 6041) ACPI CA Core Subsystem: 605 606Added a mechanism to defer _REG methods for some early-installed handlers. 607Most user handlers should be installed before call to AcpiEnableSubsystem. 608However, Event handlers and region handlers should be installed after 609AcpiInitializeObjects. Override handlers for the "default" regions should be 610installed early, however. This change executes all _REG methods for the 611default regions (Memory/IO/PCI/DataTable) simultaneously to prevent any 612chicken/egg issues between them. ACPICA BZ 848. 613 614Implemented an optimization for GPE detection. This optimization will simply 615ignore GPE registers that contain no enabled GPEs -- there is no need to 616read the register since this information is available internally. This 617becomes more important on machines with a large GPE space. ACPICA bugzilla 618884. Lin Ming. Suggestion from Joe Liu. 619 620Removed all use of the highly unreliable FADT revision field. The revision 621number in the FADT has been found to be completely unreliable and cannot be 622trusted. Only the actual table length can be used to infer the version. This 623change updates the ACPICA core and the disassembler so that both no longer 624even look at the FADT version and instead depend solely upon the FADT 625length. 626 627Fix an unresolved name issue for the no-debug and no-error-message source 628generation cases. The _AcpiModuleName was left undefined in these cases, but 629it is actually needed as a parameter to some interfaces. Define 630_AcpiModuleName as a null string in these cases. ACPICA Bugzilla 888. 631 632Split several large files (makefiles and project files updated) 633 utglobal.c -> utdecode.c 634 dbcomds.c -> dbmethod.c dbnames.c 635 dsopcode.c -> dsargs.c dscontrol.c 636 dsload.c -> dsload2.c 637 aslanalyze.c -> aslbtypes.c aslwalks.c 638 639Example Code and Data Size: These are the sizes for the OS-independent 640acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 641debug version of the code includes the debug output trace mechanism and has 642a much larger code and data size. 643 644 Previous Release (VC 9.0): 645 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 646 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 647 Current Release (VC 9.0): 648 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 649 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 650 6512) iASL Compiler/Disassembler and Tools: 652 653iASL: Implemented the predefined macros __LINE__, __FILE__, and __DATE__. 654These are useful C-style macros with the standard definitions. ACPICA 655bugzilla 898. 656 657iASL/DTC: Added support for integer expressions and labels. Support for full 658expressions for all integer fields in all ACPI tables. Support for labels in 659"generic" portions of tables such as UEFI. See the iASL reference manual. 660 661Debugger: Added a command to display the status of global handlers. The 662"handlers" command will display op region, fixed event, and miscellaneous 663global handlers. installation status -- and for op regions, whether default 664or user-installed handler will be used. 665 666iASL: Warn if reserved method incorrectly returns a value. Many predefined 667names are defined such that they do not return a value. If implemented as a 668method, issue a warning if such a name explicitly returns a value. ACPICA 669Bugzilla 855. 670 671iASL: Added detection of GPE method name conflicts. Detects a conflict where 672there are two GPE methods of the form _Lxy and _Exy in the same scope. (For 673example, _L1D and _E1D in the same scope.) ACPICA bugzilla 848. 674 675iASL/DTC: Fixed a couple input scanner issues with comments and line 676numbers. Comment remover could get confused and miss a comment ending. Fixed 677a problem with line counter maintenance. 678 679iASL/DTC: Reduced the severity of some errors from fatal to error. There is 680no need to abort on simple errors within a field definition. 681 682Debugger: Simplified the output of the help command. All help output now in 683a single screen, instead of help subcommands. ACPICA Bugzilla 897. 684 685---------------------------------------- 68612 January 2011. Summary of changes for version 20110112: 687 6881) ACPI CA Core Subsystem: 689 690Fixed a race condition between method execution and namespace walks that can 691possibly cause a fault. The problem was apparently introduced in version 69220100528 as a result of a performance optimization that reduces the number of 693namespace walks upon method exit by using the delete_namespace_subtree 694function instead of the delete_namespace_by_owner function used previously. 695Bug is a missing namespace lock in the delete_namespace_subtree function. 696dana.myers@oracle.com 697 698Fixed several issues and a possible fault with the automatic "serialized" 699method support. History: This support changes a method to "serialized" on the 700fly if the method generates an AE_ALREADY_EXISTS error, indicating the 701possibility that it cannot handle reentrancy. This fix repairs a couple of 702issues seen in the field, especially on machines with many cores: 703 704 1) Delete method children only upon the exit of the last thread, 705 so as to not delete objects out from under other running threads 706 (and possibly causing a fault.) 707 2) Set the "serialized" bit for the method only upon the exit of the 708 Last thread, so as to not cause deadlock when running threads 709 attempt to exit. 710 3) Cleanup the use of the AML "MethodFlags" and internal method flags 711 so that there is no longer any confusion between the two. 712 713 Lin Ming, Bob Moore. Reported by dana.myers@oracle.com. 714 715Debugger: Now lock the namespace for duration of a namespace dump. Prevents 716issues if the namespace is changing dynamically underneath the debugger. 717Especially affects temporary namespace nodes, since the debugger displays 718these also. 719 720Updated the ordering of include files. The ACPICA headers should appear 721before any compiler-specific headers (stdio.h, etc.) so that acenv.h can set 722any necessary compiler-specific defines, etc. Affects the ACPI-related tools 723and utilities. 724 725Updated all ACPICA copyrights and signons to 2011. Added the 2011 copyright 726to all module headers and signons, including the Linux header. This affects 727virtually every file in the ACPICA core subsystem, iASL compiler, and all 728utilities. 729 730Added project files for MS Visual Studio 2008 (VC++ 9.0). The original 731project files for VC++ 6.0 are now obsolete. New project files can be found 732under acpica/generate/msvc9. See acpica/generate/msvc9/readme.txt for 733details. 734 735Example Code and Data Size: These are the sizes for the OS-independent 736acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 737debug version of the code includes the debug output trace mechanism and has a 738much larger code and data size. 739 740 Previous Release (VC 6.0): 741 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total 742 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total 743 Current Release (VC 9.0): 744 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 745 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 746 7472) iASL Compiler/Disassembler and Tools: 748 749iASL: Added generic data types to the Data Table compiler. Add "generic" data 750types such as UINT32, String, Unicode, etc., to simplify the generation of 751platform-defined tables such as UEFI. Lin Ming. 752 753iASL: Added listing support for the Data Table Compiler. Adds listing support 754(-l) to display actual binary output for each line of input code. 755 756---------------------------------------- 75709 December 2010. Summary of changes for version 20101209: 758 7591) ACPI CA Core Subsystem: 760 761Completed the major overhaul of the GPE support code that was begun in July 7622010. Major features include: removal of _PRW execution in ACPICA (host 763executes _PRWs anyway), cleanup of "wake" GPE interfaces and processing, 764changes to existing interfaces, simplification of GPE handler operation, and 765a handful of new interfaces: 766 767 AcpiUpdateAllGpes 768 AcpiFinishGpe 769 AcpiSetupGpeForWake 770 AcpiSetGpeWakeMask 771 One new file, evxfgpe.c to consolidate all external GPE interfaces. 772 773See the ACPICA Programmer Reference for full details and programming 774information. See the new section 4.4 "General Purpose Event (GPE) Support" 775for a full overview, and section 8.7 "ACPI General Purpose Event Management" 776for programming details. ACPICA BZ 858,870,877. Matthew Garrett, Lin Ming, 777Bob Moore, Rafael Wysocki. 778 779Implemented a new GPE feature for Windows compatibility, the "Implicit Wake 780GPE Notify". This feature will automatically issue a Notify(2) on a device 781when a Wake GPE is received if there is no corresponding GPE method or 782handler. ACPICA BZ 870. 783 784Fixed a problem with the Scope() operator during table parse and load phase. 785During load phase (table load or method execution), the scope operator should 786not enter the target into the namespace. Instead, it should open a new scope 787at the target location. Linux BZ 19462, ACPICA BZ 882. 788 789Example Code and Data Size: These are the sizes for the OS-independent 790acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 791debug version of the code includes the debug output trace mechanism and has a 792much larger code and data size. 793 794 Previous Release: 795 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total 796 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total 797 Current Release: 798 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 799 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 800 8012) iASL Compiler/Disassembler and Tools: 802 803iASL: Relax the alphanumeric restriction on _CID strings. These strings are 804"bus-specific" per the ACPI specification, and therefore any characters are 805acceptable. The only checks that can be performed are for a null string and 806perhaps for a leading asterisk. ACPICA BZ 886. 807 808iASL: Fixed a problem where a syntax error that caused a premature EOF 809condition on the source file emitted a very confusing error message. The 810premature EOF is now detected correctly. ACPICA BZ 891. 811 812Disassembler: Decode the AccessSize within a Generic Address Structure (byte 813access, word access, etc.) Note, this field does not allow arbitrary bit 814access, the size is encoded as 1=byte, 2=word, 3=dword, and 4=qword. 815 816New: AcpiNames utility - Example namespace dump utility. Shows an example of 817ACPICA configuration for a minimal namespace dump utility. Uses table and 818namespace managers, but no AML interpreter. Does not add any functionality 819over AcpiExec, it is a subset of AcpiExec. The purpose is to show how to 820partition and configure ACPICA. ACPICA BZ 883. 821 822AML Debugger: Increased the debugger buffer size for method return objects. 823Was 4K, increased to 16K. Also enhanced error messages for debugger method 824execution, including the buffer overflow case. 825 826---------------------------------------- 82713 October 2010. Summary of changes for version 20101013: 828 8291) ACPI CA Core Subsystem: 830 831Added support to clear the PCIEXP_WAKE event. When clearing ACPI events, now 832clear the PCIEXP_WAKE_STS bit in the ACPI PM1 Status Register, via 833HwClearAcpiStatus. Original change from Colin King. ACPICA BZ 880. 834 835Changed the type of the predefined namespace object _TZ from ThermalZone to 836Device. This was found to be confusing to the host software that processes 837the various thermal zones, since _TZ is not really a ThermalZone. However, a 838Notify() can still be performed on it. ACPICA BZ 876. Suggestion from Rui 839Zhang. 840 841Added Windows Vista SP2 to the list of supported _OSI strings. The actual 842string is "Windows 2006 SP2". 843 844Eliminated duplicate code in AcpiUtExecute* functions. Now that the nsrepair 845code automatically repairs _HID-related strings, this type of code is no 846longer needed in Execute_HID, Execute_CID, and Execute_UID. ACPICA BZ 878. 847 848Example Code and Data Size: These are the sizes for the OS-independent 849acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 850debug version of the code includes the debug output trace mechanism and has a 851much larger code and data size. 852 853 Previous Release: 854 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 855 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 856 Current Release: 857 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 858 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 859 8602) iASL Compiler/Disassembler and Tools: 861 862iASL: Implemented additional compile-time validation for _HID strings. The 863non-hex prefix (such as "PNP" or "ACPI") must be uppercase, and the length of 864the string must be exactly seven or eight characters. For both _HID and _CID 865strings, all characters must be alphanumeric. ACPICA BZ 874. 866 867iASL: Allow certain "null" resource descriptors. Some BIOS code creates 868descriptors that are mostly or all zeros, with the expectation that they will 869be filled in at runtime. iASL now allows this as long as there is a "resource 870tag" (name) associated with the descriptor, which gives the ASL a handle 871needed to modify the descriptor. ACPICA BZ 873. 872 873Added single-thread support to the generic Unix application OSL. Primarily 874for iASL support, this change removes the use of semaphores in the single- 875threaded ACPICA tools/applications - increasing performance. The 876_MULTI_THREADED option was replaced by the (reverse) ACPI_SINGLE_THREADED 877option. ACPICA BZ 879. 878 879AcpiExec: several fixes for the 64-bit version. Adds XSDT support and support 880for 64-bit DSDT/FACS addresses in the FADT. Lin Ming. 881 882iASL: Moved all compiler messages to a new file, aslmessages.h. 883 884---------------------------------------- 88515 September 2010. Summary of changes for version 20100915: 886 8871) ACPI CA Core Subsystem: 888 889Removed the AcpiOsDerivePciId OSL interface. The various host implementations 890of this function were not OS-dependent and are now obsolete and can be 891removed from all host OSLs. This function has been replaced by 892AcpiHwDerivePciId, which is now part of the ACPICA core code. 893AcpiHwDerivePciId has been implemented without recursion. Adds one new 894module, hwpci.c. ACPICA BZ 857. 895 896Implemented a dynamic repair for _HID and _CID strings. The following 897problems are now repaired at runtime: 1) Remove a leading asterisk in the 898string, and 2) the entire string is uppercased. Both repairs are in 899accordance with the ACPI specification and will simplify host driver code. 900ACPICA BZ 871. 901 902The ACPI_THREAD_ID type is no longer configurable, internally it is now 903always UINT64. This simplifies the ACPICA code, especially any printf output. 904UINT64 is the only common data type for all thread_id types across all 905operating systems. It is now up to the host OSL to cast the native thread_id 906type to UINT64 before returning the value to ACPICA (via AcpiOsGetThreadId). 907Lin Ming, Bob Moore. 908 909Added the ACPI_INLINE type to enhance the ACPICA configuration. The "inline" 910keyword is not standard across compilers, and this type allows inline to be 911configured on a per-compiler basis. Lin Ming. 912 913Made the system global AcpiGbl_SystemAwakeAndRunning publically available. 914Added an extern for this boolean in acpixf.h. Some hosts utilize this value 915during suspend/restore operations. ACPICA BZ 869. 916 917All code that implements error/warning messages with the "ACPI:" prefix has 918been moved to a new module, utxferror.c. 919 920The UINT64_OVERLAY was moved to utmath.c, which is the only module where it 921is used. ACPICA BZ 829. Lin Ming, Bob Moore. 922 923Example Code and Data Size: These are the sizes for the OS-independent 924acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 925debug version of the code includes the debug output trace mechanism and has a 926much larger code and data size. 927 928 Previous Release: 929 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total 930 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total 931 Current Release: 932 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 933 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 934 9352) iASL Compiler/Disassembler and Tools: 936 937iASL/Disassembler: Write ACPI errors to stderr instead of the output file. 938This keeps the output files free of random error messages that may originate 939from within the namespace/interpreter code. Used this opportunity to merge 940all ACPI:-style messages into a single new module, utxferror.c. ACPICA BZ 941866. Lin Ming, Bob Moore. 942 943Tools: update some printfs for ansi warnings on size_t. Handle width change 944of size_t on 32-bit versus 64-bit generations. Lin Ming. 945 946---------------------------------------- 94706 August 2010. Summary of changes for version 20100806: 948 9491) ACPI CA Core Subsystem: 950 951Designed and implemented a new host interface to the _OSI support code. This 952will allow the host to dynamically add or remove multiple _OSI strings, as 953well as install an optional handler that is called for each _OSI invocation. 954Also added a new AML debugger command, 'osi' to display and modify the global 955_OSI string table, and test support in the AcpiExec utility. See the ACPICA 956reference manual for full details. Lin Ming, Bob Moore. ACPICA BZ 836. 957New Functions: 958 AcpiInstallInterface - Add an _OSI string. 959 AcpiRemoveInterface - Delete an _OSI string. 960 AcpiInstallInterfaceHandler - Install optional _OSI handler. 961Obsolete Functions: 962 AcpiOsValidateInterface - no longer used. 963New Files: 964 source/components/utilities/utosi.c 965 966Re-introduced the support to enable multi-byte transfers for Embedded 967Controller (EC) operation regions. A reported problem was found to be a bug 968in the host OS, not in the multi-byte support. Previously, the maximum data 969size passed to the EC operation region handler was a single byte. There are 970often EC Fields larger than one byte that need to be transferred, and it is 971useful for the EC driver to lock these as a single transaction. This change 972enables single transfers larger than 8 bits. This effectively changes the 973access to the EC space from ByteAcc to AnyAcc, and will probably require 974changes to the host OS Embedded Controller driver to enable 16/32/64/256-bit 975transfers in addition to 8-bit transfers. Alexey Starikovskiy, Lin Ming. 976 977Fixed a problem with the prototype for AcpiOsReadPciConfiguration. The 978prototype in acpiosxf.h had the output value pointer as a (void *). 979It should be a (UINT64 *). This may affect some host OSL code. 980 981Fixed a couple problems with the recently modified Linux makefiles for iASL 982and AcpiExec. These new makefiles place the generated object files in the 983local directory so that there can be no collisions between the files that are 984shared between them that are compiled with different options. 985 986Example Code and Data Size: These are the sizes for the OS-independent 987acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 988debug version of the code includes the debug output trace mechanism and has a 989much larger code and data size. 990 991 Previous Release: 992 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 993 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total 994 Current Release: 995 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total 996 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total 997 9982) iASL Compiler/Disassembler and Tools: 999 1000iASL/Disassembler: Added a new option (-da, "disassemble all") to load the 1001namespace from and disassemble an entire group of AML files. Useful for 1002loading all of the AML tables for a given machine (DSDT, SSDT1...SSDTn) and 1003disassembling with one simple command. ACPICA BZ 865. Lin Ming. 1004 1005iASL: Allow multiple invocations of -e option. This change allows multiple 1006uses of -e on the command line: "-e ssdt1.dat -e ssdt2.dat". ACPICA BZ 834. 1007Lin Ming. 1008 1009---------------------------------------- 101002 July 2010. Summary of changes for version 20100702: 1011 10121) ACPI CA Core Subsystem: 1013 1014Implemented several updates to the recently added GPE reference count 1015support. The model for "wake" GPEs is changing to give the host OS complete 1016control of these GPEs. Eventually, the ACPICA core will not execute any _PRW 1017methods, since the host already must execute them. Also, additional changes 1018were made to help ensure that the reference counts are kept in proper 1019synchronization with reality. Rafael J. Wysocki. 1020 10211) Ensure that GPEs are not enabled twice during initialization. 10222) Ensure that GPE enable masks stay in sync with the reference count. 10233) Do not inadvertently enable GPEs when writing GPE registers. 10244) Remove the internal wake reference counter and add new AcpiGpeWakeup 1025interface. This interface will set or clear individual GPEs for wakeup. 10265) Remove GpeType argument from AcpiEnable and AcpiDisable. These interfaces 1027are now used for "runtime" GPEs only. 1028 1029Changed the behavior of the GPE install/remove handler interfaces. The GPE is 1030no longer disabled during this process, as it was found to cause problems on 1031some machines. Rafael J. Wysocki. 1032 1033Reverted a change introduced in version 20100528 to enable Embedded 1034Controller multi-byte transfers. This change was found to cause problems with 1035Index Fields and possibly Bank Fields. It will be reintroduced when these 1036problems have been resolved. 1037 1038Fixed a problem with references to Alias objects within Package Objects. A 1039reference to an Alias within the definition of a Package was not always 1040resolved properly. Aliases to objects like Processors, Thermal zones, etc. 1041were resolved to the actual object instead of a reference to the object as it 1042should be. Package objects are only allowed to contain integer, string, 1043buffer, package, and reference objects. Redhat bugzilla 608648. 1044 1045Example Code and Data Size: These are the sizes for the OS-independent 1046acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1047debug version of the code includes the debug output trace mechanism and has a 1048much larger code and data size. 1049 1050 Previous Release: 1051 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 1052 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total 1053 Current Release: 1054 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 1055 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total 1056 10572) iASL Compiler/Disassembler and Tools: 1058 1059iASL: Implemented a new compiler subsystem to allow definition and 1060compilation of the non-AML ACPI tables such as FADT, MADT, SRAT, etc. These 1061are called "ACPI Data Tables", and the new compiler is the "Data Table 1062Compiler". This compiler is intended to simplify the existing error-prone 1063process of creating these tables for the BIOS, as well as allowing the 1064disassembly, modification, recompilation, and override of existing ACPI data 1065tables. See the iASL User Guide for detailed information. 1066 1067iASL: Implemented a new Template Generator option in support of the new Data 1068Table Compiler. This option will create examples of all known ACPI tables 1069that can be used as the basis for table development. See the iASL 1070documentation and the -T option. 1071 1072Disassembler and headers: Added support for the WDDT ACPI table (Watchdog 1073Descriptor Table). 1074 1075Updated the Linux makefiles for iASL and AcpiExec to place the generated 1076object files in the local directory so that there can be no collisions 1077between the shared files between them that are generated with different 1078options. 1079 1080Added support for Mac OS X in the Unix OSL used for iASL and AcpiExec. Use 1081the #define __APPLE__ to enable this support. 1082 1083---------------------------------------- 108428 May 2010. Summary of changes for version 20100528: 1085 1086Note: The ACPI 4.0a specification was released on April 5, 2010 and is 1087available at www.acpi.info. This is primarily an errata release. 1088 10891) ACPI CA Core Subsystem: 1090 1091Undefined ACPI tables: We are looking for the definitions for the following 1092ACPI tables that have been seen in the field: ATKG, IEIT, GSCI. 1093 1094Implemented support to enable multi-byte transfers for Embedded Controller 1095(EC) operation regions. Previously, the maximum data size passed to the EC 1096operation region handler was a single byte. There are often EC Fields larger 1097than one byte that need to be transferred, and it is useful for the EC driver 1098to lock these as a single transaction. This change enables single transfers 1099larger than 8 bits. This effectively changes the access to the EC space from 1100ByteAcc to AnyAcc, and will probably require changes to the host OS Embedded 1101Controller driver to enable 16/32/64/256-bit transfers in addition to 8-bit 1102transfers. Alexey Starikovskiy, Lin Ming 1103 1104Implemented a performance enhancement for namespace search and access. This 1105change enhances the performance of namespace searches and walks by adding a 1106backpointer to the parent in each namespace node. On large namespaces, this 1107change can improve overall ACPI performance by up to 9X. Adding a pointer to 1108each namespace node increases the overall size of the internal namespace by 1109about 5%, since each namespace entry usually consists of both a namespace 1110node and an ACPI operand object. However, this is the first growth of the 1111namespace in ten years. ACPICA bugzilla 817. Alexey Starikovskiy. 1112 1113Implemented a performance optimization that reduces the number of namespace 1114walks. On control method exit, only walk the namespace if the method is known 1115to have created namespace objects outside of its local scope. Previously, the 1116entire namespace was traversed on each control method exit. This change can 1117improve overall ACPI performance by up to 3X. Alexey Starikovskiy, Bob Moore. 1118 1119Added support to truncate I/O addresses to 16 bits for Windows compatibility. 1120Some ASL code has been seen in the field that inadvertently has bits set 1121above bit 15. This feature is optional and is enabled if the BIOS requests 1122any Windows OSI strings. It can also be enabled by the host OS. Matthew 1123Garrett, Bob Moore. 1124 1125Added support to limit the maximum time for the ASL Sleep() operator. To 1126prevent accidental deep sleeps, limit the maximum time that Sleep() will 1127actually sleep. Configurable, the default maximum is two seconds. ACPICA 1128bugzilla 854. 1129 1130Added run-time validation support for the _WDG and_WED Microsoft predefined 1131methods. These objects are defined by "Windows Instrumentation", and are not 1132part of the ACPI spec. ACPICA BZ 860. 1133 1134Expanded all statistic counters used during namespace and device 1135initialization from 16 to 32 bits in order to support very large namespaces. 1136 1137Replaced all instances of %d in printf format specifiers with %u since nearly 1138all integers in ACPICA are unsigned. 1139 1140Fixed the exception namestring for AE_WAKE_ONLY_GPE. Was incorrectly returned 1141as AE_NO_HANDLER. 1142 1143Example Code and Data Size: These are the sizes for the OS-independent 1144acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1145debug version of the code includes the debug output trace mechanism and has a 1146much larger code and data size. 1147 1148 Previous Release: 1149 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total 1150 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total 1151 Current Release: 1152 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 1153 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total 1154 11552) iASL Compiler/Disassembler and Tools: 1156 1157iASL: Added compiler support for the _WDG and_WED Microsoft predefined 1158methods. These objects are defined by "Windows Instrumentation", and are not 1159part of the ACPI spec. ACPICA BZ 860. 1160 1161AcpiExec: added option to disable the memory tracking mechanism. The -dt 1162option will disable the tracking mechanism, which improves performance 1163considerably. 1164 1165AcpiExec: Restructured the command line options into -d (disable) and -e 1166(enable) options. 1167 1168---------------------------------------- 116928 April 2010. Summary of changes for version 20100428: 1170 11711) ACPI CA Core Subsystem: 1172 1173Implemented GPE support for dynamically loaded ACPI tables. For all GPEs, 1174including FADT-based and GPE Block Devices, execute any _PRW methods in the 1175new table, and process any _Lxx/_Exx GPE methods in the new table. Any 1176runtime GPE that is referenced by an _Lxx/_Exx method in the new table is 1177immediately enabled. Handles the FADT-defined GPEs as well as GPE Block 1178Devices. Provides compatibility with other ACPI implementations. Two new 1179files added, evgpeinit.c and evgpeutil.c. ACPICA BZ 833. Lin Ming, Bob Moore. 1180 1181Fixed a regression introduced in version 20100331 within the table manager 1182where initial table loading could fail. This was introduced in the fix for 1183AcpiReallocateRootTable. Also, renamed some of fields in the table manager 1184data structures to clarify their meaning and use. 1185 1186Fixed a possible allocation overrun during internal object copy in 1187AcpiUtCopySimpleObject. The original code did not correctly handle the case 1188where the object to be copied was a namespace node. Lin Ming. ACPICA BZ 847. 1189 1190Updated the allocation dump routine, AcpiUtDumpAllocation and fixed a 1191possible access beyond end-of-allocation. Also, now fully validate descriptor 1192(size and type) before output. Lin Ming, Bob Moore. ACPICA BZ 847 1193 1194Example Code and Data Size: These are the sizes for the OS-independent 1195acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1196debug version of the code includes the debug output trace mechanism and has a 1197much larger code and data size. 1198 1199 Previous Release: 1200 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total 1201 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total 1202 Current Release: 1203 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total 1204 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total 1205 12062) iASL Compiler/Disassembler and Tools: 1207 1208iASL: Implemented Min/Max/Len/Gran validation for address resource 1209descriptors. This change implements validation for the address fields that 1210are common to all address-type resource descriptors. These checks are 1211implemented: Checks for valid Min/Max, length within the Min/Max window, 1212valid granularity, Min/Max a multiple of granularity, and _MIF/_MAF as per 1213table 6-40 in the ACPI 4.0a specification. Also split the large aslrestype1.c 1214and aslrestype2.c files into five new files. ACPICA BZ 840. 1215 1216iASL: Added support for the _Wxx predefined names. This support was missing 1217and these names were not recognized by the compiler as valid predefined 1218names. ACPICA BZ 851. 1219 1220iASL: Added an error for all predefined names that are defined to return no 1221value and thus must be implemented as Control Methods. These include all of 1222the _Lxx, _Exx, _Wxx, and _Qxx names, as well as some other miscellaneous 1223names such as _DIS, _INI, _IRC, _OFF, _ON, and _PSx. ACPICA BZ 850, 856. 1224 1225iASL: Implemented the -ts option to emit hex AML data in ASL format, as an 1226ASL Buffer. Allows ACPI tables to be easily included within ASL files, to be 1227dynamically loaded via the Load() operator. Also cleaned up output for the - 1228ta and -tc options. ACPICA BZ 853. 1229 1230Tests: Added a new file with examples of extended iASL error checking. 1231Demonstrates the advanced error checking ability of the iASL compiler. 1232Available at tests/misc/badcode.asl. 1233 1234---------------------------------------- 123531 March 2010. Summary of changes for version 20100331: 1236 12371) ACPI CA Core Subsystem: 1238 1239Completed a major update for the GPE support in order to improve support for 1240shared GPEs and to simplify both host OS and ACPICA code. Added a reference 1241count mechanism to support shared GPEs that require multiple device drivers. 1242Several external interfaces have changed. One external interface has been 1243removed. One new external interface was added. Most of the GPE external 1244interfaces now use the GPE spinlock instead of the events mutex (and the 1245Flags parameter for many GPE interfaces has been removed.) See the updated 1246ACPICA Programmer Reference for details. Matthew Garrett, Bob Moore, Rafael 1247Wysocki. ACPICA BZ 831. 1248 1249Changed: 1250 AcpiEnableGpe, AcpiDisableGpe, AcpiClearGpe, AcpiGetGpeStatus 1251Removed: 1252 AcpiSetGpeType 1253New: 1254 AcpiSetGpe 1255 1256Implemented write support for DataTable operation regions. These regions are 1257defined via the DataTableRegion() operator. Previously, only read support was 1258implemented. The ACPI specification allows DataTableRegions to be read/write, 1259however. 1260 1261Implemented a new subsystem option to force a copy of the DSDT to local 1262memory. Optionally copy the entire DSDT to local memory (instead of simply 1263mapping it.) There are some (albeit very rare) BIOSs that corrupt or replace 1264the original DSDT, creating the need for this option. Default is FALSE, do 1265not copy the DSDT. 1266 1267Implemented detection of a corrupted or replaced DSDT. This change adds 1268support to detect a DSDT that has been corrupted and/or replaced from outside 1269the OS (by firmware). This is typically catastrophic for the system, but has 1270been seen on some machines. Once this problem has been detected, the DSDT 1271copy option can be enabled via system configuration. Lin Ming, Bob Moore. 1272 1273Fixed two problems with AcpiReallocateRootTable during the root table copy. 1274When copying the root table to the new allocation, the length used was 1275incorrect. The new size was used instead of the current table size, meaning 1276too much data was copied. Also, the count of available slots for ACPI tables 1277was not set correctly. Alexey Starikovskiy, Bob Moore. 1278 1279Example Code and Data Size: These are the sizes for the OS-independent 1280acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1281debug version of the code includes the debug output trace mechanism and has a 1282much larger code and data size. 1283 1284 Previous Release: 1285 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total 1286 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total 1287 Current Release: 1288 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total 1289 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total 1290 12912) iASL Compiler/Disassembler and Tools: 1292 1293iASL: Implement limited typechecking for values returned from predefined 1294control methods. The type of any returned static (unnamed) object is now 1295validated. For example, Return(1). ACPICA BZ 786. 1296 1297iASL: Fixed a predefined name object verification regression. Fixes a problem 1298introduced in version 20100304. An error is incorrectly generated if a 1299predefined name is declared as a static named object with a value defined 1300using the keywords "Zero", "One", or "Ones". Lin Ming. 1301 1302iASL: Added Windows 7 support for the -g option (get local ACPI tables) by 1303reducing the requested registry access rights. ACPICA BZ 842. 1304 1305Disassembler: fixed a possible fault when generating External() statements. 1306Introduced in commit ae7d6fd: Properly handle externals with parent-prefix 1307(carat). Fixes a string length allocation calculation. Lin Ming. 1308 1309---------------------------------------- 131004 March 2010. Summary of changes for version 20100304: 1311 13121) ACPI CA Core Subsystem: 1313 1314Fixed a possible problem with the AML Mutex handling function 1315AcpiExReleaseMutex where the function could fault under the very rare 1316condition when the interpreter has blocked, the interpreter lock is released, 1317the interpreter is then reentered via the same thread, and attempts to 1318acquire an AML mutex that was previously acquired. FreeBSD report 140979. Lin 1319Ming. 1320 1321Implemented additional configuration support for the AML "Debug Object". 1322Output from the debug object can now be enabled via a global variable, 1323AcpiGbl_EnableAmlDebugObject. This will assist with remote machine debugging. 1324This debug output is now available in the release version of ACPICA instead 1325of just the debug version. Also, the entire debug output module can now be 1326configured out of the ACPICA build if desired. One new file added, 1327executer/exdebug.c. Lin Ming, Bob Moore. 1328 1329Added header support for the ACPI MCHI table (Management Controller Host 1330Interface Table). This table was added in ACPI 4.0, but the defining document 1331has only recently become available. 1332 1333Standardized output of integer values for ACPICA warnings/errors. Always use 13340x prefix for hex output, always use %u for unsigned integer decimal output. 1335Affects ACPI_INFO, ACPI_ERROR, ACPI_EXCEPTION, and ACPI_WARNING (about 400 1336invocations.) These invocations were converted from the original 1337ACPI_DEBUG_PRINT invocations and were not consistent. ACPICA BZ 835. 1338 1339Example Code and Data Size: These are the sizes for the OS-independent 1340acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1341debug version of the code includes the debug output trace mechanism and has a 1342much larger code and data size. 1343 1344 Previous Release: 1345 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total 1346 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total 1347 Current Release: 1348 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total 1349 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total 1350 13512) iASL Compiler/Disassembler and Tools: 1352 1353iASL: Implemented typechecking support for static (non-control method) 1354predefined named objects that are declared with the Name() operator. For 1355example, the type of this object is now validated to be of type Integer: 1356Name(_BBN, 1). This change migrates the compiler to using the core predefined 1357name table instead of maintaining a local version. Added a new file, 1358aslpredef.c. ACPICA BZ 832. 1359 1360Disassembler: Added support for the ACPI 4.0 MCHI table. 1361 1362---------------------------------------- 136321 January 2010. Summary of changes for version 20100121: 1364 13651) ACPI CA Core Subsystem: 1366 1367Added the 2010 copyright to all module headers and signons. This affects 1368virtually every file in the ACPICA core subsystem, the iASL compiler, the 1369tools/utilities, and the test suites. 1370 1371Implemented a change to the AcpiGetDevices interface to eliminate unnecessary 1372invocations of the _STA method. In the case where a specific _HID is 1373requested, do not run _STA until a _HID match is found. This eliminates 1374potentially dozens of _STA calls during a search for a particular device/HID, 1375which in turn can improve boot times. ACPICA BZ 828. Lin Ming. 1376 1377Implemented an additional repair for predefined method return values. Attempt 1378to repair unexpected NULL elements within returned Package objects. Create an 1379Integer of value zero, a NULL String, or a zero-length Buffer as appropriate. 1380ACPICA BZ 818. Lin Ming, Bob Moore. 1381 1382Removed the obsolete ACPI_INTEGER data type. This type was introduced as the 1383code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0 (with 138464-bit AML integers). It is now obsolete and this change removes it from the 1385ACPICA code base, replaced by UINT64. The original typedef has been retained 1386for now for compatibility with existing device driver code. ACPICA BZ 824. 1387 1388Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field in 1389the parse tree object. 1390 1391Added additional warning options for the gcc-4 generation. Updated the source 1392accordingly. This includes some code restructuring to eliminate unreachable 1393code, elimination of some gotos, elimination of unused return values, some 1394additional casting, and removal of redundant declarations. 1395 1396Example Code and Data Size: These are the sizes for the OS-independent 1397acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1398debug version of the code includes the debug output trace mechanism and has a 1399much larger code and data size. 1400 1401 Previous Release: 1402 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 1403 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 1404 Current Release: 1405 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total 1406 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total 1407 14082) iASL Compiler/Disassembler and Tools: 1409 1410No functional changes for this release. 1411 1412---------------------------------------- 141314 December 2009. Summary of changes for version 20091214: 1414 14151) ACPI CA Core Subsystem: 1416 1417Enhanced automatic data type conversions for predefined name repairs. This 1418change expands the automatic repairs/conversions for predefined name return 1419values to make Integers, Strings, and Buffers fully interchangeable. Also, a 1420Buffer can be converted to a Package of Integers if necessary. The nsrepair.c 1421module was completely restructured. Lin Ming, Bob Moore. 1422 1423Implemented automatic removal of null package elements during predefined name 1424repairs. This change will automatically remove embedded and trailing NULL 1425package elements from returned package objects that are defined to contain a 1426variable number of sub-packages. The driver is then presented with a package 1427with no null elements to deal with. ACPICA BZ 819. 1428 1429Implemented a repair for the predefined _FDE and _GTM names. The expected 1430return value for both names is a Buffer of 5 DWORDs. This repair fixes two 1431possible problems (both seen in the field), where a package of integers is 1432returned, or a buffer of BYTEs is returned. With assistance from Jung-uk Kim. 1433 1434Implemented additional module-level code support. This change will properly 1435execute module-level code that is not at the root of the namespace (under a 1436Device object, etc.). Now executes the code within the current scope instead 1437of the root. ACPICA BZ 762. Lin Ming. 1438 1439Fixed possible mutex acquisition errors when running _REG methods. Fixes a 1440problem where mutex errors can occur when running a _REG method that is in 1441the same scope as a method-defined operation region or an operation region 1442under a module-level IF block. This type of code is rare, so the problem has 1443not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore. 1444 1445Fixed a possible memory leak during module-level code execution. An object 1446could be leaked for each block of executed module-level code if the 1447interpreter slack mode is enabled This change deletes any implicitly returned 1448object from the module-level code block. Lin Ming. 1449 1450Removed messages for successful predefined repair(s). The repair mechanism 1451was considered too wordy. Now, messages are only unconditionally emitted if 1452the return object cannot be repaired. Existing messages for successful 1453repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ 827. 1454 1455Example Code and Data Size: These are the sizes for the OS-independent 1456acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1457debug version of the code includes the debug output trace mechanism and has a 1458much larger code and data size. 1459 1460 Previous Release: 1461 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 1462 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 1463 Current Release: 1464 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 1465 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 1466 14672) iASL Compiler/Disassembler and Tools: 1468 1469iASL: Fixed a regression introduced in 20091112 where intermediate .SRC files 1470were no longer automatically removed at the termination of the compile. 1471 1472acpiexec: Implemented the -f option to specify default region fill value. 1473This option specifies the value used to initialize buffers that simulate 1474operation regions. Default value is zero. Useful for debugging problems that 1475depend on a specific initial value for a region or field. 1476 1477---------------------------------------- 147812 November 2009. Summary of changes for version 20091112: 1479 14801) ACPI CA Core Subsystem: 1481 1482Implemented a post-order callback to AcpiWalkNamespace. The existing 1483interface only has a pre-order callback. This change adds an additional 1484parameter for a post-order callback which will be more useful for bus scans. 1485ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference. 1486 1487Modified the behavior of the operation region memory mapping cache for 1488SystemMemory. Ensure that the memory mappings created for operation regions 1489do not cross 4K page boundaries. Crossing a page boundary while mapping 1490regions can cause kernel warnings on some hosts if the pages have different 1491attributes. Such regions are probably BIOS bugs, and this is the workaround. 1492Linux BZ 14445. Lin Ming. 1493 1494Implemented an automatic repair for predefined methods that must return 1495sorted lists. This change will repair (by sorting) packages returned by _ALR, 1496_PSS, and _TSS. Drivers can now assume that the packages are correctly sorted 1497and do not contain NULL package elements. Adds one new file, 1498namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore. 1499 1500Fixed a possible fault during predefined name validation if a return Package 1501object contains NULL elements. Also adds a warning if a NULL element is 1502followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement may 1503include repair or removal of all such NULL elements where possible. 1504 1505Implemented additional module-level executable AML code support. This change 1506will execute module-level code that is not at the root of the namespace 1507(under a Device object, etc.) at table load time. Module-level executable AML 1508code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming. 1509 1510Implemented a new internal function to create Integer objects. This function 1511simplifies miscellaneous object creation code. ACPICA BZ 823. 1512 1513Reduced the severity of predefined repair messages, Warning to Info. Since 1514the object was successfully repaired, a warning is too severe. Reduced to an 1515info message for now. These messages may eventually be changed to debug-only. 1516ACPICA BZ 812. 1517 1518Example Code and Data Size: These are the sizes for the OS-independent 1519acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1520debug version of the code includes the debug output trace mechanism and has a 1521much larger code and data size. 1522 1523 Previous Release: 1524 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 1525 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 1526 Current Release: 1527 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 1528 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 1529 15302) iASL Compiler/Disassembler and Tools: 1531 1532iASL: Implemented Switch() with While(1) so that Break works correctly. This 1533change correctly implements the Switch operator with a surrounding While(1) 1534so that the Break operator works as expected. ACPICA BZ 461. Lin Ming. 1535 1536iASL: Added a message if a package initializer list is shorter than package 1537length. Adds a new remark for a Package() declaration if an initializer list 1538exists, but is shorter than the declared length of the package. Although 1539technically legal, this is probably a coding error and it is seen in the 1540field. ACPICA BZ 815. Lin Ming, Bob Moore. 1541 1542iASL: Fixed a problem where the compiler could fault after the maximum number 1543of errors was reached (200). 1544 1545acpixtract: Fixed a possible warning for pointer cast if the compiler warning 1546level set very high. 1547 1548---------------------------------------- 154913 October 2009. Summary of changes for version 20091013: 1550 15511) ACPI CA Core Subsystem: 1552 1553Fixed a problem where an Operation Region _REG method could be executed more 1554than once. If a custom address space handler is installed by the host before 1555the "initialize operation regions" phase of the ACPICA initialization, any 1556_REG methods for that address space could be executed twice. This change 1557fixes the problem. ACPICA BZ 427. Lin Ming. 1558 1559Fixed a possible memory leak for the Scope() ASL operator. When the exact 1560invocation of "Scope(\)" is executed (change scope to root), one internal 1561operand object was leaked. Lin Ming. 1562 1563Implemented a run-time repair for the _MAT predefined method. If the _MAT 1564return value is defined as a Field object in the AML, and the field 1565size is less than or equal to the default width of an integer (32 or 64),_MAT 1566can incorrectly return an Integer instead of a Buffer. ACPICA now 1567automatically repairs this problem. ACPICA BZ 810. 1568 1569Implemented a run-time repair for the _BIF and _BIX predefined methods. The 1570"OEM Information" field is often incorrectly returned as an Integer with 1571value zero if the field is not supported by the platform. This is due to an 1572ambiguity in the ACPI specification. The field should always be a string. 1573ACPICA now automatically repairs this problem by returning a NULL string 1574within the returned Package. ACPICA BZ 807. 1575 1576Example Code and Data Size: These are the sizes for the OS-independent 1577acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1578debug version of the code includes the debug output trace mechanism and has a 1579much larger code and data size. 1580 1581 Previous Release: 1582 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 1583 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 1584 Current Release: 1585 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 1586 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 1587 15882) iASL Compiler/Disassembler and Tools: 1589 1590Disassembler: Fixed a problem where references to external symbols that 1591contained one or more parent-prefixes (carats) were not handled correctly, 1592possibly causing a fault. ACPICA BZ 806. Lin Ming. 1593 1594Disassembler: Restructured the code so that all functions that handle 1595external symbols are in a single module. One new file is added, 1596common/dmextern.c. 1597 1598AML Debugger: Added a max count argument for the Batch command (which 1599executes multiple predefined methods within the namespace.) 1600 1601iASL: Updated the compiler documentation (User Reference.) Available at 1602http://www.acpica.org/documentation/. ACPICA BZ 750. 1603 1604AcpiXtract: Updated for Lint and other formatting changes. Close all open 1605files. 1606 1607---------------------------------------- 160803 September 2009. Summary of changes for version 20090903: 1609 16101) ACPI CA Core Subsystem: 1611 1612For Windows Vista compatibility, added the automatic execution of an _INI 1613method located at the namespace root (\_INI). This method is executed at 1614table load time. This support is in addition to the automatic execution of 1615\_SB._INI. Lin Ming. 1616 1617Fixed a possible memory leak in the interpreter for AML package objects if 1618the package initializer list is longer than the defined size of the package. 1619This apparently can only happen if the BIOS changes the package size on the 1620fly (seen in a _PSS object), as ASL compilers do not allow this. The 1621interpreter will truncate the package to the defined size (and issue an error 1622message), but previously could leave the extra objects undeleted if they were 1623pre-created during the argument processing (such is the case if the package 1624consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805. 1625 1626Fixed a problem seen when a Buffer or String is stored to itself via ASL. 1627This has been reported in the field. Previously, ACPICA would zero out the 1628buffer/string. Now, the operation is treated as a noop. Provides Windows 1629compatibility. ACPICA BZ 803. Lin Ming. 1630 1631Removed an extraneous error message for ASL constructs of the form 1632Store(LocalX,LocalX) when LocalX is uninitialized. These curious statements 1633are seen in many BIOSs and are once again treated as NOOPs and no error is 1634emitted when they are encountered. ACPICA BZ 785. 1635 1636Fixed an extraneous warning message if a _DSM reserved method returns a 1637Package object. _DSM can return any type of object, so validation on the 1638return type cannot be performed. ACPICA BZ 802. 1639 1640Example Code and Data Size: These are the sizes for the OS-independent 1641acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1642debug version of the code includes the debug output trace mechanism and has a 1643much larger code and data size. 1644 1645 Previous Release: 1646 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 1647 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 1648 Current Release: 1649 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 1650 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 1651 16522) iASL Compiler/Disassembler and Tools: 1653 1654iASL: Fixed a problem with the use of the Alias operator and Resource 1655Templates. The correct alias is now constructed and no error is emitted. 1656ACPICA BZ 738. 1657 1658iASL: Implemented the -I option to specify additional search directories for 1659include files. Allows multiple additional search paths for include files. 1660Directories are searched in the order specified on the command line (after 1661the local directory is searched.) ACPICA BZ 800. 1662 1663iASL: Fixed a problem where the full pathname for include files was not 1664emitted for warnings/errors. This caused the IDE support to not work 1665properly. ACPICA BZ 765. 1666 1667iASL: Implemented the -@ option to specify a Windows-style response file 1668containing additional command line options. ACPICA BZ 801. 1669 1670AcpiExec: Added support to load multiple AML files simultaneously (such as a 1671DSDT and multiple SSDTs). Also added support for wildcards within the AML 1672pathname. These features allow all machine tables to be easily loaded and 1673debugged together. ACPICA BZ 804. 1674 1675Disassembler: Added missing support for disassembly of HEST table Error Bank 1676subtables. 1677 1678---------------------------------------- 167930 July 2009. Summary of changes for version 20090730: 1680 1681The ACPI 4.0 implementation for ACPICA is complete with this release. 1682 16831) ACPI CA Core Subsystem: 1684 1685ACPI 4.0: Added header file support for all new and changed ACPI tables. 1686Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are new 1687for ACPI 4.0, but have previously been supported in ACPICA are: CPEP, BERT, 1688EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT. There 1689have been some ACPI 4.0 changes to other existing tables. Split the large 1690actbl1.h header into the existing actbl2.h header. ACPICA BZ 774. 1691 1692ACPI 4.0: Implemented predefined name validation for all new names. There are 169331 new names in ACPI 4.0. The predefined validation module was split into two 1694files. The new file is namespace/nsrepair.c. ACPICA BZ 770. 1695 1696Implemented support for so-called "module-level executable code". This is 1697executable AML code that exists outside of any control method and is intended 1698to be executed at table load time. Although illegal since ACPI 2.0, this type 1699of code still exists and is apparently still being created. Blocks of this 1700code are now detected and executed as intended. Currently, the code blocks 1701must exist under either an If, Else, or While construct; these are the 1702typical cases seen in the field. ACPICA BZ 762. Lin Ming. 1703 1704Implemented an automatic dynamic repair for predefined names that return 1705nested Package objects. This applies to predefined names that are defined to 1706return a variable-length Package of sub-packages. If the number of sub- 1707packages is one, BIOS code is occasionally seen that creates a simple single 1708package with no sub-packages. This code attempts to fix the problem by 1709wrapping a new package object around the existing package. These methods can 1710be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA BZ 1711790. 1712 1713Fixed a regression introduced in 20090625 for the AcpiGetDevices interface. 1714The _HID/_CID matching was broken and no longer matched IDs correctly. ACPICA 1715BZ 793. 1716 1717Fixed a problem with AcpiReset where the reset would silently fail if the 1718register was one of the protected I/O ports. AcpiReset now bypasses the port 1719validation mechanism. This may eventually be driven into the AcpiRead/Write 1720interfaces. 1721 1722Fixed a regression related to the recent update of the AcpiRead/Write 1723interfaces. A sleep/suspend could fail if the optional PM2 Control register 1724does not exist during an attempt to write the Bus Master Arbitration bit. 1725(However, some hosts already delete the code that writes this bit, and the 1726code may in fact be obsolete at this date.) ACPICA BZ 799. 1727 1728Fixed a problem where AcpiTerminate could fault if inadvertently called twice 1729in succession. ACPICA BZ 795. 1730 1731Example Code and Data Size: These are the sizes for the OS-independent 1732acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1733debug version of the code includes the debug output trace mechanism and has a 1734much larger code and data size. 1735 1736 Previous Release: 1737 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 1738 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 1739 Current Release: 1740 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 1741 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 1742 17432) iASL Compiler/Disassembler and Tools: 1744 1745ACPI 4.0: Implemented disassembler support for all new ACPI tables and 1746changes to existing tables. ACPICA BZ 775. 1747 1748---------------------------------------- 174925 June 2009. Summary of changes for version 20090625: 1750 1751The ACPI 4.0 Specification was released on June 16 and is available at 1752www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will 1753continue for the next few releases. 1754 17551) ACPI CA Core Subsystem: 1756 1757ACPI 4.0: Implemented interpreter support for the IPMI operation region 1758address space. Includes support for bi-directional data buffers and an IPMI 1759address space handler (to be installed by an IPMI device driver.) ACPICA BZ 1760773. Lin Ming. 1761 1762ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT. Includes 1763support in both the header files and the disassembler. 1764 1765Completed a major update for the AcpiGetObjectInfo external interface. 1766Changes include: 1767 - Support for variable, unlimited length HID, UID, and CID strings. 1768 - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA, etc.) 1769 - Call the _SxW power methods on behalf of a device object. 1770 - Determine if a device is a PCI root bridge. 1771 - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO. 1772These changes will require an update to all callers of this interface. See 1773the updated ACPICA Programmer Reference for details. One new source file has 1774been added - utilities/utids.c. ACPICA BZ 368, 780. 1775 1776Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit 1777transfers. The Value parameter has been extended from 32 bits to 64 bits in 1778order to support new ACPI 4.0 tables. These changes will require an update to 1779all callers of these interfaces. See the ACPICA Programmer Reference for 1780details. ACPICA BZ 768. 1781 1782Fixed several problems with AcpiAttachData. The handler was not invoked when 1783the host node was deleted. The data sub-object was not automatically deleted 1784when the host node was deleted. The interface to the handler had an unused 1785parameter, this was removed. ACPICA BZ 778. 1786 1787Enhanced the function that dumps ACPI table headers. All non-printable 1788characters in the string fields are now replaced with '?' (Signature, OemId, 1789OemTableId, and CompilerId.) ACPI tables with non-printable characters in 1790these fields are occasionally seen in the field. ACPICA BZ 788. 1791 1792Fixed a problem with predefined method repair code where the code that 1793attempts to repair/convert an object of incorrect type is only executed on 1794the first time the predefined method is called. The mechanism that disables 1795warnings on subsequent calls was interfering with the repair mechanism. 1796ACPICA BZ 781. 1797 1798Fixed a possible memory leak in the predefined validation/repair code when a 1799buffer is automatically converted to an expected string object. 1800 1801Removed obsolete 16-bit files from the distribution and from the current git 1802tree head. ACPICA BZ 776. 1803 1804Example Code and Data Size: These are the sizes for the OS-independent 1805acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1806debug version of the code includes the debug output trace mechanism and has a 1807much larger code and data size. 1808 1809 Previous Release: 1810 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 1811 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 1812 Current Release: 1813 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 1814 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 1815 18162) iASL Compiler/Disassembler and Tools: 1817 1818ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI 1819operation region keyword. ACPICA BZ 771, 772. Lin Ming. 1820 1821ACPI 4.0: iASL - implemented compile-time validation support for all new 1822predefined names and control methods (31 total). ACPICA BZ 769. 1823 1824---------------------------------------- 182521 May 2009. Summary of changes for version 20090521: 1826 18271) ACPI CA Core Subsystem: 1828 1829Disabled the preservation of the SCI enable bit in the PM1 control register. 1830The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification to be 1831a "preserved" bit - "OSPM always preserves this bit position", section 18324.7.3.2.1. However, some machines fail if this bit is in fact preserved 1833because the bit needs to be explicitly set by the OS as a workaround. No 1834machines fail if the bit is not preserved. Therefore, ACPICA no longer 1835attempts to preserve this bit. 1836 1837Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or 1838incorrectly formed _PRT package could cause a fault. Added validation to 1839ensure that each package element is actually a sub-package. 1840 1841Implemented a new interface to install or override a single control method, 1842AcpiInstallMethod. This interface is useful when debugging in order to repair 1843an existing method or to install a missing method without having to override 1844the entire ACPI table. See the ACPICA Programmer Reference for use and 1845examples. Lin Ming, Bob Moore. 1846 1847Fixed several reference count issues with the DdbHandle object that is 1848created from a Load or LoadTable operator. Prevent premature deletion of the 1849object. Also, mark the object as invalid once the table has been unloaded. 1850This is needed because the handle itself may not be deleted after the table 1851unload, depending on whether it has been stored in a named object by the 1852caller. Lin Ming. 1853 1854Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple 1855mutexes of the same sync level are acquired but then not released in strict 1856opposite order, the internally maintained Current Sync Level becomes confused 1857and can cause subsequent execution errors. ACPICA BZ 471. 1858 1859Changed the allowable release order for ASL mutex objects. The ACPI 4.0 1860specification has been changed to make the SyncLevel for mutex objects more 1861useful. When releasing a mutex, the SyncLevel of the mutex must now be the 1862same as the current sync level. This makes more sense than the previous rule 1863(SyncLevel less than or equal). This change updates the code to match the 1864specification. 1865 1866Fixed a problem with the local version of the AcpiOsPurgeCache function. The 1867(local) cache must be locked during all cache object deletions. Andrew 1868Baumann. 1869 1870Updated the Load operator to use operation region interfaces. This replaces 1871direct memory mapping with region access calls. Now, all region accesses go 1872through the installed region handler as they should. 1873 1874Simplified and optimized the NsGetNextNode function. Reduced parameter count 1875and reduced code for this frequently used function. 1876 1877Example Code and Data Size: These are the sizes for the OS-independent 1878acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1879debug version of the code includes the debug output trace mechanism and has a 1880much larger code and data size. 1881 1882 Previous Release: 1883 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 1884 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 1885 Current Release: 1886 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 1887 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 1888 18892) iASL Compiler/Disassembler and Tools: 1890 1891Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some problems 1892with sub-table disassembly and handling invalid sub-tables. Attempt recovery 1893after an invalid sub-table ID. 1894 1895---------------------------------------- 189622 April 2009. Summary of changes for version 20090422: 1897 18981) ACPI CA Core Subsystem: 1899 1900Fixed a compatibility issue with the recently released I/O port protection 1901mechanism. For windows compatibility, 1) On a port protection violation, 1902simply ignore the request and do not return an exception (allow the control 1903method to continue execution.) 2) If only part of the request overlaps a 1904protected port, read/write the individual ports that are not protected. Linux 1905BZ 13036. Lin Ming 1906 1907Enhanced the execution of the ASL/AML BreakPoint operator so that it actually 1908breaks into the AML debugger if the debugger is present. This matches the 1909ACPI-defined behavior. 1910 1911Fixed several possible warnings related to the use of the configurable 1912ACPI_THREAD_ID. This type can now be configured as either an integer or a 1913pointer with no warnings. Also fixes several warnings in printf-like 1914statements for the 64-bit build when the type is configured as a pointer. 1915ACPICA BZ 766, 767. 1916 1917Fixed a number of possible warnings when compiling with gcc 4+ (depending on 1918warning options.) Examples include printf formats, aliasing, unused globals, 1919missing prototypes, missing switch default statements, use of non-ANSI 1920library functions, use of non-ANSI constructs. See generate/unix/Makefile for 1921a list of warning options used with gcc 3 and 4. ACPICA BZ 735. 1922 1923Example Code and Data Size: These are the sizes for the OS-independent 1924acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1925debug version of the code includes the debug output trace mechanism and has a 1926much larger code and data size. 1927 1928 Previous Release: 1929 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 1930 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 1931 Current Release: 1932 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 1933 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 1934 19352) iASL Compiler/Disassembler and Tools: 1936 1937iASL: Fixed a generation warning from Bison 2.3 and fixed several warnings on 1938the 64-bit build. 1939 1940iASL: Fixed a problem where the Unix/Linux versions of the compiler could not 1941correctly digest Windows/DOS formatted files (with CR/LF). 1942 1943iASL: Added a new option for "quiet mode" (-va) that produces only the 1944compilation summary, not individual errors and warnings. Useful for large 1945batch compilations. 1946 1947AcpiExec: Implemented a new option (-z) to enable a forced semaphore/mutex 1948timeout that can be used to detect hang conditions during execution of AML 1949code (includes both internal semaphores and AML-defined mutexes and events.) 1950 1951Added new makefiles for the generation of acpica in a generic unix-like 1952environment. These makefiles are intended to generate the acpica tools and 1953utilities from the original acpica git source tree structure. 1954 1955Test Suites: Updated and cleaned up the documentation files. Updated the 1956copyrights to 2009, affecting all source files. Use the new version of iASL 1957with quiet mode. Increased the number of available semaphores in the Windows 1958OSL, allowing the aslts to execute fully on Windows. For the Unix OSL, added 1959an alternate implementation of the semaphore timeout to allow aslts to 1960execute fully on Cygwin. 1961 1962---------------------------------------- 196320 March 2009. Summary of changes for version 20090320: 1964 19651) ACPI CA Core Subsystem: 1966 1967Fixed a possible race condition between AcpiWalkNamespace and dynamic table 1968unloads. Added a reader/writer locking mechanism to allow multiple concurrent 1969namespace walks (readers), but block a dynamic table unload until it can gain 1970exclusive write access to the namespace. This fixes a problem where a table 1971unload could (possibly catastrophically) delete the portion of the namespace 1972that is currently being examined by a walk. Adds a new file, utlock.c, that 1973implements the reader/writer lock mechanism. ACPICA BZ 749. 1974 1975Fixed a regression introduced in version 20090220 where a change to the FADT 1976handling could cause the ACPICA subsystem to access non-existent I/O ports. 1977 1978Modified the handling of FADT register and table (FACS/DSDT) addresses. The 1979FADT can contain both 32-bit and 64-bit versions of these addresses. 1980Previously, the 64-bit versions were favored, meaning that if both 32 and 64 1981versions were valid, but not equal, the 64-bit version was used. This was 1982found to cause some machines to fail. Now, in this case, the 32-bit version 1983is used instead. This now matches the Windows behavior. 1984 1985Implemented a new mechanism to protect certain I/O ports. Provides Microsoft 1986compatibility and protects the standard PC I/O ports from access via AML 1987code. Adds a new file, hwvalid.c 1988 1989Fixed a possible extraneous warning message from the FADT support. The 1990message warns of a 32/64 length mismatch between the legacy and GAS 1991definitions for a register. 1992 1993Removed the obsolete AcpiOsValidateAddress OSL interface. This interface is 1994made obsolete by the port protection mechanism above. It was previously used 1995to validate the entire address range of an operation region, which could be 1996incorrect if the range included illegal ports, but fields within the 1997operation region did not actually access those ports. Validation is now 1998performed on a per-field basis instead of the entire region. 1999 2000Modified the handling of the PM1 Status Register ignored bit (bit 11.) 2001Ignored bits must be "preserved" according to the ACPI spec. Usually, this 2002means a read/modify/write when writing to the register. However, for status 2003registers, writing a one means clear the event. Writing a zero means preserve 2004the event (do not clear.) This behavior is clarified in the ACPI 4.0 spec, 2005and the ACPICA code now simply always writes a zero to the ignored bit. 2006 2007Modified the handling of ignored bits for the PM1 A/B Control Registers. As 2008per the ACPI specification, for the control registers, preserve 2009(read/modify/write) all bits that are defined as either reserved or ignored. 2010 2011Updated the handling of write-only bits in the PM1 A/B Control Registers. 2012When reading the register, zero the write-only bits as per the ACPI spec. 2013ACPICA BZ 443. Lin Ming. 2014 2015Removed "Linux" from the list of supported _OSI strings. Linux no longer 2016wants to reply true to this request. The Windows strings are the only paths 2017through the AML that are tested and known to work properly. 2018 2019 Previous Release: 2020 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 2021 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 2022 Current Release: 2023 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 2024 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 2025 20262) iASL Compiler/Disassembler and Tools: 2027 2028Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c and 2029aetables.c 2030 2031---------------------------------------- 203220 February 2009. Summary of changes for version 20090220: 2033 20341) ACPI CA Core Subsystem: 2035 2036Optimized the ACPI register locking. Removed locking for reads from the ACPI 2037bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock is 2038not required when reading the single-bit registers. The 2039AcpiGetRegisterUnlocked function is no longer needed and has been removed. 2040This will improve performance for reads on these registers. ACPICA BZ 760. 2041 2042Fixed the parameter validation for AcpiRead/Write. Now return 2043AE_BAD_PARAMETER if the input register pointer is null, and AE_BAD_ADDRESS if 2044the register has an address of zero. Previously, these cases simply returned 2045AE_OK. For optional registers such as PM1B status/enable/control, the caller 2046should check for a valid register address before calling. ACPICA BZ 748. 2047 2048Renamed the external ACPI bit register access functions. Renamed 2049AcpiGetRegister and AcpiSetRegister to clarify the purpose of these 2050functions. The new names are AcpiReadBitRegister and AcpiWriteBitRegister. 2051Also, restructured the code for these functions by simplifying the code path 2052and condensing duplicate code to reduce code size. 2053 2054Added new functions to transparently handle the possibly split PM1 A/B 2055registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two functions 2056now handle the split registers for PM1 Status, Enable, and Control. ACPICA BZ 2057746. 2058 2059Added a function to handle the PM1 control registers, AcpiHwWritePm1Control. 2060This function writes both of the PM1 control registers (A/B). These registers 2061are different than the PM1 A/B status and enable registers in that different 2062values can be written to the A/B registers. Most notably, the SLP_TYP bits 2063can be different, as per the values returned from the _Sx predefined methods. 2064 2065Removed an extra register write within AcpiHwClearAcpiStatus. This function 2066was writing an optional PM1B status register twice. The existing call to the 2067low-level AcpiHwRegisterWrite automatically handles a possibly split PM1 A/B 2068register. ACPICA BZ 751. 2069 2070Split out the PM1 Status registers from the FADT. Added new globals for these 2071registers (A/B), similar to the way the PM1 Enable registers are handled. 2072Instead of overloading the FADT Event Register blocks. This makes the code 2073clearer and less prone to error. 2074 2075Fixed the warning message for when the platform contains too many ACPI tables 2076for the default size of the global root table data structure. The calculation 2077for the truncation value was incorrect. 2078 2079Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this 2080obsolete macro, since it is now a simple reference to ->common.type. There 2081were about 150 invocations of the macro across 41 files. ACPICA BZ 755. 2082 2083Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as 2084TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to 2085simply SLEEP_TYPE. ACPICA BZ 754. 2086 2087Conditionally compile the AcpiSetFirmwareWakingVector64 function. This 2088function is only needed on 64-bit host operating systems and is thus not 2089included for 32-bit hosts. 2090 2091Debug output: print the input and result for invocations of the _OSI reserved 2092control method via the ACPI_LV_INFO debug level. Also, reduced some of the 2093verbosity of this debug level. Len Brown. 2094 2095Example Code and Data Size: These are the sizes for the OS-independent 2096acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2097debug version of the code includes the debug output trace mechanism and has a 2098much larger code and data size. 2099 2100 Previous Release: 2101 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 2102 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 2103 Current Release: 2104 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 2105 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 2106 21072) iASL Compiler/Disassembler and Tools: 2108 2109Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the 2110various legal performance profiles. 2111 2112---------------------------------------- 211323 January 2009. Summary of changes for version 20090123: 2114 21151) ACPI CA Core Subsystem: 2116 2117Added the 2009 copyright to all module headers and signons. This affects 2118virtually every file in the ACPICA core subsystem, the iASL compiler, and 2119the tools/utilities. 2120 2121Implemented a change to allow the host to override any ACPI table, including 2122dynamically loaded tables. Previously, only the DSDT could be replaced by the 2123host. With this change, the AcpiOsTableOverride interface is called for each 2124table found in the RSDT/XSDT during ACPICA initialization, and also whenever 2125a table is dynamically loaded via the AML Load operator. 2126 2127Updated FADT flag definitions, especially the Boot Architecture flags. 2128 2129Debugger: For the Find command, automatically pad the input ACPI name with 2130underscores if the name is shorter than 4 characters. This enables a match 2131with the actual namespace entry which is itself padded with underscores. 2132 2133Example Code and Data Size: These are the sizes for the OS-independent 2134acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2135debug version of the code includes the debug output trace mechanism and has a 2136much larger code and data size. 2137 2138 Previous Release: 2139 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 2140 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 2141 Current Release: 2142 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 2143 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 2144 21452) iASL Compiler/Disassembler and Tools: 2146 2147Fix build error under Bison-2.4. 2148 2149Dissasembler: Enhanced FADT support. Added decoding of the Boot Architecture 2150flags. Now decode all flags, regardless of the FADT version. Flag output 2151includes the FADT version which first defined each flag. 2152 2153The iASL -g option now dumps the RSDT to a file (in addition to the FADT and 2154DSDT). Windows only. 2155 2156---------------------------------------- 215704 December 2008. Summary of changes for version 20081204: 2158 21591) ACPI CA Core Subsystem: 2160 2161The ACPICA Programmer Reference has been completely updated and revamped for 2162this release. This includes updates to the external interfaces, OSL 2163interfaces, the overview sections, and the debugger reference. 2164 2165Several new ACPICA interfaces have been implemented and documented in the 2166programmer reference: 2167AcpiReset - Writes the reset value to the FADT-defined reset register. 2168AcpiDisableAllGpes - Disable all available GPEs. 2169AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs. 2170AcpiGetGpeDevice - Get the GPE block device associated with a GPE. 2171AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs. 2172AcpiRead - Low-level read ACPI register (was HwLowLevelRead.) 2173AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.) 2174 2175Most of the public ACPI hardware-related interfaces have been moved to a new 2176file, components/hardware/hwxface.c 2177 2178Enhanced the FADT parsing and low-level ACPI register access: The ACPI 2179register lengths within the FADT are now used, and the low level ACPI 2180register access no longer hardcodes the ACPI register lengths. Given that 2181there may be some risk in actually trusting the FADT register lengths, a run- 2182time option was added to fall back to the default hardcoded lengths if the 2183FADT proves to contain incorrect values - UseDefaultRegisterWidths. This 2184option is set to true for now, and a warning is issued if a suspicious FADT 2185register length is overridden with the default value. 2186 2187Fixed a reference count issue in NsRepairObject. This problem was introduced 2188in version 20081031 as part of a fix to repair Buffer objects within 2189Packages. Lin Ming. 2190 2191Added semaphore support to the Linux/Unix application OS-services layer 2192(OSL). ACPICA BZ 448. Lin Ming. 2193 2194Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes will 2195be implemented in the OSL, or will binary semaphores be used instead. 2196 2197Example Code and Data Size: These are the sizes for the OS-independent 2198acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2199debug version of the code includes the debug output trace mechanism and has a 2200much larger code and data size. 2201 2202 Previous Release: 2203 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 2204 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 2205 Current Release: 2206 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 2207 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 2208 22092) iASL Compiler/Disassembler and Tools: 2210 2211iASL: Completed the '-e' option to include additional ACPI tables in order to 2212aid with disassembly and External statement generation. ACPICA BZ 742. Lin 2213Ming. 2214 2215iASL: Removed the "named object in while loop" error. The compiler cannot 2216determine how many times a loop will execute. ACPICA BZ 730. 2217 2218Disassembler: Implemented support for FADT revision 2 (MS extension). ACPICA 2219BZ 743. 2220 2221Disassembler: Updates for several ACPI data tables (HEST, EINJ, and MCFG). 2222 2223---------------------------------------- 222431 October 2008. Summary of changes for version 20081031: 2225 22261) ACPI CA Core Subsystem: 2227 2228Restructured the ACPICA header files into public/private. acpi.h now includes 2229only the "public" acpica headers. All other acpica headers are "private" and 2230should not be included by acpica users. One new file, accommon.h is used to 2231include the commonly used private headers for acpica code generation. Future 2232plans include moving all private headers to a new subdirectory. 2233 2234Implemented an automatic Buffer->String return value conversion for 2235predefined ACPI methods. For these methods (such as _BIF), added automatic 2236conversion for return objects that are required to be a String, but a Buffer 2237was found instead. This can happen when reading string battery data from an 2238operation region, because it used to be difficult to convert the data from 2239buffer to string from within the ASL. Ensures that the host OS is provided 2240with a valid null-terminated string. Linux BZ 11822. 2241 2242Updated the FACS waking vector interfaces. Split AcpiSetFirmwareWakingVector 2243into two: one for the 32-bit vector, another for the 64-bit vector. This is 2244required because the host OS must setup the wake much differently for each 2245vector (real vs. protected mode, etc.) and the interface itself should not be 2246deciding which vector to use. Also, eliminated the GetFirmwareWakingVector 2247interface, as it served no purpose (only the firmware reads the vector, OS 2248only writes the vector.) ACPICA BZ 731. 2249 2250Implemented a mechanism to escape infinite AML While() loops. Added a loop 2251counter to force exit from AML While loops if the count becomes too large. 2252This can occur in poorly written AML when the hardware does not respond 2253within a while loop and the loop does not implement a timeout. The maximum 2254loop count is configurable. A new exception code is returned when a loop is 2255broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore. 2256 2257Optimized the execution of AML While loops. Previously, a control state 2258object was allocated and freed for each execution of the loop. The 2259optimization is to simply reuse the control state for each iteration. This 2260speeds up the raw loop execution time by about 5%. 2261 2262Enhanced the implicit return mechanism. For Windows compatibility, return an 2263implicit integer of value zero for methods that contain no executable code. 2264Such methods are seen in the field as stubs (presumably), and can cause 2265drivers to fail if they expect a return value. Lin Ming. 2266 2267Allow multiple backslashes as root prefixes in namepaths. In a fully 2268qualified namepath, allow multiple backslash prefixes. This can happen (and 2269is seen in the field) because of the use of a double-backslash in strings 2270(since backslash is the escape character) causing confusion. ACPICA BZ 739 2271Lin Ming. 2272 2273Emit a warning if two different FACS or DSDT tables are discovered in the 2274FADT. Checks if there are two valid but different addresses for the FACS and 2275DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.) 2276 2277Consolidated the method argument count validation code. Merged the code that 2278validates control method argument counts into the predefined validation 2279module. Eliminates possible multiple warnings for incorrect argument counts. 2280 2281Implemented ACPICA example code. Includes code for ACPICA initialization, 2282handler installation, and calling a control method. Available at 2283source/tools/examples. 2284 2285Added a global pointer for FACS table to simplify internal FACS access. Use 2286the global pointer instead of using AcpiGetTableByIndex for each FACS access. 2287This simplifies the code for the Global Lock and the Firmware Waking 2288Vector(s). 2289 2290Example Code and Data Size: These are the sizes for the OS-independent 2291acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2292debug version of the code includes the debug output trace mechanism and has a 2293much larger code and data size. 2294 2295 Previous Release: 2296 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 2297 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 2298 Current Release: 2299 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 2300 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 2301 23022) iASL Compiler/Disassembler and Tools: 2303 2304iASL: Improved disassembly of external method calls. Added the -e option to 2305allow the inclusion of additional ACPI tables to help with the disassembly of 2306method invocations and the generation of external declarations during the 2307disassembly. Certain external method invocations cannot be disassembled 2308properly without the actual declaration of the method. Use the -e option to 2309include the table where the external method(s) are actually declared. Most 2310useful for disassembling SSDTs that make method calls back to the master 2311DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl -d 2312-e dsdt.aml ssdt1.aml 2313 2314iASL: Fix to allow references to aliases within ASL namepaths. Fixes a 2315problem where the use of an alias within a namepath would result in a not 2316found error or cause the compiler to fault. Also now allows forward 2317references from the Alias operator itself. ACPICA BZ 738. 2318 2319---------------------------------------- 232026 September 2008. Summary of changes for version 20080926: 2321 23221) ACPI CA Core Subsystem: 2323 2324Designed and implemented a mechanism to validate predefined ACPI methods and 2325objects. This code validates the predefined ACPI objects (objects whose names 2326start with underscore) that appear in the namespace, at the time they are 2327evaluated. The argument count and the type of the returned object are 2328validated against the ACPI specification. The purpose of this validation is 2329to detect problems with the BIOS-implemented predefined ACPI objects before 2330the results are returned to the ACPI-related drivers. Future enhancements may 2331include actual repair of incorrect return objects where possible. Two new 2332files are nspredef.c and acpredef.h. 2333 2334Fixed a fault in the AML parser if a memory allocation fails during the Op 2335completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492. 2336 2337Fixed an issue with implicit return compatibility. This change improves the 2338implicit return mechanism to be more compatible with the MS interpreter. Lin 2339Ming, ACPICA BZ 349. 2340 2341Implemented support for zero-length buffer-to-string conversions. Allow zero 2342length strings during interpreter buffer-to-string conversions. For example, 2343during the ToDecimalString and ToHexString operators, as well as implicit 2344conversions. Fiodor Suietov, ACPICA BZ 585. 2345 2346Fixed two possible memory leaks in the error exit paths of 2347AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions are 2348similar in that they use a stack of state objects in order to eliminate 2349recursion. The stack must be fully unwound and deallocated if an error 2350occurs. Lin Ming. ACPICA BZ 383. 2351 2352Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the global 2353ACPI register table. This bit does not exist and is unused. Lin Ming, Bob 2354Moore ACPICA BZ 442. 2355 2356Removed the obsolete version number in module headers. Removed the 2357"$Revision" number that appeared in each module header. This version number 2358was useful under SourceSafe and CVS, but has no meaning under git. It is not 2359only incorrect, it could also be misleading. 2360 2361Example Code and Data Size: These are the sizes for the OS-independent 2362acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2363debug version of the code includes the debug output trace mechanism and has a 2364much larger code and data size. 2365 2366 Previous Release: 2367 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 2368 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 2369 Current Release: 2370 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 2371 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 2372 2373---------------------------------------- 237429 August 2008. Summary of changes for version 20080829: 2375 23761) ACPI CA Core Subsystem: 2377 2378Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type 2379Reference. Changes include the elimination of cheating on the Object field 2380for the DdbHandle subtype, addition of a reference class field to 2381differentiate the various reference types (instead of an AML opcode), and the 2382cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723 2383 2384Reduce an error to a warning for an incorrect method argument count. 2385Previously aborted with an error if too few arguments were passed to a 2386control method via the external ACPICA interface. Now issue a warning instead 2387and continue. Handles the case where the method inadvertently declares too 2388many arguments, but does not actually use the extra ones. Applies mainly to 2389the predefined methods. Lin Ming. Linux BZ 11032. 2390 2391Disallow the evaluation of named object types with no intrinsic value. Return 2392AE_TYPE for objects that have no value and therefore evaluation is undefined: 2393Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation of 2394these types were allowed, but an exception would be generated at some point 2395during the evaluation. Now, the error is generated up front. 2396 2397Fixed a possible memory leak in the AcpiNsGetExternalPathname function 2398(nsnames.c). Fixes a leak in the error exit path. 2399 2400Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These debug 2401levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and ACPI_EXCEPTION 2402interfaces. Also added ACPI_DB_EVENTS to correspond with the existing 2403ACPI_LV_EVENTS. 2404 2405Removed obsolete and/or unused exception codes from the acexcep.h header. 2406There is the possibility that certain device drivers may be affected if they 2407use any of these exceptions. 2408 2409The ACPICA documentation has been added to the public git source tree, under 2410acpica/documents. Included are the ACPICA programmer reference, the iASL 2411compiler reference, and the changes.txt release logfile. 2412 2413Example Code and Data Size: These are the sizes for the OS-independent 2414acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2415debug version of the code includes the debug output trace mechanism and has a 2416much larger code and data size. 2417 2418 Previous Release: 2419 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 2420 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 2421 Current Release: 2422 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 2423 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 2424 24252) iASL Compiler/Disassembler and Tools: 2426 2427Allow multiple argument counts for the predefined _SCP method. ACPI 3.0 2428defines _SCP with 3 arguments. Previous versions defined it with only 1 2429argument. iASL now allows both definitions. 2430 2431iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for zero- 2432length subtables when disassembling ACPI tables. Also fixed a couple of 2433errors where a full 16-bit table type field was not extracted from the input 2434properly. 2435 2436acpisrc: Improve comment counting mechanism for generating source code 2437statistics. Count first and last lines of multi-line comments as whitespace, 2438not comment lines. Handle Linux legal header in addition to standard acpica 2439header. 2440 2441---------------------------------------- 2442 244329 July 2008. Summary of changes for version 20080729: 2444 24451) ACPI CA Core Subsystem: 2446 2447Fix a possible deadlock in the GPE dispatch. Remove call to 2448AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will attempt 2449to acquire the GPE lock but can deadlock since the GPE lock is already held 2450at dispatch time. This code was introduced in version 20060831 as a response 2451to Linux BZ 6881 and has since been removed from Linux. 2452 2453Add a function to dereference returned reference objects. Examines the return 2454object from a call to AcpiEvaluateObject. Any Index or RefOf references are 2455automatically dereferenced in an attempt to return something useful (these 2456reference types cannot be converted into an external ACPI_OBJECT.) Provides 2457MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105 2458 2459x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new 2460subtables for the MADT and one new subtable for the SRAT. Includes 2461disassembler and AcpiSrc support. Data from the Intel 64 Architecture x2APIC 2462Specification, June 2008. 2463 2464Additional error checking for pathname utilities. Add error check after all 2465calls to AcpiNsGetPathnameLength. Add status return from 2466AcpiNsBuildExternalPath and check after all calls. Add parameter validation 2467to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar. 2468 2469Return status from the global init function AcpiUtGlobalInitialize. This is 2470used by both the kernel subsystem and the utilities such as iASL compiler. 2471The function could possibly fail when the caches are initialized. Yang Yi. 2472 2473Add a function to decode reference object types to strings. Created for 2474improved error messages. 2475 2476Improve object conversion error messages. Better error messages during object 2477conversion from internal to the external ACPI_OBJECT. Used for external calls 2478to AcpiEvaluateObject. 2479 2480Example Code and Data Size: These are the sizes for the OS-independent 2481acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2482debug version of the code includes the debug output trace mechanism and has a 2483much larger code and data size. 2484 2485 Previous Release: 2486 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 2487 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 2488 Current Release: 2489 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 2490 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 2491 24922) iASL Compiler/Disassembler and Tools: 2493 2494Debugger: fix a possible hang when evaluating non-methods. Fixes a problem 2495introduced in version 20080701. If the object being evaluated (via execute 2496command) is not a method, the debugger can hang while trying to obtain non- 2497existent parameters. 2498 2499iASL: relax error for using reserved "_T_x" identifiers. These names can 2500appear in a disassembled ASL file if they were emitted by the original 2501compiler. Instead of issuing an error or warning and forcing the user to 2502manually change these names, issue a remark instead. 2503 2504iASL: error if named object created in while loop. Emit an error if any named 2505object is created within a While loop. If allowed, this code will generate a 2506run-time error on the second iteration of the loop when an attempt is made to 2507create the same named object twice. ACPICA bugzilla 730. 2508 2509iASL: Support absolute pathnames for include files. Add support for absolute 2510pathnames within the Include operator. previously, only relative pathnames 2511were supported. 2512 2513iASL: Enforce minimum 1 interrupt in interrupt macro and Resource Descriptor. 2514The ACPI spec requires one interrupt minimum. BZ 423 2515 2516iASL: Handle a missing ResourceSource arg, with a present SourceIndex. 2517Handles the case for the Interrupt Resource Descriptor where 2518the ResourceSource argument is omitted but ResourceSourceIndex 2519is present. Now leave room for the Index. BZ 426 2520 2521iASL: Prevent error message if CondRefOf target does not exist. Fixes cases 2522where an error message is emitted if the target does not exist. BZ 516 2523 2524iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option 2525(get ACPI tables on Windows). This was apparently broken in version 20070919. 2526 2527AcpiXtract: Handle EOF while extracting data. Correctly handle the case where 2528the EOF happens immediately after the last table in the input file. Print 2529completion message. Previously, no message was displayed in this case. 2530 2531---------------------------------------- 253201 July 2008. Summary of changes for version 20080701: 2533 25340) Git source tree / acpica.org 2535 2536Fixed a problem where a git-clone from http would not transfer the entire 2537source tree. 2538 25391) ACPI CA Core Subsystem: 2540 2541Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one 2542enable bit. Now performs a read-change-write of the enable register instead 2543of simply writing out the cached enable mask. This will prevent inadvertent 2544enabling of GPEs if a rogue GPE is received during initialization (before GPE 2545handlers are installed.) 2546 2547Implemented a copy for dynamically loaded tables. Previously, dynamically 2548loaded tables were simply mapped - but on some machines this memory is 2549corrupted after suspend. Now copy the table to a local buffer. For the 2550OpRegion case, added checksum verify. Use the table length from the table 2551header, not the region length. For the Buffer case, use the table length 2552also. Dennis Noordsij, Bob Moore. BZ 10734 2553 2554Fixed a problem where the same ACPI table could not be dynamically loaded and 2555unloaded more than once. Without this change, a table cannot be loaded again 2556once it has been loaded/unloaded one time. The current mechanism does not 2557unregister a table upon an unload. During a load, if the same table is found, 2558this no longer returns an exception. BZ 722 2559 2560Fixed a problem where the wrong descriptor length was calculated for the 2561EndTag descriptor in 64-bit mode. The "minimal" descriptors such as EndTag 2562are calculated as 12 bytes long, but the actual length in the internal 2563descriptor is 16 because of the round-up to 8 on the 64-bit build. Reported 2564by Linn Crosetto. BZ 728 2565 2566Fixed a possible memory leak in the Unload operator. The DdbHandle returned 2567by Load() did not have its reference count decremented during unload, leading 2568to a memory leak. Lin Ming. BZ 727 2569 2570Fixed a possible memory leak when deleting thermal/processor objects. Any 2571associated notify handlers (and objects) were not being deleted. Fiodor 2572Suietov. BZ 506 2573 2574Fixed the ordering of the ASCII names in the global mutex table to match the 2575actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug only. 2576Vegard Nossum. BZ 726 2577 2578Enhanced the AcpiGetObjectInfo interface to return the number of required 2579arguments if the object is a control method. Added this call to the debugger 2580so the proper number of default arguments are passed to a method. This 2581prevents a warning when executing methods from AcpiExec. 2582 2583Added a check for an invalid handle in AcpiGetObjectInfo. Return 2584AE_BAD_PARAMETER if input handle is invalid. BZ 474 2585 2586Fixed an extraneous warning from exconfig.c on the 64-bit build. 2587 2588Example Code and Data Size: These are the sizes for the OS-independent 2589acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2590debug version of the code includes the debug output trace mechanism and has a 2591much larger code and data size. 2592 2593 Previous Release: 2594 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 2595 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 2596 Current Release: 2597 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 2598 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 2599 26002) iASL Compiler/Disassembler and Tools: 2601 2602iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both 2603resource descriptor names. 2604 2605iASL: Detect invalid ASCII characters in input (windows version). Removed the 2606"-CF" flag from the flex compile, enables correct detection of non-ASCII 2607characters in the input. BZ 441 2608 2609iASL: Eliminate warning when result of LoadTable is not used. Eliminate the 2610"result of operation not used" warning when the DDB handle returned from 2611LoadTable is not used. The warning is not needed. BZ 590 2612 2613AcpiExec: Add support for dynamic table load/unload. Now calls _CFG method to 2614pass address of table to the AML. Added option to disable OpRegion simulation 2615to allow creation of an OpRegion with a real address that was passed to _CFG. 2616All of this allows testing of the Load and Unload operators from AcpiExec. 2617 2618Debugger: update tables command for unloaded tables. Handle unloaded tables 2619and use the standard table header output routine. 2620 2621---------------------------------------- 262209 June 2008. Summary of changes for version 20080609: 2623 26241) ACPI CA Core Subsystem: 2625 2626Implemented a workaround for reversed _PRT entries. A significant number of 2627BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This 2628change dynamically detects and repairs this problem. Provides compatibility 2629with MS ACPI. BZ 6859 2630 2631Simplified the internal ACPI hardware interfaces to eliminate the locking 2632flag parameter from Register Read/Write. Added a new external interface, 2633AcpiGetRegisterUnlocked. 2634 2635Fixed a problem where the invocation of a GPE control method could hang. This 2636was a regression introduced in 20080514. The new method argument count 2637validation mechanism can enter an infinite loop when a GPE method is 2638dispatched. Problem fixed by removing the obsolete code that passed GPE block 2639information to the notify handler via the control method parameter pointer. 2640 2641Fixed a problem where the _SST execution status was incorrectly returned to 2642the caller of AcpiEnterSleepStatePrep. This was a regression introduced in 264320080514. _SST is optional and a NOT_FOUND exception should never be 2644returned. BZ 716 2645 2646Fixed a problem where a deleted object could be accessed from within the AML 2647parser. This was a regression introduced in version 20080123 as a fix for the 2648Unload operator. Lin Ming. BZ 10669 2649 2650Cleaned up the debug operand dump mechanism. Eliminated unnecessary operands 2651and eliminated the use of a negative index in a loop. Operands are now 2652displayed in the correct order, not backwards. This also fixes a regression 2653introduced in 20080514 on 64-bit systems where the elimination of 2654ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ 715 2655 2656Fixed a possible memory leak in EvPciConfigRegionSetup where the error exit 2657path did not delete a locally allocated structure. 2658 2659Updated definitions for the DMAR and SRAT tables to synchronize with the 2660current specifications. Includes disassembler support. 2661 2662Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect 2663loop termination value was used. Loop terminated on iteration early, missing 2664one mutex. Linn Crosetto 2665 2666Example Code and Data Size: These are the sizes for the OS-independent 2667acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2668debug version of the code includes the debug output trace mechanism and has a 2669much larger code and data size. 2670 2671 Previous Release: 2672 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 2673 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 2674 Current Release: 2675 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 2676 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 2677 26782) iASL Compiler/Disassembler and Tools: 2679 2680Disassembler: Implemented support for EisaId() within _CID objects. Now 2681disassemble integer _CID objects back to EisaId invocations, including 2682multiple integers within _CID packages. Includes single-step support for 2683debugger also. 2684 2685Disassembler: Added support for DMAR and SRAT table definition changes. 2686 2687---------------------------------------- 268814 May 2008. Summary of changes for version 20080514: 2689 26901) ACPI CA Core Subsystem: 2691 2692Fixed a problem where GPEs were enabled too early during the ACPICA 2693initialization. This could lead to "handler not installed" errors on some 2694machines. Moved GPE enable until after _REG/_STA/_INI methods are run. This 2695ensures that all operation regions and devices throughout the namespace have 2696been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916. 2697 2698Implemented a change to the enter sleep code. Moved execution of the _GTS 2699method to just before setting sleep enable bit. The execution was moved from 2700AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed 2701immediately before the SLP_EN bit is set, as per the ACPI specification. 2702Luming Yu, BZ 1653. 2703 2704Implemented a fix to disable unknown GPEs (2nd version). Now always disable 2705the GPE, even if ACPICA thinks that that it is already disabled. It is 2706possible that the AML or some other code has enabled the GPE unbeknownst to 2707the ACPICA code. 2708 2709Fixed a problem with the Field operator where zero-length fields would return 2710an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length ASL 2711field declarations in Field(), BankField(), and IndexField(). BZ 10606. 2712 2713Implemented a fix for the Load operator, now load the table at the namespace 2714root. This reverts a change introduced in version 20071019. The table is now 2715loaded at the namespace root even though this goes against the ACPI 2716specification. This provides compatibility with other ACPI implementations. 2717The ACPI specification will be updated to reflect this in ACPI 4.0. Lin Ming. 2718 2719Fixed a problem where ACPICA would not Load() tables with unusual signatures. 2720Now ignore ACPI table signature for Load() operator. Only "SSDT" is 2721acceptable to the ACPI spec, but tables are seen with OEMx and null sigs. 2722Therefore, signature validation is worthless. Apparently MS ACPI accepts such 2723signatures, ACPICA must be compatible. BZ 10454. 2724 2725Fixed a possible negative array index in AcpiUtValidateException. Added NULL 2726fields to the exception string arrays to eliminate a -1 subtraction on the 2727SubStatus field. 2728 2729Updated the debug tracking macros to reduce overall code and data size. 2730Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings 2731instead of pointers to static strings. Jan Beulich and Bob Moore. 2732 2733Implemented argument count checking in control method invocation via 2734AcpiEvaluateObject. Now emit an error if too few arguments, warning if too 2735many. This applies only to extern programmatic control method execution, not 2736method-to-method calls within the AML. Lin Ming. 2737 2738Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is no 2739longer needed, especially with the removal of 16-bit support. It was replaced 2740mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64 bit on 274132/64-bit platforms is required. 2742 2743Added the C const qualifier for appropriate string constants -- mostly 2744MODULE_NAME and printf format strings. Jan Beulich. 2745 2746Example Code and Data Size: These are the sizes for the OS-independent 2747acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2748debug version of the code includes the debug output trace mechanism and has a 2749much larger code and data size. 2750 2751 Previous Release: 2752 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 2753 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 2754 Current Release: 2755 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 2756 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 2757 27582) iASL Compiler/Disassembler and Tools: 2759 2760Implemented ACPI table revision ID validation in the disassembler. Zero is 2761always invalid. For DSDTs, the ID controls the interpreter integer width. 1 2762means 32-bit and this is unusual. 2 or greater is 64-bit. 2763 2764---------------------------------------- 276521 March 2008. Summary of changes for version 20080321: 2766 27671) ACPI CA Core Subsystem: 2768 2769Implemented an additional change to the GPE support in order to suppress 2770spurious or stray GPEs. The AcpiEvDisableGpe function will now permanently 2771disable incoming GPEs that are neither enabled nor disabled -- meaning that 2772the GPE is unknown to the system. This should prevent future interrupt floods 2773from that GPE. BZ 6217 (Zhang Rui) 2774 2775Fixed a problem where NULL package elements were not returned to the 2776AcpiEvaluateObject interface correctly. The element was simply ignored 2777instead of returning a NULL ACPI_OBJECT package element, potentially causing 2778a buffer overflow and/or confusing the caller who expected a fixed number of 2779elements. BZ 10132 (Lin Ming, Bob Moore) 2780 2781Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word, Dword, 2782Qword), Field, BankField, and IndexField operators when invoked from inside 2783an executing control method. In this case, these operators created namespace 2784nodes that were incorrectly left marked as permanent nodes instead of 2785temporary nodes. This could cause a problem if there is race condition 2786between an exiting control method and a running namespace walk. (Reported by 2787Linn Crosetto) 2788 2789Fixed a problem where the CreateField and CreateXXXField operators would 2790incorrectly allow duplicate names (the name of the field) with no exception 2791generated. 2792 2793Implemented several changes for Notify handling. Added support for new Notify 2794values (ACPI 2.0+) and improved the Notify debug output. Notify on 2795PowerResource objects is no longer allowed, as per the ACPI specification. 2796(Bob Moore, Zhang Rui) 2797 2798All Reference Objects returned via the AcpiEvaluateObject interface are now 2799marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved for 2800NULL objects - either NULL package elements or unresolved named references. 2801 2802Fixed a problem where an extraneous debug message was produced for package 2803objects (when debugging enabled). The message "Package List length larger 2804than NumElements count" is now produced in the correct case, and is now an 2805error message rather than a debug message. Added a debug message for the 2806opposite case, where NumElements is larger than the Package List (the package 2807will be padded out with NULL elements as per the ACPI spec.) 2808 2809Implemented several improvements for the output of the ASL "Debug" object to 2810clarify and keep all data for a given object on one output line. 2811 2812Fixed two size calculation issues with the variable-length Start Dependent 2813resource descriptor. 2814 2815Example Code and Data Size: These are the sizes for the OS-independent 2816acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2817debug version of the code includes the debug output trace mechanism and has 2818a much larger code and data size. 2819 2820 Previous Release: 2821 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 2822 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 2823 Current Release: 2824 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 2825 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 2826 28272) iASL Compiler/Disassembler and Tools: 2828 2829Fixed a problem with the use of the Switch operator where execution of the 2830containing method by multiple concurrent threads could cause an 2831AE_ALREADY_EXISTS exception. This is caused by the fact that there is no 2832actual Switch opcode, it must be simulated with local named temporary 2833variables and if/else pairs. The solution chosen was to mark any method that 2834uses Switch as Serialized, thus preventing multiple thread entries. BZ 469. 2835 2836---------------------------------------- 283713 February 2008. Summary of changes for version 20080213: 2838 28391) ACPI CA Core Subsystem: 2840 2841Implemented another MS compatibility design change for GPE/Notify handling. 2842GPEs are now cleared/enabled asynchronously to allow all pending notifies to 2843complete first. It is expected that the OSL will queue the enable request 2844behind all pending notify requests (may require changes to the local host OSL 2845in AcpiOsExecute). Alexey Starikovskiy. 2846 2847Fixed a problem where buffer and package objects passed as arguments to a 2848control method via the external AcpiEvaluateObject interface could cause an 2849AE_AML_INTERNAL exception depending on the order and type of operators 2850executed by the target control method. 2851 2852Fixed a problem where resource descriptor size optimization could cause a 2853problem when a _CRS resource template is passed to a _SRS method. The _SRS 2854resource template must use the same descriptors (with the same size) as 2855returned from _CRS. This change affects the following resource descriptors: 2856IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ 9487) 2857 2858Fixed a problem where a CopyObject to RegionField, BankField, and IndexField 2859objects did not perform an implicit conversion as it should. These types must 2860retain their initial type permanently as per the ACPI specification. However, 2861a CopyObject to all other object types should not perform an implicit 2862conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388 2863 2864Fixed a problem with the AcpiGetDevices interface where the mechanism to 2865match device CIDs did not examine the entire list of available CIDs, but 2866instead aborted on the first non-matching CID. Andrew Patterson. 2867 2868Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro was 2869inadvertently changed to return a 16-bit value instead of a 32-bit value, 2870truncating the upper dword of a 64-bit value. This macro is only used to 2871display debug output, so no incorrect calculations were made. Also, 2872reimplemented the macro so that a 64-bit shift is not performed by 2873inefficient compilers. 2874 2875Added missing va_end statements that should correspond with each va_start 2876statement. 2877 2878Example Code and Data Size: These are the sizes for the OS-independent 2879acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2880debug version of the code includes the debug output trace mechanism and has 2881a much larger code and data size. 2882 2883 Previous Release: 2884 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 2885 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 2886 Current Release: 2887 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 2888 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 2889 28902) iASL Compiler/Disassembler and Tools: 2891 2892Implemented full disassembler support for the following new ACPI tables: 2893BERT, EINJ, and ERST. Implemented partial disassembler support for the 2894complicated HEST table. These tables support the Windows Hardware Error 2895Architecture (WHEA). 2896 2897---------------------------------------- 289823 January 2008. Summary of changes for version 20080123: 2899 29001) ACPI CA Core Subsystem: 2901 2902Added the 2008 copyright to all module headers and signons. This affects 2903virtually every file in the ACPICA core subsystem, the iASL compiler, and 2904the tools/utilities. 2905 2906Fixed a problem with the SizeOf operator when used with Package and Buffer 2907objects. These objects have deferred execution for some arguments, and the 2908execution is now completed before the SizeOf is executed. This problem caused 2909unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore) BZ 29109558 2911 2912Implemented an enhancement to the interpreter "slack mode". In the absence of 2913an explicit return or an implicitly returned object from the last executed 2914opcode, a control method will now implicitly return an integer of value 0 for 2915Microsoft compatibility. (Lin Ming) BZ 392 2916 2917Fixed a problem with the Load operator where an exception was not returned in 2918the case where the table is already loaded. (Lin Ming) BZ 463 2919 2920Implemented support for the use of DDBHandles as an Indexed Reference, as per 2921the ACPI spec. (Lin Ming) BZ 486 2922 2923Implemented support for UserTerm (Method invocation) for the Unload operator 2924as per the ACPI spec. (Lin Ming) BZ 580 2925 2926Fixed a problem with the LoadTable operator where the OemId and OemTableId 2927input strings could cause unexpected failures if they were shorter than the 2928maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576 2929 2930Implemented support for UserTerm (Method invocation) for the Unload operator 2931as per the ACPI spec. (Lin Ming) BZ 580 2932 2933Implemented header file support for new ACPI tables - BERT, ERST, EINJ, HEST, 2934IBFT, UEFI, WDAT. Disassembler support is forthcoming. 2935 2936Example Code and Data Size: These are the sizes for the OS-independent 2937acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2938debug version of the code includes the debug output trace mechanism and has 2939a much larger code and data size. 2940 2941 Previous Release: 2942 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 2943 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 2944 Current Release: 2945 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 2946 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 2947 29482) iASL Compiler/Disassembler and Tools: 2949 2950Implemented support in the disassembler for checksum validation on incoming 2951binary DSDTs and SSDTs. If incorrect, a message is displayed within the table 2952header dump at the start of the disassembly. 2953 2954Implemented additional debugging information in the namespace listing file 2955created during compilation. In addition to the namespace hierarchy, the full 2956pathname to each namespace object is displayed. 2957 2958Fixed a problem with the disassembler where invalid ACPI tables could cause 2959faults or infinite loops. 2960 2961Fixed an unexpected parse error when using the optional "parameter types" 2962list in a control method declaration. (Lin Ming) BZ 397 2963 2964Fixed a problem where two External declarations with the same name did not 2965cause an error (Lin Ming) BZ 509 2966 2967Implemented support for full TermArgs (adding Argx, Localx and method 2968invocation) for the ParameterData parameter to the LoadTable operator. (Lin 2969Ming) BZ 583,587 2970 2971---------------------------------------- 297219 December 2007. Summary of changes for version 20071219: 2973 29741) ACPI CA Core Subsystem: 2975 2976Implemented full support for deferred execution for the TermArg string 2977arguments for DataTableRegion. This enables forward references and full 2978operand resolution for the three string arguments. Similar to OperationRegion 2979deferred argument execution.) Lin Ming. BZ 430 2980 2981Implemented full argument resolution support for the BankValue argument to 2982BankField. Previously, only constants were supported, now any TermArg may be 2983used. Lin Ming BZ 387, 393 2984 2985Fixed a problem with AcpiGetDevices where the search of a branch of the 2986device tree could be terminated prematurely. In accordance with the ACPI 2987specification, the search down the current branch is terminated if a device 2988is both not present and not functional (instead of just not present.) Yakui 2989Zhao. 2990 2991Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly if 2992the underlying AML code changed the GPE enable registers. Now, any unknown 2993incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately disabled 2994instead of simply ignored. Rui Zhang. 2995 2996Fixed a problem with Index Fields where the Index register was incorrectly 2997limited to a maximum of 32 bits. Now any size may be used. 2998 2999Fixed a couple memory leaks associated with "implicit return" objects when 3000the AML Interpreter slack mode is enabled. Lin Ming BZ 349 3001 3002Example Code and Data Size: These are the sizes for the OS-independent 3003acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3004debug version of the code includes the debug output trace mechanism and has 3005a much larger code and data size. 3006 3007 Previous Release: 3008 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 3009 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 3010 Current Release: 3011 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 3012 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 3013 3014---------------------------------------- 301514 November 2007. Summary of changes for version 20071114: 3016 30171) ACPI CA Core Subsystem: 3018 3019Implemented event counters for each of the Fixed Events, the ACPI SCI 3020(interrupt) itself, and control methods executed. Named 3021AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively. These 3022should be useful for debugging and statistics. 3023 3024Implemented a new external interface, AcpiGetStatistics, to retrieve the 3025contents of the various event counters. Returns the current values for 3026AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and 3027AcpiMethodCount. The interface can be expanded in the future if new counters 3028are added. Device drivers should use this interface rather than access the 3029counters directly. 3030 3031Fixed a problem with the FromBCD and ToBCD operators. With some compilers, 3032the ShortDivide function worked incorrectly, causing problems with the BCD 3033functions with large input values. A truncation from 64-bit to 32-bit 3034inadvertently occurred. Internal BZ 435. Lin Ming 3035 3036Fixed a problem with Index references passed as method arguments. References 3037passed as arguments to control methods were dereferenced immediately (before 3038control was passed to the called method). The references are now correctly 3039passed directly to the called method. BZ 5389. Lin Ming 3040 3041Fixed a problem with CopyObject used in conjunction with the Index operator. 3042The reference was incorrectly dereferenced before the copy. The reference is 3043now correctly copied. BZ 5391. Lin Ming 3044 3045Fixed a problem with Control Method references within Package objects. These 3046references are now correctly generated. This completes the package 3047construction overhaul that began in version 20071019. 3048 3049Example Code and Data Size: These are the sizes for the OS-independent 3050acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3051debug version of the code includes the debug output trace mechanism and has 3052a much larger code and data size. 3053 3054 Previous Release: 3055 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 3056 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 3057 Current Release: 3058 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 3059 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 3060 3061 30622) iASL Compiler/Disassembler and Tools: 3063 3064The AcpiExec utility now installs handlers for all of the predefined 3065Operation Region types. New types supported are: PCI_Config, CMOS, and 3066PCIBARTarget. 3067 3068Fixed a problem with the 64-bit version of AcpiExec where the extended (64- 3069bit) address fields for the DSDT and FACS within the FADT were not being 3070used, causing truncation of the upper 32-bits of these addresses. Lin Ming 3071and Bob Moore 3072 3073---------------------------------------- 307419 October 2007. Summary of changes for version 20071019: 3075 30761) ACPI CA Core Subsystem: 3077 3078Fixed a problem with the Alias operator when the target of the alias is a 3079named ASL operator that opens a new scope -- Scope, Device, PowerResource, 3080Processor, and ThermalZone. In these cases, any children of the original 3081operator could not be accessed via the alias, potentially causing unexpected 3082AE_NOT_FOUND exceptions. (BZ 9067) 3083 3084Fixed a problem with the Package operator where all named references were 3085created as object references and left otherwise unresolved. According to the 3086ACPI specification, a Package can only contain Data Objects or references to 3087control methods. The implication is that named references to Data Objects 3088(Integer, Buffer, String, Package, BufferField, Field) should be resolved 3089immediately upon package creation. This is the approach taken with this 3090change. References to all other named objects (Methods, Devices, Scopes, 3091etc.) are all now properly created as reference objects. (BZ 5328) 3092 3093Reverted a change to Notify handling that was introduced in version 309420070508. This version changed the Notify handling from asynchronous to 3095fully synchronous (Device driver Notify handling with respect to the Notify 3096ASL operator). It was found that this change caused more problems than it 3097solved and was removed by most users. 3098 3099Fixed a problem with the Increment and Decrement operators where the type of 3100the target object could be unexpectedly and incorrectly changed. (BZ 353) 3101Lin Ming. 3102 3103Fixed a problem with the Load and LoadTable operators where the table 3104location within the namespace was ignored. Instead, the table was always 3105loaded into the root or current scope. Lin Ming. 3106 3107Fixed a problem with the Load operator when loading a table from a buffer 3108object. The input buffer was prematurely zeroed and/or deleted. (BZ 577) 3109 3110Fixed a problem with the Debug object where a store of a DdbHandle reference 3111object to the Debug object could cause a fault. 3112 3113Added a table checksum verification for the Load operator, in the case where 3114the load is from a buffer. (BZ 578). 3115 3116Implemented additional parameter validation for the LoadTable operator. The 3117length of the input strings SignatureString, OemIdString, and OemTableId are 3118now checked for maximum lengths. (BZ 582) Lin Ming. 3119 3120Example Code and Data Size: These are the sizes for the OS-independent 3121acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3122debug version of the code includes the debug output trace mechanism and has 3123a much larger code and data size. 3124 3125 Previous Release: 3126 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 3127 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 3128 Current Release: 3129 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 3130 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 3131 3132 31332) iASL Compiler/Disassembler: 3134 3135Fixed a problem where if a single file was specified and the file did not 3136exist, no error message was emitted. (Introduced with wildcard support in 3137version 20070917.) 3138 3139---------------------------------------- 314019 September 2007. Summary of changes for version 20070919: 3141 31421) ACPI CA Core Subsystem: 3143 3144Designed and implemented new external interfaces to install and remove 3145handlers for ACPI table-related events. Current events that are defined are 3146LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as 3147they are dynamically loaded and unloaded. See AcpiInstallTableHandler and 3148AcpiRemoveTableHandler. (Lin Ming and Bob Moore) 3149 3150Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag 3151(acpi_serialized option on Linux) could cause some systems to hang during 3152initialization. (Bob Moore) BZ 8171 3153 3154Fixed a problem where objects of certain types (Device, ThermalZone, 3155Processor, PowerResource) can be not found if they are declared and 3156referenced from within the same control method (Lin Ming) BZ 341 3157 3158Example Code and Data Size: These are the sizes for the OS-independent 3159acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3160debug version of the code includes the debug output trace mechanism and has 3161a much larger code and data size. 3162 3163 Previous Release: 3164 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 3165 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 3166 Current Release: 3167 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 3168 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 3169 3170 31712) iASL Compiler/Disassembler: 3172 3173Implemented support to allow multiple files to be compiled/disassembled in a 3174single invocation. This includes command line wildcard support for both the 3175Windows and Unix versions of the compiler. This feature simplifies the 3176disassembly and compilation of multiple ACPI tables in a single directory. 3177 3178---------------------------------------- 317908 May 2007. Summary of changes for version 20070508: 3180 31811) ACPI CA Core Subsystem: 3182 3183Implemented a Microsoft compatibility design change for the handling of the 3184Notify AML operator. Previously, notify handlers were dispatched and 3185executed completely asynchronously in a deferred thread. The new design 3186still executes the notify handlers in a different thread, but the original 3187thread that executed the Notify() now waits at a synchronization point for 3188the notify handler to complete. Some machines depend on a synchronous Notify 3189operator in order to operate correctly. 3190 3191Implemented support to allow Package objects to be passed as method 3192arguments to the external AcpiEvaluateObject interface. Previously, this 3193would return the AE_NOT_IMPLEMENTED exception. This feature had not been 3194implemented since there were no reserved control methods that required it 3195until recently. 3196 3197Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs that 3198contained invalid non-zero values in reserved fields could cause later 3199failures because these fields have meaning in later revisions of the FADT. 3200For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The fields 3201are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.) 3202 3203Fixed a problem where the Global Lock handle was not properly updated if a 3204thread that acquired the Global Lock via executing AML code then attempted 3205to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by Joe 3206Liu. 3207 3208Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list 3209could be corrupted if the interrupt being removed was at the head of the 3210list. Reported by Linn Crosetto. 3211 3212Example Code and Data Size: These are the sizes for the OS-independent 3213acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3214debug version of the code includes the debug output trace mechanism and has 3215a much larger code and data size. 3216 3217 Previous Release: 3218 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 3219 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 3220 Current Release: 3221 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 3222 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 3223 3224---------------------------------------- 322520 March 2007. Summary of changes for version 20070320: 3226 32271) ACPI CA Core Subsystem: 3228 3229Implemented a change to the order of interpretation and evaluation of AML 3230operand objects within the AML interpreter. The interpreter now evaluates 3231operands in the order that they appear in the AML stream (and the 3232corresponding ASL code), instead of in the reverse order (after the entire 3233operand list has been parsed). The previous behavior caused several subtle 3234incompatibilities with the Microsoft AML interpreter as well as being 3235somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov. 3236 3237Implemented a change to the ACPI Global Lock support. All interfaces to the 3238global lock now allow the same thread to acquire the lock multiple times. 3239This affects the AcpiAcquireGlobalLock external interface to the global lock 3240as well as the internal use of the global lock to support AML fields -- a 3241control method that is holding the global lock can now simultaneously access 3242AML fields that require global lock protection. Previously, in both cases, 3243this would have resulted in an AE_ALREADY_ACQUIRED exception. The change to 3244AcpiAcquireGlobalLock is of special interest to drivers for the Embedded 3245Controller. There is no change to the behavior of the AML Acquire operator, 3246as this can already be used to acquire a mutex multiple times by the same 3247thread. BZ 8066. With assistance from Alexey Starikovskiy. 3248 3249Fixed a problem where invalid objects could be referenced in the AML 3250Interpreter after error conditions. During operand evaluation, ensure that 3251the internal "Return Object" field is cleared on error and only valid 3252pointers are stored there. Caused occasional access to deleted objects that 3253resulted in "large reference count" warning messages. Valery Podrezov. 3254 3255Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur on 3256deeply nested control method invocations. BZ 7873, local BZ 487. Valery 3257Podrezov. 3258 3259Fixed an internal problem with the handling of result objects on the 3260interpreter result stack. BZ 7872. Valery Podrezov. 3261 3262Removed obsolete code that handled the case where AML_NAME_OP is the target 3263of a reference (Reference.Opcode). This code was no longer necessary. BZ 32647874. Valery Podrezov. 3265 3266Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This was a 3267remnant from the previously discontinued 16-bit support. 3268 3269Example Code and Data Size: These are the sizes for the OS-independent 3270acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3271debug version of the code includes the debug output trace mechanism and has 3272a much larger code and data size. 3273 3274 Previous Release: 3275 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 3276 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 3277 Current Release: 3278 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 3279 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 3280 3281---------------------------------------- 328226 January 2007. Summary of changes for version 20070126: 3283 32841) ACPI CA Core Subsystem: 3285 3286Added the 2007 copyright to all module headers and signons. This affects 3287virtually every file in the ACPICA core subsystem, the iASL compiler, and 3288the utilities. 3289 3290Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable 3291during a table load. A bad pointer was passed in the case where the DSDT is 3292overridden, causing a fault in this case. 3293 3294Example Code and Data Size: These are the sizes for the OS-independent 3295acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3296debug version of the code includes the debug output trace mechanism and has 3297a much larger code and data size. 3298 3299 Previous Release: 3300 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 3301 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 3302 Current Release: 3303 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 3304 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 3305 3306---------------------------------------- 330715 December 2006. Summary of changes for version 20061215: 3308 33091) ACPI CA Core Subsystem: 3310 3311Support for 16-bit ACPICA has been completely removed since it is no longer 3312necessary and it clutters the code. All 16-bit macros, types, and 3313conditional compiles have been removed, cleaning up and simplifying the code 3314across the entire subsystem. DOS support is no longer needed since the 3315bootable Linux firmware kit is now available. 3316 3317The handler for the Global Lock is now removed during AcpiTerminate to 3318enable a clean subsystem restart, via the implementation of the 3319AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz, 3320HP) 3321 3322Implemented enhancements to the multithreading support within the debugger 3323to enable improved multithreading debugging and evaluation of the subsystem. 3324(Valery Podrezov) 3325 3326Debugger: Enhanced the Statistics/Memory command to emit the total (maximum) 3327memory used during the execution, as well as the maximum memory consumed by 3328each of the various object types. (Valery Podrezov) 3329 3330Example Code and Data Size: These are the sizes for the OS-independent 3331acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3332debug version of the code includes the debug output trace mechanism and has 3333a much larger code and data size. 3334 3335 Previous Release: 3336 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 3337 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 3338 Current Release: 3339 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 3340 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 3341 3342 33432) iASL Compiler/Disassembler and Tools: 3344 3345AcpiExec: Implemented a new option (-m) to display full memory use 3346statistics upon subsystem/program termination. (Valery Podrezov) 3347 3348---------------------------------------- 334909 November 2006. Summary of changes for version 20061109: 3350 33511) ACPI CA Core Subsystem: 3352 3353Optimized the Load ASL operator in the case where the source operand is an 3354operation region. Simply map the operation region memory, instead of 3355performing a bytewise read. (Region must be of type SystemMemory, see 3356below.) 3357 3358Fixed the Load ASL operator for the case where the source operand is a 3359region field. A buffer object is also allowed as the source operand. BZ 480 3360 3361Fixed a problem where the Load ASL operator allowed the source operand to be 3362an operation region of any type. It is now restricted to regions of type 3363SystemMemory, as per the ACPI specification. BZ 481 3364 3365Additional cleanup and optimizations for the new Table Manager code. 3366 3367AcpiEnable will now fail if all of the required ACPI tables are not loaded 3368(FADT, FACS, DSDT). BZ 477 3369 3370Added #pragma pack(8/4) to acobject.h to ensure that the structures in this 3371header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been 3372manually optimized to be aligned and will not work if it is byte-packed. 3373 3374Example Code and Data Size: These are the sizes for the OS-independent 3375acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3376debug version of the code includes the debug output trace mechanism and has 3377a much larger code and data size. 3378 3379 Previous Release: 3380 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 3381 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 3382 Current Release: 3383 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 3384 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 3385 3386 33872) iASL Compiler/Disassembler and Tools: 3388 3389Fixed a problem where the presence of the _OSI predefined control method 3390within complex expressions could cause an internal compiler error. 3391 3392AcpiExec: Implemented full region support for multiple address spaces. 3393SpaceId is now part of the REGION object. BZ 429 3394 3395---------------------------------------- 339611 October 2006. Summary of changes for version 20061011: 3397 33981) ACPI CA Core Subsystem: 3399 3400Completed an AML interpreter performance enhancement for control method 3401execution. Previously a 2-pass parse/execution, control methods are now 3402completely parsed and executed in a single pass. This improves overall 3403interpreter performance by ~25%, reduces code size, and reduces CPU stack 3404use. (Valery Podrezov + interpreter changes in version 20051202 that 3405eliminated namespace loading during the pass one parse.) 3406 3407Implemented _CID support for PCI Root Bridge detection. If the _HID does not 3408match the predefined PCI Root Bridge IDs, the _CID list (if present) is now 3409obtained and also checked for an ID match. 3410 3411Implemented additional support for the PCI _ADR execution: upsearch until a 3412device scope is found before executing _ADR. This allows PCI_Config 3413operation regions to be declared locally within control methods underneath 3414PCI device objects. 3415 3416Fixed a problem with a possible race condition between threads executing 3417AcpiWalkNamespace and the AML interpreter. This condition was removed by 3418modifying AcpiWalkNamespace to (by default) ignore all temporary namespace 3419entries created during any concurrent control method execution. An 3420additional namespace race condition is known to exist between 3421AcpiWalkNamespace and the Load/Unload ASL operators and is still under 3422investigation. 3423 3424Restructured the AML ParseLoop function, breaking it into several 3425subfunctions in order to reduce CPU stack use and improve maintainability. 3426(Mikhail Kouzmich) 3427 3428AcpiGetHandle: Fix for parameter validation to detect invalid combinations 3429of prefix handle and pathname. BZ 478 3430 3431Example Code and Data Size: These are the sizes for the OS-independent 3432acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3433debug version of the code includes the debug output trace mechanism and has 3434a much larger code and data size. 3435 3436 Previous Release: 3437 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 3438 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 3439 Current Release: 3440 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 3441 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 3442 34432) iASL Compiler/Disassembler and Tools: 3444 3445Ported the -g option (get local ACPI tables) to the new ACPICA Table Manager 3446to restore original behavior. 3447 3448---------------------------------------- 344927 September 2006. Summary of changes for version 20060927: 3450 34511) ACPI CA Core Subsystem: 3452 3453Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister. 3454These functions now use a spinlock for mutual exclusion and the interrupt 3455level indication flag is not needed. 3456 3457Fixed a problem with the Global Lock where the lock could appear to be 3458obtained before it is actually obtained. The global lock semaphore was 3459inadvertently created with one unit instead of zero units. (BZ 464) Fiodor 3460Suietov. 3461 3462Fixed a possible memory leak and fault in AcpiExResolveObjectToValue during 3463a read from a buffer or region field. (BZ 458) Fiodor Suietov. 3464 3465Example Code and Data Size: These are the sizes for the OS-independent 3466acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3467debug version of the code includes the debug output trace mechanism and has 3468a much larger code and data size. 3469 3470 Previous Release: 3471 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 3472 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 3473 Current Release: 3474 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 3475 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 3476 3477 34782) iASL Compiler/Disassembler and Tools: 3479 3480Fixed a compilation problem with the pre-defined Resource Descriptor field 3481names where an "object does not exist" error could be incorrectly generated 3482if the parent ResourceTemplate pathname places the template within a 3483different namespace scope than the current scope. (BZ 7212) 3484 3485Fixed a problem where the compiler could hang after syntax errors detected 3486in an ElseIf construct. (BZ 453) 3487 3488Fixed a problem with the AmlFilename parameter to the DefinitionBlock() 3489operator. An incorrect output filename was produced when this parameter was 3490a null string (""). Now, the original input filename is used as the AML 3491output filename, with an ".aml" extension. 3492 3493Implemented a generic batch command mode for the AcpiExec utility (execute 3494any AML debugger command) (Valery Podrezov). 3495 3496---------------------------------------- 349712 September 2006. Summary of changes for version 20060912: 3498 34991) ACPI CA Core Subsystem: 3500 3501Enhanced the implementation of the "serialized mode" of the interpreter 3502(enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is 3503specified, instead of creating a serialization semaphore per control method, 3504the interpreter lock is simply no longer released before a blocking 3505operation during control method execution. This effectively makes the AML 3506Interpreter single-threaded. The overhead of a semaphore per-method is 3507eliminated. 3508 3509Fixed a regression where an error was no longer emitted if a control method 3510attempts to create 2 objects of the same name. This once again returns 3511AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism that 3512will dynamically serialize the control method to possible prevent future 3513errors. (BZ 440) 3514 3515Integrated a fix for a problem with PCI Express HID detection in the PCI 3516Config Space setup procedure. (BZ 7145) 3517 3518Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the 3519AcpiHwInitialize function - the FADT registers are now validated when the 3520table is loaded. 3521 3522Added two new warnings during FADT verification - 1) if the FADT is larger 3523than the largest known FADT version, and 2) if there is a mismatch between a 352432-bit block address and the 64-bit X counterpart (when both are non-zero.) 3525 3526Example Code and Data Size: These are the sizes for the OS-independent 3527acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3528debug version of the code includes the debug output trace mechanism and has 3529a much larger code and data size. 3530 3531 Previous Release: 3532 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 3533 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 3534 Current Release: 3535 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 3536 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 3537 3538 35392) iASL Compiler/Disassembler and Tools: 3540 3541Fixed a problem with the implementation of the Switch() operator where the 3542temporary variable was declared too close to the actual Switch, instead of 3543at method level. This could cause a problem if the Switch() operator is 3544within a while loop, causing an error on the second iteration. (BZ 460) 3545 3546Disassembler - fix for error emitted for unknown type for target of scope 3547operator. Now, ignore it and continue. 3548 3549Disassembly of an FADT now verifies the input FADT and reports any errors 3550found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs. 3551 3552Disassembly of raw data buffers with byte initialization data now prefixes 3553each output line with the current buffer offset. 3554 3555Disassembly of ASF! table now includes all variable-length data fields at 3556the end of some of the subtables. 3557 3558The disassembler now emits a comment if a buffer appears to be a 3559ResourceTemplate, but cannot be disassembled as such because the EndTag does 3560not appear at the very end of the buffer. 3561 3562AcpiExec - Added the "-t" command line option to enable the serialized mode 3563of the AML interpreter. 3564 3565---------------------------------------- 356631 August 2006. Summary of changes for version 20060831: 3567 35681) ACPI CA Core Subsystem: 3569 3570Miscellaneous fixes for the Table Manager: 3571- Correctly initialize internal common FADT for all 64-bit "X" fields 3572- Fixed a couple table mapping issues during table load 3573- Fixed a couple alignment issues for IA64 3574- Initialize input array to zero in AcpiInitializeTables 3575- Additional parameter validation for AcpiGetTable, AcpiGetTableHeader, 3576AcpiGetTableByIndex 3577 3578Change for GPE support: when a "wake" GPE is received, all wake GPEs are now 3579immediately disabled to prevent the waking GPE from firing again and to 3580prevent other wake GPEs from interrupting the wake process. 3581 3582Added the AcpiGpeCount global that tracks the number of processed GPEs, to 3583be used for debugging systems with a large number of ACPI interrupts. 3584 3585Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in 3586both the ACPICA headers and the disassembler. 3587 3588Example Code and Data Size: These are the sizes for the OS-independent 3589acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3590debug version of the code includes the debug output trace mechanism and has 3591a much larger code and data size. 3592 3593 Previous Release: 3594 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 3595 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 3596 Current Release: 3597 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 3598 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 3599 3600 36012) iASL Compiler/Disassembler and Tools: 3602 3603Disassembler support for the DMAR ACPI table. 3604 3605---------------------------------------- 360623 August 2006. Summary of changes for version 20060823: 3607 36081) ACPI CA Core Subsystem: 3609 3610The Table Manager component has been completely redesigned and 3611reimplemented. The new design is much simpler, and reduces the overall code 3612and data size of the kernel-resident ACPICA by approximately 5%. Also, it is 3613now possible to obtain the ACPI tables very early during kernel 3614initialization, even before dynamic memory management is initialized. 3615(Alexey Starikovskiy, Fiodor Suietov, Bob Moore) 3616 3617Obsolete ACPICA interfaces: 3618 3619- AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel init 3620time). 3621- AcpiLoadTable: Not needed. 3622- AcpiUnloadTable: Not needed. 3623 3624New ACPICA interfaces: 3625 3626- AcpiInitializeTables: Must be called before the table manager can be used. 3627- AcpiReallocateRootTable: Used to transfer the root table to dynamically 3628allocated memory after it becomes available. 3629- AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI tables 3630in the RSDT/XSDT. 3631 3632Other ACPICA changes: 3633 3634- AcpiGetTableHeader returns the actual mapped table header, not a copy. Use 3635AcpiOsUnmapMemory to free this mapping. 3636- AcpiGetTable returns the actual mapped table. The mapping is managed 3637internally and must not be deleted by the caller. Use of this interface 3638causes no additional dynamic memory allocation. 3639- AcpiFindRootPointer: Support for physical addressing has been eliminated, 3640it appeared to be unused. 3641- The interface to AcpiOsMapMemory has changed to be consistent with the 3642other allocation interfaces. 3643- The interface to AcpiOsGetRootPointer has changed to eliminate unnecessary 3644parameters. 3645- ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on 64- 3646bit platforms. Was previously 64 bits on all platforms. 3647- The interface to the ACPI Global Lock acquire/release macros have changed 3648slightly since ACPICA no longer keeps a local copy of the FACS with a 3649constructed pointer to the actual global lock. 3650 3651Porting to the new table manager: 3652 3653- AcpiInitializeTables: Must be called once, and can be called anytime 3654during the OS initialization process. It allows the host to specify an area 3655of memory to be used to store the internal version of the RSDT/XSDT (root 3656table). This allows the host to access ACPI tables before memory management 3657is initialized and running. 3658- AcpiReallocateRootTable: Can be called after memory management is running 3659to copy the root table to a dynamically allocated array, freeing up the 3660scratch memory specified in the call to AcpiInitializeTables. 3661- AcpiSubsystemInitialize: This existing interface is independent of the 3662Table Manager, and does not have to be called before the Table Manager can 3663be used, it only must be called before the rest of ACPICA can be used. 3664- ACPI Tables: Some changes have been made to the names and structure of the 3665actbl.h and actbl1.h header files and may require changes to existing code. 3666For example, bitfields have been completely removed because of their lack of 3667portability across C compilers. 3668- Update interfaces to the Global Lock acquire/release macros if local 3669versions are used. (see acwin.h) 3670 3671Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c 3672 3673New files: tbfind.c 3674 3675Example Code and Data Size: These are the sizes for the OS-independent 3676acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3677debug version of the code includes the debug output trace mechanism and has 3678a much larger code and data size. 3679 3680 Previous Release: 3681 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 3682 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 3683 Current Release: 3684 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 3685 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 3686 3687 36882) iASL Compiler/Disassembler and Tools: 3689 3690No changes for this release. 3691 3692---------------------------------------- 369321 July 2006. Summary of changes for version 20060721: 3694 36951) ACPI CA Core Subsystem: 3696 3697The full source code for the ASL test suite used to validate the iASL 3698compiler and the ACPICA core subsystem is being released with the ACPICA 3699source for the first time. The source is contained in a separate package and 3700consists of over 1100 files that exercise all ASL/AML operators. The package 3701should appear on the Intel/ACPI web site shortly. (Valery Podrezov, Fiodor 3702Suietov) 3703 3704Completed a new design and implementation for support of the ACPI Global 3705Lock. On the OS side, the global lock is now treated as a standard AML 3706mutex. Previously, multiple OS threads could "acquire" the global lock 3707simultaneously. However, this could cause the BIOS to be starved out of the 3708lock - especially in cases such as the Embedded Controller driver where 3709there is a tight coupling between the OS and the BIOS. 3710 3711Implemented an optimization for the ACPI Global Lock interrupt mechanism. 3712The Global Lock interrupt handler no longer queues the execution of a 3713separate thread to signal the global lock semaphore. Instead, the semaphore 3714is signaled directly from the interrupt handler. 3715 3716Implemented support within the AML interpreter for package objects that 3717contain a larger AML length (package list length) than the package element 3718count. In this case, the length of the package is truncated to match the 3719package element count. Some BIOS code apparently modifies the package length 3720on the fly, and this change supports this behavior. Provides compatibility 3721with the MS AML interpreter. (With assistance from Fiodor Suietov) 3722 3723Implemented a temporary fix for the BankValue parameter of a Bank Field to 3724support all constant values, now including the Zero and One opcodes. 3725Evaluation of this parameter must eventually be converted to a full TermArg 3726evaluation. A not-implemented error is now returned (temporarily) for non- 3727constant values for this parameter. 3728 3729Fixed problem reports (Fiodor Suietov) integrated: 3730- Fix for premature object deletion after CopyObject on Operation Region (BZ 3731350) 3732 3733Example Code and Data Size: These are the sizes for the OS-independent 3734acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3735debug version of the code includes the debug output trace mechanism and has 3736a much larger code and data size. 3737 3738 Previous Release: 3739 Non-Debug Version: 80.7K Code, 18.0K Data, 98.7K Total 3740 Debug Version: 160.9K Code, 65.1K Data, 226.0K Total 3741 Current Release: 3742 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 3743 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 3744 3745 37462) iASL Compiler/Disassembler and Tools: 3747 3748No changes for this release. 3749 3750---------------------------------------- 375107 July 2006. Summary of changes for version 20060707: 3752 37531) ACPI CA Core Subsystem: 3754 3755Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers 3756that do not allow the initialization of address pointers within packed 3757structures - even though the hardware itself may support misaligned 3758transfers. Some of the debug data structures are packed by default to 3759minimize size. 3760 3761Added an error message for the case where AcpiOsGetThreadId() returns zero. 3762A non-zero value is required by the core ACPICA code to ensure the proper 3763operation of AML mutexes and recursive control methods. 3764 3765The DSDT is now the only ACPI table that determines whether the AML 3766interpreter is in 32-bit or 64-bit mode. Not really a functional change, but 3767the hooks for per-table 32/64 switching have been removed from the code. A 3768clarification to the ACPI specification is forthcoming in ACPI 3.0B. 3769 3770Fixed a possible leak of an OwnerID in the error path of 3771AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID 3772deletion to a single place in AcpiTbUninstallTable to correct possible leaks 3773when using the AcpiTbDeleteTablesByType interface (with assistance from 3774Lance Ortiz.) 3775 3776Fixed a problem with Serialized control methods where the semaphore 3777associated with the method could be over-signaled after multiple method 3778invocations. 3779 3780Fixed two issues with the locking of the internal namespace data structure. 3781Both the Unload() operator and AcpiUnloadTable interface now lock the 3782namespace during the namespace deletion associated with the table unload 3783(with assistance from Linn Crosetto.) 3784 3785Fixed problem reports (Valery Podrezov) integrated: 3786- Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426) 3787 3788Fixed problem reports (Fiodor Suietov) integrated: 3789- Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369) 3790- On Address Space handler deletion, needless deactivation call (BZ 374) 3791- AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ 375) 3792- Possible memory leak, Notify sub-objects of Processor, Power, ThermalZone 3793(BZ 376) 3794- AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378) 3795- Minimum Length of RSDT should be validated (BZ 379) 3796- AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no 3797Handler (BZ (380) 3798- AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type loaded 3799(BZ 381) 3800 3801Example Code and Data Size: These are the sizes for the OS-independent 3802acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3803debug version of the code includes the debug output trace mechanism and has 3804a much larger code and data size. 3805 3806 Previous Release: 3807 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 3808 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 3809 Current Release: 3810 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 3811 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 3812 3813 38142) iASL Compiler/Disassembler and Tools: 3815 3816Fixed problem reports: 3817Compiler segfault when ASL contains a long (>1024) String declaration (BZ 3818436) 3819 3820---------------------------------------- 382123 June 2006. Summary of changes for version 20060623: 3822 38231) ACPI CA Core Subsystem: 3824 3825Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This 3826allows the type to be customized to the host OS for improved efficiency 3827(since a spinlock is usually a very small object.) 3828 3829Implemented support for "ignored" bits in the ACPI registers. According to 3830the ACPI specification, these bits should be preserved when writing the 3831registers via a read/modify/write cycle. There are 3 bits preserved in this 3832manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11]. 3833 3834Implemented the initial deployment of new OSL mutex interfaces. Since some 3835host operating systems have separate mutex and semaphore objects, this 3836feature was requested. The base code now uses mutexes (and the new mutex 3837interfaces) wherever a binary semaphore was used previously. However, for 3838the current release, the mutex interfaces are defined as macros to map them 3839to the existing semaphore interfaces. Therefore, no OSL changes are required 3840at this time. (See acpiosxf.h) 3841 3842Fixed several problems with the support for the control method SyncLevel 3843parameter. The SyncLevel now works according to the ACPI specification and 3844in concert with the Mutex SyncLevel parameter, since the current SyncLevel 3845is a property of the executing thread. Mutual exclusion for control methods 3846is now implemented with a mutex instead of a semaphore. 3847 3848Fixed three instances of the use of the C shift operator in the bitfield 3849support code (exfldio.c) to avoid the use of a shift value larger than the 3850target data width. The behavior of C compilers is undefined in this case and 3851can cause unpredictable results, and therefore the case must be detected and 3852avoided. (Fiodor Suietov) 3853 3854Added an info message whenever an SSDT or OEM table is loaded dynamically 3855via the Load() or LoadTable() ASL operators. This should improve debugging 3856capability since it will show exactly what tables have been loaded (beyond 3857the tables present in the RSDT/XSDT.) 3858 3859Example Code and Data Size: These are the sizes for the OS-independent 3860acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3861debug version of the code includes the debug output trace mechanism and has 3862a much larger code and data size. 3863 3864 Previous Release: 3865 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 3866 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 3867 Current Release: 3868 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 3869 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 3870 3871 38722) iASL Compiler/Disassembler and Tools: 3873 3874No changes for this release. 3875 3876---------------------------------------- 387708 June 2006. Summary of changes for version 20060608: 3878 38791) ACPI CA Core Subsystem: 3880 3881Converted the locking mutex used for the ACPI hardware to a spinlock. This 3882change should eliminate all problems caused by attempting to acquire a 3883semaphore at interrupt level, and it means that all ACPICA external 3884interfaces that directly access the ACPI hardware can be safely called from 3885interrupt level. OSL code that implements the semaphore interfaces should be 3886able to eliminate any workarounds for being called at interrupt level. 3887 3888Fixed a regression introduced in 20060526 where the ACPI device 3889initialization could be prematurely aborted with an AE_NOT_FOUND if a device 3890did not have an optional _INI method. 3891 3892Fixed an IndexField issue where a write to the Data Register should be 3893limited in size to the AccessSize (width) of the IndexField itself. (BZ 433, 3894Fiodor Suietov) 3895 3896Fixed problem reports (Valery Podrezov) integrated: 3897- Allow store of ThermalZone objects to Debug object (BZ 5369/5370) 3898 3899Fixed problem reports (Fiodor Suietov) integrated: 3900- AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364) 3901 3902Removed four global mutexes that were obsolete and were no longer being 3903used. 3904 3905Example Code and Data Size: These are the sizes for the OS-independent 3906acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3907debug version of the code includes the debug output trace mechanism and has 3908a much larger code and data size. 3909 3910 Previous Release: 3911 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 3912 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 3913 Current Release: 3914 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 3915 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 3916 3917 39182) iASL Compiler/Disassembler and Tools: 3919 3920Fixed a fault when using -g option (get tables from registry) on Windows 3921machines. 3922 3923Fixed problem reports integrated: 3924- Generate error if CreateField NumBits parameter is zero. (BZ 405) 3925- Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor 3926Suietov) 3927- Global table revision override (-r) is ignored (BZ 413) 3928 3929---------------------------------------- 393026 May 2006. Summary of changes for version 20060526: 3931 39321) ACPI CA Core Subsystem: 3933 3934Restructured, flattened, and simplified the internal interfaces for 3935namespace object evaluation - resulting in smaller code, less CPU stack use, 3936and fewer interfaces. (With assistance from Mikhail Kouzmich) 3937 3938Fixed a problem with the CopyObject operator where the first parameter was 3939not typed correctly for the parser, interpreter, compiler, and disassembler. 3940Caused various errors and unexpected behavior. 3941 3942Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits 3943produced incorrect results with some C compilers. Since the behavior of C 3944compilers when the shift value is larger than the datatype width is 3945apparently not well defined, the interpreter now detects this condition and 3946simply returns zero as expected in all such cases. (BZ 395) 3947 3948Fixed problem reports (Valery Podrezov) integrated: 3949- Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329) 3950- Allow interpreter to handle nested method declarations (BZ 5361) 3951 3952Fixed problem reports (Fiodor Suietov) integrated: 3953- AcpiTerminate doesn't free debug memory allocation list objects (BZ 355) 3954- After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ 356) 3955- AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357) 3956- Resource Manager should return AE_TYPE for non-device objects (BZ 358) 3957- Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359) 3958- Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360) 3959- Incomplete cleanup branch in AcpiPsParseAml (BZ 361) 3960- Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362) 3961- AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ 365) 3962- Status of the Global Initialization Handler call not used (BZ 366) 3963- Incorrect object parameter to Global Initialization Handler (BZ 367) 3964 3965Example Code and Data Size: These are the sizes for the OS-independent 3966acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3967debug version of the code includes the debug output trace mechanism and has 3968a much larger code and data size. 3969 3970 Previous Release: 3971 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 3972 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 3973 Current Release: 3974 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 3975 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 3976 3977 39782) iASL Compiler/Disassembler and Tools: 3979 3980Modified the parser to allow the names IO, DMA, and IRQ to be used as 3981namespace identifiers with no collision with existing resource descriptor 3982macro names. This provides compatibility with other ASL compilers and is 3983most useful for disassembly/recompilation of existing tables without parse 3984errors. (With assistance from Thomas Renninger) 3985 3986Disassembler: fixed an incorrect disassembly problem with the 3987DataTableRegion and CopyObject operators. Fixed a possible fault during 3988disassembly of some Alias operators. 3989 3990---------------------------------------- 399112 May 2006. Summary of changes for version 20060512: 3992 39931) ACPI CA Core Subsystem: 3994 3995Replaced the AcpiOsQueueForExecution interface with a new interface named 3996AcpiOsExecute. The major difference is that the new interface does not have 3997a Priority parameter, this appeared to be useless and has been replaced by a 3998Type parameter. The Type tells the host what type of execution is being 3999requested, such as global lock handler, notify handler, GPE handler, etc. 4000This allows the host to queue and execute the request as appropriate for the 4001request type, possibly using different work queues and different priorities 4002for the various request types. This enables fixes for multithreading 4003deadlock problems such as BZ #5534, and will require changes to all existing 4004OS interface layers. (Alexey Starikovskiy and Bob Moore) 4005 4006Fixed a possible memory leak associated with the support for the so-called 4007"implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor 4008Suietov) 4009 4010Fixed a problem with the Load() operator where a table load from an 4011operation region could overwrite an internal table buffer by up to 7 bytes 4012and cause alignment faults on IPF systems. (With assistance from Luming Yu) 4013 4014Example Code and Data Size: These are the sizes for the OS-independent 4015acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4016debug version of the code includes the debug output trace mechanism and has 4017a much larger code and data size. 4018 4019 Previous Release: 4020 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 4021 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 4022 Current Release: 4023 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 4024 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 4025 4026 4027 40282) iASL Compiler/Disassembler and Tools: 4029 4030Disassembler: Implemented support to cross reference the internal namespace 4031and automatically generate ASL External() statements for symbols not defined 4032within the current table being disassembled. This will simplify the 4033disassembly and recompilation of interdependent tables such as SSDTs since 4034these statements will no longer have to be added manually. 4035 4036Disassembler: Implemented experimental support to automatically detect 4037invocations of external control methods and generate appropriate External() 4038statements. This is problematic because the AML cannot be correctly parsed 4039until the number of arguments for each control method is known. Currently, 4040standalone method invocations and invocations as the source operand of a 4041Store() statement are supported. 4042 4043Disassembler: Implemented support for the ASL pseudo-operators LNotEqual, 4044LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()), 4045LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code 4046more readable and likely closer to the original ASL source. 4047 4048---------------------------------------- 404921 April 2006. Summary of changes for version 20060421: 4050 40511) ACPI CA Core Subsystem: 4052 4053Removed a device initialization optimization introduced in 20051216 where 4054the _STA method was not run unless an _INI was also present for the same 4055device. This optimization could cause problems because it could allow _INI 4056methods to be run within a not-present device subtree. (If a not-present 4057device had no _INI, _STA would not be run, the not-present status would not 4058be discovered, and the children of the device would be incorrectly 4059traversed.) 4060 4061Implemented a new _STA optimization where namespace subtrees that do not 4062contain _INI are identified and ignored during device initialization. 4063Selectively running _STA can significantly improve boot time on large 4064machines (with assistance from Len Brown.) 4065 4066Implemented support for the device initialization case where the returned 4067_STA flags indicate a device not-present but functioning. In this case, _INI 4068is not run, but the device children are examined for presence, as per the 4069ACPI specification. 4070 4071Implemented an additional change to the IndexField support in order to 4072conform to MS behavior. The value written to the Index Register is not 4073simply a byte offset, it is a byte offset in units of the access width of 4074the parent Index Field. (Fiodor Suietov) 4075 4076Defined and deployed a new OSL interface, AcpiOsValidateAddress. This 4077interface is called during the creation of all AML operation regions, and 4078allows the host OS to exert control over what addresses it will allow the 4079AML code to access. Operation Regions whose addresses are disallowed will 4080cause a runtime exception when they are actually accessed (will not affect 4081or abort table loading.) See oswinxf or osunixxf for an example 4082implementation. 4083 4084Defined and deployed a new OSL interface, AcpiOsValidateInterface. This 4085interface allows the host OS to match the various "optional" 4086interface/behavior strings for the _OSI predefined control method as 4087appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf 4088for an example implementation. 4089 4090Restructured and corrected various problems in the exception handling code 4091paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod 4092(with assistance from Takayoshi Kochi.) 4093 4094Modified the Linux source converter to ignore quoted string literals while 4095converting identifiers from mixed to lower case. This will correct problems 4096with the disassembler and other areas where such strings must not be 4097modified. 4098 4099The ACPI_FUNCTION_* macros no longer require quotes around the function 4100name. This allows the Linux source converter to convert the names, now that 4101the converter ignores quoted strings. 4102 4103Example Code and Data Size: These are the sizes for the OS-independent 4104acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4105debug version of the code includes the debug output trace mechanism and has 4106a much larger code and data size. 4107 4108 Previous Release: 4109 4110 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 4111 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 4112 Current Release: 4113 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 4114 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 4115 4116 41172) iASL Compiler/Disassembler and Tools: 4118 4119Implemented 3 new warnings for iASL, and implemented multiple warning levels 4120(w2 flag). 4121 41221) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is not 4123WAIT_FOREVER (0xFFFF) and the code does not examine the return value to 4124check for the possible timeout, a warning is issued. 4125 41262) Useless operators: If an ASL operator does not specify an optional target 4127operand and it also does not use the function return value from the 4128operator, a warning is issued since the operator effectively does nothing. 4129 41303) Unreferenced objects: If a namespace object is created, but never 4131referenced, a warning is issued. This is a warning level 2 since there are 4132cases where this is ok, such as when a secondary table is loaded that uses 4133the unreferenced objects. Even so, care is taken to only flag objects that 4134don't look like they will ever be used. For example, the reserved methods 4135(starting with an underscore) are usually not referenced because it is 4136expected that the OS will invoke them. 4137 4138---------------------------------------- 413931 March 2006. Summary of changes for version 20060331: 4140 41411) ACPI CA Core Subsystem: 4142 4143Implemented header file support for the following additional ACPI tables: 4144ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this support, 4145all current and known ACPI tables are now defined in the ACPICA headers and 4146are available for use by device drivers and other software. 4147 4148Implemented support to allow tables that contain ACPI names with invalid 4149characters to be loaded. Previously, this would cause the table load to 4150fail, but since there are several known cases of such tables on existing 4151machines, this change was made to enable ACPI support for them. Also, this 4152matches the behavior of the Microsoft ACPI implementation. 4153 4154Fixed a couple regressions introduced during the memory optimization in the 415520060317 release. The namespace node definition required additional 4156reorganization and an internal datatype that had been changed to 8-bit was 4157restored to 32-bit. (Valery Podrezov) 4158 4159Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState 4160could be passed through to AcpiOsReleaseObject which is unexpected. Such 4161null pointers are now trapped and ignored, matching the behavior of the 4162previous implementation before the deployment of AcpiOsReleaseObject. 4163(Valery Podrezov, Fiodor Suietov) 4164 4165Fixed a memory mapping leak during the deletion of a SystemMemory operation 4166region where a cached memory mapping was not deleted. This became a 4167noticeable problem for operation regions that are defined within frequently 4168used control methods. (Dana Meyers) 4169 4170Reorganized the ACPI table header files into two main files: one for the 4171ACPI tables consumed by the ACPICA core, and another for the miscellaneous 4172ACPI tables that are consumed by the drivers and other software. The various 4173FADT definitions were merged into one common section and three different 4174tables (ACPI 1.0, 1.0+, and 2.0) 4175 4176Example Code and Data Size: These are the sizes for the OS-independent 4177acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4178debug version of the code includes the debug output trace mechanism and has 4179a much larger code and data size. 4180 4181 Previous Release: 4182 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 4183 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 4184 Current Release: 4185 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 4186 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 4187 4188 41892) iASL Compiler/Disassembler and Tools: 4190 4191Disassembler: Implemented support to decode and format all non-AML ACPI 4192tables (tables other than DSDTs and SSDTs.) This includes the new tables 4193added to the ACPICA headers, therefore all current and known ACPI tables are 4194supported. 4195 4196Disassembler: The change to allow ACPI names with invalid characters also 4197enables the disassembly of such tables. Invalid characters within names are 4198changed to '*' to make the name printable; the iASL compiler will still 4199generate an error for such names, however, since this is an invalid ACPI 4200character. 4201 4202Implemented an option for AcpiXtract (-a) to extract all tables found in the 4203input file. The default invocation extracts only the DSDTs and SSDTs. 4204 4205Fixed a couple of gcc generation issues for iASL and AcpiExec and added a 4206makefile for the AcpiXtract utility. 4207 4208---------------------------------------- 420917 March 2006. Summary of changes for version 20060317: 4210 42111) ACPI CA Core Subsystem: 4212 4213Implemented the use of a cache object for all internal namespace nodes. 4214Since there are about 1000 static nodes in a typical system, this will 4215decrease memory use for cache implementations that minimize per-allocation 4216overhead (such as a slab allocator.) 4217 4218Removed the reference count mechanism for internal namespace nodes, since it 4219was deemed unnecessary. This reduces the size of each namespace node by 4220about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit case, 4221and 32 bytes for the 64-bit case. 4222 4223Optimized several internal data structures to reduce object size on 64-bit 4224platforms by packing data within the 64-bit alignment. This includes the 4225frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static 4226instances corresponding to the namespace objects. 4227 4228Added two new strings for the predefined _OSI method: "Windows 2001.1 SP1" 4229and "Windows 2006". 4230 4231Split the allocation tracking mechanism out to a separate file, from 4232utalloc.c to uttrack.c. This mechanism appears to be only useful for 4233application-level code. Kernels may wish to not include uttrack.c in 4234distributions. 4235 4236Removed all remnants of the obsolete ACPI_REPORT_* macros and the associated 4237code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING 4238macros.) 4239 4240Code and Data Size: These are the sizes for the acpica.lib produced by the 4241Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI 4242driver or OSPM code. The debug version of the code includes the debug output 4243trace mechanism and has a much larger code and data size. Note that these 4244values will vary depending on the efficiency of the compiler and the 4245compiler options used during generation. 4246 4247 Previous Release: 4248 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 4249 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 4250 Current Release: 4251 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 4252 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 4253 4254 42552) iASL Compiler/Disassembler and Tools: 4256 4257Implemented an ANSI C version of the acpixtract utility. This version will 4258automatically extract the DSDT and all SSDTs from the input acpidump text 4259file and dump the binary output to separate files. It can also display a 4260summary of the input file including the headers for each table found and 4261will extract any single ACPI table, with any signature. (See 4262source/tools/acpixtract) 4263 4264---------------------------------------- 426510 March 2006. Summary of changes for version 20060310: 4266 42671) ACPI CA Core Subsystem: 4268 4269Tagged all external interfaces to the subsystem with the new 4270ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to assist 4271kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL 4272macro. The default definition is NULL. 4273 4274Added the ACPI_THREAD_ID type for the return value from AcpiOsGetThreadId. 4275This allows the host to define this as necessary to simplify kernel 4276integration. The default definition is ACPI_NATIVE_UINT. 4277 4278Fixed two interpreter problems related to error processing, the deletion of 4279objects, and placing invalid pointers onto the internal operator result 4280stack. BZ 6028, 6151 (Valery Podrezov) 4281 4282Increased the reference count threshold where a warning is emitted for large 4283reference counts in order to eliminate unnecessary warnings on systems with 4284large namespaces (especially 64-bit.) Increased the value from 0x400 to 42850x800. 4286 4287Due to universal disagreement as to the meaning of the 'c' in the calloc() 4288function, the ACPI_MEM_CALLOCATE macro has been renamed to 4289ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'. 4290ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and 4291ACPI_FREE. 4292 4293Code and Data Size: These are the sizes for the acpica.lib produced by the 4294Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI 4295driver or OSPM code. The debug version of the code includes the debug output 4296trace mechanism and has a much larger code and data size. Note that these 4297values will vary depending on the efficiency of the compiler and the 4298compiler options used during generation. 4299 4300 Previous Release: 4301 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 4302 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 4303 Current Release: 4304 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 4305 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 4306 4307 43082) iASL Compiler/Disassembler: 4309 4310Disassembler: implemented support for symbolic resource descriptor 4311references. If a CreateXxxxField operator references a fixed offset within a 4312resource descriptor, a name is assigned to the descriptor and the offset is 4313translated to the appropriate resource tag and pathname. The addition of 4314this support brings the disassembled code very close to the original ASL 4315source code and helps eliminate run-time errors when the disassembled code 4316is modified (and recompiled) in such a way as to invalidate the original 4317fixed offsets. 4318 4319Implemented support for a Descriptor Name as the last parameter to the ASL 4320Register() macro. This parameter was inadvertently left out of the ACPI 4321specification, and will be added for ACPI 3.0b. 4322 4323Fixed a problem where the use of the "_OSI" string (versus the full path 4324"\_OSI") caused an internal compiler error. ("No back ptr to op") 4325 4326Fixed a problem with the error message that occurs when an invalid string is 4327used for a _HID object (such as one with an embedded asterisk: "*PNP010A".) 4328The correct message is now displayed. 4329 4330---------------------------------------- 433117 February 2006. Summary of changes for version 20060217: 4332 43331) ACPI CA Core Subsystem: 4334 4335Implemented a change to the IndexField support to match the behavior of the 4336Microsoft AML interpreter. The value written to the Index register is now a 4337byte offset, no longer an index based upon the width of the Data register. 4338This should fix IndexField problems seen on some machines where the Data 4339register is not exactly one byte wide. The ACPI specification will be 4340clarified on this point. 4341 4342Fixed a problem where several resource descriptor types could overrun the 4343internal descriptor buffer due to size miscalculation: VendorShort, 4344VendorLong, and Interrupt. This was noticed on IA64 machines, but could 4345affect all platforms. 4346 4347Fixed a problem where individual resource descriptors were misaligned within 4348the internal buffer, causing alignment faults on IA64 platforms. 4349 4350Code and Data Size: These are the sizes for the acpica.lib produced by the 4351Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI 4352driver or OSPM code. The debug version of the code includes the debug output 4353trace mechanism and has a much larger code and data size. Note that these 4354values will vary depending on the efficiency of the compiler and the 4355compiler options used during generation. 4356 4357 Previous Release: 4358 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 4359 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 4360 Current Release: 4361 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 4362 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 4363 4364 43652) iASL Compiler/Disassembler: 4366 4367Implemented support for new reserved names: _WDG and _WED are Microsoft 4368extensions for Windows Instrumentation Management, _TDL is a new ACPI- 4369defined method (Throttling Depth Limit.) 4370 4371Fixed a problem where a zero-length VendorShort or VendorLong resource 4372descriptor was incorrectly emitted as a descriptor of length one. 4373 4374---------------------------------------- 437510 February 2006. Summary of changes for version 20060210: 4376 43771) ACPI CA Core Subsystem: 4378 4379Removed a couple of extraneous ACPI_ERROR messages that appeared during 4380normal execution. These became apparent after the conversion from 4381ACPI_DEBUG_PRINT. 4382 4383Fixed a problem where the CreateField operator could hang if the BitIndex or 4384NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359) 4385 4386Fixed a problem where a DeRefOf operation on a buffer object incorrectly 4387failed with an exception. This also fixes a couple of related RefOf and 4388DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387) 4389 4390Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead of 4391AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov, BZ 43925480) 4393 4394Implemented a memory cleanup at the end of the execution of each iteration 4395of an AML While() loop, preventing the accumulation of outstanding objects. 4396(Valery Podrezov, BZ 5427) 4397 4398Eliminated a chunk of duplicate code in the object resolution code. (Valery 4399Podrezov, BZ 5336) 4400 4401Fixed several warnings during the 64-bit code generation. 4402 4403The AcpiSrc source code conversion tool now inserts one line of whitespace 4404after an if() statement that is followed immediately by a comment, improving 4405readability of the Linux code. 4406 4407Code and Data Size: The current and previous library sizes for the core 4408subsystem are shown below. These are the code and data sizes for the 4409acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4410values do not include any ACPI driver or OSPM code. The debug version of the 4411code includes the debug output trace mechanism and has a much larger code 4412and data size. Note that these values will vary depending on the efficiency 4413of the compiler and the compiler options used during generation. 4414 4415 Previous Release: 4416 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 4417 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 4418 Current Release: 4419 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 4420 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 4421 4422 44232) iASL Compiler/Disassembler: 4424 4425Fixed a problem with the disassembly of a BankField operator with a complex 4426expression for the BankValue parameter. 4427 4428---------------------------------------- 442927 January 2006. Summary of changes for version 20060127: 4430 44311) ACPI CA Core Subsystem: 4432 4433Implemented support in the Resource Manager to allow unresolved namestring 4434references within resource package objects for the _PRT method. This support 4435is in addition to the previously implemented unresolved reference support 4436within the AML parser. If the interpreter slack mode is enabled, these 4437unresolved references will be passed through to the caller as a NULL package 4438entry. 4439 4440Implemented and deployed new macros and functions for error and warning 4441messages across the subsystem. These macros are simpler and generate less 4442code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION, 4443ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older 4444macros remain defined to allow ACPI drivers time to migrate to the new 4445macros. 4446 4447Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of the 4448Acquire/Release Lock OSL interfaces. 4449 4450Fixed a problem where Alias ASL operators are sometimes not correctly 4451resolved, in both the interpreter and the iASL compiler. 4452 4453Fixed several problems with the implementation of the ConcatenateResTemplate 4454ASL operator. As per the ACPI specification, zero length buffers are now 4455treated as a single EndTag. One-length buffers always cause a fatal 4456exception. Non-zero length buffers that do not end with a full 2-byte EndTag 4457cause a fatal exception. 4458 4459Fixed a possible structure overwrite in the AcpiGetObjectInfo external 4460interface. (With assistance from Thomas Renninger) 4461 4462Code and Data Size: The current and previous library sizes for the core 4463subsystem are shown below. These are the code and data sizes for the 4464acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4465values do not include any ACPI driver or OSPM code. The debug version of the 4466code includes the debug output trace mechanism and has a much larger code 4467and data size. Note that these values will vary depending on the efficiency 4468of the compiler and the compiler options used during generation. 4469 4470 Previous Release: 4471 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 4472 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 4473 Current Release: 4474 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 4475 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 4476 4477 44782) iASL Compiler/Disassembler: 4479 4480Fixed an internal error that was generated for any forward references to ASL 4481Alias objects. 4482 4483---------------------------------------- 448413 January 2006. Summary of changes for version 20060113: 4485 44861) ACPI CA Core Subsystem: 4487 4488Added 2006 copyright to all module headers and signons. This affects 4489virtually every file in the ACPICA core subsystem, iASL compiler, and the 4490utilities. 4491 4492Enhanced the ACPICA error reporting in order to simplify user migration to 4493the non-debug version of ACPICA. Replaced all instances of the 4494ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN debug 4495levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros, 4496respectively. This preserves all error and warning messages in the non-debug 4497version of the ACPICA code (this has been referred to as the "debug lite" 4498option.) Over 200 cases were converted to create a total of over 380 4499error/warning messages across the ACPICA code. This increases the code and 4500data size of the default non-debug version of the code somewhat (about 13K), 4501but all error/warning reporting may be disabled if desired (and code 4502eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time 4503configuration option. The size of the debug version of ACPICA remains about 4504the same. 4505 4506Fixed a memory leak within the AML Debugger "Set" command. One object was 4507not properly deleted for every successful invocation of the command. 4508 4509Code and Data Size: The current and previous library sizes for the core 4510subsystem are shown below. These are the code and data sizes for the 4511acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4512values do not include any ACPI driver or OSPM code. The debug version of the 4513code includes the debug output trace mechanism and has a much larger code 4514and data size. Note that these values will vary depending on the efficiency 4515of the compiler and the compiler options used during generation. 4516 4517 Previous Release: 4518 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 4519 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 4520 Current Release: 4521 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 4522 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 4523 4524 45252) iASL Compiler/Disassembler: 4526 4527The compiler now officially supports the ACPI 3.0a specification that was 4528released on December 30, 2005. (Specification is available at www.acpi.info) 4529 4530---------------------------------------- 453116 December 2005. Summary of changes for version 20051216: 4532 45331) ACPI CA Core Subsystem: 4534 4535Implemented optional support to allow unresolved names within ASL Package 4536objects. A null object is inserted in the package when a named reference 4537cannot be located in the current namespace. Enabled via the interpreter 4538slack flag, this should eliminate AE_NOT_FOUND exceptions seen on machines 4539that contain such code. 4540 4541Implemented an optimization to the initialization sequence that can improve 4542boot time. During ACPI device initialization, the _STA method is now run if 4543and only if the _INI method exists. The _STA method is used to determine if 4544the device is present; An _INI can only be run if _STA returns present, but 4545it is a waste of time to run the _STA method if the _INI does not exist. 4546(Prototype and assistance from Dong Wei) 4547 4548Implemented use of the C99 uintptr_t for the pointer casting macros if it is 4549available in the current compiler. Otherwise, the default (void *) cast is 4550used as before. 4551 4552Fixed some possible memory leaks found within the execution path of the 4553Break, Continue, If, and CreateField operators. (Valery Podrezov) 4554 4555Fixed a problem introduced in the 20051202 release where an exception is 4556generated during method execution if a control method attempts to declare 4557another method. 4558 4559Moved resource descriptor string constants that are used by both the AML 4560disassembler and AML debugger to the common utilities directory so that 4561these components are independent. 4562 4563Implemented support in the AcpiExec utility (-e switch) to globally ignore 4564exceptions during control method execution (method is not aborted.) 4565 4566Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix 4567generation. 4568 4569Code and Data Size: The current and previous library sizes for the core 4570subsystem are shown below. These are the code and data sizes for the 4571acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4572values do not include any ACPI driver or OSPM code. The debug version of the 4573code includes the debug output trace mechanism and has a much larger code 4574and data size. Note that these values will vary depending on the efficiency 4575of the compiler and the compiler options used during generation. 4576 4577 Previous 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 Current Release: 4581 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 4582 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 4583 4584 45852) iASL Compiler/Disassembler: 4586 4587Fixed a problem where a CPU stack overflow fault could occur if a recursive 4588method call was made from within a Return statement. 4589 4590---------------------------------------- 459102 December 2005. Summary of changes for version 20051202: 4592 45931) ACPI CA Core Subsystem: 4594 4595Modified the parsing of control methods to no longer create namespace 4596objects during the first pass of the parse. Objects are now created only 4597during the execute phase, at the moment the namespace creation operator is 4598encountered in the AML (Name, OperationRegion, CreateByteField, etc.) This 4599should eliminate ALREADY_EXISTS exceptions seen on some machines where 4600reentrant control methods are protected by an AML mutex. The mutex will now 4601correctly block multiple threads from attempting to create the same object 4602more than once. 4603 4604Increased the number of available Owner Ids for namespace object tracking 4605from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen on 4606some machines with a large number of ACPI tables (either static or dynamic). 4607 4608Fixed a problem with the AcpiExec utility where a fault could occur when the 4609-b switch (batch mode) is used. 4610 4611Enhanced the namespace dump routine to output the owner ID for each 4612namespace object. 4613 4614Code and Data Size: The current and previous library sizes for the core 4615subsystem are shown below. These are the code and data sizes for the 4616acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4617values do not include any ACPI driver or OSPM code. The debug version of the 4618code includes the debug output trace mechanism and has a much larger code 4619and data size. Note that these values will vary depending on the efficiency 4620of the compiler and the compiler options used during generation. 4621 4622 Previous Release: 4623 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 4624 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 4625 Current Release: 4626 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 4627 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 4628 4629 46302) iASL Compiler/Disassembler: 4631 4632Fixed a parse error during compilation of certain Switch/Case constructs. To 4633simplify the parse, the grammar now allows for multiple Default statements 4634and this error is now detected and flagged during the analysis phase. 4635 4636Disassembler: The disassembly now includes the contents of the original 4637table header within a comment at the start of the file. This includes the 4638name and version of the original ASL compiler. 4639 4640---------------------------------------- 464117 November 2005. Summary of changes for version 20051117: 4642 46431) ACPI CA Core Subsystem: 4644 4645Fixed a problem in the AML parser where the method thread count could be 4646decremented below zero if any errors occurred during the method parse phase. 4647This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some machines. 4648This also fixed a related regression with the mechanism that detects and 4649corrects methods that cannot properly handle reentrancy (related to the 4650deployment of the new OwnerId mechanism.) 4651 4652Eliminated the pre-parsing of control methods (to detect errors) during 4653table load. Related to the problem above, this was causing unwind issues if 4654any errors occurred during the parse, and it seemed to be overkill. A table 4655load should not be aborted if there are problems with any single control 4656method, thus rendering this feature rather pointless. 4657 4658Fixed a problem with the new table-driven resource manager where an internal 4659buffer overflow could occur for small resource templates. 4660 4661Implemented a new external interface, AcpiGetVendorResource. This interface 4662will find and return a vendor-defined resource descriptor within a _CRS or 4663_PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn Helgaas. 4664 4665Removed the length limit (200) on string objects as per the upcoming ACPI 46663.0A specification. This affects the following areas of the interpreter: 1) 4667any implicit conversion of a Buffer to a String, 2) a String object result 4668of the ASL Concatentate operator, 3) the String object result of the ASL 4669ToString operator. 4670 4671Fixed a problem in the Windows OS interface layer (OSL) where a WAIT_FOREVER 4672on a semaphore object would incorrectly timeout. This allows the 4673multithreading features of the AcpiExec utility to work properly under 4674Windows. 4675 4676Updated the Linux makefiles for the iASL compiler and AcpiExec to include 4677the recently added file named "utresrc.c". 4678 4679Code and Data Size: The current and previous library sizes for the core 4680subsystem are shown below. These are the code and data sizes for the 4681acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4682values do not include any ACPI driver or OSPM code. The debug version of the 4683code includes the debug output trace mechanism and has a much larger code 4684and data size. Note that these values will vary depending on the efficiency 4685of the compiler and the compiler options used during generation. 4686 4687 Previous Release: 4688 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 4689 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 4690 Current Release: 4691 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 4692 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 4693 4694 46952) iASL Compiler/Disassembler: 4696 4697Removed the limit (200) on string objects as per the upcoming ACPI 3.0A 4698specification. For the iASL compiler, this means that string literals within 4699the source ASL can be of any length. 4700 4701Enhanced the listing output to dump the AML code for resource descriptors 4702immediately after the ASL code for each descriptor, instead of in a block at 4703the end of the entire resource template. 4704 4705Enhanced the compiler debug output to dump the entire original parse tree 4706constructed during the parse phase, before any transforms are applied to the 4707tree. The transformed tree is dumped also. 4708 4709---------------------------------------- 471002 November 2005. Summary of changes for version 20051102: 4711 47121) ACPI CA Core Subsystem: 4713 4714Modified the subsystem initialization sequence to improve GPE support. The 4715GPE initialization has been split into two parts in order to defer execution 4716of the _PRW methods (Power Resources for Wake) until after the hardware is 4717fully initialized and the SCI handler is installed. This allows the _PRW 4718methods to access fields protected by the Global Lock. This will fix systems 4719where a NO_GLOBAL_LOCK exception has been seen during initialization. 4720 4721Converted the ACPI internal object disassemble and display code within the 4722AML debugger to fully table-driven operation, reducing code size and 4723increasing maintainability. 4724 4725Fixed a regression with the ConcatenateResTemplate() ASL operator introduced 4726in the 20051021 release. 4727 4728Implemented support for "local" internal ACPI object types within the 4729debugger "Object" command and the AcpiWalkNamespace external interfaces. 4730These local types include RegionFields, BankFields, IndexFields, Alias, and 4731reference objects. 4732 4733Moved common AML resource handling code into a new file, "utresrc.c". This 4734code is shared by both the Resource Manager and the AML Debugger. 4735 4736Code and Data Size: The current and previous library sizes for the core 4737subsystem are shown below. These are the code and data sizes for the 4738acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4739values do not include any ACPI driver or OSPM code. The debug version of the 4740code includes the debug output trace mechanism and has a much larger code 4741and data size. Note that these values will vary depending on the efficiency 4742of the compiler and the compiler options used during generation. 4743 4744 Previous Release: 4745 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 4746 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 4747 Current Release: 4748 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 4749 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 4750 4751 47522) iASL Compiler/Disassembler: 4753 4754Fixed a problem with very large initializer lists (more than 4000 elements) 4755for both Buffer and Package objects where the parse stack could overflow. 4756 4757Enhanced the pre-compile source code scan for non-ASCII characters to ignore 4758characters within comment fields. The scan is now always performed and is no 4759longer optional, detecting invalid characters within a source file 4760immediately rather than during the parse phase or later. 4761 4762Enhanced the ASL grammar definition to force early reductions on all list- 4763style grammar elements so that the overall parse stack usage is greatly 4764reduced. This should improve performance and reduce the possibility of parse 4765stack overflow. 4766 4767Eliminated all reduce/reduce conflicts in the iASL parser generation. Also, 4768with the addition of a %expected statement, the compiler generates from 4769source with no warnings. 4770 4771Fixed a possible segment fault in the disassembler if the input filename 4772does not contain a "dot" extension (Thomas Renninger). 4773 4774---------------------------------------- 477521 October 2005. Summary of changes for version 20051021: 4776 47771) ACPI CA Core Subsystem: 4778 4779Implemented support for the EM64T and other x86-64 processors. This 4780essentially entails recognizing that these processors support non-aligned 4781memory transfers. Previously, all 64-bit processors were assumed to lack 4782hardware support for non-aligned transfers. 4783 4784Completed conversion of the Resource Manager to nearly full table-driven 4785operation. Specifically, the resource conversion code (convert AML to 4786internal format and the reverse) and the debug code to dump internal 4787resource descriptors are fully table-driven, reducing code and data size and 4788improving maintainability. 4789 4790The OSL interfaces for Acquire and Release Lock now use a 64-bit flag word 4791on 64-bit processors instead of a fixed 32-bit word. (With assistance from 4792Alexey Starikovskiy) 4793 4794Implemented support within the resource conversion code for the Type- 4795Specific byte within the various ACPI 3.0 *WordSpace macros. 4796 4797Fixed some issues within the resource conversion code for the type-specific 4798flags for both Memory and I/O address resource descriptors. For Memory, 4799implemented support for the MTP and TTP flags. For I/O, split the TRS and 4800TTP flags into two separate fields. 4801 4802Code and Data Size: The current and previous library sizes for the core 4803subsystem are shown below. These are the code and data sizes for the 4804acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4805values do not include any ACPI driver or OSPM code. The debug version of the 4806code includes the debug output trace mechanism and has a much larger code 4807and data size. Note that these values will vary depending on the efficiency 4808of the compiler and the compiler options used during generation. 4809 4810 Previous Release: 4811 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 4812 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 4813 Current Release: 4814 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 4815 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 4816 4817 4818 48192) iASL Compiler/Disassembler: 4820 4821Relaxed a compiler restriction that disallowed a ResourceIndex byte if the 4822corresponding ResourceSource string was not also present in a resource 4823descriptor declaration. This restriction caused problems with existing 4824AML/ASL code that includes the Index byte without the string. When such AML 4825was disassembled, it could not be compiled without modification. Further, 4826the modified code created a resource template with a different size than the 4827original, breaking code that used fixed offsets into the resource template 4828buffer. 4829 4830Removed a recent feature of the disassembler to ignore a lone ResourceIndex 4831byte. This byte is now emitted if present so that the exact AML can be 4832reproduced when the disassembled code is recompiled. 4833 4834Improved comments and text alignment for the resource descriptor code 4835emitted by the disassembler. 4836 4837Implemented disassembler support for the ACPI 3.0 AccessSize field within a 4838Register() resource descriptor. 4839 4840---------------------------------------- 484130 September 2005. Summary of changes for version 20050930: 4842 48431) ACPI CA Core Subsystem: 4844 4845Completed a major overhaul of the Resource Manager code - specifically, 4846optimizations in the area of the AML/internal resource conversion code. The 4847code has been optimized to simplify and eliminate duplicated code, CPU stack 4848use has been decreased by optimizing function parameters and local 4849variables, and naming conventions across the manager have been standardized 4850for clarity and ease of maintenance (this includes function, parameter, 4851variable, and struct/typedef names.) The update may force changes in some 4852driver code, depending on how resources are handled by the host OS. 4853 4854All Resource Manager dispatch and information tables have been moved to a 4855single location for clarity and ease of maintenance. One new file was 4856created, named "rsinfo.c". 4857 4858The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to 4859guarantee that the argument is not evaluated twice, making them less prone 4860to macro side-effects. However, since there exists the possibility of 4861additional stack use if a particular compiler cannot optimize them (such as 4862in the debug generation case), the original macros are optionally available. 4863Note that some invocations of the return_VALUE macro may now cause size 4864mismatch warnings; the return_UINT8 and return_UINT32 macros are provided to 4865eliminate these. (From Randy Dunlap) 4866 4867Implemented a new mechanism to enable debug tracing for individual control 4868methods. A new external interface, AcpiDebugTrace, is provided to enable 4869this mechanism. The intent is to allow the host OS to easily enable and 4870disable tracing for problematic control methods. This interface can be 4871easily exposed to a user or debugger interface if desired. See the file 4872psxface.c for details. 4873 4874AcpiUtCallocate will now return a valid pointer if a length of zero is 4875specified - a length of one is used and a warning is issued. This matches 4876the behavior of AcpiUtAllocate. 4877 4878Code and Data Size: The current and previous library sizes for the core 4879subsystem are shown below. These are the code and data sizes for the 4880acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4881values do not include any ACPI driver or OSPM code. The debug version of the 4882code includes the debug output trace mechanism and has a much larger code 4883and data size. Note that these values will vary depending on the efficiency 4884of the compiler and the compiler options used during generation. 4885 4886 Previous Release: 4887 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 4888 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 4889 Current Release: 4890 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 4891 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 4892 4893 48942) iASL Compiler/Disassembler: 4895 4896A remark is issued if the effective compile-time length of a package or 4897buffer is zero. Previously, this was a warning. 4898 4899---------------------------------------- 490016 September 2005. Summary of changes for version 20050916: 4901 49021) ACPI CA Core Subsystem: 4903 4904Fixed a problem within the Resource Manager where support for the Generic 4905Register descriptor was not fully implemented. This descriptor is now fully 4906recognized, parsed, disassembled, and displayed. 4907 4908Completely restructured the Resource Manager code to utilize table-driven 4909dispatch and lookup, eliminating many of the large switch() statements. This 4910reduces overall subsystem code size and code complexity. Affects the 4911resource parsing and construction, disassembly, and debug dump output. 4912 4913Cleaned up and restructured the debug dump output for all resource 4914descriptors. Improved readability of the output and reduced code size. 4915 4916Fixed a problem where changes to internal data structures caused the 4917optional ACPI_MUTEX_DEBUG code to fail compilation if specified. 4918 4919Code and Data Size: The current and previous library sizes for the core 4920subsystem are shown below. These are the code and data sizes for the 4921acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4922values do not include any ACPI driver or OSPM code. The debug version of the 4923code includes the debug output trace mechanism and has a much larger code 4924and data size. Note that these values will vary depending on the efficiency 4925of the compiler and the compiler options used during generation. 4926 4927 Previous Release: 4928 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 4929 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 4930 Current Release: 4931 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 4932 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 4933 4934 49352) iASL Compiler/Disassembler: 4936 4937Updated the disassembler to automatically insert an EndDependentFn() macro 4938into the ASL stream if this macro is missing in the original AML code, 4939simplifying compilation of the resulting ASL module. 4940 4941Fixed a problem in the disassembler where a disassembled ResourceSource 4942string (within a large resource descriptor) was not surrounded by quotes and 4943not followed by a comma, causing errors when the resulting ASL module was 4944compiled. Also, escape sequences within a ResourceSource string are now 4945handled correctly (especially "\\") 4946 4947---------------------------------------- 494802 September 2005. Summary of changes for version 20050902: 4949 49501) ACPI CA Core Subsystem: 4951 4952Fixed a problem with the internal Owner ID allocation and deallocation 4953mechanisms for control method execution and recursive method invocation. 4954This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId" 4955messages seen on some systems. Recursive method invocation depth is 4956currently limited to 255. (Alexey Starikovskiy) 4957 4958Completely eliminated all vestiges of support for the "module-level 4959executable code" until this support is fully implemented and debugged. This 4960should eliminate the NO_RETURN_VALUE exceptions seen during table load on 4961some systems that invoke this support. 4962 4963Fixed a problem within the resource manager code where the transaction flags 4964for a 64-bit address descriptor were handled incorrectly in the type- 4965specific flag byte. 4966 4967Consolidated duplicate code within the address descriptor resource manager 4968code, reducing overall subsystem code size. 4969 4970Fixed a fault when using the AML debugger "disassemble" command to 4971disassemble individual control methods. 4972 4973Removed references to the "release_current" directory within the Unix 4974release package. 4975 4976Code and Data Size: The current and previous core subsystem library sizes 4977are shown below. These are the code and data sizes for the acpica.lib 4978produced by the Microsoft Visual C++ 6.0 compiler. These values do not 4979include any ACPI driver or OSPM code. The debug version of the code includes 4980the debug output trace mechanism and has a much larger code and data size. 4981Note that these values will vary depending on the efficiency of the compiler 4982and the compiler options used during generation. 4983 4984 Previous Release: 4985 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 4986 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 4987 Current Release: 4988 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 4989 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 4990 4991 49922) iASL Compiler/Disassembler: 4993 4994Implemented an error check for illegal duplicate values in the interrupt and 4995dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and 4996Interrupt(). 4997 4998Implemented error checking for the Irq() and IrqNoFlags() macros to detect 4999too many values in the interrupt list (16 max) and invalid values in the 5000list (range 0 - 15) 5001 5002The maximum length string literal within an ASL file is now restricted to 5003200 characters as per the ACPI specification. 5004 5005Fixed a fault when using the -ln option (generate namespace listing). 5006 5007Implemented an error check to determine if a DescriptorName within a 5008resource descriptor has already been used within the current scope. 5009 5010---------------------------------------- 501115 August 2005. Summary of changes for version 20050815: 5012 50131) ACPI CA Core Subsystem: 5014 5015Implemented a full bytewise compare to determine if a table load request is 5016attempting to load a duplicate table. The compare is performed if the table 5017signatures and table lengths match. This will allow different tables with 5018the same OEM Table ID and revision to be loaded - probably against the ACPI 5019specification, but discovered in the field nonetheless. 5020 5021Added the changes.txt logfile to each of the zipped release packages. 5022 5023Code and Data Size: Current and previous core subsystem library sizes are 5024shown below. These are the code and data sizes for the acpica.lib produced 5025by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5026any ACPI driver or OSPM code. The debug version of the code includes the 5027debug output trace mechanism and has a much larger code and data size. Note 5028that these values will vary depending on the efficiency of the compiler and 5029the compiler options used during generation. 5030 5031 Previous Release: 5032 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 5033 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 5034 Current Release: 5035 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 5036 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 5037 5038 50392) iASL Compiler/Disassembler: 5040 5041Fixed a problem where incorrect AML code could be generated for Package 5042objects if optimization is disabled (via the -oa switch). 5043 5044Fixed a problem with where incorrect AML code is generated for variable- 5045length packages when the package length is not specified and the number of 5046initializer values is greater than 255. 5047 5048 5049---------------------------------------- 505029 July 2005. Summary of changes for version 20050729: 5051 50521) ACPI CA Core Subsystem: 5053 5054Implemented support to ignore an attempt to install/load a particular ACPI 5055table more than once. Apparently there exists BIOS code that repeatedly 5056attempts to load the same SSDT upon certain events. With assistance from 5057Venkatesh Pallipadi. 5058 5059Restructured the main interface to the AML parser in order to correctly 5060handle all exceptional conditions. This will prevent leakage of the OwnerId 5061resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on some 5062machines. With assistance from Alexey Starikovskiy. 5063 5064Support for "module level code" has been disabled in this version due to a 5065number of issues that have appeared on various machines. The support can be 5066enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem 5067compilation. When the issues are fully resolved, the code will be enabled by 5068default again. 5069 5070Modified the internal functions for debug print support to define the 5071FunctionName parameter as a (const char *) for compatibility with compiler 5072built-in macros such as __FUNCTION__, etc. 5073 5074Linted the entire ACPICA source tree for both 32-bit and 64-bit. 5075 5076Implemented support to display an object count summary for the AML Debugger 5077commands Object and Methods. 5078 5079Code and Data Size: Current and previous core subsystem library sizes are 5080shown below. These are the code and data sizes for the acpica.lib produced 5081by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5082any ACPI driver or OSPM code. The debug version of the code includes the 5083debug output trace mechanism and has a much larger code and data size. Note 5084that these values will vary depending on the efficiency of the compiler and 5085the compiler options used during generation. 5086 5087 Previous Release: 5088 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 5089 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 5090 Current Release: 5091 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 5092 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 5093 5094 50952) iASL Compiler/Disassembler: 5096 5097Fixed a regression that appeared in the 20050708 version of the compiler 5098where an error message was inadvertently emitted for invocations of the _OSI 5099reserved control method. 5100 5101---------------------------------------- 510208 July 2005. Summary of changes for version 20050708: 5103 51041) ACPI CA Core Subsystem: 5105 5106The use of the CPU stack in the debug version of the subsystem has been 5107considerably reduced. Previously, a debug structure was declared in every 5108function that used the debug macros. This structure has been removed in 5109favor of declaring the individual elements as parameters to the debug 5110functions. This reduces the cumulative stack use during nested execution of 5111ACPI function calls at the cost of a small increase in the code size of the 5112debug version of the subsystem. With assistance from Alexey Starikovskiy and 5113Len Brown. 5114 5115Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent 5116headers to define a macro that will return the current function name at 5117runtime (such as __FUNCTION__ or _func_, etc.) The function name is used by 5118the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the 5119compiler-dependent header, the function name is saved on the CPU stack (one 5120pointer per function.) This mechanism is used because apparently there 5121exists no standard ANSI-C defined macro that that returns the function name. 5122 5123Redesigned and reimplemented the "Owner ID" mechanism used to track 5124namespace objects created/deleted by ACPI tables and control method 5125execution. A bitmap is now used to allocate and free the IDs, thus solving 5126the wraparound problem present in the previous implementation. The size of 5127the namespace node descriptor was reduced by 2 bytes as a result (Alexey 5128Starikovskiy). 5129 5130Removed the UINT32_BIT and UINT16_BIT types that were used for the bitfield 5131flag definitions within the headers for the predefined ACPI tables. These 5132have been replaced by UINT8_BIT in order to increase the code portability of 5133the subsystem. If the use of UINT8 remains a problem, we may be forced to 5134eliminate bitfields entirely because of a lack of portability. 5135 5136Enhanced the performance of the AcpiUtUpdateObjectReference procedure. This 5137is a frequently used function and this improvement increases the performance 5138of the entire subsystem (Alexey Starikovskiy). 5139 5140Fixed several possible memory leaks and the inverse - premature object 5141deletion (Alexey Starikovskiy). 5142 5143Code and Data Size: Current and previous core subsystem library sizes are 5144shown below. These are the code and data sizes for the acpica.lib produced 5145by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5146any ACPI driver or OSPM code. The debug version of the code includes the 5147debug output trace mechanism and has a much larger code and data size. Note 5148that these values will vary depending on the efficiency of the compiler and 5149the compiler options used during generation. 5150 5151 Previous Release: 5152 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 5153 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 5154 Current Release: 5155 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 5156 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 5157 5158---------------------------------------- 515924 June 2005. Summary of changes for version 20050624: 5160 51611) ACPI CA Core Subsystem: 5162 5163Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for 5164the host-defined cache object. This allows the OSL implementation to define 5165and type this object in any manner desired, simplifying the OSL 5166implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for 5167Linux, and should be defined in the OS-specific header file for other 5168operating systems as required. 5169 5170Changed the interface to AcpiOsAcquireObject to directly return the 5171requested object as the function return (instead of ACPI_STATUS.) This 5172change was made for performance reasons, since this is the purpose of the 5173interface in the first place. AcpiOsAcquireObject is now similar to the 5174AcpiOsAllocate interface. 5175 5176Implemented a new AML debugger command named Businfo. This command displays 5177information about all devices that have an associate _PRT object. The _ADR, 5178_HID, _UID, and _CID are displayed for these devices. 5179 5180Modified the initialization sequence in AcpiInitializeSubsystem to call the 5181OSL interface AcpiOslInitialize first, before any local initialization. This 5182change was required because the global initialization now calls OSL 5183interfaces. 5184 5185Enhanced the Dump command to display the entire contents of Package objects 5186(including all sub-objects and their values.) 5187 5188Restructured the code base to split some files because of size and/or 5189because the code logically belonged in a separate file. New files are listed 5190below. All makefiles and project files included in the ACPI CA release have 5191been updated. 5192 utilities/utcache.c /* Local cache interfaces */ 5193 utilities/utmutex.c /* Local mutex support */ 5194 utilities/utstate.c /* State object support */ 5195 interpreter/parser/psloop.c /* Main AML parse loop */ 5196 5197Code and Data Size: Current and previous core subsystem library sizes are 5198shown below. These are the code and data sizes for the acpica.lib produced 5199by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5200any ACPI driver or OSPM code. The debug version of the code includes the 5201debug output trace mechanism and has a much larger code and data size. Note 5202that these values will vary depending on the efficiency of the compiler and 5203the compiler options used during generation. 5204 5205 Previous Release: 5206 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 5207 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 5208 Current Release: 5209 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 5210 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 5211 5212 52132) iASL Compiler/Disassembler: 5214 5215Fixed a regression introduced in version 20050513 where the use of a Package 5216object within a Case() statement caused a compile time exception. The 5217original behavior has been restored (a Match() operator is emitted.) 5218 5219---------------------------------------- 522017 June 2005. Summary of changes for version 20050617: 5221 52221) ACPI CA Core Subsystem: 5223 5224Moved the object cache operations into the OS interface layer (OSL) to allow 5225the host OS to handle these operations if desired (for example, the Linux 5226OSL will invoke the slab allocator). This support is optional; the compile 5227time define ACPI_USE_LOCAL_CACHE may be used to utilize the original cache 5228code in the ACPI CA core. The new OSL interfaces are shown below. See 5229utalloc.c for an example implementation, and acpiosxf.h for the exact 5230interface definitions. With assistance from Alexey Starikovskiy. 5231 AcpiOsCreateCache 5232 AcpiOsDeleteCache 5233 AcpiOsPurgeCache 5234 AcpiOsAcquireObject 5235 AcpiOsReleaseObject 5236 5237Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to return 5238and restore a flags parameter. This fits better with many OS lock models. 5239Note: the current execution state (interrupt handler or not) is no longer 5240passed to these interfaces. If necessary, the OSL must determine this state 5241by itself, a simple and fast operation. With assistance from Alexey 5242Starikovskiy. 5243 5244Fixed a problem in the ACPI table handling where a valid XSDT was assumed 5245present if the revision of the RSDP was 2 or greater. According to the ACPI 5246specification, the XSDT is optional in all cases, and the table manager 5247therefore now checks for both an RSDP >=2 and a valid XSDT pointer. 5248Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs contain 5249only the RSDT. 5250 5251Fixed an interpreter problem with the Mid() operator in the case of an input 5252string where the resulting output string is of zero length. It now correctly 5253returns a valid, null terminated string object instead of a string object 5254with a null pointer. 5255 5256Fixed a problem with the control method argument handling to allow a store 5257to an Arg object that already contains an object of type Device. The Device 5258object is now correctly overwritten. Previously, an error was returned. 5259 5260 5261Enhanced the debugger Find command to emit object values in addition to the 5262found object pathnames. The output format is the same as the dump namespace 5263command. 5264 5265Enhanced the debugger Set command. It now has the ability to set the value 5266of any Named integer object in the namespace (Previously, only method locals 5267and args could be set.) 5268 5269Code and Data Size: Current and previous core subsystem library sizes are 5270shown below. These are the code and data sizes for the acpica.lib produced 5271by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5272any ACPI driver or OSPM code. The debug version of the code includes the 5273debug output trace mechanism and has a much larger code and data size. Note 5274that these values will vary depending on the efficiency of the compiler and 5275the compiler options used during generation. 5276 5277 Previous Release: 5278 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 5279 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 5280 Current Release: 5281 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 5282 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 5283 5284 52852) iASL Compiler/Disassembler: 5286 5287Fixed a regression in the disassembler where if/else/while constructs were 5288output incorrectly. This problem was introduced in the previous release 5289(20050526). This problem also affected the single-step disassembly in the 5290debugger. 5291 5292Fixed a problem where compiling the reserved _OSI method would randomly (but 5293rarely) produce compile errors. 5294 5295Enhanced the disassembler to emit compilable code in the face of incorrect 5296AML resource descriptors. If the optional ResourceSourceIndex is present, 5297but the ResourceSource is not, do not emit the ResourceSourceIndex in the 5298disassembly. Otherwise, the resulting code cannot be compiled without 5299errors. 5300 5301---------------------------------------- 530226 May 2005. Summary of changes for version 20050526: 5303 53041) ACPI CA Core Subsystem: 5305 5306Implemented support to execute Type 1 and Type 2 AML opcodes appearing at 5307the module level (not within a control method.) These opcodes are executed 5308exactly once at the time the table is loaded. This type of code was legal up 5309until the release of ACPI 2.0B (2002) and is now supported within ACPI CA in 5310order to provide backwards compatibility with earlier BIOS implementations. 5311This eliminates the "Encountered executable code at module level" warning 5312that was previously generated upon detection of such code. 5313 5314Fixed a problem in the interpreter where an AE_NOT_FOUND exception could 5315inadvertently be generated during the lookup of namespace objects in the 5316second pass parse of ACPI tables and control methods. It appears that this 5317problem could occur during the resolution of forward references to namespace 5318objects. 5319 5320Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function, 5321corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This 5322allows the deadlock detection debug code to be compiled out in the normal 5323case, improving mutex performance (and overall subsystem performance) 5324considerably. 5325 5326Implemented a handful of miscellaneous fixes for possible memory leaks on 5327error conditions and error handling control paths. These fixes were 5328suggested by FreeBSD and the Coverity Prevent source code analysis tool. 5329 5330Added a check for a null RSDT pointer in AcpiGetFirmwareTable (tbxfroot.c) 5331to prevent a fault in this error case. 5332 5333Code and Data Size: Current and previous core subsystem library sizes are 5334shown below. These are the code and data sizes for the acpica.lib produced 5335by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5336any ACPI driver or OSPM code. The debug version of the code includes the 5337debug output trace mechanism and has a much larger code and data size. Note 5338that these values will vary depending on the efficiency of the compiler and 5339the compiler options used during generation. 5340 5341 Previous Release: 5342 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 5343 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 5344 Current Release: 5345 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 5346 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 5347 5348 53492) iASL Compiler/Disassembler: 5350 5351Implemented support to allow Type 1 and Type 2 ASL operators to appear at 5352the module level (not within a control method.) These operators will be 5353executed once at the time the table is loaded. This type of code was legal 5354up until the release of ACPI 2.0B (2002) and is now supported by the iASL 5355compiler in order to provide backwards compatibility with earlier BIOS ASL 5356code. 5357 5358The ACPI integer width (specified via the table revision ID or the -r 5359override, 32 or 64 bits) is now used internally during compile-time constant 5360folding to ensure that constants are truncated to 32 bits if necessary. 5361Previously, the revision ID value was only emitted in the AML table header. 5362 5363An error message is now generated for the Mutex and Method operators if the 5364SyncLevel parameter is outside the legal range of 0 through 15. 5365 5366Fixed a problem with the Method operator ParameterTypes list handling (ACPI 53673.0). Previously, more than 2 types or 2 arguments generated a syntax error. 5368The actual underlying implementation of method argument typechecking is 5369still under development, however. 5370 5371---------------------------------------- 537213 May 2005. Summary of changes for version 20050513: 5373 53741) ACPI CA Core Subsystem: 5375 5376Implemented support for PCI Express root bridges -- added support for device 5377PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup. 5378 5379The interpreter now automatically truncates incoming 64-bit constants to 32 5380bits if currently executing out of a 32-bit ACPI table (Revision < 2). This 5381also affects the iASL compiler constant folding. (Note: as per below, the 5382iASL compiler no longer allows 64-bit constants within 32-bit tables.) 5383 5384Fixed a problem where string and buffer objects with "static" pointers 5385(pointers to initialization data within an ACPI table) were not handled 5386consistently. The internal object copy operation now always copies the data 5387to a newly allocated buffer, regardless of whether the source object is 5388static or not. 5389 5390Fixed a problem with the FromBCD operator where an implicit result 5391conversion was improperly performed while storing the result to the target 5392operand. Since this is an "explicit conversion" operator, the implicit 5393conversion should never be performed on the output. 5394 5395Fixed a problem with the CopyObject operator where a copy to an existing 5396named object did not always completely overwrite the existing object stored 5397at name. Specifically, a buffer-to-buffer copy did not delete the existing 5398buffer. 5399 5400Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces and 5401structs for consistency. 5402 5403Code and Data Size: Current and previous core subsystem library sizes are 5404shown below. These are the code and data sizes for the acpica.lib produced 5405by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5406any ACPI driver or OSPM code. The debug version of the code includes the 5407debug output trace mechanism and has a much larger code and data size. Note 5408that these values will vary depending on the efficiency of the compiler and 5409the compiler options used during generation. 5410 5411 Previous Release: 5412 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 5413 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 5414 Current Release: (Same sizes) 5415 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 5416 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 5417 5418 54192) iASL Compiler/Disassembler: 5420 5421The compiler now emits a warning if an attempt is made to generate a 64-bit 5422integer constant from within a 32-bit ACPI table (Revision < 2). The integer 5423is truncated to 32 bits. 5424 5425Fixed a problem with large package objects: if the static length of the 5426package is greater than 255, the "variable length package" opcode is 5427emitted. Previously, this caused an error. This requires an update to the 5428ACPI spec, since it currently (incorrectly) states that packages larger than 5429255 elements are not allowed. 5430 5431The disassembler now correctly handles variable length packages and packages 5432larger than 255 elements. 5433 5434---------------------------------------- 543508 April 2005. Summary of changes for version 20050408: 5436 54371) ACPI CA Core Subsystem: 5438 5439Fixed three cases in the interpreter where an "index" argument to an ASL 5440function was still (internally) 32 bits instead of the required 64 bits. 5441This was the Index argument to the Index, Mid, and Match operators. 5442 5443The "strupr" function is now permanently local (AcpiUtStrupr), since this is 5444not a POSIX-defined function and not present in most kernel-level C 5445libraries. All references to the C library strupr function have been removed 5446from the headers. 5447 5448Completed the deployment of static functions/prototypes. All prototypes with 5449the static attribute have been moved from the headers to the owning C file. 5450 5451Implemented an extract option (-e) for the AcpiBin utility (AML binary 5452utility). This option allows the utility to extract individual ACPI tables 5453from the output of AcpiDmp. It provides the same functionality of the 5454acpixtract.pl perl script without the worry of setting the correct perl 5455options. AcpiBin runs on Windows and has not yet been generated/validated in 5456the Linux/Unix environment (but should be soon). 5457 5458Updated and fixed the table dump option for AcpiBin (-d). This option 5459converts a single ACPI table to a hex/ascii file, similar to the output of 5460AcpiDmp. 5461 5462Code and Data Size: Current and previous core subsystem library sizes are 5463shown below. These are the code and data sizes for the acpica.lib produced 5464by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5465any ACPI driver or OSPM code. The debug version of the code includes the 5466debug output trace mechanism and has a much larger code and data size. Note 5467that these values will vary depending on the efficiency of the compiler and 5468the compiler options used during generation. 5469 5470 Previous Release: 5471 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 5472 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 5473 Current Release: 5474 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 5475 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 5476 5477 54782) iASL Compiler/Disassembler: 5479 5480Disassembler fix: Added a check to ensure that the table length found in the 5481ACPI table header within the input file is not longer than the actual input 5482file size. This indicates some kind of file or table corruption. 5483 5484---------------------------------------- 548529 March 2005. Summary of changes for version 20050329: 5486 54871) ACPI CA Core Subsystem: 5488 5489An error is now generated if an attempt is made to create a Buffer Field of 5490length zero (A CreateField with a length operand of zero.) 5491 5492The interpreter now issues a warning whenever executable code at the module 5493level is detected during ACPI table load. This will give some idea of the 5494prevalence of this type of code. 5495 5496Implemented support for references to named objects (other than control 5497methods) within package objects. 5498 5499Enhanced package object output for the debug object. Package objects are now 5500completely dumped, showing all elements. 5501 5502Enhanced miscellaneous object output for the debug object. Any object can 5503now be written to the debug object (for example, a device object can be 5504written, and the type of the object will be displayed.) 5505 5506The "static" qualifier has been added to all local functions across both the 5507core subsystem and the iASL compiler. 5508 5509The number of "long" lines (> 80 chars) within the source has been 5510significantly reduced, by about 1/3. 5511 5512Cleaned up all header files to ensure that all CA/iASL functions are 5513prototyped (even static functions) and the formatting is consistent. 5514 5515Two new header files have been added, acopcode.h and acnames.h. 5516 5517Removed several obsolete functions that were no longer used. 5518 5519Code and Data Size: Current and previous core subsystem library sizes are 5520shown below. These are the code and data sizes for the acpica.lib produced 5521by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5522any ACPI driver or OSPM code. The debug version of the code includes the 5523debug output trace mechanism and has a much larger code and data size. Note 5524that these values will vary depending on the efficiency of the compiler and 5525the compiler options used during generation. 5526 5527 Previous Release: 5528 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 5529 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 5530 Current Release: 5531 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 5532 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 5533 5534 5535 55362) iASL Compiler/Disassembler: 5537 5538Fixed a problem with the resource descriptor generation/support. For the 5539ResourceSourceIndex and the ResourceSource fields, both must be present, or 5540both must be not present - can't have one without the other. 5541 5542The compiler now returns non-zero from the main procedure if any errors have 5543occurred during the compilation. 5544 5545 5546---------------------------------------- 554709 March 2005. Summary of changes for version 20050309: 5548 55491) ACPI CA Core Subsystem: 5550 5551The string-to-buffer implicit conversion code has been modified again after 5552a change to the ACPI specification. In order to match the behavior of the 5553other major ACPI implementation, the target buffer is no longer truncated if 5554the source string is smaller than an existing target buffer. This change 5555requires an update to the ACPI spec, and should eliminate the recent 5556AE_AML_BUFFER_LIMIT issues. 5557 5558The "implicit return" support was rewritten to a new algorithm that solves 5559the general case. Rather than attempt to determine when a method is about to 5560exit, the result of every ASL operator is saved momentarily until the very 5561next ASL operator is executed. Therefore, no matter how the method exits, 5562there will always be a saved implicit return value. This feature is only 5563enabled with the AcpiGbl_EnableInterpreterSlack flag, and should eliminate 5564AE_AML_NO_RETURN_VALUE errors when enabled. 5565 5566Implemented implicit conversion support for the predicate (operand) of the 5567If, Else, and While operators. String and Buffer arguments are automatically 5568converted to Integers. 5569 5570Changed the string-to-integer conversion behavior to match the new ACPI 5571errata: "If no integer object exists, a new integer is created. The ASCII 5572string is interpreted as a hexadecimal constant. Each string character is 5573interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting 5574with the first character as the most significant digit, and ending with the 5575first non-hexadecimal character or end-of-string." This means that the first 5576non-hex character terminates the conversion and this is the code that was 5577changed. 5578 5579Fixed a problem where the ObjectType operator would fail (fault) when used 5580on an Index of a Package which pointed to a null package element. The 5581operator now properly returns zero (Uninitialized) in this case. 5582 5583Fixed a problem where the While operator used excessive memory by not 5584properly popping the result stack during execution. There was no memory leak 5585after execution, however. (Code provided by Valery Podrezov.) 5586 5587Fixed a problem where references to control methods within Package objects 5588caused the method to be invoked, instead of producing a reference object 5589pointing to the method. 5590 5591Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree) to 5592improve performance and reduce code size. (Code provided by Alexey 5593Starikovskiy.) 5594 5595Code and Data Size: Current and previous core subsystem library sizes are 5596shown below. These are the code and data sizes for the acpica.lib produced 5597by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5598any ACPI driver or OSPM code. The debug version of the code includes the 5599debug output trace mechanism and has a much larger code and data size. Note 5600that these values will vary depending on the efficiency of the compiler and 5601the compiler options used during generation. 5602 5603 Previous Release: 5604 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 5605 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 5606 Current Release: 5607 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 5608 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 5609 5610 56112) iASL Compiler/Disassembler: 5612 5613Fixed a problem with the Return operator with no arguments. Since the AML 5614grammar for the byte encoding requires an operand for the Return opcode, the 5615compiler now emits a Return(Zero) for this case. An ACPI specification 5616update has been written for this case. 5617 5618For tables other than the DSDT, namepath optimization is automatically 5619disabled. This is because SSDTs can be loaded anywhere in the namespace, the 5620compiler has no knowledge of where, and thus cannot optimize namepaths. 5621 5622Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was 5623inadvertently omitted from the ACPI specification, and will require an 5624update to the spec. 5625 5626The source file scan for ASCII characters is now optional (-a). This change 5627was made because some vendors place non-ascii characters within comments. 5628However, the scan is simply a brute-force byte compare to ensure all 5629characters in the file are in the range 0x00 to 0x7F. 5630 5631Fixed a problem with the CondRefOf operator where the compiler was 5632inappropriately checking for the existence of the target. Since the point of 5633the operator is to check for the existence of the target at run-time, the 5634compiler no longer checks for the target existence. 5635 5636Fixed a problem where errors generated from the internal AML interpreter 5637during constant folding were not handled properly, causing a fault. 5638 5639Fixed a problem with overly aggressive range checking for the Stall 5640operator. The valid range (max 255) is now only checked if the operand is of 5641type Integer. All other operand types cannot be statically checked. 5642 5643Fixed a problem where control method references within the RefOf, DeRefOf, 5644and ObjectType operators were not treated properly. They are now treated as 5645actual references, not method invocations. 5646 5647Fixed and enhanced the "list namespace" option (-ln). This option was broken 5648a number of releases ago. 5649 5650Improved error handling for the Field, IndexField, and BankField operators. 5651The compiler now cleanly reports and recovers from errors in the field 5652component (FieldUnit) list. 5653 5654Fixed a disassembler problem where the optional ResourceDescriptor fields 5655TRS and TTP were not always handled correctly. 5656 5657Disassembler - Comments in output now use "//" instead of "/*" 5658 5659---------------------------------------- 566028 February 2005. Summary of changes for version 20050228: 5661 56621) ACPI CA Core Subsystem: 5663 5664Fixed a problem where the result of an Index() operator (an object 5665reference) must increment the reference count on the target object for the 5666life of the object reference. 5667 5668Implemented AML Interpreter and Debugger support for the new ACPI 3.0 5669Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and WordSpace 5670resource descriptors. 5671 5672Implemented support in the _OSI method for the ACPI 3.0 "Extended Address 5673Space Descriptor" string, indicating interpreter support for the descriptors 5674above. 5675 5676Implemented header support for the new ACPI 3.0 FADT flag bits. 5677 5678Implemented header support for the new ACPI 3.0 PCI Express bits for the PM1 5679status/enable registers. 5680 5681Updated header support for the MADT processor local Apic struct and MADT 5682platform interrupt source struct for new ACPI 3.0 fields. 5683 5684Implemented header support for the SRAT and SLIT ACPI tables. 5685 5686Implemented the -s switch in AcpiExec to enable the "InterpreterSlack" flag 5687at runtime. 5688 5689Code and Data Size: Current and previous core subsystem library sizes are 5690shown below. These are the code and data sizes for the acpica.lib produced 5691by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5692any ACPI driver or OSPM code. The debug version of the code includes the 5693debug output trace mechanism and has a much larger code and data size. Note 5694that these values will vary depending on the efficiency of the compiler and 5695the compiler options used during generation. 5696 5697 Previous Release: 5698 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 5699 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 5700 Current Release: 5701 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 5702 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 5703 5704 57052) iASL Compiler/Disassembler: 5706 5707Fixed a problem with the internal 64-bit String-to-integer conversion with 5708strings less than two characters long. 5709 5710Fixed a problem with constant folding where the result of the Index() 5711operator can not be considered a constant. This means that Index() cannot be 5712a type3 opcode and this will require an update to the ACPI specification. 5713 5714Disassembler: Implemented support for the TTP, MTP, and TRS resource 5715descriptor fields. These fields were inadvertently ignored and not output in 5716the disassembly of the resource descriptor. 5717 5718 5719 ---------------------------------------- 572011 February 2005. Summary of changes for version 20050211: 5721 57221) ACPI CA Core Subsystem: 5723 5724Implemented ACPI 3.0 support for implicit conversion within the Match() 5725operator. MatchObjects can now be of type integer, buffer, or string instead 5726of just type integer. Package elements are implicitly converted to the type 5727of the MatchObject. This change aligns the behavior of Match() with the 5728behavior of the other logical operators (LLess(), etc.) It also requires an 5729errata change to the ACPI specification as this support was intended for 5730ACPI 3.0, but was inadvertently omitted. 5731 5732Fixed a problem with the internal implicit "to buffer" conversion. Strings 5733that are converted to buffers will cause buffer truncation if the string is 5734smaller than the target buffer. Integers that are converted to buffers will 5735not cause buffer truncation, only zero extension (both as per the ACPI 5736spec.) The problem was introduced when code was added to truncate the 5737buffer, but this should not be performed in all cases, only the string case. 5738 5739Fixed a problem with the Buffer and Package operators where the interpreter 5740would get confused if two such operators were used as operands to an ASL 5741operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result 5742stack was not being popped after the execution of these operators, resulting 5743in an AE_NO_RETURN_VALUE exception. 5744 5745Fixed a problem with constructs of the form Store(Index(...),...). The 5746reference object returned from Index was inadvertently resolved to an actual 5747value. This problem was introduced in version 20050114 when the behavior of 5748Store() was modified to restrict the object types that can be used as the 5749source operand (to match the ACPI specification.) 5750 5751Reduced excessive stack use within the AcpiGetObjectInfo procedure. 5752 5753Added a fix to aclinux.h to allow generation of AcpiExec on Linux. 5754 5755Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct. 5756 5757Code and Data Size: Current and previous core subsystem library sizes are 5758shown below. These are the code and data sizes for the acpica.lib produced 5759by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5760any ACPI driver or OSPM code. The debug version of the code includes the 5761debug output trace mechanism and has a much larger code and data size. Note 5762that these values will vary depending on the efficiency of the compiler and 5763the compiler options used during generation. 5764 5765 Previous Release: 5766 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 5767 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 5768 Current Release: 5769 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 5770 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 5771 5772 57732) iASL Compiler/Disassembler: 5774 5775Fixed a code generation problem in the constant folding optimization code 5776where incorrect code was generated if a constant was reduced to a buffer 5777object (i.e., a reduced type 5 opcode.) 5778 5779Fixed a typechecking problem for the ToBuffer operator. Caused by an 5780incorrect return type in the internal opcode information table. 5781 5782---------------------------------------- 578325 January 2005. Summary of changes for version 20050125: 5784 57851) ACPI CA Core Subsystem: 5786 5787Fixed a recently introduced problem with the Global Lock where the 5788underlying semaphore was not created. This problem was introduced in 5789version 20050114, and caused an AE_AML_NO_OPERAND exception during an 5790Acquire() operation on _GL. 5791 5792The local object cache is now optional, and is disabled by default. Both 5793AcpiExec and the iASL compiler enable the cache because they run in user 5794mode and this enhances their performance. #define ACPI_ENABLE_OBJECT_CACHE 5795to enable the local cache. 5796 5797Fixed an issue in the internal function AcpiUtEvaluateObject concerning the 5798optional "implicit return" support where an error was returned if no return 5799object was expected, but one was implicitly returned. AE_OK is now returned 5800in this case and the implicitly returned object is deleted. 5801AcpiUtEvaluateObject is only occasionally used, and only to execute reserved 5802methods such as _STA and _INI where the return type is known up front. 5803 5804Fixed a few issues with the internal convert-to-integer code. It now returns 5805an error if an attempt is made to convert a null string, a string of only 5806blanks/tabs, or a zero-length buffer. This affects both implicit conversion 5807and explicit conversion via the ToInteger() operator. 5808 5809The internal debug code in AcpiUtAcquireMutex has been commented out. It is 5810not needed for normal operation and should increase the performance of the 5811entire subsystem. The code remains in case it is needed for debug purposes 5812again. 5813 5814The AcpiExec source and makefile are included in the Unix/Linux package for 5815the first time. 5816 5817Code and Data Size: Current and previous core subsystem library sizes are 5818shown below. These are the code and data sizes for the acpica.lib produced 5819by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5820any ACPI driver or OSPM code. The debug version of the code includes the 5821debug output trace mechanism and has a much larger code and data size. Note 5822that these values will vary depending on the efficiency of the compiler and 5823the compiler options used during generation. 5824 5825 Previous Release: 5826 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 5827 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 5828 Current Release: 5829 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 5830 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 5831 58322) iASL Compiler/Disassembler: 5833 5834Switch/Case support: A warning is now issued if the type of the Switch value 5835cannot be determined at compile time. For example, Switch(Arg0) will 5836generate the warning, and the type is assumed to be an integer. As per the 5837ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate the 5838warning. 5839 5840Switch/Case support: Implemented support for buffer and string objects as 5841the switch value. This is an ACPI 3.0 feature, now that LEqual supports 5842buffers and strings. 5843 5844Switch/Case support: The emitted code for the LEqual() comparisons now uses 5845the switch value as the first operand, not the second. The case value is now 5846the second operand, and this allows the case value to be implicitly 5847converted to the type of the switch value, not the other way around. 5848 5849Switch/Case support: Temporary variables are now emitted immediately within 5850the control method, not at the global level. This means that there are now 585136 temps available per-method, not 36 temps per-module as was the case with 5852the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.) 5853 5854---------------------------------------- 585514 January 2005. Summary of changes for version 20050114: 5856 5857Added 2005 copyright to all module headers. This affects every module in 5858the core subsystem, iASL compiler, and the utilities. 5859 58601) ACPI CA Core Subsystem: 5861 5862Fixed an issue with the String-to-Buffer conversion code where the string 5863null terminator was not included in the buffer after conversion, but there 5864is existing ASL that assumes the string null terminator is included. This is 5865the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was 5866introduced in the previous version when the code was updated to correctly 5867set the converted buffer size as per the ACPI specification. The ACPI spec 5868is ambiguous and will be updated to specify that the null terminator must be 5869included in the converted buffer. This also affects the ToBuffer() ASL 5870operator. 5871 5872Fixed a problem with the Mid() ASL/AML operator where it did not work 5873correctly on Buffer objects. Newly created sub-buffers were not being marked 5874as initialized. 5875 5876 5877Fixed a problem in AcpiTbFindTable where incorrect string compares were 5878performed on the OemId and OemTableId table header fields. These fields are 5879not null terminated, so strncmp is now used instead of strcmp. 5880 5881Implemented a restriction on the Store() ASL/AML operator to align the 5882behavior with the ACPI specification. Previously, any object could be used 5883as the source operand. Now, the only objects that may be used are Integers, 5884Buffers, Strings, Packages, Object References, and DDB Handles. If 5885necessary, the original behavior can be restored by enabling the 5886EnableInterpreterSlack flag. 5887 5888Enhanced the optional "implicit return" support to allow an implicit return 5889value from methods that are invoked externally via the AcpiEvaluateObject 5890interface. This enables implicit returns from the _STA and _INI methods, 5891for example. 5892 5893Changed the Revision() ASL/AML operator to return the current version of the 5894AML interpreter, in the YYYYMMDD format. Previously, it incorrectly returned 5895the supported ACPI version (This is the function of the _REV method). 5896 5897Updated the _REV predefined method to return the currently supported version 5898of ACPI, now 3. 5899 5900Implemented batch mode option for the AcpiExec utility (-b). 5901 5902Code and Data Size: Current and previous core subsystem library sizes are 5903shown below. These are the code and data sizes for the acpica.lib produced 5904by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5905any ACPI driver or OSPM code. The debug version of the code includes the 5906debug output trace mechanism and has a much larger code and data size. Note 5907that these values will vary depending on the efficiency of the compiler and 5908the compiler options used during generation. 5909 5910 Previous Release: 5911 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 5912 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 5913 Current Release: 5914 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 5915 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 5916 5917---------------------------------------- 591810 December 2004. Summary of changes for version 20041210: 5919 5920ACPI 3.0 support is nearing completion in both the iASL compiler and the 5921ACPI CA core subsystem. 5922 59231) ACPI CA Core Subsystem: 5924 5925Fixed a problem in the ToDecimalString operator where the resulting string 5926length was incorrectly calculated. The length is now calculated exactly, 5927eliminating incorrect AE_STRING_LIMIT exceptions. 5928 5929Fixed a problem in the ToHexString operator to allow a maximum 200 character 5930string to be produced. 5931 5932Fixed a problem in the internal string-to-buffer and buffer-to-buffer copy 5933routine where the length of the resulting buffer was not truncated to the 5934new size (if the target buffer already existed). 5935 5936Code and Data Size: Current and previous core subsystem library sizes are 5937shown below. These are the code and data sizes for the acpica.lib produced 5938by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5939any ACPI driver or OSPM code. The debug version of the code includes the 5940debug output trace mechanism and has a much larger code and data size. Note 5941that these values will vary depending on the efficiency of the compiler and 5942the compiler options used during generation. 5943 5944 Previous Release: 5945 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 5946 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 5947 Current Release: 5948 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 5949 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 5950 5951 59522) iASL Compiler/Disassembler: 5953 5954Implemented the new ACPI 3.0 resource template macros - DWordSpace, 5955ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace. 5956Includes support in the disassembler. 5957 5958Implemented support for the new (ACPI 3.0) parameter to the Register macro, 5959AccessSize. 5960 5961Fixed a problem where the _HE resource name for the Interrupt macro was 5962referencing bit 0 instead of bit 1. 5963 5964Implemented check for maximum 255 interrupts in the Interrupt macro. 5965 5966Fixed a problem with the predefined resource descriptor names where 5967incorrect AML code was generated if the offset within the resource buffer 5968was 0 or 1. The optimizer shortened the AML code to a single byte opcode 5969but did not update the surrounding package lengths. 5970 5971Changes to the Dma macro: All channels within the channel list must be in 5972the range 0-7. Maximum 8 channels can be specified. BusMaster operand is 5973optional (default is BusMaster). 5974 5975Implemented check for maximum 7 data bytes for the VendorShort macro. 5976 5977The ReadWrite parameter is now optional for the Memory32 and similar macros. 5978 5979---------------------------------------- 598003 December 2004. Summary of changes for version 20041203: 5981 59821) ACPI CA Core Subsystem: 5983 5984The low-level field insertion/extraction code (exfldio) has been completely 5985rewritten to eliminate unnecessary complexity, bugs, and boundary 5986conditions. 5987 5988Fixed a problem in the ToInteger, ToBuffer, ToHexString, and ToDecimalString 5989operators where the input operand could be inadvertently deleted if no 5990conversion was necessary (e.g., if the input to ToInteger was an Integer 5991object.) 5992 5993Fixed a problem with the ToDecimalString and ToHexString where an incorrect 5994exception code was returned if the resulting string would be > 200 chars. 5995AE_STRING_LIMIT is now returned. 5996 5997Fixed a problem with the Concatenate operator where AE_OK was always 5998returned, even if the operation failed. 5999 6000Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128 6001semaphores to be allocated. 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: 78.3K Code, 11.5K Data, 89.8K Total 6016 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 6017 6018 60192) iASL Compiler/Disassembler: 6020 6021Fixed typechecking for the ObjectType and SizeOf operators. Problem was 6022recently introduced in 20041119. 6023 6024Fixed a problem with the ToUUID macro where the upper nybble of each buffer 6025byte was inadvertently set to zero. 6026 6027---------------------------------------- 602819 November 2004. Summary of changes for version 20041119: 6029 60301) ACPI CA Core Subsystem: 6031 6032Fixed a problem in the internal ConvertToInteger routine where new integers 6033were not truncated to 32 bits for 32-bit ACPI tables. This routine converts 6034buffers and strings to integers. 6035 6036Implemented support to store a value to an Index() on a String object. This 6037is an ACPI 2.0 feature that had not yet been implemented. 6038 6039Implemented new behavior for storing objects to individual package elements 6040(via the Index() operator). The previous behavior was to invoke the implicit 6041conversion rules if an object was already present at the index. The new 6042behavior is to simply delete any existing object and directly store the new 6043object. Although the ACPI specification seems unclear on this subject, other 6044ACPI implementations behave in this manner. (This is the root of the 6045AE_BAD_HEX_CONSTANT issue.) 6046 6047Modified the RSDP memory scan mechanism to support the extended checksum for 6048ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid 6049RSDP signature is found with a valid checksum. 6050 6051Code and Data Size: Current and previous core subsystem library sizes are 6052shown below. These are the code and data sizes for the acpica.lib produced 6053by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6054any ACPI driver or OSPM code. The debug version of the code includes the 6055debug output trace mechanism and has a much larger code and data size. Note 6056that these values will vary depending on the efficiency of the compiler and 6057the compiler options used during generation. 6058 6059 Previous Release: 6060 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 6061 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 6062 Current Release: 6063 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 6064 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 6065 6066 60672) iASL Compiler/Disassembler: 6068 6069Fixed a missing semicolon in the aslcompiler.y file. 6070 6071---------------------------------------- 607205 November 2004. Summary of changes for version 20041105: 6073 60741) ACPI CA Core Subsystem: 6075 6076Implemented support for FADT revision 2. This was an interim table (between 6077ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register. 6078 6079Implemented optional support to allow uninitialized LocalX and ArgX 6080variables in a control method. The variables are initialized to an Integer 6081object with a value of zero. This support is enabled by setting the 6082AcpiGbl_EnableInterpreterSlack flag to TRUE. 6083 6084Implemented support for Integer objects for the SizeOf operator. Either 4 6085or 8 is returned, depending on the current integer size (32-bit or 64-bit, 6086depending on the parent table revision). 6087 6088Fixed a problem in the implementation of the SizeOf and ObjectType operators 6089where the operand was resolved to a value too early, causing incorrect 6090return values for some objects. 6091 6092Fixed some possible memory leaks during exceptional conditions. 6093 6094Code and Data Size: Current and previous core subsystem library sizes are 6095shown below. These are the code and data sizes for the acpica.lib produced 6096by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6097any ACPI driver or OSPM code. The debug version of the code includes the 6098debug output trace mechanism and has a much larger code and data size. Note 6099that these values will vary depending on the efficiency of the compiler and 6100the compiler options used during generation. 6101 6102 Previous Release: 6103 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 6104 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 6105 Current Release: 6106 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 6107 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 6108 6109 61102) iASL Compiler/Disassembler: 6111 6112Implemented support for all ACPI 3.0 reserved names and methods. 6113 6114Implemented all ACPI 3.0 grammar elements in the front-end, including 6115support for semicolons. 6116 6117Implemented the ACPI 3.0 Function() and ToUUID() macros 6118 6119Fixed a problem in the disassembler where a Scope() operator would not be 6120emitted properly if the target of the scope was in another table. 6121 6122---------------------------------------- 612315 October 2004. Summary of changes for version 20041015: 6124 6125Note: ACPI CA is currently undergoing an in-depth and complete formal 6126evaluation to test/verify the following areas. Other suggestions are 6127welcome. This will result in an increase in the frequency of releases and 6128the number of bug fixes in the next few months. 6129 - Functional tests for all ASL/AML operators 6130 - All implicit/explicit type conversions 6131 - Bit fields and operation regions 6132 - 64-bit math support and 32-bit-only "truncated" math support 6133 - Exceptional conditions, both compiler and interpreter 6134 - Dynamic object deletion and memory leaks 6135 - ACPI 3.0 support when implemented 6136 - External interfaces to the ACPI subsystem 6137 6138 61391) ACPI CA Core Subsystem: 6140 6141Fixed two alignment issues on 64-bit platforms - within debug statements in 6142AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the Address 6143field within the non-aligned ACPI generic address structure. 6144 6145Fixed a problem in the Increment and Decrement operators where incorrect 6146operand resolution could result in the inadvertent modification of the 6147original integer when the integer is passed into another method as an 6148argument and the arg is then incremented/decremented. 6149 6150Fixed a problem in the FromBCD operator where the upper 32-bits of a 64-bit 6151BCD number were truncated during conversion. 6152 6153Fixed a problem in the ToDecimal operator where the length of the resulting 6154string could be set incorrectly too long if the input operand was a Buffer 6155object. 6156 6157Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte (0) 6158within a buffer would prematurely terminate a compare between buffer 6159objects. 6160 6161Added a check for string overflow (>200 characters as per the ACPI 6162specification) during the Concatenate operator with two string operands. 6163 6164Code and Data Size: Current and previous core subsystem library sizes are 6165shown below. These are the code and data sizes for the acpica.lib produced 6166by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6167any ACPI driver or OSPM code. The debug version of the code includes the 6168debug output trace mechanism and has a much larger code and data size. Note 6169that these values will vary depending on the efficiency of the compiler and 6170the compiler options used during generation. 6171 6172 Previous Release: 6173 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 6174 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 6175 Current Release: 6176 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 6177 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 6178 6179 6180 61812) iASL Compiler/Disassembler: 6182 6183Allow the use of the ObjectType operator on uninitialized Locals and Args 6184(returns 0 as per the ACPI specification). 6185 6186Fixed a problem where the compiler would fault if there was a syntax error 6187in the FieldName of all of the various CreateXXXField operators. 6188 6189Disallow the use of lower case letters within the EISAID macro, as per the 6190ACPI specification. All EISAID strings must be of the form "UUUNNNN" Where 6191U is an uppercase letter and N is a hex digit. 6192 6193 6194---------------------------------------- 619506 October 2004. Summary of changes for version 20041006: 6196 61971) ACPI CA Core Subsystem: 6198 6199Implemented support for the ACPI 3.0 Timer operator. This ASL function 6200implements a 64-bit timer with 100 nanosecond granularity. 6201 6202Defined a new OSL interface, AcpiOsGetTimer. This interface is used to 6203implement the ACPI 3.0 Timer operator. This allows the host OS to implement 6204the timer with the best clock available. Also, it keeps the core subsystem 6205out of the clock handling business, since the host OS (usually) performs 6206this function. 6207 6208Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write) 6209functions use a 64-bit address which is part of the packed ACPI Generic 6210Address Structure. Since the structure is non-aligned, the alignment macros 6211are now used to extract the address to a local variable before use. 6212 6213Fixed a problem where the ToInteger operator assumed all input strings were 6214hexadecimal. The operator now handles both decimal strings and hex strings 6215(prefixed with "0x"). 6216 6217Fixed a problem where the string length in the string object created as a 6218result of the internal ConvertToString procedure could be incorrect. This 6219potentially affected all implicit conversions and also the ToDecimalString 6220and ToHexString operators. 6221 6222Fixed two problems in the ToString operator. If the length parameter was 6223zero, an incorrect string object was created and the value of the input 6224length parameter was inadvertently changed from zero to Ones. 6225 6226Fixed a problem where the optional ResourceSource string in the ExtendedIRQ 6227resource macro was ignored. 6228 6229Simplified the interfaces to the internal division functions, reducing code 6230size and complexity. 6231 6232Code and Data Size: Current and previous core subsystem library sizes are 6233shown below. These are the code and data sizes for the acpica.lib produced 6234by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6235any ACPI driver or OSPM code. The debug version of the code includes the 6236debug output trace mechanism and has a much larger code and data size. Note 6237that these values will vary depending on the efficiency of the compiler and 6238the compiler options used during generation. 6239 6240 Previous Release: 6241 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 6242 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 6243 Current Release: 6244 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 6245 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 6246 6247 62482) iASL Compiler/Disassembler: 6249 6250Implemented support for the ACPI 3.0 Timer operator. 6251 6252Fixed a problem where the Default() operator was inadvertently ignored in a 6253Switch/Case block. This was a problem in the translation of the Switch 6254statement to If...Else pairs. 6255 6256Added support to allow a standalone Return operator, with no parentheses (or 6257operands). 6258 6259Fixed a problem with code generation for the ElseIf operator where the 6260translated Else...If parse tree was improperly constructed leading to the 6261loss of some code. 6262 6263---------------------------------------- 626422 September 2004. Summary of changes for version 20040922: 6265 62661) ACPI CA Core Subsystem: 6267 6268Fixed a problem with the implementation of the LNot() operator where "Ones" 6269was not returned for the TRUE case. Changed the code to return Ones instead 6270of (!Arg) which was usually 1. This change affects iASL constant folding for 6271this operator also. 6272 6273Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was not 6274initialized properly -- Now zero the entire buffer in this case where the 6275buffer already exists. 6276 6277Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32 6278Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all 6279related code considerably. This will require changes/updates to all OS 6280interface layers (OSLs.) 6281 6282Implemented a new external interface, AcpiInstallExceptionHandler, to allow 6283a system exception handler to be installed. This handler is invoked upon any 6284run-time exception that occurs during control method execution. 6285 6286Added support for the DSDT in AcpiTbFindTable. This allows the 6287DataTableRegion() operator to access the local copy of the DSDT. 6288 6289Code and Data Size: Current and previous core subsystem library sizes are 6290shown below. These are the code and data sizes for the acpica.lib produced 6291by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6292any ACPI driver or OSPM code. The debug version of the code includes the 6293debug output trace mechanism and has a much larger code and data size. Note 6294that these values will vary depending on the efficiency of the compiler and 6295the compiler options used during generation. 6296 6297 Previous Release: 6298 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 6299 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 6300 Current Release: 6301 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 6302 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 6303 6304 63052) iASL Compiler/Disassembler: 6306 6307Fixed a problem with constant folding and the LNot operator. LNot was 6308returning 1 in the TRUE case, not Ones as per the ACPI specification. This 6309could result in the generation of an incorrect folded/reduced constant. 6310 6311End-Of-File is now allowed within a "//"-style comment. A parse error no 6312longer occurs if such a comment is at the very end of the input ASL source 6313file. 6314 6315Implemented the "-r" option to override the Revision in the table header. 6316The initial use of this option will be to simplify the evaluation of the AML 6317interpreter by allowing a single ASL source module to be compiled for either 631832-bit or 64-bit integers. 6319 6320 6321---------------------------------------- 632227 August 2004. Summary of changes for version 20040827: 6323 63241) ACPI CA Core Subsystem: 6325 6326- Implemented support for implicit object conversion in the non-numeric 6327logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual, and 6328LNotEqual.) Any combination of Integers/Strings/Buffers may now be used; 6329the second operand is implicitly converted on the fly to match the type of 6330the first operand. For example: 6331 6332 LEqual (Source1, Source2) 6333 6334Source1 and Source2 must each evaluate to an integer, a string, or a buffer. 6335The data type of Source1 dictates the required type of Source2. Source2 is 6336implicitly converted if necessary to match the type of Source1. 6337 6338- Updated and corrected the behavior of the string conversion support. The 6339rules concerning conversion of buffers to strings (according to the ACPI 6340specification) are as follows: 6341 6342ToDecimalString - explicit byte-wise conversion of buffer to string of 6343decimal values (0-255) separated by commas. ToHexString - explicit byte-wise 6344conversion of buffer to string of hex values (0-FF) separated by commas. 6345ToString - explicit byte-wise conversion of buffer to string. Byte-by-byte 6346copy with no transform except NULL terminated. Any other implicit buffer-to- 6347string conversion - byte-wise conversion of buffer to string of hex values 6348(0-FF) separated by spaces. 6349 6350- Fixed typo in definition of AcpiGbl_EnableInterpreterSlack. 6351 6352- Fixed a problem in AcpiNsGetPathnameLength where the returned length was 6353one byte too short in the case of a node in the root scope. This could 6354cause a fault during debug output. 6355 6356- Code and Data Size: Current and previous core subsystem library sizes are 6357shown below. These are the code and data sizes for the acpica.lib produced 6358by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6359any ACPI driver or OSPM code. The debug version of the code includes the 6360debug output trace mechanism and has a much larger code and data size. Note 6361that these values will vary depending on the efficiency of the compiler and 6362the compiler options used during generation. 6363 6364 Previous Release: 6365 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 6366 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 6367 Current Release: 6368 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 6369 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 6370 6371 63722) iASL Compiler/Disassembler: 6373 6374- Fixed a Linux generation error. 6375 6376 6377---------------------------------------- 637816 August 2004. Summary of changes for version 20040816: 6379 63801) ACPI CA Core Subsystem: 6381 6382Designed and implemented support within the AML interpreter for the so- 6383called "implicit return". This support returns the result of the last ASL 6384operation within a control method, in the absence of an explicit Return() 6385operator. A few machines depend on this behavior, even though it is not 6386explicitly supported by the ASL language. It is optional support that can 6387be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag. 6388 6389Removed support for the PCI_Config address space from the internal low level 6390hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This 6391support was not used internally, and would not work correctly anyway because 6392the PCI bus number and segment number were not supported. There are 6393separate interfaces for PCI configuration space access because of the unique 6394interface. 6395 6396Code and Data Size: Current and previous core subsystem library sizes are 6397shown below. These are the code and data sizes for the acpica.lib produced 6398by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6399any ACPI driver or OSPM code. The debug version of the code includes the 6400debug output trace mechanism and has a much larger code and data size. Note 6401that these values will vary depending on the efficiency of the compiler and 6402the compiler options used during generation. 6403 6404 Previous Release: 6405 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 6406 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 6407 Current Release: 6408 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 6409 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 6410 6411 64122) iASL Compiler/Disassembler: 6413 6414Fixed a problem where constants in ASL expressions at the root level (not 6415within a control method) could be inadvertently truncated during code 6416generation. This problem was introduced in the 20040715 release. 6417 6418 6419---------------------------------------- 642015 July 2004. Summary of changes for version 20040715: 6421 64221) ACPI CA Core Subsystem: 6423 6424Restructured the internal HW GPE interfaces to pass/track the current state 6425of interrupts (enabled/disabled) in order to avoid possible deadlock and 6426increase flexibility of the interfaces. 6427 6428Implemented a "lexicographical compare" for String and Buffer objects within 6429the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual -- 6430as per further clarification to the ACPI specification. Behavior is similar 6431to C library "strcmp". 6432 6433Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable 6434external function. In the 32-bit non-debug case, the stack use has been 6435reduced from 168 bytes to 32 bytes. 6436 6437Deployed a new run-time configuration flag, AcpiGbl_EnableInterpreterSlack, 6438whose purpose is to allow the AML interpreter to forgive certain bad AML 6439constructs. Default setting is FALSE. 6440 6441Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field IO 6442support code. If enabled, it allows field access to go beyond the end of a 6443region definition if the field is within the region length rounded up to the 6444next access width boundary (a common coding error.) 6445 6446Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to 6447ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also, these 6448symbols are lowercased by the latest version of the AcpiSrc tool. 6449 6450The prototypes for the PCI interfaces in acpiosxf.h have been updated to 6451rename "Register" to simply "Reg" to prevent certain compilers from 6452complaining. 6453 6454Code and Data Size: Current and previous core subsystem library sizes are 6455shown below. These are the code and data sizes for the acpica.lib produced 6456by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6457any ACPI driver or OSPM code. The debug version of the code includes the 6458debug output trace mechanism and has a much larger code and data size. Note 6459that these values will vary depending on the efficiency of the compiler and 6460the compiler options used during generation. 6461 6462 Previous Release: 6463 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 6464 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 6465 Current Release: 6466 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 6467 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 6468 6469 64702) iASL Compiler/Disassembler: 6471 6472Implemented full support for Package objects within the Case() operator. 6473Note: The Break() operator is currently not supported within Case blocks 6474(TermLists) as there is some question about backward compatibility with ACPI 64751.0 interpreters. 6476 6477 6478Fixed a problem where complex terms were not supported properly within the 6479Switch() operator. 6480 6481Eliminated extraneous warning for compiler-emitted reserved names of the 6482form "_T_x". (Used in Switch/Case operators.) 6483 6484Eliminated optimization messages for "_T_x" objects and small constants 6485within the DefinitionBlock operator. 6486 6487 6488---------------------------------------- 648915 June 2004. Summary of changes for version 20040615: 6490 64911) ACPI CA Core Subsystem: 6492 6493Implemented support for Buffer and String objects (as per ACPI 2.0) for the 6494following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 6495LLessEqual. 6496 6497All directory names in the entire source package are lower case, as they 6498were in earlier releases. 6499 6500Implemented "Disassemble" command in the AML debugger that will disassemble 6501a single control method. 6502 6503Code and Data Size: Current and previous core subsystem library sizes are 6504shown below. These are the code and data sizes for the acpica.lib produced 6505by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6506any ACPI driver or OSPM code. The debug version of the code includes the 6507debug output trace mechanism and has a much larger code and data size. Note 6508that these values will vary depending on the efficiency of the compiler and 6509the compiler options used during generation. 6510 6511 Previous Release: 6512 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 6513 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 6514 6515 Current Release: 6516 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 6517 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 6518 6519 65202) iASL Compiler/Disassembler: 6521 6522Implemented support for Buffer and String objects (as per ACPI 2.0) for the 6523following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 6524LLessEqual. 6525 6526All directory names in the entire source package are lower case, as they 6527were in earlier releases. 6528 6529Fixed a fault when using the -g or -d<nofilename> options if the FADT was 6530not found. 6531 6532Fixed an issue with the Windows version of the compiler where later versions 6533of Windows place the FADT in the registry under the name "FADT" and not 6534"FACP" as earlier versions did. This applies when using the -g or - 6535d<nofilename> options. The compiler now looks for both strings as 6536necessary. 6537 6538Fixed a problem with compiler namepath optimization where a namepath within 6539the Scope() operator could not be optimized if the namepath was a subpath of 6540the current scope path. 6541 6542---------------------------------------- 654327 May 2004. Summary of changes for version 20040527: 6544 65451) ACPI CA Core Subsystem: 6546 6547Completed a new design and implementation for EBDA (Extended BIOS Data Area) 6548support in the RSDP scan code. The original code improperly scanned for the 6549EBDA by simply scanning from memory location 0 to 0x400. The correct method 6550is to first obtain the EBDA pointer from within the BIOS data area, then 6551scan 1K of memory starting at the EBDA pointer. There appear to be few if 6552any machines that place the RSDP in the EBDA, however. 6553 6554Integrated a fix for a possible fault during evaluation of BufferField 6555arguments. Obsolete code that was causing the problem was removed. 6556 6557Found and fixed a problem in the Field Support Code where data could be 6558corrupted on a bit field read that starts on an aligned boundary but does 6559not end on an aligned boundary. Merged the read/write "datum length" 6560calculation code into a common procedure. 6561 6562Rolled in a couple of changes to the FreeBSD-specific header. 6563 6564 6565Code and Data Size: Current and previous core subsystem library sizes are 6566shown below. These are the code and data sizes for the acpica.lib produced 6567by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6568any ACPI driver or OSPM code. The debug version of the code includes the 6569debug output trace mechanism and has a much larger code and data size. Note 6570that these values will vary depending on the efficiency of the compiler and 6571the compiler options used during generation. 6572 6573 Previous Release: 6574 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 6575 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 6576 Current Release: 6577 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 6578 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 6579 6580 65812) iASL Compiler/Disassembler: 6582 6583Fixed a generation warning produced by some overly-verbose compilers for a 658464-bit constant. 6585 6586---------------------------------------- 658714 May 2004. Summary of changes for version 20040514: 6588 65891) ACPI CA Core Subsystem: 6590 6591Fixed a problem where hardware GPE enable bits sometimes not set properly 6592during and after GPE method execution. Result of 04/27 changes. 6593 6594Removed extra "clear all GPEs" when sleeping/waking. 6595 6596Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single 6597AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above to 6598the new AcpiEv* calls as appropriate. 6599 6600ACPI_OS_NAME was removed from the OS-specific headers. The default name is 6601now "Microsoft Windows NT" for maximum compatibility. However this can be 6602changed by modifying the acconfig.h file. 6603 6604Allow a single invocation of AcpiInstallNotifyHandler for a handler that 6605traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag. 6606 6607Run _INI methods on ThermalZone objects. This is against the ACPI 6608specification, but there is apparently ASL code in the field that has these 6609_INI methods, and apparently "other" AML interpreters execute them. 6610 6611Performed a full 16/32/64 bit lint that resulted in some small changes. 6612 6613Added a sleep simulation command to the AML debugger to test sleep code. 6614 6615Code and Data Size: Current and previous core subsystem library sizes are 6616shown below. These are the code and data sizes for the acpica.lib produced 6617by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6618any ACPI driver or OSPM code. The debug version of the code includes the 6619debug output trace mechanism and has a much larger code and data size. Note 6620that these values will vary depending on the efficiency of the compiler and 6621the compiler options used during generation. 6622 6623 Previous Release: 6624 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 6625 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 6626 Current Release: 6627 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 6628 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 6629 6630---------------------------------------- 663127 April 2004. Summary of changes for version 20040427: 6632 66331) ACPI CA Core Subsystem: 6634 6635Completed a major overhaul of the GPE handling within ACPI CA. There are 6636now three types of GPEs: wake-only, runtime-only, and combination wake/run. 6637The only GPEs allowed to be combination wake/run are for button-style 6638devices such as a control-method power button, control-method sleep button, 6639or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are not 6640referenced by any _PRW methods are marked for "runtime" and hardware 6641enabled. Any GPE that is referenced by a _PRW method is marked for "wake" 6642(and disabled at runtime). However, at sleep time, only those GPEs that 6643have been specifically enabled for wake via the AcpiEnableGpe interface will 6644actually be hardware enabled. 6645 6646A new external interface has been added, AcpiSetGpeType(), that is meant to 6647be used by device drivers to force a GPE to a particular type. It will be 6648especially useful for the drivers for the button devices mentioned above. 6649 6650Completed restructuring of the ACPI CA initialization sequence so that 6651default operation region handlers are installed before GPEs are initialized 6652and the _PRW methods are executed. This will prevent errors when the _PRW 6653methods attempt to access system memory or I/O space. 6654 6655GPE enable/disable no longer reads the GPE enable register. We now keep the 6656enable info for runtime and wake separate and in the GPE_EVENT_INFO. We 6657thus no longer depend on the hardware to maintain these bits. 6658 6659Always clear the wake status and fixed/GPE status bits before sleep, even 6660for state S5. 6661 6662Improved the AML debugger output for displaying the GPE blocks and their 6663current status. 6664 6665Added new strings for the _OSI method, of the form "Windows 2001 SPx" where 6666x = 0,1,2,3,4. 6667 6668Fixed a problem where the physical address was incorrectly calculated when 6669the Load() operator was used to directly load from an Operation Region (vs. 6670loading from a Field object.) Also added check for minimum table length for 6671this case. 6672 6673Fix for multiple mutex acquisition. Restore original thread SyncLevel on 6674mutex release. 6675 6676Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for 6677consistency with the other fields returned. 6678 6679Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such 6680structure for each GPE in the system, so the size of this structure is 6681important. 6682 6683CPU stack requirement reduction: Cleaned up the method execution and object 6684evaluation paths so that now a parameter structure is passed, instead of 6685copying the various method parameters over and over again. 6686 6687In evregion.c: Correctly exit and reenter the interpreter region if and 6688only if dispatching an operation region request to a user-installed handler. 6689Do not exit/reenter when dispatching to a default handler (e.g., default 6690system memory or I/O handlers) 6691 6692 6693Notes for updating drivers for the new GPE support. The following changes 6694must be made to ACPI-related device drivers that are attached to one or more 6695GPEs: (This information will be added to the ACPI CA Programmer Reference.) 6696 66971) AcpiInstallGpeHandler no longer automatically enables the GPE, you must 6698explicitly call AcpiEnableGpe. 66992) There is a new interface called AcpiSetGpeType. This should be called 6700before enabling the GPE. Also, this interface will automatically disable 6701the GPE if it is currently enabled. 67023) AcpiEnableGpe no longer supports a GPE type flag. 6703 6704Specific drivers that must be changed: 67051) EC driver: 6706 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED, 6707AeGpeHandler, NULL); 6708 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME); 6709 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR); 6710 67112) Button Drivers (Power, Lid, Sleep): 6712Run _PRW method under parent device 6713If _PRW exists: /* This is a control-method button */ 6714 Extract GPE number and possibly GpeDevice 6715 AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN); 6716 AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR); 6717 6718For all other devices that have _PRWs, we automatically set the GPE type to 6719ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled. This 6720must be done on a selective basis, usually requiring some kind of user app 6721to allow the user to pick the wake devices. 6722 6723 6724Code and Data Size: Current and previous core subsystem library sizes are 6725shown below. These are the code and data sizes for the acpica.lib produced 6726by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6727any ACPI driver or OSPM code. The debug version of the code includes the 6728debug output trace mechanism and has a much larger code and data size. Note 6729that these values will vary depending on the efficiency of the compiler and 6730the compiler options used during generation. 6731 6732 Previous Release: 6733 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 6734 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 6735 Current Release: 6736 6737 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 6738 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 6739 6740 6741 6742---------------------------------------- 674302 April 2004. Summary of changes for version 20040402: 6744 67451) ACPI CA Core Subsystem: 6746 6747Fixed an interpreter problem where an indirect store through an ArgX 6748parameter was incorrectly applying the "implicit conversion rules" during 6749the store. From the ACPI specification: "If the target is a method local or 6750argument (LocalX or ArgX), no conversion is performed and the result is 6751stored directly to the target". The new behavior is to disable implicit 6752conversion during ALL stores to an ArgX. 6753 6754Changed the behavior of the _PRW method scan to ignore any and all errors 6755returned by a given _PRW. This prevents the scan from aborting from the 6756failure of any single _PRW. 6757 6758Moved the runtime configuration parameters from the global init procedure to 6759static variables in acglobal.h. This will allow the host to override the 6760default values easily. 6761 6762Code and Data Size: Current and previous core subsystem library sizes are 6763shown below. These are the code and data sizes for the acpica.lib produced 6764by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6765any ACPI driver or OSPM code. The debug version of the code includes the 6766debug output trace mechanism and has a much larger code and data size. Note 6767that these values will vary depending on the efficiency of the compiler and 6768the compiler options used during generation. 6769 6770 Previous Release: 6771 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 6772 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 6773 Current Release: 6774 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 6775 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 6776 6777 67782) iASL Compiler/Disassembler: 6779 6780iASL now fully disassembles SSDTs. However, External() statements are not 6781generated automatically for unresolved symbols at this time. This is a 6782planned feature for future implementation. 6783 6784Fixed a scoping problem in the disassembler that occurs when the type of the 6785target of a Scope() operator is overridden. This problem caused an 6786incorrectly nested internal namespace to be constructed. 6787 6788Any warnings or errors that are emitted during disassembly are now commented 6789out automatically so that the resulting file can be recompiled without any 6790hand editing. 6791 6792---------------------------------------- 679326 March 2004. Summary of changes for version 20040326: 6794 67951) ACPI CA Core Subsystem: 6796 6797Implemented support for "wake" GPEs via interaction between GPEs and the 6798_PRW methods. Every GPE that is pointed to by one or more _PRWs is 6799identified as a WAKE GPE and by default will no longer be enabled at 6800runtime. Previously, we were blindly enabling all GPEs with a corresponding 6801_Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway. We 6802believe this has been the cause of thousands of "spurious" GPEs on some 6803systems. 6804 6805This new GPE behavior is can be reverted to the original behavior (enable 6806ALL GPEs at runtime) via a runtime flag. 6807 6808Fixed a problem where aliased control methods could not access objects 6809properly. The proper scope within the namespace was not initialized 6810(transferred to the target of the aliased method) before executing the 6811target method. 6812 6813Fixed a potential race condition on internal object deletion on the return 6814object in AcpiEvaluateObject. 6815 6816Integrated a fix for resource descriptors where both _MEM and _MTP were 6817being extracted instead of just _MEM. (i.e. bitmask was incorrectly too 6818wide, 0x0F instead of 0x03.) 6819 6820Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName, preventing a 6821fault in some cases. 6822 6823Updated Notify() values for debug statements in evmisc.c 6824 6825Return proper status from AcpiUtMutexInitialize, not just simply AE_OK. 6826 6827Code and Data Size: Current and previous core subsystem library sizes are 6828shown below. These are the code and data sizes for the acpica.lib produced 6829by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6830any ACPI driver or OSPM code. The debug version of the code includes the 6831debug output trace mechanism and has a much larger code and data size. Note 6832that these values will vary depending on the efficiency of the compiler and 6833the compiler options used during generation. 6834 6835 Previous Release: 6836 6837 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 6838 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 6839 Current Release: 6840 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 6841 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 6842 6843---------------------------------------- 684411 March 2004. Summary of changes for version 20040311: 6845 68461) ACPI CA Core Subsystem: 6847 6848Fixed a problem where errors occurring during the parse phase of control 6849method execution did not abort cleanly. For example, objects created and 6850installed in the namespace were not deleted. This caused all subsequent 6851invocations of the method to return the AE_ALREADY_EXISTS exception. 6852 6853Implemented a mechanism to force a control method to "Serialized" execution 6854if the method attempts to create namespace objects. (The root of the 6855AE_ALREADY_EXISTS problem.) 6856 6857Implemented support for the predefined _OSI "internal" control method. 6858Initial supported strings are "Linux", "Windows 2000", "Windows 2001", and 6859"Windows 2001.1", and can be easily upgraded for new strings as necessary. 6860This feature will allow "other" operating systems to execute the fully 6861tested, "Windows" code path through the ASL code 6862 6863Global Lock Support: Now allows multiple acquires and releases with any 6864internal thread. Removed concept of "owning thread" for this special mutex. 6865 6866Fixed two functions that were inappropriately declaring large objects on the 6867CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage during 6868method execution considerably. 6869 6870Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the 6871S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT. 6872 6873Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs 6874defined on the machine. 6875 6876Implemented two runtime options: One to force all control method execution 6877to "Serialized" to mimic Windows behavior, another to disable _OSI support 6878if it causes problems on a given machine. 6879 6880Code and Data Size: Current and previous core subsystem library sizes are 6881shown below. These are the code and data sizes for the acpica.lib produced 6882by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6883any ACPI driver or OSPM code. The debug version of the code includes the 6884debug output trace mechanism and has a much larger code and data size. Note 6885that these values will vary depending on the efficiency of the compiler and 6886the compiler options used during generation. 6887 6888 Previous Release: 6889 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 6890 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 6891 Current Release: 6892 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 6893 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 6894 68952) iASL Compiler/Disassembler: 6896 6897Fixed an array size problem for FreeBSD that would cause the compiler to 6898fault. 6899 6900---------------------------------------- 690120 February 2004. Summary of changes for version 20040220: 6902 6903 69041) ACPI CA Core Subsystem: 6905 6906Implemented execution of _SxD methods for Device objects in the 6907GetObjectInfo interface. 6908 6909Fixed calls to _SST method to pass the correct arguments. 6910 6911Added a call to _SST on wake to restore to "working" state. 6912 6913Check for End-Of-Buffer failure case in the WalkResources interface. 6914 6915Integrated fix for 64-bit alignment issue in acglobal.h by moving two 6916structures to the beginning of the file. 6917 6918After wake, clear GPE status register(s) before enabling GPEs. 6919 6920After wake, clear/enable power button. (Perhaps we should clear/enable all 6921fixed events upon wake.) 6922 6923Fixed a couple of possible memory leaks in the Namespace manager. 6924 6925Integrated latest acnetbsd.h file. 6926 6927---------------------------------------- 692811 February 2004. Summary of changes for version 20040211: 6929 6930 69311) ACPI CA Core Subsystem: 6932 6933Completed investigation and implementation of the call-by-reference 6934mechanism for control method arguments. 6935 6936Fixed a problem where a store of an object into an indexed package could 6937fail if the store occurs within a different method than the method that 6938created the package. 6939 6940Fixed a problem where the ToDecimal operator could return incorrect results. 6941 6942Fixed a problem where the CopyObject operator could fail on some of the more 6943obscure objects (e.g., Reference objects.) 6944 6945Improved the output of the Debug object to display buffer, package, and 6946index objects. 6947 6948Fixed a problem where constructs of the form "RefOf (ArgX)" did not return 6949the expected result. 6950 6951Added permanent ACPI_REPORT_ERROR macros for all instances of the 6952ACPI_AML_INTERNAL exception. 6953 6954Integrated latest version of acfreebsd.h 6955 6956---------------------------------------- 695716 January 2004. Summary of changes for version 20040116: 6958 6959The purpose of this release is primarily to update the copyright years in 6960each module, thus causing a huge number of diffs. There are a few small 6961functional changes, however. 6962 69631) ACPI CA Core Subsystem: 6964 6965Improved error messages when there is a problem finding one or more of the 6966required base ACPI tables 6967 6968Reintroduced the definition of APIC_HEADER in actbl.h 6969 6970Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h) 6971 6972Removed extraneous reference to NewObj in dsmthdat.c 6973 69742) iASL compiler 6975 6976Fixed a problem introduced in December that disabled the correct disassembly 6977of Resource Templates 6978 6979 6980---------------------------------------- 698103 December 2003. Summary of changes for version 20031203: 6982 69831) ACPI CA Core Subsystem: 6984 6985Changed the initialization of Operation Regions during subsystem 6986init to perform two entire walks of the ACPI namespace; The first 6987to initialize the regions themselves, the second to execute the 6988_REG methods. This fixed some interdependencies across _REG 6989methods found on some machines. 6990 6991Fixed a problem where a Store(Local0, Local1) could simply update 6992the object reference count, and not create a new copy of the 6993object if the Local1 is uninitialized. 6994 6995Implemented support for the _SST reserved method during sleep 6996transitions. 6997 6998Implemented support to clear the SLP_TYP and SLP_EN bits when 6999waking up, this is apparently required by some machines. 7000 7001When sleeping, clear the wake status only if SleepState is not S5. 7002 7003Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect 7004pointer arithmetic advanced a string pointer too far. 7005 7006Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer 7007could be returned if the requested table has not been loaded. 7008 7009Within the support for IRQ resources, restructured the handling of 7010the active and edge/level bits. 7011 7012Fixed a few problems in AcpiPsxExecute() where memory could be 7013leaked under certain error conditions. 7014 7015Improved error messages for the cases where the ACPI mode could 7016not be entered. 7017 7018Code and Data Size: Current and previous core subsystem library 7019sizes are shown below. These are the code and data sizes for the 7020acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 7021these values do not include any ACPI driver or OSPM code. The 7022debug version of the code includes the debug output trace 7023mechanism and has a much larger code and data size. Note that 7024these values will vary depending on the efficiency of the compiler 7025and the compiler options used during generation. 7026 7027 Previous Release (20031029): 7028 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 7029 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 7030 Current Release: 7031 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 7032 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 7033 70342) iASL Compiler/Disassembler: 7035 7036Implemented a fix for the iASL disassembler where a bad index was 7037generated. This was most noticeable on 64-bit platforms 7038 7039 7040---------------------------------------- 704129 October 2003. Summary of changes for version 20031029: 7042 70431) ACPI CA Core Subsystem: 7044 7045 7046Fixed a problem where a level-triggered GPE with an associated 7047_Lxx control method was incorrectly cleared twice. 7048 7049Fixed a problem with the Field support code where an access can 7050occur beyond the end-of-region if the field is non-aligned but 7051extends to the very end of the parent region (resulted in an 7052AE_AML_REGION_LIMIT exception.) 7053 7054Fixed a problem with ACPI Fixed Events where an RT Clock handler 7055would not get invoked on an RTC event. The RTC event bitmasks for 7056the PM1 registers were not being initialized properly. 7057 7058Implemented support for executing _STA and _INI methods for 7059Processor objects. Although this is currently not part of the 7060ACPI specification, there is existing ASL code that depends on the 7061init-time execution of these methods. 7062 7063Implemented and deployed a GetDescriptorName function to decode 7064the various types of internal descriptors. Guards against null 7065descriptors during debug output also. 7066 7067Implemented and deployed a GetNodeName function to extract the 4- 7068character namespace node name. This function simplifies the debug 7069and error output, as well as guarding against null pointers during 7070output. 7071 7072Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to 7073simplify the debug and error output of 64-bit integers. This 7074macro replaces the HIDWORD and LODWORD macros for dumping these 7075integers. 7076 7077Updated the implementation of the Stall() operator to only call 7078AcpiOsStall(), and also return an error if the operand is larger 7079than 255. This preserves the required behavior of not 7080relinquishing the processor, as would happen if AcpiOsSleep() was 7081called for "long stalls". 7082 7083Constructs of the form "Store(LocalX,LocalX)" where LocalX is not 7084initialized are now treated as NOOPs. 7085 7086Cleaned up a handful of warnings during 64-bit generation. 7087 7088Fixed a reported error where and incorrect GPE number was passed 7089to the GPE dispatch handler. This value is only used for error 7090output, however. Used this opportunity to clean up and streamline 7091the GPE dispatch code. 7092 7093Code and Data Size: Current and previous core subsystem library 7094sizes are shown below. These are the code and data sizes for the 7095acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 7096these values do not include any ACPI driver or OSPM code. The 7097 7098debug version of the code includes the debug output trace 7099mechanism and has a much larger code and data size. Note that 7100these values will vary depending on the efficiency of the compiler 7101and the compiler options used during generation. 7102 7103 Previous Release (20031002): 7104 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 7105 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 7106 Current Release: 7107 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 7108 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 7109 7110 71112) iASL Compiler/Disassembler: 7112 7113Updated the iASL compiler to return an error if the operand to the 7114Stall() operator is larger than 255. 7115 7116 7117---------------------------------------- 711802 October 2003. Summary of changes for version 20031002: 7119 7120 71211) ACPI CA Core Subsystem: 7122 7123Fixed a problem with Index Fields where the index was not 7124incremented for fields that require multiple writes to the 7125index/data registers (Fields that are wider than the data 7126register.) 7127 7128Fixed a problem with all Field objects where a write could go 7129beyond the end-of-field if the field was larger than the access 7130granularity and therefore required multiple writes to complete the 7131request. An extra write beyond the end of the field could happen 7132inadvertently. 7133 7134Fixed a problem with Index Fields where a BUFFER_OVERFLOW error 7135would incorrectly be returned if the width of the Data Register 7136was larger than the specified field access width. 7137 7138Completed fixes for LoadTable() and Unload() and verified their 7139operation. Implemented full support for the "DdbHandle" object 7140throughout the ACPI CA subsystem. 7141 7142Implemented full support for the MADT and ECDT tables in the ACPI 7143CA header files. Even though these tables are not directly 7144consumed by ACPI CA, the header definitions are useful for ACPI 7145device drivers. 7146 7147Integrated resource descriptor fixes posted to the Linux ACPI 7148list. This included checks for minimum descriptor length, and 7149support for trailing NULL strings within descriptors that have 7150optional string elements. 7151 7152Code and Data Size: Current and previous core subsystem library 7153sizes are shown below. These are the code and data sizes for the 7154acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 7155these values do not include any ACPI driver or OSPM code. The 7156debug version of the code includes the debug output trace 7157mechanism and has a much larger code and data size. Note that 7158these values will vary depending on the efficiency of the compiler 7159and the compiler options used during generation. 7160 7161 Previous Release (20030918): 7162 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 7163 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 7164 Current Release: 7165 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 7166 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 7167 7168 71692) iASL Compiler: 7170 7171Implemented detection of non-ASCII characters within the input 7172source ASL file. This catches attempts to compile binary (AML) 7173files early in the compile, with an informative error message. 7174 7175Fixed a problem where the disassembler would fault if the output 7176filename could not be generated or if the output file could not be 7177opened. 7178 7179---------------------------------------- 718018 September 2003. Summary of changes for version 20030918: 7181 7182 71831) ACPI CA Core Subsystem: 7184 7185Found and fixed a longstanding problem with the late execution of 7186the various deferred AML opcodes (such as Operation Regions, 7187Buffer Fields, Buffers, and Packages). If the name string 7188specified for the name of the new object placed the object in a 7189scope other than the current scope, the initialization/execution 7190of the opcode failed. The solution to this problem was to 7191implement a mechanism where the late execution of such opcodes 7192does not attempt to lookup/create the name a second time in an 7193incorrect scope. This fixes the "region size computed 7194incorrectly" problem. 7195 7196Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a 7197Global Lock AE_BAD_PARAMETER error. 7198 7199Fixed several 64-bit issues with prototypes, casting and data 7200types. 7201 7202Removed duplicate prototype from acdisasm.h 7203 7204Fixed an issue involving EC Operation Region Detach (Shaohua Li) 7205 7206Code and Data Size: Current and previous core subsystem library 7207sizes are shown below. These are the code and data sizes for the 7208acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 7209these values do not include any ACPI driver or OSPM code. The 7210debug version of the code includes the debug output trace 7211mechanism and has a much larger code and data size. Note that 7212these values will vary depending on the efficiency of the compiler 7213and the compiler options used during generation. 7214 7215 Previous Release: 7216 7217 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 7218 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 7219 Current Release: 7220 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 7221 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 7222 7223 72242) Linux: 7225 7226Fixed the AcpiOsSleep implementation in osunixxf.c to pass the 7227correct sleep time in seconds. 7228 7229---------------------------------------- 723014 July 2003. Summary of changes for version 20030619: 7231 72321) ACPI CA Core Subsystem: 7233 7234Parse SSDTs in order discovered, as opposed to reverse order 7235(Hrvoje Habjanic) 7236 7237Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas 7238Klausner, 7239 Nate Lawson) 7240 7241 72422) Linux: 7243 7244Dynamically allocate SDT list (suggested by Andi Kleen) 7245 7246proc function return value cleanups (Andi Kleen) 7247 7248Correctly handle NMI watchdog during long stalls (Andrew Morton) 7249 7250Make it so acpismp=force works (reported by Andrew Morton) 7251 7252 7253---------------------------------------- 725419 June 2003. Summary of changes for version 20030619: 7255 72561) ACPI CA Core Subsystem: 7257 7258Fix To/FromBCD, eliminating the need for an arch-specific #define. 7259 7260Do not acquire a semaphore in the S5 shutdown path. 7261 7262Fix ex_digits_needed for 0. (Takayoshi Kochi) 7263 7264Fix sleep/stall code reversal. (Andi Kleen) 7265 7266Revert a change having to do with control method calling 7267semantics. 7268 72692) Linux: 7270 7271acpiphp update (Takayoshi Kochi) 7272 7273Export acpi_disabled for sonypi (Stelian Pop) 7274 7275Mention acpismp=force in config help 7276 7277Re-add acpitable.c and acpismp=force. This improves backwards 7278 7279compatibility and also cleans up the code to a significant degree. 7280 7281Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge) 7282 7283---------------------------------------- 728422 May 2003. Summary of changes for version 20030522: 7285 72861) ACPI CA Core Subsystem: 7287 7288Found and fixed a reported problem where an AE_NOT_FOUND error 7289occurred occasionally during _BST evaluation. This turned out to 7290be an Owner ID allocation issue where a called method did not get 7291a new ID assigned to it. Eventually, (after 64k calls), the Owner 7292ID UINT16 would wraparound so that the ID would be the same as the 7293caller's and the called method would delete the caller's 7294namespace. 7295 7296Implemented extended error reporting for control methods that are 7297aborted due to a run-time exception. Output includes the exact 7298AML instruction that caused the method abort, a dump of the method 7299locals and arguments at the time of the abort, and a trace of all 7300nested control method calls. 7301 7302Modified the interpreter to allow the creation of buffers of zero 7303length from the AML code. Implemented new code to ensure that no 7304attempt is made to actually allocate a memory buffer (of length 7305zero) - instead, a simple buffer object with a NULL buffer pointer 7306and length zero is created. A warning is no longer issued when 7307the AML attempts to create a zero-length buffer. 7308 7309Implemented a workaround for the "leading asterisk issue" in 7310_HIDs, _UIDs, and _CIDs in the AML interpreter. One leading 7311asterisk is automatically removed if present in any HID, UID, or 7312CID strings. The iASL compiler will still flag this asterisk as 7313an error, however. 7314 7315Implemented full support for _CID methods that return a package of 7316multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface 7317now additionally returns a device _CID list if present. This 7318required a change to the external interface in order to pass an 7319ACPI_BUFFER object as a parameter since the _CID list is of 7320variable length. 7321 7322Fixed a problem with the new AE_SAME_HANDLER exception where 7323handler initialization code did not know about this exception. 7324 7325Code and Data Size: Current and previous core subsystem library 7326sizes are shown below. These are the code and data sizes for the 7327acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 7328these values do not include any ACPI driver or OSPM code. The 7329debug version of the code includes the debug output trace 7330mechanism and has a much larger code and data size. Note that 7331these values will vary depending on the efficiency of the compiler 7332and the compiler options used during generation. 7333 7334 Previous Release (20030509): 7335 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 7336 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 7337 Current Release: 7338 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 7339 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 7340 7341 73422) Linux: 7343 7344Fixed a bug in which we would reinitialize the ACPI interrupt 7345after it was already working, thus disabling all ACPI and the IRQs 7346for any other device sharing the interrupt. (Thanks to Stian 7347Jordet) 7348 7349Toshiba driver update (John Belmonte) 7350 7351Return only 0 or 1 for our interrupt handler status (Andrew 7352Morton) 7353 7354 73553) iASL Compiler: 7356 7357Fixed a reported problem where multiple (nested) ElseIf() 7358statements were not handled correctly by the compiler, resulting 7359in incorrect warnings and incorrect AML code. This was a problem 7360in both the ASL parser and the code generator. 7361 7362 73634) Documentation: 7364 7365Added changes to existing interfaces, new exception codes, and new 7366text concerning reference count object management versus garbage 7367collection. 7368 7369---------------------------------------- 737009 May 2003. Summary of changes for version 20030509. 7371 7372 73731) ACPI CA Core Subsystem: 7374 7375Changed the subsystem initialization sequence to hold off 7376installation of address space handlers until the hardware has been 7377initialized and the system has entered ACPI mode. This is because 7378the installation of space handlers can cause _REG methods to be 7379run. Previously, the _REG methods could potentially be run before 7380ACPI mode was enabled. 7381 7382Fixed some memory leak issues related to address space handler and 7383notify handler installation. There were some problems with the 7384reference count mechanism caused by the fact that the handler 7385objects are shared across several namespace objects. 7386 7387Fixed a reported problem where reference counts within the 7388namespace were not properly updated when named objects created by 7389method execution were deleted. 7390 7391Fixed a reported problem where multiple SSDTs caused a deletion 7392issue during subsystem termination. Restructured the table data 7393structures to simplify the linked lists and the related code. 7394 7395Fixed a problem where the table ID associated with secondary 7396tables (SSDTs) was not being propagated into the namespace objects 7397created by those tables. This would only present a problem for 7398tables that are unloaded at run-time, however. 7399 7400Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE 7401type as the length parameter (instead of UINT32). 7402 7403Solved a long-standing problem where an ALREADY_EXISTS error 7404appears on various systems. This problem could happen when there 7405are multiple PCI_Config operation regions under a single PCI root 7406bus. This doesn't happen very frequently, but there are some 7407systems that do this in the ASL. 7408 7409Fixed a reported problem where the internal DeleteNode function 7410was incorrectly handling the case where a namespace node was the 7411first in the parent's child list, and had additional peers (not 7412the only child, but first in the list of children.) 7413 7414Code and Data Size: Current core subsystem library sizes are shown 7415below. These are the code and data sizes for the acpica.lib 7416produced by the Microsoft Visual C++ 6.0 compiler, and these 7417values do not include any ACPI driver or OSPM code. The debug 7418version of the code includes the debug output trace mechanism and 7419has a much larger code and data size. Note that these values will 7420vary depending on the efficiency of the compiler and the compiler 7421options used during generation. 7422 7423 Previous Release 7424 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 7425 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 7426 Current Release: 7427 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 7428 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 7429 7430 74312) Linux: 7432 7433Allow ":" in OS override string (Ducrot Bruno) 7434 7435Kobject fix (Greg KH) 7436 7437 74383 iASL Compiler/Disassembler: 7439 7440Fixed a problem in the generation of the C source code files (AML 7441is emitted in C source statements for BIOS inclusion) where the 7442Ascii dump that appears within a C comment at the end of each line 7443could cause a compile time error if the AML sequence happens to 7444have an open comment or close comment sequence embedded. 7445 7446 7447---------------------------------------- 744824 April 2003. Summary of changes for version 20030424. 7449 7450 74511) ACPI CA Core Subsystem: 7452 7453Support for big-endian systems has been implemented. Most of the 7454support has been invisibly added behind big-endian versions of the 7455ACPI_MOVE_* macros. 7456 7457Fixed a problem in AcpiHwDisableGpeBlock() and 7458AcpiHwClearGpeBlock() where an incorrect offset was passed to the 7459low level hardware write routine. The offset parameter was 7460actually eliminated from the low level read/write routines because 7461they had become obsolete. 7462 7463Fixed a problem where a handler object was deleted twice during 7464the removal of a fixed event handler. 7465 7466 74672) Linux: 7468 7469A fix for SMP systems with link devices was contributed by 7470 7471Compaq's Dan Zink. 7472 7473(2.5) Return whether we handled the interrupt in our IRQ handler. 7474(Linux ISRs no longer return void, so we can propagate the handler 7475return value from the ACPI CA core back to the OS.) 7476 7477 7478 74793) Documentation: 7480 7481The ACPI CA Programmer Reference has been updated to reflect new 7482interfaces and changes to existing interfaces. 7483 7484---------------------------------------- 748528 March 2003. Summary of changes for version 20030328. 7486 74871) ACPI CA Core Subsystem: 7488 7489The GPE Block Device support has been completed. New interfaces 7490are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event 7491interfaces (enable, disable, clear, getstatus) have been split 7492into separate interfaces for Fixed Events and General Purpose 7493Events (GPEs) in order to support GPE Block Devices properly. 7494 7495Fixed a problem where the error message "Failed to acquire 7496semaphore" would appear during operations on the embedded 7497controller (EC). 7498 7499Code and Data Size: Current core subsystem library sizes are shown 7500below. These are the code and data sizes for the acpica.lib 7501produced by the Microsoft Visual C++ 6.0 compiler, and these 7502values do not include any ACPI driver or OSPM code. The debug 7503version of the code includes the debug output trace mechanism and 7504has a much larger code and data size. Note that these values will 7505vary depending on the efficiency of the compiler and the compiler 7506options used during generation. 7507 7508 Previous Release 7509 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 7510 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 7511 Current Release: 7512 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 7513 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 7514 7515 7516---------------------------------------- 751728 February 2003. Summary of changes for version 20030228. 7518 7519 75201) ACPI CA Core Subsystem: 7521 7522The GPE handling and dispatch code has been completely overhauled 7523in preparation for support of GPE Block Devices (ID ACPI0006). 7524This affects internal data structures and code only; there should 7525be no differences visible externally. One new file has been 7526added, evgpeblk.c 7527 7528The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only 7529fields that are used to determine the GPE block lengths. The 7530REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address 7531structures are ignored. This is per the ACPI specification but it 7532isn't very clear. The full 256 Block 0/1 GPEs are now supported 7533(the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128). 7534 7535In the SCI interrupt handler, removed the read of the PM1_CONTROL 7536register to look at the SCI_EN bit. On some machines, this read 7537causes an SMI event and greatly slows down SCI events. (This may 7538in fact be the cause of slow battery status response on some 7539systems.) 7540 7541Fixed a problem where a store of a NULL string to a package object 7542could cause the premature deletion of the object. This was seen 7543during execution of the battery _BIF method on some systems, 7544resulting in no battery data being returned. 7545 7546Added AcpiWalkResources interface to simplify parsing of resource 7547lists. 7548 7549Code and Data Size: Current core subsystem library sizes are shown 7550below. These are the code and data sizes for the acpica.lib 7551produced by the Microsoft Visual C++ 6.0 compiler, and these 7552values do not include any ACPI driver or OSPM code. The debug 7553version of the code includes the debug output trace mechanism and 7554has a much larger code and data size. Note that these values will 7555vary depending on the efficiency of the compiler and the compiler 7556options used during generation. 7557 7558 Previous Release 7559 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 7560 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 7561 Current Release: 7562 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 7563 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 7564 7565 75662) Linux 7567 7568S3 fixes (Ole Rohne) 7569 7570Update ACPI PHP driver with to use new acpi_walk_resource API 7571(Bjorn Helgaas) 7572 7573Add S4BIOS support (Pavel Machek) 7574 7575Map in entire table before performing checksum (John Stultz) 7576 7577Expand the mem= cmdline to allow the specification of reserved and 7578ACPI DATA blocks (Pavel Machek) 7579 7580Never use ACPI on VISWS 7581 7582Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez) 7583 7584Revert a change that allowed P_BLK lengths to be 4 or 5. This is 7585causing us to think that some systems support C2 when they really 7586don't. 7587 7588Do not count processor objects for non-present CPUs (Thanks to 7589Dominik Brodowski) 7590 7591 75923) iASL Compiler: 7593 7594Fixed a problem where ASL include files could not be found and 7595opened. 7596 7597Added support for the _PDC reserved name. 7598 7599 7600---------------------------------------- 760122 January 2003. Summary of changes for version 20030122. 7602 7603 76041) ACPI CA Core Subsystem: 7605 7606Added a check for constructs of the form: Store (Local0, Local0) 7607where Local0 is not initialized. Apparently, some BIOS 7608programmers believe that this is a NOOP. Since this store doesn't 7609do anything anyway, the new prototype behavior will ignore this 7610error. This is a case where we can relax the strict checking in 7611the interpreter in the name of compatibility. 7612 7613 76142) Linux 7615 7616The AcpiSrc Source Conversion Utility has been released with the 7617Linux package for the first time. This is the utility that is 7618used to convert the ACPI CA base source code to the Linux version. 7619 7620(Both) Handle P_BLK lengths shorter than 6 more gracefully 7621 7622(Both) Move more headers to include/acpi, and delete an unused 7623header. 7624 7625(Both) Move drivers/acpi/include directory to include/acpi 7626 7627(Both) Boot functions don't use cmdline, so don't pass it around 7628 7629(Both) Remove include of unused header (Adrian Bunk) 7630 7631(Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since 7632the 7633former now also includes the latter, acpiphp.h only needs the one, 7634now. 7635 7636(2.5) Make it possible to select method of bios restoring after S3 7637resume. [=> no more ugly ifdefs] (Pavel Machek) 7638 7639(2.5) Make proc write interfaces work (Pavel Machek) 7640 7641(2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski) 7642 7643(2.5) Break out ACPI Perf code into its own module, under cpufreq 7644(Dominik Brodowski) 7645 7646(2.4) S4BIOS support (Ducrot Bruno) 7647 7648(2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio 7649Visinoni) 7650 7651 76523) iASL Compiler: 7653 7654Added support to disassemble SSDT and PSDTs. 7655 7656Implemented support to obtain SSDTs from the Windows registry if 7657available. 7658 7659 7660---------------------------------------- 766109 January 2003. Summary of changes for version 20030109. 7662 76631) ACPI CA Core Subsystem: 7664 7665Changed the behavior of the internal Buffer-to-String conversion 7666function. The current ACPI specification states that the contents 7667of the buffer are "converted to a string of two-character 7668hexadecimal numbers, each separated by a space". Unfortunately, 7669this definition is not backwards compatible with existing ACPI 1.0 7670implementations (although the behavior was not defined in the ACPI 76711.0 specification). The new behavior simply copies data from the 7672buffer to the string until a null character is found or the end of 7673the buffer is reached. The new String object is always null 7674terminated. This problem was seen during the generation of _BIF 7675battery data where incorrect strings were returned for battery 7676type, etc. This will also require an errata to the ACPI 7677specification. 7678 7679Renamed all instances of NATIVE_UINT and NATIVE_INT to 7680ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively. 7681 7682Copyright in all module headers (both Linux and non-Linux) has be 7683updated to 2003. 7684 7685Code and Data Size: Current core subsystem library sizes are shown 7686below. These are the code and data sizes for the acpica.lib 7687produced by the Microsoft Visual C++ 6.0 compiler, and these 7688values do not include any ACPI driver or OSPM code. The debug 7689version of the code includes the debug output trace mechanism and 7690has a much larger code and data size. Note that these values will 7691vary depending on the efficiency of the compiler and the compiler 7692options used during generation. 7693 7694 Previous Release 7695 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 7696 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 7697 Current Release: 7698 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 7699 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 7700 7701 77022) Linux 7703 7704Fixed an oops on module insertion/removal (Matthew Tippett) 7705 7706(2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante) 7707 7708(2.5) Replace pr_debug (Randy Dunlap) 7709 7710(2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski) 7711 7712(Both) Eliminate spawning of thread from timer callback, in favor 7713of schedule_work() 7714 7715(Both) Show Lid status in /proc (Zdenek OGAR Skalak) 7716 7717(Both) Added define for Fixed Function HW region (Matthew Wilcox) 7718 7719(Both) Add missing statics to button.c (Pavel Machek) 7720 7721Several changes have been made to the source code translation 7722utility that generates the Linux Code in order to make the code 7723more "Linux-like": 7724 7725All typedefs on structs and unions have been removed in keeping 7726with the Linux coding style. 7727 7728Removed the non-Linux SourceSafe module revision number from each 7729module header. 7730 7731Completed major overhaul of symbols to be lowercased for linux. 7732Doubled the number of symbols that are lowercased. 7733 7734Fixed a problem where identifiers within procedure headers and 7735within quotes were not fully lower cased (they were left with a 7736starting capital.) 7737 7738Some C macros whose only purpose is to allow the generation of 16- 7739bit code are now completely removed in the Linux code, increasing 7740readability and maintainability. 7741 7742---------------------------------------- 7743 774412 December 2002. Summary of changes for version 20021212. 7745 7746 77471) ACPI CA Core Subsystem: 7748 7749Fixed a problem where the creation of a zero-length AML Buffer 7750would cause a fault. 7751 7752Fixed a problem where a Buffer object that pointed to a static AML 7753buffer (in an ACPI table) could inadvertently be deleted, causing 7754memory corruption. 7755 7756Fixed a problem where a user buffer (passed in to the external 7757ACPI CA interfaces) could be overwritten if the buffer was too 7758small to complete the operation, causing memory corruption. 7759 7760Fixed a problem in the Buffer-to-String conversion code where a 7761string of length one was always returned, regardless of the size 7762of the input Buffer object. 7763 7764Removed the NATIVE_CHAR data type across the entire source due to 7765lack of need and lack of consistent use. 7766 7767Code and Data Size: Current core subsystem library sizes are shown 7768below. These are the code and data sizes for the acpica.lib 7769produced by the Microsoft Visual C++ 6.0 compiler, and these 7770values do not include any ACPI driver or OSPM code. The debug 7771version of the code includes the debug output trace mechanism and 7772has a much larger code and data size. Note that these values will 7773vary depending on the efficiency of the compiler and the compiler 7774options used during generation. 7775 7776 Previous Release 7777 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 7778 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 7779 Current Release: 7780 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 7781 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 7782 7783 7784---------------------------------------- 778505 December 2002. Summary of changes for version 20021205. 7786 77871) ACPI CA Core Subsystem: 7788 7789Fixed a problem where a store to a String or Buffer object could 7790cause corruption of the DSDT if the object type being stored was 7791the same as the target object type and the length of the object 7792being stored was equal to or smaller than the original (existing) 7793target object. This was seen to cause corruption of battery _BIF 7794buffers if the _BIF method modified the buffer on the fly. 7795 7796Fixed a problem where an internal error was generated if a control 7797method invocation was used in an OperationRegion, Buffer, or 7798Package declaration. This was caused by the deferred parsing of 7799the control method and thus the deferred creation of the internal 7800method object. The solution to this problem was to create the 7801internal method object at the moment the method is encountered in 7802the first pass - so that subsequent references to the method will 7803able to obtain the required parameter count and thus properly 7804parse the method invocation. This problem presented itself as an 7805AE_AML_INTERNAL during the pass 1 parse phase during table load. 7806 7807Fixed a problem where the internal String object copy routine did 7808not always allocate sufficient memory for the target String object 7809and caused memory corruption. This problem was seen to cause 7810"Allocation already present in list!" errors as memory allocation 7811became corrupted. 7812 7813Implemented a new function for the evaluation of namespace objects 7814that allows the specification of the allowable return object 7815types. This simplifies a lot of code that checks for a return 7816object of one or more specific objects returned from the 7817evaluation (such as _STA, etc.) This may become and external 7818function if it would be useful to ACPI-related drivers. 7819 7820Completed another round of prefixing #defines with "ACPI_" for 7821clarity. 7822 7823Completed additional code restructuring to allow more modular 7824linking for iASL compiler and AcpiExec. Several files were split 7825creating new files. New files: nsparse.c dsinit.c evgpe.c 7826 7827Implemented an abort mechanism to terminate an executing control 7828method via the AML debugger. This feature is useful for debugging 7829control methods that depend (wait) for specific hardware 7830responses. 7831 7832Code and Data Size: Current core subsystem library sizes are shown 7833below. These are the code and data sizes for the acpica.lib 7834produced by the Microsoft Visual C++ 6.0 compiler, and these 7835values do not include any ACPI driver or OSPM code. The debug 7836version of the code includes the debug output trace mechanism and 7837has a much larger code and data size. Note that these values will 7838vary depending on the efficiency of the compiler and the compiler 7839options used during generation. 7840 7841 Previous Release 7842 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 7843 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 7844 Current Release: 7845 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 7846 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 7847 7848 78492) iASL Compiler/Disassembler 7850 7851Fixed a compiler code generation problem for "Interrupt" Resource 7852Descriptors. If specified in the ASL, the optional "Resource 7853Source Index" and "Resource Source" fields were not inserted into 7854the correct location within the AML resource descriptor, creating 7855an invalid descriptor. 7856 7857Fixed a disassembler problem for "Interrupt" resource descriptors. 7858The optional "Resource Source Index" and "Resource Source" fields 7859were ignored. 7860 7861 7862---------------------------------------- 786322 November 2002. Summary of changes for version 20021122. 7864 7865 78661) ACPI CA Core Subsystem: 7867 7868Fixed a reported problem where an object stored to a Method Local 7869or Arg was not copied to a new object during the store - the 7870object pointer was simply copied to the Local/Arg. This caused 7871all subsequent operations on the Local/Arg to also affect the 7872original source of the store operation. 7873 7874Fixed a problem where a store operation to a Method Local or Arg 7875was not completed properly if the Local/Arg contained a reference 7876(from RefOf) to a named field. The general-purpose store-to- 7877namespace-node code is now used so that this case is handled 7878automatically. 7879 7880Fixed a problem where the internal object copy routine would cause 7881a protection fault if the object being copied was a Package and 7882contained either 1) a NULL package element or 2) a nested sub- 7883package. 7884 7885Fixed a problem with the GPE initialization that resulted from an 7886ambiguity in the ACPI specification. One section of the 7887specification states that both the address and length of the GPE 7888block must be zero if the block is not supported. Another section 7889implies that only the address need be zero if the block is not 7890supported. The code has been changed so that both the address and 7891the length must be non-zero to indicate a valid GPE block (i.e., 7892if either the address or the length is zero, the GPE block is 7893invalid.) 7894 7895Code and Data Size: Current core subsystem library sizes are shown 7896below. These are the code and data sizes for the acpica.lib 7897produced by the Microsoft Visual C++ 6.0 compiler, and these 7898values do not include any ACPI driver or OSPM code. The debug 7899version of the code includes the debug output trace mechanism and 7900has a much larger code and data size. Note that these values will 7901vary depending on the efficiency of the compiler and the compiler 7902options used during generation. 7903 7904 Previous Release 7905 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 7906 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 7907 Current Release: 7908 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 7909 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 7910 7911 79122) Linux 7913 7914Cleaned up EC driver. Exported an external EC read/write 7915interface. By going through this, other drivers (most notably 7916sonypi) will be able to serialize access to the EC. 7917 7918 79193) iASL Compiler/Disassembler 7920 7921Implemented support to optionally generate include files for both 7922ASM and C (the -i switch). This simplifies BIOS development by 7923automatically creating include files that contain external 7924declarations for the symbols that are created within the 7925 7926(optionally generated) ASM and C AML source files. 7927 7928 7929---------------------------------------- 793015 November 2002. Summary of changes for version 20021115. 7931 79321) ACPI CA Core Subsystem: 7933 7934Fixed a memory leak problem where an error during resolution of 7935 7936method arguments during a method invocation from another method 7937failed to cleanup properly by deleting all successfully resolved 7938argument objects. 7939 7940Fixed a problem where the target of the Index() operator was not 7941correctly constructed if the source object was a package. This 7942problem has not been detected because the use of a target operand 7943with Index() is very rare. 7944 7945Fixed a problem with the Index() operator where an attempt was 7946made to delete the operand objects twice. 7947 7948Fixed a problem where an attempt was made to delete an operand 7949twice during execution of the CondRefOf() operator if the target 7950did not exist. 7951 7952Implemented the first of perhaps several internal create object 7953functions that create and initialize a specific object type. This 7954consolidates duplicated code wherever the object is created, thus 7955shrinking the size of the subsystem. 7956 7957Implemented improved debug/error messages for errors that occur 7958during nested method invocations. All executing method pathnames 7959are displayed (with the error) as the call stack is unwound - thus 7960simplifying debug. 7961 7962Fixed a problem introduced in the 10/02 release that caused 7963premature deletion of a buffer object if a buffer was used as an 7964ASL operand where an integer operand is required (Thus causing an 7965implicit object conversion from Buffer to Integer.) The change in 7966the 10/02 release was attempting to fix a memory leak (albeit 7967incorrectly.) 7968 7969Code and Data Size: Current core subsystem library sizes are shown 7970below. These are the code and data sizes for the acpica.lib 7971produced by the Microsoft Visual C++ 6.0 compiler, and these 7972values do not include any ACPI driver or OSPM code. The debug 7973version of the code includes the debug output trace mechanism and 7974has a much larger code and data size. Note that these values will 7975vary depending on the efficiency of the compiler and the compiler 7976options used during generation. 7977 7978 Previous Release 7979 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 7980 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 7981 Current Release: 7982 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 7983 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 7984 7985 79862) Linux 7987 7988Changed the implementation of the ACPI semaphores to use down() 7989instead of down_interruptable(). It is important that the 7990execution of ACPI control methods not be interrupted by signals. 7991Methods must run to completion, or the system may be left in an 7992unknown/unstable state. 7993 7994Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set. 7995(Shawn Starr) 7996 7997 79983) iASL Compiler/Disassembler 7999 8000 8001Changed the default location of output files. All output files 8002are now placed in the current directory by default instead of in 8003the directory of the source file. This change may affect some 8004existing makefiles, but it brings the behavior of the compiler in 8005line with other similar tools. The location of the output files 8006can be overridden with the -p command line switch. 8007 8008 8009---------------------------------------- 801011 November 2002. Summary of changes for version 20021111. 8011 8012 80130) ACPI Specification 2.0B is released and is now available at: 8014http://www.acpi.info/index.html 8015 8016 80171) ACPI CA Core Subsystem: 8018 8019Implemented support for the ACPI 2.0 SMBus Operation Regions. 8020This includes the early detection and handoff of the request to 8021the SMBus region handler (avoiding all of the complex field 8022support code), and support for the bidirectional return packet 8023from an SMBus write operation. This paves the way for the 8024development of SMBus drivers in each host operating system. 8025 8026Fixed a problem where the semaphore WAIT_FOREVER constant was 8027defined as 32 bits, but must be 16 bits according to the ACPI 8028specification. This had the side effect of causing ASL 8029Mutex/Event timeouts even though the ASL code requested a wait 8030forever. Changed all internal references to the ACPI timeout 8031parameter to 16 bits to prevent future problems. Changed the name 8032of WAIT_FOREVER to ACPI_WAIT_FOREVER. 8033 8034Code and Data Size: Current core subsystem library sizes are shown 8035below. These are the code and data sizes for the acpica.lib 8036produced by the Microsoft Visual C++ 6.0 compiler, and these 8037values do not include any ACPI driver or OSPM code. The debug 8038version of the code includes the debug output trace mechanism and 8039has a much larger code and data size. Note that these values will 8040vary depending on the efficiency of the compiler and the compiler 8041options used during generation. 8042 8043 Previous Release 8044 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 8045 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 8046 Current Release: 8047 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 8048 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 8049 8050 80512) Linux 8052 8053Module loading/unloading fixes (John Cagle) 8054 8055 80563) iASL Compiler/Disassembler 8057 8058Added support for the SMBBlockProcessCall keyword (ACPI 2.0) 8059 8060Implemented support for the disassembly of all SMBus protocol 8061keywords (SMBQuick, SMBWord, etc.) 8062 8063---------------------------------------- 806401 November 2002. Summary of changes for version 20021101. 8065 8066 80671) ACPI CA Core Subsystem: 8068 8069Fixed a problem where platforms that have a GPE1 block but no GPE0 8070block were not handled correctly. This resulted in a "GPE 8071overlap" error message. GPE0 is no longer required. 8072 8073Removed code added in the previous release that inserted nodes 8074into the namespace in alphabetical order. This caused some side- 8075effects on various machines. The root cause of the problem is 8076still under investigation since in theory, the internal ordering 8077of the namespace nodes should not matter. 8078 8079 8080Enhanced error reporting for the case where a named object is not 8081found during control method execution. The full ACPI namepath 8082(name reference) of the object that was not found is displayed in 8083this case. 8084 8085Note: as a result of the overhaul of the namespace object types in 8086the previous release, the namespace nodes for the predefined 8087scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE 8088instead of ACPI_TYPE_ANY. This simplifies the namespace 8089management code but may affect code that walks the namespace tree 8090looking for specific object types. 8091 8092Code and Data Size: Current core subsystem library sizes are shown 8093below. These are the code and data sizes for the acpica.lib 8094produced by the Microsoft Visual C++ 6.0 compiler, and these 8095values do not include any ACPI driver or OSPM code. The debug 8096version of the code includes the debug output trace mechanism and 8097has a much larger code and data size. Note that these values will 8098vary depending on the efficiency of the compiler and the compiler 8099options used during generation. 8100 8101 Previous Release 8102 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 8103 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 8104 Current Release: 8105 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 8106 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 8107 8108 81092) Linux 8110 8111Fixed a problem introduced in the previous release where the 8112Processor and Thermal objects were not recognized and installed in 8113/proc. This was related to the scope type change described above. 8114 8115 81163) iASL Compiler/Disassembler 8117 8118Implemented the -g option to get all of the required ACPI tables 8119from the registry and save them to files (Windows version of the 8120compiler only.) The required tables are the FADT, FACS, and DSDT. 8121 8122Added ACPI table checksum validation during table disassembly in 8123order to catch corrupted tables. 8124 8125 8126---------------------------------------- 812722 October 2002. Summary of changes for version 20021022. 8128 81291) ACPI CA Core Subsystem: 8130 8131Implemented a restriction on the Scope operator that the target 8132must already exist in the namespace at the time the operator is 8133encountered (during table load or method execution). In other 8134words, forward references are not allowed and Scope() cannot 8135create a new object. This changes the previous behavior where the 8136interpreter would create the name if not found. This new behavior 8137correctly enables the search-to-root algorithm during namespace 8138lookup of the target name. Because of this upsearch, this fixes 8139the known Compaq _SB_.OKEC problem and makes both the AML 8140interpreter and iASL compiler compatible with other ACPI 8141implementations. 8142 8143Completed a major overhaul of the internal ACPI object types for 8144the ACPI Namespace and the associated operand objects. Many of 8145these types had become obsolete with the introduction of the two- 8146pass namespace load. This cleanup simplifies the code and makes 8147the entire namespace load mechanism much clearer and easier to 8148understand. 8149 8150Improved debug output for tracking scope opening/closing to help 8151diagnose scoping issues. The old scope name as well as the new 8152scope name are displayed. Also improved error messages for 8153problems with ASL Mutex objects and error messages for GPE 8154problems. 8155 8156Cleaned up the namespace dump code, removed obsolete code. 8157 8158All string output (for all namespace/object dumps) now uses the 8159common ACPI string output procedure which handles escapes properly 8160and does not emit non-printable characters. 8161 8162Fixed some issues with constants in the 64-bit version of the 8163local C library (utclib.c) 8164 8165 81662) Linux 8167 8168EC Driver: No longer attempts to acquire the Global Lock at 8169interrupt level. 8170 8171 81723) iASL Compiler/Disassembler 8173 8174Implemented ACPI 2.0B grammar change that disallows all Type 1 and 81752 opcodes outside of a control method. This means that the 8176"executable" operators (versus the "namespace" operators) cannot 8177be used at the table level; they can only be used within a control 8178method. 8179 8180Implemented the restriction on the Scope() operator where the 8181target must already exist in the namespace at the time the 8182operator is encountered (during ASL compilation). In other words, 8183forward references are not allowed and Scope() cannot create a new 8184object. This makes the iASL compiler compatible with other ACPI 8185implementations and makes the Scope() implementation adhere to the 8186ACPI specification. 8187 8188Fixed a problem where namepath optimization for the Alias operator 8189was optimizing the wrong path (of the two namepaths.) This caused 8190a "Missing alias link" error message. 8191 8192Fixed a problem where an "unknown reserved name" warning could be 8193incorrectly generated for names like "_SB" when the trailing 8194underscore is not used in the original ASL. 8195 8196Fixed a problem where the reserved name check did not handle 8197NamePaths with multiple NameSegs correctly. The first nameseg of 8198the NamePath was examined instead of the last NameSeg. 8199 8200 8201---------------------------------------- 8202 820302 October 2002. Summary of changes for this release. 8204 8205 82061) ACPI CA Core Subsystem version 20021002: 8207 8208Fixed a problem where a store/copy of a string to an existing 8209string did not always set the string length properly in the String 8210object. 8211 8212Fixed a reported problem with the ToString operator where the 8213behavior was identical to the ToHexString operator instead of just 8214simply converting a raw buffer to a string data type. 8215 8216Fixed a problem where CopyObject and the other "explicit" 8217conversion operators were not updating the internal namespace node 8218type as part of the store operation. 8219 8220Fixed a memory leak during implicit source operand conversion 8221where the original object was not deleted if it was converted to a 8222new object of a different type. 8223 8224Enhanced error messages for all problems associated with namespace 8225lookups. Common procedure generates and prints the lookup name as 8226well as the formatted status. 8227 8228Completed implementation of a new design for the Alias support 8229within the namespace. The existing design did not handle the case 8230where a new object was assigned to one of the two names due to the 8231use of an explicit conversion operator, resulting in the two names 8232pointing to two different objects. The new design simply points 8233the Alias name to the original name node - not to the object. 8234This results in a level of indirection that must be handled in the 8235name resolution mechanism. 8236 8237Code and Data Size: Current core subsystem library sizes are shown 8238below. These are the code and data sizes for the acpica.lib 8239produced by the Microsoft Visual C++ 6.0 compiler, and these 8240values do not include any ACPI driver or OSPM code. The debug 8241version of the code includes the debug output trace mechanism and 8242has a larger code and data size. Note that these values will vary 8243depending on the efficiency of the compiler and the compiler 8244options used during generation. 8245 8246 Previous Release 8247 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 8248 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 8249 Current Release: 8250 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 8251 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 8252 8253 82542) Linux 8255 8256Initialize thermal driver's timer before it is used. (Knut 8257Neumann) 8258 8259Allow handling negative celsius values. (Kochi Takayoshi) 8260 8261Fix thermal management and make trip points. R/W (Pavel Machek) 8262 8263Fix /proc/acpi/sleep. (P. Christeas) 8264 8265IA64 fixes. (David Mosberger) 8266 8267Fix reversed logic in blacklist code. (Sergio Monteiro Basto) 8268 8269Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik 8270Brodowski) 8271 8272 82733) iASL Compiler/Disassembler 8274 8275Clarified some warning/error messages. 8276 8277 8278---------------------------------------- 827918 September 2002. Summary of changes for this release. 8280 8281 82821) ACPI CA Core Subsystem version 20020918: 8283 8284Fixed a reported problem with reference chaining (via the Index() 8285and RefOf() operators) in the ObjectType() and SizeOf() operators. 8286The definition of these operators includes the dereferencing of 8287all chained references to return information on the base object. 8288 8289Fixed a problem with stores to indexed package elements - the 8290existing code would not complete the store if an "implicit 8291conversion" was not performed. In other words, if the existing 8292object (package element) was to be replaced completely, the code 8293didn't handle this case. 8294 8295Relaxed typechecking on the ASL "Scope" operator to allow the 8296target name to refer to an object of type Integer, String, or 8297Buffer, in addition to the scoping object types (Device, 8298predefined Scopes, Processor, PowerResource, and ThermalZone.) 8299This allows existing AML code that has workarounds for a bug in 8300Windows to function properly. A warning is issued, however. This 8301affects both the AML interpreter and the iASL compiler. Below is 8302an example of this type of ASL code: 8303 8304 Name(DEB,0x00) 8305 Scope(DEB) 8306 { 8307 8308Fixed some reported problems with 64-bit integer support in the 8309local implementation of C library functions (clib.c) 8310 8311 83122) Linux 8313 8314Use ACPI fix map region instead of IOAPIC region, since it is 8315undefined in non-SMP. 8316 8317Ensure that the SCI has the proper polarity and trigger, even on 8318systems that do not have an interrupt override entry in the MADT. 8319 83202.5 big driver reorganization (Pat Mochel) 8321 8322Use early table mapping code from acpitable.c (Andi Kleen) 8323 8324New blacklist entries (Andi Kleen) 8325 8326Blacklist improvements. Split blacklist code out into a separate 8327file. Move checking the blacklist to very early. Previously, we 8328would use ACPI tables, and then halfway through init, check the 8329blacklist -- too late. Now, it's early enough to completely fall- 8330back to non-ACPI. 8331 8332 83333) iASL Compiler/Disassembler version 20020918: 8334 8335Fixed a problem where the typechecking code didn't know that an 8336alias could point to a method. In other words, aliases were not 8337being dereferenced during typechecking. 8338 8339 8340---------------------------------------- 834129 August 2002. Summary of changes for this release. 8342 83431) ACPI CA Core Subsystem Version 20020829: 8344 8345If the target of a Scope() operator already exists, it must be an 8346object type that actually opens a scope -- such as a Device, 8347Method, Scope, etc. This is a fatal runtime error. Similar error 8348check has been added to the iASL compiler also. 8349 8350Tightened up the namespace load to disallow multiple names in the 8351same scope. This previously was allowed if both objects were of 8352the same type. (i.e., a lookup was the same as entering a new 8353name). 8354 8355 83562) Linux 8357 8358Ensure that the ACPI interrupt has the proper trigger and 8359polarity. 8360 8361local_irq_disable is extraneous. (Matthew Wilcox) 8362 8363Make "acpi=off" actually do what it says, and not use the ACPI 8364interpreter *or* the tables. 8365 8366Added arch-neutral support for parsing SLIT and SRAT tables (Kochi 8367Takayoshi) 8368 8369 83703) iASL Compiler/Disassembler Version 20020829: 8371 8372Implemented namepath optimization for name declarations. For 8373example, a declaration like "Method (\_SB_.ABCD)" would get 8374optimized to "Method (ABCD)" if the declaration is within the 8375\_SB_ scope. This optimization is in addition to the named 8376reference path optimization first released in the previous 8377version. This would seem to complete all possible optimizations 8378for namepaths within the ASL/AML. 8379 8380If the target of a Scope() operator already exists, it must be an 8381object type that actually opens a scope -- such as a Device, 8382Method, Scope, etc. 8383 8384Implemented a check and warning for unreachable code in the same 8385block below a Return() statement. 8386 8387Fixed a problem where the listing file was not generated if the 8388compiler aborted if the maximum error count was exceeded (200). 8389 8390Fixed a problem where the typechecking of method return values was 8391broken. This includes the check for a return value when the 8392method is invoked as a TermArg (a return value is expected.) 8393 8394Fixed a reported problem where EOF conditions during a quoted 8395string or comment caused a fault. 8396 8397 8398---------------------------------------- 839915 August 2002. Summary of changes for this release. 8400 84011) ACPI CA Core Subsystem Version 20020815: 8402 8403Fixed a reported problem where a Store to a method argument that 8404contains a reference did not perform the indirect store correctly. 8405This problem was created during the conversion to the new 8406reference object model - the indirect store to a method argument 8407code was not updated to reflect the new model. 8408 8409Reworked the ACPI mode change code to better conform to ACPI 2.0, 8410handle corner cases, and improve code legibility (Kochi Takayoshi) 8411 8412Fixed a problem with the pathname parsing for the carat (^) 8413prefix. The heavy use of the carat operator by the new namepath 8414optimization in the iASL compiler uncovered a problem with the AML 8415interpreter handling of this prefix. In the case where one or 8416more carats precede a single nameseg, the nameseg was treated as 8417standalone and the search rule (to root) was inadvertently 8418applied. This could cause both the iASL compiler and the 8419interpreter to find the wrong object or to miss the error that 8420should occur if the object does not exist at that exact pathname. 8421 8422Found and fixed the problem where the HP Pavilion DSDT would not 8423load. This was a relatively minor tweak to the table loading code 8424(a problem caused by the unexpected encounter with a method 8425invocation not within a control method), but it does not solve the 8426overall issue of the execution of AML code at the table level. 8427This investigation is still ongoing. 8428 8429Code and Data Size: Current core subsystem library sizes are shown 8430below. These are the code and data sizes for the acpica.lib 8431produced by the Microsoft Visual C++ 6.0 compiler, and these 8432values do not include any ACPI driver or OSPM code. The debug 8433version of the code includes the debug output trace mechanism and 8434has a larger code and data size. Note that these values will vary 8435depending on the efficiency of the compiler and the compiler 8436options used during generation. 8437 8438 Previous Release 8439 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 8440 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 8441 Current Release: 8442 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 8443 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 8444 8445 84462) Linux 8447 8448Remove redundant slab.h include (Brad Hards) 8449 8450Fix several bugs in thermal.c (Herbert Nachtnebel) 8451 8452Make CONFIG_ACPI_BOOT work properly (Pavel Machek) 8453 8454Change acpi_system_suspend to use updated irq functions (Pavel 8455Machek) 8456 8457Export acpi_get_firmware_table (Matthew Wilcox) 8458 8459Use proper root proc entry for ACPI (Kochi Takayoshi) 8460 8461Fix early-boot table parsing (Bjorn Helgaas) 8462 8463 84643) iASL Compiler/Disassembler 8465 8466Reworked the compiler options to make them more consistent and to 8467use two-letter options where appropriate. We were running out of 8468sensible letters. This may break some makefiles, so check the 8469current options list by invoking the compiler with no parameters. 8470 8471Completed the design and implementation of the ASL namepath 8472optimization option for the compiler. This option optimizes all 8473references to named objects to the shortest possible path. The 8474first attempt tries to utilize a single nameseg (4 characters) and 8475the "search-to-root" algorithm used by the interpreter. If that 8476cannot be used (because either the name is not in the search path 8477or there is a conflict with another object with the same name), 8478the pathname is optimized using the carat prefix (usually a 8479shorter string than specifying the entire path from the root.) 8480 8481Implemented support to obtain the DSDT from the Windows registry 8482(when the disassembly option is specified with no input file). 8483Added this code as the implementation for AcpiOsTableOverride in 8484the Windows OSL. Migrated the 16-bit code (used in the AcpiDump 8485utility) to scan memory for the DSDT to the AcpiOsTableOverride 8486function in the DOS OSL to make the disassembler truly OS 8487independent. 8488 8489Implemented a new option to disassemble and compile in one step. 8490When used without an input filename, this option will grab the 8491DSDT from the local machine, disassemble it, and compile it in one 8492step. 8493 8494Added a warning message for invalid escapes (a backslash followed 8495by any character other than the allowable escapes). This catches 8496the quoted string error "\_SB_" (which should be "\\_SB_" ). 8497 8498Also, there are numerous instances in the ACPI specification where 8499this error occurs. 8500 8501Added a compiler option to disable all optimizations. This is 8502basically the "compatibility mode" because by using this option, 8503the AML code will come out exactly the same as other ASL 8504compilers. 8505 8506Added error messages for incorrectly ordered dependent resource 8507functions. This includes: missing EndDependentFn macro at end of 8508dependent resource list, nested dependent function macros (both 8509start and end), and missing StartDependentFn macro. These are 8510common errors that should be caught at compile time. 8511 8512Implemented _OSI support for the disassembler and compiler. _OSI 8513must be included in the namespace for proper disassembly (because 8514the disassembler must know the number of arguments.) 8515 8516Added an "optimization" message type that is optional (off by 8517default). This message is used for all optimizations - including 8518constant folding, integer optimization, and namepath optimization. 8519 8520---------------------------------------- 852125 July 2002. Summary of changes for this release. 8522 8523 85241) ACPI CA Core Subsystem Version 20020725: 8525 8526The AML Disassembler has been enhanced to produce compilable ASL 8527code and has been integrated into the iASL compiler (see below) as 8528well as the single-step disassembly for the AML debugger and the 8529disassembler for the AcpiDump utility. All ACPI 2.0A opcodes, 8530resource templates and macros are fully supported. The 8531disassembler has been tested on over 30 different AML files, 8532producing identical AML when the resulting disassembled ASL file 8533is recompiled with the same ASL compiler. 8534 8535Modified the Resource Manager to allow zero interrupts and zero 8536dma channels during the GetCurrentResources call. This was 8537causing problems on some platforms. 8538 8539Added the AcpiOsRedirectOutput interface to the OSL to simplify 8540output redirection for the AcpiOsPrintf and AcpiOsVprintf 8541interfaces. 8542 8543Code and Data Size: Current core subsystem library sizes are shown 8544below. These are the code and data sizes for the acpica.lib 8545produced by the Microsoft Visual C++ 6.0 compiler, and these 8546values do not include any ACPI driver or OSPM code. The debug 8547version of the code includes the debug output trace mechanism and 8548has a larger code and data size. Note that these values will vary 8549depending on the efficiency of the compiler and the compiler 8550options used during generation. 8551 8552 Previous Release 8553 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 8554 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 8555 Current Release: 8556 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 8557 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 8558 8559 85602) Linux 8561 8562Fixed a panic in the EC driver (Dominik Brodowski) 8563 8564Implemented checksum of the R/XSDT itself during Linux table scan 8565(Richard Schaal) 8566 8567 85683) iASL compiler 8569 8570The AML disassembler is integrated into the compiler. The "-d" 8571option invokes the disassembler to completely disassemble an 8572input AML file, producing as output a text ASL file with the 8573extension ".dsl" (to avoid name collisions with existing .asl 8574source files.) A future enhancement will allow the disassembler 8575to obtain the BIOS DSDT from the registry under Windows. 8576 8577Fixed a problem with the VendorShort and VendorLong resource 8578descriptors where an invalid AML sequence was created. 8579 8580Implemented a fix for BufferData term in the ASL parser. It was 8581inadvertently defined twice, allowing invalid syntax to pass and 8582causing reduction conflicts. 8583 8584Fixed a problem where the Ones opcode could get converted to a 8585value of zero if "Ones" was used where a byte, word or dword value 8586was expected. The 64-bit value is now truncated to the correct 8587size with the correct value. 8588 8589 8590 8591---------------------------------------- 859202 July 2002. Summary of changes for this release. 8593 8594 85951) ACPI CA Core Subsystem Version 20020702: 8596 8597The Table Manager code has been restructured to add several new 8598features. Tables that are not required by the core subsystem 8599(other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer 8600validated in any way and are returned from AcpiGetFirmwareTable if 8601requested. The AcpiOsTableOverride interface is now called for 8602each table that is loaded by the subsystem in order to allow the 8603host to override any table it chooses. Previously, only the DSDT 8604could be overridden. Added one new files, tbrsdt.c and 8605tbgetall.c. 8606 8607Fixed a problem with the conversion of internal package objects to 8608external objects (when a package is returned from a control 8609method.) The return buffer length was set to zero instead of the 8610proper length of the package object. 8611 8612Fixed a reported problem with the use of the RefOf and DeRefOf 8613operators when passing reference arguments to control methods. A 8614new type of Reference object is used internally for references 8615produced by the RefOf operator. 8616 8617Added additional error messages in the Resource Manager to explain 8618AE_BAD_DATA errors when they occur during resource parsing. 8619 8620Split the AcpiEnableSubsystem into two primitives to enable a 8621finer granularity initialization sequence. These two calls should 8622be called in this order: AcpiEnableSubsystem (flags), 8623AcpiInitializeObjects (flags). The flags parameter remains the 8624same. 8625 8626 86272) Linux 8628 8629Updated the ACPI utilities module to understand the new style of 8630fully resolved package objects that are now returned from the core 8631subsystem. This eliminates errors of the form: 8632 8633 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT] 8634 acpi_utils-0430 [145] acpi_evaluate_reference: 8635 Invalid element in package (not a device reference) 8636 8637The method evaluation utility uses the new buffer allocation 8638scheme instead of calling AcpiEvaluate Object twice. 8639 8640Added support for ECDT. This allows the use of the Embedded 8641 8642Controller before the namespace has been fully initialized, which 8643is necessary for ACPI 2.0 support, and for some laptops to 8644initialize properly. (Laptops using ECDT are still rare, so only 8645limited testing was performed of the added functionality.) 8646 8647Fixed memory leaks in the EC driver. 8648 8649Eliminated a brittle code structure in acpi_bus_init(). 8650 8651Eliminated the acpi_evaluate() helper function in utils.c. It is 8652no longer needed since acpi_evaluate_object can optionally 8653allocate memory for the return object. 8654 8655Implemented fix for keyboard hang when getting battery readings on 8656some systems (Stephen White) 8657 8658PCI IRQ routing update (Dominik Brodowski) 8659 8660Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC 8661support 8662 8663---------------------------------------- 866411 June 2002. Summary of changes for this release. 8665 8666 86671) ACPI CA Core Subsystem Version 20020611: 8668 8669Fixed a reported problem where constants such as Zero and One 8670appearing within _PRT packages were not handled correctly within 8671the resource manager code. Originally reported against the ASL 8672compiler because the code generator now optimizes integers to 8673their minimal AML representation (i.e. AML constants if possible.) 8674The _PRT code now handles all AML constant opcodes correctly 8675(Zero, One, Ones, Revision). 8676 8677Fixed a problem with the Concatenate operator in the AML 8678interpreter where a buffer result object was incorrectly marked as 8679not fully evaluated, causing a run-time error of AE_AML_INTERNAL. 8680 8681All package sub-objects are now fully resolved before they are 8682returned from the external ACPI interfaces. This means that name 8683strings are resolved to object handles, and constant operators 8684(Zero, One, Ones, Revision) are resolved to Integers. 8685 8686Implemented immediate resolution of the AML Constant opcodes 8687(Zero, One, Ones, Revision) to Integer objects upon detection 8688within the AML stream. This has simplified and reduced the 8689generated code size of the subsystem by eliminating about 10 8690switch statements for these constants (which previously were 8691contained in Reference objects.) The complicating issues are that 8692the Zero opcode is used as a "placeholder" for unspecified 8693optional target operands and stores to constants are defined to be 8694no-ops. 8695 8696Code and Data Size: Current core subsystem library sizes are shown 8697below. These are the code and data sizes for the acpica.lib 8698produced by the Microsoft Visual C++ 6.0 compiler, and these 8699values do not include any ACPI driver or OSPM code. The debug 8700version of the code includes the debug output trace mechanism and 8701has a larger code and data size. Note that these values will vary 8702depending on the efficiency of the compiler and the compiler 8703options used during generation. 8704 8705 Previous Release 8706 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 8707 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 8708 Current Release: 8709 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 8710 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 8711 8712 87132) Linux 8714 8715 8716Added preliminary support for obtaining _TRA data for PCI root 8717bridges (Bjorn Helgaas). 8718 8719 87203) iASL Compiler Version X2046: 8721 8722Fixed a problem where the "_DDN" reserved name was defined to be a 8723control method with one argument. There are no arguments, and 8724_DDN does not have to be a control method. 8725 8726Fixed a problem with the Linux version of the compiler where the 8727source lines printed with error messages were the wrong lines. 8728This turned out to be the "LF versus CR/LF" difference between 8729Windows and Unix. This appears to be the longstanding issue 8730concerning listing output and error messages. 8731 8732Fixed a problem with the Linux version of compiler where opcode 8733names within error messages were wrong. This was caused by a 8734slight difference in the output of the Flex tool on Linux versus 8735Windows. 8736 8737Fixed a problem with the Linux compiler where the hex output files 8738contained some garbage data caused by an internal buffer overrun. 8739 8740 8741---------------------------------------- 874217 May 2002. Summary of changes for this release. 8743 8744 87451) ACPI CA Core Subsystem Version 20020517: 8746 8747Implemented a workaround to an BIOS bug discovered on the HP 8748OmniBook where the FADT revision number and the table size are 8749inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new 8750behavior is to fallback to using only the ACPI 1.0 fields of the 8751FADT if the table is too small to be a ACPI 2.0 table as claimed 8752by the revision number. Although this is a BIOS bug, this is a 8753case where the workaround is simple enough and with no side 8754effects, so it seemed prudent to add it. A warning message is 8755issued, however. 8756 8757Implemented minimum size checks for the fixed-length ACPI tables - 8758- the FADT and FACS, as well as consistency checks between the 8759revision number and the table size. 8760 8761Fixed a reported problem in the table override support where the 8762new table pointer was incorrectly treated as a physical address 8763instead of a logical address. 8764 8765Eliminated the use of the AE_AML_ERROR exception and replaced it 8766with more descriptive codes. 8767 8768Fixed a problem where an exception would occur if an ASL Field was 8769defined with no named Field Units underneath it (used by some 8770index fields). 8771 8772Code and Data Size: Current core subsystem library sizes are shown 8773below. These are the code and data sizes for the acpica.lib 8774produced by the Microsoft Visual C++ 6.0 compiler, and these 8775values do not include any ACPI driver or OSPM code. The debug 8776version of the code includes the debug output trace mechanism and 8777has a larger code and data size. Note that these values will vary 8778depending on the efficiency of the compiler and the compiler 8779options used during generation. 8780 8781 Previous Release 8782 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 8783 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 8784 Current Release: 8785 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 8786 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 8787 8788 8789 87902) Linux 8791 8792Much work done on ACPI init (MADT and PCI IRQ routing support). 8793(Paul D. and Dominik Brodowski) 8794 8795Fix PCI IRQ-related panic on boot (Sam Revitch) 8796 8797Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno) 8798 8799Fix "MHz" typo (Dominik Brodowski) 8800 8801Fix RTC year 2000 issue (Dominik Brodowski) 8802 8803Preclude multiple button proc entries (Eric Brunet) 8804 8805Moved arch-specific code out of include/platform/aclinux.h 8806 88073) iASL Compiler Version X2044: 8808 8809Implemented error checking for the string used in the EISAID macro 8810(Usually used in the definition of the _HID object.) The code now 8811strictly enforces the PnP format - exactly 7 characters, 3 8812uppercase letters and 4 hex digits. 8813 8814If a raw string is used in the definition of the _HID object 8815(instead of the EISAID macro), the string must contain all 8816alphanumeric characters (e.g., "*PNP0011" is not allowed because 8817of the asterisk.) 8818 8819Implemented checking for invalid use of ACPI reserved names for 8820most of the name creation operators (Name, Device, Event, Mutex, 8821OperationRegion, PowerResource, Processor, and ThermalZone.) 8822Previously, this check was only performed for control methods. 8823 8824Implemented an additional check on the Name operator to emit an 8825error if a reserved name that must be implemented in ASL as a 8826control method is used. We know that a reserved name must be a 8827method if it is defined with input arguments. 8828 8829The warning emitted when a namespace object reference is not found 8830during the cross reference phase has been changed into an error. 8831The "External" directive should be used for names defined in other 8832modules. 8833 8834 88354) Tools and Utilities 8836 8837The 16-bit tools (adump16 and aexec16) have been regenerated and 8838tested. 8839 8840Fixed a problem with the output of both acpidump and adump16 where 8841the indentation of closing parentheses and brackets was not 8842 8843aligned properly with the parent block. 8844 8845 8846---------------------------------------- 884703 May 2002. Summary of changes for this release. 8848 8849 88501) ACPI CA Core Subsystem Version 20020503: 8851 8852Added support a new OSL interface that allows the host operating 8853 8854system software to override the DSDT found in the firmware - 8855AcpiOsTableOverride. With this interface, the OSL can examine the 8856version of the firmware DSDT and replace it with a different one 8857if desired. 8858 8859Added new external interfaces for accessing ACPI registers from 8860device drivers and other system software - AcpiGetRegister and 8861AcpiSetRegister. This was simply an externalization of the 8862existing AcpiHwBitRegister interfaces. 8863 8864Fixed a regression introduced in the previous build where the 8865ASL/AML CreateField operator always returned an error, 8866"destination must be a NS Node". 8867 8868Extended the maximum time (before failure) to successfully enable 8869ACPI mode to 3 seconds. 8870 8871Code and Data Size: Current core subsystem library sizes are shown 8872below. These are the code and data sizes for the acpica.lib 8873produced by the Microsoft Visual C++ 6.0 compiler, and these 8874values do not include any ACPI driver or OSPM code. The debug 8875version of the code includes the debug output trace mechanism and 8876has a larger code and data size. Note that these values will vary 8877depending on the efficiency of the compiler and the compiler 8878options used during generation. 8879 8880 Previous Release 8881 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 8882 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 8883 Current Release: 8884 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 8885 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 8886 8887 88882) Linux 8889 8890Enhanced ACPI init code for SMP. We are now fully MPS and $PIR- 8891free. While 3 out of 4 of our in-house systems work fine, the last 8892one still hangs when testing the LAPIC timer. 8893 8894Renamed many files in 2.5 kernel release to omit "acpi_" from the 8895name. 8896 8897Added warning on boot for Presario 711FR. 8898 8899Sleep improvements (Pavel Machek) 8900 8901ACPI can now be built without CONFIG_PCI enabled. 8902 8903IA64: Fixed memory map functions (JI Lee) 8904 8905 89063) iASL Compiler Version X2043: 8907 8908Added support to allow the compiler to be integrated into the MS 8909VC++ development environment for one-button compilation of single 8910files or entire projects -- with error-to-source-line mapping. 8911 8912Implemented support for compile-time constant folding for the 8913Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0 8914specification. This allows the ASL writer to use expressions 8915instead of Integer/Buffer/String constants in terms that must 8916evaluate to constants at compile time and will also simplify the 8917emitted AML in any such sub-expressions that can be folded 8918(evaluated at compile-time.) This increases the size of the 8919compiler significantly because a portion of the ACPI CA AML 8920interpreter is included within the compiler in order to pre- 8921evaluate constant expressions. 8922 8923 8924Fixed a problem with the "Unicode" ASL macro that caused the 8925compiler to fault. (This macro is used in conjunction with the 8926_STR reserved name.) 8927 8928Implemented an AML opcode optimization to use the Zero, One, and 8929Ones opcodes where possible to further reduce the size of integer 8930constants and thus reduce the overall size of the generated AML 8931code. 8932 8933Implemented error checking for new reserved terms for ACPI version 89342.0A. 8935 8936Implemented the -qr option to display the current list of ACPI 8937reserved names known to the compiler. 8938 8939Implemented the -qc option to display the current list of ASL 8940operators that are allowed within constant expressions and can 8941therefore be folded at compile time if the operands are constants. 8942 8943 89444) Documentation 8945 8946Updated the Programmer's Reference for new interfaces, data types, 8947and memory allocation model options. 8948 8949Updated the iASL Compiler User Reference to apply new format and 8950add information about new features and options. 8951 8952---------------------------------------- 895319 April 2002. Summary of changes for this release. 8954 89551) ACPI CA Core Subsystem Version 20020419: 8956 8957The source code base for the Core Subsystem has been completely 8958cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit 8959versions. The Lint option files used are included in the 8960/acpi/generate/lint directory. 8961 8962Implemented enhanced status/error checking across the entire 8963Hardware manager subsystem. Any hardware errors (reported from 8964the OSL) are now bubbled up and will abort a running control 8965method. 8966 8967 8968Fixed a problem where the per-ACPI-table integer width (32 or 64) 8969was stored only with control method nodes, causing a fault when 8970non-control method code was executed during table loading. The 8971solution implemented uses a global variable to indicate table 8972width across the entire ACPI subsystem. Therefore, ACPI CA does 8973not support mixed integer widths across different ACPI tables 8974(DSDT, SSDT). 8975 8976Fixed a problem where NULL extended fields (X fields) in an ACPI 89772.0 ACPI FADT caused the table load to fail. Although the 8978existing ACPI specification is a bit fuzzy on this topic, the new 8979behavior is to fall back on a ACPI 1.0 field if the corresponding 8980ACPI 2.0 X field is zero (even though the table revision indicates 8981a full ACPI 2.0 table.) The ACPI specification will be updated to 8982clarify this issue. 8983 8984Fixed a problem with the SystemMemory operation region handler 8985where memory was always accessed byte-wise even if the AML- 8986specified access width was larger than a byte. This caused 8987problems on systems with memory-mapped I/O. Memory is now 8988accessed with the width specified. On systems that do not support 8989non-aligned transfers, a check is made to guarantee proper address 8990alignment before proceeding in order to avoid an AML-caused 8991alignment fault within the kernel. 8992 8993 8994Fixed a problem with the ExtendedIrq resource where only one byte 8995of the 4-byte Irq field was extracted. 8996 8997Fixed the AcpiExDigitsNeeded() procedure to support _UID. This 8998function was out of date and required a rewrite. 8999 9000Code and Data Size: Current core subsystem library sizes are shown 9001below. These are the code and data sizes for the acpica.lib 9002produced by the Microsoft Visual C++ 6.0 compiler, and these 9003values do not include any ACPI driver or OSPM code. The debug 9004version of the code includes the debug output trace mechanism and 9005has a larger code and data size. Note that these values will vary 9006depending on the efficiency of the compiler and the compiler 9007options used during generation. 9008 9009 Previous Release 9010 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 9011 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 9012 Current Release: 9013 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 9014 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 9015 9016 90172) Linux 9018 9019PCI IRQ routing fixes (Dominik Brodowski) 9020 9021 90223) iASL Compiler Version X2042: 9023 9024Implemented an additional compile-time error check for a field 9025unit whose size + minimum access width would cause a run-time 9026access beyond the end-of-region. Previously, only the field size 9027itself was checked. 9028 9029The Core subsystem and iASL compiler now share a common parse 9030object in preparation for compile-time evaluation of the type 90313/4/5 ASL operators. 9032 9033 9034---------------------------------------- 9035Summary of changes for this release: 03_29_02 9036 90371) ACPI CA Core Subsystem Version 20020329: 9038 9039Implemented support for late evaluation of TermArg operands to 9040Buffer and Package objects. This allows complex expressions to be 9041used in the declarations of these object types. 9042 9043Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI 90441.0, if the field was larger than 32 bits, it was returned as a 9045buffer - otherwise it was returned as an integer. In ACPI 2.0, 9046the field is returned as a buffer only if the field is larger than 904764 bits. The TableRevision is now considered when making this 9048conversion to avoid incompatibility with existing ASL code. 9049 9050Implemented logical addressing for AcpiOsGetRootPointer. This 9051allows an RSDP with either a logical or physical address. With 9052this support, the host OS can now override all ACPI tables with 9053one logical RSDP. Includes implementation of "typed" pointer 9054support to allow a common data type for both physical and logical 9055pointers internally. This required a change to the 9056AcpiOsGetRootPointer interface. 9057 9058Implemented the use of ACPI 2.0 Generic Address Structures for all 9059GPE, Fixed Event, and PM Timer I/O. This allows the use of memory 9060mapped I/O for these ACPI features. 9061 9062Initialization now ignores not only non-required tables (All 9063tables other than the FADT, FACS, DSDT, and SSDTs), but also does 9064not validate the table headers of unrecognized tables. 9065 9066Fixed a problem where a notify handler could only be 9067installed/removed on an object of type Device. All "notify" 9068 9069objects are now supported -- Devices, Processor, Power, and 9070Thermal. 9071 9072Removed most verbosity from the ACPI_DB_INFO debug level. Only 9073critical information is returned when this debug level is enabled. 9074 9075Code and Data Size: Current core subsystem library sizes are shown 9076below. These are the code and data sizes for the acpica.lib 9077produced by the Microsoft Visual C++ 6.0 compiler, and these 9078values do not include any ACPI driver or OSPM code. The debug 9079version of the code includes the debug output trace mechanism and 9080has a larger code and data size. Note that these values will vary 9081depending on the efficiency of the compiler and the compiler 9082options used during generation. 9083 9084 Previous Release 9085 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 9086 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 9087 Current Release: 9088 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 9089 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 9090 9091 90922) Linux: 9093 9094The processor driver (acpi_processor.c) now fully supports ACPI 90952.0-based processor performance control (e.g. Intel(R) 9096SpeedStep(TM) technology) Note that older laptops that only have 9097the Intel "applet" interface are not supported through this. The 9098'limit' and 'performance' interface (/proc) are fully functional. 9099[Note that basic policy for controlling performance state 9100transitions will be included in the next version of ospmd.] The 9101idle handler was modified to more aggressively use C2, and PIIX4 9102errata handling underwent a complete overhaul (big thanks to 9103Dominik Brodowski). 9104 9105Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR- 9106based devices in the ACPI namespace are now dynamically bound 9107(associated) with their PCI counterparts (e.g. PCI1->01:00.0). 9108This allows, among other things, ACPI to resolve bus numbers for 9109subordinate PCI bridges. 9110 9111Enhanced PCI IRQ routing to get the proper bus number for _PRT 9112entries defined underneath PCI bridges. 9113 9114Added IBM 600E to bad bios list due to invalid _ADR value for 9115PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing. 9116 9117In the process of adding full MADT support (e.g. IOAPIC) for IA32 9118(acpi.c, mpparse.c) -- stay tuned. 9119 9120Added back visual differentiation between fixed-feature and 9121control-method buttons in dmesg. Buttons are also subtyped (e.g. 9122button/power/PWRF) to simplify button identification. 9123 9124We no longer use -Wno-unused when compiling debug. Please ignore 9125any "_THIS_MODULE defined but not used" messages. 9126 9127Can now shut down the system using "magic sysrq" key. 9128 9129 91303) iASL Compiler version 2041: 9131 9132Fixed a problem where conversion errors for hex/octal/decimal 9133constants were not reported. 9134 9135Implemented a fix for the General Register template Address field. 9136This field was 8 bits when it should be 64. 9137 9138Fixed a problem where errors/warnings were no longer being emitted 9139within the listing output file. 9140 9141Implemented the ACPI 2.0A restriction on ACPI Table Signatures to 9142exactly 4 characters, alphanumeric only. 9143 9144 9145 9146 9147---------------------------------------- 9148Summary of changes for this release: 03_08_02 9149 9150 91511) ACPI CA Core Subsystem Version 20020308: 9152 9153Fixed a problem with AML Fields where the use of the "AccessAny" 9154keyword could cause an interpreter error due to attempting to read 9155or write beyond the end of the parent Operation Region. 9156 9157Fixed a problem in the SystemMemory Operation Region handler where 9158an attempt was made to map memory beyond the end of the region. 9159This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY" 9160errors on some Linux systems. 9161 9162Fixed a problem where the interpreter/namespace "search to root" 9163algorithm was not functioning for some object types. Relaxed the 9164internal restriction on the search to allow upsearches for all 9165external object types as well as most internal types. 9166 9167 91682) Linux: 9169 9170We now use safe_halt() macro versus individual calls to sti | hlt. 9171 9172Writing to the processor limit interface should now work. "echo 1" 9173will increase the limit, 2 will decrease, and 0 will reset to the 9174 9175default. 9176 9177 91783) ASL compiler: 9179 9180Fixed segfault on Linux version. 9181 9182 9183---------------------------------------- 9184Summary of changes for this release: 02_25_02 9185 91861) ACPI CA Core Subsystem: 9187 9188 9189Fixed a problem where the GPE bit masks were not initialized 9190properly, causing erratic GPE behavior. 9191 9192Implemented limited support for multiple calling conventions. The 9193code can be generated with either the VPL (variable parameter 9194list, or "C") convention, or the FPL (fixed parameter list, or 9195"Pascal") convention. The core subsystem is about 3.4% smaller 9196when generated with FPL. 9197 9198 91992) Linux 9200 9201Re-add some /proc/acpi/event functionality that was lost during 9202the rewrite 9203 9204Resolved issue with /proc events for fixed-feature buttons showing 9205up as the system device. 9206 9207Fixed checks on C2/C3 latencies to be inclusive of maximum values. 9208 9209Replaced AE_ERRORs in acpi_osl.c with more specific error codes. 9210 9211Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi" 9212 9213Fixed limit interface & usage to fix bugs with passive cooling 9214hysterisis. 9215 9216Restructured PRT support. 9217 9218 9219---------------------------------------- 9220Summary of changes for this label: 02_14_02 9221 9222 92231) ACPI CA Core Subsystem: 9224 9225Implemented support in AcpiLoadTable to allow loading of FACS and 9226FADT tables. 9227 9228Suport for the now-obsolete interim 0.71 64-bit ACPI tables has 9229been removed. All 64-bit platforms should be migrated to the ACPI 92302.0 tables. The actbl71.h header has been removed from the source 9231tree. 9232 9233All C macros defined within the subsystem have been prefixed with 9234"ACPI_" to avoid collision with other system include files. 9235 9236Removed the return value for the two AcpiOsPrint interfaces, since 9237it is never used and causes lint warnings for ignoring the return 9238value. 9239 9240Added error checking to all internal mutex acquire and release 9241calls. Although a failure from one of these interfaces is 9242probably a fatal system error, these checks will cause the 9243immediate abort of the currently executing method or interface. 9244 9245Fixed a problem where the AcpiSetCurrentResources interface could 9246fault. This was a side effect of the deployment of the new memory 9247allocation model. 9248 9249Fixed a couple of problems with the Global Lock support introduced 9250in the last major build. The "common" (1.0/2.0) internal FACS was 9251being overwritten with the FACS signature and clobbering the 9252Global Lock pointer. Also, the actual firmware FACS was being 9253unmapped after construction of the "common" FACS, preventing 9254access to the actual Global Lock field within it. The "common" 9255internal FACS is no longer installed as an actual ACPI table; it 9256is used simply as a global. 9257 9258Code and Data Size: Current core subsystem library sizes are shown 9259below. These are the code and data sizes for the acpica.lib 9260produced by the Microsoft Visual C++ 6.0 compiler, and these 9261values do not include any ACPI driver or OSPM code. The debug 9262version of the code includes the debug output trace mechanism and 9263has a larger code and data size. Note that these values will vary 9264depending on the efficiency of the compiler and the compiler 9265options used during generation. 9266 9267 Previous Release (02_07_01) 9268 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 9269 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 9270 Current Release: 9271 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 9272 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 9273 9274 92752) Linux 9276 9277Updated Linux-specific code for core macro and OSL interface 9278changes described above. 9279 9280Improved /proc/acpi/event. It now can be opened only once and has 9281proper poll functionality. 9282 9283Fixed and restructured power management (acpi_bus). 9284 9285Only create /proc "view by type" when devices of that class exist. 9286 9287Fixed "charging/discharging" bug (and others) in acpi_battery. 9288 9289Improved thermal zone code. 9290 9291 92923) ASL Compiler, version X2039: 9293 9294 9295Implemented the new compiler restriction on ASL String hex/octal 9296escapes to non-null, ASCII values. An error results if an invalid 9297value is used. (This will require an ACPI 2.0 specification 9298change.) 9299 9300AML object labels that are output to the optional C and ASM source 9301are now prefixed with both the ACPI table signature and table ID 9302to help guarantee uniqueness within a large BIOS project. 9303 9304 9305---------------------------------------- 9306Summary of changes for this label: 02_01_02 9307 93081) ACPI CA Core Subsystem: 9309 9310ACPI 2.0 support is complete in the entire Core Subsystem and the 9311ASL compiler. All new ACPI 2.0 operators are implemented and all 9312other changes for ACPI 2.0 support are complete. With 9313simultaneous code and data optimizations throughout the subsystem, 9314ACPI 2.0 support has been implemented with almost no additional 9315cost in terms of code and data size. 9316 9317Implemented a new mechanism for allocation of return buffers. If 9318the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will 9319be allocated on behalf of the caller. Consolidated all return 9320buffer validation and allocation to a common procedure. Return 9321buffers will be allocated via the primary OSL allocation interface 9322since it appears that a separate pool is not needed by most users. 9323If a separate pool is required for these buffers, the caller can 9324still use the original mechanism and pre-allocate the buffer(s). 9325 9326Implemented support for string operands within the DerefOf 9327operator. 9328 9329Restructured the Hardware and Event managers to be table driven, 9330simplifying the source code and reducing the amount of generated 9331code. 9332 9333Split the common read/write low-level ACPI register bitfield 9334procedure into a separate read and write, simplifying the code 9335considerably. 9336 9337Obsoleted the AcpiOsCallocate OSL interface. This interface was 9338used only a handful of times and didn't have enough critical mass 9339for a separate interface. Replaced with a common calloc procedure 9340in the core. 9341 9342Fixed a reported problem with the GPE number mapping mechanism 9343that allows GPE1 numbers to be non-contiguous with GPE0. 9344Reorganized the GPE information and shrunk a large array that was 9345originally large enough to hold info for all possible GPEs (256) 9346to simply large enough to hold all GPEs up to the largest GPE 9347number on the machine. 9348 9349Fixed a reported problem with resource structure alignment on 64- 9350bit platforms. 9351 9352Changed the AcpiEnableEvent and AcpiDisableEvent external 9353interfaces to not require any flags for the common case of 9354enabling/disabling a GPE. 9355 9356Implemented support to allow a "Notify" on a Processor object. 9357 9358Most TBDs in comments within the source code have been resolved 9359and eliminated. 9360 9361 9362Fixed a problem in the interpreter where a standalone parent 9363prefix (^) was not handled correctly in the interpreter and 9364debugger. 9365 9366Removed obsolete and unnecessary GPE save/restore code. 9367 9368Implemented Field support in the ASL Load operator. This allows a 9369table to be loaded from a named field, in addition to loading a 9370table directly from an Operation Region. 9371 9372Implemented timeout and handle support in the external Global Lock 9373interfaces. 9374 9375Fixed a problem in the AcpiDump utility where pathnames were no 9376longer being generated correctly during the dump of named objects. 9377 9378Modified the AML debugger to give a full display of if/while 9379predicates instead of just one AML opcode at a time. (The 9380predicate can have several nested ASL statements.) The old method 9381was confusing during single stepping. 9382 9383Code and Data Size: Current core subsystem library sizes are shown 9384below. These are the code and data sizes for the acpica.lib 9385produced by the Microsoft Visual C++ 6.0 compiler, and these 9386values do not include any ACPI driver or OSPM code. The debug 9387version of the code includes the debug output trace mechanism and 9388has a larger code and data size. Note that these values will vary 9389depending on the efficiency of the compiler and the compiler 9390options used during generation. 9391 9392 Previous Release (12_18_01) 9393 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 9394 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 9395 Current Release: 9396 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 9397 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 9398 93992) Linux 9400 9401 Implemented fix for PIIX reverse throttling errata (Processor 9402driver) 9403 9404Added new Limit interface (Processor and Thermal drivers) 9405 9406New thermal policy (Thermal driver) 9407 9408Many updates to /proc 9409 9410Battery "low" event support (Battery driver) 9411 9412Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers) 9413 9414IA32 - IA64 initialization unification, no longer experimental 9415 9416Menuconfig options redesigned 9417 94183) ASL Compiler, version X2037: 9419 9420Implemented several new output features to simplify integration of 9421AML code into firmware: 1) Output the AML in C source code with 9422labels for each named ASL object. The original ASL source code 9423is interleaved as C comments. 2) Output the AML in ASM source code 9424with labels and interleaved ASL source. 3) Output the AML in 9425raw hex table form, in either C or ASM. 9426 9427Implemented support for optional string parameters to the 9428LoadTable operator. 9429 9430Completed support for embedded escape sequences within string 9431literals. The compiler now supports all single character escapes 9432as well as the Octal and Hex escapes. Note: the insertion of a 9433null byte into a string literal (via the hex/octal escape) causes 9434the string to be immediately terminated. A warning is issued. 9435 9436Fixed a problem where incorrect AML was generated for the case 9437where an ASL namepath consists of a single parent prefix ( 9438 9439) with no trailing name segments. 9440 9441The compiler has been successfully generated with a 64-bit C 9442compiler. 9443 9444 9445 9446 9447---------------------------------------- 9448Summary of changes for this label: 12_18_01 9449 94501) Linux 9451 9452Enhanced blacklist with reason and severity fields. Any table's 9453signature may now be used to identify a blacklisted system. 9454 9455Call _PIC control method to inform the firmware which interrupt 9456model the OS is using. Turn on any disabled link devices. 9457 9458Cleaned up busmgr /proc error handling (Andreas Dilger) 9459 9460 2) ACPI CA Core Subsystem: 9461 9462Implemented ACPI 2.0 semantics for the "Break" operator (Exit from 9463while loop) 9464 9465Completed implementation of the ACPI 2.0 "Continue", 9466"ConcatenateResTemplate", "DataTableRegion", and "LoadTable" 9467operators. All new ACPI 2.0 operators are now implemented in both 9468the ASL compiler and the AML interpreter. The only remaining ACPI 94692.0 task is support for the String data type in the DerefOf 9470operator. Fixed a problem with AcquireMutex where the status code 9471was lost if the caller had to actually wait for the mutex. 9472 9473Increased the maximum ASL Field size from 64K bits to 4G bits. 9474 9475Completed implementation of the external Global Lock interfaces -- 9476AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and 9477Handler parameters were added. 9478 9479Completed another pass at removing warnings and issues when 9480compiling with 64-bit compilers. The code now compiles cleanly 9481with the Intel 64-bit C/C++ compiler. Most notably, the pointer 9482add and subtract (diff) macros have changed considerably. 9483 9484 9485Created and deployed a new ACPI_SIZE type that is 64-bits wide on 948664-bit platforms, 32-bits on all others. This type is used 9487wherever memory allocation and/or the C sizeof() operator is used, 9488and affects the OSL memory allocation interfaces AcpiOsAllocate 9489and AcpiOsCallocate. 9490 9491Implemented sticky user breakpoints in the AML debugger. 9492 9493Code and Data Size: Current core subsystem library sizes are shown 9494below. These are the code and data sizes for the acpica.lib 9495produced by the Microsoft Visual C++ 6.0 compiler, and these 9496values do not include any ACPI driver or OSPM code. The debug 9497version of the code includes the debug output trace mechanism and 9498has a larger code and data size. Note that these values will vary 9499depending on the efficiency of the compiler and the compiler 9500options used during generation. 9501 9502 Previous Release (12_05_01) 9503 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 9504 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 9505 Current Release: 9506 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 9507 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 9508 9509 3) ASL Compiler, version X2034: 9510 9511Now checks for (and generates an error if detected) the use of a 9512Break or Continue statement without an enclosing While statement. 9513 9514 9515Successfully generated the compiler with the Intel 64-bit C 9516compiler. 9517 9518 ---------------------------------------- 9519Summary of changes for this label: 12_05_01 9520 9521 1) ACPI CA Core Subsystem: 9522 9523The ACPI 2.0 CopyObject operator is fully implemented. This 9524operator creates a new copy of an object (and is also used to 9525bypass the "implicit conversion" mechanism of the Store operator.) 9526 9527The ACPI 2.0 semantics for the SizeOf operator are fully 9528implemented. The change is that performing a SizeOf on a 9529reference object causes an automatic dereference of the object to 9530tha actual value before the size is evaluated. This behavior was 9531undefined in ACPI 1.0. 9532 9533The ACPI 2.0 semantics for the Extended IRQ resource descriptor 9534have been implemented. The interrupt polarity and mode are now 9535independently set. 9536 9537Fixed a problem where ASL Constants (Zero, One, Ones, Revision) 9538appearing in Package objects were not properly converted to 9539integers when the internal Package was converted to an external 9540object (via the AcpiEvaluateObject interface.) 9541 9542Fixed a problem with the namespace object deletion mechanism for 9543objects created by control methods. There were two parts to this 9544problem: 1) Objects created during the initialization phase method 9545parse were not being deleted, and 2) The object owner ID mechanism 9546to track objects was broken. 9547 9548Fixed a problem where the use of the ASL Scope operator within a 9549control method would result in an invalid opcode exception. 9550 9551Fixed a problem introduced in the previous label where the buffer 9552length required for the _PRT structure was not being returned 9553correctly. 9554 9555Code and Data Size: Current core subsystem library sizes are shown 9556below. These are the code and data sizes for the acpica.lib 9557produced by the Microsoft Visual C++ 6.0 compiler, and these 9558values do not include any ACPI driver or OSPM code. The debug 9559version of the code includes the debug output trace mechanism and 9560has a larger code and data size. Note that these values will vary 9561depending on the efficiency of the compiler and the compiler 9562options used during generation. 9563 9564 Previous Release (11_20_01) 9565 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 9566 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 9567 9568 Current Release: 9569 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 9570 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 9571 9572 2) Linux: 9573 9574Updated all files to apply cleanly against 2.4.16. 9575 9576Added basic PCI Interrupt Routing Table (PRT) support for IA32 9577(acpi_pci.c), and unified the PRT code for IA32 and IA64. This 9578version supports both static and dyanmic PRT entries, but dynamic 9579entries are treated as if they were static (not yet 9580reconfigurable). Architecture- specific code to use this data is 9581absent on IA32 but should be available shortly. 9582 9583Changed the initialization sequence to start the ACPI interpreter 9584(acpi_init) prior to initialization of the PCI driver (pci_init) 9585in init/main.c. This ordering is required to support PRT and 9586facilitate other (future) enhancement. A side effect is that the 9587ACPI bus driver and certain device drivers can no longer be loaded 9588as modules. 9589 9590Modified the 'make menuconfig' options to allow PCI Interrupt 9591Routing support to be included without the ACPI Bus and other 9592device drivers. 9593 9594 3) ASL Compiler, version X2033: 9595 9596Fixed some issues with the use of the new CopyObject and 9597DataTableRegion operators. Both are fully functional. 9598 9599 ---------------------------------------- 9600Summary of changes for this label: 11_20_01 9601 9602 20 November 2001. Summary of changes for this release. 9603 9604 1) ACPI CA Core Subsystem: 9605 9606Updated Index support to match ACPI 2.0 semantics. Storing a 9607Integer, String, or Buffer to an Index of a Buffer will store only 9608the least-significant byte of the source to the Indexed buffer 9609byte. Multiple writes are not performed. 9610 9611Fixed a problem where the access type used in an AccessAs ASL 9612operator was not recorded correctly into the field object. 9613 9614Fixed a problem where ASL Event objects were created in a 9615signalled state. Events are now created in an unsignalled state. 9616 9617The internal object cache is now purged after table loading and 9618initialization to reduce the use of dynamic kernel memory -- on 9619the assumption that object use is greatest during the parse phase 9620of the entire table (versus the run-time use of individual control 9621methods.) 9622 9623ACPI 2.0 variable-length packages are now fully operational. 9624 9625Code and Data Size: Code and Data optimizations have permitted new 9626feature development with an actual reduction in the library size. 9627Current core subsystem library sizes are shown below. These are 9628the code and data sizes for the acpica.lib produced by the 9629Microsoft Visual C++ 6.0 compiler, and these values do not include 9630any ACPI driver or OSPM code. The debug version of the code 9631includes the debug output trace mechanism and has a larger code 9632and data size. Note that these values will vary depending on the 9633efficiency of the compiler and the compiler options used during 9634generation. 9635 9636 Previous Release (11_09_01): 9637 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 9638 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 9639 9640 Current Release: 9641 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 9642 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 9643 9644 2) Linux: 9645 9646Enhanced the ACPI boot-time initialization code to allow the use 9647of Local APIC tables for processor enumeration on IA-32, and to 9648pave the way for a fully MPS-free boot (on SMP systems) in the 9649near future. This functionality replaces 9650arch/i386/kernel/acpitables.c, which was introduced in an earlier 96512.4.15-preX release. To enable this feature you must add 9652"acpi_boot=on" to the kernel command line -- see the help entry 9653for CONFIG_ACPI_BOOT for more information. An IA-64 release is in 9654the works... 9655 9656Restructured the configuration options to allow boot-time table 9657parsing support without inclusion of the ACPI Interpreter (and 9658other) code. 9659 9660NOTE: This release does not include fixes for the reported events, 9661power-down, and thermal passive cooling issues (coming soon). 9662 9663 3) ASL Compiler: 9664 9665Added additional typechecking for Fields within restricted access 9666Operation Regions. All fields within EC and CMOS regions must be 9667declared with ByteAcc. All fields withing SMBus regions must be 9668declared with the BufferAcc access type. 9669 9670Fixed a problem where the listing file output of control methods 9671no longer interleaved the actual AML code with the ASL source 9672code. 9673 9674 9675 9676 9677---------------------------------------- 9678Summary of changes for this label: 11_09_01 9679 96801) ACPI CA Core Subsystem: 9681 9682Implemented ACPI 2.0-defined support for writes to fields with a 9683Buffer, String, or Integer source operand that is smaller than the 9684target field. In these cases, the source operand is zero-extended 9685to fill the target field. 9686 9687Fixed a problem where a Field starting bit offset (within the 9688parent operation region) was calculated incorrectly if the 9689 9690alignment of the field differed from the access width. This 9691affected CreateWordField, CreateDwordField, CreateQwordField, and 9692possibly other fields that use the "AccessAny" keyword. 9693 9694Fixed a problem introduced in the 11_02_01 release where indirect 9695stores through method arguments did not operate correctly. 9696 96972) Linux: 9698 9699Implemented boot-time ACPI table parsing support 9700(CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code 9701facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than 9702legacy BIOS interfaces (e.g. MPS) for the configuration of system 9703processors, memory, and interrupts during setup_arch(). Note that 9704this patch does not include the required architecture-specific 9705changes required to apply this information -- subsequent patches 9706will be posted for both IA32 and IA64 to achieve this. 9707 9708Added low-level sleep support for IA32 platforms, courtesy of Pat 9709Mochel. This allows IA32 systems to transition to/from various 9710sleeping states (e.g. S1, S3), although the lack of a centralized 9711driver model and power-manageable drivers will prevent its 9712(successful) use on most systems. 9713 9714Revamped the ACPI 'menuconfig' layout: created new "ACPI Support" 9715submenu, unified IA32 and IA64 options, added new "Boot using ACPI 9716tables" option, etc. 9717 9718Increased the default timeout for the EC driver from 1ms to 10ms 9719(1000 cycles of 10us) to try to address AE_TIME errors during EC 9720transactions. 9721 9722 ---------------------------------------- 9723Summary of changes for this label: 11_02_01 9724 97251) ACPI CA Core Subsystem: 9726 9727ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access 9728(QWordAcc keyword). All ACPI 2.0 64-bit support is now 9729implemented. 9730 9731OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required 9732changes to support ACPI 2.0 Qword field access. Read/Write 9733PciConfiguration(), Read/Write Memory(), and Read/Write Port() now 9734accept an ACPI_INTEGER (64 bits) as the value parameter. Also, 9735the value parameter for the address space handler interface is now 9736an ACPI_INTEGER. OSL implementations of these interfaces must now 9737handle the case where the Width parameter is 64. 9738 9739Index Fields: Fixed a problem where unaligned bit assembly and 9740disassembly for IndexFields was not supported correctly. 9741 9742Index and Bank Fields: Nested Index and Bank Fields are now 9743supported. During field access, a check is performed to ensure 9744that the value written to an Index or Bank register is not out of 9745the range of the register. The Index (or Bank) register is 9746written before each access to the field data. Future support will 9747include allowing individual IndexFields to be wider than the 9748DataRegister width. 9749 9750Fields: Fixed a problem where the AML interpreter was incorrectly 9751attempting to write beyond the end of a Field/OpRegion. This was 9752a boundary case that occurred when a DWORD field was written to a 9753BYTE access OpRegion, forcing multiple writes and causing the 9754interpreter to write one datum too many. 9755 9756Fields: Fixed a problem with Field/OpRegion access where the 9757starting bit address of a field was incorrectly calculated if the 9758current access type was wider than a byte (WordAcc, DwordAcc, or 9759QwordAcc). 9760 9761Fields: Fixed a problem where forward references to individual 9762FieldUnits (individual Field names within a Field definition) were 9763not resolved during the AML table load. 9764 9765Fields: Fixed a problem where forward references from a Field 9766definition to the parent Operation Region definition were not 9767resolved during the AML table load. 9768 9769Fields: Duplicate FieldUnit names within a scope are now detected 9770during AML table load. 9771 9772Acpi Interfaces: Fixed a problem where the AcpiGetName() interface 9773returned an incorrect name for the root node. 9774 9775Code and Data Size: Code and Data optimizations have permitted new 9776feature development with an actual reduction in the library size. 9777Current core subsystem library sizes are shown below. These are 9778the code and data sizes for the acpica.lib produced by the 9779Microsoft Visual C++ 6.0 compiler, and these values do not include 9780any ACPI driver or OSPM code. The debug version of the code 9781includes the debug output trace mechanism and has a larger code 9782and data size. Note that these values will vary depending on the 9783efficiency of the compiler and the compiler options used during 9784generation. 9785 9786 Previous Release (10_18_01): 9787 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 9788 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 9789 9790 Current Release: 9791 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 9792 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 9793 9794 2) Linux: 9795 9796Improved /proc processor output (Pavel Machek) Re-added 9797MODULE_LICENSE("GPL") to all modules. 9798 9799 3) ASL Compiler version X2030: 9800 9801Duplicate FieldUnit names within a scope are now detected and 9802flagged as errors. 9803 9804 4) Documentation: 9805 9806Programmer Reference updated to reflect OSL and address space 9807handler interface changes described above. 9808 9809---------------------------------------- 9810Summary of changes for this label: 10_18_01 9811 9812ACPI CA Core Subsystem: 9813 9814Fixed a problem with the internal object reference count mechanism 9815that occasionally caused premature object deletion. This resolves 9816all of the outstanding problem reports where an object is deleted 9817in the middle of an interpreter evaluation. Although this problem 9818only showed up in rather obscure cases, the solution to the 9819problem involved an adjustment of all reference counts involving 9820objects attached to namespace nodes. 9821 9822Fixed a problem with Field support in the interpreter where 9823writing to an aligned field whose length is an exact multiple (2 9824or greater) of the field access granularity would cause an attempt 9825to write beyond the end of the field. 9826 9827The top level AML opcode execution functions within the 9828interpreter have been renamed with a more meaningful and 9829consistent naming convention. The modules exmonad.c and 9830exdyadic.c were eliminated. New modules are exoparg1.c, 9831exoparg2.c, exoparg3.c, and exoparg6.c. 9832 9833Support for the ACPI 2.0 "Mid" ASL operator has been implemented. 9834 9835Fixed a problem where the AML debugger was causing some internal 9836objects to not be deleted during subsystem termination. 9837 9838Fixed a problem with the external AcpiEvaluateObject interface 9839where the subsystem would fault if the named object to be 9840evaluated refered to a constant such as Zero, Ones, etc. 9841 9842Fixed a problem with IndexFields and BankFields where the 9843subsystem would fault if the index, data, or bank registers were 9844not defined in the same scope as the field itself. 9845 9846Added printf format string checking for compilers that support 9847this feature. Corrected more than 50 instances of issues with 9848format specifiers within invocations of ACPI_DEBUG_PRINT 9849throughout the core subsystem code. 9850 9851The ASL "Revision" operator now returns the ACPI support level 9852implemented in the core - the value "2" since the ACPI 2.0 support 9853is more than 50% implemented. 9854 9855Enhanced the output of the AML debugger "dump namespace" command 9856to output in a more human-readable form. 9857 9858Current core subsystem library code sizes are shown below. These 9859 9860are the code and data sizes for the acpica.lib produced by the 9861Microsoft Visual C++ 6.0 compiler, and these values do not include 9862any ACPI driver or OSPM code. The debug version of the code 9863includes the full debug trace mechanism -- leading to a much 9864 9865larger code and data size. Note that these values will vary 9866depending on the efficiency of the compiler and the compiler 9867options used during generation. 9868 9869 Previous Label (09_20_01): 9870 Non-Debug Version: 65K Code, 5K Data, 70K Total 9871 Debug Version: 138K Code, 58K Data, 196K Total 9872 9873 This Label: 9874 9875 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 9876 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 9877 9878Linux: 9879 9880Implemented a "Bad BIOS Blacklist" to track machines that have 9881known ASL/AML problems. 9882 9883Enhanced the /proc interface for the thermal zone driver and added 9884support for _HOT (the critical suspend trip point). The 'info' 9885file now includes threshold/policy information, and allows setting 9886of _SCP (cooling preference) and _TZP (polling frequency) values 9887to the 'info' file. Examples: "echo tzp=5 > info" sets the polling 9888frequency to 5 seconds, and "echo scp=1 > info" sets the cooling 9889preference to the passive/quiet mode (if supported by the ASL). 9890 9891Implemented a workaround for a gcc bug that resuted in an OOPs 9892when loading the control method battery driver. 9893 9894 ---------------------------------------- 9895Summary of changes for this label: 09_20_01 9896 9897 ACPI CA Core Subsystem: 9898 9899The AcpiEnableEvent and AcpiDisableEvent interfaces have been 9900modified to allow individual GPE levels to be flagged as wake- 9901enabled (i.e., these GPEs are to remain enabled when the platform 9902sleeps.) 9903 9904The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now 9905support wake-enabled GPEs. This means that upon entering the 9906sleep state, all GPEs that are not wake-enabled are disabled. 9907When leaving the sleep state, these GPEs are reenabled. 9908 9909A local double-precision divide/modulo module has been added to 9910enhance portability to OS kernels where a 64-bit math library is 9911not available. The new module is "utmath.c". 9912 9913Several optimizations have been made to reduce the use of CPU 9914stack. Originally over 2K, the maximum stack usage is now below 99152K at 1860 bytes (1.82k) 9916 9917Fixed a problem with the AcpiGetFirmwareTable interface where the 9918root table pointer was not mapped into a logical address properly. 9919 9920Fixed a problem where a NULL pointer was being dereferenced in the 9921interpreter code for the ASL Notify operator. 9922 9923Fixed a problem where the use of the ASL Revision operator 9924returned an error. This operator now returns the current version 9925of the ACPI CA core subsystem. 9926 9927Fixed a problem where objects passed as control method parameters 9928to AcpiEvaluateObject were always deleted at method termination. 9929However, these objects may end up being stored into the namespace 9930by the called method. The object reference count mechanism was 9931applied to these objects instead of a force delete. 9932 9933Fixed a problem where static strings or buffers (contained in the 9934AML code) that are declared as package elements within the ASL 9935code could cause a fault because the interpreter would attempt to 9936delete them. These objects are now marked with the "static 9937object" flag to prevent any attempt to delete them. 9938 9939Implemented an interpreter optimization to use operands directly 9940from the state object instead of extracting the operands to local 9941variables. This reduces stack use and code size, and improves 9942performance. 9943 9944The module exxface.c was eliminated as it was an unnecessary extra 9945layer of code. 9946 9947Current core subsystem library code sizes are shown below. These 9948are the code and data sizes for the acpica.lib produced by the 9949Microsoft Visual C++ 6.0 compiler, and these values do not include 9950any ACPI driver or OSPM code. The debug version of the code 9951includes the full debug trace mechanism -- leading to a much 9952larger code and data size. Note that these values will vary 9953depending on the efficiency of the compiler and the compiler 9954options used during generation. 9955 9956 Non-Debug Version: 65K Code, 5K Data, 70K Total 9957(Previously 69K) Debug Version: 138K Code, 58K Data, 196K 9958Total (Previously 195K) 9959 9960Linux: 9961 9962Support for ACPI 2.0 64-bit integers has been added. All ACPI 9963Integer objects are now 64 bits wide 9964 9965All Acpi data types and structures are now in lower case. Only 9966Acpi macros are upper case for differentiation. 9967 9968 Documentation: 9969 9970Changes to the external interfaces as described above. 9971 9972 ---------------------------------------- 9973Summary of changes for this label: 08_31_01 9974 9975 ACPI CA Core Subsystem: 9976 9977A bug with interpreter implementation of the ASL Divide operator 9978was found and fixed. The implicit function return value (not the 9979explicit store operands) was returning the remainder instead of 9980the quotient. This was a longstanding bug and it fixes several 9981known outstanding issues on various platforms. 9982 9983The ACPI_DEBUG_PRINT and function trace entry/exit macros have 9984been further optimized for size. There are 700 invocations of the 9985DEBUG_PRINT macro alone, so each optimization reduces the size of 9986the debug version of the subsystem significantly. 9987 9988A stack trace mechanism has been implemented. The maximum stack 9989usage is about 2K on 32-bit platforms. The debugger command "stat 9990stack" will display the current maximum stack usage. 9991 9992All public symbols and global variables within the subsystem are 9993now prefixed with the string "Acpi". This keeps all of the 9994symbols grouped together in a kernel map, and avoids conflicts 9995with other kernel subsystems. 9996 9997Most of the internal fixed lookup tables have been moved into the 9998code segment via the const operator. 9999 10000Several enhancements have been made to the interpreter to both 10001reduce the code size and improve performance. 10002 10003Current core subsystem library code sizes are shown below. These 10004are the code and data sizes for the acpica.lib produced by the 10005Microsoft Visual C++ 6.0 compiler, and these values do not include 10006any ACPI driver or OSPM code. The debug version of the code 10007includes the full debug trace mechanism which contains over 700 10008invocations of the DEBUG_PRINT macro, 500 function entry macro 10009invocations, and over 900 function exit macro invocations -- 10010leading to a much larger code and data size. Note that these 10011values will vary depending on the efficiency of the compiler and 10012the compiler options used during generation. 10013 10014 Non-Debug Version: 64K Code, 5K Data, 69K Total 10015Debug Version: 137K Code, 58K Data, 195K Total 10016 10017 Linux: 10018 10019Implemented wbinvd() macro, pending a kernel-wide definition. 10020 10021Fixed /proc/acpi/event to handle poll() and short reads. 10022 10023 ASL Compiler, version X2026: 10024 10025Fixed a problem introduced in the previous label where the AML 10026 10027code emitted for package objects produced packages with zero 10028length. 10029 10030 ---------------------------------------- 10031Summary of changes for this label: 08_16_01 10032 10033ACPI CA Core Subsystem: 10034 10035The following ACPI 2.0 ASL operators have been implemented in the 10036AML interpreter (These are already supported by the Intel ASL 10037compiler): ToDecimalString, ToHexString, ToString, ToInteger, and 10038ToBuffer. Support for 64-bit AML constants is implemented in the 10039AML parser, debugger, and disassembler. 10040 10041The internal memory tracking mechanism (leak detection code) has 10042been upgraded to reduce the memory overhead (a separate tracking 10043block is no longer allocated for each memory allocation), and now 10044supports all of the internal object caches. 10045 10046The data structures and code for the internal object caches have 10047been coelesced and optimized so that there is a single cache and 10048memory list data structure and a single group of functions that 10049implement generic cache management. This has reduced the code 10050size in both the debug and release versions of the subsystem. 10051 10052The DEBUG_PRINT macro(s) have been optimized for size and replaced 10053by ACPI_DEBUG_PRINT. The syntax for this macro is slightly 10054different, because it generates a single call to an internal 10055function. This results in a savings of about 90 bytes per 10056invocation, resulting in an overall code and data savings of about 1005716% in the debug version of the subsystem. 10058 10059 Linux: 10060 10061Fixed C3 disk corruption problems and re-enabled C3 on supporting 10062machines. 10063 10064Integrated low-level sleep code by Patrick Mochel. 10065 10066Further tweaked source code Linuxization. 10067 10068Other minor fixes. 10069 10070 ASL Compiler: 10071 10072Support for ACPI 2.0 variable length packages is fixed/completed. 10073 10074Fixed a problem where the optional length parameter for the ACPI 100752.0 ToString operator. 10076 10077Fixed multiple extraneous error messages when a syntax error is 10078detected within the declaration line of a control method. 10079 10080 ---------------------------------------- 10081Summary of changes for this label: 07_17_01 10082 10083ACPI CA Core Subsystem: 10084 10085Added a new interface named AcpiGetFirmwareTable to obtain any 10086ACPI table via the ACPI signature. The interface can be called at 10087any time during kernel initialization, even before the kernel 10088virtual memory manager is initialized and paging is enabled. This 10089allows kernel subsystems to obtain ACPI tables very early, even 10090before the ACPI CA subsystem is initialized. 10091 10092Fixed a problem where Fields defined with the AnyAcc attribute 10093could be resolved to the incorrect address under the following 10094conditions: 1) the field width is larger than 8 bits and 2) the 10095parent operation region is not defined on a DWORD boundary. 10096 10097Fixed a problem where the interpreter is not being locked during 10098namespace initialization (during execution of the _INI control 10099methods), causing an error when an attempt is made to release it 10100later. 10101 10102ACPI 2.0 support in the AML Interpreter has begun and will be 10103ongoing throughout the rest of this year. In this label, The Mod 10104operator is implemented. 10105 10106Added a new data type to contain full PCI addresses named 10107ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device, 10108and Function values. 10109 10110 Linux: 10111 10112Enhanced the Linux version of the source code to change most 10113capitalized ACPI type names to lowercase. For example, all 10114instances of ACPI_STATUS are changed to acpi_status. This will 10115result in a large diff, but the change is strictly cosmetic and 10116aligns the CA code closer to the Linux coding standard. 10117 10118OSL Interfaces: 10119 10120The interfaces to the PCI configuration space have been changed to 10121add the PCI Segment number and to split the single 32-bit combined 10122DeviceFunction field into two 16-bit fields. This was 10123accomplished by moving the four values that define an address in 10124PCI configuration space (segment, bus, device, and function) to 10125the new ACPI_PCI_ID structure. 10126 10127The changes to the PCI configuration space interfaces led to a 10128reexamination of the complete set of address space access 10129interfaces for PCI, I/O, and Memory. The previously existing 18 10130interfaces have proven difficult to maintain (any small change 10131must be propagated across at least 6 interfaces) and do not easily 10132allow for future expansion to 64 bits if necessary. Also, on some 10133systems, it would not be appropriate to demultiplex the access 10134width (8, 16, 32,or 64) before calling the OSL if the 10135corresponding native OS interfaces contain a similar access width 10136parameter. For these reasons, the 18 address space interfaces 10137have been replaced by these 6 new ones: 10138 10139AcpiOsReadPciConfiguration 10140AcpiOsWritePciConfiguration 10141AcpiOsReadMemory 10142AcpiOsWriteMemory 10143AcpiOsReadPort 10144AcpiOsWritePort 10145 10146Added a new interface named AcpiOsGetRootPointer to allow the OSL 10147to perform the platform and/or OS-specific actions necessary to 10148obtain the ACPI RSDP table pointer. On IA-32 platforms, this 10149interface will simply call down to the CA core to perform the low- 10150memory search for the table. On IA-64, the RSDP is obtained from 10151EFI. Migrating this interface to the OSL allows the CA core to 10152 10153remain OS and platform independent. 10154 10155Added a new interface named AcpiOsSignal to provide a generic 10156"function code and pointer" interface for various miscellaneous 10157signals and notifications that must be made to the host OS. The 10158first such signals are intended to support the ASL Fatal and 10159Breakpoint operators. In the latter case, the AcpiOsBreakpoint 10160interface has been obsoleted. 10161 10162The definition of the AcpiFormatException interface has been 10163changed to simplify its use. The caller no longer must supply a 10164buffer to the call; A pointer to a const string is now returned 10165directly. This allows the call to be easily used in printf 10166statements, etc. since the caller does not have to manage a local 10167buffer. 10168 10169 10170 ASL Compiler, Version X2025: 10171 10172The ACPI 2.0 Switch/Case/Default operators have been implemented 10173and are fully functional. They will work with all ACPI 1.0 10174interpreters, since the operators are simply translated to If/Else 10175pairs. 10176 10177The ACPI 2.0 ElseIf operator is implemented and will also work 10178with 1.0 interpreters, for the same reason. 10179 10180Implemented support for ACPI 2.0 variable-length packages. These 10181packages have a separate opcode, and their size is determined by 10182the interpreter at run-time. 10183 10184Documentation The ACPI CA Programmer Reference has been updated to 10185reflect the new interfaces and changes to existing interfaces. 10186 10187 ------------------------------------------ 10188Summary of changes for this label: 06_15_01 10189 10190 ACPI CA Core Subsystem: 10191 10192Fixed a problem where a DWORD-accessed field within a Buffer 10193object would get its byte address inadvertently rounded down to 10194the nearest DWORD. Buffers are always Byte-accessible. 10195 10196 ASL Compiler, version X2024: 10197 10198Fixed a problem where the Switch() operator would either fault or 10199hang the compiler. Note however, that the AML code for this ACPI 102002.0 operator is not yet implemented. 10201 10202Compiler uses the new AcpiOsGetTimer interface to obtain compile 10203timings. 10204 10205Implementation of the CreateField operator automatically converts 10206a reference to a named field within a resource descriptor from a 10207byte offset to a bit offset if required. 10208 10209Added some missing named fields from the resource descriptor 10210support. These are the names that are automatically created by the 10211compiler to reference fields within a descriptor. They are only 10212valid at compile time and are not passed through to the AML 10213interpreter. 10214 10215Resource descriptor named fields are now typed as Integers and 10216subject to compile-time typechecking when used in expressions. 10217 10218 ------------------------------------------ 10219Summary of changes for this label: 05_18_01 10220 10221 ACPI CA Core Subsystem: 10222 10223Fixed a couple of problems in the Field support code where bits 10224from adjacent fields could be returned along with the proper field 10225bits. Restructured the field support code to improve performance, 10226readability and maintainability. 10227 10228New DEBUG_PRINTP macro automatically inserts the procedure name 10229into the output, saving hundreds of copies of procedure name 10230strings within the source, shrinking the memory footprint of the 10231debug version of the core subsystem. 10232 10233 Source Code Structure: 10234 10235The source code directory tree was restructured to reflect the 10236current organization of the component architecture. Some files 10237and directories have been moved and/or renamed. 10238 10239 Linux: 10240 10241Fixed leaking kacpidpc processes. 10242 10243Fixed queueing event data even when /proc/acpi/event is not 10244opened. 10245 10246 ASL Compiler, version X2020: 10247 10248Memory allocation performance enhancement - over 24X compile time 10249improvement on large ASL files. Parse nodes and namestring 10250buffers are now allocated from a large internal compiler buffer. 10251 10252The temporary .SRC file is deleted unless the "-s" option is 10253specified 10254 10255The "-d" debug output option now sends all output to the .DBG file 10256instead of the console. 10257 10258"External" second parameter is now optional 10259 10260"ElseIf" syntax now properly allows the predicate 10261 10262Last operand to "Load" now recognized as a Target operand 10263 10264Debug object can now be used anywhere as a normal object. 10265 10266ResourceTemplate now returns an object of type BUFFER 10267 10268EISAID now returns an object of type INTEGER 10269 10270"Index" now works with a STRING operand 10271 10272"LoadTable" now accepts optional parameters 10273 10274"ToString" length parameter is now optional 10275 10276"Interrupt (ResourceType," parse error fixed. 10277 10278"Register" with a user-defined region space parse error fixed 10279 10280Escaped backslash at the end of a string ("\\") scan/parse error 10281fixed 10282 10283"Revision" is now an object of type INTEGER. 10284 10285 10286 10287------------------------------------------ 10288Summary of changes for this label: 05_02_01 10289 10290Linux: 10291 10292/proc/acpi/event now blocks properly. 10293 10294Removed /proc/sys/acpi. You can still dump your DSDT from 10295/proc/acpi/dsdt. 10296 10297 ACPI CA Core Subsystem: 10298 10299Fixed a problem introduced in the previous label where some of the 10300"small" resource descriptor types were not recognized. 10301 10302Improved error messages for the case where an ASL Field is outside 10303the range of the parent operation region. 10304 10305 ASL Compiler, version X2018: 10306 10307 10308Added error detection for ASL Fields that extend beyond the length 10309of the parent operation region (only if the length of the region 10310is known at compile time.) This includes fields that have a 10311minimum access width that is smaller than the parent region, and 10312individual field units that are partially or entirely beyond the 10313extent of the parent. 10314 10315 10316 10317------------------------------------------ 10318Summary of changes for this label: 04_27_01 10319 10320 ACPI CA Core Subsystem: 10321 10322Fixed a problem where the namespace mutex could be released at the 10323wrong time during execution of AcpiRemoveAddressSpaceHandler. 10324 10325Added optional thread ID output for debug traces, to simplify 10326debugging of multiple threads. Added context switch notification 10327when the debug code realizes that a different thread is now 10328executing ACPI code. 10329 10330Some additional external data types have been prefixed with the 10331string "ACPI_" for consistency. This may effect existing code. 10332The data types affected are the external callback typedefs - e.g., 10333 10334WALK_CALLBACK becomes ACPI_WALK_CALLBACK. 10335 10336 Linux: 10337 10338Fixed an issue with the OSL semaphore implementation where a 10339thread was waking up with an error from receiving a SIGCHLD 10340signal. 10341 10342Linux version of ACPI CA now uses the system C library for string 10343manipulation routines instead of a local implementation. 10344 10345Cleaned up comments and removed TBDs. 10346 10347 ASL Compiler, version X2017: 10348 10349Enhanced error detection and reporting for all file I/O 10350operations. 10351 10352 Documentation: 10353 10354Programmer Reference updated to version 1.06. 10355 10356 10357 10358------------------------------------------ 10359Summary of changes for this label: 04_13_01 10360 10361 ACPI CA Core Subsystem: 10362 10363Restructured support for BufferFields and RegionFields. 10364BankFields support is now fully operational. All known 32-bit 10365limitations on field sizes have been removed. Both BufferFields 10366and (Operation) RegionFields are now supported by the same field 10367management code. 10368 10369Resource support now supports QWORD address and IO resources. The 1037016/32/64 bit address structures and the Extended IRQ structure 10371have been changed to properly handle Source Resource strings. 10372 10373A ThreadId of -1 is now used to indicate a "mutex not acquired" 10374condition internally and must never be returned by AcpiOsThreadId. 10375This reserved value was changed from 0 since Unix systems allow a 10376thread ID of 0. 10377 10378Linux: 10379 10380Driver code reorganized to enhance portability 10381 10382Added a kernel configuration option to control ACPI_DEBUG 10383 10384Fixed the EC driver to honor _GLK. 10385 10386ASL Compiler, version X2016: 10387 10388Fixed support for the "FixedHw" keyword. Previously, the FixedHw 10389address space was set to 0, not 0x7f as it should be. 10390 10391 ------------------------------------------ 10392Summary of changes for this label: 03_13_01 10393 10394 ACPI CA Core Subsystem: 10395 10396During ACPI initialization, the _SB_._INI method is now run if 10397present. 10398 10399Notify handler fix - notifies are deferred until the parent method 10400completes execution. This fixes the "mutex already acquired" 10401issue seen occasionally. 10402 10403Part of the "implicit conversion" rules in ACPI 2.0 have been 10404found to cause compatibility problems with existing ASL/AML. The 10405convert "result-to-target-type" implementation has been removed 10406for stores to method Args and Locals. Source operand conversion 10407is still fully implemented. Possible changes to ACPI 2.0 10408specification pending. 10409 10410Fix to AcpiRsCalculatePciRoutingTableLength to return correct 10411length. 10412 10413Fix for compiler warnings for 64-bit compiles. 10414 10415 Linux: 10416 10417/proc output aligned for easier parsing. 10418 10419Release-version compile problem fixed. 10420 10421New kernel configuration options documented in Configure.help. 10422 10423IBM 600E - Fixed Sleep button may generate "Invalid <NULL> 10424context" message. 10425 10426 OSPM: 10427 10428Power resource driver integrated with bus manager. 10429 10430Fixed kernel fault during active cooling for thermal zones. 10431 10432Source Code: 10433 10434The source code tree has been restructured. 10435 10436 10437 10438------------------------------------------ 10439Summary of changes for this label: 03_02_01 10440 10441 Linux OS Services Layer (OSL): 10442 10443Major revision of all Linux-specific code. 10444 10445Modularized all ACPI-specific drivers. 10446 10447Added new thermal zone and power resource drivers. 10448 10449Revamped /proc interface (new functionality is under /proc/acpi). 10450 10451New kernel configuration options. 10452 10453 Linux known issues: 10454 10455New kernel configuration options not documented in Configure.help 10456yet. 10457 10458 10459Module dependencies not currently implemented. If used, they 10460should be loaded in this order: busmgr, power, ec, system, 10461processor, battery, ac_adapter, button, thermal. 10462 10463Modules will not load if CONFIG_MODVERSION is set. 10464 10465IBM 600E - entering S5 may reboot instead of shutting down. 10466 10467IBM 600E - Sleep button may generate "Invalid <NULL> context" 10468message. 10469 10470Some systems may fail with "execution mutex already acquired" 10471message. 10472 10473 ACPI CA Core Subsystem: 10474 10475Added a new OSL Interface, AcpiOsGetThreadId. This was required 10476for the deadlock detection code. Defined to return a non-zero, 32- 10477bit thread ID for the currently executing thread. May be a non- 10478zero constant integer on single-thread systems. 10479 10480Implemented deadlock detection for internal subsystem mutexes. We 10481may add conditional compilation for this code (debug only) later. 10482 10483ASL/AML Mutex object semantics are now fully supported. This 10484includes multiple acquires/releases by owner and support for the 10485 10486Mutex SyncLevel parameter. 10487 10488A new "Force Release" mechanism automatically frees all ASL 10489Mutexes that have been acquired but not released when a thread 10490exits the interpreter. This forces conformance to the ACPI spec 10491("All mutexes must be released when an invocation exits") and 10492prevents deadlocked ASL threads. This mechanism can be expanded 10493(later) to monitor other resource acquisitions if OEM ASL code 10494continues to misbehave (which it will). 10495 10496Several new ACPI exception codes have been added for the Mutex 10497support. 10498 10499Recursive method calls are now allowed and supported (the ACPI 10500spec does in fact allow recursive method calls.) The number of 10501recursive calls is subject to the restrictions imposed by the 10502SERIALIZED method keyword and SyncLevel (ACPI 2.0) method 10503parameter. 10504 10505Implemented support for the SyncLevel parameter for control 10506methods (ACPI 2.0 feature) 10507 10508Fixed a deadlock problem when multiple threads attempted to use 10509the interpreter. 10510 10511Fixed a problem where the string length of a String package 10512element was not always set in a package returned from 10513AcpiEvaluateObject. 10514 10515Fixed a problem where the length of a String package element was 10516not always included in the length of the overall package returned 10517from AcpiEvaluateObject. 10518 10519Added external interfaces (Acpi*) to the ACPI debug memory 10520manager. This manager keeps a list of all outstanding 10521allocations, and can therefore detect memory leaks and attempts to 10522free memory blocks more than once. Useful for code such as the 10523power manager, etc. May not be appropriate for device drivers. 10524Performance with the debug code enabled is slow. 10525 10526The ACPI Global Lock is now an optional hardware element. 10527 10528 ASL Compiler Version X2015: 10529 10530Integrated changes to allow the compiler to be generated on 10531multiple platforms. 10532 10533Linux makefile added to generate the compiler on Linux 10534 10535 Source Code: 10536 10537All platform-specific headers have been moved to their own 10538subdirectory, Include/Platform. 10539 10540New source file added, Interpreter/ammutex.c 10541 10542New header file, Include/acstruct.h 10543 10544 Documentation: 10545 10546The programmer reference has been updated for the following new 10547interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree 10548 10549 ------------------------------------------ 10550Summary of changes for this label: 02_08_01 10551 10552Core ACPI CA Subsystem: Fixed a problem where an error was 10553incorrectly returned if the return resource buffer was larger than 10554the actual data (in the resource interfaces). 10555 10556References to named objects within packages are resolved to the 10557 10558full pathname string before packages are returned directly (via 10559the AcpiEvaluateObject interface) or indirectly via the resource 10560interfaces. 10561 10562Linux OS Services Layer (OSL): 10563 10564Improved /proc battery interface. 10565 10566 10567Added C-state debugging output and other miscellaneous fixes. 10568 10569ASL Compiler Version X2014: 10570 10571All defined method arguments can now be used as local variables, 10572including the ones that are not actually passed in as parameters. 10573The compiler tracks initialization of the arguments and issues an 10574exception if they are used without prior assignment (just like 10575locals). 10576 10577The -o option now specifies a filename prefix that is used for all 10578output files, including the AML output file. Otherwise, the 10579default behavior is as follows: 1) the AML goes to the file 10580specified in the DSDT. 2) all other output files use the input 10581source filename as the base. 10582 10583 ------------------------------------------ 10584Summary of changes for this label: 01_25_01 10585 10586Core ACPI CA Subsystem: Restructured the implementation of object 10587store support within the interpreter. This includes support for 10588the Store operator as well as any ASL operators that include a 10589target operand. 10590 10591Partially implemented support for Implicit Result-to-Target 10592conversion. This is when a result object is converted on the fly 10593to the type of an existing target object. Completion of this 10594support is pending further analysis of the ACPI specification 10595concerning this matter. 10596 10597CPU-specific code has been removed from the subsystem (hardware 10598directory). 10599 10600New Power Management Timer functions added 10601 10602Linux OS Services Layer (OSL): Moved system state transition code 10603to the core, fixed it, and modified Linux OSL accordingly. 10604 10605Fixed C2 and C3 latency calculations. 10606 10607 10608We no longer use the compilation date for the version message on 10609initialization, but retrieve the version from AcpiGetSystemInfo(). 10610 10611Incorporated for fix Sony VAIO machines. 10612 10613Documentation: The Programmer Reference has been updated and 10614reformatted. 10615 10616 10617ASL Compiler: Version X2013: Fixed a problem where the line 10618numbering and error reporting could get out of sync in the 10619presence of multiple include files. 10620 10621 ------------------------------------------ 10622Summary of changes for this label: 01_15_01 10623 10624Core ACPI CA Subsystem: 10625 10626Implemented support for type conversions in the execution of the 10627ASL Concatenate operator (The second operand is converted to 10628match the type of the first operand before concatenation.) 10629 10630Support for implicit source operand conversion is partially 10631implemented. The ASL source operand types Integer, Buffer, and 10632String are freely interchangeable for most ASL operators and are 10633converted by the interpreter on the fly as required. Implicit 10634Target operand conversion (where the result is converted to the 10635target type before storing) is not yet implemented. 10636 10637Support for 32-bit and 64-bit BCD integers is implemented. 10638 10639Problem fixed where a field read on an aligned field could cause a 10640read past the end of the field. 10641 10642New exception, AE_AML_NO_RETURN_VALUE, is returned when a method 10643does not return a value, but the caller expects one. (The ASL 10644compiler flags this as a warning.) 10645 10646ASL Compiler: 10647 10648Version X2011: 106491. Static typechecking of all operands is implemented. This 10650prevents the use of invalid objects (such as using a Package where 10651an Integer is required) at compile time instead of at interpreter 10652run-time. 106532. The ASL source line is printed with ALL errors and warnings. 106543. Bug fix for source EOF without final linefeed. 106554. Debug option is split into a parse trace and a namespace trace. 106565. Namespace output option (-n) includes initial values for 10657integers and strings. 106586. Parse-only option added for quick syntax checking. 106597. Compiler checks for duplicate ACPI name declarations 10660 10661Version X2012: 106621. Relaxed typechecking to allow interchangeability between 10663strings, integers, and buffers. These types are now converted by 10664the interpreter at runtime. 106652. Compiler reports time taken by each internal subsystem in the 10666debug output file. 10667 10668 10669 ------------------------------------------ 10670Summary of changes for this label: 12_14_00 10671 10672ASL Compiler: 10673 10674This is the first official release of the compiler. Since the 10675compiler requires elements of the Core Subsystem, this label 10676synchronizes everything. 10677 10678------------------------------------------ 10679Summary of changes for this label: 12_08_00 10680 10681 10682Fixed a problem where named references within the ASL definition 10683of both OperationRegions and CreateXXXFields did not work 10684properly. The symptom was an AE_AML_OPERAND_TYPE during 10685initialization of the region/field. This is similar (but not 10686related internally) to the problem that was fixed in the last 10687label. 10688 10689Implemented both 32-bit and 64-bit support for the BCD ASL 10690functions ToBCD and FromBCD. 10691 10692Updated all legal headers to include "2000" in the copyright 10693years. 10694 10695 ------------------------------------------ 10696Summary of changes for this label: 12_01_00 10697 10698Fixed a problem where method invocations within the ASL definition 10699of both OperationRegions and CreateXXXFields did not work 10700properly. The symptom was an AE_AML_OPERAND_TYPE during 10701initialization of the region/field: 10702 10703 nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments 10704[DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s) 10705(0x3005) 10706 10707Fixed a problem where operators with more than one nested 10708subexpression would fail. The symptoms were varied, by mostly 10709AE_AML_OPERAND_TYPE errors. This was actually a rather serious 10710problem that has gone unnoticed until now. 10711 10712 Subtract (Add (1,2), Multiply (3,4)) 10713 10714Fixed a problem where AcpiGetHandle didn't quite get fixed in the 10715previous build (The prefix part of a relative path was handled 10716incorrectly). 10717 10718Fixed a problem where Operation Region initialization failed if 10719the operation region name was a "namepath" instead of a simple 10720"nameseg". Symptom was an AE_NO_OPERAND error. 10721 10722Fixed a problem where an assignment to a local variable via the 10723indirect RefOf mechanism only worked for the first such 10724assignment. Subsequent assignments were ignored. 10725 10726 ------------------------------------------ 10727Summary of changes for this label: 11_15_00 10728 10729ACPI 2.0 table support with backwards support for ACPI 1.0 and the 107300.71 extensions. Note: although we can read ACPI 2.0 BIOS tables, 10731the AML interpreter does NOT have support for the new 2.0 ASL 10732grammar terms at this time. 10733 10734All ACPI hardware access is via the GAS structures in the ACPI 2.0 10735FADT. 10736 10737All physical memory addresses across all platforms are now 64 bits 10738wide. Logical address width remains dependent on the platform 10739(i.e., "void *"). 10740 10741AcpiOsMapMemory interface changed to a 64-bit physical address. 10742 10743The AML interpreter integer size is now 64 bits, as per the ACPI 107442.0 specification. 10745 10746For backwards compatibility with ACPI 1.0, ACPI tables with a 10747revision number less than 2 use 32-bit integers only. 10748 10749Fixed a problem where the evaluation of OpRegion operands did not 10750always resolve them to numbers properly. 10751 10752------------------------------------------ 10753Summary of changes for this label: 10_20_00 10754 10755Fix for CBN_._STA issue. This fix will allow correct access to 10756CBN_ OpRegions when the _STA returns 0x8. 10757 10758Support to convert ACPI constants (Ones, Zeros, One) to actual 10759values before a package object is returned 10760 10761Fix for method call as predicate to if/while construct causing 10762incorrect if/while behavior 10763 10764Fix for Else block package lengths sometimes calculated wrong (if 10765block > 63 bytes) 10766 10767Fix for Processor object length field, was always zero 10768 10769Table load abort if FACP sanity check fails 10770 10771Fix for problem with Scope(name) if name already exists 10772 10773Warning emitted if a named object referenced cannot be found 10774(resolved) during method execution. 10775 10776 10777 10778 10779 10780------------------------------------------ 10781Summary of changes for this label: 9_29_00 10782 10783New table initialization interfaces: AcpiInitializeSubsystem no 10784longer has any parameters AcpiFindRootPointer - Find the RSDP (if 10785necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP- 10786>RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by 10787AcpiLoadTables 10788 10789Note: These interface changes require changes to all existing OSDs 10790 10791The PCI_Config default address space handler is always installed 10792at the root namespace object. 10793 10794------------------------------------------- 10795Summary of changes for this label: 09_15_00 10796 10797The new initialization architecture is implemented. New 10798interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize) 10799AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace 10800 10801(Namespace is automatically loaded when a table is loaded) 10802 10803The ACPI_OPERAND_OBJECT has been optimized to shrink its size from 1080452 bytes to 32 bytes. There is usually one of these for every 10805namespace object, so the memory savings is significant. 10806 10807Implemented just-in-time evaluation of the CreateField operators. 10808 10809Bug fixes for IA-64 support have been integrated. 10810 10811Additional code review comments have been implemented 10812 10813The so-called "third pass parse" has been replaced by a final walk 10814through the namespace to initialize all operation regions (address 10815spaces) and fields that have not yet been initialized during the 10816execution of the various _INI and REG methods. 10817 10818New file - namespace/nsinit.c 10819 10820------------------------------------------- 10821Summary of changes for this label: 09_01_00 10822 10823Namespace manager data structures have been reworked to change the 10824primary object from a table to a single object. This has 10825resulted in dynamic memory savings of 3X within the namespace and 108262X overall in the ACPI CA subsystem. 10827 10828Fixed problem where the call to AcpiEvFindPciRootBuses was 10829inadvertently left commented out. 10830 10831Reduced the warning count when generating the source with the GCC 10832compiler. 10833 10834Revision numbers added to each module header showing the 10835SourceSafe version of the file. Please refer to this version 10836number when giving us feedback or comments on individual modules. 10837 10838The main object types within the subsystem have been renamed to 10839clarify their purpose: 10840 10841ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT 10842ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT 10843ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE 10844 10845NOTE: no changes to the initialization sequence are included in 10846this label. 10847 10848------------------------------------------- 10849Summary of changes for this label: 08_23_00 10850 10851Fixed problem where TerminateControlMethod was being called 10852multiple times per method 10853 10854Fixed debugger problem where single stepping caused a semaphore to 10855be oversignalled 10856 10857Improved performance through additional parse object caching - 10858added ACPI_EXTENDED_OP type 10859 10860------------------------------------------- 10861Summary of changes for this label: 08_10_00 10862 10863Parser/Interpreter integration: Eliminated the creation of 10864complete parse trees for ACPI tables and control methods. 10865Instead, parse subtrees are created and then deleted as soon as 10866they are processed (Either entered into the namespace or executed 10867by the interpreter). This reduces the use of dynamic kernel 10868memory significantly. (about 10X) 10869 10870Exception codes broken into classes and renumbered. Be sure to 10871recompile all code that includes acexcep.h. Hopefully we won't 10872have to renumber the codes again now that they are split into 10873classes (environment, programmer, AML code, ACPI table, and 10874internal). 10875 10876Fixed some additional alignment issues in the Resource Manager 10877subcomponent 10878 10879Implemented semaphore tracking in the AcpiExec utility, and fixed 10880several places where mutexes/semaphores were being unlocked 10881without a corresponding lock operation. There are no known 10882semaphore or mutex "leaks" at this time. 10883 10884Fixed the case where an ASL Return operator is used to return an 10885unnamed package. 10886 10887------------------------------------------- 10888Summary of changes for this label: 07_28_00 10889 10890Fixed a problem with the way addresses were calculated in 10891AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem 10892manifested itself when a Field was created with WordAccess or 10893DwordAccess, but the field unit defined within the Field was less 10894 10895than a Word or Dword. 10896 10897Fixed a problem in AmlDumpOperands() module's loop to pull 10898operands off of the operand stack to display information. The 10899problem manifested itself as a TLB error on 64-bit systems when 10900accessing an operand stack with two or more operands. 10901 10902Fixed a problem with the PCI configuration space handlers where 10903context was getting confused between accesses. This required a 10904change to the generic address space handler and address space 10905setup definitions. Handlers now get both a global handler context 10906(this is the one passed in by the user when executing 10907AcpiInstallAddressSpaceHandler() and a specific region context 10908that is unique to each region (For example, the _ADR, _SEG and 10909_BBN values associated with a specific region). The generic 10910function definitions have changed to the following: 10911 10912typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function, 10913UINT32 Address, UINT32 BitWidth, UINT32 *Value, void 10914*HandlerContext, // This used to be void *Context void 10915*RegionContext); // This is an additional parameter 10916 10917typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE 10918RegionHandle, UINT32 Function, void *HandlerContext, void 10919**RegionContext); // This used to be **ReturnContext 10920 10921------------------------------------------- 10922Summary of changes for this label: 07_21_00 10923 10924Major file consolidation and rename. All files within the 10925interpreter have been renamed as well as most header files. This 10926was done to prevent collisions with existing files in the host 10927OSs -- filenames such as "config.h" and "global.h" seem to be 10928quite common. The VC project files have been updated. All 10929makefiles will require modification. 10930 10931The parser/interpreter integration continues in Phase 5 with the 10932implementation of a complete 2-pass parse (the AML is parsed 10933twice) for each table; This avoids the construction of a huge 10934parse tree and therefore reduces the amount of dynamic memory 10935required by the subsystem. Greater use of the parse object cache 10936means that performance is unaffected. 10937 10938Many comments from the two code reviews have been rolled in. 10939 10940The 64-bit alignment support is complete. 10941 10942------------------------------------------- 10943Summary of changes for this label: 06_30_00 10944 10945With a nod and a tip of the hat to the technology of yesteryear, 10946we've added support in the source code for 80 column output 10947devices. The code is now mostly constrained to 80 columns or 10948less to support environments and editors that 1) cannot display 10949or print more than 80 characters on a single line, and 2) cannot 10950disable line wrapping. 10951 10952A major restructuring of the namespace data structure has been 10953completed. The result is 1) cleaner and more 10954understandable/maintainable code, and 2) a significant reduction 10955in the dynamic memory requirement for each named ACPI object 10956(almost half). 10957 10958------------------------------------------- 10959Summary of changes for this label: 06_23_00 10960 10961Linux support has been added. In order to obtain approval to get 10962the ACPI CA subsystem into the Linux kernel, we've had to make 10963quite a few changes to the base subsystem that will affect all 10964users (all the changes are generic and OS- independent). The 10965effects of these global changes have been somewhat far reaching. 10966Files have been merged and/or renamed and interfaces have been 10967renamed. The major changes are described below. 10968 10969Osd* interfaces renamed to AcpiOs* to eliminate namespace 10970pollution/confusion within our target kernels. All OSD 10971interfaces must be modified to match the new naming convention. 10972 10973Files merged across the subsystem. A number of the smaller source 10974and header files have been merged to reduce the file count and 10975increase the density of the existing files. There are too many 10976to list here. In general, makefiles that call out individual 10977files will require rebuilding. 10978 10979Interpreter files renamed. All interpreter files now have the 10980prefix am* instead of ie* and is*. 10981 10982Header files renamed: The acapi.h file is now acpixf.h. The 10983acpiosd.h file is now acpiosxf.h. We are removing references to 10984the acronym "API" since it is somewhat windowsy. The new name is 10985"external interface" or xface or xf in the filenames.j 10986 10987 10988All manifest constants have been forced to upper case (some were 10989mixed case.) Also, the string "ACPI_" has been prepended to many 10990(not all) of the constants, typedefs, and structs. 10991 10992The globals "DebugLevel" and "DebugLayer" have been renamed 10993"AcpiDbgLevel" and "AcpiDbgLayer" respectively. 10994 10995All other globals within the subsystem are now prefixed with 10996"AcpiGbl_" Internal procedures within the subsystem are now 10997prefixed with "Acpi" (with only a few exceptions). The original 10998two-letter abbreviation for the subcomponent remains after "Acpi" 10999- for example, CmCallocate became AcpiCmCallocate. 11000 11001Added a source code translation/conversion utility. Used to 11002generate the Linux source code, it can be modified to generate 11003other types of source as well. Can also be used to cleanup 11004existing source by removing extraneous spaces and blank lines. 11005Found in tools/acpisrc/* 11006 11007OsdUnMapMemory was renamed to OsdUnmapMemory and then 11008AcpiOsUnmapMemory. (UnMap became Unmap). 11009 11010A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore. 11011When set to one, this indicates that the caller wants to use the 11012 11013semaphore as a mutex, not a counting semaphore. ACPI CA uses 11014both types. However, implementers of this call may want to use 11015different OS primitives depending on the type of semaphore 11016requested. For example, some operating systems provide separate 11017 11018"mutex" and "semaphore" interfaces - where the mutex interface is 11019much faster because it doesn't have all the overhead of a full 11020semaphore implementation. 11021 11022Fixed a deadlock problem where a method that accesses the PCI 11023address space can block forever if it is the first access to the 11024space. 11025 11026------------------------------------------- 11027Summary of changes for this label: 06_02_00 11028 11029Support for environments that cannot handle unaligned data 11030accesses (e.g. firmware and OS environments devoid of alignment 11031handler technology namely SAL/EFI and the IA-64 Linux kernel) has 11032been added (via configurable macros) in these three areas: - 11033Transfer of data from the raw AML byte stream is done via byte 11034moves instead of word/dword/qword moves. - External objects are 11035aligned within the user buffer, including package elements (sub- 11036objects). - Conversion of name strings to UINT32 Acpi Names is now 11037done byte-wise. 11038 11039The Store operator was modified to mimic Microsoft's 11040implementation when storing to a Buffer Field. 11041 11042Added a check of the BM_STS bit before entering C3. 11043 11044The methods subdirectory has been obsoleted and removed. A new 11045file, cmeval.c subsumes the functionality. 11046 11047A 16-bit (DOS) version of AcpiExec has been developed. The 11048makefile is under the acpiexec directory. 11049