changes.txt revision 243347
1---------------------------------------- 214 November 2012. Summary of changes for version 20121114: 3 4This release is available at https://www.acpica.org/downloads 5The ACPI 5.0 specification is available at www.acpi.info 6 71) ACPICA Kernel-resident Subsystem: 8 9Implemented a performance enhancement for ACPI/AML Package objects. This 10change greatly increases the performance of Package objects within the 11interpreter. It changes the processing of reference counts for packages by 12optimizing for the most common case where the package sub-objects are 13either Integers, Strings, or Buffers. Increases the overall performance of 14the ASLTS test suite by 1.5X (Increases the Slack Mode performance by 2X.) 15Chao Guan. ACPICA BZ 943. 16 17Implemented and deployed common macros to extract flag bits from resource 18descriptors. Improves readability and maintainability of the code. Fixes a 19problem with the UART serial bus descriptor for the number of data bits 20flags (was incorrectly 2 bits, should be 3). 21 22Enhanced the ACPI_GETx and ACPI_SETx macros. Improved the implementation 23of the macros and changed the SETx macros to the style of (destination, 24source). Also added ACPI_CASTx companion macros. Lv Zheng. 25 26Example Code and Data Size: These are the sizes for the OS-independent 27acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 28debug version of the code includes the debug output trace mechanism and 29has a much larger code and data size. 30 31 Previous Release: 32 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total 33 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 34 Current Release: 35 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total 36 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 37 38 392) iASL Compiler/Disassembler and Tools: 40 41Disassembler: Added the new ACPI 5.0 interrupt sharing flags. This change 42adds the ShareAndWake and ExclusiveAndWake flags which were added to the 43Irq, Interrupt, and Gpio resource descriptors in ACPI 5.0. ACPICA BZ 986. 44 45Disassembler: Fixed a problem with external declaration generation. Fixes 46a problem where an incorrect pathname could be generated for an external 47declaration if the original reference to the object includes leading 48carats (^). ACPICA BZ 984. 49 50Debugger: Completed a major update for the Disassemble<method> command. 51This command was out-of-date and did not properly disassemble control 52methods that had any reasonable complexity. This fix brings the command up 53to the same level as the rest of the disassembler. Adds one new file, 54dmdeferred.c, which is existing code that is now common with the main 55disassembler and the debugger disassemble command. ACPICA MZ 978. 56 57iASL: Moved the parser entry prototype to avoid a duplicate declaration. 58Newer versions of Bison emit this prototype, so moved the prototype out of 59the iASL header to where it is actually used in order to avoid a duplicate 60declaration. 61 62iASL/Tools: Standardized use of the stream I/O functions: 63 1) Ensure check for I/O error after every fopen/fread/fwrite 64 2) Ensure proper order of size/count arguments for fread/fwrite 65 3) Use test of (Actual != Requested) after all fwrite, and most fread 66 4) Standardize I/O error messages 67Improves reliability and maintainability of the code. Bob Moore, Lv Zheng. 68ACPICA BZ 981. 69 70Disassembler: Prevent duplicate External() statements. During generation 71of external statements, detect similar pathnames that are actually 72duplicates such as these: 73 External (\ABCD) 74 External (ABCD) 75Remove all leading '\' characters from pathnames during the external 76statement generation so that duplicates will be detected and tossed. 77ACPICA BZ 985. 78 79Tools: Replace low-level I/O with stream I/O functions. Replace 80open/read/write/close with the stream I/O equivalents 81fopen/fread/fwrite/fclose for portability and performance. Lv Zheng, Bob 82Moore. 83 84AcpiBin: Fix for the dump-to-hex function. Now correctly output the table 85name header so that AcpiXtract recognizes the output file/table. 86 87iASL: Remove obsolete -2 option flag. Originally intended to force the 88compiler/disassembler into an ACPI 2.0 mode, this was never implemented 89and the entire concept is now obsolete. 90 91---------------------------------------- 9218 October 2012. Summary of changes for version 20121018: 93 94 951) ACPICA Kernel-resident Subsystem: 96 97Updated support for the ACPI 5.0 MPST table. Fixes some problems 98introduced by late changes to the table as it was added to the ACPI 5.0 99specification. Includes header, disassembler, and data table compiler 100support as well as a new version of the MPST template. 101 102AcpiGetObjectInfo: Enhanced the device object support to include the ACPI 1035.0 _SUB method. Now calls _SUB in addition to the other PNP-related ID 104methods: _HID, _CID, and _UID. 105 106Changed ACPI_DEVICE_ID to ACPI_PNP_DEVICE_ID. Also changed 107ACPI_DEVICE_ID_LIST to ACPI_PNP_DEVICE_ID_LIST. These changes prevent 108name collisions on hosts that reserve the *_DEVICE_ID (or *DeviceId) 109names for their various drivers. Affects the AcpiGetObjectInfo external 110interface, and other internal interfaces as well. 111 112Added and deployed a new macro for ACPI_NAME management: ACPI_MOVE_NAME. 113This macro resolves to a simple 32-bit move of the 4-character ACPI_NAME 114on machines that support non-aligned transfers. Optimizes for this case 115rather than using a strncpy. With assistance from Zheng Lv. 116 117Resource Manager: Small fix for buffer size calculation. Fixed a one byte 118error in the output buffer calculation. Feng Tang. ACPICA BZ 849. 119 120Added a new debug print message for AML mutex objects that are force- 121released. At control method termination, any currently acquired mutex 122objects are force-released. Adds a new debug-only message for each one 123that is released. 124 125Audited/updated all ACPICA return macros and the function debug depth 126counter: 1) Ensure that all functions that use the various TRACE macros 127also use the appropriate ACPICA return macros. 2) Ensure that all normal 128return statements surround the return expression (value) with parens to 129ensure consistency across the ACPICA code base. Guan Chao, Tang Feng, 130Zheng Lv, Bob Moore. ACPICA Bugzilla 972. 131 132Global source code changes/maintenance: All extra lines at the start and 133end of each source file have been removed for consistency. Also, within 134comments, all new sentences start with a single space instead of a double 135space, again for consistency across the code base. 136 137Example Code and Data Size: These are the sizes for the OS-independent 138acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 139debug version of the code includes the debug output trace mechanism and 140has a much larger code and data size. 141 142 Previous Release: 143 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total 144 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total 145 Current Release: 146 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total 147 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 148 149 1502) iASL Compiler/Disassembler and Tools: 151 152AcpiExec: Improved the algorithm used for memory leak/corruption 153detection. Added some intelligence to the code that maintains the global 154list of allocated memory. The list is now ordered by allocated memory 155address, significantly improving performance. When running AcpiExec on 156the ASLTS test suite, speed improvements of 3X to 5X are seen, depending 157on the platform and/or the environment. Note, this performance 158enhancement affects the AcpiExec utility only, not the kernel-resident 159ACPICA code. 160 161Enhanced error reporting for invalid AML opcodes and bad ACPI_NAMEs. For 162the disassembler, dump the 48 bytes surrounding the invalid opcode. Fix 163incorrect table offset reported for invalid opcodes. Report the original 16432-bit value for bad ACPI_NAMEs (as well as the repaired name.) 165 166Disassembler: Enhanced the -vt option to emit the binary table data in 167hex format to assist with debugging. 168 169Fixed a potential filename buffer overflow in osunixdir.c. Increased the 170size of file structure. Colin Ian King. 171 172---------------------------------------- 17313 September 2012. Summary of changes for version 20120913: 174 175 1761) ACPICA Kernel-resident Subsystem: 177 178ACPI 5.0: Added two new notify types for the Hardware Error Notification 179Structure within the Hardware Error Source Table (HEST) table -- CMCI(5) 180and 181MCE(6). 182 183Table Manager: Merged/removed duplicate code in the root table resize 184functions. One function is external, the other is internal. Lv Zheng, 185ACPICA 186BZ 846. 187 188Makefiles: Completely removed the obsolete "Linux" makefiles under 189acpica/generate/linux. These makefiles are obsolete and have been replaced 190by 191the generic unix makefiles under acpica/generate/unix. 192 193Makefiles: Ensure that binary files always copied properly. Minor rule 194change 195to ensure that the final binary output files are always copied up to the 196appropriate binary directory (bin32 or bin64.) 197 198Example Code and Data Size: These are the sizes for the OS-independent 199acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 200debug 201version of the code includes the debug output trace mechanism and has a 202much 203larger code and data size. 204 205 Previous Release: 206 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total 207 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total 208 Current Release: 209 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total 210 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total 211 212 2132) iASL Compiler/Disassembler and Tools: 214 215Disassembler: Fixed a possible fault during the disassembly of resource 216descriptors when a second parse is required because of the invocation of 217external control methods within the table. With assistance from 218adq@lidskialf.net. ACPICA BZ 976. 219 220iASL: Fixed a namepath optimization problem. An error can occur if the 221parse 222node that contains the namepath to be optimized does not have a parent 223node 224that is a named object. This change fixes the problem. 225 226iASL: Fixed a regression where the AML file is not deleted on errors. The 227AML 228output file should be deleted if there are any errors during the compiler. 229The 230only exception is if the -f (force output) option is used. ACPICA BZ 974. 231 232iASL: Added a feature to automatically increase internal line buffer 233sizes. 234Via realloc(), automatically increase the internal line buffer sizes as 235necessary to support very long source code lines. The current version of 236the 237preprocessor requires a buffer long enough to contain full source code 238lines. 239This change increases the line buffer(s) if the input lines go beyond the 240current buffer size. This eliminates errors that occurred when a source 241code 242line was longer than the buffer. 243 244iASL: Fixed a problem with constant folding in method declarations. The 245SyncLevel term is a ByteConstExpr, and incorrect code would be generated 246if a 247Type3 opcode was used. 248 249Debugger: Improved command help support. For incorrect argument count, 250display 251full help for the command. For help command itself, allow an argument to 252specify a command. 253 254Test Suites: Several bug fixes for the ASLTS suite reduces the number of 255errors during execution of the suite. Guan Chao. 256 257---------------------------------------- 25816 August 2012. Summary of changes for version 20120816: 259 260 2611) ACPICA Kernel-resident Subsystem: 262 263Removed all use of the deprecated _GTS and _BFS predefined methods. The 264_GTS 265(Going To Sleep) and _BFS (Back From Sleep) methods are essentially 266deprecated and will probably be removed from the ACPI specification. 267Windows 268does not invoke them, and reportedly never will. The final nail in the 269coffin 270is that the ACPI specification states that these methods must be run with 271interrupts off, which is not going to happen in a kernel interpreter. 272Note: 273Linux has removed all use of the methods also. It was discovered that 274invoking these functions caused failures on some machines, probably 275because 276they were never tested since Windows does not call them. Affects two 277external 278interfaces, AcpiEnterSleepState and AcpiLeaveSleepStatePrep. Tang Feng. 279ACPICA BZ 969. 280 281Implemented support for complex bit-packed buffers returned from the _PLD 282(Physical Location of Device) predefined method. Adds a new external 283interface, AcpiDecodePldBuffer that parses the buffer into a more usable C 284structure. Note: C Bitfields cannot be used for this type of predefined 285structure since the memory layout of individual bitfields is not defined 286by 287the C language. In addition, there are endian concerns where a compiler 288will 289change the bitfield ordering based on the machine type. The new ACPICA 290interface eliminates these issues, and should be called after _PLD is 291executed. ACPICA BZ 954. 292 293Implemented a change to allow a scope change to root (via "Scope (\)") 294during 295execution of module-level ASL code (code that is executed at table load 296time.) Lin Ming. 297 298Added the Windows8/Server2012 string for the _OSI method. This change adds 299a 300new _OSI string, "Windows 2012" for both Windows 8 and Windows Server 3012012. 302 303Added header support for the new ACPI tables DBG2 (Debug Port Table Type 3042) 305and CSRT (Core System Resource Table). 306 307Added struct header support for the _FDE, _GRT, _GTM, and _SRT predefined 308names. This simplifies access to the buffers returned by these predefined 309names. Adds a new file, include/acbuffer.h. ACPICA BZ 956. 310 311GPE support: Removed an extraneous parameter from the various low-level 312internal GPE functions. Tang Feng. 313 314Removed the linux makefiles from the unix packages. The generate/linux 315makefiles are obsolete and have been removed from the unix tarball release 316packages. The replacement makefiles are under generate/unix, and there is 317a 318top-level makefile under the main acpica directory. ACPICA BZ 967, 912. 319 320Updates for Unix makefiles: 3211) Add -D_FORTIFY_SOURCE=2 for gcc generation. Arjan van de Ven. 3222) Update linker flags (move to end of command line) for AcpiExec utility. 323Guan Chao. 324 325Split ACPICA initialization functions to new file, utxfinit.c. Split from 326utxface.c to improve modularity and reduce file size. 327 328Example Code and Data Size: These are the sizes for the OS-independent 329acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 330debug version of the code includes the debug output trace mechanism and 331has a 332much larger code and data size. 333 334 Previous Release: 335 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total 336 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total 337 Current Release: 338 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total 339 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total 340 341 3422) iASL Compiler/Disassembler and Tools: 343 344iASL: Fixed a problem with constant folding for fixed-length constant 345expressions. The constant-folding code was not being invoked for constant 346expressions that allow the use of type 3/4/5 opcodes to generate constants 347for expressions such as ByteConstExpr, WordConstExpr, etc. This could 348result 349in the generation of invalid AML bytecode. ACPICA BZ 970. 350 351iASL: Fixed a generation issue on newer versions of Bison. Newer versions 352apparently automatically emit some of the necessary externals. This change 353handles these versions in order to eliminate generation warnings. 354 355Disassembler: Added support to decode the DBG2 and CSRT ACPI tables. 356 357Disassembler: Add support to decode _PLD buffers. The decoded buffer 358appears 359within comments in the output file. 360 361Debugger: Fixed a regression with the "Threads" command where 362AE_BAD_PARAMETER was always returned. 363 364---------------------------------------- 36511 July 2012. Summary of changes for version 20120711: 366 3671) ACPICA Kernel-resident Subsystem: 368 369Fixed a possible fault in the return package object repair code. Fixes a 370problem that can occur when a lone package object is wrapped with an outer 371package object in order to force conformance to the ACPI specification. 372Can 373affect these predefined names: _ALR, _MLS, _PSS, _TRT, _TSS, _PRT, _HPX, 374_DLM, 375_CSD, _PSD, _TSD. 376 377Removed code to disable/enable bus master arbitration (ARB_DIS bit in the 378PM2_CNT register) in the ACPICA sleep/wake interfaces. Management of the 379ARB_DIS bit must be implemented in the host-dependent C3 processor power 380state 381support. Note, ARB_DIS is obsolete and only applies to older chipsets, 382both 383Intel and other vendors. (for Intel: ICH4-M and earlier) 384 385This change removes the code to disable/enable bus master arbitration 386during 387suspend/resume. Use of the ARB_DIS bit in the optional PM2_CNT register 388causes 389resume problems on some machines. The change has been in use for over 390seven 391years within Linux. 392 393Implemented two new external interfaces to support host-directed dynamic 394ACPI 395table load and unload. They are intended to simplify the host 396implementation 397of hot-plug support: 398 AcpiLoadTable: Load an SSDT from a buffer into the namespace. 399 AcpiUnloadParentTable: Unload an SSDT via a named object owned by the 400table. 401See the ACPICA reference for additional details. Adds one new file, 402components/tables/tbxfload.c 403 404Implemented and deployed two new interfaces for errors and warnings that 405are 406known to be caused by BIOS/firmware issues: 407 AcpiBiosError: Prints "ACPI Firmware Error" message. 408 AcpiBiosWarning: Prints "ACPI Firmware Warning" message. 409Deployed these new interfaces in the ACPICA Table Manager code for ACPI 410table 411and FADT errors. Additional deployment to be completed as appropriate in 412the 413future. The associated conditional macros are ACPI_BIOS_ERROR and 414ACPI_BIOS_WARNING. See the ACPICA reference for additional details. ACPICA 415BZ 416843. 417 418Implicit notify support: ensure that no memory allocation occurs within a 419critical region. This fix moves a memory allocation outside of the time 420that a 421spinlock is held. Fixes issues on systems that do not allow this behavior. 422Jung-uk Kim. 423 424Split exception code utilities and tables into a new file, 425utilities/utexcep.c 426 427Example Code and Data Size: These are the sizes for the OS-independent 428acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 429debug 430version of the code includes the debug output trace mechanism and has a 431much 432larger code and data size. 433 434 Previous Release: 435 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total 436 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total 437 Current Release: 438 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total 439 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total 440 441 4422) iASL Compiler/Disassembler and Tools: 443 444iASL: Fixed a parser problem for hosts where EOF is defined as -1 instead 445of 4460. Jung-uk Kim. 447 448Debugger: Enhanced the "tables" command to emit additional information 449about 450the current set of ACPI tables, including the owner ID and flags decode. 451 452Debugger: Reimplemented the "unload" command to use the new 453AcpiUnloadParentTable external interface. This command was disable 454previously 455due to need for an unload interface. 456 457AcpiHelp: Added a new option to decode ACPICA exception codes. The -e 458option 459will decode 16-bit hex status codes (ACPI_STATUS) to name strings. 460 461---------------------------------------- 46220 June 2012. Summary of changes for version 20120620: 463 464 4651) ACPICA Kernel-resident Subsystem: 466 467Implemented support to expand the "implicit notify" feature to allow 468multiple 469devices to be notified by a single GPE. This feature automatically 470generates a 471runtime device notification in the absence of a BIOS-provided GPE control 472method (_Lxx/_Exx) or a host-installed handler for the GPE. Implicit 473notify is 474provided by ACPICA for Windows compatibility, and is a workaround for BIOS 475AML 476code errors. See the description of the AcpiSetupGpeForWake interface in 477the 478APCICA reference. Bob Moore, Rafael Wysocki. ACPICA BZ 918. 479 480Changed some comments and internal function names to simplify and ensure 481correctness of the Linux code translation. No functional changes. 482 483Example Code and Data Size: These are the sizes for the OS-independent 484acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 485debug 486version of the code includes the debug output trace mechanism and has a 487much 488larger code and data size. 489 490 Previous Release: 491 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total 492 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total 493 Current Release: 494 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total 495 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total 496 497 4982) iASL Compiler/Disassembler and Tools: 499 500Disassembler: Added support to emit short, commented descriptions for the 501ACPI 502predefined names in order to improve the readability of the disassembled 503output. ACPICA BZ 959. Changes include: 504 1) Emit descriptions for all standard predefined names (_INI, _STA, 505_PRW, 506etc.) 507 2) Emit generic descriptions for the special names (_Exx, _Qxx, etc.) 508 3) Emit descriptions for the resource descriptor names (_MIN, _LEN, 509etc.) 510 511AcpiSrc: Fixed several long-standing Linux code translation issues. 512Argument 513descriptions in function headers are now translated properly to lower case 514and 515underscores. ACPICA BZ 961. Also fixes translation problems such as these: 516(old -> new) 517 i_aSL -> iASL 518 00-7_f -> 00-7F 519 16_k -> 16K 520 local_fADT -> local_FADT 521 execute_oSI -> execute_OSI 522 523iASL: Fixed a problem where null bytes were inadvertently emitted into 524some 525listing files. 526 527iASL: Added the existing debug options to the standard help screen. There 528are 529no longer two different help screens. ACPICA BZ 957. 530 531AcpiHelp: Fixed some typos in the various predefined name descriptions. 532Also 533expand some of the descriptions where appropriate. 534 535iASL: Fixed the -ot option (display compile times/statistics). Was not 536working 537properly for standard output; only worked for the debug file case. 538 539---------------------------------------- 54018 May 2012. Summary of changes for version 20120518: 541 542 5431) ACPICA Core Subsystem: 544 545Added a new OSL interface, AcpiOsWaitEventsComplete. This interface is 546defined 547to block until asynchronous events such as notifies and GPEs have 548completed. 549Within ACPICA, it is only called before a notify or GPE handler is 550removed/uninstalled. It also may be useful for the host OS within related 551drivers such as the Embedded Controller driver. See the ACPICA reference 552for 553additional information. ACPICA BZ 868. 554 555ACPI Tables: Added a new error message for a possible overflow failure 556during 557the conversion of FADT 32-bit legacy register addresses to internal common 55864- 559bit GAS structure representation. The GAS has a one-byte "bit length" 560field, 561thus limiting the register length to 255 bits. ACPICA BZ 953. 562 563Example Code and Data Size: These are the sizes for the OS-independent 564acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 565debug 566version of the code includes the debug output trace mechanism and has a 567much 568larger code and data size. 569 570 Previous Release: 571 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 572 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total 573 Current Release: 574 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total 575 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total 576 577 5782) iASL Compiler/Disassembler and Tools: 579 580iASL: Added the ACPI 5.0 "PCC" keyword for use in the Register() ASL 581macro. 582This keyword was added late in the ACPI 5.0 release cycle and was not 583implemented until now. 584 585Disassembler: Added support for Operation Region externals. Adds missing 586support for operation regions that are defined in another table, and 587referenced locally via a Field or BankField ASL operator. Now generates 588the 589correct External statement. 590 591Disassembler: Several additional fixes for the External() statement 592generation 593related to some ASL operators. Also, order the External() statements 594alphabetically in the disassembler output. Fixes the External() generation 595for 596the Create* field, Alias, and Scope operators: 597 1) Create* buffer field operators - fix type mismatch warning on 598disassembly 599 2) Alias - implement missing External support 600 3) Scope - fix to make sure all necessary externals are emitted. 601 602iASL: Improved pathname support. For include files, merge the prefix 603pathname 604with the file pathname and eliminate unnecessary components. Convert 605backslashes in all pathnames to forward slashes, for readability. Include 606file 607pathname changes affect both #include and Include() type operators. 608 609iASL/DTC/Preprocessor: Gracefully handle early EOF. Handle an EOF at the 610end 611of a valid line by inserting a newline and then returning the EOF during 612the 613next call to GetNextLine. Prevents the line from being ignored due to EOF 614condition. 615 616iASL: Implemented some changes to enhance the IDE support (-vi option.) 617Error 618and Warning messages are now correctly recognized for both the source code 619browser and the global error and warning counts. 620 621---------------------------------------- 62220 April 2012. Summary of changes for version 20120420: 623 624 6251) ACPICA Core Subsystem: 626 627Implemented support for multiple notify handlers. This change adds support 628to 629allow multiple system and device notify handlers on Device, Thermal Zone, 630and 631Processor objects. This can simplify the host OS notification 632implementation. 633Also re-worked and restructured the entire notify support code to simplify 634handler installation, handler removal, notify event queuing, and notify 635dispatch to handler(s). Note: there can still only be two global notify 636handlers - one for system notifies and one for device notifies. There are 637no 638changes to the existing handler install/remove interfaces. Lin Ming, Bob 639Moore, Rafael Wysocki. 640 641Fixed a regression in the package repair code where the object reference 642count was calculated incorrectly. Regression was introduced in the commit 643"Support to add Package wrappers". 644 645Fixed a couple possible memory leaks in the AML parser, in the error 646recovery 647path. Jesper Juhl, Lin Ming. 648 649Example Code and Data Size: These are the sizes for the OS-independent 650acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 651debug version of the code includes the debug output trace mechanism and 652has a 653much larger code and data size. 654 655 Previous Release: 656 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 657 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 658 Current Release: 659 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 660 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total 661 662 6632) iASL Compiler/Disassembler and Tools: 664 665iASL: Fixed a problem with the resource descriptor support where the 666length 667of the StartDependentFn and StartDependentFnNoPrio descriptors were not 668included in cumulative descriptor offset, resulting in incorrect values 669for 670resource tags within resource descriptors appearing after a 671StartDependent* 672descriptor. Reported by Petr Vandrovec. ACPICA BZ 949. 673 674iASL and Preprocessor: Implemented full support for the #line directive to 675correctly track original source file line numbers through the .i 676preprocessor 677output file - for error and warning messages. 678 679iASL: Expand the allowable byte constants for address space IDs. 680Previously, 681the allowable range was 0x80-0xFF (user-defined spaces), now the range is 6820x0A-0xFF to allow for custom and new IDs without changing the compiler. 683 684iASL: Add option to treat all warnings as errors (-we). ACPICA BZ 948. 685 686iASL: Add option to completely disable the preprocessor (-Pn). 687 688iASL: Now emit all error/warning messages to standard error (stderr) by 689default (instead of the previous stdout). 690 691ASL Test Suite (ASLTS): Reduce iASL warnings due to use of Switch(). 692Update 693for resource descriptor offset fix above. Update/cleanup error output 694routines. Enable and send iASL errors/warnings to an error logfile 695(error.txt). Send all other iASL output to a logfile (compiler.txt). Fixed 696several extraneous "unrecognized operator" messages. 697 698---------------------------------------- 69920 March 2012. Summary of changes for version 20120320: 700 701 7021) ACPICA Core Subsystem: 703 704Enhanced the sleep/wake interfaces to optionally execute the _GTS method 705(Going To Sleep) and the _BFS method (Back From Sleep). Windows apparently 706does not execute these methods, and therefore these methods are often 707untested. It has been seen on some systems where the execution of these 708methods causes errors and also prevents the machine from entering S5. It 709is 710therefore suggested that host operating systems do not execute these 711methods 712by default. In the future, perhaps these methods can be optionally 713executed 714based on the age of the system and/or what is the newest version of 715Windows 716that the BIOS asks for via _OSI. Changed interfaces: AcpiEnterSleepState 717and 718AcpileaveSleepStatePrep. See the ACPICA reference and Linux BZ 13041. Lin 719Ming. 720 721Fixed a problem where the length of the local/common FADT was set too 722early. 723The local FADT table length cannot be set to the common length until the 724original length has been examined. There is code that checks the table 725length 726and sets various fields appropriately. This can affect older machines with 727early FADT versions. For example, this can cause inadvertent writes to the 728CST_CNT register. Julian Anastasov. 729 730Fixed a mapping issue related to a physical table override. Use the 731deferred 732mapping mechanism for tables loaded via the physical override OSL 733interface. 734This allows for early mapping before the virtual memory manager is 735available. 736Thomas Renninger, Bob Moore. 737 738Enhanced the automatic return-object repair code: Repair a common problem 739with 740predefined methods that are defined to return a variable-length Package of 741sub-objects. If there is only one sub-object, some BIOS ASL code 742mistakenly 743simply returns the single object instead of a Package with one sub-object. 744This new support will repair this error by wrapping a Package object 745around 746the original object, creating the correct and expected Package with one 747sub- 748object. Names that can be repaired in this manner include: _ALR, _CSD, 749_HPX, 750_MLS, _PLD, _PRT, _PSS, _TRT, _TSS, _BCL, _DOD, _FIX, and _Sx. ACPICA BZ 751939. 752 753Changed the exception code returned for invalid ACPI paths passed as 754parameters to external interfaces such as AcpiEvaluateObject. Was 755AE_BAD_PARAMETER, now is the more sensible AE_BAD_PATHNAME. 756 757Example Code and Data Size: These are the sizes for the OS-independent 758acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 759debug 760version of the code includes the debug output trace mechanism and has a 761much 762larger code and data size. 763 764 Previous Release: 765 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total 766 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 767 Current Release: 768 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 769 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 770 771 7722) iASL Compiler/Disassembler and Tools: 773 774iASL: Added the infrastructure and initial implementation of a integrated 775C- 776like preprocessor. This will simplify BIOS development process by 777eliminating 778the need for a separate preprocessing step during builds. On Windows, it 779also 780eliminates the need to install a separate C compiler. ACPICA BZ 761. Some 781features including full #define() macro support are still under 782development. 783These preprocessor directives are supported: 784 #define 785 #elif 786 #else 787 #endif 788 #error 789 #if 790 #ifdef 791 #ifndef 792 #include 793 #pragma message 794 #undef 795 #warning 796In addition, these new command line options are supported: 797 -D <symbol> Define symbol for preprocessor use 798 -li Create preprocessed output file (*.i) 799 -P Preprocess only and create preprocessor output file (*.i) 800 801Table Compiler: Fixed a problem where the equals operator within an 802expression 803did not work properly. 804 805Updated iASL to use the current versions of Bison/Flex. Updated the 806Windows 807project file to invoke these tools from the standard location. ACPICA BZ 808904. 809Versions supported: 810 Flex for Windows: V2.5.4 811 Bison for Windows: V2.4.1 812 813---------------------------------------- 81415 February 2012. Summary of changes for version 20120215: 815 816 8171) ACPICA Core Subsystem: 818 819There have been some major changes to the sleep/wake support code, as 820described below (a - e). 821 822a) The AcpiLeaveSleepState has been split into two interfaces, similar to 823AcpiEnterSleepStatePrep and AcpiEnterSleepState. The new interface is 824AcpiLeaveSleepStatePrep. This allows the host to perform actions between 825the 826time the _BFS method is called and the _WAK method is called. NOTE: all 827hosts 828must update their wake/resume code or else sleep/wake will not work 829properly. 830Rafael Wysocki. 831 832b) In AcpiLeaveSleepState, now enable all runtime GPEs before calling the 833_WAK 834method. Some machines require that the GPEs are enabled before the _WAK 835method 836is executed. Thomas Renninger. 837 838c) In AcpiLeaveSleepState, now always clear the WAK_STS (wake status) bit. 839Some BIOS code assumes that WAK_STS will be cleared on resume and use it 840to 841determine whether the system is rebooting or resuming. Matthew Garrett. 842 843d) Move the invocations of _GTS (Going To Sleep) and _BFS (Back From 844Sleep) to 845match the ACPI specification requirement. Rafael Wysocki. 846 847e) Implemented full support for the ACPI 5.0 SleepStatus and SleepControl 848registers within the V5 FADT. This support adds two new files: 849hardware/hwesleep.c implements the support for the new registers. Moved 850all 851sleep/wake external interfaces to hardware/hwxfsleep.c. 852 853 854Added a new OSL interface for ACPI table overrides, 855AcpiOsPhysicalTableOverride. This interface allows the host to override a 856table via a physical address, instead of the logical address required by 857AcpiOsTableOverride. This simplifies the host implementation. Initial 858implementation by Thomas Renninger. The ACPICA implementation creates a 859single 860shared function for table overrides that attempts both a logical and a 861physical override. 862 863Expanded the OSL memory read/write interfaces to 64-bit data 864(AcpiOsReadMemory, AcpiOsWriteMemory.) This enables full 64-bit memory 865transfer support for GAS register structures passed to AcpiRead and 866AcpiWrite. 867 868Implemented the ACPI_REDUCED_HARDWARE option to allow the creation of a 869custom 870build of ACPICA that supports only the ACPI 5.0 reduced hardware (SoC) 871model. 872See the ACPICA reference for details. ACPICA BZ 942. This option removes 873about 87410% of the code and 5% of the static data, and the following hardware ACPI 875features become unavailable: 876 PM Event and Control registers 877 SCI interrupt (and handler) 878 Fixed Events 879 General Purpose Events (GPEs) 880 Global Lock 881 ACPI PM timer 882 FACS table (Waking vectors and Global Lock) 883 884Updated the unix tarball directory structure to match the ACPICA git 885source 886tree. This ensures that the generic unix makefiles work properly (in 887generate/unix). Also updated the Linux makefiles to match. ACPICA BZ 867. 888 889Updated the return value of the _REV predefined method to integer value 5 890to 891reflect ACPI 5.0 support. 892 893Moved the external ACPI PM timer interface prototypes to the public 894acpixf.h 895file where they belong. 896 897Example Code and Data Size: These are the sizes for the OS-independent 898acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 899debug 900version of the code includes the debug output trace mechanism and has a 901much 902larger code and data size. 903 904 Previous Release: 905 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total 906 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total 907 Current Release: 908 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total 909 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 910 911 9122) iASL Compiler/Disassembler and Tools: 913 914Disassembler: Fixed a problem with the new ACPI 5.0 serial resource 915descriptors (I2C, SPI, UART) where the resource produce/consumer bit was 916incorrectly displayed. 917 918AcpiHelp: Add display of ACPI/PNP device IDs that are defined in the ACPI 919specification. 920 921---------------------------------------- 92211 January 2012. Summary of changes for version 20120111: 923 924 9251) ACPICA Core Subsystem: 926 927Implemented a new mechanism to allow host device drivers to check for 928address 929range conflicts with ACPI Operation Regions. Both SystemMemory and 930SystemIO 931address spaces are supported. A new external interface, 932AcpiCheckAddressRange, 933allows drivers to check an address range against the ACPI namespace. See 934the 935ACPICA reference for additional details. Adds one new file, 936utilities/utaddress.c. Lin Ming, Bob Moore. 937 938Fixed several issues with the ACPI 5.0 FADT support: Add the sleep Control 939and 940Status registers, update the ACPI 5.0 flags, and update internal data 941structures to handle an FADT larger than 256 bytes. The size of the ACPI 9425.0 943FADT is 268 bytes. 944 945Updated all ACPICA copyrights and signons to 2012. Added the 2012 946copyright to 947all module headers and signons, including the standard Linux header. This 948affects virtually every file in the ACPICA core subsystem, iASL compiler, 949and 950all ACPICA utilities. 951 952Example Code and Data Size: These are the sizes for the OS-independent 953acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 954debug 955version of the code includes the debug output trace mechanism and has a 956much 957larger code and data size. 958 959 Previous Release: 960 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total 961 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total 962 Current Release: 963 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total 964 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total 965 966 9672) iASL Compiler/Disassembler and Tools: 968 969Disassembler: fixed a problem with the automatic resource tag generation 970support. Fixes a problem where the resource tags are inadvertently not 971constructed if the table being disassembled contains external references 972to 973control methods. Moved the actual construction of the tags to after the 974final 975namespace is constructed (after 2nd parse is invoked due to external 976control 977method references.) ACPICA BZ 941. 978 979Table Compiler: Make all "generic" operators caseless. These are the 980operators 981like UINT8, String, etc. Making these caseless improves ease-of-use. 982ACPICA BZ 983934. 984 985---------------------------------------- 98623 November 2011. Summary of changes for version 20111123: 987 9880) ACPI 5.0 Support: 989 990This release contains full support for the ACPI 5.0 specification, as 991summarized below. 992 993Reduced Hardware Support: 994------------------------- 995 996This support allows for ACPI systems without the usual ACPI hardware. This 997support is enabled by a flag in the revision 5 FADT. If it is set, ACPICA 998will 999not attempt to initialize or use any of the usual ACPI hardware. Note, 1000when 1001this flag is set, all of the following ACPI hardware is assumed to be not 1002present and is not initialized or accessed: 1003 1004 General Purpose Events (GPEs) 1005 Fixed Events (PM1a/PM1b and PM Control) 1006 Power Management Timer and Console Buttons (power/sleep) 1007 Real-time Clock Alarm 1008 Global Lock 1009 System Control Interrupt (SCI) 1010 The FACS is assumed to be non-existent 1011 1012ACPI Tables: 1013------------ 1014 1015All new tables and updates to existing tables are fully supported in the 1016ACPICA headers (for use by device drivers), the disassembler, and the iASL 1017Data Table Compiler. ACPI 5.0 defines these new tables: 1018 1019 BGRT /* Boot Graphics Resource Table */ 1020 DRTM /* Dynamic Root of Trust for Measurement table */ 1021 FPDT /* Firmware Performance Data Table */ 1022 GTDT /* Generic Timer Description Table */ 1023 MPST /* Memory Power State Table */ 1024 PCCT /* Platform Communications Channel Table */ 1025 PMTT /* Platform Memory Topology Table */ 1026 RASF /* RAS Feature table */ 1027 1028Operation Regions/SpaceIDs: 1029--------------------------- 1030 1031All new operation regions are fully supported by the iASL compiler, the 1032disassembler, and the ACPICA runtime code (for dispatch to region 1033handlers.) 1034The new operation region Space IDs are: 1035 1036 GeneralPurposeIo 1037 GenericSerialBus 1038 1039Resource Descriptors: 1040--------------------- 1041 1042All new ASL resource descriptors are fully supported by the iASL compiler, 1043the 1044ASL/AML disassembler, and the ACPICA runtime Resource Manager code 1045(including 1046all new predefined resource tags). New descriptors are: 1047 1048 FixedDma 1049 GpioIo 1050 GpioInt 1051 I2cSerialBus 1052 SpiSerialBus 1053 UartSerialBus 1054 1055ASL/AML Operators, New and Modified: 1056------------------------------------ 1057 1058One new operator is added, the Connection operator, which is used to 1059associate 1060a GeneralPurposeIo or GenericSerialBus resource descriptor with individual 1061field objects within an operation region. Several new protocols are 1062associated 1063with the AccessAs operator. All are fully supported by the iASL compiler, 1064disassembler, and runtime ACPICA AML interpreter: 1065 1066 Connection // Declare Field Connection attributes 1067 AccessAs: AttribBytes (n) // Read/Write N-Bytes Protocol 1068 AccessAs: AttribRawBytes (n) // Raw Read/Write N-Bytes Protocol 1069 AccessAs: AttribRawProcessBytes (n) // Raw Process Call Protocol 1070 RawDataBuffer // Data type for Vendor Data 1071fields 1072 1073Predefined ASL/AML Objects: 1074--------------------------- 1075 1076All new predefined objects/control-methods are supported by the iASL 1077compiler 1078and the ACPICA runtime validation/repair (arguments and return values.) 1079New 1080predefined names include the following: 1081 1082Standard Predefined Names (Objects or Control Methods): 1083 _AEI, _CLS, _CPC, _CWS, _DEP, 1084 _DLM, _EVT, _GCP, _CRT, _GWS, 1085 _HRV, _PRE, _PSE, _SRT, _SUB. 1086 1087Resource Tags (Names used to access individual fields within resource 1088descriptors): 1089 _DBT, _DPL, _DRS, _END, _FLC, 1090 _IOR, _LIN, _MOD, _PAR, _PHA, 1091 _PIN, _PPI, _POL, _RXL, _SLV, 1092 _SPE, _STB, _TXL, _VEN. 1093 1094ACPICA External Interfaces: 1095--------------------------- 1096 1097Several new interfaces have been defined for use by ACPI-related device 1098drivers and other host OS services: 1099 1100AcpiAcquireMutex and AcpiReleaseMutex: These interfaces allow the host OS 1101to 1102acquire and release AML mutexes that are defined in the DSDT/SSDT tables 1103provided by the BIOS. They are intended to be used in conjunction with the 1104ACPI 5.0 _DLM (Device Lock Method) in order to provide transaction-level 1105mutual exclusion with the AML code/interpreter. 1106 1107AcpiGetEventResources: Returns the (formatted) resource descriptors as 1108defined 1109by the ACPI 5.0 _AEI object (ACPI Event Information). This object 1110provides 1111resource descriptors associated with hardware-reduced platform events, 1112similar 1113to the AcpiGetCurrentResources interface. 1114 1115Operation Region Handlers: For General Purpose IO and Generic Serial Bus 1116operation regions, information about the Connection() object and any 1117optional 1118length information is passed to the region handler within the Context 1119parameter. 1120 1121AcpiBufferToResource: This interface converts a raw AML buffer containing 1122a 1123resource template or resource descriptor to the ACPI_RESOURCE internal 1124format 1125suitable for use by device drivers. Can be used by an operation region 1126handler 1127to convert the Connection() buffer object into a ACPI_RESOURCE. 1128 1129Miscellaneous/Tools/TestSuites: 1130------------------------------- 1131 1132Support for extended _HID names (Four alpha characters instead of three). 1133Support for ACPI 5.0 features in the AcpiExec and AcpiHelp utilities. 1134Support for ACPI 5.0 features in the ASLTS test suite. 1135Fully updated documentation (ACPICA and iASL reference documents.) 1136 1137ACPI Table Definition Language: 1138------------------------------- 1139 1140Support for this language was implemented and released as a subsystem of 1141the 1142iASL compiler in 2010. (See the iASL compiler User Guide.) 1143 1144 1145Non-ACPI 5.0 changes for this release: 1146-------------------------------------- 1147 11481) ACPICA Core Subsystem: 1149 1150Fix a problem with operation region declarations where a failure can occur 1151if 1152the region name and an argument that evaluates to an object (such as the 1153region address) are in different namespace scopes. Lin Ming, ACPICA BZ 1154937. 1155 1156Do not abort an ACPI table load if an invalid space ID is found within. 1157This 1158will be caught later if the offending method is executed. ACPICA BZ 925. 1159 1160Fixed an issue with the FFixedHW space ID where the ID was not always 1161recognized properly (Both ACPICA and iASL). ACPICA BZ 926. 1162 1163Fixed a problem with the 32-bit generation of the unix-specific OSL 1164(osunixxf.c). Lin Ming, ACPICA BZ 936. 1165 1166Several changes made to enable generation with the GCC 4.6 compiler. 1167ACPICA BZ 1168935. 1169 1170New error messages: Unsupported I/O requests (not 8/16/32 bit), and 1171Index/Bank 1172field registers out-of-range. 1173 11742) iASL Compiler/Disassembler and Tools: 1175 1176iASL: Implemented the __PATH__ operator, which returns the full pathname 1177of 1178the current source file. 1179 1180AcpiHelp: Automatically display expanded keyword information for all ASL 1181operators. 1182 1183Debugger: Add "Template" command to disassemble/dump resource template 1184buffers. 1185 1186Added a new master script to generate and execute the ASLTS test suite. 1187Automatically handles 32- and 64-bit generation. See tests/aslts.sh 1188 1189iASL: Fix problem with listing generation during processing of the 1190Switch() 1191operator where AML listing was disabled until the entire Switch block was 1192completed. 1193 1194iASL: Improve support for semicolon statement terminators. Fix "invalid 1195character" message for some cases when the semicolon is used. Semicolons 1196are 1197now allowed after every <Term> grammar element. ACPICA BZ 927. 1198 1199iASL: Fixed some possible aliasing warnings during generation. ACPICA BZ 1200923. 1201 1202Disassembler: Fix problem with disassembly of the DataTableRegion operator 1203where an inadvertent "Unhandled deferred opcode" message could be 1204generated. 1205 12063) Example Code and Data Size 1207 1208These are the sizes for the OS-independent acpica.lib produced by the 1209Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code 1210includes the debug output trace mechanism and has a much larger code and 1211data 1212size. 1213 1214 Previous Release: 1215 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 1216 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 1217 Current Release: 1218 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total 1219 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total 1220 1221---------------------------------------- 122222 September 2011. Summary of changes for version 20110922: 1223 12240) ACPI 5.0 News: 1225 1226Support for ACPI 5.0 in ACPICA has been underway for several months and 1227will 1228be released at the same time that ACPI 5.0 is officially released. 1229 1230The ACPI 5.0 specification is on track for release in the next few months. 1231 12321) ACPICA Core Subsystem: 1233 1234Fixed a problem where the maximum sleep time for the Sleep() operator was 1235intended to be limited to two seconds, but was inadvertently limited to 20 1236seconds instead. 1237 1238Linux and Unix makefiles: Added header file dependencies to ensure correct 1239generation of ACPICA core code and utilities. Also simplified the 1240makefiles 1241considerably through the use of the vpath variable to specify search 1242paths. 1243ACPICA BZ 924. 1244 12452) iASL Compiler/Disassembler and Tools: 1246 1247iASL: Implemented support to check the access length for all fields 1248created to 1249access named Resource Descriptor fields. For example, if a resource field 1250is 1251defined to be two bits, a warning is issued if a CreateXxxxField() is used 1252with an incorrect bit length. This is implemented for all current resource 1253descriptor names. ACPICA BZ 930. 1254 1255Disassembler: Fixed a byte ordering problem with the output of 24-bit and 125656- 1257bit integers. 1258 1259iASL: Fixed a couple of issues associated with variable-length package 1260objects. 1) properly handle constants like One, Ones, Zero -- do not make 1261a 1262VAR_PACKAGE when these are used as a package length. 2) Allow the 1263VAR_PACKAGE 1264opcode (in addition to PACKAGE) when validating object types for 1265predefined 1266names. 1267 1268iASL: Emit statistics for all output files (instead of just the ASL input 1269and 1270AML output). Includes listings, hex files, etc. 1271 1272iASL: Added -G option to the table compiler to allow the compilation of 1273custom 1274ACPI tables. The only part of a table that is required is the standard 36- 1275byte 1276ACPI header. 1277 1278AcpiXtract: Ported to the standard ACPICA environment (with ACPICA 1279headers), 1280which also adds correct 64-bit support. Also, now all output filenames are 1281completely lower case. 1282 1283AcpiExec: Ignore any non-AML tables (tables other than DSDT or SSDT) when 1284loading table files. A warning is issued for any such tables. The only 1285exception is an FADT. This also fixes a possible fault when attempting to 1286load 1287non-AML tables. ACPICA BZ 932. 1288 1289AcpiHelp: Added the AccessAs and Offset operators. Fixed a problem where a 1290missing table terminator could cause a fault when using the -p option. 1291 1292AcpiSrc: Fixed a possible divide-by-zero fault when generating file 1293statistics. 1294 12953) Example Code and Data Size 1296 1297These are the sizes for the OS-independent acpica.lib produced by the 1298Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code 1299includes the debug output trace mechanism and has a much larger code and 1300data 1301size. 1302 1303 Previous Release (VC 9.0): 1304 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 1305 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 1306 Current Release (VC 9.0): 1307 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 1308 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 1309 1310 1311---------------------------------------- 131223 June 2011. Summary of changes for version 20110623: 1313 13141) ACPI CA Core Subsystem: 1315 1316Updated the predefined name repair mechanism to not attempt repair of a 1317_TSS 1318return object if a _PSS object is present. We can only sort the _TSS 1319return 1320package if there is no _PSS within the same scope. This is because if _PSS 1321is 1322present, the ACPI specification dictates that the _TSS Power Dissipation 1323field 1324is to be ignored, and therefore some BIOSs leave garbage values in the 1325_TSS 1326Power field(s). In this case, it is best to just return the _TSS package 1327as- 1328is. Reported by, and fixed with assistance from Fenghua Yu. 1329 1330Added an option to globally disable the control method return value 1331validation 1332and repair. This runtime option can be used to disable return value repair 1333if 1334this is causing a problem on a particular machine. Also added an option to 1335AcpiExec (-dr) to set this disable flag. 1336 1337All makefiles and project files: Major changes to improve generation of 1338ACPICA 1339tools. ACPICA BZ 912: 1340 Reduce default optimization levels to improve compatibility 1341 For Linux, add strict-aliasing=0 for gcc 4 1342 Cleanup and simplify use of command line defines 1343 Cleanup multithread library support 1344 Improve usage messages 1345 1346Linux-specific header: update handling of THREAD_ID and pthread. For the 134732- 1348bit case, improve casting to eliminate possible warnings, especially with 1349the 1350acpica tools. 1351 1352Example Code and Data Size: These are the sizes for the OS-independent 1353acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1354debug 1355version of the code includes the debug output trace mechanism and has a 1356much 1357larger code and data size. 1358 1359 Previous Release (VC 9.0): 1360 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total 1361 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 1362 Current Release (VC 9.0): 1363 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 1364 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 1365 13662) iASL Compiler/Disassembler and Tools: 1367 1368With this release, a new utility named "acpihelp" has been added to the 1369ACPICA 1370package. This utility summarizes the ACPI specification chapters for the 1371ASL 1372and AML languages. It generates under Linux/Unix as well as Windows, and 1373provides the following functionality: 1374 Find/display ASL operator(s) -- with description and syntax. 1375 Find/display ASL keyword(s) -- with exact spelling and descriptions. 1376 Find/display ACPI predefined name(s) -- with description, number 1377 of arguments, and the return value data type. 1378 Find/display AML opcode name(s) -- with opcode, arguments, and 1379grammar. 1380 Decode/display AML opcode -- with opcode name, arguments, and grammar. 1381 1382Service Layers: Make multi-thread support configurable. Conditionally 1383compile 1384the multi-thread support so that threading libraries will not be linked if 1385not 1386necessary. The only tool that requires multi-thread support is AcpiExec. 1387 1388iASL: Update yyerrror/AslCompilerError for "const" errors. Newer versions 1389of 1390Bison appear to want the interface to yyerror to be a const char * (or at 1391least this is a problem when generating iASL on some systems.) ACPICA BZ 1392923 1393Pierre Lejeune. 1394 1395Tools: Fix for systems where O_BINARY is not defined. Only used for 1396Windows 1397versions of the tools. 1398 1399---------------------------------------- 140027 May 2011. Summary of changes for version 20110527: 1401 14021) ACPI CA Core Subsystem: 1403 1404ASL Load() operator: Reinstate most restrictions on the incoming ACPI 1405table 1406signature. Now, only allow SSDT, OEMx, and a null signature. History: 1407 1) Originally, we checked the table signature for "SSDT" or "PSDT". 1408 (PSDT is now obsolete.) 1409 2) We added support for OEMx tables, signature "OEM" plus a fourth 1410 "don't care" character. 1411 3) Valid tables were encountered with a null signature, so we just 1412 gave up on validating the signature, (05/2008). 1413 4) We encountered non-AML tables such as the MADT, which caused 1414 interpreter errors and kernel faults. So now, we once again allow 1415 only SSDT, OEMx, and now, also a null signature. (05/2011). 1416 1417Added the missing _TDL predefined name to the global name list in order to 1418enable validation. Affects both the core ACPICA code and the iASL 1419compiler. 1420 1421Example Code and Data Size: These are the sizes for the OS-independent 1422acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1423debug 1424version of the code includes the debug output trace mechanism and has a 1425much 1426larger code and data size. 1427 1428 Previous Release (VC 9.0): 1429 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total 1430 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total 1431 Current Release (VC 9.0): 1432 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total 1433 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 1434 14352) iASL Compiler/Disassembler and Tools: 1436 1437Debugger/AcpiExec: Implemented support for "complex" method arguments on 1438the 1439debugger command line. This adds support beyond simple integers -- 1440including 1441Strings, Buffers, and Packages. Includes support for nested packages. 1442Increased the default command line buffer size to accommodate these 1443arguments. 1444See the ACPICA reference for details and syntax. ACPICA BZ 917. 1445 1446Debugger/AcpiExec: Implemented support for "default" method arguments for 1447the 1448Execute/Debug command. Now, the debugger will always invoke a control 1449method 1450with the required number of arguments -- even if the command line 1451specifies 1452none or insufficient arguments. It uses default integer values for any 1453missing 1454arguments. Also fixes a bug where only six method arguments maximum were 1455supported instead of the required seven. 1456 1457Debugger/AcpiExec: Add a maximum buffer length parameter to AcpiOsGetLine 1458and 1459also return status in order to prevent buffer overruns. See the ACPICA 1460reference for details and syntax. ACPICA BZ 921 1461 1462iASL: Cleaned up support for Berkeley yacc. A general cleanup of code and 1463makefiles to simplify support for the two different but similar parser 1464generators, bison and yacc. 1465 1466Updated the generic unix makefile for gcc 4. The default gcc version is 1467now 1468expected to be 4 or greater, since options specific to gcc 4 are used. 1469 1470---------------------------------------- 147113 April 2011. Summary of changes for version 20110413: 1472 14731) ACPI CA Core Subsystem: 1474 1475Implemented support to execute a so-called "orphan" _REG method under the 1476EC 1477device. This change will force the execution of a _REG method underneath 1478the 1479EC 1480device even if there is no corresponding operation region of type 1481EmbeddedControl. Fixes a problem seen on some machines and apparently is 1482compatible with Windows behavior. ACPICA BZ 875. 1483 1484Added more predefined methods that are eligible for automatic NULL package 1485element removal. This change adds another group of predefined names to the 1486list 1487of names that can be repaired by having NULL package elements dynamically 1488removed. This group are those methods that return a single variable-length 1489package containing simple data types such as integers, buffers, strings. 1490This 1491includes: _ALx, _BCL, _CID,_ DOD, _EDL, _FIX, _PCL, _PLD, _PMD, _PRx, 1492_PSL, 1493_Sx, 1494and _TZD. ACPICA BZ 914. 1495 1496Split and segregated all internal global lock functions to a new file, 1497evglock.c. 1498 1499Updated internal address SpaceID for DataTable regions. Moved this 1500internal 1501space 1502id in preparation for ACPI 5.0 changes that will include some new space 1503IDs. 1504This 1505change should not affect user/host code. 1506 1507Example Code and Data Size: These are the sizes for the OS-independent 1508acpica.lib 1509produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug 1510version of 1511the code includes the debug output trace mechanism and has a much larger 1512code 1513and 1514data size. 1515 1516 Previous Release (VC 9.0): 1517 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total 1518 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total 1519 Current Release (VC 9.0): 1520 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total 1521 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total 1522 15232) iASL Compiler/Disassembler and Tools: 1524 1525iASL/DTC: Major update for new grammar features. Allow generic data types 1526in 1527custom ACPI tables. Field names are now optional. Any line can be split to 1528multiple lines using the continuation char (\). Large buffers now use 1529line- 1530continuation character(s) and no colon on the continuation lines. See the 1531grammar 1532update in the iASL compiler reference. ACPI BZ 910,911. Lin Ming, Bob 1533Moore. 1534 1535iASL: Mark ASL "Return()" and the simple "Return" as "Null" return 1536statements. 1537Since the parser stuffs a "zero" as the return value for these statements 1538(due 1539to 1540the underlying AML grammar), they were seen as "return with value" by the 1541iASL 1542semantic checking. They are now seen correctly as "null" return 1543statements. 1544 1545iASL: Check if a_REG declaration has a corresponding Operation Region. 1546Adds a 1547check for each _REG to ensure that there is in fact a corresponding 1548operation 1549region declaration in the same scope. If not, the _REG method is not very 1550useful 1551since it probably won't be executed. ACPICA BZ 915. 1552 1553iASL/DTC: Finish support for expression evaluation. Added a new expression 1554parser 1555that implements c-style operator precedence and parenthesization. ACPICA 1556bugzilla 1557908. 1558 1559Disassembler/DTC: Remove support for () and <> style comments in data 1560tables. 1561Now 1562that DTC has full expression support, we don't want to have comment 1563strings 1564that 1565start with a parentheses or a less-than symbol. Now, only the standard /* 1566and 1567// 1568comments are supported, as well as the bracket [] comments. 1569 1570AcpiXtract: Fix for RSDP and dynamic SSDT extraction. These tables have 1571"unusual" 1572headers in the acpidump file. Update the header validation to support 1573these 1574tables. Problem introduced in previous AcpiXtract version in the change to 1575support "wrong checksum" error messages emitted by acpidump utility. 1576 1577iASL: Add a * option to generate all template files (as a synonym for ALL) 1578as 1579in 1580"iasl -T *" or "iasl -T ALL". 1581 1582iASL/DTC: Do not abort compiler on fatal errors. We do not want to 1583completely 1584abort the compiler on "fatal" errors, simply should abort the current 1585compile. 1586This allows multiple compiles with a single (possibly wildcard) compiler 1587invocation. 1588 1589---------------------------------------- 159016 March 2011. Summary of changes for version 20110316: 1591 15921) ACPI CA Core Subsystem: 1593 1594Fixed a problem caused by a _PRW method appearing at the namespace root 1595scope 1596during the setup of wake GPEs. A fault could occur if a _PRW directly 1597under 1598the 1599root object was passed to the AcpiSetupGpeForWake interface. Lin Ming. 1600 1601Implemented support for "spurious" Global Lock interrupts. On some 1602systems, a 1603global lock interrupt can occur without the pending flag being set. Upon a 1604GL 1605interrupt, we now ensure that a thread is actually waiting for the lock 1606before 1607signaling GL availability. Rafael Wysocki, Bob Moore. 1608 1609Example Code and Data Size: These are the sizes for the OS-independent 1610acpica.lib 1611produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug 1612version of 1613the code includes the debug output trace mechanism and has a much larger 1614code 1615and 1616data size. 1617 1618 Previous Release (VC 9.0): 1619 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 1620 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 1621 Current Release (VC 9.0): 1622 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total 1623 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total 1624 16252) iASL Compiler/Disassembler and Tools: 1626 1627Implemented full support for the "SLIC" ACPI table. Includes support in 1628the 1629header files, disassembler, table compiler, and template generator. Bob 1630Moore, 1631Lin Ming. 1632 1633AcpiXtract: Correctly handle embedded comments and messages from AcpiDump. 1634Apparently some or all versions of acpidump will occasionally emit a 1635comment 1636like 1637"Wrong checksum", etc., into the dump file. This was causing problems for 1638AcpiXtract. ACPICA BZ 905. 1639 1640iASL: Fix the Linux makefile by removing an inadvertent double file 1641inclusion. 1642ACPICA BZ 913. 1643 1644AcpiExec: Update installation of operation region handlers. Install one 1645handler 1646for a user-defined address space. This is used by the ASL test suite 1647(ASLTS). 1648 1649---------------------------------------- 165011 February 2011. Summary of changes for version 20110211: 1651 16521) ACPI CA Core Subsystem: 1653 1654Added a mechanism to defer _REG methods for some early-installed handlers. 1655Most user handlers should be installed before call to AcpiEnableSubsystem. 1656However, Event handlers and region handlers should be installed after 1657AcpiInitializeObjects. Override handlers for the "default" regions should 1658be 1659installed early, however. This change executes all _REG methods for the 1660default regions (Memory/IO/PCI/DataTable) simultaneously to prevent any 1661chicken/egg issues between them. ACPICA BZ 848. 1662 1663Implemented an optimization for GPE detection. This optimization will 1664simply 1665ignore GPE registers that contain no enabled GPEs -- there is no need to 1666read the register since this information is available internally. This 1667becomes more important on machines with a large GPE space. ACPICA bugzilla 1668884. Lin Ming. Suggestion from Joe Liu. 1669 1670Removed all use of the highly unreliable FADT revision field. The revision 1671number in the FADT has been found to be completely unreliable and cannot 1672be 1673trusted. Only the actual table length can be used to infer the version. 1674This 1675change updates the ACPICA core and the disassembler so that both no longer 1676even look at the FADT version and instead depend solely upon the FADT 1677length. 1678 1679Fix an unresolved name issue for the no-debug and no-error-message source 1680generation cases. The _AcpiModuleName was left undefined in these cases, 1681but 1682it is actually needed as a parameter to some interfaces. Define 1683_AcpiModuleName as a null string in these cases. ACPICA Bugzilla 888. 1684 1685Split several large files (makefiles and project files updated) 1686 utglobal.c -> utdecode.c 1687 dbcomds.c -> dbmethod.c dbnames.c 1688 dsopcode.c -> dsargs.c dscontrol.c 1689 dsload.c -> dsload2.c 1690 aslanalyze.c -> aslbtypes.c aslwalks.c 1691 1692Example Code and Data Size: These are the sizes for the OS-independent 1693acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1694debug version of the code includes the debug output trace mechanism and 1695has 1696a much larger code and data size. 1697 1698 Previous Release (VC 9.0): 1699 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 1700 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 1701 Current Release (VC 9.0): 1702 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 1703 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 1704 17052) iASL Compiler/Disassembler and Tools: 1706 1707iASL: Implemented the predefined macros __LINE__, __FILE__, and __DATE__. 1708These are useful C-style macros with the standard definitions. ACPICA 1709bugzilla 898. 1710 1711iASL/DTC: Added support for integer expressions and labels. Support for 1712full 1713expressions for all integer fields in all ACPI tables. Support for labels 1714in 1715"generic" portions of tables such as UEFI. See the iASL reference manual. 1716 1717Debugger: Added a command to display the status of global handlers. The 1718"handlers" command will display op region, fixed event, and miscellaneous 1719global handlers. installation status -- and for op regions, whether 1720default 1721or user-installed handler will be used. 1722 1723iASL: Warn if reserved method incorrectly returns a value. Many predefined 1724names are defined such that they do not return a value. If implemented as 1725a 1726method, issue a warning if such a name explicitly returns a value. ACPICA 1727Bugzilla 855. 1728 1729iASL: Added detection of GPE method name conflicts. Detects a conflict 1730where 1731there are two GPE methods of the form _Lxy and _Exy in the same scope. 1732(For 1733example, _L1D and _E1D in the same scope.) ACPICA bugzilla 848. 1734 1735iASL/DTC: Fixed a couple input scanner issues with comments and line 1736numbers. Comment remover could get confused and miss a comment ending. 1737Fixed 1738a problem with line counter maintenance. 1739 1740iASL/DTC: Reduced the severity of some errors from fatal to error. There 1741is 1742no need to abort on simple errors within a field definition. 1743 1744Debugger: Simplified the output of the help command. All help output now 1745in 1746a single screen, instead of help subcommands. ACPICA Bugzilla 897. 1747 1748---------------------------------------- 174912 January 2011. Summary of changes for version 20110112: 1750 17511) ACPI CA Core Subsystem: 1752 1753Fixed a race condition between method execution and namespace walks that 1754can 1755possibly cause a fault. The problem was apparently introduced in version 175620100528 as a result of a performance optimization that reduces the number 1757of 1758namespace walks upon method exit by using the delete_namespace_subtree 1759function instead of the delete_namespace_by_owner function used 1760previously. 1761Bug is a missing namespace lock in the delete_namespace_subtree function. 1762dana.myers@oracle.com 1763 1764Fixed several issues and a possible fault with the automatic "serialized" 1765method support. History: This support changes a method to "serialized" on 1766the 1767fly if the method generates an AE_ALREADY_EXISTS error, indicating the 1768possibility that it cannot handle reentrancy. This fix repairs a couple of 1769issues seen in the field, especially on machines with many cores: 1770 1771 1) Delete method children only upon the exit of the last thread, 1772 so as to not delete objects out from under other running threads 1773 (and possibly causing a fault.) 1774 2) Set the "serialized" bit for the method only upon the exit of the 1775 Last thread, so as to not cause deadlock when running threads 1776 attempt to exit. 1777 3) Cleanup the use of the AML "MethodFlags" and internal method flags 1778 so that there is no longer any confusion between the two. 1779 1780 Lin Ming, Bob Moore. Reported by dana.myers@oracle.com. 1781 1782Debugger: Now lock the namespace for duration of a namespace dump. 1783Prevents 1784issues if the namespace is changing dynamically underneath the debugger. 1785Especially affects temporary namespace nodes, since the debugger displays 1786these also. 1787 1788Updated the ordering of include files. The ACPICA headers should appear 1789before any compiler-specific headers (stdio.h, etc.) so that acenv.h can 1790set 1791any necessary compiler-specific defines, etc. Affects the ACPI-related 1792tools 1793and utilities. 1794 1795Updated all ACPICA copyrights and signons to 2011. Added the 2011 1796copyright 1797to all module headers and signons, including the Linux header. This 1798affects 1799virtually every file in the ACPICA core subsystem, iASL compiler, and all 1800utilities. 1801 1802Added project files for MS Visual Studio 2008 (VC++ 9.0). The original 1803project files for VC++ 6.0 are now obsolete. New project files can be 1804found 1805under acpica/generate/msvc9. See acpica/generate/msvc9/readme.txt for 1806details. 1807 1808Example Code and Data Size: These are the sizes for the OS-independent 1809acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1810debug version of the code includes the debug output trace mechanism and 1811has a 1812much larger code and data size. 1813 1814 Previous Release (VC 6.0): 1815 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total 1816 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total 1817 Current Release (VC 9.0): 1818 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 1819 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 1820 18212) iASL Compiler/Disassembler and Tools: 1822 1823iASL: Added generic data types to the Data Table compiler. Add "generic" 1824data 1825types such as UINT32, String, Unicode, etc., to simplify the generation of 1826platform-defined tables such as UEFI. Lin Ming. 1827 1828iASL: Added listing support for the Data Table Compiler. Adds listing 1829support 1830(-l) to display actual binary output for each line of input code. 1831 1832---------------------------------------- 183309 December 2010. Summary of changes for version 20101209: 1834 18351) ACPI CA Core Subsystem: 1836 1837Completed the major overhaul of the GPE support code that was begun in 1838July 18392010. Major features include: removal of _PRW execution in ACPICA (host 1840executes _PRWs anyway), cleanup of "wake" GPE interfaces and processing, 1841changes to existing interfaces, simplification of GPE handler operation, 1842and 1843a handful of new interfaces: 1844 1845 AcpiUpdateAllGpes 1846 AcpiFinishGpe 1847 AcpiSetupGpeForWake 1848 AcpiSetGpeWakeMask 1849 One new file, evxfgpe.c to consolidate all external GPE interfaces. 1850 1851See the ACPICA Programmer Reference for full details and programming 1852information. See the new section 4.4 "General Purpose Event (GPE) Support" 1853for a full overview, and section 8.7 "ACPI General Purpose Event 1854Management" 1855for programming details. ACPICA BZ 858,870,877. Matthew Garrett, Lin Ming, 1856Bob Moore, Rafael Wysocki. 1857 1858Implemented a new GPE feature for Windows compatibility, the "Implicit 1859Wake 1860GPE Notify". This feature will automatically issue a Notify(2) on a device 1861when a Wake GPE is received if there is no corresponding GPE method or 1862handler. ACPICA BZ 870. 1863 1864Fixed a problem with the Scope() operator during table parse and load 1865phase. 1866During load phase (table load or method execution), the scope operator 1867should 1868not enter the target into the namespace. Instead, it should open a new 1869scope 1870at the target location. Linux BZ 19462, ACPICA BZ 882. 1871 1872Example Code and Data Size: These are the sizes for the OS-independent 1873acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1874debug version of the code includes the debug output trace mechanism and 1875has a 1876much larger code and data size. 1877 1878 Previous Release: 1879 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total 1880 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total 1881 Current Release: 1882 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 1883 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 1884 18852) iASL Compiler/Disassembler and Tools: 1886 1887iASL: Relax the alphanumeric restriction on _CID strings. These strings 1888are 1889"bus-specific" per the ACPI specification, and therefore any characters 1890are 1891acceptable. The only checks that can be performed are for a null string 1892and 1893perhaps for a leading asterisk. ACPICA BZ 886. 1894 1895iASL: Fixed a problem where a syntax error that caused a premature EOF 1896condition on the source file emitted a very confusing error message. The 1897premature EOF is now detected correctly. ACPICA BZ 891. 1898 1899Disassembler: Decode the AccessSize within a Generic Address Structure 1900(byte 1901access, word access, etc.) Note, this field does not allow arbitrary bit 1902access, the size is encoded as 1=byte, 2=word, 3=dword, and 4=qword. 1903 1904New: AcpiNames utility - Example namespace dump utility. Shows an example 1905of 1906ACPICA configuration for a minimal namespace dump utility. Uses table and 1907namespace managers, but no AML interpreter. Does not add any functionality 1908over AcpiExec, it is a subset of AcpiExec. The purpose is to show how to 1909partition and configure ACPICA. ACPICA BZ 883. 1910 1911AML Debugger: Increased the debugger buffer size for method return 1912objects. 1913Was 4K, increased to 16K. Also enhanced error messages for debugger method 1914execution, including the buffer overflow case. 1915 1916---------------------------------------- 191713 October 2010. Summary of changes for version 20101013: 1918 19191) ACPI CA Core Subsystem: 1920 1921Added support to clear the PCIEXP_WAKE event. When clearing ACPI events, 1922now 1923clear the PCIEXP_WAKE_STS bit in the ACPI PM1 Status Register, via 1924HwClearAcpiStatus. Original change from Colin King. ACPICA BZ 880. 1925 1926Changed the type of the predefined namespace object _TZ from ThermalZone 1927to 1928Device. This was found to be confusing to the host software that processes 1929the various thermal zones, since _TZ is not really a ThermalZone. However, 1930a 1931Notify() can still be performed on it. ACPICA BZ 876. Suggestion from Rui 1932Zhang. 1933 1934Added Windows Vista SP2 to the list of supported _OSI strings. The actual 1935string is "Windows 2006 SP2". 1936 1937Eliminated duplicate code in AcpiUtExecute* functions. Now that the 1938nsrepair 1939code automatically repairs _HID-related strings, this type of code is no 1940longer needed in Execute_HID, Execute_CID, and Execute_UID. ACPICA BZ 878. 1941 1942Example Code and Data Size: These are the sizes for the OS-independent 1943acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1944debug version of the code includes the debug output trace mechanism and 1945has a 1946much larger code and data size. 1947 1948 Previous Release: 1949 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 1950 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 1951 Current Release: 1952 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 1953 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 1954 19552) iASL Compiler/Disassembler and Tools: 1956 1957iASL: Implemented additional compile-time validation for _HID strings. The 1958non-hex prefix (such as "PNP" or "ACPI") must be uppercase, and the length 1959of 1960the string must be exactly seven or eight characters. For both _HID and 1961_CID 1962strings, all characters must be alphanumeric. ACPICA BZ 874. 1963 1964iASL: Allow certain "null" resource descriptors. Some BIOS code creates 1965descriptors that are mostly or all zeros, with the expectation that they 1966will 1967be filled in at runtime. iASL now allows this as long as there is a 1968"resource 1969tag" (name) associated with the descriptor, which gives the ASL a handle 1970needed to modify the descriptor. ACPICA BZ 873. 1971 1972Added single-thread support to the generic Unix application OSL. Primarily 1973for iASL support, this change removes the use of semaphores in the single- 1974threaded ACPICA tools/applications - increasing performance. The 1975_MULTI_THREADED option was replaced by the (reverse) ACPI_SINGLE_THREADED 1976option. ACPICA BZ 879. 1977 1978AcpiExec: several fixes for the 64-bit version. Adds XSDT support and 1979support 1980for 64-bit DSDT/FACS addresses in the FADT. Lin Ming. 1981 1982iASL: Moved all compiler messages to a new file, aslmessages.h. 1983 1984---------------------------------------- 198515 September 2010. Summary of changes for version 20100915: 1986 19871) ACPI CA Core Subsystem: 1988 1989Removed the AcpiOsDerivePciId OSL interface. The various host 1990implementations 1991of this function were not OS-dependent and are now obsolete and can be 1992removed from all host OSLs. This function has been replaced by 1993AcpiHwDerivePciId, which is now part of the ACPICA core code. 1994AcpiHwDerivePciId has been implemented without recursion. Adds one new 1995module, hwpci.c. ACPICA BZ 857. 1996 1997Implemented a dynamic repair for _HID and _CID strings. The following 1998problems are now repaired at runtime: 1) Remove a leading asterisk in the 1999string, and 2) the entire string is uppercased. Both repairs are in 2000accordance with the ACPI specification and will simplify host driver code. 2001ACPICA BZ 871. 2002 2003The ACPI_THREAD_ID type is no longer configurable, internally it is now 2004always UINT64. This simplifies the ACPICA code, especially any printf 2005output. 2006UINT64 is the only common data type for all thread_id types across all 2007operating systems. It is now up to the host OSL to cast the native 2008thread_id 2009type to UINT64 before returning the value to ACPICA (via 2010AcpiOsGetThreadId). 2011Lin Ming, Bob Moore. 2012 2013Added the ACPI_INLINE type to enhance the ACPICA configuration. The 2014"inline" 2015keyword is not standard across compilers, and this type allows inline to 2016be 2017configured on a per-compiler basis. Lin Ming. 2018 2019Made the system global AcpiGbl_SystemAwakeAndRunning publically available. 2020Added an extern for this boolean in acpixf.h. Some hosts utilize this 2021value 2022during suspend/restore operations. ACPICA BZ 869. 2023 2024All code that implements error/warning messages with the "ACPI:" prefix 2025has 2026been moved to a new module, utxferror.c. 2027 2028The UINT64_OVERLAY was moved to utmath.c, which is the only module where 2029it 2030is used. ACPICA BZ 829. Lin Ming, Bob Moore. 2031 2032Example Code and Data Size: These are the sizes for the OS-independent 2033acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2034debug version of the code includes the debug output trace mechanism and 2035has a 2036much larger code and data size. 2037 2038 Previous Release: 2039 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total 2040 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total 2041 Current Release: 2042 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 2043 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 2044 20452) iASL Compiler/Disassembler and Tools: 2046 2047iASL/Disassembler: Write ACPI errors to stderr instead of the output file. 2048This keeps the output files free of random error messages that may 2049originate 2050from within the namespace/interpreter code. Used this opportunity to merge 2051all ACPI:-style messages into a single new module, utxferror.c. ACPICA BZ 2052866. Lin Ming, Bob Moore. 2053 2054Tools: update some printfs for ansi warnings on size_t. Handle width 2055change 2056of size_t on 32-bit versus 64-bit generations. Lin Ming. 2057 2058---------------------------------------- 205906 August 2010. Summary of changes for version 20100806: 2060 20611) ACPI CA Core Subsystem: 2062 2063Designed and implemented a new host interface to the _OSI support code. 2064This 2065will allow the host to dynamically add or remove multiple _OSI strings, as 2066well as install an optional handler that is called for each _OSI 2067invocation. 2068Also added a new AML debugger command, 'osi' to display and modify the 2069global 2070_OSI string table, and test support in the AcpiExec utility. See the 2071ACPICA 2072reference manual for full details. Lin Ming, Bob Moore. ACPICA BZ 836. 2073New Functions: 2074 AcpiInstallInterface - Add an _OSI string. 2075 AcpiRemoveInterface - Delete an _OSI string. 2076 AcpiInstallInterfaceHandler - Install optional _OSI handler. 2077Obsolete Functions: 2078 AcpiOsValidateInterface - no longer used. 2079New Files: 2080 source/components/utilities/utosi.c 2081 2082Re-introduced the support to enable multi-byte transfers for Embedded 2083Controller (EC) operation regions. A reported problem was found to be a 2084bug 2085in the host OS, not in the multi-byte support. Previously, the maximum 2086data 2087size passed to the EC operation region handler was a single byte. There 2088are 2089often EC Fields larger than one byte that need to be transferred, and it 2090is 2091useful for the EC driver to lock these as a single transaction. This 2092change 2093enables single transfers larger than 8 bits. This effectively changes the 2094access to the EC space from ByteAcc to AnyAcc, and will probably require 2095changes to the host OS Embedded Controller driver to enable 16/32/64/256- 2096bit 2097transfers in addition to 8-bit transfers. Alexey Starikovskiy, Lin Ming. 2098 2099Fixed a problem with the prototype for AcpiOsReadPciConfiguration. The 2100prototype in acpiosxf.h had the output value pointer as a (void *). 2101It should be a (UINT64 *). This may affect some host OSL code. 2102 2103Fixed a couple problems with the recently modified Linux makefiles for 2104iASL 2105and AcpiExec. These new makefiles place the generated object files in the 2106local directory so that there can be no collisions between the files that 2107are 2108shared between them that are compiled with different options. 2109 2110Example Code and Data Size: These are the sizes for the OS-independent 2111acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2112debug version of the code includes the debug output trace mechanism and 2113has a 2114much larger code and data size. 2115 2116 Previous Release: 2117 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 2118 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total 2119 Current Release: 2120 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total 2121 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total 2122 21232) iASL Compiler/Disassembler and Tools: 2124 2125iASL/Disassembler: Added a new option (-da, "disassemble all") to load the 2126namespace from and disassemble an entire group of AML files. Useful for 2127loading all of the AML tables for a given machine (DSDT, SSDT1...SSDTn) 2128and 2129disassembling with one simple command. ACPICA BZ 865. Lin Ming. 2130 2131iASL: Allow multiple invocations of -e option. This change allows multiple 2132uses of -e on the command line: "-e ssdt1.dat -e ssdt2.dat". ACPICA BZ 2133834. 2134Lin Ming. 2135 2136---------------------------------------- 213702 July 2010. Summary of changes for version 20100702: 2138 21391) ACPI CA Core Subsystem: 2140 2141Implemented several updates to the recently added GPE reference count 2142support. The model for "wake" GPEs is changing to give the host OS 2143complete 2144control of these GPEs. Eventually, the ACPICA core will not execute any 2145_PRW 2146methods, since the host already must execute them. Also, additional 2147changes 2148were made to help ensure that the reference counts are kept in proper 2149synchronization with reality. Rafael J. Wysocki. 2150 21511) Ensure that GPEs are not enabled twice during initialization. 21522) Ensure that GPE enable masks stay in sync with the reference count. 21533) Do not inadvertently enable GPEs when writing GPE registers. 21544) Remove the internal wake reference counter and add new AcpiGpeWakeup 2155interface. This interface will set or clear individual GPEs for wakeup. 21565) Remove GpeType argument from AcpiEnable and AcpiDisable. These 2157interfaces 2158are now used for "runtime" GPEs only. 2159 2160Changed the behavior of the GPE install/remove handler interfaces. The GPE 2161is 2162no longer disabled during this process, as it was found to cause problems 2163on 2164some machines. Rafael J. Wysocki. 2165 2166Reverted a change introduced in version 20100528 to enable Embedded 2167Controller multi-byte transfers. This change was found to cause problems 2168with 2169Index Fields and possibly Bank Fields. It will be reintroduced when these 2170problems have been resolved. 2171 2172Fixed a problem with references to Alias objects within Package Objects. A 2173reference to an Alias within the definition of a Package was not always 2174resolved properly. Aliases to objects like Processors, Thermal zones, etc. 2175were resolved to the actual object instead of a reference to the object as 2176it 2177should be. Package objects are only allowed to contain integer, string, 2178buffer, package, and reference objects. Redhat bugzilla 608648. 2179 2180Example Code and Data Size: These are the sizes for the OS-independent 2181acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2182debug version of the code includes the debug output trace mechanism and 2183has a 2184much larger code and data size. 2185 2186 Previous Release: 2187 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 2188 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total 2189 Current Release: 2190 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 2191 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total 2192 21932) iASL Compiler/Disassembler and Tools: 2194 2195iASL: Implemented a new compiler subsystem to allow definition and 2196compilation of the non-AML ACPI tables such as FADT, MADT, SRAT, etc. 2197These 2198are called "ACPI Data Tables", and the new compiler is the "Data Table 2199Compiler". This compiler is intended to simplify the existing error-prone 2200process of creating these tables for the BIOS, as well as allowing the 2201disassembly, modification, recompilation, and override of existing ACPI 2202data 2203tables. See the iASL User Guide for detailed information. 2204 2205iASL: Implemented a new Template Generator option in support of the new 2206Data 2207Table Compiler. This option will create examples of all known ACPI tables 2208that can be used as the basis for table development. See the iASL 2209documentation and the -T option. 2210 2211Disassembler and headers: Added support for the WDDT ACPI table (Watchdog 2212Descriptor Table). 2213 2214Updated the Linux makefiles for iASL and AcpiExec to place the generated 2215object files in the local directory so that there can be no collisions 2216between the shared files between them that are generated with different 2217options. 2218 2219Added support for Mac OS X in the Unix OSL used for iASL and AcpiExec. Use 2220the #define __APPLE__ to enable this support. 2221 2222---------------------------------------- 222328 May 2010. Summary of changes for version 20100528: 2224 2225Note: The ACPI 4.0a specification was released on April 5, 2010 and is 2226available at www.acpi.info. This is primarily an errata release. 2227 22281) ACPI CA Core Subsystem: 2229 2230Undefined ACPI tables: We are looking for the definitions for the 2231following 2232ACPI tables that have been seen in the field: ATKG, IEIT, GSCI. 2233 2234Implemented support to enable multi-byte transfers for Embedded Controller 2235(EC) operation regions. Previously, the maximum data size passed to the EC 2236operation region handler was a single byte. There are often EC Fields 2237larger 2238than one byte that need to be transferred, and it is useful for the EC 2239driver 2240to lock these as a single transaction. This change enables single 2241transfers 2242larger than 8 bits. This effectively changes the access to the EC space 2243from 2244ByteAcc to AnyAcc, and will probably require changes to the host OS 2245Embedded 2246Controller driver to enable 16/32/64/256-bit transfers in addition to 8- 2247bit 2248transfers. Alexey Starikovskiy, Lin Ming 2249 2250Implemented a performance enhancement for namespace search and access. 2251This 2252change enhances the performance of namespace searches and walks by adding 2253a 2254backpointer to the parent in each namespace node. On large namespaces, 2255this 2256change can improve overall ACPI performance by up to 9X. Adding a pointer 2257to 2258each namespace node increases the overall size of the internal namespace 2259by 2260about 5%, since each namespace entry usually consists of both a namespace 2261node and an ACPI operand object. However, this is the first growth of the 2262namespace in ten years. ACPICA bugzilla 817. Alexey Starikovskiy. 2263 2264Implemented a performance optimization that reduces the number of 2265namespace 2266walks. On control method exit, only walk the namespace if the method is 2267known 2268to have created namespace objects outside of its local scope. Previously, 2269the 2270entire namespace was traversed on each control method exit. This change 2271can 2272improve overall ACPI performance by up to 3X. Alexey Starikovskiy, Bob 2273Moore. 2274 2275Added support to truncate I/O addresses to 16 bits for Windows 2276compatibility. 2277Some ASL code has been seen in the field that inadvertently has bits set 2278above bit 15. This feature is optional and is enabled if the BIOS requests 2279any Windows OSI strings. It can also be enabled by the host OS. Matthew 2280Garrett, Bob Moore. 2281 2282Added support to limit the maximum time for the ASL Sleep() operator. To 2283prevent accidental deep sleeps, limit the maximum time that Sleep() will 2284actually sleep. Configurable, the default maximum is two seconds. ACPICA 2285bugzilla 854. 2286 2287Added run-time validation support for the _WDG and_WED Microsoft 2288predefined 2289methods. These objects are defined by "Windows Instrumentation", and are 2290not 2291part of the ACPI spec. ACPICA BZ 860. 2292 2293Expanded all statistic counters used during namespace and device 2294initialization from 16 to 32 bits in order to support very large 2295namespaces. 2296 2297Replaced all instances of %d in printf format specifiers with %u since 2298nearly 2299all integers in ACPICA are unsigned. 2300 2301Fixed the exception namestring for AE_WAKE_ONLY_GPE. Was incorrectly 2302returned 2303as AE_NO_HANDLER. 2304 2305Example Code and Data Size: These are the sizes for the OS-independent 2306acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2307debug version of the code includes the debug output trace mechanism and 2308has a 2309much larger code and data size. 2310 2311 Previous Release: 2312 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total 2313 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total 2314 Current Release: 2315 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 2316 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total 2317 23182) iASL Compiler/Disassembler and Tools: 2319 2320iASL: Added compiler support for the _WDG and_WED Microsoft predefined 2321methods. These objects are defined by "Windows Instrumentation", and are 2322not 2323part of the ACPI spec. ACPICA BZ 860. 2324 2325AcpiExec: added option to disable the memory tracking mechanism. The -dt 2326option will disable the tracking mechanism, which improves performance 2327considerably. 2328 2329AcpiExec: Restructured the command line options into -d (disable) and -e 2330(enable) options. 2331 2332---------------------------------------- 233328 April 2010. Summary of changes for version 20100428: 2334 23351) ACPI CA Core Subsystem: 2336 2337Implemented GPE support for dynamically loaded ACPI tables. For all GPEs, 2338including FADT-based and GPE Block Devices, execute any _PRW methods in 2339the 2340new table, and process any _Lxx/_Exx GPE methods in the new table. Any 2341runtime GPE that is referenced by an _Lxx/_Exx method in the new table is 2342immediately enabled. Handles the FADT-defined GPEs as well as GPE Block 2343Devices. Provides compatibility with other ACPI implementations. Two new 2344files added, evgpeinit.c and evgpeutil.c. ACPICA BZ 833. Lin Ming, Bob 2345Moore. 2346 2347Fixed a regression introduced in version 20100331 within the table manager 2348where initial table loading could fail. This was introduced in the fix for 2349AcpiReallocateRootTable. Also, renamed some of fields in the table manager 2350data structures to clarify their meaning and use. 2351 2352Fixed a possible allocation overrun during internal object copy in 2353AcpiUtCopySimpleObject. The original code did not correctly handle the 2354case 2355where the object to be copied was a namespace node. Lin Ming. ACPICA BZ 2356847. 2357 2358Updated the allocation dump routine, AcpiUtDumpAllocation and fixed a 2359possible access beyond end-of-allocation. Also, now fully validate 2360descriptor 2361(size and type) before output. Lin Ming, Bob Moore. ACPICA BZ 847 2362 2363Example Code and Data Size: These are the sizes for the OS-independent 2364acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2365debug version of the code includes the debug output trace mechanism and 2366has a 2367much larger code and data size. 2368 2369 Previous Release: 2370 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total 2371 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total 2372 Current Release: 2373 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total 2374 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total 2375 23762) iASL Compiler/Disassembler and Tools: 2377 2378iASL: Implemented Min/Max/Len/Gran validation for address resource 2379descriptors. This change implements validation for the address fields that 2380are common to all address-type resource descriptors. These checks are 2381implemented: Checks for valid Min/Max, length within the Min/Max window, 2382valid granularity, Min/Max a multiple of granularity, and _MIF/_MAF as per 2383table 6-40 in the ACPI 4.0a specification. Also split the large 2384aslrestype1.c 2385and aslrestype2.c files into five new files. ACPICA BZ 840. 2386 2387iASL: Added support for the _Wxx predefined names. This support was 2388missing 2389and these names were not recognized by the compiler as valid predefined 2390names. ACPICA BZ 851. 2391 2392iASL: Added an error for all predefined names that are defined to return 2393no 2394value and thus must be implemented as Control Methods. These include all 2395of 2396the _Lxx, _Exx, _Wxx, and _Qxx names, as well as some other miscellaneous 2397names such as _DIS, _INI, _IRC, _OFF, _ON, and _PSx. ACPICA BZ 850, 856. 2398 2399iASL: Implemented the -ts option to emit hex AML data in ASL format, as an 2400ASL Buffer. Allows ACPI tables to be easily included within ASL files, to 2401be 2402dynamically loaded via the Load() operator. Also cleaned up output for the 2403- 2404ta and -tc options. ACPICA BZ 853. 2405 2406Tests: Added a new file with examples of extended iASL error checking. 2407Demonstrates the advanced error checking ability of the iASL compiler. 2408Available at tests/misc/badcode.asl. 2409 2410---------------------------------------- 241131 March 2010. Summary of changes for version 20100331: 2412 24131) ACPI CA Core Subsystem: 2414 2415Completed a major update for the GPE support in order to improve support 2416for 2417shared GPEs and to simplify both host OS and ACPICA code. Added a 2418reference 2419count mechanism to support shared GPEs that require multiple device 2420drivers. 2421Several external interfaces have changed. One external interface has been 2422removed. One new external interface was added. Most of the GPE external 2423interfaces now use the GPE spinlock instead of the events mutex (and the 2424Flags parameter for many GPE interfaces has been removed.) See the updated 2425ACPICA Programmer Reference for details. Matthew Garrett, Bob Moore, 2426Rafael 2427Wysocki. ACPICA BZ 831. 2428 2429Changed: 2430 AcpiEnableGpe, AcpiDisableGpe, AcpiClearGpe, AcpiGetGpeStatus 2431Removed: 2432 AcpiSetGpeType 2433New: 2434 AcpiSetGpe 2435 2436Implemented write support for DataTable operation regions. These regions 2437are 2438defined via the DataTableRegion() operator. Previously, only read support 2439was 2440implemented. The ACPI specification allows DataTableRegions to be 2441read/write, 2442however. 2443 2444Implemented a new subsystem option to force a copy of the DSDT to local 2445memory. Optionally copy the entire DSDT to local memory (instead of simply 2446mapping it.) There are some (albeit very rare) BIOSs that corrupt or 2447replace 2448the original DSDT, creating the need for this option. Default is FALSE, do 2449not copy the DSDT. 2450 2451Implemented detection of a corrupted or replaced DSDT. This change adds 2452support to detect a DSDT that has been corrupted and/or replaced from 2453outside 2454the OS (by firmware). This is typically catastrophic for the system, but 2455has 2456been seen on some machines. Once this problem has been detected, the DSDT 2457copy option can be enabled via system configuration. Lin Ming, Bob Moore. 2458 2459Fixed two problems with AcpiReallocateRootTable during the root table 2460copy. 2461When copying the root table to the new allocation, the length used was 2462incorrect. The new size was used instead of the current table size, 2463meaning 2464too much data was copied. Also, the count of available slots for ACPI 2465tables 2466was not set correctly. Alexey Starikovskiy, Bob Moore. 2467 2468Example Code and Data Size: These are the sizes for the OS-independent 2469acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2470debug version of the code includes the debug output trace mechanism and 2471has a 2472much larger code and data size. 2473 2474 Previous Release: 2475 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total 2476 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total 2477 Current Release: 2478 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total 2479 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total 2480 24812) iASL Compiler/Disassembler and Tools: 2482 2483iASL: Implement limited typechecking for values returned from predefined 2484control methods. The type of any returned static (unnamed) object is now 2485validated. For example, Return(1). ACPICA BZ 786. 2486 2487iASL: Fixed a predefined name object verification regression. Fixes a 2488problem 2489introduced in version 20100304. An error is incorrectly generated if a 2490predefined name is declared as a static named object with a value defined 2491using the keywords "Zero", "One", or "Ones". Lin Ming. 2492 2493iASL: Added Windows 7 support for the -g option (get local ACPI tables) by 2494reducing the requested registry access rights. ACPICA BZ 842. 2495 2496Disassembler: fixed a possible fault when generating External() 2497statements. 2498Introduced in commit ae7d6fd: Properly handle externals with parent-prefix 2499(carat). Fixes a string length allocation calculation. Lin Ming. 2500 2501---------------------------------------- 250204 March 2010. Summary of changes for version 20100304: 2503 25041) ACPI CA Core Subsystem: 2505 2506Fixed a possible problem with the AML Mutex handling function 2507AcpiExReleaseMutex where the function could fault under the very rare 2508condition when the interpreter has blocked, the interpreter lock is 2509released, 2510the interpreter is then reentered via the same thread, and attempts to 2511acquire an AML mutex that was previously acquired. FreeBSD report 140979. 2512Lin 2513Ming. 2514 2515Implemented additional configuration support for the AML "Debug Object". 2516Output from the debug object can now be enabled via a global variable, 2517AcpiGbl_EnableAmlDebugObject. This will assist with remote machine 2518debugging. 2519This debug output is now available in the release version of ACPICA 2520instead 2521of just the debug version. Also, the entire debug output module can now be 2522configured out of the ACPICA build if desired. One new file added, 2523executer/exdebug.c. Lin Ming, Bob Moore. 2524 2525Added header support for the ACPI MCHI table (Management Controller Host 2526Interface Table). This table was added in ACPI 4.0, but the defining 2527document 2528has only recently become available. 2529 2530Standardized output of integer values for ACPICA warnings/errors. Always 2531use 25320x prefix for hex output, always use %u for unsigned integer decimal 2533output. 2534Affects ACPI_INFO, ACPI_ERROR, ACPI_EXCEPTION, and ACPI_WARNING (about 400 2535invocations.) These invocations were converted from the original 2536ACPI_DEBUG_PRINT invocations and were not consistent. ACPICA BZ 835. 2537 2538Example Code and Data Size: These are the sizes for the OS-independent 2539acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2540debug version of the code includes the debug output trace mechanism and 2541has a 2542much larger code and data size. 2543 2544 Previous Release: 2545 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total 2546 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total 2547 Current Release: 2548 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total 2549 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total 2550 25512) iASL Compiler/Disassembler and Tools: 2552 2553iASL: Implemented typechecking support for static (non-control method) 2554predefined named objects that are declared with the Name() operator. For 2555example, the type of this object is now validated to be of type Integer: 2556Name(_BBN, 1). This change migrates the compiler to using the core 2557predefined 2558name table instead of maintaining a local version. Added a new file, 2559aslpredef.c. ACPICA BZ 832. 2560 2561Disassembler: Added support for the ACPI 4.0 MCHI table. 2562 2563---------------------------------------- 256421 January 2010. Summary of changes for version 20100121: 2565 25661) ACPI CA Core Subsystem: 2567 2568Added the 2010 copyright to all module headers and signons. This affects 2569virtually every file in the ACPICA core subsystem, the iASL compiler, the 2570tools/utilities, and the test suites. 2571 2572Implemented a change to the AcpiGetDevices interface to eliminate 2573unnecessary 2574invocations of the _STA method. In the case where a specific _HID is 2575requested, do not run _STA until a _HID match is found. This eliminates 2576potentially dozens of _STA calls during a search for a particular 2577device/HID, 2578which in turn can improve boot times. ACPICA BZ 828. Lin Ming. 2579 2580Implemented an additional repair for predefined method return values. 2581Attempt 2582to repair unexpected NULL elements within returned Package objects. Create 2583an 2584Integer of value zero, a NULL String, or a zero-length Buffer as 2585appropriate. 2586ACPICA BZ 818. Lin Ming, Bob Moore. 2587 2588Removed the obsolete ACPI_INTEGER data type. This type was introduced as 2589the 2590code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0 2591(with 259264-bit AML integers). It is now obsolete and this change removes it from 2593the 2594ACPICA code base, replaced by UINT64. The original typedef has been 2595retained 2596for now for compatibility with existing device driver code. ACPICA BZ 824. 2597 2598Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field in 2599the parse tree object. 2600 2601Added additional warning options for the gcc-4 generation. Updated the 2602source 2603accordingly. This includes some code restructuring to eliminate 2604unreachable 2605code, elimination of some gotos, elimination of unused return values, some 2606additional casting, and removal of redundant declarations. 2607 2608Example Code and Data Size: These are the sizes for the OS-independent 2609acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2610debug version of the code includes the debug output trace mechanism and 2611has a 2612much larger code and data size. 2613 2614 Previous Release: 2615 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 2616 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 2617 Current Release: 2618 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total 2619 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total 2620 26212) iASL Compiler/Disassembler and Tools: 2622 2623No functional changes for this release. 2624 2625---------------------------------------- 262614 December 2009. Summary of changes for version 20091214: 2627 26281) ACPI CA Core Subsystem: 2629 2630Enhanced automatic data type conversions for predefined name repairs. This 2631change expands the automatic repairs/conversions for predefined name 2632return 2633values to make Integers, Strings, and Buffers fully interchangeable. Also, 2634a 2635Buffer can be converted to a Package of Integers if necessary. The 2636nsrepair.c 2637module was completely restructured. Lin Ming, Bob Moore. 2638 2639Implemented automatic removal of null package elements during predefined 2640name 2641repairs. This change will automatically remove embedded and trailing NULL 2642package elements from returned package objects that are defined to contain 2643a 2644variable number of sub-packages. The driver is then presented with a 2645package 2646with no null elements to deal with. ACPICA BZ 819. 2647 2648Implemented a repair for the predefined _FDE and _GTM names. The expected 2649return value for both names is a Buffer of 5 DWORDs. This repair fixes two 2650possible problems (both seen in the field), where a package of integers is 2651returned, or a buffer of BYTEs is returned. With assistance from Jung-uk 2652Kim. 2653 2654Implemented additional module-level code support. This change will 2655properly 2656execute module-level code that is not at the root of the namespace (under 2657a 2658Device object, etc.). Now executes the code within the current scope 2659instead 2660of the root. ACPICA BZ 762. Lin Ming. 2661 2662Fixed possible mutex acquisition errors when running _REG methods. Fixes a 2663problem where mutex errors can occur when running a _REG method that is in 2664the same scope as a method-defined operation region or an operation region 2665under a module-level IF block. This type of code is rare, so the problem 2666has 2667not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore. 2668 2669Fixed a possible memory leak during module-level code execution. An object 2670could be leaked for each block of executed module-level code if the 2671interpreter slack mode is enabled This change deletes any implicitly 2672returned 2673object from the module-level code block. Lin Ming. 2674 2675Removed messages for successful predefined repair(s). The repair mechanism 2676was considered too wordy. Now, messages are only unconditionally emitted 2677if 2678the return object cannot be repaired. Existing messages for successful 2679repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ 2680827. 2681 2682Example Code and Data Size: These are the sizes for the OS-independent 2683acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2684debug version of the code includes the debug output trace mechanism and 2685has a 2686much larger code and data size. 2687 2688 Previous Release: 2689 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 2690 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 2691 Current Release: 2692 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 2693 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 2694 26952) iASL Compiler/Disassembler and Tools: 2696 2697iASL: Fixed a regression introduced in 20091112 where intermediate .SRC 2698files 2699were no longer automatically removed at the termination of the compile. 2700 2701acpiexec: Implemented the -f option to specify default region fill value. 2702This option specifies the value used to initialize buffers that simulate 2703operation regions. Default value is zero. Useful for debugging problems 2704that 2705depend on a specific initial value for a region or field. 2706 2707---------------------------------------- 270812 November 2009. Summary of changes for version 20091112: 2709 27101) ACPI CA Core Subsystem: 2711 2712Implemented a post-order callback to AcpiWalkNamespace. The existing 2713interface only has a pre-order callback. This change adds an additional 2714parameter for a post-order callback which will be more useful for bus 2715scans. 2716ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference. 2717 2718Modified the behavior of the operation region memory mapping cache for 2719SystemMemory. Ensure that the memory mappings created for operation 2720regions 2721do not cross 4K page boundaries. Crossing a page boundary while mapping 2722regions can cause kernel warnings on some hosts if the pages have 2723different 2724attributes. Such regions are probably BIOS bugs, and this is the 2725workaround. 2726Linux BZ 14445. Lin Ming. 2727 2728Implemented an automatic repair for predefined methods that must return 2729sorted lists. This change will repair (by sorting) packages returned by 2730_ALR, 2731_PSS, and _TSS. Drivers can now assume that the packages are correctly 2732sorted 2733and do not contain NULL package elements. Adds one new file, 2734namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore. 2735 2736Fixed a possible fault during predefined name validation if a return 2737Package 2738object contains NULL elements. Also adds a warning if a NULL element is 2739followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement 2740may 2741include repair or removal of all such NULL elements where possible. 2742 2743Implemented additional module-level executable AML code support. This 2744change 2745will execute module-level code that is not at the root of the namespace 2746(under a Device object, etc.) at table load time. Module-level executable 2747AML 2748code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming. 2749 2750Implemented a new internal function to create Integer objects. This 2751function 2752simplifies miscellaneous object creation code. ACPICA BZ 823. 2753 2754Reduced the severity of predefined repair messages, Warning to Info. Since 2755the object was successfully repaired, a warning is too severe. Reduced to 2756an 2757info message for now. These messages may eventually be changed to debug- 2758only. 2759ACPICA BZ 812. 2760 2761Example Code and Data Size: These are the sizes for the OS-independent 2762acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2763debug version of the code includes the debug output trace mechanism and 2764has a 2765much larger code and data size. 2766 2767 Previous Release: 2768 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 2769 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 2770 Current Release: 2771 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 2772 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 2773 27742) iASL Compiler/Disassembler and Tools: 2775 2776iASL: Implemented Switch() with While(1) so that Break works correctly. 2777This 2778change correctly implements the Switch operator with a surrounding 2779While(1) 2780so that the Break operator works as expected. ACPICA BZ 461. Lin Ming. 2781 2782iASL: Added a message if a package initializer list is shorter than 2783package 2784length. Adds a new remark for a Package() declaration if an initializer 2785list 2786exists, but is shorter than the declared length of the package. Although 2787technically legal, this is probably a coding error and it is seen in the 2788field. ACPICA BZ 815. Lin Ming, Bob Moore. 2789 2790iASL: Fixed a problem where the compiler could fault after the maximum 2791number 2792of errors was reached (200). 2793 2794acpixtract: Fixed a possible warning for pointer cast if the compiler 2795warning 2796level set very high. 2797 2798---------------------------------------- 279913 October 2009. Summary of changes for version 20091013: 2800 28011) ACPI CA Core Subsystem: 2802 2803Fixed a problem where an Operation Region _REG method could be executed 2804more 2805than once. If a custom address space handler is installed by the host 2806before 2807the "initialize operation regions" phase of the ACPICA initialization, any 2808_REG methods for that address space could be executed twice. This change 2809fixes the problem. ACPICA BZ 427. Lin Ming. 2810 2811Fixed a possible memory leak for the Scope() ASL operator. When the exact 2812invocation of "Scope(\)" is executed (change scope to root), one internal 2813operand object was leaked. Lin Ming. 2814 2815Implemented a run-time repair for the _MAT predefined method. If the _MAT 2816return value is defined as a Field object in the AML, and the field 2817size is less than or equal to the default width of an integer (32 or 281864),_MAT 2819can incorrectly return an Integer instead of a Buffer. ACPICA now 2820automatically repairs this problem. ACPICA BZ 810. 2821 2822Implemented a run-time repair for the _BIF and _BIX predefined methods. 2823The 2824"OEM Information" field is often incorrectly returned as an Integer with 2825value zero if the field is not supported by the platform. This is due to 2826an 2827ambiguity in the ACPI specification. The field should always be a string. 2828ACPICA now automatically repairs this problem by returning a NULL string 2829within the returned Package. ACPICA BZ 807. 2830 2831Example Code and Data Size: These are the sizes for the OS-independent 2832acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2833debug version of the code includes the debug output trace mechanism and 2834has a 2835much larger code and data size. 2836 2837 Previous Release: 2838 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 2839 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 2840 Current Release: 2841 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 2842 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 2843 28442) iASL Compiler/Disassembler and Tools: 2845 2846Disassembler: Fixed a problem where references to external symbols that 2847contained one or more parent-prefixes (carats) were not handled correctly, 2848possibly causing a fault. ACPICA BZ 806. Lin Ming. 2849 2850Disassembler: Restructured the code so that all functions that handle 2851external symbols are in a single module. One new file is added, 2852common/dmextern.c. 2853 2854AML Debugger: Added a max count argument for the Batch command (which 2855executes multiple predefined methods within the namespace.) 2856 2857iASL: Updated the compiler documentation (User Reference.) Available at 2858http://www.acpica.org/documentation/. ACPICA BZ 750. 2859 2860AcpiXtract: Updated for Lint and other formatting changes. Close all open 2861files. 2862 2863---------------------------------------- 286403 September 2009. Summary of changes for version 20090903: 2865 28661) ACPI CA Core Subsystem: 2867 2868For Windows Vista compatibility, added the automatic execution of an _INI 2869method located at the namespace root (\_INI). This method is executed at 2870table load time. This support is in addition to the automatic execution of 2871\_SB._INI. Lin Ming. 2872 2873Fixed a possible memory leak in the interpreter for AML package objects if 2874the package initializer list is longer than the defined size of the 2875package. 2876This apparently can only happen if the BIOS changes the package size on 2877the 2878fly (seen in a _PSS object), as ASL compilers do not allow this. The 2879interpreter will truncate the package to the defined size (and issue an 2880error 2881message), but previously could leave the extra objects undeleted if they 2882were 2883pre-created during the argument processing (such is the case if the 2884package 2885consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805. 2886 2887Fixed a problem seen when a Buffer or String is stored to itself via ASL. 2888This has been reported in the field. Previously, ACPICA would zero out the 2889buffer/string. Now, the operation is treated as a noop. Provides Windows 2890compatibility. ACPICA BZ 803. Lin Ming. 2891 2892Removed an extraneous error message for ASL constructs of the form 2893Store(LocalX,LocalX) when LocalX is uninitialized. These curious 2894statements 2895are seen in many BIOSs and are once again treated as NOOPs and no error is 2896emitted when they are encountered. ACPICA BZ 785. 2897 2898Fixed an extraneous warning message if a _DSM reserved method returns a 2899Package object. _DSM can return any type of object, so validation on the 2900return type cannot be performed. ACPICA BZ 802. 2901 2902Example Code and Data Size: These are the sizes for the OS-independent 2903acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2904debug version of the code includes the debug output trace mechanism and 2905has a 2906much larger code and data size. 2907 2908 Previous Release: 2909 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 2910 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 2911 Current Release: 2912 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 2913 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 2914 29152) iASL Compiler/Disassembler and Tools: 2916 2917iASL: Fixed a problem with the use of the Alias operator and Resource 2918Templates. The correct alias is now constructed and no error is emitted. 2919ACPICA BZ 738. 2920 2921iASL: Implemented the -I option to specify additional search directories 2922for 2923include files. Allows multiple additional search paths for include files. 2924Directories are searched in the order specified on the command line (after 2925the local directory is searched.) ACPICA BZ 800. 2926 2927iASL: Fixed a problem where the full pathname for include files was not 2928emitted for warnings/errors. This caused the IDE support to not work 2929properly. ACPICA BZ 765. 2930 2931iASL: Implemented the -@ option to specify a Windows-style response file 2932containing additional command line options. ACPICA BZ 801. 2933 2934AcpiExec: Added support to load multiple AML files simultaneously (such as 2935a 2936DSDT and multiple SSDTs). Also added support for wildcards within the AML 2937pathname. These features allow all machine tables to be easily loaded and 2938debugged together. ACPICA BZ 804. 2939 2940Disassembler: Added missing support for disassembly of HEST table Error 2941Bank 2942subtables. 2943 2944---------------------------------------- 294530 July 2009. Summary of changes for version 20090730: 2946 2947The ACPI 4.0 implementation for ACPICA is complete with this release. 2948 29491) ACPI CA Core Subsystem: 2950 2951ACPI 4.0: Added header file support for all new and changed ACPI tables. 2952Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are new 2953for ACPI 4.0, but have previously been supported in ACPICA are: CPEP, 2954BERT, 2955EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT. 2956There 2957have been some ACPI 4.0 changes to other existing tables. Split the large 2958actbl1.h header into the existing actbl2.h header. ACPICA BZ 774. 2959 2960ACPI 4.0: Implemented predefined name validation for all new names. There 2961are 296231 new names in ACPI 4.0. The predefined validation module was split into 2963two 2964files. The new file is namespace/nsrepair.c. ACPICA BZ 770. 2965 2966Implemented support for so-called "module-level executable code". This is 2967executable AML code that exists outside of any control method and is 2968intended 2969to be executed at table load time. Although illegal since ACPI 2.0, this 2970type 2971of code still exists and is apparently still being created. Blocks of this 2972code are now detected and executed as intended. Currently, the code blocks 2973must exist under either an If, Else, or While construct; these are the 2974typical cases seen in the field. ACPICA BZ 762. Lin Ming. 2975 2976Implemented an automatic dynamic repair for predefined names that return 2977nested Package objects. This applies to predefined names that are defined 2978to 2979return a variable-length Package of sub-packages. If the number of sub- 2980packages is one, BIOS code is occasionally seen that creates a simple 2981single 2982package with no sub-packages. This code attempts to fix the problem by 2983wrapping a new package object around the existing package. These methods 2984can 2985be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA BZ 2986790. 2987 2988Fixed a regression introduced in 20090625 for the AcpiGetDevices 2989interface. 2990The _HID/_CID matching was broken and no longer matched IDs correctly. 2991ACPICA 2992BZ 793. 2993 2994Fixed a problem with AcpiReset where the reset would silently fail if the 2995register was one of the protected I/O ports. AcpiReset now bypasses the 2996port 2997validation mechanism. This may eventually be driven into the 2998AcpiRead/Write 2999interfaces. 3000 3001Fixed a regression related to the recent update of the AcpiRead/Write 3002interfaces. A sleep/suspend could fail if the optional PM2 Control 3003register 3004does not exist during an attempt to write the Bus Master Arbitration bit. 3005(However, some hosts already delete the code that writes this bit, and the 3006code may in fact be obsolete at this date.) ACPICA BZ 799. 3007 3008Fixed a problem where AcpiTerminate could fault if inadvertently called 3009twice 3010in succession. ACPICA BZ 795. 3011 3012Example Code and Data Size: These are the sizes for the OS-independent 3013acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3014debug version of the code includes the debug output trace mechanism and 3015has a 3016much larger code and data size. 3017 3018 Previous Release: 3019 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 3020 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 3021 Current Release: 3022 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 3023 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 3024 30252) iASL Compiler/Disassembler and Tools: 3026 3027ACPI 4.0: Implemented disassembler support for all new ACPI tables and 3028changes to existing tables. ACPICA BZ 775. 3029 3030---------------------------------------- 303125 June 2009. Summary of changes for version 20090625: 3032 3033The ACPI 4.0 Specification was released on June 16 and is available at 3034www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will 3035continue for the next few releases. 3036 30371) ACPI CA Core Subsystem: 3038 3039ACPI 4.0: Implemented interpreter support for the IPMI operation region 3040address space. Includes support for bi-directional data buffers and an 3041IPMI 3042address space handler (to be installed by an IPMI device driver.) ACPICA 3043BZ 3044773. Lin Ming. 3045 3046ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT. Includes 3047support in both the header files and the disassembler. 3048 3049Completed a major update for the AcpiGetObjectInfo external interface. 3050Changes include: 3051 - Support for variable, unlimited length HID, UID, and CID strings. 3052 - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA, 3053etc.) 3054 - Call the _SxW power methods on behalf of a device object. 3055 - Determine if a device is a PCI root bridge. 3056 - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO. 3057These changes will require an update to all callers of this interface. See 3058the updated ACPICA Programmer Reference for details. One new source file 3059has 3060been added - utilities/utids.c. ACPICA BZ 368, 780. 3061 3062Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit 3063transfers. The Value parameter has been extended from 32 bits to 64 bits 3064in 3065order to support new ACPI 4.0 tables. These changes will require an update 3066to 3067all callers of these interfaces. See the ACPICA Programmer Reference for 3068details. ACPICA BZ 768. 3069 3070Fixed several problems with AcpiAttachData. The handler was not invoked 3071when 3072the host node was deleted. The data sub-object was not automatically 3073deleted 3074when the host node was deleted. The interface to the handler had an unused 3075parameter, this was removed. ACPICA BZ 778. 3076 3077Enhanced the function that dumps ACPI table headers. All non-printable 3078characters in the string fields are now replaced with '?' (Signature, 3079OemId, 3080OemTableId, and CompilerId.) ACPI tables with non-printable characters in 3081these fields are occasionally seen in the field. ACPICA BZ 788. 3082 3083Fixed a problem with predefined method repair code where the code that 3084attempts to repair/convert an object of incorrect type is only executed on 3085the first time the predefined method is called. The mechanism that 3086disables 3087warnings on subsequent calls was interfering with the repair mechanism. 3088ACPICA BZ 781. 3089 3090Fixed a possible memory leak in the predefined validation/repair code when 3091a 3092buffer is automatically converted to an expected string object. 3093 3094Removed obsolete 16-bit files from the distribution and from the current 3095git 3096tree head. ACPICA BZ 776. 3097 3098Example Code and Data Size: These are the sizes for the OS-independent 3099acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3100debug version of the code includes the debug output trace mechanism and 3101has a 3102much larger code and data size. 3103 3104 Previous Release: 3105 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 3106 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 3107 Current Release: 3108 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 3109 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 3110 31112) iASL Compiler/Disassembler and Tools: 3112 3113ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI 3114operation region keyword. ACPICA BZ 771, 772. Lin Ming. 3115 3116ACPI 4.0: iASL - implemented compile-time validation support for all new 3117predefined names and control methods (31 total). ACPICA BZ 769. 3118 3119---------------------------------------- 312021 May 2009. Summary of changes for version 20090521: 3121 31221) ACPI CA Core Subsystem: 3123 3124Disabled the preservation of the SCI enable bit in the PM1 control 3125register. 3126The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification to 3127be 3128a "preserved" bit - "OSPM always preserves this bit position", section 31294.7.3.2.1. However, some machines fail if this bit is in fact preserved 3130because the bit needs to be explicitly set by the OS as a workaround. No 3131machines fail if the bit is not preserved. Therefore, ACPICA no longer 3132attempts to preserve this bit. 3133 3134Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or 3135incorrectly formed _PRT package could cause a fault. Added validation to 3136ensure that each package element is actually a sub-package. 3137 3138Implemented a new interface to install or override a single control 3139method, 3140AcpiInstallMethod. This interface is useful when debugging in order to 3141repair 3142an existing method or to install a missing method without having to 3143override 3144the entire ACPI table. See the ACPICA Programmer Reference for use and 3145examples. Lin Ming, Bob Moore. 3146 3147Fixed several reference count issues with the DdbHandle object that is 3148created from a Load or LoadTable operator. Prevent premature deletion of 3149the 3150object. Also, mark the object as invalid once the table has been unloaded. 3151This is needed because the handle itself may not be deleted after the 3152table 3153unload, depending on whether it has been stored in a named object by the 3154caller. Lin Ming. 3155 3156Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple 3157mutexes of the same sync level are acquired but then not released in 3158strict 3159opposite order, the internally maintained Current Sync Level becomes 3160confused 3161and can cause subsequent execution errors. ACPICA BZ 471. 3162 3163Changed the allowable release order for ASL mutex objects. The ACPI 4.0 3164specification has been changed to make the SyncLevel for mutex objects 3165more 3166useful. When releasing a mutex, the SyncLevel of the mutex must now be the 3167same as the current sync level. This makes more sense than the previous 3168rule 3169(SyncLevel less than or equal). This change updates the code to match the 3170specification. 3171 3172Fixed a problem with the local version of the AcpiOsPurgeCache function. 3173The 3174(local) cache must be locked during all cache object deletions. Andrew 3175Baumann. 3176 3177Updated the Load operator to use operation region interfaces. This 3178replaces 3179direct memory mapping with region access calls. Now, all region accesses 3180go 3181through the installed region handler as they should. 3182 3183Simplified and optimized the NsGetNextNode function. Reduced parameter 3184count 3185and reduced code for this frequently used function. 3186 3187Example Code and Data Size: These are the sizes for the OS-independent 3188acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3189debug version of the code includes the debug output trace mechanism and 3190has a 3191much larger code and data size. 3192 3193 Previous Release: 3194 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 3195 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 3196 Current Release: 3197 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 3198 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 3199 32002) iASL Compiler/Disassembler and Tools: 3201 3202Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some 3203problems 3204with sub-table disassembly and handling invalid sub-tables. Attempt 3205recovery 3206after an invalid sub-table ID. 3207 3208---------------------------------------- 320922 April 2009. Summary of changes for version 20090422: 3210 32111) ACPI CA Core Subsystem: 3212 3213Fixed a compatibility issue with the recently released I/O port protection 3214mechanism. For windows compatibility, 1) On a port protection violation, 3215simply ignore the request and do not return an exception (allow the 3216control 3217method to continue execution.) 2) If only part of the request overlaps a 3218protected port, read/write the individual ports that are not protected. 3219Linux 3220BZ 13036. Lin Ming 3221 3222Enhanced the execution of the ASL/AML BreakPoint operator so that it 3223actually 3224breaks into the AML debugger if the debugger is present. This matches the 3225ACPI-defined behavior. 3226 3227Fixed several possible warnings related to the use of the configurable 3228ACPI_THREAD_ID. This type can now be configured as either an integer or a 3229pointer with no warnings. Also fixes several warnings in printf-like 3230statements for the 64-bit build when the type is configured as a pointer. 3231ACPICA BZ 766, 767. 3232 3233Fixed a number of possible warnings when compiling with gcc 4+ (depending 3234on 3235warning options.) Examples include printf formats, aliasing, unused 3236globals, 3237missing prototypes, missing switch default statements, use of non-ANSI 3238library functions, use of non-ANSI constructs. See generate/unix/Makefile 3239for 3240a list of warning options used with gcc 3 and 4. ACPICA BZ 735. 3241 3242Example Code and Data Size: These are the sizes for the OS-independent 3243acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3244debug version of the code includes the debug output trace mechanism and 3245has a 3246much larger code and data size. 3247 3248 Previous Release: 3249 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 3250 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 3251 Current Release: 3252 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 3253 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 3254 32552) iASL Compiler/Disassembler and Tools: 3256 3257iASL: Fixed a generation warning from Bison 2.3 and fixed several warnings 3258on 3259the 64-bit build. 3260 3261iASL: Fixed a problem where the Unix/Linux versions of the compiler could 3262not 3263correctly digest Windows/DOS formatted files (with CR/LF). 3264 3265iASL: Added a new option for "quiet mode" (-va) that produces only the 3266compilation summary, not individual errors and warnings. Useful for large 3267batch compilations. 3268 3269AcpiExec: Implemented a new option (-z) to enable a forced semaphore/mutex 3270timeout that can be used to detect hang conditions during execution of AML 3271code (includes both internal semaphores and AML-defined mutexes and 3272events.) 3273 3274Added new makefiles for the generation of acpica in a generic unix-like 3275environment. These makefiles are intended to generate the acpica tools and 3276utilities from the original acpica git source tree structure. 3277 3278Test Suites: Updated and cleaned up the documentation files. Updated the 3279copyrights to 2009, affecting all source files. Use the new version of 3280iASL 3281with quiet mode. Increased the number of available semaphores in the 3282Windows 3283OSL, allowing the aslts to execute fully on Windows. For the Unix OSL, 3284added 3285an alternate implementation of the semaphore timeout to allow aslts to 3286execute fully on Cygwin. 3287 3288---------------------------------------- 328920 March 2009. Summary of changes for version 20090320: 3290 32911) ACPI CA Core Subsystem: 3292 3293Fixed a possible race condition between AcpiWalkNamespace and dynamic 3294table 3295unloads. Added a reader/writer locking mechanism to allow multiple 3296concurrent 3297namespace walks (readers), but block a dynamic table unload until it can 3298gain 3299exclusive write access to the namespace. This fixes a problem where a 3300table 3301unload could (possibly catastrophically) delete the portion of the 3302namespace 3303that is currently being examined by a walk. Adds a new file, utlock.c, 3304that 3305implements the reader/writer lock mechanism. ACPICA BZ 749. 3306 3307Fixed a regression introduced in version 20090220 where a change to the 3308FADT 3309handling could cause the ACPICA subsystem to access non-existent I/O 3310ports. 3311 3312Modified the handling of FADT register and table (FACS/DSDT) addresses. 3313The 3314FADT can contain both 32-bit and 64-bit versions of these addresses. 3315Previously, the 64-bit versions were favored, meaning that if both 32 and 331664 3317versions were valid, but not equal, the 64-bit version was used. This was 3318found to cause some machines to fail. Now, in this case, the 32-bit 3319version 3320is used instead. This now matches the Windows behavior. 3321 3322Implemented a new mechanism to protect certain I/O ports. Provides 3323Microsoft 3324compatibility and protects the standard PC I/O ports from access via AML 3325code. Adds a new file, hwvalid.c 3326 3327Fixed a possible extraneous warning message from the FADT support. The 3328message warns of a 32/64 length mismatch between the legacy and GAS 3329definitions for a register. 3330 3331Removed the obsolete AcpiOsValidateAddress OSL interface. This interface 3332is 3333made obsolete by the port protection mechanism above. It was previously 3334used 3335to validate the entire address range of an operation region, which could 3336be 3337incorrect if the range included illegal ports, but fields within the 3338operation region did not actually access those ports. Validation is now 3339performed on a per-field basis instead of the entire region. 3340 3341Modified the handling of the PM1 Status Register ignored bit (bit 11.) 3342Ignored bits must be "preserved" according to the ACPI spec. Usually, this 3343means a read/modify/write when writing to the register. However, for 3344status 3345registers, writing a one means clear the event. Writing a zero means 3346preserve 3347the event (do not clear.) This behavior is clarified in the ACPI 4.0 spec, 3348and the ACPICA code now simply always writes a zero to the ignored bit. 3349 3350Modified the handling of ignored bits for the PM1 A/B Control Registers. 3351As 3352per the ACPI specification, for the control registers, preserve 3353(read/modify/write) all bits that are defined as either reserved or 3354ignored. 3355 3356Updated the handling of write-only bits in the PM1 A/B Control Registers. 3357When reading the register, zero the write-only bits as per the ACPI spec. 3358ACPICA BZ 443. Lin Ming. 3359 3360Removed "Linux" from the list of supported _OSI strings. Linux no longer 3361wants to reply true to this request. The Windows strings are the only 3362paths 3363through the AML that are tested and known to work properly. 3364 3365 Previous Release: 3366 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 3367 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 3368 Current Release: 3369 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 3370 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 3371 33722) iASL Compiler/Disassembler and Tools: 3373 3374Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c 3375and 3376aetables.c 3377 3378---------------------------------------- 337920 February 2009. Summary of changes for version 20090220: 3380 33811) ACPI CA Core Subsystem: 3382 3383Optimized the ACPI register locking. Removed locking for reads from the 3384ACPI 3385bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock is 3386not required when reading the single-bit registers. The 3387AcpiGetRegisterUnlocked function is no longer needed and has been removed. 3388This will improve performance for reads on these registers. ACPICA BZ 760. 3389 3390Fixed the parameter validation for AcpiRead/Write. Now return 3391AE_BAD_PARAMETER if the input register pointer is null, and AE_BAD_ADDRESS 3392if 3393the register has an address of zero. Previously, these cases simply 3394returned 3395AE_OK. For optional registers such as PM1B status/enable/control, the 3396caller 3397should check for a valid register address before calling. ACPICA BZ 748. 3398 3399Renamed the external ACPI bit register access functions. Renamed 3400AcpiGetRegister and AcpiSetRegister to clarify the purpose of these 3401functions. The new names are AcpiReadBitRegister and AcpiWriteBitRegister. 3402Also, restructured the code for these functions by simplifying the code 3403path 3404and condensing duplicate code to reduce code size. 3405 3406Added new functions to transparently handle the possibly split PM1 A/B 3407registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two functions 3408now handle the split registers for PM1 Status, Enable, and Control. ACPICA 3409BZ 3410746. 3411 3412Added a function to handle the PM1 control registers, 3413AcpiHwWritePm1Control. 3414This function writes both of the PM1 control registers (A/B). These 3415registers 3416are different than the PM1 A/B status and enable registers in that 3417different 3418values can be written to the A/B registers. Most notably, the SLP_TYP bits 3419can be different, as per the values returned from the _Sx predefined 3420methods. 3421 3422Removed an extra register write within AcpiHwClearAcpiStatus. This 3423function 3424was writing an optional PM1B status register twice. The existing call to 3425the 3426low-level AcpiHwRegisterWrite automatically handles a possibly split PM1 3427A/B 3428register. ACPICA BZ 751. 3429 3430Split out the PM1 Status registers from the FADT. Added new globals for 3431these 3432registers (A/B), similar to the way the PM1 Enable registers are handled. 3433Instead of overloading the FADT Event Register blocks. This makes the code 3434clearer and less prone to error. 3435 3436Fixed the warning message for when the platform contains too many ACPI 3437tables 3438for the default size of the global root table data structure. The 3439calculation 3440for the truncation value was incorrect. 3441 3442Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this 3443obsolete macro, since it is now a simple reference to ->common.type. There 3444were about 150 invocations of the macro across 41 files. ACPICA BZ 755. 3445 3446Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as 3447TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to 3448simply SLEEP_TYPE. ACPICA BZ 754. 3449 3450Conditionally compile the AcpiSetFirmwareWakingVector64 function. This 3451function is only needed on 64-bit host operating systems and is thus not 3452included for 32-bit hosts. 3453 3454Debug output: print the input and result for invocations of the _OSI 3455reserved 3456control method via the ACPI_LV_INFO debug level. Also, reduced some of the 3457verbosity of this debug level. Len Brown. 3458 3459Example Code and Data Size: These are the sizes for the OS-independent 3460acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3461debug version of the code includes the debug output trace mechanism and 3462has a 3463much larger code and data size. 3464 3465 Previous Release: 3466 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 3467 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 3468 Current Release: 3469 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 3470 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 3471 34722) iASL Compiler/Disassembler and Tools: 3473 3474Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the 3475various legal performance profiles. 3476 3477---------------------------------------- 347823 January 2009. Summary of changes for version 20090123: 3479 34801) ACPI CA Core Subsystem: 3481 3482Added the 2009 copyright to all module headers and signons. This affects 3483virtually every file in the ACPICA core subsystem, the iASL compiler, and 3484the tools/utilities. 3485 3486Implemented a change to allow the host to override any ACPI table, 3487including 3488dynamically loaded tables. Previously, only the DSDT could be replaced by 3489the 3490host. With this change, the AcpiOsTableOverride interface is called for 3491each 3492table found in the RSDT/XSDT during ACPICA initialization, and also 3493whenever 3494a table is dynamically loaded via the AML Load operator. 3495 3496Updated FADT flag definitions, especially the Boot Architecture flags. 3497 3498Debugger: For the Find command, automatically pad the input ACPI name with 3499underscores if the name is shorter than 4 characters. This enables a match 3500with the actual namespace entry which is itself padded with underscores. 3501 3502Example Code and Data Size: These are the sizes for the OS-independent 3503acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3504debug version of the code includes the debug output trace mechanism and 3505has a 3506much larger code and data size. 3507 3508 Previous Release: 3509 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 3510 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 3511 Current Release: 3512 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 3513 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 3514 35152) iASL Compiler/Disassembler and Tools: 3516 3517Fix build error under Bison-2.4. 3518 3519Dissasembler: Enhanced FADT support. Added decoding of the Boot 3520Architecture 3521flags. Now decode all flags, regardless of the FADT version. Flag output 3522includes the FADT version which first defined each flag. 3523 3524The iASL -g option now dumps the RSDT to a file (in addition to the FADT 3525and 3526DSDT). Windows only. 3527 3528---------------------------------------- 352904 December 2008. Summary of changes for version 20081204: 3530 35311) ACPI CA Core Subsystem: 3532 3533The ACPICA Programmer Reference has been completely updated and revamped 3534for 3535this release. This includes updates to the external interfaces, OSL 3536interfaces, the overview sections, and the debugger reference. 3537 3538Several new ACPICA interfaces have been implemented and documented in the 3539programmer reference: 3540AcpiReset - Writes the reset value to the FADT-defined reset register. 3541AcpiDisableAllGpes - Disable all available GPEs. 3542AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs. 3543AcpiGetGpeDevice - Get the GPE block device associated with a GPE. 3544AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs. 3545AcpiRead - Low-level read ACPI register (was HwLowLevelRead.) 3546AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.) 3547 3548Most of the public ACPI hardware-related interfaces have been moved to a 3549new 3550file, components/hardware/hwxface.c 3551 3552Enhanced the FADT parsing and low-level ACPI register access: The ACPI 3553register lengths within the FADT are now used, and the low level ACPI 3554register access no longer hardcodes the ACPI register lengths. Given that 3555there may be some risk in actually trusting the FADT register lengths, a 3556run- 3557time option was added to fall back to the default hardcoded lengths if the 3558FADT proves to contain incorrect values - UseDefaultRegisterWidths. This 3559option is set to true for now, and a warning is issued if a suspicious 3560FADT 3561register length is overridden with the default value. 3562 3563Fixed a reference count issue in NsRepairObject. This problem was 3564introduced 3565in version 20081031 as part of a fix to repair Buffer objects within 3566Packages. Lin Ming. 3567 3568Added semaphore support to the Linux/Unix application OS-services layer 3569(OSL). ACPICA BZ 448. Lin Ming. 3570 3571Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes 3572will 3573be implemented in the OSL, or will binary semaphores be used instead. 3574 3575Example Code and Data Size: These are the sizes for the OS-independent 3576acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3577debug version of the code includes the debug output trace mechanism and 3578has a 3579much larger code and data size. 3580 3581 Previous Release: 3582 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 3583 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 3584 Current Release: 3585 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 3586 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 3587 35882) iASL Compiler/Disassembler and Tools: 3589 3590iASL: Completed the '-e' option to include additional ACPI tables in order 3591to 3592aid with disassembly and External statement generation. ACPICA BZ 742. Lin 3593Ming. 3594 3595iASL: Removed the "named object in while loop" error. The compiler cannot 3596determine how many times a loop will execute. ACPICA BZ 730. 3597 3598Disassembler: Implemented support for FADT revision 2 (MS extension). 3599ACPICA 3600BZ 743. 3601 3602Disassembler: Updates for several ACPI data tables (HEST, EINJ, and MCFG). 3603 3604---------------------------------------- 360531 October 2008. Summary of changes for version 20081031: 3606 36071) ACPI CA Core Subsystem: 3608 3609Restructured the ACPICA header files into public/private. acpi.h now 3610includes 3611only the "public" acpica headers. All other acpica headers are "private" 3612and 3613should not be included by acpica users. One new file, accommon.h is used 3614to 3615include the commonly used private headers for acpica code generation. 3616Future 3617plans include moving all private headers to a new subdirectory. 3618 3619Implemented an automatic Buffer->String return value conversion for 3620predefined ACPI methods. For these methods (such as _BIF), added automatic 3621conversion for return objects that are required to be a String, but a 3622Buffer 3623was found instead. This can happen when reading string battery data from 3624an 3625operation region, because it used to be difficult to convert the data from 3626buffer to string from within the ASL. Ensures that the host OS is provided 3627with a valid null-terminated string. Linux BZ 11822. 3628 3629Updated the FACS waking vector interfaces. Split 3630AcpiSetFirmwareWakingVector 3631into two: one for the 32-bit vector, another for the 64-bit vector. This 3632is 3633required because the host OS must setup the wake much differently for each 3634vector (real vs. protected mode, etc.) and the interface itself should not 3635be 3636deciding which vector to use. Also, eliminated the GetFirmwareWakingVector 3637interface, as it served no purpose (only the firmware reads the vector, OS 3638only writes the vector.) ACPICA BZ 731. 3639 3640Implemented a mechanism to escape infinite AML While() loops. Added a loop 3641counter to force exit from AML While loops if the count becomes too large. 3642This can occur in poorly written AML when the hardware does not respond 3643within a while loop and the loop does not implement a timeout. The maximum 3644loop count is configurable. A new exception code is returned when a loop 3645is 3646broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore. 3647 3648Optimized the execution of AML While loops. Previously, a control state 3649object was allocated and freed for each execution of the loop. The 3650optimization is to simply reuse the control state for each iteration. This 3651speeds up the raw loop execution time by about 5%. 3652 3653Enhanced the implicit return mechanism. For Windows compatibility, return 3654an 3655implicit integer of value zero for methods that contain no executable 3656code. 3657Such methods are seen in the field as stubs (presumably), and can cause 3658drivers to fail if they expect a return value. Lin Ming. 3659 3660Allow multiple backslashes as root prefixes in namepaths. In a fully 3661qualified namepath, allow multiple backslash prefixes. This can happen 3662(and 3663is seen in the field) because of the use of a double-backslash in strings 3664(since backslash is the escape character) causing confusion. ACPICA BZ 739 3665Lin Ming. 3666 3667Emit a warning if two different FACS or DSDT tables are discovered in the 3668FADT. Checks if there are two valid but different addresses for the FACS 3669and 3670DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.) 3671 3672Consolidated the method argument count validation code. Merged the code 3673that 3674validates control method argument counts into the predefined validation 3675module. Eliminates possible multiple warnings for incorrect argument 3676counts. 3677 3678Implemented ACPICA example code. Includes code for ACPICA initialization, 3679handler installation, and calling a control method. Available at 3680source/tools/examples. 3681 3682Added a global pointer for FACS table to simplify internal FACS access. 3683Use 3684the global pointer instead of using AcpiGetTableByIndex for each FACS 3685access. 3686This simplifies the code for the Global Lock and the Firmware Waking 3687Vector(s). 3688 3689Example Code and Data Size: These are the sizes for the OS-independent 3690acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3691debug version of the code includes the debug output trace mechanism and 3692has a 3693much larger code and data size. 3694 3695 Previous Release: 3696 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 3697 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 3698 Current Release: 3699 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 3700 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 3701 37022) iASL Compiler/Disassembler and Tools: 3703 3704iASL: Improved disassembly of external method calls. Added the -e option 3705to 3706allow the inclusion of additional ACPI tables to help with the disassembly 3707of 3708method invocations and the generation of external declarations during the 3709disassembly. Certain external method invocations cannot be disassembled 3710properly without the actual declaration of the method. Use the -e option 3711to 3712include the table where the external method(s) are actually declared. Most 3713useful for disassembling SSDTs that make method calls back to the master 3714DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl 3715-d 3716-e dsdt.aml ssdt1.aml 3717 3718iASL: Fix to allow references to aliases within ASL namepaths. Fixes a 3719problem where the use of an alias within a namepath would result in a not 3720found error or cause the compiler to fault. Also now allows forward 3721references from the Alias operator itself. ACPICA BZ 738. 3722 3723---------------------------------------- 372426 September 2008. Summary of changes for version 20080926: 3725 37261) ACPI CA Core Subsystem: 3727 3728Designed and implemented a mechanism to validate predefined ACPI methods 3729and 3730objects. This code validates the predefined ACPI objects (objects whose 3731names 3732start with underscore) that appear in the namespace, at the time they are 3733evaluated. The argument count and the type of the returned object are 3734validated against the ACPI specification. The purpose of this validation 3735is 3736to detect problems with the BIOS-implemented predefined ACPI objects 3737before 3738the results are returned to the ACPI-related drivers. Future enhancements 3739may 3740include actual repair of incorrect return objects where possible. Two new 3741files are nspredef.c and acpredef.h. 3742 3743Fixed a fault in the AML parser if a memory allocation fails during the Op 3744completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492. 3745 3746Fixed an issue with implicit return compatibility. This change improves 3747the 3748implicit return mechanism to be more compatible with the MS interpreter. 3749Lin 3750Ming, ACPICA BZ 349. 3751 3752Implemented support for zero-length buffer-to-string conversions. Allow 3753zero 3754length strings during interpreter buffer-to-string conversions. For 3755example, 3756during the ToDecimalString and ToHexString operators, as well as implicit 3757conversions. Fiodor Suietov, ACPICA BZ 585. 3758 3759Fixed two possible memory leaks in the error exit paths of 3760AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions are 3761similar in that they use a stack of state objects in order to eliminate 3762recursion. The stack must be fully unwound and deallocated if an error 3763occurs. Lin Ming. ACPICA BZ 383. 3764 3765Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the 3766global 3767ACPI register table. This bit does not exist and is unused. Lin Ming, Bob 3768Moore ACPICA BZ 442. 3769 3770Removed the obsolete version number in module headers. Removed the 3771"$Revision" number that appeared in each module header. This version 3772number 3773was useful under SourceSafe and CVS, but has no meaning under git. It is 3774not 3775only incorrect, it could also be misleading. 3776 3777Example Code and Data Size: These are the sizes for the OS-independent 3778acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3779debug version of the code includes the debug output trace mechanism and 3780has a 3781much larger code and data size. 3782 3783 Previous Release: 3784 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 3785 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 3786 Current Release: 3787 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 3788 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 3789 3790---------------------------------------- 379129 August 2008. Summary of changes for version 20080829: 3792 37931) ACPI CA Core Subsystem: 3794 3795Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type 3796Reference. Changes include the elimination of cheating on the Object field 3797for the DdbHandle subtype, addition of a reference class field to 3798differentiate the various reference types (instead of an AML opcode), and 3799the 3800cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723 3801 3802Reduce an error to a warning for an incorrect method argument count. 3803Previously aborted with an error if too few arguments were passed to a 3804control method via the external ACPICA interface. Now issue a warning 3805instead 3806and continue. Handles the case where the method inadvertently declares too 3807many arguments, but does not actually use the extra ones. Applies mainly 3808to 3809the predefined methods. Lin Ming. Linux BZ 11032. 3810 3811Disallow the evaluation of named object types with no intrinsic value. 3812Return 3813AE_TYPE for objects that have no value and therefore evaluation is 3814undefined: 3815Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation 3816of 3817these types were allowed, but an exception would be generated at some 3818point 3819during the evaluation. Now, the error is generated up front. 3820 3821Fixed a possible memory leak in the AcpiNsGetExternalPathname function 3822(nsnames.c). Fixes a leak in the error exit path. 3823 3824Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These 3825debug 3826levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and 3827ACPI_EXCEPTION 3828interfaces. Also added ACPI_DB_EVENTS to correspond with the existing 3829ACPI_LV_EVENTS. 3830 3831Removed obsolete and/or unused exception codes from the acexcep.h header. 3832There is the possibility that certain device drivers may be affected if 3833they 3834use any of these exceptions. 3835 3836The ACPICA documentation has been added to the public git source tree, 3837under 3838acpica/documents. Included are the ACPICA programmer reference, the iASL 3839compiler reference, and the changes.txt release logfile. 3840 3841Example Code and Data Size: These are the sizes for the OS-independent 3842acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3843debug version of the code includes the debug output trace mechanism and 3844has a 3845much larger code and data size. 3846 3847 Previous Release: 3848 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 3849 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 3850 Current Release: 3851 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 3852 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 3853 38542) iASL Compiler/Disassembler and Tools: 3855 3856Allow multiple argument counts for the predefined _SCP method. ACPI 3.0 3857defines _SCP with 3 arguments. Previous versions defined it with only 1 3858argument. iASL now allows both definitions. 3859 3860iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for zero- 3861length subtables when disassembling ACPI tables. Also fixed a couple of 3862errors where a full 16-bit table type field was not extracted from the 3863input 3864properly. 3865 3866acpisrc: Improve comment counting mechanism for generating source code 3867statistics. Count first and last lines of multi-line comments as 3868whitespace, 3869not comment lines. Handle Linux legal header in addition to standard 3870acpica 3871header. 3872 3873---------------------------------------- 3874 387529 July 2008. Summary of changes for version 20080729: 3876 38771) ACPI CA Core Subsystem: 3878 3879Fix a possible deadlock in the GPE dispatch. Remove call to 3880AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will 3881attempt 3882to acquire the GPE lock but can deadlock since the GPE lock is already 3883held 3884at dispatch time. This code was introduced in version 20060831 as a 3885response 3886to Linux BZ 6881 and has since been removed from Linux. 3887 3888Add a function to dereference returned reference objects. Examines the 3889return 3890object from a call to AcpiEvaluateObject. Any Index or RefOf references 3891are 3892automatically dereferenced in an attempt to return something useful (these 3893reference types cannot be converted into an external ACPI_OBJECT.) 3894Provides 3895MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105 3896 3897x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new 3898subtables for the MADT and one new subtable for the SRAT. Includes 3899disassembler and AcpiSrc support. Data from the Intel 64 Architecture 3900x2APIC 3901Specification, June 2008. 3902 3903Additional error checking for pathname utilities. Add error check after 3904all 3905calls to AcpiNsGetPathnameLength. Add status return from 3906AcpiNsBuildExternalPath and check after all calls. Add parameter 3907validation 3908to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar. 3909 3910Return status from the global init function AcpiUtGlobalInitialize. This 3911is 3912used by both the kernel subsystem and the utilities such as iASL compiler. 3913The function could possibly fail when the caches are initialized. Yang Yi. 3914 3915Add a function to decode reference object types to strings. Created for 3916improved error messages. 3917 3918Improve object conversion error messages. Better error messages during 3919object 3920conversion from internal to the external ACPI_OBJECT. Used for external 3921calls 3922to AcpiEvaluateObject. 3923 3924Example Code and Data Size: These are the sizes for the OS-independent 3925acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3926debug version of the code includes the debug output trace mechanism and 3927has a 3928much larger code and data size. 3929 3930 Previous Release: 3931 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 3932 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 3933 Current Release: 3934 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 3935 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 3936 39372) iASL Compiler/Disassembler and Tools: 3938 3939Debugger: fix a possible hang when evaluating non-methods. Fixes a problem 3940introduced in version 20080701. If the object being evaluated (via execute 3941command) is not a method, the debugger can hang while trying to obtain 3942non- 3943existent parameters. 3944 3945iASL: relax error for using reserved "_T_x" identifiers. These names can 3946appear in a disassembled ASL file if they were emitted by the original 3947compiler. Instead of issuing an error or warning and forcing the user to 3948manually change these names, issue a remark instead. 3949 3950iASL: error if named object created in while loop. Emit an error if any 3951named 3952object is created within a While loop. If allowed, this code will generate 3953a 3954run-time error on the second iteration of the loop when an attempt is made 3955to 3956create the same named object twice. ACPICA bugzilla 730. 3957 3958iASL: Support absolute pathnames for include files. Add support for 3959absolute 3960pathnames within the Include operator. previously, only relative pathnames 3961were supported. 3962 3963iASL: Enforce minimum 1 interrupt in interrupt macro and Resource 3964Descriptor. 3965The ACPI spec requires one interrupt minimum. BZ 423 3966 3967iASL: Handle a missing ResourceSource arg, with a present SourceIndex. 3968Handles the case for the Interrupt Resource Descriptor where 3969the ResourceSource argument is omitted but ResourceSourceIndex 3970is present. Now leave room for the Index. BZ 426 3971 3972iASL: Prevent error message if CondRefOf target does not exist. Fixes 3973cases 3974where an error message is emitted if the target does not exist. BZ 516 3975 3976iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option 3977(get ACPI tables on Windows). This was apparently broken in version 397820070919. 3979 3980AcpiXtract: Handle EOF while extracting data. Correctly handle the case 3981where 3982the EOF happens immediately after the last table in the input file. Print 3983completion message. Previously, no message was displayed in this case. 3984 3985---------------------------------------- 398601 July 2008. Summary of changes for version 20080701: 3987 39880) Git source tree / acpica.org 3989 3990Fixed a problem where a git-clone from http would not transfer the entire 3991source tree. 3992 39931) ACPI CA Core Subsystem: 3994 3995Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one 3996enable bit. Now performs a read-change-write of the enable register 3997instead 3998of simply writing out the cached enable mask. This will prevent 3999inadvertent 4000enabling of GPEs if a rogue GPE is received during initialization (before 4001GPE 4002handlers are installed.) 4003 4004Implemented a copy for dynamically loaded tables. Previously, dynamically 4005loaded tables were simply mapped - but on some machines this memory is 4006corrupted after suspend. Now copy the table to a local buffer. For the 4007OpRegion case, added checksum verify. Use the table length from the table 4008header, not the region length. For the Buffer case, use the table length 4009also. Dennis Noordsij, Bob Moore. BZ 10734 4010 4011Fixed a problem where the same ACPI table could not be dynamically loaded 4012and 4013unloaded more than once. Without this change, a table cannot be loaded 4014again 4015once it has been loaded/unloaded one time. The current mechanism does not 4016unregister a table upon an unload. During a load, if the same table is 4017found, 4018this no longer returns an exception. BZ 722 4019 4020Fixed a problem where the wrong descriptor length was calculated for the 4021EndTag descriptor in 64-bit mode. The "minimal" descriptors such as EndTag 4022are calculated as 12 bytes long, but the actual length in the internal 4023descriptor is 16 because of the round-up to 8 on the 64-bit build. 4024Reported 4025by Linn Crosetto. BZ 728 4026 4027Fixed a possible memory leak in the Unload operator. The DdbHandle 4028returned 4029by Load() did not have its reference count decremented during unload, 4030leading 4031to a memory leak. Lin Ming. BZ 727 4032 4033Fixed a possible memory leak when deleting thermal/processor objects. Any 4034associated notify handlers (and objects) were not being deleted. Fiodor 4035Suietov. BZ 506 4036 4037Fixed the ordering of the ASCII names in the global mutex table to match 4038the 4039actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug 4040only. 4041Vegard Nossum. BZ 726 4042 4043Enhanced the AcpiGetObjectInfo interface to return the number of required 4044arguments if the object is a control method. Added this call to the 4045debugger 4046so the proper number of default arguments are passed to a method. This 4047prevents a warning when executing methods from AcpiExec. 4048 4049Added a check for an invalid handle in AcpiGetObjectInfo. Return 4050AE_BAD_PARAMETER if input handle is invalid. BZ 474 4051 4052Fixed an extraneous warning from exconfig.c on the 64-bit build. 4053 4054Example Code and Data Size: These are the sizes for the OS-independent 4055acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4056debug version of the code includes the debug output trace mechanism and 4057has a 4058much larger code and data size. 4059 4060 Previous Release: 4061 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 4062 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 4063 Current Release: 4064 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 4065 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 4066 40672) iASL Compiler/Disassembler and Tools: 4068 4069iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both 4070resource descriptor names. 4071 4072iASL: Detect invalid ASCII characters in input (windows version). Removed 4073the 4074"-CF" flag from the flex compile, enables correct detection of non-ASCII 4075characters in the input. BZ 441 4076 4077iASL: Eliminate warning when result of LoadTable is not used. Eliminate 4078the 4079"result of operation not used" warning when the DDB handle returned from 4080LoadTable is not used. The warning is not needed. BZ 590 4081 4082AcpiExec: Add support for dynamic table load/unload. Now calls _CFG method 4083to 4084pass address of table to the AML. Added option to disable OpRegion 4085simulation 4086to allow creation of an OpRegion with a real address that was passed to 4087_CFG. 4088All of this allows testing of the Load and Unload operators from AcpiExec. 4089 4090Debugger: update tables command for unloaded tables. Handle unloaded 4091tables 4092and use the standard table header output routine. 4093 4094---------------------------------------- 409509 June 2008. Summary of changes for version 20080609: 4096 40971) ACPI CA Core Subsystem: 4098 4099Implemented a workaround for reversed _PRT entries. A significant number 4100of 4101BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This 4102change dynamically detects and repairs this problem. Provides 4103compatibility 4104with MS ACPI. BZ 6859 4105 4106Simplified the internal ACPI hardware interfaces to eliminate the locking 4107flag parameter from Register Read/Write. Added a new external interface, 4108AcpiGetRegisterUnlocked. 4109 4110Fixed a problem where the invocation of a GPE control method could hang. 4111This 4112was a regression introduced in 20080514. The new method argument count 4113validation mechanism can enter an infinite loop when a GPE method is 4114dispatched. Problem fixed by removing the obsolete code that passed GPE 4115block 4116information to the notify handler via the control method parameter 4117pointer. 4118 4119Fixed a problem where the _SST execution status was incorrectly returned 4120to 4121the caller of AcpiEnterSleepStatePrep. This was a regression introduced in 412220080514. _SST is optional and a NOT_FOUND exception should never be 4123returned. BZ 716 4124 4125Fixed a problem where a deleted object could be accessed from within the 4126AML 4127parser. This was a regression introduced in version 20080123 as a fix for 4128the 4129Unload operator. Lin Ming. BZ 10669 4130 4131Cleaned up the debug operand dump mechanism. Eliminated unnecessary 4132operands 4133and eliminated the use of a negative index in a loop. Operands are now 4134displayed in the correct order, not backwards. This also fixes a 4135regression 4136introduced in 20080514 on 64-bit systems where the elimination of 4137ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ 4138715 4139 4140Fixed a possible memory leak in EvPciConfigRegionSetup where the error 4141exit 4142path did not delete a locally allocated structure. 4143 4144Updated definitions for the DMAR and SRAT tables to synchronize with the 4145current specifications. Includes disassembler support. 4146 4147Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect 4148loop termination value was used. Loop terminated on iteration early, 4149missing 4150one mutex. Linn Crosetto 4151 4152Example Code and Data Size: These are the sizes for the OS-independent 4153acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4154debug version of the code includes the debug output trace mechanism and 4155has a 4156much larger code and data size. 4157 4158 Previous Release: 4159 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 4160 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 4161 Current Release: 4162 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 4163 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 4164 41652) iASL Compiler/Disassembler and Tools: 4166 4167Disassembler: Implemented support for EisaId() within _CID objects. Now 4168disassemble integer _CID objects back to EisaId invocations, including 4169multiple integers within _CID packages. Includes single-step support for 4170debugger also. 4171 4172Disassembler: Added support for DMAR and SRAT table definition changes. 4173 4174---------------------------------------- 417514 May 2008. Summary of changes for version 20080514: 4176 41771) ACPI CA Core Subsystem: 4178 4179Fixed a problem where GPEs were enabled too early during the ACPICA 4180initialization. This could lead to "handler not installed" errors on some 4181machines. Moved GPE enable until after _REG/_STA/_INI methods are run. 4182This 4183ensures that all operation regions and devices throughout the namespace 4184have 4185been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916. 4186 4187Implemented a change to the enter sleep code. Moved execution of the _GTS 4188method to just before setting sleep enable bit. The execution was moved 4189from 4190AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed 4191immediately before the SLP_EN bit is set, as per the ACPI specification. 4192Luming Yu, BZ 1653. 4193 4194Implemented a fix to disable unknown GPEs (2nd version). Now always 4195disable 4196the GPE, even if ACPICA thinks that that it is already disabled. It is 4197possible that the AML or some other code has enabled the GPE unbeknownst 4198to 4199the ACPICA code. 4200 4201Fixed a problem with the Field operator where zero-length fields would 4202return 4203an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length 4204ASL 4205field declarations in Field(), BankField(), and IndexField(). BZ 10606. 4206 4207Implemented a fix for the Load operator, now load the table at the 4208namespace 4209root. This reverts a change introduced in version 20071019. The table is 4210now 4211loaded at the namespace root even though this goes against the ACPI 4212specification. This provides compatibility with other ACPI 4213implementations. 4214The ACPI specification will be updated to reflect this in ACPI 4.0. Lin 4215Ming. 4216 4217Fixed a problem where ACPICA would not Load() tables with unusual 4218signatures. 4219Now ignore ACPI table signature for Load() operator. Only "SSDT" is 4220acceptable to the ACPI spec, but tables are seen with OEMx and null sigs. 4221Therefore, signature validation is worthless. Apparently MS ACPI accepts 4222such 4223signatures, ACPICA must be compatible. BZ 10454. 4224 4225Fixed a possible negative array index in AcpiUtValidateException. Added 4226NULL 4227fields to the exception string arrays to eliminate a -1 subtraction on the 4228SubStatus field. 4229 4230Updated the debug tracking macros to reduce overall code and data size. 4231Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings 4232instead of pointers to static strings. Jan Beulich and Bob Moore. 4233 4234Implemented argument count checking in control method invocation via 4235AcpiEvaluateObject. Now emit an error if too few arguments, warning if too 4236many. This applies only to extern programmatic control method execution, 4237not 4238method-to-method calls within the AML. Lin Ming. 4239 4240Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is 4241no 4242longer needed, especially with the removal of 16-bit support. It was 4243replaced 4244mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64 bit 4245on 424632/64-bit platforms is required. 4247 4248Added the C const qualifier for appropriate string constants -- mostly 4249MODULE_NAME and printf format strings. Jan Beulich. 4250 4251Example Code and Data Size: These are the sizes for the OS-independent 4252acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4253debug version of the code includes the debug output trace mechanism and 4254has a 4255much larger code and data size. 4256 4257 Previous Release: 4258 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 4259 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 4260 Current Release: 4261 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 4262 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 4263 42642) iASL Compiler/Disassembler and Tools: 4265 4266Implemented ACPI table revision ID validation in the disassembler. Zero is 4267always invalid. For DSDTs, the ID controls the interpreter integer width. 42681 4269means 32-bit and this is unusual. 2 or greater is 64-bit. 4270 4271---------------------------------------- 427221 March 2008. Summary of changes for version 20080321: 4273 42741) ACPI CA Core Subsystem: 4275 4276Implemented an additional change to the GPE support in order to suppress 4277spurious or stray GPEs. The AcpiEvDisableGpe function will now permanently 4278disable incoming GPEs that are neither enabled nor disabled -- meaning 4279that 4280the GPE is unknown to the system. This should prevent future interrupt 4281floods 4282from that GPE. BZ 6217 (Zhang Rui) 4283 4284Fixed a problem where NULL package elements were not returned to the 4285AcpiEvaluateObject interface correctly. The element was simply ignored 4286instead of returning a NULL ACPI_OBJECT package element, potentially 4287causing 4288a buffer overflow and/or confusing the caller who expected a fixed number 4289of 4290elements. BZ 10132 (Lin Ming, Bob Moore) 4291 4292Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word, 4293Dword, 4294Qword), Field, BankField, and IndexField operators when invoked from 4295inside 4296an executing control method. In this case, these operators created 4297namespace 4298nodes that were incorrectly left marked as permanent nodes instead of 4299temporary nodes. This could cause a problem if there is race condition 4300between an exiting control method and a running namespace walk. (Reported 4301by 4302Linn Crosetto) 4303 4304Fixed a problem where the CreateField and CreateXXXField operators would 4305incorrectly allow duplicate names (the name of the field) with no 4306exception 4307generated. 4308 4309Implemented several changes for Notify handling. Added support for new 4310Notify 4311values (ACPI 2.0+) and improved the Notify debug output. Notify on 4312PowerResource objects is no longer allowed, as per the ACPI specification. 4313(Bob Moore, Zhang Rui) 4314 4315All Reference Objects returned via the AcpiEvaluateObject interface are 4316now 4317marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved 4318for 4319NULL objects - either NULL package elements or unresolved named 4320references. 4321 4322Fixed a problem where an extraneous debug message was produced for package 4323objects (when debugging enabled). The message "Package List length larger 4324than NumElements count" is now produced in the correct case, and is now an 4325error message rather than a debug message. Added a debug message for the 4326opposite case, where NumElements is larger than the Package List (the 4327package 4328will be padded out with NULL elements as per the ACPI spec.) 4329 4330Implemented several improvements for the output of the ASL "Debug" object 4331to 4332clarify and keep all data for a given object on one output line. 4333 4334Fixed two size calculation issues with the variable-length Start Dependent 4335resource descriptor. 4336 4337Example Code and Data Size: These are the sizes for the OS-independent 4338acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4339debug version of the code includes the debug output trace mechanism and 4340has 4341a much larger code and data size. 4342 4343 Previous Release: 4344 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 4345 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 4346 Current Release: 4347 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 4348 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 4349 43502) iASL Compiler/Disassembler and Tools: 4351 4352Fixed a problem with the use of the Switch operator where execution of the 4353containing method by multiple concurrent threads could cause an 4354AE_ALREADY_EXISTS exception. This is caused by the fact that there is no 4355actual Switch opcode, it must be simulated with local named temporary 4356variables and if/else pairs. The solution chosen was to mark any method 4357that 4358uses Switch as Serialized, thus preventing multiple thread entries. BZ 4359469. 4360 4361---------------------------------------- 436213 February 2008. Summary of changes for version 20080213: 4363 43641) ACPI CA Core Subsystem: 4365 4366Implemented another MS compatibility design change for GPE/Notify 4367handling. 4368GPEs are now cleared/enabled asynchronously to allow all pending notifies 4369to 4370complete first. It is expected that the OSL will queue the enable request 4371behind all pending notify requests (may require changes to the local host 4372OSL 4373in AcpiOsExecute). Alexey Starikovskiy. 4374 4375Fixed a problem where buffer and package objects passed as arguments to a 4376control method via the external AcpiEvaluateObject interface could cause 4377an 4378AE_AML_INTERNAL exception depending on the order and type of operators 4379executed by the target control method. 4380 4381Fixed a problem where resource descriptor size optimization could cause a 4382problem when a _CRS resource template is passed to a _SRS method. The _SRS 4383resource template must use the same descriptors (with the same size) as 4384returned from _CRS. This change affects the following resource 4385descriptors: 4386IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ 43879487) 4388 4389Fixed a problem where a CopyObject to RegionField, BankField, and 4390IndexField 4391objects did not perform an implicit conversion as it should. These types 4392must 4393retain their initial type permanently as per the ACPI specification. 4394However, 4395a CopyObject to all other object types should not perform an implicit 4396conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388 4397 4398Fixed a problem with the AcpiGetDevices interface where the mechanism to 4399match device CIDs did not examine the entire list of available CIDs, but 4400instead aborted on the first non-matching CID. Andrew Patterson. 4401 4402Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro 4403was 4404inadvertently changed to return a 16-bit value instead of a 32-bit value, 4405truncating the upper dword of a 64-bit value. This macro is only used to 4406display debug output, so no incorrect calculations were made. Also, 4407reimplemented the macro so that a 64-bit shift is not performed by 4408inefficient compilers. 4409 4410Added missing va_end statements that should correspond with each va_start 4411statement. 4412 4413Example Code and Data Size: These are the sizes for the OS-independent 4414acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4415debug version of the code includes the debug output trace mechanism and 4416has 4417a much larger code and data size. 4418 4419 Previous Release: 4420 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 4421 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 4422 Current Release: 4423 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 4424 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 4425 44262) iASL Compiler/Disassembler and Tools: 4427 4428Implemented full disassembler support for the following new ACPI tables: 4429BERT, EINJ, and ERST. Implemented partial disassembler support for the 4430complicated HEST table. These tables support the Windows Hardware Error 4431Architecture (WHEA). 4432 4433---------------------------------------- 443423 January 2008. Summary of changes for version 20080123: 4435 44361) ACPI CA Core Subsystem: 4437 4438Added the 2008 copyright to all module headers and signons. This affects 4439virtually every file in the ACPICA core subsystem, the iASL compiler, and 4440the tools/utilities. 4441 4442Fixed a problem with the SizeOf operator when used with Package and Buffer 4443objects. These objects have deferred execution for some arguments, and the 4444execution is now completed before the SizeOf is executed. This problem 4445caused 4446unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore) 4447BZ 44489558 4449 4450Implemented an enhancement to the interpreter "slack mode". In the absence 4451of 4452an explicit return or an implicitly returned object from the last executed 4453opcode, a control method will now implicitly return an integer of value 0 4454for 4455Microsoft compatibility. (Lin Ming) BZ 392 4456 4457Fixed a problem with the Load operator where an exception was not returned 4458in 4459the case where the table is already loaded. (Lin Ming) BZ 463 4460 4461Implemented support for the use of DDBHandles as an Indexed Reference, as 4462per 4463the ACPI spec. (Lin Ming) BZ 486 4464 4465Implemented support for UserTerm (Method invocation) for the Unload 4466operator 4467as per the ACPI spec. (Lin Ming) BZ 580 4468 4469Fixed a problem with the LoadTable operator where the OemId and OemTableId 4470input strings could cause unexpected failures if they were shorter than 4471the 4472maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576 4473 4474Implemented support for UserTerm (Method invocation) for the Unload 4475operator 4476as per the ACPI spec. (Lin Ming) BZ 580 4477 4478Implemented header file support for new ACPI tables - BERT, ERST, EINJ, 4479HEST, 4480IBFT, UEFI, WDAT. Disassembler support is forthcoming. 4481 4482Example Code and Data Size: These are the sizes for the OS-independent 4483acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4484debug version of the code includes the debug output trace mechanism and 4485has 4486a much larger code and data size. 4487 4488 Previous Release: 4489 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 4490 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 4491 Current Release: 4492 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 4493 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 4494 44952) iASL Compiler/Disassembler and Tools: 4496 4497Implemented support in the disassembler for checksum validation on 4498incoming 4499binary DSDTs and SSDTs. If incorrect, a message is displayed within the 4500table 4501header dump at the start of the disassembly. 4502 4503Implemented additional debugging information in the namespace listing file 4504created during compilation. In addition to the namespace hierarchy, the 4505full 4506pathname to each namespace object is displayed. 4507 4508Fixed a problem with the disassembler where invalid ACPI tables could 4509cause 4510faults or infinite loops. 4511 4512Fixed an unexpected parse error when using the optional "parameter types" 4513list in a control method declaration. (Lin Ming) BZ 397 4514 4515Fixed a problem where two External declarations with the same name did not 4516cause an error (Lin Ming) BZ 509 4517 4518Implemented support for full TermArgs (adding Argx, Localx and method 4519invocation) for the ParameterData parameter to the LoadTable operator. 4520(Lin 4521Ming) BZ 583,587 4522 4523---------------------------------------- 452419 December 2007. Summary of changes for version 20071219: 4525 45261) ACPI CA Core Subsystem: 4527 4528Implemented full support for deferred execution for the TermArg string 4529arguments for DataTableRegion. This enables forward references and full 4530operand resolution for the three string arguments. Similar to 4531OperationRegion 4532deferred argument execution.) Lin Ming. BZ 430 4533 4534Implemented full argument resolution support for the BankValue argument to 4535BankField. Previously, only constants were supported, now any TermArg may 4536be 4537used. Lin Ming BZ 387, 393 4538 4539Fixed a problem with AcpiGetDevices where the search of a branch of the 4540device tree could be terminated prematurely. In accordance with the ACPI 4541specification, the search down the current branch is terminated if a 4542device 4543is both not present and not functional (instead of just not present.) 4544Yakui 4545Zhao. 4546 4547Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly 4548if 4549the underlying AML code changed the GPE enable registers. Now, any unknown 4550incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately 4551disabled 4552instead of simply ignored. Rui Zhang. 4553 4554Fixed a problem with Index Fields where the Index register was incorrectly 4555limited to a maximum of 32 bits. Now any size may be used. 4556 4557Fixed a couple memory leaks associated with "implicit return" objects when 4558the AML Interpreter slack mode is enabled. Lin Ming BZ 349 4559 4560Example Code and Data Size: These are the sizes for the OS-independent 4561acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4562debug version of the code includes the debug output trace mechanism and 4563has 4564a much larger code and data size. 4565 4566 Previous Release: 4567 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 4568 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 4569 Current Release: 4570 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 4571 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 4572 4573---------------------------------------- 457414 November 2007. Summary of changes for version 20071114: 4575 45761) ACPI CA Core Subsystem: 4577 4578Implemented event counters for each of the Fixed Events, the ACPI SCI 4579(interrupt) itself, and control methods executed. Named 4580AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively. 4581These 4582should be useful for debugging and statistics. 4583 4584Implemented a new external interface, AcpiGetStatistics, to retrieve the 4585contents of the various event counters. Returns the current values for 4586AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and 4587AcpiMethodCount. The interface can be expanded in the future if new 4588counters 4589are added. Device drivers should use this interface rather than access the 4590counters directly. 4591 4592Fixed a problem with the FromBCD and ToBCD operators. With some compilers, 4593the ShortDivide function worked incorrectly, causing problems with the BCD 4594functions with large input values. A truncation from 64-bit to 32-bit 4595inadvertently occurred. Internal BZ 435. Lin Ming 4596 4597Fixed a problem with Index references passed as method arguments. 4598References 4599passed as arguments to control methods were dereferenced immediately 4600(before 4601control was passed to the called method). The references are now correctly 4602passed directly to the called method. BZ 5389. Lin Ming 4603 4604Fixed a problem with CopyObject used in conjunction with the Index 4605operator. 4606The reference was incorrectly dereferenced before the copy. The reference 4607is 4608now correctly copied. BZ 5391. Lin Ming 4609 4610Fixed a problem with Control Method references within Package objects. 4611These 4612references are now correctly generated. This completes the package 4613construction overhaul that began in version 20071019. 4614 4615Example Code and Data Size: These are the sizes for the OS-independent 4616acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4617debug version of the code includes the debug output trace mechanism and 4618has 4619a much larger code and data size. 4620 4621 Previous Release: 4622 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 4623 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 4624 Current Release: 4625 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 4626 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 4627 4628 46292) iASL Compiler/Disassembler and Tools: 4630 4631The AcpiExec utility now installs handlers for all of the predefined 4632Operation Region types. New types supported are: PCI_Config, CMOS, and 4633PCIBARTarget. 4634 4635Fixed a problem with the 64-bit version of AcpiExec where the extended 4636(64- 4637bit) address fields for the DSDT and FACS within the FADT were not being 4638used, causing truncation of the upper 32-bits of these addresses. Lin Ming 4639and Bob Moore 4640 4641---------------------------------------- 464219 October 2007. Summary of changes for version 20071019: 4643 46441) ACPI CA Core Subsystem: 4645 4646Fixed a problem with the Alias operator when the target of the alias is a 4647named ASL operator that opens a new scope -- Scope, Device, PowerResource, 4648Processor, and ThermalZone. In these cases, any children of the original 4649operator could not be accessed via the alias, potentially causing 4650unexpected 4651AE_NOT_FOUND exceptions. (BZ 9067) 4652 4653Fixed a problem with the Package operator where all named references were 4654created as object references and left otherwise unresolved. According to 4655the 4656ACPI specification, a Package can only contain Data Objects or references 4657to 4658control methods. The implication is that named references to Data Objects 4659(Integer, Buffer, String, Package, BufferField, Field) should be resolved 4660immediately upon package creation. This is the approach taken with this 4661change. References to all other named objects (Methods, Devices, Scopes, 4662etc.) are all now properly created as reference objects. (BZ 5328) 4663 4664Reverted a change to Notify handling that was introduced in version 466520070508. This version changed the Notify handling from asynchronous to 4666fully synchronous (Device driver Notify handling with respect to the 4667Notify 4668ASL operator). It was found that this change caused more problems than it 4669solved and was removed by most users. 4670 4671Fixed a problem with the Increment and Decrement operators where the type 4672of 4673the target object could be unexpectedly and incorrectly changed. (BZ 353) 4674Lin Ming. 4675 4676Fixed a problem with the Load and LoadTable operators where the table 4677location within the namespace was ignored. Instead, the table was always 4678loaded into the root or current scope. Lin Ming. 4679 4680Fixed a problem with the Load operator when loading a table from a buffer 4681object. The input buffer was prematurely zeroed and/or deleted. (BZ 577) 4682 4683Fixed a problem with the Debug object where a store of a DdbHandle 4684reference 4685object to the Debug object could cause a fault. 4686 4687Added a table checksum verification for the Load operator, in the case 4688where 4689the load is from a buffer. (BZ 578). 4690 4691Implemented additional parameter validation for the LoadTable operator. 4692The 4693length of the input strings SignatureString, OemIdString, and OemTableId 4694are 4695now checked for maximum lengths. (BZ 582) Lin Ming. 4696 4697Example Code and Data Size: These are the sizes for the OS-independent 4698acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4699debug version of the code includes the debug output trace mechanism and 4700has 4701a much larger code and data size. 4702 4703 Previous Release: 4704 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 4705 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 4706 Current Release: 4707 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 4708 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 4709 4710 47112) iASL Compiler/Disassembler: 4712 4713Fixed a problem where if a single file was specified and the file did not 4714exist, no error message was emitted. (Introduced with wildcard support in 4715version 20070917.) 4716 4717---------------------------------------- 471819 September 2007. Summary of changes for version 20070919: 4719 47201) ACPI CA Core Subsystem: 4721 4722Designed and implemented new external interfaces to install and remove 4723handlers for ACPI table-related events. Current events that are defined 4724are 4725LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as 4726they are dynamically loaded and unloaded. See AcpiInstallTableHandler and 4727AcpiRemoveTableHandler. (Lin Ming and Bob Moore) 4728 4729Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag 4730(acpi_serialized option on Linux) could cause some systems to hang during 4731initialization. (Bob Moore) BZ 8171 4732 4733Fixed a problem where objects of certain types (Device, ThermalZone, 4734Processor, PowerResource) can be not found if they are declared and 4735referenced from within the same control method (Lin Ming) BZ 341 4736 4737Example Code and Data Size: These are the sizes for the OS-independent 4738acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4739debug version of the code includes the debug output trace mechanism and 4740has 4741a much larger code and data size. 4742 4743 Previous Release: 4744 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 4745 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 4746 Current Release: 4747 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 4748 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 4749 4750 47512) iASL Compiler/Disassembler: 4752 4753Implemented support to allow multiple files to be compiled/disassembled in 4754a 4755single invocation. This includes command line wildcard support for both 4756the 4757Windows and Unix versions of the compiler. This feature simplifies the 4758disassembly and compilation of multiple ACPI tables in a single directory. 4759 4760---------------------------------------- 476108 May 2007. Summary of changes for version 20070508: 4762 47631) ACPI CA Core Subsystem: 4764 4765Implemented a Microsoft compatibility design change for the handling of 4766the 4767Notify AML operator. Previously, notify handlers were dispatched and 4768executed completely asynchronously in a deferred thread. The new design 4769still executes the notify handlers in a different thread, but the original 4770thread that executed the Notify() now waits at a synchronization point for 4771the notify handler to complete. Some machines depend on a synchronous 4772Notify 4773operator in order to operate correctly. 4774 4775Implemented support to allow Package objects to be passed as method 4776arguments to the external AcpiEvaluateObject interface. Previously, this 4777would return the AE_NOT_IMPLEMENTED exception. This feature had not been 4778implemented since there were no reserved control methods that required it 4779until recently. 4780 4781Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs 4782that 4783contained invalid non-zero values in reserved fields could cause later 4784failures because these fields have meaning in later revisions of the FADT. 4785For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The 4786fields 4787are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.) 4788 4789Fixed a problem where the Global Lock handle was not properly updated if a 4790thread that acquired the Global Lock via executing AML code then attempted 4791to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by 4792Joe 4793Liu. 4794 4795Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list 4796could be corrupted if the interrupt being removed was at the head of the 4797list. Reported by Linn Crosetto. 4798 4799Example Code and Data Size: These are the sizes for the OS-independent 4800acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4801debug version of the code includes the debug output trace mechanism and 4802has 4803a much larger code and data size. 4804 4805 Previous Release: 4806 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 4807 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 4808 Current Release: 4809 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 4810 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 4811 4812---------------------------------------- 481320 March 2007. Summary of changes for version 20070320: 4814 48151) ACPI CA Core Subsystem: 4816 4817Implemented a change to the order of interpretation and evaluation of AML 4818operand objects within the AML interpreter. The interpreter now evaluates 4819operands in the order that they appear in the AML stream (and the 4820corresponding ASL code), instead of in the reverse order (after the entire 4821operand list has been parsed). The previous behavior caused several subtle 4822incompatibilities with the Microsoft AML interpreter as well as being 4823somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov. 4824 4825Implemented a change to the ACPI Global Lock support. All interfaces to 4826the 4827global lock now allow the same thread to acquire the lock multiple times. 4828This affects the AcpiAcquireGlobalLock external interface to the global 4829lock 4830as well as the internal use of the global lock to support AML fields -- a 4831control method that is holding the global lock can now simultaneously 4832access 4833AML fields that require global lock protection. Previously, in both cases, 4834this would have resulted in an AE_ALREADY_ACQUIRED exception. The change 4835to 4836AcpiAcquireGlobalLock is of special interest to drivers for the Embedded 4837Controller. There is no change to the behavior of the AML Acquire 4838operator, 4839as this can already be used to acquire a mutex multiple times by the same 4840thread. BZ 8066. With assistance from Alexey Starikovskiy. 4841 4842Fixed a problem where invalid objects could be referenced in the AML 4843Interpreter after error conditions. During operand evaluation, ensure that 4844the internal "Return Object" field is cleared on error and only valid 4845pointers are stored there. Caused occasional access to deleted objects 4846that 4847resulted in "large reference count" warning messages. Valery Podrezov. 4848 4849Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur 4850on 4851deeply nested control method invocations. BZ 7873, local BZ 487. Valery 4852Podrezov. 4853 4854Fixed an internal problem with the handling of result objects on the 4855interpreter result stack. BZ 7872. Valery Podrezov. 4856 4857Removed obsolete code that handled the case where AML_NAME_OP is the 4858target 4859of a reference (Reference.Opcode). This code was no longer necessary. BZ 48607874. Valery Podrezov. 4861 4862Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This was 4863a 4864remnant from the previously discontinued 16-bit support. 4865 4866Example Code and Data Size: These are the sizes for the OS-independent 4867acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4868debug version of the code includes the debug output trace mechanism and 4869has 4870a much larger code and data size. 4871 4872 Previous Release: 4873 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 4874 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 4875 Current Release: 4876 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 4877 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 4878 4879---------------------------------------- 488026 January 2007. Summary of changes for version 20070126: 4881 48821) ACPI CA Core Subsystem: 4883 4884Added the 2007 copyright to all module headers and signons. This affects 4885virtually every file in the ACPICA core subsystem, the iASL compiler, and 4886the utilities. 4887 4888Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable 4889during a table load. A bad pointer was passed in the case where the DSDT 4890is 4891overridden, causing a fault in this case. 4892 4893Example Code and Data Size: These are the sizes for the OS-independent 4894acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4895debug version of the code includes the debug output trace mechanism and 4896has 4897a much larger code and data size. 4898 4899 Previous Release: 4900 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 4901 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 4902 Current Release: 4903 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 4904 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 4905 4906---------------------------------------- 490715 December 2006. Summary of changes for version 20061215: 4908 49091) ACPI CA Core Subsystem: 4910 4911Support for 16-bit ACPICA has been completely removed since it is no 4912longer 4913necessary and it clutters the code. All 16-bit macros, types, and 4914conditional compiles have been removed, cleaning up and simplifying the 4915code 4916across the entire subsystem. DOS support is no longer needed since the 4917bootable Linux firmware kit is now available. 4918 4919The handler for the Global Lock is now removed during AcpiTerminate to 4920enable a clean subsystem restart, via the implementation of the 4921AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz, 4922HP) 4923 4924Implemented enhancements to the multithreading support within the debugger 4925to enable improved multithreading debugging and evaluation of the 4926subsystem. 4927(Valery Podrezov) 4928 4929Debugger: Enhanced the Statistics/Memory command to emit the total 4930(maximum) 4931memory used during the execution, as well as the maximum memory consumed 4932by 4933each of the various object types. (Valery Podrezov) 4934 4935Example Code and Data Size: These are the sizes for the OS-independent 4936acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4937debug version of the code includes the debug output trace mechanism and 4938has 4939a much larger code and data size. 4940 4941 Previous Release: 4942 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 4943 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 4944 Current Release: 4945 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 4946 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 4947 4948 49492) iASL Compiler/Disassembler and Tools: 4950 4951AcpiExec: Implemented a new option (-m) to display full memory use 4952statistics upon subsystem/program termination. (Valery Podrezov) 4953 4954---------------------------------------- 495509 November 2006. Summary of changes for version 20061109: 4956 49571) ACPI CA Core Subsystem: 4958 4959Optimized the Load ASL operator in the case where the source operand is an 4960operation region. Simply map the operation region memory, instead of 4961performing a bytewise read. (Region must be of type SystemMemory, see 4962below.) 4963 4964Fixed the Load ASL operator for the case where the source operand is a 4965region field. A buffer object is also allowed as the source operand. BZ 4966480 4967 4968Fixed a problem where the Load ASL operator allowed the source operand to 4969be 4970an operation region of any type. It is now restricted to regions of type 4971SystemMemory, as per the ACPI specification. BZ 481 4972 4973Additional cleanup and optimizations for the new Table Manager code. 4974 4975AcpiEnable will now fail if all of the required ACPI tables are not loaded 4976(FADT, FACS, DSDT). BZ 477 4977 4978Added #pragma pack(8/4) to acobject.h to ensure that the structures in 4979this 4980header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been 4981manually optimized to be aligned and will not work if it is byte-packed. 4982 4983Example Code and Data Size: These are the sizes for the OS-independent 4984acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4985debug version of the code includes the debug output trace mechanism and 4986has 4987a much larger code and data size. 4988 4989 Previous Release: 4990 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 4991 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 4992 Current Release: 4993 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 4994 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 4995 4996 49972) iASL Compiler/Disassembler and Tools: 4998 4999Fixed a problem where the presence of the _OSI predefined control method 5000within complex expressions could cause an internal compiler error. 5001 5002AcpiExec: Implemented full region support for multiple address spaces. 5003SpaceId is now part of the REGION object. BZ 429 5004 5005---------------------------------------- 500611 October 2006. Summary of changes for version 20061011: 5007 50081) ACPI CA Core Subsystem: 5009 5010Completed an AML interpreter performance enhancement for control method 5011execution. Previously a 2-pass parse/execution, control methods are now 5012completely parsed and executed in a single pass. This improves overall 5013interpreter performance by ~25%, reduces code size, and reduces CPU stack 5014use. (Valery Podrezov + interpreter changes in version 20051202 that 5015eliminated namespace loading during the pass one parse.) 5016 5017Implemented _CID support for PCI Root Bridge detection. If the _HID does 5018not 5019match the predefined PCI Root Bridge IDs, the _CID list (if present) is 5020now 5021obtained and also checked for an ID match. 5022 5023Implemented additional support for the PCI _ADR execution: upsearch until 5024a 5025device scope is found before executing _ADR. This allows PCI_Config 5026operation regions to be declared locally within control methods underneath 5027PCI device objects. 5028 5029Fixed a problem with a possible race condition between threads executing 5030AcpiWalkNamespace and the AML interpreter. This condition was removed by 5031modifying AcpiWalkNamespace to (by default) ignore all temporary namespace 5032entries created during any concurrent control method execution. An 5033additional namespace race condition is known to exist between 5034AcpiWalkNamespace and the Load/Unload ASL operators and is still under 5035investigation. 5036 5037Restructured the AML ParseLoop function, breaking it into several 5038subfunctions in order to reduce CPU stack use and improve maintainability. 5039(Mikhail Kouzmich) 5040 5041AcpiGetHandle: Fix for parameter validation to detect invalid combinations 5042of prefix handle and pathname. BZ 478 5043 5044Example Code and Data Size: These are the sizes for the OS-independent 5045acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5046debug version of the code includes the debug output trace mechanism and 5047has 5048a much larger code and data size. 5049 5050 Previous Release: 5051 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 5052 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 5053 Current Release: 5054 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 5055 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 5056 50572) iASL Compiler/Disassembler and Tools: 5058 5059Ported the -g option (get local ACPI tables) to the new ACPICA Table 5060Manager 5061to restore original behavior. 5062 5063---------------------------------------- 506427 September 2006. Summary of changes for version 20060927: 5065 50661) ACPI CA Core Subsystem: 5067 5068Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister. 5069These functions now use a spinlock for mutual exclusion and the interrupt 5070level indication flag is not needed. 5071 5072Fixed a problem with the Global Lock where the lock could appear to be 5073obtained before it is actually obtained. The global lock semaphore was 5074inadvertently created with one unit instead of zero units. (BZ 464) Fiodor 5075Suietov. 5076 5077Fixed a possible memory leak and fault in AcpiExResolveObjectToValue 5078during 5079a read from a buffer or region field. (BZ 458) Fiodor Suietov. 5080 5081Example Code and Data Size: These are the sizes for the OS-independent 5082acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5083debug version of the code includes the debug output trace mechanism and 5084has 5085a much larger code and data size. 5086 5087 Previous Release: 5088 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 5089 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 5090 Current Release: 5091 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 5092 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 5093 5094 50952) iASL Compiler/Disassembler and Tools: 5096 5097Fixed a compilation problem with the pre-defined Resource Descriptor field 5098names where an "object does not exist" error could be incorrectly 5099generated 5100if the parent ResourceTemplate pathname places the template within a 5101different namespace scope than the current scope. (BZ 7212) 5102 5103Fixed a problem where the compiler could hang after syntax errors detected 5104in an ElseIf construct. (BZ 453) 5105 5106Fixed a problem with the AmlFilename parameter to the DefinitionBlock() 5107operator. An incorrect output filename was produced when this parameter 5108was 5109a null string (""). Now, the original input filename is used as the AML 5110output filename, with an ".aml" extension. 5111 5112Implemented a generic batch command mode for the AcpiExec utility (execute 5113any AML debugger command) (Valery Podrezov). 5114 5115---------------------------------------- 511612 September 2006. Summary of changes for version 20060912: 5117 51181) ACPI CA Core Subsystem: 5119 5120Enhanced the implementation of the "serialized mode" of the interpreter 5121(enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is 5122specified, instead of creating a serialization semaphore per control 5123method, 5124the interpreter lock is simply no longer released before a blocking 5125operation during control method execution. This effectively makes the AML 5126Interpreter single-threaded. The overhead of a semaphore per-method is 5127eliminated. 5128 5129Fixed a regression where an error was no longer emitted if a control 5130method 5131attempts to create 2 objects of the same name. This once again returns 5132AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism 5133that 5134will dynamically serialize the control method to possible prevent future 5135errors. (BZ 440) 5136 5137Integrated a fix for a problem with PCI Express HID detection in the PCI 5138Config Space setup procedure. (BZ 7145) 5139 5140Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the 5141AcpiHwInitialize function - the FADT registers are now validated when the 5142table is loaded. 5143 5144Added two new warnings during FADT verification - 1) if the FADT is larger 5145than the largest known FADT version, and 2) if there is a mismatch between 5146a 514732-bit block address and the 64-bit X counterpart (when both are non- 5148zero.) 5149 5150Example Code and Data Size: These are the sizes for the OS-independent 5151acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5152debug version of the code includes the debug output trace mechanism and 5153has 5154a much larger code and data size. 5155 5156 Previous Release: 5157 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 5158 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 5159 Current Release: 5160 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 5161 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 5162 5163 51642) iASL Compiler/Disassembler and Tools: 5165 5166Fixed a problem with the implementation of the Switch() operator where the 5167temporary variable was declared too close to the actual Switch, instead of 5168at method level. This could cause a problem if the Switch() operator is 5169within a while loop, causing an error on the second iteration. (BZ 460) 5170 5171Disassembler - fix for error emitted for unknown type for target of scope 5172operator. Now, ignore it and continue. 5173 5174Disassembly of an FADT now verifies the input FADT and reports any errors 5175found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs. 5176 5177Disassembly of raw data buffers with byte initialization data now prefixes 5178each output line with the current buffer offset. 5179 5180Disassembly of ASF! table now includes all variable-length data fields at 5181the end of some of the subtables. 5182 5183The disassembler now emits a comment if a buffer appears to be a 5184ResourceTemplate, but cannot be disassembled as such because the EndTag 5185does 5186not appear at the very end of the buffer. 5187 5188AcpiExec - Added the "-t" command line option to enable the serialized 5189mode 5190of the AML interpreter. 5191 5192---------------------------------------- 519331 August 2006. Summary of changes for version 20060831: 5194 51951) ACPI CA Core Subsystem: 5196 5197Miscellaneous fixes for the Table Manager: 5198- Correctly initialize internal common FADT for all 64-bit "X" fields 5199- Fixed a couple table mapping issues during table load 5200- Fixed a couple alignment issues for IA64 5201- Initialize input array to zero in AcpiInitializeTables 5202- Additional parameter validation for AcpiGetTable, AcpiGetTableHeader, 5203AcpiGetTableByIndex 5204 5205Change for GPE support: when a "wake" GPE is received, all wake GPEs are 5206now 5207immediately disabled to prevent the waking GPE from firing again and to 5208prevent other wake GPEs from interrupting the wake process. 5209 5210Added the AcpiGpeCount global that tracks the number of processed GPEs, to 5211be used for debugging systems with a large number of ACPI interrupts. 5212 5213Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in 5214both the ACPICA headers and the disassembler. 5215 5216Example Code and Data Size: These are the sizes for the OS-independent 5217acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5218debug version of the code includes the debug output trace mechanism and 5219has 5220a much larger code and data size. 5221 5222 Previous Release: 5223 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 5224 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 5225 Current Release: 5226 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 5227 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 5228 5229 52302) iASL Compiler/Disassembler and Tools: 5231 5232Disassembler support for the DMAR ACPI table. 5233 5234---------------------------------------- 523523 August 2006. Summary of changes for version 20060823: 5236 52371) ACPI CA Core Subsystem: 5238 5239The Table Manager component has been completely redesigned and 5240reimplemented. The new design is much simpler, and reduces the overall 5241code 5242and data size of the kernel-resident ACPICA by approximately 5%. Also, it 5243is 5244now possible to obtain the ACPI tables very early during kernel 5245initialization, even before dynamic memory management is initialized. 5246(Alexey Starikovskiy, Fiodor Suietov, Bob Moore) 5247 5248Obsolete ACPICA interfaces: 5249 5250- AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel 5251init 5252time). 5253- AcpiLoadTable: Not needed. 5254- AcpiUnloadTable: Not needed. 5255 5256New ACPICA interfaces: 5257 5258- AcpiInitializeTables: Must be called before the table manager can be 5259used. 5260- AcpiReallocateRootTable: Used to transfer the root table to dynamically 5261allocated memory after it becomes available. 5262- AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI tables 5263in the RSDT/XSDT. 5264 5265Other ACPICA changes: 5266 5267- AcpiGetTableHeader returns the actual mapped table header, not a copy. 5268Use 5269AcpiOsUnmapMemory to free this mapping. 5270- AcpiGetTable returns the actual mapped table. The mapping is managed 5271internally and must not be deleted by the caller. Use of this interface 5272causes no additional dynamic memory allocation. 5273- AcpiFindRootPointer: Support for physical addressing has been 5274eliminated, 5275it appeared to be unused. 5276- The interface to AcpiOsMapMemory has changed to be consistent with the 5277other allocation interfaces. 5278- The interface to AcpiOsGetRootPointer has changed to eliminate 5279unnecessary 5280parameters. 5281- ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on 64- 5282bit platforms. Was previously 64 bits on all platforms. 5283- The interface to the ACPI Global Lock acquire/release macros have 5284changed 5285slightly since ACPICA no longer keeps a local copy of the FACS with a 5286constructed pointer to the actual global lock. 5287 5288Porting to the new table manager: 5289 5290- AcpiInitializeTables: Must be called once, and can be called anytime 5291during the OS initialization process. It allows the host to specify an 5292area 5293of memory to be used to store the internal version of the RSDT/XSDT (root 5294table). This allows the host to access ACPI tables before memory 5295management 5296is initialized and running. 5297- AcpiReallocateRootTable: Can be called after memory management is 5298running 5299to copy the root table to a dynamically allocated array, freeing up the 5300scratch memory specified in the call to AcpiInitializeTables. 5301- AcpiSubsystemInitialize: This existing interface is independent of the 5302Table Manager, and does not have to be called before the Table Manager can 5303be used, it only must be called before the rest of ACPICA can be used. 5304- ACPI Tables: Some changes have been made to the names and structure of 5305the 5306actbl.h and actbl1.h header files and may require changes to existing 5307code. 5308For example, bitfields have been completely removed because of their lack 5309of 5310portability across C compilers. 5311- Update interfaces to the Global Lock acquire/release macros if local 5312versions are used. (see acwin.h) 5313 5314Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c 5315 5316New files: tbfind.c 5317 5318Example Code and Data Size: These are the sizes for the OS-independent 5319acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5320debug version of the code includes the debug output trace mechanism and 5321has 5322a much larger code and data size. 5323 5324 Previous Release: 5325 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 5326 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 5327 Current Release: 5328 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 5329 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 5330 5331 53322) iASL Compiler/Disassembler and Tools: 5333 5334No changes for this release. 5335 5336---------------------------------------- 533721 July 2006. Summary of changes for version 20060721: 5338 53391) ACPI CA Core Subsystem: 5340 5341The full source code for the ASL test suite used to validate the iASL 5342compiler and the ACPICA core subsystem is being released with the ACPICA 5343source for the first time. The source is contained in a separate package 5344and 5345consists of over 1100 files that exercise all ASL/AML operators. The 5346package 5347should appear on the Intel/ACPI web site shortly. (Valery Podrezov, Fiodor 5348Suietov) 5349 5350Completed a new design and implementation for support of the ACPI Global 5351Lock. On the OS side, the global lock is now treated as a standard AML 5352mutex. Previously, multiple OS threads could "acquire" the global lock 5353simultaneously. However, this could cause the BIOS to be starved out of 5354the 5355lock - especially in cases such as the Embedded Controller driver where 5356there is a tight coupling between the OS and the BIOS. 5357 5358Implemented an optimization for the ACPI Global Lock interrupt mechanism. 5359The Global Lock interrupt handler no longer queues the execution of a 5360separate thread to signal the global lock semaphore. Instead, the 5361semaphore 5362is signaled directly from the interrupt handler. 5363 5364Implemented support within the AML interpreter for package objects that 5365contain a larger AML length (package list length) than the package element 5366count. In this case, the length of the package is truncated to match the 5367package element count. Some BIOS code apparently modifies the package 5368length 5369on the fly, and this change supports this behavior. Provides compatibility 5370with the MS AML interpreter. (With assistance from Fiodor Suietov) 5371 5372Implemented a temporary fix for the BankValue parameter of a Bank Field to 5373support all constant values, now including the Zero and One opcodes. 5374Evaluation of this parameter must eventually be converted to a full 5375TermArg 5376evaluation. A not-implemented error is now returned (temporarily) for non- 5377constant values for this parameter. 5378 5379Fixed problem reports (Fiodor Suietov) integrated: 5380- Fix for premature object deletion after CopyObject on Operation Region 5381(BZ 5382350) 5383 5384Example Code and Data Size: These are the sizes for the OS-independent 5385acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5386debug version of the code includes the debug output trace mechanism and 5387has 5388a much larger code and data size. 5389 5390 Previous Release: 5391 Non-Debug Version: 80.7K Code, 18.0K Data, 98.7K Total 5392 Debug Version: 160.9K Code, 65.1K Data, 226.0K Total 5393 Current Release: 5394 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 5395 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 5396 5397 53982) iASL Compiler/Disassembler and Tools: 5399 5400No changes for this release. 5401 5402---------------------------------------- 540307 July 2006. Summary of changes for version 20060707: 5404 54051) ACPI CA Core Subsystem: 5406 5407Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers 5408that do not allow the initialization of address pointers within packed 5409structures - even though the hardware itself may support misaligned 5410transfers. Some of the debug data structures are packed by default to 5411minimize size. 5412 5413Added an error message for the case where AcpiOsGetThreadId() returns 5414zero. 5415A non-zero value is required by the core ACPICA code to ensure the proper 5416operation of AML mutexes and recursive control methods. 5417 5418The DSDT is now the only ACPI table that determines whether the AML 5419interpreter is in 32-bit or 64-bit mode. Not really a functional change, 5420but 5421the hooks for per-table 32/64 switching have been removed from the code. A 5422clarification to the ACPI specification is forthcoming in ACPI 3.0B. 5423 5424Fixed a possible leak of an OwnerID in the error path of 5425AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID 5426deletion to a single place in AcpiTbUninstallTable to correct possible 5427leaks 5428when using the AcpiTbDeleteTablesByType interface (with assistance from 5429Lance Ortiz.) 5430 5431Fixed a problem with Serialized control methods where the semaphore 5432associated with the method could be over-signaled after multiple method 5433invocations. 5434 5435Fixed two issues with the locking of the internal namespace data 5436structure. 5437Both the Unload() operator and AcpiUnloadTable interface now lock the 5438namespace during the namespace deletion associated with the table unload 5439(with assistance from Linn Crosetto.) 5440 5441Fixed problem reports (Valery Podrezov) integrated: 5442- Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426) 5443 5444Fixed problem reports (Fiodor Suietov) integrated: 5445- Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369) 5446- On Address Space handler deletion, needless deactivation call (BZ 374) 5447- AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ 375) 5448- Possible memory leak, Notify sub-objects of Processor, Power, 5449ThermalZone 5450(BZ 376) 5451- AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378) 5452- Minimum Length of RSDT should be validated (BZ 379) 5453- AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no 5454Handler (BZ (380) 5455- AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type 5456loaded 5457(BZ 381) 5458 5459Example Code and Data Size: These are the sizes for the OS-independent 5460acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5461debug version of the code includes the debug output trace mechanism and 5462has 5463a much larger code and data size. 5464 5465 Previous Release: 5466 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 5467 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 5468 Current Release: 5469 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 5470 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 5471 5472 54732) iASL Compiler/Disassembler and Tools: 5474 5475Fixed problem reports: 5476Compiler segfault when ASL contains a long (>1024) String declaration (BZ 5477436) 5478 5479---------------------------------------- 548023 June 2006. Summary of changes for version 20060623: 5481 54821) ACPI CA Core Subsystem: 5483 5484Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This 5485allows the type to be customized to the host OS for improved efficiency 5486(since a spinlock is usually a very small object.) 5487 5488Implemented support for "ignored" bits in the ACPI registers. According to 5489the ACPI specification, these bits should be preserved when writing the 5490registers via a read/modify/write cycle. There are 3 bits preserved in 5491this 5492manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11]. 5493 5494Implemented the initial deployment of new OSL mutex interfaces. Since some 5495host operating systems have separate mutex and semaphore objects, this 5496feature was requested. The base code now uses mutexes (and the new mutex 5497interfaces) wherever a binary semaphore was used previously. However, for 5498the current release, the mutex interfaces are defined as macros to map 5499them 5500to the existing semaphore interfaces. Therefore, no OSL changes are 5501required 5502at this time. (See acpiosxf.h) 5503 5504Fixed several problems with the support for the control method SyncLevel 5505parameter. The SyncLevel now works according to the ACPI specification and 5506in concert with the Mutex SyncLevel parameter, since the current SyncLevel 5507is a property of the executing thread. Mutual exclusion for control 5508methods 5509is now implemented with a mutex instead of a semaphore. 5510 5511Fixed three instances of the use of the C shift operator in the bitfield 5512support code (exfldio.c) to avoid the use of a shift value larger than the 5513target data width. The behavior of C compilers is undefined in this case 5514and 5515can cause unpredictable results, and therefore the case must be detected 5516and 5517avoided. (Fiodor Suietov) 5518 5519Added an info message whenever an SSDT or OEM table is loaded dynamically 5520via the Load() or LoadTable() ASL operators. This should improve debugging 5521capability since it will show exactly what tables have been loaded (beyond 5522the tables present in the RSDT/XSDT.) 5523 5524Example Code and Data Size: These are the sizes for the OS-independent 5525acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5526debug version of the code includes the debug output trace mechanism and 5527has 5528a much larger code and data size. 5529 5530 Previous Release: 5531 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 5532 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 5533 Current Release: 5534 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 5535 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 5536 5537 55382) iASL Compiler/Disassembler and Tools: 5539 5540No changes for this release. 5541 5542---------------------------------------- 554308 June 2006. Summary of changes for version 20060608: 5544 55451) ACPI CA Core Subsystem: 5546 5547Converted the locking mutex used for the ACPI hardware to a spinlock. This 5548change should eliminate all problems caused by attempting to acquire a 5549semaphore at interrupt level, and it means that all ACPICA external 5550interfaces that directly access the ACPI hardware can be safely called 5551from 5552interrupt level. OSL code that implements the semaphore interfaces should 5553be 5554able to eliminate any workarounds for being called at interrupt level. 5555 5556Fixed a regression introduced in 20060526 where the ACPI device 5557initialization could be prematurely aborted with an AE_NOT_FOUND if a 5558device 5559did not have an optional _INI method. 5560 5561Fixed an IndexField issue where a write to the Data Register should be 5562limited in size to the AccessSize (width) of the IndexField itself. (BZ 5563433, 5564Fiodor Suietov) 5565 5566Fixed problem reports (Valery Podrezov) integrated: 5567- Allow store of ThermalZone objects to Debug object (BZ 5369/5370) 5568 5569Fixed problem reports (Fiodor Suietov) integrated: 5570- AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364) 5571 5572Removed four global mutexes that were obsolete and were no longer being 5573used. 5574 5575Example Code and Data Size: These are the sizes for the OS-independent 5576acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5577debug version of the code includes the debug output trace mechanism and 5578has 5579a much larger code and data size. 5580 5581 Previous Release: 5582 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 5583 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 5584 Current Release: 5585 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 5586 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 5587 5588 55892) iASL Compiler/Disassembler and Tools: 5590 5591Fixed a fault when using -g option (get tables from registry) on Windows 5592machines. 5593 5594Fixed problem reports integrated: 5595- Generate error if CreateField NumBits parameter is zero. (BZ 405) 5596- Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor 5597Suietov) 5598- Global table revision override (-r) is ignored (BZ 413) 5599 5600---------------------------------------- 560126 May 2006. Summary of changes for version 20060526: 5602 56031) ACPI CA Core Subsystem: 5604 5605Restructured, flattened, and simplified the internal interfaces for 5606namespace object evaluation - resulting in smaller code, less CPU stack 5607use, 5608and fewer interfaces. (With assistance from Mikhail Kouzmich) 5609 5610Fixed a problem with the CopyObject operator where the first parameter was 5611not typed correctly for the parser, interpreter, compiler, and 5612disassembler. 5613Caused various errors and unexpected behavior. 5614 5615Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits 5616produced incorrect results with some C compilers. Since the behavior of C 5617compilers when the shift value is larger than the datatype width is 5618apparently not well defined, the interpreter now detects this condition 5619and 5620simply returns zero as expected in all such cases. (BZ 395) 5621 5622Fixed problem reports (Valery Podrezov) integrated: 5623- Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329) 5624- Allow interpreter to handle nested method declarations (BZ 5361) 5625 5626Fixed problem reports (Fiodor Suietov) integrated: 5627- AcpiTerminate doesn't free debug memory allocation list objects (BZ 355) 5628- After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ 5629356) 5630- AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357) 5631- Resource Manager should return AE_TYPE for non-device objects (BZ 358) 5632- Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359) 5633- Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360) 5634- Incomplete cleanup branch in AcpiPsParseAml (BZ 361) 5635- Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362) 5636- AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ 5637365) 5638- Status of the Global Initialization Handler call not used (BZ 366) 5639- Incorrect object parameter to Global Initialization Handler (BZ 367) 5640 5641Example Code and Data Size: These are the sizes for the OS-independent 5642acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5643debug version of the code includes the debug output trace mechanism and 5644has 5645a much larger code and data size. 5646 5647 Previous Release: 5648 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 5649 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 5650 Current Release: 5651 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 5652 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 5653 5654 56552) iASL Compiler/Disassembler and Tools: 5656 5657Modified the parser to allow the names IO, DMA, and IRQ to be used as 5658namespace identifiers with no collision with existing resource descriptor 5659macro names. This provides compatibility with other ASL compilers and is 5660most useful for disassembly/recompilation of existing tables without parse 5661errors. (With assistance from Thomas Renninger) 5662 5663Disassembler: fixed an incorrect disassembly problem with the 5664DataTableRegion and CopyObject operators. Fixed a possible fault during 5665disassembly of some Alias operators. 5666 5667---------------------------------------- 566812 May 2006. Summary of changes for version 20060512: 5669 56701) ACPI CA Core Subsystem: 5671 5672Replaced the AcpiOsQueueForExecution interface with a new interface named 5673AcpiOsExecute. The major difference is that the new interface does not 5674have 5675a Priority parameter, this appeared to be useless and has been replaced by 5676a 5677Type parameter. The Type tells the host what type of execution is being 5678requested, such as global lock handler, notify handler, GPE handler, etc. 5679This allows the host to queue and execute the request as appropriate for 5680the 5681request type, possibly using different work queues and different 5682priorities 5683for the various request types. This enables fixes for multithreading 5684deadlock problems such as BZ #5534, and will require changes to all 5685existing 5686OS interface layers. (Alexey Starikovskiy and Bob Moore) 5687 5688Fixed a possible memory leak associated with the support for the so-called 5689"implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor 5690Suietov) 5691 5692Fixed a problem with the Load() operator where a table load from an 5693operation region could overwrite an internal table buffer by up to 7 bytes 5694and cause alignment faults on IPF systems. (With assistance from Luming 5695Yu) 5696 5697Example Code and Data Size: These are the sizes for the OS-independent 5698acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5699debug version of the code includes the debug output trace mechanism and 5700has 5701a much larger code and data size. 5702 5703 Previous Release: 5704 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 5705 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 5706 Current Release: 5707 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 5708 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 5709 5710 5711 57122) iASL Compiler/Disassembler and Tools: 5713 5714Disassembler: Implemented support to cross reference the internal 5715namespace 5716and automatically generate ASL External() statements for symbols not 5717defined 5718within the current table being disassembled. This will simplify the 5719disassembly and recompilation of interdependent tables such as SSDTs since 5720these statements will no longer have to be added manually. 5721 5722Disassembler: Implemented experimental support to automatically detect 5723invocations of external control methods and generate appropriate 5724External() 5725statements. This is problematic because the AML cannot be correctly parsed 5726until the number of arguments for each control method is known. Currently, 5727standalone method invocations and invocations as the source operand of a 5728Store() statement are supported. 5729 5730Disassembler: Implemented support for the ASL pseudo-operators LNotEqual, 5731LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()), 5732LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code 5733more readable and likely closer to the original ASL source. 5734 5735---------------------------------------- 573621 April 2006. Summary of changes for version 20060421: 5737 57381) ACPI CA Core Subsystem: 5739 5740Removed a device initialization optimization introduced in 20051216 where 5741the _STA method was not run unless an _INI was also present for the same 5742device. This optimization could cause problems because it could allow _INI 5743methods to be run within a not-present device subtree. (If a not-present 5744device had no _INI, _STA would not be run, the not-present status would 5745not 5746be discovered, and the children of the device would be incorrectly 5747traversed.) 5748 5749Implemented a new _STA optimization where namespace subtrees that do not 5750contain _INI are identified and ignored during device initialization. 5751Selectively running _STA can significantly improve boot time on large 5752machines (with assistance from Len Brown.) 5753 5754Implemented support for the device initialization case where the returned 5755_STA flags indicate a device not-present but functioning. In this case, 5756_INI 5757is not run, but the device children are examined for presence, as per the 5758ACPI specification. 5759 5760Implemented an additional change to the IndexField support in order to 5761conform to MS behavior. The value written to the Index Register is not 5762simply a byte offset, it is a byte offset in units of the access width of 5763the parent Index Field. (Fiodor Suietov) 5764 5765Defined and deployed a new OSL interface, AcpiOsValidateAddress. This 5766interface is called during the creation of all AML operation regions, and 5767allows the host OS to exert control over what addresses it will allow the 5768AML code to access. Operation Regions whose addresses are disallowed will 5769cause a runtime exception when they are actually accessed (will not affect 5770or abort table loading.) See oswinxf or osunixxf for an example 5771implementation. 5772 5773Defined and deployed a new OSL interface, AcpiOsValidateInterface. This 5774interface allows the host OS to match the various "optional" 5775interface/behavior strings for the _OSI predefined control method as 5776appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf 5777for an example implementation. 5778 5779Restructured and corrected various problems in the exception handling code 5780paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod 5781(with assistance from Takayoshi Kochi.) 5782 5783Modified the Linux source converter to ignore quoted string literals while 5784converting identifiers from mixed to lower case. This will correct 5785problems 5786with the disassembler and other areas where such strings must not be 5787modified. 5788 5789The ACPI_FUNCTION_* macros no longer require quotes around the function 5790name. This allows the Linux source converter to convert the names, now 5791that 5792the converter ignores quoted strings. 5793 5794Example Code and Data Size: These are the sizes for the OS-independent 5795acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5796debug version of the code includes the debug output trace mechanism and 5797has 5798a much larger code and data size. 5799 5800 Previous Release: 5801 5802 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 5803 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 5804 Current Release: 5805 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 5806 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 5807 5808 58092) iASL Compiler/Disassembler and Tools: 5810 5811Implemented 3 new warnings for iASL, and implemented multiple warning 5812levels 5813(w2 flag). 5814 58151) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is 5816not 5817WAIT_FOREVER (0xFFFF) and the code does not examine the return value to 5818check for the possible timeout, a warning is issued. 5819 58202) Useless operators: If an ASL operator does not specify an optional 5821target 5822operand and it also does not use the function return value from the 5823operator, a warning is issued since the operator effectively does nothing. 5824 58253) Unreferenced objects: If a namespace object is created, but never 5826referenced, a warning is issued. This is a warning level 2 since there are 5827cases where this is ok, such as when a secondary table is loaded that uses 5828the unreferenced objects. Even so, care is taken to only flag objects that 5829don't look like they will ever be used. For example, the reserved methods 5830(starting with an underscore) are usually not referenced because it is 5831expected that the OS will invoke them. 5832 5833---------------------------------------- 583431 March 2006. Summary of changes for version 20060331: 5835 58361) ACPI CA Core Subsystem: 5837 5838Implemented header file support for the following additional ACPI tables: 5839ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this 5840support, 5841all current and known ACPI tables are now defined in the ACPICA headers 5842and 5843are available for use by device drivers and other software. 5844 5845Implemented support to allow tables that contain ACPI names with invalid 5846characters to be loaded. Previously, this would cause the table load to 5847fail, but since there are several known cases of such tables on existing 5848machines, this change was made to enable ACPI support for them. Also, this 5849matches the behavior of the Microsoft ACPI implementation. 5850 5851Fixed a couple regressions introduced during the memory optimization in 5852the 585320060317 release. The namespace node definition required additional 5854reorganization and an internal datatype that had been changed to 8-bit was 5855restored to 32-bit. (Valery Podrezov) 5856 5857Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState 5858could be passed through to AcpiOsReleaseObject which is unexpected. Such 5859null pointers are now trapped and ignored, matching the behavior of the 5860previous implementation before the deployment of AcpiOsReleaseObject. 5861(Valery Podrezov, Fiodor Suietov) 5862 5863Fixed a memory mapping leak during the deletion of a SystemMemory 5864operation 5865region where a cached memory mapping was not deleted. This became a 5866noticeable problem for operation regions that are defined within 5867frequently 5868used control methods. (Dana Meyers) 5869 5870Reorganized the ACPI table header files into two main files: one for the 5871ACPI tables consumed by the ACPICA core, and another for the miscellaneous 5872ACPI tables that are consumed by the drivers and other software. The 5873various 5874FADT definitions were merged into one common section and three different 5875tables (ACPI 1.0, 1.0+, and 2.0) 5876 5877Example Code and Data Size: These are the sizes for the OS-independent 5878acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5879debug version of the code includes the debug output trace mechanism and 5880has 5881a much larger code and data size. 5882 5883 Previous Release: 5884 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 5885 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 5886 Current Release: 5887 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 5888 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 5889 5890 58912) iASL Compiler/Disassembler and Tools: 5892 5893Disassembler: Implemented support to decode and format all non-AML ACPI 5894tables (tables other than DSDTs and SSDTs.) This includes the new tables 5895added to the ACPICA headers, therefore all current and known ACPI tables 5896are 5897supported. 5898 5899Disassembler: The change to allow ACPI names with invalid characters also 5900enables the disassembly of such tables. Invalid characters within names 5901are 5902changed to '*' to make the name printable; the iASL compiler will still 5903generate an error for such names, however, since this is an invalid ACPI 5904character. 5905 5906Implemented an option for AcpiXtract (-a) to extract all tables found in 5907the 5908input file. The default invocation extracts only the DSDTs and SSDTs. 5909 5910Fixed a couple of gcc generation issues for iASL and AcpiExec and added a 5911makefile for the AcpiXtract utility. 5912 5913---------------------------------------- 591417 March 2006. Summary of changes for version 20060317: 5915 59161) ACPI CA Core Subsystem: 5917 5918Implemented the use of a cache object for all internal namespace nodes. 5919Since there are about 1000 static nodes in a typical system, this will 5920decrease memory use for cache implementations that minimize per-allocation 5921overhead (such as a slab allocator.) 5922 5923Removed the reference count mechanism for internal namespace nodes, since 5924it 5925was deemed unnecessary. This reduces the size of each namespace node by 5926about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit case, 5927and 32 bytes for the 64-bit case. 5928 5929Optimized several internal data structures to reduce object size on 64-bit 5930platforms by packing data within the 64-bit alignment. This includes the 5931frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static 5932instances corresponding to the namespace objects. 5933 5934Added two new strings for the predefined _OSI method: "Windows 2001.1 SP1" 5935and "Windows 2006". 5936 5937Split the allocation tracking mechanism out to a separate file, from 5938utalloc.c to uttrack.c. This mechanism appears to be only useful for 5939application-level code. Kernels may wish to not include uttrack.c in 5940distributions. 5941 5942Removed all remnants of the obsolete ACPI_REPORT_* macros and the 5943associated 5944code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING 5945macros.) 5946 5947Code and Data Size: These are the sizes for the acpica.lib produced by the 5948Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any 5949ACPI 5950driver or OSPM code. The debug version of the code includes the debug 5951output 5952trace mechanism and has a much larger code and data size. Note that these 5953values will vary depending on the efficiency of the compiler and the 5954compiler options used during generation. 5955 5956 Previous Release: 5957 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 5958 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 5959 Current Release: 5960 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 5961 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 5962 5963 59642) iASL Compiler/Disassembler and Tools: 5965 5966Implemented an ANSI C version of the acpixtract utility. This version will 5967automatically extract the DSDT and all SSDTs from the input acpidump text 5968file and dump the binary output to separate files. It can also display a 5969summary of the input file including the headers for each table found and 5970will extract any single ACPI table, with any signature. (See 5971source/tools/acpixtract) 5972 5973---------------------------------------- 597410 March 2006. Summary of changes for version 20060310: 5975 59761) ACPI CA Core Subsystem: 5977 5978Tagged all external interfaces to the subsystem with the new 5979ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to assist 5980kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL 5981macro. The default definition is NULL. 5982 5983Added the ACPI_THREAD_ID type for the return value from AcpiOsGetThreadId. 5984This allows the host to define this as necessary to simplify kernel 5985integration. The default definition is ACPI_NATIVE_UINT. 5986 5987Fixed two interpreter problems related to error processing, the deletion 5988of 5989objects, and placing invalid pointers onto the internal operator result 5990stack. BZ 6028, 6151 (Valery Podrezov) 5991 5992Increased the reference count threshold where a warning is emitted for 5993large 5994reference counts in order to eliminate unnecessary warnings on systems 5995with 5996large namespaces (especially 64-bit.) Increased the value from 0x400 to 59970x800. 5998 5999Due to universal disagreement as to the meaning of the 'c' in the calloc() 6000function, the ACPI_MEM_CALLOCATE macro has been renamed to 6001ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'. 6002ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and 6003ACPI_FREE. 6004 6005Code and Data Size: These are the sizes for the acpica.lib produced by the 6006Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any 6007ACPI 6008driver or OSPM code. The debug version of the code includes the debug 6009output 6010trace mechanism and has a much larger code and data size. Note that these 6011values will vary depending on the efficiency of the compiler and the 6012compiler options used during generation. 6013 6014 Previous Release: 6015 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 6016 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 6017 Current Release: 6018 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 6019 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 6020 6021 60222) iASL Compiler/Disassembler: 6023 6024Disassembler: implemented support for symbolic resource descriptor 6025references. If a CreateXxxxField operator references a fixed offset within 6026a 6027resource descriptor, a name is assigned to the descriptor and the offset 6028is 6029translated to the appropriate resource tag and pathname. The addition of 6030this support brings the disassembled code very close to the original ASL 6031source code and helps eliminate run-time errors when the disassembled code 6032is modified (and recompiled) in such a way as to invalidate the original 6033fixed offsets. 6034 6035Implemented support for a Descriptor Name as the last parameter to the ASL 6036Register() macro. This parameter was inadvertently left out of the ACPI 6037specification, and will be added for ACPI 3.0b. 6038 6039Fixed a problem where the use of the "_OSI" string (versus the full path 6040"\_OSI") caused an internal compiler error. ("No back ptr to op") 6041 6042Fixed a problem with the error message that occurs when an invalid string 6043is 6044used for a _HID object (such as one with an embedded asterisk: 6045"*PNP010A".) 6046The correct message is now displayed. 6047 6048---------------------------------------- 604917 February 2006. Summary of changes for version 20060217: 6050 60511) ACPI CA Core Subsystem: 6052 6053Implemented a change to the IndexField support to match the behavior of 6054the 6055Microsoft AML interpreter. The value written to the Index register is now 6056a 6057byte offset, no longer an index based upon the width of the Data register. 6058This should fix IndexField problems seen on some machines where the Data 6059register is not exactly one byte wide. The ACPI specification will be 6060clarified on this point. 6061 6062Fixed a problem where several resource descriptor types could overrun the 6063internal descriptor buffer due to size miscalculation: VendorShort, 6064VendorLong, and Interrupt. This was noticed on IA64 machines, but could 6065affect all platforms. 6066 6067Fixed a problem where individual resource descriptors were misaligned 6068within 6069the internal buffer, causing alignment faults on IA64 platforms. 6070 6071Code and Data Size: These are the sizes for the acpica.lib produced by the 6072Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any 6073ACPI 6074driver or OSPM code. The debug version of the code includes the debug 6075output 6076trace mechanism and has a much larger code and data size. Note that these 6077values will vary depending on the efficiency of the compiler and the 6078compiler options used during generation. 6079 6080 Previous Release: 6081 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 6082 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 6083 Current Release: 6084 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 6085 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 6086 6087 60882) iASL Compiler/Disassembler: 6089 6090Implemented support for new reserved names: _WDG and _WED are Microsoft 6091extensions for Windows Instrumentation Management, _TDL is a new ACPI- 6092defined method (Throttling Depth Limit.) 6093 6094Fixed a problem where a zero-length VendorShort or VendorLong resource 6095descriptor was incorrectly emitted as a descriptor of length one. 6096 6097---------------------------------------- 609810 February 2006. Summary of changes for version 20060210: 6099 61001) ACPI CA Core Subsystem: 6101 6102Removed a couple of extraneous ACPI_ERROR messages that appeared during 6103normal execution. These became apparent after the conversion from 6104ACPI_DEBUG_PRINT. 6105 6106Fixed a problem where the CreateField operator could hang if the BitIndex 6107or 6108NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359) 6109 6110Fixed a problem where a DeRefOf operation on a buffer object incorrectly 6111failed with an exception. This also fixes a couple of related RefOf and 6112DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387) 6113 6114Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead 6115of 6116AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov, 6117BZ 61185480) 6119 6120Implemented a memory cleanup at the end of the execution of each iteration 6121of an AML While() loop, preventing the accumulation of outstanding 6122objects. 6123(Valery Podrezov, BZ 5427) 6124 6125Eliminated a chunk of duplicate code in the object resolution code. 6126(Valery 6127Podrezov, BZ 5336) 6128 6129Fixed several warnings during the 64-bit code generation. 6130 6131The AcpiSrc source code conversion tool now inserts one line of whitespace 6132after an if() statement that is followed immediately by a comment, 6133improving 6134readability of the Linux code. 6135 6136Code and Data Size: The current and previous library sizes for the core 6137subsystem are shown below. These are the code and data sizes for the 6138acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 6139values do not include any ACPI driver or OSPM code. The debug version of 6140the 6141code includes the debug output trace mechanism and has a much larger code 6142and data size. Note that these values will vary depending on the 6143efficiency 6144of the compiler and the compiler options used during generation. 6145 6146 Previous Release: 6147 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 6148 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 6149 Current Release: 6150 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 6151 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 6152 6153 61542) iASL Compiler/Disassembler: 6155 6156Fixed a problem with the disassembly of a BankField operator with a 6157complex 6158expression for the BankValue parameter. 6159 6160---------------------------------------- 616127 January 2006. Summary of changes for version 20060127: 6162 61631) ACPI CA Core Subsystem: 6164 6165Implemented support in the Resource Manager to allow unresolved namestring 6166references within resource package objects for the _PRT method. This 6167support 6168is in addition to the previously implemented unresolved reference support 6169within the AML parser. If the interpreter slack mode is enabled, these 6170unresolved references will be passed through to the caller as a NULL 6171package 6172entry. 6173 6174Implemented and deployed new macros and functions for error and warning 6175messages across the subsystem. These macros are simpler and generate less 6176code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION, 6177ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older 6178macros remain defined to allow ACPI drivers time to migrate to the new 6179macros. 6180 6181Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of the 6182Acquire/Release Lock OSL interfaces. 6183 6184Fixed a problem where Alias ASL operators are sometimes not correctly 6185resolved, in both the interpreter and the iASL compiler. 6186 6187Fixed several problems with the implementation of the 6188ConcatenateResTemplate 6189ASL operator. As per the ACPI specification, zero length buffers are now 6190treated as a single EndTag. One-length buffers always cause a fatal 6191exception. Non-zero length buffers that do not end with a full 2-byte 6192EndTag 6193cause a fatal exception. 6194 6195Fixed a possible structure overwrite in the AcpiGetObjectInfo external 6196interface. (With assistance from Thomas Renninger) 6197 6198Code and Data Size: The current and previous library sizes for the core 6199subsystem are shown below. These are the code and data sizes for the 6200acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 6201values do not include any ACPI driver or OSPM code. The debug version of 6202the 6203code includes the debug output trace mechanism and has a much larger code 6204and data size. Note that these values will vary depending on the 6205efficiency 6206of the compiler and the compiler options used during generation. 6207 6208 Previous Release: 6209 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 6210 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 6211 Current Release: 6212 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 6213 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 6214 6215 62162) iASL Compiler/Disassembler: 6217 6218Fixed an internal error that was generated for any forward references to 6219ASL 6220Alias objects. 6221 6222---------------------------------------- 622313 January 2006. Summary of changes for version 20060113: 6224 62251) ACPI CA Core Subsystem: 6226 6227Added 2006 copyright to all module headers and signons. This affects 6228virtually every file in the ACPICA core subsystem, iASL compiler, and the 6229utilities. 6230 6231Enhanced the ACPICA error reporting in order to simplify user migration to 6232the non-debug version of ACPICA. Replaced all instances of the 6233ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN debug 6234levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros, 6235respectively. This preserves all error and warning messages in the non- 6236debug 6237version of the ACPICA code (this has been referred to as the "debug lite" 6238option.) Over 200 cases were converted to create a total of over 380 6239error/warning messages across the ACPICA code. This increases the code and 6240data size of the default non-debug version of the code somewhat (about 624113K), 6242but all error/warning reporting may be disabled if desired (and code 6243eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time 6244configuration option. The size of the debug version of ACPICA remains 6245about 6246the same. 6247 6248Fixed a memory leak within the AML Debugger "Set" command. One object was 6249not properly deleted for every successful invocation of the command. 6250 6251Code and Data Size: The current and previous library sizes for the core 6252subsystem are shown below. These are the code and data sizes for the 6253acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 6254values do not include any ACPI driver or OSPM code. The debug version of 6255the 6256code includes the debug output trace mechanism and has a much larger code 6257and data size. Note that these values will vary depending on the 6258efficiency 6259of the compiler and the compiler options used during generation. 6260 6261 Previous Release: 6262 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 6263 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 6264 Current Release: 6265 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 6266 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 6267 6268 62692) iASL Compiler/Disassembler: 6270 6271The compiler now officially supports the ACPI 3.0a specification that was 6272released on December 30, 2005. (Specification is available at 6273www.acpi.info) 6274 6275---------------------------------------- 627616 December 2005. Summary of changes for version 20051216: 6277 62781) ACPI CA Core Subsystem: 6279 6280Implemented optional support to allow unresolved names within ASL Package 6281objects. A null object is inserted in the package when a named reference 6282cannot be located in the current namespace. Enabled via the interpreter 6283slack flag, this should eliminate AE_NOT_FOUND exceptions seen on machines 6284that contain such code. 6285 6286Implemented an optimization to the initialization sequence that can 6287improve 6288boot time. During ACPI device initialization, the _STA method is now run 6289if 6290and only if the _INI method exists. The _STA method is used to determine 6291if 6292the device is present; An _INI can only be run if _STA returns present, 6293but 6294it is a waste of time to run the _STA method if the _INI does not exist. 6295(Prototype and assistance from Dong Wei) 6296 6297Implemented use of the C99 uintptr_t for the pointer casting macros if it 6298is 6299available in the current compiler. Otherwise, the default (void *) cast is 6300used as before. 6301 6302Fixed some possible memory leaks found within the execution path of the 6303Break, Continue, If, and CreateField operators. (Valery Podrezov) 6304 6305Fixed a problem introduced in the 20051202 release where an exception is 6306generated during method execution if a control method attempts to declare 6307another method. 6308 6309Moved resource descriptor string constants that are used by both the AML 6310disassembler and AML debugger to the common utilities directory so that 6311these components are independent. 6312 6313Implemented support in the AcpiExec utility (-e switch) to globally ignore 6314exceptions during control method execution (method is not aborted.) 6315 6316Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix 6317generation. 6318 6319Code and Data Size: The current and previous library sizes for the core 6320subsystem are shown below. These are the code and data sizes for the 6321acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 6322values do not include any ACPI driver or OSPM code. The debug version of 6323the 6324code includes the debug output trace mechanism and has a much larger code 6325and data size. Note that these values will vary depending on the 6326efficiency 6327of the compiler and the compiler options used during generation. 6328 6329 Previous Release: 6330 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 6331 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 6332 Current Release: 6333 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 6334 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 6335 6336 63372) iASL Compiler/Disassembler: 6338 6339Fixed a problem where a CPU stack overflow fault could occur if a 6340recursive 6341method call was made from within a Return statement. 6342 6343---------------------------------------- 634402 December 2005. Summary of changes for version 20051202: 6345 63461) ACPI CA Core Subsystem: 6347 6348Modified the parsing of control methods to no longer create namespace 6349objects during the first pass of the parse. Objects are now created only 6350during the execute phase, at the moment the namespace creation operator is 6351encountered in the AML (Name, OperationRegion, CreateByteField, etc.) This 6352should eliminate ALREADY_EXISTS exceptions seen on some machines where 6353reentrant control methods are protected by an AML mutex. The mutex will 6354now 6355correctly block multiple threads from attempting to create the same object 6356more than once. 6357 6358Increased the number of available Owner Ids for namespace object tracking 6359from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen 6360on 6361some machines with a large number of ACPI tables (either static or 6362dynamic). 6363 6364Fixed a problem with the AcpiExec utility where a fault could occur when 6365the 6366-b switch (batch mode) is used. 6367 6368Enhanced the namespace dump routine to output the owner ID for each 6369namespace object. 6370 6371Code and Data Size: The current and previous library sizes for the core 6372subsystem are shown below. These are the code and data sizes for the 6373acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 6374values do not include any ACPI driver or OSPM code. The debug version of 6375the 6376code includes the debug output trace mechanism and has a much larger code 6377and data size. Note that these values will vary depending on the 6378efficiency 6379of the compiler and the compiler options used during generation. 6380 6381 Previous Release: 6382 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 6383 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 6384 Current Release: 6385 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 6386 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 6387 6388 63892) iASL Compiler/Disassembler: 6390 6391Fixed a parse error during compilation of certain Switch/Case constructs. 6392To 6393simplify the parse, the grammar now allows for multiple Default statements 6394and this error is now detected and flagged during the analysis phase. 6395 6396Disassembler: The disassembly now includes the contents of the original 6397table header within a comment at the start of the file. This includes the 6398name and version of the original ASL compiler. 6399 6400---------------------------------------- 640117 November 2005. Summary of changes for version 20051117: 6402 64031) ACPI CA Core Subsystem: 6404 6405Fixed a problem in the AML parser where the method thread count could be 6406decremented below zero if any errors occurred during the method parse 6407phase. 6408This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some 6409machines. 6410This also fixed a related regression with the mechanism that detects and 6411corrects methods that cannot properly handle reentrancy (related to the 6412deployment of the new OwnerId mechanism.) 6413 6414Eliminated the pre-parsing of control methods (to detect errors) during 6415table load. Related to the problem above, this was causing unwind issues 6416if 6417any errors occurred during the parse, and it seemed to be overkill. A 6418table 6419load should not be aborted if there are problems with any single control 6420method, thus rendering this feature rather pointless. 6421 6422Fixed a problem with the new table-driven resource manager where an 6423internal 6424buffer overflow could occur for small resource templates. 6425 6426Implemented a new external interface, AcpiGetVendorResource. This 6427interface 6428will find and return a vendor-defined resource descriptor within a _CRS or 6429_PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn 6430Helgaas. 6431 6432Removed the length limit (200) on string objects as per the upcoming ACPI 64333.0A specification. This affects the following areas of the interpreter: 64341) 6435any implicit conversion of a Buffer to a String, 2) a String object result 6436of the ASL Concatentate operator, 3) the String object result of the ASL 6437ToString operator. 6438 6439Fixed a problem in the Windows OS interface layer (OSL) where a 6440WAIT_FOREVER 6441on a semaphore object would incorrectly timeout. This allows the 6442multithreading features of the AcpiExec utility to work properly under 6443Windows. 6444 6445Updated the Linux makefiles for the iASL compiler and AcpiExec to include 6446the recently added file named "utresrc.c". 6447 6448Code and Data Size: The current and previous library sizes for the core 6449subsystem are shown below. These are the code and data sizes for the 6450acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 6451values do not include any ACPI driver or OSPM code. The debug version of 6452the 6453code includes the debug output trace mechanism and has a much larger code 6454and data size. Note that these values will vary depending on the 6455efficiency 6456of the compiler and the compiler options used during generation. 6457 6458 Previous Release: 6459 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 6460 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 6461 Current Release: 6462 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 6463 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 6464 6465 64662) iASL Compiler/Disassembler: 6467 6468Removed the limit (200) on string objects as per the upcoming ACPI 3.0A 6469specification. For the iASL compiler, this means that string literals 6470within 6471the source ASL can be of any length. 6472 6473Enhanced the listing output to dump the AML code for resource descriptors 6474immediately after the ASL code for each descriptor, instead of in a block 6475at 6476the end of the entire resource template. 6477 6478Enhanced the compiler debug output to dump the entire original parse tree 6479constructed during the parse phase, before any transforms are applied to 6480the 6481tree. The transformed tree is dumped also. 6482 6483---------------------------------------- 648402 November 2005. Summary of changes for version 20051102: 6485 64861) ACPI CA Core Subsystem: 6487 6488Modified the subsystem initialization sequence to improve GPE support. The 6489GPE initialization has been split into two parts in order to defer 6490execution 6491of the _PRW methods (Power Resources for Wake) until after the hardware is 6492fully initialized and the SCI handler is installed. This allows the _PRW 6493methods to access fields protected by the Global Lock. This will fix 6494systems 6495where a NO_GLOBAL_LOCK exception has been seen during initialization. 6496 6497Converted the ACPI internal object disassemble and display code within the 6498AML debugger to fully table-driven operation, reducing code size and 6499increasing maintainability. 6500 6501Fixed a regression with the ConcatenateResTemplate() ASL operator 6502introduced 6503in the 20051021 release. 6504 6505Implemented support for "local" internal ACPI object types within the 6506debugger "Object" command and the AcpiWalkNamespace external interfaces. 6507These local types include RegionFields, BankFields, IndexFields, Alias, 6508and 6509reference objects. 6510 6511Moved common AML resource handling code into a new file, "utresrc.c". This 6512code is shared by both the Resource Manager and the AML Debugger. 6513 6514Code and Data Size: The current and previous library sizes for the core 6515subsystem are shown below. These are the code and data sizes for the 6516acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 6517values do not include any ACPI driver or OSPM code. The debug version of 6518the 6519code includes the debug output trace mechanism and has a much larger code 6520and data size. Note that these values will vary depending on the 6521efficiency 6522of the compiler and the compiler options used during generation. 6523 6524 Previous Release: 6525 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 6526 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 6527 Current Release: 6528 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 6529 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 6530 6531 65322) iASL Compiler/Disassembler: 6533 6534Fixed a problem with very large initializer lists (more than 4000 6535elements) 6536for both Buffer and Package objects where the parse stack could overflow. 6537 6538Enhanced the pre-compile source code scan for non-ASCII characters to 6539ignore 6540characters within comment fields. The scan is now always performed and is 6541no 6542longer optional, detecting invalid characters within a source file 6543immediately rather than during the parse phase or later. 6544 6545Enhanced the ASL grammar definition to force early reductions on all list- 6546style grammar elements so that the overall parse stack usage is greatly 6547reduced. This should improve performance and reduce the possibility of 6548parse 6549stack overflow. 6550 6551Eliminated all reduce/reduce conflicts in the iASL parser generation. 6552Also, 6553with the addition of a %expected statement, the compiler generates from 6554source with no warnings. 6555 6556Fixed a possible segment fault in the disassembler if the input filename 6557does not contain a "dot" extension (Thomas Renninger). 6558 6559---------------------------------------- 656021 October 2005. Summary of changes for version 20051021: 6561 65621) ACPI CA Core Subsystem: 6563 6564Implemented support for the EM64T and other x86-64 processors. This 6565essentially entails recognizing that these processors support non-aligned 6566memory transfers. Previously, all 64-bit processors were assumed to lack 6567hardware support for non-aligned transfers. 6568 6569Completed conversion of the Resource Manager to nearly full table-driven 6570operation. Specifically, the resource conversion code (convert AML to 6571internal format and the reverse) and the debug code to dump internal 6572resource descriptors are fully table-driven, reducing code and data size 6573and 6574improving maintainability. 6575 6576The OSL interfaces for Acquire and Release Lock now use a 64-bit flag word 6577on 64-bit processors instead of a fixed 32-bit word. (With assistance from 6578Alexey Starikovskiy) 6579 6580Implemented support within the resource conversion code for the Type- 6581Specific byte within the various ACPI 3.0 *WordSpace macros. 6582 6583Fixed some issues within the resource conversion code for the type- 6584specific 6585flags for both Memory and I/O address resource descriptors. For Memory, 6586implemented support for the MTP and TTP flags. For I/O, split the TRS and 6587TTP flags into two separate fields. 6588 6589Code and Data Size: The current and previous library sizes for the core 6590subsystem are shown below. These are the code and data sizes for the 6591acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 6592values do not include any ACPI driver or OSPM code. The debug version of 6593the 6594code includes the debug output trace mechanism and has a much larger code 6595and data size. Note that these values will vary depending on the 6596efficiency 6597of the compiler and the compiler options used during generation. 6598 6599 Previous Release: 6600 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 6601 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 6602 Current Release: 6603 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 6604 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 6605 6606 6607 66082) iASL Compiler/Disassembler: 6609 6610Relaxed a compiler restriction that disallowed a ResourceIndex byte if the 6611corresponding ResourceSource string was not also present in a resource 6612descriptor declaration. This restriction caused problems with existing 6613AML/ASL code that includes the Index byte without the string. When such 6614AML 6615was disassembled, it could not be compiled without modification. Further, 6616the modified code created a resource template with a different size than 6617the 6618original, breaking code that used fixed offsets into the resource template 6619buffer. 6620 6621Removed a recent feature of the disassembler to ignore a lone 6622ResourceIndex 6623byte. This byte is now emitted if present so that the exact AML can be 6624reproduced when the disassembled code is recompiled. 6625 6626Improved comments and text alignment for the resource descriptor code 6627emitted by the disassembler. 6628 6629Implemented disassembler support for the ACPI 3.0 AccessSize field within 6630a 6631Register() resource descriptor. 6632 6633---------------------------------------- 663430 September 2005. Summary of changes for version 20050930: 6635 66361) ACPI CA Core Subsystem: 6637 6638Completed a major overhaul of the Resource Manager code - specifically, 6639optimizations in the area of the AML/internal resource conversion code. 6640The 6641code has been optimized to simplify and eliminate duplicated code, CPU 6642stack 6643use has been decreased by optimizing function parameters and local 6644variables, and naming conventions across the manager have been 6645standardized 6646for clarity and ease of maintenance (this includes function, parameter, 6647variable, and struct/typedef names.) The update may force changes in some 6648driver code, depending on how resources are handled by the host OS. 6649 6650All Resource Manager dispatch and information tables have been moved to a 6651single location for clarity and ease of maintenance. One new file was 6652created, named "rsinfo.c". 6653 6654The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to 6655guarantee that the argument is not evaluated twice, making them less prone 6656to macro side-effects. However, since there exists the possibility of 6657additional stack use if a particular compiler cannot optimize them (such 6658as 6659in the debug generation case), the original macros are optionally 6660available. 6661Note that some invocations of the return_VALUE macro may now cause size 6662mismatch warnings; the return_UINT8 and return_UINT32 macros are provided 6663to 6664eliminate these. (From Randy Dunlap) 6665 6666Implemented a new mechanism to enable debug tracing for individual control 6667methods. A new external interface, AcpiDebugTrace, is provided to enable 6668this mechanism. The intent is to allow the host OS to easily enable and 6669disable tracing for problematic control methods. This interface can be 6670easily exposed to a user or debugger interface if desired. See the file 6671psxface.c for details. 6672 6673AcpiUtCallocate will now return a valid pointer if a length of zero is 6674specified - a length of one is used and a warning is issued. This matches 6675the behavior of AcpiUtAllocate. 6676 6677Code and Data Size: The current and previous library sizes for the core 6678subsystem are shown below. These are the code and data sizes for the 6679acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 6680values do not include any ACPI driver or OSPM code. The debug version of 6681the 6682code includes the debug output trace mechanism and has a much larger code 6683and data size. Note that these values will vary depending on the 6684efficiency 6685of the compiler and the compiler options used during generation. 6686 6687 Previous Release: 6688 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 6689 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 6690 Current Release: 6691 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 6692 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 6693 6694 66952) iASL Compiler/Disassembler: 6696 6697A remark is issued if the effective compile-time length of a package or 6698buffer is zero. Previously, this was a warning. 6699 6700---------------------------------------- 670116 September 2005. Summary of changes for version 20050916: 6702 67031) ACPI CA Core Subsystem: 6704 6705Fixed a problem within the Resource Manager where support for the Generic 6706Register descriptor was not fully implemented. This descriptor is now 6707fully 6708recognized, parsed, disassembled, and displayed. 6709 6710Completely restructured the Resource Manager code to utilize table-driven 6711dispatch and lookup, eliminating many of the large switch() statements. 6712This 6713reduces overall subsystem code size and code complexity. Affects the 6714resource parsing and construction, disassembly, and debug dump output. 6715 6716Cleaned up and restructured the debug dump output for all resource 6717descriptors. Improved readability of the output and reduced code size. 6718 6719Fixed a problem where changes to internal data structures caused the 6720optional ACPI_MUTEX_DEBUG code to fail compilation if specified. 6721 6722Code and Data Size: The current and previous library sizes for the core 6723subsystem are shown below. These are the code and data sizes for the 6724acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 6725values do not include any ACPI driver or OSPM code. The debug version of 6726the 6727code includes the debug output trace mechanism and has a much larger code 6728and data size. Note that these values will vary depending on the 6729efficiency 6730of the compiler and the compiler options used during generation. 6731 6732 Previous Release: 6733 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 6734 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 6735 Current Release: 6736 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 6737 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 6738 6739 67402) iASL Compiler/Disassembler: 6741 6742Updated the disassembler to automatically insert an EndDependentFn() macro 6743into the ASL stream if this macro is missing in the original AML code, 6744simplifying compilation of the resulting ASL module. 6745 6746Fixed a problem in the disassembler where a disassembled ResourceSource 6747string (within a large resource descriptor) was not surrounded by quotes 6748and 6749not followed by a comma, causing errors when the resulting ASL module was 6750compiled. Also, escape sequences within a ResourceSource string are now 6751handled correctly (especially "\\") 6752 6753---------------------------------------- 675402 September 2005. Summary of changes for version 20050902: 6755 67561) ACPI CA Core Subsystem: 6757 6758Fixed a problem with the internal Owner ID allocation and deallocation 6759mechanisms for control method execution and recursive method invocation. 6760This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId" 6761messages seen on some systems. Recursive method invocation depth is 6762currently limited to 255. (Alexey Starikovskiy) 6763 6764Completely eliminated all vestiges of support for the "module-level 6765executable code" until this support is fully implemented and debugged. 6766This 6767should eliminate the NO_RETURN_VALUE exceptions seen during table load on 6768some systems that invoke this support. 6769 6770Fixed a problem within the resource manager code where the transaction 6771flags 6772for a 64-bit address descriptor were handled incorrectly in the type- 6773specific flag byte. 6774 6775Consolidated duplicate code within the address descriptor resource manager 6776code, reducing overall subsystem code size. 6777 6778Fixed a fault when using the AML debugger "disassemble" command to 6779disassemble individual control methods. 6780 6781Removed references to the "release_current" directory within the Unix 6782release package. 6783 6784Code and Data Size: The current and previous core subsystem library sizes 6785are shown below. These are the code and data sizes for the acpica.lib 6786produced by the Microsoft Visual C++ 6.0 compiler. These values do not 6787include any ACPI driver or OSPM code. The debug version of the code 6788includes 6789the debug output trace mechanism and has a much larger code and data size. 6790Note that these values will vary depending on the efficiency of the 6791compiler 6792and the compiler options used during generation. 6793 6794 Previous Release: 6795 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 6796 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 6797 Current Release: 6798 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 6799 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 6800 6801 68022) iASL Compiler/Disassembler: 6803 6804Implemented an error check for illegal duplicate values in the interrupt 6805and 6806dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and 6807Interrupt(). 6808 6809Implemented error checking for the Irq() and IrqNoFlags() macros to detect 6810too many values in the interrupt list (16 max) and invalid values in the 6811list (range 0 - 15) 6812 6813The maximum length string literal within an ASL file is now restricted to 6814200 characters as per the ACPI specification. 6815 6816Fixed a fault when using the -ln option (generate namespace listing). 6817 6818Implemented an error check to determine if a DescriptorName within a 6819resource descriptor has already been used within the current scope. 6820 6821---------------------------------------- 682215 August 2005. Summary of changes for version 20050815: 6823 68241) ACPI CA Core Subsystem: 6825 6826Implemented a full bytewise compare to determine if a table load request 6827is 6828attempting to load a duplicate table. The compare is performed if the 6829table 6830signatures and table lengths match. This will allow different tables with 6831the same OEM Table ID and revision to be loaded - probably against the 6832ACPI 6833specification, but discovered in the field nonetheless. 6834 6835Added the changes.txt logfile to each of the zipped release packages. 6836 6837Code and Data Size: Current and previous core subsystem library sizes are 6838shown below. These are the code and data sizes for the acpica.lib produced 6839by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6840any ACPI driver or OSPM code. The debug version of the code includes the 6841debug output trace mechanism and has a much larger code and data size. 6842Note 6843that these values will vary depending on the efficiency of the compiler 6844and 6845the compiler options used during generation. 6846 6847 Previous Release: 6848 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 6849 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 6850 Current Release: 6851 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 6852 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 6853 6854 68552) iASL Compiler/Disassembler: 6856 6857Fixed a problem where incorrect AML code could be generated for Package 6858objects if optimization is disabled (via the -oa switch). 6859 6860Fixed a problem with where incorrect AML code is generated for variable- 6861length packages when the package length is not specified and the number of 6862initializer values is greater than 255. 6863 6864 6865---------------------------------------- 686629 July 2005. Summary of changes for version 20050729: 6867 68681) ACPI CA Core Subsystem: 6869 6870Implemented support to ignore an attempt to install/load a particular ACPI 6871table more than once. Apparently there exists BIOS code that repeatedly 6872attempts to load the same SSDT upon certain events. With assistance from 6873Venkatesh Pallipadi. 6874 6875Restructured the main interface to the AML parser in order to correctly 6876handle all exceptional conditions. This will prevent leakage of the 6877OwnerId 6878resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on 6879some 6880machines. With assistance from Alexey Starikovskiy. 6881 6882Support for "module level code" has been disabled in this version due to a 6883number of issues that have appeared on various machines. The support can 6884be 6885enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem 6886compilation. When the issues are fully resolved, the code will be enabled 6887by 6888default again. 6889 6890Modified the internal functions for debug print support to define the 6891FunctionName parameter as a (const char *) for compatibility with compiler 6892built-in macros such as __FUNCTION__, etc. 6893 6894Linted the entire ACPICA source tree for both 32-bit and 64-bit. 6895 6896Implemented support to display an object count summary for the AML 6897Debugger 6898commands Object and Methods. 6899 6900Code and Data Size: Current and previous core subsystem library sizes are 6901shown below. These are the code and data sizes for the acpica.lib produced 6902by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6903any ACPI driver or OSPM code. The debug version of the code includes the 6904debug output trace mechanism and has a much larger code and data size. 6905Note 6906that these values will vary depending on the efficiency of the compiler 6907and 6908the compiler options used during generation. 6909 6910 Previous Release: 6911 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 6912 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 6913 Current Release: 6914 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 6915 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 6916 6917 69182) iASL Compiler/Disassembler: 6919 6920Fixed a regression that appeared in the 20050708 version of the compiler 6921where an error message was inadvertently emitted for invocations of the 6922_OSI 6923reserved control method. 6924 6925---------------------------------------- 692608 July 2005. Summary of changes for version 20050708: 6927 69281) ACPI CA Core Subsystem: 6929 6930The use of the CPU stack in the debug version of the subsystem has been 6931considerably reduced. Previously, a debug structure was declared in every 6932function that used the debug macros. This structure has been removed in 6933favor of declaring the individual elements as parameters to the debug 6934functions. This reduces the cumulative stack use during nested execution 6935of 6936ACPI function calls at the cost of a small increase in the code size of 6937the 6938debug version of the subsystem. With assistance from Alexey Starikovskiy 6939and 6940Len Brown. 6941 6942Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent 6943headers to define a macro that will return the current function name at 6944runtime (such as __FUNCTION__ or _func_, etc.) The function name is used 6945by 6946the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the 6947compiler-dependent header, the function name is saved on the CPU stack 6948(one 6949pointer per function.) This mechanism is used because apparently there 6950exists no standard ANSI-C defined macro that that returns the function 6951name. 6952 6953Redesigned and reimplemented the "Owner ID" mechanism used to track 6954namespace objects created/deleted by ACPI tables and control method 6955execution. A bitmap is now used to allocate and free the IDs, thus solving 6956the wraparound problem present in the previous implementation. The size of 6957the namespace node descriptor was reduced by 2 bytes as a result (Alexey 6958Starikovskiy). 6959 6960Removed the UINT32_BIT and UINT16_BIT types that were used for the 6961bitfield 6962flag definitions within the headers for the predefined ACPI tables. These 6963have been replaced by UINT8_BIT in order to increase the code portability 6964of 6965the subsystem. If the use of UINT8 remains a problem, we may be forced to 6966eliminate bitfields entirely because of a lack of portability. 6967 6968Enhanced the performance of the AcpiUtUpdateObjectReference procedure. 6969This 6970is a frequently used function and this improvement increases the 6971performance 6972of the entire subsystem (Alexey Starikovskiy). 6973 6974Fixed several possible memory leaks and the inverse - premature object 6975deletion (Alexey Starikovskiy). 6976 6977Code and Data Size: Current and previous core subsystem library sizes are 6978shown below. These are the code and data sizes for the acpica.lib produced 6979by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6980any ACPI driver or OSPM code. The debug version of the code includes the 6981debug output trace mechanism and has a much larger code and data size. 6982Note 6983that these values will vary depending on the efficiency of the compiler 6984and 6985the compiler options used during generation. 6986 6987 Previous Release: 6988 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 6989 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 6990 Current Release: 6991 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 6992 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 6993 6994---------------------------------------- 699524 June 2005. Summary of changes for version 20050624: 6996 69971) ACPI CA Core Subsystem: 6998 6999Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for 7000the host-defined cache object. This allows the OSL implementation to 7001define 7002and type this object in any manner desired, simplifying the OSL 7003implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for 7004Linux, and should be defined in the OS-specific header file for other 7005operating systems as required. 7006 7007Changed the interface to AcpiOsAcquireObject to directly return the 7008requested object as the function return (instead of ACPI_STATUS.) This 7009change was made for performance reasons, since this is the purpose of the 7010interface in the first place. AcpiOsAcquireObject is now similar to the 7011AcpiOsAllocate interface. 7012 7013Implemented a new AML debugger command named Businfo. This command 7014displays 7015information about all devices that have an associate _PRT object. The 7016_ADR, 7017_HID, _UID, and _CID are displayed for these devices. 7018 7019Modified the initialization sequence in AcpiInitializeSubsystem to call 7020the 7021OSL interface AcpiOslInitialize first, before any local initialization. 7022This 7023change was required because the global initialization now calls OSL 7024interfaces. 7025 7026Enhanced the Dump command to display the entire contents of Package 7027objects 7028(including all sub-objects and their values.) 7029 7030Restructured the code base to split some files because of size and/or 7031because the code logically belonged in a separate file. New files are 7032listed 7033below. All makefiles and project files included in the ACPI CA release 7034have 7035been updated. 7036 utilities/utcache.c /* Local cache interfaces */ 7037 utilities/utmutex.c /* Local mutex support */ 7038 utilities/utstate.c /* State object support */ 7039 interpreter/parser/psloop.c /* Main AML parse loop */ 7040 7041Code and Data Size: Current and previous core subsystem library sizes are 7042shown below. These are the code and data sizes for the acpica.lib produced 7043by the Microsoft Visual C++ 6.0 compiler, and these values do not include 7044any ACPI driver or OSPM code. The debug version of the code includes the 7045debug output trace mechanism and has a much larger code and data size. 7046Note 7047that these values will vary depending on the efficiency of the compiler 7048and 7049the compiler options used during generation. 7050 7051 Previous Release: 7052 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 7053 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 7054 Current Release: 7055 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 7056 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 7057 7058 70592) iASL Compiler/Disassembler: 7060 7061Fixed a regression introduced in version 20050513 where the use of a 7062Package 7063object within a Case() statement caused a compile time exception. The 7064original behavior has been restored (a Match() operator is emitted.) 7065 7066---------------------------------------- 706717 June 2005. Summary of changes for version 20050617: 7068 70691) ACPI CA Core Subsystem: 7070 7071Moved the object cache operations into the OS interface layer (OSL) to 7072allow 7073the host OS to handle these operations if desired (for example, the Linux 7074OSL will invoke the slab allocator). This support is optional; the compile 7075time define ACPI_USE_LOCAL_CACHE may be used to utilize the original cache 7076code in the ACPI CA core. The new OSL interfaces are shown below. See 7077utalloc.c for an example implementation, and acpiosxf.h for the exact 7078interface definitions. With assistance from Alexey Starikovskiy. 7079 AcpiOsCreateCache 7080 AcpiOsDeleteCache 7081 AcpiOsPurgeCache 7082 AcpiOsAcquireObject 7083 AcpiOsReleaseObject 7084 7085Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to 7086return 7087and restore a flags parameter. This fits better with many OS lock models. 7088Note: the current execution state (interrupt handler or not) is no longer 7089passed to these interfaces. If necessary, the OSL must determine this 7090state 7091by itself, a simple and fast operation. With assistance from Alexey 7092Starikovskiy. 7093 7094Fixed a problem in the ACPI table handling where a valid XSDT was assumed 7095present if the revision of the RSDP was 2 or greater. According to the 7096ACPI 7097specification, the XSDT is optional in all cases, and the table manager 7098therefore now checks for both an RSDP >=2 and a valid XSDT pointer. 7099Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs contain 7100only the RSDT. 7101 7102Fixed an interpreter problem with the Mid() operator in the case of an 7103input 7104string where the resulting output string is of zero length. It now 7105correctly 7106returns a valid, null terminated string object instead of a string object 7107with a null pointer. 7108 7109Fixed a problem with the control method argument handling to allow a store 7110to an Arg object that already contains an object of type Device. The 7111Device 7112object is now correctly overwritten. Previously, an error was returned. 7113 7114 7115Enhanced the debugger Find command to emit object values in addition to 7116the 7117found object pathnames. The output format is the same as the dump 7118namespace 7119command. 7120 7121Enhanced the debugger Set command. It now has the ability to set the value 7122of any Named integer object in the namespace (Previously, only method 7123locals 7124and args could be set.) 7125 7126Code and Data Size: Current and previous core subsystem library sizes are 7127shown below. These are the code and data sizes for the acpica.lib produced 7128by the Microsoft Visual C++ 6.0 compiler, and these values do not include 7129any ACPI driver or OSPM code. The debug version of the code includes the 7130debug output trace mechanism and has a much larger code and data size. 7131Note 7132that these values will vary depending on the efficiency of the compiler 7133and 7134the compiler options used during generation. 7135 7136 Previous Release: 7137 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 7138 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 7139 Current Release: 7140 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 7141 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 7142 7143 71442) iASL Compiler/Disassembler: 7145 7146Fixed a regression in the disassembler where if/else/while constructs were 7147output incorrectly. This problem was introduced in the previous release 7148(20050526). This problem also affected the single-step disassembly in the 7149debugger. 7150 7151Fixed a problem where compiling the reserved _OSI method would randomly 7152(but 7153rarely) produce compile errors. 7154 7155Enhanced the disassembler to emit compilable code in the face of incorrect 7156AML resource descriptors. If the optional ResourceSourceIndex is present, 7157but the ResourceSource is not, do not emit the ResourceSourceIndex in the 7158disassembly. Otherwise, the resulting code cannot be compiled without 7159errors. 7160 7161---------------------------------------- 716226 May 2005. Summary of changes for version 20050526: 7163 71641) ACPI CA Core Subsystem: 7165 7166Implemented support to execute Type 1 and Type 2 AML opcodes appearing at 7167the module level (not within a control method.) These opcodes are executed 7168exactly once at the time the table is loaded. This type of code was legal 7169up 7170until the release of ACPI 2.0B (2002) and is now supported within ACPI CA 7171in 7172order to provide backwards compatibility with earlier BIOS 7173implementations. 7174This eliminates the "Encountered executable code at module level" warning 7175that was previously generated upon detection of such code. 7176 7177Fixed a problem in the interpreter where an AE_NOT_FOUND exception could 7178inadvertently be generated during the lookup of namespace objects in the 7179second pass parse of ACPI tables and control methods. It appears that this 7180problem could occur during the resolution of forward references to 7181namespace 7182objects. 7183 7184Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function, 7185corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This 7186allows the deadlock detection debug code to be compiled out in the normal 7187case, improving mutex performance (and overall subsystem performance) 7188considerably. 7189 7190Implemented a handful of miscellaneous fixes for possible memory leaks on 7191error conditions and error handling control paths. These fixes were 7192suggested by FreeBSD and the Coverity Prevent source code analysis tool. 7193 7194Added a check for a null RSDT pointer in AcpiGetFirmwareTable (tbxfroot.c) 7195to prevent a fault in this error case. 7196 7197Code and Data Size: Current and previous core subsystem library sizes are 7198shown below. These are the code and data sizes for the acpica.lib produced 7199by the Microsoft Visual C++ 6.0 compiler, and these values do not include 7200any ACPI driver or OSPM code. The debug version of the code includes the 7201debug output trace mechanism and has a much larger code and data size. 7202Note 7203that these values will vary depending on the efficiency of the compiler 7204and 7205the compiler options used during generation. 7206 7207 Previous Release: 7208 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 7209 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 7210 Current Release: 7211 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 7212 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 7213 7214 72152) iASL Compiler/Disassembler: 7216 7217Implemented support to allow Type 1 and Type 2 ASL operators to appear at 7218the module level (not within a control method.) These operators will be 7219executed once at the time the table is loaded. This type of code was legal 7220up until the release of ACPI 2.0B (2002) and is now supported by the iASL 7221compiler in order to provide backwards compatibility with earlier BIOS ASL 7222code. 7223 7224The ACPI integer width (specified via the table revision ID or the -r 7225override, 32 or 64 bits) is now used internally during compile-time 7226constant 7227folding to ensure that constants are truncated to 32 bits if necessary. 7228Previously, the revision ID value was only emitted in the AML table 7229header. 7230 7231An error message is now generated for the Mutex and Method operators if 7232the 7233SyncLevel parameter is outside the legal range of 0 through 15. 7234 7235Fixed a problem with the Method operator ParameterTypes list handling 7236(ACPI 72373.0). Previously, more than 2 types or 2 arguments generated a syntax 7238error. 7239The actual underlying implementation of method argument typechecking is 7240still under development, however. 7241 7242---------------------------------------- 724313 May 2005. Summary of changes for version 20050513: 7244 72451) ACPI CA Core Subsystem: 7246 7247Implemented support for PCI Express root bridges -- added support for 7248device 7249PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup. 7250 7251The interpreter now automatically truncates incoming 64-bit constants to 725232 7253bits if currently executing out of a 32-bit ACPI table (Revision < 2). 7254This 7255also affects the iASL compiler constant folding. (Note: as per below, the 7256iASL compiler no longer allows 64-bit constants within 32-bit tables.) 7257 7258Fixed a problem where string and buffer objects with "static" pointers 7259(pointers to initialization data within an ACPI table) were not handled 7260consistently. The internal object copy operation now always copies the 7261data 7262to a newly allocated buffer, regardless of whether the source object is 7263static or not. 7264 7265Fixed a problem with the FromBCD operator where an implicit result 7266conversion was improperly performed while storing the result to the target 7267operand. Since this is an "explicit conversion" operator, the implicit 7268conversion should never be performed on the output. 7269 7270Fixed a problem with the CopyObject operator where a copy to an existing 7271named object did not always completely overwrite the existing object 7272stored 7273at name. Specifically, a buffer-to-buffer copy did not delete the existing 7274buffer. 7275 7276Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces and 7277structs for consistency. 7278 7279Code and Data Size: Current and previous core subsystem library sizes are 7280shown below. These are the code and data sizes for the acpica.lib produced 7281by the Microsoft Visual C++ 6.0 compiler, and these values do not include 7282any ACPI driver or OSPM code. The debug version of the code includes the 7283debug output trace mechanism and has a much larger code and data size. 7284Note 7285that these values will vary depending on the efficiency of the compiler 7286and 7287the compiler options used during generation. 7288 7289 Previous Release: 7290 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 7291 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 7292 Current Release: (Same sizes) 7293 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 7294 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 7295 7296 72972) iASL Compiler/Disassembler: 7298 7299The compiler now emits a warning if an attempt is made to generate a 64- 7300bit 7301integer constant from within a 32-bit ACPI table (Revision < 2). The 7302integer 7303is truncated to 32 bits. 7304 7305Fixed a problem with large package objects: if the static length of the 7306package is greater than 255, the "variable length package" opcode is 7307emitted. Previously, this caused an error. This requires an update to the 7308ACPI spec, since it currently (incorrectly) states that packages larger 7309than 7310255 elements are not allowed. 7311 7312The disassembler now correctly handles variable length packages and 7313packages 7314larger than 255 elements. 7315 7316---------------------------------------- 731708 April 2005. Summary of changes for version 20050408: 7318 73191) ACPI CA Core Subsystem: 7320 7321Fixed three cases in the interpreter where an "index" argument to an ASL 7322function was still (internally) 32 bits instead of the required 64 bits. 7323This was the Index argument to the Index, Mid, and Match operators. 7324 7325The "strupr" function is now permanently local (AcpiUtStrupr), since this 7326is 7327not a POSIX-defined function and not present in most kernel-level C 7328libraries. All references to the C library strupr function have been 7329removed 7330from the headers. 7331 7332Completed the deployment of static functions/prototypes. All prototypes 7333with 7334the static attribute have been moved from the headers to the owning C 7335file. 7336 7337Implemented an extract option (-e) for the AcpiBin utility (AML binary 7338utility). This option allows the utility to extract individual ACPI tables 7339from the output of AcpiDmp. It provides the same functionality of the 7340acpixtract.pl perl script without the worry of setting the correct perl 7341options. AcpiBin runs on Windows and has not yet been generated/validated 7342in 7343the Linux/Unix environment (but should be soon). 7344 7345Updated and fixed the table dump option for AcpiBin (-d). This option 7346converts a single ACPI table to a hex/ascii file, similar to the output of 7347AcpiDmp. 7348 7349Code and Data Size: Current and previous core subsystem library sizes are 7350shown below. These are the code and data sizes for the acpica.lib produced 7351by the Microsoft Visual C++ 6.0 compiler, and these values do not include 7352any ACPI driver or OSPM code. The debug version of the code includes the 7353debug output trace mechanism and has a much larger code and data size. 7354Note 7355that these values will vary depending on the efficiency of the compiler 7356and 7357the compiler options used during generation. 7358 7359 Previous Release: 7360 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 7361 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 7362 Current Release: 7363 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 7364 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 7365 7366 73672) iASL Compiler/Disassembler: 7368 7369Disassembler fix: Added a check to ensure that the table length found in 7370the 7371ACPI table header within the input file is not longer than the actual 7372input 7373file size. This indicates some kind of file or table corruption. 7374 7375---------------------------------------- 737629 March 2005. Summary of changes for version 20050329: 7377 73781) ACPI CA Core Subsystem: 7379 7380An error is now generated if an attempt is made to create a Buffer Field 7381of 7382length zero (A CreateField with a length operand of zero.) 7383 7384The interpreter now issues a warning whenever executable code at the 7385module 7386level is detected during ACPI table load. This will give some idea of the 7387prevalence of this type of code. 7388 7389Implemented support for references to named objects (other than control 7390methods) within package objects. 7391 7392Enhanced package object output for the debug object. Package objects are 7393now 7394completely dumped, showing all elements. 7395 7396Enhanced miscellaneous object output for the debug object. Any object can 7397now be written to the debug object (for example, a device object can be 7398written, and the type of the object will be displayed.) 7399 7400The "static" qualifier has been added to all local functions across both 7401the 7402core subsystem and the iASL compiler. 7403 7404The number of "long" lines (> 80 chars) within the source has been 7405significantly reduced, by about 1/3. 7406 7407Cleaned up all header files to ensure that all CA/iASL functions are 7408prototyped (even static functions) and the formatting is consistent. 7409 7410Two new header files have been added, acopcode.h and acnames.h. 7411 7412Removed several obsolete functions that were no longer used. 7413 7414Code and Data Size: Current and previous core subsystem library sizes are 7415shown below. These are the code and data sizes for the acpica.lib produced 7416by the Microsoft Visual C++ 6.0 compiler, and these values do not include 7417any ACPI driver or OSPM code. The debug version of the code includes the 7418debug output trace mechanism and has a much larger code and data size. 7419Note 7420that these values will vary depending on the efficiency of the compiler 7421and 7422the compiler options used during generation. 7423 7424 Previous Release: 7425 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 7426 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 7427 Current Release: 7428 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 7429 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 7430 7431 7432 74332) iASL Compiler/Disassembler: 7434 7435Fixed a problem with the resource descriptor generation/support. For the 7436ResourceSourceIndex and the ResourceSource fields, both must be present, 7437or 7438both must be not present - can't have one without the other. 7439 7440The compiler now returns non-zero from the main procedure if any errors 7441have 7442occurred during the compilation. 7443 7444 7445---------------------------------------- 744609 March 2005. Summary of changes for version 20050309: 7447 74481) ACPI CA Core Subsystem: 7449 7450The string-to-buffer implicit conversion code has been modified again 7451after 7452a change to the ACPI specification. In order to match the behavior of the 7453other major ACPI implementation, the target buffer is no longer truncated 7454if 7455the source string is smaller than an existing target buffer. This change 7456requires an update to the ACPI spec, and should eliminate the recent 7457AE_AML_BUFFER_LIMIT issues. 7458 7459The "implicit return" support was rewritten to a new algorithm that solves 7460the general case. Rather than attempt to determine when a method is about 7461to 7462exit, the result of every ASL operator is saved momentarily until the very 7463next ASL operator is executed. Therefore, no matter how the method exits, 7464there will always be a saved implicit return value. This feature is only 7465enabled with the AcpiGbl_EnableInterpreterSlack flag, and should eliminate 7466AE_AML_NO_RETURN_VALUE errors when enabled. 7467 7468Implemented implicit conversion support for the predicate (operand) of the 7469If, Else, and While operators. String and Buffer arguments are 7470automatically 7471converted to Integers. 7472 7473Changed the string-to-integer conversion behavior to match the new ACPI 7474errata: "If no integer object exists, a new integer is created. The ASCII 7475string is interpreted as a hexadecimal constant. Each string character is 7476interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting 7477with the first character as the most significant digit, and ending with 7478the 7479first non-hexadecimal character or end-of-string." This means that the 7480first 7481non-hex character terminates the conversion and this is the code that was 7482changed. 7483 7484Fixed a problem where the ObjectType operator would fail (fault) when used 7485on an Index of a Package which pointed to a null package element. The 7486operator now properly returns zero (Uninitialized) in this case. 7487 7488Fixed a problem where the While operator used excessive memory by not 7489properly popping the result stack during execution. There was no memory 7490leak 7491after execution, however. (Code provided by Valery Podrezov.) 7492 7493Fixed a problem where references to control methods within Package objects 7494caused the method to be invoked, instead of producing a reference object 7495pointing to the method. 7496 7497Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree) to 7498improve performance and reduce code size. (Code provided by Alexey 7499Starikovskiy.) 7500 7501Code and Data Size: Current and previous core subsystem library sizes are 7502shown below. These are the code and data sizes for the acpica.lib produced 7503by the Microsoft Visual C++ 6.0 compiler, and these values do not include 7504any ACPI driver or OSPM code. The debug version of the code includes the 7505debug output trace mechanism and has a much larger code and data size. 7506Note 7507that these values will vary depending on the efficiency of the compiler 7508and 7509the compiler options used during generation. 7510 7511 Previous Release: 7512 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 7513 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 7514 Current Release: 7515 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 7516 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 7517 7518 75192) iASL Compiler/Disassembler: 7520 7521Fixed a problem with the Return operator with no arguments. Since the AML 7522grammar for the byte encoding requires an operand for the Return opcode, 7523the 7524compiler now emits a Return(Zero) for this case. An ACPI specification 7525update has been written for this case. 7526 7527For tables other than the DSDT, namepath optimization is automatically 7528disabled. This is because SSDTs can be loaded anywhere in the namespace, 7529the 7530compiler has no knowledge of where, and thus cannot optimize namepaths. 7531 7532Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was 7533inadvertently omitted from the ACPI specification, and will require an 7534update to the spec. 7535 7536The source file scan for ASCII characters is now optional (-a). This 7537change 7538was made because some vendors place non-ascii characters within comments. 7539However, the scan is simply a brute-force byte compare to ensure all 7540characters in the file are in the range 0x00 to 0x7F. 7541 7542Fixed a problem with the CondRefOf operator where the compiler was 7543inappropriately checking for the existence of the target. Since the point 7544of 7545the operator is to check for the existence of the target at run-time, the 7546compiler no longer checks for the target existence. 7547 7548Fixed a problem where errors generated from the internal AML interpreter 7549during constant folding were not handled properly, causing a fault. 7550 7551Fixed a problem with overly aggressive range checking for the Stall 7552operator. The valid range (max 255) is now only checked if the operand is 7553of 7554type Integer. All other operand types cannot be statically checked. 7555 7556Fixed a problem where control method references within the RefOf, DeRefOf, 7557and ObjectType operators were not treated properly. They are now treated 7558as 7559actual references, not method invocations. 7560 7561Fixed and enhanced the "list namespace" option (-ln). This option was 7562broken 7563a number of releases ago. 7564 7565Improved error handling for the Field, IndexField, and BankField 7566operators. 7567The compiler now cleanly reports and recovers from errors in the field 7568component (FieldUnit) list. 7569 7570Fixed a disassembler problem where the optional ResourceDescriptor fields 7571TRS and TTP were not always handled correctly. 7572 7573Disassembler - Comments in output now use "//" instead of "/*" 7574 7575---------------------------------------- 757628 February 2005. Summary of changes for version 20050228: 7577 75781) ACPI CA Core Subsystem: 7579 7580Fixed a problem where the result of an Index() operator (an object 7581reference) must increment the reference count on the target object for the 7582life of the object reference. 7583 7584Implemented AML Interpreter and Debugger support for the new ACPI 3.0 7585Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and 7586WordSpace 7587resource descriptors. 7588 7589Implemented support in the _OSI method for the ACPI 3.0 "Extended Address 7590Space Descriptor" string, indicating interpreter support for the 7591descriptors 7592above. 7593 7594Implemented header support for the new ACPI 3.0 FADT flag bits. 7595 7596Implemented header support for the new ACPI 3.0 PCI Express bits for the 7597PM1 7598status/enable registers. 7599 7600Updated header support for the MADT processor local Apic struct and MADT 7601platform interrupt source struct for new ACPI 3.0 fields. 7602 7603Implemented header support for the SRAT and SLIT ACPI tables. 7604 7605Implemented the -s switch in AcpiExec to enable the "InterpreterSlack" 7606flag 7607at runtime. 7608 7609Code and Data Size: Current and previous core subsystem library sizes are 7610shown below. These are the code and data sizes for the acpica.lib produced 7611by the Microsoft Visual C++ 6.0 compiler, and these values do not include 7612any ACPI driver or OSPM code. The debug version of the code includes the 7613debug output trace mechanism and has a much larger code and data size. 7614Note 7615that these values will vary depending on the efficiency of the compiler 7616and 7617the compiler options used during generation. 7618 7619 Previous Release: 7620 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 7621 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 7622 Current Release: 7623 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 7624 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 7625 7626 76272) iASL Compiler/Disassembler: 7628 7629Fixed a problem with the internal 64-bit String-to-integer conversion with 7630strings less than two characters long. 7631 7632Fixed a problem with constant folding where the result of the Index() 7633operator can not be considered a constant. This means that Index() cannot 7634be 7635a type3 opcode and this will require an update to the ACPI specification. 7636 7637Disassembler: Implemented support for the TTP, MTP, and TRS resource 7638descriptor fields. These fields were inadvertently ignored and not output 7639in 7640the disassembly of the resource descriptor. 7641 7642 7643 ---------------------------------------- 764411 February 2005. Summary of changes for version 20050211: 7645 76461) ACPI CA Core Subsystem: 7647 7648Implemented ACPI 3.0 support for implicit conversion within the Match() 7649operator. MatchObjects can now be of type integer, buffer, or string 7650instead 7651of just type integer. Package elements are implicitly converted to the 7652type 7653of the MatchObject. This change aligns the behavior of Match() with the 7654behavior of the other logical operators (LLess(), etc.) It also requires 7655an 7656errata change to the ACPI specification as this support was intended for 7657ACPI 3.0, but was inadvertently omitted. 7658 7659Fixed a problem with the internal implicit "to buffer" conversion. Strings 7660that are converted to buffers will cause buffer truncation if the string 7661is 7662smaller than the target buffer. Integers that are converted to buffers 7663will 7664not cause buffer truncation, only zero extension (both as per the ACPI 7665spec.) The problem was introduced when code was added to truncate the 7666buffer, but this should not be performed in all cases, only the string 7667case. 7668 7669Fixed a problem with the Buffer and Package operators where the 7670interpreter 7671would get confused if two such operators were used as operands to an ASL 7672operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result 7673stack was not being popped after the execution of these operators, 7674resulting 7675in an AE_NO_RETURN_VALUE exception. 7676 7677Fixed a problem with constructs of the form Store(Index(...),...). The 7678reference object returned from Index was inadvertently resolved to an 7679actual 7680value. This problem was introduced in version 20050114 when the behavior 7681of 7682Store() was modified to restrict the object types that can be used as the 7683source operand (to match the ACPI specification.) 7684 7685Reduced excessive stack use within the AcpiGetObjectInfo procedure. 7686 7687Added a fix to aclinux.h to allow generation of AcpiExec on Linux. 7688 7689Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct. 7690 7691Code and Data Size: Current and previous core subsystem library sizes are 7692shown below. These are the code and data sizes for the acpica.lib produced 7693by the Microsoft Visual C++ 6.0 compiler, and these values do not include 7694any ACPI driver or OSPM code. The debug version of the code includes the 7695debug output trace mechanism and has a much larger code and data size. 7696Note 7697that these values will vary depending on the efficiency of the compiler 7698and 7699the compiler options used during generation. 7700 7701 Previous Release: 7702 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 7703 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 7704 Current Release: 7705 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 7706 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 7707 7708 77092) iASL Compiler/Disassembler: 7710 7711Fixed a code generation problem in the constant folding optimization code 7712where incorrect code was generated if a constant was reduced to a buffer 7713object (i.e., a reduced type 5 opcode.) 7714 7715Fixed a typechecking problem for the ToBuffer operator. Caused by an 7716incorrect return type in the internal opcode information table. 7717 7718---------------------------------------- 771925 January 2005. Summary of changes for version 20050125: 7720 77211) ACPI CA Core Subsystem: 7722 7723Fixed a recently introduced problem with the Global Lock where the 7724underlying semaphore was not created. This problem was introduced in 7725version 20050114, and caused an AE_AML_NO_OPERAND exception during an 7726Acquire() operation on _GL. 7727 7728The local object cache is now optional, and is disabled by default. Both 7729AcpiExec and the iASL compiler enable the cache because they run in user 7730mode and this enhances their performance. #define ACPI_ENABLE_OBJECT_CACHE 7731to enable the local cache. 7732 7733Fixed an issue in the internal function AcpiUtEvaluateObject concerning 7734the 7735optional "implicit return" support where an error was returned if no 7736return 7737object was expected, but one was implicitly returned. AE_OK is now 7738returned 7739in this case and the implicitly returned object is deleted. 7740AcpiUtEvaluateObject is only occasionally used, and only to execute 7741reserved 7742methods such as _STA and _INI where the return type is known up front. 7743 7744Fixed a few issues with the internal convert-to-integer code. It now 7745returns 7746an error if an attempt is made to convert a null string, a string of only 7747blanks/tabs, or a zero-length buffer. This affects both implicit 7748conversion 7749and explicit conversion via the ToInteger() operator. 7750 7751The internal debug code in AcpiUtAcquireMutex has been commented out. It 7752is 7753not needed for normal operation and should increase the performance of the 7754entire subsystem. The code remains in case it is needed for debug purposes 7755again. 7756 7757The AcpiExec source and makefile are included in the Unix/Linux package 7758for 7759the first time. 7760 7761Code and Data Size: Current and previous core subsystem library sizes are 7762shown below. These are the code and data sizes for the acpica.lib produced 7763by the Microsoft Visual C++ 6.0 compiler, and these values do not include 7764any ACPI driver or OSPM code. The debug version of the code includes the 7765debug output trace mechanism and has a much larger code and data size. 7766Note 7767that these values will vary depending on the efficiency of the compiler 7768and 7769the compiler options used during generation. 7770 7771 Previous Release: 7772 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 7773 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 7774 Current Release: 7775 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 7776 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 7777 77782) iASL Compiler/Disassembler: 7779 7780Switch/Case support: A warning is now issued if the type of the Switch 7781value 7782cannot be determined at compile time. For example, Switch(Arg0) will 7783generate the warning, and the type is assumed to be an integer. As per the 7784ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate 7785the 7786warning. 7787 7788Switch/Case support: Implemented support for buffer and string objects as 7789the switch value. This is an ACPI 3.0 feature, now that LEqual supports 7790buffers and strings. 7791 7792Switch/Case support: The emitted code for the LEqual() comparisons now 7793uses 7794the switch value as the first operand, not the second. The case value is 7795now 7796the second operand, and this allows the case value to be implicitly 7797converted to the type of the switch value, not the other way around. 7798 7799Switch/Case support: Temporary variables are now emitted immediately 7800within 7801the control method, not at the global level. This means that there are now 780236 temps available per-method, not 36 temps per-module as was the case 7803with 7804the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.) 7805 7806---------------------------------------- 780714 January 2005. Summary of changes for version 20050114: 7808 7809Added 2005 copyright to all module headers. This affects every module in 7810the core subsystem, iASL compiler, and the utilities. 7811 78121) ACPI CA Core Subsystem: 7813 7814Fixed an issue with the String-to-Buffer conversion code where the string 7815null terminator was not included in the buffer after conversion, but there 7816is existing ASL that assumes the string null terminator is included. This 7817is 7818the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was 7819introduced in the previous version when the code was updated to correctly 7820set the converted buffer size as per the ACPI specification. The ACPI spec 7821is ambiguous and will be updated to specify that the null terminator must 7822be 7823included in the converted buffer. This also affects the ToBuffer() ASL 7824operator. 7825 7826Fixed a problem with the Mid() ASL/AML operator where it did not work 7827correctly on Buffer objects. Newly created sub-buffers were not being 7828marked 7829as initialized. 7830 7831 7832Fixed a problem in AcpiTbFindTable where incorrect string compares were 7833performed on the OemId and OemTableId table header fields. These fields 7834are 7835not null terminated, so strncmp is now used instead of strcmp. 7836 7837Implemented a restriction on the Store() ASL/AML operator to align the 7838behavior with the ACPI specification. Previously, any object could be 7839used 7840as the source operand. Now, the only objects that may be used are 7841Integers, 7842Buffers, Strings, Packages, Object References, and DDB Handles. If 7843necessary, the original behavior can be restored by enabling the 7844EnableInterpreterSlack flag. 7845 7846Enhanced the optional "implicit return" support to allow an implicit 7847return 7848value from methods that are invoked externally via the AcpiEvaluateObject 7849interface. This enables implicit returns from the _STA and _INI methods, 7850for example. 7851 7852Changed the Revision() ASL/AML operator to return the current version of 7853the 7854AML interpreter, in the YYYYMMDD format. Previously, it incorrectly 7855returned 7856the supported ACPI version (This is the function of the _REV method). 7857 7858Updated the _REV predefined method to return the currently supported 7859version 7860of ACPI, now 3. 7861 7862Implemented batch mode option for the AcpiExec utility (-b). 7863 7864Code and Data Size: Current and previous core subsystem library sizes are 7865shown below. These are the code and data sizes for the acpica.lib produced 7866by the Microsoft Visual C++ 6.0 compiler, and these values do not include 7867any ACPI driver or OSPM code. The debug version of the code includes the 7868debug output trace mechanism and has a much larger code and data size. 7869Note 7870that these values will vary depending on the efficiency of the compiler 7871and 7872the compiler options used during generation. 7873 7874 Previous Release: 7875 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 7876 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 7877 Current Release: 7878 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 7879 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 7880 7881---------------------------------------- 788210 December 2004. Summary of changes for version 20041210: 7883 7884ACPI 3.0 support is nearing completion in both the iASL compiler and the 7885ACPI CA core subsystem. 7886 78871) ACPI CA Core Subsystem: 7888 7889Fixed a problem in the ToDecimalString operator where the resulting string 7890length was incorrectly calculated. The length is now calculated exactly, 7891eliminating incorrect AE_STRING_LIMIT exceptions. 7892 7893Fixed a problem in the ToHexString operator to allow a maximum 200 7894character 7895string to be produced. 7896 7897Fixed a problem in the internal string-to-buffer and buffer-to-buffer copy 7898routine where the length of the resulting buffer was not truncated to the 7899new size (if the target buffer already existed). 7900 7901Code and Data Size: Current and previous core subsystem library sizes are 7902shown below. These are the code and data sizes for the acpica.lib produced 7903by the Microsoft Visual C++ 6.0 compiler, and these values do not include 7904any ACPI driver or OSPM code. The debug version of the code includes the 7905debug output trace mechanism and has a much larger code and data size. 7906Note 7907that these values will vary depending on the efficiency of the compiler 7908and 7909the compiler options used during generation. 7910 7911 Previous Release: 7912 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 7913 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 7914 Current Release: 7915 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 7916 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 7917 7918 79192) iASL Compiler/Disassembler: 7920 7921Implemented the new ACPI 3.0 resource template macros - DWordSpace, 7922ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace. 7923Includes support in the disassembler. 7924 7925Implemented support for the new (ACPI 3.0) parameter to the Register 7926macro, 7927AccessSize. 7928 7929Fixed a problem where the _HE resource name for the Interrupt macro was 7930referencing bit 0 instead of bit 1. 7931 7932Implemented check for maximum 255 interrupts in the Interrupt macro. 7933 7934Fixed a problem with the predefined resource descriptor names where 7935incorrect AML code was generated if the offset within the resource buffer 7936was 0 or 1. The optimizer shortened the AML code to a single byte opcode 7937but did not update the surrounding package lengths. 7938 7939Changes to the Dma macro: All channels within the channel list must be in 7940the range 0-7. Maximum 8 channels can be specified. BusMaster operand is 7941optional (default is BusMaster). 7942 7943Implemented check for maximum 7 data bytes for the VendorShort macro. 7944 7945The ReadWrite parameter is now optional for the Memory32 and similar 7946macros. 7947 7948---------------------------------------- 794903 December 2004. Summary of changes for version 20041203: 7950 79511) ACPI CA Core Subsystem: 7952 7953The low-level field insertion/extraction code (exfldio) has been 7954completely 7955rewritten to eliminate unnecessary complexity, bugs, and boundary 7956conditions. 7957 7958Fixed a problem in the ToInteger, ToBuffer, ToHexString, and 7959ToDecimalString 7960operators where the input operand could be inadvertently deleted if no 7961conversion was necessary (e.g., if the input to ToInteger was an Integer 7962object.) 7963 7964Fixed a problem with the ToDecimalString and ToHexString where an 7965incorrect 7966exception code was returned if the resulting string would be > 200 chars. 7967AE_STRING_LIMIT is now returned. 7968 7969Fixed a problem with the Concatenate operator where AE_OK was always 7970returned, even if the operation failed. 7971 7972Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128 7973semaphores to be allocated. 7974 7975Code and Data Size: Current and previous core subsystem library sizes are 7976shown below. These are the code and data sizes for the acpica.lib produced 7977by the Microsoft Visual C++ 6.0 compiler, and these values do not include 7978any ACPI driver or OSPM code. The debug version of the code includes the 7979debug output trace mechanism and has a much larger code and data size. 7980Note 7981that these values will vary depending on the efficiency of the compiler 7982and 7983the compiler options used during generation. 7984 7985 Previous Release: 7986 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 7987 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 7988 Current Release: 7989 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 7990 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 7991 7992 79932) iASL Compiler/Disassembler: 7994 7995Fixed typechecking for the ObjectType and SizeOf operators. Problem was 7996recently introduced in 20041119. 7997 7998Fixed a problem with the ToUUID macro where the upper nybble of each 7999buffer 8000byte was inadvertently set to zero. 8001 8002---------------------------------------- 800319 November 2004. Summary of changes for version 20041119: 8004 80051) ACPI CA Core Subsystem: 8006 8007Fixed a problem in the internal ConvertToInteger routine where new 8008integers 8009were not truncated to 32 bits for 32-bit ACPI tables. This routine 8010converts 8011buffers and strings to integers. 8012 8013Implemented support to store a value to an Index() on a String object. 8014This 8015is an ACPI 2.0 feature that had not yet been implemented. 8016 8017Implemented new behavior for storing objects to individual package 8018elements 8019(via the Index() operator). The previous behavior was to invoke the 8020implicit 8021conversion rules if an object was already present at the index. The new 8022behavior is to simply delete any existing object and directly store the 8023new 8024object. Although the ACPI specification seems unclear on this subject, 8025other 8026ACPI implementations behave in this manner. (This is the root of the 8027AE_BAD_HEX_CONSTANT issue.) 8028 8029Modified the RSDP memory scan mechanism to support the extended checksum 8030for 8031ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid 8032RSDP signature is found with a valid checksum. 8033 8034Code and Data Size: Current and previous core subsystem library sizes are 8035shown below. These are the code and data sizes for the acpica.lib produced 8036by the Microsoft Visual C++ 6.0 compiler, and these values do not include 8037any ACPI driver or OSPM code. The debug version of the code includes the 8038debug output trace mechanism and has a much larger code and data size. 8039Note 8040that these values will vary depending on the efficiency of the compiler 8041and 8042the compiler options used during generation. 8043 8044 Previous Release: 8045 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 8046 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 8047 Current Release: 8048 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 8049 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 8050 8051 80522) iASL Compiler/Disassembler: 8053 8054Fixed a missing semicolon in the aslcompiler.y file. 8055 8056---------------------------------------- 805705 November 2004. Summary of changes for version 20041105: 8058 80591) ACPI CA Core Subsystem: 8060 8061Implemented support for FADT revision 2. This was an interim table 8062(between 8063ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register. 8064 8065Implemented optional support to allow uninitialized LocalX and ArgX 8066variables in a control method. The variables are initialized to an 8067Integer 8068object with a value of zero. This support is enabled by setting the 8069AcpiGbl_EnableInterpreterSlack flag to TRUE. 8070 8071Implemented support for Integer objects for the SizeOf operator. Either 4 8072or 8 is returned, depending on the current integer size (32-bit or 64-bit, 8073depending on the parent table revision). 8074 8075Fixed a problem in the implementation of the SizeOf and ObjectType 8076operators 8077where the operand was resolved to a value too early, causing incorrect 8078return values for some objects. 8079 8080Fixed some possible memory leaks during exceptional conditions. 8081 8082Code and Data Size: Current and previous core subsystem library sizes are 8083shown below. These are the code and data sizes for the acpica.lib produced 8084by the Microsoft Visual C++ 6.0 compiler, and these values do not include 8085any ACPI driver or OSPM code. The debug version of the code includes the 8086debug output trace mechanism and has a much larger code and data size. 8087Note 8088that these values will vary depending on the efficiency of the compiler 8089and 8090the compiler options used during generation. 8091 8092 Previous Release: 8093 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 8094 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 8095 Current Release: 8096 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 8097 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 8098 8099 81002) iASL Compiler/Disassembler: 8101 8102Implemented support for all ACPI 3.0 reserved names and methods. 8103 8104Implemented all ACPI 3.0 grammar elements in the front-end, including 8105support for semicolons. 8106 8107Implemented the ACPI 3.0 Function() and ToUUID() macros 8108 8109Fixed a problem in the disassembler where a Scope() operator would not be 8110emitted properly if the target of the scope was in another table. 8111 8112---------------------------------------- 811315 October 2004. Summary of changes for version 20041015: 8114 8115Note: ACPI CA is currently undergoing an in-depth and complete formal 8116evaluation to test/verify the following areas. Other suggestions are 8117welcome. This will result in an increase in the frequency of releases and 8118the number of bug fixes in the next few months. 8119 - Functional tests for all ASL/AML operators 8120 - All implicit/explicit type conversions 8121 - Bit fields and operation regions 8122 - 64-bit math support and 32-bit-only "truncated" math support 8123 - Exceptional conditions, both compiler and interpreter 8124 - Dynamic object deletion and memory leaks 8125 - ACPI 3.0 support when implemented 8126 - External interfaces to the ACPI subsystem 8127 8128 81291) ACPI CA Core Subsystem: 8130 8131Fixed two alignment issues on 64-bit platforms - within debug statements 8132in 8133AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the 8134Address 8135field within the non-aligned ACPI generic address structure. 8136 8137Fixed a problem in the Increment and Decrement operators where incorrect 8138operand resolution could result in the inadvertent modification of the 8139original integer when the integer is passed into another method as an 8140argument and the arg is then incremented/decremented. 8141 8142Fixed a problem in the FromBCD operator where the upper 32-bits of a 64- 8143bit 8144BCD number were truncated during conversion. 8145 8146Fixed a problem in the ToDecimal operator where the length of the 8147resulting 8148string could be set incorrectly too long if the input operand was a Buffer 8149object. 8150 8151Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte 8152(0) 8153within a buffer would prematurely terminate a compare between buffer 8154objects. 8155 8156Added a check for string overflow (>200 characters as per the ACPI 8157specification) during the Concatenate operator with two string operands. 8158 8159Code and Data Size: Current and previous core subsystem library sizes are 8160shown below. These are the code and data sizes for the acpica.lib produced 8161by the Microsoft Visual C++ 6.0 compiler, and these values do not include 8162any ACPI driver or OSPM code. The debug version of the code includes the 8163debug output trace mechanism and has a much larger code and data size. 8164Note 8165that these values will vary depending on the efficiency of the compiler 8166and 8167the compiler options used during generation. 8168 8169 Previous Release: 8170 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 8171 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 8172 Current Release: 8173 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 8174 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 8175 8176 8177 81782) iASL Compiler/Disassembler: 8179 8180Allow the use of the ObjectType operator on uninitialized Locals and Args 8181(returns 0 as per the ACPI specification). 8182 8183Fixed a problem where the compiler would fault if there was a syntax error 8184in the FieldName of all of the various CreateXXXField operators. 8185 8186Disallow the use of lower case letters within the EISAID macro, as per the 8187ACPI specification. All EISAID strings must be of the form "UUUNNNN" 8188Where 8189U is an uppercase letter and N is a hex digit. 8190 8191 8192---------------------------------------- 819306 October 2004. Summary of changes for version 20041006: 8194 81951) ACPI CA Core Subsystem: 8196 8197Implemented support for the ACPI 3.0 Timer operator. This ASL function 8198implements a 64-bit timer with 100 nanosecond granularity. 8199 8200Defined a new OSL interface, AcpiOsGetTimer. This interface is used to 8201implement the ACPI 3.0 Timer operator. This allows the host OS to 8202implement 8203the timer with the best clock available. Also, it keeps the core subsystem 8204out of the clock handling business, since the host OS (usually) performs 8205this function. 8206 8207Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write) 8208functions use a 64-bit address which is part of the packed ACPI Generic 8209Address Structure. Since the structure is non-aligned, the alignment 8210macros 8211are now used to extract the address to a local variable before use. 8212 8213Fixed a problem where the ToInteger operator assumed all input strings 8214were 8215hexadecimal. The operator now handles both decimal strings and hex strings 8216(prefixed with "0x"). 8217 8218Fixed a problem where the string length in the string object created as a 8219result of the internal ConvertToString procedure could be incorrect. This 8220potentially affected all implicit conversions and also the ToDecimalString 8221and ToHexString operators. 8222 8223Fixed two problems in the ToString operator. If the length parameter was 8224zero, an incorrect string object was created and the value of the input 8225length parameter was inadvertently changed from zero to Ones. 8226 8227Fixed a problem where the optional ResourceSource string in the 8228ExtendedIRQ 8229resource macro was ignored. 8230 8231Simplified the interfaces to the internal division functions, reducing 8232code 8233size and complexity. 8234 8235Code and Data Size: Current and previous core subsystem library sizes are 8236shown below. These are the code and data sizes for the acpica.lib produced 8237by the Microsoft Visual C++ 6.0 compiler, and these values do not include 8238any ACPI driver or OSPM code. The debug version of the code includes the 8239debug output trace mechanism and has a much larger code and data size. 8240Note 8241that these values will vary depending on the efficiency of the compiler 8242and 8243the compiler options used during generation. 8244 8245 Previous Release: 8246 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 8247 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 8248 Current Release: 8249 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 8250 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 8251 8252 82532) iASL Compiler/Disassembler: 8254 8255Implemented support for the ACPI 3.0 Timer operator. 8256 8257Fixed a problem where the Default() operator was inadvertently ignored in 8258a 8259Switch/Case block. This was a problem in the translation of the Switch 8260statement to If...Else pairs. 8261 8262Added support to allow a standalone Return operator, with no parentheses 8263(or 8264operands). 8265 8266Fixed a problem with code generation for the ElseIf operator where the 8267translated Else...If parse tree was improperly constructed leading to the 8268loss of some code. 8269 8270---------------------------------------- 827122 September 2004. Summary of changes for version 20040922: 8272 82731) ACPI CA Core Subsystem: 8274 8275Fixed a problem with the implementation of the LNot() operator where 8276"Ones" 8277was not returned for the TRUE case. Changed the code to return Ones 8278instead 8279of (!Arg) which was usually 1. This change affects iASL constant folding 8280for 8281this operator also. 8282 8283Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was not 8284initialized properly -- Now zero the entire buffer in this case where the 8285buffer already exists. 8286 8287Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32 8288Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all 8289related code considerably. This will require changes/updates to all OS 8290interface layers (OSLs.) 8291 8292Implemented a new external interface, AcpiInstallExceptionHandler, to 8293allow 8294a system exception handler to be installed. This handler is invoked upon 8295any 8296run-time exception that occurs during control method execution. 8297 8298Added support for the DSDT in AcpiTbFindTable. This allows the 8299DataTableRegion() operator to access the local copy of the DSDT. 8300 8301Code and Data Size: Current and previous core subsystem library sizes are 8302shown below. These are the code and data sizes for the acpica.lib produced 8303by the Microsoft Visual C++ 6.0 compiler, and these values do not include 8304any ACPI driver or OSPM code. The debug version of the code includes the 8305debug output trace mechanism and has a much larger code and data size. 8306Note 8307that these values will vary depending on the efficiency of the compiler 8308and 8309the compiler options used during generation. 8310 8311 Previous Release: 8312 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 8313 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 8314 Current Release: 8315 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 8316 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 8317 8318 83192) iASL Compiler/Disassembler: 8320 8321Fixed a problem with constant folding and the LNot operator. LNot was 8322returning 1 in the TRUE case, not Ones as per the ACPI specification. This 8323could result in the generation of an incorrect folded/reduced constant. 8324 8325End-Of-File is now allowed within a "//"-style comment. A parse error no 8326longer occurs if such a comment is at the very end of the input ASL source 8327file. 8328 8329Implemented the "-r" option to override the Revision in the table header. 8330The initial use of this option will be to simplify the evaluation of the 8331AML 8332interpreter by allowing a single ASL source module to be compiled for 8333either 833432-bit or 64-bit integers. 8335 8336 8337---------------------------------------- 833827 August 2004. Summary of changes for version 20040827: 8339 83401) ACPI CA Core Subsystem: 8341 8342- Implemented support for implicit object conversion in the non-numeric 8343logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual, and 8344LNotEqual.) Any combination of Integers/Strings/Buffers may now be used; 8345the second operand is implicitly converted on the fly to match the type of 8346the first operand. For example: 8347 8348 LEqual (Source1, Source2) 8349 8350Source1 and Source2 must each evaluate to an integer, a string, or a 8351buffer. 8352The data type of Source1 dictates the required type of Source2. Source2 is 8353implicitly converted if necessary to match the type of Source1. 8354 8355- Updated and corrected the behavior of the string conversion support. 8356The 8357rules concerning conversion of buffers to strings (according to the ACPI 8358specification) are as follows: 8359 8360ToDecimalString - explicit byte-wise conversion of buffer to string of 8361decimal values (0-255) separated by commas. ToHexString - explicit byte- 8362wise 8363conversion of buffer to string of hex values (0-FF) separated by commas. 8364ToString - explicit byte-wise conversion of buffer to string. Byte-by- 8365byte 8366copy with no transform except NULL terminated. Any other implicit buffer- 8367to- 8368string conversion - byte-wise conversion of buffer to string of hex values 8369(0-FF) separated by spaces. 8370 8371- Fixed typo in definition of AcpiGbl_EnableInterpreterSlack. 8372 8373- Fixed a problem in AcpiNsGetPathnameLength where the returned length was 8374one byte too short in the case of a node in the root scope. This could 8375cause a fault during debug output. 8376 8377- Code and Data Size: Current and previous core subsystem library sizes 8378are 8379shown below. These are the code and data sizes for the acpica.lib 8380produced 8381by the Microsoft Visual C++ 6.0 compiler, and these values do not include 8382any ACPI driver or OSPM code. The debug version of the code includes the 8383debug output trace mechanism and has a much larger code and data size. 8384Note 8385that these values will vary depending on the efficiency of the compiler 8386and 8387the compiler options used during generation. 8388 8389 Previous Release: 8390 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 8391 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 8392 Current Release: 8393 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 8394 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 8395 8396 83972) iASL Compiler/Disassembler: 8398 8399- Fixed a Linux generation error. 8400 8401 8402---------------------------------------- 840316 August 2004. Summary of changes for version 20040816: 8404 84051) ACPI CA Core Subsystem: 8406 8407Designed and implemented support within the AML interpreter for the so- 8408called "implicit return". This support returns the result of the last ASL 8409operation within a control method, in the absence of an explicit Return() 8410operator. A few machines depend on this behavior, even though it is not 8411explicitly supported by the ASL language. It is optional support that can 8412be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag. 8413 8414Removed support for the PCI_Config address space from the internal low 8415level 8416hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This 8417support was not used internally, and would not work correctly anyway 8418because 8419the PCI bus number and segment number were not supported. There are 8420separate interfaces for PCI configuration space access because of the 8421unique 8422interface. 8423 8424Code and Data Size: Current and previous core subsystem library sizes are 8425shown below. These are the code and data sizes for the acpica.lib 8426produced 8427by the Microsoft Visual C++ 6.0 compiler, and these values do not include 8428any ACPI driver or OSPM code. The debug version of the code includes the 8429debug output trace mechanism and has a much larger code and data size. 8430Note 8431that these values will vary depending on the efficiency of the compiler 8432and 8433the compiler options used during generation. 8434 8435 Previous Release: 8436 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 8437 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 8438 Current Release: 8439 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 8440 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 8441 8442 84432) iASL Compiler/Disassembler: 8444 8445Fixed a problem where constants in ASL expressions at the root level (not 8446within a control method) could be inadvertently truncated during code 8447generation. This problem was introduced in the 20040715 release. 8448 8449 8450---------------------------------------- 845115 July 2004. Summary of changes for version 20040715: 8452 84531) ACPI CA Core Subsystem: 8454 8455Restructured the internal HW GPE interfaces to pass/track the current 8456state 8457of interrupts (enabled/disabled) in order to avoid possible deadlock and 8458increase flexibility of the interfaces. 8459 8460Implemented a "lexicographical compare" for String and Buffer objects 8461within 8462the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual -- 8463as per further clarification to the ACPI specification. Behavior is 8464similar 8465to C library "strcmp". 8466 8467Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable 8468external function. In the 32-bit non-debug case, the stack use has been 8469reduced from 168 bytes to 32 bytes. 8470 8471Deployed a new run-time configuration flag, 8472AcpiGbl_EnableInterpreterSlack, 8473whose purpose is to allow the AML interpreter to forgive certain bad AML 8474constructs. Default setting is FALSE. 8475 8476Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field 8477IO 8478support code. If enabled, it allows field access to go beyond the end of 8479a 8480region definition if the field is within the region length rounded up to 8481the 8482next access width boundary (a common coding error.) 8483 8484Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to 8485ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also, 8486these 8487symbols are lowercased by the latest version of the AcpiSrc tool. 8488 8489The prototypes for the PCI interfaces in acpiosxf.h have been updated to 8490rename "Register" to simply "Reg" to prevent certain compilers from 8491complaining. 8492 8493Code and Data Size: Current and previous core subsystem library sizes are 8494shown below. These are the code and data sizes for the acpica.lib 8495produced 8496by the Microsoft Visual C++ 6.0 compiler, and these values do not include 8497any ACPI driver or OSPM code. The debug version of the code includes the 8498debug output trace mechanism and has a much larger code and data size. 8499Note 8500that these values will vary depending on the efficiency of the compiler 8501and 8502the compiler options used during generation. 8503 8504 Previous Release: 8505 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 8506 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 8507 Current Release: 8508 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 8509 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 8510 8511 85122) iASL Compiler/Disassembler: 8513 8514Implemented full support for Package objects within the Case() operator. 8515Note: The Break() operator is currently not supported within Case blocks 8516(TermLists) as there is some question about backward compatibility with 8517ACPI 85181.0 interpreters. 8519 8520 8521Fixed a problem where complex terms were not supported properly within the 8522Switch() operator. 8523 8524Eliminated extraneous warning for compiler-emitted reserved names of the 8525form "_T_x". (Used in Switch/Case operators.) 8526 8527Eliminated optimization messages for "_T_x" objects and small constants 8528within the DefinitionBlock operator. 8529 8530 8531---------------------------------------- 853215 June 2004. Summary of changes for version 20040615: 8533 85341) ACPI CA Core Subsystem: 8535 8536Implemented support for Buffer and String objects (as per ACPI 2.0) for 8537the 8538following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 8539LLessEqual. 8540 8541All directory names in the entire source package are lower case, as they 8542were in earlier releases. 8543 8544Implemented "Disassemble" command in the AML debugger that will 8545disassemble 8546a single control method. 8547 8548Code and Data Size: Current and previous core subsystem library sizes are 8549shown below. These are the code and data sizes for the acpica.lib 8550produced 8551by the Microsoft Visual C++ 6.0 compiler, and these values do not include 8552any ACPI driver or OSPM code. The debug version of the code includes the 8553debug output trace mechanism and has a much larger code and data size. 8554Note 8555that these values will vary depending on the efficiency of the compiler 8556and 8557the compiler options used during generation. 8558 8559 Previous Release: 8560 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 8561 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 8562 8563 Current Release: 8564 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 8565 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 8566 8567 85682) iASL Compiler/Disassembler: 8569 8570Implemented support for Buffer and String objects (as per ACPI 2.0) for 8571the 8572following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 8573LLessEqual. 8574 8575All directory names in the entire source package are lower case, as they 8576were in earlier releases. 8577 8578Fixed a fault when using the -g or -d<nofilename> options if the FADT was 8579not found. 8580 8581Fixed an issue with the Windows version of the compiler where later 8582versions 8583of Windows place the FADT in the registry under the name "FADT" and not 8584"FACP" as earlier versions did. This applies when using the -g or - 8585d<nofilename> options. The compiler now looks for both strings as 8586necessary. 8587 8588Fixed a problem with compiler namepath optimization where a namepath 8589within 8590the Scope() operator could not be optimized if the namepath was a subpath 8591of 8592the current scope path. 8593 8594---------------------------------------- 859527 May 2004. Summary of changes for version 20040527: 8596 85971) ACPI CA Core Subsystem: 8598 8599Completed a new design and implementation for EBDA (Extended BIOS Data 8600Area) 8601support in the RSDP scan code. The original code improperly scanned for 8602the 8603EBDA by simply scanning from memory location 0 to 0x400. The correct 8604method 8605is to first obtain the EBDA pointer from within the BIOS data area, then 8606scan 1K of memory starting at the EBDA pointer. There appear to be few if 8607any machines that place the RSDP in the EBDA, however. 8608 8609Integrated a fix for a possible fault during evaluation of BufferField 8610arguments. Obsolete code that was causing the problem was removed. 8611 8612Found and fixed a problem in the Field Support Code where data could be 8613corrupted on a bit field read that starts on an aligned boundary but does 8614not end on an aligned boundary. Merged the read/write "datum length" 8615calculation code into a common procedure. 8616 8617Rolled in a couple of changes to the FreeBSD-specific header. 8618 8619 8620Code and Data Size: Current and previous core subsystem library sizes are 8621shown below. These are the code and data sizes for the acpica.lib 8622produced 8623by the Microsoft Visual C++ 6.0 compiler, and these values do not include 8624any ACPI driver or OSPM code. The debug version of the code includes the 8625debug output trace mechanism and has a much larger code and data size. 8626Note 8627that these values will vary depending on the efficiency of the compiler 8628and 8629the compiler options used during generation. 8630 8631 Previous Release: 8632 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 8633 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 8634 Current Release: 8635 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 8636 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 8637 8638 86392) iASL Compiler/Disassembler: 8640 8641Fixed a generation warning produced by some overly-verbose compilers for a 864264-bit constant. 8643 8644---------------------------------------- 864514 May 2004. Summary of changes for version 20040514: 8646 86471) ACPI CA Core Subsystem: 8648 8649Fixed a problem where hardware GPE enable bits sometimes not set properly 8650during and after GPE method execution. Result of 04/27 changes. 8651 8652Removed extra "clear all GPEs" when sleeping/waking. 8653 8654Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single 8655AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above 8656to 8657the new AcpiEv* calls as appropriate. 8658 8659ACPI_OS_NAME was removed from the OS-specific headers. The default name 8660is 8661now "Microsoft Windows NT" for maximum compatibility. However this can be 8662changed by modifying the acconfig.h file. 8663 8664Allow a single invocation of AcpiInstallNotifyHandler for a handler that 8665traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag. 8666 8667Run _INI methods on ThermalZone objects. This is against the ACPI 8668specification, but there is apparently ASL code in the field that has 8669these 8670_INI methods, and apparently "other" AML interpreters execute them. 8671 8672Performed a full 16/32/64 bit lint that resulted in some small changes. 8673 8674Added a sleep simulation command to the AML debugger to test sleep code. 8675 8676Code and Data Size: Current and previous core subsystem library sizes are 8677shown below. These are the code and data sizes for the acpica.lib 8678produced 8679by the Microsoft Visual C++ 6.0 compiler, and these values do not include 8680any ACPI driver or OSPM code. The debug version of the code includes the 8681debug output trace mechanism and has a much larger code and data size. 8682Note 8683that these values will vary depending on the efficiency of the compiler 8684and 8685the compiler options used during generation. 8686 8687 Previous Release: 8688 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 8689 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 8690 Current Release: 8691 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 8692 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 8693 8694---------------------------------------- 869527 April 2004. Summary of changes for version 20040427: 8696 86971) ACPI CA Core Subsystem: 8698 8699Completed a major overhaul of the GPE handling within ACPI CA. There are 8700now three types of GPEs: wake-only, runtime-only, and combination 8701wake/run. 8702The only GPEs allowed to be combination wake/run are for button-style 8703devices such as a control-method power button, control-method sleep 8704button, 8705or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are 8706not 8707referenced by any _PRW methods are marked for "runtime" and hardware 8708enabled. Any GPE that is referenced by a _PRW method is marked for "wake" 8709(and disabled at runtime). However, at sleep time, only those GPEs that 8710have been specifically enabled for wake via the AcpiEnableGpe interface 8711will 8712actually be hardware enabled. 8713 8714A new external interface has been added, AcpiSetGpeType(), that is meant 8715to 8716be used by device drivers to force a GPE to a particular type. It will be 8717especially useful for the drivers for the button devices mentioned above. 8718 8719Completed restructuring of the ACPI CA initialization sequence so that 8720default operation region handlers are installed before GPEs are 8721initialized 8722and the _PRW methods are executed. This will prevent errors when the _PRW 8723methods attempt to access system memory or I/O space. 8724 8725GPE enable/disable no longer reads the GPE enable register. We now keep 8726the 8727enable info for runtime and wake separate and in the GPE_EVENT_INFO. We 8728thus no longer depend on the hardware to maintain these bits. 8729 8730Always clear the wake status and fixed/GPE status bits before sleep, even 8731for state S5. 8732 8733Improved the AML debugger output for displaying the GPE blocks and their 8734current status. 8735 8736Added new strings for the _OSI method, of the form "Windows 2001 SPx" 8737where 8738x = 0,1,2,3,4. 8739 8740Fixed a problem where the physical address was incorrectly calculated when 8741the Load() operator was used to directly load from an Operation Region 8742(vs. 8743loading from a Field object.) Also added check for minimum table length 8744for 8745this case. 8746 8747Fix for multiple mutex acquisition. Restore original thread SyncLevel on 8748mutex release. 8749 8750Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for 8751consistency with the other fields returned. 8752 8753Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such 8754structure for each GPE in the system, so the size of this structure is 8755important. 8756 8757CPU stack requirement reduction: Cleaned up the method execution and 8758object 8759evaluation paths so that now a parameter structure is passed, instead of 8760copying the various method parameters over and over again. 8761 8762In evregion.c: Correctly exit and reenter the interpreter region if and 8763only if dispatching an operation region request to a user-installed 8764handler. 8765Do not exit/reenter when dispatching to a default handler (e.g., default 8766system memory or I/O handlers) 8767 8768 8769Notes for updating drivers for the new GPE support. The following changes 8770must be made to ACPI-related device drivers that are attached to one or 8771more 8772GPEs: (This information will be added to the ACPI CA Programmer 8773Reference.) 8774 87751) AcpiInstallGpeHandler no longer automatically enables the GPE, you must 8776explicitly call AcpiEnableGpe. 87772) There is a new interface called AcpiSetGpeType. This should be called 8778before enabling the GPE. Also, this interface will automatically disable 8779the GPE if it is currently enabled. 87803) AcpiEnableGpe no longer supports a GPE type flag. 8781 8782Specific drivers that must be changed: 87831) EC driver: 8784 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED, 8785AeGpeHandler, NULL); 8786 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME); 8787 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR); 8788 87892) Button Drivers (Power, Lid, Sleep): 8790Run _PRW method under parent device 8791If _PRW exists: /* This is a control-method button */ 8792 Extract GPE number and possibly GpeDevice 8793 AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN); 8794 AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR); 8795 8796For all other devices that have _PRWs, we automatically set the GPE type 8797to 8798ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled. This 8799must be done on a selective basis, usually requiring some kind of user app 8800to allow the user to pick the wake devices. 8801 8802 8803Code and Data Size: Current and previous core subsystem library sizes are 8804shown below. These are the code and data sizes for the acpica.lib 8805produced 8806by the Microsoft Visual C++ 6.0 compiler, and these values do not include 8807any ACPI driver or OSPM code. The debug version of the code includes the 8808debug output trace mechanism and has a much larger code and data size. 8809Note 8810that these values will vary depending on the efficiency of the compiler 8811and 8812the compiler options used during generation. 8813 8814 Previous Release: 8815 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 8816 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 8817 Current Release: 8818 8819 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 8820 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 8821 8822 8823 8824---------------------------------------- 882502 April 2004. Summary of changes for version 20040402: 8826 88271) ACPI CA Core Subsystem: 8828 8829Fixed an interpreter problem where an indirect store through an ArgX 8830parameter was incorrectly applying the "implicit conversion rules" during 8831the store. From the ACPI specification: "If the target is a method local 8832or 8833argument (LocalX or ArgX), no conversion is performed and the result is 8834stored directly to the target". The new behavior is to disable implicit 8835conversion during ALL stores to an ArgX. 8836 8837Changed the behavior of the _PRW method scan to ignore any and all errors 8838returned by a given _PRW. This prevents the scan from aborting from the 8839failure of any single _PRW. 8840 8841Moved the runtime configuration parameters from the global init procedure 8842to 8843static variables in acglobal.h. This will allow the host to override the 8844default values easily. 8845 8846Code and Data Size: Current and previous core subsystem library sizes are 8847shown below. These are the code and data sizes for the acpica.lib 8848produced 8849by the Microsoft Visual C++ 6.0 compiler, and these values do not include 8850any ACPI driver or OSPM code. The debug version of the code includes the 8851debug output trace mechanism and has a much larger code and data size. 8852Note 8853that these values will vary depending on the efficiency of the compiler 8854and 8855the compiler options used during generation. 8856 8857 Previous Release: 8858 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 8859 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 8860 Current Release: 8861 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 8862 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 8863 8864 88652) iASL Compiler/Disassembler: 8866 8867iASL now fully disassembles SSDTs. However, External() statements are not 8868generated automatically for unresolved symbols at this time. This is a 8869planned feature for future implementation. 8870 8871Fixed a scoping problem in the disassembler that occurs when the type of 8872the 8873target of a Scope() operator is overridden. This problem caused an 8874incorrectly nested internal namespace to be constructed. 8875 8876Any warnings or errors that are emitted during disassembly are now 8877commented 8878out automatically so that the resulting file can be recompiled without any 8879hand editing. 8880 8881---------------------------------------- 888226 March 2004. Summary of changes for version 20040326: 8883 88841) ACPI CA Core Subsystem: 8885 8886Implemented support for "wake" GPEs via interaction between GPEs and the 8887_PRW methods. Every GPE that is pointed to by one or more _PRWs is 8888identified as a WAKE GPE and by default will no longer be enabled at 8889runtime. Previously, we were blindly enabling all GPEs with a 8890corresponding 8891_Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway. 8892We 8893believe this has been the cause of thousands of "spurious" GPEs on some 8894systems. 8895 8896This new GPE behavior is can be reverted to the original behavior (enable 8897ALL GPEs at runtime) via a runtime flag. 8898 8899Fixed a problem where aliased control methods could not access objects 8900properly. The proper scope within the namespace was not initialized 8901(transferred to the target of the aliased method) before executing the 8902target method. 8903 8904Fixed a potential race condition on internal object deletion on the return 8905object in AcpiEvaluateObject. 8906 8907Integrated a fix for resource descriptors where both _MEM and _MTP were 8908being extracted instead of just _MEM. (i.e. bitmask was incorrectly too 8909wide, 0x0F instead of 0x03.) 8910 8911Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName, preventing 8912a 8913fault in some cases. 8914 8915Updated Notify() values for debug statements in evmisc.c 8916 8917Return proper status from AcpiUtMutexInitialize, not just simply AE_OK. 8918 8919Code and Data Size: Current and previous core subsystem library sizes are 8920shown below. These are the code and data sizes for the acpica.lib 8921produced 8922by the Microsoft Visual C++ 6.0 compiler, and these values do not include 8923any ACPI driver or OSPM code. The debug version of the code includes the 8924debug output trace mechanism and has a much larger code and data size. 8925Note 8926that these values will vary depending on the efficiency of the compiler 8927and 8928the compiler options used during generation. 8929 8930 Previous Release: 8931 8932 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 8933 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 8934 Current Release: 8935 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 8936 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 8937 8938---------------------------------------- 893911 March 2004. Summary of changes for version 20040311: 8940 89411) ACPI CA Core Subsystem: 8942 8943Fixed a problem where errors occurring during the parse phase of control 8944method execution did not abort cleanly. For example, objects created and 8945installed in the namespace were not deleted. This caused all subsequent 8946invocations of the method to return the AE_ALREADY_EXISTS exception. 8947 8948Implemented a mechanism to force a control method to "Serialized" 8949execution 8950if the method attempts to create namespace objects. (The root of the 8951AE_ALREADY_EXISTS problem.) 8952 8953Implemented support for the predefined _OSI "internal" control method. 8954Initial supported strings are "Linux", "Windows 2000", "Windows 2001", and 8955"Windows 2001.1", and can be easily upgraded for new strings as necessary. 8956This feature will allow "other" operating systems to execute the fully 8957tested, "Windows" code path through the ASL code 8958 8959Global Lock Support: Now allows multiple acquires and releases with any 8960internal thread. Removed concept of "owning thread" for this special 8961mutex. 8962 8963Fixed two functions that were inappropriately declaring large objects on 8964the 8965CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage 8966during 8967method execution considerably. 8968 8969Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the 8970S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT. 8971 8972Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs 8973defined on the machine. 8974 8975Implemented two runtime options: One to force all control method 8976execution 8977to "Serialized" to mimic Windows behavior, another to disable _OSI support 8978if it causes problems on a given machine. 8979 8980Code and Data Size: Current and previous core subsystem library sizes are 8981shown below. These are the code and data sizes for the acpica.lib 8982produced 8983by the Microsoft Visual C++ 6.0 compiler, and these values do not include 8984any ACPI driver or OSPM code. The debug version of the code includes the 8985debug output trace mechanism and has a much larger code and data size. 8986Note 8987that these values will vary depending on the efficiency of the compiler 8988and 8989the compiler options used during generation. 8990 8991 Previous Release: 8992 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 8993 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 8994 Current Release: 8995 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 8996 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 8997 89982) iASL Compiler/Disassembler: 8999 9000Fixed an array size problem for FreeBSD that would cause the compiler to 9001fault. 9002 9003---------------------------------------- 900420 February 2004. Summary of changes for version 20040220: 9005 9006 90071) ACPI CA Core Subsystem: 9008 9009Implemented execution of _SxD methods for Device objects in the 9010GetObjectInfo interface. 9011 9012Fixed calls to _SST method to pass the correct arguments. 9013 9014Added a call to _SST on wake to restore to "working" state. 9015 9016Check for End-Of-Buffer failure case in the WalkResources interface. 9017 9018Integrated fix for 64-bit alignment issue in acglobal.h by moving two 9019structures to the beginning of the file. 9020 9021After wake, clear GPE status register(s) before enabling GPEs. 9022 9023After wake, clear/enable power button. (Perhaps we should clear/enable 9024all 9025fixed events upon wake.) 9026 9027Fixed a couple of possible memory leaks in the Namespace manager. 9028 9029Integrated latest acnetbsd.h file. 9030 9031---------------------------------------- 903211 February 2004. Summary of changes for version 20040211: 9033 9034 90351) ACPI CA Core Subsystem: 9036 9037Completed investigation and implementation of the call-by-reference 9038mechanism for control method arguments. 9039 9040Fixed a problem where a store of an object into an indexed package could 9041fail if the store occurs within a different method than the method that 9042created the package. 9043 9044Fixed a problem where the ToDecimal operator could return incorrect 9045results. 9046 9047Fixed a problem where the CopyObject operator could fail on some of the 9048more 9049obscure objects (e.g., Reference objects.) 9050 9051Improved the output of the Debug object to display buffer, package, and 9052index objects. 9053 9054Fixed a problem where constructs of the form "RefOf (ArgX)" did not return 9055the expected result. 9056 9057Added permanent ACPI_REPORT_ERROR macros for all instances of the 9058ACPI_AML_INTERNAL exception. 9059 9060Integrated latest version of acfreebsd.h 9061 9062---------------------------------------- 906316 January 2004. Summary of changes for version 20040116: 9064 9065The purpose of this release is primarily to update the copyright years in 9066each module, thus causing a huge number of diffs. There are a few small 9067functional changes, however. 9068 90691) ACPI CA Core Subsystem: 9070 9071Improved error messages when there is a problem finding one or more of the 9072required base ACPI tables 9073 9074Reintroduced the definition of APIC_HEADER in actbl.h 9075 9076Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h) 9077 9078Removed extraneous reference to NewObj in dsmthdat.c 9079 90802) iASL compiler 9081 9082Fixed a problem introduced in December that disabled the correct 9083disassembly 9084of Resource Templates 9085 9086 9087---------------------------------------- 908803 December 2003. Summary of changes for version 20031203: 9089 90901) ACPI CA Core Subsystem: 9091 9092Changed the initialization of Operation Regions during subsystem 9093init to perform two entire walks of the ACPI namespace; The first 9094to initialize the regions themselves, the second to execute the 9095_REG methods. This fixed some interdependencies across _REG 9096methods found on some machines. 9097 9098Fixed a problem where a Store(Local0, Local1) could simply update 9099the object reference count, and not create a new copy of the 9100object if the Local1 is uninitialized. 9101 9102Implemented support for the _SST reserved method during sleep 9103transitions. 9104 9105Implemented support to clear the SLP_TYP and SLP_EN bits when 9106waking up, this is apparently required by some machines. 9107 9108When sleeping, clear the wake status only if SleepState is not S5. 9109 9110Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect 9111pointer arithmetic advanced a string pointer too far. 9112 9113Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer 9114could be returned if the requested table has not been loaded. 9115 9116Within the support for IRQ resources, restructured the handling of 9117the active and edge/level bits. 9118 9119Fixed a few problems in AcpiPsxExecute() where memory could be 9120leaked under certain error conditions. 9121 9122Improved error messages for the cases where the ACPI mode could 9123not be entered. 9124 9125Code and Data Size: Current and previous core subsystem library 9126sizes are shown below. These are the code and data sizes for the 9127acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 9128these values do not include any ACPI driver or OSPM code. The 9129debug version of the code includes the debug output trace 9130mechanism and has a much larger code and data size. Note that 9131these values will vary depending on the efficiency of the compiler 9132and the compiler options used during generation. 9133 9134 Previous Release (20031029): 9135 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 9136 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 9137 Current Release: 9138 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 9139 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 9140 91412) iASL Compiler/Disassembler: 9142 9143Implemented a fix for the iASL disassembler where a bad index was 9144generated. This was most noticeable on 64-bit platforms 9145 9146 9147---------------------------------------- 914829 October 2003. Summary of changes for version 20031029: 9149 91501) ACPI CA Core Subsystem: 9151 9152 9153Fixed a problem where a level-triggered GPE with an associated 9154_Lxx control method was incorrectly cleared twice. 9155 9156Fixed a problem with the Field support code where an access can 9157occur beyond the end-of-region if the field is non-aligned but 9158extends to the very end of the parent region (resulted in an 9159AE_AML_REGION_LIMIT exception.) 9160 9161Fixed a problem with ACPI Fixed Events where an RT Clock handler 9162would not get invoked on an RTC event. The RTC event bitmasks for 9163the PM1 registers were not being initialized properly. 9164 9165Implemented support for executing _STA and _INI methods for 9166Processor objects. Although this is currently not part of the 9167ACPI specification, there is existing ASL code that depends on the 9168init-time execution of these methods. 9169 9170Implemented and deployed a GetDescriptorName function to decode 9171the various types of internal descriptors. Guards against null 9172descriptors during debug output also. 9173 9174Implemented and deployed a GetNodeName function to extract the 4- 9175character namespace node name. This function simplifies the debug 9176and error output, as well as guarding against null pointers during 9177output. 9178 9179Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to 9180simplify the debug and error output of 64-bit integers. This 9181macro replaces the HIDWORD and LODWORD macros for dumping these 9182integers. 9183 9184Updated the implementation of the Stall() operator to only call 9185AcpiOsStall(), and also return an error if the operand is larger 9186than 255. This preserves the required behavior of not 9187relinquishing the processor, as would happen if AcpiOsSleep() was 9188called for "long stalls". 9189 9190Constructs of the form "Store(LocalX,LocalX)" where LocalX is not 9191initialized are now treated as NOOPs. 9192 9193Cleaned up a handful of warnings during 64-bit generation. 9194 9195Fixed a reported error where and incorrect GPE number was passed 9196to the GPE dispatch handler. This value is only used for error 9197output, however. Used this opportunity to clean up and streamline 9198the GPE dispatch code. 9199 9200Code and Data Size: Current and previous core subsystem library 9201sizes are shown below. These are the code and data sizes for the 9202acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 9203these values do not include any ACPI driver or OSPM code. The 9204 9205debug version of the code includes the debug output trace 9206mechanism and has a much larger code and data size. Note that 9207these values will vary depending on the efficiency of the compiler 9208and the compiler options used during generation. 9209 9210 Previous Release (20031002): 9211 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 9212 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 9213 Current Release: 9214 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 9215 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 9216 9217 92182) iASL Compiler/Disassembler: 9219 9220Updated the iASL compiler to return an error if the operand to the 9221Stall() operator is larger than 255. 9222 9223 9224---------------------------------------- 922502 October 2003. Summary of changes for version 20031002: 9226 9227 92281) ACPI CA Core Subsystem: 9229 9230Fixed a problem with Index Fields where the index was not 9231incremented for fields that require multiple writes to the 9232index/data registers (Fields that are wider than the data 9233register.) 9234 9235Fixed a problem with all Field objects where a write could go 9236beyond the end-of-field if the field was larger than the access 9237granularity and therefore required multiple writes to complete the 9238request. An extra write beyond the end of the field could happen 9239inadvertently. 9240 9241Fixed a problem with Index Fields where a BUFFER_OVERFLOW error 9242would incorrectly be returned if the width of the Data Register 9243was larger than the specified field access width. 9244 9245Completed fixes for LoadTable() and Unload() and verified their 9246operation. Implemented full support for the "DdbHandle" object 9247throughout the ACPI CA subsystem. 9248 9249Implemented full support for the MADT and ECDT tables in the ACPI 9250CA header files. Even though these tables are not directly 9251consumed by ACPI CA, the header definitions are useful for ACPI 9252device drivers. 9253 9254Integrated resource descriptor fixes posted to the Linux ACPI 9255list. This included checks for minimum descriptor length, and 9256support for trailing NULL strings within descriptors that have 9257optional string elements. 9258 9259Code and Data Size: Current and previous core subsystem library 9260sizes are shown below. These are the code and data sizes for the 9261acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 9262these values do not include any ACPI driver or OSPM code. The 9263debug version of the code includes the debug output trace 9264mechanism and has a much larger code and data size. Note that 9265these values will vary depending on the efficiency of the compiler 9266and the compiler options used during generation. 9267 9268 Previous Release (20030918): 9269 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 9270 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 9271 Current Release: 9272 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 9273 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 9274 9275 92762) iASL Compiler: 9277 9278Implemented detection of non-ASCII characters within the input 9279source ASL file. This catches attempts to compile binary (AML) 9280files early in the compile, with an informative error message. 9281 9282Fixed a problem where the disassembler would fault if the output 9283filename could not be generated or if the output file could not be 9284opened. 9285 9286---------------------------------------- 928718 September 2003. Summary of changes for version 20030918: 9288 9289 92901) ACPI CA Core Subsystem: 9291 9292Found and fixed a longstanding problem with the late execution of 9293the various deferred AML opcodes (such as Operation Regions, 9294Buffer Fields, Buffers, and Packages). If the name string 9295specified for the name of the new object placed the object in a 9296scope other than the current scope, the initialization/execution 9297of the opcode failed. The solution to this problem was to 9298implement a mechanism where the late execution of such opcodes 9299does not attempt to lookup/create the name a second time in an 9300incorrect scope. This fixes the "region size computed 9301incorrectly" problem. 9302 9303Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a 9304Global Lock AE_BAD_PARAMETER error. 9305 9306Fixed several 64-bit issues with prototypes, casting and data 9307types. 9308 9309Removed duplicate prototype from acdisasm.h 9310 9311Fixed an issue involving EC Operation Region Detach (Shaohua Li) 9312 9313Code and Data Size: Current and previous core subsystem library 9314sizes are shown below. These are the code and data sizes for the 9315acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 9316these values do not include any ACPI driver or OSPM code. The 9317debug version of the code includes the debug output trace 9318mechanism and has a much larger code and data size. Note that 9319these values will vary depending on the efficiency of the compiler 9320and the compiler options used during generation. 9321 9322 Previous Release: 9323 9324 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 9325 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 9326 Current Release: 9327 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 9328 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 9329 9330 93312) Linux: 9332 9333Fixed the AcpiOsSleep implementation in osunixxf.c to pass the 9334correct sleep time in seconds. 9335 9336---------------------------------------- 933714 July 2003. Summary of changes for version 20030619: 9338 93391) ACPI CA Core Subsystem: 9340 9341Parse SSDTs in order discovered, as opposed to reverse order 9342(Hrvoje Habjanic) 9343 9344Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas 9345Klausner, 9346 Nate Lawson) 9347 9348 93492) Linux: 9350 9351Dynamically allocate SDT list (suggested by Andi Kleen) 9352 9353proc function return value cleanups (Andi Kleen) 9354 9355Correctly handle NMI watchdog during long stalls (Andrew Morton) 9356 9357Make it so acpismp=force works (reported by Andrew Morton) 9358 9359 9360---------------------------------------- 936119 June 2003. Summary of changes for version 20030619: 9362 93631) ACPI CA Core Subsystem: 9364 9365Fix To/FromBCD, eliminating the need for an arch-specific #define. 9366 9367Do not acquire a semaphore in the S5 shutdown path. 9368 9369Fix ex_digits_needed for 0. (Takayoshi Kochi) 9370 9371Fix sleep/stall code reversal. (Andi Kleen) 9372 9373Revert a change having to do with control method calling 9374semantics. 9375 93762) Linux: 9377 9378acpiphp update (Takayoshi Kochi) 9379 9380Export acpi_disabled for sonypi (Stelian Pop) 9381 9382Mention acpismp=force in config help 9383 9384Re-add acpitable.c and acpismp=force. This improves backwards 9385 9386compatibility and also cleans up the code to a significant degree. 9387 9388Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge) 9389 9390---------------------------------------- 939122 May 2003. Summary of changes for version 20030522: 9392 93931) ACPI CA Core Subsystem: 9394 9395Found and fixed a reported problem where an AE_NOT_FOUND error 9396occurred occasionally during _BST evaluation. This turned out to 9397be an Owner ID allocation issue where a called method did not get 9398a new ID assigned to it. Eventually, (after 64k calls), the Owner 9399ID UINT16 would wraparound so that the ID would be the same as the 9400caller's and the called method would delete the caller's 9401namespace. 9402 9403Implemented extended error reporting for control methods that are 9404aborted due to a run-time exception. Output includes the exact 9405AML instruction that caused the method abort, a dump of the method 9406locals and arguments at the time of the abort, and a trace of all 9407nested control method calls. 9408 9409Modified the interpreter to allow the creation of buffers of zero 9410length from the AML code. Implemented new code to ensure that no 9411attempt is made to actually allocate a memory buffer (of length 9412zero) - instead, a simple buffer object with a NULL buffer pointer 9413and length zero is created. A warning is no longer issued when 9414the AML attempts to create a zero-length buffer. 9415 9416Implemented a workaround for the "leading asterisk issue" in 9417_HIDs, _UIDs, and _CIDs in the AML interpreter. One leading 9418asterisk is automatically removed if present in any HID, UID, or 9419CID strings. The iASL compiler will still flag this asterisk as 9420an error, however. 9421 9422Implemented full support for _CID methods that return a package of 9423multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface 9424now additionally returns a device _CID list if present. This 9425required a change to the external interface in order to pass an 9426ACPI_BUFFER object as a parameter since the _CID list is of 9427variable length. 9428 9429Fixed a problem with the new AE_SAME_HANDLER exception where 9430handler initialization code did not know about this exception. 9431 9432Code and Data Size: Current and previous core subsystem library 9433sizes are shown below. These are the code and data sizes for the 9434acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 9435these values do not include any ACPI driver or OSPM code. The 9436debug version of the code includes the debug output trace 9437mechanism and has a much larger code and data size. Note that 9438these values will vary depending on the efficiency of the compiler 9439and the compiler options used during generation. 9440 9441 Previous Release (20030509): 9442 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 9443 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 9444 Current Release: 9445 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 9446 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 9447 9448 94492) Linux: 9450 9451Fixed a bug in which we would reinitialize the ACPI interrupt 9452after it was already working, thus disabling all ACPI and the IRQs 9453for any other device sharing the interrupt. (Thanks to Stian 9454Jordet) 9455 9456Toshiba driver update (John Belmonte) 9457 9458Return only 0 or 1 for our interrupt handler status (Andrew 9459Morton) 9460 9461 94623) iASL Compiler: 9463 9464Fixed a reported problem where multiple (nested) ElseIf() 9465statements were not handled correctly by the compiler, resulting 9466in incorrect warnings and incorrect AML code. This was a problem 9467in both the ASL parser and the code generator. 9468 9469 94704) Documentation: 9471 9472Added changes to existing interfaces, new exception codes, and new 9473text concerning reference count object management versus garbage 9474collection. 9475 9476---------------------------------------- 947709 May 2003. Summary of changes for version 20030509. 9478 9479 94801) ACPI CA Core Subsystem: 9481 9482Changed the subsystem initialization sequence to hold off 9483installation of address space handlers until the hardware has been 9484initialized and the system has entered ACPI mode. This is because 9485the installation of space handlers can cause _REG methods to be 9486run. Previously, the _REG methods could potentially be run before 9487ACPI mode was enabled. 9488 9489Fixed some memory leak issues related to address space handler and 9490notify handler installation. There were some problems with the 9491reference count mechanism caused by the fact that the handler 9492objects are shared across several namespace objects. 9493 9494Fixed a reported problem where reference counts within the 9495namespace were not properly updated when named objects created by 9496method execution were deleted. 9497 9498Fixed a reported problem where multiple SSDTs caused a deletion 9499issue during subsystem termination. Restructured the table data 9500structures to simplify the linked lists and the related code. 9501 9502Fixed a problem where the table ID associated with secondary 9503tables (SSDTs) was not being propagated into the namespace objects 9504created by those tables. This would only present a problem for 9505tables that are unloaded at run-time, however. 9506 9507Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE 9508type as the length parameter (instead of UINT32). 9509 9510Solved a long-standing problem where an ALREADY_EXISTS error 9511appears on various systems. This problem could happen when there 9512are multiple PCI_Config operation regions under a single PCI root 9513bus. This doesn't happen very frequently, but there are some 9514systems that do this in the ASL. 9515 9516Fixed a reported problem where the internal DeleteNode function 9517was incorrectly handling the case where a namespace node was the 9518first in the parent's child list, and had additional peers (not 9519the only child, but first in the list of children.) 9520 9521Code and Data Size: Current core subsystem library sizes are shown 9522below. These are the code and data sizes for the acpica.lib 9523produced by the Microsoft Visual C++ 6.0 compiler, and these 9524values do not include any ACPI driver or OSPM code. The debug 9525version of the code includes the debug output trace mechanism and 9526has a much larger code and data size. Note that these values will 9527vary depending on the efficiency of the compiler and the compiler 9528options used during generation. 9529 9530 Previous Release 9531 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 9532 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 9533 Current Release: 9534 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 9535 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 9536 9537 95382) Linux: 9539 9540Allow ":" in OS override string (Ducrot Bruno) 9541 9542Kobject fix (Greg KH) 9543 9544 95453 iASL Compiler/Disassembler: 9546 9547Fixed a problem in the generation of the C source code files (AML 9548is emitted in C source statements for BIOS inclusion) where the 9549Ascii dump that appears within a C comment at the end of each line 9550could cause a compile time error if the AML sequence happens to 9551have an open comment or close comment sequence embedded. 9552 9553 9554---------------------------------------- 955524 April 2003. Summary of changes for version 20030424. 9556 9557 95581) ACPI CA Core Subsystem: 9559 9560Support for big-endian systems has been implemented. Most of the 9561support has been invisibly added behind big-endian versions of the 9562ACPI_MOVE_* macros. 9563 9564Fixed a problem in AcpiHwDisableGpeBlock() and 9565AcpiHwClearGpeBlock() where an incorrect offset was passed to the 9566low level hardware write routine. The offset parameter was 9567actually eliminated from the low level read/write routines because 9568they had become obsolete. 9569 9570Fixed a problem where a handler object was deleted twice during 9571the removal of a fixed event handler. 9572 9573 95742) Linux: 9575 9576A fix for SMP systems with link devices was contributed by 9577 9578Compaq's Dan Zink. 9579 9580(2.5) Return whether we handled the interrupt in our IRQ handler. 9581(Linux ISRs no longer return void, so we can propagate the handler 9582return value from the ACPI CA core back to the OS.) 9583 9584 9585 95863) Documentation: 9587 9588The ACPI CA Programmer Reference has been updated to reflect new 9589interfaces and changes to existing interfaces. 9590 9591---------------------------------------- 959228 March 2003. Summary of changes for version 20030328. 9593 95941) ACPI CA Core Subsystem: 9595 9596The GPE Block Device support has been completed. New interfaces 9597are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event 9598interfaces (enable, disable, clear, getstatus) have been split 9599into separate interfaces for Fixed Events and General Purpose 9600Events (GPEs) in order to support GPE Block Devices properly. 9601 9602Fixed a problem where the error message "Failed to acquire 9603semaphore" would appear during operations on the embedded 9604controller (EC). 9605 9606Code and Data Size: Current core subsystem library sizes are shown 9607below. These are the code and data sizes for the acpica.lib 9608produced by the Microsoft Visual C++ 6.0 compiler, and these 9609values do not include any ACPI driver or OSPM code. The debug 9610version of the code includes the debug output trace mechanism and 9611has a much larger code and data size. Note that these values will 9612vary depending on the efficiency of the compiler and the compiler 9613options used during generation. 9614 9615 Previous Release 9616 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 9617 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 9618 Current Release: 9619 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 9620 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 9621 9622 9623---------------------------------------- 962428 February 2003. Summary of changes for version 20030228. 9625 9626 96271) ACPI CA Core Subsystem: 9628 9629The GPE handling and dispatch code has been completely overhauled 9630in preparation for support of GPE Block Devices (ID ACPI0006). 9631This affects internal data structures and code only; there should 9632be no differences visible externally. One new file has been 9633added, evgpeblk.c 9634 9635The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only 9636fields that are used to determine the GPE block lengths. The 9637REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address 9638structures are ignored. This is per the ACPI specification but it 9639isn't very clear. The full 256 Block 0/1 GPEs are now supported 9640(the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128). 9641 9642In the SCI interrupt handler, removed the read of the PM1_CONTROL 9643register to look at the SCI_EN bit. On some machines, this read 9644causes an SMI event and greatly slows down SCI events. (This may 9645in fact be the cause of slow battery status response on some 9646systems.) 9647 9648Fixed a problem where a store of a NULL string to a package object 9649could cause the premature deletion of the object. This was seen 9650during execution of the battery _BIF method on some systems, 9651resulting in no battery data being returned. 9652 9653Added AcpiWalkResources interface to simplify parsing of resource 9654lists. 9655 9656Code and Data Size: Current core subsystem library sizes are shown 9657below. These are the code and data sizes for the acpica.lib 9658produced by the Microsoft Visual C++ 6.0 compiler, and these 9659values do not include any ACPI driver or OSPM code. The debug 9660version of the code includes the debug output trace mechanism and 9661has a much larger code and data size. Note that these values will 9662vary depending on the efficiency of the compiler and the compiler 9663options used during generation. 9664 9665 Previous Release 9666 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 9667 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 9668 Current Release: 9669 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 9670 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 9671 9672 96732) Linux 9674 9675S3 fixes (Ole Rohne) 9676 9677Update ACPI PHP driver with to use new acpi_walk_resource API 9678(Bjorn Helgaas) 9679 9680Add S4BIOS support (Pavel Machek) 9681 9682Map in entire table before performing checksum (John Stultz) 9683 9684Expand the mem= cmdline to allow the specification of reserved and 9685ACPI DATA blocks (Pavel Machek) 9686 9687Never use ACPI on VISWS 9688 9689Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez) 9690 9691Revert a change that allowed P_BLK lengths to be 4 or 5. This is 9692causing us to think that some systems support C2 when they really 9693don't. 9694 9695Do not count processor objects for non-present CPUs (Thanks to 9696Dominik Brodowski) 9697 9698 96993) iASL Compiler: 9700 9701Fixed a problem where ASL include files could not be found and 9702opened. 9703 9704Added support for the _PDC reserved name. 9705 9706 9707---------------------------------------- 970822 January 2003. Summary of changes for version 20030122. 9709 9710 97111) ACPI CA Core Subsystem: 9712 9713Added a check for constructs of the form: Store (Local0, Local0) 9714where Local0 is not initialized. Apparently, some BIOS 9715programmers believe that this is a NOOP. Since this store doesn't 9716do anything anyway, the new prototype behavior will ignore this 9717error. This is a case where we can relax the strict checking in 9718the interpreter in the name of compatibility. 9719 9720 97212) Linux 9722 9723The AcpiSrc Source Conversion Utility has been released with the 9724Linux package for the first time. This is the utility that is 9725used to convert the ACPI CA base source code to the Linux version. 9726 9727(Both) Handle P_BLK lengths shorter than 6 more gracefully 9728 9729(Both) Move more headers to include/acpi, and delete an unused 9730header. 9731 9732(Both) Move drivers/acpi/include directory to include/acpi 9733 9734(Both) Boot functions don't use cmdline, so don't pass it around 9735 9736(Both) Remove include of unused header (Adrian Bunk) 9737 9738(Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since 9739the 9740former now also includes the latter, acpiphp.h only needs the one, 9741now. 9742 9743(2.5) Make it possible to select method of bios restoring after S3 9744resume. [=> no more ugly ifdefs] (Pavel Machek) 9745 9746(2.5) Make proc write interfaces work (Pavel Machek) 9747 9748(2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski) 9749 9750(2.5) Break out ACPI Perf code into its own module, under cpufreq 9751(Dominik Brodowski) 9752 9753(2.4) S4BIOS support (Ducrot Bruno) 9754 9755(2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio 9756Visinoni) 9757 9758 97593) iASL Compiler: 9760 9761Added support to disassemble SSDT and PSDTs. 9762 9763Implemented support to obtain SSDTs from the Windows registry if 9764available. 9765 9766 9767---------------------------------------- 976809 January 2003. Summary of changes for version 20030109. 9769 97701) ACPI CA Core Subsystem: 9771 9772Changed the behavior of the internal Buffer-to-String conversion 9773function. The current ACPI specification states that the contents 9774of the buffer are "converted to a string of two-character 9775hexadecimal numbers, each separated by a space". Unfortunately, 9776this definition is not backwards compatible with existing ACPI 1.0 9777implementations (although the behavior was not defined in the ACPI 97781.0 specification). The new behavior simply copies data from the 9779buffer to the string until a null character is found or the end of 9780the buffer is reached. The new String object is always null 9781terminated. This problem was seen during the generation of _BIF 9782battery data where incorrect strings were returned for battery 9783type, etc. This will also require an errata to the ACPI 9784specification. 9785 9786Renamed all instances of NATIVE_UINT and NATIVE_INT to 9787ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively. 9788 9789Copyright in all module headers (both Linux and non-Linux) has be 9790updated to 2003. 9791 9792Code and Data Size: Current core subsystem library sizes are shown 9793below. These are the code and data sizes for the acpica.lib 9794produced by the Microsoft Visual C++ 6.0 compiler, and these 9795values do not include any ACPI driver or OSPM code. The debug 9796version of the code includes the debug output trace mechanism and 9797has a much larger code and data size. Note that these values will 9798vary depending on the efficiency of the compiler and the compiler 9799options used during generation. 9800 9801 Previous Release 9802 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 9803 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 9804 Current Release: 9805 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 9806 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 9807 9808 98092) Linux 9810 9811Fixed an oops on module insertion/removal (Matthew Tippett) 9812 9813(2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante) 9814 9815(2.5) Replace pr_debug (Randy Dunlap) 9816 9817(2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski) 9818 9819(Both) Eliminate spawning of thread from timer callback, in favor 9820of schedule_work() 9821 9822(Both) Show Lid status in /proc (Zdenek OGAR Skalak) 9823 9824(Both) Added define for Fixed Function HW region (Matthew Wilcox) 9825 9826(Both) Add missing statics to button.c (Pavel Machek) 9827 9828Several changes have been made to the source code translation 9829utility that generates the Linux Code in order to make the code 9830more "Linux-like": 9831 9832All typedefs on structs and unions have been removed in keeping 9833with the Linux coding style. 9834 9835Removed the non-Linux SourceSafe module revision number from each 9836module header. 9837 9838Completed major overhaul of symbols to be lowercased for linux. 9839Doubled the number of symbols that are lowercased. 9840 9841Fixed a problem where identifiers within procedure headers and 9842within quotes were not fully lower cased (they were left with a 9843starting capital.) 9844 9845Some C macros whose only purpose is to allow the generation of 16- 9846bit code are now completely removed in the Linux code, increasing 9847readability and maintainability. 9848 9849---------------------------------------- 9850 985112 December 2002. Summary of changes for version 20021212. 9852 9853 98541) ACPI CA Core Subsystem: 9855 9856Fixed a problem where the creation of a zero-length AML Buffer 9857would cause a fault. 9858 9859Fixed a problem where a Buffer object that pointed to a static AML 9860buffer (in an ACPI table) could inadvertently be deleted, causing 9861memory corruption. 9862 9863Fixed a problem where a user buffer (passed in to the external 9864ACPI CA interfaces) could be overwritten if the buffer was too 9865small to complete the operation, causing memory corruption. 9866 9867Fixed a problem in the Buffer-to-String conversion code where a 9868string of length one was always returned, regardless of the size 9869of the input Buffer object. 9870 9871Removed the NATIVE_CHAR data type across the entire source due to 9872lack of need and lack of consistent use. 9873 9874Code and Data Size: Current core subsystem library sizes are shown 9875below. These are the code and data sizes for the acpica.lib 9876produced by the Microsoft Visual C++ 6.0 compiler, and these 9877values do not include any ACPI driver or OSPM code. The debug 9878version of the code includes the debug output trace mechanism and 9879has a much larger code and data size. Note that these values will 9880vary depending on the efficiency of the compiler and the compiler 9881options used during generation. 9882 9883 Previous Release 9884 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 9885 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 9886 Current Release: 9887 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 9888 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 9889 9890 9891---------------------------------------- 989205 December 2002. Summary of changes for version 20021205. 9893 98941) ACPI CA Core Subsystem: 9895 9896Fixed a problem where a store to a String or Buffer object could 9897cause corruption of the DSDT if the object type being stored was 9898the same as the target object type and the length of the object 9899being stored was equal to or smaller than the original (existing) 9900target object. This was seen to cause corruption of battery _BIF 9901buffers if the _BIF method modified the buffer on the fly. 9902 9903Fixed a problem where an internal error was generated if a control 9904method invocation was used in an OperationRegion, Buffer, or 9905Package declaration. This was caused by the deferred parsing of 9906the control method and thus the deferred creation of the internal 9907method object. The solution to this problem was to create the 9908internal method object at the moment the method is encountered in 9909the first pass - so that subsequent references to the method will 9910able to obtain the required parameter count and thus properly 9911parse the method invocation. This problem presented itself as an 9912AE_AML_INTERNAL during the pass 1 parse phase during table load. 9913 9914Fixed a problem where the internal String object copy routine did 9915not always allocate sufficient memory for the target String object 9916and caused memory corruption. This problem was seen to cause 9917"Allocation already present in list!" errors as memory allocation 9918became corrupted. 9919 9920Implemented a new function for the evaluation of namespace objects 9921that allows the specification of the allowable return object 9922types. This simplifies a lot of code that checks for a return 9923object of one or more specific objects returned from the 9924evaluation (such as _STA, etc.) This may become and external 9925function if it would be useful to ACPI-related drivers. 9926 9927Completed another round of prefixing #defines with "ACPI_" for 9928clarity. 9929 9930Completed additional code restructuring to allow more modular 9931linking for iASL compiler and AcpiExec. Several files were split 9932creating new files. New files: nsparse.c dsinit.c evgpe.c 9933 9934Implemented an abort mechanism to terminate an executing control 9935method via the AML debugger. This feature is useful for debugging 9936control methods that depend (wait) for specific hardware 9937responses. 9938 9939Code and Data Size: Current core subsystem library sizes are shown 9940below. These are the code and data sizes for the acpica.lib 9941produced by the Microsoft Visual C++ 6.0 compiler, and these 9942values do not include any ACPI driver or OSPM code. The debug 9943version of the code includes the debug output trace mechanism and 9944has a much larger code and data size. Note that these values will 9945vary depending on the efficiency of the compiler and the compiler 9946options used during generation. 9947 9948 Previous Release 9949 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 9950 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 9951 Current Release: 9952 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 9953 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 9954 9955 99562) iASL Compiler/Disassembler 9957 9958Fixed a compiler code generation problem for "Interrupt" Resource 9959Descriptors. If specified in the ASL, the optional "Resource 9960Source Index" and "Resource Source" fields were not inserted into 9961the correct location within the AML resource descriptor, creating 9962an invalid descriptor. 9963 9964Fixed a disassembler problem for "Interrupt" resource descriptors. 9965The optional "Resource Source Index" and "Resource Source" fields 9966were ignored. 9967 9968 9969---------------------------------------- 997022 November 2002. Summary of changes for version 20021122. 9971 9972 99731) ACPI CA Core Subsystem: 9974 9975Fixed a reported problem where an object stored to a Method Local 9976or Arg was not copied to a new object during the store - the 9977object pointer was simply copied to the Local/Arg. This caused 9978all subsequent operations on the Local/Arg to also affect the 9979original source of the store operation. 9980 9981Fixed a problem where a store operation to a Method Local or Arg 9982was not completed properly if the Local/Arg contained a reference 9983(from RefOf) to a named field. The general-purpose store-to- 9984namespace-node code is now used so that this case is handled 9985automatically. 9986 9987Fixed a problem where the internal object copy routine would cause 9988a protection fault if the object being copied was a Package and 9989contained either 1) a NULL package element or 2) a nested sub- 9990package. 9991 9992Fixed a problem with the GPE initialization that resulted from an 9993ambiguity in the ACPI specification. One section of the 9994specification states that both the address and length of the GPE 9995block must be zero if the block is not supported. Another section 9996implies that only the address need be zero if the block is not 9997supported. The code has been changed so that both the address and 9998the length must be non-zero to indicate a valid GPE block (i.e., 9999if either the address or the length is zero, the GPE block is 10000invalid.) 10001 10002Code and Data Size: Current core subsystem library sizes are shown 10003below. These are the code and data sizes for the acpica.lib 10004produced by the Microsoft Visual C++ 6.0 compiler, and these 10005values do not include any ACPI driver or OSPM code. The debug 10006version of the code includes the debug output trace mechanism and 10007has a much larger code and data size. Note that these values will 10008vary depending on the efficiency of the compiler and the compiler 10009options used during generation. 10010 10011 Previous Release 10012 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 10013 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 10014 Current Release: 10015 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 10016 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 10017 10018 100192) Linux 10020 10021Cleaned up EC driver. Exported an external EC read/write 10022interface. By going through this, other drivers (most notably 10023sonypi) will be able to serialize access to the EC. 10024 10025 100263) iASL Compiler/Disassembler 10027 10028Implemented support to optionally generate include files for both 10029ASM and C (the -i switch). This simplifies BIOS development by 10030automatically creating include files that contain external 10031declarations for the symbols that are created within the 10032 10033(optionally generated) ASM and C AML source files. 10034 10035 10036---------------------------------------- 1003715 November 2002. Summary of changes for version 20021115. 10038 100391) ACPI CA Core Subsystem: 10040 10041Fixed a memory leak problem where an error during resolution of 10042 10043method arguments during a method invocation from another method 10044failed to cleanup properly by deleting all successfully resolved 10045argument objects. 10046 10047Fixed a problem where the target of the Index() operator was not 10048correctly constructed if the source object was a package. This 10049problem has not been detected because the use of a target operand 10050with Index() is very rare. 10051 10052Fixed a problem with the Index() operator where an attempt was 10053made to delete the operand objects twice. 10054 10055Fixed a problem where an attempt was made to delete an operand 10056twice during execution of the CondRefOf() operator if the target 10057did not exist. 10058 10059Implemented the first of perhaps several internal create object 10060functions that create and initialize a specific object type. This 10061consolidates duplicated code wherever the object is created, thus 10062shrinking the size of the subsystem. 10063 10064Implemented improved debug/error messages for errors that occur 10065during nested method invocations. All executing method pathnames 10066are displayed (with the error) as the call stack is unwound - thus 10067simplifying debug. 10068 10069Fixed a problem introduced in the 10/02 release that caused 10070premature deletion of a buffer object if a buffer was used as an 10071ASL operand where an integer operand is required (Thus causing an 10072implicit object conversion from Buffer to Integer.) The change in 10073the 10/02 release was attempting to fix a memory leak (albeit 10074incorrectly.) 10075 10076Code and Data Size: Current core subsystem library sizes are shown 10077below. These are the code and data sizes for the acpica.lib 10078produced by the Microsoft Visual C++ 6.0 compiler, and these 10079values do not include any ACPI driver or OSPM code. The debug 10080version of the code includes the debug output trace mechanism and 10081has a much larger code and data size. Note that these values will 10082vary depending on the efficiency of the compiler and the compiler 10083options used during generation. 10084 10085 Previous Release 10086 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 10087 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 10088 Current Release: 10089 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 10090 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 10091 10092 100932) Linux 10094 10095Changed the implementation of the ACPI semaphores to use down() 10096instead of down_interruptable(). It is important that the 10097execution of ACPI control methods not be interrupted by signals. 10098Methods must run to completion, or the system may be left in an 10099unknown/unstable state. 10100 10101Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set. 10102(Shawn Starr) 10103 10104 101053) iASL Compiler/Disassembler 10106 10107 10108Changed the default location of output files. All output files 10109are now placed in the current directory by default instead of in 10110the directory of the source file. This change may affect some 10111existing makefiles, but it brings the behavior of the compiler in 10112line with other similar tools. The location of the output files 10113can be overridden with the -p command line switch. 10114 10115 10116---------------------------------------- 1011711 November 2002. Summary of changes for version 20021111. 10118 10119 101200) ACPI Specification 2.0B is released and is now available at: 10121http://www.acpi.info/index.html 10122 10123 101241) ACPI CA Core Subsystem: 10125 10126Implemented support for the ACPI 2.0 SMBus Operation Regions. 10127This includes the early detection and handoff of the request to 10128the SMBus region handler (avoiding all of the complex field 10129support code), and support for the bidirectional return packet 10130from an SMBus write operation. This paves the way for the 10131development of SMBus drivers in each host operating system. 10132 10133Fixed a problem where the semaphore WAIT_FOREVER constant was 10134defined as 32 bits, but must be 16 bits according to the ACPI 10135specification. This had the side effect of causing ASL 10136Mutex/Event timeouts even though the ASL code requested a wait 10137forever. Changed all internal references to the ACPI timeout 10138parameter to 16 bits to prevent future problems. Changed the name 10139of WAIT_FOREVER to ACPI_WAIT_FOREVER. 10140 10141Code and Data Size: Current core subsystem library sizes are shown 10142below. These are the code and data sizes for the acpica.lib 10143produced by the Microsoft Visual C++ 6.0 compiler, and these 10144values do not include any ACPI driver or OSPM code. The debug 10145version of the code includes the debug output trace mechanism and 10146has a much larger code and data size. Note that these values will 10147vary depending on the efficiency of the compiler and the compiler 10148options used during generation. 10149 10150 Previous Release 10151 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 10152 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 10153 Current Release: 10154 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 10155 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 10156 10157 101582) Linux 10159 10160Module loading/unloading fixes (John Cagle) 10161 10162 101633) iASL Compiler/Disassembler 10164 10165Added support for the SMBBlockProcessCall keyword (ACPI 2.0) 10166 10167Implemented support for the disassembly of all SMBus protocol 10168keywords (SMBQuick, SMBWord, etc.) 10169 10170---------------------------------------- 1017101 November 2002. Summary of changes for version 20021101. 10172 10173 101741) ACPI CA Core Subsystem: 10175 10176Fixed a problem where platforms that have a GPE1 block but no GPE0 10177block were not handled correctly. This resulted in a "GPE 10178overlap" error message. GPE0 is no longer required. 10179 10180Removed code added in the previous release that inserted nodes 10181into the namespace in alphabetical order. This caused some side- 10182effects on various machines. The root cause of the problem is 10183still under investigation since in theory, the internal ordering 10184of the namespace nodes should not matter. 10185 10186 10187Enhanced error reporting for the case where a named object is not 10188found during control method execution. The full ACPI namepath 10189(name reference) of the object that was not found is displayed in 10190this case. 10191 10192Note: as a result of the overhaul of the namespace object types in 10193the previous release, the namespace nodes for the predefined 10194scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE 10195instead of ACPI_TYPE_ANY. This simplifies the namespace 10196management code but may affect code that walks the namespace tree 10197looking for specific object types. 10198 10199Code and Data Size: Current core subsystem library sizes are shown 10200below. These are the code and data sizes for the acpica.lib 10201produced by the Microsoft Visual C++ 6.0 compiler, and these 10202values do not include any ACPI driver or OSPM code. The debug 10203version of the code includes the debug output trace mechanism and 10204has a much larger code and data size. Note that these values will 10205vary depending on the efficiency of the compiler and the compiler 10206options used during generation. 10207 10208 Previous Release 10209 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 10210 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 10211 Current Release: 10212 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 10213 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 10214 10215 102162) Linux 10217 10218Fixed a problem introduced in the previous release where the 10219Processor and Thermal objects were not recognized and installed in 10220/proc. This was related to the scope type change described above. 10221 10222 102233) iASL Compiler/Disassembler 10224 10225Implemented the -g option to get all of the required ACPI tables 10226from the registry and save them to files (Windows version of the 10227compiler only.) The required tables are the FADT, FACS, and DSDT. 10228 10229Added ACPI table checksum validation during table disassembly in 10230order to catch corrupted tables. 10231 10232 10233---------------------------------------- 1023422 October 2002. Summary of changes for version 20021022. 10235 102361) ACPI CA Core Subsystem: 10237 10238Implemented a restriction on the Scope operator that the target 10239must already exist in the namespace at the time the operator is 10240encountered (during table load or method execution). In other 10241words, forward references are not allowed and Scope() cannot 10242create a new object. This changes the previous behavior where the 10243interpreter would create the name if not found. This new behavior 10244correctly enables the search-to-root algorithm during namespace 10245lookup of the target name. Because of this upsearch, this fixes 10246the known Compaq _SB_.OKEC problem and makes both the AML 10247interpreter and iASL compiler compatible with other ACPI 10248implementations. 10249 10250Completed a major overhaul of the internal ACPI object types for 10251the ACPI Namespace and the associated operand objects. Many of 10252these types had become obsolete with the introduction of the two- 10253pass namespace load. This cleanup simplifies the code and makes 10254the entire namespace load mechanism much clearer and easier to 10255understand. 10256 10257Improved debug output for tracking scope opening/closing to help 10258diagnose scoping issues. The old scope name as well as the new 10259scope name are displayed. Also improved error messages for 10260problems with ASL Mutex objects and error messages for GPE 10261problems. 10262 10263Cleaned up the namespace dump code, removed obsolete code. 10264 10265All string output (for all namespace/object dumps) now uses the 10266common ACPI string output procedure which handles escapes properly 10267and does not emit non-printable characters. 10268 10269Fixed some issues with constants in the 64-bit version of the 10270local C library (utclib.c) 10271 10272 102732) Linux 10274 10275EC Driver: No longer attempts to acquire the Global Lock at 10276interrupt level. 10277 10278 102793) iASL Compiler/Disassembler 10280 10281Implemented ACPI 2.0B grammar change that disallows all Type 1 and 102822 opcodes outside of a control method. This means that the 10283"executable" operators (versus the "namespace" operators) cannot 10284be used at the table level; they can only be used within a control 10285method. 10286 10287Implemented the restriction on the Scope() operator where the 10288target must already exist in the namespace at the time the 10289operator is encountered (during ASL compilation). In other words, 10290forward references are not allowed and Scope() cannot create a new 10291object. This makes the iASL compiler compatible with other ACPI 10292implementations and makes the Scope() implementation adhere to the 10293ACPI specification. 10294 10295Fixed a problem where namepath optimization for the Alias operator 10296was optimizing the wrong path (of the two namepaths.) This caused 10297a "Missing alias link" error message. 10298 10299Fixed a problem where an "unknown reserved name" warning could be 10300incorrectly generated for names like "_SB" when the trailing 10301underscore is not used in the original ASL. 10302 10303Fixed a problem where the reserved name check did not handle 10304NamePaths with multiple NameSegs correctly. The first nameseg of 10305the NamePath was examined instead of the last NameSeg. 10306 10307 10308---------------------------------------- 10309 1031002 October 2002. Summary of changes for this release. 10311 10312 103131) ACPI CA Core Subsystem version 20021002: 10314 10315Fixed a problem where a store/copy of a string to an existing 10316string did not always set the string length properly in the String 10317object. 10318 10319Fixed a reported problem with the ToString operator where the 10320behavior was identical to the ToHexString operator instead of just 10321simply converting a raw buffer to a string data type. 10322 10323Fixed a problem where CopyObject and the other "explicit" 10324conversion operators were not updating the internal namespace node 10325type as part of the store operation. 10326 10327Fixed a memory leak during implicit source operand conversion 10328where the original object was not deleted if it was converted to a 10329new object of a different type. 10330 10331Enhanced error messages for all problems associated with namespace 10332lookups. Common procedure generates and prints the lookup name as 10333well as the formatted status. 10334 10335Completed implementation of a new design for the Alias support 10336within the namespace. The existing design did not handle the case 10337where a new object was assigned to one of the two names due to the 10338use of an explicit conversion operator, resulting in the two names 10339pointing to two different objects. The new design simply points 10340the Alias name to the original name node - not to the object. 10341This results in a level of indirection that must be handled in the 10342name resolution mechanism. 10343 10344Code and Data Size: Current core subsystem library sizes are shown 10345below. These are the code and data sizes for the acpica.lib 10346produced by the Microsoft Visual C++ 6.0 compiler, and these 10347values do not include any ACPI driver or OSPM code. The debug 10348version of the code includes the debug output trace mechanism and 10349has a larger code and data size. Note that these values will vary 10350depending on the efficiency of the compiler and the compiler 10351options used during generation. 10352 10353 Previous Release 10354 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 10355 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 10356 Current Release: 10357 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 10358 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 10359 10360 103612) Linux 10362 10363Initialize thermal driver's timer before it is used. (Knut 10364Neumann) 10365 10366Allow handling negative celsius values. (Kochi Takayoshi) 10367 10368Fix thermal management and make trip points. R/W (Pavel Machek) 10369 10370Fix /proc/acpi/sleep. (P. Christeas) 10371 10372IA64 fixes. (David Mosberger) 10373 10374Fix reversed logic in blacklist code. (Sergio Monteiro Basto) 10375 10376Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik 10377Brodowski) 10378 10379 103803) iASL Compiler/Disassembler 10381 10382Clarified some warning/error messages. 10383 10384 10385---------------------------------------- 1038618 September 2002. Summary of changes for this release. 10387 10388 103891) ACPI CA Core Subsystem version 20020918: 10390 10391Fixed a reported problem with reference chaining (via the Index() 10392and RefOf() operators) in the ObjectType() and SizeOf() operators. 10393The definition of these operators includes the dereferencing of 10394all chained references to return information on the base object. 10395 10396Fixed a problem with stores to indexed package elements - the 10397existing code would not complete the store if an "implicit 10398conversion" was not performed. In other words, if the existing 10399object (package element) was to be replaced completely, the code 10400didn't handle this case. 10401 10402Relaxed typechecking on the ASL "Scope" operator to allow the 10403target name to refer to an object of type Integer, String, or 10404Buffer, in addition to the scoping object types (Device, 10405predefined Scopes, Processor, PowerResource, and ThermalZone.) 10406This allows existing AML code that has workarounds for a bug in 10407Windows to function properly. A warning is issued, however. This 10408affects both the AML interpreter and the iASL compiler. Below is 10409an example of this type of ASL code: 10410 10411 Name(DEB,0x00) 10412 Scope(DEB) 10413 { 10414 10415Fixed some reported problems with 64-bit integer support in the 10416local implementation of C library functions (clib.c) 10417 10418 104192) Linux 10420 10421Use ACPI fix map region instead of IOAPIC region, since it is 10422undefined in non-SMP. 10423 10424Ensure that the SCI has the proper polarity and trigger, even on 10425systems that do not have an interrupt override entry in the MADT. 10426 104272.5 big driver reorganization (Pat Mochel) 10428 10429Use early table mapping code from acpitable.c (Andi Kleen) 10430 10431New blacklist entries (Andi Kleen) 10432 10433Blacklist improvements. Split blacklist code out into a separate 10434file. Move checking the blacklist to very early. Previously, we 10435would use ACPI tables, and then halfway through init, check the 10436blacklist -- too late. Now, it's early enough to completely fall- 10437back to non-ACPI. 10438 10439 104403) iASL Compiler/Disassembler version 20020918: 10441 10442Fixed a problem where the typechecking code didn't know that an 10443alias could point to a method. In other words, aliases were not 10444being dereferenced during typechecking. 10445 10446 10447---------------------------------------- 1044829 August 2002. Summary of changes for this release. 10449 104501) ACPI CA Core Subsystem Version 20020829: 10451 10452If the target of a Scope() operator already exists, it must be an 10453object type that actually opens a scope -- such as a Device, 10454Method, Scope, etc. This is a fatal runtime error. Similar error 10455check has been added to the iASL compiler also. 10456 10457Tightened up the namespace load to disallow multiple names in the 10458same scope. This previously was allowed if both objects were of 10459the same type. (i.e., a lookup was the same as entering a new 10460name). 10461 10462 104632) Linux 10464 10465Ensure that the ACPI interrupt has the proper trigger and 10466polarity. 10467 10468local_irq_disable is extraneous. (Matthew Wilcox) 10469 10470Make "acpi=off" actually do what it says, and not use the ACPI 10471interpreter *or* the tables. 10472 10473Added arch-neutral support for parsing SLIT and SRAT tables (Kochi 10474Takayoshi) 10475 10476 104773) iASL Compiler/Disassembler Version 20020829: 10478 10479Implemented namepath optimization for name declarations. For 10480example, a declaration like "Method (\_SB_.ABCD)" would get 10481optimized to "Method (ABCD)" if the declaration is within the 10482\_SB_ scope. This optimization is in addition to the named 10483reference path optimization first released in the previous 10484version. This would seem to complete all possible optimizations 10485for namepaths within the ASL/AML. 10486 10487If the target of a Scope() operator already exists, it must be an 10488object type that actually opens a scope -- such as a Device, 10489Method, Scope, etc. 10490 10491Implemented a check and warning for unreachable code in the same 10492block below a Return() statement. 10493 10494Fixed a problem where the listing file was not generated if the 10495compiler aborted if the maximum error count was exceeded (200). 10496 10497Fixed a problem where the typechecking of method return values was 10498broken. This includes the check for a return value when the 10499method is invoked as a TermArg (a return value is expected.) 10500 10501Fixed a reported problem where EOF conditions during a quoted 10502string or comment caused a fault. 10503 10504 10505---------------------------------------- 1050615 August 2002. Summary of changes for this release. 10507 105081) ACPI CA Core Subsystem Version 20020815: 10509 10510Fixed a reported problem where a Store to a method argument that 10511contains a reference did not perform the indirect store correctly. 10512This problem was created during the conversion to the new 10513reference object model - the indirect store to a method argument 10514code was not updated to reflect the new model. 10515 10516Reworked the ACPI mode change code to better conform to ACPI 2.0, 10517handle corner cases, and improve code legibility (Kochi Takayoshi) 10518 10519Fixed a problem with the pathname parsing for the carat (^) 10520prefix. The heavy use of the carat operator by the new namepath 10521optimization in the iASL compiler uncovered a problem with the AML 10522interpreter handling of this prefix. In the case where one or 10523more carats precede a single nameseg, the nameseg was treated as 10524standalone and the search rule (to root) was inadvertently 10525applied. This could cause both the iASL compiler and the 10526interpreter to find the wrong object or to miss the error that 10527should occur if the object does not exist at that exact pathname. 10528 10529Found and fixed the problem where the HP Pavilion DSDT would not 10530load. This was a relatively minor tweak to the table loading code 10531(a problem caused by the unexpected encounter with a method 10532invocation not within a control method), but it does not solve the 10533overall issue of the execution of AML code at the table level. 10534This investigation is still ongoing. 10535 10536Code and Data Size: Current core subsystem library sizes are shown 10537below. These are the code and data sizes for the acpica.lib 10538produced by the Microsoft Visual C++ 6.0 compiler, and these 10539values do not include any ACPI driver or OSPM code. The debug 10540version of the code includes the debug output trace mechanism and 10541has a larger code and data size. Note that these values will vary 10542depending on the efficiency of the compiler and the compiler 10543options used during generation. 10544 10545 Previous Release 10546 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 10547 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 10548 Current Release: 10549 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 10550 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 10551 10552 105532) Linux 10554 10555Remove redundant slab.h include (Brad Hards) 10556 10557Fix several bugs in thermal.c (Herbert Nachtnebel) 10558 10559Make CONFIG_ACPI_BOOT work properly (Pavel Machek) 10560 10561Change acpi_system_suspend to use updated irq functions (Pavel 10562Machek) 10563 10564Export acpi_get_firmware_table (Matthew Wilcox) 10565 10566Use proper root proc entry for ACPI (Kochi Takayoshi) 10567 10568Fix early-boot table parsing (Bjorn Helgaas) 10569 10570 105713) iASL Compiler/Disassembler 10572 10573Reworked the compiler options to make them more consistent and to 10574use two-letter options where appropriate. We were running out of 10575sensible letters. This may break some makefiles, so check the 10576current options list by invoking the compiler with no parameters. 10577 10578Completed the design and implementation of the ASL namepath 10579optimization option for the compiler. This option optimizes all 10580references to named objects to the shortest possible path. The 10581first attempt tries to utilize a single nameseg (4 characters) and 10582the "search-to-root" algorithm used by the interpreter. If that 10583cannot be used (because either the name is not in the search path 10584or there is a conflict with another object with the same name), 10585the pathname is optimized using the carat prefix (usually a 10586shorter string than specifying the entire path from the root.) 10587 10588Implemented support to obtain the DSDT from the Windows registry 10589(when the disassembly option is specified with no input file). 10590Added this code as the implementation for AcpiOsTableOverride in 10591the Windows OSL. Migrated the 16-bit code (used in the AcpiDump 10592utility) to scan memory for the DSDT to the AcpiOsTableOverride 10593function in the DOS OSL to make the disassembler truly OS 10594independent. 10595 10596Implemented a new option to disassemble and compile in one step. 10597When used without an input filename, this option will grab the 10598DSDT from the local machine, disassemble it, and compile it in one 10599step. 10600 10601Added a warning message for invalid escapes (a backslash followed 10602by any character other than the allowable escapes). This catches 10603the quoted string error "\_SB_" (which should be "\\_SB_" ). 10604 10605Also, there are numerous instances in the ACPI specification where 10606this error occurs. 10607 10608Added a compiler option to disable all optimizations. This is 10609basically the "compatibility mode" because by using this option, 10610the AML code will come out exactly the same as other ASL 10611compilers. 10612 10613Added error messages for incorrectly ordered dependent resource 10614functions. This includes: missing EndDependentFn macro at end of 10615dependent resource list, nested dependent function macros (both 10616start and end), and missing StartDependentFn macro. These are 10617common errors that should be caught at compile time. 10618 10619Implemented _OSI support for the disassembler and compiler. _OSI 10620must be included in the namespace for proper disassembly (because 10621the disassembler must know the number of arguments.) 10622 10623Added an "optimization" message type that is optional (off by 10624default). This message is used for all optimizations - including 10625constant folding, integer optimization, and namepath optimization. 10626 10627---------------------------------------- 1062825 July 2002. Summary of changes for this release. 10629 10630 106311) ACPI CA Core Subsystem Version 20020725: 10632 10633The AML Disassembler has been enhanced to produce compilable ASL 10634code and has been integrated into the iASL compiler (see below) as 10635well as the single-step disassembly for the AML debugger and the 10636disassembler for the AcpiDump utility. All ACPI 2.0A opcodes, 10637resource templates and macros are fully supported. The 10638disassembler has been tested on over 30 different AML files, 10639producing identical AML when the resulting disassembled ASL file 10640is recompiled with the same ASL compiler. 10641 10642Modified the Resource Manager to allow zero interrupts and zero 10643dma channels during the GetCurrentResources call. This was 10644causing problems on some platforms. 10645 10646Added the AcpiOsRedirectOutput interface to the OSL to simplify 10647output redirection for the AcpiOsPrintf and AcpiOsVprintf 10648interfaces. 10649 10650Code and Data Size: Current core subsystem library sizes are shown 10651below. These are the code and data sizes for the acpica.lib 10652produced by the Microsoft Visual C++ 6.0 compiler, and these 10653values do not include any ACPI driver or OSPM code. The debug 10654version of the code includes the debug output trace mechanism and 10655has a larger code and data size. Note that these values will vary 10656depending on the efficiency of the compiler and the compiler 10657options used during generation. 10658 10659 Previous Release 10660 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 10661 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 10662 Current Release: 10663 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 10664 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 10665 10666 106672) Linux 10668 10669Fixed a panic in the EC driver (Dominik Brodowski) 10670 10671Implemented checksum of the R/XSDT itself during Linux table scan 10672(Richard Schaal) 10673 10674 106753) iASL compiler 10676 10677The AML disassembler is integrated into the compiler. The "-d" 10678option invokes the disassembler to completely disassemble an 10679input AML file, producing as output a text ASL file with the 10680extension ".dsl" (to avoid name collisions with existing .asl 10681source files.) A future enhancement will allow the disassembler 10682to obtain the BIOS DSDT from the registry under Windows. 10683 10684Fixed a problem with the VendorShort and VendorLong resource 10685descriptors where an invalid AML sequence was created. 10686 10687Implemented a fix for BufferData term in the ASL parser. It was 10688inadvertently defined twice, allowing invalid syntax to pass and 10689causing reduction conflicts. 10690 10691Fixed a problem where the Ones opcode could get converted to a 10692value of zero if "Ones" was used where a byte, word or dword value 10693was expected. The 64-bit value is now truncated to the correct 10694size with the correct value. 10695 10696 10697 10698---------------------------------------- 1069902 July 2002. Summary of changes for this release. 10700 10701 107021) ACPI CA Core Subsystem Version 20020702: 10703 10704The Table Manager code has been restructured to add several new 10705features. Tables that are not required by the core subsystem 10706(other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer 10707validated in any way and are returned from AcpiGetFirmwareTable if 10708requested. The AcpiOsTableOverride interface is now called for 10709each table that is loaded by the subsystem in order to allow the 10710host to override any table it chooses. Previously, only the DSDT 10711could be overridden. Added one new files, tbrsdt.c and 10712tbgetall.c. 10713 10714Fixed a problem with the conversion of internal package objects to 10715external objects (when a package is returned from a control 10716method.) The return buffer length was set to zero instead of the 10717proper length of the package object. 10718 10719Fixed a reported problem with the use of the RefOf and DeRefOf 10720operators when passing reference arguments to control methods. A 10721new type of Reference object is used internally for references 10722produced by the RefOf operator. 10723 10724Added additional error messages in the Resource Manager to explain 10725AE_BAD_DATA errors when they occur during resource parsing. 10726 10727Split the AcpiEnableSubsystem into two primitives to enable a 10728finer granularity initialization sequence. These two calls should 10729be called in this order: AcpiEnableSubsystem (flags), 10730AcpiInitializeObjects (flags). The flags parameter remains the 10731same. 10732 10733 107342) Linux 10735 10736Updated the ACPI utilities module to understand the new style of 10737fully resolved package objects that are now returned from the core 10738subsystem. This eliminates errors of the form: 10739 10740 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT] 10741 acpi_utils-0430 [145] acpi_evaluate_reference: 10742 Invalid element in package (not a device reference) 10743 10744The method evaluation utility uses the new buffer allocation 10745scheme instead of calling AcpiEvaluate Object twice. 10746 10747Added support for ECDT. This allows the use of the Embedded 10748 10749Controller before the namespace has been fully initialized, which 10750is necessary for ACPI 2.0 support, and for some laptops to 10751initialize properly. (Laptops using ECDT are still rare, so only 10752limited testing was performed of the added functionality.) 10753 10754Fixed memory leaks in the EC driver. 10755 10756Eliminated a brittle code structure in acpi_bus_init(). 10757 10758Eliminated the acpi_evaluate() helper function in utils.c. It is 10759no longer needed since acpi_evaluate_object can optionally 10760allocate memory for the return object. 10761 10762Implemented fix for keyboard hang when getting battery readings on 10763some systems (Stephen White) 10764 10765PCI IRQ routing update (Dominik Brodowski) 10766 10767Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC 10768support 10769 10770---------------------------------------- 1077111 June 2002. Summary of changes for this release. 10772 10773 107741) ACPI CA Core Subsystem Version 20020611: 10775 10776Fixed a reported problem where constants such as Zero and One 10777appearing within _PRT packages were not handled correctly within 10778the resource manager code. Originally reported against the ASL 10779compiler because the code generator now optimizes integers to 10780their minimal AML representation (i.e. AML constants if possible.) 10781The _PRT code now handles all AML constant opcodes correctly 10782(Zero, One, Ones, Revision). 10783 10784Fixed a problem with the Concatenate operator in the AML 10785interpreter where a buffer result object was incorrectly marked as 10786not fully evaluated, causing a run-time error of AE_AML_INTERNAL. 10787 10788All package sub-objects are now fully resolved before they are 10789returned from the external ACPI interfaces. This means that name 10790strings are resolved to object handles, and constant operators 10791(Zero, One, Ones, Revision) are resolved to Integers. 10792 10793Implemented immediate resolution of the AML Constant opcodes 10794(Zero, One, Ones, Revision) to Integer objects upon detection 10795within the AML stream. This has simplified and reduced the 10796generated code size of the subsystem by eliminating about 10 10797switch statements for these constants (which previously were 10798contained in Reference objects.) The complicating issues are that 10799the Zero opcode is used as a "placeholder" for unspecified 10800optional target operands and stores to constants are defined to be 10801no-ops. 10802 10803Code and Data Size: Current core subsystem library sizes are shown 10804below. These are the code and data sizes for the acpica.lib 10805produced by the Microsoft Visual C++ 6.0 compiler, and these 10806values do not include any ACPI driver or OSPM code. The debug 10807version of the code includes the debug output trace mechanism and 10808has a larger code and data size. Note that these values will vary 10809depending on the efficiency of the compiler and the compiler 10810options used during generation. 10811 10812 Previous Release 10813 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 10814 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 10815 Current Release: 10816 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 10817 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 10818 10819 108202) Linux 10821 10822 10823Added preliminary support for obtaining _TRA data for PCI root 10824bridges (Bjorn Helgaas). 10825 10826 108273) iASL Compiler Version X2046: 10828 10829Fixed a problem where the "_DDN" reserved name was defined to be a 10830control method with one argument. There are no arguments, and 10831_DDN does not have to be a control method. 10832 10833Fixed a problem with the Linux version of the compiler where the 10834source lines printed with error messages were the wrong lines. 10835This turned out to be the "LF versus CR/LF" difference between 10836Windows and Unix. This appears to be the longstanding issue 10837concerning listing output and error messages. 10838 10839Fixed a problem with the Linux version of compiler where opcode 10840names within error messages were wrong. This was caused by a 10841slight difference in the output of the Flex tool on Linux versus 10842Windows. 10843 10844Fixed a problem with the Linux compiler where the hex output files 10845contained some garbage data caused by an internal buffer overrun. 10846 10847 10848---------------------------------------- 1084917 May 2002. Summary of changes for this release. 10850 10851 108521) ACPI CA Core Subsystem Version 20020517: 10853 10854Implemented a workaround to an BIOS bug discovered on the HP 10855OmniBook where the FADT revision number and the table size are 10856inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new 10857behavior is to fallback to using only the ACPI 1.0 fields of the 10858FADT if the table is too small to be a ACPI 2.0 table as claimed 10859by the revision number. Although this is a BIOS bug, this is a 10860case where the workaround is simple enough and with no side 10861effects, so it seemed prudent to add it. A warning message is 10862issued, however. 10863 10864Implemented minimum size checks for the fixed-length ACPI tables - 10865- the FADT and FACS, as well as consistency checks between the 10866revision number and the table size. 10867 10868Fixed a reported problem in the table override support where the 10869new table pointer was incorrectly treated as a physical address 10870instead of a logical address. 10871 10872Eliminated the use of the AE_AML_ERROR exception and replaced it 10873with more descriptive codes. 10874 10875Fixed a problem where an exception would occur if an ASL Field was 10876defined with no named Field Units underneath it (used by some 10877index fields). 10878 10879Code and Data Size: Current core subsystem library sizes are shown 10880below. These are the code and data sizes for the acpica.lib 10881produced by the Microsoft Visual C++ 6.0 compiler, and these 10882values do not include any ACPI driver or OSPM code. The debug 10883version of the code includes the debug output trace mechanism and 10884has a larger code and data size. Note that these values will vary 10885depending on the efficiency of the compiler and the compiler 10886options used during generation. 10887 10888 Previous Release 10889 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 10890 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 10891 Current Release: 10892 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 10893 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 10894 10895 10896 108972) Linux 10898 10899Much work done on ACPI init (MADT and PCI IRQ routing support). 10900(Paul D. and Dominik Brodowski) 10901 10902Fix PCI IRQ-related panic on boot (Sam Revitch) 10903 10904Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno) 10905 10906Fix "MHz" typo (Dominik Brodowski) 10907 10908Fix RTC year 2000 issue (Dominik Brodowski) 10909 10910Preclude multiple button proc entries (Eric Brunet) 10911 10912Moved arch-specific code out of include/platform/aclinux.h 10913 109143) iASL Compiler Version X2044: 10915 10916Implemented error checking for the string used in the EISAID macro 10917(Usually used in the definition of the _HID object.) The code now 10918strictly enforces the PnP format - exactly 7 characters, 3 10919uppercase letters and 4 hex digits. 10920 10921If a raw string is used in the definition of the _HID object 10922(instead of the EISAID macro), the string must contain all 10923alphanumeric characters (e.g., "*PNP0011" is not allowed because 10924of the asterisk.) 10925 10926Implemented checking for invalid use of ACPI reserved names for 10927most of the name creation operators (Name, Device, Event, Mutex, 10928OperationRegion, PowerResource, Processor, and ThermalZone.) 10929Previously, this check was only performed for control methods. 10930 10931Implemented an additional check on the Name operator to emit an 10932error if a reserved name that must be implemented in ASL as a 10933control method is used. We know that a reserved name must be a 10934method if it is defined with input arguments. 10935 10936The warning emitted when a namespace object reference is not found 10937during the cross reference phase has been changed into an error. 10938The "External" directive should be used for names defined in other 10939modules. 10940 10941 109424) Tools and Utilities 10943 10944The 16-bit tools (adump16 and aexec16) have been regenerated and 10945tested. 10946 10947Fixed a problem with the output of both acpidump and adump16 where 10948the indentation of closing parentheses and brackets was not 10949 10950aligned properly with the parent block. 10951 10952 10953---------------------------------------- 1095403 May 2002. Summary of changes for this release. 10955 10956 109571) ACPI CA Core Subsystem Version 20020503: 10958 10959Added support a new OSL interface that allows the host operating 10960 10961system software to override the DSDT found in the firmware - 10962AcpiOsTableOverride. With this interface, the OSL can examine the 10963version of the firmware DSDT and replace it with a different one 10964if desired. 10965 10966Added new external interfaces for accessing ACPI registers from 10967device drivers and other system software - AcpiGetRegister and 10968AcpiSetRegister. This was simply an externalization of the 10969existing AcpiHwBitRegister interfaces. 10970 10971Fixed a regression introduced in the previous build where the 10972ASL/AML CreateField operator always returned an error, 10973"destination must be a NS Node". 10974 10975Extended the maximum time (before failure) to successfully enable 10976ACPI mode to 3 seconds. 10977 10978Code and Data Size: Current core subsystem library sizes are shown 10979below. These are the code and data sizes for the acpica.lib 10980produced by the Microsoft Visual C++ 6.0 compiler, and these 10981values do not include any ACPI driver or OSPM code. The debug 10982version of the code includes the debug output trace mechanism and 10983has a larger code and data size. Note that these values will vary 10984depending on the efficiency of the compiler and the compiler 10985options used during generation. 10986 10987 Previous Release 10988 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 10989 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 10990 Current Release: 10991 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 10992 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 10993 10994 109952) Linux 10996 10997Enhanced ACPI init code for SMP. We are now fully MPS and $PIR- 10998free. While 3 out of 4 of our in-house systems work fine, the last 10999one still hangs when testing the LAPIC timer. 11000 11001Renamed many files in 2.5 kernel release to omit "acpi_" from the 11002name. 11003 11004Added warning on boot for Presario 711FR. 11005 11006Sleep improvements (Pavel Machek) 11007 11008ACPI can now be built without CONFIG_PCI enabled. 11009 11010IA64: Fixed memory map functions (JI Lee) 11011 11012 110133) iASL Compiler Version X2043: 11014 11015Added support to allow the compiler to be integrated into the MS 11016VC++ development environment for one-button compilation of single 11017files or entire projects -- with error-to-source-line mapping. 11018 11019Implemented support for compile-time constant folding for the 11020Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0 11021specification. This allows the ASL writer to use expressions 11022instead of Integer/Buffer/String constants in terms that must 11023evaluate to constants at compile time and will also simplify the 11024emitted AML in any such sub-expressions that can be folded 11025(evaluated at compile-time.) This increases the size of the 11026compiler significantly because a portion of the ACPI CA AML 11027interpreter is included within the compiler in order to pre- 11028evaluate constant expressions. 11029 11030 11031Fixed a problem with the "Unicode" ASL macro that caused the 11032compiler to fault. (This macro is used in conjunction with the 11033_STR reserved name.) 11034 11035Implemented an AML opcode optimization to use the Zero, One, and 11036Ones opcodes where possible to further reduce the size of integer 11037constants and thus reduce the overall size of the generated AML 11038code. 11039 11040Implemented error checking for new reserved terms for ACPI version 110412.0A. 11042 11043Implemented the -qr option to display the current list of ACPI 11044reserved names known to the compiler. 11045 11046Implemented the -qc option to display the current list of ASL 11047operators that are allowed within constant expressions and can 11048therefore be folded at compile time if the operands are constants. 11049 11050 110514) Documentation 11052 11053Updated the Programmer's Reference for new interfaces, data types, 11054and memory allocation model options. 11055 11056Updated the iASL Compiler User Reference to apply new format and 11057add information about new features and options. 11058 11059---------------------------------------- 1106019 April 2002. Summary of changes for this release. 11061 110621) ACPI CA Core Subsystem Version 20020419: 11063 11064The source code base for the Core Subsystem has been completely 11065cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit 11066versions. The Lint option files used are included in the 11067/acpi/generate/lint directory. 11068 11069Implemented enhanced status/error checking across the entire 11070Hardware manager subsystem. Any hardware errors (reported from 11071the OSL) are now bubbled up and will abort a running control 11072method. 11073 11074 11075Fixed a problem where the per-ACPI-table integer width (32 or 64) 11076was stored only with control method nodes, causing a fault when 11077non-control method code was executed during table loading. The 11078solution implemented uses a global variable to indicate table 11079width across the entire ACPI subsystem. Therefore, ACPI CA does 11080not support mixed integer widths across different ACPI tables 11081(DSDT, SSDT). 11082 11083Fixed a problem where NULL extended fields (X fields) in an ACPI 110842.0 ACPI FADT caused the table load to fail. Although the 11085existing ACPI specification is a bit fuzzy on this topic, the new 11086behavior is to fall back on a ACPI 1.0 field if the corresponding 11087ACPI 2.0 X field is zero (even though the table revision indicates 11088a full ACPI 2.0 table.) The ACPI specification will be updated to 11089clarify this issue. 11090 11091Fixed a problem with the SystemMemory operation region handler 11092where memory was always accessed byte-wise even if the AML- 11093specified access width was larger than a byte. This caused 11094problems on systems with memory-mapped I/O. Memory is now 11095accessed with the width specified. On systems that do not support 11096non-aligned transfers, a check is made to guarantee proper address 11097alignment before proceeding in order to avoid an AML-caused 11098alignment fault within the kernel. 11099 11100 11101Fixed a problem with the ExtendedIrq resource where only one byte 11102of the 4-byte Irq field was extracted. 11103 11104Fixed the AcpiExDigitsNeeded() procedure to support _UID. This 11105function was out of date and required a rewrite. 11106 11107Code and Data Size: Current core subsystem library sizes are shown 11108below. These are the code and data sizes for the acpica.lib 11109produced by the Microsoft Visual C++ 6.0 compiler, and these 11110values do not include any ACPI driver or OSPM code. The debug 11111version of the code includes the debug output trace mechanism and 11112has a larger code and data size. Note that these values will vary 11113depending on the efficiency of the compiler and the compiler 11114options used during generation. 11115 11116 Previous Release 11117 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 11118 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 11119 Current Release: 11120 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 11121 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 11122 11123 111242) Linux 11125 11126PCI IRQ routing fixes (Dominik Brodowski) 11127 11128 111293) iASL Compiler Version X2042: 11130 11131Implemented an additional compile-time error check for a field 11132unit whose size + minimum access width would cause a run-time 11133access beyond the end-of-region. Previously, only the field size 11134itself was checked. 11135 11136The Core subsystem and iASL compiler now share a common parse 11137object in preparation for compile-time evaluation of the type 111383/4/5 ASL operators. 11139 11140 11141---------------------------------------- 11142Summary of changes for this release: 03_29_02 11143 111441) ACPI CA Core Subsystem Version 20020329: 11145 11146Implemented support for late evaluation of TermArg operands to 11147Buffer and Package objects. This allows complex expressions to be 11148used in the declarations of these object types. 11149 11150Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI 111511.0, if the field was larger than 32 bits, it was returned as a 11152buffer - otherwise it was returned as an integer. In ACPI 2.0, 11153the field is returned as a buffer only if the field is larger than 1115464 bits. The TableRevision is now considered when making this 11155conversion to avoid incompatibility with existing ASL code. 11156 11157Implemented logical addressing for AcpiOsGetRootPointer. This 11158allows an RSDP with either a logical or physical address. With 11159this support, the host OS can now override all ACPI tables with 11160one logical RSDP. Includes implementation of "typed" pointer 11161support to allow a common data type for both physical and logical 11162pointers internally. This required a change to the 11163AcpiOsGetRootPointer interface. 11164 11165Implemented the use of ACPI 2.0 Generic Address Structures for all 11166GPE, Fixed Event, and PM Timer I/O. This allows the use of memory 11167mapped I/O for these ACPI features. 11168 11169Initialization now ignores not only non-required tables (All 11170tables other than the FADT, FACS, DSDT, and SSDTs), but also does 11171not validate the table headers of unrecognized tables. 11172 11173Fixed a problem where a notify handler could only be 11174installed/removed on an object of type Device. All "notify" 11175 11176objects are now supported -- Devices, Processor, Power, and 11177Thermal. 11178 11179Removed most verbosity from the ACPI_DB_INFO debug level. Only 11180critical information is returned when this debug level is enabled. 11181 11182Code and Data Size: Current core subsystem library sizes are shown 11183below. These are the code and data sizes for the acpica.lib 11184produced by the Microsoft Visual C++ 6.0 compiler, and these 11185values do not include any ACPI driver or OSPM code. The debug 11186version of the code includes the debug output trace mechanism and 11187has a larger code and data size. Note that these values will vary 11188depending on the efficiency of the compiler and the compiler 11189options used during generation. 11190 11191 Previous Release 11192 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 11193 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 11194 Current Release: 11195 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 11196 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 11197 11198 111992) Linux: 11200 11201The processor driver (acpi_processor.c) now fully supports ACPI 112022.0-based processor performance control (e.g. Intel(R) 11203SpeedStep(TM) technology) Note that older laptops that only have 11204the Intel "applet" interface are not supported through this. The 11205'limit' and 'performance' interface (/proc) are fully functional. 11206[Note that basic policy for controlling performance state 11207transitions will be included in the next version of ospmd.] The 11208idle handler was modified to more aggressively use C2, and PIIX4 11209errata handling underwent a complete overhaul (big thanks to 11210Dominik Brodowski). 11211 11212Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR- 11213based devices in the ACPI namespace are now dynamically bound 11214(associated) with their PCI counterparts (e.g. PCI1->01:00.0). 11215This allows, among other things, ACPI to resolve bus numbers for 11216subordinate PCI bridges. 11217 11218Enhanced PCI IRQ routing to get the proper bus number for _PRT 11219entries defined underneath PCI bridges. 11220 11221Added IBM 600E to bad bios list due to invalid _ADR value for 11222PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing. 11223 11224In the process of adding full MADT support (e.g. IOAPIC) for IA32 11225(acpi.c, mpparse.c) -- stay tuned. 11226 11227Added back visual differentiation between fixed-feature and 11228control-method buttons in dmesg. Buttons are also subtyped (e.g. 11229button/power/PWRF) to simplify button identification. 11230 11231We no longer use -Wno-unused when compiling debug. Please ignore 11232any "_THIS_MODULE defined but not used" messages. 11233 11234Can now shut down the system using "magic sysrq" key. 11235 11236 112373) iASL Compiler version 2041: 11238 11239Fixed a problem where conversion errors for hex/octal/decimal 11240constants were not reported. 11241 11242Implemented a fix for the General Register template Address field. 11243This field was 8 bits when it should be 64. 11244 11245Fixed a problem where errors/warnings were no longer being emitted 11246within the listing output file. 11247 11248Implemented the ACPI 2.0A restriction on ACPI Table Signatures to 11249exactly 4 characters, alphanumeric only. 11250 11251 11252 11253 11254---------------------------------------- 11255Summary of changes for this release: 03_08_02 11256 11257 112581) ACPI CA Core Subsystem Version 20020308: 11259 11260Fixed a problem with AML Fields where the use of the "AccessAny" 11261keyword could cause an interpreter error due to attempting to read 11262or write beyond the end of the parent Operation Region. 11263 11264Fixed a problem in the SystemMemory Operation Region handler where 11265an attempt was made to map memory beyond the end of the region. 11266This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY" 11267errors on some Linux systems. 11268 11269Fixed a problem where the interpreter/namespace "search to root" 11270algorithm was not functioning for some object types. Relaxed the 11271internal restriction on the search to allow upsearches for all 11272external object types as well as most internal types. 11273 11274 112752) Linux: 11276 11277We now use safe_halt() macro versus individual calls to sti | hlt. 11278 11279Writing to the processor limit interface should now work. "echo 1" 11280will increase the limit, 2 will decrease, and 0 will reset to the 11281 11282default. 11283 11284 112853) ASL compiler: 11286 11287Fixed segfault on Linux version. 11288 11289 11290---------------------------------------- 11291Summary of changes for this release: 02_25_02 11292 112931) ACPI CA Core Subsystem: 11294 11295 11296Fixed a problem where the GPE bit masks were not initialized 11297properly, causing erratic GPE behavior. 11298 11299Implemented limited support for multiple calling conventions. The 11300code can be generated with either the VPL (variable parameter 11301list, or "C") convention, or the FPL (fixed parameter list, or 11302"Pascal") convention. The core subsystem is about 3.4% smaller 11303when generated with FPL. 11304 11305 113062) Linux 11307 11308Re-add some /proc/acpi/event functionality that was lost during 11309the rewrite 11310 11311Resolved issue with /proc events for fixed-feature buttons showing 11312up as the system device. 11313 11314Fixed checks on C2/C3 latencies to be inclusive of maximum values. 11315 11316Replaced AE_ERRORs in acpi_osl.c with more specific error codes. 11317 11318Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi" 11319 11320Fixed limit interface & usage to fix bugs with passive cooling 11321hysterisis. 11322 11323Restructured PRT support. 11324 11325 11326---------------------------------------- 11327Summary of changes for this label: 02_14_02 11328 11329 113301) ACPI CA Core Subsystem: 11331 11332Implemented support in AcpiLoadTable to allow loading of FACS and 11333FADT tables. 11334 11335Suport for the now-obsolete interim 0.71 64-bit ACPI tables has 11336been removed. All 64-bit platforms should be migrated to the ACPI 113372.0 tables. The actbl71.h header has been removed from the source 11338tree. 11339 11340All C macros defined within the subsystem have been prefixed with 11341"ACPI_" to avoid collision with other system include files. 11342 11343Removed the return value for the two AcpiOsPrint interfaces, since 11344it is never used and causes lint warnings for ignoring the return 11345value. 11346 11347Added error checking to all internal mutex acquire and release 11348calls. Although a failure from one of these interfaces is 11349probably a fatal system error, these checks will cause the 11350immediate abort of the currently executing method or interface. 11351 11352Fixed a problem where the AcpiSetCurrentResources interface could 11353fault. This was a side effect of the deployment of the new memory 11354allocation model. 11355 11356Fixed a couple of problems with the Global Lock support introduced 11357in the last major build. The "common" (1.0/2.0) internal FACS was 11358being overwritten with the FACS signature and clobbering the 11359Global Lock pointer. Also, the actual firmware FACS was being 11360unmapped after construction of the "common" FACS, preventing 11361access to the actual Global Lock field within it. The "common" 11362internal FACS is no longer installed as an actual ACPI table; it 11363is used simply as a global. 11364 11365Code and Data Size: Current core subsystem library sizes are shown 11366below. These are the code and data sizes for the acpica.lib 11367produced by the Microsoft Visual C++ 6.0 compiler, and these 11368values do not include any ACPI driver or OSPM code. The debug 11369version of the code includes the debug output trace mechanism and 11370has a larger code and data size. Note that these values will vary 11371depending on the efficiency of the compiler and the compiler 11372options used during generation. 11373 11374 Previous Release (02_07_01) 11375 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 11376 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 11377 Current Release: 11378 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 11379 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 11380 11381 113822) Linux 11383 11384Updated Linux-specific code for core macro and OSL interface 11385changes described above. 11386 11387Improved /proc/acpi/event. It now can be opened only once and has 11388proper poll functionality. 11389 11390Fixed and restructured power management (acpi_bus). 11391 11392Only create /proc "view by type" when devices of that class exist. 11393 11394Fixed "charging/discharging" bug (and others) in acpi_battery. 11395 11396Improved thermal zone code. 11397 11398 113993) ASL Compiler, version X2039: 11400 11401 11402Implemented the new compiler restriction on ASL String hex/octal 11403escapes to non-null, ASCII values. An error results if an invalid 11404value is used. (This will require an ACPI 2.0 specification 11405change.) 11406 11407AML object labels that are output to the optional C and ASM source 11408are now prefixed with both the ACPI table signature and table ID 11409to help guarantee uniqueness within a large BIOS project. 11410 11411 11412---------------------------------------- 11413Summary of changes for this label: 02_01_02 11414 114151) ACPI CA Core Subsystem: 11416 11417ACPI 2.0 support is complete in the entire Core Subsystem and the 11418ASL compiler. All new ACPI 2.0 operators are implemented and all 11419other changes for ACPI 2.0 support are complete. With 11420simultaneous code and data optimizations throughout the subsystem, 11421ACPI 2.0 support has been implemented with almost no additional 11422cost in terms of code and data size. 11423 11424Implemented a new mechanism for allocation of return buffers. If 11425the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will 11426be allocated on behalf of the caller. Consolidated all return 11427buffer validation and allocation to a common procedure. Return 11428buffers will be allocated via the primary OSL allocation interface 11429since it appears that a separate pool is not needed by most users. 11430If a separate pool is required for these buffers, the caller can 11431still use the original mechanism and pre-allocate the buffer(s). 11432 11433Implemented support for string operands within the DerefOf 11434operator. 11435 11436Restructured the Hardware and Event managers to be table driven, 11437simplifying the source code and reducing the amount of generated 11438code. 11439 11440Split the common read/write low-level ACPI register bitfield 11441procedure into a separate read and write, simplifying the code 11442considerably. 11443 11444Obsoleted the AcpiOsCallocate OSL interface. This interface was 11445used only a handful of times and didn't have enough critical mass 11446for a separate interface. Replaced with a common calloc procedure 11447in the core. 11448 11449Fixed a reported problem with the GPE number mapping mechanism 11450that allows GPE1 numbers to be non-contiguous with GPE0. 11451Reorganized the GPE information and shrunk a large array that was 11452originally large enough to hold info for all possible GPEs (256) 11453to simply large enough to hold all GPEs up to the largest GPE 11454number on the machine. 11455 11456Fixed a reported problem with resource structure alignment on 64- 11457bit platforms. 11458 11459Changed the AcpiEnableEvent and AcpiDisableEvent external 11460interfaces to not require any flags for the common case of 11461enabling/disabling a GPE. 11462 11463Implemented support to allow a "Notify" on a Processor object. 11464 11465Most TBDs in comments within the source code have been resolved 11466and eliminated. 11467 11468 11469Fixed a problem in the interpreter where a standalone parent 11470prefix (^) was not handled correctly in the interpreter and 11471debugger. 11472 11473Removed obsolete and unnecessary GPE save/restore code. 11474 11475Implemented Field support in the ASL Load operator. This allows a 11476table to be loaded from a named field, in addition to loading a 11477table directly from an Operation Region. 11478 11479Implemented timeout and handle support in the external Global Lock 11480interfaces. 11481 11482Fixed a problem in the AcpiDump utility where pathnames were no 11483longer being generated correctly during the dump of named objects. 11484 11485Modified the AML debugger to give a full display of if/while 11486predicates instead of just one AML opcode at a time. (The 11487predicate can have several nested ASL statements.) The old method 11488was confusing during single stepping. 11489 11490Code and Data Size: Current core subsystem library sizes are shown 11491below. These are the code and data sizes for the acpica.lib 11492produced by the Microsoft Visual C++ 6.0 compiler, and these 11493values do not include any ACPI driver or OSPM code. The debug 11494version of the code includes the debug output trace mechanism and 11495has a larger code and data size. Note that these values will vary 11496depending on the efficiency of the compiler and the compiler 11497options used during generation. 11498 11499 Previous Release (12_18_01) 11500 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 11501 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 11502 Current Release: 11503 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 11504 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 11505 115062) Linux 11507 11508 Implemented fix for PIIX reverse throttling errata (Processor 11509driver) 11510 11511Added new Limit interface (Processor and Thermal drivers) 11512 11513New thermal policy (Thermal driver) 11514 11515Many updates to /proc 11516 11517Battery "low" event support (Battery driver) 11518 11519Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers) 11520 11521IA32 - IA64 initialization unification, no longer experimental 11522 11523Menuconfig options redesigned 11524 115253) ASL Compiler, version X2037: 11526 11527Implemented several new output features to simplify integration of 11528AML code into firmware: 1) Output the AML in C source code with 11529labels for each named ASL object. The original ASL source code 11530is interleaved as C comments. 2) Output the AML in ASM source code 11531with labels and interleaved ASL source. 3) Output the AML in 11532raw hex table form, in either C or ASM. 11533 11534Implemented support for optional string parameters to the 11535LoadTable operator. 11536 11537Completed support for embedded escape sequences within string 11538literals. The compiler now supports all single character escapes 11539as well as the Octal and Hex escapes. Note: the insertion of a 11540null byte into a string literal (via the hex/octal escape) causes 11541the string to be immediately terminated. A warning is issued. 11542 11543Fixed a problem where incorrect AML was generated for the case 11544where an ASL namepath consists of a single parent prefix ( 11545 11546) with no trailing name segments. 11547 11548The compiler has been successfully generated with a 64-bit C 11549compiler. 11550 11551 11552 11553 11554---------------------------------------- 11555Summary of changes for this label: 12_18_01 11556 115571) Linux 11558 11559Enhanced blacklist with reason and severity fields. Any table's 11560signature may now be used to identify a blacklisted system. 11561 11562Call _PIC control method to inform the firmware which interrupt 11563model the OS is using. Turn on any disabled link devices. 11564 11565Cleaned up busmgr /proc error handling (Andreas Dilger) 11566 11567 2) ACPI CA Core Subsystem: 11568 11569Implemented ACPI 2.0 semantics for the "Break" operator (Exit from 11570while loop) 11571 11572Completed implementation of the ACPI 2.0 "Continue", 11573"ConcatenateResTemplate", "DataTableRegion", and "LoadTable" 11574operators. All new ACPI 2.0 operators are now implemented in both 11575the ASL compiler and the AML interpreter. The only remaining ACPI 115762.0 task is support for the String data type in the DerefOf 11577operator. Fixed a problem with AcquireMutex where the status code 11578was lost if the caller had to actually wait for the mutex. 11579 11580Increased the maximum ASL Field size from 64K bits to 4G bits. 11581 11582Completed implementation of the external Global Lock interfaces -- 11583AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and 11584Handler parameters were added. 11585 11586Completed another pass at removing warnings and issues when 11587compiling with 64-bit compilers. The code now compiles cleanly 11588with the Intel 64-bit C/C++ compiler. Most notably, the pointer 11589add and subtract (diff) macros have changed considerably. 11590 11591 11592Created and deployed a new ACPI_SIZE type that is 64-bits wide on 1159364-bit platforms, 32-bits on all others. This type is used 11594wherever memory allocation and/or the C sizeof() operator is used, 11595and affects the OSL memory allocation interfaces AcpiOsAllocate 11596and AcpiOsCallocate. 11597 11598Implemented sticky user breakpoints in the AML debugger. 11599 11600Code and Data Size: Current core subsystem library sizes are shown 11601below. These are the code and data sizes for the acpica.lib 11602produced by the Microsoft Visual C++ 6.0 compiler, and these 11603values do not include any ACPI driver or OSPM code. The debug 11604version of the code includes the debug output trace mechanism and 11605has a larger code and data size. Note that these values will vary 11606depending on the efficiency of the compiler and the compiler 11607options used during generation. 11608 11609 Previous Release (12_05_01) 11610 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 11611 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 11612 Current Release: 11613 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 11614 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 11615 11616 3) ASL Compiler, version X2034: 11617 11618Now checks for (and generates an error if detected) the use of a 11619Break or Continue statement without an enclosing While statement. 11620 11621 11622Successfully generated the compiler with the Intel 64-bit C 11623compiler. 11624 11625 ---------------------------------------- 11626Summary of changes for this label: 12_05_01 11627 11628 1) ACPI CA Core Subsystem: 11629 11630The ACPI 2.0 CopyObject operator is fully implemented. This 11631operator creates a new copy of an object (and is also used to 11632bypass the "implicit conversion" mechanism of the Store operator.) 11633 11634The ACPI 2.0 semantics for the SizeOf operator are fully 11635implemented. The change is that performing a SizeOf on a 11636reference object causes an automatic dereference of the object to 11637tha actual value before the size is evaluated. This behavior was 11638undefined in ACPI 1.0. 11639 11640The ACPI 2.0 semantics for the Extended IRQ resource descriptor 11641have been implemented. The interrupt polarity and mode are now 11642independently set. 11643 11644Fixed a problem where ASL Constants (Zero, One, Ones, Revision) 11645appearing in Package objects were not properly converted to 11646integers when the internal Package was converted to an external 11647object (via the AcpiEvaluateObject interface.) 11648 11649Fixed a problem with the namespace object deletion mechanism for 11650objects created by control methods. There were two parts to this 11651problem: 1) Objects created during the initialization phase method 11652parse were not being deleted, and 2) The object owner ID mechanism 11653to track objects was broken. 11654 11655Fixed a problem where the use of the ASL Scope operator within a 11656control method would result in an invalid opcode exception. 11657 11658Fixed a problem introduced in the previous label where the buffer 11659length required for the _PRT structure was not being returned 11660correctly. 11661 11662Code and Data Size: Current core subsystem library sizes are shown 11663below. These are the code and data sizes for the acpica.lib 11664produced by the Microsoft Visual C++ 6.0 compiler, and these 11665values do not include any ACPI driver or OSPM code. The debug 11666version of the code includes the debug output trace mechanism and 11667has a larger code and data size. Note that these values will vary 11668depending on the efficiency of the compiler and the compiler 11669options used during generation. 11670 11671 Previous Release (11_20_01) 11672 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 11673 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 11674 11675 Current Release: 11676 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 11677 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 11678 11679 2) Linux: 11680 11681Updated all files to apply cleanly against 2.4.16. 11682 11683Added basic PCI Interrupt Routing Table (PRT) support for IA32 11684(acpi_pci.c), and unified the PRT code for IA32 and IA64. This 11685version supports both static and dyanmic PRT entries, but dynamic 11686entries are treated as if they were static (not yet 11687reconfigurable). Architecture- specific code to use this data is 11688absent on IA32 but should be available shortly. 11689 11690Changed the initialization sequence to start the ACPI interpreter 11691(acpi_init) prior to initialization of the PCI driver (pci_init) 11692in init/main.c. This ordering is required to support PRT and 11693facilitate other (future) enhancement. A side effect is that the 11694ACPI bus driver and certain device drivers can no longer be loaded 11695as modules. 11696 11697Modified the 'make menuconfig' options to allow PCI Interrupt 11698Routing support to be included without the ACPI Bus and other 11699device drivers. 11700 11701 3) ASL Compiler, version X2033: 11702 11703Fixed some issues with the use of the new CopyObject and 11704DataTableRegion operators. Both are fully functional. 11705 11706 ---------------------------------------- 11707Summary of changes for this label: 11_20_01 11708 11709 20 November 2001. Summary of changes for this release. 11710 11711 1) ACPI CA Core Subsystem: 11712 11713Updated Index support to match ACPI 2.0 semantics. Storing a 11714Integer, String, or Buffer to an Index of a Buffer will store only 11715the least-significant byte of the source to the Indexed buffer 11716byte. Multiple writes are not performed. 11717 11718Fixed a problem where the access type used in an AccessAs ASL 11719operator was not recorded correctly into the field object. 11720 11721Fixed a problem where ASL Event objects were created in a 11722signalled state. Events are now created in an unsignalled state. 11723 11724The internal object cache is now purged after table loading and 11725initialization to reduce the use of dynamic kernel memory -- on 11726the assumption that object use is greatest during the parse phase 11727of the entire table (versus the run-time use of individual control 11728methods.) 11729 11730ACPI 2.0 variable-length packages are now fully operational. 11731 11732Code and Data Size: Code and Data optimizations have permitted new 11733feature development with an actual reduction in the library size. 11734Current core subsystem library sizes are shown below. These are 11735the code and data sizes for the acpica.lib produced by the 11736Microsoft Visual C++ 6.0 compiler, and these values do not include 11737any ACPI driver or OSPM code. The debug version of the code 11738includes the debug output trace mechanism and has a larger code 11739and data size. Note that these values will vary depending on the 11740efficiency of the compiler and the compiler options used during 11741generation. 11742 11743 Previous Release (11_09_01): 11744 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 11745 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 11746 11747 Current Release: 11748 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 11749 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 11750 11751 2) Linux: 11752 11753Enhanced the ACPI boot-time initialization code to allow the use 11754of Local APIC tables for processor enumeration on IA-32, and to 11755pave the way for a fully MPS-free boot (on SMP systems) in the 11756near future. This functionality replaces 11757arch/i386/kernel/acpitables.c, which was introduced in an earlier 117582.4.15-preX release. To enable this feature you must add 11759"acpi_boot=on" to the kernel command line -- see the help entry 11760for CONFIG_ACPI_BOOT for more information. An IA-64 release is in 11761the works... 11762 11763Restructured the configuration options to allow boot-time table 11764parsing support without inclusion of the ACPI Interpreter (and 11765other) code. 11766 11767NOTE: This release does not include fixes for the reported events, 11768power-down, and thermal passive cooling issues (coming soon). 11769 11770 3) ASL Compiler: 11771 11772Added additional typechecking for Fields within restricted access 11773Operation Regions. All fields within EC and CMOS regions must be 11774declared with ByteAcc. All fields withing SMBus regions must be 11775declared with the BufferAcc access type. 11776 11777Fixed a problem where the listing file output of control methods 11778no longer interleaved the actual AML code with the ASL source 11779code. 11780 11781 11782 11783 11784---------------------------------------- 11785Summary of changes for this label: 11_09_01 11786 117871) ACPI CA Core Subsystem: 11788 11789Implemented ACPI 2.0-defined support for writes to fields with a 11790Buffer, String, or Integer source operand that is smaller than the 11791target field. In these cases, the source operand is zero-extended 11792to fill the target field. 11793 11794Fixed a problem where a Field starting bit offset (within the 11795parent operation region) was calculated incorrectly if the 11796 11797alignment of the field differed from the access width. This 11798affected CreateWordField, CreateDwordField, CreateQwordField, and 11799possibly other fields that use the "AccessAny" keyword. 11800 11801Fixed a problem introduced in the 11_02_01 release where indirect 11802stores through method arguments did not operate correctly. 11803 118042) Linux: 11805 11806Implemented boot-time ACPI table parsing support 11807(CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code 11808facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than 11809legacy BIOS interfaces (e.g. MPS) for the configuration of system 11810processors, memory, and interrupts during setup_arch(). Note that 11811this patch does not include the required architecture-specific 11812changes required to apply this information -- subsequent patches 11813will be posted for both IA32 and IA64 to achieve this. 11814 11815Added low-level sleep support for IA32 platforms, courtesy of Pat 11816Mochel. This allows IA32 systems to transition to/from various 11817sleeping states (e.g. S1, S3), although the lack of a centralized 11818driver model and power-manageable drivers will prevent its 11819(successful) use on most systems. 11820 11821Revamped the ACPI 'menuconfig' layout: created new "ACPI Support" 11822submenu, unified IA32 and IA64 options, added new "Boot using ACPI 11823tables" option, etc. 11824 11825Increased the default timeout for the EC driver from 1ms to 10ms 11826(1000 cycles of 10us) to try to address AE_TIME errors during EC 11827transactions. 11828 11829 ---------------------------------------- 11830Summary of changes for this label: 11_02_01 11831 118321) ACPI CA Core Subsystem: 11833 11834ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access 11835(QWordAcc keyword). All ACPI 2.0 64-bit support is now 11836implemented. 11837 11838OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required 11839changes to support ACPI 2.0 Qword field access. Read/Write 11840PciConfiguration(), Read/Write Memory(), and Read/Write Port() now 11841accept an ACPI_INTEGER (64 bits) as the value parameter. Also, 11842the value parameter for the address space handler interface is now 11843an ACPI_INTEGER. OSL implementations of these interfaces must now 11844handle the case where the Width parameter is 64. 11845 11846Index Fields: Fixed a problem where unaligned bit assembly and 11847disassembly for IndexFields was not supported correctly. 11848 11849Index and Bank Fields: Nested Index and Bank Fields are now 11850supported. During field access, a check is performed to ensure 11851that the value written to an Index or Bank register is not out of 11852the range of the register. The Index (or Bank) register is 11853written before each access to the field data. Future support will 11854include allowing individual IndexFields to be wider than the 11855DataRegister width. 11856 11857Fields: Fixed a problem where the AML interpreter was incorrectly 11858attempting to write beyond the end of a Field/OpRegion. This was 11859a boundary case that occurred when a DWORD field was written to a 11860BYTE access OpRegion, forcing multiple writes and causing the 11861interpreter to write one datum too many. 11862 11863Fields: Fixed a problem with Field/OpRegion access where the 11864starting bit address of a field was incorrectly calculated if the 11865current access type was wider than a byte (WordAcc, DwordAcc, or 11866QwordAcc). 11867 11868Fields: Fixed a problem where forward references to individual 11869FieldUnits (individual Field names within a Field definition) were 11870not resolved during the AML table load. 11871 11872Fields: Fixed a problem where forward references from a Field 11873definition to the parent Operation Region definition were not 11874resolved during the AML table load. 11875 11876Fields: Duplicate FieldUnit names within a scope are now detected 11877during AML table load. 11878 11879Acpi Interfaces: Fixed a problem where the AcpiGetName() interface 11880returned an incorrect name for the root node. 11881 11882Code and Data Size: Code and Data optimizations have permitted new 11883feature development with an actual reduction in the library size. 11884Current core subsystem library sizes are shown below. These are 11885the code and data sizes for the acpica.lib produced by the 11886Microsoft Visual C++ 6.0 compiler, and these values do not include 11887any ACPI driver or OSPM code. The debug version of the code 11888includes the debug output trace mechanism and has a larger code 11889and data size. Note that these values will vary depending on the 11890efficiency of the compiler and the compiler options used during 11891generation. 11892 11893 Previous Release (10_18_01): 11894 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 11895 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 11896 11897 Current Release: 11898 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 11899 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 11900 11901 2) Linux: 11902 11903Improved /proc processor output (Pavel Machek) Re-added 11904MODULE_LICENSE("GPL") to all modules. 11905 11906 3) ASL Compiler version X2030: 11907 11908Duplicate FieldUnit names within a scope are now detected and 11909flagged as errors. 11910 11911 4) Documentation: 11912 11913Programmer Reference updated to reflect OSL and address space 11914handler interface changes described above. 11915 11916---------------------------------------- 11917Summary of changes for this label: 10_18_01 11918 11919ACPI CA Core Subsystem: 11920 11921Fixed a problem with the internal object reference count mechanism 11922that occasionally caused premature object deletion. This resolves 11923all of the outstanding problem reports where an object is deleted 11924in the middle of an interpreter evaluation. Although this problem 11925only showed up in rather obscure cases, the solution to the 11926problem involved an adjustment of all reference counts involving 11927objects attached to namespace nodes. 11928 11929Fixed a problem with Field support in the interpreter where 11930writing to an aligned field whose length is an exact multiple (2 11931or greater) of the field access granularity would cause an attempt 11932to write beyond the end of the field. 11933 11934The top level AML opcode execution functions within the 11935interpreter have been renamed with a more meaningful and 11936consistent naming convention. The modules exmonad.c and 11937exdyadic.c were eliminated. New modules are exoparg1.c, 11938exoparg2.c, exoparg3.c, and exoparg6.c. 11939 11940Support for the ACPI 2.0 "Mid" ASL operator has been implemented. 11941 11942Fixed a problem where the AML debugger was causing some internal 11943objects to not be deleted during subsystem termination. 11944 11945Fixed a problem with the external AcpiEvaluateObject interface 11946where the subsystem would fault if the named object to be 11947evaluated refered to a constant such as Zero, Ones, etc. 11948 11949Fixed a problem with IndexFields and BankFields where the 11950subsystem would fault if the index, data, or bank registers were 11951not defined in the same scope as the field itself. 11952 11953Added printf format string checking for compilers that support 11954this feature. Corrected more than 50 instances of issues with 11955format specifiers within invocations of ACPI_DEBUG_PRINT 11956throughout the core subsystem code. 11957 11958The ASL "Revision" operator now returns the ACPI support level 11959implemented in the core - the value "2" since the ACPI 2.0 support 11960is more than 50% implemented. 11961 11962Enhanced the output of the AML debugger "dump namespace" command 11963to output in a more human-readable form. 11964 11965Current core subsystem library code sizes are shown below. These 11966 11967are the code and data sizes for the acpica.lib produced by the 11968Microsoft Visual C++ 6.0 compiler, and these values do not include 11969any ACPI driver or OSPM code. The debug version of the code 11970includes the full debug trace mechanism -- leading to a much 11971 11972larger code and data size. Note that these values will vary 11973depending on the efficiency of the compiler and the compiler 11974options used during generation. 11975 11976 Previous Label (09_20_01): 11977 Non-Debug Version: 65K Code, 5K Data, 70K Total 11978 Debug Version: 138K Code, 58K Data, 196K Total 11979 11980 This Label: 11981 11982 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 11983 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 11984 11985Linux: 11986 11987Implemented a "Bad BIOS Blacklist" to track machines that have 11988known ASL/AML problems. 11989 11990Enhanced the /proc interface for the thermal zone driver and added 11991support for _HOT (the critical suspend trip point). The 'info' 11992file now includes threshold/policy information, and allows setting 11993of _SCP (cooling preference) and _TZP (polling frequency) values 11994to the 'info' file. Examples: "echo tzp=5 > info" sets the polling 11995frequency to 5 seconds, and "echo scp=1 > info" sets the cooling 11996preference to the passive/quiet mode (if supported by the ASL). 11997 11998Implemented a workaround for a gcc bug that resuted in an OOPs 11999when loading the control method battery driver. 12000 12001 ---------------------------------------- 12002Summary of changes for this label: 09_20_01 12003 12004 ACPI CA Core Subsystem: 12005 12006The AcpiEnableEvent and AcpiDisableEvent interfaces have been 12007modified to allow individual GPE levels to be flagged as wake- 12008enabled (i.e., these GPEs are to remain enabled when the platform 12009sleeps.) 12010 12011The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now 12012support wake-enabled GPEs. This means that upon entering the 12013sleep state, all GPEs that are not wake-enabled are disabled. 12014When leaving the sleep state, these GPEs are reenabled. 12015 12016A local double-precision divide/modulo module has been added to 12017enhance portability to OS kernels where a 64-bit math library is 12018not available. The new module is "utmath.c". 12019 12020Several optimizations have been made to reduce the use of CPU 12021stack. Originally over 2K, the maximum stack usage is now below 120222K at 1860 bytes (1.82k) 12023 12024Fixed a problem with the AcpiGetFirmwareTable interface where the 12025root table pointer was not mapped into a logical address properly. 12026 12027Fixed a problem where a NULL pointer was being dereferenced in the 12028interpreter code for the ASL Notify operator. 12029 12030Fixed a problem where the use of the ASL Revision operator 12031returned an error. This operator now returns the current version 12032of the ACPI CA core subsystem. 12033 12034Fixed a problem where objects passed as control method parameters 12035to AcpiEvaluateObject were always deleted at method termination. 12036However, these objects may end up being stored into the namespace 12037by the called method. The object reference count mechanism was 12038applied to these objects instead of a force delete. 12039 12040Fixed a problem where static strings or buffers (contained in the 12041AML code) that are declared as package elements within the ASL 12042code could cause a fault because the interpreter would attempt to 12043delete them. These objects are now marked with the "static 12044object" flag to prevent any attempt to delete them. 12045 12046Implemented an interpreter optimization to use operands directly 12047from the state object instead of extracting the operands to local 12048variables. This reduces stack use and code size, and improves 12049performance. 12050 12051The module exxface.c was eliminated as it was an unnecessary extra 12052layer of code. 12053 12054Current core subsystem library code sizes are shown below. These 12055are the code and data sizes for the acpica.lib produced by the 12056Microsoft Visual C++ 6.0 compiler, and these values do not include 12057any ACPI driver or OSPM code. The debug version of the code 12058includes the full debug trace mechanism -- leading to a much 12059larger code and data size. Note that these values will vary 12060depending on the efficiency of the compiler and the compiler 12061options used during generation. 12062 12063 Non-Debug Version: 65K Code, 5K Data, 70K Total 12064(Previously 69K) Debug Version: 138K Code, 58K Data, 196K 12065Total (Previously 195K) 12066 12067Linux: 12068 12069Support for ACPI 2.0 64-bit integers has been added. All ACPI 12070Integer objects are now 64 bits wide 12071 12072All Acpi data types and structures are now in lower case. Only 12073Acpi macros are upper case for differentiation. 12074 12075 Documentation: 12076 12077Changes to the external interfaces as described above. 12078 12079 ---------------------------------------- 12080Summary of changes for this label: 08_31_01 12081 12082 ACPI CA Core Subsystem: 12083 12084A bug with interpreter implementation of the ASL Divide operator 12085was found and fixed. The implicit function return value (not the 12086explicit store operands) was returning the remainder instead of 12087the quotient. This was a longstanding bug and it fixes several 12088known outstanding issues on various platforms. 12089 12090The ACPI_DEBUG_PRINT and function trace entry/exit macros have 12091been further optimized for size. There are 700 invocations of the 12092DEBUG_PRINT macro alone, so each optimization reduces the size of 12093the debug version of the subsystem significantly. 12094 12095A stack trace mechanism has been implemented. The maximum stack 12096usage is about 2K on 32-bit platforms. The debugger command "stat 12097stack" will display the current maximum stack usage. 12098 12099All public symbols and global variables within the subsystem are 12100now prefixed with the string "Acpi". This keeps all of the 12101symbols grouped together in a kernel map, and avoids conflicts 12102with other kernel subsystems. 12103 12104Most of the internal fixed lookup tables have been moved into the 12105code segment via the const operator. 12106 12107Several enhancements have been made to the interpreter to both 12108reduce the code size and improve performance. 12109 12110Current core subsystem library code sizes are shown below. These 12111are the code and data sizes for the acpica.lib produced by the 12112Microsoft Visual C++ 6.0 compiler, and these values do not include 12113any ACPI driver or OSPM code. The debug version of the code 12114includes the full debug trace mechanism which contains over 700 12115invocations of the DEBUG_PRINT macro, 500 function entry macro 12116invocations, and over 900 function exit macro invocations -- 12117leading to a much larger code and data size. Note that these 12118values will vary depending on the efficiency of the compiler and 12119the compiler options used during generation. 12120 12121 Non-Debug Version: 64K Code, 5K Data, 69K Total 12122Debug Version: 137K Code, 58K Data, 195K Total 12123 12124 Linux: 12125 12126Implemented wbinvd() macro, pending a kernel-wide definition. 12127 12128Fixed /proc/acpi/event to handle poll() and short reads. 12129 12130 ASL Compiler, version X2026: 12131 12132Fixed a problem introduced in the previous label where the AML 12133 12134code emitted for package objects produced packages with zero 12135length. 12136 12137 ---------------------------------------- 12138Summary of changes for this label: 08_16_01 12139 12140ACPI CA Core Subsystem: 12141 12142The following ACPI 2.0 ASL operators have been implemented in the 12143AML interpreter (These are already supported by the Intel ASL 12144compiler): ToDecimalString, ToHexString, ToString, ToInteger, and 12145ToBuffer. Support for 64-bit AML constants is implemented in the 12146AML parser, debugger, and disassembler. 12147 12148The internal memory tracking mechanism (leak detection code) has 12149been upgraded to reduce the memory overhead (a separate tracking 12150block is no longer allocated for each memory allocation), and now 12151supports all of the internal object caches. 12152 12153The data structures and code for the internal object caches have 12154been coelesced and optimized so that there is a single cache and 12155memory list data structure and a single group of functions that 12156implement generic cache management. This has reduced the code 12157size in both the debug and release versions of the subsystem. 12158 12159The DEBUG_PRINT macro(s) have been optimized for size and replaced 12160by ACPI_DEBUG_PRINT. The syntax for this macro is slightly 12161different, because it generates a single call to an internal 12162function. This results in a savings of about 90 bytes per 12163invocation, resulting in an overall code and data savings of about 1216416% in the debug version of the subsystem. 12165 12166 Linux: 12167 12168Fixed C3 disk corruption problems and re-enabled C3 on supporting 12169machines. 12170 12171Integrated low-level sleep code by Patrick Mochel. 12172 12173Further tweaked source code Linuxization. 12174 12175Other minor fixes. 12176 12177 ASL Compiler: 12178 12179Support for ACPI 2.0 variable length packages is fixed/completed. 12180 12181Fixed a problem where the optional length parameter for the ACPI 121822.0 ToString operator. 12183 12184Fixed multiple extraneous error messages when a syntax error is 12185detected within the declaration line of a control method. 12186 12187 ---------------------------------------- 12188Summary of changes for this label: 07_17_01 12189 12190ACPI CA Core Subsystem: 12191 12192Added a new interface named AcpiGetFirmwareTable to obtain any 12193ACPI table via the ACPI signature. The interface can be called at 12194any time during kernel initialization, even before the kernel 12195virtual memory manager is initialized and paging is enabled. This 12196allows kernel subsystems to obtain ACPI tables very early, even 12197before the ACPI CA subsystem is initialized. 12198 12199Fixed a problem where Fields defined with the AnyAcc attribute 12200could be resolved to the incorrect address under the following 12201conditions: 1) the field width is larger than 8 bits and 2) the 12202parent operation region is not defined on a DWORD boundary. 12203 12204Fixed a problem where the interpreter is not being locked during 12205namespace initialization (during execution of the _INI control 12206methods), causing an error when an attempt is made to release it 12207later. 12208 12209ACPI 2.0 support in the AML Interpreter has begun and will be 12210ongoing throughout the rest of this year. In this label, The Mod 12211operator is implemented. 12212 12213Added a new data type to contain full PCI addresses named 12214ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device, 12215and Function values. 12216 12217 Linux: 12218 12219Enhanced the Linux version of the source code to change most 12220capitalized ACPI type names to lowercase. For example, all 12221instances of ACPI_STATUS are changed to acpi_status. This will 12222result in a large diff, but the change is strictly cosmetic and 12223aligns the CA code closer to the Linux coding standard. 12224 12225OSL Interfaces: 12226 12227The interfaces to the PCI configuration space have been changed to 12228add the PCI Segment number and to split the single 32-bit combined 12229DeviceFunction field into two 16-bit fields. This was 12230accomplished by moving the four values that define an address in 12231PCI configuration space (segment, bus, device, and function) to 12232the new ACPI_PCI_ID structure. 12233 12234The changes to the PCI configuration space interfaces led to a 12235reexamination of the complete set of address space access 12236interfaces for PCI, I/O, and Memory. The previously existing 18 12237interfaces have proven difficult to maintain (any small change 12238must be propagated across at least 6 interfaces) and do not easily 12239allow for future expansion to 64 bits if necessary. Also, on some 12240systems, it would not be appropriate to demultiplex the access 12241width (8, 16, 32,or 64) before calling the OSL if the 12242corresponding native OS interfaces contain a similar access width 12243parameter. For these reasons, the 18 address space interfaces 12244have been replaced by these 6 new ones: 12245 12246AcpiOsReadPciConfiguration 12247AcpiOsWritePciConfiguration 12248AcpiOsReadMemory 12249AcpiOsWriteMemory 12250AcpiOsReadPort 12251AcpiOsWritePort 12252 12253Added a new interface named AcpiOsGetRootPointer to allow the OSL 12254to perform the platform and/or OS-specific actions necessary to 12255obtain the ACPI RSDP table pointer. On IA-32 platforms, this 12256interface will simply call down to the CA core to perform the low- 12257memory search for the table. On IA-64, the RSDP is obtained from 12258EFI. Migrating this interface to the OSL allows the CA core to 12259 12260remain OS and platform independent. 12261 12262Added a new interface named AcpiOsSignal to provide a generic 12263"function code and pointer" interface for various miscellaneous 12264signals and notifications that must be made to the host OS. The 12265first such signals are intended to support the ASL Fatal and 12266Breakpoint operators. In the latter case, the AcpiOsBreakpoint 12267interface has been obsoleted. 12268 12269The definition of the AcpiFormatException interface has been 12270changed to simplify its use. The caller no longer must supply a 12271buffer to the call; A pointer to a const string is now returned 12272directly. This allows the call to be easily used in printf 12273statements, etc. since the caller does not have to manage a local 12274buffer. 12275 12276 12277 ASL Compiler, Version X2025: 12278 12279The ACPI 2.0 Switch/Case/Default operators have been implemented 12280and are fully functional. They will work with all ACPI 1.0 12281interpreters, since the operators are simply translated to If/Else 12282pairs. 12283 12284The ACPI 2.0 ElseIf operator is implemented and will also work 12285with 1.0 interpreters, for the same reason. 12286 12287Implemented support for ACPI 2.0 variable-length packages. These 12288packages have a separate opcode, and their size is determined by 12289the interpreter at run-time. 12290 12291Documentation The ACPI CA Programmer Reference has been updated to 12292reflect the new interfaces and changes to existing interfaces. 12293 12294 ------------------------------------------ 12295Summary of changes for this label: 06_15_01 12296 12297 ACPI CA Core Subsystem: 12298 12299Fixed a problem where a DWORD-accessed field within a Buffer 12300object would get its byte address inadvertently rounded down to 12301the nearest DWORD. Buffers are always Byte-accessible. 12302 12303 ASL Compiler, version X2024: 12304 12305Fixed a problem where the Switch() operator would either fault or 12306hang the compiler. Note however, that the AML code for this ACPI 123072.0 operator is not yet implemented. 12308 12309Compiler uses the new AcpiOsGetTimer interface to obtain compile 12310timings. 12311 12312Implementation of the CreateField operator automatically converts 12313a reference to a named field within a resource descriptor from a 12314byte offset to a bit offset if required. 12315 12316Added some missing named fields from the resource descriptor 12317support. These are the names that are automatically created by the 12318compiler to reference fields within a descriptor. They are only 12319valid at compile time and are not passed through to the AML 12320interpreter. 12321 12322Resource descriptor named fields are now typed as Integers and 12323subject to compile-time typechecking when used in expressions. 12324 12325 ------------------------------------------ 12326Summary of changes for this label: 05_18_01 12327 12328 ACPI CA Core Subsystem: 12329 12330Fixed a couple of problems in the Field support code where bits 12331from adjacent fields could be returned along with the proper field 12332bits. Restructured the field support code to improve performance, 12333readability and maintainability. 12334 12335New DEBUG_PRINTP macro automatically inserts the procedure name 12336into the output, saving hundreds of copies of procedure name 12337strings within the source, shrinking the memory footprint of the 12338debug version of the core subsystem. 12339 12340 Source Code Structure: 12341 12342The source code directory tree was restructured to reflect the 12343current organization of the component architecture. Some files 12344and directories have been moved and/or renamed. 12345 12346 Linux: 12347 12348Fixed leaking kacpidpc processes. 12349 12350Fixed queueing event data even when /proc/acpi/event is not 12351opened. 12352 12353 ASL Compiler, version X2020: 12354 12355Memory allocation performance enhancement - over 24X compile time 12356improvement on large ASL files. Parse nodes and namestring 12357buffers are now allocated from a large internal compiler buffer. 12358 12359The temporary .SRC file is deleted unless the "-s" option is 12360specified 12361 12362The "-d" debug output option now sends all output to the .DBG file 12363instead of the console. 12364 12365"External" second parameter is now optional 12366 12367"ElseIf" syntax now properly allows the predicate 12368 12369Last operand to "Load" now recognized as a Target operand 12370 12371Debug object can now be used anywhere as a normal object. 12372 12373ResourceTemplate now returns an object of type BUFFER 12374 12375EISAID now returns an object of type INTEGER 12376 12377"Index" now works with a STRING operand 12378 12379"LoadTable" now accepts optional parameters 12380 12381"ToString" length parameter is now optional 12382 12383"Interrupt (ResourceType," parse error fixed. 12384 12385"Register" with a user-defined region space parse error fixed 12386 12387Escaped backslash at the end of a string ("\\") scan/parse error 12388fixed 12389 12390"Revision" is now an object of type INTEGER. 12391 12392 12393 12394------------------------------------------ 12395Summary of changes for this label: 05_02_01 12396 12397Linux: 12398 12399/proc/acpi/event now blocks properly. 12400 12401Removed /proc/sys/acpi. You can still dump your DSDT from 12402/proc/acpi/dsdt. 12403 12404 ACPI CA Core Subsystem: 12405 12406Fixed a problem introduced in the previous label where some of the 12407"small" resource descriptor types were not recognized. 12408 12409Improved error messages for the case where an ASL Field is outside 12410the range of the parent operation region. 12411 12412 ASL Compiler, version X2018: 12413 12414 12415Added error detection for ASL Fields that extend beyond the length 12416of the parent operation region (only if the length of the region 12417is known at compile time.) This includes fields that have a 12418minimum access width that is smaller than the parent region, and 12419individual field units that are partially or entirely beyond the 12420extent of the parent. 12421 12422 12423 12424------------------------------------------ 12425Summary of changes for this label: 04_27_01 12426 12427 ACPI CA Core Subsystem: 12428 12429Fixed a problem where the namespace mutex could be released at the 12430wrong time during execution of AcpiRemoveAddressSpaceHandler. 12431 12432Added optional thread ID output for debug traces, to simplify 12433debugging of multiple threads. Added context switch notification 12434when the debug code realizes that a different thread is now 12435executing ACPI code. 12436 12437Some additional external data types have been prefixed with the 12438string "ACPI_" for consistency. This may effect existing code. 12439The data types affected are the external callback typedefs - e.g., 12440 12441WALK_CALLBACK becomes ACPI_WALK_CALLBACK. 12442 12443 Linux: 12444 12445Fixed an issue with the OSL semaphore implementation where a 12446thread was waking up with an error from receiving a SIGCHLD 12447signal. 12448 12449Linux version of ACPI CA now uses the system C library for string 12450manipulation routines instead of a local implementation. 12451 12452Cleaned up comments and removed TBDs. 12453 12454 ASL Compiler, version X2017: 12455 12456Enhanced error detection and reporting for all file I/O 12457operations. 12458 12459 Documentation: 12460 12461Programmer Reference updated to version 1.06. 12462 12463 12464 12465------------------------------------------ 12466Summary of changes for this label: 04_13_01 12467 12468 ACPI CA Core Subsystem: 12469 12470Restructured support for BufferFields and RegionFields. 12471BankFields support is now fully operational. All known 32-bit 12472limitations on field sizes have been removed. Both BufferFields 12473and (Operation) RegionFields are now supported by the same field 12474management code. 12475 12476Resource support now supports QWORD address and IO resources. The 1247716/32/64 bit address structures and the Extended IRQ structure 12478have been changed to properly handle Source Resource strings. 12479 12480A ThreadId of -1 is now used to indicate a "mutex not acquired" 12481condition internally and must never be returned by AcpiOsThreadId. 12482This reserved value was changed from 0 since Unix systems allow a 12483thread ID of 0. 12484 12485Linux: 12486 12487Driver code reorganized to enhance portability 12488 12489Added a kernel configuration option to control ACPI_DEBUG 12490 12491Fixed the EC driver to honor _GLK. 12492 12493ASL Compiler, version X2016: 12494 12495Fixed support for the "FixedHw" keyword. Previously, the FixedHw 12496address space was set to 0, not 0x7f as it should be. 12497 12498 ------------------------------------------ 12499Summary of changes for this label: 03_13_01 12500 12501 ACPI CA Core Subsystem: 12502 12503During ACPI initialization, the _SB_._INI method is now run if 12504present. 12505 12506Notify handler fix - notifies are deferred until the parent method 12507completes execution. This fixes the "mutex already acquired" 12508issue seen occasionally. 12509 12510Part of the "implicit conversion" rules in ACPI 2.0 have been 12511found to cause compatibility problems with existing ASL/AML. The 12512convert "result-to-target-type" implementation has been removed 12513for stores to method Args and Locals. Source operand conversion 12514is still fully implemented. Possible changes to ACPI 2.0 12515specification pending. 12516 12517Fix to AcpiRsCalculatePciRoutingTableLength to return correct 12518length. 12519 12520Fix for compiler warnings for 64-bit compiles. 12521 12522 Linux: 12523 12524/proc output aligned for easier parsing. 12525 12526Release-version compile problem fixed. 12527 12528New kernel configuration options documented in Configure.help. 12529 12530IBM 600E - Fixed Sleep button may generate "Invalid <NULL> 12531context" message. 12532 12533 OSPM: 12534 12535Power resource driver integrated with bus manager. 12536 12537Fixed kernel fault during active cooling for thermal zones. 12538 12539Source Code: 12540 12541The source code tree has been restructured. 12542 12543 12544 12545------------------------------------------ 12546Summary of changes for this label: 03_02_01 12547 12548 Linux OS Services Layer (OSL): 12549 12550Major revision of all Linux-specific code. 12551 12552Modularized all ACPI-specific drivers. 12553 12554Added new thermal zone and power resource drivers. 12555 12556Revamped /proc interface (new functionality is under /proc/acpi). 12557 12558New kernel configuration options. 12559 12560 Linux known issues: 12561 12562New kernel configuration options not documented in Configure.help 12563yet. 12564 12565 12566Module dependencies not currently implemented. If used, they 12567should be loaded in this order: busmgr, power, ec, system, 12568processor, battery, ac_adapter, button, thermal. 12569 12570Modules will not load if CONFIG_MODVERSION is set. 12571 12572IBM 600E - entering S5 may reboot instead of shutting down. 12573 12574IBM 600E - Sleep button may generate "Invalid <NULL> context" 12575message. 12576 12577Some systems may fail with "execution mutex already acquired" 12578message. 12579 12580 ACPI CA Core Subsystem: 12581 12582Added a new OSL Interface, AcpiOsGetThreadId. This was required 12583for the deadlock detection code. Defined to return a non-zero, 32- 12584bit thread ID for the currently executing thread. May be a non- 12585zero constant integer on single-thread systems. 12586 12587Implemented deadlock detection for internal subsystem mutexes. We 12588may add conditional compilation for this code (debug only) later. 12589 12590ASL/AML Mutex object semantics are now fully supported. This 12591includes multiple acquires/releases by owner and support for the 12592 12593Mutex SyncLevel parameter. 12594 12595A new "Force Release" mechanism automatically frees all ASL 12596Mutexes that have been acquired but not released when a thread 12597exits the interpreter. This forces conformance to the ACPI spec 12598("All mutexes must be released when an invocation exits") and 12599prevents deadlocked ASL threads. This mechanism can be expanded 12600(later) to monitor other resource acquisitions if OEM ASL code 12601continues to misbehave (which it will). 12602 12603Several new ACPI exception codes have been added for the Mutex 12604support. 12605 12606Recursive method calls are now allowed and supported (the ACPI 12607spec does in fact allow recursive method calls.) The number of 12608recursive calls is subject to the restrictions imposed by the 12609SERIALIZED method keyword and SyncLevel (ACPI 2.0) method 12610parameter. 12611 12612Implemented support for the SyncLevel parameter for control 12613methods (ACPI 2.0 feature) 12614 12615Fixed a deadlock problem when multiple threads attempted to use 12616the interpreter. 12617 12618Fixed a problem where the string length of a String package 12619element was not always set in a package returned from 12620AcpiEvaluateObject. 12621 12622Fixed a problem where the length of a String package element was 12623not always included in the length of the overall package returned 12624from AcpiEvaluateObject. 12625 12626Added external interfaces (Acpi*) to the ACPI debug memory 12627manager. This manager keeps a list of all outstanding 12628allocations, and can therefore detect memory leaks and attempts to 12629free memory blocks more than once. Useful for code such as the 12630power manager, etc. May not be appropriate for device drivers. 12631Performance with the debug code enabled is slow. 12632 12633The ACPI Global Lock is now an optional hardware element. 12634 12635 ASL Compiler Version X2015: 12636 12637Integrated changes to allow the compiler to be generated on 12638multiple platforms. 12639 12640Linux makefile added to generate the compiler on Linux 12641 12642 Source Code: 12643 12644All platform-specific headers have been moved to their own 12645subdirectory, Include/Platform. 12646 12647New source file added, Interpreter/ammutex.c 12648 12649New header file, Include/acstruct.h 12650 12651 Documentation: 12652 12653The programmer reference has been updated for the following new 12654interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree 12655 12656 ------------------------------------------ 12657Summary of changes for this label: 02_08_01 12658 12659Core ACPI CA Subsystem: Fixed a problem where an error was 12660incorrectly returned if the return resource buffer was larger than 12661the actual data (in the resource interfaces). 12662 12663References to named objects within packages are resolved to the 12664 12665full pathname string before packages are returned directly (via 12666the AcpiEvaluateObject interface) or indirectly via the resource 12667interfaces. 12668 12669Linux OS Services Layer (OSL): 12670 12671Improved /proc battery interface. 12672 12673 12674Added C-state debugging output and other miscellaneous fixes. 12675 12676ASL Compiler Version X2014: 12677 12678All defined method arguments can now be used as local variables, 12679including the ones that are not actually passed in as parameters. 12680The compiler tracks initialization of the arguments and issues an 12681exception if they are used without prior assignment (just like 12682locals). 12683 12684The -o option now specifies a filename prefix that is used for all 12685output files, including the AML output file. Otherwise, the 12686default behavior is as follows: 1) the AML goes to the file 12687specified in the DSDT. 2) all other output files use the input 12688source filename as the base. 12689 12690 ------------------------------------------ 12691Summary of changes for this label: 01_25_01 12692 12693Core ACPI CA Subsystem: Restructured the implementation of object 12694store support within the interpreter. This includes support for 12695the Store operator as well as any ASL operators that include a 12696target operand. 12697 12698Partially implemented support for Implicit Result-to-Target 12699conversion. This is when a result object is converted on the fly 12700to the type of an existing target object. Completion of this 12701support is pending further analysis of the ACPI specification 12702concerning this matter. 12703 12704CPU-specific code has been removed from the subsystem (hardware 12705directory). 12706 12707New Power Management Timer functions added 12708 12709Linux OS Services Layer (OSL): Moved system state transition code 12710to the core, fixed it, and modified Linux OSL accordingly. 12711 12712Fixed C2 and C3 latency calculations. 12713 12714 12715We no longer use the compilation date for the version message on 12716initialization, but retrieve the version from AcpiGetSystemInfo(). 12717 12718Incorporated for fix Sony VAIO machines. 12719 12720Documentation: The Programmer Reference has been updated and 12721reformatted. 12722 12723 12724ASL Compiler: Version X2013: Fixed a problem where the line 12725numbering and error reporting could get out of sync in the 12726presence of multiple include files. 12727 12728 ------------------------------------------ 12729Summary of changes for this label: 01_15_01 12730 12731Core ACPI CA Subsystem: 12732 12733Implemented support for type conversions in the execution of the 12734ASL Concatenate operator (The second operand is converted to 12735match the type of the first operand before concatenation.) 12736 12737Support for implicit source operand conversion is partially 12738implemented. The ASL source operand types Integer, Buffer, and 12739String are freely interchangeable for most ASL operators and are 12740converted by the interpreter on the fly as required. Implicit 12741Target operand conversion (where the result is converted to the 12742target type before storing) is not yet implemented. 12743 12744Support for 32-bit and 64-bit BCD integers is implemented. 12745 12746Problem fixed where a field read on an aligned field could cause a 12747read past the end of the field. 12748 12749New exception, AE_AML_NO_RETURN_VALUE, is returned when a method 12750does not return a value, but the caller expects one. (The ASL 12751compiler flags this as a warning.) 12752 12753ASL Compiler: 12754 12755Version X2011: 127561. Static typechecking of all operands is implemented. This 12757prevents the use of invalid objects (such as using a Package where 12758an Integer is required) at compile time instead of at interpreter 12759run-time. 127602. The ASL source line is printed with ALL errors and warnings. 127613. Bug fix for source EOF without final linefeed. 127624. Debug option is split into a parse trace and a namespace trace. 127635. Namespace output option (-n) includes initial values for 12764integers and strings. 127656. Parse-only option added for quick syntax checking. 127667. Compiler checks for duplicate ACPI name declarations 12767 12768Version X2012: 127691. Relaxed typechecking to allow interchangeability between 12770strings, integers, and buffers. These types are now converted by 12771the interpreter at runtime. 127722. Compiler reports time taken by each internal subsystem in the 12773debug output file. 12774 12775 12776 ------------------------------------------ 12777Summary of changes for this label: 12_14_00 12778 12779ASL Compiler: 12780 12781This is the first official release of the compiler. Since the 12782compiler requires elements of the Core Subsystem, this label 12783synchronizes everything. 12784 12785------------------------------------------ 12786Summary of changes for this label: 12_08_00 12787 12788 12789Fixed a problem where named references within the ASL definition 12790of both OperationRegions and CreateXXXFields did not work 12791properly. The symptom was an AE_AML_OPERAND_TYPE during 12792initialization of the region/field. This is similar (but not 12793related internally) to the problem that was fixed in the last 12794label. 12795 12796Implemented both 32-bit and 64-bit support for the BCD ASL 12797functions ToBCD and FromBCD. 12798 12799Updated all legal headers to include "2000" in the copyright 12800years. 12801 12802 ------------------------------------------ 12803Summary of changes for this label: 12_01_00 12804 12805Fixed a problem where method invocations within the ASL definition 12806of both OperationRegions and CreateXXXFields did not work 12807properly. The symptom was an AE_AML_OPERAND_TYPE during 12808initialization of the region/field: 12809 12810 nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments 12811[DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s) 12812(0x3005) 12813 12814Fixed a problem where operators with more than one nested 12815subexpression would fail. The symptoms were varied, by mostly 12816AE_AML_OPERAND_TYPE errors. This was actually a rather serious 12817problem that has gone unnoticed until now. 12818 12819 Subtract (Add (1,2), Multiply (3,4)) 12820 12821Fixed a problem where AcpiGetHandle didn't quite get fixed in the 12822previous build (The prefix part of a relative path was handled 12823incorrectly). 12824 12825Fixed a problem where Operation Region initialization failed if 12826the operation region name was a "namepath" instead of a simple 12827"nameseg". Symptom was an AE_NO_OPERAND error. 12828 12829Fixed a problem where an assignment to a local variable via the 12830indirect RefOf mechanism only worked for the first such 12831assignment. Subsequent assignments were ignored. 12832 12833 ------------------------------------------ 12834Summary of changes for this label: 11_15_00 12835 12836ACPI 2.0 table support with backwards support for ACPI 1.0 and the 128370.71 extensions. Note: although we can read ACPI 2.0 BIOS tables, 12838the AML interpreter does NOT have support for the new 2.0 ASL 12839grammar terms at this time. 12840 12841All ACPI hardware access is via the GAS structures in the ACPI 2.0 12842FADT. 12843 12844All physical memory addresses across all platforms are now 64 bits 12845wide. Logical address width remains dependent on the platform 12846(i.e., "void *"). 12847 12848AcpiOsMapMemory interface changed to a 64-bit physical address. 12849 12850The AML interpreter integer size is now 64 bits, as per the ACPI 128512.0 specification. 12852 12853For backwards compatibility with ACPI 1.0, ACPI tables with a 12854revision number less than 2 use 32-bit integers only. 12855 12856Fixed a problem where the evaluation of OpRegion operands did not 12857always resolve them to numbers properly. 12858 12859------------------------------------------ 12860Summary of changes for this label: 10_20_00 12861 12862Fix for CBN_._STA issue. This fix will allow correct access to 12863CBN_ OpRegions when the _STA returns 0x8. 12864 12865Support to convert ACPI constants (Ones, Zeros, One) to actual 12866values before a package object is returned 12867 12868Fix for method call as predicate to if/while construct causing 12869incorrect if/while behavior 12870 12871Fix for Else block package lengths sometimes calculated wrong (if 12872block > 63 bytes) 12873 12874Fix for Processor object length field, was always zero 12875 12876Table load abort if FACP sanity check fails 12877 12878Fix for problem with Scope(name) if name already exists 12879 12880Warning emitted if a named object referenced cannot be found 12881(resolved) during method execution. 12882 12883 12884 12885 12886 12887------------------------------------------ 12888Summary of changes for this label: 9_29_00 12889 12890New table initialization interfaces: AcpiInitializeSubsystem no 12891longer has any parameters AcpiFindRootPointer - Find the RSDP (if 12892necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP- 12893>RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by 12894AcpiLoadTables 12895 12896Note: These interface changes require changes to all existing OSDs 12897 12898The PCI_Config default address space handler is always installed 12899at the root namespace object. 12900 12901------------------------------------------- 12902Summary of changes for this label: 09_15_00 12903 12904The new initialization architecture is implemented. New 12905interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize) 12906AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace 12907 12908(Namespace is automatically loaded when a table is loaded) 12909 12910The ACPI_OPERAND_OBJECT has been optimized to shrink its size from 1291152 bytes to 32 bytes. There is usually one of these for every 12912namespace object, so the memory savings is significant. 12913 12914Implemented just-in-time evaluation of the CreateField operators. 12915 12916Bug fixes for IA-64 support have been integrated. 12917 12918Additional code review comments have been implemented 12919 12920The so-called "third pass parse" has been replaced by a final walk 12921through the namespace to initialize all operation regions (address 12922spaces) and fields that have not yet been initialized during the 12923execution of the various _INI and REG methods. 12924 12925New file - namespace/nsinit.c 12926 12927------------------------------------------- 12928Summary of changes for this label: 09_01_00 12929 12930Namespace manager data structures have been reworked to change the 12931primary object from a table to a single object. This has 12932resulted in dynamic memory savings of 3X within the namespace and 129332X overall in the ACPI CA subsystem. 12934 12935Fixed problem where the call to AcpiEvFindPciRootBuses was 12936inadvertently left commented out. 12937 12938Reduced the warning count when generating the source with the GCC 12939compiler. 12940 12941Revision numbers added to each module header showing the 12942SourceSafe version of the file. Please refer to this version 12943number when giving us feedback or comments on individual modules. 12944 12945The main object types within the subsystem have been renamed to 12946clarify their purpose: 12947 12948ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT 12949ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT 12950ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE 12951 12952NOTE: no changes to the initialization sequence are included in 12953this label. 12954 12955------------------------------------------- 12956Summary of changes for this label: 08_23_00 12957 12958Fixed problem where TerminateControlMethod was being called 12959multiple times per method 12960 12961Fixed debugger problem where single stepping caused a semaphore to 12962be oversignalled 12963 12964Improved performance through additional parse object caching - 12965added ACPI_EXTENDED_OP type 12966 12967------------------------------------------- 12968Summary of changes for this label: 08_10_00 12969 12970Parser/Interpreter integration: Eliminated the creation of 12971complete parse trees for ACPI tables and control methods. 12972Instead, parse subtrees are created and then deleted as soon as 12973they are processed (Either entered into the namespace or executed 12974by the interpreter). This reduces the use of dynamic kernel 12975memory significantly. (about 10X) 12976 12977Exception codes broken into classes and renumbered. Be sure to 12978recompile all code that includes acexcep.h. Hopefully we won't 12979have to renumber the codes again now that they are split into 12980classes (environment, programmer, AML code, ACPI table, and 12981internal). 12982 12983Fixed some additional alignment issues in the Resource Manager 12984subcomponent 12985 12986Implemented semaphore tracking in the AcpiExec utility, and fixed 12987several places where mutexes/semaphores were being unlocked 12988without a corresponding lock operation. There are no known 12989semaphore or mutex "leaks" at this time. 12990 12991Fixed the case where an ASL Return operator is used to return an 12992unnamed package. 12993 12994------------------------------------------- 12995Summary of changes for this label: 07_28_00 12996 12997Fixed a problem with the way addresses were calculated in 12998AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem 12999manifested itself when a Field was created with WordAccess or 13000DwordAccess, but the field unit defined within the Field was less 13001 13002than a Word or Dword. 13003 13004Fixed a problem in AmlDumpOperands() module's loop to pull 13005operands off of the operand stack to display information. The 13006problem manifested itself as a TLB error on 64-bit systems when 13007accessing an operand stack with two or more operands. 13008 13009Fixed a problem with the PCI configuration space handlers where 13010context was getting confused between accesses. This required a 13011change to the generic address space handler and address space 13012setup definitions. Handlers now get both a global handler context 13013(this is the one passed in by the user when executing 13014AcpiInstallAddressSpaceHandler() and a specific region context 13015that is unique to each region (For example, the _ADR, _SEG and 13016_BBN values associated with a specific region). The generic 13017function definitions have changed to the following: 13018 13019typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function, 13020UINT32 Address, UINT32 BitWidth, UINT32 *Value, void 13021*HandlerContext, // This used to be void *Context void 13022*RegionContext); // This is an additional parameter 13023 13024typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE 13025RegionHandle, UINT32 Function, void *HandlerContext, void 13026**RegionContext); // This used to be **ReturnContext 13027 13028------------------------------------------- 13029Summary of changes for this label: 07_21_00 13030 13031Major file consolidation and rename. All files within the 13032interpreter have been renamed as well as most header files. This 13033was done to prevent collisions with existing files in the host 13034OSs -- filenames such as "config.h" and "global.h" seem to be 13035quite common. The VC project files have been updated. All 13036makefiles will require modification. 13037 13038The parser/interpreter integration continues in Phase 5 with the 13039implementation of a complete 2-pass parse (the AML is parsed 13040twice) for each table; This avoids the construction of a huge 13041parse tree and therefore reduces the amount of dynamic memory 13042required by the subsystem. Greater use of the parse object cache 13043means that performance is unaffected. 13044 13045Many comments from the two code reviews have been rolled in. 13046 13047The 64-bit alignment support is complete. 13048 13049------------------------------------------- 13050Summary of changes for this label: 06_30_00 13051 13052With a nod and a tip of the hat to the technology of yesteryear, 13053we've added support in the source code for 80 column output 13054devices. The code is now mostly constrained to 80 columns or 13055less to support environments and editors that 1) cannot display 13056or print more than 80 characters on a single line, and 2) cannot 13057disable line wrapping. 13058 13059A major restructuring of the namespace data structure has been 13060completed. The result is 1) cleaner and more 13061understandable/maintainable code, and 2) a significant reduction 13062in the dynamic memory requirement for each named ACPI object 13063(almost half). 13064 13065------------------------------------------- 13066Summary of changes for this label: 06_23_00 13067 13068Linux support has been added. In order to obtain approval to get 13069the ACPI CA subsystem into the Linux kernel, we've had to make 13070quite a few changes to the base subsystem that will affect all 13071users (all the changes are generic and OS- independent). The 13072effects of these global changes have been somewhat far reaching. 13073Files have been merged and/or renamed and interfaces have been 13074renamed. The major changes are described below. 13075 13076Osd* interfaces renamed to AcpiOs* to eliminate namespace 13077pollution/confusion within our target kernels. All OSD 13078interfaces must be modified to match the new naming convention. 13079 13080Files merged across the subsystem. A number of the smaller source 13081and header files have been merged to reduce the file count and 13082increase the density of the existing files. There are too many 13083to list here. In general, makefiles that call out individual 13084files will require rebuilding. 13085 13086Interpreter files renamed. All interpreter files now have the 13087prefix am* instead of ie* and is*. 13088 13089Header files renamed: The acapi.h file is now acpixf.h. The 13090acpiosd.h file is now acpiosxf.h. We are removing references to 13091the acronym "API" since it is somewhat windowsy. The new name is 13092"external interface" or xface or xf in the filenames.j 13093 13094 13095All manifest constants have been forced to upper case (some were 13096mixed case.) Also, the string "ACPI_" has been prepended to many 13097(not all) of the constants, typedefs, and structs. 13098 13099The globals "DebugLevel" and "DebugLayer" have been renamed 13100"AcpiDbgLevel" and "AcpiDbgLayer" respectively. 13101 13102All other globals within the subsystem are now prefixed with 13103"AcpiGbl_" Internal procedures within the subsystem are now 13104prefixed with "Acpi" (with only a few exceptions). The original 13105two-letter abbreviation for the subcomponent remains after "Acpi" 13106- for example, CmCallocate became AcpiCmCallocate. 13107 13108Added a source code translation/conversion utility. Used to 13109generate the Linux source code, it can be modified to generate 13110other types of source as well. Can also be used to cleanup 13111existing source by removing extraneous spaces and blank lines. 13112Found in tools/acpisrc/* 13113 13114OsdUnMapMemory was renamed to OsdUnmapMemory and then 13115AcpiOsUnmapMemory. (UnMap became Unmap). 13116 13117A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore. 13118When set to one, this indicates that the caller wants to use the 13119 13120semaphore as a mutex, not a counting semaphore. ACPI CA uses 13121both types. However, implementers of this call may want to use 13122different OS primitives depending on the type of semaphore 13123requested. For example, some operating systems provide separate 13124 13125"mutex" and "semaphore" interfaces - where the mutex interface is 13126much faster because it doesn't have all the overhead of a full 13127semaphore implementation. 13128 13129Fixed a deadlock problem where a method that accesses the PCI 13130address space can block forever if it is the first access to the 13131space. 13132 13133------------------------------------------- 13134Summary of changes for this label: 06_02_00 13135 13136Support for environments that cannot handle unaligned data 13137accesses (e.g. firmware and OS environments devoid of alignment 13138handler technology namely SAL/EFI and the IA-64 Linux kernel) has 13139been added (via configurable macros) in these three areas: - 13140Transfer of data from the raw AML byte stream is done via byte 13141moves instead of word/dword/qword moves. - External objects are 13142aligned within the user buffer, including package elements (sub- 13143objects). - Conversion of name strings to UINT32 Acpi Names is now 13144done byte-wise. 13145 13146The Store operator was modified to mimic Microsoft's 13147implementation when storing to a Buffer Field. 13148 13149Added a check of the BM_STS bit before entering C3. 13150 13151The methods subdirectory has been obsoleted and removed. A new 13152file, cmeval.c subsumes the functionality. 13153 13154A 16-bit (DOS) version of AcpiExec has been developed. The 13155makefile is under the acpiexec directory. 13156