changes.txt revision 231852
1---------------------------------------- 215 February 2012. Summary of changes for version 20120215: 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 9There have been some major changes to the sleep/wake support code, as 10described below (a - e). 11 12a) The AcpiLeaveSleepState has been split into two interfaces, similar to 13AcpiEnterSleepStatePrep and AcpiEnterSleepState. The new interface is 14AcpiLeaveSleepStatePrep. This allows the host to perform actions between the 15time the _BFS method is called and the _WAK method is called. NOTE: all hosts 16must update their wake/resume code or else sleep/wake will not work properly. 17Rafael Wysocki. 18 19b) In AcpiLeaveSleepState, now enable all runtime GPEs before calling the _WAK 20method. Some machines require that the GPEs are enabled before the _WAK method 21is executed. Thomas Renninger. 22 23c) In AcpiLeaveSleepState, now always clear the WAK_STS (wake status) bit. 24Some BIOS code assumes that WAK_STS will be cleared on resume and use it to 25determine whether the system is rebooting or resuming. Matthew Garrett. 26 27d) Move the invocations of _GTS (Going To Sleep) and _BFS (Back From Sleep) to 28match the ACPI specification requirement. Rafael Wysocki. 29 30e) Implemented full support for the ACPI 5.0 SleepStatus and SleepControl 31registers within the V5 FADT. This support adds two new files: 32hardware/hwesleep.c implements the support for the new registers. Moved all 33sleep/wake external interfaces to hardware/hwxfsleep.c. 34 35 36Added a new OSL interface for ACPI table overrides, 37AcpiOsPhysicalTableOverride. This interface allows the host to override a 38table via a physical address, instead of the logical address required by 39AcpiOsTableOverride. This simplifies the host implementation. Initial 40implementation by Thomas Renninger. The ACPICA implementation creates a single 41shared function for table overrides that attempts both a logical and a 42physical override. 43 44Expanded the OSL memory read/write interfaces to 64-bit data 45(AcpiOsReadMemory, AcpiOsWriteMemory.) This enables full 64-bit memory 46transfer support for GAS register structures passed to AcpiRead and AcpiWrite. 47 48Implemented the ACPI_REDUCED_HARDWARE option to allow the creation of a custom 49build of ACPICA that supports only the ACPI 5.0 reduced hardware (SoC) model. 50See the ACPICA reference for details. ACPICA BZ 942. This option removes about 5110% of the code and 5% of the static data, and the following hardware ACPI 52features become unavailable: 53 PM Event and Control registers 54 SCI interrupt (and handler) 55 Fixed Events 56 General Purpose Events (GPEs) 57 Global Lock 58 ACPI PM timer 59 FACS table (Waking vectors and Global Lock) 60 61Updated the unix tarball directory structure to match the ACPICA git source 62tree. This ensures that the generic unix makefiles work properly (in 63generate/unix). Also updated the Linux makefiles to match. ACPICA BZ 867. 64 65Updated the return value of the _REV predefined method to integer value 5 to 66reflect ACPI 5.0 support. 67 68Moved the external ACPI PM timer interface prototypes to the public acpixf.h 69file where they belong. 70 71Example Code and Data Size: These are the sizes for the OS-independent 72acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug 73version of the code includes the debug output trace mechanism and has a much 74larger code and data size. 75 76 Previous Release: 77 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total 78 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total 79 Current Release: 80 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total 81 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 82 83 842) iASL Compiler/Disassembler and Tools: 85 86Disassembler: Fixed a problem with the new ACPI 5.0 serial resource 87descriptors (I2C, SPI, UART) where the resource produce/consumer bit was 88incorrectly displayed. 89 90AcpiHelp: Add display of ACPI/PNP device IDs that are defined in the ACPI 91specification. 92 93---------------------------------------- 9411 January 2012. Summary of changes for version 20120111: 95 96This release is available at www.acpica.org/downloads. 97The ACPI 5.0 specification is available at www.acpi.info. 98 991) ACPICA Core Subsystem: 100 101Implemented a new mechanism to allow host device drivers to check for address 102range conflicts with ACPI Operation Regions. Both SystemMemory and SystemIO 103address spaces are supported. A new external interface, AcpiCheckAddressRange, 104allows drivers to check an address range against the ACPI namespace. See the 105ACPICA reference for additional details. Adds one new file, 106utilities/utaddress.c. Lin Ming, Bob Moore. 107 108Fixed several issues with the ACPI 5.0 FADT support: Add the sleep Control and 109Status registers, update the ACPI 5.0 flags, and update internal data 110structures to handle an FADT larger than 256 bytes. The size of the ACPI 5.0 111FADT is 268 bytes. 112 113Updated all ACPICA copyrights and signons to 2012. Added the 2012 copyright to 114all module headers and signons, including the standard Linux header. This 115affects virtually every file in the ACPICA core subsystem, iASL compiler, and 116all ACPICA utilities. 117 118Example Code and Data Size: These are the sizes for the OS-independent 119acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug 120version of the code includes the debug output trace mechanism and has a much 121larger code and data size. 122 123 Previous Release: 124 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total 125 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total 126 Current Release: 127 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total 128 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total 129 130 1312) iASL Compiler/Disassembler and Tools: 132 133Disassembler: fixed a problem with the automatic resource tag generation 134support. Fixes a problem where the resource tags are inadvertently not 135constructed if the table being disassembled contains external references to 136control methods. Moved the actual construction of the tags to after the final 137namespace is constructed (after 2nd parse is invoked due to external control 138method references.) ACPICA BZ 941. 139 140Table Compiler: Make all "generic" operators caseless. These are the operators 141like UINT8, String, etc. Making these caseless improves ease-of-use. ACPICA BZ 142934. 143 144---------------------------------------- 14523 November 2011. Summary of changes for version 20111123: 146 1470) ACPI 5.0 Support: 148 149This release contains full support for the ACPI 5.0 specification, as 150summarized below. 151 152Reduced Hardware Support: 153------------------------- 154 155This support allows for ACPI systems without the usual ACPI hardware. This 156support is enabled by a flag in the revision 5 FADT. If it is set, ACPICA will 157not attempt to initialize or use any of the usual ACPI hardware. Note, when 158this flag is set, all of the following ACPI hardware is assumed to be not 159present and is not initialized or accessed: 160 161 General Purpose Events (GPEs) 162 Fixed Events (PM1a/PM1b and PM Control) 163 Power Management Timer and Console Buttons (power/sleep) 164 Real-time Clock Alarm 165 Global Lock 166 System Control Interrupt (SCI) 167 The FACS is assumed to be non-existent 168 169ACPI Tables: 170------------ 171 172All new tables and updates to existing tables are fully supported in the 173ACPICA headers (for use by device drivers), the disassembler, and the iASL 174Data Table Compiler. ACPI 5.0 defines these new tables: 175 176 BGRT /* Boot Graphics Resource Table */ 177 DRTM /* Dynamic Root of Trust for Measurement table */ 178 FPDT /* Firmware Performance Data Table */ 179 GTDT /* Generic Timer Description Table */ 180 MPST /* Memory Power State Table */ 181 PCCT /* Platform Communications Channel Table */ 182 PMTT /* Platform Memory Topology Table */ 183 RASF /* RAS Feature table */ 184 185Operation Regions/SpaceIDs: 186--------------------------- 187 188All new operation regions are fully supported by the iASL compiler, the 189disassembler, and the ACPICA runtime code (for dispatch to region handlers.) 190The new operation region Space IDs are: 191 192 GeneralPurposeIo 193 GenericSerialBus 194 195Resource Descriptors: 196--------------------- 197 198All new ASL resource descriptors are fully supported by the iASL compiler, the 199ASL/AML disassembler, and the ACPICA runtime Resource Manager code (including 200all new predefined resource tags). New descriptors are: 201 202 FixedDma 203 GpioIo 204 GpioInt 205 I2cSerialBus 206 SpiSerialBus 207 UartSerialBus 208 209ASL/AML Operators, New and Modified: 210------------------------------------ 211 212One new operator is added, the Connection operator, which is used to associate 213a GeneralPurposeIo or GenericSerialBus resource descriptor with individual 214field objects within an operation region. Several new protocols are associated 215with the AccessAs operator. All are fully supported by the iASL compiler, 216disassembler, and runtime ACPICA AML interpreter: 217 218 Connection // Declare Field Connection attributes 219 AccessAs: AttribBytes (n) // Read/Write N-Bytes Protocol 220 AccessAs: AttribRawBytes (n) // Raw Read/Write N-Bytes Protocol 221 AccessAs: AttribRawProcessBytes (n) // Raw Process Call Protocol 222 RawDataBuffer // Data type for Vendor Data fields 223 224Predefined ASL/AML Objects: 225--------------------------- 226 227All new predefined objects/control-methods are supported by the iASL compiler 228and the ACPICA runtime validation/repair (arguments and return values.) New 229predefined names include the following: 230 231Standard Predefined Names (Objects or Control Methods): 232 _AEI, _CLS, _CPC, _CWS, _DEP, 233 _DLM, _EVT, _GCP, _CRT, _GWS, 234 _HRV, _PRE, _PSE, _SRT, _SUB. 235 236Resource Tags (Names used to access individual fields within resource 237descriptors): 238 _DBT, _DPL, _DRS, _END, _FLC, 239 _IOR, _LIN, _MOD, _PAR, _PHA, 240 _PIN, _PPI, _POL, _RXL, _SLV, 241 _SPE, _STB, _TXL, _VEN. 242 243ACPICA External Interfaces: 244--------------------------- 245 246Several new interfaces have been defined for use by ACPI-related device 247drivers and other host OS services: 248 249AcpiAcquireMutex and AcpiReleaseMutex: These interfaces allow the host OS to 250acquire and release AML mutexes that are defined in the DSDT/SSDT tables 251provided by the BIOS. They are intended to be used in conjunction with the 252ACPI 5.0 _DLM (Device Lock Method) in order to provide transaction-level 253mutual exclusion with the AML code/interpreter. 254 255AcpiGetEventResources: Returns the (formatted) resource descriptors as defined 256by the ACPI 5.0 _AEI object (ACPI Event Information). This object provides 257resource descriptors associated with hardware-reduced platform events, similar 258to the AcpiGetCurrentResources interface. 259 260Operation Region Handlers: For General Purpose IO and Generic Serial Bus 261operation regions, information about the Connection() object and any optional 262length information is passed to the region handler within the Context 263parameter. 264 265AcpiBufferToResource: This interface converts a raw AML buffer containing a 266resource template or resource descriptor to the ACPI_RESOURCE internal format 267suitable for use by device drivers. Can be used by an operation region handler 268to convert the Connection() buffer object into a ACPI_RESOURCE. 269 270Miscellaneous/Tools/TestSuites: 271------------------------------- 272 273Support for extended _HID names (Four alpha characters instead of three). 274Support for ACPI 5.0 features in the AcpiExec and AcpiHelp utilities. 275Support for ACPI 5.0 features in the ASLTS test suite. 276Fully updated documentation (ACPICA and iASL reference documents.) 277 278ACPI Table Definition Language: 279------------------------------- 280 281Support for this language was implemented and released as a subsystem of the 282iASL compiler in 2010. (See the iASL compiler User Guide.) 283 284 285Non-ACPI 5.0 changes for this release: 286-------------------------------------- 287 2881) ACPICA Core Subsystem: 289 290Fix a problem with operation region declarations where a failure can occur if 291the region name and an argument that evaluates to an object (such as the 292region address) are in different namespace scopes. Lin Ming, ACPICA BZ 937. 293 294Do not abort an ACPI table load if an invalid space ID is found within. This 295will be caught later if the offending method is executed. ACPICA BZ 925. 296 297Fixed an issue with the FFixedHW space ID where the ID was not always 298recognized properly (Both ACPICA and iASL). ACPICA BZ 926. 299 300Fixed a problem with the 32-bit generation of the unix-specific OSL 301(osunixxf.c). Lin Ming, ACPICA BZ 936. 302 303Several changes made to enable generation with the GCC 4.6 compiler. ACPICA BZ 304935. 305 306New error messages: Unsupported I/O requests (not 8/16/32 bit), and Index/Bank 307field registers out-of-range. 308 3092) iASL Compiler/Disassembler and Tools: 310 311iASL: Implemented the __PATH__ operator, which returns the full pathname of 312the current source file. 313 314AcpiHelp: Automatically display expanded keyword information for all ASL 315operators. 316 317Debugger: Add "Template" command to disassemble/dump resource template 318buffers. 319 320Added a new master script to generate and execute the ASLTS test suite. 321Automatically handles 32- and 64-bit generation. See tests/aslts.sh 322 323iASL: Fix problem with listing generation during processing of the Switch() 324operator where AML listing was disabled until the entire Switch block was 325completed. 326 327iASL: Improve support for semicolon statement terminators. Fix "invalid 328character" message for some cases when the semicolon is used. Semicolons are 329now allowed after every <Term> grammar element. ACPICA BZ 927. 330 331iASL: Fixed some possible aliasing warnings during generation. ACPICA BZ 923. 332 333Disassembler: Fix problem with disassembly of the DataTableRegion operator 334where an inadvertent "Unhandled deferred opcode" message could be generated. 335 3363) Example Code and Data Size 337 338These are the sizes for the OS-independent acpica.lib produced by the 339Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code 340includes the debug output trace mechanism and has a much larger code and data 341size. 342 343 Previous Release: 344 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 345 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 346 Current Release: 347 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total 348 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total 349 350---------------------------------------- 35122 September 2011. Summary of changes for version 20110922: 352 3530) ACPI 5.0 News: 354 355Support for ACPI 5.0 in ACPICA has been underway for several months and will 356be released at the same time that ACPI 5.0 is officially released. 357 358The ACPI 5.0 specification is on track for release in the next few months. 359 3601) ACPICA Core Subsystem: 361 362Fixed a problem where the maximum sleep time for the Sleep() operator was 363intended to be limited to two seconds, but was inadvertently limited to 20 364seconds instead. 365 366Linux and Unix makefiles: Added header file dependencies to ensure correct 367generation of ACPICA core code and utilities. Also simplified the makefiles 368considerably through the use of the vpath variable to specify search paths. 369ACPICA BZ 924. 370 3712) iASL Compiler/Disassembler and Tools: 372 373iASL: Implemented support to check the access length for all fields created to 374access named Resource Descriptor fields. For example, if a resource field is 375defined to be two bits, a warning is issued if a CreateXxxxField() is used 376with an incorrect bit length. This is implemented for all current resource 377descriptor names. ACPICA BZ 930. 378 379Disassembler: Fixed a byte ordering problem with the output of 24-bit and 56- 380bit integers. 381 382iASL: Fixed a couple of issues associated with variable-length package 383objects. 1) properly handle constants like One, Ones, Zero -- do not make a 384VAR_PACKAGE when these are used as a package length. 2) Allow the VAR_PACKAGE 385opcode (in addition to PACKAGE) when validating object types for predefined 386names. 387 388iASL: Emit statistics for all output files (instead of just the ASL input and 389AML output). Includes listings, hex files, etc. 390 391iASL: Added -G option to the table compiler to allow the compilation of custom 392ACPI tables. The only part of a table that is required is the standard 36-byte 393ACPI header. 394 395AcpiXtract: Ported to the standard ACPICA environment (with ACPICA headers), 396which also adds correct 64-bit support. Also, now all output filenames are 397completely lower case. 398 399AcpiExec: Ignore any non-AML tables (tables other than DSDT or SSDT) when 400loading table files. A warning is issued for any such tables. The only 401exception is an FADT. This also fixes a possible fault when attempting to load 402non-AML tables. ACPICA BZ 932. 403 404AcpiHelp: Added the AccessAs and Offset operators. Fixed a problem where a 405missing table terminator could cause a fault when using the -p option. 406 407AcpiSrc: Fixed a possible divide-by-zero fault when generating file 408statistics. 409 4103) Example Code and Data Size 411 412These are the sizes for the OS-independent acpica.lib produced by the 413Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code 414includes the debug output trace mechanism and has a much larger code and data 415size. 416 417 Previous Release (VC 9.0): 418 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 419 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 420 Current Release (VC 9.0): 421 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 422 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 423 424 425---------------------------------------- 42623 June 2011. Summary of changes for version 20110623: 427 4281) ACPI CA Core Subsystem: 429 430Updated the predefined name repair mechanism to not attempt repair of a _TSS 431return object if a _PSS object is present. We can only sort the _TSS return 432package if there is no _PSS within the same scope. This is because if _PSS is 433present, the ACPI specification dictates that the _TSS Power Dissipation field 434is to be ignored, and therefore some BIOSs leave garbage values in the _TSS 435Power field(s). In this case, it is best to just return the _TSS package as- 436is. Reported by, and fixed with assistance from Fenghua Yu. 437 438Added an option to globally disable the control method return value validation 439and repair. This runtime option can be used to disable return value repair if 440this is causing a problem on a particular machine. Also added an option to 441AcpiExec (-dr) to set this disable flag. 442 443All makefiles and project files: Major changes to improve generation of ACPICA 444tools. ACPICA BZ 912: 445 Reduce default optimization levels to improve compatibility 446 For Linux, add strict-aliasing=0 for gcc 4 447 Cleanup and simplify use of command line defines 448 Cleanup multithread library support 449 Improve usage messages 450 451Linux-specific header: update handling of THREAD_ID and pthread. For the 32- 452bit case, improve casting to eliminate possible warnings, especially with the 453acpica tools. 454 455Example Code and Data Size: These are the sizes for the OS-independent 456acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug 457version of the code includes the debug output trace mechanism and has a much 458larger code and data size. 459 460 Previous Release (VC 9.0): 461 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total 462 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 463 Current Release (VC 9.0): 464 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 465 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 466 4672) iASL Compiler/Disassembler and Tools: 468 469With this release, a new utility named "acpihelp" has been added to the ACPICA 470package. This utility summarizes the ACPI specification chapters for the ASL 471and AML languages. It generates under Linux/Unix as well as Windows, and 472provides the following functionality: 473 Find/display ASL operator(s) -- with description and syntax. 474 Find/display ASL keyword(s) -- with exact spelling and descriptions. 475 Find/display ACPI predefined name(s) -- with description, number 476 of arguments, and the return value data type. 477 Find/display AML opcode name(s) -- with opcode, arguments, and grammar. 478 Decode/display AML opcode -- with opcode name, arguments, and grammar. 479 480Service Layers: Make multi-thread support configurable. Conditionally compile 481the multi-thread support so that threading libraries will not be linked if not 482necessary. The only tool that requires multi-thread support is AcpiExec. 483 484iASL: Update yyerrror/AslCompilerError for "const" errors. Newer versions of 485Bison appear to want the interface to yyerror to be a const char * (or at 486least this is a problem when generating iASL on some systems.) ACPICA BZ 923 487Pierre Lejeune. 488 489Tools: Fix for systems where O_BINARY is not defined. Only used for Windows 490versions of the tools. 491 492---------------------------------------- 49327 May 2011. Summary of changes for version 20110527: 494 4951) ACPI CA Core Subsystem: 496 497ASL Load() operator: Reinstate most restrictions on the incoming ACPI table 498signature. Now, only allow SSDT, OEMx, and a null signature. History: 499 1) Originally, we checked the table signature for "SSDT" or "PSDT". 500 (PSDT is now obsolete.) 501 2) We added support for OEMx tables, signature "OEM" plus a fourth 502 "don't care" character. 503 3) Valid tables were encountered with a null signature, so we just 504 gave up on validating the signature, (05/2008). 505 4) We encountered non-AML tables such as the MADT, which caused 506 interpreter errors and kernel faults. So now, we once again allow 507 only SSDT, OEMx, and now, also a null signature. (05/2011). 508 509Added the missing _TDL predefined name to the global name list in order to 510enable validation. Affects both the core ACPICA code and the iASL compiler. 511 512Example Code and Data Size: These are the sizes for the OS-independent 513acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug 514version of the code includes the debug output trace mechanism and has a much 515larger code and data size. 516 517 Previous Release (VC 9.0): 518 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total 519 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total 520 Current Release (VC 9.0): 521 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total 522 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 523 5242) iASL Compiler/Disassembler and Tools: 525 526Debugger/AcpiExec: Implemented support for "complex" method arguments on the 527debugger command line. This adds support beyond simple integers -- including 528Strings, Buffers, and Packages. Includes support for nested packages. 529Increased the default command line buffer size to accommodate these arguments. 530See the ACPICA reference for details and syntax. ACPICA BZ 917. 531 532Debugger/AcpiExec: Implemented support for "default" method arguments for the 533Execute/Debug command. Now, the debugger will always invoke a control method 534with the required number of arguments -- even if the command line specifies 535none or insufficient arguments. It uses default integer values for any missing 536arguments. Also fixes a bug where only six method arguments maximum were 537supported instead of the required seven. 538 539Debugger/AcpiExec: Add a maximum buffer length parameter to AcpiOsGetLine and 540also return status in order to prevent buffer overruns. See the ACPICA 541reference for details and syntax. ACPICA BZ 921 542 543iASL: Cleaned up support for Berkeley yacc. A general cleanup of code and 544makefiles to simplify support for the two different but similar parser 545generators, bison and yacc. 546 547Updated the generic unix makefile for gcc 4. The default gcc version is now 548expected to be 4 or greater, since options specific to gcc 4 are used. 549 550---------------------------------------- 55113 April 2011. Summary of changes for version 20110413: 552 5531) ACPI CA Core Subsystem: 554 555Implemented support to execute a so-called "orphan" _REG method under the EC 556device. This change will force the execution of a _REG method underneath the 557EC 558device even if there is no corresponding operation region of type 559EmbeddedControl. Fixes a problem seen on some machines and apparently is 560compatible with Windows behavior. ACPICA BZ 875. 561 562Added more predefined methods that are eligible for automatic NULL package 563element removal. This change adds another group of predefined names to the 564list 565of names that can be repaired by having NULL package elements dynamically 566removed. This group are those methods that return a single variable-length 567package containing simple data types such as integers, buffers, strings. This 568includes: _ALx, _BCL, _CID,_ DOD, _EDL, _FIX, _PCL, _PLD, _PMD, _PRx, _PSL, 569_Sx, 570and _TZD. ACPICA BZ 914. 571 572Split and segregated all internal global lock functions to a new file, 573evglock.c. 574 575Updated internal address SpaceID for DataTable regions. Moved this internal 576space 577id in preparation for ACPI 5.0 changes that will include some new space IDs. 578This 579change should not affect user/host code. 580 581Example Code and Data Size: These are the sizes for the OS-independent 582acpica.lib 583produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug version of 584the code includes the debug output trace mechanism and has a much larger code 585and 586data size. 587 588 Previous Release (VC 9.0): 589 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total 590 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total 591 Current Release (VC 9.0): 592 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total 593 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total 594 5952) iASL Compiler/Disassembler and Tools: 596 597iASL/DTC: Major update for new grammar features. Allow generic data types in 598custom ACPI tables. Field names are now optional. Any line can be split to 599multiple lines using the continuation char (\). Large buffers now use line- 600continuation character(s) and no colon on the continuation lines. See the 601grammar 602update in the iASL compiler reference. ACPI BZ 910,911. Lin Ming, Bob Moore. 603 604iASL: Mark ASL "Return()" and the simple "Return" as "Null" return statements. 605Since the parser stuffs a "zero" as the return value for these statements (due 606to 607the underlying AML grammar), they were seen as "return with value" by the iASL 608semantic checking. They are now seen correctly as "null" return statements. 609 610iASL: Check if a_REG declaration has a corresponding Operation Region. Adds a 611check for each _REG to ensure that there is in fact a corresponding operation 612region declaration in the same scope. If not, the _REG method is not very 613useful 614since it probably won't be executed. ACPICA BZ 915. 615 616iASL/DTC: Finish support for expression evaluation. Added a new expression 617parser 618that implements c-style operator precedence and parenthesization. ACPICA 619bugzilla 620908. 621 622Disassembler/DTC: Remove support for () and <> style comments in data tables. 623Now 624that DTC has full expression support, we don't want to have comment strings 625that 626start with a parentheses or a less-than symbol. Now, only the standard /* and 627// 628comments are supported, as well as the bracket [] comments. 629 630AcpiXtract: Fix for RSDP and dynamic SSDT extraction. These tables have 631"unusual" 632headers in the acpidump file. Update the header validation to support these 633tables. Problem introduced in previous AcpiXtract version in the change to 634support "wrong checksum" error messages emitted by acpidump utility. 635 636iASL: Add a * option to generate all template files (as a synonym for ALL) as 637in 638"iasl -T *" or "iasl -T ALL". 639 640iASL/DTC: Do not abort compiler on fatal errors. We do not want to completely 641abort the compiler on "fatal" errors, simply should abort the current compile. 642This allows multiple compiles with a single (possibly wildcard) compiler 643invocation. 644 645---------------------------------------- 64616 March 2011. Summary of changes for version 20110316: 647 6481) ACPI CA Core Subsystem: 649 650Fixed a problem caused by a _PRW method appearing at the namespace root scope 651during the setup of wake GPEs. A fault could occur if a _PRW directly under 652the 653root object was passed to the AcpiSetupGpeForWake interface. Lin Ming. 654 655Implemented support for "spurious" Global Lock interrupts. On some systems, a 656global lock interrupt can occur without the pending flag being set. Upon a GL 657interrupt, we now ensure that a thread is actually waiting for the lock before 658signaling GL availability. Rafael Wysocki, Bob Moore. 659 660Example Code and Data Size: These are the sizes for the OS-independent 661acpica.lib 662produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug version of 663the code includes the debug output trace mechanism and has a much larger code 664and 665data size. 666 667 Previous Release (VC 9.0): 668 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 669 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 670 Current Release (VC 9.0): 671 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total 672 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total 673 6742) iASL Compiler/Disassembler and Tools: 675 676Implemented full support for the "SLIC" ACPI table. Includes support in the 677header files, disassembler, table compiler, and template generator. Bob Moore, 678Lin Ming. 679 680AcpiXtract: Correctly handle embedded comments and messages from AcpiDump. 681Apparently some or all versions of acpidump will occasionally emit a comment 682like 683"Wrong checksum", etc., into the dump file. This was causing problems for 684AcpiXtract. ACPICA BZ 905. 685 686iASL: Fix the Linux makefile by removing an inadvertent double file inclusion. 687ACPICA BZ 913. 688 689AcpiExec: Update installation of operation region handlers. Install one 690handler 691for a user-defined address space. This is used by the ASL test suite (ASLTS). 692 693---------------------------------------- 69411 February 2011. Summary of changes for version 20110211: 695 6961) ACPI CA Core Subsystem: 697 698Added a mechanism to defer _REG methods for some early-installed handlers. 699Most user handlers should be installed before call to AcpiEnableSubsystem. 700However, Event handlers and region handlers should be installed after 701AcpiInitializeObjects. Override handlers for the "default" regions should be 702installed early, however. This change executes all _REG methods for the 703default regions (Memory/IO/PCI/DataTable) simultaneously to prevent any 704chicken/egg issues between them. ACPICA BZ 848. 705 706Implemented an optimization for GPE detection. This optimization will simply 707ignore GPE registers that contain no enabled GPEs -- there is no need to 708read the register since this information is available internally. This 709becomes more important on machines with a large GPE space. ACPICA bugzilla 710884. Lin Ming. Suggestion from Joe Liu. 711 712Removed all use of the highly unreliable FADT revision field. The revision 713number in the FADT has been found to be completely unreliable and cannot be 714trusted. Only the actual table length can be used to infer the version. This 715change updates the ACPICA core and the disassembler so that both no longer 716even look at the FADT version and instead depend solely upon the FADT 717length. 718 719Fix an unresolved name issue for the no-debug and no-error-message source 720generation cases. The _AcpiModuleName was left undefined in these cases, but 721it is actually needed as a parameter to some interfaces. Define 722_AcpiModuleName as a null string in these cases. ACPICA Bugzilla 888. 723 724Split several large files (makefiles and project files updated) 725 utglobal.c -> utdecode.c 726 dbcomds.c -> dbmethod.c dbnames.c 727 dsopcode.c -> dsargs.c dscontrol.c 728 dsload.c -> dsload2.c 729 aslanalyze.c -> aslbtypes.c aslwalks.c 730 731Example Code and Data Size: These are the sizes for the OS-independent 732acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 733debug version of the code includes the debug output trace mechanism and has 734a much larger code and data size. 735 736 Previous Release (VC 9.0): 737 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 738 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 739 Current Release (VC 9.0): 740 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 741 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 742 7432) iASL Compiler/Disassembler and Tools: 744 745iASL: Implemented the predefined macros __LINE__, __FILE__, and __DATE__. 746These are useful C-style macros with the standard definitions. ACPICA 747bugzilla 898. 748 749iASL/DTC: Added support for integer expressions and labels. Support for full 750expressions for all integer fields in all ACPI tables. Support for labels in 751"generic" portions of tables such as UEFI. See the iASL reference manual. 752 753Debugger: Added a command to display the status of global handlers. The 754"handlers" command will display op region, fixed event, and miscellaneous 755global handlers. installation status -- and for op regions, whether default 756or user-installed handler will be used. 757 758iASL: Warn if reserved method incorrectly returns a value. Many predefined 759names are defined such that they do not return a value. If implemented as a 760method, issue a warning if such a name explicitly returns a value. ACPICA 761Bugzilla 855. 762 763iASL: Added detection of GPE method name conflicts. Detects a conflict where 764there are two GPE methods of the form _Lxy and _Exy in the same scope. (For 765example, _L1D and _E1D in the same scope.) ACPICA bugzilla 848. 766 767iASL/DTC: Fixed a couple input scanner issues with comments and line 768numbers. Comment remover could get confused and miss a comment ending. Fixed 769a problem with line counter maintenance. 770 771iASL/DTC: Reduced the severity of some errors from fatal to error. There is 772no need to abort on simple errors within a field definition. 773 774Debugger: Simplified the output of the help command. All help output now in 775a single screen, instead of help subcommands. ACPICA Bugzilla 897. 776 777---------------------------------------- 77812 January 2011. Summary of changes for version 20110112: 779 7801) ACPI CA Core Subsystem: 781 782Fixed a race condition between method execution and namespace walks that can 783possibly cause a fault. The problem was apparently introduced in version 78420100528 as a result of a performance optimization that reduces the number of 785namespace walks upon method exit by using the delete_namespace_subtree 786function instead of the delete_namespace_by_owner function used previously. 787Bug is a missing namespace lock in the delete_namespace_subtree function. 788dana.myers@oracle.com 789 790Fixed several issues and a possible fault with the automatic "serialized" 791method support. History: This support changes a method to "serialized" on the 792fly if the method generates an AE_ALREADY_EXISTS error, indicating the 793possibility that it cannot handle reentrancy. This fix repairs a couple of 794issues seen in the field, especially on machines with many cores: 795 796 1) Delete method children only upon the exit of the last thread, 797 so as to not delete objects out from under other running threads 798 (and possibly causing a fault.) 799 2) Set the "serialized" bit for the method only upon the exit of the 800 Last thread, so as to not cause deadlock when running threads 801 attempt to exit. 802 3) Cleanup the use of the AML "MethodFlags" and internal method flags 803 so that there is no longer any confusion between the two. 804 805 Lin Ming, Bob Moore. Reported by dana.myers@oracle.com. 806 807Debugger: Now lock the namespace for duration of a namespace dump. Prevents 808issues if the namespace is changing dynamically underneath the debugger. 809Especially affects temporary namespace nodes, since the debugger displays 810these also. 811 812Updated the ordering of include files. The ACPICA headers should appear 813before any compiler-specific headers (stdio.h, etc.) so that acenv.h can set 814any necessary compiler-specific defines, etc. Affects the ACPI-related tools 815and utilities. 816 817Updated all ACPICA copyrights and signons to 2011. Added the 2011 copyright 818to all module headers and signons, including the Linux header. This affects 819virtually every file in the ACPICA core subsystem, iASL compiler, and all 820utilities. 821 822Added project files for MS Visual Studio 2008 (VC++ 9.0). The original 823project files for VC++ 6.0 are now obsolete. New project files can be found 824under acpica/generate/msvc9. See acpica/generate/msvc9/readme.txt for 825details. 826 827Example Code and Data Size: These are the sizes for the OS-independent 828acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 829debug version of the code includes the debug output trace mechanism and has a 830much larger code and data size. 831 832 Previous Release (VC 6.0): 833 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total 834 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total 835 Current Release (VC 9.0): 836 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 837 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 838 8392) iASL Compiler/Disassembler and Tools: 840 841iASL: Added generic data types to the Data Table compiler. Add "generic" data 842types such as UINT32, String, Unicode, etc., to simplify the generation of 843platform-defined tables such as UEFI. Lin Ming. 844 845iASL: Added listing support for the Data Table Compiler. Adds listing support 846(-l) to display actual binary output for each line of input code. 847 848---------------------------------------- 84909 December 2010. Summary of changes for version 20101209: 850 8511) ACPI CA Core Subsystem: 852 853Completed the major overhaul of the GPE support code that was begun in July 8542010. Major features include: removal of _PRW execution in ACPICA (host 855executes _PRWs anyway), cleanup of "wake" GPE interfaces and processing, 856changes to existing interfaces, simplification of GPE handler operation, and 857a handful of new interfaces: 858 859 AcpiUpdateAllGpes 860 AcpiFinishGpe 861 AcpiSetupGpeForWake 862 AcpiSetGpeWakeMask 863 One new file, evxfgpe.c to consolidate all external GPE interfaces. 864 865See the ACPICA Programmer Reference for full details and programming 866information. See the new section 4.4 "General Purpose Event (GPE) Support" 867for a full overview, and section 8.7 "ACPI General Purpose Event Management" 868for programming details. ACPICA BZ 858,870,877. Matthew Garrett, Lin Ming, 869Bob Moore, Rafael Wysocki. 870 871Implemented a new GPE feature for Windows compatibility, the "Implicit Wake 872GPE Notify". This feature will automatically issue a Notify(2) on a device 873when a Wake GPE is received if there is no corresponding GPE method or 874handler. ACPICA BZ 870. 875 876Fixed a problem with the Scope() operator during table parse and load phase. 877During load phase (table load or method execution), the scope operator should 878not enter the target into the namespace. Instead, it should open a new scope 879at the target location. Linux BZ 19462, ACPICA BZ 882. 880 881Example Code and Data Size: These are the sizes for the OS-independent 882acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 883debug version of the code includes the debug output trace mechanism and has a 884much larger code and data size. 885 886 Previous Release: 887 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total 888 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total 889 Current Release: 890 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 891 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 892 8932) iASL Compiler/Disassembler and Tools: 894 895iASL: Relax the alphanumeric restriction on _CID strings. These strings are 896"bus-specific" per the ACPI specification, and therefore any characters are 897acceptable. The only checks that can be performed are for a null string and 898perhaps for a leading asterisk. ACPICA BZ 886. 899 900iASL: Fixed a problem where a syntax error that caused a premature EOF 901condition on the source file emitted a very confusing error message. The 902premature EOF is now detected correctly. ACPICA BZ 891. 903 904Disassembler: Decode the AccessSize within a Generic Address Structure (byte 905access, word access, etc.) Note, this field does not allow arbitrary bit 906access, the size is encoded as 1=byte, 2=word, 3=dword, and 4=qword. 907 908New: AcpiNames utility - Example namespace dump utility. Shows an example of 909ACPICA configuration for a minimal namespace dump utility. Uses table and 910namespace managers, but no AML interpreter. Does not add any functionality 911over AcpiExec, it is a subset of AcpiExec. The purpose is to show how to 912partition and configure ACPICA. ACPICA BZ 883. 913 914AML Debugger: Increased the debugger buffer size for method return objects. 915Was 4K, increased to 16K. Also enhanced error messages for debugger method 916execution, including the buffer overflow case. 917 918---------------------------------------- 91913 October 2010. Summary of changes for version 20101013: 920 9211) ACPI CA Core Subsystem: 922 923Added support to clear the PCIEXP_WAKE event. When clearing ACPI events, now 924clear the PCIEXP_WAKE_STS bit in the ACPI PM1 Status Register, via 925HwClearAcpiStatus. Original change from Colin King. ACPICA BZ 880. 926 927Changed the type of the predefined namespace object _TZ from ThermalZone to 928Device. This was found to be confusing to the host software that processes 929the various thermal zones, since _TZ is not really a ThermalZone. However, a 930Notify() can still be performed on it. ACPICA BZ 876. Suggestion from Rui 931Zhang. 932 933Added Windows Vista SP2 to the list of supported _OSI strings. The actual 934string is "Windows 2006 SP2". 935 936Eliminated duplicate code in AcpiUtExecute* functions. Now that the nsrepair 937code automatically repairs _HID-related strings, this type of code is no 938longer needed in Execute_HID, Execute_CID, and Execute_UID. ACPICA BZ 878. 939 940Example Code and Data Size: These are the sizes for the OS-independent 941acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 942debug version of the code includes the debug output trace mechanism and has a 943much larger code and data size. 944 945 Previous Release: 946 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 947 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 948 Current Release: 949 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 950 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 951 9522) iASL Compiler/Disassembler and Tools: 953 954iASL: Implemented additional compile-time validation for _HID strings. The 955non-hex prefix (such as "PNP" or "ACPI") must be uppercase, and the length of 956the string must be exactly seven or eight characters. For both _HID and _CID 957strings, all characters must be alphanumeric. ACPICA BZ 874. 958 959iASL: Allow certain "null" resource descriptors. Some BIOS code creates 960descriptors that are mostly or all zeros, with the expectation that they will 961be filled in at runtime. iASL now allows this as long as there is a "resource 962tag" (name) associated with the descriptor, which gives the ASL a handle 963needed to modify the descriptor. ACPICA BZ 873. 964 965Added single-thread support to the generic Unix application OSL. Primarily 966for iASL support, this change removes the use of semaphores in the single- 967threaded ACPICA tools/applications - increasing performance. The 968_MULTI_THREADED option was replaced by the (reverse) ACPI_SINGLE_THREADED 969option. ACPICA BZ 879. 970 971AcpiExec: several fixes for the 64-bit version. Adds XSDT support and support 972for 64-bit DSDT/FACS addresses in the FADT. Lin Ming. 973 974iASL: Moved all compiler messages to a new file, aslmessages.h. 975 976---------------------------------------- 97715 September 2010. Summary of changes for version 20100915: 978 9791) ACPI CA Core Subsystem: 980 981Removed the AcpiOsDerivePciId OSL interface. The various host implementations 982of this function were not OS-dependent and are now obsolete and can be 983removed from all host OSLs. This function has been replaced by 984AcpiHwDerivePciId, which is now part of the ACPICA core code. 985AcpiHwDerivePciId has been implemented without recursion. Adds one new 986module, hwpci.c. ACPICA BZ 857. 987 988Implemented a dynamic repair for _HID and _CID strings. The following 989problems are now repaired at runtime: 1) Remove a leading asterisk in the 990string, and 2) the entire string is uppercased. Both repairs are in 991accordance with the ACPI specification and will simplify host driver code. 992ACPICA BZ 871. 993 994The ACPI_THREAD_ID type is no longer configurable, internally it is now 995always UINT64. This simplifies the ACPICA code, especially any printf output. 996UINT64 is the only common data type for all thread_id types across all 997operating systems. It is now up to the host OSL to cast the native thread_id 998type to UINT64 before returning the value to ACPICA (via AcpiOsGetThreadId). 999Lin Ming, Bob Moore. 1000 1001Added the ACPI_INLINE type to enhance the ACPICA configuration. The "inline" 1002keyword is not standard across compilers, and this type allows inline to be 1003configured on a per-compiler basis. Lin Ming. 1004 1005Made the system global AcpiGbl_SystemAwakeAndRunning publically available. 1006Added an extern for this boolean in acpixf.h. Some hosts utilize this value 1007during suspend/restore operations. ACPICA BZ 869. 1008 1009All code that implements error/warning messages with the "ACPI:" prefix has 1010been moved to a new module, utxferror.c. 1011 1012The UINT64_OVERLAY was moved to utmath.c, which is the only module where it 1013is used. ACPICA BZ 829. Lin Ming, Bob Moore. 1014 1015Example Code and Data Size: These are the sizes for the OS-independent 1016acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1017debug version of the code includes the debug output trace mechanism and has a 1018much larger code and data size. 1019 1020 Previous Release: 1021 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total 1022 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total 1023 Current Release: 1024 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 1025 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 1026 10272) iASL Compiler/Disassembler and Tools: 1028 1029iASL/Disassembler: Write ACPI errors to stderr instead of the output file. 1030This keeps the output files free of random error messages that may originate 1031from within the namespace/interpreter code. Used this opportunity to merge 1032all ACPI:-style messages into a single new module, utxferror.c. ACPICA BZ 1033866. Lin Ming, Bob Moore. 1034 1035Tools: update some printfs for ansi warnings on size_t. Handle width change 1036of size_t on 32-bit versus 64-bit generations. Lin Ming. 1037 1038---------------------------------------- 103906 August 2010. Summary of changes for version 20100806: 1040 10411) ACPI CA Core Subsystem: 1042 1043Designed and implemented a new host interface to the _OSI support code. This 1044will allow the host to dynamically add or remove multiple _OSI strings, as 1045well as install an optional handler that is called for each _OSI invocation. 1046Also added a new AML debugger command, 'osi' to display and modify the global 1047_OSI string table, and test support in the AcpiExec utility. See the ACPICA 1048reference manual for full details. Lin Ming, Bob Moore. ACPICA BZ 836. 1049New Functions: 1050 AcpiInstallInterface - Add an _OSI string. 1051 AcpiRemoveInterface - Delete an _OSI string. 1052 AcpiInstallInterfaceHandler - Install optional _OSI handler. 1053Obsolete Functions: 1054 AcpiOsValidateInterface - no longer used. 1055New Files: 1056 source/components/utilities/utosi.c 1057 1058Re-introduced the support to enable multi-byte transfers for Embedded 1059Controller (EC) operation regions. A reported problem was found to be a bug 1060in the host OS, not in the multi-byte support. Previously, the maximum data 1061size passed to the EC operation region handler was a single byte. There are 1062often EC Fields larger than one byte that need to be transferred, and it is 1063useful for the EC driver to lock these as a single transaction. This change 1064enables single transfers larger than 8 bits. This effectively changes the 1065access to the EC space from ByteAcc to AnyAcc, and will probably require 1066changes to the host OS Embedded Controller driver to enable 16/32/64/256-bit 1067transfers in addition to 8-bit transfers. Alexey Starikovskiy, Lin Ming. 1068 1069Fixed a problem with the prototype for AcpiOsReadPciConfiguration. The 1070prototype in acpiosxf.h had the output value pointer as a (void *). 1071It should be a (UINT64 *). This may affect some host OSL code. 1072 1073Fixed a couple problems with the recently modified Linux makefiles for iASL 1074and AcpiExec. These new makefiles place the generated object files in the 1075local directory so that there can be no collisions between the files that are 1076shared between them that are compiled with different options. 1077 1078Example Code and Data Size: These are the sizes for the OS-independent 1079acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1080debug version of the code includes the debug output trace mechanism and has a 1081much larger code and data size. 1082 1083 Previous Release: 1084 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 1085 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total 1086 Current Release: 1087 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total 1088 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total 1089 10902) iASL Compiler/Disassembler and Tools: 1091 1092iASL/Disassembler: Added a new option (-da, "disassemble all") to load the 1093namespace from and disassemble an entire group of AML files. Useful for 1094loading all of the AML tables for a given machine (DSDT, SSDT1...SSDTn) and 1095disassembling with one simple command. ACPICA BZ 865. Lin Ming. 1096 1097iASL: Allow multiple invocations of -e option. This change allows multiple 1098uses of -e on the command line: "-e ssdt1.dat -e ssdt2.dat". ACPICA BZ 834. 1099Lin Ming. 1100 1101---------------------------------------- 110202 July 2010. Summary of changes for version 20100702: 1103 11041) ACPI CA Core Subsystem: 1105 1106Implemented several updates to the recently added GPE reference count 1107support. The model for "wake" GPEs is changing to give the host OS complete 1108control of these GPEs. Eventually, the ACPICA core will not execute any _PRW 1109methods, since the host already must execute them. Also, additional changes 1110were made to help ensure that the reference counts are kept in proper 1111synchronization with reality. Rafael J. Wysocki. 1112 11131) Ensure that GPEs are not enabled twice during initialization. 11142) Ensure that GPE enable masks stay in sync with the reference count. 11153) Do not inadvertently enable GPEs when writing GPE registers. 11164) Remove the internal wake reference counter and add new AcpiGpeWakeup 1117interface. This interface will set or clear individual GPEs for wakeup. 11185) Remove GpeType argument from AcpiEnable and AcpiDisable. These interfaces 1119are now used for "runtime" GPEs only. 1120 1121Changed the behavior of the GPE install/remove handler interfaces. The GPE is 1122no longer disabled during this process, as it was found to cause problems on 1123some machines. Rafael J. Wysocki. 1124 1125Reverted a change introduced in version 20100528 to enable Embedded 1126Controller multi-byte transfers. This change was found to cause problems with 1127Index Fields and possibly Bank Fields. It will be reintroduced when these 1128problems have been resolved. 1129 1130Fixed a problem with references to Alias objects within Package Objects. A 1131reference to an Alias within the definition of a Package was not always 1132resolved properly. Aliases to objects like Processors, Thermal zones, etc. 1133were resolved to the actual object instead of a reference to the object as it 1134should be. Package objects are only allowed to contain integer, string, 1135buffer, package, and reference objects. Redhat bugzilla 608648. 1136 1137Example Code and Data Size: These are the sizes for the OS-independent 1138acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1139debug version of the code includes the debug output trace mechanism and has a 1140much larger code and data size. 1141 1142 Previous Release: 1143 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 1144 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total 1145 Current Release: 1146 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 1147 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total 1148 11492) iASL Compiler/Disassembler and Tools: 1150 1151iASL: Implemented a new compiler subsystem to allow definition and 1152compilation of the non-AML ACPI tables such as FADT, MADT, SRAT, etc. These 1153are called "ACPI Data Tables", and the new compiler is the "Data Table 1154Compiler". This compiler is intended to simplify the existing error-prone 1155process of creating these tables for the BIOS, as well as allowing the 1156disassembly, modification, recompilation, and override of existing ACPI data 1157tables. See the iASL User Guide for detailed information. 1158 1159iASL: Implemented a new Template Generator option in support of the new Data 1160Table Compiler. This option will create examples of all known ACPI tables 1161that can be used as the basis for table development. See the iASL 1162documentation and the -T option. 1163 1164Disassembler and headers: Added support for the WDDT ACPI table (Watchdog 1165Descriptor Table). 1166 1167Updated the Linux makefiles for iASL and AcpiExec to place the generated 1168object files in the local directory so that there can be no collisions 1169between the shared files between them that are generated with different 1170options. 1171 1172Added support for Mac OS X in the Unix OSL used for iASL and AcpiExec. Use 1173the #define __APPLE__ to enable this support. 1174 1175---------------------------------------- 117628 May 2010. Summary of changes for version 20100528: 1177 1178Note: The ACPI 4.0a specification was released on April 5, 2010 and is 1179available at www.acpi.info. This is primarily an errata release. 1180 11811) ACPI CA Core Subsystem: 1182 1183Undefined ACPI tables: We are looking for the definitions for the following 1184ACPI tables that have been seen in the field: ATKG, IEIT, GSCI. 1185 1186Implemented support to enable multi-byte transfers for Embedded Controller 1187(EC) operation regions. Previously, the maximum data size passed to the EC 1188operation region handler was a single byte. There are often EC Fields larger 1189than one byte that need to be transferred, and it is useful for the EC driver 1190to lock these as a single transaction. This change enables single transfers 1191larger than 8 bits. This effectively changes the access to the EC space from 1192ByteAcc to AnyAcc, and will probably require changes to the host OS Embedded 1193Controller driver to enable 16/32/64/256-bit transfers in addition to 8-bit 1194transfers. Alexey Starikovskiy, Lin Ming 1195 1196Implemented a performance enhancement for namespace search and access. This 1197change enhances the performance of namespace searches and walks by adding a 1198backpointer to the parent in each namespace node. On large namespaces, this 1199change can improve overall ACPI performance by up to 9X. Adding a pointer to 1200each namespace node increases the overall size of the internal namespace by 1201about 5%, since each namespace entry usually consists of both a namespace 1202node and an ACPI operand object. However, this is the first growth of the 1203namespace in ten years. ACPICA bugzilla 817. Alexey Starikovskiy. 1204 1205Implemented a performance optimization that reduces the number of namespace 1206walks. On control method exit, only walk the namespace if the method is known 1207to have created namespace objects outside of its local scope. Previously, the 1208entire namespace was traversed on each control method exit. This change can 1209improve overall ACPI performance by up to 3X. Alexey Starikovskiy, Bob Moore. 1210 1211Added support to truncate I/O addresses to 16 bits for Windows compatibility. 1212Some ASL code has been seen in the field that inadvertently has bits set 1213above bit 15. This feature is optional and is enabled if the BIOS requests 1214any Windows OSI strings. It can also be enabled by the host OS. Matthew 1215Garrett, Bob Moore. 1216 1217Added support to limit the maximum time for the ASL Sleep() operator. To 1218prevent accidental deep sleeps, limit the maximum time that Sleep() will 1219actually sleep. Configurable, the default maximum is two seconds. ACPICA 1220bugzilla 854. 1221 1222Added run-time validation support for the _WDG and_WED Microsoft predefined 1223methods. These objects are defined by "Windows Instrumentation", and are not 1224part of the ACPI spec. ACPICA BZ 860. 1225 1226Expanded all statistic counters used during namespace and device 1227initialization from 16 to 32 bits in order to support very large namespaces. 1228 1229Replaced all instances of %d in printf format specifiers with %u since nearly 1230all integers in ACPICA are unsigned. 1231 1232Fixed the exception namestring for AE_WAKE_ONLY_GPE. Was incorrectly returned 1233as AE_NO_HANDLER. 1234 1235Example Code and Data Size: These are the sizes for the OS-independent 1236acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1237debug version of the code includes the debug output trace mechanism and has a 1238much larger code and data size. 1239 1240 Previous Release: 1241 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total 1242 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total 1243 Current Release: 1244 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 1245 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total 1246 12472) iASL Compiler/Disassembler and Tools: 1248 1249iASL: Added compiler support for the _WDG and_WED Microsoft predefined 1250methods. These objects are defined by "Windows Instrumentation", and are not 1251part of the ACPI spec. ACPICA BZ 860. 1252 1253AcpiExec: added option to disable the memory tracking mechanism. The -dt 1254option will disable the tracking mechanism, which improves performance 1255considerably. 1256 1257AcpiExec: Restructured the command line options into -d (disable) and -e 1258(enable) options. 1259 1260---------------------------------------- 126128 April 2010. Summary of changes for version 20100428: 1262 12631) ACPI CA Core Subsystem: 1264 1265Implemented GPE support for dynamically loaded ACPI tables. For all GPEs, 1266including FADT-based and GPE Block Devices, execute any _PRW methods in the 1267new table, and process any _Lxx/_Exx GPE methods in the new table. Any 1268runtime GPE that is referenced by an _Lxx/_Exx method in the new table is 1269immediately enabled. Handles the FADT-defined GPEs as well as GPE Block 1270Devices. Provides compatibility with other ACPI implementations. Two new 1271files added, evgpeinit.c and evgpeutil.c. ACPICA BZ 833. Lin Ming, Bob Moore. 1272 1273Fixed a regression introduced in version 20100331 within the table manager 1274where initial table loading could fail. This was introduced in the fix for 1275AcpiReallocateRootTable. Also, renamed some of fields in the table manager 1276data structures to clarify their meaning and use. 1277 1278Fixed a possible allocation overrun during internal object copy in 1279AcpiUtCopySimpleObject. The original code did not correctly handle the case 1280where the object to be copied was a namespace node. Lin Ming. ACPICA BZ 847. 1281 1282Updated the allocation dump routine, AcpiUtDumpAllocation and fixed a 1283possible access beyond end-of-allocation. Also, now fully validate descriptor 1284(size and type) before output. Lin Ming, Bob Moore. ACPICA BZ 847 1285 1286Example Code and Data Size: These are the sizes for the OS-independent 1287acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1288debug version of the code includes the debug output trace mechanism and has a 1289much larger code and data size. 1290 1291 Previous Release: 1292 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total 1293 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total 1294 Current Release: 1295 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total 1296 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total 1297 12982) iASL Compiler/Disassembler and Tools: 1299 1300iASL: Implemented Min/Max/Len/Gran validation for address resource 1301descriptors. This change implements validation for the address fields that 1302are common to all address-type resource descriptors. These checks are 1303implemented: Checks for valid Min/Max, length within the Min/Max window, 1304valid granularity, Min/Max a multiple of granularity, and _MIF/_MAF as per 1305table 6-40 in the ACPI 4.0a specification. Also split the large aslrestype1.c 1306and aslrestype2.c files into five new files. ACPICA BZ 840. 1307 1308iASL: Added support for the _Wxx predefined names. This support was missing 1309and these names were not recognized by the compiler as valid predefined 1310names. ACPICA BZ 851. 1311 1312iASL: Added an error for all predefined names that are defined to return no 1313value and thus must be implemented as Control Methods. These include all of 1314the _Lxx, _Exx, _Wxx, and _Qxx names, as well as some other miscellaneous 1315names such as _DIS, _INI, _IRC, _OFF, _ON, and _PSx. ACPICA BZ 850, 856. 1316 1317iASL: Implemented the -ts option to emit hex AML data in ASL format, as an 1318ASL Buffer. Allows ACPI tables to be easily included within ASL files, to be 1319dynamically loaded via the Load() operator. Also cleaned up output for the - 1320ta and -tc options. ACPICA BZ 853. 1321 1322Tests: Added a new file with examples of extended iASL error checking. 1323Demonstrates the advanced error checking ability of the iASL compiler. 1324Available at tests/misc/badcode.asl. 1325 1326---------------------------------------- 132731 March 2010. Summary of changes for version 20100331: 1328 13291) ACPI CA Core Subsystem: 1330 1331Completed a major update for the GPE support in order to improve support for 1332shared GPEs and to simplify both host OS and ACPICA code. Added a reference 1333count mechanism to support shared GPEs that require multiple device drivers. 1334Several external interfaces have changed. One external interface has been 1335removed. One new external interface was added. Most of the GPE external 1336interfaces now use the GPE spinlock instead of the events mutex (and the 1337Flags parameter for many GPE interfaces has been removed.) See the updated 1338ACPICA Programmer Reference for details. Matthew Garrett, Bob Moore, Rafael 1339Wysocki. ACPICA BZ 831. 1340 1341Changed: 1342 AcpiEnableGpe, AcpiDisableGpe, AcpiClearGpe, AcpiGetGpeStatus 1343Removed: 1344 AcpiSetGpeType 1345New: 1346 AcpiSetGpe 1347 1348Implemented write support for DataTable operation regions. These regions are 1349defined via the DataTableRegion() operator. Previously, only read support was 1350implemented. The ACPI specification allows DataTableRegions to be read/write, 1351however. 1352 1353Implemented a new subsystem option to force a copy of the DSDT to local 1354memory. Optionally copy the entire DSDT to local memory (instead of simply 1355mapping it.) There are some (albeit very rare) BIOSs that corrupt or replace 1356the original DSDT, creating the need for this option. Default is FALSE, do 1357not copy the DSDT. 1358 1359Implemented detection of a corrupted or replaced DSDT. This change adds 1360support to detect a DSDT that has been corrupted and/or replaced from outside 1361the OS (by firmware). This is typically catastrophic for the system, but has 1362been seen on some machines. Once this problem has been detected, the DSDT 1363copy option can be enabled via system configuration. Lin Ming, Bob Moore. 1364 1365Fixed two problems with AcpiReallocateRootTable during the root table copy. 1366When copying the root table to the new allocation, the length used was 1367incorrect. The new size was used instead of the current table size, meaning 1368too much data was copied. Also, the count of available slots for ACPI tables 1369was not set correctly. Alexey Starikovskiy, Bob Moore. 1370 1371Example Code and Data Size: These are the sizes for the OS-independent 1372acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1373debug version of the code includes the debug output trace mechanism and has a 1374much larger code and data size. 1375 1376 Previous Release: 1377 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total 1378 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total 1379 Current Release: 1380 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total 1381 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total 1382 13832) iASL Compiler/Disassembler and Tools: 1384 1385iASL: Implement limited typechecking for values returned from predefined 1386control methods. The type of any returned static (unnamed) object is now 1387validated. For example, Return(1). ACPICA BZ 786. 1388 1389iASL: Fixed a predefined name object verification regression. Fixes a problem 1390introduced in version 20100304. An error is incorrectly generated if a 1391predefined name is declared as a static named object with a value defined 1392using the keywords "Zero", "One", or "Ones". Lin Ming. 1393 1394iASL: Added Windows 7 support for the -g option (get local ACPI tables) by 1395reducing the requested registry access rights. ACPICA BZ 842. 1396 1397Disassembler: fixed a possible fault when generating External() statements. 1398Introduced in commit ae7d6fd: Properly handle externals with parent-prefix 1399(carat). Fixes a string length allocation calculation. Lin Ming. 1400 1401---------------------------------------- 140204 March 2010. Summary of changes for version 20100304: 1403 14041) ACPI CA Core Subsystem: 1405 1406Fixed a possible problem with the AML Mutex handling function 1407AcpiExReleaseMutex where the function could fault under the very rare 1408condition when the interpreter has blocked, the interpreter lock is released, 1409the interpreter is then reentered via the same thread, and attempts to 1410acquire an AML mutex that was previously acquired. FreeBSD report 140979. Lin 1411Ming. 1412 1413Implemented additional configuration support for the AML "Debug Object". 1414Output from the debug object can now be enabled via a global variable, 1415AcpiGbl_EnableAmlDebugObject. This will assist with remote machine debugging. 1416This debug output is now available in the release version of ACPICA instead 1417of just the debug version. Also, the entire debug output module can now be 1418configured out of the ACPICA build if desired. One new file added, 1419executer/exdebug.c. Lin Ming, Bob Moore. 1420 1421Added header support for the ACPI MCHI table (Management Controller Host 1422Interface Table). This table was added in ACPI 4.0, but the defining document 1423has only recently become available. 1424 1425Standardized output of integer values for ACPICA warnings/errors. Always use 14260x prefix for hex output, always use %u for unsigned integer decimal output. 1427Affects ACPI_INFO, ACPI_ERROR, ACPI_EXCEPTION, and ACPI_WARNING (about 400 1428invocations.) These invocations were converted from the original 1429ACPI_DEBUG_PRINT invocations and were not consistent. ACPICA BZ 835. 1430 1431Example Code and Data Size: These are the sizes for the OS-independent 1432acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1433debug version of the code includes the debug output trace mechanism and has a 1434much larger code and data size. 1435 1436 Previous Release: 1437 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total 1438 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total 1439 Current Release: 1440 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total 1441 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total 1442 14432) iASL Compiler/Disassembler and Tools: 1444 1445iASL: Implemented typechecking support for static (non-control method) 1446predefined named objects that are declared with the Name() operator. For 1447example, the type of this object is now validated to be of type Integer: 1448Name(_BBN, 1). This change migrates the compiler to using the core predefined 1449name table instead of maintaining a local version. Added a new file, 1450aslpredef.c. ACPICA BZ 832. 1451 1452Disassembler: Added support for the ACPI 4.0 MCHI table. 1453 1454---------------------------------------- 145521 January 2010. Summary of changes for version 20100121: 1456 14571) ACPI CA Core Subsystem: 1458 1459Added the 2010 copyright to all module headers and signons. This affects 1460virtually every file in the ACPICA core subsystem, the iASL compiler, the 1461tools/utilities, and the test suites. 1462 1463Implemented a change to the AcpiGetDevices interface to eliminate unnecessary 1464invocations of the _STA method. In the case where a specific _HID is 1465requested, do not run _STA until a _HID match is found. This eliminates 1466potentially dozens of _STA calls during a search for a particular device/HID, 1467which in turn can improve boot times. ACPICA BZ 828. Lin Ming. 1468 1469Implemented an additional repair for predefined method return values. Attempt 1470to repair unexpected NULL elements within returned Package objects. Create an 1471Integer of value zero, a NULL String, or a zero-length Buffer as appropriate. 1472ACPICA BZ 818. Lin Ming, Bob Moore. 1473 1474Removed the obsolete ACPI_INTEGER data type. This type was introduced as the 1475code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0 (with 147664-bit AML integers). It is now obsolete and this change removes it from the 1477ACPICA code base, replaced by UINT64. The original typedef has been retained 1478for now for compatibility with existing device driver code. ACPICA BZ 824. 1479 1480Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field in 1481the parse tree object. 1482 1483Added additional warning options for the gcc-4 generation. Updated the source 1484accordingly. This includes some code restructuring to eliminate unreachable 1485code, elimination of some gotos, elimination of unused return values, some 1486additional casting, and removal of redundant declarations. 1487 1488Example Code and Data Size: These are the sizes for the OS-independent 1489acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1490debug version of the code includes the debug output trace mechanism and has a 1491much larger code and data size. 1492 1493 Previous Release: 1494 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 1495 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 1496 Current Release: 1497 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total 1498 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total 1499 15002) iASL Compiler/Disassembler and Tools: 1501 1502No functional changes for this release. 1503 1504---------------------------------------- 150514 December 2009. Summary of changes for version 20091214: 1506 15071) ACPI CA Core Subsystem: 1508 1509Enhanced automatic data type conversions for predefined name repairs. This 1510change expands the automatic repairs/conversions for predefined name return 1511values to make Integers, Strings, and Buffers fully interchangeable. Also, a 1512Buffer can be converted to a Package of Integers if necessary. The nsrepair.c 1513module was completely restructured. Lin Ming, Bob Moore. 1514 1515Implemented automatic removal of null package elements during predefined name 1516repairs. This change will automatically remove embedded and trailing NULL 1517package elements from returned package objects that are defined to contain a 1518variable number of sub-packages. The driver is then presented with a package 1519with no null elements to deal with. ACPICA BZ 819. 1520 1521Implemented a repair for the predefined _FDE and _GTM names. The expected 1522return value for both names is a Buffer of 5 DWORDs. This repair fixes two 1523possible problems (both seen in the field), where a package of integers is 1524returned, or a buffer of BYTEs is returned. With assistance from Jung-uk Kim. 1525 1526Implemented additional module-level code support. This change will properly 1527execute module-level code that is not at the root of the namespace (under a 1528Device object, etc.). Now executes the code within the current scope instead 1529of the root. ACPICA BZ 762. Lin Ming. 1530 1531Fixed possible mutex acquisition errors when running _REG methods. Fixes a 1532problem where mutex errors can occur when running a _REG method that is in 1533the same scope as a method-defined operation region or an operation region 1534under a module-level IF block. This type of code is rare, so the problem has 1535not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore. 1536 1537Fixed a possible memory leak during module-level code execution. An object 1538could be leaked for each block of executed module-level code if the 1539interpreter slack mode is enabled This change deletes any implicitly returned 1540object from the module-level code block. Lin Ming. 1541 1542Removed messages for successful predefined repair(s). The repair mechanism 1543was considered too wordy. Now, messages are only unconditionally emitted if 1544the return object cannot be repaired. Existing messages for successful 1545repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ 827. 1546 1547Example Code and Data Size: These are the sizes for the OS-independent 1548acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1549debug version of the code includes the debug output trace mechanism and has a 1550much larger code and data size. 1551 1552 Previous Release: 1553 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 1554 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 1555 Current Release: 1556 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 1557 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 1558 15592) iASL Compiler/Disassembler and Tools: 1560 1561iASL: Fixed a regression introduced in 20091112 where intermediate .SRC files 1562were no longer automatically removed at the termination of the compile. 1563 1564acpiexec: Implemented the -f option to specify default region fill value. 1565This option specifies the value used to initialize buffers that simulate 1566operation regions. Default value is zero. Useful for debugging problems that 1567depend on a specific initial value for a region or field. 1568 1569---------------------------------------- 157012 November 2009. Summary of changes for version 20091112: 1571 15721) ACPI CA Core Subsystem: 1573 1574Implemented a post-order callback to AcpiWalkNamespace. The existing 1575interface only has a pre-order callback. This change adds an additional 1576parameter for a post-order callback which will be more useful for bus scans. 1577ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference. 1578 1579Modified the behavior of the operation region memory mapping cache for 1580SystemMemory. Ensure that the memory mappings created for operation regions 1581do not cross 4K page boundaries. Crossing a page boundary while mapping 1582regions can cause kernel warnings on some hosts if the pages have different 1583attributes. Such regions are probably BIOS bugs, and this is the workaround. 1584Linux BZ 14445. Lin Ming. 1585 1586Implemented an automatic repair for predefined methods that must return 1587sorted lists. This change will repair (by sorting) packages returned by _ALR, 1588_PSS, and _TSS. Drivers can now assume that the packages are correctly sorted 1589and do not contain NULL package elements. Adds one new file, 1590namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore. 1591 1592Fixed a possible fault during predefined name validation if a return Package 1593object contains NULL elements. Also adds a warning if a NULL element is 1594followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement may 1595include repair or removal of all such NULL elements where possible. 1596 1597Implemented additional module-level executable AML code support. This change 1598will execute module-level code that is not at the root of the namespace 1599(under a Device object, etc.) at table load time. Module-level executable AML 1600code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming. 1601 1602Implemented a new internal function to create Integer objects. This function 1603simplifies miscellaneous object creation code. ACPICA BZ 823. 1604 1605Reduced the severity of predefined repair messages, Warning to Info. Since 1606the object was successfully repaired, a warning is too severe. Reduced to an 1607info message for now. These messages may eventually be changed to debug-only. 1608ACPICA BZ 812. 1609 1610Example Code and Data Size: These are the sizes for the OS-independent 1611acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1612debug version of the code includes the debug output trace mechanism and has a 1613much larger code and data size. 1614 1615 Previous Release: 1616 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 1617 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 1618 Current Release: 1619 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 1620 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 1621 16222) iASL Compiler/Disassembler and Tools: 1623 1624iASL: Implemented Switch() with While(1) so that Break works correctly. This 1625change correctly implements the Switch operator with a surrounding While(1) 1626so that the Break operator works as expected. ACPICA BZ 461. Lin Ming. 1627 1628iASL: Added a message if a package initializer list is shorter than package 1629length. Adds a new remark for a Package() declaration if an initializer list 1630exists, but is shorter than the declared length of the package. Although 1631technically legal, this is probably a coding error and it is seen in the 1632field. ACPICA BZ 815. Lin Ming, Bob Moore. 1633 1634iASL: Fixed a problem where the compiler could fault after the maximum number 1635of errors was reached (200). 1636 1637acpixtract: Fixed a possible warning for pointer cast if the compiler warning 1638level set very high. 1639 1640---------------------------------------- 164113 October 2009. Summary of changes for version 20091013: 1642 16431) ACPI CA Core Subsystem: 1644 1645Fixed a problem where an Operation Region _REG method could be executed more 1646than once. If a custom address space handler is installed by the host before 1647the "initialize operation regions" phase of the ACPICA initialization, any 1648_REG methods for that address space could be executed twice. This change 1649fixes the problem. ACPICA BZ 427. Lin Ming. 1650 1651Fixed a possible memory leak for the Scope() ASL operator. When the exact 1652invocation of "Scope(\)" is executed (change scope to root), one internal 1653operand object was leaked. Lin Ming. 1654 1655Implemented a run-time repair for the _MAT predefined method. If the _MAT 1656return value is defined as a Field object in the AML, and the field 1657size is less than or equal to the default width of an integer (32 or 64),_MAT 1658can incorrectly return an Integer instead of a Buffer. ACPICA now 1659automatically repairs this problem. ACPICA BZ 810. 1660 1661Implemented a run-time repair for the _BIF and _BIX predefined methods. The 1662"OEM Information" field is often incorrectly returned as an Integer with 1663value zero if the field is not supported by the platform. This is due to an 1664ambiguity in the ACPI specification. The field should always be a string. 1665ACPICA now automatically repairs this problem by returning a NULL string 1666within the returned Package. ACPICA BZ 807. 1667 1668Example Code and Data Size: These are the sizes for the OS-independent 1669acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1670debug version of the code includes the debug output trace mechanism and has a 1671much larger code and data size. 1672 1673 Previous Release: 1674 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 1675 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 1676 Current Release: 1677 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 1678 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 1679 16802) iASL Compiler/Disassembler and Tools: 1681 1682Disassembler: Fixed a problem where references to external symbols that 1683contained one or more parent-prefixes (carats) were not handled correctly, 1684possibly causing a fault. ACPICA BZ 806. Lin Ming. 1685 1686Disassembler: Restructured the code so that all functions that handle 1687external symbols are in a single module. One new file is added, 1688common/dmextern.c. 1689 1690AML Debugger: Added a max count argument for the Batch command (which 1691executes multiple predefined methods within the namespace.) 1692 1693iASL: Updated the compiler documentation (User Reference.) Available at 1694http://www.acpica.org/documentation/. ACPICA BZ 750. 1695 1696AcpiXtract: Updated for Lint and other formatting changes. Close all open 1697files. 1698 1699---------------------------------------- 170003 September 2009. Summary of changes for version 20090903: 1701 17021) ACPI CA Core Subsystem: 1703 1704For Windows Vista compatibility, added the automatic execution of an _INI 1705method located at the namespace root (\_INI). This method is executed at 1706table load time. This support is in addition to the automatic execution of 1707\_SB._INI. Lin Ming. 1708 1709Fixed a possible memory leak in the interpreter for AML package objects if 1710the package initializer list is longer than the defined size of the package. 1711This apparently can only happen if the BIOS changes the package size on the 1712fly (seen in a _PSS object), as ASL compilers do not allow this. The 1713interpreter will truncate the package to the defined size (and issue an error 1714message), but previously could leave the extra objects undeleted if they were 1715pre-created during the argument processing (such is the case if the package 1716consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805. 1717 1718Fixed a problem seen when a Buffer or String is stored to itself via ASL. 1719This has been reported in the field. Previously, ACPICA would zero out the 1720buffer/string. Now, the operation is treated as a noop. Provides Windows 1721compatibility. ACPICA BZ 803. Lin Ming. 1722 1723Removed an extraneous error message for ASL constructs of the form 1724Store(LocalX,LocalX) when LocalX is uninitialized. These curious statements 1725are seen in many BIOSs and are once again treated as NOOPs and no error is 1726emitted when they are encountered. ACPICA BZ 785. 1727 1728Fixed an extraneous warning message if a _DSM reserved method returns a 1729Package object. _DSM can return any type of object, so validation on the 1730return type cannot be performed. ACPICA BZ 802. 1731 1732Example Code and Data Size: These are the sizes for the OS-independent 1733acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1734debug version of the code includes the debug output trace mechanism and has a 1735much larger code and data size. 1736 1737 Previous Release: 1738 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 1739 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 1740 Current Release: 1741 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 1742 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 1743 17442) iASL Compiler/Disassembler and Tools: 1745 1746iASL: Fixed a problem with the use of the Alias operator and Resource 1747Templates. The correct alias is now constructed and no error is emitted. 1748ACPICA BZ 738. 1749 1750iASL: Implemented the -I option to specify additional search directories for 1751include files. Allows multiple additional search paths for include files. 1752Directories are searched in the order specified on the command line (after 1753the local directory is searched.) ACPICA BZ 800. 1754 1755iASL: Fixed a problem where the full pathname for include files was not 1756emitted for warnings/errors. This caused the IDE support to not work 1757properly. ACPICA BZ 765. 1758 1759iASL: Implemented the -@ option to specify a Windows-style response file 1760containing additional command line options. ACPICA BZ 801. 1761 1762AcpiExec: Added support to load multiple AML files simultaneously (such as a 1763DSDT and multiple SSDTs). Also added support for wildcards within the AML 1764pathname. These features allow all machine tables to be easily loaded and 1765debugged together. ACPICA BZ 804. 1766 1767Disassembler: Added missing support for disassembly of HEST table Error Bank 1768subtables. 1769 1770---------------------------------------- 177130 July 2009. Summary of changes for version 20090730: 1772 1773The ACPI 4.0 implementation for ACPICA is complete with this release. 1774 17751) ACPI CA Core Subsystem: 1776 1777ACPI 4.0: Added header file support for all new and changed ACPI tables. 1778Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are new 1779for ACPI 4.0, but have previously been supported in ACPICA are: CPEP, BERT, 1780EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT. There 1781have been some ACPI 4.0 changes to other existing tables. Split the large 1782actbl1.h header into the existing actbl2.h header. ACPICA BZ 774. 1783 1784ACPI 4.0: Implemented predefined name validation for all new names. There are 178531 new names in ACPI 4.0. The predefined validation module was split into two 1786files. The new file is namespace/nsrepair.c. ACPICA BZ 770. 1787 1788Implemented support for so-called "module-level executable code". This is 1789executable AML code that exists outside of any control method and is intended 1790to be executed at table load time. Although illegal since ACPI 2.0, this type 1791of code still exists and is apparently still being created. Blocks of this 1792code are now detected and executed as intended. Currently, the code blocks 1793must exist under either an If, Else, or While construct; these are the 1794typical cases seen in the field. ACPICA BZ 762. Lin Ming. 1795 1796Implemented an automatic dynamic repair for predefined names that return 1797nested Package objects. This applies to predefined names that are defined to 1798return a variable-length Package of sub-packages. If the number of sub- 1799packages is one, BIOS code is occasionally seen that creates a simple single 1800package with no sub-packages. This code attempts to fix the problem by 1801wrapping a new package object around the existing package. These methods can 1802be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA BZ 1803790. 1804 1805Fixed a regression introduced in 20090625 for the AcpiGetDevices interface. 1806The _HID/_CID matching was broken and no longer matched IDs correctly. ACPICA 1807BZ 793. 1808 1809Fixed a problem with AcpiReset where the reset would silently fail if the 1810register was one of the protected I/O ports. AcpiReset now bypasses the port 1811validation mechanism. This may eventually be driven into the AcpiRead/Write 1812interfaces. 1813 1814Fixed a regression related to the recent update of the AcpiRead/Write 1815interfaces. A sleep/suspend could fail if the optional PM2 Control register 1816does not exist during an attempt to write the Bus Master Arbitration bit. 1817(However, some hosts already delete the code that writes this bit, and the 1818code may in fact be obsolete at this date.) ACPICA BZ 799. 1819 1820Fixed a problem where AcpiTerminate could fault if inadvertently called twice 1821in succession. ACPICA BZ 795. 1822 1823Example Code and Data Size: These are the sizes for the OS-independent 1824acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1825debug version of the code includes the debug output trace mechanism and has a 1826much larger code and data size. 1827 1828 Previous Release: 1829 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 1830 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 1831 Current Release: 1832 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 1833 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 1834 18352) iASL Compiler/Disassembler and Tools: 1836 1837ACPI 4.0: Implemented disassembler support for all new ACPI tables and 1838changes to existing tables. ACPICA BZ 775. 1839 1840---------------------------------------- 184125 June 2009. Summary of changes for version 20090625: 1842 1843The ACPI 4.0 Specification was released on June 16 and is available at 1844www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will 1845continue for the next few releases. 1846 18471) ACPI CA Core Subsystem: 1848 1849ACPI 4.0: Implemented interpreter support for the IPMI operation region 1850address space. Includes support for bi-directional data buffers and an IPMI 1851address space handler (to be installed by an IPMI device driver.) ACPICA BZ 1852773. Lin Ming. 1853 1854ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT. Includes 1855support in both the header files and the disassembler. 1856 1857Completed a major update for the AcpiGetObjectInfo external interface. 1858Changes include: 1859 - Support for variable, unlimited length HID, UID, and CID strings. 1860 - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA, etc.) 1861 - Call the _SxW power methods on behalf of a device object. 1862 - Determine if a device is a PCI root bridge. 1863 - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO. 1864These changes will require an update to all callers of this interface. See 1865the updated ACPICA Programmer Reference for details. One new source file has 1866been added - utilities/utids.c. ACPICA BZ 368, 780. 1867 1868Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit 1869transfers. The Value parameter has been extended from 32 bits to 64 bits in 1870order to support new ACPI 4.0 tables. These changes will require an update to 1871all callers of these interfaces. See the ACPICA Programmer Reference for 1872details. ACPICA BZ 768. 1873 1874Fixed several problems with AcpiAttachData. The handler was not invoked when 1875the host node was deleted. The data sub-object was not automatically deleted 1876when the host node was deleted. The interface to the handler had an unused 1877parameter, this was removed. ACPICA BZ 778. 1878 1879Enhanced the function that dumps ACPI table headers. All non-printable 1880characters in the string fields are now replaced with '?' (Signature, OemId, 1881OemTableId, and CompilerId.) ACPI tables with non-printable characters in 1882these fields are occasionally seen in the field. ACPICA BZ 788. 1883 1884Fixed a problem with predefined method repair code where the code that 1885attempts to repair/convert an object of incorrect type is only executed on 1886the first time the predefined method is called. The mechanism that disables 1887warnings on subsequent calls was interfering with the repair mechanism. 1888ACPICA BZ 781. 1889 1890Fixed a possible memory leak in the predefined validation/repair code when a 1891buffer is automatically converted to an expected string object. 1892 1893Removed obsolete 16-bit files from the distribution and from the current git 1894tree head. ACPICA BZ 776. 1895 1896Example Code and Data Size: These are the sizes for the OS-independent 1897acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1898debug version of the code includes the debug output trace mechanism and has a 1899much larger code and data size. 1900 1901 Previous Release: 1902 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 1903 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 1904 Current Release: 1905 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 1906 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 1907 19082) iASL Compiler/Disassembler and Tools: 1909 1910ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI 1911operation region keyword. ACPICA BZ 771, 772. Lin Ming. 1912 1913ACPI 4.0: iASL - implemented compile-time validation support for all new 1914predefined names and control methods (31 total). ACPICA BZ 769. 1915 1916---------------------------------------- 191721 May 2009. Summary of changes for version 20090521: 1918 19191) ACPI CA Core Subsystem: 1920 1921Disabled the preservation of the SCI enable bit in the PM1 control register. 1922The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification to be 1923a "preserved" bit - "OSPM always preserves this bit position", section 19244.7.3.2.1. However, some machines fail if this bit is in fact preserved 1925because the bit needs to be explicitly set by the OS as a workaround. No 1926machines fail if the bit is not preserved. Therefore, ACPICA no longer 1927attempts to preserve this bit. 1928 1929Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or 1930incorrectly formed _PRT package could cause a fault. Added validation to 1931ensure that each package element is actually a sub-package. 1932 1933Implemented a new interface to install or override a single control method, 1934AcpiInstallMethod. This interface is useful when debugging in order to repair 1935an existing method or to install a missing method without having to override 1936the entire ACPI table. See the ACPICA Programmer Reference for use and 1937examples. Lin Ming, Bob Moore. 1938 1939Fixed several reference count issues with the DdbHandle object that is 1940created from a Load or LoadTable operator. Prevent premature deletion of the 1941object. Also, mark the object as invalid once the table has been unloaded. 1942This is needed because the handle itself may not be deleted after the table 1943unload, depending on whether it has been stored in a named object by the 1944caller. Lin Ming. 1945 1946Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple 1947mutexes of the same sync level are acquired but then not released in strict 1948opposite order, the internally maintained Current Sync Level becomes confused 1949and can cause subsequent execution errors. ACPICA BZ 471. 1950 1951Changed the allowable release order for ASL mutex objects. The ACPI 4.0 1952specification has been changed to make the SyncLevel for mutex objects more 1953useful. When releasing a mutex, the SyncLevel of the mutex must now be the 1954same as the current sync level. This makes more sense than the previous rule 1955(SyncLevel less than or equal). This change updates the code to match the 1956specification. 1957 1958Fixed a problem with the local version of the AcpiOsPurgeCache function. The 1959(local) cache must be locked during all cache object deletions. Andrew 1960Baumann. 1961 1962Updated the Load operator to use operation region interfaces. This replaces 1963direct memory mapping with region access calls. Now, all region accesses go 1964through the installed region handler as they should. 1965 1966Simplified and optimized the NsGetNextNode function. Reduced parameter count 1967and reduced code for this frequently used function. 1968 1969Example Code and Data Size: These are the sizes for the OS-independent 1970acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1971debug version of the code includes the debug output trace mechanism and has a 1972much larger code and data size. 1973 1974 Previous Release: 1975 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 1976 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 1977 Current Release: 1978 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 1979 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 1980 19812) iASL Compiler/Disassembler and Tools: 1982 1983Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some problems 1984with sub-table disassembly and handling invalid sub-tables. Attempt recovery 1985after an invalid sub-table ID. 1986 1987---------------------------------------- 198822 April 2009. Summary of changes for version 20090422: 1989 19901) ACPI CA Core Subsystem: 1991 1992Fixed a compatibility issue with the recently released I/O port protection 1993mechanism. For windows compatibility, 1) On a port protection violation, 1994simply ignore the request and do not return an exception (allow the control 1995method to continue execution.) 2) If only part of the request overlaps a 1996protected port, read/write the individual ports that are not protected. Linux 1997BZ 13036. Lin Ming 1998 1999Enhanced the execution of the ASL/AML BreakPoint operator so that it actually 2000breaks into the AML debugger if the debugger is present. This matches the 2001ACPI-defined behavior. 2002 2003Fixed several possible warnings related to the use of the configurable 2004ACPI_THREAD_ID. This type can now be configured as either an integer or a 2005pointer with no warnings. Also fixes several warnings in printf-like 2006statements for the 64-bit build when the type is configured as a pointer. 2007ACPICA BZ 766, 767. 2008 2009Fixed a number of possible warnings when compiling with gcc 4+ (depending on 2010warning options.) Examples include printf formats, aliasing, unused globals, 2011missing prototypes, missing switch default statements, use of non-ANSI 2012library functions, use of non-ANSI constructs. See generate/unix/Makefile for 2013a list of warning options used with gcc 3 and 4. ACPICA BZ 735. 2014 2015Example Code and Data Size: These are the sizes for the OS-independent 2016acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2017debug version of the code includes the debug output trace mechanism and has a 2018much larger code and data size. 2019 2020 Previous Release: 2021 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 2022 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 2023 Current Release: 2024 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 2025 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 2026 20272) iASL Compiler/Disassembler and Tools: 2028 2029iASL: Fixed a generation warning from Bison 2.3 and fixed several warnings on 2030the 64-bit build. 2031 2032iASL: Fixed a problem where the Unix/Linux versions of the compiler could not 2033correctly digest Windows/DOS formatted files (with CR/LF). 2034 2035iASL: Added a new option for "quiet mode" (-va) that produces only the 2036compilation summary, not individual errors and warnings. Useful for large 2037batch compilations. 2038 2039AcpiExec: Implemented a new option (-z) to enable a forced semaphore/mutex 2040timeout that can be used to detect hang conditions during execution of AML 2041code (includes both internal semaphores and AML-defined mutexes and events.) 2042 2043Added new makefiles for the generation of acpica in a generic unix-like 2044environment. These makefiles are intended to generate the acpica tools and 2045utilities from the original acpica git source tree structure. 2046 2047Test Suites: Updated and cleaned up the documentation files. Updated the 2048copyrights to 2009, affecting all source files. Use the new version of iASL 2049with quiet mode. Increased the number of available semaphores in the Windows 2050OSL, allowing the aslts to execute fully on Windows. For the Unix OSL, added 2051an alternate implementation of the semaphore timeout to allow aslts to 2052execute fully on Cygwin. 2053 2054---------------------------------------- 205520 March 2009. Summary of changes for version 20090320: 2056 20571) ACPI CA Core Subsystem: 2058 2059Fixed a possible race condition between AcpiWalkNamespace and dynamic table 2060unloads. Added a reader/writer locking mechanism to allow multiple concurrent 2061namespace walks (readers), but block a dynamic table unload until it can gain 2062exclusive write access to the namespace. This fixes a problem where a table 2063unload could (possibly catastrophically) delete the portion of the namespace 2064that is currently being examined by a walk. Adds a new file, utlock.c, that 2065implements the reader/writer lock mechanism. ACPICA BZ 749. 2066 2067Fixed a regression introduced in version 20090220 where a change to the FADT 2068handling could cause the ACPICA subsystem to access non-existent I/O ports. 2069 2070Modified the handling of FADT register and table (FACS/DSDT) addresses. The 2071FADT can contain both 32-bit and 64-bit versions of these addresses. 2072Previously, the 64-bit versions were favored, meaning that if both 32 and 64 2073versions were valid, but not equal, the 64-bit version was used. This was 2074found to cause some machines to fail. Now, in this case, the 32-bit version 2075is used instead. This now matches the Windows behavior. 2076 2077Implemented a new mechanism to protect certain I/O ports. Provides Microsoft 2078compatibility and protects the standard PC I/O ports from access via AML 2079code. Adds a new file, hwvalid.c 2080 2081Fixed a possible extraneous warning message from the FADT support. The 2082message warns of a 32/64 length mismatch between the legacy and GAS 2083definitions for a register. 2084 2085Removed the obsolete AcpiOsValidateAddress OSL interface. This interface is 2086made obsolete by the port protection mechanism above. It was previously used 2087to validate the entire address range of an operation region, which could be 2088incorrect if the range included illegal ports, but fields within the 2089operation region did not actually access those ports. Validation is now 2090performed on a per-field basis instead of the entire region. 2091 2092Modified the handling of the PM1 Status Register ignored bit (bit 11.) 2093Ignored bits must be "preserved" according to the ACPI spec. Usually, this 2094means a read/modify/write when writing to the register. However, for status 2095registers, writing a one means clear the event. Writing a zero means preserve 2096the event (do not clear.) This behavior is clarified in the ACPI 4.0 spec, 2097and the ACPICA code now simply always writes a zero to the ignored bit. 2098 2099Modified the handling of ignored bits for the PM1 A/B Control Registers. As 2100per the ACPI specification, for the control registers, preserve 2101(read/modify/write) all bits that are defined as either reserved or ignored. 2102 2103Updated the handling of write-only bits in the PM1 A/B Control Registers. 2104When reading the register, zero the write-only bits as per the ACPI spec. 2105ACPICA BZ 443. Lin Ming. 2106 2107Removed "Linux" from the list of supported _OSI strings. Linux no longer 2108wants to reply true to this request. The Windows strings are the only paths 2109through the AML that are tested and known to work properly. 2110 2111 Previous Release: 2112 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 2113 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 2114 Current Release: 2115 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 2116 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 2117 21182) iASL Compiler/Disassembler and Tools: 2119 2120Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c and 2121aetables.c 2122 2123---------------------------------------- 212420 February 2009. Summary of changes for version 20090220: 2125 21261) ACPI CA Core Subsystem: 2127 2128Optimized the ACPI register locking. Removed locking for reads from the ACPI 2129bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock is 2130not required when reading the single-bit registers. The 2131AcpiGetRegisterUnlocked function is no longer needed and has been removed. 2132This will improve performance for reads on these registers. ACPICA BZ 760. 2133 2134Fixed the parameter validation for AcpiRead/Write. Now return 2135AE_BAD_PARAMETER if the input register pointer is null, and AE_BAD_ADDRESS if 2136the register has an address of zero. Previously, these cases simply returned 2137AE_OK. For optional registers such as PM1B status/enable/control, the caller 2138should check for a valid register address before calling. ACPICA BZ 748. 2139 2140Renamed the external ACPI bit register access functions. Renamed 2141AcpiGetRegister and AcpiSetRegister to clarify the purpose of these 2142functions. The new names are AcpiReadBitRegister and AcpiWriteBitRegister. 2143Also, restructured the code for these functions by simplifying the code path 2144and condensing duplicate code to reduce code size. 2145 2146Added new functions to transparently handle the possibly split PM1 A/B 2147registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two functions 2148now handle the split registers for PM1 Status, Enable, and Control. ACPICA BZ 2149746. 2150 2151Added a function to handle the PM1 control registers, AcpiHwWritePm1Control. 2152This function writes both of the PM1 control registers (A/B). These registers 2153are different than the PM1 A/B status and enable registers in that different 2154values can be written to the A/B registers. Most notably, the SLP_TYP bits 2155can be different, as per the values returned from the _Sx predefined methods. 2156 2157Removed an extra register write within AcpiHwClearAcpiStatus. This function 2158was writing an optional PM1B status register twice. The existing call to the 2159low-level AcpiHwRegisterWrite automatically handles a possibly split PM1 A/B 2160register. ACPICA BZ 751. 2161 2162Split out the PM1 Status registers from the FADT. Added new globals for these 2163registers (A/B), similar to the way the PM1 Enable registers are handled. 2164Instead of overloading the FADT Event Register blocks. This makes the code 2165clearer and less prone to error. 2166 2167Fixed the warning message for when the platform contains too many ACPI tables 2168for the default size of the global root table data structure. The calculation 2169for the truncation value was incorrect. 2170 2171Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this 2172obsolete macro, since it is now a simple reference to ->common.type. There 2173were about 150 invocations of the macro across 41 files. ACPICA BZ 755. 2174 2175Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as 2176TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to 2177simply SLEEP_TYPE. ACPICA BZ 754. 2178 2179Conditionally compile the AcpiSetFirmwareWakingVector64 function. This 2180function is only needed on 64-bit host operating systems and is thus not 2181included for 32-bit hosts. 2182 2183Debug output: print the input and result for invocations of the _OSI reserved 2184control method via the ACPI_LV_INFO debug level. Also, reduced some of the 2185verbosity of this debug level. Len Brown. 2186 2187Example Code and Data Size: These are the sizes for the OS-independent 2188acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2189debug version of the code includes the debug output trace mechanism and has a 2190much larger code and data size. 2191 2192 Previous Release: 2193 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 2194 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 2195 Current Release: 2196 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 2197 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 2198 21992) iASL Compiler/Disassembler and Tools: 2200 2201Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the 2202various legal performance profiles. 2203 2204---------------------------------------- 220523 January 2009. Summary of changes for version 20090123: 2206 22071) ACPI CA Core Subsystem: 2208 2209Added the 2009 copyright to all module headers and signons. This affects 2210virtually every file in the ACPICA core subsystem, the iASL compiler, and 2211the tools/utilities. 2212 2213Implemented a change to allow the host to override any ACPI table, including 2214dynamically loaded tables. Previously, only the DSDT could be replaced by the 2215host. With this change, the AcpiOsTableOverride interface is called for each 2216table found in the RSDT/XSDT during ACPICA initialization, and also whenever 2217a table is dynamically loaded via the AML Load operator. 2218 2219Updated FADT flag definitions, especially the Boot Architecture flags. 2220 2221Debugger: For the Find command, automatically pad the input ACPI name with 2222underscores if the name is shorter than 4 characters. This enables a match 2223with the actual namespace entry which is itself padded with underscores. 2224 2225Example Code and Data Size: These are the sizes for the OS-independent 2226acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2227debug version of the code includes the debug output trace mechanism and has a 2228much larger code and data size. 2229 2230 Previous Release: 2231 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 2232 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 2233 Current Release: 2234 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 2235 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 2236 22372) iASL Compiler/Disassembler and Tools: 2238 2239Fix build error under Bison-2.4. 2240 2241Dissasembler: Enhanced FADT support. Added decoding of the Boot Architecture 2242flags. Now decode all flags, regardless of the FADT version. Flag output 2243includes the FADT version which first defined each flag. 2244 2245The iASL -g option now dumps the RSDT to a file (in addition to the FADT and 2246DSDT). Windows only. 2247 2248---------------------------------------- 224904 December 2008. Summary of changes for version 20081204: 2250 22511) ACPI CA Core Subsystem: 2252 2253The ACPICA Programmer Reference has been completely updated and revamped for 2254this release. This includes updates to the external interfaces, OSL 2255interfaces, the overview sections, and the debugger reference. 2256 2257Several new ACPICA interfaces have been implemented and documented in the 2258programmer reference: 2259AcpiReset - Writes the reset value to the FADT-defined reset register. 2260AcpiDisableAllGpes - Disable all available GPEs. 2261AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs. 2262AcpiGetGpeDevice - Get the GPE block device associated with a GPE. 2263AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs. 2264AcpiRead - Low-level read ACPI register (was HwLowLevelRead.) 2265AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.) 2266 2267Most of the public ACPI hardware-related interfaces have been moved to a new 2268file, components/hardware/hwxface.c 2269 2270Enhanced the FADT parsing and low-level ACPI register access: The ACPI 2271register lengths within the FADT are now used, and the low level ACPI 2272register access no longer hardcodes the ACPI register lengths. Given that 2273there may be some risk in actually trusting the FADT register lengths, a run- 2274time option was added to fall back to the default hardcoded lengths if the 2275FADT proves to contain incorrect values - UseDefaultRegisterWidths. This 2276option is set to true for now, and a warning is issued if a suspicious FADT 2277register length is overridden with the default value. 2278 2279Fixed a reference count issue in NsRepairObject. This problem was introduced 2280in version 20081031 as part of a fix to repair Buffer objects within 2281Packages. Lin Ming. 2282 2283Added semaphore support to the Linux/Unix application OS-services layer 2284(OSL). ACPICA BZ 448. Lin Ming. 2285 2286Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes will 2287be implemented in the OSL, or will binary semaphores be used instead. 2288 2289Example Code and Data Size: These are the sizes for the OS-independent 2290acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2291debug version of the code includes the debug output trace mechanism and has a 2292much larger code and data size. 2293 2294 Previous Release: 2295 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 2296 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 2297 Current Release: 2298 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 2299 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 2300 23012) iASL Compiler/Disassembler and Tools: 2302 2303iASL: Completed the '-e' option to include additional ACPI tables in order to 2304aid with disassembly and External statement generation. ACPICA BZ 742. Lin 2305Ming. 2306 2307iASL: Removed the "named object in while loop" error. The compiler cannot 2308determine how many times a loop will execute. ACPICA BZ 730. 2309 2310Disassembler: Implemented support for FADT revision 2 (MS extension). ACPICA 2311BZ 743. 2312 2313Disassembler: Updates for several ACPI data tables (HEST, EINJ, and MCFG). 2314 2315---------------------------------------- 231631 October 2008. Summary of changes for version 20081031: 2317 23181) ACPI CA Core Subsystem: 2319 2320Restructured the ACPICA header files into public/private. acpi.h now includes 2321only the "public" acpica headers. All other acpica headers are "private" and 2322should not be included by acpica users. One new file, accommon.h is used to 2323include the commonly used private headers for acpica code generation. Future 2324plans include moving all private headers to a new subdirectory. 2325 2326Implemented an automatic Buffer->String return value conversion for 2327predefined ACPI methods. For these methods (such as _BIF), added automatic 2328conversion for return objects that are required to be a String, but a Buffer 2329was found instead. This can happen when reading string battery data from an 2330operation region, because it used to be difficult to convert the data from 2331buffer to string from within the ASL. Ensures that the host OS is provided 2332with a valid null-terminated string. Linux BZ 11822. 2333 2334Updated the FACS waking vector interfaces. Split AcpiSetFirmwareWakingVector 2335into two: one for the 32-bit vector, another for the 64-bit vector. This is 2336required because the host OS must setup the wake much differently for each 2337vector (real vs. protected mode, etc.) and the interface itself should not be 2338deciding which vector to use. Also, eliminated the GetFirmwareWakingVector 2339interface, as it served no purpose (only the firmware reads the vector, OS 2340only writes the vector.) ACPICA BZ 731. 2341 2342Implemented a mechanism to escape infinite AML While() loops. Added a loop 2343counter to force exit from AML While loops if the count becomes too large. 2344This can occur in poorly written AML when the hardware does not respond 2345within a while loop and the loop does not implement a timeout. The maximum 2346loop count is configurable. A new exception code is returned when a loop is 2347broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore. 2348 2349Optimized the execution of AML While loops. Previously, a control state 2350object was allocated and freed for each execution of the loop. The 2351optimization is to simply reuse the control state for each iteration. This 2352speeds up the raw loop execution time by about 5%. 2353 2354Enhanced the implicit return mechanism. For Windows compatibility, return an 2355implicit integer of value zero for methods that contain no executable code. 2356Such methods are seen in the field as stubs (presumably), and can cause 2357drivers to fail if they expect a return value. Lin Ming. 2358 2359Allow multiple backslashes as root prefixes in namepaths. In a fully 2360qualified namepath, allow multiple backslash prefixes. This can happen (and 2361is seen in the field) because of the use of a double-backslash in strings 2362(since backslash is the escape character) causing confusion. ACPICA BZ 739 2363Lin Ming. 2364 2365Emit a warning if two different FACS or DSDT tables are discovered in the 2366FADT. Checks if there are two valid but different addresses for the FACS and 2367DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.) 2368 2369Consolidated the method argument count validation code. Merged the code that 2370validates control method argument counts into the predefined validation 2371module. Eliminates possible multiple warnings for incorrect argument counts. 2372 2373Implemented ACPICA example code. Includes code for ACPICA initialization, 2374handler installation, and calling a control method. Available at 2375source/tools/examples. 2376 2377Added a global pointer for FACS table to simplify internal FACS access. Use 2378the global pointer instead of using AcpiGetTableByIndex for each FACS access. 2379This simplifies the code for the Global Lock and the Firmware Waking 2380Vector(s). 2381 2382Example Code and Data Size: These are the sizes for the OS-independent 2383acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2384debug version of the code includes the debug output trace mechanism and has a 2385much larger code and data size. 2386 2387 Previous Release: 2388 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 2389 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 2390 Current Release: 2391 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 2392 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 2393 23942) iASL Compiler/Disassembler and Tools: 2395 2396iASL: Improved disassembly of external method calls. Added the -e option to 2397allow the inclusion of additional ACPI tables to help with the disassembly of 2398method invocations and the generation of external declarations during the 2399disassembly. Certain external method invocations cannot be disassembled 2400properly without the actual declaration of the method. Use the -e option to 2401include the table where the external method(s) are actually declared. Most 2402useful for disassembling SSDTs that make method calls back to the master 2403DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl -d 2404-e dsdt.aml ssdt1.aml 2405 2406iASL: Fix to allow references to aliases within ASL namepaths. Fixes a 2407problem where the use of an alias within a namepath would result in a not 2408found error or cause the compiler to fault. Also now allows forward 2409references from the Alias operator itself. ACPICA BZ 738. 2410 2411---------------------------------------- 241226 September 2008. Summary of changes for version 20080926: 2413 24141) ACPI CA Core Subsystem: 2415 2416Designed and implemented a mechanism to validate predefined ACPI methods and 2417objects. This code validates the predefined ACPI objects (objects whose names 2418start with underscore) that appear in the namespace, at the time they are 2419evaluated. The argument count and the type of the returned object are 2420validated against the ACPI specification. The purpose of this validation is 2421to detect problems with the BIOS-implemented predefined ACPI objects before 2422the results are returned to the ACPI-related drivers. Future enhancements may 2423include actual repair of incorrect return objects where possible. Two new 2424files are nspredef.c and acpredef.h. 2425 2426Fixed a fault in the AML parser if a memory allocation fails during the Op 2427completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492. 2428 2429Fixed an issue with implicit return compatibility. This change improves the 2430implicit return mechanism to be more compatible with the MS interpreter. Lin 2431Ming, ACPICA BZ 349. 2432 2433Implemented support for zero-length buffer-to-string conversions. Allow zero 2434length strings during interpreter buffer-to-string conversions. For example, 2435during the ToDecimalString and ToHexString operators, as well as implicit 2436conversions. Fiodor Suietov, ACPICA BZ 585. 2437 2438Fixed two possible memory leaks in the error exit paths of 2439AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions are 2440similar in that they use a stack of state objects in order to eliminate 2441recursion. The stack must be fully unwound and deallocated if an error 2442occurs. Lin Ming. ACPICA BZ 383. 2443 2444Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the global 2445ACPI register table. This bit does not exist and is unused. Lin Ming, Bob 2446Moore ACPICA BZ 442. 2447 2448Removed the obsolete version number in module headers. Removed the 2449"$Revision" number that appeared in each module header. This version number 2450was useful under SourceSafe and CVS, but has no meaning under git. It is not 2451only incorrect, it could also be misleading. 2452 2453Example Code and Data Size: These are the sizes for the OS-independent 2454acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2455debug version of the code includes the debug output trace mechanism and has a 2456much larger code and data size. 2457 2458 Previous Release: 2459 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 2460 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 2461 Current Release: 2462 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 2463 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 2464 2465---------------------------------------- 246629 August 2008. Summary of changes for version 20080829: 2467 24681) ACPI CA Core Subsystem: 2469 2470Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type 2471Reference. Changes include the elimination of cheating on the Object field 2472for the DdbHandle subtype, addition of a reference class field to 2473differentiate the various reference types (instead of an AML opcode), and the 2474cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723 2475 2476Reduce an error to a warning for an incorrect method argument count. 2477Previously aborted with an error if too few arguments were passed to a 2478control method via the external ACPICA interface. Now issue a warning instead 2479and continue. Handles the case where the method inadvertently declares too 2480many arguments, but does not actually use the extra ones. Applies mainly to 2481the predefined methods. Lin Ming. Linux BZ 11032. 2482 2483Disallow the evaluation of named object types with no intrinsic value. Return 2484AE_TYPE for objects that have no value and therefore evaluation is undefined: 2485Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation of 2486these types were allowed, but an exception would be generated at some point 2487during the evaluation. Now, the error is generated up front. 2488 2489Fixed a possible memory leak in the AcpiNsGetExternalPathname function 2490(nsnames.c). Fixes a leak in the error exit path. 2491 2492Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These debug 2493levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and ACPI_EXCEPTION 2494interfaces. Also added ACPI_DB_EVENTS to correspond with the existing 2495ACPI_LV_EVENTS. 2496 2497Removed obsolete and/or unused exception codes from the acexcep.h header. 2498There is the possibility that certain device drivers may be affected if they 2499use any of these exceptions. 2500 2501The ACPICA documentation has been added to the public git source tree, under 2502acpica/documents. Included are the ACPICA programmer reference, the iASL 2503compiler reference, and the changes.txt release logfile. 2504 2505Example Code and Data Size: These are the sizes for the OS-independent 2506acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2507debug version of the code includes the debug output trace mechanism and has a 2508much larger code and data size. 2509 2510 Previous Release: 2511 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 2512 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 2513 Current Release: 2514 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 2515 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 2516 25172) iASL Compiler/Disassembler and Tools: 2518 2519Allow multiple argument counts for the predefined _SCP method. ACPI 3.0 2520defines _SCP with 3 arguments. Previous versions defined it with only 1 2521argument. iASL now allows both definitions. 2522 2523iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for zero- 2524length subtables when disassembling ACPI tables. Also fixed a couple of 2525errors where a full 16-bit table type field was not extracted from the input 2526properly. 2527 2528acpisrc: Improve comment counting mechanism for generating source code 2529statistics. Count first and last lines of multi-line comments as whitespace, 2530not comment lines. Handle Linux legal header in addition to standard acpica 2531header. 2532 2533---------------------------------------- 2534 253529 July 2008. Summary of changes for version 20080729: 2536 25371) ACPI CA Core Subsystem: 2538 2539Fix a possible deadlock in the GPE dispatch. Remove call to 2540AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will attempt 2541to acquire the GPE lock but can deadlock since the GPE lock is already held 2542at dispatch time. This code was introduced in version 20060831 as a response 2543to Linux BZ 6881 and has since been removed from Linux. 2544 2545Add a function to dereference returned reference objects. Examines the return 2546object from a call to AcpiEvaluateObject. Any Index or RefOf references are 2547automatically dereferenced in an attempt to return something useful (these 2548reference types cannot be converted into an external ACPI_OBJECT.) Provides 2549MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105 2550 2551x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new 2552subtables for the MADT and one new subtable for the SRAT. Includes 2553disassembler and AcpiSrc support. Data from the Intel 64 Architecture x2APIC 2554Specification, June 2008. 2555 2556Additional error checking for pathname utilities. Add error check after all 2557calls to AcpiNsGetPathnameLength. Add status return from 2558AcpiNsBuildExternalPath and check after all calls. Add parameter validation 2559to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar. 2560 2561Return status from the global init function AcpiUtGlobalInitialize. This is 2562used by both the kernel subsystem and the utilities such as iASL compiler. 2563The function could possibly fail when the caches are initialized. Yang Yi. 2564 2565Add a function to decode reference object types to strings. Created for 2566improved error messages. 2567 2568Improve object conversion error messages. Better error messages during object 2569conversion from internal to the external ACPI_OBJECT. Used for external calls 2570to AcpiEvaluateObject. 2571 2572Example Code and Data Size: These are the sizes for the OS-independent 2573acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2574debug version of the code includes the debug output trace mechanism and has a 2575much larger code and data size. 2576 2577 Previous Release: 2578 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 2579 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 2580 Current Release: 2581 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 2582 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 2583 25842) iASL Compiler/Disassembler and Tools: 2585 2586Debugger: fix a possible hang when evaluating non-methods. Fixes a problem 2587introduced in version 20080701. If the object being evaluated (via execute 2588command) is not a method, the debugger can hang while trying to obtain non- 2589existent parameters. 2590 2591iASL: relax error for using reserved "_T_x" identifiers. These names can 2592appear in a disassembled ASL file if they were emitted by the original 2593compiler. Instead of issuing an error or warning and forcing the user to 2594manually change these names, issue a remark instead. 2595 2596iASL: error if named object created in while loop. Emit an error if any named 2597object is created within a While loop. If allowed, this code will generate a 2598run-time error on the second iteration of the loop when an attempt is made to 2599create the same named object twice. ACPICA bugzilla 730. 2600 2601iASL: Support absolute pathnames for include files. Add support for absolute 2602pathnames within the Include operator. previously, only relative pathnames 2603were supported. 2604 2605iASL: Enforce minimum 1 interrupt in interrupt macro and Resource Descriptor. 2606The ACPI spec requires one interrupt minimum. BZ 423 2607 2608iASL: Handle a missing ResourceSource arg, with a present SourceIndex. 2609Handles the case for the Interrupt Resource Descriptor where 2610the ResourceSource argument is omitted but ResourceSourceIndex 2611is present. Now leave room for the Index. BZ 426 2612 2613iASL: Prevent error message if CondRefOf target does not exist. Fixes cases 2614where an error message is emitted if the target does not exist. BZ 516 2615 2616iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option 2617(get ACPI tables on Windows). This was apparently broken in version 20070919. 2618 2619AcpiXtract: Handle EOF while extracting data. Correctly handle the case where 2620the EOF happens immediately after the last table in the input file. Print 2621completion message. Previously, no message was displayed in this case. 2622 2623---------------------------------------- 262401 July 2008. Summary of changes for version 20080701: 2625 26260) Git source tree / acpica.org 2627 2628Fixed a problem where a git-clone from http would not transfer the entire 2629source tree. 2630 26311) ACPI CA Core Subsystem: 2632 2633Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one 2634enable bit. Now performs a read-change-write of the enable register instead 2635of simply writing out the cached enable mask. This will prevent inadvertent 2636enabling of GPEs if a rogue GPE is received during initialization (before GPE 2637handlers are installed.) 2638 2639Implemented a copy for dynamically loaded tables. Previously, dynamically 2640loaded tables were simply mapped - but on some machines this memory is 2641corrupted after suspend. Now copy the table to a local buffer. For the 2642OpRegion case, added checksum verify. Use the table length from the table 2643header, not the region length. For the Buffer case, use the table length 2644also. Dennis Noordsij, Bob Moore. BZ 10734 2645 2646Fixed a problem where the same ACPI table could not be dynamically loaded and 2647unloaded more than once. Without this change, a table cannot be loaded again 2648once it has been loaded/unloaded one time. The current mechanism does not 2649unregister a table upon an unload. During a load, if the same table is found, 2650this no longer returns an exception. BZ 722 2651 2652Fixed a problem where the wrong descriptor length was calculated for the 2653EndTag descriptor in 64-bit mode. The "minimal" descriptors such as EndTag 2654are calculated as 12 bytes long, but the actual length in the internal 2655descriptor is 16 because of the round-up to 8 on the 64-bit build. Reported 2656by Linn Crosetto. BZ 728 2657 2658Fixed a possible memory leak in the Unload operator. The DdbHandle returned 2659by Load() did not have its reference count decremented during unload, leading 2660to a memory leak. Lin Ming. BZ 727 2661 2662Fixed a possible memory leak when deleting thermal/processor objects. Any 2663associated notify handlers (and objects) were not being deleted. Fiodor 2664Suietov. BZ 506 2665 2666Fixed the ordering of the ASCII names in the global mutex table to match the 2667actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug only. 2668Vegard Nossum. BZ 726 2669 2670Enhanced the AcpiGetObjectInfo interface to return the number of required 2671arguments if the object is a control method. Added this call to the debugger 2672so the proper number of default arguments are passed to a method. This 2673prevents a warning when executing methods from AcpiExec. 2674 2675Added a check for an invalid handle in AcpiGetObjectInfo. Return 2676AE_BAD_PARAMETER if input handle is invalid. BZ 474 2677 2678Fixed an extraneous warning from exconfig.c on the 64-bit build. 2679 2680Example Code and Data Size: These are the sizes for the OS-independent 2681acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2682debug version of the code includes the debug output trace mechanism and has a 2683much larger code and data size. 2684 2685 Previous Release: 2686 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 2687 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 2688 Current Release: 2689 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 2690 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 2691 26922) iASL Compiler/Disassembler and Tools: 2693 2694iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both 2695resource descriptor names. 2696 2697iASL: Detect invalid ASCII characters in input (windows version). Removed the 2698"-CF" flag from the flex compile, enables correct detection of non-ASCII 2699characters in the input. BZ 441 2700 2701iASL: Eliminate warning when result of LoadTable is not used. Eliminate the 2702"result of operation not used" warning when the DDB handle returned from 2703LoadTable is not used. The warning is not needed. BZ 590 2704 2705AcpiExec: Add support for dynamic table load/unload. Now calls _CFG method to 2706pass address of table to the AML. Added option to disable OpRegion simulation 2707to allow creation of an OpRegion with a real address that was passed to _CFG. 2708All of this allows testing of the Load and Unload operators from AcpiExec. 2709 2710Debugger: update tables command for unloaded tables. Handle unloaded tables 2711and use the standard table header output routine. 2712 2713---------------------------------------- 271409 June 2008. Summary of changes for version 20080609: 2715 27161) ACPI CA Core Subsystem: 2717 2718Implemented a workaround for reversed _PRT entries. A significant number of 2719BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This 2720change dynamically detects and repairs this problem. Provides compatibility 2721with MS ACPI. BZ 6859 2722 2723Simplified the internal ACPI hardware interfaces to eliminate the locking 2724flag parameter from Register Read/Write. Added a new external interface, 2725AcpiGetRegisterUnlocked. 2726 2727Fixed a problem where the invocation of a GPE control method could hang. This 2728was a regression introduced in 20080514. The new method argument count 2729validation mechanism can enter an infinite loop when a GPE method is 2730dispatched. Problem fixed by removing the obsolete code that passed GPE block 2731information to the notify handler via the control method parameter pointer. 2732 2733Fixed a problem where the _SST execution status was incorrectly returned to 2734the caller of AcpiEnterSleepStatePrep. This was a regression introduced in 273520080514. _SST is optional and a NOT_FOUND exception should never be 2736returned. BZ 716 2737 2738Fixed a problem where a deleted object could be accessed from within the AML 2739parser. This was a regression introduced in version 20080123 as a fix for the 2740Unload operator. Lin Ming. BZ 10669 2741 2742Cleaned up the debug operand dump mechanism. Eliminated unnecessary operands 2743and eliminated the use of a negative index in a loop. Operands are now 2744displayed in the correct order, not backwards. This also fixes a regression 2745introduced in 20080514 on 64-bit systems where the elimination of 2746ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ 715 2747 2748Fixed a possible memory leak in EvPciConfigRegionSetup where the error exit 2749path did not delete a locally allocated structure. 2750 2751Updated definitions for the DMAR and SRAT tables to synchronize with the 2752current specifications. Includes disassembler support. 2753 2754Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect 2755loop termination value was used. Loop terminated on iteration early, missing 2756one mutex. Linn Crosetto 2757 2758Example Code and Data Size: These are the sizes for the OS-independent 2759acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2760debug version of the code includes the debug output trace mechanism and has a 2761much larger code and data size. 2762 2763 Previous Release: 2764 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 2765 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 2766 Current Release: 2767 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 2768 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 2769 27702) iASL Compiler/Disassembler and Tools: 2771 2772Disassembler: Implemented support for EisaId() within _CID objects. Now 2773disassemble integer _CID objects back to EisaId invocations, including 2774multiple integers within _CID packages. Includes single-step support for 2775debugger also. 2776 2777Disassembler: Added support for DMAR and SRAT table definition changes. 2778 2779---------------------------------------- 278014 May 2008. Summary of changes for version 20080514: 2781 27821) ACPI CA Core Subsystem: 2783 2784Fixed a problem where GPEs were enabled too early during the ACPICA 2785initialization. This could lead to "handler not installed" errors on some 2786machines. Moved GPE enable until after _REG/_STA/_INI methods are run. This 2787ensures that all operation regions and devices throughout the namespace have 2788been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916. 2789 2790Implemented a change to the enter sleep code. Moved execution of the _GTS 2791method to just before setting sleep enable bit. The execution was moved from 2792AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed 2793immediately before the SLP_EN bit is set, as per the ACPI specification. 2794Luming Yu, BZ 1653. 2795 2796Implemented a fix to disable unknown GPEs (2nd version). Now always disable 2797the GPE, even if ACPICA thinks that that it is already disabled. It is 2798possible that the AML or some other code has enabled the GPE unbeknownst to 2799the ACPICA code. 2800 2801Fixed a problem with the Field operator where zero-length fields would return 2802an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length ASL 2803field declarations in Field(), BankField(), and IndexField(). BZ 10606. 2804 2805Implemented a fix for the Load operator, now load the table at the namespace 2806root. This reverts a change introduced in version 20071019. The table is now 2807loaded at the namespace root even though this goes against the ACPI 2808specification. This provides compatibility with other ACPI implementations. 2809The ACPI specification will be updated to reflect this in ACPI 4.0. Lin Ming. 2810 2811Fixed a problem where ACPICA would not Load() tables with unusual signatures. 2812Now ignore ACPI table signature for Load() operator. Only "SSDT" is 2813acceptable to the ACPI spec, but tables are seen with OEMx and null sigs. 2814Therefore, signature validation is worthless. Apparently MS ACPI accepts such 2815signatures, ACPICA must be compatible. BZ 10454. 2816 2817Fixed a possible negative array index in AcpiUtValidateException. Added NULL 2818fields to the exception string arrays to eliminate a -1 subtraction on the 2819SubStatus field. 2820 2821Updated the debug tracking macros to reduce overall code and data size. 2822Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings 2823instead of pointers to static strings. Jan Beulich and Bob Moore. 2824 2825Implemented argument count checking in control method invocation via 2826AcpiEvaluateObject. Now emit an error if too few arguments, warning if too 2827many. This applies only to extern programmatic control method execution, not 2828method-to-method calls within the AML. Lin Ming. 2829 2830Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is no 2831longer needed, especially with the removal of 16-bit support. It was replaced 2832mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64 bit on 283332/64-bit platforms is required. 2834 2835Added the C const qualifier for appropriate string constants -- mostly 2836MODULE_NAME and printf format strings. Jan Beulich. 2837 2838Example Code and Data Size: These are the sizes for the OS-independent 2839acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2840debug version of the code includes the debug output trace mechanism and has a 2841much larger code and data size. 2842 2843 Previous Release: 2844 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 2845 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 2846 Current Release: 2847 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 2848 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 2849 28502) iASL Compiler/Disassembler and Tools: 2851 2852Implemented ACPI table revision ID validation in the disassembler. Zero is 2853always invalid. For DSDTs, the ID controls the interpreter integer width. 1 2854means 32-bit and this is unusual. 2 or greater is 64-bit. 2855 2856---------------------------------------- 285721 March 2008. Summary of changes for version 20080321: 2858 28591) ACPI CA Core Subsystem: 2860 2861Implemented an additional change to the GPE support in order to suppress 2862spurious or stray GPEs. The AcpiEvDisableGpe function will now permanently 2863disable incoming GPEs that are neither enabled nor disabled -- meaning that 2864the GPE is unknown to the system. This should prevent future interrupt floods 2865from that GPE. BZ 6217 (Zhang Rui) 2866 2867Fixed a problem where NULL package elements were not returned to the 2868AcpiEvaluateObject interface correctly. The element was simply ignored 2869instead of returning a NULL ACPI_OBJECT package element, potentially causing 2870a buffer overflow and/or confusing the caller who expected a fixed number of 2871elements. BZ 10132 (Lin Ming, Bob Moore) 2872 2873Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word, Dword, 2874Qword), Field, BankField, and IndexField operators when invoked from inside 2875an executing control method. In this case, these operators created namespace 2876nodes that were incorrectly left marked as permanent nodes instead of 2877temporary nodes. This could cause a problem if there is race condition 2878between an exiting control method and a running namespace walk. (Reported by 2879Linn Crosetto) 2880 2881Fixed a problem where the CreateField and CreateXXXField operators would 2882incorrectly allow duplicate names (the name of the field) with no exception 2883generated. 2884 2885Implemented several changes for Notify handling. Added support for new Notify 2886values (ACPI 2.0+) and improved the Notify debug output. Notify on 2887PowerResource objects is no longer allowed, as per the ACPI specification. 2888(Bob Moore, Zhang Rui) 2889 2890All Reference Objects returned via the AcpiEvaluateObject interface are now 2891marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved for 2892NULL objects - either NULL package elements or unresolved named references. 2893 2894Fixed a problem where an extraneous debug message was produced for package 2895objects (when debugging enabled). The message "Package List length larger 2896than NumElements count" is now produced in the correct case, and is now an 2897error message rather than a debug message. Added a debug message for the 2898opposite case, where NumElements is larger than the Package List (the package 2899will be padded out with NULL elements as per the ACPI spec.) 2900 2901Implemented several improvements for the output of the ASL "Debug" object to 2902clarify and keep all data for a given object on one output line. 2903 2904Fixed two size calculation issues with the variable-length Start Dependent 2905resource descriptor. 2906 2907Example Code and Data Size: These are the sizes for the OS-independent 2908acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2909debug version of the code includes the debug output trace mechanism and has 2910a much larger code and data size. 2911 2912 Previous Release: 2913 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 2914 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 2915 Current Release: 2916 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 2917 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 2918 29192) iASL Compiler/Disassembler and Tools: 2920 2921Fixed a problem with the use of the Switch operator where execution of the 2922containing method by multiple concurrent threads could cause an 2923AE_ALREADY_EXISTS exception. This is caused by the fact that there is no 2924actual Switch opcode, it must be simulated with local named temporary 2925variables and if/else pairs. The solution chosen was to mark any method that 2926uses Switch as Serialized, thus preventing multiple thread entries. BZ 469. 2927 2928---------------------------------------- 292913 February 2008. Summary of changes for version 20080213: 2930 29311) ACPI CA Core Subsystem: 2932 2933Implemented another MS compatibility design change for GPE/Notify handling. 2934GPEs are now cleared/enabled asynchronously to allow all pending notifies to 2935complete first. It is expected that the OSL will queue the enable request 2936behind all pending notify requests (may require changes to the local host OSL 2937in AcpiOsExecute). Alexey Starikovskiy. 2938 2939Fixed a problem where buffer and package objects passed as arguments to a 2940control method via the external AcpiEvaluateObject interface could cause an 2941AE_AML_INTERNAL exception depending on the order and type of operators 2942executed by the target control method. 2943 2944Fixed a problem where resource descriptor size optimization could cause a 2945problem when a _CRS resource template is passed to a _SRS method. The _SRS 2946resource template must use the same descriptors (with the same size) as 2947returned from _CRS. This change affects the following resource descriptors: 2948IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ 9487) 2949 2950Fixed a problem where a CopyObject to RegionField, BankField, and IndexField 2951objects did not perform an implicit conversion as it should. These types must 2952retain their initial type permanently as per the ACPI specification. However, 2953a CopyObject to all other object types should not perform an implicit 2954conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388 2955 2956Fixed a problem with the AcpiGetDevices interface where the mechanism to 2957match device CIDs did not examine the entire list of available CIDs, but 2958instead aborted on the first non-matching CID. Andrew Patterson. 2959 2960Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro was 2961inadvertently changed to return a 16-bit value instead of a 32-bit value, 2962truncating the upper dword of a 64-bit value. This macro is only used to 2963display debug output, so no incorrect calculations were made. Also, 2964reimplemented the macro so that a 64-bit shift is not performed by 2965inefficient compilers. 2966 2967Added missing va_end statements that should correspond with each va_start 2968statement. 2969 2970Example Code and Data Size: These are the sizes for the OS-independent 2971acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2972debug version of the code includes the debug output trace mechanism and has 2973a much larger code and data size. 2974 2975 Previous Release: 2976 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 2977 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 2978 Current Release: 2979 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 2980 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 2981 29822) iASL Compiler/Disassembler and Tools: 2983 2984Implemented full disassembler support for the following new ACPI tables: 2985BERT, EINJ, and ERST. Implemented partial disassembler support for the 2986complicated HEST table. These tables support the Windows Hardware Error 2987Architecture (WHEA). 2988 2989---------------------------------------- 299023 January 2008. Summary of changes for version 20080123: 2991 29921) ACPI CA Core Subsystem: 2993 2994Added the 2008 copyright to all module headers and signons. This affects 2995virtually every file in the ACPICA core subsystem, the iASL compiler, and 2996the tools/utilities. 2997 2998Fixed a problem with the SizeOf operator when used with Package and Buffer 2999objects. These objects have deferred execution for some arguments, and the 3000execution is now completed before the SizeOf is executed. This problem caused 3001unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore) BZ 30029558 3003 3004Implemented an enhancement to the interpreter "slack mode". In the absence of 3005an explicit return or an implicitly returned object from the last executed 3006opcode, a control method will now implicitly return an integer of value 0 for 3007Microsoft compatibility. (Lin Ming) BZ 392 3008 3009Fixed a problem with the Load operator where an exception was not returned in 3010the case where the table is already loaded. (Lin Ming) BZ 463 3011 3012Implemented support for the use of DDBHandles as an Indexed Reference, as per 3013the ACPI spec. (Lin Ming) BZ 486 3014 3015Implemented support for UserTerm (Method invocation) for the Unload operator 3016as per the ACPI spec. (Lin Ming) BZ 580 3017 3018Fixed a problem with the LoadTable operator where the OemId and OemTableId 3019input strings could cause unexpected failures if they were shorter than the 3020maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576 3021 3022Implemented support for UserTerm (Method invocation) for the Unload operator 3023as per the ACPI spec. (Lin Ming) BZ 580 3024 3025Implemented header file support for new ACPI tables - BERT, ERST, EINJ, HEST, 3026IBFT, UEFI, WDAT. Disassembler support is forthcoming. 3027 3028Example Code and Data Size: These are the sizes for the OS-independent 3029acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3030debug version of the code includes the debug output trace mechanism and has 3031a much larger code and data size. 3032 3033 Previous Release: 3034 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 3035 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 3036 Current Release: 3037 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 3038 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 3039 30402) iASL Compiler/Disassembler and Tools: 3041 3042Implemented support in the disassembler for checksum validation on incoming 3043binary DSDTs and SSDTs. If incorrect, a message is displayed within the table 3044header dump at the start of the disassembly. 3045 3046Implemented additional debugging information in the namespace listing file 3047created during compilation. In addition to the namespace hierarchy, the full 3048pathname to each namespace object is displayed. 3049 3050Fixed a problem with the disassembler where invalid ACPI tables could cause 3051faults or infinite loops. 3052 3053Fixed an unexpected parse error when using the optional "parameter types" 3054list in a control method declaration. (Lin Ming) BZ 397 3055 3056Fixed a problem where two External declarations with the same name did not 3057cause an error (Lin Ming) BZ 509 3058 3059Implemented support for full TermArgs (adding Argx, Localx and method 3060invocation) for the ParameterData parameter to the LoadTable operator. (Lin 3061Ming) BZ 583,587 3062 3063---------------------------------------- 306419 December 2007. Summary of changes for version 20071219: 3065 30661) ACPI CA Core Subsystem: 3067 3068Implemented full support for deferred execution for the TermArg string 3069arguments for DataTableRegion. This enables forward references and full 3070operand resolution for the three string arguments. Similar to OperationRegion 3071deferred argument execution.) Lin Ming. BZ 430 3072 3073Implemented full argument resolution support for the BankValue argument to 3074BankField. Previously, only constants were supported, now any TermArg may be 3075used. Lin Ming BZ 387, 393 3076 3077Fixed a problem with AcpiGetDevices where the search of a branch of the 3078device tree could be terminated prematurely. In accordance with the ACPI 3079specification, the search down the current branch is terminated if a device 3080is both not present and not functional (instead of just not present.) Yakui 3081Zhao. 3082 3083Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly if 3084the underlying AML code changed the GPE enable registers. Now, any unknown 3085incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately disabled 3086instead of simply ignored. Rui Zhang. 3087 3088Fixed a problem with Index Fields where the Index register was incorrectly 3089limited to a maximum of 32 bits. Now any size may be used. 3090 3091Fixed a couple memory leaks associated with "implicit return" objects when 3092the AML Interpreter slack mode is enabled. Lin Ming BZ 349 3093 3094Example Code and Data Size: These are the sizes for the OS-independent 3095acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3096debug version of the code includes the debug output trace mechanism and has 3097a much larger code and data size. 3098 3099 Previous Release: 3100 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 3101 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 3102 Current Release: 3103 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 3104 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 3105 3106---------------------------------------- 310714 November 2007. Summary of changes for version 20071114: 3108 31091) ACPI CA Core Subsystem: 3110 3111Implemented event counters for each of the Fixed Events, the ACPI SCI 3112(interrupt) itself, and control methods executed. Named 3113AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively. These 3114should be useful for debugging and statistics. 3115 3116Implemented a new external interface, AcpiGetStatistics, to retrieve the 3117contents of the various event counters. Returns the current values for 3118AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and 3119AcpiMethodCount. The interface can be expanded in the future if new counters 3120are added. Device drivers should use this interface rather than access the 3121counters directly. 3122 3123Fixed a problem with the FromBCD and ToBCD operators. With some compilers, 3124the ShortDivide function worked incorrectly, causing problems with the BCD 3125functions with large input values. A truncation from 64-bit to 32-bit 3126inadvertently occurred. Internal BZ 435. Lin Ming 3127 3128Fixed a problem with Index references passed as method arguments. References 3129passed as arguments to control methods were dereferenced immediately (before 3130control was passed to the called method). The references are now correctly 3131passed directly to the called method. BZ 5389. Lin Ming 3132 3133Fixed a problem with CopyObject used in conjunction with the Index operator. 3134The reference was incorrectly dereferenced before the copy. The reference is 3135now correctly copied. BZ 5391. Lin Ming 3136 3137Fixed a problem with Control Method references within Package objects. These 3138references are now correctly generated. This completes the package 3139construction overhaul that began in version 20071019. 3140 3141Example Code and Data Size: These are the sizes for the OS-independent 3142acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3143debug version of the code includes the debug output trace mechanism and has 3144a much larger code and data size. 3145 3146 Previous Release: 3147 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 3148 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 3149 Current Release: 3150 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 3151 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 3152 3153 31542) iASL Compiler/Disassembler and Tools: 3155 3156The AcpiExec utility now installs handlers for all of the predefined 3157Operation Region types. New types supported are: PCI_Config, CMOS, and 3158PCIBARTarget. 3159 3160Fixed a problem with the 64-bit version of AcpiExec where the extended (64- 3161bit) address fields for the DSDT and FACS within the FADT were not being 3162used, causing truncation of the upper 32-bits of these addresses. Lin Ming 3163and Bob Moore 3164 3165---------------------------------------- 316619 October 2007. Summary of changes for version 20071019: 3167 31681) ACPI CA Core Subsystem: 3169 3170Fixed a problem with the Alias operator when the target of the alias is a 3171named ASL operator that opens a new scope -- Scope, Device, PowerResource, 3172Processor, and ThermalZone. In these cases, any children of the original 3173operator could not be accessed via the alias, potentially causing unexpected 3174AE_NOT_FOUND exceptions. (BZ 9067) 3175 3176Fixed a problem with the Package operator where all named references were 3177created as object references and left otherwise unresolved. According to the 3178ACPI specification, a Package can only contain Data Objects or references to 3179control methods. The implication is that named references to Data Objects 3180(Integer, Buffer, String, Package, BufferField, Field) should be resolved 3181immediately upon package creation. This is the approach taken with this 3182change. References to all other named objects (Methods, Devices, Scopes, 3183etc.) are all now properly created as reference objects. (BZ 5328) 3184 3185Reverted a change to Notify handling that was introduced in version 318620070508. This version changed the Notify handling from asynchronous to 3187fully synchronous (Device driver Notify handling with respect to the Notify 3188ASL operator). It was found that this change caused more problems than it 3189solved and was removed by most users. 3190 3191Fixed a problem with the Increment and Decrement operators where the type of 3192the target object could be unexpectedly and incorrectly changed. (BZ 353) 3193Lin Ming. 3194 3195Fixed a problem with the Load and LoadTable operators where the table 3196location within the namespace was ignored. Instead, the table was always 3197loaded into the root or current scope. Lin Ming. 3198 3199Fixed a problem with the Load operator when loading a table from a buffer 3200object. The input buffer was prematurely zeroed and/or deleted. (BZ 577) 3201 3202Fixed a problem with the Debug object where a store of a DdbHandle reference 3203object to the Debug object could cause a fault. 3204 3205Added a table checksum verification for the Load operator, in the case where 3206the load is from a buffer. (BZ 578). 3207 3208Implemented additional parameter validation for the LoadTable operator. The 3209length of the input strings SignatureString, OemIdString, and OemTableId are 3210now checked for maximum lengths. (BZ 582) Lin Ming. 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: 78.5K Code, 17.1K Data, 95.6K Total 3219 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 3220 Current Release: 3221 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 3222 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 3223 3224 32252) iASL Compiler/Disassembler: 3226 3227Fixed a problem where if a single file was specified and the file did not 3228exist, no error message was emitted. (Introduced with wildcard support in 3229version 20070917.) 3230 3231---------------------------------------- 323219 September 2007. Summary of changes for version 20070919: 3233 32341) ACPI CA Core Subsystem: 3235 3236Designed and implemented new external interfaces to install and remove 3237handlers for ACPI table-related events. Current events that are defined are 3238LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as 3239they are dynamically loaded and unloaded. See AcpiInstallTableHandler and 3240AcpiRemoveTableHandler. (Lin Ming and Bob Moore) 3241 3242Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag 3243(acpi_serialized option on Linux) could cause some systems to hang during 3244initialization. (Bob Moore) BZ 8171 3245 3246Fixed a problem where objects of certain types (Device, ThermalZone, 3247Processor, PowerResource) can be not found if they are declared and 3248referenced from within the same control method (Lin Ming) BZ 341 3249 3250Example Code and Data Size: These are the sizes for the OS-independent 3251acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3252debug version of the code includes the debug output trace mechanism and has 3253a much larger code and data size. 3254 3255 Previous Release: 3256 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 3257 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 3258 Current Release: 3259 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 3260 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 3261 3262 32632) iASL Compiler/Disassembler: 3264 3265Implemented support to allow multiple files to be compiled/disassembled in a 3266single invocation. This includes command line wildcard support for both the 3267Windows and Unix versions of the compiler. This feature simplifies the 3268disassembly and compilation of multiple ACPI tables in a single directory. 3269 3270---------------------------------------- 327108 May 2007. Summary of changes for version 20070508: 3272 32731) ACPI CA Core Subsystem: 3274 3275Implemented a Microsoft compatibility design change for the handling of the 3276Notify AML operator. Previously, notify handlers were dispatched and 3277executed completely asynchronously in a deferred thread. The new design 3278still executes the notify handlers in a different thread, but the original 3279thread that executed the Notify() now waits at a synchronization point for 3280the notify handler to complete. Some machines depend on a synchronous Notify 3281operator in order to operate correctly. 3282 3283Implemented support to allow Package objects to be passed as method 3284arguments to the external AcpiEvaluateObject interface. Previously, this 3285would return the AE_NOT_IMPLEMENTED exception. This feature had not been 3286implemented since there were no reserved control methods that required it 3287until recently. 3288 3289Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs that 3290contained invalid non-zero values in reserved fields could cause later 3291failures because these fields have meaning in later revisions of the FADT. 3292For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The fields 3293are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.) 3294 3295Fixed a problem where the Global Lock handle was not properly updated if a 3296thread that acquired the Global Lock via executing AML code then attempted 3297to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by Joe 3298Liu. 3299 3300Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list 3301could be corrupted if the interrupt being removed was at the head of the 3302list. Reported by Linn Crosetto. 3303 3304Example Code and Data Size: These are the sizes for the OS-independent 3305acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3306debug version of the code includes the debug output trace mechanism and has 3307a much larger code and data size. 3308 3309 Previous Release: 3310 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 3311 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 3312 Current Release: 3313 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 3314 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 3315 3316---------------------------------------- 331720 March 2007. Summary of changes for version 20070320: 3318 33191) ACPI CA Core Subsystem: 3320 3321Implemented a change to the order of interpretation and evaluation of AML 3322operand objects within the AML interpreter. The interpreter now evaluates 3323operands in the order that they appear in the AML stream (and the 3324corresponding ASL code), instead of in the reverse order (after the entire 3325operand list has been parsed). The previous behavior caused several subtle 3326incompatibilities with the Microsoft AML interpreter as well as being 3327somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov. 3328 3329Implemented a change to the ACPI Global Lock support. All interfaces to the 3330global lock now allow the same thread to acquire the lock multiple times. 3331This affects the AcpiAcquireGlobalLock external interface to the global lock 3332as well as the internal use of the global lock to support AML fields -- a 3333control method that is holding the global lock can now simultaneously access 3334AML fields that require global lock protection. Previously, in both cases, 3335this would have resulted in an AE_ALREADY_ACQUIRED exception. The change to 3336AcpiAcquireGlobalLock is of special interest to drivers for the Embedded 3337Controller. There is no change to the behavior of the AML Acquire operator, 3338as this can already be used to acquire a mutex multiple times by the same 3339thread. BZ 8066. With assistance from Alexey Starikovskiy. 3340 3341Fixed a problem where invalid objects could be referenced in the AML 3342Interpreter after error conditions. During operand evaluation, ensure that 3343the internal "Return Object" field is cleared on error and only valid 3344pointers are stored there. Caused occasional access to deleted objects that 3345resulted in "large reference count" warning messages. Valery Podrezov. 3346 3347Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur on 3348deeply nested control method invocations. BZ 7873, local BZ 487. Valery 3349Podrezov. 3350 3351Fixed an internal problem with the handling of result objects on the 3352interpreter result stack. BZ 7872. Valery Podrezov. 3353 3354Removed obsolete code that handled the case where AML_NAME_OP is the target 3355of a reference (Reference.Opcode). This code was no longer necessary. BZ 33567874. Valery Podrezov. 3357 3358Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This was a 3359remnant from the previously discontinued 16-bit support. 3360 3361Example Code and Data Size: These are the sizes for the OS-independent 3362acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3363debug version of the code includes the debug output trace mechanism and has 3364a much larger code and data size. 3365 3366 Previous Release: 3367 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 3368 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 3369 Current Release: 3370 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 3371 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 3372 3373---------------------------------------- 337426 January 2007. Summary of changes for version 20070126: 3375 33761) ACPI CA Core Subsystem: 3377 3378Added the 2007 copyright to all module headers and signons. This affects 3379virtually every file in the ACPICA core subsystem, the iASL compiler, and 3380the utilities. 3381 3382Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable 3383during a table load. A bad pointer was passed in the case where the DSDT is 3384overridden, causing a fault in this case. 3385 3386Example Code and Data Size: These are the sizes for the OS-independent 3387acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3388debug version of the code includes the debug output trace mechanism and has 3389a much larger code and data size. 3390 3391 Previous Release: 3392 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 3393 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 3394 Current Release: 3395 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 3396 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 3397 3398---------------------------------------- 339915 December 2006. Summary of changes for version 20061215: 3400 34011) ACPI CA Core Subsystem: 3402 3403Support for 16-bit ACPICA has been completely removed since it is no longer 3404necessary and it clutters the code. All 16-bit macros, types, and 3405conditional compiles have been removed, cleaning up and simplifying the code 3406across the entire subsystem. DOS support is no longer needed since the 3407bootable Linux firmware kit is now available. 3408 3409The handler for the Global Lock is now removed during AcpiTerminate to 3410enable a clean subsystem restart, via the implementation of the 3411AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz, 3412HP) 3413 3414Implemented enhancements to the multithreading support within the debugger 3415to enable improved multithreading debugging and evaluation of the subsystem. 3416(Valery Podrezov) 3417 3418Debugger: Enhanced the Statistics/Memory command to emit the total (maximum) 3419memory used during the execution, as well as the maximum memory consumed by 3420each of the various object types. (Valery Podrezov) 3421 3422Example Code and Data Size: These are the sizes for the OS-independent 3423acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3424debug version of the code includes the debug output trace mechanism and has 3425a much larger code and data size. 3426 3427 Previous Release: 3428 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 3429 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 3430 Current Release: 3431 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 3432 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 3433 3434 34352) iASL Compiler/Disassembler and Tools: 3436 3437AcpiExec: Implemented a new option (-m) to display full memory use 3438statistics upon subsystem/program termination. (Valery Podrezov) 3439 3440---------------------------------------- 344109 November 2006. Summary of changes for version 20061109: 3442 34431) ACPI CA Core Subsystem: 3444 3445Optimized the Load ASL operator in the case where the source operand is an 3446operation region. Simply map the operation region memory, instead of 3447performing a bytewise read. (Region must be of type SystemMemory, see 3448below.) 3449 3450Fixed the Load ASL operator for the case where the source operand is a 3451region field. A buffer object is also allowed as the source operand. BZ 480 3452 3453Fixed a problem where the Load ASL operator allowed the source operand to be 3454an operation region of any type. It is now restricted to regions of type 3455SystemMemory, as per the ACPI specification. BZ 481 3456 3457Additional cleanup and optimizations for the new Table Manager code. 3458 3459AcpiEnable will now fail if all of the required ACPI tables are not loaded 3460(FADT, FACS, DSDT). BZ 477 3461 3462Added #pragma pack(8/4) to acobject.h to ensure that the structures in this 3463header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been 3464manually optimized to be aligned and will not work if it is byte-packed. 3465 3466Example Code and Data Size: These are the sizes for the OS-independent 3467acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3468debug version of the code includes the debug output trace mechanism and has 3469a much larger code and data size. 3470 3471 Previous Release: 3472 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 3473 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 3474 Current Release: 3475 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 3476 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 3477 3478 34792) iASL Compiler/Disassembler and Tools: 3480 3481Fixed a problem where the presence of the _OSI predefined control method 3482within complex expressions could cause an internal compiler error. 3483 3484AcpiExec: Implemented full region support for multiple address spaces. 3485SpaceId is now part of the REGION object. BZ 429 3486 3487---------------------------------------- 348811 October 2006. Summary of changes for version 20061011: 3489 34901) ACPI CA Core Subsystem: 3491 3492Completed an AML interpreter performance enhancement for control method 3493execution. Previously a 2-pass parse/execution, control methods are now 3494completely parsed and executed in a single pass. This improves overall 3495interpreter performance by ~25%, reduces code size, and reduces CPU stack 3496use. (Valery Podrezov + interpreter changes in version 20051202 that 3497eliminated namespace loading during the pass one parse.) 3498 3499Implemented _CID support for PCI Root Bridge detection. If the _HID does not 3500match the predefined PCI Root Bridge IDs, the _CID list (if present) is now 3501obtained and also checked for an ID match. 3502 3503Implemented additional support for the PCI _ADR execution: upsearch until a 3504device scope is found before executing _ADR. This allows PCI_Config 3505operation regions to be declared locally within control methods underneath 3506PCI device objects. 3507 3508Fixed a problem with a possible race condition between threads executing 3509AcpiWalkNamespace and the AML interpreter. This condition was removed by 3510modifying AcpiWalkNamespace to (by default) ignore all temporary namespace 3511entries created during any concurrent control method execution. An 3512additional namespace race condition is known to exist between 3513AcpiWalkNamespace and the Load/Unload ASL operators and is still under 3514investigation. 3515 3516Restructured the AML ParseLoop function, breaking it into several 3517subfunctions in order to reduce CPU stack use and improve maintainability. 3518(Mikhail Kouzmich) 3519 3520AcpiGetHandle: Fix for parameter validation to detect invalid combinations 3521of prefix handle and pathname. BZ 478 3522 3523Example Code and Data Size: These are the sizes for the OS-independent 3524acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3525debug version of the code includes the debug output trace mechanism and has 3526a much larger code and data size. 3527 3528 Previous Release: 3529 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 3530 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 3531 Current Release: 3532 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 3533 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 3534 35352) iASL Compiler/Disassembler and Tools: 3536 3537Ported the -g option (get local ACPI tables) to the new ACPICA Table Manager 3538to restore original behavior. 3539 3540---------------------------------------- 354127 September 2006. Summary of changes for version 20060927: 3542 35431) ACPI CA Core Subsystem: 3544 3545Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister. 3546These functions now use a spinlock for mutual exclusion and the interrupt 3547level indication flag is not needed. 3548 3549Fixed a problem with the Global Lock where the lock could appear to be 3550obtained before it is actually obtained. The global lock semaphore was 3551inadvertently created with one unit instead of zero units. (BZ 464) Fiodor 3552Suietov. 3553 3554Fixed a possible memory leak and fault in AcpiExResolveObjectToValue during 3555a read from a buffer or region field. (BZ 458) Fiodor Suietov. 3556 3557Example Code and Data Size: These are the sizes for the OS-independent 3558acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3559debug version of the code includes the debug output trace mechanism and has 3560a much larger code and data size. 3561 3562 Previous Release: 3563 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 3564 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 3565 Current Release: 3566 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 3567 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 3568 3569 35702) iASL Compiler/Disassembler and Tools: 3571 3572Fixed a compilation problem with the pre-defined Resource Descriptor field 3573names where an "object does not exist" error could be incorrectly generated 3574if the parent ResourceTemplate pathname places the template within a 3575different namespace scope than the current scope. (BZ 7212) 3576 3577Fixed a problem where the compiler could hang after syntax errors detected 3578in an ElseIf construct. (BZ 453) 3579 3580Fixed a problem with the AmlFilename parameter to the DefinitionBlock() 3581operator. An incorrect output filename was produced when this parameter was 3582a null string (""). Now, the original input filename is used as the AML 3583output filename, with an ".aml" extension. 3584 3585Implemented a generic batch command mode for the AcpiExec utility (execute 3586any AML debugger command) (Valery Podrezov). 3587 3588---------------------------------------- 358912 September 2006. Summary of changes for version 20060912: 3590 35911) ACPI CA Core Subsystem: 3592 3593Enhanced the implementation of the "serialized mode" of the interpreter 3594(enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is 3595specified, instead of creating a serialization semaphore per control method, 3596the interpreter lock is simply no longer released before a blocking 3597operation during control method execution. This effectively makes the AML 3598Interpreter single-threaded. The overhead of a semaphore per-method is 3599eliminated. 3600 3601Fixed a regression where an error was no longer emitted if a control method 3602attempts to create 2 objects of the same name. This once again returns 3603AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism that 3604will dynamically serialize the control method to possible prevent future 3605errors. (BZ 440) 3606 3607Integrated a fix for a problem with PCI Express HID detection in the PCI 3608Config Space setup procedure. (BZ 7145) 3609 3610Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the 3611AcpiHwInitialize function - the FADT registers are now validated when the 3612table is loaded. 3613 3614Added two new warnings during FADT verification - 1) if the FADT is larger 3615than the largest known FADT version, and 2) if there is a mismatch between a 361632-bit block address and the 64-bit X counterpart (when both are non-zero.) 3617 3618Example Code and Data Size: These are the sizes for the OS-independent 3619acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3620debug version of the code includes the debug output trace mechanism and has 3621a much larger code and data size. 3622 3623 Previous Release: 3624 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 3625 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 3626 Current Release: 3627 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 3628 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 3629 3630 36312) iASL Compiler/Disassembler and Tools: 3632 3633Fixed a problem with the implementation of the Switch() operator where the 3634temporary variable was declared too close to the actual Switch, instead of 3635at method level. This could cause a problem if the Switch() operator is 3636within a while loop, causing an error on the second iteration. (BZ 460) 3637 3638Disassembler - fix for error emitted for unknown type for target of scope 3639operator. Now, ignore it and continue. 3640 3641Disassembly of an FADT now verifies the input FADT and reports any errors 3642found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs. 3643 3644Disassembly of raw data buffers with byte initialization data now prefixes 3645each output line with the current buffer offset. 3646 3647Disassembly of ASF! table now includes all variable-length data fields at 3648the end of some of the subtables. 3649 3650The disassembler now emits a comment if a buffer appears to be a 3651ResourceTemplate, but cannot be disassembled as such because the EndTag does 3652not appear at the very end of the buffer. 3653 3654AcpiExec - Added the "-t" command line option to enable the serialized mode 3655of the AML interpreter. 3656 3657---------------------------------------- 365831 August 2006. Summary of changes for version 20060831: 3659 36601) ACPI CA Core Subsystem: 3661 3662Miscellaneous fixes for the Table Manager: 3663- Correctly initialize internal common FADT for all 64-bit "X" fields 3664- Fixed a couple table mapping issues during table load 3665- Fixed a couple alignment issues for IA64 3666- Initialize input array to zero in AcpiInitializeTables 3667- Additional parameter validation for AcpiGetTable, AcpiGetTableHeader, 3668AcpiGetTableByIndex 3669 3670Change for GPE support: when a "wake" GPE is received, all wake GPEs are now 3671immediately disabled to prevent the waking GPE from firing again and to 3672prevent other wake GPEs from interrupting the wake process. 3673 3674Added the AcpiGpeCount global that tracks the number of processed GPEs, to 3675be used for debugging systems with a large number of ACPI interrupts. 3676 3677Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in 3678both the ACPICA headers and the disassembler. 3679 3680Example Code and Data Size: These are the sizes for the OS-independent 3681acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3682debug version of the code includes the debug output trace mechanism and has 3683a much larger code and data size. 3684 3685 Previous Release: 3686 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 3687 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 3688 Current Release: 3689 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 3690 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 3691 3692 36932) iASL Compiler/Disassembler and Tools: 3694 3695Disassembler support for the DMAR ACPI table. 3696 3697---------------------------------------- 369823 August 2006. Summary of changes for version 20060823: 3699 37001) ACPI CA Core Subsystem: 3701 3702The Table Manager component has been completely redesigned and 3703reimplemented. The new design is much simpler, and reduces the overall code 3704and data size of the kernel-resident ACPICA by approximately 5%. Also, it is 3705now possible to obtain the ACPI tables very early during kernel 3706initialization, even before dynamic memory management is initialized. 3707(Alexey Starikovskiy, Fiodor Suietov, Bob Moore) 3708 3709Obsolete ACPICA interfaces: 3710 3711- AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel init 3712time). 3713- AcpiLoadTable: Not needed. 3714- AcpiUnloadTable: Not needed. 3715 3716New ACPICA interfaces: 3717 3718- AcpiInitializeTables: Must be called before the table manager can be used. 3719- AcpiReallocateRootTable: Used to transfer the root table to dynamically 3720allocated memory after it becomes available. 3721- AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI tables 3722in the RSDT/XSDT. 3723 3724Other ACPICA changes: 3725 3726- AcpiGetTableHeader returns the actual mapped table header, not a copy. Use 3727AcpiOsUnmapMemory to free this mapping. 3728- AcpiGetTable returns the actual mapped table. The mapping is managed 3729internally and must not be deleted by the caller. Use of this interface 3730causes no additional dynamic memory allocation. 3731- AcpiFindRootPointer: Support for physical addressing has been eliminated, 3732it appeared to be unused. 3733- The interface to AcpiOsMapMemory has changed to be consistent with the 3734other allocation interfaces. 3735- The interface to AcpiOsGetRootPointer has changed to eliminate unnecessary 3736parameters. 3737- ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on 64- 3738bit platforms. Was previously 64 bits on all platforms. 3739- The interface to the ACPI Global Lock acquire/release macros have changed 3740slightly since ACPICA no longer keeps a local copy of the FACS with a 3741constructed pointer to the actual global lock. 3742 3743Porting to the new table manager: 3744 3745- AcpiInitializeTables: Must be called once, and can be called anytime 3746during the OS initialization process. It allows the host to specify an area 3747of memory to be used to store the internal version of the RSDT/XSDT (root 3748table). This allows the host to access ACPI tables before memory management 3749is initialized and running. 3750- AcpiReallocateRootTable: Can be called after memory management is running 3751to copy the root table to a dynamically allocated array, freeing up the 3752scratch memory specified in the call to AcpiInitializeTables. 3753- AcpiSubsystemInitialize: This existing interface is independent of the 3754Table Manager, and does not have to be called before the Table Manager can 3755be used, it only must be called before the rest of ACPICA can be used. 3756- ACPI Tables: Some changes have been made to the names and structure of the 3757actbl.h and actbl1.h header files and may require changes to existing code. 3758For example, bitfields have been completely removed because of their lack of 3759portability across C compilers. 3760- Update interfaces to the Global Lock acquire/release macros if local 3761versions are used. (see acwin.h) 3762 3763Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c 3764 3765New files: tbfind.c 3766 3767Example Code and Data Size: These are the sizes for the OS-independent 3768acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3769debug version of the code includes the debug output trace mechanism and has 3770a much larger code and data size. 3771 3772 Previous Release: 3773 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 3774 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 3775 Current Release: 3776 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 3777 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 3778 3779 37802) iASL Compiler/Disassembler and Tools: 3781 3782No changes for this release. 3783 3784---------------------------------------- 378521 July 2006. Summary of changes for version 20060721: 3786 37871) ACPI CA Core Subsystem: 3788 3789The full source code for the ASL test suite used to validate the iASL 3790compiler and the ACPICA core subsystem is being released with the ACPICA 3791source for the first time. The source is contained in a separate package and 3792consists of over 1100 files that exercise all ASL/AML operators. The package 3793should appear on the Intel/ACPI web site shortly. (Valery Podrezov, Fiodor 3794Suietov) 3795 3796Completed a new design and implementation for support of the ACPI Global 3797Lock. On the OS side, the global lock is now treated as a standard AML 3798mutex. Previously, multiple OS threads could "acquire" the global lock 3799simultaneously. However, this could cause the BIOS to be starved out of the 3800lock - especially in cases such as the Embedded Controller driver where 3801there is a tight coupling between the OS and the BIOS. 3802 3803Implemented an optimization for the ACPI Global Lock interrupt mechanism. 3804The Global Lock interrupt handler no longer queues the execution of a 3805separate thread to signal the global lock semaphore. Instead, the semaphore 3806is signaled directly from the interrupt handler. 3807 3808Implemented support within the AML interpreter for package objects that 3809contain a larger AML length (package list length) than the package element 3810count. In this case, the length of the package is truncated to match the 3811package element count. Some BIOS code apparently modifies the package length 3812on the fly, and this change supports this behavior. Provides compatibility 3813with the MS AML interpreter. (With assistance from Fiodor Suietov) 3814 3815Implemented a temporary fix for the BankValue parameter of a Bank Field to 3816support all constant values, now including the Zero and One opcodes. 3817Evaluation of this parameter must eventually be converted to a full TermArg 3818evaluation. A not-implemented error is now returned (temporarily) for non- 3819constant values for this parameter. 3820 3821Fixed problem reports (Fiodor Suietov) integrated: 3822- Fix for premature object deletion after CopyObject on Operation Region (BZ 3823350) 3824 3825Example Code and Data Size: These are the sizes for the OS-independent 3826acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3827debug version of the code includes the debug output trace mechanism and has 3828a much larger code and data size. 3829 3830 Previous Release: 3831 Non-Debug Version: 80.7K Code, 18.0K Data, 98.7K Total 3832 Debug Version: 160.9K Code, 65.1K Data, 226.0K Total 3833 Current Release: 3834 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 3835 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 3836 3837 38382) iASL Compiler/Disassembler and Tools: 3839 3840No changes for this release. 3841 3842---------------------------------------- 384307 July 2006. Summary of changes for version 20060707: 3844 38451) ACPI CA Core Subsystem: 3846 3847Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers 3848that do not allow the initialization of address pointers within packed 3849structures - even though the hardware itself may support misaligned 3850transfers. Some of the debug data structures are packed by default to 3851minimize size. 3852 3853Added an error message for the case where AcpiOsGetThreadId() returns zero. 3854A non-zero value is required by the core ACPICA code to ensure the proper 3855operation of AML mutexes and recursive control methods. 3856 3857The DSDT is now the only ACPI table that determines whether the AML 3858interpreter is in 32-bit or 64-bit mode. Not really a functional change, but 3859the hooks for per-table 32/64 switching have been removed from the code. A 3860clarification to the ACPI specification is forthcoming in ACPI 3.0B. 3861 3862Fixed a possible leak of an OwnerID in the error path of 3863AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID 3864deletion to a single place in AcpiTbUninstallTable to correct possible leaks 3865when using the AcpiTbDeleteTablesByType interface (with assistance from 3866Lance Ortiz.) 3867 3868Fixed a problem with Serialized control methods where the semaphore 3869associated with the method could be over-signaled after multiple method 3870invocations. 3871 3872Fixed two issues with the locking of the internal namespace data structure. 3873Both the Unload() operator and AcpiUnloadTable interface now lock the 3874namespace during the namespace deletion associated with the table unload 3875(with assistance from Linn Crosetto.) 3876 3877Fixed problem reports (Valery Podrezov) integrated: 3878- Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426) 3879 3880Fixed problem reports (Fiodor Suietov) integrated: 3881- Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369) 3882- On Address Space handler deletion, needless deactivation call (BZ 374) 3883- AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ 375) 3884- Possible memory leak, Notify sub-objects of Processor, Power, ThermalZone 3885(BZ 376) 3886- AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378) 3887- Minimum Length of RSDT should be validated (BZ 379) 3888- AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no 3889Handler (BZ (380) 3890- AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type loaded 3891(BZ 381) 3892 3893Example Code and Data Size: These are the sizes for the OS-independent 3894acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3895debug version of the code includes the debug output trace mechanism and has 3896a much larger code and data size. 3897 3898 Previous Release: 3899 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 3900 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 3901 Current Release: 3902 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 3903 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 3904 3905 39062) iASL Compiler/Disassembler and Tools: 3907 3908Fixed problem reports: 3909Compiler segfault when ASL contains a long (>1024) String declaration (BZ 3910436) 3911 3912---------------------------------------- 391323 June 2006. Summary of changes for version 20060623: 3914 39151) ACPI CA Core Subsystem: 3916 3917Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This 3918allows the type to be customized to the host OS for improved efficiency 3919(since a spinlock is usually a very small object.) 3920 3921Implemented support for "ignored" bits in the ACPI registers. According to 3922the ACPI specification, these bits should be preserved when writing the 3923registers via a read/modify/write cycle. There are 3 bits preserved in this 3924manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11]. 3925 3926Implemented the initial deployment of new OSL mutex interfaces. Since some 3927host operating systems have separate mutex and semaphore objects, this 3928feature was requested. The base code now uses mutexes (and the new mutex 3929interfaces) wherever a binary semaphore was used previously. However, for 3930the current release, the mutex interfaces are defined as macros to map them 3931to the existing semaphore interfaces. Therefore, no OSL changes are required 3932at this time. (See acpiosxf.h) 3933 3934Fixed several problems with the support for the control method SyncLevel 3935parameter. The SyncLevel now works according to the ACPI specification and 3936in concert with the Mutex SyncLevel parameter, since the current SyncLevel 3937is a property of the executing thread. Mutual exclusion for control methods 3938is now implemented with a mutex instead of a semaphore. 3939 3940Fixed three instances of the use of the C shift operator in the bitfield 3941support code (exfldio.c) to avoid the use of a shift value larger than the 3942target data width. The behavior of C compilers is undefined in this case and 3943can cause unpredictable results, and therefore the case must be detected and 3944avoided. (Fiodor Suietov) 3945 3946Added an info message whenever an SSDT or OEM table is loaded dynamically 3947via the Load() or LoadTable() ASL operators. This should improve debugging 3948capability since it will show exactly what tables have been loaded (beyond 3949the tables present in the RSDT/XSDT.) 3950 3951Example Code and Data Size: These are the sizes for the OS-independent 3952acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3953debug version of the code includes the debug output trace mechanism and has 3954a much larger code and data size. 3955 3956 Previous Release: 3957 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 3958 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 3959 Current Release: 3960 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 3961 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 3962 3963 39642) iASL Compiler/Disassembler and Tools: 3965 3966No changes for this release. 3967 3968---------------------------------------- 396908 June 2006. Summary of changes for version 20060608: 3970 39711) ACPI CA Core Subsystem: 3972 3973Converted the locking mutex used for the ACPI hardware to a spinlock. This 3974change should eliminate all problems caused by attempting to acquire a 3975semaphore at interrupt level, and it means that all ACPICA external 3976interfaces that directly access the ACPI hardware can be safely called from 3977interrupt level. OSL code that implements the semaphore interfaces should be 3978able to eliminate any workarounds for being called at interrupt level. 3979 3980Fixed a regression introduced in 20060526 where the ACPI device 3981initialization could be prematurely aborted with an AE_NOT_FOUND if a device 3982did not have an optional _INI method. 3983 3984Fixed an IndexField issue where a write to the Data Register should be 3985limited in size to the AccessSize (width) of the IndexField itself. (BZ 433, 3986Fiodor Suietov) 3987 3988Fixed problem reports (Valery Podrezov) integrated: 3989- Allow store of ThermalZone objects to Debug object (BZ 5369/5370) 3990 3991Fixed problem reports (Fiodor Suietov) integrated: 3992- AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364) 3993 3994Removed four global mutexes that were obsolete and were no longer being 3995used. 3996 3997Example Code and Data Size: These are the sizes for the OS-independent 3998acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3999debug version of the code includes the debug output trace mechanism and has 4000a much larger code and data size. 4001 4002 Previous Release: 4003 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 4004 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 4005 Current Release: 4006 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 4007 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 4008 4009 40102) iASL Compiler/Disassembler and Tools: 4011 4012Fixed a fault when using -g option (get tables from registry) on Windows 4013machines. 4014 4015Fixed problem reports integrated: 4016- Generate error if CreateField NumBits parameter is zero. (BZ 405) 4017- Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor 4018Suietov) 4019- Global table revision override (-r) is ignored (BZ 413) 4020 4021---------------------------------------- 402226 May 2006. Summary of changes for version 20060526: 4023 40241) ACPI CA Core Subsystem: 4025 4026Restructured, flattened, and simplified the internal interfaces for 4027namespace object evaluation - resulting in smaller code, less CPU stack use, 4028and fewer interfaces. (With assistance from Mikhail Kouzmich) 4029 4030Fixed a problem with the CopyObject operator where the first parameter was 4031not typed correctly for the parser, interpreter, compiler, and disassembler. 4032Caused various errors and unexpected behavior. 4033 4034Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits 4035produced incorrect results with some C compilers. Since the behavior of C 4036compilers when the shift value is larger than the datatype width is 4037apparently not well defined, the interpreter now detects this condition and 4038simply returns zero as expected in all such cases. (BZ 395) 4039 4040Fixed problem reports (Valery Podrezov) integrated: 4041- Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329) 4042- Allow interpreter to handle nested method declarations (BZ 5361) 4043 4044Fixed problem reports (Fiodor Suietov) integrated: 4045- AcpiTerminate doesn't free debug memory allocation list objects (BZ 355) 4046- After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ 356) 4047- AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357) 4048- Resource Manager should return AE_TYPE for non-device objects (BZ 358) 4049- Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359) 4050- Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360) 4051- Incomplete cleanup branch in AcpiPsParseAml (BZ 361) 4052- Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362) 4053- AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ 365) 4054- Status of the Global Initialization Handler call not used (BZ 366) 4055- Incorrect object parameter to Global Initialization Handler (BZ 367) 4056 4057Example Code and Data Size: These are the sizes for the OS-independent 4058acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4059debug version of the code includes the debug output trace mechanism and has 4060a much larger code and data size. 4061 4062 Previous Release: 4063 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 4064 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 4065 Current Release: 4066 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 4067 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 4068 4069 40702) iASL Compiler/Disassembler and Tools: 4071 4072Modified the parser to allow the names IO, DMA, and IRQ to be used as 4073namespace identifiers with no collision with existing resource descriptor 4074macro names. This provides compatibility with other ASL compilers and is 4075most useful for disassembly/recompilation of existing tables without parse 4076errors. (With assistance from Thomas Renninger) 4077 4078Disassembler: fixed an incorrect disassembly problem with the 4079DataTableRegion and CopyObject operators. Fixed a possible fault during 4080disassembly of some Alias operators. 4081 4082---------------------------------------- 408312 May 2006. Summary of changes for version 20060512: 4084 40851) ACPI CA Core Subsystem: 4086 4087Replaced the AcpiOsQueueForExecution interface with a new interface named 4088AcpiOsExecute. The major difference is that the new interface does not have 4089a Priority parameter, this appeared to be useless and has been replaced by a 4090Type parameter. The Type tells the host what type of execution is being 4091requested, such as global lock handler, notify handler, GPE handler, etc. 4092This allows the host to queue and execute the request as appropriate for the 4093request type, possibly using different work queues and different priorities 4094for the various request types. This enables fixes for multithreading 4095deadlock problems such as BZ #5534, and will require changes to all existing 4096OS interface layers. (Alexey Starikovskiy and Bob Moore) 4097 4098Fixed a possible memory leak associated with the support for the so-called 4099"implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor 4100Suietov) 4101 4102Fixed a problem with the Load() operator where a table load from an 4103operation region could overwrite an internal table buffer by up to 7 bytes 4104and cause alignment faults on IPF systems. (With assistance from Luming Yu) 4105 4106Example Code and Data Size: These are the sizes for the OS-independent 4107acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4108debug version of the code includes the debug output trace mechanism and has 4109a much larger code and data size. 4110 4111 Previous Release: 4112 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 4113 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 4114 Current Release: 4115 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 4116 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 4117 4118 4119 41202) iASL Compiler/Disassembler and Tools: 4121 4122Disassembler: Implemented support to cross reference the internal namespace 4123and automatically generate ASL External() statements for symbols not defined 4124within the current table being disassembled. This will simplify the 4125disassembly and recompilation of interdependent tables such as SSDTs since 4126these statements will no longer have to be added manually. 4127 4128Disassembler: Implemented experimental support to automatically detect 4129invocations of external control methods and generate appropriate External() 4130statements. This is problematic because the AML cannot be correctly parsed 4131until the number of arguments for each control method is known. Currently, 4132standalone method invocations and invocations as the source operand of a 4133Store() statement are supported. 4134 4135Disassembler: Implemented support for the ASL pseudo-operators LNotEqual, 4136LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()), 4137LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code 4138more readable and likely closer to the original ASL source. 4139 4140---------------------------------------- 414121 April 2006. Summary of changes for version 20060421: 4142 41431) ACPI CA Core Subsystem: 4144 4145Removed a device initialization optimization introduced in 20051216 where 4146the _STA method was not run unless an _INI was also present for the same 4147device. This optimization could cause problems because it could allow _INI 4148methods to be run within a not-present device subtree. (If a not-present 4149device had no _INI, _STA would not be run, the not-present status would not 4150be discovered, and the children of the device would be incorrectly 4151traversed.) 4152 4153Implemented a new _STA optimization where namespace subtrees that do not 4154contain _INI are identified and ignored during device initialization. 4155Selectively running _STA can significantly improve boot time on large 4156machines (with assistance from Len Brown.) 4157 4158Implemented support for the device initialization case where the returned 4159_STA flags indicate a device not-present but functioning. In this case, _INI 4160is not run, but the device children are examined for presence, as per the 4161ACPI specification. 4162 4163Implemented an additional change to the IndexField support in order to 4164conform to MS behavior. The value written to the Index Register is not 4165simply a byte offset, it is a byte offset in units of the access width of 4166the parent Index Field. (Fiodor Suietov) 4167 4168Defined and deployed a new OSL interface, AcpiOsValidateAddress. This 4169interface is called during the creation of all AML operation regions, and 4170allows the host OS to exert control over what addresses it will allow the 4171AML code to access. Operation Regions whose addresses are disallowed will 4172cause a runtime exception when they are actually accessed (will not affect 4173or abort table loading.) See oswinxf or osunixxf for an example 4174implementation. 4175 4176Defined and deployed a new OSL interface, AcpiOsValidateInterface. This 4177interface allows the host OS to match the various "optional" 4178interface/behavior strings for the _OSI predefined control method as 4179appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf 4180for an example implementation. 4181 4182Restructured and corrected various problems in the exception handling code 4183paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod 4184(with assistance from Takayoshi Kochi.) 4185 4186Modified the Linux source converter to ignore quoted string literals while 4187converting identifiers from mixed to lower case. This will correct problems 4188with the disassembler and other areas where such strings must not be 4189modified. 4190 4191The ACPI_FUNCTION_* macros no longer require quotes around the function 4192name. This allows the Linux source converter to convert the names, now that 4193the converter ignores quoted strings. 4194 4195Example Code and Data Size: These are the sizes for the OS-independent 4196acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4197debug version of the code includes the debug output trace mechanism and has 4198a much larger code and data size. 4199 4200 Previous Release: 4201 4202 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 4203 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 4204 Current Release: 4205 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 4206 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 4207 4208 42092) iASL Compiler/Disassembler and Tools: 4210 4211Implemented 3 new warnings for iASL, and implemented multiple warning levels 4212(w2 flag). 4213 42141) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is not 4215WAIT_FOREVER (0xFFFF) and the code does not examine the return value to 4216check for the possible timeout, a warning is issued. 4217 42182) Useless operators: If an ASL operator does not specify an optional target 4219operand and it also does not use the function return value from the 4220operator, a warning is issued since the operator effectively does nothing. 4221 42223) Unreferenced objects: If a namespace object is created, but never 4223referenced, a warning is issued. This is a warning level 2 since there are 4224cases where this is ok, such as when a secondary table is loaded that uses 4225the unreferenced objects. Even so, care is taken to only flag objects that 4226don't look like they will ever be used. For example, the reserved methods 4227(starting with an underscore) are usually not referenced because it is 4228expected that the OS will invoke them. 4229 4230---------------------------------------- 423131 March 2006. Summary of changes for version 20060331: 4232 42331) ACPI CA Core Subsystem: 4234 4235Implemented header file support for the following additional ACPI tables: 4236ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this support, 4237all current and known ACPI tables are now defined in the ACPICA headers and 4238are available for use by device drivers and other software. 4239 4240Implemented support to allow tables that contain ACPI names with invalid 4241characters to be loaded. Previously, this would cause the table load to 4242fail, but since there are several known cases of such tables on existing 4243machines, this change was made to enable ACPI support for them. Also, this 4244matches the behavior of the Microsoft ACPI implementation. 4245 4246Fixed a couple regressions introduced during the memory optimization in the 424720060317 release. The namespace node definition required additional 4248reorganization and an internal datatype that had been changed to 8-bit was 4249restored to 32-bit. (Valery Podrezov) 4250 4251Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState 4252could be passed through to AcpiOsReleaseObject which is unexpected. Such 4253null pointers are now trapped and ignored, matching the behavior of the 4254previous implementation before the deployment of AcpiOsReleaseObject. 4255(Valery Podrezov, Fiodor Suietov) 4256 4257Fixed a memory mapping leak during the deletion of a SystemMemory operation 4258region where a cached memory mapping was not deleted. This became a 4259noticeable problem for operation regions that are defined within frequently 4260used control methods. (Dana Meyers) 4261 4262Reorganized the ACPI table header files into two main files: one for the 4263ACPI tables consumed by the ACPICA core, and another for the miscellaneous 4264ACPI tables that are consumed by the drivers and other software. The various 4265FADT definitions were merged into one common section and three different 4266tables (ACPI 1.0, 1.0+, and 2.0) 4267 4268Example Code and Data Size: These are the sizes for the OS-independent 4269acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4270debug version of the code includes the debug output trace mechanism and has 4271a much larger code and data size. 4272 4273 Previous Release: 4274 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 4275 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 4276 Current Release: 4277 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 4278 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 4279 4280 42812) iASL Compiler/Disassembler and Tools: 4282 4283Disassembler: Implemented support to decode and format all non-AML ACPI 4284tables (tables other than DSDTs and SSDTs.) This includes the new tables 4285added to the ACPICA headers, therefore all current and known ACPI tables are 4286supported. 4287 4288Disassembler: The change to allow ACPI names with invalid characters also 4289enables the disassembly of such tables. Invalid characters within names are 4290changed to '*' to make the name printable; the iASL compiler will still 4291generate an error for such names, however, since this is an invalid ACPI 4292character. 4293 4294Implemented an option for AcpiXtract (-a) to extract all tables found in the 4295input file. The default invocation extracts only the DSDTs and SSDTs. 4296 4297Fixed a couple of gcc generation issues for iASL and AcpiExec and added a 4298makefile for the AcpiXtract utility. 4299 4300---------------------------------------- 430117 March 2006. Summary of changes for version 20060317: 4302 43031) ACPI CA Core Subsystem: 4304 4305Implemented the use of a cache object for all internal namespace nodes. 4306Since there are about 1000 static nodes in a typical system, this will 4307decrease memory use for cache implementations that minimize per-allocation 4308overhead (such as a slab allocator.) 4309 4310Removed the reference count mechanism for internal namespace nodes, since it 4311was deemed unnecessary. This reduces the size of each namespace node by 4312about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit case, 4313and 32 bytes for the 64-bit case. 4314 4315Optimized several internal data structures to reduce object size on 64-bit 4316platforms by packing data within the 64-bit alignment. This includes the 4317frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static 4318instances corresponding to the namespace objects. 4319 4320Added two new strings for the predefined _OSI method: "Windows 2001.1 SP1" 4321and "Windows 2006". 4322 4323Split the allocation tracking mechanism out to a separate file, from 4324utalloc.c to uttrack.c. This mechanism appears to be only useful for 4325application-level code. Kernels may wish to not include uttrack.c in 4326distributions. 4327 4328Removed all remnants of the obsolete ACPI_REPORT_* macros and the associated 4329code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING 4330macros.) 4331 4332Code and Data Size: These are the sizes for the acpica.lib produced by the 4333Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI 4334driver or OSPM code. The debug version of the code includes the debug output 4335trace mechanism and has a much larger code and data size. Note that these 4336values will vary depending on the efficiency of the compiler and the 4337compiler options used during generation. 4338 4339 Previous Release: 4340 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 4341 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 4342 Current Release: 4343 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 4344 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 4345 4346 43472) iASL Compiler/Disassembler and Tools: 4348 4349Implemented an ANSI C version of the acpixtract utility. This version will 4350automatically extract the DSDT and all SSDTs from the input acpidump text 4351file and dump the binary output to separate files. It can also display a 4352summary of the input file including the headers for each table found and 4353will extract any single ACPI table, with any signature. (See 4354source/tools/acpixtract) 4355 4356---------------------------------------- 435710 March 2006. Summary of changes for version 20060310: 4358 43591) ACPI CA Core Subsystem: 4360 4361Tagged all external interfaces to the subsystem with the new 4362ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to assist 4363kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL 4364macro. The default definition is NULL. 4365 4366Added the ACPI_THREAD_ID type for the return value from AcpiOsGetThreadId. 4367This allows the host to define this as necessary to simplify kernel 4368integration. The default definition is ACPI_NATIVE_UINT. 4369 4370Fixed two interpreter problems related to error processing, the deletion of 4371objects, and placing invalid pointers onto the internal operator result 4372stack. BZ 6028, 6151 (Valery Podrezov) 4373 4374Increased the reference count threshold where a warning is emitted for large 4375reference counts in order to eliminate unnecessary warnings on systems with 4376large namespaces (especially 64-bit.) Increased the value from 0x400 to 43770x800. 4378 4379Due to universal disagreement as to the meaning of the 'c' in the calloc() 4380function, the ACPI_MEM_CALLOCATE macro has been renamed to 4381ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'. 4382ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and 4383ACPI_FREE. 4384 4385Code and Data Size: These are the sizes for the acpica.lib produced by the 4386Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI 4387driver or OSPM code. The debug version of the code includes the debug output 4388trace mechanism and has a much larger code and data size. Note that these 4389values will vary depending on the efficiency of the compiler and the 4390compiler options used during generation. 4391 4392 Previous Release: 4393 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 4394 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 4395 Current Release: 4396 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 4397 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 4398 4399 44002) iASL Compiler/Disassembler: 4401 4402Disassembler: implemented support for symbolic resource descriptor 4403references. If a CreateXxxxField operator references a fixed offset within a 4404resource descriptor, a name is assigned to the descriptor and the offset is 4405translated to the appropriate resource tag and pathname. The addition of 4406this support brings the disassembled code very close to the original ASL 4407source code and helps eliminate run-time errors when the disassembled code 4408is modified (and recompiled) in such a way as to invalidate the original 4409fixed offsets. 4410 4411Implemented support for a Descriptor Name as the last parameter to the ASL 4412Register() macro. This parameter was inadvertently left out of the ACPI 4413specification, and will be added for ACPI 3.0b. 4414 4415Fixed a problem where the use of the "_OSI" string (versus the full path 4416"\_OSI") caused an internal compiler error. ("No back ptr to op") 4417 4418Fixed a problem with the error message that occurs when an invalid string is 4419used for a _HID object (such as one with an embedded asterisk: "*PNP010A".) 4420The correct message is now displayed. 4421 4422---------------------------------------- 442317 February 2006. Summary of changes for version 20060217: 4424 44251) ACPI CA Core Subsystem: 4426 4427Implemented a change to the IndexField support to match the behavior of the 4428Microsoft AML interpreter. The value written to the Index register is now a 4429byte offset, no longer an index based upon the width of the Data register. 4430This should fix IndexField problems seen on some machines where the Data 4431register is not exactly one byte wide. The ACPI specification will be 4432clarified on this point. 4433 4434Fixed a problem where several resource descriptor types could overrun the 4435internal descriptor buffer due to size miscalculation: VendorShort, 4436VendorLong, and Interrupt. This was noticed on IA64 machines, but could 4437affect all platforms. 4438 4439Fixed a problem where individual resource descriptors were misaligned within 4440the internal buffer, causing alignment faults on IA64 platforms. 4441 4442Code and Data Size: These are the sizes for the acpica.lib produced by the 4443Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI 4444driver or OSPM code. The debug version of the code includes the debug output 4445trace mechanism and has a much larger code and data size. Note that these 4446values will vary depending on the efficiency of the compiler and the 4447compiler options used during generation. 4448 4449 Previous Release: 4450 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 4451 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 4452 Current Release: 4453 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 4454 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 4455 4456 44572) iASL Compiler/Disassembler: 4458 4459Implemented support for new reserved names: _WDG and _WED are Microsoft 4460extensions for Windows Instrumentation Management, _TDL is a new ACPI- 4461defined method (Throttling Depth Limit.) 4462 4463Fixed a problem where a zero-length VendorShort or VendorLong resource 4464descriptor was incorrectly emitted as a descriptor of length one. 4465 4466---------------------------------------- 446710 February 2006. Summary of changes for version 20060210: 4468 44691) ACPI CA Core Subsystem: 4470 4471Removed a couple of extraneous ACPI_ERROR messages that appeared during 4472normal execution. These became apparent after the conversion from 4473ACPI_DEBUG_PRINT. 4474 4475Fixed a problem where the CreateField operator could hang if the BitIndex or 4476NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359) 4477 4478Fixed a problem where a DeRefOf operation on a buffer object incorrectly 4479failed with an exception. This also fixes a couple of related RefOf and 4480DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387) 4481 4482Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead of 4483AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov, BZ 44845480) 4485 4486Implemented a memory cleanup at the end of the execution of each iteration 4487of an AML While() loop, preventing the accumulation of outstanding objects. 4488(Valery Podrezov, BZ 5427) 4489 4490Eliminated a chunk of duplicate code in the object resolution code. (Valery 4491Podrezov, BZ 5336) 4492 4493Fixed several warnings during the 64-bit code generation. 4494 4495The AcpiSrc source code conversion tool now inserts one line of whitespace 4496after an if() statement that is followed immediately by a comment, improving 4497readability of the Linux code. 4498 4499Code and Data Size: The current and previous library sizes for the core 4500subsystem are shown below. These are the code and data sizes for the 4501acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4502values do not include any ACPI driver or OSPM code. The debug version of the 4503code includes the debug output trace mechanism and has a much larger code 4504and data size. Note that these values will vary depending on the efficiency 4505of the compiler and the compiler options used during generation. 4506 4507 Previous Release: 4508 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 4509 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 4510 Current Release: 4511 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 4512 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 4513 4514 45152) iASL Compiler/Disassembler: 4516 4517Fixed a problem with the disassembly of a BankField operator with a complex 4518expression for the BankValue parameter. 4519 4520---------------------------------------- 452127 January 2006. Summary of changes for version 20060127: 4522 45231) ACPI CA Core Subsystem: 4524 4525Implemented support in the Resource Manager to allow unresolved namestring 4526references within resource package objects for the _PRT method. This support 4527is in addition to the previously implemented unresolved reference support 4528within the AML parser. If the interpreter slack mode is enabled, these 4529unresolved references will be passed through to the caller as a NULL package 4530entry. 4531 4532Implemented and deployed new macros and functions for error and warning 4533messages across the subsystem. These macros are simpler and generate less 4534code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION, 4535ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older 4536macros remain defined to allow ACPI drivers time to migrate to the new 4537macros. 4538 4539Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of the 4540Acquire/Release Lock OSL interfaces. 4541 4542Fixed a problem where Alias ASL operators are sometimes not correctly 4543resolved, in both the interpreter and the iASL compiler. 4544 4545Fixed several problems with the implementation of the ConcatenateResTemplate 4546ASL operator. As per the ACPI specification, zero length buffers are now 4547treated as a single EndTag. One-length buffers always cause a fatal 4548exception. Non-zero length buffers that do not end with a full 2-byte EndTag 4549cause a fatal exception. 4550 4551Fixed a possible structure overwrite in the AcpiGetObjectInfo external 4552interface. (With assistance from Thomas Renninger) 4553 4554Code and Data Size: The current and previous library sizes for the core 4555subsystem are shown below. These are the code and data sizes for the 4556acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4557values do not include any ACPI driver or OSPM code. The debug version of the 4558code includes the debug output trace mechanism and has a much larger code 4559and data size. Note that these values will vary depending on the efficiency 4560of the compiler and the compiler options used during generation. 4561 4562 Previous Release: 4563 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 4564 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 4565 Current Release: 4566 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 4567 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 4568 4569 45702) iASL Compiler/Disassembler: 4571 4572Fixed an internal error that was generated for any forward references to ASL 4573Alias objects. 4574 4575---------------------------------------- 457613 January 2006. Summary of changes for version 20060113: 4577 45781) ACPI CA Core Subsystem: 4579 4580Added 2006 copyright to all module headers and signons. This affects 4581virtually every file in the ACPICA core subsystem, iASL compiler, and the 4582utilities. 4583 4584Enhanced the ACPICA error reporting in order to simplify user migration to 4585the non-debug version of ACPICA. Replaced all instances of the 4586ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN debug 4587levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros, 4588respectively. This preserves all error and warning messages in the non-debug 4589version of the ACPICA code (this has been referred to as the "debug lite" 4590option.) Over 200 cases were converted to create a total of over 380 4591error/warning messages across the ACPICA code. This increases the code and 4592data size of the default non-debug version of the code somewhat (about 13K), 4593but all error/warning reporting may be disabled if desired (and code 4594eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time 4595configuration option. The size of the debug version of ACPICA remains about 4596the same. 4597 4598Fixed a memory leak within the AML Debugger "Set" command. One object was 4599not properly deleted for every successful invocation of the command. 4600 4601Code and Data Size: The current and previous library sizes for the core 4602subsystem are shown below. These are the code and data sizes for the 4603acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4604values do not include any ACPI driver or OSPM code. The debug version of the 4605code includes the debug output trace mechanism and has a much larger code 4606and data size. Note that these values will vary depending on the efficiency 4607of the compiler and the compiler options used during generation. 4608 4609 Previous Release: 4610 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 4611 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 4612 Current Release: 4613 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 4614 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 4615 4616 46172) iASL Compiler/Disassembler: 4618 4619The compiler now officially supports the ACPI 3.0a specification that was 4620released on December 30, 2005. (Specification is available at www.acpi.info) 4621 4622---------------------------------------- 462316 December 2005. Summary of changes for version 20051216: 4624 46251) ACPI CA Core Subsystem: 4626 4627Implemented optional support to allow unresolved names within ASL Package 4628objects. A null object is inserted in the package when a named reference 4629cannot be located in the current namespace. Enabled via the interpreter 4630slack flag, this should eliminate AE_NOT_FOUND exceptions seen on machines 4631that contain such code. 4632 4633Implemented an optimization to the initialization sequence that can improve 4634boot time. During ACPI device initialization, the _STA method is now run if 4635and only if the _INI method exists. The _STA method is used to determine if 4636the device is present; An _INI can only be run if _STA returns present, but 4637it is a waste of time to run the _STA method if the _INI does not exist. 4638(Prototype and assistance from Dong Wei) 4639 4640Implemented use of the C99 uintptr_t for the pointer casting macros if it is 4641available in the current compiler. Otherwise, the default (void *) cast is 4642used as before. 4643 4644Fixed some possible memory leaks found within the execution path of the 4645Break, Continue, If, and CreateField operators. (Valery Podrezov) 4646 4647Fixed a problem introduced in the 20051202 release where an exception is 4648generated during method execution if a control method attempts to declare 4649another method. 4650 4651Moved resource descriptor string constants that are used by both the AML 4652disassembler and AML debugger to the common utilities directory so that 4653these components are independent. 4654 4655Implemented support in the AcpiExec utility (-e switch) to globally ignore 4656exceptions during control method execution (method is not aborted.) 4657 4658Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix 4659generation. 4660 4661Code and Data Size: The current and previous library sizes for the core 4662subsystem are shown below. These are the code and data sizes for the 4663acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4664values do not include any ACPI driver or OSPM code. The debug version of the 4665code includes the debug output trace mechanism and has a much larger code 4666and data size. Note that these values will vary depending on the efficiency 4667of the compiler and the compiler options used during generation. 4668 4669 Previous Release: 4670 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 4671 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 4672 Current Release: 4673 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 4674 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 4675 4676 46772) iASL Compiler/Disassembler: 4678 4679Fixed a problem where a CPU stack overflow fault could occur if a recursive 4680method call was made from within a Return statement. 4681 4682---------------------------------------- 468302 December 2005. Summary of changes for version 20051202: 4684 46851) ACPI CA Core Subsystem: 4686 4687Modified the parsing of control methods to no longer create namespace 4688objects during the first pass of the parse. Objects are now created only 4689during the execute phase, at the moment the namespace creation operator is 4690encountered in the AML (Name, OperationRegion, CreateByteField, etc.) This 4691should eliminate ALREADY_EXISTS exceptions seen on some machines where 4692reentrant control methods are protected by an AML mutex. The mutex will now 4693correctly block multiple threads from attempting to create the same object 4694more than once. 4695 4696Increased the number of available Owner Ids for namespace object tracking 4697from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen on 4698some machines with a large number of ACPI tables (either static or dynamic). 4699 4700Fixed a problem with the AcpiExec utility where a fault could occur when the 4701-b switch (batch mode) is used. 4702 4703Enhanced the namespace dump routine to output the owner ID for each 4704namespace object. 4705 4706Code and Data Size: The current and previous library sizes for the core 4707subsystem are shown below. These are the code and data sizes for the 4708acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4709values do not include any ACPI driver or OSPM code. The debug version of the 4710code includes the debug output trace mechanism and has a much larger code 4711and data size. Note that these values will vary depending on the efficiency 4712of the compiler and the compiler options used during generation. 4713 4714 Previous Release: 4715 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 4716 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 4717 Current Release: 4718 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 4719 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 4720 4721 47222) iASL Compiler/Disassembler: 4723 4724Fixed a parse error during compilation of certain Switch/Case constructs. To 4725simplify the parse, the grammar now allows for multiple Default statements 4726and this error is now detected and flagged during the analysis phase. 4727 4728Disassembler: The disassembly now includes the contents of the original 4729table header within a comment at the start of the file. This includes the 4730name and version of the original ASL compiler. 4731 4732---------------------------------------- 473317 November 2005. Summary of changes for version 20051117: 4734 47351) ACPI CA Core Subsystem: 4736 4737Fixed a problem in the AML parser where the method thread count could be 4738decremented below zero if any errors occurred during the method parse phase. 4739This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some machines. 4740This also fixed a related regression with the mechanism that detects and 4741corrects methods that cannot properly handle reentrancy (related to the 4742deployment of the new OwnerId mechanism.) 4743 4744Eliminated the pre-parsing of control methods (to detect errors) during 4745table load. Related to the problem above, this was causing unwind issues if 4746any errors occurred during the parse, and it seemed to be overkill. A table 4747load should not be aborted if there are problems with any single control 4748method, thus rendering this feature rather pointless. 4749 4750Fixed a problem with the new table-driven resource manager where an internal 4751buffer overflow could occur for small resource templates. 4752 4753Implemented a new external interface, AcpiGetVendorResource. This interface 4754will find and return a vendor-defined resource descriptor within a _CRS or 4755_PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn Helgaas. 4756 4757Removed the length limit (200) on string objects as per the upcoming ACPI 47583.0A specification. This affects the following areas of the interpreter: 1) 4759any implicit conversion of a Buffer to a String, 2) a String object result 4760of the ASL Concatentate operator, 3) the String object result of the ASL 4761ToString operator. 4762 4763Fixed a problem in the Windows OS interface layer (OSL) where a WAIT_FOREVER 4764on a semaphore object would incorrectly timeout. This allows the 4765multithreading features of the AcpiExec utility to work properly under 4766Windows. 4767 4768Updated the Linux makefiles for the iASL compiler and AcpiExec to include 4769the recently added file named "utresrc.c". 4770 4771Code and Data Size: The current and previous library sizes for the core 4772subsystem are shown below. These are the code and data sizes for the 4773acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4774values do not include any ACPI driver or OSPM code. The debug version of the 4775code includes the debug output trace mechanism and has a much larger code 4776and data size. Note that these values will vary depending on the efficiency 4777of the compiler and the compiler options used during generation. 4778 4779 Previous Release: 4780 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 4781 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 4782 Current Release: 4783 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 4784 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 4785 4786 47872) iASL Compiler/Disassembler: 4788 4789Removed the limit (200) on string objects as per the upcoming ACPI 3.0A 4790specification. For the iASL compiler, this means that string literals within 4791the source ASL can be of any length. 4792 4793Enhanced the listing output to dump the AML code for resource descriptors 4794immediately after the ASL code for each descriptor, instead of in a block at 4795the end of the entire resource template. 4796 4797Enhanced the compiler debug output to dump the entire original parse tree 4798constructed during the parse phase, before any transforms are applied to the 4799tree. The transformed tree is dumped also. 4800 4801---------------------------------------- 480202 November 2005. Summary of changes for version 20051102: 4803 48041) ACPI CA Core Subsystem: 4805 4806Modified the subsystem initialization sequence to improve GPE support. The 4807GPE initialization has been split into two parts in order to defer execution 4808of the _PRW methods (Power Resources for Wake) until after the hardware is 4809fully initialized and the SCI handler is installed. This allows the _PRW 4810methods to access fields protected by the Global Lock. This will fix systems 4811where a NO_GLOBAL_LOCK exception has been seen during initialization. 4812 4813Converted the ACPI internal object disassemble and display code within the 4814AML debugger to fully table-driven operation, reducing code size and 4815increasing maintainability. 4816 4817Fixed a regression with the ConcatenateResTemplate() ASL operator introduced 4818in the 20051021 release. 4819 4820Implemented support for "local" internal ACPI object types within the 4821debugger "Object" command and the AcpiWalkNamespace external interfaces. 4822These local types include RegionFields, BankFields, IndexFields, Alias, and 4823reference objects. 4824 4825Moved common AML resource handling code into a new file, "utresrc.c". This 4826code is shared by both the Resource Manager and the AML Debugger. 4827 4828Code and Data Size: The current and previous library sizes for the core 4829subsystem are shown below. These are the code and data sizes for the 4830acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4831values do not include any ACPI driver or OSPM code. The debug version of the 4832code includes the debug output trace mechanism and has a much larger code 4833and data size. Note that these values will vary depending on the efficiency 4834of the compiler and the compiler options used during generation. 4835 4836 Previous Release: 4837 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 4838 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 4839 Current Release: 4840 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 4841 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 4842 4843 48442) iASL Compiler/Disassembler: 4845 4846Fixed a problem with very large initializer lists (more than 4000 elements) 4847for both Buffer and Package objects where the parse stack could overflow. 4848 4849Enhanced the pre-compile source code scan for non-ASCII characters to ignore 4850characters within comment fields. The scan is now always performed and is no 4851longer optional, detecting invalid characters within a source file 4852immediately rather than during the parse phase or later. 4853 4854Enhanced the ASL grammar definition to force early reductions on all list- 4855style grammar elements so that the overall parse stack usage is greatly 4856reduced. This should improve performance and reduce the possibility of parse 4857stack overflow. 4858 4859Eliminated all reduce/reduce conflicts in the iASL parser generation. Also, 4860with the addition of a %expected statement, the compiler generates from 4861source with no warnings. 4862 4863Fixed a possible segment fault in the disassembler if the input filename 4864does not contain a "dot" extension (Thomas Renninger). 4865 4866---------------------------------------- 486721 October 2005. Summary of changes for version 20051021: 4868 48691) ACPI CA Core Subsystem: 4870 4871Implemented support for the EM64T and other x86-64 processors. This 4872essentially entails recognizing that these processors support non-aligned 4873memory transfers. Previously, all 64-bit processors were assumed to lack 4874hardware support for non-aligned transfers. 4875 4876Completed conversion of the Resource Manager to nearly full table-driven 4877operation. Specifically, the resource conversion code (convert AML to 4878internal format and the reverse) and the debug code to dump internal 4879resource descriptors are fully table-driven, reducing code and data size and 4880improving maintainability. 4881 4882The OSL interfaces for Acquire and Release Lock now use a 64-bit flag word 4883on 64-bit processors instead of a fixed 32-bit word. (With assistance from 4884Alexey Starikovskiy) 4885 4886Implemented support within the resource conversion code for the Type- 4887Specific byte within the various ACPI 3.0 *WordSpace macros. 4888 4889Fixed some issues within the resource conversion code for the type-specific 4890flags for both Memory and I/O address resource descriptors. For Memory, 4891implemented support for the MTP and TTP flags. For I/O, split the TRS and 4892TTP flags into two separate fields. 4893 4894Code and Data Size: The current and previous library sizes for the core 4895subsystem are shown below. These are the code and data sizes for the 4896acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4897values do not include any ACPI driver or OSPM code. The debug version of the 4898code includes the debug output trace mechanism and has a much larger code 4899and data size. Note that these values will vary depending on the efficiency 4900of the compiler and the compiler options used during generation. 4901 4902 Previous Release: 4903 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 4904 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 4905 Current Release: 4906 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 4907 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 4908 4909 4910 49112) iASL Compiler/Disassembler: 4912 4913Relaxed a compiler restriction that disallowed a ResourceIndex byte if the 4914corresponding ResourceSource string was not also present in a resource 4915descriptor declaration. This restriction caused problems with existing 4916AML/ASL code that includes the Index byte without the string. When such AML 4917was disassembled, it could not be compiled without modification. Further, 4918the modified code created a resource template with a different size than the 4919original, breaking code that used fixed offsets into the resource template 4920buffer. 4921 4922Removed a recent feature of the disassembler to ignore a lone ResourceIndex 4923byte. This byte is now emitted if present so that the exact AML can be 4924reproduced when the disassembled code is recompiled. 4925 4926Improved comments and text alignment for the resource descriptor code 4927emitted by the disassembler. 4928 4929Implemented disassembler support for the ACPI 3.0 AccessSize field within a 4930Register() resource descriptor. 4931 4932---------------------------------------- 493330 September 2005. Summary of changes for version 20050930: 4934 49351) ACPI CA Core Subsystem: 4936 4937Completed a major overhaul of the Resource Manager code - specifically, 4938optimizations in the area of the AML/internal resource conversion code. The 4939code has been optimized to simplify and eliminate duplicated code, CPU stack 4940use has been decreased by optimizing function parameters and local 4941variables, and naming conventions across the manager have been standardized 4942for clarity and ease of maintenance (this includes function, parameter, 4943variable, and struct/typedef names.) The update may force changes in some 4944driver code, depending on how resources are handled by the host OS. 4945 4946All Resource Manager dispatch and information tables have been moved to a 4947single location for clarity and ease of maintenance. One new file was 4948created, named "rsinfo.c". 4949 4950The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to 4951guarantee that the argument is not evaluated twice, making them less prone 4952to macro side-effects. However, since there exists the possibility of 4953additional stack use if a particular compiler cannot optimize them (such as 4954in the debug generation case), the original macros are optionally available. 4955Note that some invocations of the return_VALUE macro may now cause size 4956mismatch warnings; the return_UINT8 and return_UINT32 macros are provided to 4957eliminate these. (From Randy Dunlap) 4958 4959Implemented a new mechanism to enable debug tracing for individual control 4960methods. A new external interface, AcpiDebugTrace, is provided to enable 4961this mechanism. The intent is to allow the host OS to easily enable and 4962disable tracing for problematic control methods. This interface can be 4963easily exposed to a user or debugger interface if desired. See the file 4964psxface.c for details. 4965 4966AcpiUtCallocate will now return a valid pointer if a length of zero is 4967specified - a length of one is used and a warning is issued. This matches 4968the behavior of AcpiUtAllocate. 4969 4970Code and Data Size: The current and previous library sizes for the core 4971subsystem are shown below. These are the code and data sizes for the 4972acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4973values do not include any ACPI driver or OSPM code. The debug version of the 4974code includes the debug output trace mechanism and has a much larger code 4975and data size. Note that these values will vary depending on the efficiency 4976of the compiler and the compiler options used during generation. 4977 4978 Previous Release: 4979 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 4980 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 4981 Current Release: 4982 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 4983 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 4984 4985 49862) iASL Compiler/Disassembler: 4987 4988A remark is issued if the effective compile-time length of a package or 4989buffer is zero. Previously, this was a warning. 4990 4991---------------------------------------- 499216 September 2005. Summary of changes for version 20050916: 4993 49941) ACPI CA Core Subsystem: 4995 4996Fixed a problem within the Resource Manager where support for the Generic 4997Register descriptor was not fully implemented. This descriptor is now fully 4998recognized, parsed, disassembled, and displayed. 4999 5000Completely restructured the Resource Manager code to utilize table-driven 5001dispatch and lookup, eliminating many of the large switch() statements. This 5002reduces overall subsystem code size and code complexity. Affects the 5003resource parsing and construction, disassembly, and debug dump output. 5004 5005Cleaned up and restructured the debug dump output for all resource 5006descriptors. Improved readability of the output and reduced code size. 5007 5008Fixed a problem where changes to internal data structures caused the 5009optional ACPI_MUTEX_DEBUG code to fail compilation if specified. 5010 5011Code and Data Size: The current and previous library sizes for the core 5012subsystem are shown below. These are the code and data sizes for the 5013acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 5014values do not include any ACPI driver or OSPM code. The debug version of the 5015code includes the debug output trace mechanism and has a much larger code 5016and data size. Note that these values will vary depending on the efficiency 5017of the compiler and the compiler options used during generation. 5018 5019 Previous Release: 5020 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 5021 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 5022 Current Release: 5023 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 5024 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 5025 5026 50272) iASL Compiler/Disassembler: 5028 5029Updated the disassembler to automatically insert an EndDependentFn() macro 5030into the ASL stream if this macro is missing in the original AML code, 5031simplifying compilation of the resulting ASL module. 5032 5033Fixed a problem in the disassembler where a disassembled ResourceSource 5034string (within a large resource descriptor) was not surrounded by quotes and 5035not followed by a comma, causing errors when the resulting ASL module was 5036compiled. Also, escape sequences within a ResourceSource string are now 5037handled correctly (especially "\\") 5038 5039---------------------------------------- 504002 September 2005. Summary of changes for version 20050902: 5041 50421) ACPI CA Core Subsystem: 5043 5044Fixed a problem with the internal Owner ID allocation and deallocation 5045mechanisms for control method execution and recursive method invocation. 5046This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId" 5047messages seen on some systems. Recursive method invocation depth is 5048currently limited to 255. (Alexey Starikovskiy) 5049 5050Completely eliminated all vestiges of support for the "module-level 5051executable code" until this support is fully implemented and debugged. This 5052should eliminate the NO_RETURN_VALUE exceptions seen during table load on 5053some systems that invoke this support. 5054 5055Fixed a problem within the resource manager code where the transaction flags 5056for a 64-bit address descriptor were handled incorrectly in the type- 5057specific flag byte. 5058 5059Consolidated duplicate code within the address descriptor resource manager 5060code, reducing overall subsystem code size. 5061 5062Fixed a fault when using the AML debugger "disassemble" command to 5063disassemble individual control methods. 5064 5065Removed references to the "release_current" directory within the Unix 5066release package. 5067 5068Code and Data Size: The current and previous core subsystem library sizes 5069are shown below. These are the code and data sizes for the acpica.lib 5070produced by the Microsoft Visual C++ 6.0 compiler. These values do not 5071include any ACPI driver or OSPM code. The debug version of the code includes 5072the debug output trace mechanism and has a much larger code and data size. 5073Note that these values will vary depending on the efficiency of the compiler 5074and the compiler options used during generation. 5075 5076 Previous Release: 5077 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 5078 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 5079 Current Release: 5080 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 5081 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 5082 5083 50842) iASL Compiler/Disassembler: 5085 5086Implemented an error check for illegal duplicate values in the interrupt and 5087dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and 5088Interrupt(). 5089 5090Implemented error checking for the Irq() and IrqNoFlags() macros to detect 5091too many values in the interrupt list (16 max) and invalid values in the 5092list (range 0 - 15) 5093 5094The maximum length string literal within an ASL file is now restricted to 5095200 characters as per the ACPI specification. 5096 5097Fixed a fault when using the -ln option (generate namespace listing). 5098 5099Implemented an error check to determine if a DescriptorName within a 5100resource descriptor has already been used within the current scope. 5101 5102---------------------------------------- 510315 August 2005. Summary of changes for version 20050815: 5104 51051) ACPI CA Core Subsystem: 5106 5107Implemented a full bytewise compare to determine if a table load request is 5108attempting to load a duplicate table. The compare is performed if the table 5109signatures and table lengths match. This will allow different tables with 5110the same OEM Table ID and revision to be loaded - probably against the ACPI 5111specification, but discovered in the field nonetheless. 5112 5113Added the changes.txt logfile to each of the zipped release packages. 5114 5115Code and Data Size: Current and previous core subsystem library sizes are 5116shown below. These are the code and data sizes for the acpica.lib produced 5117by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5118any ACPI driver or OSPM code. The debug version of the code includes the 5119debug output trace mechanism and has a much larger code and data size. Note 5120that these values will vary depending on the efficiency of the compiler and 5121the compiler options used during generation. 5122 5123 Previous Release: 5124 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 5125 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 5126 Current Release: 5127 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 5128 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 5129 5130 51312) iASL Compiler/Disassembler: 5132 5133Fixed a problem where incorrect AML code could be generated for Package 5134objects if optimization is disabled (via the -oa switch). 5135 5136Fixed a problem with where incorrect AML code is generated for variable- 5137length packages when the package length is not specified and the number of 5138initializer values is greater than 255. 5139 5140 5141---------------------------------------- 514229 July 2005. Summary of changes for version 20050729: 5143 51441) ACPI CA Core Subsystem: 5145 5146Implemented support to ignore an attempt to install/load a particular ACPI 5147table more than once. Apparently there exists BIOS code that repeatedly 5148attempts to load the same SSDT upon certain events. With assistance from 5149Venkatesh Pallipadi. 5150 5151Restructured the main interface to the AML parser in order to correctly 5152handle all exceptional conditions. This will prevent leakage of the OwnerId 5153resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on some 5154machines. With assistance from Alexey Starikovskiy. 5155 5156Support for "module level code" has been disabled in this version due to a 5157number of issues that have appeared on various machines. The support can be 5158enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem 5159compilation. When the issues are fully resolved, the code will be enabled by 5160default again. 5161 5162Modified the internal functions for debug print support to define the 5163FunctionName parameter as a (const char *) for compatibility with compiler 5164built-in macros such as __FUNCTION__, etc. 5165 5166Linted the entire ACPICA source tree for both 32-bit and 64-bit. 5167 5168Implemented support to display an object count summary for the AML Debugger 5169commands Object and Methods. 5170 5171Code and Data Size: Current and previous core subsystem library sizes are 5172shown below. These are the code and data sizes for the acpica.lib produced 5173by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5174any ACPI driver or OSPM code. The debug version of the code includes the 5175debug output trace mechanism and has a much larger code and data size. Note 5176that these values will vary depending on the efficiency of the compiler and 5177the compiler options used during generation. 5178 5179 Previous Release: 5180 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 5181 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 5182 Current Release: 5183 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 5184 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 5185 5186 51872) iASL Compiler/Disassembler: 5188 5189Fixed a regression that appeared in the 20050708 version of the compiler 5190where an error message was inadvertently emitted for invocations of the _OSI 5191reserved control method. 5192 5193---------------------------------------- 519408 July 2005. Summary of changes for version 20050708: 5195 51961) ACPI CA Core Subsystem: 5197 5198The use of the CPU stack in the debug version of the subsystem has been 5199considerably reduced. Previously, a debug structure was declared in every 5200function that used the debug macros. This structure has been removed in 5201favor of declaring the individual elements as parameters to the debug 5202functions. This reduces the cumulative stack use during nested execution of 5203ACPI function calls at the cost of a small increase in the code size of the 5204debug version of the subsystem. With assistance from Alexey Starikovskiy and 5205Len Brown. 5206 5207Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent 5208headers to define a macro that will return the current function name at 5209runtime (such as __FUNCTION__ or _func_, etc.) The function name is used by 5210the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the 5211compiler-dependent header, the function name is saved on the CPU stack (one 5212pointer per function.) This mechanism is used because apparently there 5213exists no standard ANSI-C defined macro that that returns the function name. 5214 5215Redesigned and reimplemented the "Owner ID" mechanism used to track 5216namespace objects created/deleted by ACPI tables and control method 5217execution. A bitmap is now used to allocate and free the IDs, thus solving 5218the wraparound problem present in the previous implementation. The size of 5219the namespace node descriptor was reduced by 2 bytes as a result (Alexey 5220Starikovskiy). 5221 5222Removed the UINT32_BIT and UINT16_BIT types that were used for the bitfield 5223flag definitions within the headers for the predefined ACPI tables. These 5224have been replaced by UINT8_BIT in order to increase the code portability of 5225the subsystem. If the use of UINT8 remains a problem, we may be forced to 5226eliminate bitfields entirely because of a lack of portability. 5227 5228Enhanced the performance of the AcpiUtUpdateObjectReference procedure. This 5229is a frequently used function and this improvement increases the performance 5230of the entire subsystem (Alexey Starikovskiy). 5231 5232Fixed several possible memory leaks and the inverse - premature object 5233deletion (Alexey Starikovskiy). 5234 5235Code and Data Size: Current and previous core subsystem library sizes are 5236shown below. These are the code and data sizes for the acpica.lib produced 5237by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5238any ACPI driver or OSPM code. The debug version of the code includes the 5239debug output trace mechanism and has a much larger code and data size. Note 5240that these values will vary depending on the efficiency of the compiler and 5241the compiler options used during generation. 5242 5243 Previous Release: 5244 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 5245 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 5246 Current Release: 5247 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 5248 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 5249 5250---------------------------------------- 525124 June 2005. Summary of changes for version 20050624: 5252 52531) ACPI CA Core Subsystem: 5254 5255Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for 5256the host-defined cache object. This allows the OSL implementation to define 5257and type this object in any manner desired, simplifying the OSL 5258implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for 5259Linux, and should be defined in the OS-specific header file for other 5260operating systems as required. 5261 5262Changed the interface to AcpiOsAcquireObject to directly return the 5263requested object as the function return (instead of ACPI_STATUS.) This 5264change was made for performance reasons, since this is the purpose of the 5265interface in the first place. AcpiOsAcquireObject is now similar to the 5266AcpiOsAllocate interface. 5267 5268Implemented a new AML debugger command named Businfo. This command displays 5269information about all devices that have an associate _PRT object. The _ADR, 5270_HID, _UID, and _CID are displayed for these devices. 5271 5272Modified the initialization sequence in AcpiInitializeSubsystem to call the 5273OSL interface AcpiOslInitialize first, before any local initialization. This 5274change was required because the global initialization now calls OSL 5275interfaces. 5276 5277Enhanced the Dump command to display the entire contents of Package objects 5278(including all sub-objects and their values.) 5279 5280Restructured the code base to split some files because of size and/or 5281because the code logically belonged in a separate file. New files are listed 5282below. All makefiles and project files included in the ACPI CA release have 5283been updated. 5284 utilities/utcache.c /* Local cache interfaces */ 5285 utilities/utmutex.c /* Local mutex support */ 5286 utilities/utstate.c /* State object support */ 5287 interpreter/parser/psloop.c /* Main AML parse loop */ 5288 5289Code and Data Size: Current and previous core subsystem library sizes are 5290shown below. These are the code and data sizes for the acpica.lib produced 5291by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5292any ACPI driver or OSPM code. The debug version of the code includes the 5293debug output trace mechanism and has a much larger code and data size. Note 5294that these values will vary depending on the efficiency of the compiler and 5295the compiler options used during generation. 5296 5297 Previous Release: 5298 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 5299 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 5300 Current Release: 5301 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 5302 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 5303 5304 53052) iASL Compiler/Disassembler: 5306 5307Fixed a regression introduced in version 20050513 where the use of a Package 5308object within a Case() statement caused a compile time exception. The 5309original behavior has been restored (a Match() operator is emitted.) 5310 5311---------------------------------------- 531217 June 2005. Summary of changes for version 20050617: 5313 53141) ACPI CA Core Subsystem: 5315 5316Moved the object cache operations into the OS interface layer (OSL) to allow 5317the host OS to handle these operations if desired (for example, the Linux 5318OSL will invoke the slab allocator). This support is optional; the compile 5319time define ACPI_USE_LOCAL_CACHE may be used to utilize the original cache 5320code in the ACPI CA core. The new OSL interfaces are shown below. See 5321utalloc.c for an example implementation, and acpiosxf.h for the exact 5322interface definitions. With assistance from Alexey Starikovskiy. 5323 AcpiOsCreateCache 5324 AcpiOsDeleteCache 5325 AcpiOsPurgeCache 5326 AcpiOsAcquireObject 5327 AcpiOsReleaseObject 5328 5329Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to return 5330and restore a flags parameter. This fits better with many OS lock models. 5331Note: the current execution state (interrupt handler or not) is no longer 5332passed to these interfaces. If necessary, the OSL must determine this state 5333by itself, a simple and fast operation. With assistance from Alexey 5334Starikovskiy. 5335 5336Fixed a problem in the ACPI table handling where a valid XSDT was assumed 5337present if the revision of the RSDP was 2 or greater. According to the ACPI 5338specification, the XSDT is optional in all cases, and the table manager 5339therefore now checks for both an RSDP >=2 and a valid XSDT pointer. 5340Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs contain 5341only the RSDT. 5342 5343Fixed an interpreter problem with the Mid() operator in the case of an input 5344string where the resulting output string is of zero length. It now correctly 5345returns a valid, null terminated string object instead of a string object 5346with a null pointer. 5347 5348Fixed a problem with the control method argument handling to allow a store 5349to an Arg object that already contains an object of type Device. The Device 5350object is now correctly overwritten. Previously, an error was returned. 5351 5352 5353Enhanced the debugger Find command to emit object values in addition to the 5354found object pathnames. The output format is the same as the dump namespace 5355command. 5356 5357Enhanced the debugger Set command. It now has the ability to set the value 5358of any Named integer object in the namespace (Previously, only method locals 5359and args could be set.) 5360 5361Code and Data Size: Current and previous core subsystem library sizes are 5362shown below. These are the code and data sizes for the acpica.lib produced 5363by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5364any ACPI driver or OSPM code. The debug version of the code includes the 5365debug output trace mechanism and has a much larger code and data size. Note 5366that these values will vary depending on the efficiency of the compiler and 5367the compiler options used during generation. 5368 5369 Previous Release: 5370 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 5371 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 5372 Current Release: 5373 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 5374 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 5375 5376 53772) iASL Compiler/Disassembler: 5378 5379Fixed a regression in the disassembler where if/else/while constructs were 5380output incorrectly. This problem was introduced in the previous release 5381(20050526). This problem also affected the single-step disassembly in the 5382debugger. 5383 5384Fixed a problem where compiling the reserved _OSI method would randomly (but 5385rarely) produce compile errors. 5386 5387Enhanced the disassembler to emit compilable code in the face of incorrect 5388AML resource descriptors. If the optional ResourceSourceIndex is present, 5389but the ResourceSource is not, do not emit the ResourceSourceIndex in the 5390disassembly. Otherwise, the resulting code cannot be compiled without 5391errors. 5392 5393---------------------------------------- 539426 May 2005. Summary of changes for version 20050526: 5395 53961) ACPI CA Core Subsystem: 5397 5398Implemented support to execute Type 1 and Type 2 AML opcodes appearing at 5399the module level (not within a control method.) These opcodes are executed 5400exactly once at the time the table is loaded. This type of code was legal up 5401until the release of ACPI 2.0B (2002) and is now supported within ACPI CA in 5402order to provide backwards compatibility with earlier BIOS implementations. 5403This eliminates the "Encountered executable code at module level" warning 5404that was previously generated upon detection of such code. 5405 5406Fixed a problem in the interpreter where an AE_NOT_FOUND exception could 5407inadvertently be generated during the lookup of namespace objects in the 5408second pass parse of ACPI tables and control methods. It appears that this 5409problem could occur during the resolution of forward references to namespace 5410objects. 5411 5412Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function, 5413corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This 5414allows the deadlock detection debug code to be compiled out in the normal 5415case, improving mutex performance (and overall subsystem performance) 5416considerably. 5417 5418Implemented a handful of miscellaneous fixes for possible memory leaks on 5419error conditions and error handling control paths. These fixes were 5420suggested by FreeBSD and the Coverity Prevent source code analysis tool. 5421 5422Added a check for a null RSDT pointer in AcpiGetFirmwareTable (tbxfroot.c) 5423to prevent a fault in this error case. 5424 5425Code and Data Size: Current and previous core subsystem library sizes are 5426shown below. These are the code and data sizes for the acpica.lib produced 5427by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5428any ACPI driver or OSPM code. The debug version of the code includes the 5429debug output trace mechanism and has a much larger code and data size. Note 5430that these values will vary depending on the efficiency of the compiler and 5431the compiler options used during generation. 5432 5433 Previous Release: 5434 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 5435 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 5436 Current Release: 5437 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 5438 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 5439 5440 54412) iASL Compiler/Disassembler: 5442 5443Implemented support to allow Type 1 and Type 2 ASL operators to appear at 5444the module level (not within a control method.) These operators will be 5445executed once at the time the table is loaded. This type of code was legal 5446up until the release of ACPI 2.0B (2002) and is now supported by the iASL 5447compiler in order to provide backwards compatibility with earlier BIOS ASL 5448code. 5449 5450The ACPI integer width (specified via the table revision ID or the -r 5451override, 32 or 64 bits) is now used internally during compile-time constant 5452folding to ensure that constants are truncated to 32 bits if necessary. 5453Previously, the revision ID value was only emitted in the AML table header. 5454 5455An error message is now generated for the Mutex and Method operators if the 5456SyncLevel parameter is outside the legal range of 0 through 15. 5457 5458Fixed a problem with the Method operator ParameterTypes list handling (ACPI 54593.0). Previously, more than 2 types or 2 arguments generated a syntax error. 5460The actual underlying implementation of method argument typechecking is 5461still under development, however. 5462 5463---------------------------------------- 546413 May 2005. Summary of changes for version 20050513: 5465 54661) ACPI CA Core Subsystem: 5467 5468Implemented support for PCI Express root bridges -- added support for device 5469PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup. 5470 5471The interpreter now automatically truncates incoming 64-bit constants to 32 5472bits if currently executing out of a 32-bit ACPI table (Revision < 2). This 5473also affects the iASL compiler constant folding. (Note: as per below, the 5474iASL compiler no longer allows 64-bit constants within 32-bit tables.) 5475 5476Fixed a problem where string and buffer objects with "static" pointers 5477(pointers to initialization data within an ACPI table) were not handled 5478consistently. The internal object copy operation now always copies the data 5479to a newly allocated buffer, regardless of whether the source object is 5480static or not. 5481 5482Fixed a problem with the FromBCD operator where an implicit result 5483conversion was improperly performed while storing the result to the target 5484operand. Since this is an "explicit conversion" operator, the implicit 5485conversion should never be performed on the output. 5486 5487Fixed a problem with the CopyObject operator where a copy to an existing 5488named object did not always completely overwrite the existing object stored 5489at name. Specifically, a buffer-to-buffer copy did not delete the existing 5490buffer. 5491 5492Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces and 5493structs for consistency. 5494 5495Code and Data Size: Current and previous core subsystem library sizes are 5496shown below. These are the code and data sizes for the acpica.lib produced 5497by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5498any ACPI driver or OSPM code. The debug version of the code includes the 5499debug output trace mechanism and has a much larger code and data size. Note 5500that these values will vary depending on the efficiency of the compiler and 5501the compiler options used during generation. 5502 5503 Previous Release: 5504 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 5505 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 5506 Current Release: (Same sizes) 5507 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 5508 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 5509 5510 55112) iASL Compiler/Disassembler: 5512 5513The compiler now emits a warning if an attempt is made to generate a 64-bit 5514integer constant from within a 32-bit ACPI table (Revision < 2). The integer 5515is truncated to 32 bits. 5516 5517Fixed a problem with large package objects: if the static length of the 5518package is greater than 255, the "variable length package" opcode is 5519emitted. Previously, this caused an error. This requires an update to the 5520ACPI spec, since it currently (incorrectly) states that packages larger than 5521255 elements are not allowed. 5522 5523The disassembler now correctly handles variable length packages and packages 5524larger than 255 elements. 5525 5526---------------------------------------- 552708 April 2005. Summary of changes for version 20050408: 5528 55291) ACPI CA Core Subsystem: 5530 5531Fixed three cases in the interpreter where an "index" argument to an ASL 5532function was still (internally) 32 bits instead of the required 64 bits. 5533This was the Index argument to the Index, Mid, and Match operators. 5534 5535The "strupr" function is now permanently local (AcpiUtStrupr), since this is 5536not a POSIX-defined function and not present in most kernel-level C 5537libraries. All references to the C library strupr function have been removed 5538from the headers. 5539 5540Completed the deployment of static functions/prototypes. All prototypes with 5541the static attribute have been moved from the headers to the owning C file. 5542 5543Implemented an extract option (-e) for the AcpiBin utility (AML binary 5544utility). This option allows the utility to extract individual ACPI tables 5545from the output of AcpiDmp. It provides the same functionality of the 5546acpixtract.pl perl script without the worry of setting the correct perl 5547options. AcpiBin runs on Windows and has not yet been generated/validated in 5548the Linux/Unix environment (but should be soon). 5549 5550Updated and fixed the table dump option for AcpiBin (-d). This option 5551converts a single ACPI table to a hex/ascii file, similar to the output of 5552AcpiDmp. 5553 5554Code and Data Size: Current and previous core subsystem library sizes are 5555shown below. These are the code and data sizes for the acpica.lib produced 5556by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5557any ACPI driver or OSPM code. The debug version of the code includes the 5558debug output trace mechanism and has a much larger code and data size. Note 5559that these values will vary depending on the efficiency of the compiler and 5560the compiler options used during generation. 5561 5562 Previous Release: 5563 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 5564 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 5565 Current Release: 5566 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 5567 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 5568 5569 55702) iASL Compiler/Disassembler: 5571 5572Disassembler fix: Added a check to ensure that the table length found in the 5573ACPI table header within the input file is not longer than the actual input 5574file size. This indicates some kind of file or table corruption. 5575 5576---------------------------------------- 557729 March 2005. Summary of changes for version 20050329: 5578 55791) ACPI CA Core Subsystem: 5580 5581An error is now generated if an attempt is made to create a Buffer Field of 5582length zero (A CreateField with a length operand of zero.) 5583 5584The interpreter now issues a warning whenever executable code at the module 5585level is detected during ACPI table load. This will give some idea of the 5586prevalence of this type of code. 5587 5588Implemented support for references to named objects (other than control 5589methods) within package objects. 5590 5591Enhanced package object output for the debug object. Package objects are now 5592completely dumped, showing all elements. 5593 5594Enhanced miscellaneous object output for the debug object. Any object can 5595now be written to the debug object (for example, a device object can be 5596written, and the type of the object will be displayed.) 5597 5598The "static" qualifier has been added to all local functions across both the 5599core subsystem and the iASL compiler. 5600 5601The number of "long" lines (> 80 chars) within the source has been 5602significantly reduced, by about 1/3. 5603 5604Cleaned up all header files to ensure that all CA/iASL functions are 5605prototyped (even static functions) and the formatting is consistent. 5606 5607Two new header files have been added, acopcode.h and acnames.h. 5608 5609Removed several obsolete functions that were no longer used. 5610 5611Code and Data Size: Current and previous core subsystem library sizes are 5612shown below. These are the code and data sizes for the acpica.lib produced 5613by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5614any ACPI driver or OSPM code. The debug version of the code includes the 5615debug output trace mechanism and has a much larger code and data size. Note 5616that these values will vary depending on the efficiency of the compiler and 5617the compiler options used during generation. 5618 5619 Previous Release: 5620 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 5621 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 5622 Current Release: 5623 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 5624 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 5625 5626 5627 56282) iASL Compiler/Disassembler: 5629 5630Fixed a problem with the resource descriptor generation/support. For the 5631ResourceSourceIndex and the ResourceSource fields, both must be present, or 5632both must be not present - can't have one without the other. 5633 5634The compiler now returns non-zero from the main procedure if any errors have 5635occurred during the compilation. 5636 5637 5638---------------------------------------- 563909 March 2005. Summary of changes for version 20050309: 5640 56411) ACPI CA Core Subsystem: 5642 5643The string-to-buffer implicit conversion code has been modified again after 5644a change to the ACPI specification. In order to match the behavior of the 5645other major ACPI implementation, the target buffer is no longer truncated if 5646the source string is smaller than an existing target buffer. This change 5647requires an update to the ACPI spec, and should eliminate the recent 5648AE_AML_BUFFER_LIMIT issues. 5649 5650The "implicit return" support was rewritten to a new algorithm that solves 5651the general case. Rather than attempt to determine when a method is about to 5652exit, the result of every ASL operator is saved momentarily until the very 5653next ASL operator is executed. Therefore, no matter how the method exits, 5654there will always be a saved implicit return value. This feature is only 5655enabled with the AcpiGbl_EnableInterpreterSlack flag, and should eliminate 5656AE_AML_NO_RETURN_VALUE errors when enabled. 5657 5658Implemented implicit conversion support for the predicate (operand) of the 5659If, Else, and While operators. String and Buffer arguments are automatically 5660converted to Integers. 5661 5662Changed the string-to-integer conversion behavior to match the new ACPI 5663errata: "If no integer object exists, a new integer is created. The ASCII 5664string is interpreted as a hexadecimal constant. Each string character is 5665interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting 5666with the first character as the most significant digit, and ending with the 5667first non-hexadecimal character or end-of-string." This means that the first 5668non-hex character terminates the conversion and this is the code that was 5669changed. 5670 5671Fixed a problem where the ObjectType operator would fail (fault) when used 5672on an Index of a Package which pointed to a null package element. The 5673operator now properly returns zero (Uninitialized) in this case. 5674 5675Fixed a problem where the While operator used excessive memory by not 5676properly popping the result stack during execution. There was no memory leak 5677after execution, however. (Code provided by Valery Podrezov.) 5678 5679Fixed a problem where references to control methods within Package objects 5680caused the method to be invoked, instead of producing a reference object 5681pointing to the method. 5682 5683Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree) to 5684improve performance and reduce code size. (Code provided by Alexey 5685Starikovskiy.) 5686 5687Code and Data Size: Current and previous core subsystem library sizes are 5688shown below. These are the code and data sizes for the acpica.lib produced 5689by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5690any ACPI driver or OSPM code. The debug version of the code includes the 5691debug output trace mechanism and has a much larger code and data size. Note 5692that these values will vary depending on the efficiency of the compiler and 5693the compiler options used during generation. 5694 5695 Previous Release: 5696 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 5697 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 5698 Current Release: 5699 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 5700 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 5701 5702 57032) iASL Compiler/Disassembler: 5704 5705Fixed a problem with the Return operator with no arguments. Since the AML 5706grammar for the byte encoding requires an operand for the Return opcode, the 5707compiler now emits a Return(Zero) for this case. An ACPI specification 5708update has been written for this case. 5709 5710For tables other than the DSDT, namepath optimization is automatically 5711disabled. This is because SSDTs can be loaded anywhere in the namespace, the 5712compiler has no knowledge of where, and thus cannot optimize namepaths. 5713 5714Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was 5715inadvertently omitted from the ACPI specification, and will require an 5716update to the spec. 5717 5718The source file scan for ASCII characters is now optional (-a). This change 5719was made because some vendors place non-ascii characters within comments. 5720However, the scan is simply a brute-force byte compare to ensure all 5721characters in the file are in the range 0x00 to 0x7F. 5722 5723Fixed a problem with the CondRefOf operator where the compiler was 5724inappropriately checking for the existence of the target. Since the point of 5725the operator is to check for the existence of the target at run-time, the 5726compiler no longer checks for the target existence. 5727 5728Fixed a problem where errors generated from the internal AML interpreter 5729during constant folding were not handled properly, causing a fault. 5730 5731Fixed a problem with overly aggressive range checking for the Stall 5732operator. The valid range (max 255) is now only checked if the operand is of 5733type Integer. All other operand types cannot be statically checked. 5734 5735Fixed a problem where control method references within the RefOf, DeRefOf, 5736and ObjectType operators were not treated properly. They are now treated as 5737actual references, not method invocations. 5738 5739Fixed and enhanced the "list namespace" option (-ln). This option was broken 5740a number of releases ago. 5741 5742Improved error handling for the Field, IndexField, and BankField operators. 5743The compiler now cleanly reports and recovers from errors in the field 5744component (FieldUnit) list. 5745 5746Fixed a disassembler problem where the optional ResourceDescriptor fields 5747TRS and TTP were not always handled correctly. 5748 5749Disassembler - Comments in output now use "//" instead of "/*" 5750 5751---------------------------------------- 575228 February 2005. Summary of changes for version 20050228: 5753 57541) ACPI CA Core Subsystem: 5755 5756Fixed a problem where the result of an Index() operator (an object 5757reference) must increment the reference count on the target object for the 5758life of the object reference. 5759 5760Implemented AML Interpreter and Debugger support for the new ACPI 3.0 5761Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and WordSpace 5762resource descriptors. 5763 5764Implemented support in the _OSI method for the ACPI 3.0 "Extended Address 5765Space Descriptor" string, indicating interpreter support for the descriptors 5766above. 5767 5768Implemented header support for the new ACPI 3.0 FADT flag bits. 5769 5770Implemented header support for the new ACPI 3.0 PCI Express bits for the PM1 5771status/enable registers. 5772 5773Updated header support for the MADT processor local Apic struct and MADT 5774platform interrupt source struct for new ACPI 3.0 fields. 5775 5776Implemented header support for the SRAT and SLIT ACPI tables. 5777 5778Implemented the -s switch in AcpiExec to enable the "InterpreterSlack" flag 5779at runtime. 5780 5781Code and Data Size: Current and previous core subsystem library sizes are 5782shown below. These are the code and data sizes for the acpica.lib produced 5783by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5784any ACPI driver or OSPM code. The debug version of the code includes the 5785debug output trace mechanism and has a much larger code and data size. Note 5786that these values will vary depending on the efficiency of the compiler and 5787the compiler options used during generation. 5788 5789 Previous Release: 5790 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 5791 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 5792 Current Release: 5793 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 5794 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 5795 5796 57972) iASL Compiler/Disassembler: 5798 5799Fixed a problem with the internal 64-bit String-to-integer conversion with 5800strings less than two characters long. 5801 5802Fixed a problem with constant folding where the result of the Index() 5803operator can not be considered a constant. This means that Index() cannot be 5804a type3 opcode and this will require an update to the ACPI specification. 5805 5806Disassembler: Implemented support for the TTP, MTP, and TRS resource 5807descriptor fields. These fields were inadvertently ignored and not output in 5808the disassembly of the resource descriptor. 5809 5810 5811 ---------------------------------------- 581211 February 2005. Summary of changes for version 20050211: 5813 58141) ACPI CA Core Subsystem: 5815 5816Implemented ACPI 3.0 support for implicit conversion within the Match() 5817operator. MatchObjects can now be of type integer, buffer, or string instead 5818of just type integer. Package elements are implicitly converted to the type 5819of the MatchObject. This change aligns the behavior of Match() with the 5820behavior of the other logical operators (LLess(), etc.) It also requires an 5821errata change to the ACPI specification as this support was intended for 5822ACPI 3.0, but was inadvertently omitted. 5823 5824Fixed a problem with the internal implicit "to buffer" conversion. Strings 5825that are converted to buffers will cause buffer truncation if the string is 5826smaller than the target buffer. Integers that are converted to buffers will 5827not cause buffer truncation, only zero extension (both as per the ACPI 5828spec.) The problem was introduced when code was added to truncate the 5829buffer, but this should not be performed in all cases, only the string case. 5830 5831Fixed a problem with the Buffer and Package operators where the interpreter 5832would get confused if two such operators were used as operands to an ASL 5833operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result 5834stack was not being popped after the execution of these operators, resulting 5835in an AE_NO_RETURN_VALUE exception. 5836 5837Fixed a problem with constructs of the form Store(Index(...),...). The 5838reference object returned from Index was inadvertently resolved to an actual 5839value. This problem was introduced in version 20050114 when the behavior of 5840Store() was modified to restrict the object types that can be used as the 5841source operand (to match the ACPI specification.) 5842 5843Reduced excessive stack use within the AcpiGetObjectInfo procedure. 5844 5845Added a fix to aclinux.h to allow generation of AcpiExec on Linux. 5846 5847Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct. 5848 5849Code and Data Size: Current and previous core subsystem library sizes are 5850shown below. These are the code and data sizes for the acpica.lib produced 5851by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5852any ACPI driver or OSPM code. The debug version of the code includes the 5853debug output trace mechanism and has a much larger code and data size. Note 5854that these values will vary depending on the efficiency of the compiler and 5855the compiler options used during generation. 5856 5857 Previous Release: 5858 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 5859 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 5860 Current Release: 5861 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 5862 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 5863 5864 58652) iASL Compiler/Disassembler: 5866 5867Fixed a code generation problem in the constant folding optimization code 5868where incorrect code was generated if a constant was reduced to a buffer 5869object (i.e., a reduced type 5 opcode.) 5870 5871Fixed a typechecking problem for the ToBuffer operator. Caused by an 5872incorrect return type in the internal opcode information table. 5873 5874---------------------------------------- 587525 January 2005. Summary of changes for version 20050125: 5876 58771) ACPI CA Core Subsystem: 5878 5879Fixed a recently introduced problem with the Global Lock where the 5880underlying semaphore was not created. This problem was introduced in 5881version 20050114, and caused an AE_AML_NO_OPERAND exception during an 5882Acquire() operation on _GL. 5883 5884The local object cache is now optional, and is disabled by default. Both 5885AcpiExec and the iASL compiler enable the cache because they run in user 5886mode and this enhances their performance. #define ACPI_ENABLE_OBJECT_CACHE 5887to enable the local cache. 5888 5889Fixed an issue in the internal function AcpiUtEvaluateObject concerning the 5890optional "implicit return" support where an error was returned if no return 5891object was expected, but one was implicitly returned. AE_OK is now returned 5892in this case and the implicitly returned object is deleted. 5893AcpiUtEvaluateObject is only occasionally used, and only to execute reserved 5894methods such as _STA and _INI where the return type is known up front. 5895 5896Fixed a few issues with the internal convert-to-integer code. It now returns 5897an error if an attempt is made to convert a null string, a string of only 5898blanks/tabs, or a zero-length buffer. This affects both implicit conversion 5899and explicit conversion via the ToInteger() operator. 5900 5901The internal debug code in AcpiUtAcquireMutex has been commented out. It is 5902not needed for normal operation and should increase the performance of the 5903entire subsystem. The code remains in case it is needed for debug purposes 5904again. 5905 5906The AcpiExec source and makefile are included in the Unix/Linux package for 5907the first time. 5908 5909Code and Data Size: Current and previous core subsystem library sizes are 5910shown below. These are the code and data sizes for the acpica.lib produced 5911by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5912any ACPI driver or OSPM code. The debug version of the code includes the 5913debug output trace mechanism and has a much larger code and data size. Note 5914that these values will vary depending on the efficiency of the compiler and 5915the compiler options used during generation. 5916 5917 Previous Release: 5918 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 5919 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 5920 Current Release: 5921 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 5922 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 5923 59242) iASL Compiler/Disassembler: 5925 5926Switch/Case support: A warning is now issued if the type of the Switch value 5927cannot be determined at compile time. For example, Switch(Arg0) will 5928generate the warning, and the type is assumed to be an integer. As per the 5929ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate the 5930warning. 5931 5932Switch/Case support: Implemented support for buffer and string objects as 5933the switch value. This is an ACPI 3.0 feature, now that LEqual supports 5934buffers and strings. 5935 5936Switch/Case support: The emitted code for the LEqual() comparisons now uses 5937the switch value as the first operand, not the second. The case value is now 5938the second operand, and this allows the case value to be implicitly 5939converted to the type of the switch value, not the other way around. 5940 5941Switch/Case support: Temporary variables are now emitted immediately within 5942the control method, not at the global level. This means that there are now 594336 temps available per-method, not 36 temps per-module as was the case with 5944the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.) 5945 5946---------------------------------------- 594714 January 2005. Summary of changes for version 20050114: 5948 5949Added 2005 copyright to all module headers. This affects every module in 5950the core subsystem, iASL compiler, and the utilities. 5951 59521) ACPI CA Core Subsystem: 5953 5954Fixed an issue with the String-to-Buffer conversion code where the string 5955null terminator was not included in the buffer after conversion, but there 5956is existing ASL that assumes the string null terminator is included. This is 5957the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was 5958introduced in the previous version when the code was updated to correctly 5959set the converted buffer size as per the ACPI specification. The ACPI spec 5960is ambiguous and will be updated to specify that the null terminator must be 5961included in the converted buffer. This also affects the ToBuffer() ASL 5962operator. 5963 5964Fixed a problem with the Mid() ASL/AML operator where it did not work 5965correctly on Buffer objects. Newly created sub-buffers were not being marked 5966as initialized. 5967 5968 5969Fixed a problem in AcpiTbFindTable where incorrect string compares were 5970performed on the OemId and OemTableId table header fields. These fields are 5971not null terminated, so strncmp is now used instead of strcmp. 5972 5973Implemented a restriction on the Store() ASL/AML operator to align the 5974behavior with the ACPI specification. Previously, any object could be used 5975as the source operand. Now, the only objects that may be used are Integers, 5976Buffers, Strings, Packages, Object References, and DDB Handles. If 5977necessary, the original behavior can be restored by enabling the 5978EnableInterpreterSlack flag. 5979 5980Enhanced the optional "implicit return" support to allow an implicit return 5981value from methods that are invoked externally via the AcpiEvaluateObject 5982interface. This enables implicit returns from the _STA and _INI methods, 5983for example. 5984 5985Changed the Revision() ASL/AML operator to return the current version of the 5986AML interpreter, in the YYYYMMDD format. Previously, it incorrectly returned 5987the supported ACPI version (This is the function of the _REV method). 5988 5989Updated the _REV predefined method to return the currently supported version 5990of ACPI, now 3. 5991 5992Implemented batch mode option for the AcpiExec utility (-b). 5993 5994Code and Data Size: Current and previous core subsystem library sizes are 5995shown below. These are the code and data sizes for the acpica.lib produced 5996by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5997any ACPI driver or OSPM code. The debug version of the code includes the 5998debug output trace mechanism and has a much larger code and data size. Note 5999that these values will vary depending on the efficiency of the compiler and 6000the compiler options used during generation. 6001 6002 Previous Release: 6003 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 6004 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 6005 Current Release: 6006 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 6007 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 6008 6009---------------------------------------- 601010 December 2004. Summary of changes for version 20041210: 6011 6012ACPI 3.0 support is nearing completion in both the iASL compiler and the 6013ACPI CA core subsystem. 6014 60151) ACPI CA Core Subsystem: 6016 6017Fixed a problem in the ToDecimalString operator where the resulting string 6018length was incorrectly calculated. The length is now calculated exactly, 6019eliminating incorrect AE_STRING_LIMIT exceptions. 6020 6021Fixed a problem in the ToHexString operator to allow a maximum 200 character 6022string to be produced. 6023 6024Fixed a problem in the internal string-to-buffer and buffer-to-buffer copy 6025routine where the length of the resulting buffer was not truncated to the 6026new size (if the target buffer already existed). 6027 6028Code and Data Size: Current and previous core subsystem library sizes are 6029shown below. These are the code and data sizes for the acpica.lib produced 6030by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6031any ACPI driver or OSPM code. The debug version of the code includes the 6032debug output trace mechanism and has a much larger code and data size. Note 6033that these values will vary depending on the efficiency of the compiler and 6034the compiler options used during generation. 6035 6036 Previous Release: 6037 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 6038 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 6039 Current Release: 6040 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 6041 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 6042 6043 60442) iASL Compiler/Disassembler: 6045 6046Implemented the new ACPI 3.0 resource template macros - DWordSpace, 6047ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace. 6048Includes support in the disassembler. 6049 6050Implemented support for the new (ACPI 3.0) parameter to the Register macro, 6051AccessSize. 6052 6053Fixed a problem where the _HE resource name for the Interrupt macro was 6054referencing bit 0 instead of bit 1. 6055 6056Implemented check for maximum 255 interrupts in the Interrupt macro. 6057 6058Fixed a problem with the predefined resource descriptor names where 6059incorrect AML code was generated if the offset within the resource buffer 6060was 0 or 1. The optimizer shortened the AML code to a single byte opcode 6061but did not update the surrounding package lengths. 6062 6063Changes to the Dma macro: All channels within the channel list must be in 6064the range 0-7. Maximum 8 channels can be specified. BusMaster operand is 6065optional (default is BusMaster). 6066 6067Implemented check for maximum 7 data bytes for the VendorShort macro. 6068 6069The ReadWrite parameter is now optional for the Memory32 and similar macros. 6070 6071---------------------------------------- 607203 December 2004. Summary of changes for version 20041203: 6073 60741) ACPI CA Core Subsystem: 6075 6076The low-level field insertion/extraction code (exfldio) has been completely 6077rewritten to eliminate unnecessary complexity, bugs, and boundary 6078conditions. 6079 6080Fixed a problem in the ToInteger, ToBuffer, ToHexString, and ToDecimalString 6081operators where the input operand could be inadvertently deleted if no 6082conversion was necessary (e.g., if the input to ToInteger was an Integer 6083object.) 6084 6085Fixed a problem with the ToDecimalString and ToHexString where an incorrect 6086exception code was returned if the resulting string would be > 200 chars. 6087AE_STRING_LIMIT is now returned. 6088 6089Fixed a problem with the Concatenate operator where AE_OK was always 6090returned, even if the operation failed. 6091 6092Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128 6093semaphores to be allocated. 6094 6095Code and Data Size: Current and previous core subsystem library sizes are 6096shown below. These are the code and data sizes for the acpica.lib produced 6097by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6098any ACPI driver or OSPM code. The debug version of the code includes the 6099debug output trace mechanism and has a much larger code and data size. Note 6100that these values will vary depending on the efficiency of the compiler and 6101the compiler options used during generation. 6102 6103 Previous Release: 6104 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 6105 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 6106 Current Release: 6107 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 6108 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 6109 6110 61112) iASL Compiler/Disassembler: 6112 6113Fixed typechecking for the ObjectType and SizeOf operators. Problem was 6114recently introduced in 20041119. 6115 6116Fixed a problem with the ToUUID macro where the upper nybble of each buffer 6117byte was inadvertently set to zero. 6118 6119---------------------------------------- 612019 November 2004. Summary of changes for version 20041119: 6121 61221) ACPI CA Core Subsystem: 6123 6124Fixed a problem in the internal ConvertToInteger routine where new integers 6125were not truncated to 32 bits for 32-bit ACPI tables. This routine converts 6126buffers and strings to integers. 6127 6128Implemented support to store a value to an Index() on a String object. This 6129is an ACPI 2.0 feature that had not yet been implemented. 6130 6131Implemented new behavior for storing objects to individual package elements 6132(via the Index() operator). The previous behavior was to invoke the implicit 6133conversion rules if an object was already present at the index. The new 6134behavior is to simply delete any existing object and directly store the new 6135object. Although the ACPI specification seems unclear on this subject, other 6136ACPI implementations behave in this manner. (This is the root of the 6137AE_BAD_HEX_CONSTANT issue.) 6138 6139Modified the RSDP memory scan mechanism to support the extended checksum for 6140ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid 6141RSDP signature is found with a valid checksum. 6142 6143Code and Data Size: Current and previous core subsystem library sizes are 6144shown below. These are the code and data sizes for the acpica.lib produced 6145by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6146any ACPI driver or OSPM code. The debug version of the code includes the 6147debug output trace mechanism and has a much larger code and data size. Note 6148that these values will vary depending on the efficiency of the compiler and 6149the compiler options used during generation. 6150 6151 Previous Release: 6152 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 6153 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 6154 Current Release: 6155 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 6156 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 6157 6158 61592) iASL Compiler/Disassembler: 6160 6161Fixed a missing semicolon in the aslcompiler.y file. 6162 6163---------------------------------------- 616405 November 2004. Summary of changes for version 20041105: 6165 61661) ACPI CA Core Subsystem: 6167 6168Implemented support for FADT revision 2. This was an interim table (between 6169ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register. 6170 6171Implemented optional support to allow uninitialized LocalX and ArgX 6172variables in a control method. The variables are initialized to an Integer 6173object with a value of zero. This support is enabled by setting the 6174AcpiGbl_EnableInterpreterSlack flag to TRUE. 6175 6176Implemented support for Integer objects for the SizeOf operator. Either 4 6177or 8 is returned, depending on the current integer size (32-bit or 64-bit, 6178depending on the parent table revision). 6179 6180Fixed a problem in the implementation of the SizeOf and ObjectType operators 6181where the operand was resolved to a value too early, causing incorrect 6182return values for some objects. 6183 6184Fixed some possible memory leaks during exceptional conditions. 6185 6186Code and Data Size: Current and previous core subsystem library sizes are 6187shown below. These are the code and data sizes for the acpica.lib produced 6188by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6189any ACPI driver or OSPM code. The debug version of the code includes the 6190debug output trace mechanism and has a much larger code and data size. Note 6191that these values will vary depending on the efficiency of the compiler and 6192the compiler options used during generation. 6193 6194 Previous Release: 6195 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 6196 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 6197 Current Release: 6198 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 6199 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 6200 6201 62022) iASL Compiler/Disassembler: 6203 6204Implemented support for all ACPI 3.0 reserved names and methods. 6205 6206Implemented all ACPI 3.0 grammar elements in the front-end, including 6207support for semicolons. 6208 6209Implemented the ACPI 3.0 Function() and ToUUID() macros 6210 6211Fixed a problem in the disassembler where a Scope() operator would not be 6212emitted properly if the target of the scope was in another table. 6213 6214---------------------------------------- 621515 October 2004. Summary of changes for version 20041015: 6216 6217Note: ACPI CA is currently undergoing an in-depth and complete formal 6218evaluation to test/verify the following areas. Other suggestions are 6219welcome. This will result in an increase in the frequency of releases and 6220the number of bug fixes in the next few months. 6221 - Functional tests for all ASL/AML operators 6222 - All implicit/explicit type conversions 6223 - Bit fields and operation regions 6224 - 64-bit math support and 32-bit-only "truncated" math support 6225 - Exceptional conditions, both compiler and interpreter 6226 - Dynamic object deletion and memory leaks 6227 - ACPI 3.0 support when implemented 6228 - External interfaces to the ACPI subsystem 6229 6230 62311) ACPI CA Core Subsystem: 6232 6233Fixed two alignment issues on 64-bit platforms - within debug statements in 6234AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the Address 6235field within the non-aligned ACPI generic address structure. 6236 6237Fixed a problem in the Increment and Decrement operators where incorrect 6238operand resolution could result in the inadvertent modification of the 6239original integer when the integer is passed into another method as an 6240argument and the arg is then incremented/decremented. 6241 6242Fixed a problem in the FromBCD operator where the upper 32-bits of a 64-bit 6243BCD number were truncated during conversion. 6244 6245Fixed a problem in the ToDecimal operator where the length of the resulting 6246string could be set incorrectly too long if the input operand was a Buffer 6247object. 6248 6249Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte (0) 6250within a buffer would prematurely terminate a compare between buffer 6251objects. 6252 6253Added a check for string overflow (>200 characters as per the ACPI 6254specification) during the Concatenate operator with two string operands. 6255 6256Code and Data Size: Current and previous core subsystem library sizes are 6257shown below. These are the code and data sizes for the acpica.lib produced 6258by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6259any ACPI driver or OSPM code. The debug version of the code includes the 6260debug output trace mechanism and has a much larger code and data size. Note 6261that these values will vary depending on the efficiency of the compiler and 6262the compiler options used during generation. 6263 6264 Previous Release: 6265 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 6266 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 6267 Current Release: 6268 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 6269 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 6270 6271 6272 62732) iASL Compiler/Disassembler: 6274 6275Allow the use of the ObjectType operator on uninitialized Locals and Args 6276(returns 0 as per the ACPI specification). 6277 6278Fixed a problem where the compiler would fault if there was a syntax error 6279in the FieldName of all of the various CreateXXXField operators. 6280 6281Disallow the use of lower case letters within the EISAID macro, as per the 6282ACPI specification. All EISAID strings must be of the form "UUUNNNN" Where 6283U is an uppercase letter and N is a hex digit. 6284 6285 6286---------------------------------------- 628706 October 2004. Summary of changes for version 20041006: 6288 62891) ACPI CA Core Subsystem: 6290 6291Implemented support for the ACPI 3.0 Timer operator. This ASL function 6292implements a 64-bit timer with 100 nanosecond granularity. 6293 6294Defined a new OSL interface, AcpiOsGetTimer. This interface is used to 6295implement the ACPI 3.0 Timer operator. This allows the host OS to implement 6296the timer with the best clock available. Also, it keeps the core subsystem 6297out of the clock handling business, since the host OS (usually) performs 6298this function. 6299 6300Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write) 6301functions use a 64-bit address which is part of the packed ACPI Generic 6302Address Structure. Since the structure is non-aligned, the alignment macros 6303are now used to extract the address to a local variable before use. 6304 6305Fixed a problem where the ToInteger operator assumed all input strings were 6306hexadecimal. The operator now handles both decimal strings and hex strings 6307(prefixed with "0x"). 6308 6309Fixed a problem where the string length in the string object created as a 6310result of the internal ConvertToString procedure could be incorrect. This 6311potentially affected all implicit conversions and also the ToDecimalString 6312and ToHexString operators. 6313 6314Fixed two problems in the ToString operator. If the length parameter was 6315zero, an incorrect string object was created and the value of the input 6316length parameter was inadvertently changed from zero to Ones. 6317 6318Fixed a problem where the optional ResourceSource string in the ExtendedIRQ 6319resource macro was ignored. 6320 6321Simplified the interfaces to the internal division functions, reducing code 6322size and complexity. 6323 6324Code and Data Size: Current and previous core subsystem library sizes are 6325shown below. These are the code and data sizes for the acpica.lib produced 6326by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6327any ACPI driver or OSPM code. The debug version of the code includes the 6328debug output trace mechanism and has a much larger code and data size. Note 6329that these values will vary depending on the efficiency of the compiler and 6330the compiler options used during generation. 6331 6332 Previous Release: 6333 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 6334 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 6335 Current Release: 6336 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 6337 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 6338 6339 63402) iASL Compiler/Disassembler: 6341 6342Implemented support for the ACPI 3.0 Timer operator. 6343 6344Fixed a problem where the Default() operator was inadvertently ignored in a 6345Switch/Case block. This was a problem in the translation of the Switch 6346statement to If...Else pairs. 6347 6348Added support to allow a standalone Return operator, with no parentheses (or 6349operands). 6350 6351Fixed a problem with code generation for the ElseIf operator where the 6352translated Else...If parse tree was improperly constructed leading to the 6353loss of some code. 6354 6355---------------------------------------- 635622 September 2004. Summary of changes for version 20040922: 6357 63581) ACPI CA Core Subsystem: 6359 6360Fixed a problem with the implementation of the LNot() operator where "Ones" 6361was not returned for the TRUE case. Changed the code to return Ones instead 6362of (!Arg) which was usually 1. This change affects iASL constant folding for 6363this operator also. 6364 6365Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was not 6366initialized properly -- Now zero the entire buffer in this case where the 6367buffer already exists. 6368 6369Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32 6370Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all 6371related code considerably. This will require changes/updates to all OS 6372interface layers (OSLs.) 6373 6374Implemented a new external interface, AcpiInstallExceptionHandler, to allow 6375a system exception handler to be installed. This handler is invoked upon any 6376run-time exception that occurs during control method execution. 6377 6378Added support for the DSDT in AcpiTbFindTable. This allows the 6379DataTableRegion() operator to access the local copy of the DSDT. 6380 6381Code and Data Size: Current and previous core subsystem library sizes are 6382shown below. These are the code and data sizes for the acpica.lib produced 6383by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6384any ACPI driver or OSPM code. The debug version of the code includes the 6385debug output trace mechanism and has a much larger code and data size. Note 6386that these values will vary depending on the efficiency of the compiler and 6387the compiler options used during generation. 6388 6389 Previous Release: 6390 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 6391 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 6392 Current Release: 6393 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 6394 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 6395 6396 63972) iASL Compiler/Disassembler: 6398 6399Fixed a problem with constant folding and the LNot operator. LNot was 6400returning 1 in the TRUE case, not Ones as per the ACPI specification. This 6401could result in the generation of an incorrect folded/reduced constant. 6402 6403End-Of-File is now allowed within a "//"-style comment. A parse error no 6404longer occurs if such a comment is at the very end of the input ASL source 6405file. 6406 6407Implemented the "-r" option to override the Revision in the table header. 6408The initial use of this option will be to simplify the evaluation of the AML 6409interpreter by allowing a single ASL source module to be compiled for either 641032-bit or 64-bit integers. 6411 6412 6413---------------------------------------- 641427 August 2004. Summary of changes for version 20040827: 6415 64161) ACPI CA Core Subsystem: 6417 6418- Implemented support for implicit object conversion in the non-numeric 6419logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual, and 6420LNotEqual.) Any combination of Integers/Strings/Buffers may now be used; 6421the second operand is implicitly converted on the fly to match the type of 6422the first operand. For example: 6423 6424 LEqual (Source1, Source2) 6425 6426Source1 and Source2 must each evaluate to an integer, a string, or a buffer. 6427The data type of Source1 dictates the required type of Source2. Source2 is 6428implicitly converted if necessary to match the type of Source1. 6429 6430- Updated and corrected the behavior of the string conversion support. The 6431rules concerning conversion of buffers to strings (according to the ACPI 6432specification) are as follows: 6433 6434ToDecimalString - explicit byte-wise conversion of buffer to string of 6435decimal values (0-255) separated by commas. ToHexString - explicit byte-wise 6436conversion of buffer to string of hex values (0-FF) separated by commas. 6437ToString - explicit byte-wise conversion of buffer to string. Byte-by-byte 6438copy with no transform except NULL terminated. Any other implicit buffer-to- 6439string conversion - byte-wise conversion of buffer to string of hex values 6440(0-FF) separated by spaces. 6441 6442- Fixed typo in definition of AcpiGbl_EnableInterpreterSlack. 6443 6444- Fixed a problem in AcpiNsGetPathnameLength where the returned length was 6445one byte too short in the case of a node in the root scope. This could 6446cause a fault during debug output. 6447 6448- Code and Data Size: Current and previous core subsystem library sizes are 6449shown below. These are the code and data sizes for the acpica.lib produced 6450by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6451any ACPI driver or OSPM code. The debug version of the code includes the 6452debug output trace mechanism and has a much larger code and data size. Note 6453that these values will vary depending on the efficiency of the compiler and 6454the compiler options used during generation. 6455 6456 Previous Release: 6457 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 6458 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 6459 Current Release: 6460 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 6461 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 6462 6463 64642) iASL Compiler/Disassembler: 6465 6466- Fixed a Linux generation error. 6467 6468 6469---------------------------------------- 647016 August 2004. Summary of changes for version 20040816: 6471 64721) ACPI CA Core Subsystem: 6473 6474Designed and implemented support within the AML interpreter for the so- 6475called "implicit return". This support returns the result of the last ASL 6476operation within a control method, in the absence of an explicit Return() 6477operator. A few machines depend on this behavior, even though it is not 6478explicitly supported by the ASL language. It is optional support that can 6479be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag. 6480 6481Removed support for the PCI_Config address space from the internal low level 6482hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This 6483support was not used internally, and would not work correctly anyway because 6484the PCI bus number and segment number were not supported. There are 6485separate interfaces for PCI configuration space access because of the unique 6486interface. 6487 6488Code and Data Size: Current and previous core subsystem library sizes are 6489shown below. These are the code and data sizes for the acpica.lib produced 6490by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6491any ACPI driver or OSPM code. The debug version of the code includes the 6492debug output trace mechanism and has a much larger code and data size. Note 6493that these values will vary depending on the efficiency of the compiler and 6494the compiler options used during generation. 6495 6496 Previous Release: 6497 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 6498 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 6499 Current Release: 6500 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 6501 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 6502 6503 65042) iASL Compiler/Disassembler: 6505 6506Fixed a problem where constants in ASL expressions at the root level (not 6507within a control method) could be inadvertently truncated during code 6508generation. This problem was introduced in the 20040715 release. 6509 6510 6511---------------------------------------- 651215 July 2004. Summary of changes for version 20040715: 6513 65141) ACPI CA Core Subsystem: 6515 6516Restructured the internal HW GPE interfaces to pass/track the current state 6517of interrupts (enabled/disabled) in order to avoid possible deadlock and 6518increase flexibility of the interfaces. 6519 6520Implemented a "lexicographical compare" for String and Buffer objects within 6521the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual -- 6522as per further clarification to the ACPI specification. Behavior is similar 6523to C library "strcmp". 6524 6525Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable 6526external function. In the 32-bit non-debug case, the stack use has been 6527reduced from 168 bytes to 32 bytes. 6528 6529Deployed a new run-time configuration flag, AcpiGbl_EnableInterpreterSlack, 6530whose purpose is to allow the AML interpreter to forgive certain bad AML 6531constructs. Default setting is FALSE. 6532 6533Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field IO 6534support code. If enabled, it allows field access to go beyond the end of a 6535region definition if the field is within the region length rounded up to the 6536next access width boundary (a common coding error.) 6537 6538Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to 6539ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also, these 6540symbols are lowercased by the latest version of the AcpiSrc tool. 6541 6542The prototypes for the PCI interfaces in acpiosxf.h have been updated to 6543rename "Register" to simply "Reg" to prevent certain compilers from 6544complaining. 6545 6546Code and Data Size: Current and previous core subsystem library sizes are 6547shown below. These are the code and data sizes for the acpica.lib produced 6548by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6549any ACPI driver or OSPM code. The debug version of the code includes the 6550debug output trace mechanism and has a much larger code and data size. Note 6551that these values will vary depending on the efficiency of the compiler and 6552the compiler options used during generation. 6553 6554 Previous Release: 6555 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 6556 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 6557 Current Release: 6558 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 6559 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 6560 6561 65622) iASL Compiler/Disassembler: 6563 6564Implemented full support for Package objects within the Case() operator. 6565Note: The Break() operator is currently not supported within Case blocks 6566(TermLists) as there is some question about backward compatibility with ACPI 65671.0 interpreters. 6568 6569 6570Fixed a problem where complex terms were not supported properly within the 6571Switch() operator. 6572 6573Eliminated extraneous warning for compiler-emitted reserved names of the 6574form "_T_x". (Used in Switch/Case operators.) 6575 6576Eliminated optimization messages for "_T_x" objects and small constants 6577within the DefinitionBlock operator. 6578 6579 6580---------------------------------------- 658115 June 2004. Summary of changes for version 20040615: 6582 65831) ACPI CA Core Subsystem: 6584 6585Implemented support for Buffer and String objects (as per ACPI 2.0) for the 6586following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 6587LLessEqual. 6588 6589All directory names in the entire source package are lower case, as they 6590were in earlier releases. 6591 6592Implemented "Disassemble" command in the AML debugger that will disassemble 6593a single control method. 6594 6595Code and Data Size: Current and previous core subsystem library sizes are 6596shown below. These are the code and data sizes for the acpica.lib produced 6597by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6598any ACPI driver or OSPM code. The debug version of the code includes the 6599debug output trace mechanism and has a much larger code and data size. Note 6600that these values will vary depending on the efficiency of the compiler and 6601the compiler options used during generation. 6602 6603 Previous Release: 6604 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 6605 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 6606 6607 Current Release: 6608 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 6609 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 6610 6611 66122) iASL Compiler/Disassembler: 6613 6614Implemented support for Buffer and String objects (as per ACPI 2.0) for the 6615following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 6616LLessEqual. 6617 6618All directory names in the entire source package are lower case, as they 6619were in earlier releases. 6620 6621Fixed a fault when using the -g or -d<nofilename> options if the FADT was 6622not found. 6623 6624Fixed an issue with the Windows version of the compiler where later versions 6625of Windows place the FADT in the registry under the name "FADT" and not 6626"FACP" as earlier versions did. This applies when using the -g or - 6627d<nofilename> options. The compiler now looks for both strings as 6628necessary. 6629 6630Fixed a problem with compiler namepath optimization where a namepath within 6631the Scope() operator could not be optimized if the namepath was a subpath of 6632the current scope path. 6633 6634---------------------------------------- 663527 May 2004. Summary of changes for version 20040527: 6636 66371) ACPI CA Core Subsystem: 6638 6639Completed a new design and implementation for EBDA (Extended BIOS Data Area) 6640support in the RSDP scan code. The original code improperly scanned for the 6641EBDA by simply scanning from memory location 0 to 0x400. The correct method 6642is to first obtain the EBDA pointer from within the BIOS data area, then 6643scan 1K of memory starting at the EBDA pointer. There appear to be few if 6644any machines that place the RSDP in the EBDA, however. 6645 6646Integrated a fix for a possible fault during evaluation of BufferField 6647arguments. Obsolete code that was causing the problem was removed. 6648 6649Found and fixed a problem in the Field Support Code where data could be 6650corrupted on a bit field read that starts on an aligned boundary but does 6651not end on an aligned boundary. Merged the read/write "datum length" 6652calculation code into a common procedure. 6653 6654Rolled in a couple of changes to the FreeBSD-specific header. 6655 6656 6657Code and Data Size: Current and previous core subsystem library sizes are 6658shown below. These are the code and data sizes for the acpica.lib produced 6659by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6660any ACPI driver or OSPM code. The debug version of the code includes the 6661debug output trace mechanism and has a much larger code and data size. Note 6662that these values will vary depending on the efficiency of the compiler and 6663the compiler options used during generation. 6664 6665 Previous Release: 6666 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 6667 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 6668 Current Release: 6669 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 6670 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 6671 6672 66732) iASL Compiler/Disassembler: 6674 6675Fixed a generation warning produced by some overly-verbose compilers for a 667664-bit constant. 6677 6678---------------------------------------- 667914 May 2004. Summary of changes for version 20040514: 6680 66811) ACPI CA Core Subsystem: 6682 6683Fixed a problem where hardware GPE enable bits sometimes not set properly 6684during and after GPE method execution. Result of 04/27 changes. 6685 6686Removed extra "clear all GPEs" when sleeping/waking. 6687 6688Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single 6689AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above to 6690the new AcpiEv* calls as appropriate. 6691 6692ACPI_OS_NAME was removed from the OS-specific headers. The default name is 6693now "Microsoft Windows NT" for maximum compatibility. However this can be 6694changed by modifying the acconfig.h file. 6695 6696Allow a single invocation of AcpiInstallNotifyHandler for a handler that 6697traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag. 6698 6699Run _INI methods on ThermalZone objects. This is against the ACPI 6700specification, but there is apparently ASL code in the field that has these 6701_INI methods, and apparently "other" AML interpreters execute them. 6702 6703Performed a full 16/32/64 bit lint that resulted in some small changes. 6704 6705Added a sleep simulation command to the AML debugger to test sleep code. 6706 6707Code and Data Size: Current and previous core subsystem library sizes are 6708shown below. These are the code and data sizes for the acpica.lib produced 6709by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6710any ACPI driver or OSPM code. The debug version of the code includes the 6711debug output trace mechanism and has a much larger code and data size. Note 6712that these values will vary depending on the efficiency of the compiler and 6713the compiler options used during generation. 6714 6715 Previous Release: 6716 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 6717 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 6718 Current Release: 6719 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 6720 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 6721 6722---------------------------------------- 672327 April 2004. Summary of changes for version 20040427: 6724 67251) ACPI CA Core Subsystem: 6726 6727Completed a major overhaul of the GPE handling within ACPI CA. There are 6728now three types of GPEs: wake-only, runtime-only, and combination wake/run. 6729The only GPEs allowed to be combination wake/run are for button-style 6730devices such as a control-method power button, control-method sleep button, 6731or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are not 6732referenced by any _PRW methods are marked for "runtime" and hardware 6733enabled. Any GPE that is referenced by a _PRW method is marked for "wake" 6734(and disabled at runtime). However, at sleep time, only those GPEs that 6735have been specifically enabled for wake via the AcpiEnableGpe interface will 6736actually be hardware enabled. 6737 6738A new external interface has been added, AcpiSetGpeType(), that is meant to 6739be used by device drivers to force a GPE to a particular type. It will be 6740especially useful for the drivers for the button devices mentioned above. 6741 6742Completed restructuring of the ACPI CA initialization sequence so that 6743default operation region handlers are installed before GPEs are initialized 6744and the _PRW methods are executed. This will prevent errors when the _PRW 6745methods attempt to access system memory or I/O space. 6746 6747GPE enable/disable no longer reads the GPE enable register. We now keep the 6748enable info for runtime and wake separate and in the GPE_EVENT_INFO. We 6749thus no longer depend on the hardware to maintain these bits. 6750 6751Always clear the wake status and fixed/GPE status bits before sleep, even 6752for state S5. 6753 6754Improved the AML debugger output for displaying the GPE blocks and their 6755current status. 6756 6757Added new strings for the _OSI method, of the form "Windows 2001 SPx" where 6758x = 0,1,2,3,4. 6759 6760Fixed a problem where the physical address was incorrectly calculated when 6761the Load() operator was used to directly load from an Operation Region (vs. 6762loading from a Field object.) Also added check for minimum table length for 6763this case. 6764 6765Fix for multiple mutex acquisition. Restore original thread SyncLevel on 6766mutex release. 6767 6768Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for 6769consistency with the other fields returned. 6770 6771Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such 6772structure for each GPE in the system, so the size of this structure is 6773important. 6774 6775CPU stack requirement reduction: Cleaned up the method execution and object 6776evaluation paths so that now a parameter structure is passed, instead of 6777copying the various method parameters over and over again. 6778 6779In evregion.c: Correctly exit and reenter the interpreter region if and 6780only if dispatching an operation region request to a user-installed handler. 6781Do not exit/reenter when dispatching to a default handler (e.g., default 6782system memory or I/O handlers) 6783 6784 6785Notes for updating drivers for the new GPE support. The following changes 6786must be made to ACPI-related device drivers that are attached to one or more 6787GPEs: (This information will be added to the ACPI CA Programmer Reference.) 6788 67891) AcpiInstallGpeHandler no longer automatically enables the GPE, you must 6790explicitly call AcpiEnableGpe. 67912) There is a new interface called AcpiSetGpeType. This should be called 6792before enabling the GPE. Also, this interface will automatically disable 6793the GPE if it is currently enabled. 67943) AcpiEnableGpe no longer supports a GPE type flag. 6795 6796Specific drivers that must be changed: 67971) EC driver: 6798 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED, 6799AeGpeHandler, NULL); 6800 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME); 6801 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR); 6802 68032) Button Drivers (Power, Lid, Sleep): 6804Run _PRW method under parent device 6805If _PRW exists: /* This is a control-method button */ 6806 Extract GPE number and possibly GpeDevice 6807 AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN); 6808 AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR); 6809 6810For all other devices that have _PRWs, we automatically set the GPE type to 6811ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled. This 6812must be done on a selective basis, usually requiring some kind of user app 6813to allow the user to pick the wake devices. 6814 6815 6816Code and Data Size: Current and previous core subsystem library sizes are 6817shown below. These are the code and data sizes for the acpica.lib produced 6818by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6819any ACPI driver or OSPM code. The debug version of the code includes the 6820debug output trace mechanism and has a much larger code and data size. Note 6821that these values will vary depending on the efficiency of the compiler and 6822the compiler options used during generation. 6823 6824 Previous Release: 6825 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 6826 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 6827 Current Release: 6828 6829 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 6830 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 6831 6832 6833 6834---------------------------------------- 683502 April 2004. Summary of changes for version 20040402: 6836 68371) ACPI CA Core Subsystem: 6838 6839Fixed an interpreter problem where an indirect store through an ArgX 6840parameter was incorrectly applying the "implicit conversion rules" during 6841the store. From the ACPI specification: "If the target is a method local or 6842argument (LocalX or ArgX), no conversion is performed and the result is 6843stored directly to the target". The new behavior is to disable implicit 6844conversion during ALL stores to an ArgX. 6845 6846Changed the behavior of the _PRW method scan to ignore any and all errors 6847returned by a given _PRW. This prevents the scan from aborting from the 6848failure of any single _PRW. 6849 6850Moved the runtime configuration parameters from the global init procedure to 6851static variables in acglobal.h. This will allow the host to override the 6852default values easily. 6853 6854Code and Data Size: Current and previous core subsystem library sizes are 6855shown below. These are the code and data sizes for the acpica.lib produced 6856by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6857any ACPI driver or OSPM code. The debug version of the code includes the 6858debug output trace mechanism and has a much larger code and data size. Note 6859that these values will vary depending on the efficiency of the compiler and 6860the compiler options used during generation. 6861 6862 Previous Release: 6863 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 6864 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 6865 Current Release: 6866 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 6867 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 6868 6869 68702) iASL Compiler/Disassembler: 6871 6872iASL now fully disassembles SSDTs. However, External() statements are not 6873generated automatically for unresolved symbols at this time. This is a 6874planned feature for future implementation. 6875 6876Fixed a scoping problem in the disassembler that occurs when the type of the 6877target of a Scope() operator is overridden. This problem caused an 6878incorrectly nested internal namespace to be constructed. 6879 6880Any warnings or errors that are emitted during disassembly are now commented 6881out automatically so that the resulting file can be recompiled without any 6882hand editing. 6883 6884---------------------------------------- 688526 March 2004. Summary of changes for version 20040326: 6886 68871) ACPI CA Core Subsystem: 6888 6889Implemented support for "wake" GPEs via interaction between GPEs and the 6890_PRW methods. Every GPE that is pointed to by one or more _PRWs is 6891identified as a WAKE GPE and by default will no longer be enabled at 6892runtime. Previously, we were blindly enabling all GPEs with a corresponding 6893_Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway. We 6894believe this has been the cause of thousands of "spurious" GPEs on some 6895systems. 6896 6897This new GPE behavior is can be reverted to the original behavior (enable 6898ALL GPEs at runtime) via a runtime flag. 6899 6900Fixed a problem where aliased control methods could not access objects 6901properly. The proper scope within the namespace was not initialized 6902(transferred to the target of the aliased method) before executing the 6903target method. 6904 6905Fixed a potential race condition on internal object deletion on the return 6906object in AcpiEvaluateObject. 6907 6908Integrated a fix for resource descriptors where both _MEM and _MTP were 6909being extracted instead of just _MEM. (i.e. bitmask was incorrectly too 6910wide, 0x0F instead of 0x03.) 6911 6912Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName, preventing a 6913fault in some cases. 6914 6915Updated Notify() values for debug statements in evmisc.c 6916 6917Return proper status from AcpiUtMutexInitialize, not just simply AE_OK. 6918 6919Code and Data Size: Current and previous core subsystem library sizes are 6920shown below. These are the code and data sizes for the acpica.lib produced 6921by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6922any ACPI driver or OSPM code. The debug version of the code includes the 6923debug output trace mechanism and has a much larger code and data size. Note 6924that these values will vary depending on the efficiency of the compiler and 6925the compiler options used during generation. 6926 6927 Previous Release: 6928 6929 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 6930 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 6931 Current Release: 6932 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 6933 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 6934 6935---------------------------------------- 693611 March 2004. Summary of changes for version 20040311: 6937 69381) ACPI CA Core Subsystem: 6939 6940Fixed a problem where errors occurring during the parse phase of control 6941method execution did not abort cleanly. For example, objects created and 6942installed in the namespace were not deleted. This caused all subsequent 6943invocations of the method to return the AE_ALREADY_EXISTS exception. 6944 6945Implemented a mechanism to force a control method to "Serialized" execution 6946if the method attempts to create namespace objects. (The root of the 6947AE_ALREADY_EXISTS problem.) 6948 6949Implemented support for the predefined _OSI "internal" control method. 6950Initial supported strings are "Linux", "Windows 2000", "Windows 2001", and 6951"Windows 2001.1", and can be easily upgraded for new strings as necessary. 6952This feature will allow "other" operating systems to execute the fully 6953tested, "Windows" code path through the ASL code 6954 6955Global Lock Support: Now allows multiple acquires and releases with any 6956internal thread. Removed concept of "owning thread" for this special mutex. 6957 6958Fixed two functions that were inappropriately declaring large objects on the 6959CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage during 6960method execution considerably. 6961 6962Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the 6963S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT. 6964 6965Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs 6966defined on the machine. 6967 6968Implemented two runtime options: One to force all control method execution 6969to "Serialized" to mimic Windows behavior, another to disable _OSI support 6970if it causes problems on a given machine. 6971 6972Code and Data Size: Current and previous core subsystem library sizes are 6973shown below. These are the code and data sizes for the acpica.lib produced 6974by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6975any ACPI driver or OSPM code. The debug version of the code includes the 6976debug output trace mechanism and has a much larger code and data size. Note 6977that these values will vary depending on the efficiency of the compiler and 6978the compiler options used during generation. 6979 6980 Previous Release: 6981 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 6982 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 6983 Current Release: 6984 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 6985 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 6986 69872) iASL Compiler/Disassembler: 6988 6989Fixed an array size problem for FreeBSD that would cause the compiler to 6990fault. 6991 6992---------------------------------------- 699320 February 2004. Summary of changes for version 20040220: 6994 6995 69961) ACPI CA Core Subsystem: 6997 6998Implemented execution of _SxD methods for Device objects in the 6999GetObjectInfo interface. 7000 7001Fixed calls to _SST method to pass the correct arguments. 7002 7003Added a call to _SST on wake to restore to "working" state. 7004 7005Check for End-Of-Buffer failure case in the WalkResources interface. 7006 7007Integrated fix for 64-bit alignment issue in acglobal.h by moving two 7008structures to the beginning of the file. 7009 7010After wake, clear GPE status register(s) before enabling GPEs. 7011 7012After wake, clear/enable power button. (Perhaps we should clear/enable all 7013fixed events upon wake.) 7014 7015Fixed a couple of possible memory leaks in the Namespace manager. 7016 7017Integrated latest acnetbsd.h file. 7018 7019---------------------------------------- 702011 February 2004. Summary of changes for version 20040211: 7021 7022 70231) ACPI CA Core Subsystem: 7024 7025Completed investigation and implementation of the call-by-reference 7026mechanism for control method arguments. 7027 7028Fixed a problem where a store of an object into an indexed package could 7029fail if the store occurs within a different method than the method that 7030created the package. 7031 7032Fixed a problem where the ToDecimal operator could return incorrect results. 7033 7034Fixed a problem where the CopyObject operator could fail on some of the more 7035obscure objects (e.g., Reference objects.) 7036 7037Improved the output of the Debug object to display buffer, package, and 7038index objects. 7039 7040Fixed a problem where constructs of the form "RefOf (ArgX)" did not return 7041the expected result. 7042 7043Added permanent ACPI_REPORT_ERROR macros for all instances of the 7044ACPI_AML_INTERNAL exception. 7045 7046Integrated latest version of acfreebsd.h 7047 7048---------------------------------------- 704916 January 2004. Summary of changes for version 20040116: 7050 7051The purpose of this release is primarily to update the copyright years in 7052each module, thus causing a huge number of diffs. There are a few small 7053functional changes, however. 7054 70551) ACPI CA Core Subsystem: 7056 7057Improved error messages when there is a problem finding one or more of the 7058required base ACPI tables 7059 7060Reintroduced the definition of APIC_HEADER in actbl.h 7061 7062Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h) 7063 7064Removed extraneous reference to NewObj in dsmthdat.c 7065 70662) iASL compiler 7067 7068Fixed a problem introduced in December that disabled the correct disassembly 7069of Resource Templates 7070 7071 7072---------------------------------------- 707303 December 2003. Summary of changes for version 20031203: 7074 70751) ACPI CA Core Subsystem: 7076 7077Changed the initialization of Operation Regions during subsystem 7078init to perform two entire walks of the ACPI namespace; The first 7079to initialize the regions themselves, the second to execute the 7080_REG methods. This fixed some interdependencies across _REG 7081methods found on some machines. 7082 7083Fixed a problem where a Store(Local0, Local1) could simply update 7084the object reference count, and not create a new copy of the 7085object if the Local1 is uninitialized. 7086 7087Implemented support for the _SST reserved method during sleep 7088transitions. 7089 7090Implemented support to clear the SLP_TYP and SLP_EN bits when 7091waking up, this is apparently required by some machines. 7092 7093When sleeping, clear the wake status only if SleepState is not S5. 7094 7095Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect 7096pointer arithmetic advanced a string pointer too far. 7097 7098Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer 7099could be returned if the requested table has not been loaded. 7100 7101Within the support for IRQ resources, restructured the handling of 7102the active and edge/level bits. 7103 7104Fixed a few problems in AcpiPsxExecute() where memory could be 7105leaked under certain error conditions. 7106 7107Improved error messages for the cases where the ACPI mode could 7108not be entered. 7109 7110Code and Data Size: Current and previous core subsystem library 7111sizes are shown below. These are the code and data sizes for the 7112acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 7113these values do not include any ACPI driver or OSPM code. The 7114debug version of the code includes the debug output trace 7115mechanism and has a much larger code and data size. Note that 7116these values will vary depending on the efficiency of the compiler 7117and the compiler options used during generation. 7118 7119 Previous Release (20031029): 7120 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 7121 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 7122 Current Release: 7123 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 7124 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 7125 71262) iASL Compiler/Disassembler: 7127 7128Implemented a fix for the iASL disassembler where a bad index was 7129generated. This was most noticeable on 64-bit platforms 7130 7131 7132---------------------------------------- 713329 October 2003. Summary of changes for version 20031029: 7134 71351) ACPI CA Core Subsystem: 7136 7137 7138Fixed a problem where a level-triggered GPE with an associated 7139_Lxx control method was incorrectly cleared twice. 7140 7141Fixed a problem with the Field support code where an access can 7142occur beyond the end-of-region if the field is non-aligned but 7143extends to the very end of the parent region (resulted in an 7144AE_AML_REGION_LIMIT exception.) 7145 7146Fixed a problem with ACPI Fixed Events where an RT Clock handler 7147would not get invoked on an RTC event. The RTC event bitmasks for 7148the PM1 registers were not being initialized properly. 7149 7150Implemented support for executing _STA and _INI methods for 7151Processor objects. Although this is currently not part of the 7152ACPI specification, there is existing ASL code that depends on the 7153init-time execution of these methods. 7154 7155Implemented and deployed a GetDescriptorName function to decode 7156the various types of internal descriptors. Guards against null 7157descriptors during debug output also. 7158 7159Implemented and deployed a GetNodeName function to extract the 4- 7160character namespace node name. This function simplifies the debug 7161and error output, as well as guarding against null pointers during 7162output. 7163 7164Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to 7165simplify the debug and error output of 64-bit integers. This 7166macro replaces the HIDWORD and LODWORD macros for dumping these 7167integers. 7168 7169Updated the implementation of the Stall() operator to only call 7170AcpiOsStall(), and also return an error if the operand is larger 7171than 255. This preserves the required behavior of not 7172relinquishing the processor, as would happen if AcpiOsSleep() was 7173called for "long stalls". 7174 7175Constructs of the form "Store(LocalX,LocalX)" where LocalX is not 7176initialized are now treated as NOOPs. 7177 7178Cleaned up a handful of warnings during 64-bit generation. 7179 7180Fixed a reported error where and incorrect GPE number was passed 7181to the GPE dispatch handler. This value is only used for error 7182output, however. Used this opportunity to clean up and streamline 7183the GPE dispatch code. 7184 7185Code and Data Size: Current and previous core subsystem library 7186sizes are shown below. These are the code and data sizes for the 7187acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 7188these values do not include any ACPI driver or OSPM code. The 7189 7190debug version of the code includes the debug output trace 7191mechanism and has a much larger code and data size. Note that 7192these values will vary depending on the efficiency of the compiler 7193and the compiler options used during generation. 7194 7195 Previous Release (20031002): 7196 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 7197 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 7198 Current Release: 7199 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 7200 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 7201 7202 72032) iASL Compiler/Disassembler: 7204 7205Updated the iASL compiler to return an error if the operand to the 7206Stall() operator is larger than 255. 7207 7208 7209---------------------------------------- 721002 October 2003. Summary of changes for version 20031002: 7211 7212 72131) ACPI CA Core Subsystem: 7214 7215Fixed a problem with Index Fields where the index was not 7216incremented for fields that require multiple writes to the 7217index/data registers (Fields that are wider than the data 7218register.) 7219 7220Fixed a problem with all Field objects where a write could go 7221beyond the end-of-field if the field was larger than the access 7222granularity and therefore required multiple writes to complete the 7223request. An extra write beyond the end of the field could happen 7224inadvertently. 7225 7226Fixed a problem with Index Fields where a BUFFER_OVERFLOW error 7227would incorrectly be returned if the width of the Data Register 7228was larger than the specified field access width. 7229 7230Completed fixes for LoadTable() and Unload() and verified their 7231operation. Implemented full support for the "DdbHandle" object 7232throughout the ACPI CA subsystem. 7233 7234Implemented full support for the MADT and ECDT tables in the ACPI 7235CA header files. Even though these tables are not directly 7236consumed by ACPI CA, the header definitions are useful for ACPI 7237device drivers. 7238 7239Integrated resource descriptor fixes posted to the Linux ACPI 7240list. This included checks for minimum descriptor length, and 7241support for trailing NULL strings within descriptors that have 7242optional string elements. 7243 7244Code and Data Size: Current and previous core subsystem library 7245sizes are shown below. These are the code and data sizes for the 7246acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 7247these values do not include any ACPI driver or OSPM code. The 7248debug version of the code includes the debug output trace 7249mechanism and has a much larger code and data size. Note that 7250these values will vary depending on the efficiency of the compiler 7251and the compiler options used during generation. 7252 7253 Previous Release (20030918): 7254 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 7255 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 7256 Current Release: 7257 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 7258 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 7259 7260 72612) iASL Compiler: 7262 7263Implemented detection of non-ASCII characters within the input 7264source ASL file. This catches attempts to compile binary (AML) 7265files early in the compile, with an informative error message. 7266 7267Fixed a problem where the disassembler would fault if the output 7268filename could not be generated or if the output file could not be 7269opened. 7270 7271---------------------------------------- 727218 September 2003. Summary of changes for version 20030918: 7273 7274 72751) ACPI CA Core Subsystem: 7276 7277Found and fixed a longstanding problem with the late execution of 7278the various deferred AML opcodes (such as Operation Regions, 7279Buffer Fields, Buffers, and Packages). If the name string 7280specified for the name of the new object placed the object in a 7281scope other than the current scope, the initialization/execution 7282of the opcode failed. The solution to this problem was to 7283implement a mechanism where the late execution of such opcodes 7284does not attempt to lookup/create the name a second time in an 7285incorrect scope. This fixes the "region size computed 7286incorrectly" problem. 7287 7288Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a 7289Global Lock AE_BAD_PARAMETER error. 7290 7291Fixed several 64-bit issues with prototypes, casting and data 7292types. 7293 7294Removed duplicate prototype from acdisasm.h 7295 7296Fixed an issue involving EC Operation Region Detach (Shaohua Li) 7297 7298Code and Data Size: Current and previous core subsystem library 7299sizes are shown below. These are the code and data sizes for the 7300acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 7301these values do not include any ACPI driver or OSPM code. The 7302debug version of the code includes the debug output trace 7303mechanism and has a much larger code and data size. Note that 7304these values will vary depending on the efficiency of the compiler 7305and the compiler options used during generation. 7306 7307 Previous Release: 7308 7309 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 7310 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 7311 Current Release: 7312 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 7313 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 7314 7315 73162) Linux: 7317 7318Fixed the AcpiOsSleep implementation in osunixxf.c to pass the 7319correct sleep time in seconds. 7320 7321---------------------------------------- 732214 July 2003. Summary of changes for version 20030619: 7323 73241) ACPI CA Core Subsystem: 7325 7326Parse SSDTs in order discovered, as opposed to reverse order 7327(Hrvoje Habjanic) 7328 7329Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas 7330Klausner, 7331 Nate Lawson) 7332 7333 73342) Linux: 7335 7336Dynamically allocate SDT list (suggested by Andi Kleen) 7337 7338proc function return value cleanups (Andi Kleen) 7339 7340Correctly handle NMI watchdog during long stalls (Andrew Morton) 7341 7342Make it so acpismp=force works (reported by Andrew Morton) 7343 7344 7345---------------------------------------- 734619 June 2003. Summary of changes for version 20030619: 7347 73481) ACPI CA Core Subsystem: 7349 7350Fix To/FromBCD, eliminating the need for an arch-specific #define. 7351 7352Do not acquire a semaphore in the S5 shutdown path. 7353 7354Fix ex_digits_needed for 0. (Takayoshi Kochi) 7355 7356Fix sleep/stall code reversal. (Andi Kleen) 7357 7358Revert a change having to do with control method calling 7359semantics. 7360 73612) Linux: 7362 7363acpiphp update (Takayoshi Kochi) 7364 7365Export acpi_disabled for sonypi (Stelian Pop) 7366 7367Mention acpismp=force in config help 7368 7369Re-add acpitable.c and acpismp=force. This improves backwards 7370 7371compatibility and also cleans up the code to a significant degree. 7372 7373Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge) 7374 7375---------------------------------------- 737622 May 2003. Summary of changes for version 20030522: 7377 73781) ACPI CA Core Subsystem: 7379 7380Found and fixed a reported problem where an AE_NOT_FOUND error 7381occurred occasionally during _BST evaluation. This turned out to 7382be an Owner ID allocation issue where a called method did not get 7383a new ID assigned to it. Eventually, (after 64k calls), the Owner 7384ID UINT16 would wraparound so that the ID would be the same as the 7385caller's and the called method would delete the caller's 7386namespace. 7387 7388Implemented extended error reporting for control methods that are 7389aborted due to a run-time exception. Output includes the exact 7390AML instruction that caused the method abort, a dump of the method 7391locals and arguments at the time of the abort, and a trace of all 7392nested control method calls. 7393 7394Modified the interpreter to allow the creation of buffers of zero 7395length from the AML code. Implemented new code to ensure that no 7396attempt is made to actually allocate a memory buffer (of length 7397zero) - instead, a simple buffer object with a NULL buffer pointer 7398and length zero is created. A warning is no longer issued when 7399the AML attempts to create a zero-length buffer. 7400 7401Implemented a workaround for the "leading asterisk issue" in 7402_HIDs, _UIDs, and _CIDs in the AML interpreter. One leading 7403asterisk is automatically removed if present in any HID, UID, or 7404CID strings. The iASL compiler will still flag this asterisk as 7405an error, however. 7406 7407Implemented full support for _CID methods that return a package of 7408multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface 7409now additionally returns a device _CID list if present. This 7410required a change to the external interface in order to pass an 7411ACPI_BUFFER object as a parameter since the _CID list is of 7412variable length. 7413 7414Fixed a problem with the new AE_SAME_HANDLER exception where 7415handler initialization code did not know about this exception. 7416 7417Code and Data Size: Current and previous core subsystem library 7418sizes are shown below. These are the code and data sizes for the 7419acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 7420these values do not include any ACPI driver or OSPM code. The 7421debug version of the code includes the debug output trace 7422mechanism and has a much larger code and data size. Note that 7423these values will vary depending on the efficiency of the compiler 7424and the compiler options used during generation. 7425 7426 Previous Release (20030509): 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 Current Release: 7430 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 7431 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 7432 7433 74342) Linux: 7435 7436Fixed a bug in which we would reinitialize the ACPI interrupt 7437after it was already working, thus disabling all ACPI and the IRQs 7438for any other device sharing the interrupt. (Thanks to Stian 7439Jordet) 7440 7441Toshiba driver update (John Belmonte) 7442 7443Return only 0 or 1 for our interrupt handler status (Andrew 7444Morton) 7445 7446 74473) iASL Compiler: 7448 7449Fixed a reported problem where multiple (nested) ElseIf() 7450statements were not handled correctly by the compiler, resulting 7451in incorrect warnings and incorrect AML code. This was a problem 7452in both the ASL parser and the code generator. 7453 7454 74554) Documentation: 7456 7457Added changes to existing interfaces, new exception codes, and new 7458text concerning reference count object management versus garbage 7459collection. 7460 7461---------------------------------------- 746209 May 2003. Summary of changes for version 20030509. 7463 7464 74651) ACPI CA Core Subsystem: 7466 7467Changed the subsystem initialization sequence to hold off 7468installation of address space handlers until the hardware has been 7469initialized and the system has entered ACPI mode. This is because 7470the installation of space handlers can cause _REG methods to be 7471run. Previously, the _REG methods could potentially be run before 7472ACPI mode was enabled. 7473 7474Fixed some memory leak issues related to address space handler and 7475notify handler installation. There were some problems with the 7476reference count mechanism caused by the fact that the handler 7477objects are shared across several namespace objects. 7478 7479Fixed a reported problem where reference counts within the 7480namespace were not properly updated when named objects created by 7481method execution were deleted. 7482 7483Fixed a reported problem where multiple SSDTs caused a deletion 7484issue during subsystem termination. Restructured the table data 7485structures to simplify the linked lists and the related code. 7486 7487Fixed a problem where the table ID associated with secondary 7488tables (SSDTs) was not being propagated into the namespace objects 7489created by those tables. This would only present a problem for 7490tables that are unloaded at run-time, however. 7491 7492Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE 7493type as the length parameter (instead of UINT32). 7494 7495Solved a long-standing problem where an ALREADY_EXISTS error 7496appears on various systems. This problem could happen when there 7497are multiple PCI_Config operation regions under a single PCI root 7498bus. This doesn't happen very frequently, but there are some 7499systems that do this in the ASL. 7500 7501Fixed a reported problem where the internal DeleteNode function 7502was incorrectly handling the case where a namespace node was the 7503first in the parent's child list, and had additional peers (not 7504the only child, but first in the list of children.) 7505 7506Code and Data Size: Current core subsystem library sizes are shown 7507below. These are the code and data sizes for the acpica.lib 7508produced by the Microsoft Visual C++ 6.0 compiler, and these 7509values do not include any ACPI driver or OSPM code. The debug 7510version of the code includes the debug output trace mechanism and 7511has a much larger code and data size. Note that these values will 7512vary depending on the efficiency of the compiler and the compiler 7513options used during generation. 7514 7515 Previous Release 7516 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 7517 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 7518 Current Release: 7519 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 7520 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 7521 7522 75232) Linux: 7524 7525Allow ":" in OS override string (Ducrot Bruno) 7526 7527Kobject fix (Greg KH) 7528 7529 75303 iASL Compiler/Disassembler: 7531 7532Fixed a problem in the generation of the C source code files (AML 7533is emitted in C source statements for BIOS inclusion) where the 7534Ascii dump that appears within a C comment at the end of each line 7535could cause a compile time error if the AML sequence happens to 7536have an open comment or close comment sequence embedded. 7537 7538 7539---------------------------------------- 754024 April 2003. Summary of changes for version 20030424. 7541 7542 75431) ACPI CA Core Subsystem: 7544 7545Support for big-endian systems has been implemented. Most of the 7546support has been invisibly added behind big-endian versions of the 7547ACPI_MOVE_* macros. 7548 7549Fixed a problem in AcpiHwDisableGpeBlock() and 7550AcpiHwClearGpeBlock() where an incorrect offset was passed to the 7551low level hardware write routine. The offset parameter was 7552actually eliminated from the low level read/write routines because 7553they had become obsolete. 7554 7555Fixed a problem where a handler object was deleted twice during 7556the removal of a fixed event handler. 7557 7558 75592) Linux: 7560 7561A fix for SMP systems with link devices was contributed by 7562 7563Compaq's Dan Zink. 7564 7565(2.5) Return whether we handled the interrupt in our IRQ handler. 7566(Linux ISRs no longer return void, so we can propagate the handler 7567return value from the ACPI CA core back to the OS.) 7568 7569 7570 75713) Documentation: 7572 7573The ACPI CA Programmer Reference has been updated to reflect new 7574interfaces and changes to existing interfaces. 7575 7576---------------------------------------- 757728 March 2003. Summary of changes for version 20030328. 7578 75791) ACPI CA Core Subsystem: 7580 7581The GPE Block Device support has been completed. New interfaces 7582are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event 7583interfaces (enable, disable, clear, getstatus) have been split 7584into separate interfaces for Fixed Events and General Purpose 7585Events (GPEs) in order to support GPE Block Devices properly. 7586 7587Fixed a problem where the error message "Failed to acquire 7588semaphore" would appear during operations on the embedded 7589controller (EC). 7590 7591Code and Data Size: Current core subsystem library sizes are shown 7592below. These are the code and data sizes for the acpica.lib 7593produced by the Microsoft Visual C++ 6.0 compiler, and these 7594values do not include any ACPI driver or OSPM code. The debug 7595version of the code includes the debug output trace mechanism and 7596has a much larger code and data size. Note that these values will 7597vary depending on the efficiency of the compiler and the compiler 7598options used during generation. 7599 7600 Previous Release 7601 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 7602 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 7603 Current Release: 7604 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 7605 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 7606 7607 7608---------------------------------------- 760928 February 2003. Summary of changes for version 20030228. 7610 7611 76121) ACPI CA Core Subsystem: 7613 7614The GPE handling and dispatch code has been completely overhauled 7615in preparation for support of GPE Block Devices (ID ACPI0006). 7616This affects internal data structures and code only; there should 7617be no differences visible externally. One new file has been 7618added, evgpeblk.c 7619 7620The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only 7621fields that are used to determine the GPE block lengths. The 7622REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address 7623structures are ignored. This is per the ACPI specification but it 7624isn't very clear. The full 256 Block 0/1 GPEs are now supported 7625(the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128). 7626 7627In the SCI interrupt handler, removed the read of the PM1_CONTROL 7628register to look at the SCI_EN bit. On some machines, this read 7629causes an SMI event and greatly slows down SCI events. (This may 7630in fact be the cause of slow battery status response on some 7631systems.) 7632 7633Fixed a problem where a store of a NULL string to a package object 7634could cause the premature deletion of the object. This was seen 7635during execution of the battery _BIF method on some systems, 7636resulting in no battery data being returned. 7637 7638Added AcpiWalkResources interface to simplify parsing of resource 7639lists. 7640 7641Code and Data Size: Current core subsystem library sizes are shown 7642below. These are the code and data sizes for the acpica.lib 7643produced by the Microsoft Visual C++ 6.0 compiler, and these 7644values do not include any ACPI driver or OSPM code. The debug 7645version of the code includes the debug output trace mechanism and 7646has a much larger code and data size. Note that these values will 7647vary depending on the efficiency of the compiler and the compiler 7648options used during generation. 7649 7650 Previous Release 7651 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 7652 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 7653 Current Release: 7654 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 7655 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 7656 7657 76582) Linux 7659 7660S3 fixes (Ole Rohne) 7661 7662Update ACPI PHP driver with to use new acpi_walk_resource API 7663(Bjorn Helgaas) 7664 7665Add S4BIOS support (Pavel Machek) 7666 7667Map in entire table before performing checksum (John Stultz) 7668 7669Expand the mem= cmdline to allow the specification of reserved and 7670ACPI DATA blocks (Pavel Machek) 7671 7672Never use ACPI on VISWS 7673 7674Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez) 7675 7676Revert a change that allowed P_BLK lengths to be 4 or 5. This is 7677causing us to think that some systems support C2 when they really 7678don't. 7679 7680Do not count processor objects for non-present CPUs (Thanks to 7681Dominik Brodowski) 7682 7683 76843) iASL Compiler: 7685 7686Fixed a problem where ASL include files could not be found and 7687opened. 7688 7689Added support for the _PDC reserved name. 7690 7691 7692---------------------------------------- 769322 January 2003. Summary of changes for version 20030122. 7694 7695 76961) ACPI CA Core Subsystem: 7697 7698Added a check for constructs of the form: Store (Local0, Local0) 7699where Local0 is not initialized. Apparently, some BIOS 7700programmers believe that this is a NOOP. Since this store doesn't 7701do anything anyway, the new prototype behavior will ignore this 7702error. This is a case where we can relax the strict checking in 7703the interpreter in the name of compatibility. 7704 7705 77062) Linux 7707 7708The AcpiSrc Source Conversion Utility has been released with the 7709Linux package for the first time. This is the utility that is 7710used to convert the ACPI CA base source code to the Linux version. 7711 7712(Both) Handle P_BLK lengths shorter than 6 more gracefully 7713 7714(Both) Move more headers to include/acpi, and delete an unused 7715header. 7716 7717(Both) Move drivers/acpi/include directory to include/acpi 7718 7719(Both) Boot functions don't use cmdline, so don't pass it around 7720 7721(Both) Remove include of unused header (Adrian Bunk) 7722 7723(Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since 7724the 7725former now also includes the latter, acpiphp.h only needs the one, 7726now. 7727 7728(2.5) Make it possible to select method of bios restoring after S3 7729resume. [=> no more ugly ifdefs] (Pavel Machek) 7730 7731(2.5) Make proc write interfaces work (Pavel Machek) 7732 7733(2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski) 7734 7735(2.5) Break out ACPI Perf code into its own module, under cpufreq 7736(Dominik Brodowski) 7737 7738(2.4) S4BIOS support (Ducrot Bruno) 7739 7740(2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio 7741Visinoni) 7742 7743 77443) iASL Compiler: 7745 7746Added support to disassemble SSDT and PSDTs. 7747 7748Implemented support to obtain SSDTs from the Windows registry if 7749available. 7750 7751 7752---------------------------------------- 775309 January 2003. Summary of changes for version 20030109. 7754 77551) ACPI CA Core Subsystem: 7756 7757Changed the behavior of the internal Buffer-to-String conversion 7758function. The current ACPI specification states that the contents 7759of the buffer are "converted to a string of two-character 7760hexadecimal numbers, each separated by a space". Unfortunately, 7761this definition is not backwards compatible with existing ACPI 1.0 7762implementations (although the behavior was not defined in the ACPI 77631.0 specification). The new behavior simply copies data from the 7764buffer to the string until a null character is found or the end of 7765the buffer is reached. The new String object is always null 7766terminated. This problem was seen during the generation of _BIF 7767battery data where incorrect strings were returned for battery 7768type, etc. This will also require an errata to the ACPI 7769specification. 7770 7771Renamed all instances of NATIVE_UINT and NATIVE_INT to 7772ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively. 7773 7774Copyright in all module headers (both Linux and non-Linux) has be 7775updated to 2003. 7776 7777Code and Data Size: Current core subsystem library sizes are shown 7778below. These are the code and data sizes for the acpica.lib 7779produced by the Microsoft Visual C++ 6.0 compiler, and these 7780values do not include any ACPI driver or OSPM code. The debug 7781version of the code includes the debug output trace mechanism and 7782has a much larger code and data size. Note that these values will 7783vary depending on the efficiency of the compiler and the compiler 7784options used during generation. 7785 7786 Previous Release 7787 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 7788 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 7789 Current Release: 7790 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 7791 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 7792 7793 77942) Linux 7795 7796Fixed an oops on module insertion/removal (Matthew Tippett) 7797 7798(2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante) 7799 7800(2.5) Replace pr_debug (Randy Dunlap) 7801 7802(2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski) 7803 7804(Both) Eliminate spawning of thread from timer callback, in favor 7805of schedule_work() 7806 7807(Both) Show Lid status in /proc (Zdenek OGAR Skalak) 7808 7809(Both) Added define for Fixed Function HW region (Matthew Wilcox) 7810 7811(Both) Add missing statics to button.c (Pavel Machek) 7812 7813Several changes have been made to the source code translation 7814utility that generates the Linux Code in order to make the code 7815more "Linux-like": 7816 7817All typedefs on structs and unions have been removed in keeping 7818with the Linux coding style. 7819 7820Removed the non-Linux SourceSafe module revision number from each 7821module header. 7822 7823Completed major overhaul of symbols to be lowercased for linux. 7824Doubled the number of symbols that are lowercased. 7825 7826Fixed a problem where identifiers within procedure headers and 7827within quotes were not fully lower cased (they were left with a 7828starting capital.) 7829 7830Some C macros whose only purpose is to allow the generation of 16- 7831bit code are now completely removed in the Linux code, increasing 7832readability and maintainability. 7833 7834---------------------------------------- 7835 783612 December 2002. Summary of changes for version 20021212. 7837 7838 78391) ACPI CA Core Subsystem: 7840 7841Fixed a problem where the creation of a zero-length AML Buffer 7842would cause a fault. 7843 7844Fixed a problem where a Buffer object that pointed to a static AML 7845buffer (in an ACPI table) could inadvertently be deleted, causing 7846memory corruption. 7847 7848Fixed a problem where a user buffer (passed in to the external 7849ACPI CA interfaces) could be overwritten if the buffer was too 7850small to complete the operation, causing memory corruption. 7851 7852Fixed a problem in the Buffer-to-String conversion code where a 7853string of length one was always returned, regardless of the size 7854of the input Buffer object. 7855 7856Removed the NATIVE_CHAR data type across the entire source due to 7857lack of need and lack of consistent use. 7858 7859Code and Data Size: Current core subsystem library sizes are shown 7860below. These are the code and data sizes for the acpica.lib 7861produced by the Microsoft Visual C++ 6.0 compiler, and these 7862values do not include any ACPI driver or OSPM code. The debug 7863version of the code includes the debug output trace mechanism and 7864has a much larger code and data size. Note that these values will 7865vary depending on the efficiency of the compiler and the compiler 7866options used during generation. 7867 7868 Previous Release 7869 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 7870 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 7871 Current Release: 7872 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 7873 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 7874 7875 7876---------------------------------------- 787705 December 2002. Summary of changes for version 20021205. 7878 78791) ACPI CA Core Subsystem: 7880 7881Fixed a problem where a store to a String or Buffer object could 7882cause corruption of the DSDT if the object type being stored was 7883the same as the target object type and the length of the object 7884being stored was equal to or smaller than the original (existing) 7885target object. This was seen to cause corruption of battery _BIF 7886buffers if the _BIF method modified the buffer on the fly. 7887 7888Fixed a problem where an internal error was generated if a control 7889method invocation was used in an OperationRegion, Buffer, or 7890Package declaration. This was caused by the deferred parsing of 7891the control method and thus the deferred creation of the internal 7892method object. The solution to this problem was to create the 7893internal method object at the moment the method is encountered in 7894the first pass - so that subsequent references to the method will 7895able to obtain the required parameter count and thus properly 7896parse the method invocation. This problem presented itself as an 7897AE_AML_INTERNAL during the pass 1 parse phase during table load. 7898 7899Fixed a problem where the internal String object copy routine did 7900not always allocate sufficient memory for the target String object 7901and caused memory corruption. This problem was seen to cause 7902"Allocation already present in list!" errors as memory allocation 7903became corrupted. 7904 7905Implemented a new function for the evaluation of namespace objects 7906that allows the specification of the allowable return object 7907types. This simplifies a lot of code that checks for a return 7908object of one or more specific objects returned from the 7909evaluation (such as _STA, etc.) This may become and external 7910function if it would be useful to ACPI-related drivers. 7911 7912Completed another round of prefixing #defines with "ACPI_" for 7913clarity. 7914 7915Completed additional code restructuring to allow more modular 7916linking for iASL compiler and AcpiExec. Several files were split 7917creating new files. New files: nsparse.c dsinit.c evgpe.c 7918 7919Implemented an abort mechanism to terminate an executing control 7920method via the AML debugger. This feature is useful for debugging 7921control methods that depend (wait) for specific hardware 7922responses. 7923 7924Code and Data Size: Current core subsystem library sizes are shown 7925below. These are the code and data sizes for the acpica.lib 7926produced by the Microsoft Visual C++ 6.0 compiler, and these 7927values do not include any ACPI driver or OSPM code. The debug 7928version of the code includes the debug output trace mechanism and 7929has a much larger code and data size. Note that these values will 7930vary depending on the efficiency of the compiler and the compiler 7931options used during generation. 7932 7933 Previous Release 7934 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 7935 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 7936 Current Release: 7937 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 7938 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 7939 7940 79412) iASL Compiler/Disassembler 7942 7943Fixed a compiler code generation problem for "Interrupt" Resource 7944Descriptors. If specified in the ASL, the optional "Resource 7945Source Index" and "Resource Source" fields were not inserted into 7946the correct location within the AML resource descriptor, creating 7947an invalid descriptor. 7948 7949Fixed a disassembler problem for "Interrupt" resource descriptors. 7950The optional "Resource Source Index" and "Resource Source" fields 7951were ignored. 7952 7953 7954---------------------------------------- 795522 November 2002. Summary of changes for version 20021122. 7956 7957 79581) ACPI CA Core Subsystem: 7959 7960Fixed a reported problem where an object stored to a Method Local 7961or Arg was not copied to a new object during the store - the 7962object pointer was simply copied to the Local/Arg. This caused 7963all subsequent operations on the Local/Arg to also affect the 7964original source of the store operation. 7965 7966Fixed a problem where a store operation to a Method Local or Arg 7967was not completed properly if the Local/Arg contained a reference 7968(from RefOf) to a named field. The general-purpose store-to- 7969namespace-node code is now used so that this case is handled 7970automatically. 7971 7972Fixed a problem where the internal object copy routine would cause 7973a protection fault if the object being copied was a Package and 7974contained either 1) a NULL package element or 2) a nested sub- 7975package. 7976 7977Fixed a problem with the GPE initialization that resulted from an 7978ambiguity in the ACPI specification. One section of the 7979specification states that both the address and length of the GPE 7980block must be zero if the block is not supported. Another section 7981implies that only the address need be zero if the block is not 7982supported. The code has been changed so that both the address and 7983the length must be non-zero to indicate a valid GPE block (i.e., 7984if either the address or the length is zero, the GPE block is 7985invalid.) 7986 7987Code and Data Size: Current core subsystem library sizes are shown 7988below. These are the code and data sizes for the acpica.lib 7989produced by the Microsoft Visual C++ 6.0 compiler, and these 7990values do not include any ACPI driver or OSPM code. The debug 7991version of the code includes the debug output trace mechanism and 7992has a much larger code and data size. Note that these values will 7993vary depending on the efficiency of the compiler and the compiler 7994options used during generation. 7995 7996 Previous Release 7997 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 7998 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 7999 Current Release: 8000 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 8001 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 8002 8003 80042) Linux 8005 8006Cleaned up EC driver. Exported an external EC read/write 8007interface. By going through this, other drivers (most notably 8008sonypi) will be able to serialize access to the EC. 8009 8010 80113) iASL Compiler/Disassembler 8012 8013Implemented support to optionally generate include files for both 8014ASM and C (the -i switch). This simplifies BIOS development by 8015automatically creating include files that contain external 8016declarations for the symbols that are created within the 8017 8018(optionally generated) ASM and C AML source files. 8019 8020 8021---------------------------------------- 802215 November 2002. Summary of changes for version 20021115. 8023 80241) ACPI CA Core Subsystem: 8025 8026Fixed a memory leak problem where an error during resolution of 8027 8028method arguments during a method invocation from another method 8029failed to cleanup properly by deleting all successfully resolved 8030argument objects. 8031 8032Fixed a problem where the target of the Index() operator was not 8033correctly constructed if the source object was a package. This 8034problem has not been detected because the use of a target operand 8035with Index() is very rare. 8036 8037Fixed a problem with the Index() operator where an attempt was 8038made to delete the operand objects twice. 8039 8040Fixed a problem where an attempt was made to delete an operand 8041twice during execution of the CondRefOf() operator if the target 8042did not exist. 8043 8044Implemented the first of perhaps several internal create object 8045functions that create and initialize a specific object type. This 8046consolidates duplicated code wherever the object is created, thus 8047shrinking the size of the subsystem. 8048 8049Implemented improved debug/error messages for errors that occur 8050during nested method invocations. All executing method pathnames 8051are displayed (with the error) as the call stack is unwound - thus 8052simplifying debug. 8053 8054Fixed a problem introduced in the 10/02 release that caused 8055premature deletion of a buffer object if a buffer was used as an 8056ASL operand where an integer operand is required (Thus causing an 8057implicit object conversion from Buffer to Integer.) The change in 8058the 10/02 release was attempting to fix a memory leak (albeit 8059incorrectly.) 8060 8061Code and Data Size: Current core subsystem library sizes are shown 8062below. These are the code and data sizes for the acpica.lib 8063produced by the Microsoft Visual C++ 6.0 compiler, and these 8064values do not include any ACPI driver or OSPM code. The debug 8065version of the code includes the debug output trace mechanism and 8066has a much larger code and data size. Note that these values will 8067vary depending on the efficiency of the compiler and the compiler 8068options used during generation. 8069 8070 Previous Release 8071 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 8072 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 8073 Current Release: 8074 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 8075 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 8076 8077 80782) Linux 8079 8080Changed the implementation of the ACPI semaphores to use down() 8081instead of down_interruptable(). It is important that the 8082execution of ACPI control methods not be interrupted by signals. 8083Methods must run to completion, or the system may be left in an 8084unknown/unstable state. 8085 8086Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set. 8087(Shawn Starr) 8088 8089 80903) iASL Compiler/Disassembler 8091 8092 8093Changed the default location of output files. All output files 8094are now placed in the current directory by default instead of in 8095the directory of the source file. This change may affect some 8096existing makefiles, but it brings the behavior of the compiler in 8097line with other similar tools. The location of the output files 8098can be overridden with the -p command line switch. 8099 8100 8101---------------------------------------- 810211 November 2002. Summary of changes for version 20021111. 8103 8104 81050) ACPI Specification 2.0B is released and is now available at: 8106http://www.acpi.info/index.html 8107 8108 81091) ACPI CA Core Subsystem: 8110 8111Implemented support for the ACPI 2.0 SMBus Operation Regions. 8112This includes the early detection and handoff of the request to 8113the SMBus region handler (avoiding all of the complex field 8114support code), and support for the bidirectional return packet 8115from an SMBus write operation. This paves the way for the 8116development of SMBus drivers in each host operating system. 8117 8118Fixed a problem where the semaphore WAIT_FOREVER constant was 8119defined as 32 bits, but must be 16 bits according to the ACPI 8120specification. This had the side effect of causing ASL 8121Mutex/Event timeouts even though the ASL code requested a wait 8122forever. Changed all internal references to the ACPI timeout 8123parameter to 16 bits to prevent future problems. Changed the name 8124of WAIT_FOREVER to ACPI_WAIT_FOREVER. 8125 8126Code and Data Size: Current core subsystem library sizes are shown 8127below. These are the code and data sizes for the acpica.lib 8128produced by the Microsoft Visual C++ 6.0 compiler, and these 8129values do not include any ACPI driver or OSPM code. The debug 8130version of the code includes the debug output trace mechanism and 8131has a much larger code and data size. Note that these values will 8132vary depending on the efficiency of the compiler and the compiler 8133options used during generation. 8134 8135 Previous Release 8136 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 8137 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 8138 Current Release: 8139 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 8140 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 8141 8142 81432) Linux 8144 8145Module loading/unloading fixes (John Cagle) 8146 8147 81483) iASL Compiler/Disassembler 8149 8150Added support for the SMBBlockProcessCall keyword (ACPI 2.0) 8151 8152Implemented support for the disassembly of all SMBus protocol 8153keywords (SMBQuick, SMBWord, etc.) 8154 8155---------------------------------------- 815601 November 2002. Summary of changes for version 20021101. 8157 8158 81591) ACPI CA Core Subsystem: 8160 8161Fixed a problem where platforms that have a GPE1 block but no GPE0 8162block were not handled correctly. This resulted in a "GPE 8163overlap" error message. GPE0 is no longer required. 8164 8165Removed code added in the previous release that inserted nodes 8166into the namespace in alphabetical order. This caused some side- 8167effects on various machines. The root cause of the problem is 8168still under investigation since in theory, the internal ordering 8169of the namespace nodes should not matter. 8170 8171 8172Enhanced error reporting for the case where a named object is not 8173found during control method execution. The full ACPI namepath 8174(name reference) of the object that was not found is displayed in 8175this case. 8176 8177Note: as a result of the overhaul of the namespace object types in 8178the previous release, the namespace nodes for the predefined 8179scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE 8180instead of ACPI_TYPE_ANY. This simplifies the namespace 8181management code but may affect code that walks the namespace tree 8182looking for specific object types. 8183 8184Code and Data Size: Current core subsystem library sizes are shown 8185below. These are the code and data sizes for the acpica.lib 8186produced by the Microsoft Visual C++ 6.0 compiler, and these 8187values do not include any ACPI driver or OSPM code. The debug 8188version of the code includes the debug output trace mechanism and 8189has a much larger code and data size. Note that these values will 8190vary depending on the efficiency of the compiler and the compiler 8191options used during generation. 8192 8193 Previous Release 8194 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 8195 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 8196 Current Release: 8197 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 8198 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 8199 8200 82012) Linux 8202 8203Fixed a problem introduced in the previous release where the 8204Processor and Thermal objects were not recognized and installed in 8205/proc. This was related to the scope type change described above. 8206 8207 82083) iASL Compiler/Disassembler 8209 8210Implemented the -g option to get all of the required ACPI tables 8211from the registry and save them to files (Windows version of the 8212compiler only.) The required tables are the FADT, FACS, and DSDT. 8213 8214Added ACPI table checksum validation during table disassembly in 8215order to catch corrupted tables. 8216 8217 8218---------------------------------------- 821922 October 2002. Summary of changes for version 20021022. 8220 82211) ACPI CA Core Subsystem: 8222 8223Implemented a restriction on the Scope operator that the target 8224must already exist in the namespace at the time the operator is 8225encountered (during table load or method execution). In other 8226words, forward references are not allowed and Scope() cannot 8227create a new object. This changes the previous behavior where the 8228interpreter would create the name if not found. This new behavior 8229correctly enables the search-to-root algorithm during namespace 8230lookup of the target name. Because of this upsearch, this fixes 8231the known Compaq _SB_.OKEC problem and makes both the AML 8232interpreter and iASL compiler compatible with other ACPI 8233implementations. 8234 8235Completed a major overhaul of the internal ACPI object types for 8236the ACPI Namespace and the associated operand objects. Many of 8237these types had become obsolete with the introduction of the two- 8238pass namespace load. This cleanup simplifies the code and makes 8239the entire namespace load mechanism much clearer and easier to 8240understand. 8241 8242Improved debug output for tracking scope opening/closing to help 8243diagnose scoping issues. The old scope name as well as the new 8244scope name are displayed. Also improved error messages for 8245problems with ASL Mutex objects and error messages for GPE 8246problems. 8247 8248Cleaned up the namespace dump code, removed obsolete code. 8249 8250All string output (for all namespace/object dumps) now uses the 8251common ACPI string output procedure which handles escapes properly 8252and does not emit non-printable characters. 8253 8254Fixed some issues with constants in the 64-bit version of the 8255local C library (utclib.c) 8256 8257 82582) Linux 8259 8260EC Driver: No longer attempts to acquire the Global Lock at 8261interrupt level. 8262 8263 82643) iASL Compiler/Disassembler 8265 8266Implemented ACPI 2.0B grammar change that disallows all Type 1 and 82672 opcodes outside of a control method. This means that the 8268"executable" operators (versus the "namespace" operators) cannot 8269be used at the table level; they can only be used within a control 8270method. 8271 8272Implemented the restriction on the Scope() operator where the 8273target must already exist in the namespace at the time the 8274operator is encountered (during ASL compilation). In other words, 8275forward references are not allowed and Scope() cannot create a new 8276object. This makes the iASL compiler compatible with other ACPI 8277implementations and makes the Scope() implementation adhere to the 8278ACPI specification. 8279 8280Fixed a problem where namepath optimization for the Alias operator 8281was optimizing the wrong path (of the two namepaths.) This caused 8282a "Missing alias link" error message. 8283 8284Fixed a problem where an "unknown reserved name" warning could be 8285incorrectly generated for names like "_SB" when the trailing 8286underscore is not used in the original ASL. 8287 8288Fixed a problem where the reserved name check did not handle 8289NamePaths with multiple NameSegs correctly. The first nameseg of 8290the NamePath was examined instead of the last NameSeg. 8291 8292 8293---------------------------------------- 8294 829502 October 2002. Summary of changes for this release. 8296 8297 82981) ACPI CA Core Subsystem version 20021002: 8299 8300Fixed a problem where a store/copy of a string to an existing 8301string did not always set the string length properly in the String 8302object. 8303 8304Fixed a reported problem with the ToString operator where the 8305behavior was identical to the ToHexString operator instead of just 8306simply converting a raw buffer to a string data type. 8307 8308Fixed a problem where CopyObject and the other "explicit" 8309conversion operators were not updating the internal namespace node 8310type as part of the store operation. 8311 8312Fixed a memory leak during implicit source operand conversion 8313where the original object was not deleted if it was converted to a 8314new object of a different type. 8315 8316Enhanced error messages for all problems associated with namespace 8317lookups. Common procedure generates and prints the lookup name as 8318well as the formatted status. 8319 8320Completed implementation of a new design for the Alias support 8321within the namespace. The existing design did not handle the case 8322where a new object was assigned to one of the two names due to the 8323use of an explicit conversion operator, resulting in the two names 8324pointing to two different objects. The new design simply points 8325the Alias name to the original name node - not to the object. 8326This results in a level of indirection that must be handled in the 8327name resolution mechanism. 8328 8329Code and Data Size: Current core subsystem library sizes are shown 8330below. These are the code and data sizes for the acpica.lib 8331produced by the Microsoft Visual C++ 6.0 compiler, and these 8332values do not include any ACPI driver or OSPM code. The debug 8333version of the code includes the debug output trace mechanism and 8334has a larger code and data size. Note that these values will vary 8335depending on the efficiency of the compiler and the compiler 8336options used during generation. 8337 8338 Previous Release 8339 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 8340 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 8341 Current Release: 8342 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 8343 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 8344 8345 83462) Linux 8347 8348Initialize thermal driver's timer before it is used. (Knut 8349Neumann) 8350 8351Allow handling negative celsius values. (Kochi Takayoshi) 8352 8353Fix thermal management and make trip points. R/W (Pavel Machek) 8354 8355Fix /proc/acpi/sleep. (P. Christeas) 8356 8357IA64 fixes. (David Mosberger) 8358 8359Fix reversed logic in blacklist code. (Sergio Monteiro Basto) 8360 8361Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik 8362Brodowski) 8363 8364 83653) iASL Compiler/Disassembler 8366 8367Clarified some warning/error messages. 8368 8369 8370---------------------------------------- 837118 September 2002. Summary of changes for this release. 8372 8373 83741) ACPI CA Core Subsystem version 20020918: 8375 8376Fixed a reported problem with reference chaining (via the Index() 8377and RefOf() operators) in the ObjectType() and SizeOf() operators. 8378The definition of these operators includes the dereferencing of 8379all chained references to return information on the base object. 8380 8381Fixed a problem with stores to indexed package elements - the 8382existing code would not complete the store if an "implicit 8383conversion" was not performed. In other words, if the existing 8384object (package element) was to be replaced completely, the code 8385didn't handle this case. 8386 8387Relaxed typechecking on the ASL "Scope" operator to allow the 8388target name to refer to an object of type Integer, String, or 8389Buffer, in addition to the scoping object types (Device, 8390predefined Scopes, Processor, PowerResource, and ThermalZone.) 8391This allows existing AML code that has workarounds for a bug in 8392Windows to function properly. A warning is issued, however. This 8393affects both the AML interpreter and the iASL compiler. Below is 8394an example of this type of ASL code: 8395 8396 Name(DEB,0x00) 8397 Scope(DEB) 8398 { 8399 8400Fixed some reported problems with 64-bit integer support in the 8401local implementation of C library functions (clib.c) 8402 8403 84042) Linux 8405 8406Use ACPI fix map region instead of IOAPIC region, since it is 8407undefined in non-SMP. 8408 8409Ensure that the SCI has the proper polarity and trigger, even on 8410systems that do not have an interrupt override entry in the MADT. 8411 84122.5 big driver reorganization (Pat Mochel) 8413 8414Use early table mapping code from acpitable.c (Andi Kleen) 8415 8416New blacklist entries (Andi Kleen) 8417 8418Blacklist improvements. Split blacklist code out into a separate 8419file. Move checking the blacklist to very early. Previously, we 8420would use ACPI tables, and then halfway through init, check the 8421blacklist -- too late. Now, it's early enough to completely fall- 8422back to non-ACPI. 8423 8424 84253) iASL Compiler/Disassembler version 20020918: 8426 8427Fixed a problem where the typechecking code didn't know that an 8428alias could point to a method. In other words, aliases were not 8429being dereferenced during typechecking. 8430 8431 8432---------------------------------------- 843329 August 2002. Summary of changes for this release. 8434 84351) ACPI CA Core Subsystem Version 20020829: 8436 8437If the target of a Scope() operator already exists, it must be an 8438object type that actually opens a scope -- such as a Device, 8439Method, Scope, etc. This is a fatal runtime error. Similar error 8440check has been added to the iASL compiler also. 8441 8442Tightened up the namespace load to disallow multiple names in the 8443same scope. This previously was allowed if both objects were of 8444the same type. (i.e., a lookup was the same as entering a new 8445name). 8446 8447 84482) Linux 8449 8450Ensure that the ACPI interrupt has the proper trigger and 8451polarity. 8452 8453local_irq_disable is extraneous. (Matthew Wilcox) 8454 8455Make "acpi=off" actually do what it says, and not use the ACPI 8456interpreter *or* the tables. 8457 8458Added arch-neutral support for parsing SLIT and SRAT tables (Kochi 8459Takayoshi) 8460 8461 84623) iASL Compiler/Disassembler Version 20020829: 8463 8464Implemented namepath optimization for name declarations. For 8465example, a declaration like "Method (\_SB_.ABCD)" would get 8466optimized to "Method (ABCD)" if the declaration is within the 8467\_SB_ scope. This optimization is in addition to the named 8468reference path optimization first released in the previous 8469version. This would seem to complete all possible optimizations 8470for namepaths within the ASL/AML. 8471 8472If the target of a Scope() operator already exists, it must be an 8473object type that actually opens a scope -- such as a Device, 8474Method, Scope, etc. 8475 8476Implemented a check and warning for unreachable code in the same 8477block below a Return() statement. 8478 8479Fixed a problem where the listing file was not generated if the 8480compiler aborted if the maximum error count was exceeded (200). 8481 8482Fixed a problem where the typechecking of method return values was 8483broken. This includes the check for a return value when the 8484method is invoked as a TermArg (a return value is expected.) 8485 8486Fixed a reported problem where EOF conditions during a quoted 8487string or comment caused a fault. 8488 8489 8490---------------------------------------- 849115 August 2002. Summary of changes for this release. 8492 84931) ACPI CA Core Subsystem Version 20020815: 8494 8495Fixed a reported problem where a Store to a method argument that 8496contains a reference did not perform the indirect store correctly. 8497This problem was created during the conversion to the new 8498reference object model - the indirect store to a method argument 8499code was not updated to reflect the new model. 8500 8501Reworked the ACPI mode change code to better conform to ACPI 2.0, 8502handle corner cases, and improve code legibility (Kochi Takayoshi) 8503 8504Fixed a problem with the pathname parsing for the carat (^) 8505prefix. The heavy use of the carat operator by the new namepath 8506optimization in the iASL compiler uncovered a problem with the AML 8507interpreter handling of this prefix. In the case where one or 8508more carats precede a single nameseg, the nameseg was treated as 8509standalone and the search rule (to root) was inadvertently 8510applied. This could cause both the iASL compiler and the 8511interpreter to find the wrong object or to miss the error that 8512should occur if the object does not exist at that exact pathname. 8513 8514Found and fixed the problem where the HP Pavilion DSDT would not 8515load. This was a relatively minor tweak to the table loading code 8516(a problem caused by the unexpected encounter with a method 8517invocation not within a control method), but it does not solve the 8518overall issue of the execution of AML code at the table level. 8519This investigation is still ongoing. 8520 8521Code and Data Size: Current core subsystem library sizes are shown 8522below. These are the code and data sizes for the acpica.lib 8523produced by the Microsoft Visual C++ 6.0 compiler, and these 8524values do not include any ACPI driver or OSPM code. The debug 8525version of the code includes the debug output trace mechanism and 8526has a larger code and data size. Note that these values will vary 8527depending on the efficiency of the compiler and the compiler 8528options used during generation. 8529 8530 Previous Release 8531 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 8532 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 8533 Current Release: 8534 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 8535 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 8536 8537 85382) Linux 8539 8540Remove redundant slab.h include (Brad Hards) 8541 8542Fix several bugs in thermal.c (Herbert Nachtnebel) 8543 8544Make CONFIG_ACPI_BOOT work properly (Pavel Machek) 8545 8546Change acpi_system_suspend to use updated irq functions (Pavel 8547Machek) 8548 8549Export acpi_get_firmware_table (Matthew Wilcox) 8550 8551Use proper root proc entry for ACPI (Kochi Takayoshi) 8552 8553Fix early-boot table parsing (Bjorn Helgaas) 8554 8555 85563) iASL Compiler/Disassembler 8557 8558Reworked the compiler options to make them more consistent and to 8559use two-letter options where appropriate. We were running out of 8560sensible letters. This may break some makefiles, so check the 8561current options list by invoking the compiler with no parameters. 8562 8563Completed the design and implementation of the ASL namepath 8564optimization option for the compiler. This option optimizes all 8565references to named objects to the shortest possible path. The 8566first attempt tries to utilize a single nameseg (4 characters) and 8567the "search-to-root" algorithm used by the interpreter. If that 8568cannot be used (because either the name is not in the search path 8569or there is a conflict with another object with the same name), 8570the pathname is optimized using the carat prefix (usually a 8571shorter string than specifying the entire path from the root.) 8572 8573Implemented support to obtain the DSDT from the Windows registry 8574(when the disassembly option is specified with no input file). 8575Added this code as the implementation for AcpiOsTableOverride in 8576the Windows OSL. Migrated the 16-bit code (used in the AcpiDump 8577utility) to scan memory for the DSDT to the AcpiOsTableOverride 8578function in the DOS OSL to make the disassembler truly OS 8579independent. 8580 8581Implemented a new option to disassemble and compile in one step. 8582When used without an input filename, this option will grab the 8583DSDT from the local machine, disassemble it, and compile it in one 8584step. 8585 8586Added a warning message for invalid escapes (a backslash followed 8587by any character other than the allowable escapes). This catches 8588the quoted string error "\_SB_" (which should be "\\_SB_" ). 8589 8590Also, there are numerous instances in the ACPI specification where 8591this error occurs. 8592 8593Added a compiler option to disable all optimizations. This is 8594basically the "compatibility mode" because by using this option, 8595the AML code will come out exactly the same as other ASL 8596compilers. 8597 8598Added error messages for incorrectly ordered dependent resource 8599functions. This includes: missing EndDependentFn macro at end of 8600dependent resource list, nested dependent function macros (both 8601start and end), and missing StartDependentFn macro. These are 8602common errors that should be caught at compile time. 8603 8604Implemented _OSI support for the disassembler and compiler. _OSI 8605must be included in the namespace for proper disassembly (because 8606the disassembler must know the number of arguments.) 8607 8608Added an "optimization" message type that is optional (off by 8609default). This message is used for all optimizations - including 8610constant folding, integer optimization, and namepath optimization. 8611 8612---------------------------------------- 861325 July 2002. Summary of changes for this release. 8614 8615 86161) ACPI CA Core Subsystem Version 20020725: 8617 8618The AML Disassembler has been enhanced to produce compilable ASL 8619code and has been integrated into the iASL compiler (see below) as 8620well as the single-step disassembly for the AML debugger and the 8621disassembler for the AcpiDump utility. All ACPI 2.0A opcodes, 8622resource templates and macros are fully supported. The 8623disassembler has been tested on over 30 different AML files, 8624producing identical AML when the resulting disassembled ASL file 8625is recompiled with the same ASL compiler. 8626 8627Modified the Resource Manager to allow zero interrupts and zero 8628dma channels during the GetCurrentResources call. This was 8629causing problems on some platforms. 8630 8631Added the AcpiOsRedirectOutput interface to the OSL to simplify 8632output redirection for the AcpiOsPrintf and AcpiOsVprintf 8633interfaces. 8634 8635Code and Data Size: Current core subsystem library sizes are shown 8636below. These are the code and data sizes for the acpica.lib 8637produced by the Microsoft Visual C++ 6.0 compiler, and these 8638values do not include any ACPI driver or OSPM code. The debug 8639version of the code includes the debug output trace mechanism and 8640has a larger code and data size. Note that these values will vary 8641depending on the efficiency of the compiler and the compiler 8642options used during generation. 8643 8644 Previous Release 8645 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 8646 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 8647 Current Release: 8648 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 8649 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 8650 8651 86522) Linux 8653 8654Fixed a panic in the EC driver (Dominik Brodowski) 8655 8656Implemented checksum of the R/XSDT itself during Linux table scan 8657(Richard Schaal) 8658 8659 86603) iASL compiler 8661 8662The AML disassembler is integrated into the compiler. The "-d" 8663option invokes the disassembler to completely disassemble an 8664input AML file, producing as output a text ASL file with the 8665extension ".dsl" (to avoid name collisions with existing .asl 8666source files.) A future enhancement will allow the disassembler 8667to obtain the BIOS DSDT from the registry under Windows. 8668 8669Fixed a problem with the VendorShort and VendorLong resource 8670descriptors where an invalid AML sequence was created. 8671 8672Implemented a fix for BufferData term in the ASL parser. It was 8673inadvertently defined twice, allowing invalid syntax to pass and 8674causing reduction conflicts. 8675 8676Fixed a problem where the Ones opcode could get converted to a 8677value of zero if "Ones" was used where a byte, word or dword value 8678was expected. The 64-bit value is now truncated to the correct 8679size with the correct value. 8680 8681 8682 8683---------------------------------------- 868402 July 2002. Summary of changes for this release. 8685 8686 86871) ACPI CA Core Subsystem Version 20020702: 8688 8689The Table Manager code has been restructured to add several new 8690features. Tables that are not required by the core subsystem 8691(other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer 8692validated in any way and are returned from AcpiGetFirmwareTable if 8693requested. The AcpiOsTableOverride interface is now called for 8694each table that is loaded by the subsystem in order to allow the 8695host to override any table it chooses. Previously, only the DSDT 8696could be overridden. Added one new files, tbrsdt.c and 8697tbgetall.c. 8698 8699Fixed a problem with the conversion of internal package objects to 8700external objects (when a package is returned from a control 8701method.) The return buffer length was set to zero instead of the 8702proper length of the package object. 8703 8704Fixed a reported problem with the use of the RefOf and DeRefOf 8705operators when passing reference arguments to control methods. A 8706new type of Reference object is used internally for references 8707produced by the RefOf operator. 8708 8709Added additional error messages in the Resource Manager to explain 8710AE_BAD_DATA errors when they occur during resource parsing. 8711 8712Split the AcpiEnableSubsystem into two primitives to enable a 8713finer granularity initialization sequence. These two calls should 8714be called in this order: AcpiEnableSubsystem (flags), 8715AcpiInitializeObjects (flags). The flags parameter remains the 8716same. 8717 8718 87192) Linux 8720 8721Updated the ACPI utilities module to understand the new style of 8722fully resolved package objects that are now returned from the core 8723subsystem. This eliminates errors of the form: 8724 8725 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT] 8726 acpi_utils-0430 [145] acpi_evaluate_reference: 8727 Invalid element in package (not a device reference) 8728 8729The method evaluation utility uses the new buffer allocation 8730scheme instead of calling AcpiEvaluate Object twice. 8731 8732Added support for ECDT. This allows the use of the Embedded 8733 8734Controller before the namespace has been fully initialized, which 8735is necessary for ACPI 2.0 support, and for some laptops to 8736initialize properly. (Laptops using ECDT are still rare, so only 8737limited testing was performed of the added functionality.) 8738 8739Fixed memory leaks in the EC driver. 8740 8741Eliminated a brittle code structure in acpi_bus_init(). 8742 8743Eliminated the acpi_evaluate() helper function in utils.c. It is 8744no longer needed since acpi_evaluate_object can optionally 8745allocate memory for the return object. 8746 8747Implemented fix for keyboard hang when getting battery readings on 8748some systems (Stephen White) 8749 8750PCI IRQ routing update (Dominik Brodowski) 8751 8752Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC 8753support 8754 8755---------------------------------------- 875611 June 2002. Summary of changes for this release. 8757 8758 87591) ACPI CA Core Subsystem Version 20020611: 8760 8761Fixed a reported problem where constants such as Zero and One 8762appearing within _PRT packages were not handled correctly within 8763the resource manager code. Originally reported against the ASL 8764compiler because the code generator now optimizes integers to 8765their minimal AML representation (i.e. AML constants if possible.) 8766The _PRT code now handles all AML constant opcodes correctly 8767(Zero, One, Ones, Revision). 8768 8769Fixed a problem with the Concatenate operator in the AML 8770interpreter where a buffer result object was incorrectly marked as 8771not fully evaluated, causing a run-time error of AE_AML_INTERNAL. 8772 8773All package sub-objects are now fully resolved before they are 8774returned from the external ACPI interfaces. This means that name 8775strings are resolved to object handles, and constant operators 8776(Zero, One, Ones, Revision) are resolved to Integers. 8777 8778Implemented immediate resolution of the AML Constant opcodes 8779(Zero, One, Ones, Revision) to Integer objects upon detection 8780within the AML stream. This has simplified and reduced the 8781generated code size of the subsystem by eliminating about 10 8782switch statements for these constants (which previously were 8783contained in Reference objects.) The complicating issues are that 8784the Zero opcode is used as a "placeholder" for unspecified 8785optional target operands and stores to constants are defined to be 8786no-ops. 8787 8788Code and Data Size: Current core subsystem library sizes are shown 8789below. These are the code and data sizes for the acpica.lib 8790produced by the Microsoft Visual C++ 6.0 compiler, and these 8791values do not include any ACPI driver or OSPM code. The debug 8792version of the code includes the debug output trace mechanism and 8793has a larger code and data size. Note that these values will vary 8794depending on the efficiency of the compiler and the compiler 8795options used during generation. 8796 8797 Previous Release 8798 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 8799 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 8800 Current Release: 8801 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 8802 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 8803 8804 88052) Linux 8806 8807 8808Added preliminary support for obtaining _TRA data for PCI root 8809bridges (Bjorn Helgaas). 8810 8811 88123) iASL Compiler Version X2046: 8813 8814Fixed a problem where the "_DDN" reserved name was defined to be a 8815control method with one argument. There are no arguments, and 8816_DDN does not have to be a control method. 8817 8818Fixed a problem with the Linux version of the compiler where the 8819source lines printed with error messages were the wrong lines. 8820This turned out to be the "LF versus CR/LF" difference between 8821Windows and Unix. This appears to be the longstanding issue 8822concerning listing output and error messages. 8823 8824Fixed a problem with the Linux version of compiler where opcode 8825names within error messages were wrong. This was caused by a 8826slight difference in the output of the Flex tool on Linux versus 8827Windows. 8828 8829Fixed a problem with the Linux compiler where the hex output files 8830contained some garbage data caused by an internal buffer overrun. 8831 8832 8833---------------------------------------- 883417 May 2002. Summary of changes for this release. 8835 8836 88371) ACPI CA Core Subsystem Version 20020517: 8838 8839Implemented a workaround to an BIOS bug discovered on the HP 8840OmniBook where the FADT revision number and the table size are 8841inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new 8842behavior is to fallback to using only the ACPI 1.0 fields of the 8843FADT if the table is too small to be a ACPI 2.0 table as claimed 8844by the revision number. Although this is a BIOS bug, this is a 8845case where the workaround is simple enough and with no side 8846effects, so it seemed prudent to add it. A warning message is 8847issued, however. 8848 8849Implemented minimum size checks for the fixed-length ACPI tables - 8850- the FADT and FACS, as well as consistency checks between the 8851revision number and the table size. 8852 8853Fixed a reported problem in the table override support where the 8854new table pointer was incorrectly treated as a physical address 8855instead of a logical address. 8856 8857Eliminated the use of the AE_AML_ERROR exception and replaced it 8858with more descriptive codes. 8859 8860Fixed a problem where an exception would occur if an ASL Field was 8861defined with no named Field Units underneath it (used by some 8862index fields). 8863 8864Code and Data Size: Current core subsystem library sizes are shown 8865below. These are the code and data sizes for the acpica.lib 8866produced by the Microsoft Visual C++ 6.0 compiler, and these 8867values do not include any ACPI driver or OSPM code. The debug 8868version of the code includes the debug output trace mechanism and 8869has a larger code and data size. Note that these values will vary 8870depending on the efficiency of the compiler and the compiler 8871options used during generation. 8872 8873 Previous Release 8874 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 8875 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 8876 Current Release: 8877 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 8878 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 8879 8880 8881 88822) Linux 8883 8884Much work done on ACPI init (MADT and PCI IRQ routing support). 8885(Paul D. and Dominik Brodowski) 8886 8887Fix PCI IRQ-related panic on boot (Sam Revitch) 8888 8889Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno) 8890 8891Fix "MHz" typo (Dominik Brodowski) 8892 8893Fix RTC year 2000 issue (Dominik Brodowski) 8894 8895Preclude multiple button proc entries (Eric Brunet) 8896 8897Moved arch-specific code out of include/platform/aclinux.h 8898 88993) iASL Compiler Version X2044: 8900 8901Implemented error checking for the string used in the EISAID macro 8902(Usually used in the definition of the _HID object.) The code now 8903strictly enforces the PnP format - exactly 7 characters, 3 8904uppercase letters and 4 hex digits. 8905 8906If a raw string is used in the definition of the _HID object 8907(instead of the EISAID macro), the string must contain all 8908alphanumeric characters (e.g., "*PNP0011" is not allowed because 8909of the asterisk.) 8910 8911Implemented checking for invalid use of ACPI reserved names for 8912most of the name creation operators (Name, Device, Event, Mutex, 8913OperationRegion, PowerResource, Processor, and ThermalZone.) 8914Previously, this check was only performed for control methods. 8915 8916Implemented an additional check on the Name operator to emit an 8917error if a reserved name that must be implemented in ASL as a 8918control method is used. We know that a reserved name must be a 8919method if it is defined with input arguments. 8920 8921The warning emitted when a namespace object reference is not found 8922during the cross reference phase has been changed into an error. 8923The "External" directive should be used for names defined in other 8924modules. 8925 8926 89274) Tools and Utilities 8928 8929The 16-bit tools (adump16 and aexec16) have been regenerated and 8930tested. 8931 8932Fixed a problem with the output of both acpidump and adump16 where 8933the indentation of closing parentheses and brackets was not 8934 8935aligned properly with the parent block. 8936 8937 8938---------------------------------------- 893903 May 2002. Summary of changes for this release. 8940 8941 89421) ACPI CA Core Subsystem Version 20020503: 8943 8944Added support a new OSL interface that allows the host operating 8945 8946system software to override the DSDT found in the firmware - 8947AcpiOsTableOverride. With this interface, the OSL can examine the 8948version of the firmware DSDT and replace it with a different one 8949if desired. 8950 8951Added new external interfaces for accessing ACPI registers from 8952device drivers and other system software - AcpiGetRegister and 8953AcpiSetRegister. This was simply an externalization of the 8954existing AcpiHwBitRegister interfaces. 8955 8956Fixed a regression introduced in the previous build where the 8957ASL/AML CreateField operator always returned an error, 8958"destination must be a NS Node". 8959 8960Extended the maximum time (before failure) to successfully enable 8961ACPI mode to 3 seconds. 8962 8963Code and Data Size: Current core subsystem library sizes are shown 8964below. These are the code and data sizes for the acpica.lib 8965produced by the Microsoft Visual C++ 6.0 compiler, and these 8966values do not include any ACPI driver or OSPM code. The debug 8967version of the code includes the debug output trace mechanism and 8968has a larger code and data size. Note that these values will vary 8969depending on the efficiency of the compiler and the compiler 8970options used during generation. 8971 8972 Previous Release 8973 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 8974 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 8975 Current Release: 8976 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 8977 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 8978 8979 89802) Linux 8981 8982Enhanced ACPI init code for SMP. We are now fully MPS and $PIR- 8983free. While 3 out of 4 of our in-house systems work fine, the last 8984one still hangs when testing the LAPIC timer. 8985 8986Renamed many files in 2.5 kernel release to omit "acpi_" from the 8987name. 8988 8989Added warning on boot for Presario 711FR. 8990 8991Sleep improvements (Pavel Machek) 8992 8993ACPI can now be built without CONFIG_PCI enabled. 8994 8995IA64: Fixed memory map functions (JI Lee) 8996 8997 89983) iASL Compiler Version X2043: 8999 9000Added support to allow the compiler to be integrated into the MS 9001VC++ development environment for one-button compilation of single 9002files or entire projects -- with error-to-source-line mapping. 9003 9004Implemented support for compile-time constant folding for the 9005Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0 9006specification. This allows the ASL writer to use expressions 9007instead of Integer/Buffer/String constants in terms that must 9008evaluate to constants at compile time and will also simplify the 9009emitted AML in any such sub-expressions that can be folded 9010(evaluated at compile-time.) This increases the size of the 9011compiler significantly because a portion of the ACPI CA AML 9012interpreter is included within the compiler in order to pre- 9013evaluate constant expressions. 9014 9015 9016Fixed a problem with the "Unicode" ASL macro that caused the 9017compiler to fault. (This macro is used in conjunction with the 9018_STR reserved name.) 9019 9020Implemented an AML opcode optimization to use the Zero, One, and 9021Ones opcodes where possible to further reduce the size of integer 9022constants and thus reduce the overall size of the generated AML 9023code. 9024 9025Implemented error checking for new reserved terms for ACPI version 90262.0A. 9027 9028Implemented the -qr option to display the current list of ACPI 9029reserved names known to the compiler. 9030 9031Implemented the -qc option to display the current list of ASL 9032operators that are allowed within constant expressions and can 9033therefore be folded at compile time if the operands are constants. 9034 9035 90364) Documentation 9037 9038Updated the Programmer's Reference for new interfaces, data types, 9039and memory allocation model options. 9040 9041Updated the iASL Compiler User Reference to apply new format and 9042add information about new features and options. 9043 9044---------------------------------------- 904519 April 2002. Summary of changes for this release. 9046 90471) ACPI CA Core Subsystem Version 20020419: 9048 9049The source code base for the Core Subsystem has been completely 9050cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit 9051versions. The Lint option files used are included in the 9052/acpi/generate/lint directory. 9053 9054Implemented enhanced status/error checking across the entire 9055Hardware manager subsystem. Any hardware errors (reported from 9056the OSL) are now bubbled up and will abort a running control 9057method. 9058 9059 9060Fixed a problem where the per-ACPI-table integer width (32 or 64) 9061was stored only with control method nodes, causing a fault when 9062non-control method code was executed during table loading. The 9063solution implemented uses a global variable to indicate table 9064width across the entire ACPI subsystem. Therefore, ACPI CA does 9065not support mixed integer widths across different ACPI tables 9066(DSDT, SSDT). 9067 9068Fixed a problem where NULL extended fields (X fields) in an ACPI 90692.0 ACPI FADT caused the table load to fail. Although the 9070existing ACPI specification is a bit fuzzy on this topic, the new 9071behavior is to fall back on a ACPI 1.0 field if the corresponding 9072ACPI 2.0 X field is zero (even though the table revision indicates 9073a full ACPI 2.0 table.) The ACPI specification will be updated to 9074clarify this issue. 9075 9076Fixed a problem with the SystemMemory operation region handler 9077where memory was always accessed byte-wise even if the AML- 9078specified access width was larger than a byte. This caused 9079problems on systems with memory-mapped I/O. Memory is now 9080accessed with the width specified. On systems that do not support 9081non-aligned transfers, a check is made to guarantee proper address 9082alignment before proceeding in order to avoid an AML-caused 9083alignment fault within the kernel. 9084 9085 9086Fixed a problem with the ExtendedIrq resource where only one byte 9087of the 4-byte Irq field was extracted. 9088 9089Fixed the AcpiExDigitsNeeded() procedure to support _UID. This 9090function was out of date and required a rewrite. 9091 9092Code and Data Size: Current core subsystem library sizes are shown 9093below. These are the code and data sizes for the acpica.lib 9094produced by the Microsoft Visual C++ 6.0 compiler, and these 9095values do not include any ACPI driver or OSPM code. The debug 9096version of the code includes the debug output trace mechanism and 9097has a larger code and data size. Note that these values will vary 9098depending on the efficiency of the compiler and the compiler 9099options used during generation. 9100 9101 Previous Release 9102 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 9103 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 9104 Current Release: 9105 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 9106 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 9107 9108 91092) Linux 9110 9111PCI IRQ routing fixes (Dominik Brodowski) 9112 9113 91143) iASL Compiler Version X2042: 9115 9116Implemented an additional compile-time error check for a field 9117unit whose size + minimum access width would cause a run-time 9118access beyond the end-of-region. Previously, only the field size 9119itself was checked. 9120 9121The Core subsystem and iASL compiler now share a common parse 9122object in preparation for compile-time evaluation of the type 91233/4/5 ASL operators. 9124 9125 9126---------------------------------------- 9127Summary of changes for this release: 03_29_02 9128 91291) ACPI CA Core Subsystem Version 20020329: 9130 9131Implemented support for late evaluation of TermArg operands to 9132Buffer and Package objects. This allows complex expressions to be 9133used in the declarations of these object types. 9134 9135Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI 91361.0, if the field was larger than 32 bits, it was returned as a 9137buffer - otherwise it was returned as an integer. In ACPI 2.0, 9138the field is returned as a buffer only if the field is larger than 913964 bits. The TableRevision is now considered when making this 9140conversion to avoid incompatibility with existing ASL code. 9141 9142Implemented logical addressing for AcpiOsGetRootPointer. This 9143allows an RSDP with either a logical or physical address. With 9144this support, the host OS can now override all ACPI tables with 9145one logical RSDP. Includes implementation of "typed" pointer 9146support to allow a common data type for both physical and logical 9147pointers internally. This required a change to the 9148AcpiOsGetRootPointer interface. 9149 9150Implemented the use of ACPI 2.0 Generic Address Structures for all 9151GPE, Fixed Event, and PM Timer I/O. This allows the use of memory 9152mapped I/O for these ACPI features. 9153 9154Initialization now ignores not only non-required tables (All 9155tables other than the FADT, FACS, DSDT, and SSDTs), but also does 9156not validate the table headers of unrecognized tables. 9157 9158Fixed a problem where a notify handler could only be 9159installed/removed on an object of type Device. All "notify" 9160 9161objects are now supported -- Devices, Processor, Power, and 9162Thermal. 9163 9164Removed most verbosity from the ACPI_DB_INFO debug level. Only 9165critical information is returned when this debug level is enabled. 9166 9167Code and Data Size: Current core subsystem library sizes are shown 9168below. These are the code and data sizes for the acpica.lib 9169produced by the Microsoft Visual C++ 6.0 compiler, and these 9170values do not include any ACPI driver or OSPM code. The debug 9171version of the code includes the debug output trace mechanism and 9172has a larger code and data size. Note that these values will vary 9173depending on the efficiency of the compiler and the compiler 9174options used during generation. 9175 9176 Previous Release 9177 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 9178 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 9179 Current Release: 9180 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 9181 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 9182 9183 91842) Linux: 9185 9186The processor driver (acpi_processor.c) now fully supports ACPI 91872.0-based processor performance control (e.g. Intel(R) 9188SpeedStep(TM) technology) Note that older laptops that only have 9189the Intel "applet" interface are not supported through this. The 9190'limit' and 'performance' interface (/proc) are fully functional. 9191[Note that basic policy for controlling performance state 9192transitions will be included in the next version of ospmd.] The 9193idle handler was modified to more aggressively use C2, and PIIX4 9194errata handling underwent a complete overhaul (big thanks to 9195Dominik Brodowski). 9196 9197Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR- 9198based devices in the ACPI namespace are now dynamically bound 9199(associated) with their PCI counterparts (e.g. PCI1->01:00.0). 9200This allows, among other things, ACPI to resolve bus numbers for 9201subordinate PCI bridges. 9202 9203Enhanced PCI IRQ routing to get the proper bus number for _PRT 9204entries defined underneath PCI bridges. 9205 9206Added IBM 600E to bad bios list due to invalid _ADR value for 9207PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing. 9208 9209In the process of adding full MADT support (e.g. IOAPIC) for IA32 9210(acpi.c, mpparse.c) -- stay tuned. 9211 9212Added back visual differentiation between fixed-feature and 9213control-method buttons in dmesg. Buttons are also subtyped (e.g. 9214button/power/PWRF) to simplify button identification. 9215 9216We no longer use -Wno-unused when compiling debug. Please ignore 9217any "_THIS_MODULE defined but not used" messages. 9218 9219Can now shut down the system using "magic sysrq" key. 9220 9221 92223) iASL Compiler version 2041: 9223 9224Fixed a problem where conversion errors for hex/octal/decimal 9225constants were not reported. 9226 9227Implemented a fix for the General Register template Address field. 9228This field was 8 bits when it should be 64. 9229 9230Fixed a problem where errors/warnings were no longer being emitted 9231within the listing output file. 9232 9233Implemented the ACPI 2.0A restriction on ACPI Table Signatures to 9234exactly 4 characters, alphanumeric only. 9235 9236 9237 9238 9239---------------------------------------- 9240Summary of changes for this release: 03_08_02 9241 9242 92431) ACPI CA Core Subsystem Version 20020308: 9244 9245Fixed a problem with AML Fields where the use of the "AccessAny" 9246keyword could cause an interpreter error due to attempting to read 9247or write beyond the end of the parent Operation Region. 9248 9249Fixed a problem in the SystemMemory Operation Region handler where 9250an attempt was made to map memory beyond the end of the region. 9251This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY" 9252errors on some Linux systems. 9253 9254Fixed a problem where the interpreter/namespace "search to root" 9255algorithm was not functioning for some object types. Relaxed the 9256internal restriction on the search to allow upsearches for all 9257external object types as well as most internal types. 9258 9259 92602) Linux: 9261 9262We now use safe_halt() macro versus individual calls to sti | hlt. 9263 9264Writing to the processor limit interface should now work. "echo 1" 9265will increase the limit, 2 will decrease, and 0 will reset to the 9266 9267default. 9268 9269 92703) ASL compiler: 9271 9272Fixed segfault on Linux version. 9273 9274 9275---------------------------------------- 9276Summary of changes for this release: 02_25_02 9277 92781) ACPI CA Core Subsystem: 9279 9280 9281Fixed a problem where the GPE bit masks were not initialized 9282properly, causing erratic GPE behavior. 9283 9284Implemented limited support for multiple calling conventions. The 9285code can be generated with either the VPL (variable parameter 9286list, or "C") convention, or the FPL (fixed parameter list, or 9287"Pascal") convention. The core subsystem is about 3.4% smaller 9288when generated with FPL. 9289 9290 92912) Linux 9292 9293Re-add some /proc/acpi/event functionality that was lost during 9294the rewrite 9295 9296Resolved issue with /proc events for fixed-feature buttons showing 9297up as the system device. 9298 9299Fixed checks on C2/C3 latencies to be inclusive of maximum values. 9300 9301Replaced AE_ERRORs in acpi_osl.c with more specific error codes. 9302 9303Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi" 9304 9305Fixed limit interface & usage to fix bugs with passive cooling 9306hysterisis. 9307 9308Restructured PRT support. 9309 9310 9311---------------------------------------- 9312Summary of changes for this label: 02_14_02 9313 9314 93151) ACPI CA Core Subsystem: 9316 9317Implemented support in AcpiLoadTable to allow loading of FACS and 9318FADT tables. 9319 9320Suport for the now-obsolete interim 0.71 64-bit ACPI tables has 9321been removed. All 64-bit platforms should be migrated to the ACPI 93222.0 tables. The actbl71.h header has been removed from the source 9323tree. 9324 9325All C macros defined within the subsystem have been prefixed with 9326"ACPI_" to avoid collision with other system include files. 9327 9328Removed the return value for the two AcpiOsPrint interfaces, since 9329it is never used and causes lint warnings for ignoring the return 9330value. 9331 9332Added error checking to all internal mutex acquire and release 9333calls. Although a failure from one of these interfaces is 9334probably a fatal system error, these checks will cause the 9335immediate abort of the currently executing method or interface. 9336 9337Fixed a problem where the AcpiSetCurrentResources interface could 9338fault. This was a side effect of the deployment of the new memory 9339allocation model. 9340 9341Fixed a couple of problems with the Global Lock support introduced 9342in the last major build. The "common" (1.0/2.0) internal FACS was 9343being overwritten with the FACS signature and clobbering the 9344Global Lock pointer. Also, the actual firmware FACS was being 9345unmapped after construction of the "common" FACS, preventing 9346access to the actual Global Lock field within it. The "common" 9347internal FACS is no longer installed as an actual ACPI table; it 9348is used simply as a global. 9349 9350Code and Data Size: Current core subsystem library sizes are shown 9351below. These are the code and data sizes for the acpica.lib 9352produced by the Microsoft Visual C++ 6.0 compiler, and these 9353values do not include any ACPI driver or OSPM code. The debug 9354version of the code includes the debug output trace mechanism and 9355has a larger code and data size. Note that these values will vary 9356depending on the efficiency of the compiler and the compiler 9357options used during generation. 9358 9359 Previous Release (02_07_01) 9360 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 9361 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 9362 Current Release: 9363 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 9364 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 9365 9366 93672) Linux 9368 9369Updated Linux-specific code for core macro and OSL interface 9370changes described above. 9371 9372Improved /proc/acpi/event. It now can be opened only once and has 9373proper poll functionality. 9374 9375Fixed and restructured power management (acpi_bus). 9376 9377Only create /proc "view by type" when devices of that class exist. 9378 9379Fixed "charging/discharging" bug (and others) in acpi_battery. 9380 9381Improved thermal zone code. 9382 9383 93843) ASL Compiler, version X2039: 9385 9386 9387Implemented the new compiler restriction on ASL String hex/octal 9388escapes to non-null, ASCII values. An error results if an invalid 9389value is used. (This will require an ACPI 2.0 specification 9390change.) 9391 9392AML object labels that are output to the optional C and ASM source 9393are now prefixed with both the ACPI table signature and table ID 9394to help guarantee uniqueness within a large BIOS project. 9395 9396 9397---------------------------------------- 9398Summary of changes for this label: 02_01_02 9399 94001) ACPI CA Core Subsystem: 9401 9402ACPI 2.0 support is complete in the entire Core Subsystem and the 9403ASL compiler. All new ACPI 2.0 operators are implemented and all 9404other changes for ACPI 2.0 support are complete. With 9405simultaneous code and data optimizations throughout the subsystem, 9406ACPI 2.0 support has been implemented with almost no additional 9407cost in terms of code and data size. 9408 9409Implemented a new mechanism for allocation of return buffers. If 9410the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will 9411be allocated on behalf of the caller. Consolidated all return 9412buffer validation and allocation to a common procedure. Return 9413buffers will be allocated via the primary OSL allocation interface 9414since it appears that a separate pool is not needed by most users. 9415If a separate pool is required for these buffers, the caller can 9416still use the original mechanism and pre-allocate the buffer(s). 9417 9418Implemented support for string operands within the DerefOf 9419operator. 9420 9421Restructured the Hardware and Event managers to be table driven, 9422simplifying the source code and reducing the amount of generated 9423code. 9424 9425Split the common read/write low-level ACPI register bitfield 9426procedure into a separate read and write, simplifying the code 9427considerably. 9428 9429Obsoleted the AcpiOsCallocate OSL interface. This interface was 9430used only a handful of times and didn't have enough critical mass 9431for a separate interface. Replaced with a common calloc procedure 9432in the core. 9433 9434Fixed a reported problem with the GPE number mapping mechanism 9435that allows GPE1 numbers to be non-contiguous with GPE0. 9436Reorganized the GPE information and shrunk a large array that was 9437originally large enough to hold info for all possible GPEs (256) 9438to simply large enough to hold all GPEs up to the largest GPE 9439number on the machine. 9440 9441Fixed a reported problem with resource structure alignment on 64- 9442bit platforms. 9443 9444Changed the AcpiEnableEvent and AcpiDisableEvent external 9445interfaces to not require any flags for the common case of 9446enabling/disabling a GPE. 9447 9448Implemented support to allow a "Notify" on a Processor object. 9449 9450Most TBDs in comments within the source code have been resolved 9451and eliminated. 9452 9453 9454Fixed a problem in the interpreter where a standalone parent 9455prefix (^) was not handled correctly in the interpreter and 9456debugger. 9457 9458Removed obsolete and unnecessary GPE save/restore code. 9459 9460Implemented Field support in the ASL Load operator. This allows a 9461table to be loaded from a named field, in addition to loading a 9462table directly from an Operation Region. 9463 9464Implemented timeout and handle support in the external Global Lock 9465interfaces. 9466 9467Fixed a problem in the AcpiDump utility where pathnames were no 9468longer being generated correctly during the dump of named objects. 9469 9470Modified the AML debugger to give a full display of if/while 9471predicates instead of just one AML opcode at a time. (The 9472predicate can have several nested ASL statements.) The old method 9473was confusing during single stepping. 9474 9475Code and Data Size: Current core subsystem library sizes are shown 9476below. These are the code and data sizes for the acpica.lib 9477produced by the Microsoft Visual C++ 6.0 compiler, and these 9478values do not include any ACPI driver or OSPM code. The debug 9479version of the code includes the debug output trace mechanism and 9480has a larger code and data size. Note that these values will vary 9481depending on the efficiency of the compiler and the compiler 9482options used during generation. 9483 9484 Previous Release (12_18_01) 9485 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 9486 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 9487 Current Release: 9488 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 9489 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 9490 94912) Linux 9492 9493 Implemented fix for PIIX reverse throttling errata (Processor 9494driver) 9495 9496Added new Limit interface (Processor and Thermal drivers) 9497 9498New thermal policy (Thermal driver) 9499 9500Many updates to /proc 9501 9502Battery "low" event support (Battery driver) 9503 9504Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers) 9505 9506IA32 - IA64 initialization unification, no longer experimental 9507 9508Menuconfig options redesigned 9509 95103) ASL Compiler, version X2037: 9511 9512Implemented several new output features to simplify integration of 9513AML code into firmware: 1) Output the AML in C source code with 9514labels for each named ASL object. The original ASL source code 9515is interleaved as C comments. 2) Output the AML in ASM source code 9516with labels and interleaved ASL source. 3) Output the AML in 9517raw hex table form, in either C or ASM. 9518 9519Implemented support for optional string parameters to the 9520LoadTable operator. 9521 9522Completed support for embedded escape sequences within string 9523literals. The compiler now supports all single character escapes 9524as well as the Octal and Hex escapes. Note: the insertion of a 9525null byte into a string literal (via the hex/octal escape) causes 9526the string to be immediately terminated. A warning is issued. 9527 9528Fixed a problem where incorrect AML was generated for the case 9529where an ASL namepath consists of a single parent prefix ( 9530 9531) with no trailing name segments. 9532 9533The compiler has been successfully generated with a 64-bit C 9534compiler. 9535 9536 9537 9538 9539---------------------------------------- 9540Summary of changes for this label: 12_18_01 9541 95421) Linux 9543 9544Enhanced blacklist with reason and severity fields. Any table's 9545signature may now be used to identify a blacklisted system. 9546 9547Call _PIC control method to inform the firmware which interrupt 9548model the OS is using. Turn on any disabled link devices. 9549 9550Cleaned up busmgr /proc error handling (Andreas Dilger) 9551 9552 2) ACPI CA Core Subsystem: 9553 9554Implemented ACPI 2.0 semantics for the "Break" operator (Exit from 9555while loop) 9556 9557Completed implementation of the ACPI 2.0 "Continue", 9558"ConcatenateResTemplate", "DataTableRegion", and "LoadTable" 9559operators. All new ACPI 2.0 operators are now implemented in both 9560the ASL compiler and the AML interpreter. The only remaining ACPI 95612.0 task is support for the String data type in the DerefOf 9562operator. Fixed a problem with AcquireMutex where the status code 9563was lost if the caller had to actually wait for the mutex. 9564 9565Increased the maximum ASL Field size from 64K bits to 4G bits. 9566 9567Completed implementation of the external Global Lock interfaces -- 9568AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and 9569Handler parameters were added. 9570 9571Completed another pass at removing warnings and issues when 9572compiling with 64-bit compilers. The code now compiles cleanly 9573with the Intel 64-bit C/C++ compiler. Most notably, the pointer 9574add and subtract (diff) macros have changed considerably. 9575 9576 9577Created and deployed a new ACPI_SIZE type that is 64-bits wide on 957864-bit platforms, 32-bits on all others. This type is used 9579wherever memory allocation and/or the C sizeof() operator is used, 9580and affects the OSL memory allocation interfaces AcpiOsAllocate 9581and AcpiOsCallocate. 9582 9583Implemented sticky user breakpoints in the AML debugger. 9584 9585Code and Data Size: Current core subsystem library sizes are shown 9586below. These are the code and data sizes for the acpica.lib 9587produced by the Microsoft Visual C++ 6.0 compiler, and these 9588values do not include any ACPI driver or OSPM code. The debug 9589version of the code includes the debug output trace mechanism and 9590has a larger code and data size. Note that these values will vary 9591depending on the efficiency of the compiler and the compiler 9592options used during generation. 9593 9594 Previous Release (12_05_01) 9595 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 9596 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 9597 Current Release: 9598 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 9599 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 9600 9601 3) ASL Compiler, version X2034: 9602 9603Now checks for (and generates an error if detected) the use of a 9604Break or Continue statement without an enclosing While statement. 9605 9606 9607Successfully generated the compiler with the Intel 64-bit C 9608compiler. 9609 9610 ---------------------------------------- 9611Summary of changes for this label: 12_05_01 9612 9613 1) ACPI CA Core Subsystem: 9614 9615The ACPI 2.0 CopyObject operator is fully implemented. This 9616operator creates a new copy of an object (and is also used to 9617bypass the "implicit conversion" mechanism of the Store operator.) 9618 9619The ACPI 2.0 semantics for the SizeOf operator are fully 9620implemented. The change is that performing a SizeOf on a 9621reference object causes an automatic dereference of the object to 9622tha actual value before the size is evaluated. This behavior was 9623undefined in ACPI 1.0. 9624 9625The ACPI 2.0 semantics for the Extended IRQ resource descriptor 9626have been implemented. The interrupt polarity and mode are now 9627independently set. 9628 9629Fixed a problem where ASL Constants (Zero, One, Ones, Revision) 9630appearing in Package objects were not properly converted to 9631integers when the internal Package was converted to an external 9632object (via the AcpiEvaluateObject interface.) 9633 9634Fixed a problem with the namespace object deletion mechanism for 9635objects created by control methods. There were two parts to this 9636problem: 1) Objects created during the initialization phase method 9637parse were not being deleted, and 2) The object owner ID mechanism 9638to track objects was broken. 9639 9640Fixed a problem where the use of the ASL Scope operator within a 9641control method would result in an invalid opcode exception. 9642 9643Fixed a problem introduced in the previous label where the buffer 9644length required for the _PRT structure was not being returned 9645correctly. 9646 9647Code and Data Size: Current core subsystem library sizes are shown 9648below. These are the code and data sizes for the acpica.lib 9649produced by the Microsoft Visual C++ 6.0 compiler, and these 9650values do not include any ACPI driver or OSPM code. The debug 9651version of the code includes the debug output trace mechanism and 9652has a larger code and data size. Note that these values will vary 9653depending on the efficiency of the compiler and the compiler 9654options used during generation. 9655 9656 Previous Release (11_20_01) 9657 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 9658 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 9659 9660 Current Release: 9661 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 9662 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 9663 9664 2) Linux: 9665 9666Updated all files to apply cleanly against 2.4.16. 9667 9668Added basic PCI Interrupt Routing Table (PRT) support for IA32 9669(acpi_pci.c), and unified the PRT code for IA32 and IA64. This 9670version supports both static and dyanmic PRT entries, but dynamic 9671entries are treated as if they were static (not yet 9672reconfigurable). Architecture- specific code to use this data is 9673absent on IA32 but should be available shortly. 9674 9675Changed the initialization sequence to start the ACPI interpreter 9676(acpi_init) prior to initialization of the PCI driver (pci_init) 9677in init/main.c. This ordering is required to support PRT and 9678facilitate other (future) enhancement. A side effect is that the 9679ACPI bus driver and certain device drivers can no longer be loaded 9680as modules. 9681 9682Modified the 'make menuconfig' options to allow PCI Interrupt 9683Routing support to be included without the ACPI Bus and other 9684device drivers. 9685 9686 3) ASL Compiler, version X2033: 9687 9688Fixed some issues with the use of the new CopyObject and 9689DataTableRegion operators. Both are fully functional. 9690 9691 ---------------------------------------- 9692Summary of changes for this label: 11_20_01 9693 9694 20 November 2001. Summary of changes for this release. 9695 9696 1) ACPI CA Core Subsystem: 9697 9698Updated Index support to match ACPI 2.0 semantics. Storing a 9699Integer, String, or Buffer to an Index of a Buffer will store only 9700the least-significant byte of the source to the Indexed buffer 9701byte. Multiple writes are not performed. 9702 9703Fixed a problem where the access type used in an AccessAs ASL 9704operator was not recorded correctly into the field object. 9705 9706Fixed a problem where ASL Event objects were created in a 9707signalled state. Events are now created in an unsignalled state. 9708 9709The internal object cache is now purged after table loading and 9710initialization to reduce the use of dynamic kernel memory -- on 9711the assumption that object use is greatest during the parse phase 9712of the entire table (versus the run-time use of individual control 9713methods.) 9714 9715ACPI 2.0 variable-length packages are now fully operational. 9716 9717Code and Data Size: Code and Data optimizations have permitted new 9718feature development with an actual reduction in the library size. 9719Current core subsystem library sizes are shown below. These are 9720the code and data sizes for the acpica.lib produced by the 9721Microsoft Visual C++ 6.0 compiler, and these values do not include 9722any ACPI driver or OSPM code. The debug version of the code 9723includes the debug output trace mechanism and has a larger code 9724and data size. Note that these values will vary depending on the 9725efficiency of the compiler and the compiler options used during 9726generation. 9727 9728 Previous Release (11_09_01): 9729 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 9730 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 9731 9732 Current Release: 9733 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 9734 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 9735 9736 2) Linux: 9737 9738Enhanced the ACPI boot-time initialization code to allow the use 9739of Local APIC tables for processor enumeration on IA-32, and to 9740pave the way for a fully MPS-free boot (on SMP systems) in the 9741near future. This functionality replaces 9742arch/i386/kernel/acpitables.c, which was introduced in an earlier 97432.4.15-preX release. To enable this feature you must add 9744"acpi_boot=on" to the kernel command line -- see the help entry 9745for CONFIG_ACPI_BOOT for more information. An IA-64 release is in 9746the works... 9747 9748Restructured the configuration options to allow boot-time table 9749parsing support without inclusion of the ACPI Interpreter (and 9750other) code. 9751 9752NOTE: This release does not include fixes for the reported events, 9753power-down, and thermal passive cooling issues (coming soon). 9754 9755 3) ASL Compiler: 9756 9757Added additional typechecking for Fields within restricted access 9758Operation Regions. All fields within EC and CMOS regions must be 9759declared with ByteAcc. All fields withing SMBus regions must be 9760declared with the BufferAcc access type. 9761 9762Fixed a problem where the listing file output of control methods 9763no longer interleaved the actual AML code with the ASL source 9764code. 9765 9766 9767 9768 9769---------------------------------------- 9770Summary of changes for this label: 11_09_01 9771 97721) ACPI CA Core Subsystem: 9773 9774Implemented ACPI 2.0-defined support for writes to fields with a 9775Buffer, String, or Integer source operand that is smaller than the 9776target field. In these cases, the source operand is zero-extended 9777to fill the target field. 9778 9779Fixed a problem where a Field starting bit offset (within the 9780parent operation region) was calculated incorrectly if the 9781 9782alignment of the field differed from the access width. This 9783affected CreateWordField, CreateDwordField, CreateQwordField, and 9784possibly other fields that use the "AccessAny" keyword. 9785 9786Fixed a problem introduced in the 11_02_01 release where indirect 9787stores through method arguments did not operate correctly. 9788 97892) Linux: 9790 9791Implemented boot-time ACPI table parsing support 9792(CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code 9793facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than 9794legacy BIOS interfaces (e.g. MPS) for the configuration of system 9795processors, memory, and interrupts during setup_arch(). Note that 9796this patch does not include the required architecture-specific 9797changes required to apply this information -- subsequent patches 9798will be posted for both IA32 and IA64 to achieve this. 9799 9800Added low-level sleep support for IA32 platforms, courtesy of Pat 9801Mochel. This allows IA32 systems to transition to/from various 9802sleeping states (e.g. S1, S3), although the lack of a centralized 9803driver model and power-manageable drivers will prevent its 9804(successful) use on most systems. 9805 9806Revamped the ACPI 'menuconfig' layout: created new "ACPI Support" 9807submenu, unified IA32 and IA64 options, added new "Boot using ACPI 9808tables" option, etc. 9809 9810Increased the default timeout for the EC driver from 1ms to 10ms 9811(1000 cycles of 10us) to try to address AE_TIME errors during EC 9812transactions. 9813 9814 ---------------------------------------- 9815Summary of changes for this label: 11_02_01 9816 98171) ACPI CA Core Subsystem: 9818 9819ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access 9820(QWordAcc keyword). All ACPI 2.0 64-bit support is now 9821implemented. 9822 9823OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required 9824changes to support ACPI 2.0 Qword field access. Read/Write 9825PciConfiguration(), Read/Write Memory(), and Read/Write Port() now 9826accept an ACPI_INTEGER (64 bits) as the value parameter. Also, 9827the value parameter for the address space handler interface is now 9828an ACPI_INTEGER. OSL implementations of these interfaces must now 9829handle the case where the Width parameter is 64. 9830 9831Index Fields: Fixed a problem where unaligned bit assembly and 9832disassembly for IndexFields was not supported correctly. 9833 9834Index and Bank Fields: Nested Index and Bank Fields are now 9835supported. During field access, a check is performed to ensure 9836that the value written to an Index or Bank register is not out of 9837the range of the register. The Index (or Bank) register is 9838written before each access to the field data. Future support will 9839include allowing individual IndexFields to be wider than the 9840DataRegister width. 9841 9842Fields: Fixed a problem where the AML interpreter was incorrectly 9843attempting to write beyond the end of a Field/OpRegion. This was 9844a boundary case that occurred when a DWORD field was written to a 9845BYTE access OpRegion, forcing multiple writes and causing the 9846interpreter to write one datum too many. 9847 9848Fields: Fixed a problem with Field/OpRegion access where the 9849starting bit address of a field was incorrectly calculated if the 9850current access type was wider than a byte (WordAcc, DwordAcc, or 9851QwordAcc). 9852 9853Fields: Fixed a problem where forward references to individual 9854FieldUnits (individual Field names within a Field definition) were 9855not resolved during the AML table load. 9856 9857Fields: Fixed a problem where forward references from a Field 9858definition to the parent Operation Region definition were not 9859resolved during the AML table load. 9860 9861Fields: Duplicate FieldUnit names within a scope are now detected 9862during AML table load. 9863 9864Acpi Interfaces: Fixed a problem where the AcpiGetName() interface 9865returned an incorrect name for the root node. 9866 9867Code and Data Size: Code and Data optimizations have permitted new 9868feature development with an actual reduction in the library size. 9869Current core subsystem library sizes are shown below. These are 9870the code and data sizes for the acpica.lib produced by the 9871Microsoft Visual C++ 6.0 compiler, and these values do not include 9872any ACPI driver or OSPM code. The debug version of the code 9873includes the debug output trace mechanism and has a larger code 9874and data size. Note that these values will vary depending on the 9875efficiency of the compiler and the compiler options used during 9876generation. 9877 9878 Previous Release (10_18_01): 9879 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 9880 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 9881 9882 Current Release: 9883 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 9884 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 9885 9886 2) Linux: 9887 9888Improved /proc processor output (Pavel Machek) Re-added 9889MODULE_LICENSE("GPL") to all modules. 9890 9891 3) ASL Compiler version X2030: 9892 9893Duplicate FieldUnit names within a scope are now detected and 9894flagged as errors. 9895 9896 4) Documentation: 9897 9898Programmer Reference updated to reflect OSL and address space 9899handler interface changes described above. 9900 9901---------------------------------------- 9902Summary of changes for this label: 10_18_01 9903 9904ACPI CA Core Subsystem: 9905 9906Fixed a problem with the internal object reference count mechanism 9907that occasionally caused premature object deletion. This resolves 9908all of the outstanding problem reports where an object is deleted 9909in the middle of an interpreter evaluation. Although this problem 9910only showed up in rather obscure cases, the solution to the 9911problem involved an adjustment of all reference counts involving 9912objects attached to namespace nodes. 9913 9914Fixed a problem with Field support in the interpreter where 9915writing to an aligned field whose length is an exact multiple (2 9916or greater) of the field access granularity would cause an attempt 9917to write beyond the end of the field. 9918 9919The top level AML opcode execution functions within the 9920interpreter have been renamed with a more meaningful and 9921consistent naming convention. The modules exmonad.c and 9922exdyadic.c were eliminated. New modules are exoparg1.c, 9923exoparg2.c, exoparg3.c, and exoparg6.c. 9924 9925Support for the ACPI 2.0 "Mid" ASL operator has been implemented. 9926 9927Fixed a problem where the AML debugger was causing some internal 9928objects to not be deleted during subsystem termination. 9929 9930Fixed a problem with the external AcpiEvaluateObject interface 9931where the subsystem would fault if the named object to be 9932evaluated refered to a constant such as Zero, Ones, etc. 9933 9934Fixed a problem with IndexFields and BankFields where the 9935subsystem would fault if the index, data, or bank registers were 9936not defined in the same scope as the field itself. 9937 9938Added printf format string checking for compilers that support 9939this feature. Corrected more than 50 instances of issues with 9940format specifiers within invocations of ACPI_DEBUG_PRINT 9941throughout the core subsystem code. 9942 9943The ASL "Revision" operator now returns the ACPI support level 9944implemented in the core - the value "2" since the ACPI 2.0 support 9945is more than 50% implemented. 9946 9947Enhanced the output of the AML debugger "dump namespace" command 9948to output in a more human-readable form. 9949 9950Current core subsystem library code sizes are shown below. These 9951 9952are the code and data sizes for the acpica.lib produced by the 9953Microsoft Visual C++ 6.0 compiler, and these values do not include 9954any ACPI driver or OSPM code. The debug version of the code 9955includes the full debug trace mechanism -- leading to a much 9956 9957larger code and data size. Note that these values will vary 9958depending on the efficiency of the compiler and the compiler 9959options used during generation. 9960 9961 Previous Label (09_20_01): 9962 Non-Debug Version: 65K Code, 5K Data, 70K Total 9963 Debug Version: 138K Code, 58K Data, 196K Total 9964 9965 This Label: 9966 9967 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 9968 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 9969 9970Linux: 9971 9972Implemented a "Bad BIOS Blacklist" to track machines that have 9973known ASL/AML problems. 9974 9975Enhanced the /proc interface for the thermal zone driver and added 9976support for _HOT (the critical suspend trip point). The 'info' 9977file now includes threshold/policy information, and allows setting 9978of _SCP (cooling preference) and _TZP (polling frequency) values 9979to the 'info' file. Examples: "echo tzp=5 > info" sets the polling 9980frequency to 5 seconds, and "echo scp=1 > info" sets the cooling 9981preference to the passive/quiet mode (if supported by the ASL). 9982 9983Implemented a workaround for a gcc bug that resuted in an OOPs 9984when loading the control method battery driver. 9985 9986 ---------------------------------------- 9987Summary of changes for this label: 09_20_01 9988 9989 ACPI CA Core Subsystem: 9990 9991The AcpiEnableEvent and AcpiDisableEvent interfaces have been 9992modified to allow individual GPE levels to be flagged as wake- 9993enabled (i.e., these GPEs are to remain enabled when the platform 9994sleeps.) 9995 9996The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now 9997support wake-enabled GPEs. This means that upon entering the 9998sleep state, all GPEs that are not wake-enabled are disabled. 9999When leaving the sleep state, these GPEs are reenabled. 10000 10001A local double-precision divide/modulo module has been added to 10002enhance portability to OS kernels where a 64-bit math library is 10003not available. The new module is "utmath.c". 10004 10005Several optimizations have been made to reduce the use of CPU 10006stack. Originally over 2K, the maximum stack usage is now below 100072K at 1860 bytes (1.82k) 10008 10009Fixed a problem with the AcpiGetFirmwareTable interface where the 10010root table pointer was not mapped into a logical address properly. 10011 10012Fixed a problem where a NULL pointer was being dereferenced in the 10013interpreter code for the ASL Notify operator. 10014 10015Fixed a problem where the use of the ASL Revision operator 10016returned an error. This operator now returns the current version 10017of the ACPI CA core subsystem. 10018 10019Fixed a problem where objects passed as control method parameters 10020to AcpiEvaluateObject were always deleted at method termination. 10021However, these objects may end up being stored into the namespace 10022by the called method. The object reference count mechanism was 10023applied to these objects instead of a force delete. 10024 10025Fixed a problem where static strings or buffers (contained in the 10026AML code) that are declared as package elements within the ASL 10027code could cause a fault because the interpreter would attempt to 10028delete them. These objects are now marked with the "static 10029object" flag to prevent any attempt to delete them. 10030 10031Implemented an interpreter optimization to use operands directly 10032from the state object instead of extracting the operands to local 10033variables. This reduces stack use and code size, and improves 10034performance. 10035 10036The module exxface.c was eliminated as it was an unnecessary extra 10037layer of code. 10038 10039Current core subsystem library code sizes are shown below. These 10040are the code and data sizes for the acpica.lib produced by the 10041Microsoft Visual C++ 6.0 compiler, and these values do not include 10042any ACPI driver or OSPM code. The debug version of the code 10043includes the full debug trace mechanism -- leading to a much 10044larger code and data size. Note that these values will vary 10045depending on the efficiency of the compiler and the compiler 10046options used during generation. 10047 10048 Non-Debug Version: 65K Code, 5K Data, 70K Total 10049(Previously 69K) Debug Version: 138K Code, 58K Data, 196K 10050Total (Previously 195K) 10051 10052Linux: 10053 10054Support for ACPI 2.0 64-bit integers has been added. All ACPI 10055Integer objects are now 64 bits wide 10056 10057All Acpi data types and structures are now in lower case. Only 10058Acpi macros are upper case for differentiation. 10059 10060 Documentation: 10061 10062Changes to the external interfaces as described above. 10063 10064 ---------------------------------------- 10065Summary of changes for this label: 08_31_01 10066 10067 ACPI CA Core Subsystem: 10068 10069A bug with interpreter implementation of the ASL Divide operator 10070was found and fixed. The implicit function return value (not the 10071explicit store operands) was returning the remainder instead of 10072the quotient. This was a longstanding bug and it fixes several 10073known outstanding issues on various platforms. 10074 10075The ACPI_DEBUG_PRINT and function trace entry/exit macros have 10076been further optimized for size. There are 700 invocations of the 10077DEBUG_PRINT macro alone, so each optimization reduces the size of 10078the debug version of the subsystem significantly. 10079 10080A stack trace mechanism has been implemented. The maximum stack 10081usage is about 2K on 32-bit platforms. The debugger command "stat 10082stack" will display the current maximum stack usage. 10083 10084All public symbols and global variables within the subsystem are 10085now prefixed with the string "Acpi". This keeps all of the 10086symbols grouped together in a kernel map, and avoids conflicts 10087with other kernel subsystems. 10088 10089Most of the internal fixed lookup tables have been moved into the 10090code segment via the const operator. 10091 10092Several enhancements have been made to the interpreter to both 10093reduce the code size and improve performance. 10094 10095Current core subsystem library code sizes are shown below. These 10096are the code and data sizes for the acpica.lib produced by the 10097Microsoft Visual C++ 6.0 compiler, and these values do not include 10098any ACPI driver or OSPM code. The debug version of the code 10099includes the full debug trace mechanism which contains over 700 10100invocations of the DEBUG_PRINT macro, 500 function entry macro 10101invocations, and over 900 function exit macro invocations -- 10102leading to a much larger code and data size. Note that these 10103values will vary depending on the efficiency of the compiler and 10104the compiler options used during generation. 10105 10106 Non-Debug Version: 64K Code, 5K Data, 69K Total 10107Debug Version: 137K Code, 58K Data, 195K Total 10108 10109 Linux: 10110 10111Implemented wbinvd() macro, pending a kernel-wide definition. 10112 10113Fixed /proc/acpi/event to handle poll() and short reads. 10114 10115 ASL Compiler, version X2026: 10116 10117Fixed a problem introduced in the previous label where the AML 10118 10119code emitted for package objects produced packages with zero 10120length. 10121 10122 ---------------------------------------- 10123Summary of changes for this label: 08_16_01 10124 10125ACPI CA Core Subsystem: 10126 10127The following ACPI 2.0 ASL operators have been implemented in the 10128AML interpreter (These are already supported by the Intel ASL 10129compiler): ToDecimalString, ToHexString, ToString, ToInteger, and 10130ToBuffer. Support for 64-bit AML constants is implemented in the 10131AML parser, debugger, and disassembler. 10132 10133The internal memory tracking mechanism (leak detection code) has 10134been upgraded to reduce the memory overhead (a separate tracking 10135block is no longer allocated for each memory allocation), and now 10136supports all of the internal object caches. 10137 10138The data structures and code for the internal object caches have 10139been coelesced and optimized so that there is a single cache and 10140memory list data structure and a single group of functions that 10141implement generic cache management. This has reduced the code 10142size in both the debug and release versions of the subsystem. 10143 10144The DEBUG_PRINT macro(s) have been optimized for size and replaced 10145by ACPI_DEBUG_PRINT. The syntax for this macro is slightly 10146different, because it generates a single call to an internal 10147function. This results in a savings of about 90 bytes per 10148invocation, resulting in an overall code and data savings of about 1014916% in the debug version of the subsystem. 10150 10151 Linux: 10152 10153Fixed C3 disk corruption problems and re-enabled C3 on supporting 10154machines. 10155 10156Integrated low-level sleep code by Patrick Mochel. 10157 10158Further tweaked source code Linuxization. 10159 10160Other minor fixes. 10161 10162 ASL Compiler: 10163 10164Support for ACPI 2.0 variable length packages is fixed/completed. 10165 10166Fixed a problem where the optional length parameter for the ACPI 101672.0 ToString operator. 10168 10169Fixed multiple extraneous error messages when a syntax error is 10170detected within the declaration line of a control method. 10171 10172 ---------------------------------------- 10173Summary of changes for this label: 07_17_01 10174 10175ACPI CA Core Subsystem: 10176 10177Added a new interface named AcpiGetFirmwareTable to obtain any 10178ACPI table via the ACPI signature. The interface can be called at 10179any time during kernel initialization, even before the kernel 10180virtual memory manager is initialized and paging is enabled. This 10181allows kernel subsystems to obtain ACPI tables very early, even 10182before the ACPI CA subsystem is initialized. 10183 10184Fixed a problem where Fields defined with the AnyAcc attribute 10185could be resolved to the incorrect address under the following 10186conditions: 1) the field width is larger than 8 bits and 2) the 10187parent operation region is not defined on a DWORD boundary. 10188 10189Fixed a problem where the interpreter is not being locked during 10190namespace initialization (during execution of the _INI control 10191methods), causing an error when an attempt is made to release it 10192later. 10193 10194ACPI 2.0 support in the AML Interpreter has begun and will be 10195ongoing throughout the rest of this year. In this label, The Mod 10196operator is implemented. 10197 10198Added a new data type to contain full PCI addresses named 10199ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device, 10200and Function values. 10201 10202 Linux: 10203 10204Enhanced the Linux version of the source code to change most 10205capitalized ACPI type names to lowercase. For example, all 10206instances of ACPI_STATUS are changed to acpi_status. This will 10207result in a large diff, but the change is strictly cosmetic and 10208aligns the CA code closer to the Linux coding standard. 10209 10210OSL Interfaces: 10211 10212The interfaces to the PCI configuration space have been changed to 10213add the PCI Segment number and to split the single 32-bit combined 10214DeviceFunction field into two 16-bit fields. This was 10215accomplished by moving the four values that define an address in 10216PCI configuration space (segment, bus, device, and function) to 10217the new ACPI_PCI_ID structure. 10218 10219The changes to the PCI configuration space interfaces led to a 10220reexamination of the complete set of address space access 10221interfaces for PCI, I/O, and Memory. The previously existing 18 10222interfaces have proven difficult to maintain (any small change 10223must be propagated across at least 6 interfaces) and do not easily 10224allow for future expansion to 64 bits if necessary. Also, on some 10225systems, it would not be appropriate to demultiplex the access 10226width (8, 16, 32,or 64) before calling the OSL if the 10227corresponding native OS interfaces contain a similar access width 10228parameter. For these reasons, the 18 address space interfaces 10229have been replaced by these 6 new ones: 10230 10231AcpiOsReadPciConfiguration 10232AcpiOsWritePciConfiguration 10233AcpiOsReadMemory 10234AcpiOsWriteMemory 10235AcpiOsReadPort 10236AcpiOsWritePort 10237 10238Added a new interface named AcpiOsGetRootPointer to allow the OSL 10239to perform the platform and/or OS-specific actions necessary to 10240obtain the ACPI RSDP table pointer. On IA-32 platforms, this 10241interface will simply call down to the CA core to perform the low- 10242memory search for the table. On IA-64, the RSDP is obtained from 10243EFI. Migrating this interface to the OSL allows the CA core to 10244 10245remain OS and platform independent. 10246 10247Added a new interface named AcpiOsSignal to provide a generic 10248"function code and pointer" interface for various miscellaneous 10249signals and notifications that must be made to the host OS. The 10250first such signals are intended to support the ASL Fatal and 10251Breakpoint operators. In the latter case, the AcpiOsBreakpoint 10252interface has been obsoleted. 10253 10254The definition of the AcpiFormatException interface has been 10255changed to simplify its use. The caller no longer must supply a 10256buffer to the call; A pointer to a const string is now returned 10257directly. This allows the call to be easily used in printf 10258statements, etc. since the caller does not have to manage a local 10259buffer. 10260 10261 10262 ASL Compiler, Version X2025: 10263 10264The ACPI 2.0 Switch/Case/Default operators have been implemented 10265and are fully functional. They will work with all ACPI 1.0 10266interpreters, since the operators are simply translated to If/Else 10267pairs. 10268 10269The ACPI 2.0 ElseIf operator is implemented and will also work 10270with 1.0 interpreters, for the same reason. 10271 10272Implemented support for ACPI 2.0 variable-length packages. These 10273packages have a separate opcode, and their size is determined by 10274the interpreter at run-time. 10275 10276Documentation The ACPI CA Programmer Reference has been updated to 10277reflect the new interfaces and changes to existing interfaces. 10278 10279 ------------------------------------------ 10280Summary of changes for this label: 06_15_01 10281 10282 ACPI CA Core Subsystem: 10283 10284Fixed a problem where a DWORD-accessed field within a Buffer 10285object would get its byte address inadvertently rounded down to 10286the nearest DWORD. Buffers are always Byte-accessible. 10287 10288 ASL Compiler, version X2024: 10289 10290Fixed a problem where the Switch() operator would either fault or 10291hang the compiler. Note however, that the AML code for this ACPI 102922.0 operator is not yet implemented. 10293 10294Compiler uses the new AcpiOsGetTimer interface to obtain compile 10295timings. 10296 10297Implementation of the CreateField operator automatically converts 10298a reference to a named field within a resource descriptor from a 10299byte offset to a bit offset if required. 10300 10301Added some missing named fields from the resource descriptor 10302support. These are the names that are automatically created by the 10303compiler to reference fields within a descriptor. They are only 10304valid at compile time and are not passed through to the AML 10305interpreter. 10306 10307Resource descriptor named fields are now typed as Integers and 10308subject to compile-time typechecking when used in expressions. 10309 10310 ------------------------------------------ 10311Summary of changes for this label: 05_18_01 10312 10313 ACPI CA Core Subsystem: 10314 10315Fixed a couple of problems in the Field support code where bits 10316from adjacent fields could be returned along with the proper field 10317bits. Restructured the field support code to improve performance, 10318readability and maintainability. 10319 10320New DEBUG_PRINTP macro automatically inserts the procedure name 10321into the output, saving hundreds of copies of procedure name 10322strings within the source, shrinking the memory footprint of the 10323debug version of the core subsystem. 10324 10325 Source Code Structure: 10326 10327The source code directory tree was restructured to reflect the 10328current organization of the component architecture. Some files 10329and directories have been moved and/or renamed. 10330 10331 Linux: 10332 10333Fixed leaking kacpidpc processes. 10334 10335Fixed queueing event data even when /proc/acpi/event is not 10336opened. 10337 10338 ASL Compiler, version X2020: 10339 10340Memory allocation performance enhancement - over 24X compile time 10341improvement on large ASL files. Parse nodes and namestring 10342buffers are now allocated from a large internal compiler buffer. 10343 10344The temporary .SRC file is deleted unless the "-s" option is 10345specified 10346 10347The "-d" debug output option now sends all output to the .DBG file 10348instead of the console. 10349 10350"External" second parameter is now optional 10351 10352"ElseIf" syntax now properly allows the predicate 10353 10354Last operand to "Load" now recognized as a Target operand 10355 10356Debug object can now be used anywhere as a normal object. 10357 10358ResourceTemplate now returns an object of type BUFFER 10359 10360EISAID now returns an object of type INTEGER 10361 10362"Index" now works with a STRING operand 10363 10364"LoadTable" now accepts optional parameters 10365 10366"ToString" length parameter is now optional 10367 10368"Interrupt (ResourceType," parse error fixed. 10369 10370"Register" with a user-defined region space parse error fixed 10371 10372Escaped backslash at the end of a string ("\\") scan/parse error 10373fixed 10374 10375"Revision" is now an object of type INTEGER. 10376 10377 10378 10379------------------------------------------ 10380Summary of changes for this label: 05_02_01 10381 10382Linux: 10383 10384/proc/acpi/event now blocks properly. 10385 10386Removed /proc/sys/acpi. You can still dump your DSDT from 10387/proc/acpi/dsdt. 10388 10389 ACPI CA Core Subsystem: 10390 10391Fixed a problem introduced in the previous label where some of the 10392"small" resource descriptor types were not recognized. 10393 10394Improved error messages for the case where an ASL Field is outside 10395the range of the parent operation region. 10396 10397 ASL Compiler, version X2018: 10398 10399 10400Added error detection for ASL Fields that extend beyond the length 10401of the parent operation region (only if the length of the region 10402is known at compile time.) This includes fields that have a 10403minimum access width that is smaller than the parent region, and 10404individual field units that are partially or entirely beyond the 10405extent of the parent. 10406 10407 10408 10409------------------------------------------ 10410Summary of changes for this label: 04_27_01 10411 10412 ACPI CA Core Subsystem: 10413 10414Fixed a problem where the namespace mutex could be released at the 10415wrong time during execution of AcpiRemoveAddressSpaceHandler. 10416 10417Added optional thread ID output for debug traces, to simplify 10418debugging of multiple threads. Added context switch notification 10419when the debug code realizes that a different thread is now 10420executing ACPI code. 10421 10422Some additional external data types have been prefixed with the 10423string "ACPI_" for consistency. This may effect existing code. 10424The data types affected are the external callback typedefs - e.g., 10425 10426WALK_CALLBACK becomes ACPI_WALK_CALLBACK. 10427 10428 Linux: 10429 10430Fixed an issue with the OSL semaphore implementation where a 10431thread was waking up with an error from receiving a SIGCHLD 10432signal. 10433 10434Linux version of ACPI CA now uses the system C library for string 10435manipulation routines instead of a local implementation. 10436 10437Cleaned up comments and removed TBDs. 10438 10439 ASL Compiler, version X2017: 10440 10441Enhanced error detection and reporting for all file I/O 10442operations. 10443 10444 Documentation: 10445 10446Programmer Reference updated to version 1.06. 10447 10448 10449 10450------------------------------------------ 10451Summary of changes for this label: 04_13_01 10452 10453 ACPI CA Core Subsystem: 10454 10455Restructured support for BufferFields and RegionFields. 10456BankFields support is now fully operational. All known 32-bit 10457limitations on field sizes have been removed. Both BufferFields 10458and (Operation) RegionFields are now supported by the same field 10459management code. 10460 10461Resource support now supports QWORD address and IO resources. The 1046216/32/64 bit address structures and the Extended IRQ structure 10463have been changed to properly handle Source Resource strings. 10464 10465A ThreadId of -1 is now used to indicate a "mutex not acquired" 10466condition internally and must never be returned by AcpiOsThreadId. 10467This reserved value was changed from 0 since Unix systems allow a 10468thread ID of 0. 10469 10470Linux: 10471 10472Driver code reorganized to enhance portability 10473 10474Added a kernel configuration option to control ACPI_DEBUG 10475 10476Fixed the EC driver to honor _GLK. 10477 10478ASL Compiler, version X2016: 10479 10480Fixed support for the "FixedHw" keyword. Previously, the FixedHw 10481address space was set to 0, not 0x7f as it should be. 10482 10483 ------------------------------------------ 10484Summary of changes for this label: 03_13_01 10485 10486 ACPI CA Core Subsystem: 10487 10488During ACPI initialization, the _SB_._INI method is now run if 10489present. 10490 10491Notify handler fix - notifies are deferred until the parent method 10492completes execution. This fixes the "mutex already acquired" 10493issue seen occasionally. 10494 10495Part of the "implicit conversion" rules in ACPI 2.0 have been 10496found to cause compatibility problems with existing ASL/AML. The 10497convert "result-to-target-type" implementation has been removed 10498for stores to method Args and Locals. Source operand conversion 10499is still fully implemented. Possible changes to ACPI 2.0 10500specification pending. 10501 10502Fix to AcpiRsCalculatePciRoutingTableLength to return correct 10503length. 10504 10505Fix for compiler warnings for 64-bit compiles. 10506 10507 Linux: 10508 10509/proc output aligned for easier parsing. 10510 10511Release-version compile problem fixed. 10512 10513New kernel configuration options documented in Configure.help. 10514 10515IBM 600E - Fixed Sleep button may generate "Invalid <NULL> 10516context" message. 10517 10518 OSPM: 10519 10520Power resource driver integrated with bus manager. 10521 10522Fixed kernel fault during active cooling for thermal zones. 10523 10524Source Code: 10525 10526The source code tree has been restructured. 10527 10528 10529 10530------------------------------------------ 10531Summary of changes for this label: 03_02_01 10532 10533 Linux OS Services Layer (OSL): 10534 10535Major revision of all Linux-specific code. 10536 10537Modularized all ACPI-specific drivers. 10538 10539Added new thermal zone and power resource drivers. 10540 10541Revamped /proc interface (new functionality is under /proc/acpi). 10542 10543New kernel configuration options. 10544 10545 Linux known issues: 10546 10547New kernel configuration options not documented in Configure.help 10548yet. 10549 10550 10551Module dependencies not currently implemented. If used, they 10552should be loaded in this order: busmgr, power, ec, system, 10553processor, battery, ac_adapter, button, thermal. 10554 10555Modules will not load if CONFIG_MODVERSION is set. 10556 10557IBM 600E - entering S5 may reboot instead of shutting down. 10558 10559IBM 600E - Sleep button may generate "Invalid <NULL> context" 10560message. 10561 10562Some systems may fail with "execution mutex already acquired" 10563message. 10564 10565 ACPI CA Core Subsystem: 10566 10567Added a new OSL Interface, AcpiOsGetThreadId. This was required 10568for the deadlock detection code. Defined to return a non-zero, 32- 10569bit thread ID for the currently executing thread. May be a non- 10570zero constant integer on single-thread systems. 10571 10572Implemented deadlock detection for internal subsystem mutexes. We 10573may add conditional compilation for this code (debug only) later. 10574 10575ASL/AML Mutex object semantics are now fully supported. This 10576includes multiple acquires/releases by owner and support for the 10577 10578Mutex SyncLevel parameter. 10579 10580A new "Force Release" mechanism automatically frees all ASL 10581Mutexes that have been acquired but not released when a thread 10582exits the interpreter. This forces conformance to the ACPI spec 10583("All mutexes must be released when an invocation exits") and 10584prevents deadlocked ASL threads. This mechanism can be expanded 10585(later) to monitor other resource acquisitions if OEM ASL code 10586continues to misbehave (which it will). 10587 10588Several new ACPI exception codes have been added for the Mutex 10589support. 10590 10591Recursive method calls are now allowed and supported (the ACPI 10592spec does in fact allow recursive method calls.) The number of 10593recursive calls is subject to the restrictions imposed by the 10594SERIALIZED method keyword and SyncLevel (ACPI 2.0) method 10595parameter. 10596 10597Implemented support for the SyncLevel parameter for control 10598methods (ACPI 2.0 feature) 10599 10600Fixed a deadlock problem when multiple threads attempted to use 10601the interpreter. 10602 10603Fixed a problem where the string length of a String package 10604element was not always set in a package returned from 10605AcpiEvaluateObject. 10606 10607Fixed a problem where the length of a String package element was 10608not always included in the length of the overall package returned 10609from AcpiEvaluateObject. 10610 10611Added external interfaces (Acpi*) to the ACPI debug memory 10612manager. This manager keeps a list of all outstanding 10613allocations, and can therefore detect memory leaks and attempts to 10614free memory blocks more than once. Useful for code such as the 10615power manager, etc. May not be appropriate for device drivers. 10616Performance with the debug code enabled is slow. 10617 10618The ACPI Global Lock is now an optional hardware element. 10619 10620 ASL Compiler Version X2015: 10621 10622Integrated changes to allow the compiler to be generated on 10623multiple platforms. 10624 10625Linux makefile added to generate the compiler on Linux 10626 10627 Source Code: 10628 10629All platform-specific headers have been moved to their own 10630subdirectory, Include/Platform. 10631 10632New source file added, Interpreter/ammutex.c 10633 10634New header file, Include/acstruct.h 10635 10636 Documentation: 10637 10638The programmer reference has been updated for the following new 10639interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree 10640 10641 ------------------------------------------ 10642Summary of changes for this label: 02_08_01 10643 10644Core ACPI CA Subsystem: Fixed a problem where an error was 10645incorrectly returned if the return resource buffer was larger than 10646the actual data (in the resource interfaces). 10647 10648References to named objects within packages are resolved to the 10649 10650full pathname string before packages are returned directly (via 10651the AcpiEvaluateObject interface) or indirectly via the resource 10652interfaces. 10653 10654Linux OS Services Layer (OSL): 10655 10656Improved /proc battery interface. 10657 10658 10659Added C-state debugging output and other miscellaneous fixes. 10660 10661ASL Compiler Version X2014: 10662 10663All defined method arguments can now be used as local variables, 10664including the ones that are not actually passed in as parameters. 10665The compiler tracks initialization of the arguments and issues an 10666exception if they are used without prior assignment (just like 10667locals). 10668 10669The -o option now specifies a filename prefix that is used for all 10670output files, including the AML output file. Otherwise, the 10671default behavior is as follows: 1) the AML goes to the file 10672specified in the DSDT. 2) all other output files use the input 10673source filename as the base. 10674 10675 ------------------------------------------ 10676Summary of changes for this label: 01_25_01 10677 10678Core ACPI CA Subsystem: Restructured the implementation of object 10679store support within the interpreter. This includes support for 10680the Store operator as well as any ASL operators that include a 10681target operand. 10682 10683Partially implemented support for Implicit Result-to-Target 10684conversion. This is when a result object is converted on the fly 10685to the type of an existing target object. Completion of this 10686support is pending further analysis of the ACPI specification 10687concerning this matter. 10688 10689CPU-specific code has been removed from the subsystem (hardware 10690directory). 10691 10692New Power Management Timer functions added 10693 10694Linux OS Services Layer (OSL): Moved system state transition code 10695to the core, fixed it, and modified Linux OSL accordingly. 10696 10697Fixed C2 and C3 latency calculations. 10698 10699 10700We no longer use the compilation date for the version message on 10701initialization, but retrieve the version from AcpiGetSystemInfo(). 10702 10703Incorporated for fix Sony VAIO machines. 10704 10705Documentation: The Programmer Reference has been updated and 10706reformatted. 10707 10708 10709ASL Compiler: Version X2013: Fixed a problem where the line 10710numbering and error reporting could get out of sync in the 10711presence of multiple include files. 10712 10713 ------------------------------------------ 10714Summary of changes for this label: 01_15_01 10715 10716Core ACPI CA Subsystem: 10717 10718Implemented support for type conversions in the execution of the 10719ASL Concatenate operator (The second operand is converted to 10720match the type of the first operand before concatenation.) 10721 10722Support for implicit source operand conversion is partially 10723implemented. The ASL source operand types Integer, Buffer, and 10724String are freely interchangeable for most ASL operators and are 10725converted by the interpreter on the fly as required. Implicit 10726Target operand conversion (where the result is converted to the 10727target type before storing) is not yet implemented. 10728 10729Support for 32-bit and 64-bit BCD integers is implemented. 10730 10731Problem fixed where a field read on an aligned field could cause a 10732read past the end of the field. 10733 10734New exception, AE_AML_NO_RETURN_VALUE, is returned when a method 10735does not return a value, but the caller expects one. (The ASL 10736compiler flags this as a warning.) 10737 10738ASL Compiler: 10739 10740Version X2011: 107411. Static typechecking of all operands is implemented. This 10742prevents the use of invalid objects (such as using a Package where 10743an Integer is required) at compile time instead of at interpreter 10744run-time. 107452. The ASL source line is printed with ALL errors and warnings. 107463. Bug fix for source EOF without final linefeed. 107474. Debug option is split into a parse trace and a namespace trace. 107485. Namespace output option (-n) includes initial values for 10749integers and strings. 107506. Parse-only option added for quick syntax checking. 107517. Compiler checks for duplicate ACPI name declarations 10752 10753Version X2012: 107541. Relaxed typechecking to allow interchangeability between 10755strings, integers, and buffers. These types are now converted by 10756the interpreter at runtime. 107572. Compiler reports time taken by each internal subsystem in the 10758debug output file. 10759 10760 10761 ------------------------------------------ 10762Summary of changes for this label: 12_14_00 10763 10764ASL Compiler: 10765 10766This is the first official release of the compiler. Since the 10767compiler requires elements of the Core Subsystem, this label 10768synchronizes everything. 10769 10770------------------------------------------ 10771Summary of changes for this label: 12_08_00 10772 10773 10774Fixed a problem where named references within the ASL definition 10775of both OperationRegions and CreateXXXFields did not work 10776properly. The symptom was an AE_AML_OPERAND_TYPE during 10777initialization of the region/field. This is similar (but not 10778related internally) to the problem that was fixed in the last 10779label. 10780 10781Implemented both 32-bit and 64-bit support for the BCD ASL 10782functions ToBCD and FromBCD. 10783 10784Updated all legal headers to include "2000" in the copyright 10785years. 10786 10787 ------------------------------------------ 10788Summary of changes for this label: 12_01_00 10789 10790Fixed a problem where method invocations within the ASL definition 10791of both OperationRegions and CreateXXXFields did not work 10792properly. The symptom was an AE_AML_OPERAND_TYPE during 10793initialization of the region/field: 10794 10795 nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments 10796[DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s) 10797(0x3005) 10798 10799Fixed a problem where operators with more than one nested 10800subexpression would fail. The symptoms were varied, by mostly 10801AE_AML_OPERAND_TYPE errors. This was actually a rather serious 10802problem that has gone unnoticed until now. 10803 10804 Subtract (Add (1,2), Multiply (3,4)) 10805 10806Fixed a problem where AcpiGetHandle didn't quite get fixed in the 10807previous build (The prefix part of a relative path was handled 10808incorrectly). 10809 10810Fixed a problem where Operation Region initialization failed if 10811the operation region name was a "namepath" instead of a simple 10812"nameseg". Symptom was an AE_NO_OPERAND error. 10813 10814Fixed a problem where an assignment to a local variable via the 10815indirect RefOf mechanism only worked for the first such 10816assignment. Subsequent assignments were ignored. 10817 10818 ------------------------------------------ 10819Summary of changes for this label: 11_15_00 10820 10821ACPI 2.0 table support with backwards support for ACPI 1.0 and the 108220.71 extensions. Note: although we can read ACPI 2.0 BIOS tables, 10823the AML interpreter does NOT have support for the new 2.0 ASL 10824grammar terms at this time. 10825 10826All ACPI hardware access is via the GAS structures in the ACPI 2.0 10827FADT. 10828 10829All physical memory addresses across all platforms are now 64 bits 10830wide. Logical address width remains dependent on the platform 10831(i.e., "void *"). 10832 10833AcpiOsMapMemory interface changed to a 64-bit physical address. 10834 10835The AML interpreter integer size is now 64 bits, as per the ACPI 108362.0 specification. 10837 10838For backwards compatibility with ACPI 1.0, ACPI tables with a 10839revision number less than 2 use 32-bit integers only. 10840 10841Fixed a problem where the evaluation of OpRegion operands did not 10842always resolve them to numbers properly. 10843 10844------------------------------------------ 10845Summary of changes for this label: 10_20_00 10846 10847Fix for CBN_._STA issue. This fix will allow correct access to 10848CBN_ OpRegions when the _STA returns 0x8. 10849 10850Support to convert ACPI constants (Ones, Zeros, One) to actual 10851values before a package object is returned 10852 10853Fix for method call as predicate to if/while construct causing 10854incorrect if/while behavior 10855 10856Fix for Else block package lengths sometimes calculated wrong (if 10857block > 63 bytes) 10858 10859Fix for Processor object length field, was always zero 10860 10861Table load abort if FACP sanity check fails 10862 10863Fix for problem with Scope(name) if name already exists 10864 10865Warning emitted if a named object referenced cannot be found 10866(resolved) during method execution. 10867 10868 10869 10870 10871 10872------------------------------------------ 10873Summary of changes for this label: 9_29_00 10874 10875New table initialization interfaces: AcpiInitializeSubsystem no 10876longer has any parameters AcpiFindRootPointer - Find the RSDP (if 10877necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP- 10878>RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by 10879AcpiLoadTables 10880 10881Note: These interface changes require changes to all existing OSDs 10882 10883The PCI_Config default address space handler is always installed 10884at the root namespace object. 10885 10886------------------------------------------- 10887Summary of changes for this label: 09_15_00 10888 10889The new initialization architecture is implemented. New 10890interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize) 10891AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace 10892 10893(Namespace is automatically loaded when a table is loaded) 10894 10895The ACPI_OPERAND_OBJECT has been optimized to shrink its size from 1089652 bytes to 32 bytes. There is usually one of these for every 10897namespace object, so the memory savings is significant. 10898 10899Implemented just-in-time evaluation of the CreateField operators. 10900 10901Bug fixes for IA-64 support have been integrated. 10902 10903Additional code review comments have been implemented 10904 10905The so-called "third pass parse" has been replaced by a final walk 10906through the namespace to initialize all operation regions (address 10907spaces) and fields that have not yet been initialized during the 10908execution of the various _INI and REG methods. 10909 10910New file - namespace/nsinit.c 10911 10912------------------------------------------- 10913Summary of changes for this label: 09_01_00 10914 10915Namespace manager data structures have been reworked to change the 10916primary object from a table to a single object. This has 10917resulted in dynamic memory savings of 3X within the namespace and 109182X overall in the ACPI CA subsystem. 10919 10920Fixed problem where the call to AcpiEvFindPciRootBuses was 10921inadvertently left commented out. 10922 10923Reduced the warning count when generating the source with the GCC 10924compiler. 10925 10926Revision numbers added to each module header showing the 10927SourceSafe version of the file. Please refer to this version 10928number when giving us feedback or comments on individual modules. 10929 10930The main object types within the subsystem have been renamed to 10931clarify their purpose: 10932 10933ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT 10934ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT 10935ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE 10936 10937NOTE: no changes to the initialization sequence are included in 10938this label. 10939 10940------------------------------------------- 10941Summary of changes for this label: 08_23_00 10942 10943Fixed problem where TerminateControlMethod was being called 10944multiple times per method 10945 10946Fixed debugger problem where single stepping caused a semaphore to 10947be oversignalled 10948 10949Improved performance through additional parse object caching - 10950added ACPI_EXTENDED_OP type 10951 10952------------------------------------------- 10953Summary of changes for this label: 08_10_00 10954 10955Parser/Interpreter integration: Eliminated the creation of 10956complete parse trees for ACPI tables and control methods. 10957Instead, parse subtrees are created and then deleted as soon as 10958they are processed (Either entered into the namespace or executed 10959by the interpreter). This reduces the use of dynamic kernel 10960memory significantly. (about 10X) 10961 10962Exception codes broken into classes and renumbered. Be sure to 10963recompile all code that includes acexcep.h. Hopefully we won't 10964have to renumber the codes again now that they are split into 10965classes (environment, programmer, AML code, ACPI table, and 10966internal). 10967 10968Fixed some additional alignment issues in the Resource Manager 10969subcomponent 10970 10971Implemented semaphore tracking in the AcpiExec utility, and fixed 10972several places where mutexes/semaphores were being unlocked 10973without a corresponding lock operation. There are no known 10974semaphore or mutex "leaks" at this time. 10975 10976Fixed the case where an ASL Return operator is used to return an 10977unnamed package. 10978 10979------------------------------------------- 10980Summary of changes for this label: 07_28_00 10981 10982Fixed a problem with the way addresses were calculated in 10983AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem 10984manifested itself when a Field was created with WordAccess or 10985DwordAccess, but the field unit defined within the Field was less 10986 10987than a Word or Dword. 10988 10989Fixed a problem in AmlDumpOperands() module's loop to pull 10990operands off of the operand stack to display information. The 10991problem manifested itself as a TLB error on 64-bit systems when 10992accessing an operand stack with two or more operands. 10993 10994Fixed a problem with the PCI configuration space handlers where 10995context was getting confused between accesses. This required a 10996change to the generic address space handler and address space 10997setup definitions. Handlers now get both a global handler context 10998(this is the one passed in by the user when executing 10999AcpiInstallAddressSpaceHandler() and a specific region context 11000that is unique to each region (For example, the _ADR, _SEG and 11001_BBN values associated with a specific region). The generic 11002function definitions have changed to the following: 11003 11004typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function, 11005UINT32 Address, UINT32 BitWidth, UINT32 *Value, void 11006*HandlerContext, // This used to be void *Context void 11007*RegionContext); // This is an additional parameter 11008 11009typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE 11010RegionHandle, UINT32 Function, void *HandlerContext, void 11011**RegionContext); // This used to be **ReturnContext 11012 11013------------------------------------------- 11014Summary of changes for this label: 07_21_00 11015 11016Major file consolidation and rename. All files within the 11017interpreter have been renamed as well as most header files. This 11018was done to prevent collisions with existing files in the host 11019OSs -- filenames such as "config.h" and "global.h" seem to be 11020quite common. The VC project files have been updated. All 11021makefiles will require modification. 11022 11023The parser/interpreter integration continues in Phase 5 with the 11024implementation of a complete 2-pass parse (the AML is parsed 11025twice) for each table; This avoids the construction of a huge 11026parse tree and therefore reduces the amount of dynamic memory 11027required by the subsystem. Greater use of the parse object cache 11028means that performance is unaffected. 11029 11030Many comments from the two code reviews have been rolled in. 11031 11032The 64-bit alignment support is complete. 11033 11034------------------------------------------- 11035Summary of changes for this label: 06_30_00 11036 11037With a nod and a tip of the hat to the technology of yesteryear, 11038we've added support in the source code for 80 column output 11039devices. The code is now mostly constrained to 80 columns or 11040less to support environments and editors that 1) cannot display 11041or print more than 80 characters on a single line, and 2) cannot 11042disable line wrapping. 11043 11044A major restructuring of the namespace data structure has been 11045completed. The result is 1) cleaner and more 11046understandable/maintainable code, and 2) a significant reduction 11047in the dynamic memory requirement for each named ACPI object 11048(almost half). 11049 11050------------------------------------------- 11051Summary of changes for this label: 06_23_00 11052 11053Linux support has been added. In order to obtain approval to get 11054the ACPI CA subsystem into the Linux kernel, we've had to make 11055quite a few changes to the base subsystem that will affect all 11056users (all the changes are generic and OS- independent). The 11057effects of these global changes have been somewhat far reaching. 11058Files have been merged and/or renamed and interfaces have been 11059renamed. The major changes are described below. 11060 11061Osd* interfaces renamed to AcpiOs* to eliminate namespace 11062pollution/confusion within our target kernels. All OSD 11063interfaces must be modified to match the new naming convention. 11064 11065Files merged across the subsystem. A number of the smaller source 11066and header files have been merged to reduce the file count and 11067increase the density of the existing files. There are too many 11068to list here. In general, makefiles that call out individual 11069files will require rebuilding. 11070 11071Interpreter files renamed. All interpreter files now have the 11072prefix am* instead of ie* and is*. 11073 11074Header files renamed: The acapi.h file is now acpixf.h. The 11075acpiosd.h file is now acpiosxf.h. We are removing references to 11076the acronym "API" since it is somewhat windowsy. The new name is 11077"external interface" or xface or xf in the filenames.j 11078 11079 11080All manifest constants have been forced to upper case (some were 11081mixed case.) Also, the string "ACPI_" has been prepended to many 11082(not all) of the constants, typedefs, and structs. 11083 11084The globals "DebugLevel" and "DebugLayer" have been renamed 11085"AcpiDbgLevel" and "AcpiDbgLayer" respectively. 11086 11087All other globals within the subsystem are now prefixed with 11088"AcpiGbl_" Internal procedures within the subsystem are now 11089prefixed with "Acpi" (with only a few exceptions). The original 11090two-letter abbreviation for the subcomponent remains after "Acpi" 11091- for example, CmCallocate became AcpiCmCallocate. 11092 11093Added a source code translation/conversion utility. Used to 11094generate the Linux source code, it can be modified to generate 11095other types of source as well. Can also be used to cleanup 11096existing source by removing extraneous spaces and blank lines. 11097Found in tools/acpisrc/* 11098 11099OsdUnMapMemory was renamed to OsdUnmapMemory and then 11100AcpiOsUnmapMemory. (UnMap became Unmap). 11101 11102A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore. 11103When set to one, this indicates that the caller wants to use the 11104 11105semaphore as a mutex, not a counting semaphore. ACPI CA uses 11106both types. However, implementers of this call may want to use 11107different OS primitives depending on the type of semaphore 11108requested. For example, some operating systems provide separate 11109 11110"mutex" and "semaphore" interfaces - where the mutex interface is 11111much faster because it doesn't have all the overhead of a full 11112semaphore implementation. 11113 11114Fixed a deadlock problem where a method that accesses the PCI 11115address space can block forever if it is the first access to the 11116space. 11117 11118------------------------------------------- 11119Summary of changes for this label: 06_02_00 11120 11121Support for environments that cannot handle unaligned data 11122accesses (e.g. firmware and OS environments devoid of alignment 11123handler technology namely SAL/EFI and the IA-64 Linux kernel) has 11124been added (via configurable macros) in these three areas: - 11125Transfer of data from the raw AML byte stream is done via byte 11126moves instead of word/dword/qword moves. - External objects are 11127aligned within the user buffer, including package elements (sub- 11128objects). - Conversion of name strings to UINT32 Acpi Names is now 11129done byte-wise. 11130 11131The Store operator was modified to mimic Microsoft's 11132implementation when storing to a Buffer Field. 11133 11134Added a check of the BM_STS bit before entering C3. 11135 11136The methods subdirectory has been obsoleted and removed. A new 11137file, cmeval.c subsumes the functionality. 11138 11139A 16-bit (DOS) version of AcpiExec has been developed. The 11140makefile is under the acpiexec directory. 11141